Heat exchange components, heat exchangers and air conditioning systems

Abstract

This application relates to the field of air conditioning equipment technology, and discloses a heat exchange component, a heat exchanger, and an air conditioning system. The heat exchange component includes multiple heat exchange channels arranged sequentially at intervals along the airflow direction when external airflow passes through the heat exchange component. The heat exchange component has multiple regions along the airflow direction, each region including at least one heat exchange channel. Along the airflow direction, the medium flow resistance in the heat exchange channels of the multiple regions increases progressively. The difficulty for the medium to enter the heat exchange channel increases along the airflow direction. Thus, the heat exchange channel in the upstream region can divert more medium, while the heat exchange channel in the downstream region can divert less medium. Since the temperature difference between the airflow and the medium in the downstream region is smaller than that in the upstream region, the increased medium flow in the upstream region is more conducive to heat exchange, thereby improving the heat exchange capacity of the heat exchange component.

Description

Technical Field

[0001] This application relates to the field of air conditioning equipment technology, and in particular to a heat exchange component, heat exchanger and air conditioning system. Background Technology

[0002] This section provides only background information relevant to this application and is not necessarily prior art.

[0003] The heat exchange capacity of a heat exchanger is a crucial indicator. Parallel flow heat exchangers (microchannel heat exchangers), with multiple heat exchange channels, achieve better heat exchange effects and are increasingly used in air conditioning and refrigeration equipment. How to further improve the heat exchange efficiency of multichannel heat exchangers is currently a key focus of research and development. Summary of the Invention

[0004] The purpose of this application is to at least address the issue of needing to further improve the heat exchange capacity of existing multi-channel heat exchangers. This purpose is achieved through the following technical solution:

[0005] The first aspect of this application provides a heat exchange component, the heat exchange component including a plurality of heat exchange channels arranged sequentially at intervals along the airflow direction when an external airflow passes through the heat exchange component;

[0006] Along the airflow direction, the heat exchange component is provided with multiple regions, each region including at least one heat exchange channel, and the medium flow resistance in the heat exchange channels of the multiple regions increases progressively.

[0007] According to the heat exchange component of this application, the flow rate of the heat exchange channels in different regions is controlled by varying the flow resistance of the medium within the heat exchange channels. Specifically, the flow resistance of the medium in the heat exchange channels increases progressively along the airflow direction, making it more difficult for the medium to enter the heat exchange channels. Thus, in the airflow direction, the upstream heat exchange channel can accommodate a larger volume of medium, while the downstream heat exchange channel can accommodate a smaller volume. Since the airflow exchanges heat with the medium flowing in the upstream region, the temperature difference between the airflow and the medium in the downstream region is smaller than that in the upstream region. The larger volume of medium flowing in the upstream region is more conducive to heat exchange, thereby improving the heat exchange capacity of the heat exchange component.

[0008] In addition, the heat exchange component according to this application may also have the following additional technical features:

[0009] In some embodiments of this application, the medium flow resistance in the plurality of heat exchange channels increases along the airflow direction.

[0010] In some embodiments of this application, along the airflow direction, the upstream region of the plurality of regions is a first region, and the heat exchange channel in the regions other than the first region of the plurality of regions is provided with a flow-blocking part;

[0011] Alternatively, each of the heat exchange channels in the multiple regions may be provided with a flow-blocking section, which extends axially along the corresponding heat exchange channel.

[0012] In some embodiments of this application, the flow-blocking part is a protrusion provided on the inner wall surface of the heat exchange channel;

[0013] Alternatively, the flow-blocking part may be a groove provided on the inner wall surface of the heat exchange channel.

[0014] In some embodiments of this application, the heat exchange channel has a first cross-section along a direction perpendicular to the axial direction of the heat exchange channel, and the flow-blocking portion has a second cross-section. Within the same heat exchange channel, the ratio of the sum of the areas of the second cross-sections of all the flow-blocking portions to the area of ​​the corresponding first cross-section is the flow-blocking ratio.

