CN116576716A - Diversity flow structure and heat exchanger with same - Google Patents
Diversity flow structure and heat exchanger with same Download PDFInfo
- Publication number
- CN116576716A CN116576716A CN202310593017.1A CN202310593017A CN116576716A CN 116576716 A CN116576716 A CN 116576716A CN 202310593017 A CN202310593017 A CN 202310593017A CN 116576716 A CN116576716 A CN 116576716A
- Authority
- CN
- China
- Prior art keywords
- flow
- diversity
- flow equalizing
- brazing
- heat exchange
- 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.)
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Links
- 238000005219 brazing Methods 0.000 claims abstract description 69
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 238000003780 insertion Methods 0.000 claims abstract description 15
- 230000037431 insertion Effects 0.000 claims abstract description 15
- 238000010030 laminating Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000012545 processing Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 4
- 238000010923 batch production Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
- F28F9/0273—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes with multiple holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a diversity flow structure and a heat exchanger with the diversity flow structure, comprising a sub-header part and a brazing plate part, wherein the diversity header part is provided with an internal fluid channel, an external first brazing surface and a uniform flow hole communicated with the inside and the outside; one of the first brazing surface and the second brazing surface is provided with a flow equalizing cavity, the first brazing surface and the second brazing surface are integrally bonded and brazed, and the heat exchange tube insertion holes are communicated with the fluid channel through the corresponding flow equalizing cavity and the flow equalizing hole; according to the diversity flow structure, the quantity and the size of the flow equalizing holes are set, so that the flow of a medium entering the flow equalizing cavity can be controlled; the heat exchanger with the diversity flow structure can meet the requirements of high pressure bearing and uniform diversity flow, and the existing microchannel heat exchanger production process is adopted, so that the processing difficulty is low, and the mass production is convenient.
Description
Technical Field
The invention relates to the technical field of heat exchange, in particular to a diversity flow structure and a heat exchanger with the diversity flow structure.
Background
The microchannel heat exchanger is characterized in that a plurality of flat flow flat pipes with single holes or porous structures are arranged between two parallel flow dividing and collecting pipes to be connected, and heat exchange media are distributed from the inner cavity of the flow dividing and collecting pipe to a plurality of heat exchange pipes at different positions connected with the flow dividing and collecting pipes by utilizing the flow dividing and collecting structures to exchange heat with external circulating media. Along with the gradual popularization of micro-channel heat exchangers mainly using the aluminum-copper-substituted application technology, the micro-channel heat exchangers have a key effect in various social life fields such as automobiles, electronics, air conditioners, chemical industry, medical treatment and the like due to high heat exchange efficiency and low processing difficulty.
The existing flow dividing and collecting structure is generally formed by directly punching holes on the wall surface of a column body with a round or D-shaped cross section, and inserting and connecting the end parts of the heat exchange flat tubes with corresponding flat tube insertion holes on the flow dividing and collecting pipes for brazing. The circular cross section flow dividing and collecting structure has larger volume, higher filling amount of circulating working medium and larger risk of environmental pollution; the D-shaped cross section diversity flow structure has low pressure bearing capacity, high processing and assembling difficulty and low welding yield. Particularly when being used for a three-medium heat exchanger, the existing diversity flow has complex structural form, immature scheme and difficult realization of batch production.
In addition, in the existing diversity flow structure, in the process of distributing the circulating medium, the medium fluid cannot be distributed into the connected flat pipes accurately, and the situation of uneven heat exchange can be caused. In order to solve the problem, the Chinese patent application No. CN201410410165.6 proposes an improved refrigerant flow dividing structure, a cylinder with a flow dividing cavity is arranged in a traditional flow dividing pipe, and the flow of circulating media entering different cavities is controlled by adjusting parameters such as track curvature, track length, cross section area, shape and the like of a groove-shaped flow channel in the structure, so that the aim of uniformly distributing heat is fulfilled. However, the above structure has some difficulties in the popularization process: (1) The structure is complex in the design of the groove-type flow channel and the manufacture of the column body, is difficult to integrally process and form, and has high mass production difficulty; (2) The split flow cavity increases the stamping difficulty of the heat exchange tube joint of the split flow tube, and if the split flow cavity is installed and then processed, the punching of the holes is difficult; if the holes are drilled and then machined, the problem that the inner diameter of the diversity current collector is reduced at the moment also increases the installation difficulty of the diversion cavity.
In conclusion, further exploration of a diversity flow structure with easy processing and high average flow property is a key point of technological breakthrough for popularizing urgent needs of the microchannel heat exchanger.
