CN220339170U - Heat exchange assembly and heat exchanger - Google Patents

Abstract

The utility model discloses a heat exchange assembly and a heat exchanger, wherein the heat exchange assembly at least comprises a current collecting assembly and a plurality of flat tubes, the current collecting assembly is provided with a first refrigerant interface and a second refrigerant interface, one side of the current collecting assembly is provided with a plurality of first connecting grooves communicated with the first refrigerant interface and a plurality of second connecting grooves communicated with the second refrigerant interface, one end of each flat tube is welded and fixed with one of the first connecting grooves, and the other end of each flat tube is welded and fixed with one of the second connecting grooves. The heat exchange assembly and the heat exchanger with the structures only comprise one current collecting assembly, the welding position of the flat tube is half of that of the prior art, and fewer welding spots are used for producing the heat exchanger, so that the heat exchanger is higher in efficiency and lower in production cost, the qualification rate of products in the production process is higher, in addition, the refrigerant continuously flows in the flat tube, heat exchange can be always participated, the utilization rate of the refrigerant is higher, and the heat exchange efficiency of the heat exchanger is higher.

Description

Heat exchange assembly and heat exchanger

Technical Field

The utility model relates to the technical field of heat exchange (cooling), in particular to a heat exchange assembly and a heat exchanger.

Background

The heat exchanger of the prior art generally comprises a pair of oppositely arranged collecting assemblies, and two ends of the flat tube assembly are respectively welded and fixed with the oppositely arranged collecting assemblies. For example, a heat exchanger disclosed in CN217303678U includes a first header assembly and a second header assembly disposed opposite to each other, and a first flat tube assembly and a second flat tube assembly are disposed between the first header assembly and the second header assembly, wherein the first flat tube assembly and the second flat tube assembly include a plurality of flat tubes stacked together. Generally, two ends of the flat tube are fixed with the first current collecting component and the second current collecting component respectively through welding.

The heat exchanger with the structure has the defects that:

(1) The two ends of the flat tube are respectively fixed with the first current collecting assembly and the second current collecting assembly through welding, the welding spots are more, the welding requirement is very high, and the qualification rate is low in production.

(2) The flow direction of the refrigerant is a first refrigerant interface of the first current collecting assembly, the first flat tube assembly, the second current collecting assembly, the second flat tube assembly and a second refrigerant interface of the first current collecting assembly, and in the flowing process of the refrigerant, the refrigerant passes through a connecting cavity in the second current collecting assembly, and does not participate in heat exchange in the connecting cavity, so that the utilization rate of the refrigerant is lower, and the heat exchange efficiency of the heat exchanger is lower.

Disclosure of Invention

The utility model aims to solve the technical problems that in the prior art, the two ends of a flat tube in a heat exchanger are respectively welded with two flow collecting assemblies which are oppositely arranged, so that the technical defects of more welding spots, very high welding requirements, low qualification rate in production, low utilization rate of refrigerant and low heat exchange efficiency of the heat exchanger are caused.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: the utility model provides a heat exchange assembly, includes a mass flow subassembly and at least one deck flat nest of tubes, the mass flow subassembly is provided with first refrigerant interface and second refrigerant interface, every layer flat nest of tubes includes a plurality of flat pipes, the both ends of flat pipe all with mass flow subassembly welded fastening and with first refrigerant interface and second refrigerant interface intercommunication respectively.

In a preferred embodiment, fins are provided in the gaps between adjacent flat tubes.

In a preferred embodiment, the shape of the flat tube includes, but is not limited to, U-shaped, and a plurality of flat tubes are nested from inside to outside.

In a preferred embodiment, the flat tube comprises a pair of parallel segments arranged in parallel, two ends for welding with the header assembly, and a connecting segment connecting the parallel segments.

In a preferred embodiment, the connecting sections of adjacent flat tubes are arranged in a closely adhering or spaced manner.