[0015] Along the airflow direction, in two adjacent regions where the flow obstruction is provided, the heat exchange channel in the upstream region is the first heat exchange channel, and the heat exchange channel in the downstream region is the second heat exchange channel. The flow obstruction ratio corresponding to the first heat exchange channel is less than the flow obstruction ratio corresponding to the second heat exchange channel.

[0016] In some embodiments of this application, the flow-blocking part in the first heat exchange channel is a first flow-blocking part, the flow-blocking part in the second heat exchange channel is a second flow-blocking part, and the area of ​​the first cross-section of the first heat exchange channel is the same as the area of ​​the first cross-section of the second heat exchange channel.

[0017] The number of the first flow-blocking parts is equal to or less than the number of the second flow-blocking parts, and the area of ​​the second cross-section of the first flow-blocking part is less than the area of ​​the second cross-section of the second flow-blocking part; or the area of ​​the second cross-section of the first flow-blocking part is less than or equal to the area of ​​the second cross-section of the second flow-blocking part, and the number of the first flow-blocking parts is less than the number of the second flow-blocking parts.

[0018] In some embodiments of this application, the number of the first flow-blocking portion is the same as the number of the second flow-blocking portion;

[0019] Both the first flow-blocking portion and the second flow-blocking portion are protruding portions. The first flow-blocking portion protrudes from the inner wall surface of the first heat exchange channel by a first dimension, and the second flow-blocking portion protrudes from the inner wall surface of the second heat exchange channel by a second dimension, wherein the first dimension is smaller than the second dimension; or, both the first flow-blocking portion and the second flow-blocking portion are recessed portions. The first flow-blocking portion is recessed from the inner wall surface of the first heat exchange channel by a third dimension, and the second flow-blocking portion protrudes from the inner wall surface of the second heat exchange channel by a fourth dimension, wherein the third dimension is smaller than the fourth dimension.

[0020] In some embodiments of this application, the flow-blocking portion in the first heat exchange channel is a first flow-blocking portion, the flow-blocking portion in the second heat exchange channel is a second flow-blocking portion, the sum of the areas of the second cross sections of all the first flow-blocking portions is a first area, the sum of the areas of the second cross sections of all the second flow-blocking portions is a second area, and the first area is the same as the second area.

[0021] The area of ​​the first cross-section of the first heat exchange channel is greater than the area of ​​the first cross-section of the second heat exchange channel.

[0022] In some embodiments of this application, a plurality of flow-blocking sections are provided in the same heat exchange channel, and the plurality of flow-blocking sections are arranged at intervals along the circumference of the heat exchange channel.

[0023] In some embodiments of this application, the second cross-section is square or triangular.

[0024] In some embodiments of this application, the heat exchange component includes a heat exchange tube, and the heat exchange tube forms a plurality of heat exchange channels, which are arranged in a straight line.

[0025] In some embodiments of this application, there are multiple heat exchange tubes, which are arranged at intervals along a first direction, which is perpendicular to the airflow direction and perpendicular to the axial direction of the heat exchange channel.

[0026] The second aspect of this application provides a heat exchanger that includes the heat exchange component proposed in the first aspect of this application.

[0027] The heat exchanger of this application has at least the beneficial effects of the heat exchange component proposed in the first aspect of this application.

[0028] The third aspect of this application proposes an air conditioning system, wherein the heat exchanger includes the heat exchanger proposed in the second aspect of this application.

[0029] The air conditioning system of this application has at least the beneficial effects of the heat exchange component proposed in the first aspect of this application. Attached Figure Description

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0031] Figure 1 A schematic diagram of a heat exchanger according to an embodiment of this application is shown.

[0032] Figure 2 schematically shown Figure 1 AA section view;

[0033] Figure 3 A schematic diagram of a heat exchange tube according to an embodiment of this application is shown.

[0034] Figure 4 A schematic diagram of another heat exchange tube according to an embodiment of this application is shown;

[0035] Figure 5 A schematic diagram of another heat exchange tube according to an embodiment of this application is shown;

[0036] Figure 6 schematically shown Figure 1 Side view;

[0037] Figure 7 schematically shown Figure 6 BB cross-sectional view.

