CN210922274U - Heat exchanger - Google Patents

Abstract

The utility model provides a heat exchanger, include: the flat tubes are arranged at intervals and provided with inlet parts and outlet parts, and the inlet parts and the outlet parts are both positioned at the first ends of the flat tubes; the first sealing cushion block is arranged between two adjacent flat pipes; a flow collecting part having a first opening part disposed opposite to the inlet part and a second opening part disposed opposite to the outlet part; wherein, first seal cushion includes first sealing and second sealing, and first sealing is used for setting up between the inlet portion of two adjacent flat pipes, and first sealing is used for setting up between the export portion of two adjacent flat pipes, and at least part and the inlet portion of first sealing are all inserted and are established in order to enclose into first mass flow passageway in first opening, and at least part and the export portion of first sealing are all inserted and are established in order to enclose into second mass flow passageway in the second opening. Through the technical scheme provided by the utility model, can solve the not compact enough technical problem of heat exchanger structure among the prior art.

Description

Heat exchanger

Technical Field

The utility model relates to a heat exchanger technical field particularly, relates to a heat exchanger.

Background

At present, the heat exchanger among the prior art generally includes circular pressure manifold and a plurality of flat pipe, is provided with a plurality of spliced eyes on the circular pressure manifold, and a plurality of flat pipes set up with a plurality of spliced eyes one-to-one, and each flat pipe is inserted and is established in corresponding spliced eye, welds afterwards.

In the welding process, the flat pipe is rigidly restrained by the inserting holes of the collecting pipes, and even if the flat pipe is subjected to the pretightening force of the clamp, the flat pipe is hardly displaced in the height direction, particularly the flat pipe close to the end parts of the collecting pipes. Because during the welding, the back can be melted to the surperficial composite bed of flat pipe, and the part solder joint that is close to the spliced eye of pressure manifold will be difficult to the seam, forms the rosin joint easily, influences the resistance to pressure of product.

Meanwhile, an inlet and an outlet in the prior art are respectively positioned at two ends of the flat pipe, and the two ends of the flat pipe need to be welded, so that the workload is increased, the structure is not compact enough, and the space utilization rate is low.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a heat exchanger to solve the technical problem of the prior art that the structure of the heat exchanger is not compact enough.

In order to achieve the above object, the utility model provides a heat exchanger, include: the flat tubes are arranged at intervals and provided with inlet parts and outlet parts, the inlet parts and the outlet parts are both positioned at the first ends of the flat tubes, and the inlet parts and the outlet parts are arranged at intervals; the first sealing cushion block is arranged between two adjacent flat pipes and is positioned at the first end of the flat pipe so as to seal a gap between the two adjacent flat pipes through the first sealing cushion block; a flow collecting part having a first opening part disposed opposite to the inlet part and a second opening part disposed opposite to the outlet part; wherein, first seal cushion includes first sealing and second sealing, and first sealing is used for setting up between the inlet portion of two adjacent flat pipes, and the second sealing is used for setting up between the export portion of two adjacent flat pipes, and at least part and the inlet portion of first sealing are all inserted and are established in order to enclose into first mass flow passageway in the first opening, and at least part and the export portion of second sealing are all inserted and are established in order to enclose into second mass flow passageway in the second opening.

Further, the flow collecting part comprises a first flow collecting shell, the first flow collecting shell comprises a first main body part and a first inserting part, the first inserting part is arranged on the first main body part and is positioned at the end part of the first main body part, the first inserting part is provided with a first opening part, and at least part of the first sealing part and the inlet part are inserted into the first inserting part.

Further, the current collecting portion includes a second current collecting case including a second main body portion and a second insertion portion provided on the second main body portion, the second insertion portion being located at an end portion of the second main body portion, the second insertion portion having a second opening portion, at least a portion of the second sealing portion and the outlet portion being inserted at the second insertion portion.

Further, the first plug part comprises a first plug plate and a second plug plate, the first plug plate and the second plug plate are oppositely arranged at two ends of the first main body part, the first plug plate and the second plug plate are arranged at intervals to form a first opening part, so that at least part of the first sealing part and the inlet part are plugged between the first plug plate and the second plug plate.