Disclosure of Invention
The invention aims to disclose a diversity flow structure and a heat exchanger with the diversity flow structure, which meet the requirements of high pressure bearing and uniform diversity flow, adopt the existing micro-channel heat exchanger production process, have low processing difficulty and are convenient for batch production.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a diversity flow structure comprises a diversity pipe part and a brazing plate part, wherein the diversity pipe part is provided with an inner fluid channel, an outer first brazing surface and a uniform flow hole communicated with the inside and the outside; one of the first brazing surface and the second brazing surface is provided with a flow equalizing cavity, the first brazing surface and the second brazing surface are integrally bonded and brazed, and the heat exchange tube insertion holes are communicated with the fluid channel through the corresponding flow equalizing cavity and the flow equalizing hole.
Optionally, the flow equalizing cavity is of a groove structure and is arranged on the first brazing surface, the flow equalizing hole is arranged in the flow equalizing cavity, and the flow equalizing cavity is communicated with the fluid channel through the flow equalizing hole.
Further, a brazing narrow slit is arranged between the adjacent heat exchange tube insertion holes.
Optionally, the flow equalizing cavity is of a groove structure and is arranged on the second brazing surface, and the heat exchange tube insertion hole is arranged at the bottom of the flow equalizing cavity and is communicated with the flow equalizing cavity.
Further, a brazing narrow slit is arranged between the adjacent flow equalizing cavities.
Preferably, the flow equalizing cavity is similar to the heat exchange tube insertion hole in shape and slightly larger in size.
Preferably, at least one of the diversity tube portion and the brazing sheet portion is provided with positioning sides.
Preferably, the flow equalizing hole is one or a combination of a plurality of round holes and special-shaped holes.
The invention also provides a heat exchanger, which comprises a diversity flow structure, heat exchange flat tubes and fins, wherein the diversity flow structure is any one of the diversity flow structures.
Based on the technical scheme, the invention has the following advantages:
the first brazing surface and the second brazing surface are integrally adhered and brazed, so that the diversity tube part and the brazing plate part are firmly combined to form a high-pressure-bearing diversity flow structure.
Through setting up the quantity and the size of flow equalizing hole, the steerable gets into the medium flow of chamber that flow equalizes, makes the heat transfer medium flow among the different heat transfer flat tubes keep unanimous, is convenient for realize the high-efficient heat transfer between intraductal, the outer multiple heat transfer medium of pipe.
According to the heat exchanger provided by the invention, the existing microchannel heat exchanger production process is adopted in the manufacturing process, and the heat collecting pipe part, the brazing plate part, the heat exchange flat pipes and the fins are brazed in a furnace once, so that the processing difficulty is low, and the mass production is facilitated.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an overall exploded view of a diversity flow architecture in accordance with embodiment 1 of the present invention;
FIG. 2 is a block diagram showing the overall cross-section of a diversity flow configuration in embodiment 1 of the present invention;
FIG. 3 is a partial view of a brazing sheet portion of one diversity flow configuration in accordance with embodiment 1 of the invention;
FIG. 4 is an overall exploded view of a diversity flow architecture in embodiment 2 of the present invention;
FIG. 5 is an overall exploded view of a diversity flow architecture in embodiment 3 of the present invention;
FIG. 6 is an overall construction view of a brazing sheet portion of a diversity flow structure in accordance with embodiment 3 of the invention;
FIG. 7 is one of the overall split diagrams of a diversity flow architecture in embodiment 4 of the present invention;
fig. 8 is a second overall split view of a diversity flow architecture in embodiment 4 of the present invention.
Reference numerals:
1. a sub-manifold section; 11. a fluid channel; 12. a first brazing surface; 13. a flow equalizing cavity; 14. positioning the side edges; 10. flow equalizing holes;
2. a brazing sheet portion; 21. a heat exchange tube jack; 22. a second brazing surface; 23. and (5) brazing the narrow slits.
Detailed Description
In order to clearly demonstrate the objects, technical solutions and technical advantages of the present invention, the technical solutions in the present invention will be further clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment 1 of a diversity flow structure provided by the invention, as shown in fig. 1 to 3, comprises a diversity pipe part 1 and a brazing sheet part 2, wherein the diversity pipe part 1 is provided with an inner fluid passage 11, an outer first brazing surface 12 and a flow equalizing hole 10 communicated with the inside and the outside, and the brazing sheet part 2 is provided with a heat exchange pipe jack 21 and a second brazing surface 22.
The flow equalizing cavity 13 is of a groove structure and is arranged on the first brazing surface 12, the flow equalizing hole 10 is arranged in the flow equalizing cavity 13, and the flow equalizing cavity 13 is communicated with the fluid channel 11 through the flow equalizing hole 10.
