CN115900399A - Heat exchanger - Google Patents

Abstract

The application provides a heat exchanger, which comprises a first current collecting piece, a second current collecting piece and at least two heat exchange assemblies; each heat exchange assembly comprises a first heat exchange piece, a second heat exchange piece, a third heat exchange piece and a fourth heat exchange piece; the first manifold includes at least two first manifold blocks, each first manifold block including a first manifold, a second manifold, and a third manifold; the second manifold includes at least two second manifold blocks, each second manifold block including a fourth manifold and a fifth manifold; the first heat exchange piece is communicated with the first manifold and the fourth manifold, the second heat exchange piece is communicated with the fourth manifold and the third manifold, the third heat exchange piece is communicated with the third manifold and the fifth manifold, and the fourth heat exchange piece is communicated with the fifth manifold and the second manifold. The distribution frequency of the heat exchange medium in the second collecting piece can be reduced when the heat exchanger works, and therefore the heat exchange efficiency is improved.

Description

Heat exchanger

Technical Field

The application 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 comprises a plurality of heat exchange pieces, a first collecting piece and a second collecting piece, wherein the first collecting piece and the second collecting piece are respectively arranged at two ends of each heat exchange piece and used for distributing and collecting heat exchange media.

The first flow collecting piece and the second flow collecting piece are provided with partition plates for dividing the inner cavity of the flow collecting piece into a plurality of cavities which are independent respectively, each cavity is communicated with part of the heat exchange pieces so as to divide all the heat exchange pieces connected with the flow collecting piece into a plurality of flows, and each flow corresponds to a plurality of heat exchange pieces and is used for improving the heat exchange effect of the heat exchanger. In the related art, when a heat exchange medium enters each heat exchange piece corresponding to a first flow, the heat exchange medium needs to be distributed, and when flow conversion is performed in a second flow collecting piece, the heat exchange medium in each heat exchange piece corresponding to one flow is converged into one cavity of the flow collecting piece, and then is redistributed and enters each heat exchange piece corresponding to another flow, that is, the problem of distribution needs to be considered when flow conversion is performed in the second flow collecting piece every time, and the problem of uneven distribution is encountered when distribution is performed every time. If the heat exchange media of each heat exchange piece corresponding to one process are distributed unevenly, the heat exchange efficiency of the process is affected, and therefore the heat exchange efficiency of the heat exchanger is affected.

Disclosure of Invention

The application provides a heat exchanger to reduce the distribution number of times of heat transfer medium in second mass flow piece when heat exchanger during operation, thereby improve heat exchange efficiency.

The present application provides a heat exchanger, comprising:

each heat exchange assembly comprises a first heat exchange piece, a second heat exchange piece, a third heat exchange piece and a fourth heat exchange piece;

the first collecting piece is arranged at the first end of the heat exchange assembly and comprises at least two first collecting cavity groups, each first collecting cavity group comprises a first collecting cavity, a second collecting cavity and a third collecting cavity, and the first collecting cavity, the second collecting cavity and the third collecting cavity are not communicated with each other in the first collecting piece; and

the second collecting piece is arranged at the second end of the heat exchange assembly and comprises at least two second collecting module groups, each second collecting module group comprises a fourth collecting module and a fifth collecting module, and the fourth collecting module and the fifth collecting module are not communicated with each other in the second collecting piece;

the inner cavity of the first heat exchange piece is communicated with the first manifold and the fourth manifold, the inner cavity of the second heat exchange piece is communicated with the fourth manifold and the third manifold, the inner cavity of the third heat exchange piece is communicated with the third manifold and the fifth manifold, and the inner cavity of the fourth heat exchange piece is communicated with the fifth manifold and the second manifold;

at least two of all of the fourth manifolds do not communicate with each other inside the second manifold, or at least two of all of the fifth manifolds do not communicate with each other inside the second manifold.

The technical scheme is as follows: the heat exchanger comprises at least two heat exchange assemblies, at least two first manifold groups and at least two second manifold groups, inner cavities of the first manifold group, the second manifold group and the heat exchange assemblies can be communicated to form a four-flow passage, at least two of all the fourth manifolds are not communicated with each other in the second manifold, or at least two of all the fifth manifolds are not communicated with each other in the second manifold. In the application, the heat exchanger is in a working state, when a heat exchange medium flows in the heat exchanger, the first heat exchange piece is communicated with the second heat exchange piece through the fourth manifold, the third heat exchange piece is communicated with the fourth heat exchange piece through the fifth manifold, at least two of all the fourth manifolds or at least two of all the fifth manifolds are not communicated with each other in the second manifold, the distribution frequency of the heat exchange medium in the second manifold is reduced when the heat exchanger works, and therefore the heat exchange efficiency is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

FIG. 1 is a schematic structural diagram of a first heat exchanger provided in an embodiment of the present application;

FIG. 2 is a schematic view of another angle of FIG. 1;

FIG. 3 is an exploded view of the heat exchanger of FIG. 1;

FIG. 4 is a schematic view of a partially cut-away construction of the heat exchanger shown in FIG. 1;

FIG. 5 is a schematic illustration of a partially exploded, shell-less configuration of the heat exchanger of FIG. 1;

FIG. 6 is a schematic exploded view of the heat exchanger of FIG. 5;

FIG. 7 is a schematic diagram of a further exploded view of FIG. 6;

FIG. 8 is a schematic diagram of a further exploded view of FIG. 7;

FIG. 9 is a schematic view of another angle of FIG. 8;

FIG. 10 is a schematic cross-sectional view of a heat exchanger according to an embodiment of the present disclosure;

