CN117722878A - Heat exchanger - Google Patents

Abstract

A heat exchanger comprises a first collecting part, a heat exchange part and a baffle part, wherein the first collecting part is positioned at one side of the heat exchange part in the length direction and is provided with a first collecting cavity, and at least one baffle part is positioned at the first collecting cavity; the first chamber part is provided with a first chamber, the second chamber part is provided with a second chamber, the first manifold comprises a first chamber and a second chamber, and the baffle part is positioned between the first chamber and the second chamber and is used for making the first chamber not communicated with the second chamber; the baffle part comprises a baffle plate, and the baffle plate comprises at least one bending part which is curved in an arc shape. When the heat exchanger works, the liquid in the first cavity and the liquid in the second cavity have temperature difference, and thermal stress generated by the temperature difference acts on the heat exchange tube and is transferred to the main board by the heat exchange tube, and then transferred to the arc-shaped bending part by the main board, and the arc-shaped bending part is easy to deform to release the thermal stress.

Description

Heat exchanger

Technical Field

The application relates to the technical field of thermal management, in particular to a heat exchanger.

Background

Such as during vehicle travel, the electric motor or the internal combustion engine may generate heat that is exchanged via a radiator. The radiator mainly radiates heat through the core, and the core is composed of a plurality of radiating pipes. The liquid inlet chamber and the liquid outlet chamber of part of the radiator are positioned at one end of the heat exchanger and are separated by a baffle plate, so that the liquid inlet chamber and the liquid outlet chamber are not communicated. The liquid with lower temperature enters some heat exchange tubes through the liquid inlet chamber to exchange heat, and the liquid after heat exchange enters other heat exchange tubes, flows into the liquid outlet chamber from the chambers of other heat exchange tubes, and flows out of the liquid outlet chamber. The liquid in the liquid inlet chamber and the liquid in the liquid outlet chamber form a temperature difference, which causes thermal stress to be formed between the liquid inflow end of some heat exchange tubes and the liquid outflow end of other heat exchange tubes, and the thermal stress easily deforms and damages a main plate connected with the heat exchange tubes.

Disclosure of Invention

In order to solve at least one defect of the related art, the application adopts the following technical scheme:

a heat exchanger comprises a first collecting part, a heat exchange part and a baffle part, wherein the first collecting part is positioned at one side of the heat exchange part in the length direction and is provided with a first collecting cavity, and at least one baffle part is positioned at the first collecting cavity;

the first collecting part comprises a first chamber part and a second chamber part, and at least part of the baffle part is positioned between the first chamber part and the second chamber part;

the first chamber part is provided with a first chamber, the second chamber part is provided with a second chamber, the first manifold comprises a first chamber and a second chamber, and the baffle part is positioned between the first chamber and the second chamber and is used for making the first chamber not communicated with the second chamber;

the baffle part comprises a baffle plate, and the baffle plate comprises at least one bending part which is curved in an arc shape.

The baffle plate comprises at least one bending part, wherein the bending part is in arc bending, and the arc bending part is easy to deform. When the heat exchanger works, the liquid in the first cavity and the liquid in the second cavity have temperature difference, and thermal stress generated by the temperature difference acts on the heat exchange tube and is transferred to the main board by the heat exchange tube, and then transferred to the arc-shaped bending part by the main board, and the arc-shaped bending part deforms to release the thermal stress, so that the influence of the thermal stress on the main board is reduced, and the main board is protected.

A heat exchanger comprises a first collecting part, a heat exchange part and a baffle part, wherein the first collecting part is positioned at one side of the heat exchange part in the length direction and is provided with a first collecting cavity, and at least one baffle part is positioned at the first collecting cavity;

the first collecting part comprises a first chamber part and a second chamber part, and at least part of the baffle part is positioned between the first chamber part and the second chamber part; the first chamber part is provided with a first chamber, the second chamber part is provided with a second chamber, the first manifold comprises a first chamber and a second chamber, and the baffle part is positioned between the first chamber and the second chamber;

the baffle part is also provided with a baffle cavity, the heat exchange part comprises a plurality of heat exchange pipes, the cavity of at least one heat exchange pipe is communicated with the first cavity, the cavity of at least one heat exchange pipe is communicated with the second cavity, and the cavity of at least one heat exchange pipe is communicated with the baffle cavity.

The baffle part of the embodiment of the application is provided with a baffle cavity, and the baffle cavity is communicated with at least one heat exchange tube. When the heat exchanger works, the liquid temperature in the baffle cavity is between the liquid temperature in the first cavity and the liquid temperature in the second cavity, so that the liquid temperature gradient in the first cavity and the liquid temperature gradient in the second cavity are reduced, the thermal stress acting on the heat exchange tube is reduced, and the influence of deformation of the heat exchange tube on the main board is reduced, so that the main board is protected.

