CN112444148A - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
CN112444148A
CN112444148A CN201910827052.9A CN201910827052A CN112444148A CN 112444148 A CN112444148 A CN 112444148A CN 201910827052 A CN201910827052 A CN 201910827052A CN 112444148 A CN112444148 A CN 112444148A
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CN
China
Prior art keywords
heat exchange
straight section
exchange tube
section
straight
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Pending
Application number
CN201910827052.9A
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Chinese (zh)
Inventor
谢禧忠
谭永翔
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Hangzhou Sanhua Research Institute Co Ltd
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Hangzhou Sanhua Research Institute Co Ltd
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Application filed by Hangzhou Sanhua Research Institute Co Ltd filed Critical Hangzhou Sanhua Research Institute Co Ltd
Priority to CN201910827052.9A priority Critical patent/CN112444148A/en
Publication of CN112444148A publication Critical patent/CN112444148A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/30—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being attachable to the element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Fluid Mechanics (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The application discloses a heat exchanger, which comprises a first collecting pipe, a second collecting pipe and at least two heat exchange pipes connected with the first collecting pipe and the second collecting pipe, wherein each heat exchange pipe comprises a plurality of straight sections and at least two bending sections, two adjacent straight sections are connected through the bending sections, the thickness direction of the straight sections is approximately parallel to the length direction of the first collecting pipe, the adjacent straight sections are arranged along the thickness direction of the straight sections, the plurality of straight sections comprise a first straight section and a second straight section, the first straight section is connected with the first collecting pipe, the second straight section is connected with the second collecting pipe, the first straight sections adjacent to the heat exchange pipes are adjacently arranged, and/or the second straight sections adjacent to the heat exchange pipes are adjacently arranged. The heat exchanger of this application has improved the heat transfer effect.

Description

Heat exchanger
Technical Field
The application relates to the technical field of heat exchange, and more particularly relates to a heat exchanger.
Background
The heat exchanger is an energy-saving device for realizing heat transfer between materials between two or more than two fluids with different temperatures, and mainly comprises a collecting pipe and a heat exchange pipe. In the related art, the heat exchanger includes two parallel headers and a plurality of heat exchange tubes, the heat exchange tubes are axially opened along the headers, a length direction of each heat exchange tube is perpendicular to an axial direction of the header, and two ends of each heat exchange tube along the length direction are respectively inserted into the two headers. However, the heat exchanger has poor heat exchange effect, and an improved demand exists.
Disclosure of Invention
For this reason, this application has proposed a heat exchanger, and this heat exchanger has improved the heat transfer effect.
The heat exchanger according to the embodiment of the application comprises: the first collecting pipe and the second collecting pipe are arranged at intervals; the heat exchange tube comprises at least two heat exchange tubes, one end of each heat exchange tube is connected with the first collecting tube, the other end of each heat exchange tube is connected with the second collecting tube, each heat exchange tube comprises a plurality of straight sections and at least two bending sections, the adjacent straight sections are connected through the bending sections, the thickness direction of the straight sections is approximately parallel to the length direction of the first collecting tube, the adjacent straight sections are arranged along the thickness direction of the straight sections, the straight sections comprise first straight sections and second straight sections, the first straight sections are connected with the first collecting tube, the second straight sections are connected with the second collecting tube to communicate the first collecting tube with the second collecting tube, the first straight sections adjacent to the heat exchange tubes are adjacently arranged, or the second straight sections adjacent to the heat exchange tubes are adjacently arranged.
According to the heat exchanger of the application, at least two heat exchange tubes are arranged and connected between the first collecting pipe and the second collecting pipe, each heat exchange tube comprises a plurality of straight sections and at least two bending sections, one straight section is connected with the first collecting pipe and the other straight section is connected with the second collecting pipe in each heat exchange tube, and the one straight section of each two adjacent heat exchange tubes is adjacently arranged or the other straight section of each adjacent heat exchange tube is adjacently arranged, therefore, each heat exchange tube is relatively long, the number of the heat exchange tubes between the first collecting pipe and the second collecting pipe is relatively small, the circulation area is relatively small, the flow speed of a refrigerant is relatively high, and the heat exchange effect in the heat exchange tubes is improved.
In some embodiments, a plurality of the straight sections are arranged in a thickness direction of the straight sections, the first straight section and the second straight section of each of the heat exchange tubes are spaced apart in the thickness direction of the straight sections by the remaining straight sections and the bent sections, at least two of the heat exchange tubes include a first heat exchange tube, a second heat exchange tube and a third heat exchange tube which are adjacently disposed, the second heat exchange tube is located between the first heat exchange tube and the third heat exchange tube, the first straight section of the first heat exchange tube is disposed adjacent to the first straight section of the second heat exchange tube, and the second straight section of the second heat exchange tube is disposed adjacent to the second straight section of the third heat exchange tube.
In some embodiments, the heat exchange tubes extend in a substantially S-shaped curve, in each heat exchange tube, the lengths of the first straight section and the second straight section are substantially the same, one end of the remaining straight sections in the length direction is adjacent to the first collecting pipe and has a gap with the first collecting pipe, and the other end of the remaining straight sections in the length direction is adjacent to the second collecting pipe and has a gap with the second collecting pipe.
In some embodiments, the first straight section and the second straight section of each of the heat exchange tubes are arranged at intervals along a length direction of the straight section, a part of the plurality of the straight sections is arranged at intervals along a thickness direction of the straight section, at least two of the heat exchange tubes include a first heat exchange tube and a second heat exchange tube which are adjacently disposed, the first straight section of the first heat exchange tube is disposed adjacent to the first straight section of the second heat exchange tube, and the second straight section of the first heat exchange tube is disposed adjacent to the second straight section of the second heat exchange tube.
In some embodiments, the plurality of straight sections of each of the heat exchange tubes further includes a third straight section, a fourth straight section, and a fifth straight section, the first straight section, the fourth straight section, and the third straight section are arranged in a thickness direction of the straight section, the second straight section, the fifth straight section, and the third straight section are arranged in a thickness direction of the straight section, the fourth straight section, and the fifth straight section are arranged in a length direction of the straight section, the at least two of the bent sections include a first bent section, a second bent section, a third bent section, and a fourth bent section, the first bent section connects one end in the length direction of the third straight section and one end in the length direction of the fourth straight section, the second bent section connects the other end in the length direction of the third straight section and the other end in the length direction of the fifth straight section, the third bending section is connected with the other end of the first straight section in the length direction and the other end of the fourth straight section in the length direction, the fourth bending section is connected with one end of the second straight section in the length direction and one end of the fifth straight section in the length direction, one end of the first straight section in the length direction is connected with the first collecting pipe, and the other end of the second straight section in the length direction is connected with the second collecting pipe.
In some embodiments, the heat exchanger further comprises fins disposed between adjacent heat exchange tubes, and the fins are disposed between adjacent ones of the partially straight sections of each of the heat exchange tubes.
In some embodiments, the third straight section comprises a first section opposite the first straight section, a second section opposite the second straight section, and a third section connecting the first and second sections; the heat exchanger comprises a first area, a second area and a third area, wherein the first area comprises first sections of the first straight sections, the fourth straight sections and the third straight sections of at least two heat exchange tubes, the second area comprises second straight sections, the fifth straight sections and second sections of the third straight sections of at least two heat exchange tubes, the third area comprises third sections of the third straight sections of at least two heat exchange tubes, the fins are arranged in the first area and the second area, and the fins are not arranged in the third area.
