Heat exchanger

Abstract

A heat exchanger is disclosed, the heat exchanger including a first collecting tube, a second collecting tube, a plurality of heat exchange tubes, a plurality of fins, and a first member. The first passage includes a first sub-passage, a second sub-passage, a third sub-passage, and a fourth sub-passage, the first sub-passage being located on the right side of the first member, and the second sub-passage being located on the left side of the first member. The first sub-passage communicates with the heat exchange tube. The first member includes a convex portion facing the first sub-passage, and there is a gap in the left-right direction between the convex portion and the inner circumferential surface of the first peripheral wall surrounding the first sub-passage. The third sub-passage communicates the first sub-passage with the second sub-passage, and the fourth sub-passage communicates the first sub-passage with the second sub-passage. This is advantageous for improving the dispersion of the refrigerant and the overall heat exchange performance when the heat exchanger of the present disclosure operates as an evaporator of the refrigerant.

Description

[Technical field]

[0001] [Cross-reference to related applications] This disclosure claims priority to and the benefit of two Chinese patent applications having Chinese patent application number 202011460421.4, filed on December 11, 2020, and Chinese patent application number 202022987500.2, filed on December 11, 2020, the entire contents of which are hereby incorporated by reference into this disclosure.

[0002] FIELD OF THE DISCLOSURE Embodiments of the present disclosure relate to the field of heat exchange technology, and more particularly to heat exchangers. [Background technology]

[0003] In the prior art, multi-passage heat exchangers are widely applied in air conditioning refrigeration systems. The multi-passage heat exchanger includes heat exchange tubes and fins attached to the outside of the heat exchange tubes, and the refrigerant exchanges heat with the air flowing through the fins through the heat exchange tubes. The heat exchange tubes include a plurality of refrigerant passages arranged at intervals, and the outer peripheral contour of the cross section is generally flat. The multi-passage heat exchanger further includes a collecting tube communicating with the heat exchange tubes, and the refrigerant can enter the plurality of heat exchange tubes through the collecting tubes, or enter the collecting tubes from the plurality of heat exchange tubes.

[0004] In some applications, for example when the multi-passage heat exchanger operates as an evaporator in an evaporating state, the collection tubes are arranged vertically, and the two-phase refrigerant enters the inside of the collection tube, causing the liquid refrigerant to accumulate at the bottom and the gas refrigerant with a low specific gravity to collect at the top, resulting in localized concentration of the refrigerant, which is detrimental to improving the heat exchange performance of the heat exchanger. Summary of the Invention [Problem to be solved by the invention]

[0005] The present disclosure aims to solve at least to some extent one of the technical problems of the related art.

[0006] For this reason, embodiments of the present disclosure propose a heat exchanger. [Means for solving the problem]

[0007] A heat exchanger according to an embodiment of the present disclosure includes a first flow collecting tube and a second flow collecting tube, the first flow collecting tube including a first peripheral wall and a first passage formed by being surrounded by the first peripheral wall; a plurality of heat exchange tubes, one end of the heat exchange tube in the longitudinal direction of the first flow collecting tube is connected to the first flow collecting tube, the heat exchange tube communicates with the first flow collecting tube and the second flow collecting tube, the plurality of heat exchange tubes are arranged at intervals in the longitudinal direction of the first flow collecting tube, and when the heat exchanger operates as an evaporator of a refrigerant, an angle between the longitudinal direction of the first flow collecting tube and a horizontal plane is greater than 0 degrees; and a first assembly located inside the first passage, the first assembly including a first member, the first passage including a first sub-passage and a second sub-passage, the first sub-passage being a first sub-passage and a second sub-passage. a first assembly having a first sub-passage located on one side of the first member in the longitudinal direction of the heat exchange tube and a second sub-passage located on the other side of the first member in the longitudinal direction of the heat exchange tube, the first sub-passage communicating with the heat exchange tube, at least a portion of one longitudinal end of the heat exchange tube being located within the first sub-passage, the first member including a first side portion facing the first sub-passage, the first side portion including a convex portion located within the first sub-passage, there being a gap between the convex portion and the first peripheral wall in the longitudinal direction of the heat exchange tube, there being a plurality of convex portions, the first passage further including a third sub-passage and a fourth sub-passage, the third sub-passage communicating between the first sub-passage and the second sub-passage, and the fourth sub-passage communicating between the first sub-passage and the second sub-passage.

[0008] The first passage in the first collecting tube of the heat exchanger according to the embodiment of the present invention includes a first sub-passage, a second sub-passage, a third sub-passage and a fourth sub-passage, and the first sub-passage, the second sub-passage, the third sub-passage and the fourth sub-passage form at least one flow passage for the refrigerant to circulate through, so that the refrigerant circulates through the flow passage, is uniformly distributed in the first collecting tube and is evenly allocated in the heat exchange tube.

[0009] Therefore, the heat exchanger according to the embodiment of the present invention can perform heat exchange by making full use of the refrigerant, which is advantageous in improving heat exchange performance.

[0010] In some embodiments, the heat exchange tube has a generally flattened outer circumferential cross-sectional profile.

[0011] In some embodiments, the first sub-passage, the second sub-passage, the third sub-passage, and the fourth sub-passage form at least one flow passage within the first passage for circulating refrigerant.

[0012] In some embodiments, the multiple protrusions are spaced apart in the longitudinal direction of the first collecting tube, and at least one of the heat exchange tubes is located between two adjacent protrusions in the longitudinal direction of the first collecting tube.

[0013] In some embodiments, a minimum distance from the at least one heat exchange tube to the first side portion is d1, and a minimum distance in the longitudinal direction of the heat exchange tube between the two adjacent protrusions and an inner circumferential surface of the first circumferential wall surrounding the first sub-passage is d2, and d1 is greater than d2.

[0014] In some embodiments, the first member includes a first through hole and a second through hole, the first through hole penetrating the first member in the longitudinal direction of the heat exchange tube and communicating the first sub-passage with the second sub-passage, the second through hole penetrating the first member in the longitudinal direction of the heat exchange tube and communicating the first sub-passage with the second sub-passage, the first through hole being located on one side of one of the protrusions in the longitudinal direction of the first flow collecting tube, and the second through hole being located on the other side of the protrusion in the longitudinal direction of the first flow collecting tube.

[0015] In some embodiments, a cross-sectional flow area of ​​the first through hole is smaller than a cross-sectional flow area of ​​the second through hole.

[0016] In some embodiments, the first member includes a third through hole, at least two of the protrusions are arranged adjacent to each other in the longitudinal direction of the first collecting tube, the third through hole is located between the at least two of the adjacently arranged protrusions, the third through hole penetrates the first member in the longitudinal direction of the heat exchange tube, and the third through hole is multiple.

[0017] In some embodiments, the heat exchanger further includes a first partition plate, the first partition plate dividing the first passage into a third passage and a fourth passage, the third passage including the first sub-passage and the second sub-passage, the first partition plate including a fourth through-hole penetrating the first partition plate in a longitudinal direction of the first collecting pipe, the fourth through-hole connecting the second sub-passage and the fourth passage.

[0018] In some embodiments, the heat exchanger further includes a second member, the second member being located within the fourth passage, the second member dividing the fourth passage into a fifth sub-passage and a sixth sub-passage arranged in parallel in a longitudinal direction of the heat exchange tube, at least a portion of one longitudinal end of the heat exchange tube being located within the fifth sub-passage, the second member including a fifth through hole penetrating the second member in the longitudinal direction of the heat exchange tube, the fifth through hole connecting the fifth sub-passage and the sixth sub-passage.

[0019] In some embodiments, the heat exchanger further includes a second partition plate, wherein the second partition plate divides the first sub passage into a seventh sub passage and an eighth sub passage in a longitudinal direction of the first flow collecting tube, the second partition plate divides the second sub passage into a ninth sub passage and a tenth sub passage in a longitudinal direction of the first flow collecting tube, the second partition plate includes a sixth through hole penetrating the second partition plate in the longitudinal direction of the first flow collecting tube, the sixth through hole communicating the ninth sub passage and the tenth sub passage, the first member includes a seventh through hole penetrating the first member in the longitudinal direction of the heat exchange tube, the seventh through hole communicating the seventh sub passage and the ninth sub passage, and the first member further includes an eighth through hole penetrating the first member in the longitudinal direction of the heat exchange tube, the eighth through hole communicating the eighth sub passage and the tenth sub passage.