Drawings

FIG. 1 shows a schematic elevational view of a heat exchanger in an embodiment of the present application;

FIG. 2 shows a schematic cross-sectional elevation of a heat exchanger in an embodiment of the present application;

FIG. 3 is an enlarged schematic view of the portion A of FIG. 2;

FIG. 4 shows a schematic cross-sectional perspective view of a heat exchanger in an embodiment of the present application;

FIG. 5 is an enlarged schematic view of the portion B of FIG. 4;

FIG. 6 is a schematic perspective view of a baffle in an embodiment of the present application;

FIG. 7 is a schematic elevational view of the barrier portion of FIG. 6;

FIG. 8 is a schematic side view of the barrier of FIG. 6;

FIG. 9 is a schematic perspective view of a baffle according to yet another embodiment of the present disclosure;

FIG. 10 is a schematic elevational view of the barrier portion of FIG. 9;

FIG. 11 is a schematic elevational view of a heat exchanger in accordance with another embodiment of the present application;

FIG. 12 is an enlarged schematic view of the portion of circle C shown in FIG. 11;

fig. 13 is a schematic perspective view of a heat exchanger according to a fourth embodiment of the present application;

fig. 14 is a schematic cross-sectional elevation view of a heat exchanger according to a fourth embodiment of the present application;

fig. 15 is an enlarged schematic view of the circle D shown in fig. 14.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.

The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the terms "first," "second," and the like, as used in the specification and the claims herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one; "plurality" means two and more than two numbers unless otherwise indicated. The terms "front," "lower," and/or "upper," and the like, are used herein for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded.

The heat exchanger according to the exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. The features of the examples and embodiments described below may be supplemented or combined with one another without conflict.

Fig. 1-12 illustrate heat exchangers in some embodiments of the present application. The heat exchanger can be used for a low-temperature radiator, namely a water chamber heat exchanger. The heat exchanger comprises a first current collecting part 1 and a heat exchanging part 3, wherein the first current collecting part 1 is connected with the heat exchanging part 3, and the first current collecting part 1 is positioned at one side of the heat exchanging part 3 in the length direction. Alternatively, the first current collecting portion 1 is brazed to the heat exchanging portion 3. The first manifold 1 has a first manifold 10. The heat exchange portion 3 includes a plurality of heat exchange tubes 31, and the first manifold 10 communicates with the chambers of at least some of the heat exchange tubes 31.

In some embodiments, the heat exchanger further comprises a second header 2, and the heat exchange portion 3 is connected to the second header 2. Alternatively, the heat exchanging part 3 is brazed to the second collecting part 2. The first current collecting portion 1 and the second current collecting portion 2 are located at different sides of the heat exchanging portion 3 in the length direction, and at least part of the heat exchanging portion 3 is located between the first current collecting portion 1 and the second current collecting portion 2. Alternatively, the first current collecting portion 1 is disposed in parallel with the second current collecting portion 2. The second manifold 2 has a second manifold 20, the second manifold 20 being in communication with the chambers of at least some of the heat exchange tubes 31.

Fig. 1 and 2 illustrate a heat exchange portion 3 in some embodiments of the present application, where the heat exchange portion 3 further includes a side plate 32 and fins 33, and the side plate 32 is located outside the heat exchange tube 31, so as to protect the heat exchange tube 31. Alternatively, the heat exchanging part 3 may include two side plates 32, the two side plates 32 being located at different sides in the length direction of the first collecting part 1, and the two side plates 32 being located at different sides in the length direction of the second collecting part 2. The first current collecting portion 1, the second current collecting portion 2, and the two side plates 32 form a square frame in which a plurality of heat exchanging pipes 33 are located.

Fins 33 are located between adjacent two heat exchange tubes 31 for enhancing heat exchange. Optionally, the fins 33 are brazed to the heat exchange tubes 31. It should be noted that, in some embodiments of the present application, only the fins are provided on one side of the heat exchanging portion 3, which is for illustration, as shown in fig. 1, and it should not be understood that the fins are only provided at this position, and the fins may be provided between each two heat exchanging pipes 31 of the plurality of heat exchanging pipes 31, or only between each adjacent two heat exchanging pipes 31 of some heat exchanging pipes 31, according to heat exchanging needs.

