Heat exchanger

Abstract

The heat exchanger comprises a plurality of fins and a plurality of heat exchange tubes, the fins are arranged in a stacked mode, each fin comprises a plurality of heat dissipation parts, a first groove is formed between every two adjacent heat dissipation parts, and the heat exchange tubes are arranged in at least part of the first grooves in the stacking direction of the fins; the heat dissipation part comprises at least one first convex rib and at least one second convex rib, at least part of the first convex rib extends in the first direction, at least part of the second convex rib extends in the second direction, the first direction is the length direction of the first groove, the second direction is the width direction of the first groove, and at least one side, in the length direction, of the first convex rib is connected with the second convex rib; the heat exchanger has a better heat exchange effect.

Description

Technical Field

[0001] The present application relates to the field of heat exchange technology, and in particular to a heat exchanger for a heat pump. Background Art

[0002] The heat exchange tubes and fins of a horizontally inserted fin heat exchanger typically utilize a clearance fit or interference fit. During or after assembly, the fins are subject to pressure from the tubes, causing them to bend or deform in certain areas. In related art, some insert-type fins have reinforcing ribs on the sides of the slots to increase their strength. However, the area near the bottom of the slots still lacks strength, causing the fins to bend or collapse near this location, adversely affecting the heat exchange performance of the heat exchanger. Utility Model Content

[0003] An embodiment of the present application provides a heat exchanger having a better heat exchange effect.

[0004] The heat exchanger provided in an embodiment of the present application includes a plurality of fins and a plurality of heat exchange tubes, wherein the plurality of fins are arranged in a stacked manner, and the fins include a plurality of heat dissipation portions, and a first groove is provided between two adjacent heat dissipation portions, and the plurality of heat exchange tubes are arranged in at least a portion of the first groove along the stacking direction of the fins; the heat dissipation portion includes at least one first rib and at least one second rib, wherein the first rib extends at least partially along the first direction, and the second rib extends at least partially along the second direction, the first direction is the length direction of the first groove, and the second direction is the width direction of the first groove, and the first rib is connected to the second rib along at least one side of the length direction.

[0005] The fin of the heat exchanger includes a first rib and a second rib, the first rib extends at least partially along the length direction of the first groove, and the second rib extends at least partially along the width direction of the first groove. The first rib is connected to the second rib on at least one side along the length direction, so that the first rib and the second rib form a continuous rib structure near the first groove, 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 THE DRAWINGS

[0006] Figure 1 A schematic structural diagram of a heat exchanger provided in this application in a specific embodiment;

[0007] Figure 2 for Figure 1 A schematic structural diagram of the fins of the heat exchanger in the first embodiment;

[0008] Figure 3 for Figure 1 A schematic structural diagram of the fins of the heat exchanger in the second specific embodiment;

[0009] Figure 4 for Figure 1 A schematic structural diagram of the fins of the heat exchanger in the third specific embodiment;

[0010] Figure 5 for Figure 1 A schematic structural diagram of the fins of the heat exchanger in a fourth specific embodiment;

[0011] Figure 6 for Figure 1 A schematic structural diagram of the fins of the heat exchanger in the fifth specific embodiment;

[0012] Figure 7 for Figure 1 A schematic structural diagram of the fins of the heat exchanger in a sixth specific embodiment;

[0013] Figure 8 for Figure 1 A schematic structural diagram of the fins of the heat exchanger in a seventh specific embodiment;

[0014] Figure 9 for Figure 1 A schematic structural diagram of the fins of the heat exchanger in an eighth specific embodiment;

[0015] Figure 10 for Figure 1 A schematic structural diagram of the fins of the heat exchanger in a ninth specific embodiment;

[0016] Figure 11 for Figure 1 A schematic structural diagram of the fins of the heat exchanger in a tenth specific embodiment;

[0017] Figure 12 for Figure 1 A schematic structural diagram of the fins of the heat exchanger in the eleventh specific embodiment;

[0018] Figure 13 for Figure 1 A schematic structural diagram of the fins of the heat exchanger in the twelfth specific embodiment;

[0019] Figure 14 for Figure 1 A schematic structural diagram of the fins of the heat exchanger in the thirteenth specific embodiment;

[0020] Figure 15 for Figure 1 Schematic diagram of the structure of the fins of the heat exchanger in the fourteenth specific embodiment.

