Heat exchanger

Abstract

Provided is a heat exchanger, comprising a plurality of fins and a plurality of heat exchange tubes, wherein the plurality of fins are arranged in a stacked manner. Each fin comprises a plurality of heat dissipation portions, and a first groove is provided between two adjacent heat dissipation portions. The plurality of heat exchange tubes are disposed in at least part of first grooves in a stacking direction of the fins. Each heat dissipation portion comprises at least one first protruding rib and at least one second protruding rib. The first protruding rib at least partially extends in a first direction, and the second protruding rib at least partially extends in a second direction. the first direction is the direction of length of the first groove, and the second direction is the direction of width of the first groove. At least one side of the first protruding rib in the direction of length is connected to the second protruding rib.

Description

Heat exchanger

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 2024221862869, filed on September 6, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of heat exchange, in particular to a heat exchanger for heat pump. BACKGROUND

[0004] The heat exchange pipe of the transversely inserted fin heat exchanger is generally matched with the fin by gap matching or interference fitting. When the heat exchange pipe and the fin of the heat exchanger are assembled or after the assembly is completed, the fin will be subjected to the pressure generated by the heat exchange pipe, resulting in the bending or deformation of the fin in some areas. In the related art, some inserted fins have been provided with reinforcing ribs on the side of the insertion slot to increase the strength of the fin, but the strength of the fin in the area near the bottom of the insertion slot is still insufficient, resulting in bending or lodging of the fin near the position, which adversely affects the heat exchange effect of the heat exchanger. SUMMARY

[0005] The heat exchanger provided by the embodiments of the present application has better heat exchange effect.

[0006] The heat exchanger provided by the embodiments of the present application includes a plurality of fins and a plurality of heat exchange pipes. The plurality of fins are arranged in layers, and each fin includes a plurality of heat dissipation portions. A first slot is formed between adjacent two heat dissipation portions. The plurality of heat exchange pipes are arranged in at least part of the first slots along the layering direction of the fins. Each heat dissipation portion includes at least one first protruding rib and at least one second protruding rib. The first protruding rib extends at least partially along a first direction, and the second protruding rib extends at least partially along a second direction. The first direction is the length direction of the first slot, and the second direction is the width direction of the first slot. The first protruding rib is connected to the second protruding rib on at least one side along the length direction.

[0007] The fin of the heat exchanger includes the first protruding rib and the second protruding rib. The first protruding rib extends at least partially along the length direction of the first slot, and the second protruding rib extends at least partially along the width direction of the first slot. The first protruding rib is connected to the second protruding rib on at least one side along the length direction, so that the first protruding rib and the second protruding rib form a continuous protruding rib structure near the first slot, thereby increasing the overall strength of the fin. Therefore, the fin can better maintain its original shape, and the fin can better perform heat exchange when the heat exchanger is working, thereby improving the heat exchange effect of the heat exchanger. BRIEF DESCRIPTION OF DRAWINGS

[0008] Fig. 1 is a schematic view of a heat exchanger according to an embodiment of the present application;

[0009] Fig. 2 is a schematic view of a fin of the heat exchanger according to a first embodiment of the present application;

[0010] Fig. 3 is a schematic view of a fin of the heat exchanger according to a second embodiment of the present application;

[0011] Fig. 4 is a schematic view of a fin of the heat exchanger according to a third embodiment of the present application;

[0012] Fig. 5 is a schematic view of a fin of the heat exchanger according to a fourth embodiment of the present application;

[0013] Fig. 6 is a schematic view of a fin of the heat exchanger according to a fifth embodiment of the present application;

[0014] Fig. 7 is a schematic view of a fin of the heat exchanger according to a sixth embodiment of the present application;

[0015] Fig. 8 is a schematic view of a fin of the heat exchanger according to a seventh embodiment of the present application;

[0016] Fig. 9 is a schematic view of a fin of the heat exchanger according to an eighth embodiment of the present application;