Fig. 1 to 8 show a heat exchanger in an embodiment of the present application, which further comprises a baffle 4. As shown in fig. 1, at least part of the barrier portion 4 is located on the first manifold 10 for dividing the first manifold 10 into two chambers that are not in communication with each other. For example, when the heat exchanger is a low temperature water chamber heat exchanger, the two chambers are a water inlet chamber and a water outlet chamber, respectively. Alternatively, the barrier portion 4 is brazed to the first header portion 1. In other embodiments, the barrier portion 4 is entirely located on the first manifold 10, i.e., the barrier portion 4 is brazed to the inner wall surface of the first manifold 10.

As shown in fig. 1 to 5, the first collecting portion 1 includes a first chamber portion 11 and a second chamber portion 12. The partition 4 is located between the first chamber 11 and the second chamber 12, i.e. the partition 4 divides the first header 1 into the first chamber 11 and the second chamber 12. Optionally, the baffle part 4 is located at the middle part of the length direction of the first collecting part 1, and when the heat exchanger works, the liquid forms a U-shaped loop in the heat exchanger, so that the heat exchange rate is improved, and the processing is convenient. Optionally, the first current collecting portion 1 is made of aluminum, and the baffle portion 4 is made of aluminum. Optionally, the barrier portion 4 is provided with a coating for brazing connection with the first current collecting portion 1. It will be appreciated that the barrier portion 4 and the first current collecting portion 1 may be glued, assembled and sealed by soft materials, ultrasonically welded, etc.

The first chamber portion 11 has a first chamber 110, the second chamber portion 12 has a second chamber 120, and the first manifold 10 includes the first chamber 110 and the second chamber 120. The partition 4 is located between the first chamber 110 and the second chamber 120, and is used to divide the first manifold 10 into the first chamber 110 and the second chamber 120, which are not communicated with each other. In an embodiment of the present application, the first collecting portion 1 further comprises an inlet portion 5 and an outlet portion 6, the inlet portion 5 having an inlet chamber 50 and the outlet portion 6 having an outlet chamber 60, the inlet chamber 50 being in communication with the first chamber 110 and the outlet chamber 60 being in communication with the second chamber 120. When the heat exchanger works, liquid enters the first chamber 110 through the inlet chamber 50, flows into the chambers of some heat exchange tubes through the first chamber 110, flows into the second manifold 20 after heat exchange by some heat exchange tubes, flows into the chambers of other heat exchange tubes 31 from the second manifold 20, flows into the second chamber 120 after heat exchange by other heat exchange tubes 31, and flows out of the heat exchanger through the outlet chamber 60, so that the liquid forms a U-shaped circulation loop.

In some embodiments, the first manifold portion 1 further includes a peripheral plate 13 and a main plate 14, the peripheral plate 13 being connected to the main plate 14, the first manifold 10 being located between the peripheral plate 13 and the main plate 14, the peripheral plate 13 and the main plate 14 surrounding the first manifold 10. The main plate 14 is connected to the plurality of heat exchange tubes 31, and further, the main plate 14 is connected to one side of the heat exchange tubes 31 in the longitudinal direction. In an embodiment of the present application, the first current collecting portion 1 further includes a first end portion 7 and a second end portion 8. The first end 7 and the second end 8 are respectively located at two sides of the main board 14 in the length direction. Alternatively, the first end portion 7 and the second end portion 8 are each square plate-like bodies. The first end part 7 is connected with one side of the circumferential plate 13 and one side of the main plate 14 in the length direction and is used for sealing one end of the first manifold 10; the second end 8 is connected with the other sides of the circumferential plate 13 and the main plate 14 in the length direction and is used for sealing the other end of the first manifold 10. That is, the circumferential plate 13, the main plate 14, the first end portion 7, and the second end portion 8 are connected to each other in this order, and define a first manifold. Alternatively, the main plate 14 is a substantially rectangular plate-like body. Optionally, the circumferential plate 13 is a bent plate-like body, the cross-sectional shape of which is square with rounded corners.

The main plate 14 includes a plurality of mounting holes 140 for the plurality of heat exchange tubes 31 to pass therethrough. The plurality of mounting holes 140 are penetrated in the thickness direction of the main board 14 and are aligned in the length direction of the main board 14. The number of the mounting holes 140 corresponds to the number of the plurality of heat exchange tubes 31. The mounting hole 140 corresponds to the circumferential dimension of one end of the heat exchange tube 31 in the longitudinal direction. Alternatively, one end of the heat exchange tube 31 in the length direction is inserted into the mounting hole 140, i.e., the open end of one side of the heat exchange tube 31 in the length direction is located at the first manifold 10, as shown in fig. 2 to 5.

In some embodiments, the second current collecting portion 2 has a rectangular parallelepiped shape, and its shape corresponds to that of the first current collecting portion 1.

