Heat exchanger

Abstract

The application discloses a heat exchanger, which comprises a plurality of heat exchange pipes, a first collecting pipe and an inlet part. The first collecting pipe comprises a first side wall and a first bottom wall. The first collecting pipe has a first collecting cavity between the first side wall and the first bottom wall. The first side wall is connected with the inlet part, and the first bottom wall is connected with the heat exchange pipes. The inlet part has an inlet cavity which is communicated with the first collecting cavity. The heat exchanger further comprises a flow guide part. At least part of the flow guide part is arranged along the extension direction of the inlet cavity, and at least part of the flow guide part is located in the first collecting cavity. At least part of the flow guide part is connected with the first side wall. The flow guide part can guide the cooling liquid flowing into the first collecting cavity, so that the cooling liquid is uniformly distributed in the first collecting cavity, and the cooling liquid is uniformly distributed in the heat exchange pipes, so that the heat exchange performance of the heat exchanger is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchange, in particular to a heat exchanger. BACKGROUND

[0002] The heat exchanger, also known as heat exchanger, is widely used in heat exchange system. The heat exchanger can be used for heat exchange between heat exchange medium and external air, and can also be used for heat exchange between two heat exchange media. The heat exchanger in the related art extends a section of pipeline on the water chamber part as an interface, and the cooling liquid is evenly distributed to both sides of the water chamber after entering the water chamber through the interface. Along the length direction of the water chamber, when the interface is not at the middle position of the water chamber, the cooling liquid in the water chamber on one side of the connecting pipe will be too little, and the cooling liquid in the water chamber on the other side of the connecting pipe will be too much, thereby causing uneven distribution of the cooling liquid in the heat dissipation pipe of the heat exchanger, and affecting the heat exchange performance of the heat exchanger. SUMMARY

[0003] To solve the problems in the related art, the technical scheme adopted by the present application is as follows:

[0004] A heat exchanger, comprising a plurality of heat exchange pipes, a first collecting pipe and an inlet part, the first collecting pipe comprising a first side wall and a first bottom wall, the first collecting pipe having a first collecting cavity, the first collecting cavity being located between the first side wall and the first bottom wall, the first side wall being connected with the inlet part, and the first bottom wall being connected with the heat exchange pipes;

[0005] The inlet part has an inlet cavity, and the inlet cavity is in communication with the first collecting cavity;

[0006] The heat exchanger further comprises a flow guide part, at least part of the flow guide part is arranged along the extension direction of the inlet cavity, and at least part of the flow guide part is located in the first collecting cavity; and at least part of the flow guide part is connected with the first side wall.

[0007] In the heat exchanger, the flow guide part is arranged along the extension direction of the inlet cavity, and at least part of the flow guide part is located in the first collecting cavity. The flow guide part can guide the cooling liquid flowing into the first collecting cavity, so that the uniformity of the distribution of the cooling liquid in the first collecting cavity is improved, and the cooling liquid is evenly distributed in the heat exchange pipes, so as to improve the heat exchange performance of the heat exchanger. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 is a schematic diagram of the heat exchanger in an embodiment of the present application;

[0009] Figure 2 is a schematic diagram of the heat exchanger in an embodiment of the present application;

[0010] Figure 3is a perspective view of a second component of a heat exchanger in an embodiment of the present application;

[0011] Figure 4 is Figure 3 is an enlarged view of the portion of the circle A shown;

[0012] Figure 5 is a longitudinal sectional perspective view of a second component of a heat exchanger in an embodiment of the present application;

[0013] Figure 6 is Figure 5 is an enlarged view of the portion of the circle B shown;

[0014] Figure 7 is a longitudinal sectional perspective view of a second component of a heat exchanger in an embodiment of the present application;

[0015] Figure 8 is Figure 7 is an enlarged view of the portion of the circle C shown;

[0016] Figure 9 is a bottom view of a second component of a heat exchanger in an embodiment of the present application;

[0017] Figure 10 is Figure 9 is an enlarged view of the portion of the circle D shown;

[0018] Figure 11 is a longitudinal sectional perspective view of a second component of a heat exchanger in an embodiment of the present application;

[0019] Figure 12 is Figure 11 is an enlarged view of the portion of the circle E shown;

[0020] Figure 13 is a longitudinal sectional perspective view of a second component of a heat exchanger in an embodiment of the present application;

[0021] Figure 14 is a longitudinal sectional perspective view of a second component of a heat exchanger in an embodiment of the present application. DETAILED DESCRIPTION

[0022] The illustrative examples described herein will be explained more fully with reference to the accompanying drawings, in which specific details of certain embodiments are shown. However, specific structural and functional details disclosed herein are not to be interpreted as limiting but merely as a representative basis for teaching one skilled in the art to variously employ the present application.