FIG. 11 is a schematic cross-sectional view of a heat exchanger according to an embodiment of the present disclosure;

fig. 12 is an exploded view of a first manifold according to an embodiment of the present disclosure;

fig. 13 is an exploded view of a second manifold according to an embodiment of the present disclosure;

fig. 14 is a schematic structural view of the first current collector without the third body member according to the first embodiment of the present application;

fig. 15 is a schematic structural view of the second current collector without the sixth body member according to the first embodiment of the present application;

fig. 16 is a schematic structural view of the first current collector without the third main body member according to the second embodiment of the present application;

fig. 17 is a schematic structural view of a second current collecting member without a sixth main body member according to a second embodiment of the present application;

fig. 18 is a schematic structural view of the first current collector without the third main body member according to the third embodiment of the present application;

fig. 19 is a schematic structural view of a second current collector without a sixth body member according to a third embodiment of the present application;

FIG. 20 is a schematic view of the construction of the second body member, first header and second header of one embodiment;

FIG. 21 is a schematic view of another embodiment of the construction of the secondary body member, the first manifold and the second manifold;

FIG. 22 is a schematic cross-sectional view of FIGS. 20 and 21;

FIG. 23 is a schematic view of a still further embodiment of the construction of the second body member, first header and second header;

FIG. 24 is a schematic cross-sectional view of FIG. 23;

FIG. 25 is a schematic structural view of a first body member of another embodiment;

FIG. 26 is an enlarged view of a portion of FIG. 25 at A;

FIG. 27 is a schematic structural view of a fourth body member according to another embodiment;

FIG. 28 is a schematic structural view of a fourth body member according to yet another embodiment;

FIG. 29 is a schematic structural view of a fifth body member of another embodiment;

FIG. 30 is a schematic view of another angular configuration of the fifth body member illustrated in FIG. 29;

FIG. 31 is a cross-sectional view of the fifth body member and the fourth body member of FIG. 29 in engagement;

fig. 32 is a schematic structural diagram of a second heat exchanger according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

As shown in fig. 1 to 5, the present application provides a specific embodiment of a heat exchanger, which includes a heat exchanging core, a first collecting member 2, a second collecting member 3, and a shell 6, wherein the heat exchanging core includes a first end and a second end along opposite sides of the heat exchanging core in a length direction thereof, the first collecting member 2 and the second collecting member 3 are hermetically connected to two ends of the heat exchanging core, and an inner cavity of the heat exchanging core communicates with an inner cavity of the first collecting member 2 and an inner cavity of the second collecting member 3. And a shell 6 surrounds at least part of the heat exchange core, and two ends of the shell 6 are hermetically connected with the first current collector 2 and the second current collector 3 respectively. The heat exchanger has a first medium channel and a second medium channel, the first medium channel at least comprises a space between the first current collector 2, the second current collector 3 and the shell 6; the second medium channel at least comprises an inner cavity of the first current collector 2, an inner cavity of the second current collector 3 and an inner cavity of the heat exchange core body. The heat exchange medium in the first medium passage and the heat exchange medium in the second medium passage perform heat exchange in the housing 6.

Specifically, the housing 6 has an inner cavity, the housing 6 includes two first medium ports respectively communicating with the inner cavity of the housing 6, the two first medium ports are respectively used as an inlet and an outlet of the first medium, the first medium passes through the inlet of the first medium, the first medium channel and the outlet of the first medium to form a flow path of the first medium in the heat exchanger, and the first medium port may be provided with a first medium joint 7 to facilitate connection of the housing 6 with an external pipeline. The first collecting part 2 may include two second medium ports, where the two second medium ports are respectively used as an inlet and an outlet of a second medium, and the second medium port may be provided with a second medium connector 8 to facilitate connection of the first collecting part 2 with an external pipe.

In the present embodiment, the housing 6 has a split structure including a first shell 61, a second shell 62, and a liner 63. The first case 61 and the second case 62 are butted against each other, and the first medium is likely to leak along the butted gap between the first case 61 and the second case 62. The lining plate 63 covers the butt joint gap between the first shell 61 and the second shell 62 and is attached to the side walls of the first shell 61 and the second shell 62, so that a large connection area is formed, the connection strength is increased, and the sealing reliability is improved. It will be appreciated that the housing 6 may also be of one-piece construction. Optionally, the liner 63 may be disposed on one side of the shell 6 close to the heat exchange core, or may be disposed on one side of the shell 6 far from the heat exchange core. Optionally, the casing 6 may not be provided with the liner 63, and the edge of the first casing 61 and the edge of the second casing 62 are in concave-convex fit, so as to improve the problem of leakage at the butt joint gap.

The heat exchange core comprises a plurality of heat exchange pieces 1, two ends of each heat exchange piece 1 are connected to the first current collecting piece 2 and the second current collecting piece 3 respectively, the inside of each heat exchange piece 1 is communicated with the inside of the first current collecting piece 2, and the inside of each heat exchange piece 1 is communicated with the inside of the second current collecting piece 3. When the heat exchanger works, the second medium flows in the heat exchange member 1, and the first medium flows around the outer part of the heat exchange member 1. Fins can be arranged on two sides of the heat exchange piece 1, and the heat exchange area is increased through the fins, so that the heat exchange efficiency is further improved.

The heat exchange core body comprises at least two heat exchange assemblies, the heat exchange assemblies are arranged in parallel, each heat exchange assembly comprises a first heat exchange piece 11, a second heat exchange piece 12, a third heat exchange piece 13 and a fourth heat exchange piece 14, namely, every four adjacent heat exchange pieces 1 form a group, and a heat exchange assembly is formed together. The first collecting piece 2 is arranged at the first end of the heat exchange assembly, the first collecting piece 2 comprises a first collecting cavity group, the first collecting cavity group corresponds to the heat exchange assembly one by one, the first collecting cavity group comprises a first collecting cavity 21, a second collecting cavity 22 and a third collecting cavity 23, the first collecting cavity 21, the second collecting cavity 22 and the third collecting cavity 23 are not communicated with each other in the first collecting piece 2, and all the third collecting cavities 23 are not communicated with each other. The second collecting piece 3 is arranged at the second end of the heat exchange assembly, the second collecting piece 3 comprises second collecting cavity groups, the second collecting cavity groups correspond to the heat exchange assembly one by one, each second collecting cavity group comprises a fourth collecting cavity 31 and a fifth collecting cavity 32, the fourth collecting cavities 31 and the fifth collecting cavities 32 are not communicated with each other, all the fourth collecting cavities 31 are not communicated with each other, and all the fifth collecting cavities 32 are not communicated with each other inside the second collecting piece 3. The inner cavity of the first heat exchange piece 11 is communicated with the first manifold 21 and the fourth manifold 31, the inner cavity of the second heat exchange piece 12 is communicated with the fourth manifold 31 and the third manifold 23, the inner cavity of the third heat exchange piece 13 is communicated with the third manifold 23 and the fifth manifold 32, and the inner cavity of the fourth heat exchange piece 14 is communicated with the fifth manifold 32 and the second manifold 22.