In a preferred embodiment, two adjacent flat tubes form a flat tube assembly, and the ends of the flat tubes in the flat tube assembly are tightly attached together.

In a preferred embodiment, the flat tube group is provided with a layer, the current collecting assembly is provided with a plurality of first connecting grooves communicated with the first refrigerant interface and a plurality of second connecting grooves communicated with the second refrigerant interface, one end of each flat tube in the flat tube group is welded and fixed with one of the first connecting grooves, and the other end of each flat tube is welded and fixed with one of the second connecting grooves.

The flat tube group is provided with two layers, including upper flat tube group and lower flat tube group, upper flat tube group is provided with upper refrigerant inlet side and upper refrigerant outlet side, lower flat tube group is provided with lower refrigerant inlet side and lower refrigerant outlet side.

In a preferred embodiment, the manifold assembly is provided with a first manifold communicated with the inlet side of the upper-layer refrigerant, a second manifold communicated with the outlet side of the upper-layer refrigerant, a third manifold communicated with the inlet side of the lower-layer refrigerant and a fourth manifold communicated with the outlet side of the lower-layer refrigerant, wherein the third manifold is communicated with a second refrigerant interface, the second manifold is communicated with the first refrigerant interface, and a communication channel is arranged between the first manifold and the fourth manifold.

In a preferred embodiment, a cover plate is covered on one side, far away from the flat tube group, of the first manifold, the second manifold, the third manifold and the fourth manifold, a first opening and a second opening are formed in the cover plate, the second manifold is communicated with a first refrigerant interface through the first opening, and the third manifold is communicated with a second refrigerant interface through the second opening.

In a preferred embodiment, the upper layer refrigerant inlet side and the lower layer refrigerant inlet side are both communicated with the second refrigerant interface, and the upper layer refrigerant outlet side and the lower layer refrigerant outlet side are both communicated with the first refrigerant interface.

The embodiment also discloses a heat exchanger, including at least casing and heat exchange module, the inside of casing is provided with the coolant liquid cavity, collector module with one side fixed connection of casing, flat pipe is located in the coolant liquid cavity, the coolant liquid cavity is provided with first coolant liquid interface and second coolant liquid interface

Compared with the prior art, the heat exchange assembly and the heat exchanger have the following beneficial effects:

(1) In the heat exchange assembly of this embodiment, two ends of the flat tube are welded to the same current collecting assembly, and the refrigerant enters from the first refrigerant interface of the current collecting assembly, flows through the flat tube, flows out from the second refrigerant interface, and forms a primary refrigerant loop, and in the refrigerant loop, two welding positions are arranged between the flat tube and the current collecting assembly.

In the heat exchanger in the prior art, the flow direction of the refrigerant is a first refrigerant interface of a first current collecting assembly, a first flat tube assembly, a second current collecting assembly, a second flat tube assembly and a second refrigerant interface of the first current collecting assembly, and in a primary refrigerant loop, the two flat tubes are respectively welded with the first current collecting assembly and the second current collecting assembly through two flat tubes to form four welding positions.

Obviously, the welding position of the flat tube of the heat exchange assembly of the embodiment is half of that of the prior art, and fewer welding spots are adopted, so that the heat exchanger is produced more efficiently, the production cost is lower, and the qualification rate of products in the production process is higher.

(2) Compared with the connecting cavity of the second collecting assembly, which is needed by the refrigerant in the prior art, in the heat exchange assembly and the heat exchanger, the refrigerant continuously flows in the flat tube, so that the refrigerant can always participate in heat exchange, the utilization rate of the refrigerant is higher, and the heat exchange efficiency of the heat exchanger is higher.

(3) The heat exchanger of the embodiment only comprises one collecting assembly, but the heat exchanger in the prior art comprises two collecting assemblies which are oppositely arranged, the structure of the collecting assemblies is complex, the cost occupies a relatively high level in the whole heat exchanger, and the cost of the heat exchanger is lower due to the fewer collecting assemblies.

