Heat exchanger and air conditioning system

Abstract

The embodiment of the invention discloses a heat exchanger and an air conditioning system. The heat exchanger comprises a heat exchange pipe. The heat exchange pipes comprise the first heat exchange pipe used for forming a first loop and the second heat exchange pipe used for forming a second loop. According to the heat exchanger and the air conditioning system, for example, the heat exchange capacity of the heat exchanger in the partial load state is improved.

Description

[0001] This application is a divisional application of a patent application (application date December 14, 2018, application number 201811538892.5, invention name “Heat exchanger and air conditioning system”). Technical Field

[0002] Embodiments of the present invention relate to a heat exchanger and an air conditioning system. Background Art

[0003] The heat exchangers of the two circuits of a conventional air conditioning system are separate. Summary of the invention

[0004] An object of embodiments of the present invention is to provide a heat exchanger and an air conditioning system, whereby, for example, the heat exchange capacity of the heat exchanger under partial load conditions is improved.

[0005] An embodiment of the present invention provides a heat exchanger, which includes: heat exchange tubes, the heat exchange tubes including a first heat exchange tube for forming a first loop and a second heat exchange tube for forming a second loop; first fins, wherein at least a portion of the first fins extends along a first direction and the first fins are arranged in a row and alternately arranged with the heat exchange tubes in a second direction perpendicular to the first direction.

[0006] According to an embodiment of the present invention, when viewed in the second direction, the heat exchanger is bent into an L-shape, a U-shape or a C-shape.

[0007] According to an embodiment of the present invention, the heat exchange tube includes a first end located on one side of the heat exchanger in a first direction, a second end located on the other side of the heat exchanger in the first direction, and a middle portion between the first end and the second end; the first end of the first heat exchange tube is bent toward one side of the heat exchanger in a third direction perpendicular to the first direction and the second direction, and the middle portion and the second end of the first heat exchange tube extend along the first direction; and the second end of the second heat exchange tube is bent toward the one side of the heat exchanger in the third direction perpendicular to the first direction and the second direction, and the middle portion and the first end of the second heat exchange tube extend along the first direction.

[0008] According to an embodiment of the present invention, the heat exchanger further includes: two first collecting pipes respectively connected to the first end and the second end of the first heat exchange tube and in fluid communication; and two second collecting pipes respectively connected to the first end and the second end of the second heat exchange tube and in fluid communication.

[0009] According to an embodiment of the present invention, the heat exchange tube includes a first end and a second end; the heat exchanger also includes: two first collecting tubes respectively connected to the first end and the second end of the first heat exchange tube and fluidly connected; and two second collecting tubes respectively connected to the first end and the second end of the second heat exchange tube and fluidly connected; one of the first collecting tube and the second collecting tube located on one side of the heat exchanger in the first direction is closer to the center of the heat exchanger in the first direction than the other in the first direction, so that at least a part of the one of the first collecting tube and the second collecting tube is located in the area between the other of the first collecting tube and the second collecting tube and the first fin in the first direction, thereby blocking at least a part of the airflow bypassing through the gap between the other of the first collecting tube and the second collecting tube and the first fin.

[0010] According to an embodiment of the present invention, in the second direction, the first heat exchange tube group and the second heat exchange tube group are alternately arranged, the first heat exchange tube group is composed of at least one of the first heat exchange tubes, and the second heat exchange tube group is composed of at least one of the second heat exchange tubes.

[0011] According to an embodiment of the present invention, at least one side of the first heat exchange tube, the second heat exchange tube, and the first fin in a third direction perpendicular to the first direction and the second direction is aligned in the second direction.

[0012] According to an embodiment of the present invention, the first heat exchange tube includes a first heat exchange tube portion and a second heat exchange tube portion arranged in a third direction perpendicular to the first direction and the second direction, and a connecting portion connecting the first heat exchange tube portion and the second heat exchange tube portion to each other and fluidly connecting the first heat exchange tube portion and the second heat exchange tube portion to each other, the first heat exchange tube portion and the second heat exchange tube portion are in contact with the same first fin on one side of the first heat exchange tube portion and the second heat exchange tube portion in the second direction and are in contact with the same first fin on the other side of the first heat exchange tube portion and the second heat exchange tube portion in the second direction.

[0013] According to an embodiment of the present invention, the heat exchanger further includes: second fins, at least a portion of which extends along a first direction and the second fins are arranged in a row in a second direction perpendicular to the first direction, wherein the first heat exchange tube includes a first heat exchange tube portion and a second heat exchange tube portion arranged in a third direction perpendicular to the first direction and the second direction, and a connecting portion connecting the first heat exchange tube portion and the second heat exchange tube portion to each other and making the first heat exchange tube portion and the second heat exchange tube portion fluidically connected to each other, in the second direction perpendicular to the first direction, a first group of heat exchange tubes consisting of the first fins and the first heat exchange tube portion and the second heat exchange tube of the first heat exchange tube are alternately arranged in a row; and in the second direction perpendicular to the first direction, a second group of heat exchange tubes consisting of the second fins and the second heat exchange tube portion of the first heat exchange tube are alternately arranged in a row.

