JPH102692A - Bracket structure for heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bracket structure having a simple construction for connecting a heat exchanger and a receiver tank with each other. SOLUTION: In a bracket structure of a heat exchanger for connecting a receiver tank 2 for effecting gas-liquid separation of a heat exchanging medium to a header pipe 7 of a heat exchanger 1, the bracket 3 is provided at one side of a main body 20 of the bracket with a jointing face 21 conforming to a shape of the header pipe and is further provided at another side of the main body 20 with a jointing face 22 conforming to a shape of the receiver tank. A communicating hole 23 for making the jointing face conforming to the shape of the header pipe and the jointing face conforming to the shape of the receiver tank 2 communicate with each other is provided in the main body 20 of the bracket, and the header pipe 7 and the receiver tank 2 are provided with passage openings 14, 16 opened to the communicating hole 23 of the main body 20 of the bracket. Burrings 14a, 16a protruding toward the communicating hole 23 of the main body of the bracket are formed in the passage opening 14 of the header pipe 7 or in the passage opening 16 of the receiver tank 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembly structure of a bracket for connecting a receiver tank for separating a heat exchange medium into gas and liquid from a header pipe of a heat exchanger.

[0002]

2. Description of the Related Art Generally, as a heat exchange medium condensing device incorporated in a cooling cycle of an air conditioner, a refrigerator, or the like,
For example, a stacked heat exchanger is known. In this type of heat exchanger, a plurality of tubes and fins are alternately stacked,
Both ends of these stacked tubes are inserted and joined into insertion holes inserted into the header pipe. A partition plate for partitioning the header pipe in the longitudinal direction is provided at a required position of the header pipe, and the heat exchange medium flowing from an inlet joint provided in the header pipe meanders between the header pipes a plurality of times. Equipped with a flowing configuration.

[0003] A receiver tank may be connected to the heat exchanger in order to prevent a decrease in cooling capacity.
When the receiver tank is connected to the heat exchanger, the heat exchange medium that has been heat-exchanged with the external air through the fins of the heat exchanger to be in a gas-liquid two-phase state is passed through the receiver tank, and the receiver It is separated into gas and liquid by a dryer and a filter installed inside the tank to become a liquid single-phase heat exchange medium, flows into the heat exchanger again, is further heat-exchanged, flows out from the outlet joint, and circulates in the cooling cycle. . As described above, when the receiver tank is connected to the heat exchanger, the heat exchange medium is separated into gas and liquid by the receiver tank and becomes a liquid single-phase heat exchange medium containing no gas medium. The cooling cycle can be circulated without a decrease in the circulation amount, and a decrease in the cooling capacity can be prevented.

[0004] The receiver tank is usually configured to be integral with the heat exchanger adjacent to the heat exchanger.
For example, as shown in FIG. 4, the receiver tank 25 described in JP-A-2-267478 is formed in a cylindrical shape, and a concave portion 25a is formed on one side surface of the receiver tank 25, and the concave portion 25a is formed in the concave portion. Passage hole 25 for heat exchange medium
b is provided. Below the header pipe 24, a passage hole 24a for the heat exchange medium is formed. The receiver tank 25 is arranged and fixed on the uneven plane of the header pipe 24 and brazed, and is configured so as to be integrated with a part of the header pipe as a part of the receiver tank. The arrow in the figure indicates the direction in which the heat exchange medium flows.

[0005] Further, as shown in FIG.
6, a partition plate 27 is provided inside the outer wall 2 of the header pipe.
6a is deformed so that the partition plate 2 is formed at the center of the header pipe 26.
7, and a cylindrical receiver tank 28 provided with a passage hole 28a for the heat exchange medium is joined to the unbalanced plane of the header pipe 26 and joined, and a part of the header pipe is used as a part of the liquid receiver. It is configured to be integrated with the heat exchanger. The arrow in the figure indicates the direction in which the heat exchange medium flows.

[0006] As shown in FIG.
No. 0392, the receiver tank 31,
Inverted arc-shaped recess 3 according to the shape of header pipe 29
1a, a rectangular step 32 is formed above the inverted arc-shaped recess 31a, and a square annular step 33 is formed below the inverted arc-shaped recess 31a. Further, a second through hole 34 through which the heat exchange medium flows is formed at the center of the angular annular stepped portion 33 in accordance with the first through hole 30 formed in the header pipe 29. The receiver tank 31 is brazed by the square step 32 formed in the inverted arc-shaped recess 31a and the square annular step 33 being in surface contact with the header pipe 29 and brazing. It is configured to be integrated.