[0023] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should be understood that the terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one; "multiple" indicates two or more, unless otherwise specified. The terms "before," "below," and / or "above," etc., are used for ease of explanation only and are not limited to a location or spatial orientation. The terms "comprising," "including," etc., mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, but do not exclude other elements or objects.

[0025] The heat exchanger of an exemplary embodiment of this application will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can complement or combine with each other.

[0026] Figures 1 to 12 The following diagram illustrates heat exchangers and heat exchanger components in some embodiments of this application. For example... Figure 1 and Figure 2 As shown, the heat exchanger includes a first manifold, a second manifold 4, and a main body 1, with the main body 1 located between the first manifold and the second manifold 4. The main body 1 primarily functions as a heat exchanger. One side of the main body 1 is connected to the second manifold 4, and the other side of the main body 1 is connected to the first manifold. The first manifold and the second manifold 4 are located on different sides of the main body 1.

[0027] The main body 1 comprises a plurality of heat exchange tubes 11 which serve as heat exchange. The plurality of heat exchange tubes 11 are arranged along the length direction of the first manifold, and the plurality of heat exchange tubes 11 are arranged along the length direction of the second manifold 4. The two sides of the length direction of the heat exchange tubes 11 are connected with the first manifold and the second manifold 4 respectively. In some embodiments, the main body 1 further comprises a baffle (not shown) and a plurality of fins (not shown). Generally, the baffle does not form a cavity, so the strength of the baffle is greater than that of the heat exchange tube. The baffle is located on one side of the main body 1 and serves to protect the heat exchange tubes 11. Optionally, the heat exchanger comprises two baffles along the length direction of the first manifold or the second manifold 4, and the two baffles are located on different sides of the main body 1 and between the first manifold and the second manifold 4. In some embodiments, the two baffles and the second manifold 4 and the first manifold form a frame, and a plurality of heat exchange tubes 11 are arranged in the frame. A plurality of fins are located between each adjacent two heat exchange tubes 11 and serve to strengthen heat exchange. According to different performance requirements of the heat exchanger, the number of fins is different, and of course no fins can be provided in some heat exchangers.

[0028] The first manifold comprises a first manifold tube 31 and a second manifold tube 39. The first manifold tube 31 is an inlet tube, and the second manifold tube 39 is an outlet tube. Specifically, the first manifold tube 31 has a first manifold cavity 310, and the second manifold tube 39 has a second manifold cavity 390. The second manifold 4 has a third manifold cavity 410.

[0029] When the heat exchanger is working, the fluid is input from the external environment into the first manifold cavity 310, and is distributed from the first manifold cavity 310 to the cavities of some heat exchange tubes 11, flows to the third manifold cavity 410 after heat exchange by some heat exchange tubes 11, and flows to another heat exchange tube 11 from the third manifold cavity 410, and flows to the second manifold cavity 390 after heat exchange by another heat exchange tube 11, and flows out from the second manifold cavity 390. The flow path of the above-mentioned heat exchanger is only for describing an embodiment of the present application, and does not represent that the heat exchanger in the present application only has the above-mentioned flow path. When the heat exchanger flow process increases or decreases, the corresponding flow path will also increase or decrease.

[0030] As shown in Figure 1 The second manifold 4 comprises a third component 41 and a fourth component 42, and the third component 41 cooperates with the fourth component 42. The fourth component 42 is connected with the main body 1, i.e. connected with a plurality of heat exchange tubes 11. The fourth component 42 is connected with the third component 41. The third component 41 has the above-mentioned third manifold cavity 410, and the third manifold cavity 410 is located between the third component 41 and the fourth component 42.