[0020] In some embodiments, the heat exchanger further includes an inlet / outlet pipe, the inlet / outlet pipe including a first inlet / outlet pipe and a second inlet / outlet pipe, the first inlet / outlet pipe and the second inlet / outlet pipe being connected to the second collecting pipe, or the first inlet / outlet pipe is connected to the first collecting pipe and the second inlet / outlet pipe is connected to the second collecting pipe.

[0021] In some embodiments, the first assembly further includes a support plate, the support plate abutting the first member at one longitudinal side of the heat exchange tube, and the support plate abutting the inner circumferential surface of the first peripheral wall at the other longitudinal side of the heat exchange tube.

[0022] In some embodiments, at least one of the convex portions has one end that is away from the first member in the longitudinal direction of the first heat exchange tube abutting the inner surface of the first peripheral wall, and the convex portion has a ninth through hole that penetrates the convex portion in the longitudinal direction of the first flow collecting tube. [Brief description of the drawings]

[0023] [Figure 1] FIG. 2 is a schematic top view of a heat exchanger according to one embodiment of the present invention. [Diagram 2] 2 is a cross-sectional view taken along line AA of the heat exchanger in FIG. 1. [Diagram 3] FIG. 3 is a schematic perspective view of the heat exchanger of FIG. 2. [Figure 4] 1 is a schematic illustrative perspective view of a first member according to an embodiment of the present invention; [Diagram 5] 11 is a schematic perspective view of another exemplary first member according to an embodiment of the present invention. FIG. [Figure 6] FIG. 2 is another exemplary schematic perspective view of a first member according to an embodiment of the present invention. [Figure 7] FIG. 4 is a cross-sectional view of a heat exchanger according to another embodiment of the present invention. [Figure 8] FIG. 8 is a schematic perspective view of the heat exchanger of FIG. [Figure 9] FIG. 11 is a schematic illustrative side view of a first member according to another embodiment of the present invention. [Figure 10] FIG. 11 is a schematic illustrative perspective view of a first member according to another embodiment of the present invention. [Figure 11] FIG. 11 is another exemplary schematic side view of a first member according to another embodiment of the present invention. [Figure 12] FIG. 4 is a cross-sectional view of a heat exchanger according to another embodiment of the present invention. [Figure 13] FIG. 13 is a schematic perspective view of the heat exchanger of FIG. 12. [Figure 14] FIG. 11 is an exemplary schematic side view of a first member according to another embodiment of the present invention. [Figure 15] FIG. 4 is a cross-sectional view of a heat exchanger according to another embodiment of the present invention. [Figure 16] FIG. 16 is a schematic perspective view of the heat exchanger of FIG. [Figure 17] FIG. 11 is an exemplary schematic side view of a first member according to another embodiment of the present invention. [Figure 18] FIG. 11 is an exemplary schematic perspective view of a first member according to another embodiment of the present invention. [Figure 19] FIG. 11 is another exemplary schematic side view of a first member according to another embodiment of the present invention. [Figure 20] FIG. 11 is a cross-sectional view of a heat exchanger according to a fifth embodiment of the present invention. [Figure 21] FIG. 21 is a schematic perspective view of the heat exchanger of FIG. 20. [Figure 22] FIG. 13 is an exemplary schematic side view of a first member according to a fifth embodiment of the present invention. [Diagram 23] FIG. 13 is an exemplary schematic perspective view of a first member according to a fifth embodiment of the present invention. [Explanation of symbols]

[0024] heat exchanger 001, First flow collecting pipe 100, first peripheral wall 110, first passage 120, first end cover 130, first partition plate 140, fourth through hole 141, third passage 150, first sub passage 151, second sub passage 152, third sub passage 153, fourth sub passage 154, seventh sub passage 155, eighth sub passage 156, ninth sub passage 157, tenth sub passage 158, fourth passage 160, fifth sub passage 161, sixth sub passage 162, second partition plate 170, sixth through hole 171, A second flow collecting pipe 200, a second peripheral wall 210, a second passage 220, a fifth passage 221, a sixth passage 222, a second end cover 230, a third partition plate 240, Heat exchange tube 300, fin 400, First entrance / exit pipe 510, second entrance / exit pipe 520, First assembly 600, first member 610, first through hole 611, second through hole 612, third through hole 613, seventh through hole 614, eighth through hole 615, protrusion 620, ninth through hole 621, first gap 622, second gap 623, support plate 630, second member 640, fifth through hole 641. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Hereinafter, the embodiments of the present disclosure will be described in detail, and examples of the embodiments are shown in the drawings. Hereinafter, the embodiments described with reference to the attached drawings are illustrative and are intended to explain the present disclosure, and should not be understood as limitations on the present disclosure. In the description of the present disclosure, the orientations or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are orientations or positional relationships indicated based on the drawings, and are merely intended to explain and simplify the description of the present disclosure, and do not indicate or imply that the devices or elements shown necessarily have a specific orientation and are constructed and operated according to a specific orientation, and therefore should not be understood as limitations on the present disclosure.

[0026] Hereinafter, a heat exchanger 001 according to an embodiment of the present disclosure will be described with reference to the drawings.

[0027] As shown in FIGS. 1 to 23, a heat exchanger 001 according to an embodiment of the present invention includes a first flow collecting tube 100, a second flow collecting tube 200, a plurality of heat exchange tubes 300, a plurality of fins 400, and a first assembly 600.

[0028] As shown in Figs. 1 to 3, the first flow collection pipe 100 includes a first peripheral wall 110 and a first passage 120 formed by being surrounded by the first peripheral wall 110, and a first end cover 130 is provided at both one end (e.g., the upper end of the first flow collection pipe 100 in Fig. 2) in the longitudinal direction (e.g., the vertical direction in Fig. 2) of the first flow collection pipe 100 and the other end (e.g., the lower end of the first flow collection pipe 100 in Fig. 2) in the longitudinal direction of the first flow collection pipe 100. The second flow collection pipe 200 includes a second peripheral wall 210 and a second passage 220 formed by being surrounded by the second peripheral wall 210, and a second end cover 230 is provided at both one end (e.g., the upper end of the second flow collection pipe 200 in Fig. 2) in the longitudinal direction of the second flow collection pipe 200 (e.g., the lower end of the second flow collection pipe 200 in Fig. 2) in the longitudinal direction of the second flow collection pipe 200.

[0029] The outer peripheral contour of the cross section of the heat exchange tube 300 is substantially flattened. One end (e.g., the left end of the heat exchange tube 300 in FIG. 1) in the longitudinal direction (e.g., the left-right direction in FIG. 1) of the heat exchange tube 300 is connected to the first flow collector tube 100, and the other end (e.g., the right end of the heat exchange tube 300 in FIG. 1) in the longitudinal direction of the heat exchange tube 300 is connected to the second flow collector tube 200, thereby communicating the first flow collector tube 100 and the second flow collector tube 200. The multiple heat exchange tubes 300 are arranged at intervals in the longitudinal direction of the first flow collector tube 100, the multiple fins 400 are arranged at intervals in the longitudinal direction of the heat exchange tube 300, the fins 400 pass through the multiple heat exchange tubes 300 in the longitudinal direction of the first flow collector tube 100, and the angle between the longitudinal direction of the first flow collector tube 100 and the horizontal plane is greater than 0 degrees. Preferably, when the heat exchanger operates as an evaporator of the refrigerant, the longitudinal direction of the first flow collecting pipe 100 is perpendicular to the horizontal plane, i.e., the angle between the longitudinal direction of the first flow collecting pipe 100 and the horizontal plane is 90 degrees.

[0030] The first assembly 600 is located inside the first passage 120, and the first assembly 600 includes a first member 610. The first passage 120 includes a first sub-passage 151 and a second sub-passage 152, the first sub-passage 151 is located on one side of the first member 610 in the longitudinal direction of the heat exchange tube 300 (e.g., on the right side of the first member 610 in FIG. 2 ), and the second sub-passage 152 is located on the other side of the first member 610 in the longitudinal direction of the heat exchange tube 300 (e.g., on the left side of the first member 610 in FIG. 2 ).

[0031] The first sub-passage 151 communicates with the heat exchange tube 300 , and at least a portion of one end of the heat exchange tube 300 in the longitudinal direction is located within the first sub-passage 151 .