Further, there is also known a configuration in which a header pipe and a receiver tank are connected by a bracket, and a heat exchange medium flows through a pipe provided between the header pipe and the receiver tank.

[0008]

SUMMARY OF THE INVENTION The above-mentioned JP-A-2-267
The invention described in Japanese Patent No. 478 discloses that the heat exchanger and the receiver tank are integrally formed by using a part of the header pipe as a part of the receiver tank as described above. However, there is a problem that the method is complicated and difficult to manufacture, and the versatility is poor.

The invention described in Japanese Patent Application Laid-Open No. 7-280392 discloses an inverted arc-shaped recess formed in the receiver tank in accordance with the shape of the header pipe so that the receiver tank and the header pipe are brought into surface contact and in close contact with each other. And the like, which makes it difficult to manufacture the receiver tank.

Further, the receiver tanks described in JP-A-2-267478 and JP-A-7-280392 are configured to be in close contact with the header pipe, so that the heat of the heat exchanger is easily transmitted directly to the receiver tank. ,
There is a possibility that a part of the heat exchange medium which has been separated into a single liquid phase by gas-liquid separation may be gasified again in the container. In addition, if the header pipe and the receiver tank are connected by a bracket and the heat exchange medium flows through the pipe provided between the header pipe and the receiver tank, the heat of the heat exchanger is less likely to be transmitted to the receiver tank. However, a pipe for flowing the heat exchange medium must be provided as a separate member, and the number of parts increases, and there is a problem that the production becomes complicated.

[0011] In view of the above problems, the present invention is to easily connect a heat exchanger and a receiver tank with a simple structure without requiring a complicated structure of a header pipe and a complicated structure of a receiver tank. And a bracket structure for the heat exchanger.

[0012]

According to the first aspect of the present invention, there is provided a bracket for a heat exchanger in which a header pipe of a heat exchanger is connected to a receiver tank for separating gas-liquid of a heat exchange medium by a bracket. In the structure, the bracket includes a joining surface along the header pipe shape on one side of the bracket body, and a joining surface along the receiver tank shape on the other side of the bracket body, and joins along the header pipe shape. A communication hole is provided in the bracket main body for communicating a surface and a joint surface along the receiver tank, and the header pipe and the receiver tank have a communication hole having a flow opening opening to the communication hole of the bracket main body. It is a bracket structure of the exchanger.

According to a second aspect of the present invention, in the first aspect of the present invention, the communication hole of the bracket main body is provided in the communication hole of the header pipe or the communication hole of the receiver tank. 3 is a bracket structure of a heat exchanger having a configuration in which a burring projecting in a direction is formed.

According to the first aspect of the present invention, a joint surface along the header pipe shape and a joint surface along the receiver tank shape are provided, and further, a communication hole communicating the two joint surfaces is provided. The joint surfaces are fitted to the header pipe and the receiver tank, respectively, and the header pipe and the receiver tank communicate with each other through the communication hole, so that the header pipe and the receiver tank can be easily connected. it can.

When the header pipe and the receiver tank are connected via the bracket, it is not necessary to form the header pipe and the receiver tank into a complicated structure as in the related art, and the manufacturing cost of the header pipe and the receiver tank can be reduced. it can. Further, since the receiver tank does not need to be manufactured according to the shape of the header pipe as in the related art, for example, a flat plate-shaped material can be rolled and formed easily, thereby improving productivity and versatility.

Also, the bracket has a joint surface along the shape of the header pipe and a joint surface along the shape of the receiver tank. The two joint surfaces are fitted to the header pipe and the receiver tank, respectively, and thus require screws and the like. The bracket can communicate with the header pipe and the receiver tank so that the heat exchange medium flows through the communication hole,
There is no need to provide a pipe or the like for flowing the heat exchange medium as in the related art. As a result, the number of parts can be reduced, and the header pipe and the receiver tank can be connected without increasing the space.