Therefore, the heat exchanger provided by the embodiment of the application comprises at least two heat exchange assemblies, at least two first manifold blocks and at least two second manifold blocks, the inner cavities of one first manifold block, one second manifold block and one heat exchange assembly can be communicated to form a four-flow path, all third manifolds 23 are not communicated with each other inside the first manifold 2, all fourth manifolds 31 are not communicated with each other inside the second manifold 3, and all fifth manifolds 32 are not communicated with each other inside the second manifold 3. When the heat exchanger is in a working state, the heat exchange medium is converted from the first flow to the second flow, from the second flow to the third flow and from the third flow to the fourth flow, the heat exchange medium is distributed through the fourth manifold 31, the third manifold 23 and the fifth manifold 32 only when entering the first flow, the heat exchange medium does not need to be redistributed during the flow conversion, the distribution frequency of the heat exchange medium is reduced, and therefore the heat exchange efficiency is improved.

When the heat exchanger is in an operating state, the phase state of the second medium can be gradually changed along with the flowing of the second medium in the heat exchanger and the heat exchange of other media. If the problem of uneven distribution during each flow conversion is specifically improved by considering the different states of the second medium during each flow conversion, the structural design of the first collecting member 2 and the second collecting member 3 is complicated, and the manufacturing is inconvenient. If the problem of uneven distribution during each flow conversion is not optimized, the possibility of uneven distribution is high along with the increase of distribution times due to the change of the phase state of the second medium, so that the heat exchange efficiency of the heat exchanger is influenced. In the application, at least one of the fourth manifold 31 and the fifth manifold 32 for realizing the process conversion in the second manifold 3 is optimized, at least two of all the fourth manifolds 31 are not communicated with each other inside the second manifold 3, and at least two of all the fifth manifolds 32 are not communicated with each other inside the second manifold 3. Of course, if the two structural designs which are not communicated with each other are provided, the distribution frequency can be further reduced, and the heat exchange efficiency of the heat exchanger is better. If at least one of all the fourth manifolds 31 and all the fifth manifolds 32 are not communicated with each other inside the second collecting member 3, the number of times of distribution of the heat exchange medium in the second collecting member 3 can be further reduced, thereby having an effect of improving heat exchange efficiency.

It should be noted that the heat exchanger may be used as an evaporator or as a condenser, depending on the application of the heat exchanger in the thermal management system. The flow directions of the heat exchange media in the heat exchanger can be two, wherein the first type is a first manifold 21, an inner cavity of the first heat exchange piece 11, a fourth manifold 31, an inner cavity of the second heat exchange piece 12, a third manifold 23, an inner cavity of the third heat exchange piece 13, a fifth manifold 32, an inner cavity of the fourth heat exchange piece 14 and the second manifold 22 (the direction is shown by arrows in the figure 5); the second is the second manifold 22, the inner cavity of the fourth heat transfer element 14, the fifth manifold 32, the inner cavity of the third heat transfer element 13, the third manifold 23, the inner cavity of the second heat transfer element 12, the fourth manifold 31, the inner cavity of the first heat transfer element 11 and the first manifold 21 (in the opposite direction as indicated by the arrows in fig. 5). The embodiments of the present application will be described in detail with reference to the first flow direction as an example.

As shown in fig. 5 to 11, the first heat exchanging element 11 and the second heat exchanging element 12 are arranged in the first direction, and the third heat exchanging element 13 and the fourth heat exchanging element 14 are arranged in the first direction; the first heat exchange member 11 and the fourth heat exchange member 14 are arranged in the second direction, and the second heat exchange member 12 and the third heat exchange member 13 are arranged in the second direction; the first direction is vertical to the second direction, and the at least two heat exchange assemblies are arranged along the first direction or the second direction. For example, the first direction may be a height direction of the heat exchanger, and the second direction may be a width direction of the heat exchanger, so that the four heat exchange members in each heat exchange assembly form a two-row and two-column matrix arrangement form, and a four-flow arrangement of the second medium is realized.

Optionally, heat transfer member 1 is flat pipe, that is to say, the length of heat transfer member 1 is greater than the width, the width of heat transfer member 1 is greater than thickness, the long limit of the cross section of heat transfer member 1 is greater than the minor face, it has a plurality of circulation passageways of arranging along the long limit direction of flat pipe to distribute in heat transfer member 1, the both ends of circulation passageway run through the both ends of heat transfer member respectively, the second medium flows in the circulation passageway that sets up in heat transfer member 1, the area of contact of second medium and heat transfer member 1 has been increased, the heat exchange efficiency of second medium has been improved. In the embodiment of the present application, the first heat exchanging element 11, the second heat exchanging element 12, the third heat exchanging element 13, and the fourth heat exchanging element 14 are all in the same specification, that is, the external specification and the internal flow passage are all in the same specification. In some other embodiments, the first heat exchanging element 11, the second heat exchanging element 12, the third heat exchanging element 13 and the fourth heat exchanging element 14 in each heat exchanging assembly may have different specifications, or at least one heat exchanging element 1 in each heat exchanging assembly may be different from the other heat exchanging elements 1. Because the heat exchanger is in operating condition, the second medium can take place the phase change, carries out the differentiation design with the specification of first heat transfer 11, second heat transfer 12, third heat transfer 13 and fourth heat transfer 14, can match the heat transfer ability of each heat transfer 1 with the second medium heat transfer demand of every flow to be favorable to further promoting heat exchange efficiency.