[0031] In an embodiment of the present application, as shown in Figure 1 and Figure 2As shown, the first manifold 31 and the second manifold 39 are located at the same side of the main body 1, and the first manifold 31 and the second manifold 39 are connected. It can be understood that in some other embodiments, the first manifold 31 and the second manifold 39 can also be independently arranged, i.e., the first manifold 31 and the second manifold 39 are located at different sides of the main body 1, respectively.

[0032] In an embodiment of the present application, as shown in Figure 2 The first manifold includes a first part 2 and a second part 3, the first part 2 is connected with the main body 1, and the first part 2 is connected with the second part 3, specifically, the first part 2 and the second part 3 are fitted together. The first manifold cavity 310 is located between the first part 2 and the second part 3, and the second manifold cavity 390 is located between the first part 2 and the second part 3. As shown in Figure 2 The first part 2 includes a bottom wall 21 and a fitting part 22, the bottom wall 21 is located at the bottom of the first part 2, and the fitting part 22 is located at the circumference of the first part 2. The fitting part 22 is used for fitting with the second part 3, and the bottom wall 21 is connected with the plurality of heat exchange pipes 11. Specifically, the bottom wall 21 has a plurality of fitting holes, one side of each of the plurality of heat exchange pipes 11 in the length direction is fitted with the fitting hole, so that the above-mentioned one side of the heat exchange pipe 11 is at least partially located in the first manifold cavity 310 or the second manifold cavity 390, so that the fluid can flow into the chamber of the heat exchange pipe 11 through one side of the heat exchange pipe 11; the other side of the heat exchange pipe 11 in the length direction is connected with the second manifold 4, and the chamber of the heat exchange pipe 11 is in communication with the third manifold cavity 410. Optionally, the first part 2 is substantially a rectangular groove-shaped body. The fitting part 22 is the circumferential wall of the first part 2, specifically, part or all of the circumferential outer wall surface of the second part 3 is fitted with the inner wall surface of the fitting part 22 and / or the bottom wall surface 210 of the bottom wall 21.

[0033] The second part 3 has the first manifold cavity 310 and the second manifold cavity 390. The second part 3 includes a barrier part 43, the barrier part 43 extends along the length direction of the first manifold, and extends from one side of the first manifold to the other side, and the barrier part 43 is located between the first manifold cavity 310 and the second manifold cavity 390. One side of the barrier part 43 in the height direction is connected with the first side wall 311, and the other side of the barrier part 43 in the height direction is connected with the bottom wall 21 of the first part 2. The barrier part 43 has a sealing and blocking effect, and is used for preventing the fluid in the first manifold cavity 310 from flowing or leaking to the second manifold cavity 390.

[0034] As shown in Figure 2As shown, the bottom wall 21 includes a first bottom wall 211 and a second bottom wall 212, and the barrier 43 is located between the first bottom wall 211 and the second bottom wall 212 in the height direction. Along the length direction of the first bottom wall 211, a plurality of matching holes are arranged along the length direction of the first bottom wall 211, and a plurality of matching holes are arranged along the length direction of the second bottom wall 212. In an embodiment of the present application, the height direction of the barrier 43 coincides with or is parallel to the length direction of the heat exchange pipe 11.

[0035] The first header 31 includes the first bottom wall 211 and the first side wall 311, and the second header 39 includes the second bottom wall 212 and the second side wall 391. The first header cavity 310 is located between the first bottom wall 211 and the first side wall 311. The second header cavity 390 is located between the second bottom wall 212 and the second side wall 391.

[0036] Optionally, the first component 2 is a one-piece, and the second component 3 is a one-piece.

[0037] As shown in Figure 1 , Figure 2 , Figure 5 and Figure 7 , the first header further includes an inlet component 32 connected with the first side wall 311 of the first header 31. Specifically, the inlet component 32 is a tubular member protruding from the first side wall 311. Optionally, the inlet component 32 extends from the first side wall 311 in the length direction of the heat exchange pipe 11 away from the main body 1. Optionally, the inlet component 32 is a circular tube. The inlet component 32 has an inlet cavity 320 in communication with the first header cavity 310. As shown in Figure 5 and Figure 7 , the cross-sectional area of the inlet cavity 320 is circular. Understandably, in some embodiments, the shape and position of the inlet component 32 are not limited as long as the function of the inlet component 32 can be achieved. Similarly, in some embodiments, the shape of the inlet cavity 320 is not limited as long as the fluid can flow into the first header cavity 310 through the inlet cavity 320 to achieve the circulation of the fluid in the fluid circulation path of the heat exchanger.

