CN220288355U - Relieved tooth microchannel heat exchanger for refrigerator - Google Patents
Relieved tooth microchannel heat exchanger for refrigerator Download PDFInfo
- Publication number
- CN220288355U CN220288355U CN202321980441.3U CN202321980441U CN220288355U CN 220288355 U CN220288355 U CN 220288355U CN 202321980441 U CN202321980441 U CN 202321980441U CN 220288355 U CN220288355 U CN 220288355U
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- microchannel
- fin
- flat tube
- fins
- heat exchanger
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- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010862 gear shaping Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a relieved tooth microchannel heat exchanger for a refrigerator, which comprises an upper collecting pipe and a lower collecting pipe which are arranged in parallel, and is characterized in that a group of fin microchannel flat pipes are vertically and uniformly arranged between the upper collecting pipe and the lower collecting pipe, wherein the fin microchannel flat pipes on two sides are single-sided fin microchannel flat pipes, and the middle part is double-sided fin microchannel flat pipes; the single-sided fin micro-channel flat tube and the double-sided fin micro-channel flat tube comprise flat tube bodies, fins which are integrated with the flat tube bodies into a whole are arranged on the surfaces of the flat tube bodies, and the fins are of cambered surface fin structures or wavy fin structures. The heat resistance between the fins and the flat tube body is eliminated, the structural strength of the fins is enhanced, the sensitivity of the fin flat tube to vibration is greatly reduced, the heat exchange efficiency of the micro-channel flat tube is improved, the volume of the heat exchanger is reduced, and the product quality is effectively improved.
Description
Technical Field
The utility model relates to a heat exchanger technology, in particular to a relieved tooth microchannel heat exchanger for a refrigerator.
Background
The surface of the microchannel aluminum flat tube for the original refrigerator is free of fins, and the heat exchange area is increased by inserting and welding fins between the two aluminum flat tubes. The fins are connected with the aluminum flat tubes through brazing flux, so that the heat resistance is high, and the performance of the micro-channel heat exchanger is increased due to the phenomena of cold joint, unstable welding and the like. In the refrigerator, the micro-channel heat exchanger is connected with the compressor, so that the vibration amplitude is larger, the welding requirement on the fins is higher, and the production difficulty is increased.
In order to solve the problems of welding and the like, the prior art starts to apply the relieved tooth type fins, such as a relieved tooth phase-change radiator designed by patent publication number CN114430647A, and comprises a radiating base, a relieved tooth radiating unit and a radiating cover plate; a refrigerant chamber is arranged in the heat dissipation base; the first surface of the heat dissipation base is provided with a heating area, the relieved tooth heat dissipation unit is arranged on the second surface of the heat dissipation base, and the heat dissipation cover plate is arranged on the relieved tooth heat dissipation unit; the relieved tooth heat dissipation unit comprises at least one flat tube and a plurality of relieved teeth arranged on at least one surface of the flat tube. Another example is a relieved tooth radiator that patent publication No. CN209558980U discloses, including base, heat radiation structure and fixed establishment, the base rear is provided with the fixed strip, and the base the place ahead is installed through inlaying the groove that runs through, and heat radiation structure is through inlaying the setting in inside the base top, and base externally mounted has the mounting bracket, and fixed establishment sets up in the mounting bracket outside, and the mounting bracket below is provided with the grillwork, and the grillwork below is provided with the blotter. In the disclosed technologies, the relieved fins are arranged in a planar structure, and the fully-unfolded fins occupy large space, so that the volume of a heat exchanger product formed by the fully-unfolded fins is also larger, and in addition, for the basic flat tube body of the relieved fins, the structural strength of the whole flat tube is directly influenced by arranging the micro-channels in the basic flat tube body, so that no micro-channel optimization scheme exists in the disclosed technologies.
Disclosure of Invention
The utility model aims to solve the problems and provide the relieved tooth microchannel heat exchanger for the refrigerator, which has the characteristics of low vibration sensitivity, high fin structural strength, high heat exchange efficiency, capacity of reducing the volume of the heat exchanger and the like.
