Heat exchanger, air conditioning system and heat exchange system

Abstract

The invention discloses a heat exchanger, an air conditioning system with the heat exchanger and a heat exchange system with the heat exchanger. The heat exchanger comprises a first heat exchanger core and a second heat exchanger core which are arranged side by side. The first heat exchanger core body comprises a first main section, a first connecting section connected with the first main section and a first collecting pipe. The first main section comprises a plurality of first heat exchange tubes arranged in the second direction perpendicular to the first direction. The second heat exchanger core body comprises a second main section, a second connecting section connected with the second main section and a second collecting pipe. The second main section comprises a plurality of second heat exchange tubes arranged in the second direction. The first main section comprises a first wind resistance area and a second wind resistance area which are arranged in the third direction perpendicular to the first direction and the second direction, the second wind resistance area is adjacent to the first collecting pipe, the wind resistance of the second wind resistance area is smaller than that of the first wind resistance area, and therefore the performance of the heat exchanger, the air conditioning system and the heat exchange system can be improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to a heat exchanger, an air-conditioning system having the heat exchanger, and a heat exchange system having the heat exchanger. Background Art

[0002] A heat exchanger including two rows of heat exchanger cores can be formed by bending a flat heat exchanger. The flat heat exchanger includes a header, heat exchange tubes, and fins, and both ends of the heat exchange tubes are connected to the header. Summary of the Invention

[0003] The object of embodiments of the present invention is to provide a heat exchanger, an air-conditioning system having the heat exchanger, and a heat exchange system having the heat exchanger, whereby, for example, the performance of the heat exchanger, the air-conditioning system, and the heat exchange system can be improved.

[0004] Embodiments of the present invention provide a heat exchanger, including: a first heat exchanger core and a second heat exchanger core arranged side by side in a first direction, the first heat exchanger core including: a first main section, the first main section of the first heat exchanger core including a plurality of first heat exchange tubes arranged in a second direction perpendicular to the first direction; a first connection section connected to the first main section; and a first header connected to and in fluid communication with the plurality of first heat exchange tubes on a side of the first main section of the first heat exchanger core opposite to the first connection section, the second heat exchanger core including: a second main section, the second main section of the second heat exchanger core including a plurality of second heat exchange tubes arranged in the second direction; a second connection section connected to the second main section; and a second header connected to and in fluid communication with the plurality of second heat exchange tubes on a side of the second main section of the second heat exchanger core opposite to the second connection section, wherein the plurality of first heat exchange tubes of the first main section of the first heat exchanger core and the plurality of second heat exchange tubes of the second main section of the second heat exchanger core are connected to each other and in fluid communication through the first connection section of the first heat exchanger core and the second connection section of the second heat exchanger core, and wherein the first main section of the first heat exchanger core includes a first wind resistance area and a second wind resistance area arranged in a third direction perpendicular to the first direction and the second direction or in a first heat exchanger core extension direction perpendicular to the second direction and parallel to a first plane where the first main section of the first heat exchanger core is located, the second wind resistance area is adjacent to the first header, and the wind resistance of the second wind resistance area is less than the wind resistance of the first wind resistance area.

[0005] According to an embodiment of the present invention, the first air resistance region has a dimension in the extending direction of the first heat exchanger core body, the first main section of the first heat exchanger core body has a dimension in the extending direction of the first heat exchanger core body, and the ratio of the dimension of the first air resistance region to the dimension of the first main section is greater than or equal to 20% and less than or equal to 90%; or the ratio of the dimension of the first air resistance region in the third direction to the dimension of the first main section of the first heat exchanger core body in the third direction is greater than or equal to 20% and less than or equal to 90%; or the ratio of the part of the length of the first heat exchange tubes occupied by the first air resistance region to the length of the first heat exchange tubes is greater than or equal to 20% and less than or equal to 90%.

[0006] According to an embodiment of the present invention, the first heat exchanger core body has a first orthographic projection on the second plane where the second main section of the second heat exchanger core body is located, the second heat exchanger core body has a second orthographic projection on the second plane where the second main section of the second heat exchanger core body is located, and the ratio of the overlapping area of the first orthographic projection of the first heat exchanger core body and the second orthographic projection of the second heat exchanger core body to the area of the second orthographic projection of the second heat exchanger core body is greater than or equal to 50% and less than or equal to 100%.

[0007] According to an embodiment of the present invention, the included angle between the first main section of the first heat exchanger core body and the second main section of the second heat exchanger core body is greater than or equal to 0 degree and less than or equal to 45 degrees.

[0008] According to an embodiment of the present invention, the first heat exchanger core body has a dimension in the extending direction of the first heat exchanger core body, the second heat exchanger core body has a dimension in the second heat exchanger core body extending direction that is perpendicular to the second direction and parallel to the second plane where the second main section of the second heat exchanger core body is located, and the ratio between the dimension of the first heat exchanger core body and the dimension of the second heat exchanger core body is greater than or equal to 30% and less than or equal to 100%; or the ratio of the dimension of the first heat exchanger core body in the third direction to the dimension of the second heat exchanger core body in the third direction is greater than or equal to 30% and less than or equal to 100%.

[0009] According to an embodiment of the present invention, the first heat exchanger core body has a dimension in the extending direction of the first heat exchanger core body, the second heat exchanger core body has a dimension in the second heat exchanger core body extending direction that is perpendicular to the second direction and parallel to the second plane where the second main section of the second heat exchanger core body is located, and the ratio between the dimension of the first heat exchanger core body and the dimension of the second heat exchanger core body is greater than or equal to 60% and less than or equal to 100%; or the ratio of the dimension of the first heat exchanger core body in the third direction to the dimension of the second heat exchanger core body in the third direction is greater than or equal to 60% and less than or equal to 100%.

[0010] According to an embodiment of the present invention, the first main section of the first heat exchanger core further includes: a first fin disposed in the first air resistance region and connected to the first heat exchange tube, and there is no fin in the second air resistance region of the first main section of the first heat exchanger core; the second main section of the second heat exchanger core further includes: a second fin connected to the second heat exchange tube. The second air resistance region of the first main section of the first heat exchanger core has a dimension in the extending direction of the first heat exchanger core, and the second main section of the second heat exchanger core has a dimension in the extending direction of the second heat exchanger core that is perpendicular to the second direction and parallel to the second plane where the second main section of the second heat exchanger core is located, and the ratio of the dimension of the second air resistance region to the dimension of the second main section of the second heat exchanger core is greater than or equal to 10% and less than or equal to 70%; or the first main section of the first heat exchanger core further includes: a first fin disposed in the first air resistance region and connected to the first heat exchange tube, and there is no fin in the second air resistance region of the first main section of the first heat exchanger core; the second main section of the second heat exchanger core further includes: a second fin connected to the second heat exchange tube. The second air resistance region of the first main section of the first heat exchanger core has a dimension in the third direction, and the second main section of the second heat exchanger core has a dimension in the third direction, and the ratio of the dimension of the second air resistance region to the dimension of the second main section of the second heat exchanger core is greater than or equal to 10% and less than or equal to 70%.

[0011] According to an embodiment of the present invention, the first main section of the first heat exchanger core further includes: a first fin disposed in the first air resistance region and connected to the first heat exchange tube, and there is no fin in the second air resistance region of the first main section of the first heat exchanger core; the second main section of the second heat exchanger core further includes: a wavy second fin connected to the second heat exchange tube and arranged alternately with the second heat exchange tube. The second air resistance region of the first main section of the first heat exchanger core has a dimension in the extending direction of the first heat exchanger core, and the second fin has a dimension in the extending direction of the second heat exchanger core that is perpendicular to the second direction and parallel to the second plane where the second main section of the second heat exchanger core is located, and the ratio of the dimension of the second air resistance region to the dimension of the second fin is greater than or equal to 10% and less than or equal to 70%; or the first main section of the first heat exchanger core further includes: a first fin disposed in the first air resistance region and connected to the first heat exchange tube, and there is no fin in the second air resistance region of the first main section of the first heat exchanger core; the second main section of the second heat exchanger core further includes: a wavy second fin connected to the second heat exchange tube and arranged alternately with the second heat exchange tube. The second air resistance region of the first main section of the first heat exchanger core has a dimension in the third direction, and the second fin has a dimension in the third direction, and the ratio of the dimension of the second air resistance region to the dimension of the second fin is greater than or equal to 10% and less than or equal to 70%.

[0012] According to an embodiment of the present invention, the spacing between the ends of at least some of the first heat exchange tubes connected to the first header is smaller than the spacing of the first heat exchange tubes in the first air resistance region.

[0013] According to an embodiment of the present invention, the first heat exchange tubes are flat tubes, and the spacing between the ends of at least some of the first heat exchange tubes connected to the first header is greater than or equal to the thickness of the first heat exchange tubes.

[0014] According to an embodiment of the present invention, the first heat exchange tubes include ends connected to the first header, the ends of the first heat exchange tubes include a plurality of end groups, and the spacing between the ends in each end group is smaller than the spacing of the first heat exchange tubes in the first air resistance region.

[0015] According to an embodiment of the present invention, the spacing between adjacent end groups is greater than the spacing between the ends in each end group.

[0016] According to an embodiment of the present invention, the first heat exchange tubes are flat tubes, and the spacing between the ends in each end group is greater than or equal to the thickness of the first heat exchange tubes.

[0017] According to an embodiment of the present invention, the first header includes a plurality of sub-headers, and each of the plurality of sub-headers is connected to and in fluid communication with the ends of one of the plurality of end groups of the first heat exchange tubes.

[0018] According to an embodiment of the present invention, the first main section of the first heat exchanger core further includes: first fins connected to the first heat exchange tubes, the first fins include first sub-fins located in the first air resistance region, and second sub-fins different from the first sub-fins located in the second air resistance region.

[0019] According to an embodiment of the present invention, the first sub-fins and the second sub-fins of the first fins are corrugated fins, and the peak pitch of the first sub-fins is greater than or equal to 50% of the peak pitch of the second sub-fins and less than or equal to 90% of the peak pitch of the second sub-fins.

[0020] According to an embodiment of the present invention, the second sub-fins of the first fins include a main body and a plurality of heat exchange tube slots formed in the main body of the second sub-fins, a plurality of the first heat exchange tubes are inserted into the heat exchange tube slots of the second sub-fins, and the first sub-fins of the first fins are corrugated fins.

[0021] According to an embodiment of the present invention, the peak pitch of the first sub-fins is greater than or equal to 50% of the pitch of the second sub-fins and less than or equal to the pitch of the second sub-fins.

[0022] According to an embodiment of the present invention, the first heat exchanger core includes a plurality of sub - heat exchanger cores arranged in a second direction, the first header includes a plurality of sub - headers, and each of the plurality of sub - headers is connected to and in fluid communication with a first heat exchange tube of one of the plurality of sub - heat exchanger cores.

[0023] According to an embodiment of the present invention, the first air resistance region is adjacent to the second air resistance region.

[0024] According to an embodiment of the present invention, the first main section of the first heat exchanger core further includes: a first fin connected to the first heat exchange tube, the first fin includes a first sub - fin extending into or near the boundary between the first air resistance region and the second air resistance region in the first air resistance region, and a second sub - fin extending in the first air resistance region and the second air resistance region.

[0025] According to an embodiment of the present invention, the first sub - fin and the second sub - fin of the first fin are corrugated fins and have a dimension in the extending direction of the first heat exchanger core. The dimension of the first sub - fin of the first fin is greater than or equal to 50% of the dimension of the second sub - fin of the first fin and less than the dimension of the second sub - fin of the first fin; or the first sub - fin and the second sub - fin of the first fin are corrugated fins and have a dimension in a third direction. The dimension of the first sub - fin of the first fin is greater than or equal to 50% of the dimension of the second sub - fin of the first fin and less than the dimension of the second sub - fin of the first fin.

[0026] According to an embodiment of the present invention, the number of the first sub - fins of the first fin is greater than or equal to 10% and less than or equal to 80% of the number of the second sub - fins of the first fin.

[0027] According to an embodiment of the present invention, the first sub - fin and the second sub - fin of the first fin are corrugated fins. The second sub - fin of the first fin includes: a first sub - fin segment located in the first air resistance region and a second sub - fin segment located in the second air resistance region. In the extending direction of the first heat exchanger core or in a third direction, the first sub - fin segment has the same dimension as the first sub - fin of the first fin. The peak - to - peak distance of the first sub - fin segment of the second sub - fin of the first fin is greater than or equal to 50% and less than or equal to 90% of the peak - to - peak distance of the second sub - fin segment.

[0028] According to an embodiment of the present invention, the peak - to - peak distance of the first sub - fin segment of the second sub - fin of the first fin is equal to the peak - to - peak distance of the first sub - fin of the first fin.

[0029] According to an embodiment of the present invention, the first sub - fin and the second sub - fin of the first fin have different types of fin structures.

[0030] According to an embodiment of the present invention, the first fin and the second fin have the same shape.

[0031] According to an embodiment of the present invention, the first main section of the first heat exchanger core further includes a drainage insert disposed between the first fin and the first header.

[0032] According to an embodiment of the present invention, the first main section of the first heat exchanger core further includes a drainage insert disposed between the first sub-fin and the second sub-fin of the first fin.

[0033] According to an embodiment of the present invention, the drainage insert includes a main body and a plurality of heat exchange tube slots formed in the main body of the drainage insert, and a plurality of first heat exchange tubes are inserted into the heat exchange tube slots of the drainage insert.

[0034] According to an embodiment of the present invention, the drainage insert is perpendicular to the axis of the first heat exchange tube or inclined with respect to the axis of the first heat exchange tube; or the drainage insert is perpendicular to the third direction or inclined with respect to the third direction; or the drainage insert is inclined with respect to the axis of the first header, or includes a plurality of connected drainage insert segments inclined with respect to the axis of the first header; or the drainage insert is inclined with respect to the second direction, or includes a plurality of connected drainage insert segments inclined with respect to the second direction.

[0035] According to an embodiment of the present invention, the second heat exchanger core further includes an outlet header connected to and in fluid communication with the second header, the first heat exchanger core further includes a refrigerant distribution device disposed in the first header, and / or the second heat exchanger core further includes a refrigerant collection device disposed in the second header.

[0036] According to an embodiment of the present invention, the first heat exchanger core and the second heat exchanger core are formed by bending a flat heat exchanger, and the first connection section and the second connection section are bending sections.

[0037] According to an embodiment of the present invention, the air resistance of the second air resistance region of the first main section of the first heat exchanger core is less than the air resistance of the second main section of the second heat exchanger core.