A brazing narrow slit 23 is arranged between the adjacent heat exchange tube insertion holes 21.
The first brazing surface 12 and the second brazing surface 22 are integrally adhered and brazed, and the heat exchange tube insertion holes 21 are communicated with the fluid channel 11 through the corresponding flow equalizing cavity 13 and the flow equalizing hole 10 to form a flow diversity structure of an orifice plate flow equalizing mode.
During the brazing process, part of the solder flows into the brazing narrow gap 23, so that the brazing quality of the first brazing surface 12 and the second brazing surface 22 is improved, and the effect that the media in different flow equalizing cavities 13 are kept isolated from each other and are not mixed with each other is enhanced.
In the structure of this embodiment, the flow equalizing cavity 13 is similar in shape and slightly larger in size to the heat exchange tube insertion hole 21.
In the structure of the present embodiment, the flow equalizing hole 10 is one or a combination of a plurality of circular holes and a plurality of shaped holes.
The number of the flow equalizing holes 10 in each flow equalizing cavity 13 is one or more, the number and the size of the flow equalizing holes 10 in each flow equalizing cavity 13 are not limited, and the medium flow entering each flow equalizing cavity 13 can be controlled by setting the number and the size of the flow equalizing holes 10 in each flow equalizing cavity, so that the heat exchange medium flow in different heat exchange flat pipes is kept consistent, and the efficient heat exchange between various heat exchange mediums inside and outside the pipes is conveniently realized.
As shown in fig. 4, in embodiment 2 of a diversity flow structure provided by the present invention, the main structure of the diversity flow structure is substantially the same as that of embodiment 1, and the same parts are not described herein, and the difference between this embodiment 2 and embodiment 1 is that: the length of the flow equalizing cavity 13 is equal to the width of the first brazing surface 12, so that the manufacture of the diversity tube part 1 can be smoother; correspondingly, positioning side edges 14 are arranged on two sides of the brazing sheet part 2, and the positioning side edges 14 need to completely wrap the flow equalizing cavities 13 so as to keep the media in different flow equalizing cavities 13 isolated from each other and not mixed with each other.
As shown in fig. 5 to 6, the main structure of embodiment 3 of the diversity flow structure provided by the present invention is substantially the same as that of embodiment 1, and the same parts are not described herein, and the difference between embodiment 3 and embodiment 1 is that: the flow equalizing cavity 13 is of a groove structure and is arranged on the second brazing surface 22, and the heat exchange tube insertion hole 21 is arranged at the bottom of the flow equalizing cavity 13 and is communicated with the flow equalizing cavity 13; a brazing narrow slit 23 is arranged between the adjacent flow equalizing cavities 13.
The number of the fluid passages 11 may be two or more, and is not limited herein; each fluid channel 11 is communicated with the corresponding flow equalizing cavity 13 through the corresponding flow equalizing hole 10, so that the media in each fluid channel 11 are kept isolated from each other and are not mixed with each other, and different media can be introduced into different fluid channels 11.
The positioning side edges 14 are provided on both sides of the sub-manifold portion 1, and the positioning side edges 14 may be provided on at least one of the sub-manifold portion 1 and the brazing sheet portion 2, and are not limited thereto.
The function of the positioning side 14 is: on one hand, the contact position of the sub-header 1 and the brazing sheet 2 is convenient to find, and the alignment of the flow equalizing holes 10 and the flow equalizing cavities 13 can be ensured, so that the brazing quality is improved; on the other hand, the bearing strength of the diversity flow structure is increased.
As shown in fig. 7 to 8, in embodiment 4 of a diversity flow structure provided by the present invention, the main structure is substantially the same as that of embodiment 3, and the same parts are not described herein, and the difference between this embodiment 4 and embodiment 3 is that: the second brazing surface 22 is omitted, the flow equalizing cavity 13 is divided into an upper part and a lower part, the lower part of the flow equalizing cavity 13 is similar to the upper part of the flow equalizing cavity 13 in shape and slightly larger in size, the lower part of the flow equalizing cavity 13 is of a groove structure and is arranged on the first brazing surface 12, the upper part of the flow equalizing cavity 13 is of a groove structure and is arranged on the lower part of the heat exchange tube jack 21, and the heat exchange tube jack 21 is communicated with the fluid channel 11 through the corresponding flow equalizing cavity 13 and the flow equalizing hole 10 through bonding and brazing to form a diversity flow structure of an orifice plate flow equalizing mode.