[0021] Figure numerals: heat dissipation portion 1, first rib 11, second rib 12, transition fillet 13, first side 14, second side 15, third rib 16, protrusion 161, connecting portion 162, fourth rib 17, fifth rib 18, first groove 2, first sub-groove 21, second sub-groove 22, fin 3, heat exchange tube 4.

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0023] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0024] It should be clear that the embodiments described are only part of the technical solutions of this application, not all of the technical solutions. Based on the technical solutions in this application, all other technical solutions obtained by ordinary technicians in this field without making any creative work are within the scope of protection of this application.

[0025] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0026] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0027] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described based on the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should be understood that when it is mentioned that an element is connected to another element "on" or "under", it can not only be directly connected to the other element "on" or "under", but also be indirectly connected to the other element "on" or "under" through an intermediate element.

[0028] like Figure 1-15As shown, an embodiment of the present application provides a heat exchanger, which includes a plurality of fins 3 and a plurality of heat exchange tubes 4, wherein the plurality of fins 3 are arranged in a stacked manner, and the fins 3 include a plurality of heat dissipation parts 1, and a first groove 2 is provided between two adjacent heat dissipation parts 1, and the plurality of heat exchange tubes 4 are arranged in at least a portion of the first groove 2 along the stacking direction of the fins; the heat dissipation part 1 includes at least one first rib 11 and at least one second rib 12, wherein the first rib 11 extends at least partially along the first direction, and the second rib 12 extends at least partially along the 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, and the first rib 11 is connected to the second rib 12 on at least one side along the length direction.

[0029] In this embodiment, the multiple heat dissipation portions 1 are an integrated structure, that is, a whole formed by stamping a thin sheet. The description of them as multiple "heat dissipation portions" in this embodiment is for ease of description and reader understanding. Furthermore, the first rib 11 and the second rib 12 are raised along one side of the thickness direction of the heat dissipation portion 1. The protrusion directions of the first rib 11 and the second rib 12 can be the same, or they can be raised to both sides of the thickness direction of the heat dissipation portion 1, respectively. This is not specifically limited in this article. The first rib 11 is located near the first groove 2 of the heat dissipation portion 1, while the second rib 12 is located near the side of the heat dissipation portion 1. This allows the first rib 11 and the second rib 12 to form a larger semi-enclosed or enclosed area after connection, thereby having the effect of better strengthening the fin strength.

[0030] The shape of the first groove 2 is a long strip, and a notch with a width greater than the first groove 2 can be provided at the position of the opening side of the first groove 2, through which the heat exchange tube 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 tube. Therefore, this article does not specifically limit the specific shape and opening depth of the first groove 2. In some other embodiments, the length direction of the first groove 2 can also be inclined to the width direction of the heat dissipation part 1, and such a fin structure can be more conducive to the drainage of the heat exchanger. In addition, flanges can be provided on the side of the first groove 2, and windows and other structures can be provided at the position of the heat dissipation part 1. This article will not go into details about this.

[0031] In this embodiment, the fin 3 of the heat exchanger includes a first rib 11 and a second rib 12. The first rib 11 extends at least partially along the length direction of the first groove 2, and the second rib 12 extends at least partially along the width direction of the first groove 2. The first rib 11 is connected to the second rib 12 on at least one side along the length direction, so that the first rib 11 and the second rib 12 form a continuous rib structure near the first groove 2, thereby increasing the overall strength of the fin 3. Therefore, the fin 3 can better maintain its original shape, and the fin 3 can better perform heat exchange when the heat exchanger is working, thereby improving the heat exchange effect of the heat exchanger.