In some embodiments, a plurality of the straight sections are arranged in a thickness direction of the straight sections, the first straight section and the second straight section of each of the heat exchange tubes are spaced apart in the thickness direction of the straight sections by the remaining straight sections and the bent sections, at least two of the heat exchange tubes include a first heat exchange tube, a second heat exchange tube, a third heat exchange tube, and a fourth heat exchange tube which are adjacently disposed, the first straight section of the first heat exchange tube is disposed adjacent to the first straight section of the second heat exchange tube, the second straight section of the second heat exchange tube is arranged adjacent to the second straight section of the first heat exchange tube, the second straight section of the third heat exchange tube is arranged adjacent to the second straight section of the second heat exchange tube and the second straight section of the fourth heat exchange tube, the first straight section of the third heat exchange tube is adjacent to the first straight section of the fourth heat exchange tube;
the length of the first straight section of the first heat exchange tube is greater than that of the second straight section of the first heat exchange tube, the length of the second straight section of the second heat exchange tube is greater than that of the first straight section of the second heat exchange tube, the length of the second straight section of the third heat exchange tube is greater than that of the first straight section of the third heat exchange tube, and the length of the first straight section of the fourth heat exchange tube is greater than that of the second straight section of the fourth heat exchange tube.
In some embodiments, in each of the heat exchange tubes, the plurality of straight sections further includes a third straight section, the at least two bent sections include a first bent section and a second bent section, the first bent section connects the first straight section and the third straight section, the second bent section connects the second straight section and the third straight section, the second bent section of the first heat exchange tube and the first bent section of the second heat exchange tube are oppositely arranged in the length direction of the straight section, and the first bent section of the third heat exchange tube and the second bent section of the fourth heat exchange tube are oppositely arranged in the length direction of the straight section.
In some embodiments, the heat exchanger further includes a distribution pipe, a first end of the distribution pipe is a fluid inlet, a second end of the distribution pipe extends into one of the first collecting pipe and the second collecting pipe, a pipe wall of the distribution pipe is provided with a plurality of through holes, the distribution pipe is communicated with the one of the first collecting pipe and the second collecting pipe through the through holes, and the at least two heat exchange pipes are communicated with the distribution pipe through the one of the first collecting pipe and the second collecting pipe.
Drawings
FIG. 1 is a schematic diagram of a heat exchanger according to one embodiment of the present application.
Fig. 2 is an exploded schematic view of the heat exchanger of fig. 1.
Fig. 3 is a schematic cross-sectional view of the heat exchanger of fig. 1.
Fig. 4 is a schematic view of the structure of the adjacent heat exchange tube in fig. 1.
Fig. 5 is a schematic structural view of a heat exchanger according to another embodiment of the present application.
Fig. 6 is an exploded schematic view of the heat exchanger of fig. 5.
Fig. 7 is a schematic cross-sectional view of the heat exchanger of fig. 5.
Fig. 8 is a schematic view of the structure of the adjacent heat exchange tube in fig. 5.
FIG. 9 is a schematic diagram of a heat exchanger according to yet another embodiment of the present application.
Fig. 10 is a side schematic view of the heat exchanger of fig. 9.
FIG. 11 is a schematic diagram of a heat exchanger according to yet another embodiment of the present application.
Fig. 12 is an exploded schematic view of the heat exchanger of fig. 11.
Fig. 13 is a schematic cross-sectional view of the heat exchanger of fig. 11.
Fig. 14 is a schematic view of the structure of the adjacent heat exchange tube in fig. 11.
Reference numerals:
the heat exchanger comprises a heat exchanger 100, a first area 101, a second area 102, a third area 103, a first header 1, a second header 2, a heat exchange tube 3, a straight section 31, a first straight section 311, a second straight section 312, a third straight section 313, a first section 3131, a second section 3132, a third section 3133, a fourth straight section 314, a fifth straight section 315, a bending section 32, a first bending section 321, a second bending section 322, a third bending section 323, a fourth bending section 324, a first heat exchange tube 301, a second heat exchange tube 302, a third heat exchange tube 303, a fin 4, a distribution tube 5, a through hole 51 and a side plate 6.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the device or fixture in question must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
As shown in fig. 1 to 14, a heat exchanger 100 according to an embodiment of the present application includes: the heat exchanger comprises a first collecting pipe 1, a second collecting pipe 2 and at least two heat exchange pipes 3, wherein the first collecting pipe 1 and the second collecting pipe 2 are arranged at intervals. As shown in fig. 1, the first header 1 and the first header 2 both extend in the left-right direction, and the first header 1 and the second header 2 are spaced apart in the up-down direction.
One end of the heat exchange tube 3 is connected with the first collecting pipe 1, the other end of the heat exchange tube 3 is connected with the second collecting pipe 2, namely, the heat exchange tube 3 is connected between the first collecting pipe 1 and the second collecting pipe 2. As shown in fig. 1, at least two heat exchange tubes 3 are arranged at intervals in the left-right direction, and each heat exchange tube 3 is connected to a first collecting pipe 1 and a second collecting pipe 2 to communicate the first collecting pipe 1 and the second collecting pipe 2.
Each heat exchange tube 3 comprises a plurality of straight sections 31 and at least two bent sections 32, and adjacent straight sections 31 are connected through the bent sections 32. In other words, one straight section 31 of two adjacent straight sections 31 is connected to one end of the bent section 32, and the other straight section 31 of two adjacent straight sections 31 is connected to the other end of the bent section 32. Namely, the heat exchange tube 3 is provided with one straight section 31, one bent section 32, one straight section 31 and one bent section 32 … ….
The length direction of the straight sections 31 is substantially the same as the direction from the first header 1 toward the second header 2, and the adjacent straight sections 31 are arranged in the thickness direction of the straight sections 31. As shown in fig. 1, the length direction of the straight section 31 is the up-down direction, the thickness direction of the straight section 31 is the left-right direction, and two adjacent straight sections 31 are arranged in order in the left-right direction.
The at least two straight sections 31 of each heat exchange tube 3 comprise a first straight section 311 and a second straight section 312, the first straight section 311 is connected with the first collecting pipe 1, and the second straight section 312 is connected with the second collecting pipe 2 so as to communicate the first collecting pipe 1 and the second collecting pipe 2. In other words, one flat section 31 of the at least two flat sections 31 of each heat exchange tube 3 is connected to the first header 1, and the other flat section 31 of the at least two flat sections 31 of each heat exchange tube 3 is connected to the second header 2, so that the heat exchange tube 3 is communicated with both the first header 1 and the second header 2.
Wherein the first straight sections 311 of the adjacent heat exchange tubes 3 are adjacently disposed. In other words, two adjacent heat exchange tubes 3 are arranged adjacent to the straight section 31 connected to the first header 1, i.e. there is no other straight section 31 between the two straight sections 31.
And/or the second straight sections 312 of adjacent heat exchange tubes 3 are adjacently arranged. In other words, two adjacent heat exchange tubes 3 are arranged adjacent to the straight section 31 connected to the second header 2, i.e. there is no other straight section 31 between the two straight sections 31.
According to the heat exchanger 100 of the application, at least two heat exchange tubes 3 are arranged and connected between the first collecting pipe 1 and the second collecting pipe 2, each heat exchange tube 3 comprises a plurality of straight sections 31 and at least two bending sections 32, one straight section 31 is connected with the first collecting pipe 1 and the other straight section 31 is connected with the second collecting pipe 2 in each heat exchange tube 3, therefore, each heat exchange tube 3 is relatively long, the number of the heat exchange tubes 3 between the first collecting pipe 1 and the second collecting pipe 2 is relatively small, the circulating area is relatively small, the flow velocity of refrigerant is relatively high, and the heat exchange effect in the heat exchange tubes 3 is improved.
