CN108020099B - Micro-channel heat exchanger - Google Patents
Micro-channel heat exchanger Download PDFInfo
- Publication number
- CN108020099B CN108020099B CN201610962057.9A CN201610962057A CN108020099B CN 108020099 B CN108020099 B CN 108020099B CN 201610962057 A CN201610962057 A CN 201610962057A CN 108020099 B CN108020099 B CN 108020099B
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- Prior art keywords
- bending
- heat exchanger
- microchannel heat
- fins
- fin
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
- F28F3/027—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a microchannel heat exchanger, which comprises a pair of parallel collecting pipes, a plurality of parallel flat pipes and fins arranged between the adjacent flat pipes, wherein two ends of each flat pipe are respectively connected to an inner cavity of each collecting pipe, the microchannel heat exchanger is provided with at least one bending area along the length direction of each collecting pipe, the fins in the bending areas adopt bending fins, the bending fins are provided with at least one bending section with the bending direction identical to or opposite to that of the microchannel heat exchanger along the length direction of each collecting pipe, and the bending sections are stretched/compressed in the bending process of the microchannel heat exchanger. In the bending process of the micro-channel heat exchanger, the bending section of the bending fin is gradually stretched or compressed, so that the bending fin in the bending area is prevented from being pulled to crack.
Description
Technical Field
The invention relates to the air conditioning technology, in particular to a heat exchanger.
Background
The microchannel heat exchanger consists of a collecting pipe, microchannel flat pipes and fins, and has the advantages of light weight, compact structure, high heat exchange efficiency, full aluminum structure, convenience in recovery and the like; meanwhile, the micro-channel heat exchanger has small internal volume, is beneficial to greatly reducing the filling amount of the refrigerant, accords with the industry trend of energy conservation and environmental protection, and is widely applied to the field of commercial/household air conditioners.
In order to obtain corresponding heat exchange quantity and energy efficiency ratio in a limited unit space, two devices in an air conditioner are often required to be bent by a certain angle to increase the heat exchange area, so that the performance requirements during air conditioner design are met, and common bending shapes are generally L-shaped, C-shaped, U-shaped and the like. Air conditioning unit in the existing market mostly considers air conditioner to the heat pump of compromise refrigeration and heating, in order to satisfy air conditioning unit to the demand of drainage performance when the operation in winter, the microchannel heat exchanger generally designs into the pressure manifold level and arranges, and flat pipe and fin are arranged perpendicularly, therefore the microchannel heat exchanger need bend along pressure manifold length direction and form the structure that has the pointed angle. In the bending process of the traditional microchannel heat exchanger, fins on the inner side of the bend can be extruded, and deformation such as inverted fins and distortion occurs to block air circulation; the fin outside bending can be stretched, appears tensile deformation, is torn the circumstances such as even, seriously influences heat exchanger outward appearance, simultaneously because the fin is torn, the heat transfer performance of heat exchanger can reduce.
Therefore, how to reduce the influence of bending on the performance of the microchannel heat exchanger when the microchannel heat exchanger is bent along the direction of the collector pipe is a problem to be mainly solved in the field.
Disclosure of Invention
The invention aims to solve the technical problem of providing a micro-channel heat exchanger, which reduces the influence of bending on the performance of the micro-channel heat exchanger when the micro-channel heat exchanger is bent along the direction of a collector pipe.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a microchannel heat exchanger, includes a pair of parallel arrangement's pressure manifold, a plurality of parallel arrangement's flat pipe and sets up the fin between adjacent flat pipe, the both ends of flat pipe are connected to respectively the inner chamber of pressure manifold, and this microchannel heat exchanger has at least one district of bending along pressure manifold length direction, the fin in the district of bending adopts the fin of bending, the fin of bending is equipped with at least one section direction of bending and the microchannel heat exchanger section of bending that the direction is the same/opposite with the microchannel heat exchanger direction of bending along pressure manifold length direction, just the section of bending is stretched/compressed at the microchannel heat exchanger in-process of bending.
Preferably, the bent fin is provided with an air channel which is beneficial to air flow.
Preferably, the air channel is opened in the bending top area of the bending section.
Preferably, the bending section of the bending fin is V-shaped.
Preferably, a plurality of bending sections are connected in sequence to form a wavy structure.
Preferably, the two sides of the width of the bent fin are provided with flat plate parts which are connected with the flat tube thickness side planes in a brazing mode.
Furthermore, a plurality of bending fin fixing frames for fixing the bending fins are distributed along the length direction of the flat tube of the micro-channel heat exchanger
Preferably, the bent fin fixing frame comprises a straight section attached to the flat plate portion and an arc bulging section which is connected with the straight section and surrounds the windward side of the bent fin.
