CN111854478A

CN111854478A - Heat exchanger

Info

Publication number: CN111854478A
Application number: CN201910729968.0A
Authority: CN
Inventors: 董军启; 张伟伟; 黄宁杰; 其他发明人请求不公开姓名
Original assignee: Hangzhou Sanhua Research Institute Co Ltd
Current assignee: Sanhua Holding Group Co Ltd
Priority date: 2019-04-30
Filing date: 2019-08-08
Publication date: 2020-10-30

Abstract

The invention belongs to the technical field of heat exchange, and discloses a heat exchanger, which comprises: the heat exchange core body comprises at least one heat exchange tube; the heat exchange tube comprises a heat exchange core, a first collecting box and a second collecting box, wherein the heat exchange core is arranged in the heat exchange core; the shell is connected with the first collecting tank and the second collecting tank and comprises at least two groups of inlets and outlets which are oppositely arranged; first channels are formed between every two adjacent heat exchange tubes and/or between the heat exchange tubes and the shell, each group of inlets and outlets are communicated with part of the first channels, and the first channels communicated with the inlets of different groups are mutually independent. The heat exchanger can form a plurality of passages for the circulation of the heat exchange medium, and the heat exchange medium in the passages exchanges heat, so that multi-path heat exchange can be realized, and the application scenes of the heat exchanger are enriched.

Description

Heat exchanger

Technical Field

The invention relates to the technical field of heat exchange, in particular to a heat exchanger.

Background

Heat exchangers, also known as heat exchangers, are widely used in heat exchange systems (e.g., air conditioning systems). The heat exchanger can be used for heat exchange between a refrigerant and external air and also can be used for heat exchange between the refrigerant and cooling liquid. In the related art, a heat exchanger includes a housing, the housing includes a set of inlet and outlet, and a path for flowing a heat exchange medium is formed in the housing.

Disclosure of Invention

The invention aims to provide a heat exchanger which can realize multi-path heat exchange.

In order to achieve the purpose, the invention adopts the following technical scheme:

a heat exchanger, comprising:

the heat exchange core body comprises at least one heat exchange tube;

the heat exchange tube comprises a heat exchange core, a heat exchange core and a heat exchange tube, wherein the heat exchange core comprises a heat exchange core body and a heat exchange tube, the heat exchange core body comprises a first collecting tank and a second collecting tank which are arranged on two sides of the heat exchange core body, one end of the heat exchange tube is connected with the first collecting tank, the other end of the heat exchange tube is connected with the second collecting tank, and an inner cavity of the heat exchange tube is communicated with an inner cavity;

the shell is at least partially arranged around the heat exchange core and is connected with the first collecting tank and the second collecting tank, and the shell comprises at least two groups of inlets and outlets which are oppositely arranged;

first channels are formed between every two adjacent heat exchange tubes and/or between the heat exchange tubes and the shell, each group of the inlets and the outlets are communicated with part of the first channels, and the first channels communicated with the inlets of different groups are mutually independent.

Optionally, the heat exchange core further comprises at least one heat exchange fin, the heat exchange fin is arranged in the first channel, and at least part of the heat exchange fin is connected with the heat exchange tube.

Optionally, the header is provided with a second channel, the header is provided with a first through hole, the end of the heat exchange tube is accommodated in the first through hole, and the first through hole communicates the second channel and the inner cavity of the heat exchange tube.

Optionally, the side wall of the heat exchange tube in the width direction is attached to the shell.

Optionally, for the same group of the inlet and the outlet, the inlet includes at least one second through hole, the outlet includes at least one third through hole, the number of the third through holes is the same as that of the second through holes, and each first channel communicates one second through hole with one third through hole.

Optionally, a plurality of second through holes of the inlets of different groups are distributed along the height direction of the shell in a staggered manner, a plurality of third through holes of the outlets of different groups are distributed along the height direction of the shell in a staggered manner, the second through holes of the same group are arranged at equal intervals, and the third through holes of the same group are arranged at equal intervals.

Optionally, for the inlet and the outlet in the same group, the inlet includes a second through hole, the outlet includes a third through hole, and the second through hole and the third through hole are communicated with the corresponding first channel; the second through holes of the inlets of different groups are arranged along the height direction of the shell, and the third through holes of the outlets of different groups are arranged along the height direction of the shell.

Optionally, the heat exchanger further comprises a plurality of distribution boxes fixed to the housing, the distribution boxes are provided with accommodating cavities, and the accommodating cavity of each distribution box at least covers one inlet or one outlet.

Optionally, the shell includes a main body portion and a flange, the flange is formed by extending the end portion of the shell in a direction away from the heat exchange core, and the flange is connected with the header and the main body portion.

