CN109269341A - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- CN109269341A CN109269341A CN201710579308.XA CN201710579308A CN109269341A CN 109269341 A CN109269341 A CN 109269341A CN 201710579308 A CN201710579308 A CN 201710579308A CN 109269341 A CN109269341 A CN 109269341A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- exchanger fin
- fin
- flat tube
- straight pipe
- 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
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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
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/002—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using inserts or attachments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F11/00—Arrangements for sealing leaky tubes and conduits
- F28F11/02—Arrangements for sealing leaky tubes and conduits using obturating elements, e.g. washers, inserted and operated independently of each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
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- 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 present invention provides a kind of heat exchangers for connecting plate.The heat exchanger includes multiple flat tubes (1) being intervally arranged in the width direction, flat tube (1) includes the first straight pipe (2) and the second straight pipe (3) positioned at both ends, and it is connected to the bend loss (4) between the first straight pipe (2) and the second straight pipe (3), it is respectively arranged with the first heat exchanger fin (5) between adjacent the first straight pipe (2) and between adjacent the second straight pipe (3), the second heat exchanger fin (6) that current potential is lower than flat tube (1) is provided at bend loss (4).The problem of heat exchanger according to the present invention, the bending position that can solve heat exchanger in the prior art easily corrode, and reduce the overall corrosion resistance energy of heat exchanger.
Description
Technical field
The present invention relates to air-conditioning technical fields, more particularly to a kind of heat exchanger.
Background technique
A kind of heat exchanger is disclosed in the Chinese patent application of Publication No. CN1107221A, which includes
The more flat tubes that through-thickness is mutually arranged side by side at certain intervals, and configuration connect at the both ends of above-mentioned pipe and the end of pipe
Logical a pair of of hollow manifold, above-mentioned Guan Youyi its longitudinal suitable position along pipe width direction by curved bending section
Point, meanwhile, which will also reverse the bending part of predetermined angular, and configuration relative to the straight-tube portion of its two sides in phase
The mutual cooling fin of adjacent straight-tube portion.
This kind of structure solves the problems, such as dual-row heat exchanger bending, but since the torsion of bending part flat tube is turn 90 degrees, torsional zones
Domain has a changeover portion, and the changeover portion is caused to have compared with big gap, is easy to leak out, influences heat exchange property, simultaneously because bending part
Flat tube between there is no fin protection, flat tube starts to corrode at first, and other have the place of fin since fin current potential is lower than flat
Pipe, therefore be to allow fin first to corrode by the way of sacrificing fin protection flat tube, therefore this configuration reduces the entirety of heat exchanger
Corrosion resistance.
Summary of the invention
The object of the present invention is to provide a kind of heat exchangers, are easy corruption to solve the bending position of heat exchanger in the prior art
The problem of losing, reducing the overall corrosion resistance energy of heat exchanger.
In order to solve the above technical problems, providing a kind of heat exchanger, including multiple along width as one aspect of the present invention
The flat tube that degree direction is intervally arranged, flat tube includes the first straight pipe and the second straight pipe positioned at both ends, and is connected to first
Bend loss between straight pipe and the second straight pipe, between the first adjacent straight pipe and between the second adjacent straight pipe point
It is not provided with the first heat exchanger fin, the second heat exchanger fin that current potential is lower than flat tube is provided at bend loss.
Heat exchanger of the invention is provided with the second heat exchanger fin that current potential is lower than flat tube at the bend pipe fragment position of flat tube,
In heat exchanger use process, in case of corroding, preferential lower second heat exchanger fin of corrosion potential of meeting exchanges heat to pass through second
Piece forms effective protection to flat tube, improves the corrosion resistance of heat exchanger.