[0038] The attached figures are labeled as follows:

[0039] 100. Heat exchange component; 101. First zone; 102. Second zone; 103. Third zone; 104. Fourth zone; 105. Fifth zone; 106. Sixth zone; 107. Seventh zone; 110. Heat exchange tube; 120. Heat exchange channel; 121. Inner wall surface; 130. Flow obstruction section;

[0040] 200. Manifold; 201. Outlet; 202. Inlet; 210. First manifold; 211. First flow collection channel; 212. Second flow collection channel; 213. Separating sealing plate; 220. Second manifold; 221. Third flow collection channel; 230. Flow divider;

[0041] X, airflow direction; Y, medium flow direction; Z, primary direction. Detailed Implementation

[0042] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0043] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0044] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0045] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0046] like Figures 1 to 7 As shown, this embodiment provides a heat exchange component 100, which includes a plurality of heat exchange channels 120. Along the airflow direction (X) when the external airflow passes through the heat exchange component, the plurality of heat exchange channels 120 are arranged sequentially at intervals along the airflow direction X. The heat exchange component 100 is provided with a plurality of regions along the airflow direction X, and each region includes at least one heat exchange channel 120. Along the airflow direction X, the medium flow resistance in the heat exchange channels 120 of the plurality of regions increases progressively.

[0047] The heat exchange component 100 is used to complete the heat exchange between the medium and the airflow. The heat exchange component 100 is usually used in a heat exchanger, and the medium flowing inside the heat exchange component 100 is a refrigerant. The heat exchanger can be used as a condenser or evaporator in an air conditioning system. In actual use environments, the heat exchanger will be equipped with corresponding airflow drive components (specifically, a fan, a blower assembly, etc.) to improve heat exchange efficiency. The direction in which the airflow is driven by the airflow drive components to flow along the surface of the heat exchanger is the airflow direction X.

[0048] In this embodiment, the heat exchange component 100 is used in an evaporation process, that is, the heat exchanger is used as an evaporator, as an example for the following detailed explanation.

[0049] In this embodiment, "multiple" refers to two or more. For example, multiple heat exchange channels 120 can be two, three, or more heat exchange channels 120; multiple regions can be two, three, or more regions. Any heat exchange channel 120 within a region can be one or more of the multiple heat exchange channels 120, meaning that the multiple heat exchange channels 120 are divided into multiple regions along the airflow direction X.

[0050] Multiple heat exchange channels 120 are arranged in parallel, that is, heat exchange channels 120 in multiple areas are arranged in parallel. The medium flowing through the heat exchange component 100 flows in through the inlet of the heat exchange channel 120 and then flows out through the outlet of the heat exchange channel 120. For example Figures 3 to 5 As shown, in one specific implementation, multiple heat exchange channels 120 are arranged in parallel, forming a straight line. The lengths of the multiple heat exchange channels 120 are the same, with one end aligned and the other end aligned. The inlets and outlets of the multiple heat exchange channels 120 are located at the same end, and the inlets and outlets are located at opposite ends of the heat exchange channels 120. Figure 1 As shown, the axial direction of each heat exchange channel 120 (i.e., the flow direction Y of the medium) is arranged in the left-right direction, and multiple heat exchange channels 120 are arranged in a direction perpendicular to the plane of the paper. Figure 1 The direction perpendicular to the paper is also Figures 2 to 5 The heat exchange channels are arranged sequentially in the left and right directions. The left and right ends of the multiple heat exchange channels are respectively provided with manifolds 200, and the two ends of the multiple heat exchange channels are respectively connected to two manifolds 200. The medium flows from one of the manifolds 200 to the multiple heat exchange channels 120, and then flows through the multiple heat exchange channels 120 to another manifold 200, and finally flows out of the heat exchange component 100 into the next device.

[0051] In one implementation, the heat exchange component 100 includes a heat exchange tube 110, and a plurality of heat exchange channels 120 are formed inside the heat exchange tube 110, and the plurality of heat exchange channels 120 are arranged in a straight line.