Further, when the header pipe and the receiver tank are connected via the bracket, the header pipe and the receiver tank are not in close contact as in the conventional case, so that the heat of the heat exchanger is hardly transmitted to the receiver tank, and the gas-liquid separation is difficult. It is possible to prevent the function from lowering.

According to the second aspect of the present invention, since the burring projecting in the direction of the communication hole of the bracket body is formed in the communication hole of the header pipe or the communication hole of the receiver tank, the burring facilitates the burring. The bracket can be positioned at a position such that the through hole of the header pipe or the receiver tank and the communication hole of the bracket can be assembled without shifting, so that it is not necessary to use a jig or the like for the assembly, and the assembling work is simplified.

As described above, according to the present invention, the header pipe and the receiver tank can be easily assembled using the bracket having a simple structure, and the flow of the header pipe and the receiver tank can be easily realized. it can.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific example of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 show a heat exchanger 1 and a receiver tank 2, FIG. 1 is a front view including a partial cross-sectional view of the heat exchanger 1 and the receiver tank 2, and FIG. FIG. 2 is a plan view of the container 1 and the receiver tank 2.

As shown in FIGS. 1 and 2, the heat exchanger 1 and the receiver tank 2 are connected by a bracket 3 described later.

As shown in FIG. 1, in this heat exchanger 1, a plurality of flat tubes 4 and corrugated fins 5 are alternately laminated.
Both ends of the laminated flat tubes 4 are inserted into and connected to the tube insertion holes 8 of the header pipes 6, 7, respectively. Side plates 9 having a U-shaped cross section are disposed on the upper and lower ends of the stacked flat tubes 4. The openings at the upper and lower ends of the header pipes 6 and 7 are closed by caps 10. In addition, a partition plate 11 is provided at required positions of the header pipes 6 and 7, and an inlet joint 12 and an outlet joint 13 are provided on the header pipe 6 not connected to the receiver tank 2. The header pipe 7 connected to the receiver tank 2 has an upper through hole 14 through which the heat exchange medium flows.
Further, a lower communication hole not shown is formed.

As shown in FIG. 1, the receiver tank 2 is formed in a cylindrical shape having substantially the same length as the header pipes 6 and 7, and both ends thereof are closed by lids 15 and 15, respectively. The receiver tank 2 has an upper through hole 16 through which the heat exchange medium flows and a lower through hole (not shown). Inside the receiver tank 2, a filter 17 and a net-shaped drier 18 provided on the top of the filter 17 are arranged, and the drier 18 is controlled by a bottomed spacer 19 inserted from the top of the receiver tank 2. It is held between the filter 17 in a state of being compressed minutely. This filter 17
For example, it is made of metal or ceramic. The dryer 18 is made of, for example, synthetic zeolite or the like.
A material that does not melt even at 00 ° C. is used. Then, a bottom portion 19a of the spacer 19 that contacts the dryer 18
Has a number of small holes formed therein. Further, a storage section 20 for storing the separated and liquefied heat exchange medium is formed below the receiver tank 2.

The heat exchange medium flowing into the heat exchanger 1 from the inlet joint flows between the header pipes 6 and 7 in a meandering manner a plurality of times, is heat-exchanged with the external air by the fins, and partially contains a gaseous substance. Becomes a liquid medium. Thereafter, the heat exchange medium in the gas-liquid two-phase state flows out of the upper communication hole 14 formed in the header pipe 7 and flows through the communication hole of the bracket 3 described later to be formed in the receiver tank 2. The heat exchange medium which flows into the receiver tank 2 from the upper communication hole 16, passes through the dryer 18 and the filter 17, is separated into gas and liquid by a single-phase liquid, and is stored in the storage unit 20. After that, the heat exchange medium flows out of the lower through-hole formed in the receiver tank 2 and the
Flows into the heat exchanger 1 again through the lower communication hole formed in the header pipe 7, and after flowing through the heat exchanger 1, from the outlet joint 13 provided in the header pipe 6. It flows out and is sent to an expansion valve (not shown) to circulate through a cooling cycle.

FIG. 3 is a perspective view showing a part of the heat exchanger 1, a bracket 3, and a part of the receiver tank 2.