Optionally, the first direction is the thickness direction of flat pipe, and the second direction is the width direction of flat pipe. Optionally, the at least two heat exchange assemblies may be arranged along the first direction, and the number of the heat exchange assemblies may be increased without changing the height of the heat exchanger, thereby improving the heat exchange efficiency.

In the present embodiment, the first collecting member 2 includes a first body member 24, a second body member 25, and a third body member 26. The second main body piece 25 is arranged on one side of the first main body piece 24, which is far away from the heat exchange assembly, and is connected with the first main body piece 24; the third body member 26 is disposed on a side of the first body member 24 facing the heat exchange assembly and is connected to the first body member 24. In this embodiment, the first main body piece 24, the second main body piece 25, and the third main body piece 26 are all plate-shaped structures, the first collecting piece 2 is a three-layer structure formed by stacking the second main body piece 25, the first main body piece 24, and the third main body piece 26, and only through holes with corresponding shapes need to be machined on the first main body piece 24 as needed, and the second main body piece 25 and the third main body piece 26 are respectively connected to two sides of the first main body piece 24, so that the first collecting piece 2 can be more easily machined to form a plurality of cavity-shaped structures which are not communicated with each other.

Further, as shown in fig. 12, the first body member 24 includes a first hole 241, a second hole 242, and a third hole 243 spaced from each other, a spacing rib is provided between each of the first hole 241, the second hole 242, and the third hole 243, and the first hole 241, the second hole 242, and the third hole 243 penetrate through the first body member 24 in the thickness direction of the first body member 24. The inner cavity of the first heat exchange member 11 communicates with the first hole 241, the inner cavity of the fourth heat exchange member 14 communicates with the second hole 242, and the inner cavities of the second heat exchange member 12 and the third heat exchange member 13 communicate with the third hole 243.

In this embodiment, the first bore 241 constitutes the first manifold 21, that is, the bore wall of the first bore 241, the second body member 25 and the third body member 26 together enclose the first manifold 21. The second bore 242 defines the second manifold 22, i.e., the bore wall of the second bore 242, the second body member 25, and the third body member 26 cooperate to define the second manifold 22. The third aperture 243 constitutes the third manifold 23, that is, the aperture wall of the third aperture 243, the second body member 25 and the third body member 26 together enclose the third manifold 23. In other embodiments, such as a four-layer plate configuration, the first aperture 241 may form part of either the first manifold 21, the second aperture 242 may form part of the second manifold 22, and the third aperture 243 may form part of the third manifold 23.

The third main body 26 includes first mounting holes 261 corresponding to the heat exchanging elements 1, wherein the first mounting holes 261 are smaller than the first, second and third holes 241, 242 and 243. The first mounting hole 261 penetrates the third body member 26 in the thickness direction of the third body member 26, the end portion of the heat exchanging element 1 is partially received in the first mounting hole 261, and the outer wall surface of the heat exchanging element 1 is sealingly connected to the wall of the hole forming the first mounting hole 261, thereby connecting the heat exchanging element to the first current collecting member 2. The end face of the heat exchange element 1 may be located in the first mounting hole 261, or may be flush with the side face of the third body 26 facing the first body 24, or may pass through the first mounting hole 261 and be located in each header cavity of the first body 24, as long as the heat exchange element 1 can be fixed to the first header 2, and the cavity of the heat exchange element 1 is communicated with the cavity of the first header 2.

In another embodiment, the first manifold member 2 may be provided in a two-layer configuration, where the first body member 24 is integral with the second body member 25, or the first body member 24 is integral with the third body member 26.

In yet another embodiment, the first manifold 2 may be provided in a four-layer configuration, in which case an intermediate member may be added between the first body member 24 and the second body member 25, with both sides of the intermediate member being sealingly connected to the first body member 24 and the second body member 25, respectively, and the intermediate member including an aperture therein corresponding to the aperture in the first body member 24, the aperture in the intermediate member being larger in size than the aperture in the first body member 24. Or an intermediate piece is added between the first body piece 24 and the third body piece 26, two sides of the intermediate piece are respectively connected with the first body piece 24 and the third body piece 26 in a sealing way, the intermediate piece comprises a hole corresponding to the hole on the first body piece 24, and the size of the hole on the intermediate piece is smaller than that of the hole on the first body piece 24. Through increasing the intermediate member, make the hole on the intermediate member and the hole on the first main part 24 constitute each manifold together to the size of the hole on the intermediate member is different with the size of the hole on the first main part 24, can make each manifold form the stair structure, that is to say, along the direction that is close to heat transfer piece 1, the aperture of manifold reduces gradually, thereby plays the effect of acceleration rate, makes the flow of heat transfer medium more smooth and easy.

As shown in fig. 13, the second manifold member 3 includes a fourth body member 33, a fifth body member 34, and a sixth body member 35. The fifth main body part 34 is arranged on one side of the fourth main body part 33, which is far away from the heat exchange assembly, and is connected with the fourth main body part 33; the sixth main body 35 is disposed on a side of the fourth main body 33 facing the heat exchange assembly, and is connected to the fourth main body 33. In this embodiment, the fourth main body element 33, the fifth main body element 34 and the sixth main body element 35 are plate-shaped structures, the second collecting member 3 is a three-layer structure formed by stacking the fifth main body element 34, the fourth main body element 33 and the sixth main body element 35, only a through hole with a corresponding shape needs to be machined in the fourth main body element 33 as required, and the fifth main body element 34 and the sixth main body element 35 are respectively connected to two sides of the fourth main body element 33, so that the second collecting member 3 can be more easily machined to form a plurality of cavity-shaped structures which are not communicated with each other. The second current collector 3 may also be provided in a two-layer plate-like structure or a four-layer plate-like structure, similarly to the first current collector 2.