Drawings

FIG. 1 is a schematic view showing the external structure of a heat exchanger according to a first embodiment;

FIG. 2 is a schematic view showing an exploded state structure of a heat exchanger according to the first embodiment;

FIG. 3 is a schematic view of a shell in a heat exchanger according to an embodiment;

FIG. 4 is a schematic view of a partial cross-sectional structure of the housing shown in FIG. 3;

FIG. 5 is a schematic view of the heat exchanger of FIG. 1 with the top wall of the housing hidden;

FIG. 6 is a top view of the heat exchanger shown in FIG. 5;

FIG. 7 is a schematic view of a partially cut-away configuration of the heat exchanger of FIG. 1 at a communication chamber;

FIG. 8 is a schematic view of a header assembly in a heat exchanger according to an embodiment;

FIG. 9 is a schematic view of a flat tube structure in a heat exchanger according to the first embodiment;

FIG. 10 is a schematic view showing a structure of a flat tube group formed by two adjacent flat tubes in the heat exchanger according to the first embodiment;

FIG. 11 is a schematic view of another embodiment of a flat tube distribution in a heat exchanger according to example I;

FIG. 12 is a schematic view of the distribution of flat tubes in a heat exchanger according to a second embodiment;

FIG. 13 is a schematic view showing an exploded state structure of a heat exchanger according to a third embodiment;

FIG. 14 is a schematic view showing the distribution of flat tubes in the heat exchanger according to the third embodiment;

fig. 15 is a schematic view showing the internal structure of a header assembly in the heat exchanger according to the third embodiment;

fig. 16 is a schematic view of the current collecting assembly of fig. 15 with the cover plate hidden;

fig. 17 is a schematic view of the structure of the cover plate of the header assembly of fig. 15;

fig. 18 is a schematic view showing the structure of a housing in the heat exchanger according to the third embodiment.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, integrally connected, or detachably connected; may be a communication between the interiors of two elements; may be directly or indirectly through an intermediate medium, and the specific meaning of the terms in the present utility model will be understood by those skilled in the art in specific cases.

Example 1

The heat exchanger of the embodiment, as shown in fig. 1 and 2, comprises a shell 10 and a heat exchange assembly, wherein a cooling liquid chamber is arranged in the shell, the current collecting assembly is fixedly connected with one side of the shell, and the flat tube is positioned in the cooling liquid chamber.

Wherein, the heat exchange assembly comprises a collecting assembly 20 and a layer of flat tube groups in the cooling liquid chamber, and the flat tube groups comprise a plurality of flat tubes 30. As a particular feature of this embodiment, as shown in fig. 8, the collecting assembly 20 is provided with a first refrigerant interface 21, a second refrigerant interface 22, a plurality of first connection grooves 23 communicating with the first refrigerant interface, and a plurality of second connection grooves 24 communicating with the second refrigerant interface 22. One end of each flat tube 30 is welded and fixed with one of the first connecting grooves 23, and the other end of the flat tube 30 is welded and fixed with one of the second connecting grooves 24.

Preferably, in this embodiment, a cooling liquid chamber is disposed inside the casing 10, and specifically in this embodiment, as shown in fig. 3 and 4, the cooling liquid chamber includes a first cooling liquid chamber 13 and a second cooling liquid chamber 14 that are disposed at intervals, a partition 15 is disposed between the first cooling liquid chamber 13 and the second cooling liquid chamber 14, and a liquid flow channel 16 for communicating the first cooling liquid chamber 13 and the second cooling liquid chamber 14 is disposed on the partition 15.

In this embodiment, the top of the housing 10 is provided with a first coolant port 11 communicating with a first coolant chamber 13, and a second coolant port 12 communicating with a second coolant chamber 14. Accordingly, the flow channel 16 is disposed at or near the bottom of the partition.