In addition, by adjacently arranging the one straight section 31 of the two adjacent heat exchange tubes 3 or adjacently arranging the other straight section 31 of the adjacent heat exchange tube 3, the temperature between the adjacent heat exchange tubes can be ensured to be close, so that the problems of heat bridge effect and thermal stress can be avoided, and the heat exchange performance of the heat exchanger 100 can be improved.
In some alternative embodiments, as shown in fig. 1 to 4, a plurality of straight sections 31 are arranged in the thickness direction of the straight sections 31, and the first straight section 311 and the second straight section 312 of each heat exchange tube 3 are spaced apart in the thickness direction of the straight sections 31 by the remaining straight sections 31 thereof and the plurality of bent sections 32. In other words, the plurality of straight sections 31 are sequentially arranged in the left-right direction, the straight sections 31 of each heat exchange tube 3 connected to the first header 1 and the second header 2 are arranged at intervals in the left-right direction, and the remaining straight sections 31 and at least two bent sections 32 are arranged between the straight sections 31 connected to the first header 1 and the second header 2.
In the present embodiment, as shown in fig. 1 to 4, a straight section 31 and two bent sections 32 are provided between the straight sections 31 connected to the first header 1 and the second header 2. It is understood that the space between the first straight section 311 and the second straight section 312 of the heat exchange tube 3 in the present application is not limited to only one straight section 31, and there may be at least two straight sections 31.
The at least two heat exchange tubes 3 comprise a first heat exchange tube 301, a second heat exchange tube 302 and a third heat exchange tube 303 which are adjacently arranged, the second heat exchange tube 302 is positioned between the first heat exchange tube 301 and the third heat exchange tube 303, a first straight section 311 of the first heat exchange tube 301 is adjacently arranged with a first straight section 311 of the second heat exchange tube 302, and a second straight section 312 of the second heat exchange tube 302 is adjacently arranged with a second straight section 312 of the third heat exchange tube 303.
In other words, three adjacent heat exchange tubes 3 of the at least two heat exchange tubes 3 are a first heat exchange tube 301, a second heat exchange tube 302 and a third heat exchange tube 303, and the first heat exchange tube 301, the second heat exchange tube 302 and the third heat exchange tube 303 are sequentially arranged along the left-right direction, wherein a first straight section 311 connected with the first collecting pipe 1 in the first heat exchange tube 301 is arranged adjacent to a first straight section 311 connected with the first collecting pipe 1 in the second heat exchange tube 302, that is, no other straight sections 31 exist between the two straight sections 31 in the left-right direction. And the second straight section 312 connected with the second header 2 in the second heat exchange tube 302 is arranged adjacent to the second straight section 312 connected with the second header 2 in the third heat exchange tube 303, i.e. there is no other straight section 31 between the two straight sections 31 in the left-right direction.
Alternatively, as shown in fig. 3 and 4, the second straight section 312 of the first heat exchange tube 301 is disposed adjacent to the second straight section 312 of the left heat exchange tube disposed adjacent thereto, and the first straight section 311 of the third heat exchange tube 303 is disposed adjacent to the first straight section 311 of the right heat exchange tube disposed adjacent thereto.
In some specific embodiments, the heat exchange tubes 3 extend in a substantially S-shaped curve, and in each heat exchange tube 3, the lengths of the first straight section 311 and the second straight section 312 are substantially the same, one end of the remaining straight sections 31 in the length direction is adjacent to the first collecting pipe 1 and has a gap with the first collecting pipe 1, and the other end of the remaining straight sections 31 in the length direction is adjacent to the second collecting pipe 2 and has a gap with the second collecting pipe 2.
As shown in fig. 3 and 4, each heat exchange tube 3 is substantially S-shaped.
In each heat exchange tube 3, each flat section 31 extends in the up-down direction, the lower end of the first flat section 311 is below the lower end of the second flat section 312 so as to be inserted into the first header 1, the upper end of the second flat section 312 is above the upper end of the second flat section 311 so as to be inserted into the second header 2, and the length of the first flat section 311 is substantially the same as the length of the second flat section 312. The third flat section 313 is located between the first flat section 311 and the second flat section 312 as the remaining flat section. The length of the third straight section 313 is smaller than that of the first straight section 311, that is, the length of the second straight section 312, and the upper end of the third straight section 313 is spaced apart from the second header 2 in the up-down direction and the lower end of the third straight section 313 is spaced apart from the first header 1 in the up-down direction.
Each bending segment 32 extends along the horizontal direction and connects two adjacent straight segments 31. The dimensions of the at least two bending segments 32 in the left-right direction are substantially the same. The at least two bending sections 32 include a first bending section 321 and a second bending section 322, the first bending section 321 connects the upper end of the first straight section 311 and the upper end of the third straight section 313, and the second bending section 322 connects the lower end of the third straight section 313 and the lower end of the second straight section 312. The first bending section 321 is vertically spaced apart from the second header 2, and the second bending section 322 is vertically spaced apart from the first header 1. It will be appreciated that each bend 32 is spaced from the header in the up and down direction. The length of the first bending section 321 in the left-right direction is substantially the same as the length of the second bending section 322 in the left-right direction.
It is understood that one or at least two straight sections 31 may be disposed between the first straight section 311 and the second straight section 312, that is, may not be limited to the above-mentioned one third straight section 313.
The plurality of heat exchange tubes 3 can have the same shape and size, and can also be adjusted according to actual needs. The shape of the heat exchange tube 3 may be substantially U-shaped, substantially S-shaped, etc. as long as the flow of the refrigerant in the heat exchange tube 3 is not affected. It is to be understood that the present application is not limited thereto.
Optionally, the heat exchange tubes 3 are microchannel flat tubes. Optionally, one heat exchange tube 3 is formed by bending one flat tube.
The flat tube comprises at least one channel extending in the length direction of the flat tube. The flat pipe is beneficial to reducing the weight and the size of the air conditioner. The flat tubes are usually provided with a plurality of channels for the flow of refrigerant therein, and adjacent channels are isolated from each other. The flat pipe is flat and has a width larger than the thickness. The length direction of the flat pipe is the flowing direction of the refrigerant determined by the channel in the flat pipe. The length direction of the flat pipe can be a straight line type, a broken line type, a bending type and the like. The flat tube described here is not limited to this type, and may be in other forms. For example, adjacent channels may not be completely isolated. For another example, all of the channels may be arranged in upper and lower rows, as long as the width is still greater than the thickness.
In some specific embodiments, the heat exchanger 100 further comprises fins 4, the fins 4 being provided between adjacent straight sections 31 of each heat exchange tube 3 and between adjacent heat exchange tubes 3, and the fins 4 being provided at one end in the length direction thereof adjacent to one end of the remaining straight sections 31 in the length direction thereof, and the fins 4 being provided at the other end in the length direction thereof adjacent to the other end of the remaining straight sections 31 in the length direction thereof.
In other words, one fin 4 is shared between two adjacent straight sections 31 in each heat exchange tube 3, one fin 4 is shared between two adjacent heat exchange tubes, and both ends of the fin 4 in the length direction thereof are respectively adjacent to both ends of the remaining straight sections 31 in the length direction. The arrangement of the fins 4 can improve the heat exchange area of the two adjacent heat exchange tubes 3 and improve the heat exchange efficiency of the heat exchanger 1.