[0032] The first member 610 includes a first side portion facing the first sub-passage 151, the first side portion including a protruding portion 620 located in the first sub-passage 151, and there is a gap between the protruding portion 620 and the inner circumferential surface of the first circumferential wall 110 surrounding the first sub-passage 151 in the longitudinal direction of the heat exchange tube 300, and there are a plurality of protruding portions 620. This allows the refrigerant to flow downward through this gap in the first sub-passage 151, and the protruding portion 620 can slow down the flow of the refrigerant, which is advantageous in that the refrigerant is distributed uniformly among the plurality of heat exchange tubes 300.

[0033] The first passage 120 further includes a third sub-passage 153 and a fourth sub-passage 154. The third sub-passage 153 connects the first sub-passage 151 to the second sub-passage 152, and the fourth sub-passage 154 connects the first sub-passage 151 to the second sub-passage 152, thereby forming at least one circulation passage in the first passage 120 for the refrigerant to circulate and flow.

[0034] Specifically, the third sub-passage 153 is located at one end (e.g., the upper end of the first member 610 in FIG. 2) of the longitudinal direction (e.g., the vertical direction in FIG. 2) of the first member 610, and the fourth sub-passage 154 is located at the other end (e.g., the lower end of the first member 610 in FIG. 2) of the first member 610 in the longitudinal direction.

[0035] The first passage 120 in the first collecting tube 100 of the heat exchanger 001 according to the embodiment of the present invention includes a first sub-passage 151, a second sub-passage 152, a third sub-passage 153, and a fourth sub-passage 154, and the first sub-passage 151, the second sub-passage 152, the third sub-passage 153, and the fourth sub-passage 154 form at least one flow passage through which the refrigerant circulates. As a result, the refrigerant circulates in the flow passage, and the refrigerant can be uniformly distributed in the first collecting tube 100. In addition, the convex portion 620 located in the first sub-passage 151 can slow down the flow of the refrigerant, reducing local concentration of the refrigerant in the collecting tube, and is advantageous in allocating the refrigerant among the multiple heat exchange tubes 300.

[0036] Therefore, the heat exchanger 001 according to the embodiment of the present invention is advantageous in that the refrigerant is dispersed and distributed within the flow collection pipe, and has good heat exchange performance.

[0037] In some embodiments, as shown in Figs. 2 and 3, the multiple protrusions 620 are arranged at intervals in the longitudinal direction of the first flow collector tube 100, and at least one heat exchange tube 300 is located between two protrusions 620 adjacent to each other in the longitudinal direction of the first flow collector tube 100. That is, one or more heat exchange tubes 300 are provided between two protrusions 620 adjacent to each other in the longitudinal direction of the first flow collector tube 100. In other words, at least some of the heat exchange tubes 300 and the multiple protrusions 620 are alternately arranged in the longitudinal direction of the first flow collector tube 100. This is advantageous for the heat exchanger 001 according to the embodiment of the present invention to uniformly distribute the refrigerant in the multiple heat exchange tubes 300, which is advantageous for improving the heat exchange performance of the heat exchanger 001.

[0038] In some embodiments, the minimum distance from the at least one heat exchange tube 300 to the first side is d1, and the minimum distance in the longitudinal direction of the heat exchange tube 300 between the two adjacent protrusions 620 and the inner circumferential surface of the first peripheral wall 110 surrounding the first sub-passage 151 is d2, and d1 is greater than d2. That is, the minimum distance from the at least one heat exchange tube 300 to one side surface of the first member 610 facing the first sub-passage 151 (for example, the right side surface of the first member 610 in FIG. 2) is d1, and the minimum distance in the longitudinal direction of the heat exchange tube 300 between the two adjacent protrusions 620 and the inner circumferential surface of the first peripheral wall 110 surrounding the first sub-passage 151 in the above embodiments is d2, and d1 is greater than d2. Specifically, in the first sub-passage 151, the protrusions 620 and one end of the heat exchange tube 300 in the longitudinal direction are distributed in a stepped manner. As a result, when the refrigerant of the heat exchanger 001 according to the embodiment of the present invention flows through the first sub-passage 151, it is successively blocked by the convex portion 620 and the heat exchange tube 300, so that the refrigerant flow path becomes meandering and the flow speed of the refrigerant is decelerated. This is advantageous to uniformly distribute the refrigerant among the multiple heat exchange tubes 300, and further improves the heat exchange performance of the heat exchanger 001.

[0039] In some embodiments, as shown in FIGS. 2 and 3, the first assembly 600 further includes a support plate 630, in which one side of the support plate 630 in the longitudinal direction of the heat exchange tube 300 (for example, the right side of the support plate 630 in FIG. 2) abuts against the first member 610, and the other side of the support plate 630 in the longitudinal direction of the heat exchange tube 300 (for example, the left side of the support plate 630 in FIG. 2) abuts against the inner circumferential surface of the first peripheral wall 110. That is, the right side of the support plate 630 abuts against the left side surface of the first member 610, the right side of the support plate 630 is connected to the left side surface of the first member 610, the left side of the support plate 630 abuts against the inner circumferential surface of the first peripheral wall 110, and the left side of the support plate 630 is connected to the inner circumferential surface of the first peripheral wall 110. As a result, the support plate 630 supports and positions the first member 610, thereby making the position of the first member 610 stable and reliable.

[0040] In some embodiments, as shown in FIGS. 2 to 5, at least one protrusion 620 has one end (for example, the right end of the protrusion 620 in FIG. 2) that is separated from the first member 610 in the longitudinal direction of the first heat exchange tube 300 abutting against the inner circumferential surface of the first circumferential wall 110. The protrusion 620 has a ninth through hole 621 that penetrates the protrusion 620 in the longitudinal direction of the first flow collector tube 100. That is, the right end of at least one protrusion 620 abuts against the inner circumferential surface of the first circumferential wall 110, and the protrusion 620 has a ninth through hole 621 that penetrates the protrusion 620 in the vertical direction. As a result, the protrusion 620 supports and positions the first member 610, making the position of the first member 610 stable and reliable, and the refrigerant can flow through the protrusion 620 via the ninth through hole 621, which is advantageous in that the refrigerant is uniformly distributed within the heat exchange tube 300. Specifically, there are a plurality of ninth through holes 621, and the plurality of ninth through holes 621 are arranged at intervals in the front-rear direction.

[0041] 5 and 6, at least one of the protrusions 620 has a part of one end of the first heat exchange tube 300 that is separated from the first member 610 in the longitudinal direction thereof in contact with the inner circumferential surface of the first peripheral wall 110. The protrusion 620 has a gap between the remaining part of the one end of the first heat exchange tube 300 that is separated from the first member 610 in the longitudinal direction thereof and the inner circumferential surface of the first peripheral wall 110. Specifically, both side portions of the right end of at least one of the protrusions 620 abut on the inner circumferential surface of the first peripheral wall 110, and a first gap 622 is formed between the central portion of the protrusion 620 and the inner circumferential surface of the first peripheral wall 110. Alternatively, the central portion of the right end of at least one of the protrusions 620 abuts on the inner circumferential surface of the first peripheral wall 110, and a second gap 623 is formed between both side portions of the protrusion 620 and the inner circumferential surface of the first peripheral wall 110.

[0042] In some embodiments, as shown in Figs. 7 to 11, the first member 610 includes a first through hole 611 and a second through hole 612. The first through hole 611 penetrates the first member 610 in the longitudinal direction of the heat exchange tube 300, and communicates the first sub-passage 151 and the second sub-passage 152. The second through hole 612 penetrates the first member 610 in the longitudinal direction of the heat exchange tube 300, and communicates the first sub-passage 151 and the second sub-passage 152. The first through hole 611 is located on one side of one convex portion 620 in the longitudinal direction of the first flow collecting tube 100, and the second through hole 612 is located on the other side of the convex portion 620 in the longitudinal direction of the first flow collecting tube 100. That is, the second sub-passage 152, the third sub-passage 153, the first sub-passage 151, and the first through hole 611 form one circulation flow passage. The second sub-passage 152, the second through hole 612, the first sub-passage 151 and the fourth sub-passage 154 form another circulation passage. Specifically, the cross sections of the first through hole 611 and the second through hole 612 are both circular. Note that one end in the longitudinal direction of a portion of the heat exchange tubes 300 is located in one circulation passage, and one end in the longitudinal direction of another portion of the heat exchange tubes 300 is located in another circulation passage. As a result, the refrigerant of the heat exchanger 001 according to the embodiment of the present invention is dispersed and distributed in the collection tube, which is advantageous in allocating the refrigerant among the multiple heat exchange tubes 300, and is therefore advantageous in improving the heat exchange performance of the heat exchanger 001.