Furthermore, the fourth body 33 includes a fourth hole 331 and a fifth hole 332 spaced from each other, a spacing rib is disposed between the fourth hole 331 and the fifth hole 332, and the fourth hole 331 and the fifth hole 332 respectively penetrate through the fourth body 33 along the thickness direction of the fourth body 33; the inner cavity of the first heat exchange member 11 and the inner cavity of the second heat exchange member 12 communicate with the fourth hole 331, and the inner cavity of the third heat exchange member 13 and the inner cavity of the fourth heat exchange member 14 communicate with the fifth hole 332.

In this embodiment, fourth bore 331 forms fourth manifold 31, that is, the bore walls of fourth bore 331, fifth body member 34, and sixth body member 35 collectively define fourth manifold 31; fifth bore 332 forms fifth manifold 32, that is, the bore walls of fifth bore 332, fifth body member 34, and sixth body member 35 collectively define fifth manifold 31. In other embodiments, fourth aperture 331 forms a portion of fourth manifold 31 and fifth aperture 332 forms a portion of fifth manifold 32.

The sixth body 35 includes second mounting holes 351 corresponding to the heat exchanging elements 1 one by one, the diameter of the second mounting holes 351 is smaller than the size of the fourth holes 331 and the fifth holes 332, and the second mounting holes 351 penetrate through the sixth body 35 along the thickness direction of the sixth body 35. The end of the heat exchange member 1 is at least partially received in the second receiving hole 351, and the outer wall surface of the heat exchange member 1 is hermetically connected to the wall of the hole forming the second receiving hole 351, thereby connecting the heat exchange member 1 to the second current collector 3. The end face of the heat exchange member 1 may be flush with one side face of the sixth body member 35 close to the fourth body member 33, may be located in the second mounting hole 351, or may be accommodated in each header chamber of the fourth body member 33, as long as the heat exchange member 1 can be fixed to the second header 3, and the inner chamber of the heat exchange member 1 communicates with the inner chamber of the second header 3.

In some embodiments, referring to fig. 14 and 15, where each heat exchange assembly is arranged in a first direction, two adjacent heat exchange assemblies may be arranged in a mirror image, and correspondingly, two adjacent first manifold groups are arranged in a mirror image. The direction indicated by the arrow in the figure is the flowing direction of the heat exchange medium when the heat exchanger is in an operating state, the first heat exchange member 11 is used as the first flow path, and the fourth heat exchange member is used as the fourth flow path. Specifically, along the first direction, two adjacent heat exchange assemblies include four layers, the first layer includes a second heat exchange member 12 and a third heat exchange member 13 (corresponding to a third manifold 23), the second layer includes a first heat exchange member 11 (corresponding to a first manifold 21) and a fourth heat exchange member 14 (corresponding to a second manifold 22), the third layer includes a first heat exchange member 11 (corresponding to the first manifold 21) and a fourth heat exchange member 14 (corresponding to the second manifold 22), and the fourth layer includes a second heat exchange member 12 and a third heat exchange member 13 (corresponding to the third manifold 23). Or, the first layer is the first heat exchange member 11 (corresponding to the first manifold 21) and the fourth heat exchange member 14 (corresponding to the second manifold 22), the second layer is the second heat exchange member 12 and the third heat exchange member 13 (corresponding to the third manifold 23), the third layer is the second heat exchange member 12 and the third heat exchange member 13 (corresponding to the third manifold 23), and the fourth layer is the first heat exchange member 11 (corresponding to the first manifold 21) and the fourth heat exchange member 14 (corresponding to the second manifold 22).

In some other embodiments, referring to fig. 16 and 17, the heat exchange assemblies are arranged along the first direction, and the distribution of the heat exchange assemblies may be identical, that is, along the arrangement direction of the heat exchange assemblies, the first heat exchange elements 11 are arranged alternately with the second heat exchange elements 12, and the third heat exchange elements 13 are arranged alternately with the fourth heat exchange elements 14. It can also be said that one heat exchange assembly is translated a distance in a first direction to form another heat exchange assembly, and accordingly, the first manifold groups can be distributed in the same manner. The direction indicated by the arrow in the figure is the flow direction of the heat exchange medium when the heat exchanger is in an operating state, the first heat exchange member 11 is used as the first flow path, and the fourth heat exchange member is used as the fourth flow path. Specifically, along the first direction, two adjacent heat exchange assemblies include four layers, the first layer is a second heat exchange piece 12 and a third heat exchange piece 13 (corresponding to a third manifold 23), the second layer is a first heat exchange piece 11 (corresponding to a first manifold 21) and a fourth heat exchange piece 14 (corresponding to a second manifold 22), the third layer is a second heat exchange piece 12 and a third heat exchange piece 13 (corresponding to a third manifold 23), and the fourth layer is a first heat exchange piece 11 (corresponding to the first manifold 21) and a fourth heat exchange piece 14 (corresponding to the second manifold 22).

As shown in fig. 14 to 17, the number of the heat exchange members 1 included in the heat exchange core provided in the embodiment of the present application is an integral multiple of four, and the heat exchange core includes only four flow paths. Along the direction from top to bottom, two adjacent rows in fig. 14 include one long groove and two short grooves, or two adjacent rows include two short grooves and one long groove, corresponding to the two i-shaped grooves arranged in the transverse direction in fig. 15, and a four-flow path is formed after the two i-shaped grooves are connected through the heat exchange member 1. In the top-down direction, two adjacent rows in fig. 16 include a long groove and two short grooves, which correspond to the two i-shaped grooves arranged in the transverse direction in fig. 17, and form a four-flow path after being connected by the heat exchange member.

