CN101782300A - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- CN101782300A CN101782300A CN200910008711A CN200910008711A CN101782300A CN 101782300 A CN101782300 A CN 101782300A CN 200910008711 A CN200910008711 A CN 200910008711A CN 200910008711 A CN200910008711 A CN 200910008711A CN 101782300 A CN101782300 A CN 101782300A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- flat tube
- curvature
- header
- fin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005452 bending Methods 0.000 claims abstract description 32
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 238000007599 discharging Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a heat exchanger, which comprises two collecting tubes with a certain distance and a plurality of flat tubes. Fins are arranged among the flat tubes. Wave crest parts or wave trough parts of the fins are connected with the flat tubes or side plates. The flat tubes, the side plates and the fins are bent at the approximately middle positions of the lengths thereof to form a bending part to make the whole heat exchanger take a reversed V shape. The flat tubes, the side plates and the fins between the bending part and the two collecting tubes are bent in a curve mode to form a curve side part. The curvature radius of the side part at the end close to the collecting tubes is more than that at the end close to the bending part. By further improving the reversed V-shaped heat exchanger, the flat tubes, the side plates and the fins between the bending part and the two collecting tubes of the heat exchanger are bent in a curve mode to make the whole heat exchanger of a parabolic shape. In the structure, from the bending part positioned on the top of the parabola to the collecting tubes on the both sides, the bending curvature radius of the flat tubes, the fins are increased gradually so as to be more beneficial for discharging the condensate water.
Description
Technical field
The present invention relates to technical field of heat exchange, particularly a kind of heat converter structure that is used for air-conditioning duct as the evaporimeter use.
Background technology
Heat exchanger is an equipment of realizing that heat transmits between cold and hot fluid, is widely used in fields such as HVAC.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of typical heat exchanger in the prior art.
Fig. 1 is the structural representation of a kind of typical heat exchanger in the prior art.Heat exchanger 1 comprises first header 11, second header 12 that is parallel to each other, and both can be provided with usually abreast, and have the many flat tubes that be arranged in parallel substantially 13 between the two; The cross section of flat tube 13 mostly is flat, and usually the passage of flat tube 13 is separated into several, and described passage is also referred to as the microchannel.Respectively be provided with a plurality of flat tube interface (not shown)s on first header 11 and second header, the 12 corresponding tube walls, the two ends of flat tube 13 are gone in described first header 11 and second header 12 by described flat tube interface plug-in mounting respectively, thereby both are communicated with.
In order to realize heat exchange as far as possible fully, can in first header 11 and/or second header 12, some lateral partitions (not shown)s be set, thereby the heat transferring medium circulation passage in the heat exchanger 1 can be made as the snakelike of bending; Therefore described heat transferring medium flows into first header 11 from feed tube 17, and in each bar flat tube 13 lateral flow, finally outflow heat exchanger 1 from discharging tube 18.Illustrated feed tube 17 and discharging tube 18 are arranged on the aspect, the same side of first header 11, and also can be separately positioned on first header 11 and second header 12 when using usually.
Flow out through the opposite side (air draft side) of said external air automatic heat-exchanger 1 after the heat exchange on the flow through surface of above-mentioned flat tube 13 and fin 14 of one side (inlet side) of extraneous air automatic heat-exchanger 1.
In the actual use of heat exchanger, when especially heat exchanger used as evaporimeter, with header 11 horizontal positioned of heat exchanger, obviously, outlet header 12 was the level of state too usually.The condensed water that this modes of emplacement can make in the heat exchanging process to be produced can flow down along flat tube or along the fin of undulate, thereby it is inner and influence the effect of heat exchange to avoid condensed water to be deposited in heat-exchanger fin.
And when the header horizontal positioned, at different application scenarios or be used in different air-conditioning types, heat exchanger can also be carried out bending, make it be " ∧ " shape or approximate " ∧ " shape is placed.As shown in Figure 2, Fig. 2 is the schematic diagram that is the whole positive apparent direction of heat exchanger of " ∧ " shape.In this structure, heat exchanger carries out bending in the middle part, form one section curved bending part 17 and two the roughly symmetrical 18a of limit portion, 18b, two limit portion integral body are plane (linearly from the view direction of Fig. 2), the inboard of two 18a of limit portion, 18b is the inlet side, and the outside is the air draft side.