[0038] According to an embodiment of the present invention, the second air resistance region has a dimension in the extending direction of the first heat exchanger core, the first main section of the first heat exchanger core has a dimension in the extending direction of the first heat exchanger core, and the ratio of the dimension of the second air resistance region to the dimension of the first main section is greater than or equal to 20% and less than or equal to 50%; or the ratio of the dimension of the second air resistance region in the third direction to the dimension of the first main section of the first heat exchanger core in the third direction is greater than or equal to 20% and less than or equal to 50%.

[0039] An embodiment of the present invention further provides an air conditioning system, which includes the heat exchanger described above.

[0040] According to an embodiment of the present invention, the first manifold and the second manifold are horizontally arranged in use.

[0041] According to an embodiment of the present invention, in use, in the direction of air flowing through the heat exchanger, the second heat exchanger core is located upstream of the first heat exchanger core.

[0042] An embodiment of the present invention also provides a heat exchange system, which includes: an exothermic heat exchanger; and an endothermic heat exchanger, wherein at least one of the exothermic heat exchanger and the endothermic heat exchanger is the above-mentioned heat exchanger.

[0043] For the heat exchanger according to an embodiment of the present invention, the air-conditioning system having the heat exchanger, and the heat exchange system having the heat exchanger, by providing a low air resistance area, the performance of the heat exchanger, the air-conditioning system, and the heat exchange system can be improved. Description of the Drawings

[0044] Figure 1 Is a schematic perspective view of a heat exchanger according to a first embodiment of the present invention;

[0045] Figure 2 Is a schematic perspective view of a heat exchanger according to a modified example of the first embodiment of the present invention;

[0046] Figure 3 Is a schematic perspective view of the fins of the heat exchanger according to the first embodiment of the present invention;

[0047] Figure 4 Is a schematic perspective view of a heat exchanger according to a second embodiment of the present invention;

[0048] Figure 5 Is a schematic front view of the first heat exchanger core of the heat exchanger according to the second embodiment of the present invention;

[0049] Figure 6 Is Figure 5 A schematic right view of a part of the first heat exchanger core of the heat exchanger shown;

[0050] Figure 7 Is Figure 5 A schematic perspective view of the drainage insert of the first heat exchanger core of the heat exchanger shown;

[0051] Figure 8 Is Figure 7 A schematic bottom view of the drainage insert of the first heat exchanger core of the heat exchanger shown;

[0052] Figure 9 Is Figure 7 A schematic perspective view of the drainage insert of the first heat exchanger core of the heat exchanger shown;

[0053] Figure 10Schematic front view of the first heat exchanger core of the heat exchanger according to the second embodiment of the present invention;

[0054] Figure 11 Is Figure 10 Schematic right view of a part of the first heat exchanger core of the heat exchanger shown;

[0055] Figure 12 Schematic front view of the first heat exchanger core of the heat exchanger according to the second embodiment of the present invention;

[0056] Figure 13 Schematic front view of the first heat exchanger core of the heat exchanger according to the second embodiment of the present invention;

[0057] Figure 14 Schematic perspective view of the heat exchanger according to the third embodiment of the present invention;

[0058] Figure 15 Schematic perspective view of the heat exchanger according to the fourth embodiment of the present invention;

[0059] Figure 16 Is Figure 15 Schematic front view of the first heat exchanger core of the heat exchanger shown;

[0060] Figure 17 Schematic perspective view of the heat exchanger according to the fifth embodiment of the present invention;

[0061] Figure 18 Schematic perspective view of the heat exchanger according to the sixth embodiment of the present invention;

[0062] Figure 19 Is Figure 18 Schematic front view of the first heat exchanger core of the heat exchanger shown;

[0063] Figure 20 Schematic perspective view of the heat exchanger according to the seventh embodiment of the present invention;

[0064] Figure 21 Is Figure 20 Schematic front view of the first heat exchanger core of the heat exchanger shown;

[0065] Figure 22 Schematic perspective view of the heat exchanger according to the eighth embodiment of the present invention;

[0066] Figure 23 Is Figure 22 Schematic enlarged perspective view of the second sub-fin of the first heat exchanger core of the heat exchanger shown;

[0067] Figure 24 Is Figure 22Schematic enlarged top view of the second sub-fin of the first heat exchanger core of the heat exchanger shown;

[0068] Figure 25 Schematic perspective view of a heat exchanger according to the ninth embodiment of the present invention;

[0069] Figure 26 Schematic perspective view of a heat exchanger according to the tenth embodiment of the present invention;

[0070] Figure 27 is Figure 26 Schematic front view of the first heat exchanger core of the heat exchanger shown;

[0071] Figure 28 Schematic front view of the first heat exchanger core of a heat exchanger according to the tenth embodiment of the present invention;

[0072] Figure 29 Schematic front view of the first heat exchanger core of a heat exchanger according to the tenth embodiment of the present invention;

[0073] Figure 30 Schematic front view of the first heat exchanger core of a heat exchanger according to the tenth embodiment of the present invention;

[0074] Figure 31 Schematic front view of the first heat exchanger core of a heat exchanger according to the tenth embodiment of the present invention;

[0075] Figure 32 Schematic front view of the first heat exchanger core of a heat exchanger according to the tenth embodiment of the present invention;

[0076] Figure 33 Schematic perspective view of a heat exchanger according to the eleventh embodiment of the present invention;

[0077] Figure 34 Schematic front view of a part of the first heat exchanger core of a heat exchanger according to the eleventh embodiment of the present invention;

[0078] Figure 35 Schematic front view of a part of the first heat exchanger core of a heat exchanger according to the eleventh embodiment of the present invention;

[0079] Figure 36 Schematic front view of a part of the first heat exchanger core of a heat exchanger according to the eleventh embodiment of the present invention; and

[0080] Figure 37 Schematic front view of a part of the first heat exchanger core of a heat exchanger according to the eleventh embodiment of the present invention. Detailed Description

[0081] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0082] The following describes specific embodiments according to the present invention.

[0083] First Embodiment

[0084] Figure 1 FIG. 100 is a schematic perspective view of a heat exchanger 100 according to a first embodiment of the present invention; Figure 2 FIG. 100 is a schematic perspective view of a heat exchanger 100 according to a modified example of the first embodiment of the present invention; and Figure 3 FIG. 12, 22 are schematic perspective views of fins of a heat exchanger 100 according to a first embodiment of the present invention.

[0085] See Figure 1, the heat exchanger 100 according to an embodiment of the present invention includes: a first heat exchanger core 1 and a second heat exchanger core 2 arranged side by side in a first direction D1. The first heat exchanger core 1 includes: a first main section 10, the first main section 10 of the first heat exchanger core 1 includes a plurality of first heat exchange tubes 11 arranged in a second direction D2 perpendicular to the first direction D1; a first connection section 19 connected to the first main section 10; and a first header 13 connected to and in fluid communication with the plurality of first heat exchange tubes 11 on a side of the first main section 10 of the first heat exchanger core 1 opposite to the first connection section 19. The second heat exchanger core 2 includes: a second main section 20, the second main section 20 of the second heat exchanger core 2 includes: a plurality of second heat exchange tubes 21 arranged in the second direction D2; a second connection section 29 connected to the second main section 20; and a second header 23 connected to and in fluid communication with the plurality of second heat exchange tubes 21 on a side of the second main section 20 of the second heat exchanger core 2 opposite to the second connection section 29. The plurality of first heat exchange tubes 11 of the first main section 10 of the first heat exchanger core 1 and the plurality of second heat exchange tubes 21 of the second main section 20 of the second heat exchanger core 2 are connected to each other and in fluid communication through the first connection section 19 of the first heat exchanger core 1 and the second connection section 29 of the second heat exchanger core 2. The first main section 10 of the first heat exchanger core 1 includes a first wind resistance area 17 and a second wind resistance area 18 arranged in a third direction D3 perpendicular to the first direction D1 and the second direction D2 or in a first heat exchanger core extension direction C1 perpendicular to the second direction D2 and parallel to the first plane where the first main section 10 of the first heat exchanger core 1 is located. The second wind resistance area 18 is adjacent to the first header 13, and the wind resistance of the second wind resistance area 18 is less than the wind resistance of the first wind resistance area 17. In addition, the wind resistance of the second wind resistance area 18 of the first main section 10 of the first heat exchanger core 1 may be less than the wind resistance of the second main section 20 of the second heat exchanger core 2. It should be noted that the wind resistance is the wind resistance at a constant wind speed. The wind resistance of the first wind resistance area 17 of the first main section 10 of the first heat exchanger core 1 may be equal to the wind resistance of the second main section 20 of the second heat exchanger core 2. The included angle α between the first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 may be greater than or equal to 0 degrees and less than or equal to 45 degrees. Of course, the included angle α between the first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 may also be greater than 45 degrees. In the embodiment shown in the figure, only the case where the included angle α is equal to 0 degrees is shown.

[0086] In an embodiment of the present invention, the first heat exchanger core 1 and the second heat exchanger core 2 can be formed by bending a flat heat exchanger, and the first connecting section 19 and the second connecting section 29 are bending sections. As an alternative, a plurality of first heat exchange tubes 11 of the first heat exchanger core 1 and a plurality of second heat exchange tubes 21 of the second heat exchanger core 2 can be connected to each other through a plurality of connecting tubes respectively, and the connecting tubes form the first connecting section 19 and the second connecting section 29. In addition, the plurality of first heat exchange tubes 11 of the first heat exchanger core 1 and the plurality of second heat exchange tubes 21 of the second heat exchanger core 2 can also be connected to each other in other ways.

[0087] See Figure 1 , in an embodiment of the present invention, for the first air resistance region 17, the first air resistance region 17 has a dimension in the first heat exchanger core extending direction C1, the first main section 10 of the first heat exchanger core 1 has a dimension in the first heat exchanger core extending direction C1, and the ratio of the dimension of the first air resistance region 17 to the dimension of the first main section 10 is greater than or equal to 20% and less than or equal to 90%; or the ratio of the dimension of the first air resistance region 17 in the third direction D3 to the dimension of the first main section 10 of the first heat exchanger core 1 in the third direction D3 is greater than or equal to 20% and less than or equal to 90%; or the ratio of the part of the length of the first heat exchange tube 11 occupied by the first air resistance region 17 to the length of the first heat exchange tube 11 is greater than or equal to 20% and less than or equal to 90%. For the second air resistance region 18, the second air resistance region 18 has a dimension in the first heat exchanger core extending direction C1, the first main section 10 of the first heat exchanger core 1 has a dimension in the first heat exchanger core extending direction C1, and the ratio of the dimension of the second air resistance region 18 to the dimension of the first main section 10 is greater than or equal to 20% and less than or equal to 50%; or the ratio of the dimension of the second air resistance region 18 in the third direction D3 to the dimension of the first main section 10 of the first heat exchanger core 1 in the third direction D3 is greater than or equal to 20% and less than or equal to 50%.

[0088] See Figure 1 , in an embodiment of the present invention, the first heat exchanger core 1 has a first orthographic projection on the second plane where the second main section 20 of the second heat exchanger core 2 is located, the second heat exchanger core 2 has a second orthographic projection on the second plane where the second main section 20 of the second heat exchanger core 2 is located, and the ratio of the overlapping area of the first orthographic projection of the first heat exchanger core 1 and the second orthographic projection of the second heat exchanger core 2 to the area of the second orthographic projection of the second heat exchanger core 2 is greater than or equal to 50% and less than or equal to 100%.

[0089] See Figure 1, in an embodiment of the present invention, the first heat exchanger core 1 has a dimension in the first heat exchanger core extension direction C1, and the second heat exchanger core 2 has a dimension in the second heat exchanger core extension direction C2 that is perpendicular to the second direction D2 and parallel to the second plane in which the second main section 20 of the second heat exchanger core 2 is located. The ratio between the dimension of the first heat exchanger core 1 and the dimension of the second heat exchanger core 2 is greater than or equal to 30% and less than or equal to 100%, for example, greater than or equal to 60% and less than or equal to 100%. As an alternative, the ratio between the dimension of the first heat exchanger core 1 in the third direction D3 and the dimension of the second heat exchanger core 2 in the third direction D3 is greater than or equal to 30% and less than or equal to 100%, for example, greater than or equal to 60% and less than or equal to 100%.

[0090] In the embodiment shown in the figure, the third direction D3 is parallel to the first heat exchanger core extension direction C1 and the second heat exchanger core extension direction C2. When the angle α between the first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 is greater than 0 degrees, for example, the third direction D3 can be parallel to the first plane in which the first main section 10 of the first heat exchanger core 1 is located or the second plane in which the second main section 20 of the second heat exchanger core 2 is located. The first plane and the second plane are symmetric with respect to the plane in which the third direction D3 is located, or the first plane and the second plane are inclined with respect to the third direction D3. Thus, the third direction D3 is parallel to the first heat exchanger core extension direction C1 or the second heat exchanger core extension direction C2, or the third direction D3 is inclined with respect to the first heat exchanger core extension direction C1 and the second heat exchanger core extension direction C2.

[0091] See Figure 1, in an embodiment of the present invention, the first main section 10 of the first heat exchanger core 1 further includes: a first fin 12 disposed in the first wind resistance area 17 and connected to the first heat exchange tube 11, and there is no fin in the second wind resistance area 18 of the first main section 10 of the first heat exchanger core 1. The second main section 20 of the second heat exchanger core 2 further includes: a second fin 22 connected to the second heat exchange tube 21. The second wind resistance area 18 of the first main section 10 of the first heat exchanger core 1 has a dimension in the extending direction C1 of the first heat exchanger core, and the second main section 20 of the second heat exchanger core 2 has a dimension in the extending direction C2 of the second heat exchanger core, and the ratio of the dimension of the second wind resistance area 18 to the dimension of the second main section 20 of the second heat exchanger core 2 is greater than or equal to 10% and less than or equal to 70%; or the second wind resistance area 18 of the first main section 10 of the first heat exchanger core 1 has a dimension in the third direction D3, and the second main section 20 of the second heat exchanger core 2 has a dimension in the third direction D3, and the ratio of the dimension of the second wind resistance area 18 to the dimension of the second main section 20 of the second heat exchanger core 2 is greater than or equal to 10% and less than or equal to 70%.

[0092] See Figure 1 , in an embodiment of the present invention, the first main section 10 of the first heat exchanger core 1 further includes: a first fin 12 disposed in the first wind resistance area 17 and connected to the first heat exchange tube 11, and there is no fin in the second wind resistance area 18 of the first main section 10 of the first heat exchanger core 1. The second main section 20 of the second heat exchanger core 2 further includes: a wavy second fin 22 connected to the second heat exchange tube 21 and arranged alternately with the second heat exchange tube 21. The second wind resistance area 18 of the first main section 10 of the first heat exchanger core 1 has a dimension in the extending direction C1 of the first heat exchanger core, and the second fin 22 has a dimension in the extending direction C2 of the second heat exchanger core, and the ratio of the dimension of the second wind resistance area 18 to the dimension of the second fin 22 is greater than or equal to 10% and less than or equal to 70%; or the second wind resistance area 18 of the first main section 10 of the first heat exchanger core 1 has a dimension in the third direction D3, and the second fin 22 has a dimension in the third direction D3, and the ratio of the dimension of the second wind resistance area 18 to the dimension of the second fin 22 is greater than or equal to 10% and less than or equal to 70%.