[0014] According to an embodiment of the present invention, the first heat exchange tube portion, the second heat exchange tube portion and the connecting portion of the first heat exchange tube are formed by bending one heat exchange tube.

[0015] According to an embodiment of the present invention, the heat exchange tube also includes a third heat exchange tube for forming a third loop. In the second direction, the first heat exchange tube group, the second heat exchange tube group and the third heat exchange tube group are arranged alternately, the first heat exchange tube group is composed of at least one of the first heat exchange tubes, the second heat exchange tube group is composed of at least one of the second heat exchange tubes, and the third heat exchange tube group is composed of at least one of the third heat exchange tubes.

[0016] According to an embodiment of the present invention, the heat exchanger further includes: a second fin, at least a portion of the second fin extends along a first direction and the second fins are arranged in a row in a second direction perpendicular to the first direction; and a third fin, at least a portion of the third fin extends along the first direction and the third fins are arranged in a row in a second direction perpendicular to the first direction, wherein the heat exchange tube further includes a third heat exchange tube for forming a third loop; each of the first heat exchange tube and the second heat exchange tube includes a first heat exchange tube portion and a second heat exchange tube portion arranged in a third direction perpendicular to the first direction and the second direction, and a connecting portion connecting the first heat exchange tube portion and the second heat exchange tube portion to each other and making the first heat exchange tube portion and the second heat exchange tube portion fluidically connected to each other; the first heat exchange tube portion of the first heat exchange tube The first heat exchange tube parts of the fins and the second heat exchange tubes are arranged in a row with the third heat exchange tube, the second heat exchange tube parts of the first heat exchange tubes are arranged in a row, the second heat exchange tube parts of the second heat exchange tubes are arranged in a row, and the second heat exchange tube parts of the first heat exchange tubes and the second heat exchange tube parts of the second heat exchange tubes are respectively located on both sides of the third heat exchange tube in the third direction; in the second direction, the first fins and the second heat exchange tube parts of the first heat exchange tubes constitute a first group of heat exchange tubes alternately arranged in a row; in the second direction, the second fins and the first heat exchange tube parts of the first heat exchange tubes and the second heat exchange tube parts and the third heat exchange tubes constitute a second group of heat exchange tubes alternately arranged in a row; and in the second direction, the third fins and the second heat exchange tube parts of the second heat exchange tubes constitute a third group of heat exchange tubes alternately arranged in a row.

[0017] According to an embodiment of the present invention, the heat exchanger further includes: a second fin, at least a portion of which extends along a first direction and the second fins are arranged in a row in a second direction perpendicular to the first direction, wherein the heat exchange tube further includes a third heat exchange tube for forming a third loop; each of the first heat exchange tube and the second heat exchange tube includes a first heat exchange tube portion and a second heat exchange tube portion arranged in a third direction perpendicular to the first direction and the second direction, and a connecting portion connecting the first heat exchange tube portion and the second heat exchange tube portion to each other and making the first heat exchange tube portion and the second heat exchange tube portion fluidically connected to each other; The first heat exchange tube portion and the first heat exchange tube portion of the second heat exchange tube are arranged in a row with the third heat exchange tube, and the second heat exchange tube portion of the first heat exchange tube and the second heat exchange tube portion of the second heat exchange tube are arranged in a row and are located on one side of the third heat exchange tube in the third direction; in the second direction, the first fins and the second heat exchange tube portion of the first heat exchange tube and the second heat exchange tube portion of the second heat exchange tube form a first group of heat exchange tubes that are alternately arranged in a row; and in the second direction, the second fins and the first heat exchange tube portion of the first heat exchange tube and the first heat exchange tube portion of the second heat exchange tube and the second group of heat exchange tubes that are alternately arranged in a row.

[0018] According to an embodiment of the present invention, in a third direction perpendicular to the first direction and the second direction, the size of the first fin is the same as the larger size of the portion where the first heat exchange tube contacts the first fin and the portion where the second heat exchange tube contacts the first fin.

[0019] According to an embodiment of the present invention, the heat exchange tube includes a first end and a second end; the heat exchanger also includes: two first collecting pipes respectively connected to the first end and the second end of the first heat exchange tube and fluidly connected; two second collecting pipes respectively connected to the first end and the second end of the second heat exchange tube and fluidly connected; and two third collecting pipes respectively connected to the first end and the second end of the third heat exchange tube and fluidly connected.

[0020] An embodiment of the present invention provides an air conditioning system, which includes the above-mentioned heat exchanger.

[0021] According to the heat exchanger of the embodiment of the present invention, for example, the heat exchange capacity of the heat exchanger is improved under a partial load state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic perspective view of a heat exchanger according to a first embodiment of the present invention;

[0023] Figure 2 is a schematic top view of a heat exchanger according to a first embodiment of the present invention;

[0024] Figure 3 is a schematic top view of a heat exchanger according to a second embodiment of the present invention;

[0025] Figure 4 is a schematic partial enlarged view of a heat exchanger according to a third embodiment of the present invention;

[0026] Figure 5 is a schematic top view of a heat exchanger according to a fourth embodiment of the present invention, wherein arrows along the heat exchange tubes indicate the flow direction of the refrigerant;

[0027] Figure 6 is a schematic perspective view of a heat exchanger according to a fifth embodiment of the present invention;

