CN101595360B - Heat exchanger - Google Patents
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- CN101595360B CN101595360B CN200880003191XA CN200880003191A CN101595360B CN 101595360 B CN101595360 B CN 101595360B CN 200880003191X A CN200880003191X A CN 200880003191XA CN 200880003191 A CN200880003191 A CN 200880003191A CN 101595360 B CN101595360 B CN 101595360B
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Abstract
The invention discloses a heat exchanger having a flat tube (10) made of a metal plate (10) which has two rims (21, 22). The two rims are overlapped at a curved portion (13) at one end of a cross-section, wherein the flat tube includes: an inner rim (21) arranged inside of the two rims (21, 22); an outer rim (22) arranged outside of the inner rim; a large curvature region formed on the inner rim (21); a small curvature region (102) formed on the inner rim (21) and having smaller curvature than the large curvature region; and an end face (22a) formed on the outer rim (22) and arranged on the small curvature region (102).
Description
The cross reference of related application
Japanese patent application 2007-264769 number that the application on October 10th, 2007-181965 number 1 filed an application based on the Japanese patent application of filing an application on July 11st, 2007 and the Japanese patent application of filing an application on February 28th, 2008 2008-48444 number, it is for reference that the content of these applications is incorporated this paper in this integral body.
Technical field
The present invention relates to a kind of heat exchanger with flat tube.
Background technology
A kind of traditional flat tube that is used for heat exchanger is disclosed among the JP2004-293988A.The mode in the outside of two the wide lateral edges of described flat tube by being connected second member with two wide lateral edges with first member is made first member and the compacting of second components layer and is formed.First member and second member form by making metallic plate be deformed into narrow groove shape manufacturing.The flat tube of making has outer surface, and it is poor that the end face of the wide lateral edges by exposing first member on described outer surface forms ladder.On the wide lateral edges of first member, outwards the expansion of the thickness of expansion board is formed that to fill up this ladder poor.Therefore, flat tube only has the level and smooth outline that does not form the ladder difference on the outer surface on two longitudinal ends.
When making heat exchanger, the longitudinal end of flat tube is inserted into and is formed on inserting in the hole and being attached on the described collector by hard solder on the collector.Two longitudinal ends of flat tube can insert in a pair of collector.Before hard solder, can longitudinal end that pipe inserts in the hole with being inserted in, flat tube open so that improve contact condition between flat tube and the collector.
Summary of the invention
In above-mentioned flat tube, after longitudinal end opened, the end of first member and the gap of opening between the part increased, and therefore may cause may producing because the hard solder quality between flat tube and the collector reduces the problem of the seepage defect of heat exchanger.
On the other hand, in the manufacture process of flat tube, the position that the two ends of the variation of plate width or plate may take place changes.In this case, the lap on the flat tube may move.Therefore, may produce another problem, that is, because the hard solder quality between flat tube and the collector reduces, so the seepage defect of heat exchanger may occur.
The purpose of this invention is to provide a kind of heat exchanger, described heat exchanger has the flat tube that can prevent by the mobile outline variation that causes of lap.
Another object of the present invention provides a kind of heat exchanger that reduces the development of seepage defect.
The present invention realizes above-mentioned purpose by the following technical solutions.
In one embodiment of the invention, provide a kind of heat exchanger.Heat exchanger has the flat tube of being made by metallic plate, and described metallic plate has two edges, and the bend office that described two edges are provided with in cross section at one end is overlapping.Flat tube has two edges, and one in described two edges is arranged on inboard inner edge portion, and another in described two edges is arranged on the outer edge in the inner edge portion outside.Inner edge portion is formed with deep camber district and small curve district, and described small curve district has the curvature less than the curvature in deep camber district.The outer edge is formed with the end face that is arranged in the small curve district.
According to above embodiment,, can reduce the variation of outline if lap moves for a certain reason.Described layout is for the heat exchanger with enlarging processing and not have the heat exchanger of enlarging processing all be favourable.Advantage is the variation that reduces hard solder part and the gap of collector.Therefore, can prevent from partly to locate to occur seepage in hard solder.
In another embodiment of the present invention, can crooked deep camber district and small curve district under the situation of the bending direction that the plate part that does not have change from flat tube begins.Therefore, compare, can provide simple profile for inner edge portion with the complex outline that inner edge portion is bent on different directions.This layout can adopt simple manufacture process.
In another embodiment of the present invention, the small curve district can be a flat surfaces.
In another embodiment of the present invention, the deep camber district can be configured to the end than the more close inner edge portion in small curve district.
In another embodiment of the present invention, the small curve district can be configured to the end than the more close inner edge portion in deep camber district.
In another embodiment of the present invention, heat exchanger has inner edge portion and outer edge, and described inner edge portion and described outer edge are overlapping in the angular range that is equal to or greater than 45 degree.The small curve district is formed at the position that does not surpass center line on the thickness direction of flat tube.The outer edge extends beyond center line.