Preferably, in this embodiment, the first cooling liquid interface 11 and the second cooling liquid interface 12 are disposed at an end of the housing away from the collecting assembly 20, and the liquid flow channel 16 is disposed at an end of the separator 15 near the collecting assembly 20. By the arrangement, the travel of the cooling liquid in the shell is longer, and the heat exchange efficiency is higher. Of course, the positions of the first and second coolant ports 11 and 12 and the flow channel 16 are only preferable in the present embodiment, and the positions may be adjusted as needed.

In this embodiment, fins 40 are disposed in the gaps between adjacent flat tubes 30 to improve heat exchange efficiency. It should be noted that, in this embodiment, fins are only illustrated between part of the flat tubes, and those skilled in the art should know that, all the gaps between the flat tubes may be provided with fins, and the fins are mature components in the art, which are not described herein.

As a particular feature of this embodiment, as shown in fig. 4, the first and second coolant chambers 13 and 14 are provided with a communication chamber 17 at an end remote from the manifold assembly 20. As shown in fig. 5 and 6, the flat pipe 30 passes through the first cooling liquid chamber 13, the communication chamber 17, and the second cooling liquid chamber 14 in this order.

Preferably, in this embodiment, the flat tube 30 has a U-shape as shown in fig. 9, and includes a pair of parallel segments 31 disposed in parallel, two ends 33 for welding with the current collecting module 20, and a connecting segment 32 for connecting the parallel segments 31.

In this embodiment, the connecting section 32 is arc-shaped. In the embodiment shown in fig. 5 and 6, the connecting sections 32 of adjacent flat tubes 30 are arranged in a close contact manner at the connecting chambers. Based on the requirement that the first cooling liquid chamber and the second cooling liquid chamber are isolated from each other, the adjacent flat pipes and the inner walls of the flat pipes and the communicating chamber are arranged in a sealing manner, for example, the adjacent flat pipes can be welded and sealed, and sealing materials can be clamped.

Of course, the close fitting is only a preferred embodiment of the present embodiment, and as shown in fig. 11, the connection sections 32 may be disposed at intervals at the communicating cavity, and in the embodiment shown in fig. 11, the connection sections 32 of the flat tubes 30 are distributed concentrically. In such an embodiment, a sealing structure 60 may be provided between adjacent flat tubes and between the flat tubes and the inner wall of the communication chamber for sealing, based on the need for the first and second coolant chambers to be isolated from each other.

Preferably, in this embodiment, as shown in fig. 10, two adjacent flat tubes may also form a flat tube assembly, where the end portions 33 of the flat tubes are tightly attached together to form a whole welded and fixed with the first connecting groove 23 and the second connecting groove 24. The purpose that sets up like this is that first spread groove 23 and second spread groove 24 can set up wider, and the welding degree of difficulty is littleer, and especially, the tip of two flat pipes is in the same place with the mode bending of drawing close in opposite directions, and the clearance between the adjacent flat nest of tubes is bigger, more convenient welding operation.

Preferably, the flat tubes in this embodiment are nested from inside to outside.

Preferably, in this embodiment, the top wall and the bottom wall of the housing 10 are provided with elastic parts 50 abutting against the flat tube 30 at the communicating cavity 17, so as to isolate the first cooling liquid chamber and the second cooling liquid chamber on the left and right sides.

It should be noted that, the flat tube form of the U-shaped structure is only a preferred embodiment of the present application, and the core utility model of the present application is that one end of the flat tube is welded with the current collecting assembly and is communicated with the first refrigerant interface, and the other end of the flat tube is welded with the current collecting assembly and is communicated with the second refrigerant interface, so that the flat tube extends along a track in the cooling liquid chamber, without being limited, and can extend in any shape.

Example two

The heat exchanger of this embodiment differs from the first embodiment in the different form of distribution of the flat tubes. Specifically, as shown in fig. 12, in the present embodiment, the flat tube group includes a first flat tube group 301 located in the first coolant chamber and a second flat tube group 302 located in the second coolant chamber.