At this moment, high temperature air is from the below, and promptly the inboard (inlet side) of the 18a of limit portion, 18b enters, the surface of the flat tube (not shown) of flowing through and fin (not shown), after carrying out heat exchange with the cold-producing medium of flat tube inside, discharge from the outside (air draft side) of two 18a of limit portion, 18b.
The condensed water that produces in the middle of the process of heat exchange under the effect of wind-force, is blown to the edge of fin, and the outer rim by flat tube flows into the water pond 19 that places the heat exchanger below then.The face velocity of heat-exchanger surface is increasing from top to bottom, and promptly the closer to bending part 17, the face velocity of heat exchanger is big more, and the closer to the header place, the face velocity of heat exchanger is more little.In general, surface wind speed is big more helps draining more.And in the prior art, because it is two 18a of limit portion, 18b integral body are plane,, more and more littler to the condensed water of fin edges by wind along direction from bending part 17 to header.
Summary of the invention
The object of the present invention is to provide a kind ofly to be more prone to discharge the heat exchanger of the condensed water that produces in the heat exchanging process, can make heat exchange reach a relatively more balanced drainage effect than prior art.
For this reason, the present invention is by the following technical solutions:
A kind of heat exchanger comprises two headers that keep at a certain distance away, and connects some flat tubes of described two headers, and described flat tube comprises several cold-producing medium microchannels, and described two headers are communicated with; Be provided with fin between the described flat tube, the crest portion of fin or trough portion are connected with flat tube or side plate, and described flat tube, side plate and fin form kink in the bending of the roughly middle part of its length, make heat exchanger integral body be " ∧ " shape; It is characterized in that the curved bending of flat tube, side plate and fin between described kink and described two headers forms forniciform limit portion.
Preferably, described limit portion near the radius of curvature of header one end greater than radius of curvature near kink one end.
Preferably, described limit portion is along the header direction from the kink to two ends, and slope of its bending curved surface increases gradually.
Preferably, described flat tube, side plate bend with identical radius of curvature with fin.
Alternatively, described two limit portions bending curvature is inequality, and the limit portion radius of curvature of close inlet header one side is greater than the limit portion near outlet header one side.
Preferably, described radius of curvature near header one end is 300mm, and the radius of curvature of close kink one end is 400mm.
Preferably, described kink and limit portion form by the flat tube and the fin outside being stretched, its inboard being compressed.
Preferably, described kink and limit portion are by the bender bending and molding.
Preferably, the material of described heat exchanger is an aluminum or aluminum alloy.
The invention has the beneficial effects as follows:
By further improvement to " ∧ " shape heat exchanger, make the kink of heat exchanger and flat tube and the curved bending of fin between two headers, make heat exchanger integral body be parabola shaped substantially, in this structure, header from the kink that is positioned at the parabola top to both sides, the slope of the bending curved surface of flat tube wherein, side plate and fin reduces gradually, make in the high smaller radius of curvature of place collocation of wind speed, help the even discharging of condensed water in the low place bigger radius of curvature of collocation of wind speed more.
Description of drawings
Fig. 1 is the structural representation of a kind of typical heat exchanger in the prior art;
Fig. 2 is the schematic diagram of prior art " ∧ " type heat exchanger;
Fig. 3 is the schematic diagram of the heat exchanger of first embodiment of the invention;
Fig. 4 is the schematic diagram of the heat exchanger of second embodiment of the invention.
The specific embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.For technical scheme difference with the prior art of the present invention is described more intuitively,, adopt same numbering to represent for the parts that play same function among the present invention with prior art.
Please refer to Fig. 3, Fig. 3 is the schematic diagram of the heat exchanger of first embodiment of the invention.
Heat exchanger 100 comprises first header 11, second header 12 that is parallel to each other, and both are provided with abreast, and in the present embodiment, heat exchanger 100 uses as evaporimeter, and first header 11 and second header 12 all are positioned at the bottom.Have many flat tubes 13 (not shown)s between the two; The cross section of flat tube 13 mostly is flat, and usually the passage of flat tube 13 is separated into several, and described passage is also referred to as the microchannel.Respectively be provided with a plurality of flat tube interface (not shown)s on first header 11 and second header, the 12 corresponding tube walls, the two ends of flat tube 13 are gone in described first header 11 and second header 12 by described flat tube interface plug-in mounting respectively, thereby both are communicated with.