The structure of the embodiment improves the welding quality that the media in different flow equalizing cavities 13 are kept mutually isolated and mutually unblended while ensuring high bearing pressure of the flow dividing and collecting structure.
The invention also provides an embodiment 5 of the heat exchanger, which comprises a current dividing and collecting device, a heat exchanging flat tube and fins, wherein the current dividing and collecting device is of the current dividing and collecting structure, the heat exchanging flat tube is inserted and soldered in the heat exchanging tube insertion hole, and the heat exchanging flat tube is communicated with the fluid channel through the current equalizing cavity and the current equalizing small holes; the fins are brazed between the heat exchange flat tubes.
The heat exchanger proposed in this embodiment 5 is convenient to realize mass production by dividing the flow dividing structure into the flow dividing tube dividing portion 1 and the brazing sheet portion 2, after the first brazing surface 12 and the second brazing surface 22 are bonded and brazed together, the heat exchange medium in the fluid channel 11 can flow along the flow equalizing holes 10, the flow equalizing cavities 13 and the heat exchange tube insertion holes 21 in sequence, and reach the heat exchange flat tubes, wherein the flow of the medium entering each flow equalizing cavity 13 can be controlled by setting the number and the size of the flow equalizing holes 10 in each flow equalizing cavity 13, so that the flow of the heat exchange medium in different heat exchange flat tubes is kept consistent, and efficient heat exchange between various heat exchange mediums inside and outside the tubes is convenient to realize.
In the heat exchanger proposed in this embodiment 5, the brazing process of the existing microchannel heat exchanger is adopted in the manufacturing process, and the diversity tube portion, the brazing plate portion, the heat exchange flat tube and the fins are brazed once through the furnace, so that the processing difficulty is low, and the batch production is convenient.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides a diversity flow structure, its characterized in that includes sub-header portion (1), brazing sheet portion (2), sub-header portion (1) is equipped with inside fluid channel (11), outside first brazing surface (12) and inside and outside communicating flow equalizing hole (10), brazing sheet portion (2) are equipped with heat exchange tube jack (21) and second brazing surface (22), one of first brazing surface (12) and second brazing surface (22) is equipped with flow equalizing cavity (13), first brazing surface (12) and second brazing surface (22) laminating braze an organic whole, heat exchange tube jack (21) are communicated with fluid channel (11) through corresponding flow equalizing cavity (13), flow equalizing hole (10), constitute the diversity flow structure of orifice plate flow equalizing mode.
2. Diversity flow structure according to claim 1, characterized in that the flow equalizing cavity (13) is a groove structure and is arranged on the first brazing surface (12), the flow equalizing hole (10) is arranged in the flow equalizing cavity (13), and the flow equalizing cavity (13) is communicated with the fluid channel (11) through the flow equalizing hole (10).
3. Diversity flow structure according to claim 2, characterized in that brazing slits (23) are provided between adjacent heat exchange tube insertion holes (21).
4. The flow diversity structure according to claim 1, wherein the flow equalizing cavity (13) is a groove structure and is disposed on the second brazing surface (22), and the heat exchange tube insertion hole (21) is disposed at the bottom of the flow equalizing cavity (13) and is communicated with the flow equalizing cavity (13).
5. Diversity flow structure according to claim 4, characterized in that brazing slits (23) are provided between adjacent flow equalizing chambers (13).
6. Diversity flow structure according to claim 1, characterized in that the flow equalizing chamber (13) is shaped like the heat exchange tube insertion hole (21) and has a slightly larger size.
7. Diversity flow structure according to any of claims 1-6, characterized in that at least one of the diversity tube part (1) and brazing sheet part (2) is provided with positioning sides (14).
8. The diversity flow structure according to any of claims 1 to 6, characterized in that: the flow equalizing hole (10) is one or a combination of a plurality of round holes and special-shaped holes.
9. A heat exchanger comprising a diversity flow structure, heat exchange flat tubes, fins, characterized in that the diversity flow structure is the diversity flow structure according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310593017.1A CN116576716A (en) | 2023-05-24 | 2023-05-24 | Diversity flow structure and heat exchanger with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310593017.1A CN116576716A (en) | 2023-05-24 | 2023-05-24 | Diversity flow structure and heat exchanger with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116576716A true CN116576716A (en) | 2023-08-11 |
Family
ID=87537515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310593017.1A Pending CN116576716A (en) | 2023-05-24 | 2023-05-24 | Diversity flow structure and heat exchanger with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116576716A (en) |
-
2023
- 2023-05-24 CN CN202310593017.1A patent/CN116576716A/en active Pending
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