Optionally, the shell comprises a first shell and a second shell, and the first shell and the second shell are arranged around the heat exchange core and fixed to the header.

The shell of the heat exchanger comprises at least two groups of inlets and outlets which are arranged oppositely, each group of inlets and outlets are communicated with part of the first channels, the inlets and outlets of different groups of the first channels which are communicated are mutually independent, the inlets, outlets of different groups of the first channels which are communicated form at least two channels for heat exchange media to flow through, and the heat exchange media in the channels exchange heat, so that multi-channel heat exchange can be realized, and application scenes of the heat exchanger are enriched.

Drawings

Fig. 1 is a schematic perspective view of a heat exchanger according to a first embodiment of the present invention;

FIG. 2 is an exploded view of a heat exchanger according to a first embodiment of the present invention;

FIG. 3 is a schematic view of a heat exchange core according to a first embodiment of the present invention;

FIG. 4 is a schematic view of a first housing having two sets of inlets according to an embodiment of the present invention;

FIG. 5 is a schematic view of an alternative configuration of a first housing having two sets of inlets according to one embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a second housing with two sets of outlets according to a first embodiment of the present invention;

fig. 7 is an exploded view of the housing according to the first embodiment of the present invention;

FIG. 8 is a schematic diagram of a housing having two sets of inlet and outlet ports according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a housing having three sets of inlet and outlet ports according to a first embodiment of the present invention;

FIG. 10 is a schematic view of a dispenser cartridge mounted on a housing according to one embodiment of the invention;

FIG. 11 is a schematic structural diagram of a distribution box according to a first embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a heat exchanger according to a second embodiment of the present invention;

FIG. 13 is an exploded view of a heat exchanger according to a second embodiment of the present invention;

fig. 14 is a schematic structural diagram of a second housing according to a second embodiment of the present invention.

In the figure:

1. a heat exchange core body; 11. a heat exchanger fin; 12. a heat exchange pipe;

21. a first header tank; 22. a second header tank; 20a, a first conduit;

3. a housing; 31. an inlet; 311. a second through hole; 32. an outlet; 321. a third through hole; 33. a first housing; 34. a second housing; 35. a first extension portion; 36. flanging; 37. a second extension portion; 38. a second positioning portion;

4. a distribution box; 41. an accommodating chamber; 42. a pipe orifice; 43. a first positioning portion;

10. a first channel; 20. a first via.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example one

This embodiment provides a heat exchanger, and this heat exchanger can be applied to the heat transfer field, for example can use in air conditioning system, car, heavy machinery and other processing fields that need the heat transfer etc. to realize the heat transfer process. Referring to fig. 1 and 2, the heat exchanger provided in the present embodiment includes a heat exchange core 1, a header, and a housing 3, wherein:

a passage through which a heat exchange medium (collectively referred to as a first medium) flows is formed between the heat exchange core 1 and the housing 3, a passage through which another medium (collectively referred to as a second medium) flows is formed between the heat exchange core 1 and the header tank, and the first medium can exchange heat with the second medium.

The heat exchange core 1 comprises at least one heat exchange tube 12. In this embodiment, the heat exchange core 1 may further include at least one heat exchange fin 11, and at least a portion of the heat exchange fin 11 is connected to the heat exchange tube 12. Specifically, as shown in fig. 2, the heat exchange core 1 includes a plurality of heat exchange fins 11 and a plurality of heat exchange tubes 12, and the plurality of heat exchange fins 11 and the plurality of heat exchange tubes 12 are arranged alternately one by one. It should be understood that the second medium circulates in the heat exchange tube 12, and the heat exchange effect between the first medium and the second medium can be improved by using the heat exchange fins 11.

Referring to fig. 3, the heat exchanger fins 11 are arranged in groups, and each group of heat exchanger fins 11 is laid above or below the adjacent heat exchange tube 12 in rows to enhance the heat transfer effect of the second medium in the heat exchange tube 12. In this embodiment, the heat exchanger fins 11 and the heat exchanger tubes 12 are fixed by brazing.

Optionally, the overall laying area of each group of heat exchange fins 11 is the same as or substantially the same as the area of the heat exchange tubes 12, so as to achieve the best heat exchange effect. In this embodiment, the heat exchanging fins 11 may be fins or other plate-like structures capable of realizing heat transfer. The heat exchanging plate 11 may be an integrated structure or a combined structure.

A first channel 10 is formed between two adjacent heat exchange tubes 12 and/or between the heat exchange tube 12 and the shell 3, the heat exchange fin 11 is arranged in the first channel 10, and a first medium can enter the first channel 10 to exchange heat with a second medium in the heat exchange tube 12.