[0028] Figure 7 is a schematic top view of a heat exchanger according to a fifth embodiment of the present invention;

[0029] Figure 8 is a schematic top view of a heat exchanger according to a sixth embodiment of the present invention, wherein arrows along the heat exchange tubes indicate the flow direction of the refrigerant;

[0030] Fig. 9 is a schematic perspective view of a heat exchanger according to a seventh embodiment of the present invention;

[0031] Fig.10 is a schematic top view of a heat exchanger according to a seventh embodiment of the present invention;

[0032] Fig.11 is a schematic perspective view of a heat exchanger according to an eighth embodiment of the present invention;

[0033] Fig.12 is a schematic top view of a heat exchanger according to an eighth embodiment of the present invention;

[0034] Fig.13 is a schematic perspective view of a heat exchanger according to a ninth embodiment of the present invention; and

[0035] Fig.14 is a schematic top view of a heat exchanger according to a ninth embodiment of the present invention. DETAILED DESCRIPTION

[0036] The air conditioning system according to an embodiment of the present invention includes a heat exchanger. Specifically, the air conditioning system according to an embodiment of the present invention includes a compressor, a heat exchanger as an evaporator, a heat exchanger as a condenser, an expansion valve, etc. The air conditioning system may include two or more cycles. Each cycle uses a certain circuit of the heat exchanger, and the multiple heat exchanger circuits are connected in parallel and independently of each other.

[0037] See also Figures 1 to 14, a heat exchanger 100 according to an embodiment of the present invention comprises: a heat exchange tube 1. The heat exchange tube 1 comprises a first heat exchange tube 1A for forming a first loop and a second heat exchange tube 1B for forming a second loop.

[0038] See also Figures 1 to 3 , Figures 9 to 14 The heat exchanger 100 according to the embodiment of the present invention further includes: first fins 2, at least a portion of which extends along a first direction D1 and in a second direction D2 perpendicular to the first direction D1, the first fins 2 are arranged in a row and alternately arranged with the heat exchange tubes 1. Thus, for example, if one circuit of the two-circuit air conditioning system is closed, at least a portion of the fins used for the circuit can be used for the other circuit, thereby improving the heat exchange efficiency of the heat exchanger.

[0039] See also Figures 1 to 3 , Figures 9 to 14 , in the second direction D2, the first heat exchange tube 1A and the second heat exchange tube 1B are arranged alternately. In some other embodiments of the present invention, in the second direction D2, the first heat exchange tube group and the second heat exchange tube group are arranged alternately, the first heat exchange tube group is composed of at least one (1, 2, 3 or more) first heat exchange tube 1A, and the second heat exchange tube group is composed of at least one (1, 2, 3 or more) second heat exchange tube 1B. That is, a plurality of first heat exchange tube groups and a plurality of second heat exchange tube groups are arranged alternately. The heat exchange tube 1 may be a flat tube. According to an example of the present invention, the first heat exchange tube 1A, the second heat exchange tube 1B and the first fin 2 are aligned in the second direction D2 on at least one side in a third direction D3 perpendicular to the first direction D1 and the second direction D2. In some examples of the present invention, the first heat exchange tube 1A includes a plurality of first heat exchange tube groups, the second heat exchange tube 1B includes a plurality of second heat exchange tube groups, and the first heat exchange tube group and the second heat exchange tube group are arranged alternately along the second direction D2. The number of first heat exchange tubes 1A in the plurality of first heat exchange tube groups may be the same or different. The number of second heat exchange tubes 1B in the plurality of second heat exchange tube groups may be the same or different.

[0040] See also Figures 1 to 3 , Figures 9 to 14 In some embodiments of the present invention, in a third direction D3 perpendicular to the first direction D1 and the second direction D2, the size of the first fin 2 is the same as the larger size of the portion where the first heat exchange tube 1A contacts the first fin 2 and the portion where the second heat exchange tube 1B contacts the first fin 2. Thus, the first heat exchange tube 1A and the second heat exchange tube 1B can both contact the first fin 2 over the entire size (e.g., the entire width) in the third direction D3.

[0041] According to an embodiment of the present invention, see Figure 3 , Figures 9 to 14When viewed in the second direction D2 (viewed in a top view), the heat exchanger 100 is bent into an L shape ( Fig. 9 , Fig.10 ), U-shaped ( Figure 3 , Fig.13 , Fig.14 ) or C-shaped ( Fig.11 , Fig.12 ). In addition, the heat exchanger 100 can also be bent into any other shape such as a V shape. The heat exchanger is bent to increase the heat exchange area. The heat exchange capacity of the bent heat exchanger is significantly better than that of a single-row heat exchanger. The number of loops of the heat exchanger can be greater than or equal to 2.