Further, in an extending direction from the first main body portion to the first inserting portion, a distance between the first inserting plate and the second inserting plate is gradually reduced.

Further, the first sealing portion comprises a first main body block and a first inserting block, the first inserting block is arranged on the first main body block, the first main body block is arranged at the first end of the flat pipe, and the first inserting block is inserted into the first opening portion.

Furthermore, the first plug-in block has first side, second side and first arc concave surface, and first side, first arc concave surface and second side connect gradually the setting, and first arc concave surface is located one side that first plug-in block kept away from first main part piece, and first side is used for inserting and establishes in first plugboard department, and the second side is used for inserting and establishes in second plugboard department.

Further, the heat exchanger still includes first location structure and with first location structure complex second location structure, first location structure sets up on first seal cushion, the second location structure sets up on the first end of flat pipe, first location structure sets up with second location structure relatively to fix a position first seal cushion through the cooperation of first location structure and second location structure.

Furthermore, the first positioning structure is a first positioning protrusion, the second positioning structure is a first positioning groove, the first positioning protrusion and the first positioning groove are arranged oppositely, and the first positioning protrusion is arranged in the first positioning groove to position the first sealing cushion block.

Further, first seal cushion has relative first binding face and the second binding face that sets up, and the first end of flat pipe has relative first surface and the second surface that sets up, and the first surface cooperation of first binding face and flat pipe sets up, and the second binding face sets up with the second surface cooperation of flat pipe to make first binding face laminating first surface setting, second binding face laminating second surface setting.

Furthermore, the collecting part is also provided with a third opening and a fourth opening which are oppositely arranged, and the collecting part and the flow direction of the fluid in the flat pipe form a preset angle along the extending direction from the third opening to the fourth opening; the heat exchanger further comprises a sealing cover, and the third opening and the fourth opening are provided with sealing covers so as to seal the third opening and the fourth opening through the sealing covers.

Further, the heat exchanger still includes second seal cushion, and second seal cushion sets up between sealed lid and flat pipe, and the one end that second seal cushion is close to sealed lid is provided with third location structure to fix a position sealed lid through third location structure.

Further, the second sealing cushion block comprises a third sealing part and a fourth sealing part, the third sealing part and the fourth sealing part are arranged in a connected mode, the third sealing part is used for being arranged at the inlet part, and the fourth sealing part is used for being arranged at the outlet part; the third positioning structure comprises a first positioning step, the third sealing part comprises a third main body block and a third inserting block, the third inserting block is arranged on the third main body block, and the third main body block protrudes out of the third inserting block to form a first positioning step, so that the sealing cover is positioned through the first positioning step; and/or the third positioning structure comprises a second positioning step, the fourth sealing part comprises a fourth main body block and a fourth inserting block, the fourth inserting block is arranged on the fourth main body block, and the fourth main body block protrudes out of the fourth inserting block to form the second positioning step in a surrounding mode so as to seal the sealing cover through the second positioning step.

Furthermore, a fourth positioning structure is further arranged on the flat pipe, a fifth positioning structure matched with the fourth positioning structure is further arranged on the second sealing cushion block, and the fourth positioning structure and the fifth positioning structure are arranged oppositely to position the second sealing cushion block through the fourth positioning structure and the fifth positioning structure.

Furthermore, the fourth positioning structure is a second positioning protrusion, the fifth positioning structure is a second positioning groove, the second positioning protrusion is opposite to the second positioning groove, and the second positioning protrusion is arranged in the second positioning groove to position the second sealing part.

Further, the flat pipe is provided with a fluid channel which is of a U-shaped structure.

Use the technical scheme of the utility model, all set up the same one end at flat pipe through import portion and the export department with flat pipe, like this, only need be provided with first seal cushion in the one end department of flat pipe can. At least part through with first sealing and the entrance point of flat pipe all insert and establish the mass flow passageway that can enclose into the import side in first opening, all insert the at least part through with the second sealing and the entrance point of flat pipe and establish the mass flow passageway that can enclose into the outlet side in the second opening for the mass flow passageway of import side and the mass flow passageway of outlet side are located flat pipe same end, are convenient for improve overall structure's compactness. Therefore, through the utility model provides a technical scheme can solve the not compact enough technical problem of heat exchanger structure among the prior art.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows an exploded view of a heat exchanger provided in accordance with an embodiment of the present invention;

fig. 2 shows a schematic structural diagram of a flat tube of a heat exchanger provided according to an embodiment of the present invention;

fig. 3 shows a front view of a flat tube of a heat exchanger provided according to an embodiment of the present invention;