Optionally, the heat exchange tube 12 may be a flat tube, and the area of the flat tube is not less than the overall laying area of each group of the heat exchange fins 11. Specifically, in this embodiment, the area of the flat tube specifically refers to the surface area of any one of the upper layer and the lower layer shown in fig. 3, that is, the surface area that plays a role in heat exchange. The overall laying area of the heat exchange fins 11 is as follows: after the same group of heat exchange fins 11 are laid on the heat exchange tubes 12, the projection area of the group of heat exchange fins 11 on the flat tubes is large.

It is of course understood that the heat exchange tubes 12 described above may also consist of a number of round tubes laid in rows, into which the second medium enters and flows simultaneously.

In this embodiment, the lateral wall of the width direction of the heat exchange tube 12 is attached to the housing 3, for example, when the heat exchange tube 12 is a flat tube, the lateral walls on two sides of the width direction of the flat tube are attached to the housing 3 by brazing, so that the formed first channel 10 can be independently conducted. When the heat exchange tubes 12 are in a row of round tubes, the two outermost round tubes are in line contact with the shell 3, and the line contact positions are brazed.

Exemplarily, the uppermost end and the lowermost end of the heat exchange core body 1 are heat exchange fins 11 (shown in fig. 2 and fig. 3), a first channel 10 is formed between the heat exchange tube 12 at the uppermost end and the lowermost end and the shell 3, and the heat exchange tube 12 is arranged between every two adjacent heat exchange fins 11. Of course, it can be understood that heat exchange tubes 12 may be disposed at the uppermost end and the lowermost end of the heat exchange core 1, and a heat exchange fin 11 is disposed between two adjacent heat exchange tubes 12.

In this embodiment, the overall structure of the heat exchange core 1 may be a rectangular parallelepiped structure, or may be other three-dimensional patterns. Of course, it can be understood that the three-dimensional pattern structure may be regular or irregular, and the heat exchange effect is not affected.

The header of the present embodiment includes a first header 21 and a second header 22 disposed at two sides of the heat exchange core 1, one end of each of the plurality of heat exchange tubes 12 is received in the first header 21, the other end of each of the plurality of heat exchange tubes 12 is received in the second header 22, and two ends of each of the plurality of heat exchange tubes 12 are fixed to the first header 21 and the second header 22 by brazing.

The first header 21 and the second header 22 are provided with a second channel (not shown) through which the second medium flows and a first through hole 20, the end of the heat exchange tube 12 is received in the first through hole 20, and the first through hole 20 communicates the second channel with the inner cavity of the heat exchange tube 12. The second medium can enter the heat exchange tube 12 through the second channel of the first header 21 and flow out through the second channel of the second header 22, and in the process, the second medium can exchange heat with the first medium outside the heat exchange tube 12.

In the present embodiment, the first collecting tank 21 and the second collecting tank 22 have the same structure, and the difference is that the first collecting tank 21 is used for the entrance of the second medium, and the second collecting tank 22 is used for the exit of the second medium.

Alternatively, in the present embodiment, the first collecting tank 21 and the second collecting tank 22 are provided with flow holes (not shown) for the second medium to enter or exit the second channel, the flow holes are connected with a first pipe 20a, and the first pipe 20a can communicate with an external pipe for conveying the second medium to enter the flow holes.

Alternatively, in this embodiment, the flow hole of the first header tank 21 is disposed at the upper end, and the flow hole of the second header tank 22 is disposed at the lower end, so that after the second medium enters the flow hole above the first header tank 21, it can flow from top to bottom, and sequentially enter the heat exchange tubes 12 communicated with the first header tank 21, and finally flow out from the flow hole below the second header tank 22 by its own weight. The structure is arranged, so that the circulation of the second medium can be facilitated.

The shell 3 at least partially surrounds the heat exchange core 1 (shown in fig. 1), and is matched with the header tank to surround and cover the heat exchange core 1 so as to be sealed in the inner cavity of the shell. In this embodiment, two sides of the shell 3 are welded to two sides of the heat exchange core 1, so that the shell 3, the heat exchange core 1 and the collecting tanks on the two sides form a closed space together, so as to realize circulation of the first medium in the first channel 10.

Optionally, the shell 3 may be an integrally formed structure, or may be an assembled structure of two or more plates, and when the shell is an assembled structure of two or more plates, two adjacent plates are fixed by brazing, and finally surround and cover the heat exchange core 1. In addition, the above two or more plates may be strip plates, the length of which is greater than or equal to the length of the heat exchange core body 1, and the plurality of strip plates are arranged around the heat exchange core body 1. The above two or more plates may also be annular plates, i.e. a single annular plate can surround the heat exchange core 1, and the sum of the widths of the plurality of annular plates is greater than or equal to the length of the heat exchange core 1.