As shown in fig. 3, in each heat exchange tube 3, one fin 4 is shared between the first straight section 311 and the third straight section 313, and one fin 4 is shared between the third straight section 313 and the second straight section 312. Of the adjacent heat exchange tubes 3, for example, one fin 4 is shared between the first straight section 311 of the first heat exchange tube 301 and the first straight section 311 of the second heat exchange tube 302, and one fin 4 is shared between the second straight section 312 of the second heat exchange tube 302 and the second straight section 312 of the third heat exchange tube 303. The upper end of the fin 4 is substantially flush with the upper end of the third straight section 313, and the lower end of the fin 4 is substantially flush with the lower end of the third straight section 313.
In other alternative embodiments, as shown in fig. 5 to 8, the first straight section 311 and the second straight section 312 of each heat exchange tube 3 are arranged along the length direction of the straight section 31, a part of the straight sections 31 among the plurality of straight sections 31 is arranged along the thickness direction of the straight section 31, at least two heat exchange tubes 3 include a first heat exchange tube 301 and a second heat exchange tube 302 which are adjacently disposed, the first straight section 311 of the first heat exchange tube 301 is disposed adjacent to the first straight section 311 of the second heat exchange tube 302, and the second straight section 312 of the first heat exchange tube 301 is disposed adjacent to the second straight section 312 of the second heat exchange tube 302.
As shown in fig. 5 to 8, a first straight section 311 connected to the first header 1 and a second straight section 312 connected to the second header 2 in each heat exchange tube 3 are sequentially arranged in the up-down direction, and a partially straight section 31 exists among the plurality of straight sections 31 in each heat exchange tube 3, and the partially straight sections 31 are sequentially arranged in the left-right direction.
A first heat exchange tube 301 and a second heat exchange tube 302 which are adjacently arranged and sequentially arranged from left to right are arranged between the first collecting tube 1 and the second collecting tube 2, a first straight section 311 of the first heat exchange tube 301 connected with the first collecting tube 1 is adjacent to a first straight section 311 of the second heat exchange tube 302 connected with the first collecting tube 1, and a second straight section 312 of the first heat exchange tube 301 connected with the second collecting tube 2 is adjacent to a second straight section 312 of the second heat exchange tube 302 connected with the second collecting tube 2.
In some specific embodiments, the plurality of straight sections 31 of each heat exchange tube 3 further includes a third straight section 313, a fourth straight section 314, and a fifth straight section 315, the first straight section 311, the fourth straight section 314, and the third straight section 313 are arranged in the thickness direction of the straight section 31, the second straight section 312, the fifth straight section 315, and the third straight section 313 are arranged in the thickness direction of the straight section 31, and the fourth straight section 314 and the fifth straight section 315 are arranged in the length direction of the straight section 31.
As shown in fig. 5 to 8, a third straight section 313, a fourth straight section 314 and a fifth straight section 315 are connected between the first straight section 311 and the second straight section 312 of each heat exchange tube 3, and the length of the first straight section 311, the length of the second straight section 312, the length of the fourth straight section 313 and the length of the fifth straight section 315 are all smaller than the length of the third straight section 313. The first straight section 311 and the second straight section 312 are arranged in this order in the up-down direction, and the fourth straight section 314 and the fifth straight section 315 are arranged in this order in the up-down direction. The first straight section 311, the fourth straight section 314, and the third straight section 313 are sequentially arranged in the left-right direction, and the second straight section 312, the fifth straight section 315, and the third straight section 313 are sequentially arranged in the left-right direction.
The at least two bending sections 32 include a first bending section 321, a second bending section 322, a third bending section 323 and a fourth bending section 324, the first bending section 321 connects one end of the third straight section 313 in the length direction and one end of the fourth straight section 314 in the length direction, the second bending section 322 connects the other end of the third straight section 313 in the length direction and the other end of the fifth straight section 315 in the length direction, the third bending section 323 connects the other end of the first straight section 311 in the length direction and the other end of the fourth straight section 314 in the length direction, the fourth bending section 324 connects one end of the second straight section 312 in the length direction and one end of the fifth straight section 315 in the length direction, one end of the first straight section 311 in the length direction is connected to the first header 1, and the other end of the second straight section 312 in the length direction is connected to the second header 2.
The refrigerant entering the heat exchange tube 3 from the first header 1 sequentially passes through the first straight section 311, the fourth straight section 314, the third straight section 313, the fifth straight section 315 and the second straight section 312 and enters the second header 2.
As shown in fig. 5 to 8, the lower end of the third straight section 313 is connected to the fourth straight section 314 through the first bending section 321, the upper end of the third straight section 313 is connected to the fifth straight section 315 through the second bending section 322, the upper end of the first straight section 311 is connected to the fourth straight section 314 through the third bending section 323, and the lower end of the second straight section 312 is connected to the fifth straight section 315 through the fourth bending section 324.
The third bent section 323 and the fourth bent section 324 have a pitch in the up-down direction.
Further, the third bent section 323 and the fourth bent section 324 are oppositely disposed in the length direction of the straight section 31, and the first bent section 321 and the second bent section 322 are oppositely disposed in the length direction of the straight section 31. As shown in fig. 7 and 8, the third bent section 323 and the fourth bent section 324 have substantially the same dimension in the left-right direction and are disposed opposite to each other in the up-down direction. The first bending section 321 and the second bending section 322 have substantially the same size in the left-right direction and are disposed opposite to each other in the up-down direction.
Alternatively, as shown in fig. 8, for the second heat exchange tube 302 and the first heat exchange tube 301 which are adjacently arranged and arranged in sequence from left to right, the first straight section 311 of the second heat exchange tube 302 is adjacently arranged with the first straight section 311 of the first heat exchange tube 301 on the left side thereof, the second straight section 312 of the second heat exchange tube is adjacently arranged with the second straight section 312 of the first heat exchange tube 301 on the left side thereof, and the third straight section 313 of the second heat exchange tube 302 is adjacently arranged with the third straight section 313 of the first heat exchange tube 301 on the right side thereof.
In some specific embodiments, the heat exchanger 100 further comprises fins 4, the fins 4 being provided between adjacent heat exchange tubes 3 and between adjacent flat sections 31 in the partially flat section 31 of each heat exchange tube 3. In other words, the fin 4 is provided between adjacent straight sections 31 arranged in order in the left-right direction in each heat exchange tube 3, and the fin 4 is provided between adjacent heat exchange tubes 3.
As shown in fig. 5 to 7, in each heat exchange tube 3, fins 4 are provided between the first straight section 311 and the fourth straight section 314, between the fourth straight section 314 and the third straight section 313, between the second straight section 312 and the fifth straight section 315, and between the fifth straight section 315 and the third straight section 313. A fin 4 is arranged between the adjacent heat exchange tubes 3, and as shown in fig. 7 and 8, the fin 4 is arranged between the third straight section 313 of the first heat exchange tube 301 and the third straight section 313 of the second heat exchange tube 302 in the first heat exchange tube 301 and the second heat exchange tube 302 which are arranged in sequence from left to right; in the second heat exchange tube 302 and the first heat exchange tube 301 which are sequentially arranged from left to right, the first straight section 311 of the second heat exchange tube 302 and the first straight section 311 of the first heat exchange tube 301 are adjacently arranged, a fin 4 is arranged between the first straight section 311 of the second heat exchange tube 302 and the first straight section 311 of the first heat exchange tube 301, the second straight section 312 of the second heat exchange tube 302 and the second straight section 312 of the first heat exchange tube 301 are adjacently arranged, and a fin 4 is arranged between the second straight section 312 of the second heat exchange tube 302 and the second straight section 312 of the first heat exchange tube 301.