[0093] See Figure 1 , in an embodiment of the present invention, the first fin 12 and the second fin 22 have the same shape.

[0094] Figure 2 The heat exchanger 100 of the variant of the embodiment shown is different from Figure 1 the heat exchanger 100 of the embodiment shown in that an outlet header is provided. See Figure 2, in an embodiment of the present invention, the second heat exchanger core 2 further includes an outlet header 24 connected to and in fluid communication with the second header 23. The outlet header 24 and the second header 23 may be substantially parallel.

[0095] The following describes Figures 1 to 3 the specific examples shown.

[0096] The heat exchanger 100 includes: a first heat exchanger core 1 and a second heat exchanger core 2. The first heat exchanger core 1 includes: a first main section 10 and a first header 13. The first main section 10 includes a plurality of first heat exchange tubes 11 and a plurality of first fins 12. The first heat exchange tubes 11 are arranged at intervals along the axial direction of the first header 13, and at the same time, the first fins 12 are arranged at intervals between the first heat exchange tubes 11. The first heat exchange tubes 11 are connected to the first header 13. The second heat exchanger core 2 includes: a second main section 20 and a second header 23. The second main section 20 includes a plurality of second heat exchange tubes 21 and a plurality of second fins 22. The second heat exchange tubes 21 are arranged at intervals along the axial direction of the second header 23, and at the same time, the second fins 22 are arranged at intervals between the second heat exchange tubes 21. The second heat exchange tubes 21 are connected to the second header 23. The heat exchange tubes may be flat tubes.

[0097] The first heat exchanger core 1 and the second heat exchanger core 2 form a channel for the refrigerant to flow. For example, the first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 are respectively connected to each other to form a flow channel. The first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 may also be respectively connected to each other through an adapter to form a flow channel, or the first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 may be connected through an adapter rather than being connected in a one-to-one correspondence. The first heat exchanger core 1 and the second heat exchanger core 2 are arranged in a front-back arrangement in the thickness direction of the heat exchanger 100. The first heat exchanger core 1 may be on the leeward side, and the first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 may form a certain angle α.

[0098] The length of the first heat exchange tubes 11 of the first heat exchanger core 1 is TL, the peak pitch of the first fins 12 is FP, the width of the first fins 12 is FW, and the length of the first fins 12 is FL. The length of the second heat exchange tubes 21 of the second heat exchanger core 2 is tl, the peak pitch of the second fins 22 is fp, the width of the second fins 22 is fw, and the length of the second fins 22 is fl.

[0099] In Figures 1 to 3 the specific examples shown, the heat transfer amount on the air side of the first heat exchanger core 1 is adjusted by reducing the heat transfer area of the first heat exchanger core 1, and finally the condensation water amount of the heat exchanger 100 is reduced.

[0100] The heat exchanger 100 of the first embodiment has the following characteristics:

[0101] The height H of the first heat exchanger core 1 = the height h of the second heat exchanger core 2;

[0102] 0° ≤ the included angle α between the first heat exchanger core 1 and the second heat exchanger core 2 ≤ 45°;

[0103] When the outer diameter of the first header 13 is equal to the outer diameter of the second header 23, the length TL of the first heat exchange tube 11 is equal to the length tl of the second heat exchange tube 21;

[0104] The structure of the first fin 12 is the same as the structure of the second fin 22;

[0105] 30% * the length fl of the second fin 22 ≤ the length FL of the first fin 12 ≤ 90% * the length fl of the second fin 22.

[0106] See Figure 2 , the second heat exchanger core 2 further includes an outlet header 24 connected to and in fluid communication with the second header 23. The second header 23 and the outlet header 24 are interconnected and in fluid communication through a connecting pipe 3. The second heat exchanger core 2 may further include other headers disposed between the second header 23 and the outlet header 24 and interconnected and in fluid communication with the second header 23 and the outlet header 24.

[0107] Second Embodiment

[0108] Figure 4 Fig. is a schematic perspective view of the heat exchanger 100 according to the second embodiment of the present invention; Figure 5 Fig. is a schematic front view of the first heat exchanger core 1 of the heat exchanger 100 according to the second embodiment of the present invention; Figure 6 For Figure 5 Fig. is a schematic right view of a part of the first heat exchanger core 1 of the heat exchanger 100 shown; Figure 7 For Figure 5 Fig. is a schematic perspective view of the drain insert 16 of the first heat exchanger core 1 of the heat exchanger 100 shown; Figure 8 For Figure 7 Fig. is a schematic bottom view of the drain insert 16 of the first heat exchanger core 1 of the heat exchanger 100 shown; Figure 9 For Figure 7 Fig. is a schematic perspective view of the drain insert 16 of the first heat exchanger core 1 of the heat exchanger 100 shown; Figure 10 Fig. is a schematic front view of the first heat exchanger core 1 of the heat exchanger 100 according to the second embodiment of the present invention; Figure 11 For Figure 10 Fig. is a schematic right view of a part of the first heat exchanger core 1 of the heat exchanger 100 shown; Figure 12Schematic front view of the first heat exchanger core 1 of the heat exchanger 100 according to the second embodiment of the present invention; and Figure 13 Schematic front view of the first heat exchanger core 1 of the heat exchanger 100 according to the second embodiment of the present invention.

[0109] Figures 4 to 13 The heat exchanger 100 of the second embodiment shown is obtained by adding a drainage structure (for example, a drainage insert 16) to the heat exchanger 100 of the first embodiment.

[0110] See Figures 4 to 13 , in the embodiment of the present invention, the first main section 10 of the first heat exchanger core 1 further includes a drainage insert 16 provided between the first fins 12 and the first header 13 or below the first fins 12.

[0111] See Figures 7 to 9 , in the embodiment of the present invention, the drainage insert 16 may have a comb shape. The drainage insert 16 includes a main body 160 and a plurality of heat exchange tube slots 161 formed in the main body 160 of the drainage insert 16. A plurality of first heat exchange tubes 11 are inserted into the plurality of heat exchange tube slots 161 of the drainage insert 16. The drainage insert 16 may further include a water baffle 162.

[0112] See Figures 4 to 13 , in the embodiment of the present invention, the drainage insert 16 (for example, the length direction and / or width direction of the drainage insert 16) is perpendicular to the axis of the first heat exchange tube 11 or inclined with respect to the axis of the first heat exchange tube 11; or the drainage insert 16 (for example, the length direction and / or width direction of the drainage insert 16) is perpendicular to the third direction D3 or inclined with respect to the third direction D3. For example, the drainage insert 16 (for example, the length direction of the drainage insert 16) is inclined with respect to the axis of the first header 13, or includes a plurality of connected drainage insert segments 16S (for example, the length direction) inclined with respect to the axis of the first header 13; or the drainage insert 16 (for example, the length direction of the drainage insert 16) is inclined with respect to the second direction D2, or includes a plurality of connected drainage insert segments 16S (for example, the length direction) inclined with respect to the second direction D2.

[0113] The following describes Figures 4 to 13 the specific examples shown.

[0114] Figures 4 to 13 The heat exchanger 100 shown has the following characteristics:

[0115] The height H of the first heat exchanger core 1 = the height h of the second heat exchanger core 2;

[0116] When the outer diameter of the first header 13 is equal to the outer diameter of the second header 23, the length TL of the first heat exchange tube 11 is equal to the length tl of the second heat exchange tube 21;

[0117] The structure of the first fin 12 is the same as that of the second fin 22;

[0118] 30% * the length f1 of the second fin 22 ≤ the length FL of the first fin 12 ≤ 90% *

[0119] the length f1 of the second fin 22.

[0120] In the heat exchanger shown in the figure, a drain insert 16 with water collection and drainage functions is added below the first fin 12.

[0121] The heat exchanger 100 may include a refrigerant distribution device. As Figures 7 to 9 shown, the drain insert 16 includes: a main body 160; a plurality of heat exchange tube slots 161 arranged in parallel formed in the main body 160 of the drain insert 16; and a water baffle 162 extending from the edge in the width direction of the main body 160 to one side in the thickness direction of the main body 160 (for example, the upper side in use). The water baffle 162 can be formed by bending and forms a certain angle with the main body 160 (for example, an angle of 60 degrees to 135 degrees, an angle of 90 degrees to 120 degrees, etc.). The water baffle 162 and the main body 160 form a water collection space and a drainage path.

[0122] The drain insert 16 can form a certain angle with the first heat exchange tube 11 to facilitate the rapid flow of condensed water into the water collection space, as Figure 10 , 11 shown.

[0123] The drain insert 16 can form a certain angle with the first header 13 to facilitate the rapid flow of condensed water through the drainage path to one side or both sides of the first heat exchanger core 1, as Figure 12 and Figure 13 shown.

[0124] For the heat exchanger 100 of this embodiment, the first heat exchanger core 1 may further include a refrigerant distribution device provided in the first header 13. Thus, the refrigerant can be reasonably and evenly distributed into a plurality of first heat exchange tubes 11. The second heat exchanger core 2 may further include a refrigerant collection device provided in the second header 23. Thus, the pressure distribution of the refrigerant can be reasonably adjusted to achieve a more effective heat exchange effect. In addition, the second header 23 may include a plurality of sub - headers.

[0125] Third Embodiment

[0126] Figure 14 is a schematic perspective view of a heat exchanger according to the third embodiment of the present invention. Figure 14 The heat exchanger 100 shown is obtained by adjusting the height of the first heat exchanger core 1 on the basis of the heat exchanger 100 of the first embodiment.

[0127] The heat exchanger 100 of the third embodiment has the following characteristics:

[0128] 30% * the height h of the second heat exchanger core 2 ≤ the height H of the first heat exchanger core 1 ≤ 90% * the height h of the second heat exchanger core 2;

[0129] When the outer diameter of the first header 13 is equal to the outer diameter of the second header 23, 30% * the length tl of the second heat exchange tube 21 ≤ the length TL of the first heat exchange tube 11 ≤ 90% * the length tl of the second heat exchange tube 21;

[0130] The structure of the first fin 12 is the same as the structure of the second fin 22;

[0131] 20% * the length f1 of the second fin 22 ≤ the length FL of the first fin 12 ≤ 80% * the length f1 of the second fin 22;

[0132] Similarly, like the second embodiment, the heat exchanger 100 of the third embodiment may also include a drain insert 16 with a drain function.

[0133] Fourth Embodiment

[0134] Figure 15 is a schematic perspective view of a heat exchanger 100 according to a fourth embodiment of the present invention; and Figure 16 is Figure 15 a schematic front view of the first heat exchanger core 1 of the heat exchanger 100 shown.

[0135] The heat exchanger 100 according to the fourth embodiment of the present invention is different from the heat exchanger 100 according to the first embodiment of the present invention in that fins, sub - fins, a part of the fins, or a part of the sub - fins are provided in the second air resistance region 18.

[0136] Referring to Figures 15 to 16 , in the embodiment of the present invention, the first main section 10 of the first heat exchanger core 1 further includes: a first fin 12 connected to the first heat exchange tube 11, the first fin 12 includes a first sub - fin 121 located in the first air resistance region 17, and a second sub - fin 122 different from the first sub - fin 121 located in the second air resistance region 18. The first sub - fin 121 and the second sub - fin 122 of the first fin 12 may have the same type of fin structure or different types of fin structures. In this embodiment, the first sub - fin 121 and the second sub - fin 122 of the first fin 12 have the same type of fin structure.

[0137] For example, referring to Figures 15 to 16, the first sub-fin 121 and the second sub-fin 122 of the first fin 12 are corrugated fins, and the peak distance of the first sub-fin 121 is greater than or equal to 50% of the peak distance of the second sub-fin 122 and less than or equal to 90% of the peak distance of the second sub-fin 122. The first sub-fin 121 and the second sub-fin 122 of the first fin 12 can be integral fins or separate fins.

[0138] The specific examples described below Figures 15 to 16 shown.

[0139] Figures 15 to 16 The heat exchanger 100 shown includes: a first heat exchanger core 1 and a second heat exchanger core 2. The first heat exchanger core 1 includes: a first main section 10 and a first header 13. The first main section 10 includes a plurality of first heat exchange tubes 11 and a plurality of first fins 12. The first fin 12 includes a first sub-fin 121 and a second sub-fin 122. The first sub-fin 121 and the second sub-fin 122 can be independent fins or different parts of the same fin. The first fin 12 can be formed by splicing an independent first sub-fin 121 and a second sub-fin 122. The first heat exchange tubes 11 are arranged at intervals along the axial direction of the first header 13, while the first fins 12 are arranged at intervals between the first heat exchange tubes 11, and the first heat exchange tubes 11 are connected to the first header 13. The second heat exchanger core 2 includes: a second main section 20 and a second header 23. The second main section 20 includes a plurality of second heat exchange tubes 21 and a plurality of second fins 22. The second heat exchange tubes 21 are arranged at intervals along the axial direction of the second header 23, while the second fins 22 are arranged at intervals between the second heat exchange tubes 21, and the second heat exchange tubes 21 are connected to the second header 23. The heat exchange tubes can be flat tubes.

[0140] The first heat exchanger core 1 and the second heat exchanger core 2 form a channel for the refrigerant to flow. For example, the first heat exchange tubes 11 of the first heat exchanger core 1 are connected to the second heat exchange tubes 21 of the second heat exchanger core 2 to form a flow channel. The first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 can also be respectively connected through an adapter to form a flow channel, or the first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 can be connected through an adapter rather than being connected in a one-to-one correspondence. The first heat exchanger core 1 and the second heat exchanger core 2 are arranged in a front-back arrangement in the thickness direction of the heat exchanger 100. The first heat exchanger core 1 can be on the leeward side. The first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 can be arranged in parallel, or the first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 can form a certain angle.

[0141] The length of the first heat exchange tube 11 of the first heat exchanger core 1 is TL, the peak distance of the first sub-fin 121 is FP1, the length of the first sub-fin 121 is FL1, the peak distance of the second sub-fin 122 is FP2, and the length of the second sub-fin 122 is FL2; the length of the second heat exchange tube 21 of the second heat exchanger core 2 is tl, the peak distance of the second fin 22 is fp, and the length of the second fin 22 is fl.