Detailed description of the invention
Fig. 1 diagrammatically illustrates the structural schematic diagram before the non-bending of heat exchanger of first embodiment of the invention；
Fig. 2 diagrammatically illustrates the side structure schematic view of Fig. 1；
Fig. 3 diagrammatically illustrates the structural schematic diagram after the heat exchanger bending of first embodiment of the invention；
Fig. 4 diagrammatically illustrates the side structure schematic view of Fig. 3；
Fig. 5 diagrammatically illustrates the structural schematic diagram before the non-bending of heat exchanger of second embodiment of the invention；
Fig. 6 diagrammatically illustrates the structural schematic diagram before the non-bending of heat exchanger of third embodiment of the invention；
Fig. 7 diagrammatically illustrates the structural schematic diagram before the non-bending of heat exchanger of fourth embodiment of the invention；
Fig. 8 diagrammatically illustrates the structural schematic diagram before the non-bending of heat exchanger of fifth embodiment of the invention；
Fig. 9 diagrammatically illustrates the structural schematic diagram of the second heat exchanger fin of the heat exchanger of fifth embodiment of the invention；
Figure 10 diagrammatically illustrates the structural schematic diagram before the non-bending of heat exchanger of sixth embodiment of the invention；
Figure 11 diagrammatically illustrates the structural schematic diagram of the second heat exchanger fin of the heat exchanger of sixth embodiment of the invention；
Figure 12 diagrammatically illustrates the structural schematic diagram before the non-bending of heat exchanger of seventh embodiment of the invention；
Figure 13 diagrammatically illustrates the structural schematic diagram before the non-bending of heat exchanger of eighth embodiment of the invention；
Figure 14 diagrammatically illustrates the side structure schematic view before the non-bending of heat exchanger of eighth embodiment of the invention；
Figure 15 diagrammatically illustrates the side structure schematic view of the heat exchanger of eighth embodiment of the invention；
Figure 16 diagrammatically illustrates the side structure schematic view before the non-bending of heat exchanger of ninth embodiment of the invention；
Figure 17 diagrammatically illustrates the side structure schematic view of the heat exchanger of ninth embodiment of the invention.
Appended drawing reference in figure: 1, flat tube；2, the first straight pipe；3, the second straight pipe；4, bend loss；5, the first heat exchanger fin；
6, the second heat exchanger fin；7, transition connection portion；8, bending part；9, connecting plate；10, the first U-shaped seat；11, the second U-shaped seat；12, it misplaces
Slot.
Specific embodiment
The embodiment of the present invention is described in detail below, but what the present invention can be defined by the claims and cover
Multitude of different ways is implemented.
It please refers to shown in Fig. 1 to Figure 17, according to an embodiment of the invention, heat exchanger includes multiple interval rows in the width direction
The flat tube 1 of cloth, flat tube 1 includes the first straight pipe 2 and the second straight pipe 3 positioned at both ends, and is connected to 2 He of the first straight pipe
Bend loss 4 between second straight pipe 3 is set respectively between the first adjacent straight pipe 2 and between the second adjacent straight pipe 3
It is equipped with the first heat exchanger fin 5, the second heat exchanger fin 6 that current potential is lower than flat tube 1 is provided at bend loss 4.
Heat exchanger of the invention is provided with the second heat exchanger fin that current potential is lower than flat tube 1 at 4 position of bend loss of flat tube 1
6, in heat exchanger use process, in case of corroding, can preferential lower second heat exchanger fin 6 of corrosion potential, to pass through the
Two heat exchanger fins 6 form effective protection to flat tube 1, improve the corrosion resistance of heat exchanger.
Further, since the bending region of flat tube 1 is provided with the second heat exchanger fin 6, therefore after 1 bending of flat tube, in bending
Bending region is filled by the second heat exchanger fin 6 at region, to improve the heat exchange property of heat exchanger, is reduced simultaneously
The Air Leakage of bending region.
Preferably, width of second heat exchanger fin 6 in the width direction of flat tube 1 is less than the first heat exchanger fin 5 along the width of flat tube 1
The width on direction is spent, so that bending region can use the second heat exchanger fin 6 of narrower width, reduces the second heat exchanger fin 6
Bending area, and then reduce extrusion deformation of the flat tube 1 to the second heat exchanger fin 6, improve the integrally formed effect of heat exchanger.
Preferably, spacing L2 of second heat exchanger fin 6 on the length direction of flat tube 1 is greater than the first heat exchanger fin 5 along flat tube 1
Spacing L1 on length direction reduces the bending difficulty of the second heat exchanger fin 6 so as to reduce the density of the second heat exchanger fin 6, and
And further decrease extrusion deformation of the flat tube 1 to the second heat exchanger fin 6.
Preferably, the second heat exchanger fin 6 includes transition connection portion 7 and bending part 8, and transition connection portion 7 corresponds to the mistake of flat tube 1
Join domain setting is crossed, the bending region that bending part 8 corresponds to flat tube 1 is arranged.Since the bend loss 4 of flat tube 1 divides for transition company
Region and bending region are connect, transitional joint region is the straight tube for being attached with bending region, and bending region is bend pipe, because
This needs to make the second heat exchange to make to realize more good matching relationship between the second heat exchanger fin 6 and the bend loss 4 of flat tube 1
The structure of piece 6 and the structure of the bend loss 4 of flat tube 1 match, so as to better solve after flat tube 1 is bent in bend loss
4 region Air Leakage, while more efficiently solving the problems, such as the perishable damage of bend loss 4.