FIG. 4 shows a view from the direction A-A in FIG. 3;

fig. 5 shows a schematic structural view of a first seal cushion block provided according to an embodiment of the present invention;

fig. 6 shows a schematic structural view of a second seal cushion block provided according to an embodiment of the present invention;

fig. 7 illustrates a front view of a heat exchanger provided in accordance with an embodiment of the present invention;

FIG. 8 shows a view along B-B in FIG. 7;

fig. 9 shows a schematic structural diagram of a heat exchanger provided according to an embodiment of the present invention;

fig. 10 shows a schematic structural diagram of a flat tube of a heat exchanger according to a second embodiment of the present invention;

fig. 11 shows a schematic structural diagram of a flat tube of a heat exchanger provided according to an embodiment of the present invention; and

fig. 12 shows a schematic structural diagram of a flat tube of a heat exchanger according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. flat tubes; 11. an inlet section; 12. an outlet portion; 13. a second positioning structure; 20. a first seal cushion block; 21. a first seal portion; 211. a first main body block; 212. a first plug-in block; 22. a second seal portion; 221. a second main body block; 222. a second insertion block; 23. a first positioning structure; 31. a first manifold housing; 32. a second current collecting housing; 40. a second seal cushion block; 41. a third seal portion; 411. a third main body block; 412. a third plug-in block; 42. a fourth seal portion; 421. a fourth main body block; 422. a fourth plug-in block; 43. a fifth positioning structure; 50. a side plate; 60. heat exchange fins; 70. a connecting pipe; 80. and (7) sealing the cover.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 9, an embodiment of the present invention provides a heat exchanger, which includes a plurality of flat tubes 10, a first gasket 20 and a collecting portion, where the flat tubes 10 are arranged at intervals, the flat tubes 10 have an inlet portion 11 and an outlet portion 12, the inlet portion 11 and the outlet portion 12 are both located at a first end of the flat tubes 10, and the inlet portion 11 and the outlet portion 12 are arranged at intervals; first packing block 20 sets up between two adjacent flat pipes 10, and first packing block 20 is located flat pipe 10's first end department to seal the clearance between two adjacent flat pipes 10 through first packing block 20. The collecting portion has a first opening portion disposed opposite the inlet portion 11 and a second opening portion disposed opposite the outlet portion 12. The first seal cushion block 20 comprises a first seal portion 21 and a second seal portion 22, the first seal portion 21 is arranged between the inlet portions 11 of two adjacent flat tubes 10, the second seal portion 22 is arranged between the outlet portions 12 of two adjacent flat tubes 10, at least part of the first seal portion 21 and the inlet portions 11 are inserted into the first opening portion to form a first flow collecting channel, and at least part of the second seal portion 22 and the outlet portions 12 are inserted into the second opening portion to form a second flow collecting channel.

Adopt the technical scheme that this embodiment provided, all set up same one end at flat pipe 10 through inlet portion 11 with export portion 12 with flat pipe 10, like this, only need be provided with first packing block 20 in the one end department of flat pipe 10. Through all inserting the inlet end of at least part and flat pipe 10 with first sealing 21 and establishing and can enclose into the mass flow passageway of import side in first opening, through all inserting the mass flow passageway that can enclose into the outlet side in the second opening with at least part and the exit end of flat pipe 10 of second sealing 22, like this for the mass flow passageway of import side and the mass flow passageway of outlet side are located flat pipe 10's same end, are convenient for improve overall structure's compactness.

Simultaneously, when welding, flat pipe 10 can not receive the restraint in the direction of height, and is concrete, when the heat exchanger crosses the stove welding, flat pipe 10 can freely carry out the lamination under the pretension effect of anchor clamps, melts the back when flat pipe 10 surface composite bed, can make two tube sheets of flat pipe 10 remain the laminating of pressurized throughout to guarantee that whole solder joints on the tube sheet can be welded together, improved the joint strength of mass flow portion with flat pipe 10, ensured the resistance to pressure of product.