Accordingly, in this embodiment, the communication chamber 17 of the foregoing embodiment may not be provided, and the distribution of the first connection groove and the second connection groove on the current collecting module 20 may be adaptively adjusted.

Example III

As shown in fig. 13 and 14, the heat exchanger of the present embodiment is different from the first embodiment in that two flat tube sets, including an upper flat tube set 310 and a lower flat tube set 320, are disposed in the cooling liquid chamber. Wherein, the upper flat tube group 310 is provided with an upper refrigerant inlet side 311 and an upper refrigerant outlet side 312, and the lower flat tube group 320 is provided with a lower refrigerant inlet side 321 and a lower refrigerant outlet side 322.

Accordingly, as shown in fig. 18, in the present embodiment, on the partition 15 between the first cooling liquid chamber 13 and the second cooling liquid chamber 14, the first liquid flow channel 161, the second liquid flow channel 162, and the third liquid flow channel 163 are arranged at intervals from top to bottom. Wherein the second flow channel 162 is located at a position corresponding to a gap between two flat tube groups, the first flow channel 161 is located at the top of the partition 15, and the third flow channel 163 is located at the bottom of the partition 15.

Preferably, in this embodiment, the cross-sectional areas of the first, second and third flow channels 161, 162 and 163 are sequentially increased.

In a preferred refrigerant circulation mode of this embodiment, as shown in fig. 15 and 16, the manifold assembly is provided with a first manifold 221 communicating with an upper refrigerant inlet side 311, a second manifold 211 communicating with an upper refrigerant outlet side 312, a third manifold 222 communicating with a lower refrigerant inlet side 321, and a fourth manifold 212 communicating with a lower refrigerant outlet side 322. The third manifold 222 is communicated with the second refrigerant interface 22, the second manifold 211 is communicated with the first refrigerant interface 21, and a communication channel 223 is arranged between the first manifold 221 and the fourth manifold 212.

Preferably, as shown in fig. 15 and 17, the side of the first manifold 221, the third manifold 222, and the fourth manifold 212 away from the flat tube group is covered with a cover plate 25. The cover plate is provided with a first opening 251 and a second opening 252, the second manifold 211 is communicated with the first refrigerant interface 21 through the first opening 251, and the third manifold 222 is communicated with the second refrigerant interface 22 through the second opening 252.

In the preferred refrigerant circulation mode, the refrigerant enters the header assembly from the second refrigerant interface 22, flows into the lower flat tube group 320 through the third header 222 and the lower refrigerant inlet side 321, flows out from the lower refrigerant outlet side 322 of the lower flat tube group 320 to the fourth header 212, flows into the upper flat tube group 310 from the communication channel 223, the first header 221 and the upper refrigerant inlet side 311 in this order, and flows out of the header assembly through the upper refrigerant outlet side 312, the second header 211 and the first refrigerant interface 21 of the upper flat tube group 310, thereby realizing the circulation of the refrigerant.

The above-described refrigerant circulation system is only a preferred embodiment of the present embodiment, and other types of refrigerant circulation systems may be provided. As an equivalent embodiment, for example, the upper refrigerant inlet side 311 and the lower refrigerant inlet side 321 are both in communication with the second refrigerant interface 22, and the upper refrigerant outlet side 312 and the lower refrigerant outlet side 322 are both in communication with the first refrigerant interface 21. In this refrigerant circulation mode, the refrigerant enters the collecting assembly from the second refrigerant interface 22, flows through the upper flat tube group 310 and the lower flat tube group 320 through the upper refrigerant inlet side 311 and the lower refrigerant inlet side 321, respectively, and flows out of the collecting assembly through the upper refrigerant outlet side 312, the lower refrigerant outlet side 322, and the first refrigerant interface 21, respectively.