[0142] In the fourth embodiment, the heat transfer amount on the air side of the first heat exchanger core 1 is adjusted by reducing the heat transfer intensity of the first heat exchanger core 1, that is, the fin density, and finally the condensation water amount of the heat exchanger 100 is reduced. The characteristics of the heat exchanger 100 in the fourth embodiment are as follows:

[0143] The height H of the first heat exchanger core 1 = the height h of the second heat exchanger core 2;

[0144] When the outer diameter of the first header 13 is equal to the outer diameter of the second header 23, the length TL of the first heat exchange tube 11 = the length tl of the second heat exchange tube 21;

[0145] The structure of the first fin 12 is the same as the structure of the second fin 22;

[0146] 30% * the length fl of the second fin 22 ≤ the length FL1 of the first sub-fin 121 ≤ 90% * the length fl of the second fin 22;

[0147] 50% * the length fl of the second fin 22 ≤ the length FL1 of the first sub-fin 121 + the length FL2 of the second sub-fin 122 ≤ the length fl of the second fin 22;

[0148] 50% * the peak distance FP2 of the second sub-fin 122 ≤ the peak distance FP1 of the first sub-fin 121 ≤ 90% * the peak distance FP2 of the second sub-fin 122.

[0149] The fifth embodiment

[0150] Figure 17 is a schematic perspective view of a heat exchanger according to the fifth embodiment of the present invention.

[0151] Figure 17 The shown heat exchanger 100 is obtained by adjusting the height of the first heat exchanger core 1 on the basis of the heat exchanger 100 in the fourth embodiment. The characteristics of the heat exchanger 100 in the fifth embodiment are as follows:

[0152] 30% * the height h of the second heat exchanger core 2 ≤ the height H of the first heat exchanger core 1 ≤ 90% * the height h of the second heat exchanger core 2;

[0153] When the outer diameter of the first header pipe 13 is equal to the outer diameter of the second header pipe 23, 30% * the length tl of the second heat exchange pipe 21 ≤ the length TL of the first heat exchange pipe 11 ≤ 90% * the length tl of the second heat exchange pipe 21;

[0154] The structure of the first fin 12 is the same as the structure of the second fin 22;

[0155] 20% * the length fl of the second fin 22 ≤ the length FL1 of the first sub-fin 121 ≤ 80% * the length fl of the second fin 22;

[0156] 40% * the length fl of the second fin 22 ≤ the length FL1 of the first sub-fin 121 + the length FL2 of the second sub-fin 122 ≤ 90% * the length fl of the second fin 22;

[0157] 50% * the peak pitch FP2 of the second sub-fin 122 ≤ the peak pitch FP1 of the first sub-fin 121 ≤ 90% * the peak pitch FP2 of the second sub-fin 122;

[0158] Similarly, like the second embodiment, the heat exchanger 100 of the third embodiment may also include a drainage insert 16 with a drainage function.

[0159] Sixth Embodiment

[0160] Figure 18 is a schematic perspective view of a heat exchanger 100 according to the sixth embodiment of the present invention; and Figure 19 is Figure 18 a schematic front view of the first heat exchanger core 1 of the heat exchanger 100 shown.

[0161] The heat exchanger 100 according to the sixth embodiment of the present invention is different from the heat exchanger 100 according to the first embodiment of the present invention in that fins, sub-fins, a part of the fins, or a part of the sub-fins are provided in a part of the second air resistance region 18.

[0162] See Figures 18 to 19, in an embodiment of the present invention, the first air resistance region 17 is adjacent to the second air resistance region 18. The first main section 10 of the first heat exchanger core 1 further includes: first fins 12 connected to the first heat exchange tubes 11. The first fins 12 include first sub-fins 121 extending into the boundary between the first air resistance region 17 and the second air resistance region 18 or near the boundary in the first air resistance region 17, and second sub-fins 122 extending in both the first air resistance region 17 and the second air resistance region 18. The first sub-fins 121 only extend in the first air resistance region 17. The second sub-fins 122 extend in the first air resistance region 17 and also extend in the second air resistance region 18. According to an embodiment of the present invention, the number of the first sub-fins 121 of the first fins 12 may be greater than or equal to 10% of the number of the second sub-fins 122 of the first fins 12 and less than or equal to 80% of the number of the second sub-fins 122 of the first fins 12.

[0163] See Figures 18 to 19 , in an embodiment of the present invention, the first sub-fins 121 and the second sub-fins 122 of the first fins 12 are corrugated fins. The first sub-fins 121 of the first fins 12 have a dimension in the extending direction C1 of the first heat exchanger core. The second sub-fins 122 of the first fins 12 have a dimension in the extending direction C1 of the first heat exchanger core. The dimension of the first sub-fins 121 of the first fins 12 is greater than or equal to 50% of the dimension of the second sub-fins 122 of the first fins 12 and less than the dimension of the second sub-fins 122 of the first fins 12; as an alternative, the first sub-fins 121 of the first fins 12 have a dimension in the third direction D3, the second sub-fins 122 of the first fins 12 have a dimension in the third direction D3, and the dimension of the first sub-fins 121 of the first fins 12 is greater than or equal to 50% of the dimension of the second sub-fins 122 of the first fins 12 and less than the dimension of the second sub-fins 122 of the first fins 12. See Figures 18 to 19 , in an embodiment of the present invention, the first sub-fins 121 and the second sub-fins 122 of the first fins 12 are corrugated fins. The first sub-fins 121 and the second sub-fins 122 of the first fins 12 may have the same peak distance. The second sub-fins 122 of the first fins 12 include: a first sub-fin segment 1221 located in the first air resistance region 17 and a second sub-fin segment 1222 located in the second air resistance region 18.

[0164] The following describes Figures 18 to 19 the specific examples shown.

[0165] Figures 18 to 19The heat exchanger 100 shown includes: a first heat exchanger core 1 and a second heat exchanger core 2. The first heat exchanger core 1 includes: a first main section 10 and a first header 13. The first main section 10 includes a plurality of first heat exchange tubes 11 and a plurality of first fins 12. The first fin 12 includes a first sub-fin 121 and a second sub-fin 122. The second sub-fin 122 includes a first sub-fin segment 1221 and a second sub-fin segment 1222. The first sub-fin segment 1221 and the second sub-fin segment 1222 can be independent fins or different parts of the same fin. For example, the second sub-fin 122 is formed by splicing the first sub-fin segment 1221 and the second sub-fin segment 1222 which are independent fins. The first heat exchange tubes 11 are arranged at intervals along the axial direction of the first header 13. At the same time, the first fins 12 are arranged at intervals between the first heat exchange tubes 11. The first heat exchange tubes 11 are connected to the first header 13. The second heat exchanger core 2 includes: a second main section 20 and a second header 23. The second main section 20 includes a plurality of second heat exchange tubes 21 and a plurality of second fins 22. The second heat exchange tubes 21 are arranged at intervals along the axial direction of the second header 23. At the same time, the second fins 22 are arranged at intervals between the second heat exchange tubes 21. The second heat exchange tubes 21 are connected to the second header 23.

[0166] The first heat exchanger core 1 and the second heat exchanger core 2 form a channel for the refrigerant to flow through. For example, the first heat exchange tubes 11 of the first heat exchanger core 1 are connected to the second heat exchange tubes 21 of the second heat exchanger core 2 to form a flow channel. The first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 can also be respectively connected to each other through an adapter to form a flow channel. Or the first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 can be connected to each other through an adapter rather than being connected in a one-to-one correspondence. The first heat exchanger core 1 and the second heat exchanger core 2 are arranged front and back in the thickness direction of the heat exchanger 100. The first heat exchanger core 1 can be on the leeward side. The first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 can be arranged in parallel, or the first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 can form a certain angle.

[0167] The length of the first heat exchange tube 11 of the first heat exchanger core 1 is TL, the peak distance of the first sub-fin 121 is FP1, the length of the first sub-fin 121 is FL1, the number of the first sub-fins 121 is N1, the peak distance of the first sub-fin segment 1221 is FP2A, the length of the first sub-fin segment 1221 is FL2A, the number of the first sub-fin segments 1221 is N2A, the peak distance of the second sub-fin segment 1222 is FP2B, the length of the second sub-fin segment 1222 is FL2B, the number of the second sub-fin segments 1222 is N2B, the length of the second sub-fin 122 is FL2 (FL2 = FL2A + FL2B), and the number of the second sub-fins 122 is N2; the length of the second heat exchange tube 21 of the second heat exchanger core 2 is tl, the peak distance of the second fin 22 is fp, and the length of the second fin 22 is fl.

[0168] In the sixth embodiment, the heat transfer amount on the air side of the first heat exchanger core 1 is adjusted by reducing the heat transfer intensity of the first heat exchanger core 1, that is, the fin density and the number, and finally the condensation water amount of the heat exchanger 100 is reduced. The heat exchanger 100 of the sixth embodiment has the following characteristics:

[0169] The height H of the first heat exchanger core 1 = the height h of the second heat exchanger core 2;

[0170] When the outer diameter of the first header 13 is equal to the outer diameter of the second header 23, the length TL of the first heat exchange tube 11 = the length tl of the second heat exchange tube 21;

[0171] The structure of the first fin 12 is the same as the structure of the second fin 22;

[0172] 30% * the length fl of the second fin 22 ≤ the length FL1 of the first sub-fin 121 ≤ 90% * the length fl of the second fin 22;

[0173] 50% * the length fl of the second fin 22 ≤ the length FL2A of the first sub-fin segment 1221 + the length FL2B of the second sub-fin segment 1222 ≤ the length fl of the second fin 22;

[0174] 50% * the length FL1 of the first sub-fin 121 ≤ the length FL2A of the first sub-fin segment 1221 ≤ the length FL1 of the first sub-fin 121;

[0175] The peak distance FP2A of the first sub-fin segment 1221 = the peak distance FP1 of the first sub-fin 121;

[0176] 50% * the peak distance FP2B of the second sub-fin segment 1222 ≤ the peak distance FP2A of the first sub-fin segment 1221 ≤ 90% * the peak distance FP2B of the second sub-fin segment 1222;

[0177] The number N1 of the first sub-fins 121 + the number N2 of the second sub-fins 122 = the number n of the second fins;

[0178] 10% * the number n of the second fins ≤ the number N2 of the second sub-fins 122 ≤ 80% * the number n of the second fins.

[0179] The seventh embodiment

[0180] Figure 20 is a schematic perspective view of a heat exchanger according to the seventh embodiment of the present invention; and

[0181] Figure 21 is Figure 20 a schematic front view of the first heat exchanger core of the heat exchanger shown.

[0182] The heat exchanger 100 according to the seventh embodiment of the present invention is different from the heat exchanger 100 according to the first embodiment of the present invention in that fins, sub-fins, a part of the fins or a part of the sub-fins are provided in a part of the second air resistance region 18, and is obtained by adjusting the height of the first heat exchanger core 1 and the peak distance of the second sub-fins 122 on the basis of the heat exchanger 100 of the sixth embodiment.

[0183] See Figures 20 to 21 , in the embodiments of the present invention, the first sub-fins 121 and the second sub-fins 122 of the first fins 12 are corrugated fins. The second sub-fins 122 of the first fins 12 include: a first sub-fin segment 1221 located in the first air resistance region 17 and a second sub-fin segment 1222 located in the second air resistance region 18. The first sub-fin segment 1221 and the second sub-fin segment 1222 can be separate fins and are connected to each other. In the first heat exchanger core extending direction C1 or in the third direction D3, the first sub-fin segment 1221 of the second sub-fins 122 of the first fins 12 has the same size as the first sub-fins 121 of the first fins 12. The peak distance of the first sub-fin segment 1221 of the second sub-fins 122 of the first fins 12 is greater than or equal to 50% of the peak distance of the second sub-fin segment 1222 and less than or equal to 90% of the peak distance of the second sub-fin segment 1222. The peak distance of the first sub-fin segment 1221 of the second sub-fins 122 of the first fins 12 can be equal to the peak distance of the first sub-fins 121 of the first fins 12.

[0184] For Figures 20 to 21 the first sub-fin segment 1221 and the second sub-fin segment 1222 of the second sub-fins 122 of the first fins 12 in Figures 15 to 17 the first sub-fins 121 of the first fins 12 in Figures 15 to 17 can be taken as the first sub-fins 121 of the first fins 12 in

[0185] The following description Figures 20 to 21 of the specific examples shown.

[0186] Figures 20 to 21 The heat exchanger 100 shown includes: a first heat exchanger core 1 and a second heat exchanger core 2. The first heat exchanger core 1 includes: a first main section 10 and a first header 13. The first main section 10 includes a plurality of first heat exchange tubes 11 and a plurality of first fins 12. The first fin 12 includes a first sub-fin 121 and a second sub-fin 122. The second sub-fin 122 includes a first sub-fin segment 1221 and a second sub-fin segment 1222. The first sub-fin segment 1221 and the second sub-fin segment 1222 can be independent fins or different parts of the same fin. For example, the second sub-fin 122 is formed by splicing the first sub-fin segment 1221 and the second sub-fin segment 1222 that are independent fins. The first heat exchange tubes 11 are arranged at intervals along the axial direction of the first header 13. At the same time, the first fins 12 are arranged at intervals between the first heat exchange tubes 11. The first heat exchange tubes 11 are connected to the first header 13. The second heat exchanger core 2 includes: a second main section 20 and a second header 23. The second main section 20 includes a plurality of second heat exchange tubes 21 and a plurality of second fins 22. The second heat exchange tubes 21 are arranged at intervals along the axial direction of the second header 23. At the same time, the second fins 22 are arranged at intervals between the second heat exchange tubes 21. The second heat exchange tubes 21 are connected to the second header 23.

[0187] The first heat exchanger core 1 and the second heat exchanger core 2 form a channel for the refrigerant to flow. For example, the first heat exchange tubes 11 of the first heat exchanger core 1 are connected to the second heat exchange tubes 21 of the second heat exchanger core 2 to form a flow channel. The first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 can also be respectively connected through an adapter to form a flow channel. Or the first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 can be connected through an adapter rather than being connected in a one-to-one correspondence. The first heat exchanger core 1 and the second heat exchanger core 2 are arranged in a front-back arrangement in the thickness direction of the heat exchanger 100. The first heat exchanger core 1 can be on the leeward side. The first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 can be arranged in parallel. The first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 can also form a certain angle.

[0188] The length of the first heat exchange tube 11 of the first heat exchanger core 1 is TL, the peak distance of the first sub-fin 121 is FP1, the length of the first sub-fin 121 is FL1, the number of the first sub-fins 121 is N1, the peak distance of the first sub-fin segment 1221 is FP2A, the length of the first sub-fin segment 1221 is FL2A, the number of the first sub-fin segments 1221 is N2A, the peak distance of the second sub-fin segment 1222 is FP2B, the length of the second sub-fin segment 1222 is FL2B, the number of the second sub-fin segments 1222 is N2B, the length of the second sub-fin 122 is FL2 (FL2 = FL2A + FL2B), and the number of the second sub-fins 122 is N2; the length of the second heat exchange tube 21 of the second heat exchanger core 2 is tl, the peak distance of the second fin 22 is fp, and the length of the second fin 22 is fl.