[0043] Furthermore, one end of the protruding portion 620, which is separated from the first member 610 in the longitudinal direction of the first heat exchange tube 300, abuts against the inner peripheral surface of the first peripheral wall 110. That is, the protruding portion 620 divides the first sub-passage 151 into two parts. That is, the second sub-passage 152, the third sub-passage 153, a part of the first sub-passage 151, and the first through hole 611 form one circulation flow passage, and the second sub-passage 152, the second through hole 612, another part of the first sub-passage 151, and the fourth sub-passage 154 form another circulation flow passage. As a result, the refrigerant in the part of the first sub-passage 151 and the refrigerant in the other part of the first sub-passage 151 do not affect each other, which is advantageous in reducing the concentration distribution of the refrigerant in the collection tube, which is advantageous in allocating the refrigerant in the first sub-passage 151 among a plurality of heat exchange tubes 300, and further advantageous in improving the heat exchange performance of the heat exchanger 001.

[0044] In some embodiments, as shown in Figs. 9 to 11, the cross-sectional flow area of ​​the first through hole 611 is smaller than the cross-sectional flow area of ​​the second through hole 612. That is, the hole diameter of the first through hole 611 is smaller than the hole diameter of the second through hole 612. The refrigerant in the second sub-passage 152 easily enters the first sub-passage 151 from the second through hole 612, and does not affect the refrigerant in the first sub-passage 151 from the first through hole 611. This allows the one circulation passage and the other circulation passage of the heat exchanger 001 according to the embodiment of the present invention to be relatively independent from each other, which is advantageous in promoting the flow of the refrigerant in the flow collecting tube and allocating the refrigerant among the multiple heat exchange tubes 300, and is further advantageous in improving the heat exchange performance of the heat exchanger 001.

[0045] In some embodiments, as shown in Fig. 11, the first through hole 611 and the second through hole 612 are spaced apart at a certain distance in the width direction of the first member 610 (for example, the front-rear direction in Fig. 9). That is, the first through hole 611 and the second through hole 612 are offset in the width direction of the first member 610, and the refrigerant flow path of one circulation flow path and the refrigerant flow path of the other circulation flow path are also offset in the width direction of the first member 610. As a result, the heat exchanger 001 according to the embodiment of the present invention has at least two flow paths through which the refrigerant circulates and flows inside, which is advantageous in reducing local concentration of the refrigerant, facilitating allocation of the refrigerant among the multiple heat exchange tubes 300, and further advantageous in improving the heat exchange performance of the heat exchanger 001.

[0046] Specifically, the first through hole 611 is located on one side of the center line of the first member 610 in the longitudinal direction, and the second through hole is located on the other side of the center line of the first member 610 in the longitudinal direction.

[0047] In some embodiments, as shown in Figs. 12 to 14, the first member 610 includes a third through hole 613, at least two protruding portions 620 are arranged adjacent to each other in the longitudinal direction of the first flow collecting tube 100, the third through hole 613 is located between the at least two protruding portions 620 arranged adjacent to each other, the third through hole 613 penetrates the first member 610 in the longitudinal direction of the heat exchange tube 300, and the third through hole 613 is multiple. That is, the third through hole 613 is located between the third sub passage 153 and the fourth sub passage 154. Note that most of the refrigerant in the second sub passage 152 can enter the first sub passage 151 through the third sub passage 153, and a small portion of the refrigerant in the second sub passage 152 passes through a position that cannot reach the third sub passage 153, and this small portion of the refrigerant can enter the first sub passage 151 through the third through hole 613. As a result, the heat exchanger 001 of this embodiment of the present invention is advantageous for sufficient flow of refrigerant within the collection tube, promotes allocation of refrigerant among multiple heat exchange tubes 300, and is further advantageous for improving the heat exchange performance of the heat exchanger 001.

[0048] Specifically, the multiple third through holes 613 are arranged at intervals in the longitudinal direction of the first flow collection pipe 100, and the multiple third through holes 613 and the multiple convex portions 620 are arranged alternately in the longitudinal direction of the first flow collection pipe 100. That is, one third through hole 613 is provided between two convex portions 620 adjacent to each other in the longitudinal direction of the first flow collection pipe 100, and one convex portion 620 is provided between two third through holes 613 adjacent to each other in the longitudinal direction of the first flow collection pipe 100.

[0049] In some embodiments, as shown in Figures 2, 3, 7, 8, 12 and 13, the heat exchanger 001 further includes a partition plate 140, the first partition plate 140 divides the first passage 120 into a third passage 150 and a fourth passage 160, the third passage 150 includes a first sub-passage 151, a second sub-passage 152, a third sub-passage 153 and a fourth sub-passage 154, the first partition plate 140 includes a fourth through-hole 141 penetrating the first partition plate 140 in the longitudinal direction of the first collecting pipe 100, and the fourth through-hole 141 communicates the second sub-passage 152 and the fourth passage 160. The refrigerant in the fourth passage 160 is ejected into the second sub-passage 152 through the fourth through-hole 141 so that the refrigerant in the second sub-passage 152 enters the first sub-passage 151 through the third sub-passage 153. This allows most of the refrigerant in the second sub-passage 152 to enter the first sub-passage 151 via the third sub-passage 153, which is advantageous for the refrigerant to flow in the collection tube, thereby being allocated among the multiple heat exchange tubes 300, and is further advantageous for improving the heat exchange performance of the heat exchanger 001.

[0050] 2 to 23, in some embodiments, the third sub-passage 153 is formed between one longitudinal end of the first member 610 and the first end cover 130 at one longitudinal end of the first flow collection pipe 100, and the fourth sub-passage 154 is formed between the other longitudinal end of the first member 610 and the first partition plate 140. This allows the refrigerant to circulate throughout the entire first sub-passage 151 and the entire second sub-passage 152, which is advantageous for uniform allocation of the refrigerant and for improving the heat exchange performance of the heat exchanger 001.

[0051] Specifically, there is a gap between one longitudinal end of the first member 610 and the first end cover 130 at one longitudinal end of the first flow collecting pipe 100, and this gap forms the third sub-passage 153. Alternatively, a part of one longitudinal end of the first member 610 abuts against the first end cover 130 at one longitudinal end of the first flow collecting pipe 100, and there is a gap between the remaining part of one longitudinal end of the first member 610 and the first end cover 130 at one longitudinal end of the first flow collecting pipe 100, and this gap forms the third sub-passage 153.

[0052] A part of the other longitudinal end of the first member 610 abuts against the first partition plate 140, and there is a gap between the remaining part of the other longitudinal end of the first member 610 and the first partition plate 140, and this gap forms the fourth sub-passage 154. Alternatively, the other longitudinal end of the first member 610 has a through hole that penetrates the first member 610 in the longitudinal direction of the heat exchange tube 300, and this through hole forms the fourth sub-passage 154.

[0053] In some embodiments, as shown in FIGS. 15 to 19, the heat exchanger 001 further includes a second member 640. The second member 640 is located in the fourth passage 160, and the second member 640 divides the fourth passage 160 into a fifth sub-passage 161 and a sixth sub-passage 162 arranged in parallel in the longitudinal direction of the heat exchange tube 300. At least a portion of one end of the heat exchange tube 300 in the longitudinal direction is located in the fifth sub-passage 161. The second member 640 includes a fifth through-hole 641 penetrating the second member 640 in the longitudinal direction of the heat exchange tube 300, and the fifth through-hole 641 connects the fifth sub-passage 161 and the sixth sub-passage 162. That is, the second member 640 divides the fourth passage 160 into a fifth sub passage 161 and a sixth sub passage 162 within the fourth passage 160, and the second member 640 has a fifth through hole 641 penetrating the second member 640. The fifth sub passage 161 and the sixth sub passage 162 are arranged in parallel in the longitudinal direction of the heat exchange tube 300, and the fifth sub passage 161 and the sixth sub passage 162 are communicated with each other via the fifth through hole 641. Specifically, the second member 640 and the first member 610 may have an integral structure or separate structures.