In one embodiment of the present application, the baffle 4 includes a first baffle 41 and a second baffle 42, and the first baffle 41 and the second baffle 42 are disposed at intervals. Optionally, the first baffle 41 and the second baffle 42 are disposed in parallel. Along the length direction of the heat exchange tube 31, one side of the first baffle 41 in the length direction is in sealing connection with the peripheral plate 13, and the other side of the first baffle 41 in the length direction is in sealing connection with the main plate 14. One side of the second baffle plate 42 in the length direction is in sealing connection with the peripheral plate 13, and the other side of the second baffle plate 42 in the length direction is in sealing connection with the main plate 14. A portion of the first baffle 41 and the second baffle 42 are located in the first manifold 10.

Alternatively, the first barrier 41 and the second barrier 42 are each formed as a curved plate-like body. Specifically, the first barrier 41 includes a first curved portion 411, and the second barrier 42 includes a second curved portion 421. The first curved portion 411 and the second curved portion 421 are curved. Optionally, the first baffle 41 includes a plurality of continuous first bends 411, such as in one or more end-to-end S-shaped plate-like bodies. Optionally, the second baffle 42 includes a plurality of continuous second bends 421, such as in one or more end-to-end S-shaped plate-like bodies. For example, the heat exchanger is a low-temperature water chamber heat exchanger, when the heat exchanger works, cold water enters the first chamber 110 from the inlet cavity 50, then flows into the chambers of some heat exchange pipes, after heat exchange, the temperature of the cold water rises to hot water, the hot water flows into the second manifold 20, flows into other heat exchange pipes 31 from the second manifold 20, and flows into the second chamber 120 after heat exchange is continued; the heat exchange tube near one side of the baffle part 4 is a cold water inflow tube, the heat exchange tube 31 near the other side of the baffle part 4 is a hot water outflow tube, and the heat exchange tubes 31 positioned at two sides of the baffle part 4 are affected by thermal stress according to the principle of thermal expansion and contraction, so that deformation is generated, tensile stress generated by the deformation is transmitted to the main board 14 and is transmitted to the first bending part 411 and/or the second bending part 421 through the main board 14, and the first bending part 411 and/or the second bending part 421 are arc-shaped bending parts and are easy to deform so as to counteract the tensile stress, thereby protecting the main board 14 from deformation.

Optionally, the first bending portion 411 and the second bending portion 421 are symmetrically disposed to improve the stress balance. Alternatively, the first curved portion 411 and the second curved portion 421 have the same radius of curvature. Alternatively, the first curved portion 411 and the second curved portion 421 are curved in opposite directions.

It will be appreciated that the first baffle 41 may also include only one bend, either arcuate or continuously arcuate, for bending to relieve stress to protect the motherboard 14.

In an embodiment of the present application, as shown in fig. 5 to 8, the first baffle 41 includes a first connection portion 413, at least a portion of one side of the first connection portion 413 is connected to the circumferential plate 13 along the length direction of the heat exchange tube 31, the other side of the first connection portion 413 is connected to the first bending portion 411, and the first connection portion 413 is in a flat plate shape;

the first baffle 41 further includes a third connection portion 412, at least a portion of the third connection portion 412 is connected to the first bending portion 411 at one side thereof along the length direction of the heat exchange tube 31, and the other side of the third connection portion 412 is connected to the main plate 14. Optionally, the third connection portion 412 has a flat plate shape. Optionally, the end surface of the third connecting portion 412 is planar, so as to facilitate soldering connection with the motherboard 14.

In an embodiment of the present application, as shown in fig. 5 to 8, the second baffle plate 42 further includes a second connection portion 423, one side of the second connection portion 423 is connected to the circumferential plate 13 along the length direction of the heat exchange tube 31, the other side of the second connection portion 423 is connected to the second bending portion 421, and the second connection portion 423 has a flat plate shape. The second connection portion 423 has a flat plate shape.

The second baffle plate 42 further includes a fourth connection portion 422, one side of the fourth connection portion 422 is connected to the second bending portion 421 along the length direction of the heat exchange tube 31, the other side of the second connection portion 423 is connected to the main plate 14, and the fourth connection portion 422 has a flat plate shape. Optionally, the end surface of the fourth connecting portion 422 is planar, so as to facilitate soldering connection with the motherboard 14.

Optionally, the first connecting portion 413 and the second connecting portion 423 are symmetrically disposed, the third connecting portion 412 and the fourth connecting portion 422 are symmetrically disposed, and the first bending portion 411 and the second bending portion 421 are symmetrically disposed.