In this embodiment, the housing 3 includes a first housing 33 (shown in fig. 4) and a second housing 34 (shown in fig. 6), the first housing 33 and the second housing 34 have substantially the same structure and both have substantially L-shaped structures, when the first housing 33 and the second housing 34 are assembled, the first housing 33 is attached to the outer side of the heat exchange core 1 in a right L-shaped manner, and the second housing 34 is attached to the outer side of the heat exchange core 1 in an inverted L-shaped manner, so that the first housing 33 and the second housing 34 substantially form a complete rectangular housing 3. The joint of the first housing 33 and the second housing 34 is fixedly connected by brazing.

In this embodiment, the first shell 33 and the second shell 34 may be made of aluminum plates, and they may be welded to the outside of the heat exchange tubes 12 of the heat exchange core 1 by brazing.

In addition, referring to fig. 4, a first extending portion 35 is disposed on one side of the first housing 33 and the second housing 34, a second extending portion 37 is disposed on one side of the first housing 33 and the second housing 34, where the first extending portion 35 is not extended, the first extending portion 35 of the first housing 33 can overlap with the second extending portion 37 of the second housing 34, and similarly, the first extending portion 35 of the second housing 34 can overlap with the second extending portion 37 of the first housing 33, and the overlapping position of the second extending portion 37 and the first extending portion 35 is soldered, so that the soldering area can be increased, the soldering assembly is facilitated, and the strength of the first housing 33 and the second housing 34 after being soldered is also increased.

In this embodiment, as shown in fig. 4 and 5, the first extending portion 35 is formed by horizontally extending one side of the first housing 33 and the second housing 34, and has a length of 3mm to 10 mm. The second extension 37 is formed by extending the other side of the first housing 33 and the second housing 34 in a direction parallel to the first extension 35 (may also be formed by bending), and then the first housing 33 is placed in a right L-shaped manner, and the second housing 34 is placed in an upside-down L-shaped manner, so that the first housing 33 and the second housing 34 form a complete rectangular housing 3. At the joint position of the first casing 33 and the second casing 34, the second extending portion 37 and the first extending portion 35 are disposed in an overlapping manner, and when the casing 3 is viewed from the inside to the outside, the second extending portion 37 is located outside the first extending portion 35, that is, the inner wall surface of the second extending portion 37 is attached to the outer wall surface of the first extending portion 35. The structure can reduce the assembly difficulty of the first shell 33 and the second shell 34, increase the welding area and improve the strength of the first shell 33 and the second shell 34 after welding.

It can be understood that, in another embodiment, the positions and shapes of the first housing 33 and the second extension portion 37 of the second housing 34 are not changed, and the first extension portion 35 extends outward perpendicular to the side surface where the second extension portion 37 is not disposed, and then extends horizontally for a certain distance, so that the first extension portion 35 on the first housing 33 overlaps the outer side (when viewed from the inside to the outside of the second extension portion 37 on the second housing 34), and at this time, the outer wall surface of the second extension portion 37 is attached to the inner wall surface of the first extension portion 35.

In another embodiment, the first housing 33 and the second housing 34 are no longer provided with the second extension 37, but when the first housing 33 and the second housing 34 are in the assembled state, taking the first housing 33 as an example, the first extension 35 of the first housing 33 horizontally extends to a side of the second housing 34 where the second extension 37 is no longer provided, and then vertically extends to the inside of the entire housing 3, i.e., the first extension 35 is a generally L-shaped structure, which can be snap-fitted on the second housing 34 outside the side where the second extension 37 is no longer provided.

In this embodiment, further, the shell includes a main body (not shown in the figure) and flanges 36, the flanges 36 are provided on the two side ends of the shell 3, the flanges 36 are formed by extending the ends of the shell 3 in the direction away from the heat exchanging core 1, and the flanges 36 connect the header and the main body.

Specifically, the flanges 36 extend circumferentially on both sides of the first casing 33 and the second casing 34, and the flanges 36 are used for being attached to the header, and then the attached position can be fixed by brazing, so that the first casing 33, the second casing 34 and the header are fixed. Alternatively, the first extension 35 and the second extension 37 may be provided without the burring, so that the two are brazed when they are overlapped.

It will of course be appreciated that the first housing 33 and the second housing 34 may also be configured as shown in figure 5, i.e. in a generally C-shaped configuration, assembled in the same manner as the first housing 33 and the second housing 34 in an L-shaped configuration. The first housing 33 and the second housing 34 may have different shapes and structures, and only need to be able to be spliced into one housing 3.