Specifically, the current collecting portion in the present embodiment includes a first current collecting case 31, the first current collecting case 31 includes a first main body portion and a first mating portion, the first mating portion is provided on the first main body portion, the first mating portion is located at an end portion of the first main body portion, the first mating portion has a first opening portion, and at least a portion of the first sealing portion 21 and the inlet portion 11 are mated at the first mating portion. Specifically, the first main body portion and the first inserting portion in this embodiment may be integrally formed to improve the structural strength. The first body portion may be an arc-shaped case so as to define a collecting channel on the inlet side, and the first collecting case 31 may have a C-shaped open case structure.

The header portion in this embodiment further includes a second header body 32, the second header body 32 including a second main body portion and a second socket portion provided on the second main body portion at an end thereof, the second socket portion having a second opening portion at which at least a portion of the second sealing portion 22 and the outlet portion 12 are both plugged. The first collecting body 31 may be connected to the second collecting body 32, or the first collecting body 31 may be separate from the second collecting body 32. In the present embodiment, the first collecting body 31 is provided separately from the second collecting body, in order to facilitate production and manufacture. Specifically, the second main body portion and the second insertion portion in this embodiment may be integrally formed to improve the structural strength. The second body portion may be an arc-shaped housing so as to define a flow collection passage on the outlet side, and the second flow collection housing 32 may be a C-shaped open housing structure.

Specifically, the first insertion portion includes a first insertion plate and a second insertion plate, the first insertion plate and the second insertion plate are disposed at two ends of the first main body portion, and the first insertion plate and the second insertion plate are disposed at an interval to form a first opening portion, so that at least a portion of the first sealing portion 21 and the inlet portion 11 are inserted between the first insertion plate and the second insertion plate. With this arrangement, the stability of connection between the first sealing portion 21 and the inlet ends of the flat tubes 10 and the first collecting case 31 can be further improved, and the first sealing portion 21 and the inlet portions 11 of the flat tubes 10 and the first collecting case 31 can be prevented from coming off before welding. Specifically, the first insertion plate and the second insertion plate can also be arranged in parallel. Or the spacing distance between the first and second plugboards decreases gradually in the direction of extension of the body portion to the plug portion, so as to better improve the stability of the plug connection and to better improve the stability of the connection of the first sealing portion 21, the inlet portion 11 and the first collecting housing 31.

Specifically, the second insertion portion includes a third insertion plate and a fourth insertion plate, the third insertion plate and the fourth insertion plate are disposed at two ends of the second main body portion, and the third insertion plate and the fourth insertion plate are disposed at an interval to form a second opening portion, so that at least a portion of the second sealing portion 22 and the outlet portion 12 are inserted between the third insertion plate and the fourth insertion plate. With this arrangement, the stability of connection between the second seal portion 22 and the outlet portion 12 of the flat tube 10 and the second collecting case 32 can be further improved, and the second seal portion 22 and the outlet portion 12 of the flat tube 10 and the second collecting case 32 can be prevented from coming off before welding.

Specifically, the first sealing portion 21 in this embodiment includes a first main body block 211 and a first insertion block 212, the first insertion block 212 is disposed on the first main body block 211, the first main body block 211 is disposed at the first end of the flat tube 10, and the first insertion block 212 is inserted into the first opening portion. With this arrangement, the gap between two adjacent flat tubes 10 can be sealed by the first body block 211, and the first insertion block 212 can be inserted into the first opening portion so as to form a flow collecting channel on the inlet side. In this embodiment, the first body block 211 and the first insertion block 212 may be an integrally formed structure. Specifically, the first seal portion 21 in this embodiment may be a T-shaped block, the T-shaped block may be inserted into the opening side of the C-shaped manifold housing, the inner wall of the end portion of the C-shaped manifold housing may be engaged with the outer wall of the T-shaped block, and the first seal packing 20, the first manifold housing 31, and the flat tube 10 may be integrated by brazing. According to the actual situation, a plurality of first seal packing blocks 20 arranged in a stacked manner may be arranged between two adjacent flat tubes 10. The second sealing portion 22 has the same structure as the first sealing portion 21.