[0189] In the seventh embodiment, the heat transfer amount on the air side of the first heat exchanger core 1 is adjusted by reducing the heat transfer intensity of the first heat exchanger core 1, that is, the fin density, quantity, and length, and finally the condensate water amount of the heat exchanger 100 is reduced. The characteristics of the heat exchanger 100 in the seventh embodiment are as follows:

[0190] 30% * the height h of the second heat exchanger core 2 ≤ the height H of the first heat exchanger core 1 ≤ 90% * the height h of the second heat exchanger core 2;

[0191] When the outer diameter of the first header 13 is equal to the outer diameter of the second header 23, 30% * the length tl of the second heat exchange tube 21 ≤ the length TL of the first heat exchange tube 11 ≤ 90% * the length tl of the second heat exchange tube 21;

[0192] The structure of the first fin 12 is the same as that of the second fin 22;

[0193] 20% * the length fl of the second fin 22 ≤ the length FL1 of the first sub-fin 121 ≤ 80% * the length fl of the second fin 22;

[0194] 40% * the length fl of the second fin 22 ≤ the length FL2A of the first sub-fin segment 1221 + the length FL2B of the second sub-fin segment 1222 ≤ 90 * the length fl of the second fin 22;

[0195] 50% * the length FL1 of the first sub-fin 121 ≤ the length FL2A of the first sub-fin segment 1221 ≤ the length FL1 of the first sub-fin 121;

[0196] The peak distance FP2A of the first sub-fin segment 1221 = the peak distance FP1 of the first sub-fin 121;

[0197] 50% * Peak distance FP2B of the second sub-fin segment 1222 ≤ Peak distance FP2A of the first sub-fin segment 1221 ≤ 90% * Peak distance FP2B of the second sub-fin segment 1222;

[0198] The number N1 of the first sub-fins 121 + The number N2 of the second sub-fins 122 = The number n of the second fins 22;

[0199] 10% * The number n of the second fins 22 ≤ The number N2 of the second sub-fins 122 ≤ 80% * The number n of the second fins 22.

[0200] The eighth embodiment

[0201] Figure 22 Is a schematic perspective view of the heat exchanger 100 according to the eighth embodiment of the present invention; Figure 23 Is Figure 22 A schematic enlarged perspective view of the second sub-fin 121 of the first heat exchanger core 1 of the heat exchanger 100 shown; and Figure 24 Is Figure 22 A schematic enlarged top view of the second sub-fin 121 of the first heat exchanger core 1 of the heat exchanger 100 shown.

[0202] The main difference between the heat exchanger 100 according to the eighth embodiment of the present invention and the heat exchanger 100 according to the first embodiment of the present invention is that fins or sub-fins are provided in the second air resistance region 18.

[0203] See Figure 22 , in the embodiment of the present invention, the first main section 10 of the first heat exchanger core 1 further includes: a first fin 12 connected to the first heat exchange tube 11, the first fin 12 includes a first sub-fin 121 located in the first air resistance region 17, and a second sub-fin 122 different from the first sub-fin 121 located in the second air resistance region 18.

[0204] See Figure 22 , in the embodiment of the present invention, the first main section 10 of the first heat exchanger core 1 further includes a drainage insert 16 provided between the first sub-fin 121 and the second sub-fin 122 of the first fin 12.

[0205] For example, see Figures 23 to 24, the second sub-fin 122 of the first fin 12 includes a main body 1220 and a plurality of heat exchange tube slots 1223 formed in the main body 1220 of the second sub-fin 122. A plurality of first heat exchange tubes 11 are inserted into the heat exchange tube slots 1223 of the second sub-fin 122, and the first sub-fin 121 of the first fin 12 is a corrugated fin. The peak distance of the first sub-fin 121 is greater than or equal to 50% of the pitch of the second sub-fin 122 and less than or equal to the pitch of the second sub-fin 122. In addition, the second sub-fin 122 of the first fin 12 can also be any existing suitable pin fin.

[0206] The following description Figures 22 to 24 The specific examples shown.

[0207] Figure 22 The heat exchanger 100 shown includes: a first heat exchanger core 1 and a second heat exchanger core 2. The first heat exchanger core 1 includes: a first main section 10 and a first header 13. The first main section 10 includes a plurality of first heat exchange tubes 11, a plurality of first fins 12, and a drain insert 16. The first fin 12 includes a first sub-fin 121 located within the first air resistance region 17 and a second sub-fin 122 located within the second air resistance region 18. The first heat exchange tubes 11 are arranged at intervals along the axial direction of the first header 13. At the same time, the first sub-fins 121 are arranged at intervals between the first heat exchange tubes 11, and the first heat exchange tubes 11 are connected to the first header 13. The second heat exchanger core 2 includes: a second main section 20 and a second header 23. The second main section 20 includes a plurality of second heat exchange tubes 21 and a plurality of second fins 22. The second heat exchange tubes 21 are arranged at intervals along the axial direction of the second header 23. At the same time, the second fins 22 are arranged at intervals between the second heat exchange tubes 21, and the second heat exchange tubes 21 are connected to the second header 23.

[0208] The first heat exchanger core 1 and the second heat exchanger core 2 form a channel for the refrigerant to flow. For example, the first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 are connected to each other to form a flow channel. The first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 can also be respectively connected to each other through an adapter to form a flow channel, or the first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 can be connected to each other through an adapter rather than being connected in a one-to-one correspondence. The first heat exchanger core 1 and the second heat exchanger core 2 are arranged front and back in the thickness direction of the heat exchanger 100. The first heat exchanger core 1 can be on the leeward side. The first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 can be arranged in parallel, or the first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 can form a certain angle.

[0209] The length of the first heat exchange tube 11 of the first heat exchanger core 1 is TL, the peak pitch of the first sub-fin 121 is FP1, the length of the first sub-fin 121 is FL1, the dimension of all the second sub-fins 122 as a whole in the extending direction C1 of the first heat exchanger core is FL2, and the pitch of the second sub-fins 122 is FP2; the length of the second heat exchange tube 21 of the second heat exchanger core 2 is tl, the peak pitch of the second fin 22 is fp, and the length of the second fin 22 is fl.

[0210] In the eighth embodiment, the heat transfer amount on the air side of the first heat exchanger core 1 is adjusted by reducing the heat transfer intensity (i.e., fin density) of the first heat exchanger core 1, and finally the condensation water amount of the heat exchanger 100 is reduced. The heat exchanger 100 of the eighth embodiment has the following characteristics:

[0211] The height H of the first heat exchanger core 1 = the height h of the second heat exchanger core 2;

[0212] When the outer diameter of the first header 13 is equal to the outer diameter of the second header 23, the length TL of the first heat exchange tube 11 = the length tl of the second heat exchange tube 21;

[0213] The structure of the first sub-fin 121 is the same as the structure of the second fin 22;

[0214] The first sub-fin 121 and the second fin 22 adopt corrugated fins, the second sub-fin 122 adopts inserted fins, the second sub-fin 122 includes a main body 1210 and a plurality of heat exchange tube slots 1211 formed in the main body 1210 of the second sub-fin 122, a plurality of first heat exchange tubes 11 are inserted into the heat exchange tube slots 1211 of the second sub-fin 122, the second sub-fin 122 can have a plurality of structures for enhancing heat transfer and heat conduction with flow disturbance, and a drainage insert 16 is arranged between the first sub-fin 121 and the second sub-fin 122 for discharging the condensation water generated by the first sub-fin 121;

[0215] 30% * the length fl of the second fin 22 ≤ the length FL1 of the first sub-fin 121 ≤ 90% * the length fl of the second fin 22;

[0216] At the same air velocity, the air resistance of the first sub-fin 121 is greater than the air resistance of the second sub-fin 122. For example, 50% * the pitch FP2 of the second sub-fin 122 ≤ the peak pitch FP1 of the first sub-fin 121 ≤ the pitch FP2 of the second sub-fin 122;

[0217] The second sub-fin 122 can form a certain angle with the first heat exchange tube 11 (such as a flat tube).

[0218] The ninth embodiment

[0219] Figure 25 Is a schematic perspective view of a heat exchanger according to the ninth embodiment of the present invention.Figure 25 The heat exchanger 100 shown is obtained by adjusting the height of the first heat exchanger core 1 on the basis of the heat exchanger 100 of the eighth embodiment. The features of the heat exchanger 100 of the ninth embodiment are as follows:

[0220] 30% * the height h of the second heat exchanger core 2 ≤ the height H of the first heat exchanger core 1 ≤ 90% * the height h of the second heat exchanger core 2;

[0221] When the outer diameter of the first header 13 is equal to the outer diameter of the second header 23, 30% * the length tl of the second heat exchange tube 21 ≤ the length TL of the first heat exchange tube 11 ≤ 90% * the length tl of the second heat exchange tube 21;

[0222] The structure of the first sub-fin 121 is the same as the structure of the second fin 22;

[0223] 20% * the length fl of the second fin 22 ≤ the length FL1 of the first sub-fin 121 ≤ 80% * the length fl of the second fin 22;

[0224] 40% * the length fl of the second fin 22 ≤ the length FL1 of the first sub-fin 121 + the size FL2 of the second sub-fin 122 ≤ 90% * the length f1 of the second fin 22;

[0225] The first sub-fin 121 and the second fin 22 adopt corrugated fins, see Figures 23 to 24 , the second sub-fin 122 adopts inserted fins. The second sub-fin 122 includes a main body 1220 and a plurality of heat exchange tube slots 1223 formed in the main body 1220 of the second sub-fin 122. A plurality of first heat exchange tubes 11 are inserted into the heat exchange tube slots 1223 of the second sub-fin 122. The second sub-fin 122 can have a plurality of structures for enhancing heat transfer and heat exchange with turbulence, such as a plurality of openings 1225 formed in the main body 1220 of the second sub-fin 122. The drainage insert 16 is located between the first sub-fin 121 and the second sub-fin 122 for discharging the condensed water generated by the first sub-fin 121;

[0226] At the same wind speed, the wind resistance of the first sub-fin 121 is greater than the wind resistance of the second sub-fin 122. For example, 50% * the pitch FP2 of the second sub-fin 122 ≤ the peak pitch FP1 of the first sub-fin 121 ≤ the pitch FP2 of the second sub-fin 122.

[0227] Tenth Embodiment

[0228] Figure 26 is a schematic perspective view of the heat exchanger 100 according to the tenth embodiment of the present invention; Figure 27 is Figure 26 a schematic front view of the first heat exchanger core 1 of the heat exchanger 100 shown; and Figures 28 to 32Schematic front view of the first heat exchanger core 1 of the heat exchanger 100 according to the tenth embodiment of the present invention.

[0229] The main difference between the heat exchanger 100 according to the tenth embodiment of the present invention and the heat exchanger 100 according to the first embodiment of the present invention is that at least some of the first heat exchange tubes 11 have bent portions within the second air resistance region 18.

[0230] See Figures 26 to 32 , in the embodiments of the present invention, the pitch TS2 of the ends 14 of at least some of the first heat exchange tubes 11 connected to the first header 13 is smaller than the pitch TS1 of the first heat exchange tubes 11 in the first air resistance region 17. For example, the pitch TS2 of the ends 14 of the first heat exchange tubes 11 connected to the first header 13 is smaller than the pitch TS1 of the first heat exchange tubes 11 in the first air resistance region 17. For example, the first heat exchange tubes 11 may be flat tubes, and the pitch TS2 of the ends 14 of at least some of the first heat exchange tubes 11 connected to the first header 13 is greater than or equal to the thickness TD of the first heat exchange tubes 11. See Figures 30 to 32 , the ends 14 of the first heat exchange tubes 11 include a plurality of end groups 15, and the pitch TS2 of the ends 14 in each end group 15 is smaller than the pitch TS1 of the first heat exchange tubes 11 in the first air resistance region 17. The pitch between adjacent end groups 15 is greater than the pitch TS2 of the ends 14 in each end group 15. For example, the first heat exchange tubes 11 are flat tubes, and the pitch TS2 of the ends 14 in each end group 15 is greater than or equal to the thickness TD of the first heat exchange tubes 11. The first header 13 may include a plurality of sub - headers 13A, 13B, and each of the plurality of sub - headers 13A, 13B is connected to and in fluid communication with the ends 14 of one of the plurality of end groups 15 of the first heat exchange tubes 11.

[0231] The following describes Figures 26 to 32 the specific example shown.

[0232] Figures 26 to 32The heat exchanger 100 shown includes: a first heat exchanger core 1 and a second heat exchanger core 2. The first heat exchanger core 1 includes: a first main section 10 and a first header 13. The first main section 10 includes a plurality of first heat exchange tubes 11 and a plurality of first fins 12. The first heat exchange tube 11 includes: a first heat exchange tube section 111 located within a first air resistance region 17, and a second heat exchange tube section 112 and a third heat exchange tube section 113 located within a second air resistance region 18. The third heat exchange tube section 113 may serve as or may include an end portion 14 of the first heat exchange tube 11. By bending, the second heat exchange tube section 112 forms a certain angle with the first heat exchange tube section 111 and the third heat exchange tube section 113 respectively. The first heat exchange tube section 111 and the third heat exchange tube section 113 may be parallel to the extending direction C1 of the first heat exchanger core, while the second heat exchange tube section 112 is inclined with respect to the extending direction C1 of the first heat exchanger core. The first heat exchange tube section 111, the second heat exchange tube section 112, and the third heat exchange tube section 113 may be within a first plane where the first main section of the first heat exchanger core is located. The first heat exchange tubes 11 are arranged at intervals along the axial direction of the first header 13. At the same time, the first fins 12 are arranged at intervals between the first heat exchange tubes 11, and the first heat exchange tubes 11 are connected to the first header 13. The second heat exchanger core 2 includes: a second main section 20 and a second header 23. The second main section 20 includes a plurality of second heat exchange tubes 21 and a plurality of second fins 22. The second heat exchange tubes 21 are arranged at intervals along the axial direction of the second header 23. At the same time, the second fins 22 are arranged at intervals between the second heat exchange tubes 21, and the second heat exchange tubes 21 are connected to the second header 23. The heat exchange tubes may be flat tubes.

[0233] The first heat exchanger core 1 and the second heat exchanger core 2 form a channel for the refrigerant to flow. For example, the first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 are connected to each other to form a flow channel. The first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 may also be respectively connected to each other through an adapter to form a flow channel, or the first heat exchange tubes 11 of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 may be connected to each other through an adapter rather than being connected in a one-to-one correspondence. The first heat exchanger core 1 and the second heat exchanger core 2 are arranged in a front-back arrangement in the thickness direction of the heat exchanger 100. The first heat exchanger core 1 may be on the leeward side. The first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 may be arranged in parallel, or the first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 may form a certain angle.