Alternatively, the barrier 4 is an integral piece. Alternatively, the cross section of the baffle part 4 is in an axisymmetric pattern, and the symmetry axis is parallel to the length direction of the heat exchange tube 31.

In some embodiments, the barrier 4 further includes a third barrier 43, one side of the third barrier 43 is connected to one side of the first barrier 41, and the other side of the third barrier 43 is connected to one side of the second barrier 42. Alternatively, the third barrier 43 is curved in an arc shape, or the third barrier 43 is curved in a shape having rounded corners on both sides.

Along the length direction of the heat exchange tube 31, the other side of the first baffle 41 is connected with the main board 14, and the other side of the second baffle 42 is connected with the main board 14.

The third barrier 43 is connected to the peripheral plate 13. Specifically, along the length direction of the first current collecting portion 1, both sides of the third barrier 43 are sealingly connected to the circumferential plate 13; or along the length direction of the heat exchange tube 31, the top of the third barrier 43 is connected to the inner wall surface of the circumferential plate 13. It is to be understood that the connection manner and connection position of the third barrier 43 and the circumferential plate 13 are not limited as long as the third barrier 43 and the circumferential plate 13 are in sealing connection.

Alternatively, the barrier 4 is an integral piece. The barrier 4 is in sealing connection with the peripheral plate 13, and the barrier 4 is in sealing connection with the main plate 14. It should be understood that the connection manner and connection position of the barrier portion 4 and the circumferential plate 13 and the main plate 14 are not limited, as long as the barrier portion 4 can divide the first manifold 10 into the first chamber 110 and the second chamber 120 which are not communicated with each other. For example, the barrier portion 4 is located entirely in the first manifold 10, one side of the barrier portion 4 is connected to the inner wall surface of the peripheral plate 13 in a sealing manner along the longitudinal direction of the heat exchange tube 31, the other side of the barrier portion 4 is connected to the inner wall surface of the main plate 14 in a sealing manner, and the different sides of the barrier portion 4 are connected to the peripheral plate 13 and/or the main plate 14 in a sealing manner along the width direction of the first manifold 1. Or, part of the baffle part 4 is positioned on the first manifold 10, one side of the baffle part 4 protrudes out of the circumferential plate 13 along the length direction of the heat exchange tube 31, the protruding part is not communicated with the outside, and the other side of the baffle part 4 is connected with the main plate 14 in a sealing way.

In an embodiment of the present application, as shown in fig. 2 to 7, the barrier portion 4 has a barrier cavity 40. The first baffle 41 and the second baffle 42 are disposed at intervals, the baffle cavity 40 is located between the first baffle 41 and the second baffle 42, and the first baffle 41 and the second baffle 42 surround the baffle cavity 40. The first curved portion 411 and the second curved portion 421 are disposed at a distance, and the barrier chamber 40 includes a space between the first curved portion 411 and the second curved portion 421. It will be appreciated that the barrier 4 defines the barrier chamber 40 with the circumferential plate 13 and/or the main plate 14. Some of the plurality of heat exchange tubes 31 communicate with the first chamber 110, some of the heat exchange tubes 31 communicate with the second chamber 120, and one or more of the heat exchange tubes 31 communicate with the barrier chamber 40. In one embodiment of the present application, the chamber of one heat exchange tube 31 communicates with the barrier chamber 40. That is, the one heat exchange tube 31 is inserted through the main plate 14 such that one end of the heat exchange tube 31 in the longitudinal direction is located in the barrier chamber 40. It will be appreciated that the plurality of heat exchange tubes 31 described above are in communication with the second manifold 20.

When the heat exchanger works, the cooling liquid enters the first chamber 110 and enters some heat exchange tubes 31 through the first chamber 110, and the heat exchanged liquid flows into the second manifold 20, and at the moment, the temperature of the liquid is increased due to the fact that part of heat is taken away; the liquid in the second manifold 20 flows into the second chamber 120 through the other heat exchange tubes 31, and at this time, the liquid takes more heat, has a higher temperature, and the temperature difference between the liquid at both sides of the barrier portion 4 is larger, so that the thermal stress is larger. Since the baffle cavity 40 is in communication with the heat exchange tube 31 or tubes 31, the heat exchange tube 31 is in communication with the second chamber 120, and when the heat exchanger is in operation, a portion of the liquid can flow from the second manifold 20 into the baffle cavity 40 through the chambers of the heat exchange tube or tubes 31. The liquid in the baffle cavity 40 is not circulated or not completely circulated when the heat exchanger works, so that the temperature of the liquid in the baffle cavity 40 is between the temperature of the liquid in the first chamber 110 and the temperature of the liquid in the second chamber 120, which reduces the temperature gradient of the liquid in the first chamber 110 and the second chamber 120, thereby reducing the damage of the heat stress generated by the temperature difference to the main board 14, protecting the main board, reducing the possibility of leakage, improving the heat exchange efficiency, and prolonging the service life of the heat exchanger.