According to above embodiment,, can reduce the variation of outline if lap moves for some reason.Therefore, can reduce the outer surface of flat tube and the increase in the gap between the patchhole, and prevent the heat exchanger seepage.Described layout can make an edge and another edge slide easily each other, therefore, two edges can be on radially outer direction easy deformation.Therefore, present embodiment is favourable for enlarging processing.
In another embodiment of the present invention, heat exchanger comprises a pair of collector with patchhole, and described patchhole is used for two longitudinal ends of flat tube are inserted in the described patchhole.Flat tube is made by the metallic plate with two edges, and the bend office that described two edges are positioned in cross section on the end is overlapping.Flat tube has pair of plates part and pair of curved part.Flat tube has the open part of opening at the patchhole place.The small curve district tilts with respect to plate part, and has the radius greater than the difference of the thickness of half and outer edge of the thickness of flat tube.
According to above embodiment,, can reduce the variation of outline if lap moves for some reason.Therefore, can reduce the outer surface of flat tube and the increase in the gap between the patchhole, and prevent the heat exchanger seepage.Described layout can make an edge and another edge slide easily each other, therefore, two edges is out of shape on radially outer direction.Therefore, present embodiment is favourable for enlarging processing.
In another embodiment of the present invention, patchhole, can form semicircular in shape corresponding to the opening shape of a part of one in the sweep.Therefore, can improve contacting between flat tube and the collector, this is because in enlarging processing the outer edge is out of shape smoothly along the opening shape of patchhole.
In another embodiment of the present invention, the thickness of outer edge can reduce gradually towards the end face of outer edge.Therefore, can reduce the variation of outline.
In another embodiment, inner edge portion can extend beyond center line on the thickness direction of flat tube.According to described embodiment, when assembling during a plurality of pipe, by promoting two edges and make gap turn narrow between the described edge exerting pressure from the outside on the thickness direction of flat tube.Therefore, can make two edges contact and improve the hard solder quality of flat tube reliably.
In another embodiment of the present invention, the thickness of inner edge portion can reduce gradually towards the end face of inner edge portion.Therefore, because the ladder that can reduce to be formed on the inner surface of flat tube is poor, so can easily carry out enlarging processing.In addition, owing to can increase the interior cross-sectional area of flat tube, therefore can reduce the flow resistance in the flat tube.
In another embodiment of the present invention, the outer surface of the end face of outer edge and inner edge portion can be defined as acute angle towards angle (facing angle).Therefore even can improve hard solder quality between flat tube and the collector according to present embodiment, because the filler weld and the flux material of hard solder material be formed between end face and the outer surface easily.
In another embodiment of the present invention, metallic plate can be made by the composite plate with hard solder material layer, and described hard solder layer of material covers is at least one side.
Description of drawings
Other purpose of the present invention and advantage will present from following DETAILED DESCRIPTION OF THE PREFERRED is clear more easily when in conjunction with the accompanying drawings.Wherein:
Fig. 1 shows that Fig. 1 (a) shows front view according to the total of the radiator of the first embodiment of the present invention, and Fig. 1 (b) shows side view;
Fig. 2 is the part sectioned view of the radiator that intercepts of the line II-II among Fig. 1 along the line (b);
Fig. 3 is the front view of core body sub-assembly;
Fig. 4 is the vertical view of central layer;
Fig. 5 is the front view when flat tube when thickness direction is observed;
Fig. 6 is the sectional view of the tube portion of the flat tube that intercepts of the line VI-VI in Fig. 5;
Fig. 7 is the sectional view of the part of V II among Fig. 6;
Fig. 8 is the sectional view that opens part of the flat tube that intercepts along the line VIII-VIII among Fig. 5;
Fig. 9 is the sectional view of the part IX among Fig. 8;
Figure 10 is the sectional view that opens part of flat tube according to a second embodiment of the present invention;
Figure 11 is the sectional view that opens part of the flat tube of a third embodiment in accordance with the invention;
Figure 12 is the sectional view of the flat tube of a fourth embodiment in accordance with the invention;
Figure 13 is the sectional view of flat tube according to a fifth embodiment of the invention;
Figure 14 is the sectional view of flat tube according to a sixth embodiment of the invention;
Figure 15 is the sectional view of flat tube according to a seventh embodiment of the invention;
Figure 16 is the sectional view according to the flat tube of the eighth embodiment of the present invention;
Figure 17 is the amplification sectional view of the part X VII among Figure 16;
Figure 18 is the amplification sectional view of the modification embodiment of the 8th embodiment;
Figure 19 is the amplification sectional view of the modification embodiment of the 8th embodiment;
Figure 20 is the amplification sectional view of the modification embodiment of the 8th embodiment;
Figure 21 is the amplification sectional view of the modification embodiment of the 8th embodiment; And
Figure 22 is the amplification sectional view of the modification embodiment of the 8th embodiment.