[0038] The first collecting member further comprises an outlet member 40 connected with the second side wall 391 of the second collecting pipe 39. Specifically, the outlet member 40 is in the shape of a tube protruding from the second side wall 391. Optionally, the outlet member 40 extends from the second side wall 391 in a direction away from the main body 1 along the length direction of the heat exchange pipe 11. Optionally, the outlet member 40 is in the shape of a circular tube. The outlet member 40 has an outlet cavity in communication with the second collecting cavity 390. The shape and position of the outlet member 40 are arranged to facilitate connection with a pipeline member. It can be understood that the shape and position of the outlet member 40 can be changed arbitrarily to meet the requirements of cooperation with the pipeline member according to the connection requirements of the pipeline member. It can be understood that in other embodiments, the shape and position of the outlet member are not limited as long as the function of the outlet member 40 can be realized.

[0039] In an embodiment of the present application, the inlet member 32 and the outlet member 40 are respectively located at different sides of the first collecting member in the length direction, as shown in Figure 1 and Figure 2 The arrangement is based on the cooperation with the pipeline member. Since the inlet member 32 is not located at the middle of the first collecting pipe 31 in the length direction, when the fluid flows into the first collecting cavity 310 from the inlet cavity 320, the distribution of the fluid in the first collecting cavity 310 is uneven, resulting in too much fluid on one side, too little fluid on the other side, or even no fluid on one side. It can be understood that the fluid distribution in the first collecting cavity 310 close to the inlet cavity 320 is more, and the fluid distribution in the first collecting cavity 310 far from the inlet cavity 320 is less, which will make the fluid distribution in the heat exchange pipe 11 uneven, or even no fluid flows into the chamber of part of the heat exchange pipe 11, which leads to uneven heat exchange and affects the heat exchange effect of the heat exchanger.

[0040] Therefore, the heat exchanger further comprises a flow guide 33. When the inlet cavity 320 of the inlet member 32 is not located at the middle of the first collecting pipe 31 in the length direction, the flow guide 33 guides the fluid to be distributed evenly in the first collecting cavity 310, so that the fluid is distributed more evenly in the heat exchange pipes, thereby improving the heat exchange efficiency of the heat exchanger.

[0041] Figures 3 to 14 The flow guide 33 in an embodiment of the present application is shown. The flow guide 33 is connected with the first side wall 311. Part or all of the flow guide 33 is arranged along the extension direction of the inlet cavity 320, and part or all of the flow guide 33 is located in the first collecting cavity 310. Optionally, part or all of the flow guide 33 is opposite to the inlet cavity 320 along the extension direction of the inlet cavity 320.

[0042] In an embodiment of the present application, as shown in Figure 3As shown, the first flow collecting cavity 310 has a first cavity 3101 and a second cavity 3102, and the length of the first cavity 3101 is less than the length of the second cavity 3102 along the length direction of the first flow collecting pipe 31. The inlet cavity 320 is in communication with the first cavity 3101 and the second cavity 3102. The first cavity 3101 and the second cavity 3102 are respectively located at different sides of the inlet cavity 320 along the length direction of the first flow collecting cavity 310.

[0043] In an embodiment of the present application, as shown in Figure 6 and Figure 8 As shown, the flow guiding portion 33 includes a flow guiding surface 341, and at least part of the flow guiding surface 341 faces the inlet cavity 320 along the extension direction of the inlet cavity 320, so that the fluid flows along the inlet cavity 320 to the flow guiding surface 341, and the flow guiding surface 341 plays a role of blocking and / or guiding the fluid.