[0017] Fig. 10 is a schematic view of a fin of the heat exchanger according to a ninth embodiment of the present application;

[0018] Fig. 11 is a schematic view of a fin of the heat exchanger according to a tenth embodiment of the present application;

[0019] Fig. 12 is a schematic view of a fin of the heat exchanger according to an eleventh embodiment of the present application;

[0020] Fig. 13 is a schematic view of a fin of the heat exchanger according to a twelfth embodiment of the present application;

[0021] Fig. 14 is a schematic view of a fin of the heat exchanger according to a thirteenth embodiment of the present application;

[0022] Fig. 15 is a schematic view of a fin of the heat exchanger according to a fourteenth embodiment of the present application.

[0023] Reference signs: heat dissipation portion 1, first protrusion 11, second protrusion 12, transition round corner 13, first side 14, second side 15, third protrusion 16, protruding portion 161, connecting portion 162, fourth protrusion 17, fifth protrusion 18, first groove 2, first sub-groove 21, second sub-groove 22, fin 3, heat exchange tube 4.

[0024] The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate embodiments consistent with the application and, together with the description, further serve to explain the principles of the application. DETAILED DESCRIPTION

[0025] For a better understanding of the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the drawings.

[0026] It should be clear that the described embodiments are only part of the technical solutions of the present application, rather than all the technical solutions. Based on the technical solutions in the present application, all other technical solutions obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0027] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0028] It should be understood that the term "and / or" used herein is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0029] It should be noted that the "up", "down", "left", "right" and other directional words described in the embodiments of the present application are described from the angle shown in the drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when referring to an element connected to another element "on" or "under", it can not only be directly connected to another element "on" or "under", but also indirectly connected to another element "on" or "under" through an intermediate element.

[0030] As shown in FIG. 1-15, the heat exchanger provided by the embodiments of the present application comprises a plurality of fins 3 and a plurality of heat exchange pipes 4, the plurality of fins 3 are arranged in a stack, the fin 3 comprises a plurality of heat dissipation portions 1, and a first groove 2 is arranged between two adjacent heat dissipation portions 1, and the plurality of heat exchange pipes 4 are arranged in at least part of the first grooves 2 along the stacking direction of the fins; the heat dissipation portion 1 comprises at least one first protruding rib 11 and at least one second protruding rib 12, the first protruding rib 11 extends at least partially along a first direction, the second protruding rib 12 extends at least partially along a second direction, the first direction is the length direction of the first groove 2, the second direction is the width direction of the first groove 2, and the first protruding rib 11 is connected to the second protruding rib 12 along at least one side in the length direction.

[0031] In the embodiments, the plurality of heat dissipation portions 1 are of an integral structure, that is, an integral structure formed by punching a sheet, and the reason why the embodiments are described as a plurality of "heat dissipation portions" is to facilitate description and understanding by the reader. In addition, the first protruding rib 11 and the second protruding rib 12 are protruded along one side in the thickness direction of the heat dissipation portion 1, and the protruding directions of the two can be the same or respectively protruded to both sides in the thickness direction of the heat dissipation portion 1, which is not specifically limited herein. The first protruding rib 11 is located at the position of the heat dissipation portion 1 close to the first groove 2, and the second protruding rib 12 is located at the position of the heat dissipation portion 1 close to the side, so that the first protruding rib 11 and the second protruding rib 12 form a larger semi-enclosed or enclosed area after being connected, thereby having a better effect of strengthening the strength of the fin.