Between adjacent per two flat tubes 13, be provided with radiating fin, it is wavy that fin is substantially, and the width of fin is set to flat tube 13 roughly the same, perhaps is slightly larger than the width of flat tube.The crest portion of fin and trough portion conflict on the surface of flat tube, fix by soldering.For the ease of welding, can side plate 15 be set at fin place usually near the header two ends.The width of side plate 15 and flat tube 13 are roughly the same, and fixedly connected with the crest portion or the trough portion of fin.
In the present embodiment, flat tube 13, fin 14, side plate 15 all by bending, make heat exchanger 100 integral body be parabolic shape from angle shown in Figure 3.Heat exchanger 100 has a kink 17 that roughly is positioned at the middle part ' and be positioned at both sides and the roughly symmetrically arranged limit 18c of portion, 18d.Kink 17 ' be circular-arc substantially, can carry out bending simultaneously to side plate 15, fin 14, flat tube 13 by bender, in the process of bending, to flat tube 13, fin 14, side plate 15 along separately width, to wherein stretching on one side, another side is compressed, makes flat tube 13, fin 14 and side plate 15 become approximate fan annular by original rectangle at length direction, thus make heat exchanger 100 form on the whole kink 17 '.Heat exchanger 100 adopts aluminium or aluminium alloy to make usually, therefore can bend with bigger radius of curvature.
The 18c of limit portion, 18d be curved shape substantially, and at the view direction of Fig. 3, from top to bottom, its radius of curvature increases gradually, and 18c of limit portion and 18d also can bend by bender, in close kink 17 ' section, bend with less radius of curvature, radius of curvature is set to 300mm and is advisable.Near the afflux pipeline section, bend with bigger radius of curvature, radius of curvature is set to 400mm and is advisable.18c of limit portion and 18d bend with roughly the same radius of curvature, make both symmetrical substantially on kink 17 ' both sides, and make the integral body of heat exchanger present parabolic shape in direction shown in Figure 3.
Therefore, the 18c of limit portion, 18d are along the header direction from the kink to two ends, and slope of its bending curved surface reduces gradually.
Below in conjunction with Fig. 4 second embodiment of the present invention is described, present embodiment is the further improvement to first embodiment.
In embodiment, heat exchanger 100 has bending 17 ' and two 18e of limit portion, 18f.Be that with the difference of first embodiment bending radius of curvature of two 18e of limit portion, 18f is inequality.In the side near inlet header 11, the radius of curvature of its limit portion is greater than the limit portion near a side that exports header 12, and promptly the 18e of limit portion curved surface tangent slope is less than the curved surface tangent slope of the 18f of limit portion.The reason of She Zhiing is like this, and cold-producing medium through flat tube, flows out from outlet header 12 after entering inlet header 11 again, in this process, is carrying out heat exchange with air always, and the temperature of cold-producing medium is a process that raises gradually.At inlet side, ratio liquid in the cold-producing medium is higher, latent heat is bigger, at outlet side, the ratio of gaseous state is higher in the cold-producing medium, therefore, in the refrigerant inlet side less radius of curvature is set, in the bigger radius of curvature of refrigerant outlet side setting, can make the air quantity of the air quantity of inlet side greater than outlet side, can obtain reasonable heat exchange effect.
The present embodiment remainder is identical with first embodiment, gives unnecessary details no longer one by one at this.
It is to be noted, in above specific descriptions to embodiment, described kink 17 ' and two 18c of limit portion, 18d are the present invention for convenience of explanation, and at heat exchanger 100 generally speaking, in fact, the width of side plate 15, fin 14, flat tube 13 is roughly the same or approaching, and on same cross section, the three all has described kink 17 ' and the 18c of limit portion, 18d.