[0042] According to an embodiment of the present invention, see Figures 1 to 3 , the heat exchange tube 1 includes a first end 11 located on one side of the heat exchanger 100 in the first direction D1, a second end 12 located on the other side of the heat exchanger 100 in the first direction D1, and a middle portion 13 between the first end 11 and the second end 12; the first end 11 of the first heat exchange tube 1A is bent toward one side of the heat exchanger 100 in a third direction D3 perpendicular to the first direction D1 and the second direction D2, and the middle portion 13 and the second end 12 of the first heat exchange tube 1A extend along the first direction D1; and the second end 12 of the second heat exchange tube 1B is bent toward the one side of the heat exchanger 100 in the third direction D3 perpendicular to the first direction D1 and the second direction D2, and the middle portion 13 and the first end 11 of the second heat exchange tube 1B extend along the first direction D1. The heat exchange tube 1 is bent at only one end, and the other end is not bent. The shapes and sizes of all heat exchange tubes 1 can be consistent, reducing the variations of the heat exchange tubes 1 and significantly improving the processing efficiency of the heat exchanger.

[0043] According to an embodiment of the present invention, see Figures 1 to 4 , Figures 9 to 14 The heat exchanger 100 further includes: two first headers 3A respectively connected to the first end 11 and the second end 12 of the first heat exchange tube 1A and in fluid communication; and two second headers 3B respectively connected to the first end 11 and the second end 12 of the second heat exchange tube 1B and in fluid communication.

[0044] According to an embodiment of the present invention, see Figures 1 to 4 , Figures 9 to 14, the heat exchange tube 1 includes a first end 11 and a second end 12; the heat exchanger 100 also includes: two first headers 3A respectively connected to the first end 11 and the second end 12 of the first heat exchange tube 1A and in fluid communication; and two second headers 3B respectively connected to the first end 11 and the second end 12 of the second heat exchange tube 1B and in fluid communication; one of the first header 3A and the second header 3B located on one side of the heat exchanger 100 in the first direction D1 is closer to the center of the heat exchanger 100 in the first direction D1 than the other in the first direction D1, so that at least a portion of the one of the first header 3A and the second header 3B is located in the area between the other of the first header 3A and the second header 3B and the first fin 2 in the first direction D1, thereby blocking at least a portion of the airflow A bypassing through the gap between the other of the first header 3A and the second header 3B and the first fin 2. See Figure 4 , the height difference between the center line of the first header 3A and the center line of the second header 3B is H.

[0045] See also Figure 5 In some embodiments of the present invention, the first heat exchange tube 1A includes a first heat exchange tube portion 1A1 and a second heat exchange tube portion 1A2 arranged in a third direction D3 perpendicular to the first direction D1 and the second direction D2, and a connecting portion 1A3 connecting the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 to each other and fluidly connecting the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 to each other, and the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 are in contact with the same first fin 2 on one side of the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 in the second direction D2 and are in contact with the same first fin 2 on the other side of the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 in the second direction D2. For example, the first heat exchange tube portion 1A1, the second heat exchange tube portion 1A2 and the connecting portion 1A3 of the first heat exchange tube 1A are formed by bending a heat exchange tube 1.

[0046] According to an embodiment of the present invention, since the first heat exchange tube 1A and the second heat exchange tube 1B share at least a portion of the plurality of first fins 2, if one circuit of the two-circuit air-conditioning system is closed, at least a portion of the first fins used for the one circuit can be used for the other circuit, thereby improving the heat exchange efficiency of the heat exchanger.

[0047] See also Figure 5In some embodiments of the present invention, the heat exchanger 100 further includes: a first fin 2, at least a portion of which extends along a first direction D1 and the first fins 2 are arranged in a row in a second direction D2 perpendicular to the first direction D1; and a second fin, at least a portion of which extends along the first direction D1 and the second fins are arranged in a row in a second direction D2 perpendicular to the first direction D1. The first heat exchange tube 1A includes a first heat exchange tube portion 1A1 and a second heat exchange tube portion 1A2 arranged in a third direction D3 perpendicular to the first direction D1 and the second direction D2, and a connecting portion 1A3 connecting the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 to each other and making the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 fluidly connected to each other, a first group of heat exchange tubes 1 consisting of the first fin 2 and the first heat exchange tube portion 1A1 and the second heat exchange tube 1B of the first heat exchange tube 1A are alternately arranged in a row in a second direction D2 perpendicular to the first direction D1; and a second group of heat exchange tubes 1 consisting of the second fin and the second heat exchange tube portion 1A2 of the first heat exchange tube 1A are alternately arranged in a row in a second direction D2 perpendicular to the first direction D1. The height of the second fin in the second direction D2 is substantially equal to the distance between adjacent second heat exchange tube portions 1A2, and is greater than the height of the first fin 2 in the second direction D2. That is, in this embodiment, the length of the first heat exchange tube 1A is greater than the length of the second heat exchange tube 1B, thereby achieving different heat exchange capacities of different circulation loops. Not only different heat exchange capacities of different circulation loops are achieved, but also the installation space of the heat exchanger is fully utilized, and the heat exchange capacity is significantly better than that of a single-row heat exchanger. The first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 can be substantially parallel, and can be substantially parallel to the second heat exchange tube 1B.