Specifically, the second sealing portion 22 in this embodiment includes a second main body block 221 and a second insertion block 222, the second insertion block 222 is disposed on the second main body block 221, the second main body block 221 is disposed at the first end of the flat tube 10, and the second insertion block 222 is inserted into the first opening portion. The second sealing part 22 may have a structure similar to that of the first sealing part 21.

Specifically, the first plug block 212 in this embodiment has a first side surface, a second side surface and a first arc-shaped concave surface, the first side surface, the first arc-shaped concave surface and the second side surface are sequentially connected, the first arc-shaped concave surface is located on one side of the first plug block 212, which is away from the first main body block 211, the first side surface is used for being inserted into the first plug board, and the second side surface is used for being inserted into the second plug board. By adopting the arrangement, better splicing can be facilitated, so that the connection stability is improved. Meanwhile, the first arc-shaped concave surface is arranged between the first side surface and the second side surface, so that the blocking effect of the first plug-in block 212 on the flow of the fluid in the first collecting shell 31 can be reduced, the flow sectional area in the first collecting shell 31 is increased, and the flow speed of the fluid is improved.

Specifically, the heat exchanger in this embodiment further includes first location structure 23 and second location structure 13 with first location structure 23 complex, and first location structure 23 sets up on first seal cushion 20, and second location structure 13 sets up on the first end of flat pipe 10, and first location structure 23 sets up with second location structure 13 relatively to fix a position first seal cushion 20 through the cooperation of first location structure 23 and second location structure 13, improve the stability of location. Specifically, the first positioning structure 23 is disposed on each of the first sealing portion 21 and the second sealing portion 22, so as to further improve the stability of the arrangement.

Specifically, the first positioning structure 23 in this embodiment is a first positioning protrusion, the second positioning structure 13 is a first positioning groove, the first positioning protrusion and the first positioning groove are oppositely disposed, and the first positioning protrusion is disposed in the first positioning groove to position the first seal cushion 20.

In this embodiment, first gasket 20 has first binding face and the second binding face of relative setting, and the first end of flat pipe 10 has first surface and the second surface of relative setting, and the cooperation of the first surface of first binding face and flat pipe 10 sets up, and the cooperation of the second surface of second binding face and flat pipe 10 sets up to make the first surface setting of first binding face laminating, the setting of the second binding face laminating second surface. Specifically, the first gasket 20 has a first abutting surface and a second abutting surface that are arranged opposite to each other in the flow direction of the fluid in the first manifold housing 31. With such an arrangement, the gap between two adjacent flat tubes 10 can be better sealed by the first packing gasket 20, so as to prevent the fluid from leaking out from the gap between the first packing gasket 20 and the flat tube 10.

Specifically, in this embodiment, the first surface may be a first arc-shaped convex surface, the second surface may be a second arc-shaped convex surface, the first attachment surface may be a first arc-shaped concave surface, and the second attachment surface may be a second arc-shaped concave surface. First arc concave surface subsides are established on first arc convex surface, and second arc concave surface subsides are established on second arc convex surface to first seal cushion 20 seals the clearance between two adjacent flat pipes 10 better, has further improved sealed effect.

Specifically, the collecting portion in this embodiment further has a third opening and a fourth opening that are disposed opposite to each other, and the third opening and the fourth opening are disposed at a preset angle with respect to a flowing direction of the fluid in the flat tube 10 along an extending direction of the third opening to the fourth opening. The heat exchanger still includes sealed lid 80, and third opening and fourth opening department all are provided with sealed lid 80 to seal third opening and fourth opening through sealed lid 80, improve sealing performance.

In this embodiment, the heat exchanger further includes a second seal cushion block 40, the second seal cushion block 40 is disposed between the seal cover 80 and the flat pipe 10, and a third positioning structure is disposed at an end of the second seal cushion block 40 close to the seal cover 80, so as to position the seal cover 80 through the third positioning structure. With such an arrangement, the stability of the arrangement can be improved.

Specifically, the second sealing pad 40 includes a third sealing portion 41 and a fourth sealing portion 42, the third sealing portion 41 and the fourth sealing portion 42 are connected, the third sealing portion 41 is configured to be disposed at the inlet portion 11, and the fourth sealing portion 42 is configured to be disposed at the outlet portion 12.