The technical problems of the utility model are mainly solved by the following technical proposal: a relieved tooth microchannel heat exchanger for a refrigerator comprises an upper collecting pipe and a lower collecting pipe which are arranged in parallel, and is characterized in that a group of fin microchannel flat pipes are vertically and uniformly arranged between the upper collecting pipe and the lower collecting pipe, wherein the fin microchannel flat pipes on two sides are single-sided fin microchannel flat pipes, and the middle part is double-sided fin microchannel flat pipe; the single-sided fin micro-channel flat tube and the double-sided fin micro-channel flat tube comprise flat tube bodies, fins which are integrated with the flat tube bodies into a whole are arranged on the surfaces of the flat tube bodies, and the fins are of cambered surface fin structures or wavy fin structures.
In the foregoing tooth microchannel heat exchanger for a refrigerator, preferably, two ends of the lower collecting pipe are respectively provided with an inlet pipe and an outlet pipe.
In the foregoing relieved tooth microchannel heat exchanger for a refrigerator, preferably, the flat tube body is provided with a plurality of microchannels, and the microchannels include circular microchannels and special-shaped microchannels.
In the foregoing relieved tooth microchannel heat exchanger for a refrigerator, preferably, the circular microchannels and the shaped microchannels are arranged at intervals.
In the foregoing relieved tooth microchannel heat exchanger for a refrigerator, preferably, the circular microchannels are uniformly arranged along the length direction of the flat tube body, and the special-shaped microchannels are arranged in the middle of the circular microchannels.
In the foregoing relieved tooth microchannel heat exchanger for a refrigerator, preferably, the cross section of the profiled microchannel is a polygon, and the polygon is a straight edge or an arc edge.
In the foregoing relieved tooth microchannel heat exchanger for a refrigerator, preferably, on the flat tube of the double-sided fin microchannel, fins on two surfaces of the flat tube body are arranged in a staggered manner.
In the foregoing relieved tooth microchannel heat exchanger for a refrigerator, preferably, the fins on adjacent surfaces of the flat tubes of the double-sided fin microchannel are arranged alternately, and gaps are maintained between the fins.
According to the scheme, the microchannel flat tube fins are obtained by utilizing a relieved tooth process, and then the microchannel flat tube fins form the heat exchange main body, and as the fins and the flat tubes are of the same material and the same body are of the uninterrupted integrated structure, no thermal resistance exists, so that the heat exchange efficiency can be increased. Meanwhile, the fins integrated with the flat tubes have lower vibration sensitivity, so that the product quality can be effectively improved, and potential risk hidden danger of a brazing process is solved.
The fin in the heat exchange main body is designed into an arc-shaped or wave-shaped structure, and the non-planar curved surface structure has higher structural strength than a single plane as the fin, and is formed at one time like the plane fin during manufacturing, so that the process cost is not increased. The design of the fins shortens the longer fins after bending through the deformation of the radiating surfaces, so that the volume of the heat exchanger is reduced on the premise of not reducing the radiating area.
The micro-channel in the flat tube body is specially designed by the scheme: it is a combination of round micro-channels and shaped micro-channels. The circular micro-channel can ensure the strength of the flat pipe body and prevent the micro-channel from being extruded and deformed due to stress in the tooth machining process; besides being used as a normal refrigerant channel, the round micro-channel can also be filled with a cold storage agent to form a micro-channel flat tube with cold storage capacity. The special-shaped micro-channel can be used as a main refrigerant channel.
In order to smoothly ensure that the flat tubes of the relieved tooth micro-channel are assembled into a heat exchanger finished product with more reasonable structure and more compact volume, the fins of the flat tubes of the double-sided fin designed by the scheme are asymmetrically arranged. When the finished heat exchanger is assembled, the opposite fin groups on two adjacent flat tubes form an assembly form of staggered insertion. The method also satisfies the processing of the relieved tooth fins, is limited by the restriction that the spacing between two adjacent fins on one side is not too small, otherwise, the shaping processing of the fins cannot be ensured. The scheme utilizes the limitation, and adjacent fins mutually fill gaps through staggered penetration, so that the volume of the heat exchanger is further reduced.
Compared with the prior art, the utility model has the beneficial effects that: through the design of cambered surface shape fin, wave fin structure and circular dysmorphism combination formula microchannel to utilize the gear shaping technology to make fin and flat pipe body fuse as an organic wholely, eliminated the thermal resistance between fin and the flat pipe body, strengthened the structural strength of fin self, reduced the sensitivity of fin flat pipe to vibrations by a wide margin, improved the flat pipe heat exchange efficiency of microchannel, reduced the volume of heat exchanger, improved product quality effectively.