The specific embodiment
First embodiment
Following with reference to Fig. 1-11 explanation first embodiment of the present invention.Fig. 1 (a) is the front view of total of radiator 1 that is shown as the heat exchanger of this embodiment.Fig. 1 (b) is the side view of radiator 1.Fig. 2 is the part sectioned view of the part of the A part that shows that the line II-II in Fig. 1 (b) intercepts.Fig. 3 is the front view of structure that shows the core body sub-assembly of radiator 1.Above-below direction among Fig. 1 (a), Fig. 1 (b), Fig. 2 and Fig. 3 is corresponding to vertical direction.As shown in Fig. 1 (a), Fig. 1 (b), Fig. 2 and Fig. 3, radiator 1 comprises core body sub-assembly 5 and a pair of water tank 52,62.Core body sub-assembly 5 constitutes by linking a plurality of parts of all-in-one-piece by hard solder.For example, described parts are made by aluminium alloy.This is connected on the core body sub-assembly 5 water tank 52,62.For example, water tank is formed from a resin.Water tank 52 is formed with the inlet 53 that is used for introducing from the outside engine coolant.Water tank 62 is formed with and is used to make flow of engine coolant to go out outlet 63 to the outside.
Fig. 4 is the vertical view that shows the structure of central layer 51.As shown in Figure 4, central layer 51 is formed with a plurality of patchholes 54 of the longitudinal end that is used for holding respectively the flat tube 10 that piles up.It can be oval-shaped flat opening basically that patchhole 54 limits.Patchhole 54 has a pair of straight portion and a pair of semi-circular portion that is parallel to each other.In the semi-circular portion each limits the semicircular in shape towards outer projection, and connects the end of straight portion.
Fig. 5 shows the structure of flat tube 10 when seeing on thickness direction.As shown in Figure 5, flat tube 10 has tube portion 17 and opens part 15 and 16.Tube portion 17 forms the cylinder form of the size that has substantial constant in a longitudinal direction.Each of opening in part 15 and 16 is respectively formed on two longitudinal ends of tube portion 17.Each of opening in part 15 and 16 all forms the open funnel shaped towards the edge in a longitudinal direction.After the longitudinal end with flat tube 10 is inserted in the patchhole 54 respectively, open part 15 and 16 by using flaring tool the whole circumference at two ends to be opened form. Open part 15 and 16 by formation, improved the hard solder quality between flat tube 10 and the central layer 51, this be because this can improve the contact condition between the opening of flat tube 10 and patchhole 54 and reduce described flat tube and described opening between the gap.
Fig. 6 is the cross-sectional view that shows by the structure of the tube portion 17 that represent, flat tube 10 of the line VI-VI among Fig. 5 on cross section.As shown in Figure 6, flat tube 10 limits flat and is essentially oval-shaped cross section.Flat tube 10 is made by the single metal plate 20 with hierarchy (for example, three layers).For example, metallic plate 20 is the composite plates with hard solder material layer, sandwich layer and sacrificial material layer, and all these layers are all made by aluminium alloy.Make hard solder material layer, sandwich layer and sacrificial material layer be provided with in proper order according to this by crooked metal sheet 20 on single bending direction and form flat tube 10 from radial outside.
Fig. 7 is the cross-sectional view that shows the structure of the part of being represented by the line VII among Fig. 6.Among Fig. 7, the opening of patchhole 54 is illustrated by the broken lines.As shown in Figure 7, sweep 13 has the overlay region 100 on its at least a portion.Overlay region 100 is made of edge 21 and 22, and in the described edge one is arranged on the inboard as inner edge portion 21, and in the described edge another is arranged on the outside of inner edge portion 21 as outer edge 22.In overlay region 100, the inner surface 22b of outer edge 22 and the outer surface 21b of inner edge portion 21 link by hard solder.
22 inner surface 22b extends beyond center line C1 to inner edge portion 21 along the outer edge.Inner edge portion 21 has the end face 21a that is arranged near the position on the border between plate part 12 and the sweep 13.Inner edge portion 21 has small curve district 102, and described small curve district is connected with plate part 12 with continuous and smooth mode.Small curve district 102 is formed the line C1 but surpass center line C1 of extending to and ply in the centre.Small curve district 102 tilts with respect to plate part 11, and has less relatively curvature.In other words, small curve district 102 has relatively large radius.Inner edge portion 21 also has deep camber district 103, compares with small curve district 102, and described deep camber district is formed more close end face 21a.Deep camber district 103 is formed and extends beyond center line C1.Deep camber district 103 has the curvature greater than the curvature in small curve district 102.In other words, deep camber district 103 has the radius less than the radius in small curve district 102.
The radius in deep camber district 103 is substantially the same with the difference of the thickness t 1 of another edge portion 22 of a half-sum of the thickness d 1 of flat tube 10.The radius in small curve district 102 is configured to the radius greater than deep camber district 103.Small curve district 102 can comprise plate part, and the curvature of described plate part is 0 (zero), and the radius infinity of described plate part.
The end face 22a of outer edge 22 is arranged on the outer surface 21b in small curve district 102.The part of the close end face 22a of end face 22a and outer surface 21b limits right angle roughly.