[0044] In an embodiment of the present application, the flow guiding surface 341 is arranged to be inclined relative to the length direction of the first flow collecting cavity 310. Optionally, the flow guiding surface 341 is a bent surface or an arc-shaped surface, and the flattened shape of the flow guiding surface 341 is a square plane. Along the length direction of the first flow collecting cavity 310, the flow guiding surface 341 is inclined to the direction of the inlet cavity 320 on one side close to or located in the first cavity 3101, and the flow guiding surface 341 is inclined to the direction of the first bottom wall 211 on the other side close to or located in the second cavity 3102. One side of the flow guiding surface 341 and the other side of the flow guiding surface 341 are distributed on different sides of the flow guiding surface 341. The blocking and / or guiding role of the flow guiding surface 341 makes more fluid flow to the second cavity 3102 and less fluid flow to the first cavity 3101, so that the fluid flows into the first flow collecting cavity 310 more uniformly. It can be understood that the flow guiding surface 341 can also be other irregularly shaped curved surfaces or planes, as long as the flow guiding surface 341 has a flow distribution role.

[0045] In an embodiment of the present application, as shown in Figures 3 to 12As shown, the flow guide part 33 further comprises a flow guide plate 34 which is arranged obliquely relative to the length direction of the first flow collecting cavity 310. The flow guide plate 34 plays a role of guiding and / or blocking, so that the fluid passing through the flow guide plate 34 can be distributed more evenly to the first flow collecting cavity 310, and thus more evenly to the plurality of heat exchange pipes 11. The flow guide plate 34 comprises the above-mentioned flow guide surface 341 and a back surface 342. The flow guide surface 341 and the back surface 342 are respectively located at different sides in the thickness direction of the flow guide plate 34. Optionally, the flow guide plate 34 is in the shape of an arc plate, the flow guide surface 341 is a concave curved surface, and the back surface 342 is a convex curved surface. The flow guide surface 341 faces the inlet cavity 320, and the back surface 342 faces away from the inlet cavity 320. The arc-shaped curved surface shape of the flow guide surface 341 and the back surface 342 can both play a good guiding role, so that the fluid can flow more smoothly along the flow guide surface 341 and / or the back surface 342. Understandably, the flow guide plate 34 can also be in the shape of a flat plate or a bent plate.

[0046] The flow guide plate 34 in an embodiment of the present application further comprises a first side 345, a second side 346, a third side 343 and a fourth side 344. The first side 345 and the second side 346 are respectively located at different sides of the flow guide plate 34, and are respectively located at different sides in the length direction of the first flow collecting cavity 310. The third side 343 and the fourth side 344 are respectively located at different sides of the flow guide plate 34, and the first side 345 and the second side 346 are respectively located between the third side 343 and the fourth side 344. The flow guide plate 34 is in the shape of a square plate, and the above-mentioned first side 345, second side 346, third side 343 and fourth side 344 are four sides of the square flow guide plate 34.

[0047] The third side 343 is connected to one side of the first side wall 311, and the fourth side 344 is connected to the other side of the first side wall 311. In the width direction of the first flow collecting cavity 310, the third side 343 and the fourth side 344 are respectively located at different sides of the first side wall 311. The width direction of the first flow collecting cavity 310 is perpendicular to the length direction of the first flow collecting cavity 310, and is also perpendicular to the length direction of the heat exchange pipe 11. In the extension direction of the inlet cavity 320 and in the length direction of the first flow collecting cavity 310, the first side 345 is inclined towards the direction close to the inlet cavity 320, and the second side 346 is inclined towards the direction away from the inlet cavity 320, so that the flow guide plate 34 is arranged obliquely in the length direction of the first flow collecting cavity 310, so that the fluid is distributed more evenly to the first cavity 3101 and the second cavity 3102.

[0048] In an embodiment of the present application, as shown in Figure 6 and Figure 8As shown, the flow guide 33 includes a first connecting portion 35 and a second connecting portion 36. Along the extending direction of the inlet cavity 320, the first connecting portion 35 extends along the inner wall of the inlet component 32 toward the first flow collector 310, and extends along the first side wall 311 toward the first flow collector 310, with the first connecting portion 35 connected to the first side wall 311. The inner wall surface of the inlet component 32 surrounds the inlet cavity 320.

[0049] Along the extension direction of the inlet cavity 320, the second connecting part 36 extends along the inner wall of the inlet component 32 toward the first collecting cavity 310, and extends along the first side wall 311 toward the first collecting cavity 310, and the second connecting part 36 is connected to the first side wall 311.