[0048] See also Figure 8 And refer to Figure 6 and Figure 7In some embodiments of the present invention, the heat exchange tube 1 further includes a third heat exchange tube 1C for forming a third loop, the first heat exchange tube 1A includes a first heat exchange tube portion 1A1 and a second heat exchange tube portion 1A2 arranged in a third direction D3 perpendicular to the first direction D1 and the second direction D2, and a connecting portion 1A3 connecting the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 to each other and making the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 fluidically connected to each other; the second heat exchange tube 1B includes a first heat exchange tube portion 1B1 and a second heat exchange tube portion 1B2 arranged in a third direction D3 perpendicular to the first direction D1 and the second direction D2, and a connecting portion 1B1 connecting the first heat exchange tube portion 1B1 and the second heat exchange tube portion 1B2 to each other and making the first heat exchange tube portion 1B1 and the second heat exchange tube portion 1B2 fluidically connected to each other. 3. The first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 of the first heat exchange tube 1A are in contact with the same first fin 2 on one side of the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 of the first heat exchange tube 1A in the second direction D2 and are in contact with the same first fin 2 on the other side of the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 of the first heat exchange tube 1A in the second direction D2, and the first heat exchange tube portion 1B1 and the second heat exchange tube portion 1B2 of the second heat exchange tube 1B are in contact with the same first fin 2 on one side of the first heat exchange tube portion 1B1 and the second heat exchange tube portion 1B2 of the second heat exchange tube 1B in the second direction D2 and are in contact with the same first fin 2 on the other side of the first heat exchange tube portion 1B1 and the second heat exchange tube portion 1B2 of the second heat exchange tube 1B in the second direction D2. According to an example of the present invention, the first heat exchange tube portion 1A1 of the first heat exchange tube 1A and the first heat exchange tube portion 1B1 of the second heat exchange tube 1B are arranged in a row with the third heat exchange tube 1C, and the second heat exchange tube portion 1A2 of the first heat exchange tube 1A and the second heat exchange tube portion 1B2 of the second heat exchange tube 1B are respectively arranged in a row and are located on both sides of the third heat exchange tube 1C in the third direction D3.

[0049] See also Figure 8 And refer to Figure 6 and Figure 7In some embodiments of the present invention, the heat exchanger 100 further includes: a first fin 2, at least a portion of the first fin 2 extends along a first direction D1 and the first fins 2 are arranged in a row in a second direction D2 perpendicular to the first direction D1; a second fin, at least a portion of the second fin extends along the first direction D1 and the second fins are arranged in a row in a second direction D2 perpendicular to the first direction D1; and a third fin, at least a portion of the third fin extends along the first direction D1 and the third fins are arranged in a row in the second direction D2 perpendicular to the first direction D1. The heat exchange tube 1 also includes a third heat exchange tube 1C for forming a third loop; the first heat exchange tube 1A includes a first heat exchange tube portion 1A1 and a second heat exchange tube portion 1A2 arranged in a third direction D3 perpendicular to the first direction D1 and the second direction D2, and a connecting portion 1A3 connecting the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 to each other and making the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 fluidly connected to each other; the second heat exchange tube 1B includes a first heat exchange tube portion 1B1 and a second heat exchange tube portion 1B2 arranged in a third direction D3 perpendicular to the first direction D1 and the second direction D2, and a connecting portion 1B3 connecting the first heat exchange tube portion 1B1 and the second heat exchange tube portion 1B2 to each other and making the first heat exchange tube portion 1B1 and the second heat exchange tube portion 1B2 fluidly connected to each other; the first heat exchange tube portion 1A1 of the first heat exchange tube 1A and the first heat exchange tube portion 1B1 of the second heat exchange tube 1B B1 and the third heat exchange tube 1C are arranged in a row, the second heat exchange tube part 1A2 of the first heat exchange tube 1A is arranged in a row, the second heat exchange tube part 1B2 of the second heat exchange tube 1B is arranged in a row, and the second heat exchange tube part 1A2 of the first heat exchange tube 1A and the second heat exchange tube part 1B2 of the second heat exchange tube 1B are arranged in a row, and the second heat exchange tube part 1A2 of the first heat exchange tube 1A and the second heat exchange tube part 1B2 of the second heat exchange tube 1B are respectively located on both sides of the third heat exchange tube 1C in the third direction D3; in the second direction D2, the first fins 2 and the second heat exchange tube part 1A2 of the first heat exchange tube 1A constitute a first group of heat exchange tubes 1 alternately arranged in a row; in the second direction D2, the second fins and the first heat exchange tube part 1A1 of the first heat exchange tube 1A, the first heat exchange tube part 1B1 of the second heat exchange tube 1B and the third heat exchange tube 1C constitute a second group of heat exchange tubes 1 alternately arranged in a row; and in the second direction D2, the third fins and the third group of heat exchange tubes 1 constituted by the second heat exchange tube part 1B2 of the second heat exchange tube 1B are alternately arranged in a row.