Here, inner edge portion 21 and outer edge 22 do not have inwardly protruded zone, and this is because flat tube 10 is to form by making metallic plate 20 only be out of shape to make on single bending direction.Therefore, crooked small curve district 102 and deep camber district 103 under the situation of the bending direction that the plate part 11 that does not have change from flat tube 10 begins.
Fig. 8 is the cross-sectional view of the structure of opening part 15 that shows the flat tube 10 of the cross-section of being represented by the line VIII-VIII among Fig. 5.Fig. 9 is the cross-sectional view of the structure of the part represented by the IX among Fig. 8.As shown in Fig. 8 and Fig. 9, compare with the tube portion 17 shown in Fig. 7 with Fig. 6, open part 15 in expansion in the radial direction.Therefore, the shape of cross section that opens part 15 of flat tube 10 is along the warpage of the opening of patchhole 54.In opening part 15, except the gap portion 25 that forms in the position near the end face 22a of outer edge 22, plate part 11 and 12, sweep 13 and sweep 14 are configured to contact firmly with the openend of patchhole 54.
Compare with tube portion 17, overlay region 100 becomes narrower opening part 15 places, and this is because the end face 22a of the end face 21a of inner edge portion 21 and outer edge 22 forms relative to each other close by expansion flat tube 10.In addition, it is narrower that small curve district 102 also becomes, this because of inner edge portion 21, closely be connected part outer edge 22, except that end region 101 and be shaped according to the distortion of the opening shape of outer edge 22 and patchhole 54.
Next, the manufacture process of the radiator 1 in the present embodiment is described.At first, the composite plate that has three-decker by employing is made a plurality of band shape metallic plates 20, and described three-decker has hard solder material layer, sandwich layer and sacrificial material layer.In this process, an end of metallic plate 20 is processed to reduce thickness gradually towards end face.Next, in pipe formation process, make metallic plate 20 distortion forming flat tube 10 by the bending machining on single direction, described flat tube comprises pair of plates part 11 and 12 and pair of curved part 13 and 14.In this process, overlap formation overlay region 100 on the sweep 13 by inner edge portion 21 and the outer edge 22 that makes metallic plate 20.In this process, flat tube 10 also is not formed with and opens part 15 and 16.Therefore, flat tube 10 forms cylindrical, and described cylindrically have in a longitudinal direction along the shape of cross section of the tube portion 17 as shown in Fig. 6 and Fig. 7 of integral body.In other words, the inner edge portion 21 of flat tube 10 has in a longitudinal direction the small curve district 102 along integral body.The end face 22a of outer edge 22 is arranged on the outer surface 21b in small curve district 102.
Then, in the core body assembling process, the assembly of core body part 40 is by alternately piling up a plurality of flat tubes 10 and a plurality of corrugated fin 30 manufactured forming, and described a plurality of flat tubes and described a plurality of corrugated fin form in independent manufacture process.In the core body assembling process, be applied on flat tube 10 and the corrugated fin 30 from the outside with predetermined compressive load along the thickness direction of flattened tube 10.
Then, in the central layer assembling process, the assembly of core body sub-assembly 5 forms by central layer 51 and 61 being assemblied in make on the core body part 40.In the central layer assembling process, two longitudinal ends of flat tube 10 insert a plurality of patchholes 54 that are formed on central layer 51 and 61.As shown in Figure 7, form narrow gap between the edge of opening of the outer surface of flat tube 10 and patchhole 54, this is because flat tube 10 is formed and makes its diameter be slightly less than the diameter of patchhole 54.
Then, in the enlarging process, open part 15 and 16 by using flaring tool that two longitudinal end flare up funnel shapeds of the flat tube 10 that is inserted in the patchhole 54 are formed.As shown in Figure 9, open the opening shape distortion of the shape of cross section distortion of part 15 and 16 according to patchhole 54.Therefore, can improve contact condition between flat tube 10 and central layer 51 and 61.On the other hand, before carrying out the enlarging process, the shape of cross section of the tube portion 17 of flat tube 10 almost remains unchanged during processing.Flaring tool has the shape of cross section of the inner surface that is substantially similar to flat tube 10.In other words, the shape of cross section of flaring tool is roughly ellipse on the whole, and has and be formed on the corresponding recess of end difference at the end face 21a place of inner edge portion 21.
Next, in the hard solder process, the assembly by heating core body sub-assembly 5 also melts the hard solder material layer and makes the mutual hard solder of described parts.In this process, the contact condition between flat tube 10 and central layer 51 and 61 is enhanced owing to opening part 15 and 16, therefore can reduce to produce unsuitable hard solder part.
Then, in the assembling process of the water tank that resin is made, the water tank 52 and 62 that is formed from a resin is assemblied on the core body sub-assembly 5.By carrying out said process, radiator 1 manufactured the forming shown in Fig. 1.