[0234] The dimension of the first heat exchange tube 11 of the first heat exchanger core 1 in the first heat exchanger core extension direction C1 or the third direction D3 is TL, the thickness of the first heat exchange tube 11 is TD, the peak distance of the first fin 12 is FP, the length of the first fin 12 is FL, the length of the first heat exchange tube section 111 is TL1, the distance between the first heat exchange tube sections 111 is TS1, the dimension of the second heat exchange tube section 112 of the first heat exchanger core 1 in the first heat exchanger core extension direction C1 or the third direction D3 is TL2, the length of the third heat exchange tube section 113 is TL3, the distance between the third heat exchange tube sections 113 is TS2, the length of the second heat exchange tube 21 of the second heat exchanger core 2 is tl, the peak distance of the second fin 22 is fp, and the length of the second fin 22 is f1.

[0235] In the tenth embodiment, the heat transfer amount on the air side of the first heat exchanger core 1 is adjusted by reducing the heat transfer area of the first heat exchanger core 1, and finally the condensation water amount of the heat exchanger 100 is reduced.

[0236] The heat exchanger 100 of the tenth embodiment has the following characteristics:

[0237] The height H of the first heat exchanger core 1 = the height h of the second heat exchanger core 2;

[0238] When the outer diameter of the first header 13 is equal to the outer diameter of the second header 23, the dimension TL of the first heat exchange tube 11 = the length tl of the second heat exchange tube 21;

[0239] The dimension TL of the first heat exchange tube 11 = the length TL1 of the first heat exchange tube section 111 + the dimension TL2 of the second heat exchange tube section 112 + the length TL3 of the third heat exchange tube section 113;

[0240] The structure of the first fin 12 is the same as the structure of the second fin 22;

[0241] 50 * the length TL1 of the first heat exchange tube section 111 ≤ the length FL of the first fin 12 ≤ the length TL1 of the first heat exchange tube section 111;

[0242] 30% * the dimension TL of the first heat exchange tube 11 ≤ the length TL1 of the first heat exchange tube section 111 ≤ 90% * the dimension TL of the first heat exchange tube 11;

[0243] The thickness TD of the first heat exchange tube 11 ≤ the distance TS2 between the third heat exchange tube sections 113 < the distance TS1 between the first heat exchange tube sections 111;

[0244] 20 * the length of the second header 23 ≤ the length of the first header 13 ≤ the length of the second header 23;

[0245] The heat exchanger 100 of the variant of the tenth embodiment is obtained by reducing the height H of the first heat exchanger core 1, and the heat exchanger 100 of this variant has the following characteristics:

[0246] 30% * The height h of the second heat exchanger core 2 ≤ the height H of the first heat exchanger core 1 ≤ 90% * the height h of the second heat exchanger core 2;

[0247] When the outer diameter of the first header 13 is equal to the outer diameter of the second header 23, 30% * the length tl of the second heat exchange tube 21 ≤ the dimension TL of the first heat exchange tube 11 ≤ 90% * the length tl of the second heat exchange tube 21;

[0248] The dimension TL of the first heat exchange tube 11 = the length TL1 of the first heat exchange tube section + the dimension TL2 of the second heat exchange tube section + the length TL3 of the third heat exchange tube section;

[0249] The structure of the first fin 12 is the same as the structure of the second fin 22;

[0250] 50 * the length TL1 of the first heat exchange tube section 111 ≤ the length FL of the first fin 12 ≤ the length TL1 of the first heat exchange tube section 111;

[0251] 30% * the dimension TL of the first heat exchange tube 11 ≤ the length TL1 of the first heat exchange tube section 111 ≤ 90% * the dimension TL of the first heat exchange tube 11;

[0252] The thickness TD of the first heat exchange tube 11 ≤ the spacing TS2 of the third heat exchange tube section 113 < the spacing TS1 of the first heat exchange tube section 111;

[0253] 20 * the length of the second header 23 ≤ the length of the first header 13 ≤ the length of the second header 23.

[0254] The second heat exchange tube section 112 of the heat exchanger 100 can adopt the following structure.

[0255] As Figure 26 、 27 shown, relative to the plane perpendicular to the second direction D2 and located in the middle of the first header 13, the second heat exchange tube sections 112 on each side of the plane extend obliquely towards the plane in the direction towards the first header 13, and the second heat exchange tube section 112 of a first heat exchange tube 11 in the middle of the first header 13 can extend parallel to the plane. The first heat exchanger core 1 may further include a refrigerant distribution device 131 disposed in the first header 13, such as a fluid distribution pipe or a fluid distributor.

[0256] As Figure 28 and Figure 29As shown, relative to a plane perpendicular to the second direction D2 and located at the end of the first header 13, the second heat exchange tube section 112 extends obliquely towards this plane in the direction towards the first header 13. The second heat exchange tube section 112 of a first heat exchange tube 11 at the end of the first header 13 can extend parallel to this plane. The first heat exchanger core 1 may further include a refrigerant distribution device 131 disposed within the first header 13, such as a fluid distribution tube or a fluid distributor.

[0257] As Figures 30 to 32 shown, relative to a plane perpendicular to the second direction D2 and located in the middle of the first header 13, the second heat exchange tube sections 112 on each side of this plane extend obliquely away from this plane in the direction towards the first header 13. The second heat exchange tube sections 112 of two first heat exchange tubes 11 respectively located at the two ends of the first header 13 can extend parallel to this plane. In Figure 30 the heat exchanger 100 shown, the first heat exchanger core 1 may further include a refrigerant distribution device 131 disposed within the first header 13, such as a fluid distribution tube or a fluid distributor. In Figure 31 the heat exchanger 100 shown, the first header 13 includes a partition 135 disposed inside the first header 13. The first header 13 is divided into two sub - headers 13A and 13B. The first heat exchanger core 1 may further include: refrigerant distribution devices 131A and 131B (such as fluid distribution tubes or fluid distributors) respectively disposed within the two sub - headers 13A and 13B; and refrigerant inlet connection pipes 132A and 132B respectively disposed on the two sub - headers 13A and 13B and respectively connected to the refrigerant distribution devices 131A and 131B. In Figure 32 the heat exchanger 100 shown, the first heat exchanger core 1 may further include: a refrigerant distribution device 131 disposed within the first header 13, such as a fluid distribution tube or a fluid distributor; and a refrigerant inlet connection pipe 132 connected to the refrigerant distribution device 131 at the middle of the first header 13.

[0258] The Eleventh Embodiment

[0259] Figure 33 is a schematic perspective view of a heat exchanger 100 according to the eleventh embodiment of the present invention; and Figures 34 to 37 is a schematic front view of a part of the first heat exchanger core 1 of the heat exchanger 100 according to the eleventh embodiment of the present invention.

[0260] The main difference between the heat exchanger 100 according to the eleventh embodiment of the present invention and the heat exchanger 100 according to the first embodiment of the present invention is that the first heat exchanger core 1 includes a plurality of sub - heat exchanger cores.

[0261] SeeFigures 33 to 37 According to the eleventh embodiment of the present invention, the heat exchanger 100 includes: a first heat exchanger core 1 and a second heat exchanger core 2. The first heat exchanger core 1 includes a plurality of sub-heat exchanger cores. For example, the first heat exchanger core 1 includes two sub-heat exchanger cores, namely, a first sub-heat exchanger core 1A and a second sub-heat exchanger core 1B. For example, the first heat exchanger core 1 is divided into a plurality of core segments arranged in the second direction D2 by a plane perpendicular to the second direction D2, and the first heat exchange tubes 11 of each core segment are connected and in fluid communication with one of the plurality of sub-header tubes of the first header 13, thereby forming a plurality of sub-heat exchanger cores. For the inserted fins and drain inserts of the above embodiments, in addition to adopting the structures of the above embodiments, each core segment may also have separate inserted fins and drain inserts. The parameters of each core segment may be the same as the corresponding parameters of other core segments, and the parameters of each core segment may also be different from the corresponding parameters of other core segments. The parameters of the core segment may include the type and size of the first fins within the core segment, the size of the core segment in the third direction D3, the angle between the portion of the first main segment within the core segment and the second main segment 20 of the second heat exchanger core 2, the sizes in the third direction D3 of the first air resistance region and the second air resistance region of the first main segment within the core segment, etc. For example, the plurality of sub-heat exchanger cores may be in a plane and arranged in the second direction D2. The first connection segment 19 of the first heat exchanger core 1 and the second connection segment 29 of the second heat exchanger core 2 of the heat exchanger 100 of this embodiment may be the same as the first connection segment 19 of the first heat exchanger core 1 and the second connection segment 29 of the second heat exchanger core 2 of the heat exchanger 100 in the above embodiments.

[0262] The first sub-heat exchanger core 1A of the first heat exchanger core 1 includes: a first main segment 10A, the first main segment 10A includes a plurality of first heat exchange tubes 11A arranged in the second direction D2 and first fins 12A connected to the first heat exchange tubes 11A; a first connection segment 19A connected to the first main segment 10A; and a first sub-header tube 13A of the first header 13 that is connected to and in fluid communication with the plurality of first heat exchange tubes 11A on the side of the first main segment 10A of the first sub-heat exchanger core 1A opposite to the first connection segment 19A.

[0263] The second sub-heat exchanger core 1B of the first heat exchanger core] includes: a first main segment 10B, the first main segment 10B includes a plurality of first heat exchange tubes 11B arranged in the second direction D2 and first fins 12B connected to the first heat exchange tubes 11B; a first connection segment 19B connected to the first main segment 10B; and a second sub-header tube 13B of the first header 13 that is connected to and in fluid communication with the plurality of first heat exchange tubes 11B on the side of the first main segment 10B of the second sub-heat exchanger core 1B opposite to the first connection segment 19B.

[0264] The first connecting section 19A and the first connecting section 19B form the first connecting section 19. The first main section 10A and the first main section 10B form the first main section 10. The plurality of first heat exchange tubes 11A and the plurality of second heat exchange tubes 11B form the plurality of first heat exchange tubes 11. The first fins 12A and the first fins 12B form the first fins 12.

[0265] The second heat exchanger core 2 includes: a second main section 20, the second main section 20 of the second heat exchanger core 2 includes: a plurality of second heat exchange tubes 21 arranged in the second direction D2; a second connecting section 29 connected to the second main section 20; and a second header 23 connected to and in fluid communication with the plurality of second heat exchange tubes 21 on a side of the second main section 20 of the second heat exchanger core 2 opposite to the second connecting section 29. The plurality of first heat exchange tubes 11 of the first main section 10 of the first heat exchanger core 1 and the plurality of second heat exchange tubes 21 of the second main section 20 of the second heat exchanger core 2 are connected to each other and in fluid communication through the first connecting section 19 of the first heat exchanger core 1 and the second connecting section 29 of the second heat exchanger core 2.

[0266] The first main section 10A of the first sub - heat exchanger core 1A includes a first wind resistance area 17A and a second wind resistance area 18A arranged in the third direction D3 or in the first heat exchanger core extending direction C1. The second wind resistance area 18A is adjacent to the first sub - header 13A of the first header 13, and the wind resistance of the second wind resistance area 18A is less than the wind resistance of the first wind resistance area 17A.

[0267] The first main section 10B of the second sub - heat exchanger core 1B includes a first wind resistance area 17B and a second wind resistance area 18B arranged in the third direction D3 or in the first heat exchanger core extending direction C1. The second wind resistance area 18B is adjacent to the second sub - header 13B of the first header 13, and the wind resistance of the second wind resistance area 18B is less than the wind resistance of the first wind resistance area 17B.

[0268] The first wind resistance area 17A of the first main section 10A of the first sub - heat exchanger core 1A and the first wind resistance area 17B of the first main section 10B of the second sub - heat exchanger core 1B form the first wind resistance area 17, and the second wind resistance area 18A of the first main section 10A of the first sub - heat exchanger core 1A and the second wind resistance area 18B of the first main section 10B of the second sub - heat exchanger core 1B form the second wind resistance area 18.

[0269] The first heat exchange tube 11A includes: a first heat exchange tube section 111A located within the first air resistance area 17A, and a second heat exchange tube section 112A and a third heat exchange tube section 113A located within the second air resistance area 18A. The third heat exchange tube section 113A can serve as the end of the first heat exchange tube 11A or can include the end of the first heat exchange tube 11A. Through bending, the second heat exchange tube section 112A forms a certain angle with the first heat exchange tube section 111A and the third heat exchange tube section 113A respectively. The first heat exchange tube section 111A and the third heat exchange tube section 113A can be parallel to the extension direction C1 of the first heat exchanger core, while the second heat exchange tube section 112A is inclined relative to the extension direction C1 of the first heat exchanger core. The first heat exchange tube section 111A, the second heat exchange tube section 112A, and the third heat exchange tube section 113A can be within the first plane where the first main section 10 of the first heat exchanger core 1 is located or within the plane where the first main section 10A of the first sub-heat exchanger core 1A is located.

[0270] The first heat exchange tube 11B includes: a first heat exchange tube section 111B located within the first air resistance area 17B, and a second heat exchange tube section 112B and a third heat exchange tube section 113B located within the second air resistance area 18B. The third heat exchange tube section 113B can serve as the end of the first heat exchange tube 11B or can include the end of the first heat exchange tube 11B. Through bending, the second heat exchange tube section 112B forms a certain angle with the first heat exchange tube section 111B and the third heat exchange tube section 113B respectively. The first heat exchange tube section 111B and the third heat exchange tube section 113B can be parallel to the extension direction C1 of the first heat exchanger core, while the second heat exchange tube section 112B is inclined relative to the extension direction C1 of the first heat exchanger core. The first heat exchange tube section 111B, the second heat exchange tube section 112B, and the third heat exchange tube section 113B can be within the first plane where the first main section 10 of the first heat exchanger core 1 is located or within the plane where the first main section 10B of the second sub-heat exchanger core 1B is located.