[0032] The first groove 2 is in the shape of a long strip, and a notch with a width greater than that of the first groove 2 can be arranged at the position of the opening side of the first groove 2, so that the heat exchange pipe can be more conveniently inserted into the first groove 2. In addition, the opening depth, width and shape of the first groove 2 can be changed according to the shape of the heat exchange pipe, and therefore, the specific shape and opening depth of the first groove 2 are not specifically limited herein. In some other embodiments, the length direction of the first groove 2 can also be inclined to the width direction of the heat dissipation portion 1, and such a fin structure can be more conducive to the drainage of the heat exchanger. In addition, a flange can be arranged at the side of the first groove 2, and a window can be arranged at the position of the heat dissipation portion 1, which is not specifically described herein.

[0033] In the embodiment, the fin 3 of the heat exchanger comprises the first protruding rib 11 and the second protruding rib 12, the first protruding rib 11 extends at least partially along the length direction of the first groove 2, the second protruding rib 12 extends at least partially along the width direction of the first groove 2, and the first protruding rib 11 is connected with the second protruding rib 12 at least at one side in the length direction, so that the first protruding rib 11 and the second protruding rib 12 form a continuous protruding rib structure in the vicinity of the first groove 2, thereby increasing the overall strength of the fin 3, and thus the fin 3 can better maintain its original shape, and the fin 3 can better perform heat exchange during the operation of the heat exchanger, thereby improving the heat exchange effect of the heat exchanger.

[0034] It can be understood that, during the process of inserting the heat exchange tube 4 into the first groove 2, the heat dissipation part 1 on both sides of the first groove 2 and the heat dissipation part 1 on the side opposite to the outlet of the first groove 2 will all be subjected to extrusion force caused by the contact with the flat tube, and the resultant force of the extrusion forces in the two directions is inclined to the first direction and the second direction, but the specific direction of the inclination needs to be determined according to factors such as the size of the extrusion force and the width of the fin, and thus the specific direction of the resultant force is uncertain. Therefore, even if the protruding ribs are arranged in the first direction and the second direction of the heat dissipation part 1, the direction of the resultant force can still be towards the discontinuous area between the two protruding ribs, and such discontinuous areas are mostly located at the root position of the fin 3, which will cause the deformation of the fin 3 at the root position and adversely affect the heat dissipation and drainage performance of the fin 3. However, the continuous arrangement of the first protruding rib 11 and the second protruding rib 12 in the embodiment can effectively increase the overall strength of the fin 3, thereby reducing the possibility of deformation of the fin 3.

[0035] In addition, the heat exchanger also comprises components such as a collecting pipe and a distribution pipe, and the refrigerant enters from one side of the collecting pipe, then passes through the heat exchange tube 4 for heat exchange, and then converges into the other side of the collecting pipe. The specific structure of the heat exchanger will not be described in detail herein.

[0036] As shown in FIG. 1-15, in one embodiment, the number of the first ribs 11 is at least two, and the at least two first ribs 11 are respectively arranged near the two sides of the heat dissipation part 1 along the second direction, and the second rib 12 connects the adjacent at least two first ribs 11. Because the thickness of the fin is thin, when the heat exchange tube is inserted, the area of the heat dissipation part 1 near the two sides along the second direction (i.e. near the first groove 2) is also prone to deformation, therefore, arranging at least one first rib 11 on the two sides of the heat dissipation part 1 along the second direction can increase the strength of the fins on the two sides of the first groove 2. It should be noted that according to the width of the heat dissipation part 1, the number of the first ribs 11 can also be different, generally, when the heat dissipation part 1 also needs to be provided with a windowing structure, etc., the number of the first ribs 11 is two, but the width of the first rib 11 can be increased according to the needs, so that the strength of the fin can be ensured, and too much heat dissipation area is not occupied. In addition, the second rib 12 connects the adjacent at least two first ribs 11, which means that the second rib 12 can also connect three or more than three first ribs 11.

[0037] As shown in FIG. 2-3, in one embodiment, the second rib 12 connects the at least two first ribs 11 of the same heat dissipation part 1, or the second rib 12 connects the adjacent two first ribs 11 of the adjacent two heat dissipation parts 1; the connection between the second rib 12 and the first rib 11 is provided with a transition round corner 13.