As shown in fig. 18 and 19, the number of the heat exchange members 1 included in the heat exchange core provided in the embodiment of the present application may not be an integral multiple of four, and the heat exchange core may include two flow paths in addition to the four flow paths. Along the direction from top to bottom, two adjacent rows in fig. 18 include one long groove and two short grooves, or two adjacent rows include two short grooves and one long groove, corresponding to the two i-shaped grooves arranged transversely in fig. 19, and form a four-flow path after being connected by the heat exchange member; the lowermost first manifold 21 and the lowermost second manifold 22 in fig. 18, the lowermost sixth manifold 36 in fig. 19, and the sixth manifold 36 are configured to communicate with the third manifold 23, between the first manifold 21 and the sixth manifold 36, and between the second manifold 22 and the sixth manifold 36, respectively, via heat exchange members, thereby forming two flow paths. The direction indicated by the arrow in the figure is the flow direction of the heat exchange medium when the heat exchanger is in an operating state, the first heat exchange member 11 is used as the first flow path, and the fourth heat exchange member is used as the fourth flow path.

In this embodiment, the first collecting member 2 includes a first collecting pipe 251 and a second collecting pipe 253, both the first collecting pipe 251 and the second collecting pipe 253 are connected to the second main body 25, the first collecting pipe 251 and the second collecting pipe 253 are located on a side of the second main body 25 away from the first main body 24, and the first collecting pipe 251 and the second collecting pipe 253 are respectively communicated with the outside of the first collecting member 2. One end of the first collecting pipe 251 is used as an inlet of the second medium, and the other end of the first collecting pipe 251 is closed, so that the second medium flows into the first collecting member 2; one end of the second header 253 serves as an outlet for the second medium, and the other end of the second header 253 is closed, so that the second medium flows out of the inside of the first header 2. The first manifold 251 and the second manifold 253 may be integrally formed with the second body member 25 to reduce the number of interfaces for interconnection, improve sealing performance, and prevent leakage of the second medium; the first manifold 251 and the second manifold 253 may also be separately formed and then fixedly attached to the second body member 25.

Referring to fig. 10, 12 and 14, the first headers 251 extend along the arrangement direction of the respective first manifolds 21, and the respective first manifolds 21 communicate with the tube cavities of the first headers 251. The second body member 25 includes a first through hole 252, the first through hole 252 communicates the first manifold 21 with the lumen of the first manifold 251, and the second medium in the first manifold 251 flows into the first manifold 21 through the first through hole 252. The structure enables the plurality of first manifolds 21 to be communicated with the pipe cavity of the same first collecting pipe 251, that is, the second medium is distributed through the same first collecting pipe 251, so that the second medium flows into each first manifold 21 and then into each first heat exchange piece 11, and the second medium can be distributed in each heat exchange assembly.

Referring to fig. 11, 12 and 14, the second headers 253 extend along the arrangement direction of the second manifolds 22, and the second manifolds 22 communicate with the tube cavities of the second headers 253; the second body member 25 includes a second through hole 254, the second through hole 254 communicates the second manifold 22 with the lumens of the second manifold 253, and the second media in each second manifold 22 flows into the second manifold 253 through the second through hole 254.

In this embodiment, the size of the first through hole 252 is smaller than that of the second through hole 254, and since the phase state of the second medium in the heat exchanger changes when the heat exchanger is in an operating state, the first through hole 252 and the second through hole 254 are set to different sizes, so that the second medium has different flow speeds when passing through the first through hole 252 and the second through hole 254, thereby being beneficial to improving the heat exchange efficiency of the heat exchanger. Specifically, when the heat exchanger is used as an evaporator, the second medium flows into the heat exchanger from the first collecting pipe 251 and flows out of the heat exchanger from the second collecting pipe 253, and because the second medium enters the first flow path after passing through the first through hole 252 from the first collecting pipe 251, the second medium is in a liquid state or a gas-liquid two-phase state, and the second medium is easy to be in a spraying state by arranging the first through hole 252 with a smaller size, which is more beneficial to the uniform distribution of the second medium; after the fourth flow path is completed, the second medium passes through the second through hole 254 and flows into the second header 253, and at this time, the second medium is in a gaseous state, and the flow resistance of the second medium is favorably reduced by providing the second through hole 254 with a larger size.

Referring to fig. 20 to 22, in one embodiment, the first through holes 252 are circular holes, and the number of the first through holes 252 communicating with each first manifold 21 is one, two, or more. When the number of the first through holes 252 communicating with each first manifold 21 is two or more, the first through holes 252 are distributed at intervals along the length direction (i.e., the left-right direction shown in fig. 20) of the first manifold 21, and the two first through holes 252 at the edge are respectively tangent to the inner wall of the first header 251. Likewise, the second through-holes 254 are circular holes, and the number of the second through-holes 254 communicating with each second manifold 22 is one, two, or more. When the number of the second through holes 254 communicated with each second manifold 22 is two or more, the second through holes 254 are distributed at intervals along the length direction of the second manifold 22, and the two second through holes 254 at the edge are respectively tangent to the inner wall of the second header 253. Wherein the diameter of the first through hole 252 is smaller than the diameter of the second through hole 254. Optionally, the first through hole 252 has a diameter of

Second bore 254 has a diameter +>

Referring to fig. 23 and 24, in another embodiment, the first through hole 252 is shaped as a kidney-shaped hole, the first through hole 252 extends along the length direction of the first manifold 21 (i.e., the left-right direction in fig. 23), and the arc-shaped sections at the two ends of the first through hole 252 are respectively tangent to the inner wall of the first header 251 (see tangent position 256 in fig. 24). Similarly, the second through hole 254 is shaped like a kidney-shaped hole, the second through hole 254 extends along the length direction (i.e., the left-right direction shown in fig. 23) of the second manifold 22, and the arc-shaped sections at the two ends of the second through hole 254 are respectively tangent to the inner wall of the second manifold 253. Wherein, the width of the first through hole 252 is smaller than the width of the second through hole 254. Optionally, the width of the first through hole 252 is 2mm, and the width of the second through hole 254 is 3.5mm. Similarly to the circular holes, the number of kidney-shaped holes communicating with each first manifold 21 or each second manifold 22 may also be two or more.