Referring to fig. 4, in the present embodiment, at least two sets of inlet 31 and outlet 32 are disposed on the housing 3, that is, at least two inlets 31 and at least two outlets 32 are disposed on the housing 3, which may be at least two inlets 31 disposed on the first housing 33 and at least two outlets 32 disposed on the second housing 34; at least two outlets 32 may be disposed on each first shell 33, and at least two inlets 31 may be disposed on each second shell 34; it is also possible to provide at least one inlet 31 and at least one outlet 32 on both the first housing 33 and the second housing 34, respectively.

In this embodiment, it should be noted that the number of the inlets 31 and/or the outlets 32 on the first casing 33 is the same as the number of the outlets 32 and/or the inlets 31 on the second casing 34. I.e. the first housing 33 and the second housing 34 together form at least two sets of oppositely arranged inlet 31 and outlet 32.

In addition, each set of the inlet 31 and the outlet 32 on the housing 3 is disposed corresponding to a portion of the first channel 10, and specifically, as can be seen from fig. 4 to 9, the inlet 31 includes at least one second through hole 311, and the outlet 32 includes at least one third through hole 321. The number of the second through holes 311 in the same group is the same as that of the third through holes 321 in the group, and each first channel 10 is communicated with one second through hole 311 and one third through hole 321. Further, a passage through which the first medium flows is formed by the second through hole 311, the first channel 10, and the third through hole 321. In this embodiment, the second through hole 311 and the third through hole 321 may be rectangular holes, circular holes, elliptical holes, or holes of other shapes, and only the first medium needs to be circulated and not to be flowed.

For example, the size and shape of the second through holes 311 of the same group of inlets 31 may be the same or different according to the requirement, and the size and shape of the third through holes 321 of the same group of outlets 32 may also be the same or different according to the requirement. Of course, the size and shape of the second through holes 311 of the inlets 31 of different groups can be the same or different according to requirements, and the size and shape of the third through holes 321 of the outlets 32 of different groups can also be the same or different according to requirements.

Further, the different sets of the inlet 31 and the outlet 32 and the corresponding first channel 10 may form different passages, such as one set of the inlet 31 and the outlet 32, each of the second through holes 311 and the corresponding first channel 10 are communicated with each other through the third through hole 321 to form a flow path for the first medium to flow through, and the same set of the inlet 31 and the outlet 32 and the corresponding first channel 10 may form a plurality of flow paths, which constitute one passage corresponding to the set of the inlet 31. Accordingly, the other sets of inlet 31 and outlet 32 and corresponding first channels 10 also form additional passageways. In this embodiment, the different paths formed by the different sets of inlets 31 and outlets 32 may be used for circulating the first medium with different temperatures and/or types. Of course, different channels may also be provided for the circulation of the same temperature and/or type of first medium. However, the same set of inlet 31 and outlet 32 forms a passage through which only the same temperature and/or type of first medium can flow.

In this embodiment, optionally, the distance between two adjacent second through holes 311 and the distance between two adjacent third through holes 321 in the same group are the same, and the calculation of the distance H specifically satisfies the following formula: (n) L1+ (n-1) L2 < H ≦ (n +2) L1+ (n +1) L2, wherein H is the maximum distance between two adjacent second through holes 311 of the same group of inlets 31, L1 is the thickness of the heat exchange tube 12, L2 is the thickness of the first channel 10 (i.e. the distance between two adjacent heat exchange tubes 12), and n is the group number of inlets 31 (n is greater than or equal to 2). Taking the case that the shell 3 has two sets of inlets 31 as an example, the maximum distance H of two adjacent second through holes 311 in the second through holes 311 of each set of inlets 31 ranges between 2L1+ L2 and 4L1+3L2, i.e. the maximum distance H is greater than the sum of two times the thickness of the heat exchange tube 12 and one time the thickness of the first channel 10, and is less than or equal to the sum of four times the thickness of the heat exchange tube 12 and three times the thickness of the first channel 10 (shown in fig. 8).

And when the casing 3 has three sets of the inlet 31 and the outlet 32, as shown in fig. 9, the maximum distance H of two adjacent second through holes 311 in the second through holes 311 of each set of the inlet 31 ranges between 3L1+2L2 and 5L1+4L2, i.e., the maximum distance H is greater than three times the sum of the thickness of the heat exchange tube 12 and twice the thickness of the first channel 10, and is less than or equal to five times the sum of the thickness of the heat exchange tube 12 and four times the thickness of the first channel 10.

In this embodiment, further, the widths of the second through hole 311 and the third through hole 321 in the vertical direction of the first housing 33 and/or the second housing 34 are not greater than the width of a single first channel 10 in the vertical direction, so as to ensure that each second through hole 311 is communicated with only one first channel 10. That is, the first medium flowing in through each second through hole 311 can all flow into the single first passage 10 communicating therewith, and finally flow out through the corresponding third through hole 321 without channeling into the other first passages 10.