Preferably, one end of the second heat exchanger fin 6 is connected to the first heat exchanger fin 5 between the first straight pipe 2, the second heat exchanger fin
6 other end is connected to the first heat exchanger fin 5 between the second straight pipe 3, can be on the length direction of entire flat tube 1 to flat tube
1 is protected, and effectively solves 1 bending region Air Leakage of flat tube, while can more efficiently pass through the first heat exchanger fin 5 and the
Two heat exchanger fins 6 prevent 1 corrosion and damage of flat tube, form effective protection to flat tube 1, improve the corrosion resistance of heat exchanger and use the longevity
Life.
Preferably, bending after the first heat exchanger fin 5 and the second heat exchanger fin 6 are integrally formed, can be improved the molding of heat exchanger fin
Efficiency reduces forming cost, lowers molding difficulty.
In conjunction with referring to FIG. 1 to FIG. 4, first embodiment according to the present invention, the first heat exchanger fin 5 and the second heat exchanger fin 6
It is dentation, the part that the second heat exchanger fin 6 is located at bending part 8 is single fin peak.In the present embodiment, the wave at single fin peak
Spacing between high two flat tubes 1 in where it.The part that second heat exchanger fin 6 is located at bending part 8 is single fin peak, knot
Close width of width of second heat exchanger fin 6 in the width direction of flat tube 1 less than the first heat exchanger fin 5 in the width direction of flat tube 1
The feature of degree can more efficiently reduce the extrusion deformation after 1 bending of flat tube to the second heat exchanger fin 6, improve heat exchanger at
Type effect.
It is the heat exchanger of second embodiment of the invention in conjunction with shown in Figure 5, it is essentially identical with first embodiment, no
It is with place, in the present embodiment, the wave height at single fin peak is less than the spacing between two flat tubes 1 where it.
In conjunction with shown in Figure 6, heat exchanger according to a third embodiment of the present invention is essentially identical with first embodiment,
The difference is that in the present embodiment, the first heat exchanger fin 5 and the second heat exchanger fin 6 are dentation, and the second heat exchanger fin 6 is located at curved
The part of folding part 8 is multiple fin peaks.In the present embodiment, each wave height at multiple fin peaks is less than two flat tubes 1 where it
Between spacing.The part that second heat exchanger fin 6 is located at bending part 8 is multiple fin peaks, and each wave height at multiple fin peaks is less than it
Spacing between two flat tubes 1 at place is changed in conjunction with width of second heat exchanger fin 6 in the width direction of flat tube 1 less than first
The feature of width of the backing 5 in the width direction of flat tube 1 exchanges heat after capable of more efficiently reducing 1 bending of flat tube to second
The extrusion deformation of piece 6 improves the molding effect of heat exchanger.
In conjunction with shown in Figure 7, heat exchanger according to a fourth embodiment of the present invention is essentially identical with first embodiment,
The difference is that in the present embodiment, between the maximum wave height at multiple fin peaks is equal between two flat tubes 1 where it
Away from.
In conjunction with referring to shown in Fig. 8 and Fig. 9, fifth embodiment according to the present invention, the second heat exchanger fin 6 includes being located at both ends
Two the first U-shaped seats 10 and the connecting plate 9 being connected between two the first U-shaped seats 10, the first U-shaped seat 10 are mounted on flat tube 1
On, the first U-shaped seat 10 is located at the transitional joint region of flat tube 1, and connecting plate 9 is located at the bending region of flat tube 1.
In the present embodiment, the second heat exchanger fin 6 is mounted on flat tube 1 by U-shaped seat, and two the first U-shaped seats
In the transitional joint region of flat tube 1, connecting plate 9 is located at the bending region of flat tube 1, and connecting plate 9 againsts the setting of flat tube 1, can be with
It is preferential to corrode connecting plate 9 using the current potential of connecting plate 9 feature lower than flat tube 1, effective protection is formed to flat tube 1.Preferably,
Second clad aluminium of heat exchanger fin 6.Second heat exchanger fin 6 can also be made using other current potentials lower than the material of flat tube 1.
In conjunction with referring to shown in Figure 10 and Figure 11, sixth embodiment according to the present invention, the second heat exchanger fin 6 include connecting plate 9,
Two the first U-shaped seats 10 positioned at 9 both ends of connecting plate and the second U-shaped seat 11 for being connect with the first U-shaped seat 10, two the 2nd U
Type seat 11 is arranged in a one-to-one correspondence with two the first U-shaped seats 10 respectively, and the second U-shaped seat 11 is set relative to the first U-shaped dislocation of seat 10
It sets, so as to form the dislocation slot 12 for blocking flat tube 1 between the second U-shaped seat 11 and the first U-shaped seat 10 corresponding to it.Preferably,
Second clad aluminium of heat exchanger fin 6.Second heat exchanger fin 6 can also be made using other current potentials lower than the material of flat tube 1.