In some embodiments, the first baffle 41, the second baffle 42, and the third baffle 43 surround the baffle cavity 40, and the baffle cavity 40 is located between the first baffle 41, the second baffle 42, and the third baffle 43; the first baffle 41, the second baffle 42, the third baffle 43 define the baffle cavity 40 along with the main board 14. The middle part of the first baffle 41 is arc-shaped and curved, and two ends of the first baffle are flat plates; the middle part of the second baffle plate 42 is arc-shaped and curved, and two ends are flat plates. Alternatively, the cross sections of the first baffle 41 and the second baffle 42 are in axisymmetric patterns. The third baffle 43 is a curved plate-like body with curved curvature or rounded ends, and optionally, the cross section of the third baffle 43 is in an axisymmetric pattern. The cross section of the baffle part 4 with the baffle cavity 40 is in an axisymmetric pattern. The barrier portion 4 includes an arc-shaped bent portion and has a barrier chamber 40. The temperature of the liquid in the baffle cavity 40 is between the temperature of the liquid in the first chamber 110 and the temperature of the liquid in the second chamber 120, so that the temperature gradient of the heat exchange tube 31 and the main board 14 near the baffle part 4 can be effectively reduced, and the thermal stress can be reduced. The arc-shaped bent portion is easily deformed to eliminate tensile stress of thermal stress conversion, and the like.

Fig. 9 to 10 show a baffle 4 in a further embodiment of the present application, the heat exchanger in this embodiment differing from the heat exchanger in an embodiment only in that a first baffle 41 is provided in connection with a second baffle 42. As shown in fig. 9 to 10. The first barrier 41 is sealingly connected to the second barrier 42 and, optionally, the first barrier 41 is brazed to the second barrier 42. At this time, the barrier chamber 40 is divided into two chambers, namely, a first barrier chamber 44 and a second barrier chamber 45, the first barrier chamber 44 is a self-sealing chamber, and the first barrier chamber 44 is not communicated with other chambers. The second barrier chamber 45 communicates with the chamber of the heat exchange tube 31 or tubes 31. The second barrier chamber 45 may also reduce the temperature gradient, thereby reducing thermal stress.

Fig. 11 and 12 show a heat exchanger according to another embodiment of the present application, which differs from the heat exchanger according to one embodiment only in that the barrier 4 is located between two adjacent heat exchange tubes 31, and the barrier chamber 40 is not in communication with the chamber of the heat exchange tubes 31. Specifically, the end surfaces of the first baffle 41 and the second baffle 42 are both in sealing connection with the inner wall surface of the main plate 14, and the end portions of the first baffle 41 and the second baffle 42 are located between the opposite outer wall surfaces of two adjacent heat exchange tubes 31. That is, the heat exchange tube 31 located at one side of the barrier portion 4 communicates with the first chamber 110, and the heat exchange tube 31 located at the other side of the barrier portion 4 communicates with the second chamber 120 along the longitudinal direction of the first manifold 10. The heat exchange tube 31 is not disposed between the first barrier 41 and the second barrier 42.

Fig. 13 to 15 show a heat exchanger in a fourth embodiment of the present application, which differs from the heat exchanger in an embodiment only in the structure of the barrier 4, and only the differences and the connection relationship or positional relationship of the differences with other structures are described below.

The barrier 4 includes a first barrier 41 and a second barrier 42. Along the length direction of the heat exchange tube 31, one side of the first baffle 41 is connected with the circumferential plate 13, and the other side of the first baffle 41 is connected with the main plate 14; along the length direction of the heat exchange tube 31, one side of the second baffle plate 42 is connected to the peripheral plate 13, and the other side of the second baffle plate 42 is connected to the main plate 14. The first barrier 41 is spaced apart from the second barrier 42. The first baffle 41, the second baffle 42, the peripheral plate 13 and the main plate 14 define a baffle cavity 40. The chambers of one or more heat exchange tubes 31 communicate with the barrier chamber 40. The other side of the first barrier 41 and the other side of the second barrier 42 are located between the one or more heat exchange tubes. One end of the one or more heat exchange tubes 31 is located in the barrier chamber 40. When the heat exchanger is in operation, the temperature of the liquid in the barrier chamber 40 is between the temperature of the liquid in the first chamber 110 and the temperature of the liquid in the second chamber 120 to reduce the temperature gradient of the liquid in the chambers on both sides of the barrier 4, thereby reducing the thermal stress to protect the motherboard 14.