[0271] In the embodiment shown in the figure, the first heat exchange tube 11A includes a first heat exchange tube section 111A, a second heat exchange tube section 112A, and a third heat exchange tube section 113A. The second heat exchange tube section 112A forms a certain angle with the first heat exchange tube section 111A and the third heat exchange tube section 113A respectively through bending. The first heat exchange tubes 11A are arranged at intervals along the axial direction of the first sub-header 13A. At the same time, the first fins 12A are arranged at intervals between the first heat exchange tubes 11A, and the first heat exchange tubes 11A are connected to the first sub-header 13A. The first heat exchange tube 11B includes a first heat exchange tube section 111B, a second heat exchange tube section 112B, and a third heat exchange tube section 113B. The second heat exchange tube section 112B forms a certain angle with the first heat exchange tube section 111B and the third heat exchange tube section 113B respectively through bending. The first heat exchange tubes 11B are arranged at intervals along the axial direction of the second sub-header 13B. At the same time, the first fins 12B are arranged at intervals between the first heat exchange tubes 11B, and the first heat exchange tubes 11B are connected to the first sub-header 13B. The second heat exchanger core 2 includes a second main section 20 and a second header 23. The second main section 20 includes a plurality of second heat exchange tubes 21 and a plurality of second fins 22. The second heat exchange tubes 21 are arranged at intervals along the axial direction of the second header 23. At the same time, the second fins 22 are arranged at intervals between the second heat exchange tubes 21, and the second heat exchange tubes 21 are connected to the second header 23. The heat exchange tubes can be flat tubes.

[0272] The first heat exchanger core 1 and the second heat exchanger core 2 form a channel for the refrigerant to flow. For example, the first heat exchange tubes 11A and 11B of the first heat exchanger core 1 are connected to the second heat exchange tubes 21 of the second heat exchanger core 2 to form a flow channel. The first heat exchange tubes 11A and 11B of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 can also be respectively connected through an adapter to form a flow channel. Or the first heat exchange tubes 11A and 11B of the first heat exchanger core 1 and the second heat exchange tubes 21 of the second heat exchanger core 2 can be connected through an adapter rather than being connected in a one-to-one correspondence. The first heat exchanger core 1 and the second heat exchanger core 2 are arranged front and back in the thickness direction of the heat exchanger 100. The first heat exchanger core 1 can be on the leeward side. The first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 can be arranged in parallel, or the first main section 10 of the first heat exchanger core 1 and the second main section 20 of the second heat exchanger core 2 can form a certain angle.

[0273] The dimension of the first heat exchange tube 11A of the first sub-heat exchanger core 1A in the first heat exchanger core extension direction C1 or the third direction D3 is TLA, the thickness of the first heat exchange tube 11A is TDA, the peak distance of the first fin 12A is FPA, the length of the first fin 12A is FLA, the length of the first heat exchange tube section 111A is TL1A, the spacing of the first heat exchange tube section 111A is TS1A, the dimension of the second heat exchange tube section 112A in the first heat exchanger core extension direction C1 or the third direction D3 is TL2A, the length of the third heat exchange tube section 113A is TL3A, and the spacing of the third heat exchange tube section 113B is TS2A;

[0274] The dimension of the first heat exchange tube 11B of the second sub-heat exchanger core 1B in the first heat exchanger core extension direction C1 or the third direction D3 is TLB, the thickness of the first heat exchange tube 11B is TDB, the peak distance of the first fin 12B is FPB, the length of the first fin 12B is FLB, the length of the first heat exchange tube section 111B is TL1B, the spacing of the first heat exchange tube section 111B is TS1B, the dimension of the second heat exchange tube section 112B in the first heat exchanger core extension direction C1 or the third direction D3 is TL2B, the length of the third heat exchange tube section 113B is TL3B, and the spacing of the third heat exchange tube section 113B is TS2B;

[0275] The first heat exchange tube section 111A, the second heat exchange tube section 112A, and the third heat exchange tube section 113A of the first sub-heat exchanger core 1A and the first heat exchange tube section 111B, the second heat exchange tube section 112B, and the third heat exchange tube section 113B of the second sub-heat exchanger core 1B respectively constitute the first heat exchange tube section, the second heat exchange tube section, and the third heat exchange tube section of the heat exchanger 100.

[0276] The length of the second heat exchange tube 21 of the second heat exchanger core 2 is tl, the peak distance of the second fin 22 is fp, and the length of the second fin 22 is fl.

[0277] In the eleventh embodiment, the heat transfer amount on the air side of the first heat exchanger core 1 is adjusted by reducing the heat transfer area of the first heat exchanger core 1, and finally the condensate water amount of the heat exchanger 100 is reduced.

[0278] The heat exchanger 100 of the eleventh embodiment has the following characteristics:

[0279] The height H of the first heat exchanger core 1 = the height h of the second heat exchanger core 2;

[0280] When the outer diameters of the first sub-header 13A and the second sub-header 13B of the first header 13 (the outer diameters of the first sub-header 13A and the second sub-header 13B are the same) are equal to the outer diameter of the second header 23, the dimension TL of the first heat exchange tube 11 = the length tl of the second heat exchange tube 21;

[0281] The dimensions of the first heat exchange tube section 111A, the second heat exchange tube section 112A, and the third heat exchange tube section 113A of the first sub-heat exchanger core 1A are the same as those of the first heat exchange tube section 111B, the second heat exchange tube section 112B, and the third heat exchange tube section 113B of the second sub-heat exchanger core 1B, respectively;

[0282] The dimension TL of the first heat exchange tube 11 = the length TL1 of the first heat exchange tube section + the dimension TL2 of the second heat exchange tube section + the length TL3 of the third heat exchange tube section;

[0283] The structure of the first fin 12 is the same as that of the second fin 22;

[0284] 50 * the length TL1 of the first heat exchange tube section ≤ the length FL of the first fin 12 ≤ the length TL1 of the first heat exchange tube section;

[0285] 30% * the dimension TL of the first heat exchange tube 11 ≤ the length TL1 of the first heat exchange tube section ≤ 90% * the dimension TL of the first heat exchange tube 11;

[0286] The thickness TD of the first heat exchange tube ≤ the spacing TS2 of the third heat exchange tube section < the spacing TS1 of the first heat exchange tube section;

[0287] The first header includes a first sub-header 13A and a second sub-header 13B, where 20 * the length of the second header 23 ≤ the length of the first sub-header 13A ≤ 80 * the length of the second header 23, and 20 * the length of the second header 23 ≤ the length of the second sub-header 13B ≤ 80 * the length of the second header 23;

[0288] A heat exchanger 100 of a variant of the eleventh embodiment is obtained by adjusting the height H of the first sub-heat exchanger core 1A and the second sub-heat exchanger core 1B of the first heat exchanger core 1. The characteristics of the heat exchanger 100 of this variant are as follows:

[0289] 30% * the height h of the second heat exchanger core 2 ≤ the height HA of the first sub-heat exchanger core 1A ≤ the height h of the second heat exchanger core 2;

[0290] 30% * the height h of the second heat exchanger core 2 ≤ the height HB of the second sub-heat exchanger core 1B ≤ the height h of the second heat exchanger core 2;

[0291] When the outer diameter of the first sub-header 13A is equal to the outer diameter of the second header 23, 30% * the length tl of the second heat exchange tube 21 ≤ the dimension TLA of the first heat exchange tube 11A ≤ 90% * the length tl of the second heat exchange tube 21;

[0292] When the outer diameter of the second subset manifold 13B is equal to the outer diameter of the second manifold 23, 30% * the length tl of the second heat exchange tube 21 ≤ the dimension TLB of the first heat exchange tube 11B ≤ 90% * the length tl of the second heat exchange tube 21;

[0293] The dimension TLA of the first heat exchange tube 11A = the length TL1A of the first heat exchange tube section 111A + the dimension TL2A of the second heat exchange tube section 112A + the length TL3A of the third heat exchange tube section 113A;

[0294] The dimension TLB of the first heat exchange tube 11B = the length TL1B of the first heat exchange tube section 111B + the dimension TL2B of the second heat exchange tube section 112B + the length TL3B of the third heat exchange tube section 113B;

[0295] The structures of the first fin 12A, the first fin 12B, and the second fin 22 are the same;

[0296] 50 * the length TL1A of the first heat exchange tube section 111A ≤ the length FLA of the first fin 12A ≤ the length TL1A of the first heat exchange tube section 111A;

[0297] 50 * the length TL1B of the first heat exchange tube section 111B ≤ the length FLB of the first fin 12B ≤ the length TL1B of the first heat exchange tube section 111B;

[0298] 30% * the dimension TLA of the first heat exchange tube 11A ≤ the length TL1A of the first heat exchange tube section 111A ≤ 90% * the dimension TLA of the first heat exchange tube 11A;

[0299] 30% * the dimension TLB of the first heat exchange tube 11B ≤ the length TL1B of the first heat exchange tube section 111B ≤ 90% * the dimension TLB of the first heat exchange tube 11B;

[0300] The thickness TDA of the first heat exchange tube 11A ≤ the spacing TS2A of the third heat exchange tube section 113A < the spacing TS1A of the first heat exchange tube section 111A;

[0301] The thickness TDB of the first heat exchange tube 11B ≤ the spacing TS2B of the third heat exchange tube section 113B < the spacing TS1B of the first heat exchange tube section 111B;

[0302] 20 * the length of the second manifold 23 ≤ the length of the first subset manifold 13A ≤ the length of the second manifold 23;

[0303] 20 * the length of the second manifold 23 ≤ the length of the first subset manifold 13B ≤ the length of the second manifold 23.

[0304] The second heat exchange tube section 112 of the heat exchanger 100 can adopt the following structure.

[0305] As Figures 33 to 37 shown, for the first sub-heat exchanger core 1A, with respect to a plane perpendicular to the second direction D2 and located in the middle of the first sub-header 13A, the second heat exchange tube segments 112A on each side of the plane extend obliquely towards the plane in the direction towards the first sub-header 13A, and the second heat exchange tube segment 112A of a first heat exchange tube 11A in the middle of the first sub-header 13A may extend parallel to the plane. The first sub-heat exchanger core 1A may further include a refrigerant distribution device 131A disposed within the first sub-header 13A, such as a fluid distribution tube or a fluid distributor. As Figures 33 to 37 shown, for the second sub-heat exchanger core 1B, with respect to a plane perpendicular to the second direction D2 and located in the middle of the second sub-header 13B, the second heat exchange tube segments 112B on each side of the plane extend obliquely towards the plane in the direction towards the second sub-header 13B, and the second heat exchange tube segment 112B of a first heat exchange tube 11B in the middle of the second sub-header 13B may extend parallel to the plane. The second sub-heat exchanger core 1B may further include a refrigerant distribution device 131B disposed within the second sub-header 13B, such as a fluid distribution tube or a fluid distributor.

[0306] See Figures 33 to 37 and see Figures 28 to 29 , for the first sub-heat exchanger core 1A, with respect to a plane perpendicular to the second direction D2 and located at the end of the first sub-header 13A away from or close to the second sub-heat exchanger core 1B, the second heat exchange tube segments 112A extend obliquely towards the plane in the direction towards the first sub-header 13A, and the second heat exchange tube segment 112A of a first heat exchange tube 11A at the end of the first sub-header 13A may extend parallel to the plane. The first sub-heat exchanger core 1A may further include a refrigerant distribution device 131A disposed within the first sub-header 13A, such as a fluid distribution tube or a fluid distributor. See Figures 33 to 37 and see Figures 28 to 29 , for the second sub-heat exchanger core 1B, with respect to a plane perpendicular to the second direction D2 and located at the end of the second sub-header 13B away from or close to the first sub-heat exchanger core 1A, the second heat exchange tube segments 112B extend obliquely towards the plane in the direction towards the second sub-header 13B, and the second heat exchange tube segment 112B of a first heat exchange tube 11B at the end of the second sub-header 13B may extend parallel to the plane. The second sub-heat exchanger core 1B may further include a refrigerant distribution device 131B disposed within the second sub-header 13B, such as a fluid distribution tube or a fluid distributor.

[0307] See Figures 33 to 37 and see Figures 30 to 32, for the first sub-heat exchanger core 1A, with respect to a plane perpendicular to the second direction D2 and located in the middle of the first sub-header 13A, the second heat exchange tube segments 112A on each side of this plane extend obliquely away from this plane in the direction towards the first sub-header 13A. The second heat exchange tube segments 112A of the two first heat exchange tubes 11A respectively located at the two ends of the first sub-header 13A may extend parallel to this plane. See Figures 33 to 37 and see Figures 30 to 32 , for the second sub-heat exchanger core 1B, with respect to a plane perpendicular to the second direction D2 and located in the middle of the second sub-header 13B, the second heat exchange tube segments 112B on each side of this plane extend obliquely away from this plane in the direction towards the second sub-header 13B. The second heat exchange tube segments 112B of the two first heat exchange tubes 11B respectively located at the two ends of the second sub-header 13B may extend parallel to this plane.

[0308] In Figure 34 the illustrated embodiment, the first sub-heat exchanger core 1A further includes a refrigerant distribution device 131A disposed within the first sub-header 13A, such as a fluid distribution pipe or a fluid distributor, while the second sub-heat exchanger core 1B further includes a refrigerant distribution device 131B disposed within the second sub-header 13B, such as a fluid distribution pipe or a fluid distributor. In Figure 35 , 36 the illustrated embodiment, the first sub-heat exchanger core 1A further includes a refrigerant distribution device 131A disposed within the first sub-header 13A, such as a fluid distribution pipe or a fluid distributor, while the second sub-heat exchanger core 1B further includes a refrigerant distribution device 131B disposed within the second sub-header 13B, such as a fluid distribution pipe or a fluid distributor. And the refrigerant distribution device 131A and the refrigerant distribution device 131B are connected together by a connecting pipe between the first sub-header 13A and the second sub-header 13B. In Figure 35 the illustrated embodiment, the common inlet of the refrigerant distribution device 131A and the refrigerant distribution device 131B, i.e., the refrigerant inlet pipe 132, is disposed between the first sub-header 13A and the second sub-header 13B, while in Figure 36 the illustrated embodiment, the common inlet of the refrigerant distribution device 131A and the refrigerant distribution device 131B, the refrigerant inlet pipe 132, is disposed on the side of the first sub-header 13A away from the second sub-header 13B. In Figure 37 the illustrated embodiment, the first sub-heat exchanger core 1A and the second sub-heat exchanger core 1B do not have a refrigerant distribution device. The first sub-heat exchanger core 1A further includes a refrigerant inlet pipe 132A disposed on the first sub-header 13A, while the second sub-heat exchanger core 1B further includes a refrigerant inlet pipe 132B disposed on the second sub-header 13B.

[0309] The air-conditioning system according to an embodiment of the present invention includes the heat exchanger 100 described above. More specifically, the air-conditioning system includes: a compressor, a condenser, an evaporator, an expansion valve, etc. At least one of the condenser and the evaporator is the heat exchanger 100. The first header 13 and the second header 23 of the heat exchanger 100 can be horizontally arranged during use. During use, in the direction in which air flows through the heat exchanger, the second heat exchanger core 2 of the heat exchanger 100 can be located upstream of the first heat exchanger core 1 of the heat exchanger 100.

[0310] The heat exchange system according to an embodiment of the present invention includes: a pump, a heat-releasing heat exchanger, and a heat-absorbing heat exchanger. At least one of the heat-releasing heat exchanger and the heat-absorbing heat exchanger is the heat exchanger 100 described above.