According to present embodiment, the inner edge portion 21 of flat tube 10 has small curve part 102, and before the enlarging process, the end face 22a of outer edge 22 is arranged on the outer surface 21b in small curve district 102.Therefore, even on lap, occur moving for some reason, can prevent that also outline from changing.In addition, slide each other easily in inner edge portion 21 and outer edge 22.Therefore, inner edge portion 21 and outer edge 22 outwards are out of shape.In the enlarging process, the contact condition of improvement can be provided between the edge of opening of the outer periphery surface of flat tube 10 and patchhole 54, and minimum gaps.Therefore, can improve the hard solder quality between flat tube 10 and central layer 51 and 61, and reduce the seepage defect of radiator 1.
In the present embodiment, the thickness of the end region 101 of outer edge 22 reduces gradually towards end face 22a.Can reduce at 102 places, small curve district of inner edge portion 21 with respect to the angle of inclination of plate part 11.Therefore, inner edge portion 21 and outer edge 22 are arranged to easy deformation in the enlarging process.In addition, after the enlarging process, can make the gap portion 25 between the edge of opening that is formed on flat tube 10 and patchhole 54 littler, this is because the thickness at end face 22a place can be done thinlyyer.
In the present embodiment, outer edge 22 extends beyond center line C1, and in described centerline, flat tube 10 has Breadth Maximum.Therefore, in pipe formation process, outer edge 22 is in the snap fit state on inner edge portion 21.Therefore, in the hard solder process,, also can prevent the linking portion breakage between inner edge portion 21 and the outer edge 22 even remove residual stress on another sweep 14 by high temperature.
In the present embodiment, inner edge portion 21 extends beyond center line C1.When in the core body assembling process when the outside of thickness direction is applied to compressive load on the flat tube 10, this layout can make inner edge portion 21 surpass generation power on the direction of the part of center line C1 and the gap turn narrow between the outer edge 22.Therefore.Improved the contact condition between inner edge portion 21 and the outer edge 22, and can improve hard solder quality, and reduced the seepage defect of radiator 1 at sweep 13 places of flat tube 10.
In the present embodiment, each in central layer 51 and 61 the patchhole 54 all has semicircle edge of opening, described edge of opening be positioned at sweep 13 corresponding positions on.Therefore, outer edge 22 is out of shape smoothly along the edge of opening of patchhole 54, and improves the contact condition between the edge of opening of the outer surface of outer edge 22 and patchhole 54.
In the traditional arrangement of known flat tube, the depressed part that has with the inside formation of the corresponding degree of depth of thickness of plate is formed on the inner edge portion at place, overlay region, and is poor with the ladder of the end that reduces to be formed on the outer edge.According to the traditional arrangement of flat tube, make the pipe distortion by the enlarging process on the direction that broadens in the gap that makes ladder difference place.Therefore, the hard solder quality between flat tube and the central layer may reduce.In addition, in this flat tube, owing to be used for the forming process of the complexity of pipe, may have the problem that increases manufacturing cost, this is because need be used for the unexpected and accurate BENDING PROCESS of crooked metal sheet.
Otherwise, according to present embodiment, because form flat tube 10, so flat tube 10 does not have depressed part by crooked metal sheet on single direction 20.Therefore, can prevent the reduction of hard solder quality, this is because expansion very close to each other in the enlarging process.In addition, in the present embodiment, because do not need unexpected and accurate BENDING PROCESS, so can simplify the manufacture process of flat tube 10 and reduce manufacturing cost.
(second embodiment)
Figure 10 shows second embodiment of flat tube 10, and described flat tube has at the schematic structure that opens sweep 13 places on the part 15.Figure 10 shows and the corresponding cross-sectional view of Fig. 9.As shown in Figure 10, the end face 22a of outer edge 22 so that the outer ledge of the end face 22a mode outstanding in a circumferential direction with respect to the inside edge form.This layout will be defined as acute angle towards angle θ between the outer surface 21b of end face 22a and inner edge portion 21, that is, and and θ＜90 degree.In the hard solder process, the filler weld of the hard solder material of fusion and scaling powder are formed between end face 22a and the outer surface 21b easily.Therefore, can improve the hard solder quality between flat tube 10 and central layer 51 and 61, and prevent the seepage defect of radiator 1.
In addition, because form filler weld, so the hard solder material of fusion and scaling powder are because capillary effect enters the linking portion between outer edge 22 and the inner edge portion 21 easily.Therefore, can improve the hard solder quality at sweep 13 places of flat tube 10, and prevent the seepage defect of flat tube 10.
(the 3rd embodiment)
Figure 11 shows the 3rd embodiment of flat tube 10, and described flat tube has at the schematic structure that opens sweep 13 places on the part 15.Figure 11 shows and the corresponding cross-sectional view of Fig. 9.As shown in Figure 11, the end region 104 of inner edge portion 21 is formed its thickness is reduced towards end face 21a.For example, be set equal to or greater than 50% in the thickness t 1 of the location except that end region 104 and near the thickness ratio between the thickness t 3 of the location of end face 21a.Thickness t 3 is less than thickness t 1.Consider the working ability of metallic plate 20, preferably the thickness ratio is configured to greatly between 60% and 70%, and this is because if the thickness ratio is set too for a short time, then is difficult to processing metal plate 20.