When heat exchanger 100 is in the evaporation operating mode, the high temperature air (generally being equivalent to about indoor temperature 28 degree) that contains steam enters (i.e. direction shown in the figure hollow core arrow) up from the zone (inlet side) between the inboard of the 18c of limit portion, 18d shown in Figure 3, pass the surface of flat tube and fin, carry out discharging from the outside (air draft side) of the 18c of limit portion, 18d after the heat exchange with cold-producing medium in the flat tube microchannel.Heat exchange is a lasting process, and the high temperature air that contains steam is in the middle of the process of carrying out heat exchange, and temperature reduces gradually, becomes the air of relative low temperature after the air draft side is discharged; In the middle of this process, when the surface temperature of heat exchanger was lower than the condensation temperature of the air that is in contact with it, airborne part steam can condense into water, and the condensed water of separating out is deposited in the surface of fin and radiating tube.
The arterial drainage mechanism of heat exchanger 100 is: the condensed water of wind blows fin surface arrives the outside of the limit 18c of portion, 18d, in the outer rim inflow water pond 19 of flat tube.For the heat-exchanger surface of a certain part, the wind speed on surface is big more, helps more condensed water is discharged.Since near kink 17 ' the place, the bending radius of curvature of fin and flat tube, side plate is less, so windage is less; Otherwise, bigger near a lateral buckling radius of curvature of header, so windage is bigger.Like this, the face velocity that just makes heat-exchanger surface becomes greatly gradually along the direction of air intake, promptly the closer to kink 17 ', wind speed is big more; The closer to header, wind speed is more little.For present embodiment,,, make the whole drainage effect of heat exchanger 100 be tending towards a uniform state in the low bigger radius of curvature of place collocation of wind speed in the high smaller radius of curvature of place collocation of wind speed.
In order to realize heat exchange as far as possible fully, above embodiment can also equally with prior art be provided with some lateral partitions in first header 11 and/or second header 12, thereby the heat transferring medium circulation passage in the heat exchanger 1 can be made as the snakelike of bending, and be arranged on feed tube and drain pipe on the same header or be separately positioned on the different headers or the like the technological means that those skilled in the art use always.
More than heat exchanger provided by the present invention is described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification, also fall in the protection domain of claim of the present invention such as these improvement and modification to the present invention.
Claims (9)
1. a heat exchanger comprises two headers that keep at a certain distance away, and connects some flat tubes of described two headers, and described flat tube comprises several cold-producing medium microchannels, and described two headers are communicated with; Be provided with fin between the described flat tube, the crest portion of fin or trough portion are connected with flat tube or side plate, and described flat tube, side plate and fin form kink in the bending of the roughly middle part of its length, make heat exchanger integral body be " ∧ " shape; It is characterized in that the curved bending of flat tube, side plate and fin between described kink and described two headers forms forniciform limit portion.
2. heat exchanger as claimed in claim 1 is characterized in that, described limit portion near the radius of curvature of header one end greater than radius of curvature near kink one end.
3. heat exchanger as claimed in claim 1 is characterized in that, described limit portion is along the header direction from the kink to two ends, and slope of its bending curved surface increases gradually.
4. heat exchanger as claimed in claim 3 is characterized in that, described flat tube, side plate bend with identical radius of curvature with fin.
5. heat exchanger as claimed in claim 3 is characterized in that, described two limit portions bending curvature is inequality, and the limit portion radius of curvature of close inlet header one side is greater than the limit portion near outlet header one side.
6. heat exchanger as claimed in claim 2 is characterized in that, described radius of curvature near header one end is 300mm, and the radius of curvature of close kink one end is 400mm.
7. heat exchanger as claimed in claim 3 is characterized in that, described kink and limit portion form by the flat tube and the fin outside being stretched, its inboard being compressed.
8. heat exchanger as claimed in claim 4 is characterized in that, described kink and limit portion are by the bender bending and molding.