[0032] It is understandable that during the insertion of the heat exchange tube 4 into the first slot 2, the heat dissipation portion 1 on both sides of the first slot 2 and the heat dissipation portion 1 on the side of the first slot 2 facing away from the outlet will be subjected to extrusion pressure caused by contact with the flat tube. The resultant force of the extrusion pressure in these two directions is inclined to the first and second directions, but the specific direction of the inclination needs to be determined based on factors such as the magnitude of the extrusion pressure and the width of the fins. Therefore, the specific direction of this resultant force is uncertain. Therefore, even if ribs are provided in both the first and second directions of the heat dissipation portion 1, the direction of this resultant force may still be toward the discontinuous area between the two ribs. Such discontinuous areas are mostly located at the root of the fin 3, which will cause the fin 3 to deform at the root, adversely affecting the heat dissipation and drainage performance of the fin 3. In this embodiment, the method of connecting the first rib 11 and the second rib 12 can effectively increase the overall strength of the fin 3, thereby reducing the possibility of deformation of the fin 3.

[0033] In addition, the heat exchanger also includes components such as a collecting pipe and a distribution pipe. The refrigerant enters from the collecting pipe on one side, then exchanges heat through the heat exchange tube 4 and then converges into the collecting pipe on the other side. The specific structure of the heat exchanger is not described in detail in this article.

[0034] like Figure 1-15As shown, in one specific embodiment, there are at least two first ribs 11, each located adjacent to either side of the heat dissipation portion 1 along the second direction. A second rib 12 connects the at least two adjacent first ribs 11. Because the fins are relatively thin, the areas on either side of the heat dissipation portion 1 along the second direction (i.e., adjacent to the first slot 2) are susceptible to deformation when inserting a heat exchange tube. Therefore, providing at least one first rib 11 on each side of the heat dissipation portion 1 along the second direction can enhance the fin strength on either side of the first slot 2. It should be noted that the number of first ribs 11 can vary depending on the width of the heat dissipation portion 1. Generally, if the heat dissipation portion 1 also requires a window, two first ribs 11 are sufficient. However, the width of the first rib 11 can be increased as needed to ensure fin strength while minimizing heat dissipation area. Furthermore, the second rib 12 connects at least two adjacent first ribs 11, meaning that the second rib 12 can also connect three or more adjacent first ribs 11.

[0035] like Figure 2-3 As shown, in a specific embodiment, the second rib 12 connects at least two first ribs 11 of the same heat dissipation portion 1, or the second rib 12 connects two adjacent first ribs 11 of two adjacent heat dissipation portions 1; a transition fillet 13 is provided at the connection between the second rib 12 and the first rib 11.

[0036] As mentioned above, the fin is prone to deformation in the area where the first rib 11 and the second rib 12 are discontinuous. Such deformation can be reduced by connecting the first rib 11 and the second rib 12. Depending on the position of the second rib 12, the method of connecting the first rib 11 can also be slightly different, for example Figure 1 In the embodiment, the second rib 12 connects two adjacent first ribs 11 in the same heat dissipation portion 1. Figure 2 In the embodiment, the second rib 12 connects the two adjacent first ribs 11 in the two adjacent heat dissipation parts 1. The two connection modes can play roughly the same role, but generally speaking, Figure 2 The rib structure of the illustrated embodiment is enclosed around the circumference of the first slot 2 . This connection method can improve the strength of the fin.

[0037] like Figure 4-5 As shown, in a specific embodiment, the number of the second ribs 12 is at least two, and at least two second ribs 12 are respectively connected to the two sides of the first rib 11 of the same heat dissipation portion 1, or the second ribs 12 are staggered to connect any two adjacent first ribs 11. Figure 3 As shown, the second ribs 12 are connected to both sides of the first rib 11 of the same heat dissipation portion 1, and the first rib 11 and the second rib 12 enclose a closed reinforcement area; Figure 4As shown, one second rib 12 connects two adjacent first ribs 11 in two adjacent heat dissipation parts 1, and another second rib 12 connects the other two sides of the same heat dissipation part 1, so that the first ribs 11 and second ribs 12 in multiple heat dissipation parts 1 form a continuous broken line structure. Similar to the situation in the previous embodiment, Figure 3 and Figure 4 In the embodiment, Figure 4 It should be noted that in other embodiments below, the connection method of the first rib 11 and the second rib 12 is mostly the same as Figure 1-4 The connection method of the illustrated embodiments is the same, so the connection method of the first rib 11 and the second rib 12 will not be described in detail below.