As shown in FIG. 14, the third manifold 23 includes a first region 231 and a second region 232 in communication with each other, and in this embodiment, the third manifold 23 extends in the second direction, the first region 231 and the second region 232 are aligned in the second direction, the first region 231 communicates with the internal cavity of the second heat exchanging element 12, and the second region 232 communicates with the internal cavity of the third heat exchanging element 13. In the second flow path, the second medium flows from the inner cavity of the second heat exchange element 12 into the first region 231; in the third manifold 23, the second medium flows from the first region 231 to the second region 232 in the direction indicated by the arrow in the figure, thereby completing the conversion from the second flow path to the third flow path; then, the second medium flows into the inner cavity of the third heat exchange member 13 from the second region 232, and the third flow path is started.

As shown in fig. 25 and 26, a first necking structure 233 is included between the first region 231 and the second region 232, the width of the first necking structure 233 is smaller than the widths of the first region 231 and the second region 232, and the liquid flow speed can be increased by providing the first necking structure 233, so that the second medium can rapidly flow from the first region 231 to the second region 232. Wherein a protrusion 234 may be provided in the third manifold 23 to form a first necked-down structure 233 of smaller width, the protrusion 234 may be provided in any suitable shape, such as rectangular, triangular, etc. Optionally, the protrusion 234 is configured to be an arc-shaped structure, and at the first throat structure 233, the width of the third manifold 23 gradually decreases and then gradually increases, so as to avoid a sudden width change in the third manifold 23, and make the flow of the second medium smoother.

As shown in fig. 15, the fourth manifold 31 includes a third region 311 and a fourth region 312 that are communicated with each other, and in this embodiment, the third region 311 and the fourth region 312 respectively extend in the second direction, the third region 311 and the fourth region 312 are arranged in the first direction, the third region 311 is communicated with the inner cavity of the first heat exchanging element 11, and the fourth region 312 is communicated with the inner cavity of the second heat exchanging element 12. In the first flow path, the second medium passes through the first through hole 252 of the first collecting pipe 251 to enter the inner cavity of the first heat exchange member 11, and then flows into the third region 311 along the inner cavity of the first heat exchange member 11; in the fourth manifold 31, the second medium flows from the third region 311 to the fourth region 312 in the direction indicated by the arrow in the figure, completing the conversion from the first flow path to the second flow path; then, the second medium flows into the inner cavity of the second heat exchange member 12 from the fourth area 312, and the second flow path is started.

The third region 311 and the fourth region 312 include a second throat structure 313, the size of the second throat structure 313 in the second direction is smaller than the size of the third region 311 and the fourth region 312 in the second direction, for example, a protrusion may be provided in the fourth manifold 31 to form the second throat structure 313 with a smaller width, the liquid flow speed is increased by providing the second throat structure 313 to enable the second medium to flow from the third region 311 into the fourth region 312 quickly, and the protrusion may be provided in any suitable shape, for example, a rectangle, a triangle, an arc, or the like.

With continued reference to FIG. 15, the fifth manifold 32 includes fifth and sixth regions 321 and 322, respectively, and in this embodiment, the fifth and sixth regions 321 and 322 extend in the second direction, the fifth and sixth regions 321 and 322 are aligned in the first direction, the fifth region 321 faces the third heat transfer element 13, and the sixth region 322 faces the fourth heat transfer element 14. In the third flow path, the second medium flows from the inner cavity of the third heat exchange element 13 into the fifth region 321; in the fifth manifold 32, the second medium flows from the fifth region 321 to the sixth region 322 in the direction indicated by the arrow in the figure, completing the conversion from the third flow path to the fourth flow path; then, the second medium flows from the sixth area 322 into the inner cavity of the fourth heat exchanging element 14, and then flows into the second manifold 253 through the second through hole 254 of the second manifold 253, thereby completing the fourth process.

The fifth and sixth regions 321, 322 comprise a third necked structure 323, the third necked structure 323 has a dimension in the second direction which is smaller than the dimension of the fifth and sixth regions 321, 322 in the second direction, e.g. a protrusion may be provided in the fifth manifold 32, thereby forming a third necked structure 323 having a smaller width, the liquid flow velocity is increased by providing the third necked structure 323, enabling the second medium to flow rapidly from the fifth region 321 into the sixth region 322, the protrusion may be provided in any suitable shape, e.g. rectangular, triangular or arc-shaped.

In this embodiment, the second throat structure 313 is centrally disposed in the fourth manifold 31 and the third throat structure 323 is centrally disposed in the fifth manifold 32.

In another embodiment, referring to fig. 27 and 28, the second necked structure 313 may be offset from the center of the fourth manifold 31, e.g., the second necked structure 313 may be offset in a direction away from the fifth manifold 32, and the second necked structure 313 may be offset in a direction closer to the fifth manifold 32; the second necked down structures 313 of adjacent fourth manifolds 31 may be aligned with each other (see fig. 27) and the second necked down structures 313 of adjacent fourth manifolds 31 may be offset from each other (see fig. 28) to reduce weld distortion and increase weld strength.

Likewise, the third necked structure 323 may be offset from the center of the fifth manifold 32, for example, the third necked structure 323 may be offset in a direction away from the fourth manifold 31, and the third necked structure 323 may be offset in a direction towards the fourth manifold 31; the third necked structures 323 in adjacent ones of the fifth manifolds 32 may be aligned with each other (see fig. 27) and the second necked structures 313 in adjacent ones of the fifth manifolds 32 may be offset from each other (see fig. 28) to reduce weld distortion and increase weld strength.

The third reducing structure 323 and the second reducing structure 313 are arranged in mirror symmetry, that is, the offset directions of the third reducing structure 323 and the second reducing structure 313 are opposite; for example, when the second necked structure 313 is offset in a direction away from the fifth manifold 32, the third necked structure 323 is offset in a direction away from the fourth manifold 31.

Further, as shown in fig. 29 to 31, the position of the fifth body member 34 opposite the fourth manifold 31 and the position of the fifth body member 34 opposite the fifth manifold 32 include a convex hull 341, the convex hull 341 is convex in a direction away from the fourth body member 33, and a side of the convex hull 341 facing the fourth body member 33 is provided in a concave configuration. This configuration both enhances the structural strength of the fifth body member 34, preventing deformation of the fifth body member 34, and increases the volume of the fourth manifold 31 and the fifth manifold 32, thereby reducing the flow resistance of the second medium and facilitating the conversion between the two processes.