In addition, in the present embodiment, the second through holes 311 of the inlets 31 of different groups are distributed in a staggered manner along the height direction of the housing 3, and the third through holes 321 of the outlets 32 of different groups are distributed in a staggered manner along the height direction of the housing 3, that is, the second through holes 311 and/or the third through holes 321 of different groups on the first housing 33 are distributed in a staggered manner. Taking the case 3 provided with two sets of inlets 31 and outlets 32 as an example, as shown in fig. 7 and 8, two inlets 31 are provided on the first case 33, the inlet 31 includes a plurality of second through holes 311, correspondingly, two outlets 32 are provided on the second case 34, the outlet 32 includes a plurality of third through holes 321, and the second through holes 311 of one set of inlets 31 and the second through holes 311 of the other set of inlets 31 are distributed alternately because two different sets of inlets 31 are provided on the first case 33. Through the arrangement of the structure, it can be ensured that the first channels 10 communicated with any two groups of inlets 31 are different, wherein a passage for the first medium to flow is formed among one group of the second through holes 311, the third through holes 321 and the corresponding plurality of first channels 10, the passage can regulate the temperature of a certain position, and another passage for the first medium to flow is formed among the other group of the second through holes 311, the third through holes 321 and the corresponding plurality of first channels 10, and the passage can regulate the temperature of another position.

Optionally, in this embodiment, the plurality of second through holes 311 in the same group are arranged at equal intervals, and the plurality of third through holes 321 in the same group are arranged at equal intervals. Because the second through holes 311 and the third through holes 321 are communicated with the first channel 10, and the first channel 10 is formed between the heat exchange tubes 12, when the second through holes 311 are arranged at equal intervals and the third through holes 321 are arranged at equal intervals, the structure that the heat exchange tubes 12 are arranged at equal intervals can be ensured, so that the structural strength of the heat exchange core body 1 is large enough, and the heat exchange core body has good pressure bearing performance. Moreover, the structure can ensure that the second medium in each heat exchange tube 12 can fully exchange heat with the first medium in the first channel 10, and the heat exchange effect is good.

Referring to fig. 10, the heat exchanger of the present embodiment further includes a distribution box 4, the distribution box 4 is fixed to the housing 3, the distribution box 4 is provided with a receiving cavity 41, the receiving cavity 41 can cover at least one of the inlet 31 and the outlet 32, the first medium can enter the receiving cavity 41, and the first medium can enter the inlet 31 from the receiving cavity 41; or from the outlet 32 into the receiving chamber 41 and finally out of the receiving chamber 41. Taking the first housing 33 with two sets of inlets 31 and the second housing 34 with two sets of outlets 32 as an example, two distribution boxes 4 are disposed on the first housing 33 and respectively cover the inlets 31 (specifically, all the second through holes 311 covering the inlets 31), and two distribution boxes 4 on the second housing 34 respectively cover the outlets 32 (specifically, all the third through holes 321 covering the outlets 32). It should be understood that the distribution box 4 covering the inlet 31 means that the upper end of the distribution box 4 is higher than the upper end of the inlet 31 and the lower end of the distribution box 4 is lower than the lower end of the inlet 31 along the length direction of the distribution box 4, and the left end of the distribution box 4 exceeds the left end of the inlet 31 and the right end of the distribution box 4 exceeds the right end of the inlet 31 along the width direction of the distribution box 4. Similarly, the distributor box 4 covering the outlet 32 means that the upper end of the distributor box 4 is higher than the upper end of the outlet 32 and the lower end of the distributor box 4 is lower than the lower end of the outlet 32 along the length direction of the distributor box 4, and the left end of the distributor box 4 exceeds the left end of the outlet 32 and the right end of the distributor box 4 exceeds the right end of the outlet 32 along the width direction of the distributor box 4. With the above-described configuration, it is possible to ensure that the first medium enters the entire second through-hole 311 of the inlet 31 from the distribution box 4 or the entire second through-hole 321 of the outlet 32 into the distribution box 4.

Alternatively, a plurality of accommodating chambers 41 may be provided in the distribution box 4, each accommodating chamber 41 being capable of communicating with one second through hole 311 of one inlet 31 or one third through hole 321 of one outlet 32, i.e. the number of accommodating chambers 41 is the same as the number of second through holes 311 of each set of outlets 32, the first medium being capable of entering the plurality of accommodating chambers 41 and entering the second through holes 311 from the accommodating chamber 41, or the first medium entering the plurality of accommodating chambers 41 only through the third through holes 321 and finally flowing out from the accommodating chambers 41.