[0038] As mentioned above, the fin is prone to deformation in the area where the first rib 11 and the second rib 12 are discontinuous, and the continuous first rib 11 and the second rib 12 can reduce such deformation. According to the different positions of the second rib 12, the continuous first rib 11 can also be slightly different, for example, in FIG. 1, the second rib 12 connects the adjacent two first ribs 11 in the same heat dissipation part 1, and in FIG. 2, the second rib 12 connects the adjacent two first ribs 11 in the adjacent two heat dissipation parts 1, and the two connection modes can achieve the same effect, but generally, the fin structure of the embodiment shown in FIG. 2 is enclosed on the side of the first groove 2, and such connection mode can make the fin have better strength.

[0039] As shown in FIGS. 4-5, in one embodiment, the number of the second ribs 12 is at least two, and the at least two second ribs 12 are connected to two sides of the first ribs 11 of the same heat dissipation part 1, or the second ribs 12 are connected to any two adjacent first ribs 11. As shown in FIG. 3, the second ribs 12 are connected to two sides of the first ribs 11 of the same heat dissipation part 1, and the first ribs 11 and the second ribs 12 form a closed reinforcing area; as shown in FIG. 4, one second rib 12 is connected to two adjacent first ribs 11 of two adjacent heat dissipation parts 1, and the other second rib 12 is connected to the other two sides of the same heat dissipation part 1, so that the first ribs 11 and the second ribs 12 in the plurality of heat dissipation parts 1 form a continuous polyline structure. Similar to the case in the previous embodiment, in the embodiments of FIGS. 3 and 4, the reinforcing effect of the embodiment shown in FIG. 4 is better. It should be noted that in the following embodiments, the connection mode of the first ribs 11 and the second ribs 12 is mostly the same as that of the embodiments shown in FIGS. 1-4, and therefore the connection mode of the first ribs 11 and the second ribs 12 will not be described again in the following.

[0040] As shown in FIG. 4, in one embodiment, the heat dissipation part 1 has a first side edge 14 and a second side edge 15 in the first direction, the opening of the first groove 2 is located at the second side edge 15, the shortest distance between the first groove 2 and the first side edge 14 is defined as d1, and the shortest distance between the second rib 12 and the first side edge 14 is defined as d2, then d2≤1 / 2d1. As mentioned above, after the heat exchange pipe is inserted, the fin root is the area that is more likely to deform under stress, and therefore, by arranging the second rib 12 closer to the first side edge 14, the second rib 12 can have a better reinforcing effect, thereby reducing the deformation of the fin root area under stress.

[0041] As shown in FIGS. 6-9, in one embodiment, the heat dissipation part 1 further comprises a third rib 16, and the third rib 16 is located at the side of the heat dissipation part 1 close to the second rib 12. In the second direction, the distance between two adjacent third ribs 16 is greater than or less than the distance between two adjacent first ribs 11.

[0042] In the process of inserting the heat exchange pipe into the first groove 2 of the fin, the fin is mainly subjected to the downward pressure brought by the downward pressure of the heat exchange pipe, and this downward pressure is conducted from the bottom side of the first groove 2 to the side of the first side edge 14 of the fin. Therefore, the heat dissipation part 1 of the first groove 2 from the bottom side to the first side edge 14 is subjected to a greater stress, and the fin is more likely to deform in this area. The third rib 16 can strengthen the strength of the heat dissipation part 1 near this area, thereby reducing the deformation of the fin caused by the downward heat exchange pipe.

[0043] It should be noted that in the present embodiment, the distance between two adjacent third ribs 16 is greater than or less than the distance between two adjacent first ribs 11, which means that the third rib 16 can be convex or concave relative to the first rib 11, and the convexity or concavity mainly depends on the specific positions of the first rib 11 and the second rib 12. The shape of the third rib 16 is generally a lobe-shaped structure, which can be convex or concave to form an arc or a polygonal structure.