Drawings
Fig. 1 is a schematic view of a structure of the present utility model.
Fig. 2 is a front view of the present utility model.
Fig. 3 is a partially enlarged schematic view of the structure at M in fig. 2.
FIG. 4 is a schematic diagram of a double-sided fin microchannel flat tube embodiment of the utility model.
Fig. 5 is a top view of fig. 4.
FIG. 6 is a schematic diagram of the positional relationship of the fins after mating between adjacent double-sided fin microchannel flat tubes.
FIG. 7 is a schematic structural view of an embodiment of a single-sided fin microchannel flat tube of the present utility model.
FIG. 8 is a schematic diagram of an embodiment of a double sided corrugated fin.
FIG. 9 is a schematic diagram of the positional relationship of the double-sided corrugated fins after mating.
In the figure: 1. the heat exchanger comprises an upper collecting pipe, a lower collecting pipe, an inlet pipe, an outlet pipe, a single-sided fin micro-channel flat pipe, a double-sided fin micro-channel flat pipe, a flat pipe body, a fin, a round micro-channel, a special-shaped micro-channel and a wavy fin.
Detailed Description
The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings.
Referring to fig. 1 and 2, the relieved tooth microchannel heat exchanger for a refrigerator of the present embodiment includes an upper collecting pipe 1 and a lower collecting pipe 2 which are arranged in parallel up and down, and a group of fin microchannel flat pipes are vertically and uniformly arranged between the upper collecting pipe 1 and the lower collecting pipe 2 in parallel, wherein the fin microchannel flat pipes on two sides are single-sided fin microchannel flat pipes 5, and the middle part is double-sided fin microchannel flat pipes 6. The two ends of the lower collecting pipe 2 are respectively provided with an inlet pipe 3 and an outlet pipe 4, the inlet pipe 3 and the outlet pipe 4 are respectively provided with a necking pipe, and the two pipes have the same size and structure.
The basic structure of the single-sided fin micro-channel flat tube 5 is the same as that of the double-sided fin micro-channel flat tube 6, except that the former is a flat surface shoveling fin as shown in fig. 7, and the latter is a double-sided shoveling fin. The specific structure of the double-sided fin micro-channel flat tube 6 will be described below by taking the example. The double-sided fin micro-channel flat tube 6 comprises a flat tube body 601, as shown in fig. 3 to 6, fins 602 which are integrated with the flat tube body 601 are arranged on the surface of the flat tube body 601, the fins 602 are arc-shaped fin structures or wavy fin structures, and the wavy fin structures are shown in fig. 8 and 9.
The micro-channel comprises 7 circular micro-channels 603 and 6 special-shaped micro-channels 604, wherein the circular micro-channels 603 and the special-shaped micro-channels 604 are arranged at intervals, namely, the circular micro-channels 603 are arranged at the two ends of the width of the flat pipe body 601, and the middle part of the flat pipe body is formed by arranging the circular micro-channels 603 and the special-shaped micro-channels 604 at intervals.
An arrangement is preferred: 13 micro-channels are arranged in the flat pipe body 601, each micro-channel comprises 5 circular micro-channels 603 and 8 special-shaped micro-channels 604, wherein the 5 circular micro-channels 603 are uniformly arranged along the length direction of the flat pipe body 601, and 1 circular micro-channel 603 is preferably arranged on two sides of the flat pipe body 601 respectively, and one circular micro-channel 603 is arranged on every two special-shaped micro-channels 604 in other middle parts.
The cross section of the profiled micro-channel 604 in the above embodiment is a quadrilateral, in which three sides are straight sides and one side is an arc side.
On the double-sided fin micro-channel flat tube 6, fins 602 on two surfaces of the flat tube body 601 are arranged in a staggered manner:
when the fins 602 are in a cambered fin structure, referring to fig. 4 and 6 again, the cambered fins 602 on one side are formed by rotating the fins on the other side by 180 degrees, and when the fin is assembled, the fins 602 on the adjacent flat tubes are alternately inserted to form a stacked fin form.