According to present embodiment, the ladder difference on the inner surface of the flat tube 10 that is formed by end face 21a is reduced.Can make the recess that is formed on the flaring tool very little, perhaps can remove described recess, and carry out enlarging processing easily.Therefore, can simplify the manufacture process of heat exchanger and reduce manufacturing cost.In addition, can increase the interior cross-sectional area of flat tube 10, that is, and the cross-sectional area of fluid passage, and the flow resistance in the minimizing flat tube 10.
(the 4th embodiment)
With reference to Figure 12, the 4th embodiment is described.The edge 410a of flat tube 410 has deep camber district 481, and described deep camber district has the radius of curvature less than half of the thickness of flat tube 410.Deep camber district 481 can be referred to as first district.Or rather, the radius in deep camber district 481 is half of difference of the thickness of the thickness of flat tube 410 and metallic plate 20.Edge 410a has almost smooth flat region 482.The flat region can be referred to as second district.Deep camber district 481 is formed on the position that does not extend beyond center line C1.Flat region 482 is formed on the end side with respect to deep camber district 481.Flat region 482 is oriented to the more close terminal 410c than deep camber district 481.Extend with half length of the thickness that corresponds essentially to flat tube 410 flat region 482.Edge 410b is arranged on the flat region 482 of edge 410a.Edge 410b can be configured to than flat region 482 more close ends.
According to present embodiment, can make the shape of cross section of flat tube 410 be similar to ellipse.Therefore, can reduce gap between flat tube 410 and the patchhole.In addition, under the situation that the relative position of end face 410c and 410b changes for some reason, can prevent the variation of outline.
(the 5th embodiment)
With reference to Figure 13, the 5th embodiment is described.Deep camber part 581 and small curve part 582 are formed on the edge 510a of flat tube 510.Edge 510a extends beyond sweep and even reaches plate part 11.Edge 510a has the extension area 583 on endways the sidepiece (that is end face 510c).Extension area 583 forms even shape and overlapping with plate part 11.Therefore, can increase the binding area between edge 510a and the 510b, and improve the quality of hard solder.
(the 6th embodiment)
With reference to Figure 14, the 6th embodiment is described.The edge 610a of flat tube 610 has deep camber district 681, and described deep camber district has the radius of curvature less than half of the thickness of flat tube 610.Deep camber district 681 can be referred to as first district.The radius in deep camber district 681 is half of difference of the thickness of the thickness of flat tube 410 and metallic plate 20.Edge 610a has small curve district 682, and described small curve district has than one of the thickness of flat tube 610 medium-sized radius of curvature.Small curve district 682 can be referred to as second district.Deep camber district 681 is formed on the part of close center line C1 of edge 610a.Compare with deep camber district 681, small curve district 682 is formed near on the terminal side (that is end face 10c).Edge 610b is arranged in the small curve district 682 of edge 610a.Compare with small curve district 682, edge 610b can be arranged near a terminal side.In addition, small curve district 684 is formed on a side of close plate part 12 with respect to deep camber district 681.The symmetry of flat tube 100 with respect to center line C1 improved in small curve district 684.
According to present embodiment, also can improve the outline of flat tube 610, and even prevent the variation of outline.
(the 7th embodiment)
With reference to Figure 15, the 7th embodiment is described.Flat tube 710 has edge 710b, and described edge has the thickness that reduces gradually towards the sidepiece of end (that is end face 710d).Therefore, can improve the outline of flat tube 710.
(the 8th embodiment)
With reference to Figure 16 and Figure 17, the 8th embodiment is described.Flat tube 810 is the pipes with interior fin.Flat tube 810 has cylindrical member 820 that shell is provided and the corrugated interior fin 825 that is arranged in the cylindrical member 820.Cylindrical member 820 has and is similar to oval-shaped shape of cross section and the fluid passage is provided within it.Cylindrical member 820 has first plate part 811 and second plate part 812, and described first plate part and described second plate part are arranged on the shorter diametric(al) to face with each other and to be parallel to each other.Cylindrical member 820 has the first semi-circular curvature part 813 and the second semi-circular curvature part 814, and described first semi-circular curvature part and the described second semicircular bent section branch are formed on the longer diametric(al) with to outer lug and be formed roughly semicircle.Interior fin 825 increases the heat-exchange surface area.Interior fin 825 has two ends that closely contact along the inner surface of the first semi-circular curvature part 813 and the second semi-circular curvature part 814.In addition, the remainder of interior fin 825 forms the corrugated shape, and contacts with second plate part 812 with first plate part 811.Cylindrical member 820 and interior fin 825 are formed by continuous list.Cylindrical member 820 is by making two at one end overlapping cylinders that form sealing in edge on longer diametric(al).In this embodiment, the frontier district between cylindrical member 820 and the interior fin 825 provides an edge 821.
The outside overhang of the end of 802 restriction outer edges 822, flat region.In addition.Sheet section 830 also limits the outside overhang of the end of outer edge 822.Owing to error in the manufacture process or similar reason, the position of the end of outer edge may change.For end being remained on the flat region 802, the terminal possible moving range of consideration is set the circumferential width of flat region 802.