Alternatively, for convenience of processing, the first baffle 41 and the second baffle 42 are both flat. Alternatively, the first barrier 41 is disposed in parallel with the second barrier 42. Alternatively, the cross-section of the wall surrounding the baffle cavity 40 may be square.

Alternatively, as shown in fig. 13 to 15, the barrier 4 further includes a third barrier 43, one side of the third barrier 43 being connected to the first barrier 41, and the other side of the third barrier 43 being connected to the second barrier 42. The first, second and third baffles 41, 42 and 43 surround the baffle cavity 40, and the first, second, third baffles 41, 42 and 43 and a portion of the main board 14 together define the baffle cavity 40. The baffle cavity 40 is located between the first baffle 41, the second baffle 42 and the third baffle 43.

It should be understood that the positional relationship between the barrier portion 4 and the first manifold portion 1 is not limited, as long as the barrier portion 4 can divide the first manifold 10 into two chambers. For example, the third baffle 43 is sealingly connected to the peripheral plate 13, and/or the first baffle 41 and/or the second baffle 42 is sealingly connected to the peripheral plate 13, so that the baffle effect of the baffle portion 4 can be achieved, and the first manifold 10 is further divided into two first chambers 110 and second chambers 120 which are not communicated with each other. And the baffle cavity can be communicated with the cavity of at least one heat exchange tube 31, so that liquid can enter the baffle cavity 40 when the heat exchanger works, and the temperature gradient of the liquid positioned on two sides of the baffle part 4 is reduced.

The foregoing description is not intended to limit the preferred embodiments of the present application, but is not intended to limit the scope of the present application, and any simple modification, equivalent variation and variation of the above embodiments according to the technical matter of the present application can be made by any person skilled in the art without departing from the scope of the technical solution of the present application.

Claims (13)

1. The heat exchanger is characterized by comprising a first current collecting part, a heat exchange part and a baffle part, wherein the first current collecting part is positioned at one side of the heat exchange part in the length direction, the first current collecting part is provided with a first current collecting cavity, and at least part of the baffle part is positioned in the first current collecting cavity;

the first collecting part comprises a first chamber part and a second chamber part, and at least part of the baffle part is positioned between the first chamber part and the second chamber part;

the first chamber part is provided with a first chamber, the second chamber part is provided with a second chamber, the first manifold comprises the first chamber and the second chamber, and at least part of the baffle part is positioned between the first chamber and the second chamber;

the baffle part comprises a baffle plate, and the baffle plate comprises at least one bending part which is curved in an arc shape.

2. The heat exchanger of claim 1, wherein the first manifold portion comprises a main plate and a peripheral plate, the main plate being connected to the peripheral plate, the first manifold being located between the main plate and the peripheral plate, the peripheral plate surrounding the first manifold;

the heat exchange part comprises a plurality of heat exchange pipes, one side of the first baffle is connected with a circumferential plate, the other side of the first baffle is connected with the main plate, one side of the second baffle is connected with the circumferential plate, and the other side of the second baffle is connected with the main plate;

the bending portion comprises a first bending portion and a second bending portion, the first baffle plate comprises the first bending portion, and the second baffle plate comprises the second bending portion.

3. The heat exchanger of claim 1, wherein the first manifold portion comprises a main plate and a peripheral plate, the main plate being connected to the peripheral plate, the first manifold being located between the main plate and the peripheral plate, the peripheral plate surrounding the first manifold;

the baffle plate comprises a first baffle plate, a second baffle plate and a third baffle plate, wherein the first baffle plate and the second baffle plate are arranged at intervals, one side of the third baffle plate is connected with one side of the first baffle plate, and the other side of the third baffle plate is connected with one side of the second baffle plate;

the heat exchange part comprises a plurality of heat exchange pipes, the other side of the first baffle plate is connected with the main board along the length direction of the heat exchange pipes, the other side of the second baffle plate is connected with the main board, and the third baffle plate is connected with the circumferential plate;

the bending part comprises a first bending part and a second bending part, the first baffle plate comprises the first bending part, and the second baffle plate comprises the second bending part;

the third baffle plate is a plate-shaped body with round corners at two ends or an arc-shaped bent plate-shaped body.

4. The heat exchanger of claim 2, wherein the radius of curvature of the first bend is equal to the radius of curvature of the second bend.

5. The heat exchanger of claim 2, wherein the first curved portion and the second curved portion are curved in opposite directions.