9. as each described heat exchanger of claim 1-8, it is characterized in that the material of described heat exchanger is an aluminum or aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100087112A CN101782300B (en) | 2009-01-21 | 2009-01-21 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100087112A CN101782300B (en) | 2009-01-21 | 2009-01-21 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101782300A true CN101782300A (en) | 2010-07-21 |
| CN101782300B CN101782300B (en) | 2012-01-25 |
Family
ID=42522398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100087112A Active CN101782300B (en) | 2009-01-21 | 2009-01-21 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101782300B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061719A (en) * | 2013-03-21 | 2014-09-24 | 杭州三花微通道换热器有限公司 | Bent heat exchanger and manufacturing method thereof |
| CN104534574A (en) * | 2014-10-15 | 2015-04-22 | 珠海格力电器股份有限公司 | Air conditioner outdoor unit and air conditioner |
| JP2015224844A (en) * | 2014-05-29 | 2015-12-14 | パナソニックＩｐマネジメント株式会社 | Heat exchanger |
| CN105928258A (en) * | 2016-06-17 | 2016-09-07 | 珠海格力电器股份有限公司 | Heat exchanger and air conditioner |
| CN110762929A (en) * | 2016-03-07 | 2020-02-07 | 东芝生活电器株式会社 | Refrigerator with a door |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5806585A (en) * | 1995-02-27 | 1998-09-15 | Mitsubishi Denki Kabushiki Kaisha | Heat exchanger, refrigeration system, air conditioner, and method and apparatus for fabricating heat exchanger |
-
2009
- 2009-01-21 CN CN2009100087112A patent/CN101782300B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061719A (en) * | 2013-03-21 | 2014-09-24 | 杭州三花微通道换热器有限公司 | Bent heat exchanger and manufacturing method thereof |
| JP2015224844A (en) * | 2014-05-29 | 2015-12-14 | パナソニックＩｐマネジメント株式会社 | Heat exchanger |
| CN104534574A (en) * | 2014-10-15 | 2015-04-22 | 珠海格力电器股份有限公司 | Air conditioner outdoor unit and air conditioner |
| CN104534574B (en) * | 2014-10-15 | 2018-08-03 | 珠海格力电器股份有限公司 | Air-conditioner outdoor unit and air conditioner |
| CN110762929A (en) * | 2016-03-07 | 2020-02-07 | 东芝生活电器株式会社 | Refrigerator with a door |
| CN110762929B (en) * | 2016-03-07 | 2022-04-19 | 东芝生活电器株式会社 | Refrigerator with a door |
| CN105928258A (en) * | 2016-06-17 | 2016-09-07 | 珠海格力电器股份有限公司 | Heat exchanger and air conditioner |
| CN105928258B (en) * | 2016-06-17 | 2019-10-22 | 珠海格力电器股份有限公司 | Heat exchanger and air-conditioning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101782300B (en) | 2012-01-25 |
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Address after: 310018 Liquan, Xinchang, Shaoxing Province, Qixing County, Zhejiang Co-patentee after: DANFOSS A/S Patentee after: SANHUA HOLDING GROUP Co.,Ltd. Address before: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 12 Avenue, No. 289 Patentee before: SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER Co.,Ltd. |
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Effective date of registration: 20120626 Address after: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 12 Avenue, No. 289 Patentee after: SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER Co.,Ltd. Address before: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 12 Avenue, No. 289 Patentee before: DANFOSS SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER Co.,Ltd. |
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Application publication date: 20100721 Assignee: SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER Co.,Ltd. Assignor: SANHUA HOLDING GROUP Co.,Ltd. Contract record no.: 2015990000010 Denomination of invention: Heat exchanger Granted publication date: 20120125 License type: Common License Record date: 20150106 |
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Effective date of registration: 20150228 Address after: 310018, No. 289-1, No. 12, Poplar Street, Hangzhou economic and Technological Development Zone, Hangzhou, Zhejiang Patentee after: SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER Co.,Ltd. Patentee after: DANFOSS A/S Address before: 310018 Liquan, Xinchang, Shaoxing Province, Qixing County, Zhejiang Patentee before: SANHUA HOLDING GROUP Co.,Ltd. Patentee before: DANFOSS A/S |
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Effective date of registration: 20231205 Address after: No.289-1, No.12 street, Baiyang street, Hangzhou Economic and Technological Development Zone, Hangzhou, Zhejiang Province Patentee after: SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER Co.,Ltd. Address before: 310018 no.289-1, 12 Baiyang street, Hangzhou Economic and Technological Development Zone, Hangzhou City, Zhejiang Province Patentee before: SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER Co.,Ltd. Patentee before: DANFOSS A/S |
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