[0054] The second member 640 and the first member 610 divide the first passage 120 into a first portion and a second portion, the first portion including the fifth sub-passage 161 and the first sub-passage 151, and the second portion including the sixth sub-passage 162 and the second sub-passage 152. The refrigerant enters the second portion from the first portion, and then passes through the second portion to enter the heat exchange tube 300. Specifically, most of the refrigerant enters the second sub-passage 152 from the sixth sub-passage 162, and the refrigerant in the second sub-passage 152 enters the first sub-passage 151, the refrigerant in the first sub-passage 151 is evenly distributed in the heat exchange tube 300, and the remaining refrigerant in the first sub-passage 151 circulates again to enter the second sub-passage 152. A small portion of the refrigerant enters the fifth sub-passage 161 from the sixth sub-passage 162, and the refrigerant in the fifth sub-passage 161 is evenly distributed in the heat exchange tube 300. The refrigerant circulates in the first passage 120, which is advantageous in that the refrigerant is distributed uniformly in the heat exchange tube 300, and is also advantageous in improving the heat exchange performance of the heat exchanger 001.

[0055] In some embodiments, as shown in Figures 20 to 23, the heat exchanger 001 further includes a second partition plate 170. The second partition plate 170 divides the first sub-passage 151 into a seventh sub-passage 155 and an eighth sub-passage 156 in the longitudinal direction of the first flow collecting pipe 100, and the second partition plate 170 divides the second sub-passage 152 into a ninth sub-passage 157 and a tenth sub-passage 158 in the longitudinal direction of the first flow collecting pipe 100. The second partition plate 170 includes a sixth through hole 171 penetrating the second partition plate 170 in the longitudinal direction of the first flow collecting pipe 100, and the sixth through hole 171 connects the ninth sub-passage 157 and the tenth sub-passage 158. The first member 610 includes a seventh through hole 614 penetrating the first member 610 in the longitudinal direction of the heat exchange tube 300, and the seventh through hole 614 connects the seventh sub passage 155 and the ninth sub passage 157. The first member 610 further includes an eighth through hole 615 penetrating the first member 610 in the longitudinal direction of the heat exchange tube 300, and the eighth through hole 615 connects the eighth sub passage 156 and the tenth sub passage 158.

[0056] That is, the ninth sub passage 157, the seventh through hole 614, the seventh sub passage 155, and the fourth sub passage 154 form one circulation flow passage. The tenth sub passage 158, the third sub passage 153, the first sub passage 151, and the eighth through hole 615 form another circulation flow passage. Note that one longitudinal end of a portion of the heat exchange tubes 300 is located in the one circulation flow passage, and one longitudinal end of another portion of the heat exchange tubes 300 is located in the other circulation flow passage.

[0057] Specifically, the refrigerant enters the ninth sub passage 157 from the fourth passage 160, and a part of the refrigerant in the ninth sub passage 157 circulates and flows in one circulation passage. Another part of the refrigerant in the ninth sub passage 157 enters the tenth sub passage 158, and the refrigerant in the tenth sub passage 158 circulates and flows in another circulation passage. This intensifies the flow of the refrigerant in the collection tube of the heat exchanger 001 according to the embodiment of the present invention, which is advantageous in that the refrigerant is uniformly distributed in the heat exchange tube 300, and is advantageous in improving the heat exchange performance of the heat exchanger 001.

[0058] In some embodiments, as shown in Figures 1 to 23, the heat exchanger 001 further includes an inlet / outlet pipe, which includes a first inlet / outlet pipe 510 and a second inlet / outlet pipe 520, and the first inlet / outlet pipe 510 and the second inlet / outlet pipe 520 are connected to the second flow collector pipe 200, or the first inlet / outlet pipe 510 is connected to the first flow collector pipe 100, and the second inlet / outlet pipe 520 is connected to the second flow collector pipe 200.

[0059] Specifically, as shown in Figs. 1 to 3, 7, 8, 12, 13, 20 and 21, the first inlet / outlet pipe 510 and the second inlet / outlet pipe 520 are both connected to the second flow collecting pipe 200. The second flow collecting pipe 200 includes a third partition plate 240, which divides the second passage 220 into a fifth passage 221 and a sixth passage 222, and the fifth passage 221 and the sixth passage 222 are arranged in parallel in the longitudinal direction of the second flow collecting pipe 200. The first inlet / outlet pipe 510 communicates with the fifth passage 221, and the second inlet / outlet pipe 520 communicates with the sixth passage 222. This increases the number of refrigerant flow paths in the heat exchanger 001 according to the embodiment of the present invention, which is advantageous in improving the heat exchange performance of the heat exchanger 001.

[0060] 15 and 16, the first inlet / outlet pipe 510 is connected to the first collecting pipe 100, and the second inlet / outlet pipe 520 is connected to the second collecting pipe 200. The refrigerant enters the first collecting pipe 100 from the first inlet / outlet pipe 510, and the refrigerant is allocated to the heat exchange tubes 300 in the first collecting pipe 100. The refrigerant that has been heat exchanged in the heat exchange tubes 300 joins together and enters the second collecting pipe 200, and the refrigerant in the second collecting pipe 200 flows out from the second inlet / outlet pipe 520. As a result, the heat exchanger 001 according to the embodiment of the present invention is favorable for sufficient heat exchange of the refrigerant in the heat exchanger, and promotes uniform allocation of the refrigerant in the multiple heat exchange tubes 300, which is favorable for improving the heat exchange performance of the heat exchanger 001.

[0061] Hereinafter, with reference to Figs. 1 to 23, a heat exchanger 001 according to some specific embodiments of the present invention will be described.

[0062] As shown in Figures 1 to 6, the heat exchanger 001 includes a first flow collection pipe 100, a second flow collection pipe 200, a plurality of heat exchange tubes 300, a plurality of fins 400, a first assembly 600, a first partition plate 140, a first inlet / outlet pipe 510, and a second inlet / outlet.

[0063] The first flow collection pipe 100 includes a first peripheral wall 110 and a first passage 120 formed by being surrounded by the first peripheral wall 110, and a first end cover 130 is provided at both the upper end and the lower end of the first flow collection pipe 100. The second flow collection pipe 200 includes a second peripheral wall 210 and a second passage 220 formed by being surrounded by the second peripheral wall 210, and a second end cover 230 is provided at both the upper end and the lower end of the second flow collection pipe 200.

[0064] The first inlet / outlet pipe 510 and the second inlet / outlet pipe 520 are both connected to the second flow collecting pipe 200. The second flow collecting pipe 200 includes a third partition plate 240 which divides the second passage 220 into a fifth passage 221 and a sixth passage 222, and the fifth passage 221 and the sixth passage 222 are arranged in parallel in the longitudinal direction of the second flow collecting pipe 200. The first inlet / outlet pipe 510 communicates with the fifth passage 221, and the second inlet / outlet pipe 520 communicates with the sixth passage 222.

[0065] The outer peripheral contour of the cross section of the heat exchange tube 300 is approximately flattened. The left end of the heat exchange tube 300 is connected to the first flow collector tube 100, and the right end of the heat exchange tube 300 is connected to the second flow collector tube 200, thereby communicating the first flow collector tube 100 and the second flow collector tube 200. The multiple heat exchange tubes 300 are arranged at intervals in the vertical direction, and the multiple fins 400 are arranged at intervals in the horizontal direction, and the fins 400 pass through the multiple heat exchange tubes 300 in the vertical direction.

[0066] The first assembly 600 is located inside the first passage 120, and the first assembly 600 includes a first member 610. The first passage 120 includes a first sub-passage 151 and a second sub-passage 152, where the first sub-passage 151 is located to the right of the first member 610 and the second sub-passage 152 is located to the left of the first member 610.

[0067] The first sub-passage 151 communicates with the heat exchange tube 300 , and at least a portion of the left end of the heat exchange tube 300 is located within the first sub-passage 151 .

[0068] The first member 610 includes a first side portion facing the first sub-passage 151, and the first side portion includes a protrusion 620 located within the first sub-passage 151, and in the left-right direction, there is a gap between the protrusion 620 and the inner surface of the first peripheral wall 110 surrounding the first sub-passage 151, and there are multiple protrusions 620.