Specifically, the third positioning structure includes a first positioning step, the third sealing portion 41 includes a third main body block 411 and a third insertion block 412, the third insertion block 412 is disposed on the third main body block 411, and the third main body block 411 protrudes from the third insertion block 412 to form the first positioning step, so as to position the sealing cover 80 by the first positioning step. Alternatively, the third positioning structure includes a second positioning step, the fourth sealing portion 42 includes a fourth main body block 421 and a fourth insertion block 422, the fourth insertion block 422 is disposed on the fourth main body block 421, and the fourth main body block 421 protrudes from the fourth insertion block 422 to form the second positioning step, so as to seal the sealing cover 80 by the second positioning step. Or, the third positioning structure includes a first positioning step and a second positioning step, the third sealing portion 41 includes a third main body block 411 and a third insertion block 412, the third insertion block 412 is disposed on the third main body block 411, the third main body block 411 protrudes out of the third insertion block 412 to form the first positioning step, so as to position the sealing cover 80 through the first positioning step, the fourth sealing portion 42 includes a fourth main body block 421 and a fourth insertion block 422, the fourth insertion block 422 is disposed on the fourth main body block 421, and the fourth main body block 421 protrudes out of the fourth insertion block 422 to form the second positioning step, so as to seal the sealing cover 80 through the second positioning step.

In this embodiment, a fourth positioning structure is further disposed on the flat pipe 10, a fifth positioning structure 43 matched with the fourth positioning structure is further disposed on the second seal cushion block 40, and the fourth positioning structure and the fifth positioning structure 43 are disposed oppositely, so that the second seal cushion block 40 is positioned by the fourth positioning structure and the fifth positioning structure 43. By adopting the arrangement, the second seal cushion block 40 can be conveniently positioned through the matching of the fourth positioning structure and the fifth positioning structure 43, the situation that the second seal cushion block 40 moves relative to the flat pipe 10 is avoided, and the stability of the arrangement of the second seal cushion block 40 is improved.

Specifically, the fourth positioning structure in this embodiment is a second positioning protrusion, the fifth positioning structure 43 is a second positioning groove, the second positioning protrusion and the second positioning groove are oppositely disposed, and the second positioning protrusion is disposed in the second positioning groove to position the second sealing portion 22. With such an arrangement, the stability of the arrangement can be further improved.

Specifically, the flat tube 10 in this embodiment has a fluid channel, and the fluid channel is U-shaped, so that the inlet portion 11 and the opening portion are located at the same end of the flat tube 10.

Specifically, an arc-shaped port may be disposed at an end of the flat tube 10, the arc-shaped port is inserted into the first opening portion, and the arc-shaped port is communicated with a fluid channel in the flat tube 10, so that the flow collecting channel is communicated with the fluid channel in the flat tube 10. With this arrangement, the flow cross-sectional area in the header housing can be increased.

In the present embodiment, the collecting portion, the flat tube 10 and the first gasket 20 are welded to form a collecting channel, so that the collecting housing, the flat tube 10 and the first gasket 20 form an integral structure.

In this embodiment, the heat exchanger further includes heat exchange fins 60, side plates 50, and a connection pipe 70, where the heat exchange fins 60 are disposed on the flat pipes 10, the side plates 50 are located at the end of the heat exchanger, and the connection pipe 70 is used for communicating with the collecting channel.

The second embodiment of the invention provides a heat exchanger, and the difference between the heat exchanger in the second embodiment and the heat exchanger in the first embodiment is the difference of the structures of the flat tubes 10. The flat tube 10 structure of the heat exchanger in the second embodiment is shown in fig. 10.

The third embodiment of the invention provides a heat exchanger, and the difference between the heat exchanger in the third embodiment and the heat exchanger in the first embodiment is that the flat pipe 10 is different in structure. The flat tube 10 structure of the heat exchanger in the third embodiment is shown in fig. 11.