It is understood that when the housing 3 has more than three sets of the inlet 31 and the outlet 32, one distribution box 4 may be disposed on each of the inlet 31 and the outlet 32, or a plurality of the inlets 31 may be covered by one distribution box 4 at the same time, and a plurality of the outlets 32 may be covered by one distribution box 4 at the same time, at this time, the first medium in the accommodating cavity 41 of the distribution box 4 enters the plurality of the inlets 31, and the first medium flowing out from the plurality of the outlets 32 is gathered in the accommodating cavity 41 of the distribution box 4 and flows out from the accommodating cavity 41.

In this embodiment, referring to fig. 11, the accommodating cavity 41 of the distribution box 4 may be formed by stamping an aluminum plate, and the accommodating cavity 41 is connected to a pipe orifice 42, and the pipe orifice 42 is used for connecting with a pipeline to realize the inflow or outflow of the first medium.

Alternatively, a first positioning portion 43 is provided at one side edge of the distribution box 4, and correspondingly, a second positioning portion 38 (shown in fig. 4 and 8) is provided at a position where the distribution box 4 is mounted on the housing 3, and the first positioning portion 43 can cooperate with the second positioning portion 38 to realize positioning when the distribution box 4 is mounted, so as to reduce the problem of inclination when the distribution box is mounted, and make mounting of the distribution box 4 simpler. In this embodiment, the first positioning portion 43 may be a semicircular opening or a circular hole, and correspondingly, the second positioning portion 38 may be a positioning column capable of being engaged with the semicircular opening or the circular hole. The first positioning portion 43 and the second positioning portion 38 may be grooves provided in the same direction, and in this case, the first positioning portion 43 may be fitted in the second positioning portion 38, or the second positioning portion 38 may be fitted in the first positioning portion 43, so that the distribution box 4 can be positioned in the same manner when mounted.

When the heat exchanger of the embodiment is used, the second medium firstly enters the first collecting box 21, then enters the plurality of heat exchange tubes 12 through the first collecting box 21, flows into the second collecting box 22 from the heat exchange tubes 12, then flows out through the second collecting box 22, and multiple paths of first media (which may be the same in temperature and type or different in temperature and type) respectively flow into the accommodating cavity 41 of the distribution box 4 from the tube orifices 42 of the distribution box 4, then enter the first channels 10 through the inlets 31, exchange heat with the second medium in the heat exchange tubes 12 in the first channels 10, (meanwhile, the heat exchange effect between the first medium and the second medium is improved through the heat exchange fins 11), then enter the accommodating cavity 41 of the distribution box 4 through the outlets 32, and finally flow to multiple paths of positions where temperature regulation is needed through the tube orifices 42 of the distribution box 4 to perform temperature regulation.

The shell 3 of the heat exchanger of the embodiment includes at least two sets of inlets 31 and outlets 32 which are arranged oppositely, each set of inlet 31 and outlet 32 is communicated with part of the first channel 10, and the inlets 31 and the outlets 32 of different sets of first channels 10 which are communicated are mutually independent, so that a plurality of channels for the first medium to flow through can be formed, the first medium in the plurality of channels and the second medium in the heat exchange tube 12 can exchange heat, the purpose of multi-channel heat exchange is realized, and the application scenes of the heat exchanger are enriched.

Example two

The difference between this embodiment and the first embodiment is that the structure and the position of the inlet 31 and the outlet 32 on the housing 3 of this embodiment are different, and specifically, referring to fig. 12 to 14, this housing 3 is also provided with at least one inlet 31 and at least one outlet 32, which may be at least two inlets 31 on the first housing 33 and at least two outlets 32 on the second housing 34. At least two outlets 32 may be provided on each of the first housings 33, and at least two inlets 31 may be provided on the second housing 34. It is also possible to provide at least one inlet 31 and at least one outlet 32 on both the first housing 33 and the second housing 34, respectively.

In this embodiment, for example, two inlets 31 are disposed on the first housing 33, and two outlets 32 are disposed on the second housing 34, as shown in fig. 13, the two inlets 31 are distributed up and down in the height direction of the first housing 33, and each inlet 31 has only one second through hole 311, and the second through hole 311 is at least communicated with one first channel 10. The two outlets 32 are distributed up and down in the vertical direction of the second housing 34, and the two outlets may be coaxially arranged (i.e. the two outlets 32 have the same distance to the same end of the second housing 34), or may be non-coaxially arranged (i.e. the two outlets 32 have different distances to the same end of the second housing 34, and are distributed left and right as shown in fig. 13). Each of the outlets 32 has only one third through hole 321, and the third through hole 321 communicates with at least one first passage 10.

In the present embodiment, it should be understood that, when each inlet 31 has only one second through hole 311, the inlet 31 and the second through hole 311 in the drawings are represented as the same structure; when each outlet 32 has only one third through hole 321, the outlet 32 and the third through hole 321 in the drawings represent the same structure.