In this embodiment, the convex hull 341 is a part of the fifth body member 34 formed by a stamping process, and the convex hull 341 is a part of the fifth body member 34. In some other embodiments, the convex hull 341 can be formed separately and then fixedly attached to the fifth body member 34. In this case, a through hole is required to be formed in the fifth body member 34 for communicating the cavity of the convex hull 341 with the fourth manifold 31 or the fifth manifold 32. The number of the convex hulls 341 is plural, and optionally, the convex hulls 341 may be formed separately and then fixedly connected to the fifth main body member 34, or at least two convex hulls 341 may be formed together and then fixedly connected to the fifth main body member 34.

Referring to fig. 32, another embodiment of the heat exchanger of the present application is provided, and the above embodiments of the present application are substantially the same, and the same parts are not repeated. This embodiment differs from the above-described embodiments in that the heat exchanger is an air-cooled heat exchanger, and the housing 6 is not provided for exchanging heat between the second medium and the air.

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

Claims (10)

1. A heat exchanger, comprising:

each heat exchange assembly comprises a first heat exchange piece, a second heat exchange piece, a third heat exchange piece and a fourth heat exchange piece;

the first collecting piece is arranged at the first end of the heat exchange assembly and comprises at least two first collecting module groups, each first collecting module group comprises a first collecting cavity, a second collecting cavity and a third collecting cavity, and the first collecting cavity, the second collecting cavity and the third collecting cavity are not communicated with each other inside the first collecting piece and are arranged at the first end of the heat exchange assembly

The second collecting piece is arranged at the second end of the heat exchange assembly and comprises at least two second collecting cavity groups, each second collecting cavity group comprises a fourth collecting cavity and a fifth collecting cavity, and the fourth collecting cavity and the fifth collecting cavity are not communicated with each other in the second collecting piece;

the inner cavity of the first heat exchange piece is communicated with the first manifold and the fourth manifold, the inner cavity of the second heat exchange piece is communicated with the fourth manifold and the third manifold, the inner cavity of the third heat exchange piece is communicated with the third manifold and the fifth manifold, and the inner cavity of the fourth heat exchange piece is communicated with the fifth manifold and the second manifold;

at least two of all the fourth manifolds do not communicate with each other inside the second manifold, or at least two of all the fifth manifolds do not communicate with each other inside the second manifold.

2. The heat exchanger of claim 1, wherein the first heat exchanging element and the second heat exchanging element are arranged in a first direction, and the third heat exchanging element and the fourth heat exchanging element are arranged in the first direction;

the first heat exchange piece and the fourth heat exchange piece are arranged along a second direction, and the second heat exchange piece and the third heat exchange piece are arranged along the second direction;

the first direction is perpendicular to the second direction, and at least two heat exchange assemblies are arranged along the first direction or the second direction.

3. The heat exchanger of claim 1 or 2, wherein the first header member comprises a first body member, a second body member, and a third body member;

the second main body piece is positioned on one side of the first main body piece, which is far away from the heat exchange assembly, and the second main body piece is connected with the first main body piece;

the third main body piece is arranged on one side, facing the heat exchange assembly, of the first main body piece, the third main body piece is connected with the first main body piece, and the heat exchange assembly is connected with the third main body piece in a sealing mode.

4. The heat exchanger of claim 3, wherein the first body member includes first, second and third spaced apart apertures that each extend through the first body member in a thickness direction of the first body member;

the inner cavity of the first heat exchange piece is communicated with the first hole, the inner cavity of the fourth heat exchange piece is communicated with the second hole, and the inner cavity of the second heat exchange piece is communicated with the inner cavity of the third heat exchange piece.

5. The heat exchanger of claim 3, wherein said first manifold includes a first manifold and a second manifold, said first manifold and said second manifold each being located on a side of said second body member facing away from said first body member, said first manifold and said second manifold each being connected to said second body member, said first manifold extending along a direction of alignment of said respective first manifolds, said second manifold extending along a direction of alignment of said respective second manifolds;

and each first manifold is communicated with the pipe cavity of the first collecting pipe, and each second manifold is communicated with the pipe cavity of the second collecting pipe.

6. The heat exchanger of claim 5, wherein said second body member includes a first through-hole and a second through-hole, said first through-hole communicating said first manifold with said first manifold lumen, said second through-hole communicating said second manifold with said second manifold lumen, said first through-hole being smaller in size than said second through-hole.

7. The heat exchanger of claim 1 or 2, wherein the second manifold member comprises a fourth body member, a fifth body member, and a sixth body member;

the fifth main body piece is arranged on one side, away from the heat exchange assembly, of the fourth main body piece, and the fifth main body piece is connected with the fourth main body piece;

the sixth main body piece is arranged on one side, facing the heat exchange assembly, of the fourth main body piece, the sixth main body is connected with the fourth main body piece, and the heat exchange assembly is connected with the sixth main body piece in a sealing mode.

8. The heat exchanger of claim 7, wherein the fourth body member includes fourth and fifth spaced apart apertures extending therethrough in a thickness direction of the fourth body member, respectively;

the inner cavity of the first heat exchange piece and the inner cavity of the second heat exchange piece are communicated with the fourth hole, and the inner cavity of the third heat exchange piece and the inner cavity of the fourth heat exchange piece are communicated with the fifth hole.

9. The heat exchanger of claim 2, wherein at least two of said heat exchange assemblies are arranged in said first direction;

two adjacent heat exchange assemblies are arranged in a mirror image manner; or, along the first direction, the first heat exchange pieces and the second heat exchange pieces are alternately arranged one by one, and the third heat exchange pieces and the fourth heat exchange pieces are alternately arranged one by one.

10. The heat exchanger of claim 1, wherein all of said fourth manifolds do not communicate with each other within said second flow collection member, or wherein all of said fifth manifolds do not communicate with each other within said second flow collection member.

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