The fourth embodiment of the invention provides a heat exchanger, and the difference between the heat exchanger in the fourth embodiment and the heat exchanger in the first embodiment is the difference of the structure of the flat pipe 10. The flat tube 10 structure of the heat exchanger in the fourth embodiment is shown in fig. 12.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the connection strength of the collecting shell and the flat tube is improved, the pressure resistance of the heat exchanger is improved, the flow area in the collecting shell is increased, the flow resistance in the collecting channel is reduced, and the influence on the performance of a refrigerating system is reduced; the inlet part and the outlet part are positioned at the same end, so that the installation and the welding are convenient, the using amount of the sealing block is reduced, and the cost is reduced; the structure is more compact, the temperature fields of the front row and the rear row of the fin side are more uniform, and compared with two parallel heat exchangers, the heat exchange capacity and the heat exchange efficiency are improved and the unit space is saved under the condition of the same windward area; the heat exchange tube is internally provided with a U-shaped channel, the refrigerant flows through a U-shaped loop in the flat tube, the width of two runners of the U-shaped loop is adjustable, and the width of the inlet runner and the width of the outlet runner can be equal or unequal (preferably unequal). When the evaporator is used, liquid at an inlet part has multiple narrow flow channels, and gas at an outlet part has multiple wide flow channels; when the condenser is used as a condenser, the gas multi-flow channel of the inlet part is wide, the liquid multi-flow channel of the outlet part is narrow, and the pressure drop of the liquid side and the gas side in a refrigerant loop is optimized by adjusting the width of the flow channel of the inlet part and the width of the flow channel of the outlet part, so that the effect of reducing the total pressure drop is achieved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (15)

1. A heat exchanger, comprising:

the flat pipe (10), the flat pipe (10) is multiple, the flat pipes (10) are arranged at intervals, the flat pipe (10) is provided with an inlet part (11) and an outlet part (12), the inlet part (11) and the outlet part (12) are both positioned at a first end of the flat pipe (10), and the inlet part (11) and the outlet part (12) are arranged at intervals;

the first sealing cushion block (20) is arranged between two adjacent flat pipes (10), and the first sealing cushion block (20) is positioned at the first end of each flat pipe (10) so as to seal a gap between two adjacent flat pipes (10) through the first sealing cushion block (20);

a flow collection portion having a first opening portion disposed opposite the inlet portion (11) and a second opening portion disposed opposite the outlet portion (12);

the first sealing cushion block (20) comprises a first sealing portion (21) and a second sealing portion (22), the first sealing portion (21) is used for being arranged between inlet portions (11) of two adjacent flat pipes (10), the second sealing portion (22) is used for being arranged between outlet portions (12) of two adjacent flat pipes (10), at least part of the first sealing portion (21) and the inlet portions (11) are inserted into the first opening portion to form a first flow collecting channel in a surrounding mode, and at least part of the second sealing portion (22) and the outlet portions (12) are inserted into the second opening portion to form a second flow collecting channel in a surrounding mode.

2. A heat exchanger according to claim 1, characterised in that the collecting portion comprises a first collecting body (31), the first collecting body (31) comprising a first body portion and a first plug-in portion provided on the first body portion at an end thereof, the first plug-in portion having the first opening portion, at least part of the first sealing portion (21) and the inlet portion (11) being plugged at the first plug-in portion.

3. The heat exchanger of claim 1, wherein the header portion comprises a second header body (32), the second header body (32) comprising a second body portion and a second plug portion disposed on the second body portion at an end of the second body portion, the second plug portion having the second opening portion, at least a portion of the second seal portion (22) and the outlet portion (12) being plugged at the second plug portion.

4. The heat exchanger according to claim 2, wherein the first socket part comprises a first socket plate and a second socket plate, the first socket plate and the second socket plate being oppositely disposed at both ends of the first body part, the first socket plate and the second socket plate being spaced apart to form the first opening part, such that at least a portion of the first sealing part (21) and the inlet part (11) are both plugged between the first socket plate and the second socket plate.

5. The heat exchanger according to claim 4, wherein the first seal portion (21) includes a first body block (211) and a first insert block (212), the first insert block (212) being provided on the first body block (211), the first body block (211) being provided at a first end of the flat tube (10), the first insert block (212) being inserted in the first opening portion.