When the fins 602 are of a wavy fin 605 structure, the fins 602 on the two surfaces of the flat tube body 601 are also asymmetrically arranged, and when the fin is assembled, the wavy fins 605 on the adjacent flat tubes are alternately inserted to form a stacked fin mode.
The middle part between the upper collecting pipe 1 and the lower collecting pipe 2 adopts double-sided fin micro-channel flat pipes 6, fins 602 on the adjacent surfaces of the double-sided fin micro-channel flat pipes are mutually inserted to form interval arrangement, a mold is used for positioning calandria, gaps are reserved among all the fins 602, and single-sided fin micro-channel flat pipes 5 are arranged on two sides of the double-sided fin micro-channel flat pipes; then the upper collecting pipe 1 and the lower collecting pipe 2 are assembled and welded, then the inlet pipe 3 and the outlet pipe 4 are welded, and finally leakage detection is performed.
In this embodiment, the shaped micro-channel 604 can be used as a main coolant channel, and the circular micro-channel 603 can be used as a normal coolant channel, and can also be filled with a coolant to form a micro-channel flat tube with cold storage capability.
The above embodiments are illustrative of the present utility model, and not limiting, and any simple modified structure of the present utility model is within the scope of the present utility model.
Claims (8)
1. A relieved tooth microchannel heat exchanger for a refrigerator comprises an upper collecting pipe (1) and a lower collecting pipe (2) which are arranged in parallel, and is characterized in that a group of fin microchannel flat pipes are vertically and uniformly arranged between the upper collecting pipe and the lower collecting pipe, wherein the fin microchannel flat pipes on two sides are single-sided fin microchannel flat pipes (5), and the middle part is a double-sided fin microchannel flat pipe (6); the single-sided fin micro-channel flat tube and the double-sided fin micro-channel flat tube comprise a flat tube body (601), fins (602) which are integrated with the flat tube body are arranged on the surface of the flat tube body, and the fins are of cambered surface fin structures or wave-shaped fin structures.
2. The relieved tooth microchannel heat exchanger for the refrigerator according to claim 1, wherein an inlet pipe (3) and an outlet pipe (4) are respectively arranged at two ends of the lower collecting pipe (2).
3. The relieved tooth microchannel heat exchanger for a refrigerator according to claim 1, wherein a plurality of microchannels are arranged in the flat tube body (601), and each microchannel comprises a circular microchannel (603) and a special-shaped microchannel (604).
4. A relieved tooth microchannel heat exchanger for a refrigerator according to claim 3, wherein the circular microchannel (603) and the profiled microchannel (604) are arranged at intervals.
5. A relieved tooth microchannel heat exchanger for a refrigerator according to claim 3, wherein the circular microchannels (603) are uniformly arranged along the length direction of the flat tube body (601), and the special-shaped microchannels (604) are arranged in the middle gaps.
6. The relieved tooth microchannel heat exchanger for a refrigerator as claimed in claim 4 or 5, wherein the profiled microchannel (604) has a polygonal cross section, and the polygonal cross section is a straight edge or an arc edge.
7. The relieved tooth microchannel heat exchanger for a refrigerator according to claim 1, wherein fins on two surfaces of the flat tube body (601) are arranged in a staggered manner on the flat tube (6) of the double-sided fin microchannel.
8. The relieved tooth microchannel heat exchanger for refrigerator according to claim 1 or 7, wherein the fins on the adjacent surfaces of the flat tubes (6) of the double-sided fin microchannel are arranged alternately with each other in the middle part between the upper header (1) and the lower header (2), and gaps are maintained between the fins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321980441.3U CN220288355U (en) | 2023-07-26 | 2023-07-26 | Relieved tooth microchannel heat exchanger for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321980441.3U CN220288355U (en) | 2023-07-26 | 2023-07-26 | Relieved tooth microchannel heat exchanger for refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220288355U true CN220288355U (en) | 2024-01-02 |
Family
ID=89342056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321980441.3U Active CN220288355U (en) | 2023-07-26 | 2023-07-26 | Relieved tooth microchannel heat exchanger for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220288355U (en) |
-
2023
- 2023-07-26 CN CN202321980441.3U patent/CN220288355U/en active Active
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