Further, the third straight section 313 includes a first section 3131 opposite to the first straight section 311, a second section 3132 opposite to the second straight section 312, and a third section 3133 connecting the first section 3131 and the second section 3132, and no fin 4 is disposed between the third sections 3133 of the adjacent heat exchange tubes 3. As shown in fig. 7 and 8, the third straight section 313 includes a first section 3131, a third section 3133 and a second section 3132 which are connected in sequence in a direction from bottom to top, wherein the first section 3131 is arranged opposite to the first straight section 311 in the left-right direction, the second section 3132 is arranged opposite to the second straight section 312 in the left-right direction, and the third section 3133 corresponds to a gap between the third bent section 313 and the fourth bent section 314 in the left-right direction. Of the first and second heat exchange tubes 301 and 302 arranged in sequence from left to right, a fin 4 is disposed between a first section 3131 of the first heat exchange tube 301 and a first section 3131 of the second heat exchange tube 302, a fin 4 is disposed between a second section 312 of the first heat exchange tube 301 and a second section 3132 of the second heat exchange tube 302, but no fin is disposed between a third section 3133 of the first heat exchange tube 301 and a third section 3133 of the second heat exchange tube 302.
In some specific embodiments, the heat exchanger 100 includes a first region 101, a second region 102, and a third region 103, the first region 101 includes a first section 3131 of a first, fourth, and third straight sections 311, 314, 313 of at least two heat exchange tubes 3, the second region 102 includes a second straight section 312, a fifth straight section 315, and a third section 3132 of the third straight section 313 of at least two heat exchange tubes 3, the third region 103 includes a third section 3133 of the third straight section 313 of at least two heat exchange tubes 3, the first and second regions 101, 102 are provided with fins 4, and the third region 103 is not provided with fins 4.
As shown in fig. 7 and 8, all of the first straight sections 311, all of the first sections 3131 of the third straight sections 313, and the region corresponding to the first section 3131 in the left-right direction between the first header 1 and the second header 2 form the first region 101. All the second straight sections 312, all the second sections 3132 of the third straight sections 313, and the region corresponding to the second section 3132 in the left-right direction between the first header 1 and the second header 2 form the second region 102. The third section 3133 of all the third straight sections 313 between the first header 1 and the second header 2 and the region corresponding to the third section 3133 in the left-right direction form the third region 103. Wherein the first area 101 and the second area 102 are both provided with fins 4 and the third area 103 is free of fins 4.
Further, as shown in fig. 9 and 10, the heat exchanger 100 is twisted and bent at the third region 103 to make the first region 101 and the second region 102 have a predetermined angle. In other words, the heat exchange tube 3 is twisted and bent at the third section 3133 of the third straight section 313 to have a predetermined angle between the first header 1 and the second header 2. For example, when the predetermined included angle is greater than 0 °, the bent heat exchanger 100 is a substantially a-shaped heat exchanger, and when the predetermined included angle is equal to 0 °, the bent heat exchanger 100 is a double-layer heat exchanger in which the first region 101 and the second region 102 are arranged side by side in the air intake direction, as shown in fig. 9 and 10.
In still other alternative embodiments, as shown in fig. 11 to 14, a plurality of straight sections 31 are arranged in the thickness direction of the straight sections 31, and the first straight section 311 and the second straight section 312 of each heat exchange tube 3 are spaced apart in the thickness direction of the straight sections 31 by the remaining straight sections 31 and the bent sections 32 thereof. The plurality of straight sections 31 are sequentially arranged in the left-right direction, the straight sections 31 of each heat exchange tube 3 connected with the first collecting pipe 1 and the second collecting pipe 2 are arranged at intervals in the left-right direction, and the other straight sections 31 and at least two bending sections 32 are arranged between the straight sections 31 connected with the first collecting pipe 1 and the second collecting pipe 2.
In this embodiment, as shown in fig. 11 to 14, a straight section 31 and two bent sections 32 are provided between the straight sections 31 connected to the first header 1 and the second header 2. It is understood that the first straight section 311 and the second straight section 312 in this application are not limited to only one straight section 31, and there may be at least two straight sections 31.
The at least two heat exchange tubes 3 include a first heat exchange tube 301, a second heat exchange tube 302, a third heat exchange tube 303 and a fourth heat exchange tube 304 which are adjacently arranged, a first straight section 311 of the first heat exchange tube 301 is adjacently arranged with a first straight section 311 of the second heat exchange tube 302, a second straight section 312 of the first heat exchange tube 301 is adjacently arranged with a second straight section 312 of the second heat exchange tube 302, a second straight section 312 of the third heat exchange tube 303 is adjacently arranged with a second straight section 312 of the second heat exchange tube 302 and a second straight section 312 of the fourth heat exchange tube 304, and the first straight section 311 of the third heat exchange tube 303 is adjacently arranged with the first straight section 311 of the fourth heat exchange tube 304.
As shown in fig. 13 and 14, four adjacent heat exchange tubes 3 of the at least two heat exchange tubes 3 are a first heat exchange tube 301, a second heat exchange tube 302, a third heat exchange tube 303 and a fourth heat exchange tube 304, the first heat exchange tube 301, the second heat exchange tube 302, the third heat exchange tube 303 and the fourth heat exchange tube 304 are sequentially arranged along the left-right direction, a first straight section 311 of the first heat exchange tube 301 connected to the first header 1 is adjacent to a first straight section 311 of the second heat exchange tube 302 connected to the first header 1, that is, there is no other straight section 31 between the two straight sections 31 in the left-right direction. The second straight section 312 of the first heat exchange tube 301 connected to the second header 2 is adjacent to the second straight section 312 of the second heat exchange tube 302 connected to the second header 2, that is, there is no other straight section 31 between the two straight sections 31 in the left-right direction. The second straight section 312 of the third heat exchange tube 303 and the second straight section 312 of the second heat exchange tube 302 are adjacently arranged, the second straight section 312 of the third heat exchange tube 303 is adjacently disposed to the second straight section 312 of the fourth heat exchange tube 304, and the first straight section 311 of the third heat exchange tube 303 is adjacently disposed to the first straight section 311 of the fourth heat exchange tube 304.
In some specific embodiments, the length of the first straight section 311 of the first heat exchange tube 301 is greater than the length of the second straight section 312 of the first heat exchange tube 301, the length of the second straight section 312 of the second heat exchange tube 302 is greater than the length of the first straight section 311 of the second heat exchange tube 302, the length of the second straight section 312 of the third heat exchange tube 303 is greater than the length of the first straight section 311 of the third heat exchange tube 303, and the length of the first straight section 311 of the fourth heat exchange tube 304 is greater than the length of the second straight section 312 of the fourth heat exchange tube 304. As shown in fig. 14, in the first heat exchange pipe 301, the size of the first straight section 311 in the up-down direction is larger than that of the second straight section 312 in the up-down direction. In the second heat exchange pipe 302, the size of the second straight section 312 in the up-down direction is larger than that of the first straight section 311 in the up-down direction. In the third heat exchange pipe 303, the size of the second straight section 312 in the up-down direction is larger than that of the first straight section 311 in the up-down direction. In the fourth heat exchange pipe 304, the size of the first straight section 311 in the up-down direction is larger than that of the second straight section 312 in the up-down direction.