With reference to Figure 18-22, the modified example of the 8th embodiment is described.Figure 18-22 shows the modified example of the 8th embodiment.As shown in Figure 18, the inclined plane can be formed on the both sides of the end region of outer edge 822.In this case.Sheet section 830 is provided by the shape of cross section that can be referred to as both sides conical in shape or trapezoidal shape.As shown in Figure 19, sheet section 830 can be provided by triangular cross-sectional shape.Sheet section 830 can be provided by the flexure plane on the end region that is formed on outer edge 822.Figure 20-21 shows the sheet section 830 that is limited by flexure plane.
(other embodiment)
In above embodiment, described example has the end face 22a of outer edge 22, and described end face is at tube portion 17 and open part 15 and 16 places are arranged in the small curve district 102 of inner edge portion 21.Yet the end face 22a of outer edge 22 can be arranged in the deep camber district 103 of inner edge portion 21 opening part 15 and 16 places.
In above embodiment, the present invention is applied to belong to the radiator 1 of the down flow type radiator with the flat tube 10 that extends in vertical direction.Yet the present invention also can be applied to the radiator such as any kind of the horizontal flow ejector half radiator with the flat tube that extends in the horizontal direction.
Claims (13)
1. heat exchanger, described heat exchanger has the flat tube of being made by metallic plate (10) (10), and described metallic plate has two edges (21,22), described two edges are positioned at an end in cross section sweep (13) is located overlapping, and wherein said flat tube comprises:
Inner edge portion (21), described inner edge portion are arranged on the inboard at described two edges (21,22);
Outer edge (22), described outer edge is arranged on the outside of described inner edge portion;
Deep camber district, described deep camber district are formed on the described inner edge portion (21);
Small curve district (102), described small curve district is formed on the described inner edge portion (21), and has the little curvature of curvature than described deep camber district; With
End face (22a), described end face are formed on described outer edge (22) and go up and be arranged in the described small curve district (102).
2. heat exchanger according to claim 1, wherein,
Crooked described deep camber district and described small curve district (102) under the situation of the bending direction that the plate part (11) that does not have change from described flat tube begins.
3. heat exchanger according to claim 1, wherein,
Described small curve district (102) is a flat surfaces.
4. according to each described heat exchanger among the claim 1-3, wherein,
Described deep camber district is configured to the end than the more close described inner edge portion in described small curve district (21).
5. according to each described heat exchanger among the claim 1-3, wherein,
Described small curve district (482) is configured to the end (410c) than the more close described inner edge portion in described deep camber district (481).
6. according to each described heat exchanger among the claim 1-3, wherein,
Described inner edge portion (21) and described outer edge (22) are overlapping in the angular range that is equal to or greater than 45 degree;
Described small curve district (102) is formed at the position that does not surpass center line (C1) on the thickness direction of described flat tube (10); And
Described outer edge (22) extends beyond described center line (C1).
7. heat exchanger according to claim 6 also comprises:
A pair of collector (50,60), described a pair of collector has patchhole (54), and described patchhole is used for two longitudinal ends of described flat tube (10) are inserted in described inserting in the hole, wherein:
Described flat tube (10) is made by metallic plate (10) crooked on single direction, and has pair of plates part (11,12) and pair of curved part (13,14);
Described flat tube (10) have open the part (15,16), described open the part open around described patchhole (54); And
Described small curve district (102) tilts with respect to described plate part (11), and has the radius greater than the difference of the thickness of half and described outer edge (22) of the thickness (dl) of described flat tube (10).
8. heat exchanger according to claim 7, wherein,
Described patchhole (54) has opening shape, described opening shape comprise with described sweep in (a 13) corresponding semi-circular portion.
9. according to each described heat exchanger among the claim 1-3, wherein,
The thickness of described outer edge (22) reduces gradually towards the end face (22a) of described outer edge (22).
10. according to each described heat exchanger among the claim 1-3, wherein,
Described inner edge portion (21) extends beyond center line (C1) on the thickness direction of described flat tube (10).
11. according to each described heat exchanger among the claim 1-3, wherein,
The thickness of described inner edge portion (21) reduces gradually towards the end face (21a) of described inner edge portion (21).
12. according to each described heat exchanger among the claim 1-3, wherein,
The described end face (22a) of described outer edge (22) and the outer surface (21b) of described inner edge portion (21) be defined as acute angle towards angle (θ).