[0050] The first connecting portion 35 and the second connecting portion 36 are located on different sides of the guide plate 34. The first connecting portion 35 is connected to the third side 343, and the second connecting portion 36 is connected to the fourth side 344. The first connecting portion 35 and the second connecting portion 36 are at least partially opposite to each other, and both the first connecting portion 35 and the second connecting portion 36 are arranged circumferentially along the inner wall surface of the inlet component 32. Understandably, the first connecting portion 35 and the second connecting portion 36 may not be opposite to each other. The first connecting portion 35 includes a first curved surface 350, and the second connecting portion 36 includes a second curved surface 360. The first curved surface 350 and the second curved surface 360 ​​are at least partially opposite to each other. Optionally, the curvature of the first curved surface 350 is equal to the curvature of the second curved surface 360, that is, the radius of curvature of the first curved surface 350 is equal to the radius of curvature of the second curved surface 360.

[0051] like Figures 5 to 8 As shown, the first curved surface 350 extends circumferentially along the inner wall of the inlet component 32 to the second side 346, and the second curved surface 360 ​​extends circumferentially along the inner wall of the inlet component 32 to the first side 345. Therefore, the first connecting portion 35 can be connected to a portion of the second side 346, and the second connecting portion 36 can be connected to a portion of the first side 345. Understandably, depending on the position of the inlet component 32 in the first manifold 31, the first curved surface 350 can also extend circumferentially along the inner wall of the inlet component 32 to the first side 345, so that both circumferential sides of the first curved surface 350 are connected to the second side 346 and the first side 345 respectively; the second curved surface 360 ​​can extend circumferentially along the inner wall of the inlet component 32 to the second side 346, so that both circumferential sides of the second curved surface 360 ​​are connected to the first side 345 and the second side 346 respectively.

[0052] In one embodiment of this application, the inlet cavity 320 is a cylindrical cavity, and the inner wall surface of the inlet component 32 surrounds the inlet cavity 320. Optionally, both the first curved surface 350 and the second curved surface 360 ​​extend along the inner wall surface of the inlet cavity 320 to the first manifold 310, and the radii of curvature of the first curved surface 350 and the second curved surface 360 ​​are equal to the radius of the inner wall surface of the inlet cavity 320.

[0053] In an embodiment of the present application, the inlet component 32 is located on the upper side of the first side wall 311, which extends away from the main body 1 along the length direction of the heat exchange tube 11. The inlet component 32 comprises a first end 321 and a second end 322, which are located on different sides of the extension direction of the inlet cavity 320 respectively. The first end 321 is away from the first collecting cavity 310, and the second end 322 is close to the first collecting cavity 310. The first connecting part 35 is connected to the second end 322, and the second connecting part 36 is connected to the second end 322. The first connecting part 35 extends from the second end 322 to the first collecting cavity 310 along the extension direction of the inlet cavity 320. The second connecting part 36 extends from the second end 322 to the first collecting cavity 310 along the extension direction of the inlet cavity 320.

[0054] In an embodiment, as shown in Figure 9 and Figure 10 , the first end 321 has a first port 3210, and part or all of the flow guide plates 34 are opposite to the first port 3210. Optionally, the first port 3210 is a circular port. Optionally, a projection plane perpendicular to the axis of the inlet cavity 320 is provided, the first port 3210 is located on the projection plane, and the orthographic projection of the flow guide plates 34 on the projection plane is located in the middle of the first port 3210 along the extension direction of the inlet cavity 320. Optionally, the width distance of the flow guide plates 34 along the length direction of the first collecting tube 31 is less than the diameter of the first port 3210. The length distance of the flow guide plates 34 along the width direction of the first collecting tube 31 is greater than the diameter of the first port 3210.

[0055] In an embodiment of the present application, as shown in Figures 11 to 14 , the first collecting tube 31 has a first liquid inlet 37 and a second liquid inlet 38. Part of the flow guide parts 33 divides the communication between the inlet cavity 320 and the first collecting cavity 310 into two inlets, which are the first liquid inlet 37 and the second liquid inlet 38 respectively along the extension direction of the inlet cavity 320.