[0050] See also Figure 8 And refer to Figure 6 and Figure 7In some embodiments of the present invention, the heat exchanger 100 further includes: a first fin 2, at least a portion of which extends along a first direction D1 and the first fins 2 are arranged in a row in a second direction D2 perpendicular to the first direction D1; and a second fin, at least a portion of which extends along the first direction D1 and the second fins are arranged in a row in a second direction D2 perpendicular to the first direction D1. The heat exchange tube 1 also includes a third heat exchange tube 1C for forming a third loop; the first heat exchange tube 1A includes a first heat exchange tube portion 1A1 and a second heat exchange tube portion 1A2 arranged in a third direction D3 perpendicular to the first direction D1 and the second direction D2, and a connecting portion 1A3 connecting the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 to each other and making the first heat exchange tube portion 1A1 and the second heat exchange tube portion 1A2 fluidly connected to each other; the second heat exchange tube 1B includes a first heat exchange tube portion 1B1 and a second heat exchange tube portion 1B2 arranged in a third direction D3 perpendicular to the first direction D1 and the second direction D2, and a connecting portion 1A3 connecting the first heat exchange tube portion 1B1 and the second heat exchange tube portion 1B2 to each other and making the first heat exchange tube portion 1B1 and the second heat exchange tube portion 1B2 fluidly connected to each other B3; the first heat exchange tube portion 1A1 of the first heat exchange tube 1A and the first heat exchange tube portion 1B1 of the second heat exchange tube 1B are arranged in a row with the third heat exchange tube 1C, and the second heat exchange tube portion 1A2 of the first heat exchange tube 1A and the second heat exchange tube portion 1B2 of the second heat exchange tube 1B are arranged in a row and are located on one side of the third heat exchange tube 1C in the third direction D3; in the second direction D2, the first fins 2 and the first group of heat exchange tubes 1 consisting of the second heat exchange tube portion 1A2 of the first heat exchange tube 1A and the second heat exchange tube portion 1B2 of the second heat exchange tube 1B are alternately arranged in a row; and in the second direction D2, the second fins and the second group of heat exchange tubes 1 consisting of the first heat exchange tube portion 1A1 of the first heat exchange tube 1A and the first heat exchange tube portion 1B1 of the second heat exchange tube 1B and the third heat exchange tube 1C are alternately arranged in a row.

[0051] See also Figures 6 to 8In some embodiments of the present invention, the heat exchange tube 1 includes a first end 11 and a second end 12; the heat exchanger 100 also includes: two first headers 3A respectively connected to and in fluid communication with the first end 11 and the second end 12 of the first heat exchange tube 1A; two second headers 3B respectively connected to and in fluid communication with the first end 11 and the second end 12 of the second heat exchange tube 1B; and two third headers 3C respectively connected to and in fluid communication with the first end 11 and the second end 12 of the third heat exchange tube 1C. According to an embodiment of the present invention, the header used for one circuit may not be used or closed, so that the heat exchanger 100 can be used for two circuits. In addition, the order of the three headers on one side of the heat exchanger 100 in the first direction in the third direction can be changed as needed.

[0052] See also Figures 6 to 7 In some embodiments of the present invention, in the second direction D2, the first heat exchange tube 1A, the second heat exchange tube 1B, and the third heat exchange tube 1C are arranged alternately. In some other embodiments of the present invention, in the second direction D2, the first heat exchange tube group, the second heat exchange tube group, and the third heat exchange tube group are arranged alternately, the first heat exchange tube group is composed of at least one (1, 2, 3 or more) of the first heat exchange tube 1A, the second heat exchange tube group is composed of at least one (1, 2, 3 or more) of the second heat exchange tube 1B, and the third heat exchange tube group is composed of at least one (1, 2, 3 or more) of the third heat exchange tube 1C. That is, a plurality of first heat exchange tube groups, a plurality of second heat exchange tube groups, and a plurality of third heat exchange tube groups are arranged alternately. The heat exchange tube 1 may be a flat tube. According to an example of the present invention, the first heat exchange tube 1A, the second heat exchange tube 1B, the third heat exchange tube 1C, and the first fin 2 are aligned in the second direction D2 on at least one side in the third direction D3 perpendicular to the first direction D1 and the second direction D2. According to an example of the present invention, the first heat exchange tube 1A, the second heat exchange tube 1B, the third heat exchange tube 1C and the first fin 2 are arranged alternately in a row in the second direction D2, or are arranged in a row in other ways. In some examples of the present invention, the first heat exchange tube 1A includes a plurality of first heat exchange tube groups, the second heat exchange tube 1B includes a plurality of second heat exchange tube groups, the third heat exchange tube 1C includes a plurality of third heat exchange tube groups, and the first heat exchange tube group, the second heat exchange tube group and the third heat exchange tube group are arranged alternately along the second direction D2. The number of first heat exchange tubes 1A of the plurality of first heat exchange tube groups may be the same or different. The number of second heat exchange tubes 1B of the plurality of second heat exchange tube groups may be the same or different. The number of third heat exchange tubes 1C of the plurality of third heat exchange tube groups may be the same or different.

[0053] See also Figures 6 to 7In some embodiments of the present invention, in a third direction D3 perpendicular to the first direction D1 and the second direction D2, the size of the first fin 2 is the same as the size of the largest portion of the portion where the first heat exchange tube 1A contacts the first fin 2, the portion where the second heat exchange tube 1B contacts the first fin 2, and the portion where the third heat exchange tube 1C contacts the first fin 2. Thus, the first heat exchange tube 1A, the second heat exchange tube 1B, and the third heat exchange tube 1C can all contact the first fin 2 over the entire size (e.g., the entire width) in the third direction D3.