6. The heat exchanger according to claim 2, wherein the first baffle further comprises a first connection portion, one side of which is connected to the peripheral plate, and the other side of which is connected to the first curved portion, along the length direction of the heat exchange tube, the first connection portion being flat plate-like;

the second baffle plate further comprises a second connecting part, one side of the second connecting part is connected with the circumferential plate along the length direction of the heat exchange tube, the other side of the second connecting part is connected with the second bending part, and the second connecting part is in a flat plate shape.

7. The heat exchanger of claim 6, wherein the first baffle further comprises a third connecting portion, one side of the third connecting portion is connected to the first bending portion along the length direction of the heat exchange tube, at least a part of the other side of the third connecting portion is connected to the main plate, and the third connecting portion is in a flat plate shape;

the second baffle plate further comprises a fourth connecting part, one side of the fourth connecting part is connected with the second bending part along the length direction of the heat exchange tube, the other side of the second connecting part is connected with the main board, and the fourth connecting part is in a flat plate shape.

8. The heat exchanger of claim 7, wherein the first connection portion and the second connection portion are symmetrically disposed, the third connection portion and the fourth connection portion are symmetrically disposed, and the first curved portion and the second curved portion are symmetrically disposed.

9. The heat exchanger according to any one of claims 1 to 8, wherein the baffle is an integral piece.

10. The heat exchanger is characterized by comprising a first current collecting part, a heat exchange part and a baffle part, wherein the first current collecting part is positioned at one side of the heat exchange part in the length direction, the first current collecting part is provided with a first current collecting cavity, and at least part of the baffle part is positioned in the first current collecting cavity;

the first collecting part comprises a first chamber part and a second chamber part, and at least part of the baffle part is positioned between the first chamber part and the second chamber part; the first chamber part is provided with a first chamber, the second chamber part is provided with a second chamber, the first manifold comprises the first chamber and the second chamber, and the baffle part is positioned between the first chamber and the second chamber;

the baffle part is also provided with a baffle cavity, the heat exchange part comprises a plurality of heat exchange pipes, at least one chamber of the heat exchange pipes is communicated with the first chamber, at least one chamber of the heat exchange pipes is communicated with the second chamber, and at least one chamber of the heat exchange pipes is communicated with the baffle cavity.

11. The heat exchanger of claim 10, wherein the baffle comprises a baffle plate including at least one curved portion that is curved in an arc, the curved portion surrounding the baffle cavity.

12. The heat exchanger of claim 11, wherein the first manifold portion comprises a main plate and a peripheral plate, the main plate being connected to the peripheral plate, the first manifold being located between the main plate and the peripheral plate, the peripheral plate surrounding the first manifold;

the baffle comprises a first baffle plate and a second baffle plate, at least part of the first baffle plate is positioned between the first chamber and the baffle cavity, at least part of the second baffle plate is positioned between the second chamber and the baffle cavity, the baffle cavity is positioned between the first baffle plate and the second baffle plate, and the first baffle plate and the second baffle plate encircle the baffle cavity;

one side of the first baffle plate is connected with the circumferential plate along the length direction of the heat exchange tube, the other side of the first baffle plate is connected with the main plate, one side of the second baffle plate is connected with the circumferential plate, and the other side of the second baffle plate is connected with the main plate;

the bending parts comprise a first bending part and a second bending part, the first bending part and the second bending part are arranged at intervals, at least part of the baffle cavity is positioned between the first bending part and the second bending part, the first baffle plate comprises the first bending part, and the second baffle plate comprises the second bending part.

13. The heat exchanger of claim 10, wherein the first manifold portion comprises a main plate and a peripheral plate, the main plate being connected to the peripheral plate, the first manifold being located between the main plate and the peripheral plate, the peripheral plate surrounding the first manifold;

the baffle comprises a first baffle, a second baffle and a third baffle, wherein the first baffle and the second baffle are arranged at intervals, one side of the third baffle is connected with one side of the first baffle, the other side of the third baffle is connected with one side of the second baffle, the baffle cavity is positioned among the first baffle, the second baffle and the third baffle, and the first baffle, the second baffle and the third baffle encircle the baffle cavity;

along the length direction of the heat exchange tube, the other side of the first baffle plate is connected with the main board, the other side of the second baffle plate is connected with the main board, and the third baffle plate is connected with the circumferential plate;

the bending parts comprise a first bending part and a second bending part, the first bending part and the second bending part are arranged at intervals, at least part of the baffle cavity is positioned between the first bending part and the second bending part, the first baffle plate comprises the first bending part, and the second baffle plate comprises the second bending part;

the third baffle plate is a plate-shaped body with rounded corners at two ends or an arc-shaped bent plate-shaped body.