As shown in FIG. 3, the bracket 3 includes a bracket body 20 having a concave joint surface 21 conforming to the shape of the header pipe 7 and a concave joint surface 22 conforming to the shape of the receiver tank 2. I have. And the joining surface 2
A communication hole 23 that communicates the first surface 1 with the joint surface 22 is formed. The communication hole 23 is formed so as to fit with the upper communication hole 14 formed in the header pipe 7 and the upper communication hole 16 formed in the receiver tank 2. Also,
The communication hole 23 is formed so as to fit into a lower communication hole (not shown) formed in the header pipe 7 and a lower communication hole (not shown) formed in the receiver tank 2.

Upper communication hole 1 formed in header pipe 7
4 has a burring 14a protruding outside the header pipe.
Are formed. The burring 14 a is formed by forming a through hole 14 in the header pipe 7 and then using a jig having a sphere having a diameter slightly larger than the diameter of the through hole 14 from the through hole 14. The jig can be easily formed by pulling out the jig from 14. Burring is also formed in the lower through hole formed in the header pipe 7 (not shown) by the same method as described above.

The bracket 3 is securely positioned by fitting the communication hole 23 of the bracket 3 into a burring 14a formed in the upper communication hole 14 of the header pipe 7, and the recess 3 conforms to the shape of the header pipe 7. By fitting the joint surface 21 having a shape to the header pipe 7, the header pipe 7 can be easily assembled to the header pipe 7.

Similarly, the burring 16a is formed in the upper communication hole 16 formed in the receiver dryer 2 in the same manner as described above. Burring is also formed in the lower through hole formed in the receiver tank 2 (not shown) in the same manner as described above.

The bracket 3 is mounted on the receiver tank 2
The positioning is ensured by fitting the communication hole 23 of the bracket 3 to the burring 16 a formed in the upper communication hole 16, and the concave joining surface 22 along the shape of the receiver tank 2 is attached to the receiver tank 2. By fitting, it can be easily assembled to the receiver tank 2. Then, the header pipe 7 and the receiver tank 2 can be connected by brazing the bracket fitted to the header pipe 7 and the receiver tank 2.

As described above, the bracket 3 is securely positioned by the burring formed in the upper and lower communication holes of the header pipe 7 and the receiver tank 2, and the joining surface 21 along the header pipe shape and the joining along the receiver tank shape. By fitting the surface 22 to the header pipe 7 and the receiver tank 2, respectively, the surface 22 can be easily assembled to the header pipe 7 and the receiver tank 2, and the header pipe 7 and the receiver tank 2 can be connected. The heat exchange medium can be communicated with the header pipe 7 and the receiver tank 2 by the formed communication hole 23.

For this reason, the receiver tank 2 can be connected to the heat exchanger 1 without forming a complicated structure unlike the related art, and the manufacturing cost can be reduced.
Further, as described above, since the receiver tank 2 does not need to be formed in a complicated structure according to the shape of the header pipe 7 as in the related art, the productivity and versatility of the receiver tank are improved. The receiver tank 2 can be formed, for example, by rolling a flat brazing sheet or the like into a circular tube, and since the internal structure is not complicated, it is possible to easily replace a dryer and a filter installed inside.

In this embodiment, burring is formed in both the through hole of the header pipe and the through hole of the receiver tank. However, if necessary, for example, burring may be formed in only one of the through holes.

[0035]

According to the first aspect of the present invention, in a bracket structure of a heat exchanger, a receiver tank for performing gas-liquid separation of a heat exchange medium is connected to a header pipe of the heat exchanger with a bracket. The bracket includes a joining surface along the header pipe shape on one side of the bracket body, and a joining surface along the receiver tank shape on the other side of the bracket body, and a joining surface along the header pipe shape and the receiver. A communication hole communicating with a joint surface along a tank is provided in the bracket main body, and the header pipe and the receiver tank are provided with a communication hole opening to the communication hole of the bracket main body. Structure.

As described above, the joining surface along the shape of the header pipe and the joining surface along the shape of the receiver tank are provided.
A communication hole communicating the two joining surfaces is provided,
The header pipe and the receiver tank are easily connected by fitting the two joining surfaces to the header pipe and the receiver tank, respectively, and connecting the through hole of the header pipe with the through hole of the receiver tank by the communication hole. can do.