[0056] Further, the first liquid inlet 37 is located between the first connecting part 35, the second connecting part 36, the first side wall 311 and the first side 345, the second liquid inlet 38 is located between the first connecting part 35, the second connecting part 36, the first side wall 311 and the second side 346, and at least part of the flow guide plates 34 are located between the first liquid inlet 37 and the second liquid inlet 38. The first liquid inlet 37 communicates the inlet cavity 320 and the first cavity 3101, and the second liquid inlet 38 communicates the inlet cavity 320 and the second cavity 3102.

[0057] As shown in Figures 11 to 14 , the opening size of the first liquid inlet 37 is smaller than that of the second liquid inlet 38.

[0058] The first liquid inlet 37 and the second liquid inlet 38 are located at different sides of the flow guide plate 34 along the length direction of the first collecting cavity 310, and part or all of the flow guide plate 34 is located between the first liquid inlet 37 and the second liquid inlet 38. The first liquid inlet 37 is communicated with the first cavity 3101, and the second liquid inlet 38 is communicated with the second cavity 3102.

[0059] When the heat exchanger works, the fluid flows into the inlet cavity 320, and the fluid flows to the first cavity 3101 and the second cavity 3102 through the first liquid inlet 37 and the second liquid inlet 38 respectively under the blocking and / or guiding effect of the flow guide plate 34. Although the length of the first cavity 3101 is smaller than that of the second cavity 3102, the opening size of the first liquid inlet 37 is smaller than that of the second liquid inlet 38. In addition, the blocking and guiding effect of the flow guide plate 34 makes the fluid flow to the first collecting cavity 310 more uniformly, so that the fluid can be distributed more uniformly in the plurality of heat exchange pipes 11, thereby improving the heat exchange effect of the heat exchange pipes 11 and the heat exchanger.

[0060] Optionally, the first liquid inlet 37 and the second liquid inlet 38 are both inverted U-shaped openings, as shown in Figure 13 and Figure 14 .

[0061] In an embodiment of the present application, the first bottom wall 211 includes a bottom wall surface 210, and the bottom wall surface 210 is located in the first collecting cavity 310, and the flow guide part 33 has a spacing with the bottom wall surface 210. Specifically, the back surface 342 has a spacing with the bottom wall surface 210. It can be understood that when part of the back surface 342 is connected with the bottom wall surface 210, the uniform distribution effect of the fluid in the first collecting cavity 310 can still be achieved.

[0062] In an embodiment of the present application, the flow guide part 33 and the second part 3 are an integral piece.

[0063] The above description is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the preferred embodiment of the present application has been disclosed as above, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the technical solution of the present application, and the equivalent embodiments with equivalent changes and modifications are equivalent to the above embodiments. Any simple modification, equivalent change and modification of the above embodiments based on the technical essence of the present application are still within the scope of the technical solution of the present application.

Claims

1. A heat exchanger, characterized by, The heat exchanger comprises a plurality of heat exchange pipes (11), a first collecting pipe (31) and an inlet part (32), the first collecting pipe (31) comprises a first side wall (311) and a first bottom wall (211), the first collecting pipe (31) has a first collecting cavity (310) between the first side wall (311) and the first bottom wall (211), the first side wall (311) is connected with the inlet part (32), and the first bottom wall (211) is connected with the heat exchange pipe (11); the inlet part (32) has an inlet cavity (320) in communication with the first collecting cavity (310); The heat exchanger further comprises a flow guide part (33), at least part of the flow guide part (33) is arranged along the extension direction of the inlet cavity (320), and at least part of the flow guide part (33) is located in the first collecting cavity (310); at least part of the flow guide part (33) is connected with the first side wall (311); along the extension direction of the inlet cavity (320), at least part of the flow guide part (33) faces the inlet cavity (320); the flow guide part (33) comprises a flow guide surface (341), and along the extension direction of the inlet cavity (320), at least part of the flow guide surface (341) faces the inlet cavity (320); the flow guide surface (341) is arranged obliquely relative to the length direction of the first collecting cavity (310); The flow guide part (33) comprises a flow guide plate (34), the flow guide plate (34) is in the shape of an arc plate, the flow guide plate (34) comprises the flow guide surface (341) and a back surface (342), the flow guide surface (341) and the back surface (342) are located on different sides of the thickness direction of the flow guide plate (34) respectively, the flow guide surface (341) is a concave curved surface, the back surface (342) is a convex curved surface, the flow guide surface (341) faces the inlet cavity (320), and the back surface (342) faces away from the inlet cavity (320).