[0054] See also Figure 8 And refer to Figure 6 and Figure 7 In some embodiments of the present invention, different heat exchange capacities of different circulation loops can be achieved by changing the length of the heat exchange tube 1, and the lengths of different heat exchange tubes 1 of different circulations can be achieved by bending the heat exchange tube 1. Not only different heat exchange capacities of different circulation loops are achieved, but also the installation space of the heat exchanger is fully utilized, and the heat exchange capacity is significantly better than that of a single-row heat exchanger. The circulation loop can be greater than or equal to 2, the length of the heat exchange tube 1 of at least one loop is greater than the length of the heat exchange tube 1 of other loops, and the heat exchange tube 1 of at least one loop is roughly parallel to other heat exchange tubes 1 after bending (heat exchange tube part).

[0055] See also Figure 8 And refer to Figure 6 and Figure 7 In some embodiments of the present invention, the first heat exchange tube portion, the second heat exchange tube portion and the connecting portion of the heat exchange tube 1 are formed by bending one heat exchange tube 1 .

[0056] According to an embodiment of the present invention, see Figures 6 to 8 Since the first heat exchange tube 1A, the second heat exchange tube 1B and the third heat exchange tube 1C share at least a portion of the multiple first fins 2, if one circuit of the three-circuit air-conditioning system is closed, at least a portion of the first fins used for the one circuit can be used for the other two circuits, thereby improving the heat exchange efficiency of the heat exchanger.

[0057] According to the embodiments of the present invention, the heat exchange capacity of the heat exchanger is improved under partial load conditions, the heat exchanger can maintain a sufficient refrigerant flow rate for oil return under partial load conditions, and the air conditioning system can continue to operate by another system when one cycle is damaged.

[0058] According to an embodiment of the present invention, the heat exchanger has more than two circuits and can be used in a multi-circuit system with more than two completely separated systems, which have separate compressors and independent refrigerant flows. The three-circuit heat exchanger can be used not only in a three-circuit system but also in a two-circuit system.

[0059] Furthermore, the above-described embodiments according to the present invention may be combined into new embodiments.

Claims

1. A heat exchanger, comprising: heat exchange tubes, the heat exchange tubes comprising a first heat exchange tube for forming a first loop and a second heat exchange tube for forming a second loop; The first fins include at least a portion of the first fins extending in a first direction and the first fins are arranged in a row and alternately arranged with the heat exchange tubes in a second direction perpendicular to the first direction.

2. The heat exchanger according to claim 1, wherein: When viewed in the second direction, the heat exchanger is bent into an L-shape, a U-shape or a C-shape.

3. The heat exchanger according to claim 1, wherein: The heat exchange tube includes a first end portion located on one side of the heat exchanger in the first direction, a second end portion located on the other side of the heat exchanger in the first direction, and a middle portion between the first end portion and the second end portion; The first end of the first heat exchange tube is bent toward one side of the heat exchanger in a third direction perpendicular to the first direction and the second direction, and the middle portion and the second end of the first heat exchange tube extend along the first direction; as well as The second end of the second heat exchange tube is bent toward the one side of the heat exchanger in a third direction perpendicular to the first direction and the second direction, and the middle portion and the first end of the second heat exchange tube extend along the first direction.

4. The heat exchanger according to claim 1 or 3, further comprising: two first headers respectively connected to the first end and the second end of the first heat exchange tube and in fluid communication; as well as Two second headers are respectively connected to the first end and the second end of the second heat exchange tube and are in fluid communication.

5. The heat exchanger according to claim 1, wherein: The heat exchange tube includes a first end and a second end; The heat exchanger also includes: two first headers respectively connected to the first end and the second end of the first heat exchange tube and in fluid communication; and two second headers respectively connected to the first end and the second end of the second heat exchange tube and in fluid communication; One of the first and second headers located on one side of the heat exchanger in the first direction is closer to the center of the heat exchanger in the first direction than the other one, so that at least a portion of the one of the first and second headers is located in the area between the other of the first and second headers and the first fin in the first direction, thereby blocking at least a portion of the airflow bypassing through the gap between the other of the first and second headers and the first fin.

6. The heat exchanger according to claim 1, wherein: In the second direction, the first heat exchange tube group and the second heat exchange tube group are alternately arranged, the first heat exchange tube group is composed of at least one of the first heat exchange tubes, and the second heat exchange tube group is composed of at least one of the second heat exchange tubes.

7. The heat exchanger according to claim 1, wherein: At least one side of the first heat exchange tube, the second heat exchange tube, and the first fin in a third direction perpendicular to the first direction and the second direction is aligned in the second direction.

8. The heat exchanger according to claim 1, wherein: The first heat exchange tube includes a first heat exchange tube portion and a second heat exchange tube portion arranged in a third direction perpendicular to the first direction and the second direction, and a connecting portion connecting the first heat exchange tube portion and the second heat exchange tube portion to each other and making the first heat exchange tube portion and the second heat exchange tube portion fluidically connected to each other, the first heat exchange tube portion and the second heat exchange tube portion contact the same first fin on one side of the first heat exchange tube portion and the second heat exchange tube portion in the second direction and contact the same first fin on the other side of the first heat exchange tube portion and the second heat exchange tube portion in the second direction.