When the header pipe and the receiver tank are connected via the bracket, it is not necessary to form the header pipe and the receiver tank into a complicated structure as in the related art, and the manufacturing cost of the header pipe and the receiver tank can be reduced. it can. Further, since the receiver tank does not need to be manufactured according to the shape of the header pipe as in the related art, for example, a flat plate-shaped material can be rolled and formed easily, thereby improving productivity and versatility.

The bracket has a joint surface along the shape of the header pipe and a joint surface along the shape of the receiver tank. The two joint surfaces are fitted to the header pipe and the receiver tank, respectively. The bracket can communicate with the header pipe and the receiver tank so that the heat exchange medium flows through the communication hole,
There is no need to provide a pipe or the like for flowing the heat exchange medium as in the related art. As a result, the number of parts can be reduced, and the header pipe and the receiver tank can be connected without increasing the space.

When the header pipe and the receiver tank are connected via the bracket, the header pipe and the receiver tank are not in close contact as in the conventional case, so that the heat of the heat exchanger is less likely to be transmitted to the receiver tank, and the gas-liquid separation is difficult. It is possible to prevent the function from lowering.

According to a second aspect of the present invention, in the first aspect of the present invention, the communication hole of the bracket body is provided in the communication hole of the header pipe or the communication hole of the receiver tank. 3 is a bracket structure of a heat exchanger having a configuration in which a burring projecting in a direction is formed.

As described above, since the burring projecting in the direction of the communication hole of the bracket body is formed in the communication hole of the header pipe or the communication hole of the receiver tank, the bracket is easily positioned by the burring. Then, since the through-hole of the header pipe or the receiver tank and the through-hole of the bracket can be assembled without displacement, it is not necessary to use a jig or the like for the assembling, and the assembling work is facilitated.

According to the present invention, the header pipe and the receiver tank can be easily assembled using a bracket having a simple structure, and the flow of the header pipe and the receiver tank can be easily realized.

[Brief description of the drawings]

FIG. 1 is a front view including a partial cross-sectional view showing a heat exchanger and a receiver tank connected by a bracket according to an embodiment of the present invention.

FIG. 2 is a plan view showing a heat exchanger and a receiver tank connected by a bracket according to an embodiment of the present invention.

FIG. 3 is a perspective view showing a part of a heat exchanger and a part of a bracket and a receiver tank according to a specific example of the present invention.

FIG. 4 is a sectional view showing a heat exchanger and a receiver tank according to a conventional example.

FIG. 5 is a front view including a partial cross-sectional view showing a heat exchanger and a receiver tank according to a conventional example.

FIG. 6 is a perspective view showing a heat exchanger and a receiver tank according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Receiver tank 3 Bracket 4 Tube 5 Fin 6 Header pipe 7 Header pipe 8 Tube insertion hole 9 Side plate 10 Cap 11 Partition plate 12 Inlet joint 13 Outlet joint 14 Flow hole 14a Burring 15 Cover 16 Flow hole 16a Burring 17 Filter 18 Dryer 19 Spacer 19a Bottom 20 Reservoir 21 Joining surface 22 Joining surface 23 Communication hole 24 Header pipe 24a Passage hole 25 Receiver tank 25a Concave 25b Passage hole 26 Header pipe 26a Outer wall 27 Partition plate 28 Receiver tank 28 29 Header pipe 30 Through hole 31 Receiver tank 31a Depressed part 32 Step part 33 Step part 34 Through hole

Claims (2)

[Claims] 1. A bracket structure of a heat exchanger in which a receiver tank for performing gas-liquid separation of a heat exchange medium is connected to a header pipe of the heat exchanger by a bracket, wherein the bracket is provided on one side of a bracket main body. A joint surface along the shape is provided, and the other side of the bracket body is provided with a joint surface along the receiver tank shape, and a communication hole communicating the joint surface along the header pipe shape and the joint surface along the receiver tank is provided. The bracket structure of a heat exchanger, wherein the header pipe and the receiver tank are provided with a through hole that opens to the communication hole of the bracket body. 2. A burring projecting in a direction of the communication hole of the bracket body is formed in the communication hole of the header pipe or the communication hole of the receiver tank. Item 2. A bracket structure for a heat exchanger according to Item 1.