[0311] The heat exchanger according to an embodiment of the present invention can reasonably adjust the heat exchange intensity of the first heat exchanger core, and further adjust the condensate water volume of the heat exchanger. By reducing the condensate water volume of the first heat exchanger core, the water-blowing problem of the air-conditioning system can be solved.

[0312] Although the above embodiments have been described and illustrated, some of the above embodiments and / or features in the above embodiments can be combined to form new embodiments.

Claims

1. A heat exchanger, comprising: a first heat exchanger core and a second heat exchanger core arranged side by side in a first direction, the first heat exchanger core comprising: a first main section, the first main section of the first heat exchanger core comprising a plurality of first heat exchange tubes arranged in a second direction perpendicular to the first direction; a first connection section connected to the first main section; and a first header connected to and in fluid communication with the plurality of first heat exchange tubes on a side of the first main section of the first heat exchanger core opposite to the first connection section, the second heat exchanger core comprising: a second main section, the second main section of the second heat exchanger core comprising a plurality of second heat exchange tubes arranged in the second direction; a second connection section connected to the second main section; and a second header connected to and in fluid communication with the plurality of second heat exchange tubes on a side of the second main section of the second heat exchanger core opposite to the second connection section, wherein the plurality of first heat exchange tubes of the first main section of the first heat exchanger core and the plurality of second heat exchange tubes of the second main section of the second heat exchanger core are interconnected and in fluid communication through the first connection section of the first heat exchanger core and the second connection section of the second heat exchanger core, and wherein the first main section of the first heat exchanger core comprises a first air resistance region and a second air resistance region arranged in a third direction perpendicular to the first direction and the second direction or in a first heat exchanger core extension direction perpendicular to the second direction and parallel to a first plane in which the first main section of the first heat exchanger core is located, the second air resistance region is adjacent to the first header, and the air resistance of the second air resistance region is less than the air resistance of the first air resistance region.

2. The heat exchanger according to claim 1, wherein: the first air resistance region has a dimension in the first heat exchanger core extension direction, the first main section of the first heat exchanger core has a dimension in the first heat exchanger core extension direction, and the ratio of the dimension of the first air resistance region to the dimension of the first main section is greater than or equal to 20% and less than or equal to 90%; or the ratio of the dimension of the first air resistance region in the third direction to the dimension of the first main section of the first heat exchanger core in the third direction is greater than or equal to 20% and less than or equal to 90%; or the ratio of the length of the portion of the first heat exchange tubes occupied by the first air resistance region to the length of the first heat exchange tubes is greater than or equal to 20% and less than or equal to 90%.

3. The heat exchanger according to claim 1, wherein: the first heat exchanger core has a first orthographic projection on a second plane in which the second main section of the second heat exchanger core is located, the second heat exchanger core has a second orthographic projection on the second plane in which the second main section of the second heat exchanger core is located, and the ratio of the overlapping area of the first orthographic projection of the first heat exchanger core and the second orthographic projection of the second heat exchanger core to the area of the second orthographic projection of the second heat exchanger core is greater than or equal to 50% and less than or equal to 100%.

4. The heat exchanger according to claim 1, wherein: the included angle between the first main section of the first heat exchanger core and the second main section of the second heat exchanger core is greater than or equal to 0 degrees and less than or equal to 45 degrees.

5. The heat exchanger according to claim 1, wherein: The first heat exchanger core has a dimension in the extending direction of the first heat exchanger core, and the second heat exchanger core has a dimension in the extending direction of the second heat exchanger core which is perpendicular to the second direction and parallel to the second plane where the second main section of the second heat exchanger core is located. The ratio between the dimension of the first heat exchanger core and the dimension of the second heat exchanger core is greater than or equal to 30% and less than or equal to 100%; Or The ratio between the dimension of the first heat exchanger core in the third direction and the dimension of the second heat exchanger core in the third direction is greater than or equal to 30% and less than or equal to 100%.

6. The heat exchanger according to claim 1, wherein: The first heat exchanger core has a dimension in the extending direction of the first heat exchanger core, and the second heat exchanger core has a dimension in the extending direction of the second heat exchanger core which is perpendicular to the second direction and parallel to the second plane where the second main section of the second heat exchanger core is located. The ratio between the dimension of the first heat exchanger core and the dimension of the second heat exchanger core is greater than or equal to 60% and less than or equal to 100%; Or The ratio between the dimension of the first heat exchanger core in the third direction and the dimension of the second heat exchanger core in the third direction is greater than or equal to 60% and less than or equal to 100%.

7. The heat exchanger according to claim 1, wherein: The first main section of the first heat exchanger core further includes: a first fin connected to the first heat exchange tube and disposed in the first air resistance area, and there is no fin in the second air resistance area of the first main section of the first heat exchanger core. The second main section of the second heat exchanger core further includes: a second fin connected to the second heat exchange tube. The second air resistance area of the first main section of the first heat exchanger core has a dimension in the extending direction of the first heat exchanger core, and the second main section of the second heat exchanger core has a dimension in the extending direction of the second heat exchanger core which is perpendicular to the second direction and parallel to the second plane where the second main section of the second heat exchanger core is located. And the ratio between the dimension of the second air resistance area and the dimension of the second main section of the second heat exchanger core is greater than or equal to 10% and less than or equal to 70%; or The first main section of the first heat exchanger core further includes: a first fin connected to the first heat exchange tube and disposed in the first air resistance area, and there is no fin in the second air resistance area of the first main section of the first heat exchanger core. The second main section of the second heat exchanger core further includes: a second fin connected to the second heat exchange tube. The second air resistance area of the first main section of the first heat exchanger core has a dimension in the third direction, and the second main section of the second heat exchanger core has a dimension in the third direction. And the ratio between the dimension of the second air resistance area and the dimension of the second main section of the second heat exchanger core is greater than or equal to 10% and less than or equal to 70%.

8. The heat exchanger according to claim 1, wherein: The first main section of the first heat exchanger core further includes: first fins disposed in the first air resistance region and connected to the first heat exchange tubes, there are no fins in the second air resistance region of the first main section of the first heat exchanger core, the second main section of the second heat exchanger core further includes: wavy second fins connected to the second heat exchange tubes and arranged alternately with the second heat exchange tubes, the second air resistance region of the first main section of the first heat exchanger core has a dimension in the extending direction of the first heat exchanger core, the second fins have a dimension in the extending direction of the second heat exchanger core that is perpendicular to the second direction and parallel to the second plane where the second main section of the second heat exchanger core is located, and the ratio of the dimension of the second air resistance region to the dimension of the second fins is greater than or equal to 10% and less than or equal to 70%; or The first main section of the first heat exchanger core further includes: first fins disposed in the first air resistance region and connected to the first heat exchange tubes, there are no fins in the second air resistance region of the first main section of the first heat exchanger core, the second main section of the second heat exchanger core further includes: wavy second fins connected to the second heat exchange tubes and arranged alternately with the second heat exchange tubes, the second air resistance region of the first main section of the first heat exchanger core has a dimension in the third direction, the second fins have a dimension in the third direction, and the ratio of the dimension of the second air resistance region to the dimension of the second fins is greater than or equal to 10% and less than or equal to 70%.

9. The heat exchanger according to claim 1, wherein: The spacing between the ends of at least some of the first heat exchange tubes connected to the first header is less than the spacing of the first heat exchange tubes in the first air resistance region.

10. The heat exchanger according to claim 9, wherein: The first heat exchange tubes are flat tubes, and the spacing between the ends of at least some of the first heat exchange tubes connected to the first header is greater than or equal to the thickness of the first heat exchange tubes.

11. The heat exchanger according to claim 1, wherein: The first heat exchange tubes include ends connected to the first header, the ends of the first heat exchange tubes include a plurality of end groups, and the spacing between the ends in each end group is less than the spacing of the first heat exchange tubes in the first air resistance region.

12. The heat exchanger according to claim 11, wherein: The spacing between adjacent end groups is greater than the spacing between the ends in each end group.

13. The heat exchanger according to claim 11, wherein: The first heat exchange tubes are flat tubes, and the spacing between the ends in each end group is greater than or equal to the thickness of the first heat exchange tubes.

14. The heat exchanger according to claim 11, wherein: The first header includes a plurality of subheaders, and each of the plurality of subheaders is connected to and in fluid communication with the ends of one of the plurality of end groups of the first heat exchange tubes.

15. The heat exchanger according to claim 1, wherein: The first main section of the first heat exchanger core further includes: first fins connected to the first heat exchange tubes, the first fins include first sub-fins located in the first air resistance region, and second sub-fins located in the second air resistance region and different from the first sub-fins.

16. The heat exchanger according to claim 15, wherein: The first sub-fin and the second sub-fin of the first fin are corrugated fins, and the peak distance of the first sub-fin is greater than or equal to 50% of the peak distance of the second sub-fin and less than or equal to 90% of the peak distance of the second sub-fin.

17. The heat exchanger according to claim 15, wherein: The second sub-fin of the first fin includes a main body and a plurality of heat exchange tube slots formed in the main body of the second sub-fin. A plurality of first heat exchange tubes are inserted into the heat exchange tube slots of the second sub-fin, and the first sub-fin of the first fin is a corrugated fin.

18. The heat exchanger according to claim 17, wherein: The peak distance of the first sub-fin is greater than or equal to 50% of the pitch of the second sub-fin and less than or equal to the pitch of the second sub-fin.

19. The heat exchanger according to claim 1, wherein: The first heat exchanger core includes a plurality of sub-heat exchanger cores arranged in a second direction. The first header includes a plurality of sub-headers, and each of the plurality of sub-headers is connected to and in fluid communication with the first heat exchange tube of one of the plurality of sub-heat exchanger cores.

20. The heat exchanger according to claim 1, wherein: The first air resistance region is adjacent to the second air resistance region.

21. The heat exchanger according to claim 20, wherein: The first main section of the first heat exchanger core further includes: a first fin connected to the first heat exchange tube. The first fin includes a first sub-fin extending into or near the boundary between the first air resistance region and the second air resistance region in the first air resistance region, and a second sub-fin extending in the first air resistance region and the second air resistance region.

22. The heat exchanger according to claim 21, wherein: The first sub-fin and the second sub-fin of the first fin are corrugated fins and have a dimension in the extending direction of the first heat exchanger core. The dimension of the first sub-fin of the first fin is greater than or equal to 50% of the dimension of the second sub-fin of the first fin and less than the dimension of the second sub-fin of the first fin; or The first sub-fin and the second sub-fin of the first fin are corrugated fins and have a dimension in a third direction. The dimension of the first sub-fin of the first fin is greater than or equal to 50% of the dimension of the second sub-fin of the first fin and less than the dimension of the second sub-fin of the first fin.

23. The heat exchanger according to claim 21, wherein: The number of the first sub-fins of the first fin is greater than or equal to 10% of the number of the second sub-fins of the first fin and less than or equal to 80% of the number of the second sub-fins of the first fin.

24. The heat exchanger according to claim 21, wherein: The first sub-fin and the second sub-fin of the first fin are corrugated fins. The second sub-fin of the first fin includes: a first sub-fin segment located in the first air resistance region and a second sub-fin segment located in the second air resistance region. The first sub-fin segment has the same dimension as the first sub-fin of the first fin in the extending direction of the first heat exchanger core or in a third direction. The peak distance of the first sub-fin segment of the second sub-fin of the first fin is greater than or equal to 50% of the peak distance of the second sub-fin segment and less than or equal to 90% of the peak distance of the second sub-fin segment.

25. The heat exchanger according to claim 24, wherein: The peak distance of the first sub-fin segment of the second sub-fin of the first fin is equal to the peak distance of the first sub-fin of the first fin.

26. The heat exchanger according to claim 15, wherein: The first sub-fin and the second sub-fin of the first fin have different types of fin structures.

27. The heat exchanger according to claim 7 or 8, wherein: The first fin and the second fin have the same shape.

28. The heat exchanger according to claim 7, wherein: The first main section of the first heat exchanger core further includes a drainage insert disposed between the first fin and the first header.

29. The heat exchanger according to claim 17, wherein: The first main section of the first heat exchanger core further includes a drainage insert disposed between the first sub-fin and the second sub-fin of the first fin.

30. The heat exchanger according to claim 28 or 29, wherein: The drainage insert includes a main body and a plurality of heat exchange tube slots formed in the main body of the drainage insert, and a plurality of first heat exchange tubes are inserted into the heat exchange tube slots of the drainage insert.

31. The heat exchanger according to claim 28 or 29, wherein: The drainage insert is perpendicular to the axis of the first heat exchange tube or inclined with respect to the axis of the first heat exchange tube; or The drainage insert is perpendicular to the third direction or inclined with respect to the third direction; or The drainage insert is inclined with respect to the axis of the first header, or includes a plurality of connected drainage insert segments inclined with respect to the axis of the first header; or The drainage insert is inclined with respect to the second direction, or includes a plurality of connected drainage insert segments inclined with respect to the second direction.

32. The heat exchanger according to claim 1, wherein: The second heat exchanger core further includes an outlet header connected to and in fluid communication with the second header, The first heat exchanger core further includes a refrigerant distribution device disposed in the first header, and / or, The second heat exchanger core further includes a refrigerant collection device disposed in the second header.

33. The heat exchanger according to claim 1, wherein: The first heat exchanger core and the second heat exchanger core are formed by bending a flat heat exchanger, and the first connection section and the second connection section are bending sections.

34. The heat exchanger according to claim 1, wherein: The air resistance of the second air resistance area of the first main section of the first heat exchanger core is less than the air resistance of the second main section of the second heat exchanger core.

35. The heat exchanger according to claim 1, wherein: The second air resistance area has a dimension in the extending direction of the first heat exchanger core, the first main section of the first heat exchanger core has a dimension in the extending direction of the first heat exchanger core, and the ratio of the dimension of the second air resistance area to the dimension of the first main section is greater than or equal to 20% and less than or equal to 50%; or The ratio of the dimension of the second air resistance area in the third direction to the dimension of the first main section of the first heat exchanger core in the third direction is greater than or equal to 20% and less than or equal to 50%.

36. An air conditioning system, comprising: The heat exchanger according to any one of claims 1 to 35.

37. The air conditioning system according to claim 36, wherein: The first header pipe and the second header pipe are horizontally arranged during use.

38. The air conditioning system according to claim 36, wherein: During use, in the direction of air flowing through the heat exchanger, the second heat exchanger core is located upstream of the first heat exchanger core.

39. A heat exchange system, comprising: an exothermic heat exchanger; and an endothermic heat exchanger, where at least one of the exothermic heat exchanger and the endothermic heat exchanger is a heat exchanger according to any one of claims 1 to 35.

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