[0069] The first passage 120 further includes a third sub-passage 153 and a fourth sub-passage 154, the third sub-passage 153 communicating the first sub-passage 151 with the second sub-passage 152, and the fourth sub-passage 154 communicating the first sub-passage 151 with the second sub-passage 152, thereby forming at least one circulation flow passage within the first passage 120.

[0070] The third sub-passage 153 is located at the upper end of the first member 610 , and the fourth sub-passage 154 is located at the lower end of the first member 610 .

[0071] The multiple protrusions 620 are arranged at intervals in the longitudinal direction of the first flow collecting pipe 100, and at least one heat exchange tube 300 is located between two protrusions 620 adjacent to each other in the longitudinal direction of the first flow collecting pipe 100.

[0072] The minimum distance from the at least one heat exchange tube 300 to the first side portion is d1, and the minimum distance in the longitudinal direction of the heat exchange tube 300 between the two adjacent protrusions 620 and the inner surface of the first peripheral wall 110 surrounding the first sub-passage 151 is d2, and d1 is greater than d2.

[0073] The first assembly 600 further includes a support plate 630 , a right side of which abuts against the first member 610 , and a left side of which abuts against the inner circumferential surface of the first peripheral wall 110 .

[0074] A part of the right end of at least one protrusion 620 abuts against the inner circumferential surface of the first circumferential wall 110. There is a gap between the remaining part of the right end of the protrusion 620 and the inner circumferential surface of the first circumferential wall 110. The protrusion 620 has a ninth through hole 621 that penetrates the protrusion 620 in the longitudinal direction of the first flow collecting pipe 100.

[0075] The first partition plate 140 divides the first passage 120 into a third passage 150 and a fourth passage 160, the third passage 150 including a first sub-passage 151, a second sub-passage 152, a third sub-passage 153 and a fourth sub-passage 154, the first partition plate 140 including a fourth through hole 141 penetrating the first partition plate 140 in the longitudinal direction of the first collection pipe 100, and the fourth through hole 141 connects the second sub-passage 152 and the fourth passage 160.

[0076] The third sub-passage 153 is formed between the upper longitudinal end of the first member 610 and the first end cover 130 at the upper end of the first collection pipe 100, and the fourth sub-passage 154 is formed between the lower end of the first member 610 and the first partition plate 140.

[0077] As shown in Figs. 7 to 11, the difference from Example 1 is that the first member 610 includes a first through hole 611 and a second through hole 612. The first through hole 611 penetrates the first member 610 in the longitudinal direction of the heat exchange tube 300, and connects the first sub-passage 151 and the second sub-passage 152. The second through hole 612 penetrates the first member 610 in the longitudinal direction of the heat exchange tube 300, and connects the first sub-passage 151 and the second sub-passage 152. The first through hole 611 is located on one side of one protruding portion 620 in the longitudinal direction of the first flow collecting tube 100, and the second through hole 612 is located on the other side of the protruding portion 620 in the longitudinal direction of the first flow collecting tube 100. One end of the protrusion 620 , which is separated from the first member 610 in the longitudinal direction of the first heat exchange tube 300 , comes into contact with the inner circumferential surface of the first circumferential wall 110 .

[0078] The cross-sectional flow area of ​​the first through hole 611 is smaller than the cross-sectional flow area of ​​the second through hole 612. The first through hole 611 and the second through hole 612 are spaced apart from each other by a fixed distance in the front-rear direction. The first through hole 611 is located on one side of a center line of the first member 610 in the longitudinal direction, and the second through hole is located on the other side of the center line of the first member 610 in the longitudinal direction.

[0079] 12 to 14, the difference from Example 1 is that the first member 610 includes a third through hole 613, at least two protrusions 620 are arranged adjacent to each other in the longitudinal direction of the first flow collecting tube 100, the third through hole 613 is located between the at least two protrusions 620 arranged adjacent to each other, the third through hole 613 penetrates the first member 610 in the longitudinal direction of the heat exchange tube 300, and there are a plurality of third through holes 613. The third through hole 613 is located between the third sub-passage 153 and the fourth sub-passage 154.

[0080] The multiple third through holes 613 are arranged at intervals in the longitudinal direction of the first flow collecting pipe 100, and the multiple third through holes 613 and the multiple protruding portions 620 are arranged alternately in the longitudinal direction of the first flow collecting pipe 100.

[0081] 20 to 23, the difference from Example 2 is that the heat exchanger 001 further includes a second partition plate 170. The second partition plate 170 divides the first sub-passage 151 into a seventh sub-passage 155 and an eighth sub-passage 156 in the longitudinal direction of the first flow collecting pipe 100, and the second partition plate 170 divides the second sub-passage 152 into a ninth sub-passage 157 and a tenth sub-passage 158 in the longitudinal direction of the first flow collecting pipe 100. The second partition plate 170 includes a sixth through hole 171 penetrating the second partition plate 170 in the longitudinal direction of the first flow collecting pipe 100, and the sixth through hole 171 connects the ninth sub-passage 157 and the tenth sub-passage 158. The first member 610 includes a seventh through hole 614 penetrating the first member 610 in the longitudinal direction of the heat exchange tube 300, and the seventh through hole 614 connects the seventh sub passage 155 and the ninth sub passage 157. The first member 610 further includes an eighth through hole 615 penetrating the first member 610 in the longitudinal direction of the heat exchange tube 300, and the eighth through hole 615 connects the eighth sub passage 156 and the tenth sub passage 158.

[0082] The ninth sub passage 157, the seventh through hole 614, the seventh sub passage 155, and the fourth sub passage 154 form one circulation passage. The tenth sub passage 158, the third sub passage 153, the first sub passage 151, and the eighth through hole 615 form another circulation passage.

[0083] As shown in Figures 15 to 19, the heat exchanger 001 includes a first flow collection pipe 100, a second flow collection pipe 200, a plurality of heat exchange tubes 300, a plurality of fins 400, a first assembly 600, a first partition plate 140, a first inlet / outlet pipe 510, and a second inlet / outlet.

[0084] The first flow collection pipe 100 includes a first peripheral wall 110 and a first passage 120 formed by being surrounded by the first peripheral wall 110, and a first end cover 130 is provided at both the upper end and the lower end of the first flow collection pipe 100. The second flow collection pipe 200 includes a second peripheral wall 210 and a second passage 220 formed by being surrounded by the second peripheral wall 210, and a second end cover 230 is provided at both the upper end and the lower end of the second flow collection pipe 200.

[0085] The first inlet / outlet pipe 510 is connected to the first flow collecting pipe 100 , and the second inlet / outlet pipe 520 is connected to the second flow collecting pipe 200 .

[0086] The outer peripheral contour of the cross section of the heat exchange tube 300 is approximately flattened. The left end of the heat exchange tube 300 is connected to the first flow collector tube 100, and the right end of the heat exchange tube 300 is connected to the second flow collector tube 200, thereby communicating the first flow collector tube 100 and the second flow collector tube 200. The multiple heat exchange tubes 300 are arranged at intervals in the vertical direction, and the multiple fins 400 are arranged at intervals in the horizontal direction, and the fins 400 pass through the multiple heat exchange tubes 300 in the vertical direction.

[0087] The first assembly 600 is located inside the first passage 120, and the first assembly 600 includes a first member 610 and a second member 640. The first passage 120 includes a first sub-passage 151 and a second sub-passage 152, where the first sub-passage 151 is located to the right of the first member 610 and the second sub-passage 152 is located to the left of the first member 610.

[0088] The first sub-passage 151 communicates with the heat exchange tube 300 , and at least a portion of the left end of the heat exchange tube 300 is located within the first sub-passage 151 .

[0089] The first member 610 includes a first side portion facing the first sub-passage 151, and the first side portion includes a protrusion 620 located within the first sub-passage 151, and in the left-right direction, there is a gap between the protrusion 620 and the inner surface of the first peripheral wall 110 surrounding the first sub-passage 151, and there are multiple protrusions 620.

[0090] The first passage 120 further includes a third sub-passage 153 and a fourth sub-passage 154, the third sub-passage 153 communicating the first sub-passage 151 with the second sub-passage 152, and the fourth sub-passage 154 communicating the first sub-passage 151 with the second sub-passage 152, thereby forming at least one circulation flow passage within the first passage 120.