[0038] like Figure 4 As shown, in a specific embodiment, the heat dissipation portion 1 has a first side 14 and a second side 15 in a first direction. The opening of the first groove 2 is located at the second side 15. The shortest distance between the first groove 2 and the first side 14 is defined as d1, and the shortest distance between the second rib 12 and the first side 14 is defined as d2. Then, d1 and d2 satisfy the following condition: d2 ≤ 1 / 2d1. As mentioned above, after the heat exchange tube is inserted, the root of the fin is an area that is more prone to deformation under stress. Therefore, placing the second rib 12 closer to the first side 14 can provide a better reinforcement effect, thereby reducing the deformation that may occur in the fin root area under stress.

[0039] like Figure 6-9 As shown, in a specific embodiment, the heat dissipation portion 1 further includes a third rib 16, which is located on a side of the heat dissipation portion 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.

[0040] During the process of inserting the heat exchange tube 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 tube. This downward pressure is transmitted from the bottom side of the first groove 2 to the first side edge 14 of the fin. Therefore, the heat dissipation portion 1 from the bottom side of the first groove 2 to the first side edge 14 is subjected to greater force, and the fin is more likely to deform in this area. The third rib 16 can strengthen the strength of the heat dissipation portion 1 near this area, thereby reducing the deformation of the fin caused by pressing down the heat exchange tube.

[0041] It should be noted that, in this 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 relatively convex or concave relative to the first rib 11. The convexity or concave mainly depends on the specific positions of the first rib 11 and the second rib 12. The shape of the third rib 16 is roughly a lug-like structure, for example, it can be convex or concave to form an arc or polygonal structure.

[0042] like Figure 6-9 As shown, 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 protrusion 161 and a connecting portion 162, the protrusion 161 protrudes toward either side of the length direction of the second rib 12, and the connecting portion 162 connects two adjacent protrusions 161.

[0043] like Figure 10-11 As shown, in a specific embodiment, the heat dissipation portion 1 further includes a fourth rib 17, the fourth rib 17 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.

[0044] In this embodiment, the addition of the fourth rib 17 further increases the overall strength of the fin. The fourth rib 17 performs substantially the same function as the third rib 16, so a detailed description thereof will not be given herein. Furthermore, the third and fourth ribs 16, 17 also protrude along one side of the heat dissipation portion 1 in the thickness direction. The protrusion direction of the third and fourth ribs 16, 17 can be on the same side as the first and second ribs 11, 12, or on different sides.

[0045] like Figure 12-14 As shown, in one specific embodiment, the heat dissipation portion 1 further includes a fifth rib 18. The length of the fifth rib 18 extends along the second direction. The fifth rib 18 is adjacent to the second rib 12 and is continuously or intermittently provided on multiple heat dissipation portions 1. As shown, the length of the fifth rib 18 is generally parallel to the length of the fin. The fifth rib 18 can work together with the second rib 12 to strengthen the fin in the second direction.

[0046] Specifically, the fifth rib 18 can be located in multiple locations, such as between the second rib 12 and the first side 14. Since there is generally no other fin structure between the second rib 12 and the first side 14, in this case, the fifth rib 18 is arranged continuously along the second direction. When the fifth rib 18 is located between the second rib 12 and the bottom end of the first slot 2, the heat dissipation portion 1 at this location may need to be equipped with other fin structures, such as fin windows. Therefore, the fifth rib 18 is arranged discontinuously along the second direction, i.e., the fifth rib 18 is continuous at the location directly opposite the first slot 2, but discontinuous between two first ribs 11 in the same heat dissipation portion 1.