Preferably, the circular arc bulge section is provided with an air flow channel for facilitating air flow.
Preferably, the bent fin fixing frame and the air channel are staggered in the length direction of the flat pipe.
According to the technical scheme, at least one section of bent section which is stretched/compressed in the bending process of the micro-channel heat exchanger is arranged on the bent fin along the length direction of the collecting pipe, so that the bent section of the bent fin is gradually stretched or compressed in the bending process of the micro-channel heat exchanger, and the bent fin in the bent area is prevented from being cracked. In addition, a plurality of bending fin fixing frames for fixing the bending fins are distributed along the length direction of the flat tubes of the micro-channel heat exchanger and used for fixing the bending fins and the flat tubes and preventing the bending fins from deforming and falling in the process of assembling and moving the heat exchanger core body.
Drawings
The invention is further described with reference to the accompanying drawings and the detailed description below:
FIG. 1 is an overall structural view of a microchannel heat exchanger;
FIG. 2 is a schematic view of the plate section fins and arrangement thereof;
FIG. 3 is a partial view of the fins and flat tubes in the flat area;
FIG. 4 is a schematic view of a generic fin structure;
FIG. 5 is a perspective view of the fin mounting in the bending region;
FIG. 6 is a top view of the bend region fin installation.
Detailed Description
In a specific embodiment, as shown in fig. 1, the microchannel heat exchanger of the present invention includes a pair of parallel collecting pipes 2, a plurality of parallel flat pipes 21, and fins disposed between adjacent flat pipes, two ends of the flat pipes are respectively connected to an inner cavity of the collecting pipe, and an end of the collecting pipe 2 is connected to a connecting pipe 22. The micro-channel heat exchanger is divided into a bending area 10 and a flat plate area 11 along the length direction of the collecting pipe 2, the flat plate area adopts a common fin 110, and the bending area 10 is an area for bending the micro-channel heat exchanger in the bending process.
As shown in fig. 2 to 4, the general fins 110 are corrugated fins. The plain fins 110 provided in the flat plate region 11 include a straight section 111 and an arc top section 112 connected to the straight section, and the straight section 111 is provided with a louver structure for enhancing heat exchange.
In the bending process of the traditional microchannel heat exchanger, the fins on the inner side of the bend are extruded, and deformation such as inverted fins and distortion occurs to block air circulation; the fins outside the bends are stretched, and the fins are stretched, deformed and even torn. This embodiment employs specially designed fin bends 100 in the bend region 10.
As shown in fig. 5 and 6, the bent fin 100 is provided with at least one bent segment 1001 along the length direction of the collector, wherein the bent segment is stretched/compressed during the bending process of the microchannel heat exchanger. When the micro-channel heat exchanger is bent, the outer side of the bending area is stressed and stretched, and the inner side of the bending area is extruded. The bending fins in the bending area are stretched and deformed close to the bending outer side, the bending fins in the bending area are extruded and deformed close to the inner side, and the bending sections 1001 of the bending fins are gradually stretched or compressed in the bending process of the micro-channel heat exchanger, so that the bending fins in the bending area are prevented from being pulled and cracked.
The bent fin 100 is provided with an air passage 1000 for facilitating air flow. The air channel 1000 is provided in the bending top region of the bending section 1001 and is located in the bending top region on the windward side. The air passage 1000 is used for air circulation to reduce pressure loss on the windward side.
The bending sections of the bending fins 1000 are V-shaped, and the bending sections 1000 are connected in sequence to form a wavy structure. In this way, in the bending process, the bending sections 1000 are deformed in the bending process, so that the bending fins in the bending area are prevented from being pulled apart.
The two sides of the width of the bent fin are provided with flat plate parts 1002 which are in braze welding connection with the flat tube thickness side planes, so that good welding connection can be formed conveniently.
A plurality of bent fin fixing frames 101 for fixing the bent fins 100 are distributed along the length direction of the flat tube 21 of the micro-channel heat exchanger. The bent fin fixing frame 101 includes a straight section attached to the flat plate portion 1002 and an arc raised section that is connected to the straight section and surrounds the bent fin on the windward side, and the arc raised section is provided with an air flow channel 1010 that facilitates air flow. The bent fin fixing frame 101 is used for fixedly supporting the bent fins 100 and the flat tubes 21 and preventing the bent fins from deforming and falling in the assembling and moving processes of the heat exchanger core body, the air flow channel 1010 can reduce air flow resistance, and in order to avoid blocking the air channel 1000, the bent fin fixing frame 101 and the air channel 1000 are staggered in the length direction of the flat tubes.