2. The heat exchanger of claim 1, wherein The flow guide plate (34) comprises a first side (345), a second side (346), a third side (343) and a fourth side (344), the first side (345) and the second side (346) are located on different sides of the flow guide plate (34) respectively, and the first side (345) and the second side (346) are located on different sides of the length direction of the first collecting cavity (310) respectively; the third side (343) and the fourth side (344) are located on different sides of the flow guide plate (34) respectively, and the third side (343) and the fourth side (344) are located between the first side (345) and the second side (346) respectively; The third side (343) is connected with one side of the first side wall (311), the fourth side (344) is connected with the other side of the first side wall (311), and along the length direction of the first collecting cavity (310), the first side (345) is inclined towards the direction close to the inlet cavity (320), and the second side (346) is inclined towards the direction away from the inlet cavity (320).

3. The heat exchanger of claim 2, wherein The inlet component (32) is tubular, and along the length direction of the heat exchange pipe (11), the inlet component (32) protrudes from the first side wall (311) to the direction away from the first collecting cavity (310); The flow guide part (33) comprises a first connecting part (35) and a second connecting part (36); Along the extension direction of the inlet cavity (320), the first connecting part (35) extends from the inner wall surface of the inlet component (32) to the direction of the first collecting cavity (310), and the first connecting part (35) is connected with the inner wall surface of the first side wall (311); Along the extension direction of the inlet cavity (320), the second connecting part (36) extends from the inner wall surface of the inlet component (32) to the direction of the first collecting cavity (310), and the second connecting part (36) is connected with the inner wall surface of the first side wall (311); The first connecting part (35) and the second connecting part (36) are respectively located on different sides of the flow guide plate (34), and the first connecting part (35) and the second connecting part (36) are respectively located on different sides of the first side wall (311), the first connecting part (35) is connected with the third side (343), and the second connecting part (36) is connected with the fourth side (344).

4. The heat exchanger of claim 3, wherein The first collecting cavity (310) has a first cavity (3101) and a second cavity (3102), and along the length direction of the first collecting pipe (31), the length of the first cavity (3101) is less than the length of the second cavity (3102); The first collecting pipe (31) has a first liquid inlet (37) and a second liquid inlet (38), the first liquid inlet (37) is located between the first connecting part (35), the second connecting part (36), the first side wall (311) and the first side (345), the second liquid inlet (38) is located between the first connecting part (35), the second connecting part (36), the first side wall (311) and the second side (346), and the flow guide plate (34) is located between the first liquid inlet (37) and the second liquid inlet (38), the first liquid inlet (37) communicates the inlet cavity (320) and the first cavity (3101), and the second liquid inlet (38) communicates the inlet cavity (320) and the second cavity (3102).

5. The heat exchanger of claim 1, wherein The inlet component (32) is tubular, and the inlet component (32) comprises a first end (321) and a second end (322), the first end (321) and the second end (322) are respectively located on different sides of the extension direction of the inlet cavity (320), the first end (321) is away from the first collecting cavity (310), the second end (322) is close to the first collecting cavity (310), the first end (321) has a first port (3210), and the first port (3210) is a circular port; Along the length direction of the first collecting pipe (31), the width distance of the flow guide plate (34) is less than the diameter of the first port (3210).

6. The heat exchanger according to any one of claims 1 to 5, characterized in that The first bottom wall (211) covers a bottom wall surface (210), the bottom wall surface (210) is located in the first flow collecting cavity (310), and a spacing is formed between the flow guiding part (33) and the bottom wall surface (210).

7. The heat exchanger according to any one of claims 1 to 5, characterized in that The heat exchanger comprises a first flow collecting member (31, 39) and a main body part (1), the first flow collecting member (31, 39) comprises a second flow collecting pipe (39) and an outlet part (40), the outlet part (40) is connected with the second flow collecting pipe (39), the second flow collecting pipe (39) is arranged side by side with the first flow collecting pipe (31) and is located on the same side of the main body part (1), and the outlet part (40) and the inlet part (32) are respectively located on different sides of the first flow collecting member (31, 39) in the length direction. The first side wall (311) and the flow guiding part (33) are an integral piece.

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