6. The heat exchanger according to claim 5, wherein the first plug block (212) has a first side surface, a second side surface and a first arc-shaped concave surface, the first side surface, the first arc-shaped concave surface and the second side surface are sequentially connected, the first arc-shaped concave surface is located on one side of the first plug block (212) away from the first main body block (211), the first side surface is used for being plugged at the first plug board, and the second side surface is used for being plugged at the second plug board.

7. The heat exchanger according to claim 1, further comprising a first positioning structure (23) and a second positioning structure (13) engaged with the first positioning structure (23), wherein the first positioning structure (23) is disposed on the first gasket (20), the second positioning structure (13) is disposed on the first end of the flat tube (10), and the first positioning structure (23) is disposed opposite to the second positioning structure (13) to position the first gasket (20) by engagement of the first positioning structure (23) and the second positioning structure (13).

8. The heat exchanger according to claim 7, wherein the first positioning structure (23) is a first positioning protrusion, and the second positioning structure (13) is a first positioning groove, the first positioning protrusion being disposed opposite to the first positioning groove, and the first positioning protrusion being disposed in the first positioning groove to position the first sealing gasket (20).

9. The heat exchanger according to claim 1, wherein the first seal packing block (20) has a first abutting surface and a second abutting surface which are oppositely arranged, the first end of the flat tube (10) has a first surface and a second surface which are oppositely arranged, the first abutting surface is arranged to cooperate with the first surface of the flat tube (10), and the second abutting surface is arranged to cooperate with the second surface of the flat tube (10), so that the first abutting surface abuts against the first surface and the second abutting surface abuts against the second surface.

10. The heat exchanger according to claim 1, wherein the collecting portion further has a third opening and a fourth opening which are oppositely arranged, and the third opening and the fourth opening are arranged at a preset angle with the flowing direction of the fluid in the flat tube (10) along the extending direction of the third opening and the fourth opening; the heat exchanger further comprises a sealing cover (80), wherein the sealing cover (80) is arranged at the third opening and the fourth opening, so that the third opening and the fourth opening are sealed through the sealing cover (80).

11. The heat exchanger according to claim 10, further comprising a second sealing gasket (40), wherein the second sealing gasket (40) is disposed between the sealing cover (80) and the flat tube (10), and one end of the second sealing gasket (40) close to the sealing cover (80) is provided with a third positioning structure, so that the sealing cover (80) is positioned by the third positioning structure.

12. The heat exchanger according to claim 11, wherein the second sealing pad (40) comprises a third sealing portion (41) and a fourth sealing portion (42), the third sealing portion (41) and the fourth sealing portion (42) being arranged in connection, the third sealing portion (41) being adapted to be arranged at the inlet portion (11) and the fourth sealing portion (42) being adapted to be arranged at the outlet portion (12);

the third positioning structure comprises a first positioning step, the third sealing part (41) comprises a third main body block (411) and a third insertion block (412), the third insertion block (412) is arranged on the third main body block (411), and the third main body block (411) protrudes out of the third insertion block (412) to form the first positioning step so as to position the sealing cover (80) through the first positioning step; and/or the presence of a gas in the gas,

the third positioning structure comprises a second positioning step, the fourth sealing portion (42) comprises a fourth main body block (421) and a fourth insertion block (422), the fourth insertion block (422) is arranged on the fourth main body block (421), and the fourth main body block (421) protrudes out of the fourth insertion block (422) to surround the second positioning step so as to seal the sealing cover (80) through the second positioning step.

13. The heat exchanger according to claim 11, characterized in that the flat tube (10) is further provided with a fourth positioning structure, the second gasket (40) is further provided with a fifth positioning structure matched with the fourth positioning structure, and the fourth positioning structure is opposite to the fifth positioning structure so as to position the second gasket (40) through the fourth positioning structure and the fifth positioning structure.

14. The heat exchanger according to claim 13, wherein the fourth positioning structure is a second positioning projection, and the fifth positioning structure is a second positioning groove, the second positioning projection being disposed opposite to the second positioning groove, the second positioning projection being disposed in the second positioning groove to position the second seal portion (22).

15. The heat exchanger according to one of claims 1 to 14, characterized in that the flat tubes (10) have a fluid channel which is a U-shaped channel.

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