13. according to each described heat exchanger among the claim 1-3, wherein,
Described metallic plate (20) is made by composite plate, and described composite plate has the hard solder material layer that covers at least one side.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007181965A JP4952414B2 (en) | 2007-07-11 | 2007-07-11 | Tube for heat exchanger |
| JP181965/2007 | 2007-07-11 | ||
| JP264769/2007 | 2007-10-10 | ||
| JP2007264769A JP2009008374A (en) | 2007-05-28 | 2007-10-10 | Heat exchanger and its manufacturing method |
| JP048444/2008 | 2008-02-28 | ||
| JP2008048444 | 2008-02-28 | ||
| PCT/JP2008/001850 WO2009008172A1 (en) | 2007-07-11 | 2008-07-10 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101595360A CN101595360A (en) | 2009-12-02 |
| CN101595360B true CN101595360B (en) | 2011-12-28 |
Family
ID=40359596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880003191XA Active CN101595360B (en) | 2007-07-11 | 2008-07-10 | Heat exchanger |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4952414B2 (en) |
| CN (1) | CN101595360B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2960955A1 (en) * | 2010-06-04 | 2011-12-09 | Airbus Operations Sas | PREHEATING DEVICE FOR A FLUID / FLUID HEAT EXCHANGER OF AN AIRCRAFT |
| FR2968224B1 (en) * | 2010-12-07 | 2013-08-23 | Valeo Systemes Thermiques | SET OF TWO PIECES SET ONE ON THE OTHER |
| JP5861549B2 (en) | 2012-04-04 | 2016-02-16 | 株式会社デンソー | Tube and heat exchanger provided with the tube |
| CN106679240A (en) * | 2015-11-11 | 2017-05-17 | 丹佛斯微通道换热器（嘉兴）有限公司 | Heat exchanger and heat exchange pipes |
| FR3054653B1 (en) | 2016-07-29 | 2018-07-27 | Valeo Systemes Thermiques | COLLECTOR PLATE, COLLECTOR BOX AND HEAT EXCHANGER CORRESPONDING |
| JP2018087660A (en) * | 2016-11-29 | 2018-06-07 | 株式会社デンソー | Drawn-cup type heat exchanger |
| CN107504853A (en) * | 2017-09-20 | 2017-12-22 | 泰安鼎鑫冷却器有限公司 | A kind of high-strength combination formula radiating tube |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1188889A (en) * | 1997-01-20 | 1998-07-29 | 株式会社杰克塞尔 | Pipe for heat exchanger |
| US7117936B2 (en) * | 2002-07-09 | 2006-10-10 | Valeo Thermal Systems Japan Corporation | Tube for heat exchanger |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5249859B2 (en) * | 1973-12-11 | 1977-12-20 | ||
| JPS5894A (en) * | 1981-06-25 | 1983-01-05 | Tsuchiya Mfg Co Ltd | Manufacture of flat tube unit for heat exchanger |
| JP2002267380A (en) * | 2001-03-13 | 2002-09-18 | Toyo Radiator Co Ltd | Brazing tube for heat exchanger and method of manufacturing heat exchanger |
| JP4182413B2 (en) * | 2003-03-27 | 2008-11-19 | 株式会社ティラド | Heat exchanger |
| JP2005083700A (en) * | 2003-09-10 | 2005-03-31 | Zexel Valeo Climate Control Corp | Heat exchange tube |
| JP4103762B2 (en) * | 2003-10-16 | 2008-06-18 | 株式会社デンソー | Brazed flat tube |
| JP4059186B2 (en) * | 2003-10-16 | 2008-03-12 | 株式会社デンソー | Brazed flat tube |
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2007
- 2007-07-11 JP JP2007181965A patent/JP4952414B2/en not_active Expired - Fee Related
-
2008
- 2008-07-10 CN CN200880003191XA patent/CN101595360B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1188889A (en) * | 1997-01-20 | 1998-07-29 | 株式会社杰克塞尔 | Pipe for heat exchanger |
| US7117936B2 (en) * | 2002-07-09 | 2006-10-10 | Valeo Thermal Systems Japan Corporation | Tube for heat exchanger |
Non-Patent Citations (5)
| Title |
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| JP特開2001-137989A 2001.05.22 |
| JP特開2002-267380A 2002.09.18 |
| JP特開2004-293988A 2004.10.21 |
| JP特開2005-121295A 2005.05.12 |
| JP特開平10-213385A 1998.08.11 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101595360A (en) | 2009-12-02 |
| JP2009019799A (en) | 2009-01-29 |
| JP4952414B2 (en) | 2012-06-13 |
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Inventor after: Ninagawa Toshihide Inventor after: Ozaki Tatsuo Inventor after: Ohara Takaei Inventor after: Miyazaki Noriyuki Inventor after: Saitou Mitsuyoshi Inventor after: Wang Yu Inventor after: Yoshida Norio Inventor after: Sakakibara Tetsuya Inventor after: Mitsukawa Kazuhiro Inventor before: Ninagawa Toshihide Inventor before: Ozaki Tatsuo Inventor before: Ohara Takaei |
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Free format text: CORRECT: INVENTOR; FROM: NINAGAWA TOSHIHIDE OZAKI TATSUO OHARA TAKAHIDE TO: NINAGAWA TOSHIHIDE OZAKI TATSUO OHARA TAKAHIDE MIYASAKI NORIYUKI SAITO CHONGKE WANG YU YOSHIDA SUZUHITO YUAN ZHEZAI HIKARIKAWA KAZUHIRO |
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