9. The heat exchanger according to claim 1, further comprising: second fins, at least a portion of which extends along a first direction and the second fins are arranged in a row in a second direction perpendicular to the first direction, wherein the first heat exchange tube includes a first heat exchange tube portion and a second heat exchange tube portion arranged in a third direction perpendicular to the first direction and the second direction, and a connecting portion connecting the first heat exchange tube portion and the second heat exchange tube portion to each other and fluidly communicating the first heat exchange tube portion and the second heat exchange tube portion with each other, In a second direction perpendicular to the first direction, the first fins and a first group of heat exchange tubes consisting of a first heat exchange tube portion of the first heat exchange tube and a second heat exchange tube are alternately arranged in a row; as well as In a second direction perpendicular to the first direction, a second group of heat exchange tubes consisting of the second fins and the second heat exchange tube portion of the first heat exchange tube are alternately arranged in a row.

10. The heat exchanger according to claim 8 or 9, wherein: The first heat exchange tube portion, the second heat exchange tube portion and the connecting portion of the first heat exchange tube are formed by bending one heat exchange tube.

11. The heat exchanger according to claim 1, wherein: The heat exchange tube further comprises a third heat exchange tube for forming a third loop, In the second direction, the first heat exchange tube group, the second heat exchange tube group and the third heat exchange tube group are arranged alternately, the first heat exchange tube group is composed of at least one of the first heat exchange tubes, the second heat exchange tube group is composed of at least one of the second heat exchange tubes, and the third heat exchange tube group is composed of at least one of the third heat exchange tubes.

12. The heat exchanger according to claim 1, further comprising: second fins, at least a portion of which extends along a first direction and the second fins are arranged in a row in a second direction perpendicular to the first direction; as well as a third fin, at least a portion of which extends along a first direction and the third fins are arranged in a row in a second direction perpendicular to the first direction, The heat exchange tube further comprises a third heat exchange tube for forming a third loop; Each of the first heat exchange tube and the second heat exchange tube includes a first heat exchange tube portion and a second heat exchange tube portion arranged in a third direction perpendicular to the first direction and the second direction, and a connecting portion connecting the first heat exchange tube portion and the second heat exchange tube portion to each other and fluidly communicating the first heat exchange tube portion and the second heat exchange tube portion with each other; The first heat exchange tube portion of the first heat exchange tube and the first heat exchange tube portion of the second heat exchange tube are arranged in a row with the third heat exchange tube, the second heat exchange tube portion of the first heat exchange tube is arranged in a row, the second heat exchange tube portion of the second heat exchange tube is arranged in a row, and the second heat exchange tube portion of the first heat exchange tube and the second heat exchange tube portion of the second heat exchange tube are respectively located on both sides of the third heat exchange tube in the third direction; In a second direction, a first group of heat exchange tubes consisting of the first fins and the second heat exchange tube portion of the first heat exchange tube are alternately arranged in a row; In the second direction, the second fins and a second group of heat exchange tubes consisting of the first heat exchange tube portion of the first heat exchange tube, the first heat exchange tube portion of the second heat exchange tube, and the third heat exchange tube are alternately arranged in a row; as well as In the second direction, a third group of heat exchange tubes consisting of the third fins and the second heat exchange tube portion of the second heat exchange tube are alternately arranged in a row.

13. The heat exchanger according to claim 1, further comprising: second fins, at least a portion of which extends along a first direction and the second fins are arranged in a row in a second direction perpendicular to the first direction, The heat exchange tube further comprises a third heat exchange tube for forming a third loop; Each of the first heat exchange tube and the second heat exchange tube includes a first heat exchange tube portion and a second heat exchange tube portion arranged in a third direction perpendicular to the first direction and the second direction, and a connecting portion connecting the first heat exchange tube portion and the second heat exchange tube portion to each other and fluidly communicating the first heat exchange tube portion and the second heat exchange tube portion with each other; The first heat exchange tube portion of the first heat exchange tube and the first heat exchange tube portion of the second heat exchange tube are arranged in a row with the third heat exchange tube, and the second heat exchange tube portion of the first heat exchange tube and the second heat exchange tube portion of the second heat exchange tube are arranged in a row and are located on one side of the third heat exchange tube in the third direction; In a second direction, the first fins, the second heat exchange tube portion of the first heat exchange tube, and the second heat exchange tube portion of the second heat exchange tube constitute a first group of heat exchange tubes that are alternately arranged in a row; as well as In the second direction, the second fins and a second group of heat exchange tubes consisting of the first heat exchange tube portion of the first heat exchange tube, the first heat exchange tube portion of the second heat exchange tube, and the third heat exchange tube are alternately arranged in a row.

14. The heat exchanger according to claim 1, wherein: In a third direction perpendicular to the first and second directions, the first fin has the same size as a larger portion of a portion where the first heat exchange tube contacts the first fin and a portion where the second heat exchange tube contacts the first fin.

15. The heat exchanger according to any one of claims 11 to 13, wherein: The heat exchange tube includes a first end and a second end; The heat exchanger also includes: two first headers respectively connected to the first end and the second end of the first heat exchange tube and in fluid communication; two second headers respectively connected to the first end and the second end of the second heat exchange tube and in fluid communication; and Two third headers are respectively connected to the first end and the second end of the third heat exchange tube and are in fluid communication.

16. An air conditioning system, comprising: The heat exchanger according to claim 1.

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