[0044] As shown in FIGS. 6-9, in a specific embodiment, the third rib 16 connects the first rib 11 and the second rib 12; or the third rib 16 includes a convex portion 161 and a connecting portion 162, the convex portion 161 protrudes towards either side of the length direction of the second rib 12, and the connecting portion 162 connects two adjacent convex portions 161.

[0045] As shown in FIGS. 10-11, in a specific embodiment, the heat dissipation portion 1 further includes a fourth rib 17, which is located between two adjacent first ribs 11 of two adjacent heat dissipation portions 1, and the fourth rib 17 includes a protrusion; the shortest distance between the fourth rib 17 and the first side edge 14 is defined as d3, then: d2 < d3 < d1.

[0046] In the present embodiment, the overall strength of the fin can be further increased by the additional fourth rib 17, which can play a role similar to that of the third rib 16, and therefore will not be described again. In addition, the third rib 16 and the fourth rib 17 are also protruded along one side of the heat dissipation portion 1 in the thickness direction, and the protruding directions of the two can be the same side as the first rib 11 or the second rib 12, or different sides.

[0047] As shown in FIGS. 12-14, in a specific embodiment, the heat dissipation portion 1 further includes a fifth rib 18, the length direction of the fifth rib 18 extends along the second direction, and the fifth rib 18 is arranged continuously or discontinuously near the second rib 12 on the plurality of heat dissipation portions 1. As shown, the length direction of the fifth rib 18 is generally parallel to the length direction of the fin, and the fifth rib 18 can work together with the second rib 12 to strengthen the strength of the fin in the second direction.

[0048] In a specific embodiment, the fifth fin 18 can have multiple positions, for example, be arranged between the second fin 12 and the first side edge 14, because there is generally no other fin structure between the second fin 12 and the first side edge 14, and therefore the fifth fin 18 is arranged continuously in the second direction in this case. When the fifth fin 18 is arranged between the second fin 12 and the bottom end of the first groove 2, the heat dissipation part 1 at this position can need to be arranged with other fin structures, for example, fin openings, and therefore the fifth fin 18 is arranged discontinuously in the second direction, that is, the fifth fin 18 is continuous at the position opposite the first groove 2, and discontinuous between two first fins 11 of the same heat dissipation part 1.

[0049] As shown in FIG. 15, in a specific embodiment, the first groove 2 includes a first sub-groove 21 and a second sub-groove 22, the second sub-groove 22 is located on the side of the first sub-groove 21 away from the second fin 12, the width of the second sub-groove 22 is greater than the width of the first sub-groove 21, and the heat exchange pipe 4 is at least partially located in the first sub-groove 21. In addition, along the second direction, the width of the first fin 11 corresponding to the second sub-groove 22 is defined as W1, and the width of the first fin 11 corresponding to the first sub-groove 21 is defined as W2, then: W1>W2.

[0050] When the width of the second sub-groove 22 is greater than the width of the first sub-groove 21, it is more convenient to insert the heat exchange pipe 4 into the first sub-groove 21, and at the same time, the greater width of the second sub-groove 22 can also be beneficial to improve the drainage performance of the fins. Correspondingly, the second sub-groove 22 is larger, the strength of the fins near the second sub-groove 22 is weaker, and the area near the second sub-groove 22 is closer to the opening of the fins, and is more prone to deformation under pressure. Therefore, strengthening the strength of the fins near the second sub-groove 22 is beneficial to reduce the deformation of the fins, thereby improving the overall strength of the fins 3.

[0051] The above is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0052] All embodiments of the present disclosure can be executed independently or in combination with other embodiments, and are considered to be within the protection scope required by the present disclosure.