It should be noted that, the present application only exemplifies the embodiment of one layer of flat tube group and two layers of flat tube groups, and if necessary, three or more layers of flat tube groups may be provided, and the refrigerant circulation mode thereof may be adaptively adjusted.

In summary, the foregoing description is only of the preferred embodiments of the utility model, and is not intended to limit the utility model to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (12)

1. The heat exchange assembly is characterized by comprising a current collecting assembly (20) and at least one layer of flat tube group, wherein the current collecting assembly is provided with a first refrigerant interface (21) and a second refrigerant interface (22), each layer of flat tube group comprises a plurality of flat tubes (30), and two ends of each flat tube are welded and fixed with the current collecting assembly and are respectively communicated with the first refrigerant interface (21) and the second refrigerant interface (22).

2. A heat exchange assembly according to claim 1, wherein fins (40) are provided in the gaps between adjacent flat tubes.

3. A heat exchange assembly according to claim 1 wherein said flat tubes are shaped including, but not limited to, U-shaped, with a plurality of flat tubes being nested inside-out.

4. A heat exchange assembly according to claim 3, wherein the flat tubes comprise a pair of parallel segments (31) arranged in parallel, two ends (33) for welding with the header assembly and a connecting segment (32) connecting the parallel segments (31).

5. The heat exchange assembly of claim 4 wherein the connection sections of adjacent flat tubes are disposed in close proximity or spaced apart relation.

6. A heat exchange assembly according to claim 4, wherein two adjacent flat tubes form a flat tube assembly in which the ends (33) of the flat tubes are brought into close contact.

7. Heat exchange assembly according to any one of claims 1-6, wherein the flat tube group is provided with a layer, the header assembly is provided with a number of first connection grooves (23) communicating with the first refrigerant interface and a number of second connection grooves (24) communicating with the second refrigerant interface, one end of each of the flat tubes in the flat tube group is welded to one of the first connection grooves, and the other end of each of the flat tubes is welded to one of the second connection grooves.

8. The heat exchange assembly according to any one of claims 1 to 6, wherein the flat tube group is provided with two layers including an upper flat tube group (310) provided with an upper refrigerant inlet side (311) and an upper refrigerant outlet side (312), and a lower flat tube group (320) provided with a lower refrigerant inlet side (321) and a lower refrigerant outlet side (322).

9. Heat exchange assembly according to claim 8, wherein the manifold assembly is provided with a first manifold (221) communicating with an upper refrigerant inlet side (311), a second manifold (211) communicating with an upper refrigerant outlet side (312), a third manifold (222) communicating with a lower refrigerant inlet side (321) and a fourth manifold (212) communicating with a lower refrigerant outlet side (322), wherein the third manifold (222) communicates with a second refrigerant interface (22), the second manifold (211) communicates with a first refrigerant interface (21), and a communication channel (223) is provided between the first manifold (221) and the fourth manifold (212).

10. Heat exchange assembly according to claim 9, wherein the side of the first manifold (221), the second manifold (211), the third manifold (222) and the fourth manifold (212) facing away from the flat tube stack is covered with a cover plate (25) provided with a first opening (251) and a second opening (252), the second manifold (211) being in communication with the first coolant interface (21) via the first opening (251), the third manifold (222) being in communication with the second coolant interface (22) via the second opening (252).

11. Heat exchange assembly according to claim 8, wherein the upper (311) and lower (321) refrigerant inlet sides are each in communication with the second refrigerant interface (22), and wherein the upper (312) and lower (322) refrigerant outlet sides are each in communication with the first refrigerant interface (21).

12. A heat exchanger, characterized by comprising at least a housing (10) and a heat exchange assembly according to any one of claims 1-11, wherein a cooling liquid chamber is arranged inside the housing, the collecting assembly (20) is fixedly connected to one side of the housing, the flat tube is located in the cooling liquid chamber, and the cooling liquid chamber is provided with a first cooling liquid interface (11) and a second cooling liquid interface (12).