In other words, the at least two heat exchange tubes 3 include a first heat exchange tube group including a first heat exchange tube 301 and a second heat exchange tube 302 adjacently arranged and a second heat exchange tube group including a third heat exchange tube 303 and a fourth heat exchange tube 304 adjacently arranged, wherein in the first heat exchange tube group, the first flat section 311 of the first heat exchange tube 301 and the first flat section 311 of the second heat exchange tube 302 are adjacently arranged, and the second flat section 312 of the first heat exchange tube 301 and the second flat section 312 of the second heat exchange tube 302 are adjacently arranged. In the second heat exchange tube set, the first straight section 311 of the third heat exchange tube 303 and the first straight section 311 of the fourth heat exchange tube 304 are adjacently arranged, and the second straight section 312 of the third heat exchange tube 303 and the second straight section 312 of the fourth heat exchange tube 304 are adjacently arranged. For the first heat exchange tube set and the second heat exchange tube set, the second straight section 312 of the second heat exchange tube 302 and the second straight section 312 of the third heat exchange tube 303 are adjacently arranged.
Further, in each heat exchange tube 3, the plurality of straight sections 31 further includes a third straight section 313. As shown in fig. 14, the first straight section 311 and the second straight section 312 have a third straight section 313 therebetween. It is understood that the third straight section 313 is not limited to one, and there may be at least two.
The first straight section 311, the third straight section 313, and the second straight section 312 are sequentially arranged in the left-right direction. The lower end of the third straight section 313 in the first heat exchange tube 301 is flush with the lower end of the second straight section 312, the upper end of the third straight section 313 is located below the upper end of the second straight section 312, so that the upper end of the second straight section 312 is inserted into the second header 2, and the third straight section 313 is spaced apart from the second header 2 in the up-down direction. The upper end of the third straight section 313 in the second heat exchange tube 302 is flush with the upper end of the first straight section 311, the lower end of the third straight section 313 is located above the lower end of the first straight section 311, so that the lower end of the first straight section 311 is inserted into the first header 1, and the third straight section 313 is spaced apart from the first header 1 in the up-down direction.
In each heat exchange tube 3, the at least two bending sections 32 comprise a first bending section 321 and a second bending section 322, the first bending section 321 connects the first straight section 311 and the third straight section 313, and the second bending section 322 connects the second straight section 312 and the third straight section 313. In other words, one end of the first straight section 311 is connected to the first header 1, the other end of the first straight section 312 is connected to the other end of the third straight section 313 through the first bent section 321, one end of the third straight section 313 is connected to one end of the second straight section 312 through the second bent section 322, and the other end of the second straight section 312 is connected to the second header 2. Wherein the second bent section 322 of one heat exchange tube 3 and the first bent section 321 of the other heat exchange tube 3 of the adjacent heat exchange tubes 3 are sequentially arranged in the up-down direction.
The second bent section 322 of the first heat exchange tube 301 and the first bent section 321 of the second heat exchange tube 302 are oppositely arranged in the length direction of the straight section 31, and the first bent section 321 of the third heat exchange tube 303 and the second bent section 322 of the fourth heat exchange tube 304 are oppositely arranged in the length direction of the straight section 31.
As shown in fig. 13 and 14, of the adjacent first heat exchange tube 301 and second heat exchange tube 302, the second straight section 312 of the first heat exchange tube 301 and the third straight section 313 of the second heat exchange tube 302 are arranged opposite to and spaced apart from each other in the up-down direction, and the third straight section 313 of the first heat exchange tube 301 and the first straight section 311 of the second heat exchange tube 302 are arranged opposite to and spaced apart from each other in the up-down direction, that is, the second bent section 322 of the first heat exchange tube 301 and the first bent section 321 of the second heat exchange tube 302 are arranged opposite to and spaced apart from each other in the up-down direction. In the adjacent third heat exchange tube 303 and the fourth heat exchange tube 304, the first straight section 311 of the third heat exchange tube 303 and the third straight section 313 of the fourth heat exchange tube 304 are arranged oppositely and at intervals in the up-down direction, and the third straight section 313 of the third heat exchange tube 303 and the second straight section 312 of the fourth heat exchange tube 304 are arranged oppositely and at intervals in the up-down direction, that is, the first bent section 321 of the third heat exchange tube 303 and the second bent section 322 of the fourth heat exchange tube 304 are arranged oppositely and at intervals in the up-down direction.
The first bent section 321 of the first heat exchange tube 301 is spaced apart from the second header 2 in the vertical direction, the second bent section 322 of the second heat exchange tube 302 is spaced apart from the first header 1 in the vertical direction, the second bent section 322 of the third heat exchange tube 303 is spaced apart from the first header 1 in the vertical direction, and the first bent section 321 of the fourth heat exchange tube 304 is spaced apart from the second header 2 in the vertical direction. Thus, the heat exchange tube 3 can be prevented from being corroded by spacing the bent segments 32 from the corresponding headers in the up-down direction.
In some specific embodiments, the heat exchanger 100 further comprises fins 4, the fins 4 being disposed between adjacent heat exchange tubes 3 and between adjacent straight sections 31 of each heat exchange tube 3. As shown in fig. 13 and 14, in each heat exchange tube 3, fins 4 are provided between the first straight section 311 and the third straight section 313 and between the third straight section 313 and the second straight section 312. Of the adjacent two heat exchange tubes 3, for example, a first heat exchange tube 301 and a second heat exchange tube 302 are sequentially arranged from left to right, a fin 4 is arranged between a first straight section 311 of the first heat exchange tube 301 and a first straight section 311 of the second heat exchange tube 302, and a fin 4 is arranged between a second straight section 312 of the first heat exchange tube 301 and a second straight section 312 of the second heat exchange tube 302. For example, the second heat exchange tube 302 and the first heat exchange tube 301 are arranged from left to right in sequence, the second straight section 312 of the second heat exchange tube 302 and the first straight section 311 of the first heat exchange tube 301 are arranged adjacently, and the fin 4 is arranged between the second straight section 312 of the second heat exchange tube 302 and the first straight section 311 of the first heat exchange tube 301.
Further, the second bent section 322 of the first heat exchange tube 301 and the first bent section 321 of the second heat exchange tube 302 have a space in the length direction of the straight section 31, and no fin 4 is provided between the portion of the first heat exchange tube 301 opposite to the space and the portion of the second heat exchange tube 302 opposite to the space. The first bent section 321 of the third heat exchange tube 303 and the second bent section 322 of the fourth heat exchange tube 304 have a space in the length direction of the straight section 31, and no fin 4 is provided between the portion of the third heat exchange tube 303 opposite to the space and the portion of the fourth heat exchange tube 304 opposite to the space.