Claims

1. A heat exchanger, characterized by, The fin (3) includes a plurality of heat dissipation portions (1), and two adjacent heat dissipation portions (1) have a first groove (2) therebetween. A plurality of heat exchange pipes (4) are arranged in at least part of the first grooves (2) along the stacking direction of the fins. The heat dissipation portion (1) includes at least one first protruding rib (11) and at least one second protruding rib (12). The first protruding rib (11) extends at least partially along a first direction, and the second protruding rib (12) extends at least partially along a second direction. The first direction is the length direction of the first groove (2), and the second direction is the width direction of the first groove (2). The first protruding rib (11) is connected to the second protruding rib (12) on at least one side in the length direction.

2. The heat exchanger of claim 1, wherein The number of the first protruding ribs (11) is at least two, and at least two first protruding ribs (11) are arranged near both sides of the heat dissipation portion (1) in the second direction. The second protruding rib (12) connects at least two adjacent first protruding ribs (11).

3. The heat exchanger of claim 2, wherein The second protruding rib (12) connects at least two first protruding ribs (11) of the same heat dissipation portion (1), or the second protruding rib (12) connects two adjacent first protruding ribs (11) of two adjacent heat dissipation portions (1). A transition round corner (13) is arranged at the connection between the second protruding rib (12) and the first protruding rib (11).

4. The heat exchanger of claim 2, wherein The number of the second protruding ribs (12) is at least two, and at least two second protruding ribs (12) are arranged on both sides of the first protruding rib (11) of the same heat dissipation portion (1), or the second protruding ribs (12) are staggered to connect any two adjacent first protruding ribs (11).

5. The heat exchanger according to any one of claims 1 to 4, characterized in that The heat dissipation portion (1) has a first side edge (14) and a second side edge (15) in the first direction. The opening of the first groove (2) is located on the second side edge (15), and the shortest distance between the first groove (2) and the first side edge (14) is d1, and the shortest distance between the second protruding rib (12) and the first side edge (14) is d2. d1 and d2 satisfy: d2≤1 / 2d1.

6. The heat exchanger of claim 5, wherein The heat dissipation portion (1) further includes a third protruding rib (16) located on the side of the heat dissipation portion (1) close to the second protruding rib (12). In the second direction, the distance between two adjacent third protruding ribs (16) is greater than or less than the distance between two adjacent first protruding ribs (11).

7. The heat exchanger of claim 6, wherein The third protruding rib (16) connects the first protruding rib (11) and the second protruding rib (12), or the third protruding rib (16) includes a protruding portion (161) and a connecting portion (162). The protruding portion (161) protrudes towards any one side of the length direction of the second protruding rib (12), and the connecting portion (162) connects two adjacent protruding portions (161).

8. The heat exchanger of claim 5, wherein, The heat dissipation part (1) further comprises a fourth protruding rib (17) located between two adjacent first protruding ribs (11) of two adjacent heat dissipation parts (1), the fourth protruding rib (17) comprises a protruding block; the shortest distance between the fourth protruding rib (17) and the first side edge (14) is defined as d3, then: d2 < d3 < d1.

9. The heat exchanger of claim 5, wherein, The heat dissipation part (1) further comprises a fifth protruding rib (18) extending along the second direction, the fifth protruding rib (18) is arranged continuously or discontinuously near the second protruding rib (12) on a plurality of heat dissipation parts (1).

10. The heat exchanger according to any one of claims 1 to 4 or 6 to 9, characterized in that The first groove (2) comprises a first sub-groove (21) and a second sub-groove (22), the second sub-groove (22) is located on the side of the first sub-groove (21) away from the second protruding rib (12), the width of the second sub-groove (22) is greater than the width of the first sub-groove (21), and the heat exchange pipe (4) is at least partially located in the first sub-groove (21).

11. The heat exchanger of claim 10, wherein Along the second direction, the width of the first protruding rib (11) corresponding to the second sub-groove (22) is defined as W1, and the width of the first protruding rib (11) corresponding to the first sub-groove (21) is defined as W2, then: W1 > W2.

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