In the present embodiment, the second heat exchanger fin 6 is mounted on flat tube 1 using dislocation slot 12, can simplify the second heat exchanger fin 6
Mounting structure on flat tube 1, reduces the processing cost of the second heat exchanger fin 6, while can use dislocation slot 12 reliablely and stablely
It is mounted on flat tube 1.Wherein the second U-shaped seat 11 is relative to the first U-shaped seat 10, the first side plate of the second U-shaped seat 11 and first U-shaped
Form dislocation slot 12 between first side plate of seat 10, the second side plate of the second side plate of the second U-shaped seat 11 and the first U-shaped seat 10 it
Between formed dislocation slot 12.
Preferably, multiple second heat exchanger fins 6 may be combined on the arrangement wind direction of flat tube 1, and two second are changed
The U-shaped seat 10 of the first of backing 6 is correspondingly arranged, and the U-shaped seat 11 of the second of two the second heat exchanger fins 6 is correspondingly arranged.
In conjunction with shown in Figure 12, seventh embodiment according to the present invention, the second heat exchanger fin 6 includes 7 He of transition connection portion
Bending part 8, wherein transition connection portion is corrugated, and bending part 8 is formed by flat plate buckling.In the present embodiment, bending part 8 is no longer
It is set as fin, but is directly formed by flat plate buckling, therefore the bending difficulty of the second heat exchanger fin 6 can be reduced, reduces and adds
Work cost improves production efficiency.
In conjunction with referring to shown in Figure 13 to Figure 15, the 8th embodiment according to the present invention is essentially identical with the 7th embodiment,
The difference is that in the present embodiment, the width of transition connection portion 7 is of same size with the first heat exchanger fin 5, and transition connects
Portion 7 misplaces in the width direction with the first heat exchanger fin 5, and after 6 bending of the second heat exchanger fin, the transition connection portion 7 at 8 both ends of bending part is right
It connects.It, can be along two since two transition connection portions 7 of the second heat exchanger fin 6 misplace in the width direction with the first heat exchanger fin 5
The protrusion direction of a transition connection portion 7 carries out doubling, the heat exchanger after forming bending.After heat exchanger molding, opposite two
Between first heat exchanger fin 5 formed interval, at this time since two transition connection portions 7 are protruded towards each other, can doubling it
Afterwards, docking is formed between two transition connection portions 7, so that heat exchanger position corresponding to transition connection portion 7 after bending
It sets and is sealed, to solve the bending region Air Leakage of heat exchanger, improve the heat exchange efficiency of heat exchanger.
In conjunction with referring to shown in Figure 16 and 17, the 9th embodiment according to the present invention is essentially identical with the 8th embodiment, no
It is with place, in the present embodiment, the first side of transition connection portion 7 is flushed with the first side of the first heat exchanger fin 5, transition connection
The second side in portion 7 protrudes from second side of the first heat exchanger fin 5 in the width direction, so that after 6 bending of the second heat exchanger fin, bending part 8
The transition connection portion 7 at both ends is docked.In the present embodiment, the fin of the fin of transition connection portion 7 and the first heat exchanger fin 5 is along width
Direction and without dislocation, but directly flushes the first side of transition connection portion 7 and the first side of the first heat exchanger fin 5, transition
Second side of interconnecting piece 7 protrudes from second side of the first heat exchanger fin 5 in the width direction, after heat exchanger bending, two protrusions
7 doubling of transition connection portion, and protrude part can extend to by between two the first heat exchanger fins 5 interval setting formed
Area of isolation solve the bending region of heat exchanger so that the protrusion of the fin of transition connection portion 7 partly overlaps after bending
Air Leakage improves the heat exchange efficiency of heat exchanger.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (14)
1. a kind of heat exchanger, which is characterized in that including multiple flat tubes (1) being intervally arranged in the width direction, flat tube (1) packet
The first straight pipe (2) and the second straight pipe (3) positioned at both ends are included, and is connected to first straight pipe (2) and second directly
Bend loss (4) between pipeline section (3), between adjacent first straight pipe (2) and adjacent second straight pipe (3)
Between be respectively arranged with the first heat exchanger fin (5), current potential second changing lower than the flat tube (1) is provided at the bend loss (4)
Backing (6).
2. heat exchanger according to claim 1, which is characterized in that width of second heat exchanger fin (6) along the flat tube (1)
The width spent on direction is less than width of first heat exchanger fin (5) in the width direction of the flat tube (1).