As shown in fig. 13 and 14, the second straight section 312 of the second heat exchange tube 302 comprises a first portion, a third portion and a second portion which are sequentially arranged along the direction from bottom to top, the first straight section 311 of the first heat exchange tube 301 comprises a first portion, a third portion and a second portion which are sequentially arranged along the direction from bottom to top, the second straight section 312 of the third heat exchange tube 303 comprises a first portion, a third portion and a second portion which are sequentially arranged along the direction from bottom to top, the first straight section 311 of the fourth heat exchange tube 304 comprises a first portion, a third portion and a second portion which are sequentially arranged along the direction from bottom to top,
the first portion of the first straight section 311 of the first heat exchange tube 301, the first straight section 311 of the second heat exchange tube 302, the first portion of the second straight section 312 of the third heat exchange tube 303, and the first portion of the first straight section 311 of the fourth heat exchange tube 304 are arranged relatively in the left-right direction; the second portion of the first straight section 311 of the first heat exchange tube 301, the second portion of the second straight section 312 of the second heat exchange tube 302, the second portion of the second straight section 312 of the third heat exchange tube 303, the second straight section 312 of the fourth heat exchange tube 304, and the second portion of the first straight section 311 of the fourth heat exchange tube 304 are arranged relatively in the left-right direction; a distance between the second bent section 322 of the first heat exchange tube 301 and the first bent section 321 of the second heat exchange tube 302, a third portion of the first straight section 311 of the first heat exchange tube 301, a third portion of the second straight section 322 of the second heat exchange tube 302, a distance between the first bent section 321 of the third heat exchange tube 303 and the second bent section 322 of the fourth heat exchange tube 304, a third portion of the second straight section 322 of the third heat exchange tube 303, and a third portion of the first straight section 311 of the fourth heat exchange tube 304 are oppositely arranged in the left-right direction.
Wherein no fin 4 is provided between the third portion of the first straight section 311 of the first heat exchange tube 301 and the third portion of the second straight section 312 of the second heat exchange tube 302, between the third portion of the second straight section 312 of the second heat exchange tube 302 and the third portion of the second straight section 312 of the third heat exchange tube 303, and between the third portion of the second straight section 312 of the third heat exchange tube 303 and the third portion of the first straight section 313 of the fourth heat exchange tube 303.
Further, the heat exchanger 100 comprises a first region 101, a second region 102 and a third region 104, wherein the first region 101 comprises a first portion of the first straight section 311 of the first heat exchange tube 301, the first straight section 311 of the second heat exchange tube 302, a first portion of the second straight section 312 of the third heat exchange tube 303, the second straight section 312 of the third heat exchange tube 303 and a first portion of the first straight section 311 of the fourth heat exchange tube 304.
The second region 102 includes a second portion of the first straight section 311 of the first heat exchange tube 301, the second straight section 311 of the first heat exchange tube 301, a second portion of the second straight section 312 of the second heat exchange tube 302, a second portion of the second straight section 312 of the third heat exchange tube 303, a second straight section 312 of the fourth heat exchange tube 304, and a second portion of the first straight section 311 of the fourth heat exchange tube 304.
The third region 103 includes a third portion of the first heat exchange tube 301, a third portion of the second heat exchange tube 302, a third portion of the third heat exchange tube 303, and a third portion of the fourth heat exchange tube 304.
The heat exchanger 100 is twisted and bent in the third region 103 to form the first region 101 at a predetermined angle with respect to the second region 102. For example, the bent heat exchanger 100 is a substantially a-shaped heat exchanger when the predetermined included angle is greater than 0 °, and the bent heat exchanger 100 is a double-layer heat exchanger with two rows in the air intake direction when the predetermined included angle is equal to 0 °.
In some embodiments, the heat exchanger 100 further includes a distribution pipe 5, a first end of the distribution pipe 5 is a fluid inlet, a second end of the distribution pipe 5 extends into one of the first collecting pipe 1 and the second collecting pipe 2, a pipe wall of the distribution pipe 5 is provided with a plurality of through holes 51, the distribution pipe 5 is communicated with one of the first collecting pipe 1 and the second collecting pipe 2 through the through holes 51, and the plurality of heat exchange pipes 3 are communicated with the distribution pipe 5 through one of the first collecting pipe 1 and the second collecting pipe 2.
As shown in fig. 1-14, one end of the distribution pipe 5 extends into the first header 1, in other words, the first header 1 is an inlet header and the second header 2 is an outlet header. The distribution pipe 5 is provided with a plurality of through holes 51 communicating the distribution pipe 5 and the first collecting pipe 1 on a section of pipe wall extending into the first collecting pipe 1, and the plurality of through holes 51 are sequentially arranged in the left-right direction. Moreover, all the heat exchange tubes 3 between the first collecting pipe 1 and the second collecting pipe 2 can be communicated with the distributing pipe 5 through the first collecting pipe 1, so that the refrigerant is uniformly distributed in each heat exchange tube 3, and the performance of the heat exchanger 100 is exerted to the greatest extent.
In some embodiments, the heat exchanger further comprises a side plate 6, the side plate 6 is provided on both sides of the heat exchange tube 3 in the left-right direction to fix the heat exchange tube 3, and a fin 4 is provided between the side plate 6 and the heat exchange tube 3 located on the outermost side in the left-right direction among the heat exchange tubes 3.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. A heat exchanger, comprising:
the device comprises a first collecting pipe (1) and a second collecting pipe (2), wherein the first collecting pipe (1) and the second collecting pipe (2) are arranged at intervals;
at least two heat exchange tubes (3), one end of each heat exchange tube (3) is connected with the first collecting pipe (1), the other end of each heat exchange tube is connected with the second collecting pipe (2), each heat exchange tube (3) comprises a plurality of straight sections (31) and at least two bending sections (32), the adjacent straight sections (31) are connected through the bending sections (32), the thickness direction of each straight section (31) is approximately parallel to the length direction of the first collecting pipe (1), the adjacent straight sections (31) are arranged along the thickness direction of the straight sections (31), the plurality of straight sections (31) comprise first straight sections (311) and second straight sections (312), the first straight sections (311) are connected with the first collecting pipe (1), the second straight sections are connected with the second collecting pipe (2) to communicate the first collecting pipe (1) and the second collecting pipe (2),
the first straight sections (311) of the adjacent heat exchange tubes (3) are arranged adjacently, and/or the second straight sections (312) of the adjacent heat exchange tubes (3) are arranged adjacently.
2. The heat exchanger according to claim 1, wherein a plurality of the straight sections (31) are arranged in the thickness direction of the straight sections (31), and the first straight section (311) and the second straight section (312) of each heat exchange tube (3) are spaced apart in the thickness direction of the straight sections (31) by the remaining straight sections (31) and the bent sections (32);
the at least two heat exchange tubes (3) comprise a first heat exchange tube (301), a second heat exchange tube (302) and a third heat exchange tube (303) which are adjacently arranged, the second heat exchange tube (302) is positioned between the first heat exchange tube (301) and the third heat exchange tube (303), the first straight section (311) of the first heat exchange tube (301) is adjacently arranged with the first straight section (311) of the second heat exchange tube (302), and the second straight section (312) of the second heat exchange tube (302) is adjacently arranged with the second straight section (312) of the third heat exchange tube (303).
3. A heat exchanger according to claim 2, wherein the heat exchange tubes (3) extend substantially in an S-shaped curve, and each heat exchange tube (3) has a first straight section (311) and a second straight section (312) of substantially the same length, one lengthwise end of the remaining straight section (31) is adjacent to the first header (1) with a gap therebetween, and the other lengthwise end of the remaining straight section (31) is adjacent to the second header (2) with a gap therebetween.
4. The heat exchanger according to claim 1, wherein the first straight section (311) and the second straight section (312) of each heat exchange tube (3) are arranged in a length direction of the straight section, and a part (31) of the plurality of straight sections (31) is arranged in a thickness direction of the straight section (31),
the at least two heat exchange tubes (3) comprise a first heat exchange tube (301) and a second heat exchange tube (302) which are adjacently arranged, the first straight section (311) of the first heat exchange tube (301) is adjacently arranged with the first straight section (311) of the second heat exchange tube (302), and the second straight section (312) of the first heat exchange tube (301) is adjacently arranged with the second straight section (312) of the second heat exchange tube (302).