In this embodiment, when the second through holes 311 of the same inlet 31 and the third through holes 321 of the outlet 32 communicate with a plurality of first channels 10, the first channels 10 of the heat exchange core 1 may be divided into a plurality of regions, each region includes a plurality of adjacent first channels 10, and the first channels 10 of different regions do not overlap, wherein the second through holes 311 of one inlet 31 and the third through holes 321 of the outlet 32 communicate with the first channels 10 in one region, and the second through holes 311 of the other inlet 31 and the third through holes 321 of the outlet 32 communicate with the first channels 10 in the other region. With this structural arrangement, it is possible to ensure that the plurality of sets of inlets 31, outlets 32 and the passages formed by the corresponding first passages 10 are independent of each other.

In this embodiment, further, in at least two sets of inlets 31 and outlets 32, any two sets of inlets 31 are staggered to avoid overlapping, which causes the inlets 31 of different sets to contact with the circulating first medium, and thus multi-path heat exchange cannot be realized.

Other structures of the present embodiment are the same as those of the first embodiment, and are not described herein again.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A heat exchanger, comprising:

the heat exchange core body (1) comprises at least one heat exchange tube (12);

the header comprises a first header (21) and a second header (22) which are arranged on two sides of the heat exchange core (1), one end of the heat exchange tube (12) is connected with the first header (21), the other end of the heat exchange tube is connected with the second header (22), and the inner cavity of the heat exchange tube (12) is communicated with the inner cavity of the first header (21) and the inner cavity of the second header (22);

-a shell (3) arranged at least partially around said heat exchanging core (1), said shell (3) being connected to said first header (21) and said second header (22), said shell (3) comprising at least two sets of oppositely arranged inlet (31) and outlet (32);

first channels (10) are formed between two adjacent heat exchange tubes (12) and/or between the heat exchange tubes (12) and the shell (3), each group of the inlet (31) and the outlet (32) are communicated with part of the first channels (10), and the first channels (10) communicated with the inlets (31) of different groups are mutually independent.

2. A heat exchanger according to claim 1, wherein the heat exchange core (1) further comprises at least one fin (11), the fin (11) is provided in the first channel (10), and the fin (11) is at least partially connected with the heat exchange tube (12).

3. The heat exchanger according to claim 1 or 2, wherein the header is provided with a second channel (20), wherein the header is provided with a first through hole in which an end of the heat exchange tube (12) is received, and wherein the first through hole communicates the second channel with the inner cavity of the heat exchange tube (12).

4. The heat exchanger according to claim 1 or 2, wherein the side wall of the heat exchange tube (12) in the width direction is attached to the housing (3).

5. Heat exchanger according to claim 4, wherein for the same set of inlet (31) and outlet (32), the inlet (31) comprises at least one second through hole (311), the outlet (32) comprises at least one third through hole (321), the number of third through holes (321) being the same as the number of second through holes (311), one second through hole (311) and one third through hole (321) communicating with each first channel (10).

6. The heat exchanger according to claim 5, characterized in that the second through holes (311) of different groups of the inlets (31) are distributed in a staggered manner along the height direction of the shell (3), the third through holes (321) of different groups of the outlets (32) are distributed in a staggered manner along the height direction of the shell (3), the second through holes (311) of the same group are arranged at equal intervals, and the third through holes (321) of the same group are arranged at equal intervals.

7. The heat exchanger according to claim 4, characterized in that, for the same set of inlet (31) and outlet (32), the inlet (31) comprises a second through hole (311) and the outlet (32) comprises a third through hole (321), the second through hole (311) and the third through hole (321) communicating with the corresponding first channel (10); the second through holes (311) of the inlets (31) of different groups are arranged along the height direction of the shell (3), and the third through holes (321) of the outlets (32) of different groups are arranged along the height direction of the shell (3).

8. Heat exchanger according to any of claims 5 to 7, further comprising a plurality of distribution boxes (4) fixed to said housing (3), said distribution boxes (4) being provided with housing chambers (41), the housing chamber (41) of each distribution box (4) covering at least one inlet (31) or one outlet (32).

9. The heat exchanger according to any of claims 1-2, 5-7, characterized in that the shell (3) comprises a main body part and a flange (36), wherein the flange (36) is formed by extending the end of the shell (3) in a direction away from the heat exchanging core (1), and the flange (36) connects the header and the main body part.

10. A heat exchanger according to claim 9, characterised in that the shell (3) comprises a first shell (33) and a second shell (34), the first shell (33) and the second shell (34) being arranged around the heat exchanging core (1) and being fixed to the header.