[0091] The third sub-passage 153 is located at the upper end of the first member 610 , and the fourth sub-passage 154 is located at the lower end of the first member 610 .

[0092] The second member 640 is located in the fourth passage 160, and divides the fourth passage 160 into a fifth sub passage 161 and a sixth sub passage 162 arranged in parallel on the left and right, with the fifth sub passage 161 located on the right and the sixth sub passage 162 located on the left. At least a part of one end in the longitudinal direction of the heat exchange tube 300 is located in the fifth sub passage 161. The second member 640 includes a fifth through hole 641 penetrating the second member 640 in the longitudinal direction of the heat exchange tube 300, and the fifth through hole 641 connects the fifth sub passage 161 and the sixth sub passage 162. The first inlet / outlet pipe 510 connects to the sixth sub passage 162, and the second inlet / outlet pipe 520 connects to the second passage 220.

[0093] The multiple protrusions 620 are arranged at intervals in the longitudinal direction of the first flow collecting pipe 100, and at least one heat exchange tube 300 is located between two protrusions 620 adjacent to each other in the longitudinal direction of the first flow collecting pipe 100.

[0094] The minimum distance from the at least one heat exchange tube 300 to the first side portion is d1, and the minimum distance in the longitudinal direction of the heat exchange tube 300 between the two adjacent protrusions 620 and the inner surface of the first peripheral wall 110 surrounding the first sub-passage 151 is d2, and d1 is greater than d2.

[0095] The first assembly 600 further includes a support plate 630 , a right side of which abuts against the first member 610 , and a left side of which abuts against the inner circumferential surface of the first peripheral wall 110 .

[0096] A part of the right end of at least one protrusion 620 abuts against the inner circumferential surface of the first circumferential wall 110. There is a gap between the remaining part of the right end of the protrusion 620 and the inner circumferential surface of the first circumferential wall 110. The protrusion 620 has a ninth through hole 621 that penetrates the protrusion 620 in the longitudinal direction of the first flow collecting pipe 100.

[0097] The first partition plate 140 divides the first passage 120 into a third passage 150 and a fourth passage 160, the third passage 150 including a first sub-passage 151, a second sub-passage 152, a third sub-passage 153 and a fourth sub-passage 154, the first partition plate 140 including a fourth through hole 141 penetrating the first partition plate 140 in the longitudinal direction of the first collection pipe 100, and the fourth through hole 141 connects the second sub-passage 152 and the fourth passage 160.

[0098] The third sub-passage 153 is formed between the upper longitudinal end of the first member 610 and the first end cover 130 at the upper end of the first collection pipe 100, and the fourth sub-passage 154 is formed between the lower end of the first member 610 and the first partition plate 140.

[0099] In describing the present disclosure, the orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are orientations or positional relationships indicated based on the drawings, and are intended merely to explain and simplify the description of the present disclosure, and are not intended to indicate or imply that the devices or elements shown necessarily have a specific orientation or are constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present disclosure.

[0100] Additionally, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance and the number of technical features depicted. Thus, a feature qualified as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "plurality" means at least two, e.g., two, three, etc., unless otherwise specifically and explicitly limited.

[0101] In the present disclosure, unless otherwise specified and limited, the terms "attached", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, may be a fixed connection, may be a removable connection, may be integral, may be a mechanical connection, may be an electrical connection, may be a direct connection, may be an indirect connection through an intermediate medium, may be an internal communication between two elements, or may be an interactive relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present disclosure according to the specific situation.

[0102] In this disclosure, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact with each other, or that the first and second features are in indirect contact with each other through an intermediate medium. Also, a first feature being "above," "above," and "on the top surface" of a second feature may simply indicate that the first feature is directly above or diagonally above the second feature, or that the horizontal height of the first feature is higher than that of the second feature. A first feature being "below," "below," and "below" a second feature may simply indicate that the first feature is directly below or diagonally below the second feature, or that the horizontal height of the first feature is lower than that of the second feature.

[0103] In the present specification, a description that refers to terms such as "one embodiment," "several embodiments," "examples," "specific examples," or "several examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, general descriptions of the above terms do not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials, or advantages described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine or combine different embodiments or examples described in the present specification and features of different embodiments or examples, unless they conflict with each other.

[0104] Although the embodiments of the present disclosure have been shown and described above, it should be noted that the above embodiments are merely illustrative and should not be construed as limitations on the present disclosure. Those skilled in the art may change, modify, substitute, and alter the above embodiments within the scope of the present disclosure.

Claims

1. 1. A heat exchanger comprising: a first flow collecting pipe and a second flow collecting pipe, the first flow collecting pipe including a first peripheral wall and a first passage formed by being surrounded by the first peripheral wall; a plurality of heat exchange tubes, one end of each of the heat exchange tubes in the longitudinal direction being connected to the first collecting tube, the heat exchange tubes communicating with the first collecting tube and the second collecting tube, the plurality of heat exchange tubes being arranged at intervals in the longitudinal direction of the first collecting tube, and an angle between the longitudinal direction of the first collecting tube and a horizontal plane being greater than 0 degrees when the heat exchanger operates as an evaporator of a refrigerant; a first assembly located inside the first passage, the first assembly including a first member, the first passage including a first sub-passage and a second sub-passage, the first sub-passage being located on one side of the first member in a longitudinal direction of the heat exchange tube, and the second sub-passage being located on the other side of the first member in a longitudinal direction of the heat exchange tube; the first sub-passage communicates with the heat exchange tube, and at least a portion of one end of the heat exchange tube in the longitudinal direction is located within the first sub-passage; the first member includes a first side portion facing the first sub-passage, the first side portion includes a protruding portion located within the first sub-passage, a gap is present between the protruding portion and the first peripheral wall in a longitudinal direction of the heat exchange tube, and the protruding portion is multiple, the first passage further includes a third sub-passage and a fourth sub-passage, the third sub-passage communicating the first sub-passage with the second sub-passage, and the fourth sub-passage communicating the first sub-passage with the second sub-passage; the plurality of protrusions are arranged at intervals in the longitudinal direction of the first flow collecting tube, and at least one of the heat exchange tubes is located between two protrusions adjacent to each other in the longitudinal direction of the first flow collecting tube. A heat exchanger characterized by:

2. a minimum distance from the at least one heat exchange tube to the first side portion is d1, and a minimum distance in a longitudinal direction of the heat exchange tube between the two adjacent protrusions and an inner circumferential surface of the first circumferential wall surrounding the first sub-passage is d2, and d1 is greater than d2.

2. The heat exchanger according to claim 1 .

3. the first member includes a first through hole and a second through hole, the first through hole penetrates the first member in a longitudinal direction of the heat exchange tube to communicate the first sub-passage and the second sub-passage, the second through hole penetrates the first member in the longitudinal direction of the heat exchange tube to communicate the first sub-passage and the second sub-passage, the first through hole is located on one side of one of the protrusions in the longitudinal direction of the first flow collecting tube, and the second through hole is located on the other side of the protrusion in the longitudinal direction of the first flow collecting tube.

3. The heat exchanger according to claim 1 or 2.

4. A cross-sectional area of ​​the first through hole is smaller than a cross-sectional area of ​​the second through hole.