5. The heat exchanger according to claim 4, wherein the plurality of straight sections (31) of each of the heat exchange tubes (3) further comprises a third straight section (313), a fourth straight section (314), and a fifth straight section (315), the first straight section (311), the fourth straight section (314), and the third straight section (313) are arranged in a thickness direction of the straight section (31), the second straight section (312), the fifth straight section (315), and the third straight section (313) are arranged in a thickness direction of the straight section (31), and the fourth straight section (314) and the fifth straight section (315) are arranged in a length direction of the straight section (31);
at least two bending sections (32) comprise a first bending section (321), a second bending section (322), a third bending section (323) and a fourth bending section (324), the first bending section (321) is connected with one end of the third straight section (313) in the length direction and one end of the fourth straight section (314) in the length direction, the second bending section (322) is connected with the other end of the third straight section (313) in the length direction and the other end of the fifth straight section (315) in the length direction, the third bending section (323) is connected with the other end of the first straight section (311) in the length direction and the other end of the fourth straight section (314) in the length direction, the fourth bending section (324) is connected with one end of the second straight section (312) in the length direction and one end of the fifth straight section (315) in the length direction, one end of the first straight section (311) in the length direction is connected with the first collecting pipe (1), the other end of the second straight section (312) in the length direction is connected with the second collecting pipe (2).
6. The heat exchanger according to claim 5, further comprising fins (4), the fins (4) being provided between adjacent heat exchange tubes (3), and the fins (4) being provided between adjacent ones (31) of the partially straight sections (31) of each of the heat exchange tubes (3).
7. The heat exchanger according to claim 6, wherein the third flat section (313) comprises a first section (3131) opposite the first flat section (311), a second section (3132) opposite the second flat section (312) and a third section (3133) connecting the first section (3131) and the second section (3132);
the heat exchanger (100) comprises a first zone (101), a second zone (102) and a third zone (103), the first zone (101) comprising the first (313), the fourth (314) and the first (3131) of the third (313) of at least two heat exchange tubes (3), the second zone (102) comprising the second (312), the fifth (315) and the second (3132) of the third (313) of at least two heat exchange tubes (3), the third zone (103) comprising the third (3133) of the third (313) of at least two heat exchange tubes (3), the first (101) and the second (102) zone being provided with the fins (4), at least part of the third zone (103) being provided with no fins (3133).
8. The heat exchanger according to claim 1, wherein a plurality of the straight sections (31) are arranged in a thickness direction of the straight sections (31), the first straight section (311) and the second straight section (312) of each heat exchange tube (3) are spaced apart in the thickness direction of the straight sections (31) by the remaining straight sections (31) and the bent sections (32),
the at least two heat exchange tubes (3) comprise a first heat exchange tube (301), a second heat exchange tube (302), a third heat exchange tube (303) and a fourth heat exchange tube (304) which are adjacently arranged, the first straight section (311) of the first heat exchange tube (301) is adjacently arranged with the first straight section (311) of the second heat exchange tube (302), the second straight section (312) of the second heat exchange tube (302) is adjacently arranged with the second straight section (312) of the first heat exchange tube (301), the second straight section (312) of the third heat exchange tube (303) is adjacently arranged with the second straight section (312) of the second heat exchange tube (302) and the second straight section (312) of the fourth heat exchange tube (304), and the first straight section (311) of the third heat exchange tube (303) is adjacently arranged with the first straight section (311) of the fourth heat exchange tube (304);
the length of the first straight section (311) of the first heat exchange tube (301) is greater than that of the second straight section (312) of the first heat exchange tube (301), the length of the second straight section (312) of the second heat exchange tube (302) is greater than that of the first straight section (311) of the second heat exchange tube (302), the length of the second straight section (312) of the third heat exchange tube (303) is greater than that of the first straight section (311) of the third heat exchange tube (303), and the length of the first straight section (311) of the fourth heat exchange tube (304) is greater than that of the second straight section (312) of the fourth heat exchange tube (304).
9. The heat exchanger according to claim 8, wherein in each of the heat exchange tubes, the plurality of straight sections (31) further comprises a third straight section (313), the at least two bent sections (32) comprise a first bent section (321) and a second bent section (322), and the first bent section (321) connects the first straight section (311) and the third straight section (313), the second bending section (322) connects the second straight section (312) and the third straight section (313), the second bent section (322) of the first heat exchange tube (301) and the first bent section (321) of the second heat exchange tube (302) are oppositely arranged in the length direction of the straight section (31), the first bent section (321) of the third heat exchange tube (303) and the second bent section (322) of the fourth heat exchange tube (304) are oppositely arranged in the length direction of the straight section (31).
10. The heat exchanger according to any one of claims 1 to 9, further comprising a distribution pipe (5), wherein a first end of the distribution pipe (5) is a fluid inlet, a second end of the distribution pipe (5) extends into one of the first collecting pipe (1) and the second collecting pipe (2), a plurality of through holes (51) are formed in a pipe wall of the distribution pipe (5), the distribution pipe (5) is communicated with the one of the first collecting pipe (1) and the second collecting pipe (2) through the through holes (51), and at least two of the heat exchange pipes are communicated with the distribution pipe (5) through the one of the first collecting pipe (1) and the second collecting pipe (2).
CN201910827052.9A 2019-09-03 2019-09-03 Heat exchanger Pending CN112444148A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005100894A1 (en) * 2004-04-06 2005-10-27 Modine Manufacturing Company Multi-pass heat exchanger
CN102384673A (en) * 2011-06-30 2012-03-21 三花丹佛斯（杭州）微通道换热器有限公司 Heat exchanger
JP2015090237A (en) * 2013-11-06 2015-05-11 パナソニックＩｐマネジメント株式会社 Heat exchanger
US20160084584A1 (en) * 2014-08-22 2016-03-24 Peregrine Turbine Technologies, Llc Heat exchanger for a power generation system
JP2017049003A (en) * 2015-09-04 2017-03-09 ダイキン工業株式会社 Heat exchanger
CN207196999U (en) * 2017-09-05 2018-04-06 杭州三花研究院有限公司 Heat exchanger and heat-exchange system, electric car
CN109780919A (en) * 2017-11-13 2019-05-21 杭州三花微通道换热器有限公司 A kind of multi-channel heat exchanger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005100894A1 (en) * 2004-04-06 2005-10-27 Modine Manufacturing Company Multi-pass heat exchanger
CN102384673A (en) * 2011-06-30 2012-03-21 三花丹佛斯（杭州）微通道换热器有限公司 Heat exchanger
JP2015090237A (en) * 2013-11-06 2015-05-11 パナソニックＩｐマネジメント株式会社 Heat exchanger
US20160084584A1 (en) * 2014-08-22 2016-03-24 Peregrine Turbine Technologies, Llc Heat exchanger for a power generation system
JP2017049003A (en) * 2015-09-04 2017-03-09 ダイキン工業株式会社 Heat exchanger
CN207196999U (en) * 2017-09-05 2018-04-06 杭州三花研究院有限公司 Heat exchanger and heat-exchange system, electric car
CN109780919A (en) * 2017-11-13 2019-05-21 杭州三花微通道换热器有限公司 A kind of multi-channel heat exchanger

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Application publication date: 20210305