The protection scope of the present invention is not limited to the above embodiments, for example, the bending section of the bending fin may be replaced by a U-shaped, S-shaped, W-shaped structure, and the shape of the bending fixing member may be changed, for example, a U-shaped structure is adopted, so long as the bending fin is fixed.
Claims (10)
1. The utility model provides a microchannel heat exchanger, includes a pair of parallel arrangement's pressure manifold, a plurality of parallel arrangement's flat pipe and sets up the fin between adjacent flat pipe, the both ends of flat pipe are connected to respectively the inner chamber of pressure manifold, this microchannel heat exchanger have at least one bending zone, its characterized in that along pressure manifold length direction: the fins in the bending area are bending fins, at least one bending section with the bending direction the same as or opposite to that of the micro-channel heat exchanger is arranged on the bending fins along the length direction of the collecting pipe, and the bending section is stretched/compressed in the bending process of the micro-channel heat exchanger.
2. The microchannel heat exchanger of claim 1, wherein: and air channels which are beneficial to air flow are arranged on the bent fins.
3. A microchannel heat exchanger as set forth in claim 2 wherein: the air channel is arranged in the bending top area of the bending section.
4. The microchannel heat exchanger of claim 1, wherein: the bending section of the bending fin is V-shaped.
5. The microchannel heat exchanger of claim 4, wherein: a plurality of sections of bending meet in order and form wavy structure.
6. The microchannel heat exchanger of any one of claims 1 to 5, wherein: the two sides of the width of the bent fin are provided with flat plate parts which are connected with the flat tube thickness side planes in a brazing mode.
7. The microchannel heat exchanger of claim 6, wherein: a plurality of bending fin fixing frames for fixing the bending fins are distributed along the length direction of the flat tube in the micro-channel heat exchanger.
8. The microchannel heat exchanger of claim 7, wherein: the bent fin fixing frame comprises a flat section attached to the flat plate part and an arc bulged section which is connected with the flat section and surrounds the windward side of the bent fin.
9. The microchannel heat exchanger of claim 8, wherein: the circular arc bulge section is provided with an air flow channel which is beneficial to air flow.
10. The microchannel heat exchanger of claim 7, wherein: the bent fin fixing frame and the air channel are staggered in the length direction of the flat pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610962057.9A CN108020099B (en) | 2016-10-28 | 2016-10-28 | Micro-channel heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610962057.9A CN108020099B (en) | 2016-10-28 | 2016-10-28 | Micro-channel heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108020099A CN108020099A (en) | 2018-05-11 |
| CN108020099B true CN108020099B (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610962057.9A Active CN108020099B (en) | 2016-10-28 | 2016-10-28 | Micro-channel heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108020099B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668468B (en) * | 2018-11-27 | 2024-04-05 | 珠海格力电器股份有限公司 | Fin assembly, micro-channel heat exchanger and air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4876778A (en) * | 1987-03-30 | 1989-10-31 | Toyo Radiator Co., Ltd. | Method of manufacturing a motorcycle radiator |
| EP0953816A2 (en) * | 1998-04-28 | 1999-11-03 | Denso Corporation | Heat exchanger and method of manufacturing same |
| CN101738126A (en) * | 2009-12-14 | 2010-06-16 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchanger and fin thereof |
| CN101782337A (en) * | 2009-01-20 | 2010-07-21 | 三花丹佛斯（杭州）微通道换热器有限公司 | Micro-channel heat exchanger |
| CN203432438U (en) * | 2013-05-21 | 2014-02-12 | 杭州三花微通道换热器有限公司 | Heat exchanger |
-
2016
- 2016-10-28 CN CN201610962057.9A patent/CN108020099B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4876778A (en) * | 1987-03-30 | 1989-10-31 | Toyo Radiator Co., Ltd. | Method of manufacturing a motorcycle radiator |
| EP0953816A2 (en) * | 1998-04-28 | 1999-11-03 | Denso Corporation | Heat exchanger and method of manufacturing same |
| CN101782337A (en) * | 2009-01-20 | 2010-07-21 | 三花丹佛斯（杭州）微通道换热器有限公司 | Micro-channel heat exchanger |
| CN101738126A (en) * | 2009-12-14 | 2010-06-16 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchanger and fin thereof |
| CN203432438U (en) * | 2013-05-21 | 2014-02-12 | 杭州三花微通道换热器有限公司 | Heat exchanger |
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| Publication number | Publication date |
|---|---|
| CN108020099A (en) | 2018-05-11 |
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