[0047] like Figure 15 As shown, in one 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 a side of the first sub-groove 21 away from the second rib 12. The width of the second sub-groove 22 is greater than the width of the first sub-groove 21. The heat exchange tube 4 is at least partially located in the first sub-groove 21. Furthermore, along the second direction, the width of the first rib 11 corresponding to the second sub-groove 22 is defined as W1, and the width of the first rib 11 corresponding to the first sub-groove 21 is defined as W2. Thus, W1>W2.

[0048] When the width of the second sub-groove 22 is greater than that of the first sub-groove 21, it is easier to insert the heat exchange tube 4 into the first sub-groove 21. At the same time, the larger width of the second sub-groove 22 can also help improve the drainage performance of the fin. Correspondingly, if the second sub-groove 22 is larger, the strength of the nearby fins will be weaker, and the area near the second sub-groove 22 is closer to the opening of the fin and is more likely to deform when under pressure. Therefore, strengthening the fin strength in the area near the second sub-groove 22 is beneficial to reducing the deformation of the fin, thereby improving the overall strength of the fin 3.

[0049] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A heat exchanger, characterized in that: The invention comprises a plurality of fins (3) and a plurality of heat exchange tubes (4), wherein the plurality of fins (3) are stacked and arranged, and the fins (3) comprise a plurality of heat dissipation parts (1), wherein a first groove (2) is provided between two adjacent heat dissipation parts (1), and the plurality of heat exchange tubes (4) are arranged in at least a portion of the first groove (2) along the stacking direction of the fins; the heat dissipation part (1) comprises at least one first rib (11) and at least one second rib (12), wherein the first rib (11) extends at least partially along a first direction, and the second rib (12) extends at least partially along a second direction, wherein 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), and the first rib (11) is connected to the second rib (12) on at least one side along the length direction.

2. The heat exchanger according to claim 1, characterized in that The number of the first convex ribs (11) is at least two, at least two of the first convex ribs (11) are respectively close to both sides of the heat dissipation portion (1) along the second direction, and the second convex rib (12) connects at least two adjacent first convex ribs (11).

3. The heat exchanger according to claim 2, characterized in that The second convex rib (12) connects at least two of the first convex ribs (11) of the same heat dissipation portion (1), or the second convex rib (12) connects two adjacent first convex ribs (11) of two adjacent heat dissipation portions (1); a transition fillet (13) is provided at the connection between the second convex rib (12) and the first convex rib (11).

4. The heat exchanger according to claim 2, characterized in that The number of the second convex ribs (12) is at least two, and at least two of the second convex ribs (12) are respectively connected to two sides of the first convex rib (11) of the same heat dissipation portion (1), or the second convex ribs (12) are staggered to connect any two adjacent first convex 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 (14) and a second side (15) in the first direction, the opening of the first groove (2) is located at the second side (15), the shortest distance between the first groove (2) and the first side (14) is defined as d1, and the shortest distance between the second rib (12) and the first side (14) is defined as d2, then d1 and d2 satisfy: d2≤1 / 2d1.

6. The heat exchanger according to claim 5, characterized in that The heat dissipation portion (1) further comprises a third rib (16), the third rib (16) being located on a side of the heat dissipation portion (1) close to the second rib (12), and in the second direction, a distance between two adjacent third ribs (16) is greater than or less than a distance between two adjacent first ribs (11).

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

8. The heat exchanger according to claim 5, characterized in that The heat dissipation portion (1) further includes a fourth rib (17), the fourth rib (17) being located between two adjacent first ribs (11) of two adjacent heat dissipation portions (1), and the fourth rib (17) including a bump; the shortest distance between the fourth rib (17) and the first side edge (14) is defined as d3, then: d2<d3<d1.

9. The heat exchanger according to claim 5, characterized in that The heat dissipation portion (1) further comprises a fifth rib (18), the length direction of the fifth rib (18) extending along the second direction, the fifth rib (18) being close to the second rib (12) and being continuously or discontinuously arranged on a plurality of the heat dissipation portions (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) being located on a side of the first sub-groove (21) away from the second rib (12), the width of the second sub-groove (22) being greater than the width of the first sub-groove (21), and the heat exchange tube (4) being at least partially located in the first sub-groove (21).

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

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