3. heat exchanger according to claim 1, which is characterized in that length of second heat exchanger fin (6) along the flat tube (1)
The spacing spent on direction is greater than spacing of first heat exchanger fin (5) on the length direction of the flat tube (1).
4. heat exchanger according to claim 1, which is characterized in that second heat exchanger fin (6) includes transition connection portion (7)
With bending part (8), the transitional joint region that the transition connection portion (7) corresponds to the flat tube (1) is arranged, the bending part
(8) the bending region corresponding to the flat tube (1) is arranged.
5. heat exchanger according to claim 4, which is characterized in that first heat exchanger fin (5) and second heat exchanger fin
It (6) is dentation, the part that second heat exchanger fin (6) is located at the bending part (8) is single fin peak.
6. heat exchanger according to claim 4, which is characterized in that first heat exchanger fin (5) and second heat exchanger fin
It (6) is dentation, the part that second heat exchanger fin (6) is located at the bending part (8) is multiple fin peaks.
7. heat exchanger according to claim 5 or 6, which is characterized in that the wave height at the fin peak is less than or equal to adjacent
The spacing of two flat tubes (1).
8. heat exchanger according to any one of claim 1 to 6, which is characterized in that one end of second heat exchanger fin (6)
The other end of the first heat exchanger fin (5) being connected between first straight pipe (2), second heat exchanger fin (6) is connected to institute
State the first heat exchanger fin (5) between the second straight pipe (3).
9. heat exchanger according to claim 8, which is characterized in that first heat exchanger fin (5) and second heat exchanger fin
(6) it is integrally formed.
10. heat exchanger according to claim 4, which is characterized in that second heat exchanger fin (6) includes positioned at the two of both ends
A first U-shaped seat (10) and the connecting plate (9) being connected between two first U-shaped seats (10), the first U-shaped seat
(10) it is mounted on the flat tube (1), the first U-shaped seat (10) is located at the transitional joint region of the flat tube (1), the company
Fishplate bar (9) is located at the bending region of the flat tube (1).
11. heat exchanger according to claim 4, which is characterized in that second heat exchanger fin (6) includes connecting plate (9), position
Two the first U-shaped seats (10) in the connecting plate (9) both ends and the second U-shaped seat for being connect with the described first U-shaped seat (10)
(11), two second U-shaped seats (11) are arranged in a one-to-one correspondence with two the first U-shaped seats (10) respectively, and the second U-shaped seat (11)
Shifted to install relative to the described first U-shaped seat (10) so that the second U-shaped seat (11) with its corresponding to it is described first U-shaped
The dislocation slot (12) for blocking the flat tube (1) is formed between seat (10).
12. heat exchanger according to claim 4, which is characterized in that the transition connection portion (7) is corrugated, described curved
Folding part (8) is formed by flat plate buckling.
13. heat exchanger according to claim 12, which is characterized in that the width of the transition connection portion (7) and described the
One heat exchanger fin (5) it is of same size, and the transition connection portion (7) misplaces in the width direction with first heat exchanger fin (5), institute
After stating the second heat exchanger fin (6) bending, the transition connection portion (7) at bending part (8) both ends is docked.
14. heat exchanger according to claim 12, which is characterized in that the first side of the transition connection portion (7) with it is described
First side of the first heat exchanger fin (5) flushes, and second side of the transition connection portion (7) protrudes from described first in the width direction and changes
Second side of backing (5), so that after the second heat exchanger fin (6) bending, the transition connection portion (7) at bending part (8) both ends
Docking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710579308.XA CN109269341B (en) | 2017-07-17 | 2017-07-17 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710579308.XA CN109269341B (en) | 2017-07-17 | 2017-07-17 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109269341A true CN109269341A (en) | 2019-01-25 |
| CN109269341B CN109269341B (en) | 2021-09-28 |
Family
ID=65147808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710579308.XA Active CN109269341B (en) | 2017-07-17 | 2017-07-17 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109269341B (en) |
Cited By (3)
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|---|---|---|---|---|
| WO2021253973A1 (en) * | 2020-06-18 | 2021-12-23 | 浙江盾安人工环境股份有限公司 | Heat exchanger |
| WO2022041250A1 (en) * | 2020-08-31 | 2022-03-03 | 杭州三花微通道换热器有限公司 | Heat exchanger and processing method therefor |
| WO2023237110A1 (en) * | 2022-06-10 | 2023-12-14 | 浙江盾安人工环境股份有限公司 | Fin and heat exchanger provided with same |
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| Publication number | Publication date |
|---|---|
| CN109269341B (en) | 2021-09-28 |
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