4. The heat exchanger according to claim 3.

5. A heat exchanger, comprising: a first flow collecting pipe and a second flow collecting pipe, the first flow collecting pipe including a first peripheral wall and a first passage formed by being surrounded by the first peripheral wall; a plurality of heat exchange tubes, one end of each of the heat exchange tubes in the longitudinal direction being connected to the first collecting tube, the heat exchange tubes communicating with the first collecting tube and the second collecting tube, the plurality of heat exchange tubes being arranged at intervals in the longitudinal direction of the first collecting tube, and an angle between the longitudinal direction of the first collecting tube and a horizontal plane being greater than 0 degrees when the heat exchanger operates as an evaporator of a refrigerant; a first assembly located inside the first passage, the first assembly including a first member, the first passage including a first sub-passage and a second sub-passage, the first sub-passage being located on one side of the first member in a longitudinal direction of the heat exchange tube, and the second sub-passage being located on the other side of the first member in a longitudinal direction of the heat exchange tube; the first sub-passage communicates with the heat exchange tube, and at least a portion of one end of the heat exchange tube in the longitudinal direction is located within the first sub-passage; the first member includes a first side portion facing the first sub-passage, the first side portion includes a protruding portion located within the first sub-passage, a gap is present between the protruding portion and the first peripheral wall in a longitudinal direction of the heat exchange tube, and the protruding portion is multiple, the first passage further includes a third sub-passage and a fourth sub-passage, the third sub-passage communicating the first sub-passage with the second sub-passage, and the fourth sub-passage communicating the first sub-passage with the second sub-passage; the first member includes a third through hole, at least two of the protrusions are arranged adjacent to each other in the longitudinal direction of the first flow collecting tube, the third through hole is located between the at least two of the protrusions arranged adjacent to each other, the third through hole penetrates the first member in the longitudinal direction of the heat exchange tube, and the third through hole is a plurality of holes; A heat exchanger comprising:

6. A heat exchanger, comprising: a first flow collecting pipe and a second flow collecting pipe, the first flow collecting pipe including a first peripheral wall and a first passage formed by being surrounded by the first peripheral wall; a plurality of heat exchange tubes, one end of each of the heat exchange tubes in the longitudinal direction being connected to the first collecting tube, the heat exchange tubes communicating with the first collecting tube and the second collecting tube, the plurality of heat exchange tubes being arranged at intervals in the longitudinal direction of the first collecting tube, and an angle between the longitudinal direction of the first collecting tube and a horizontal plane being greater than 0 degrees when the heat exchanger operates as an evaporator of a refrigerant; a first assembly located inside the first passage, the first assembly including a first member, the first passage including a first sub-passage and a second sub-passage, the first sub-passage being located on one side of the first member in a longitudinal direction of the heat exchange tube, and the second sub-passage being located on the other side of the first member in a longitudinal direction of the heat exchange tube; the first sub-passage communicates with the heat exchange tube, and at least a portion of one end of the heat exchange tube in the longitudinal direction is located within the first sub-passage; the first member includes a first side portion facing the first sub-passage, the first side portion includes a protruding portion located within the first sub-passage, a gap is present between the protruding portion and the first peripheral wall in a longitudinal direction of the heat exchange tube, and the protruding portion is multiple, the first passage further includes a third sub-passage and a fourth sub-passage, the third sub-passage communicating the first sub-passage with the second sub-passage, and the fourth sub-passage communicating the first sub-passage with the second sub-passage; the heat exchanger further includes a first partition plate, the first partition plate dividing the first passage into a third passage and a fourth passage, the third passage including the first sub-passage and the second sub-passage, the first partition plate including a fourth through-hole penetrating the first partition plate in a longitudinal direction of the first collecting pipe, the fourth through-hole connecting the second sub-passage and the fourth passage, A heat exchanger comprising:

7. the heat exchanger further includes a second member, the second member being located within the fourth passage, the second member dividing the fourth passage into a fifth sub-passage and a sixth sub-passage arranged in parallel in a longitudinal direction of the heat exchange tube, at least a portion of one longitudinal end of the heat exchange tube being located within the fifth sub-passage, the second member including a fifth through-hole penetrating the second member in the longitudinal direction of the heat exchange tube, the fifth through-hole connecting the fifth sub-passage and the sixth sub-passage, 7. The heat exchanger according to claim 6.

8. A heat exchanger, comprising: a first flow collecting pipe and a second flow collecting pipe, the first flow collecting pipe including a first peripheral wall and a first passage formed by being surrounded by the first peripheral wall; a plurality of heat exchange tubes, one end of each of the heat exchange tubes in the longitudinal direction being connected to the first collecting tube, the heat exchange tubes communicating with the first collecting tube and the second collecting tube, the plurality of heat exchange tubes being arranged at intervals in the longitudinal direction of the first collecting tube, and an angle between the longitudinal direction of the first collecting tube and a horizontal plane being greater than 0 degrees when the heat exchanger operates as an evaporator of a refrigerant; a first assembly located inside the first passage, the first assembly including a first member, the first passage including a first sub-passage and a second sub-passage, the first sub-passage being located on one side of the first member in a longitudinal direction of the heat exchange tube, and the second sub-passage being located on the other side of the first member in a longitudinal direction of the heat exchange tube; the first sub-passage communicates with the heat exchange tube, and at least a portion of one end of the heat exchange tube in the longitudinal direction is located within the first sub-passage; the first member includes a first side portion facing the first sub-passage, the first side portion includes a protruding portion located within the first sub-passage, a gap is present between the protruding portion and the first peripheral wall in a longitudinal direction of the heat exchange tube, and the protruding portion is multiple, the first passage further includes a third sub-passage and a fourth sub-passage, the third sub-passage communicating the first sub-passage with the second sub-passage, and the fourth sub-passage communicating the first sub-passage with the second sub-passage; the heat exchanger further includes a second partition plate, the second partition plate dividing the first sub-passage into a seventh sub-passage and an eighth sub-passage in a longitudinal direction of the first flow collecting tube, the second partition plate dividing the second sub-passage into a ninth sub-passage and a tenth sub-passage in the longitudinal direction of the first flow collecting tube, the second partition plate including a sixth through hole penetrating the second partition plate in the longitudinal direction of the first flow collecting tube, the sixth through hole connecting the ninth sub-passage and the tenth sub-passage, the first member including a seventh through hole penetrating the first member in the longitudinal direction of the heat exchange tube, the seventh through hole connecting the seventh sub-passage and the ninth sub-passage, and the first member further including an eighth through hole penetrating the first member in the longitudinal direction of the heat exchange tube, the eighth through hole connecting the eighth sub-passage and the tenth sub-passage. A heat exchanger comprising:

9. The heat exchanger further includes an inlet / outlet pipe, the inlet / outlet pipe includes a first inlet / outlet pipe and a second inlet / outlet pipe, the first inlet / outlet pipe and the second inlet / outlet pipe are connected to the second collecting pipe, or the first inlet / outlet pipe is connected to the first collecting pipe, and the second inlet / outlet pipe is connected to the second collecting pipe.

7. The heat exchanger according to claim 6.

10. A heat exchanger comprising: a first flow collecting pipe and a second flow collecting pipe, the first flow collecting pipe including a first peripheral wall and a first passage formed by being surrounded by the first peripheral wall; a plurality of heat exchange tubes, one end of each of the heat exchange tubes in the longitudinal direction being connected to the first collecting tube, the heat exchange tubes communicating with the first collecting tube and the second collecting tube, the plurality of heat exchange tubes being arranged at intervals in the longitudinal direction of the first collecting tube, and an angle between the longitudinal direction of the first collecting tube and a horizontal plane being greater than 0 degrees when the heat exchanger operates as an evaporator of a refrigerant; a first assembly located inside the first passage, the first assembly including a first member, the first passage including a first sub-passage and a second sub-passage, the first sub-passage being located on one side of the first member in a longitudinal direction of the heat exchange tube, and the second sub-passage being located on the other side of the first member in a longitudinal direction of the heat exchange tube; the first sub-passage communicates with the heat exchange tube, and at least a portion of one end of the heat exchange tube in the longitudinal direction is located within the first sub-passage; the first member includes a first side portion facing the first sub-passage, the first side portion includes a protruding portion located within the first sub-passage, a gap is present between the protruding portion and the first peripheral wall in a longitudinal direction of the heat exchange tube, and the protruding portion is multiple, the first passage further includes a third sub-passage and a fourth sub-passage, the third sub-passage communicating the first sub-passage with the second sub-passage, and the fourth sub-passage communicating the first sub-passage with the second sub-passage; The first assembly further includes a support plate, the support plate abutting against the first member at one side of the heat exchange tube in the longitudinal direction, and the support plate abutting against an inner circumferential surface of the first peripheral wall at the other side of the heat exchange tube in the longitudinal direction; The outer circumferential profile of the cross section of the heat exchange tube is substantially flattened, the first sub-passage, the second sub-passage, the third sub-passage, and the fourth sub-passage form at least one circulation passage through which a refrigerant circulates within the first passage; A heat exchanger comprising:

11. At least one of the protruding portions has an end that is away from the first member in the longitudinal direction of the first heat exchange tube and abuts against an inner circumferential surface of the first peripheral wall, and the protruding portion has a ninth through hole that penetrates the protruding portion in the longitudinal direction of the first flow collecting tube.

11. A heat exchanger according to claim 1, 5, 6, 8 or 10.

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