[0052] like Figures 2 to 5 As shown, the heat exchange tube 110 is a flat tube, which is in the shape of a planar plate, and both ends along the airflow direction X are arc-shaped surfaces. The heat exchange channel 120 runs through the opposite ends of the heat exchange tube 110 in a direction perpendicular to the airflow direction X.

[0053] The heat exchange tubes 110 can be one or more. When there are multiple heat exchange tubes 110, all heat exchange tubes 110 are spaced apart from each other along a first direction Z, which is perpendicular to the airflow direction X and perpendicular to the axis of the heat exchange channel 120. Each heat exchange tube 110 can be configured with the same structure. In a specific embodiment of this invention, each heat exchange tube 110 has multiple (specifically seven) heat exchange channels 120.

[0054] It should be noted that the comparison of the medium flow resistance in the multiple heat exchange channels 120 or multiple regions involved in this application is a comparison between multiple heat exchange channels 120 arranged sequentially along the airflow direction X within the same heat exchange tube 110. Accordingly, the multiple heat exchange channels 120 mentioned below refer to multiple heat exchange channels 120 of the same heat exchange tube 110.

[0055] For ease of description, the manifolds 200 at both ends of the heat exchange channel 120 are defined as the first manifold 210 and the second manifold 220, respectively.

[0056] The heat exchange component 100 can be a single-pass heat exchange component 100. In the single-pass heat exchange component 100, the first manifold 210 is provided with a liquid inlet 202 and the second manifold 220 is provided with a liquid outlet 201. The medium flows into the first manifold 210 from the liquid inlet 202, then flows to all heat exchange channels 120 of all heat exchange tubes 110, and then flows into the second manifold 220, and flows to the next device via the liquid outlet 201.

[0057] The heat exchange component 100 can also be a multi-pass heat exchange component 100. In this case, multiple heat exchange tubes 110 are sequentially divided into multiple heat exchange tube groups along the first direction Z. Each heat exchange tube group 110 includes one or more heat exchange tubes 110, and one heat exchange tube group 110 corresponds to one pass. For example... Figure 6 and Figure 7 (The arrow indicates the flow direction Y of the medium) As shown, taking a two-process heat exchange component 100 as an example, a dividing sealing plate 213 is provided inside the first manifold 210. The dividing sealing plate 213 divides the first manifold 210 into an independent first collecting channel 211 and a second collecting channel 212. The first manifold 210 is provided with an inlet 202 corresponding to the first collecting channel 211, and the first manifold 210 is provided with an outlet 201 corresponding to the second collecting channel 212. A third collecting channel 221 is provided inside the second manifold 220. Among them, the multiple heat exchange tubes 110 below the dividing sealing plate 213 form a first heat exchange tube group 110, and the multiple heat exchange tubes 110 above the dividing sealing plate 213 form a second heat exchange tube group 110. After the medium flows into the first collection channel 211 of the first manifold 210 from the liquid inlet 202, it flows to the multiple heat exchange channels 120 of the multiple heat exchange tubes 110 of the first heat exchange tube group 110, and flows out through the multiple heat exchange channels 120 of the first heat exchange tube group 110 to the third collection channel 221; then it flows from the third collection channel 221 to the multiple heat exchange channels 120 of the multiple heat exchange tubes 110 of the second heat exchange tube group 110, and flows out through the multiple heat exchange channels 120 of the first heat exchange tube group 110 to the second collection channel 212, and finally flows to the next device through the liquid outlet 201.

[0058] According to the heat exchange component 100 of this embodiment, the flow rate of the heat exchange channels 120 in different regions is controlled by the different flow resistance of the medium in the heat exchange channels 120 in multiple regions. Specifically, along the airflow direction X, the flow resistance of the medium in the heat exchange channels 120 in multiple regions increases progressively, making it more difficult for the medium to enter the heat exchange channels 120 along the airflow direction X. Thus, in the airflow direction X, the heat exchange channels 120 in the upstream region can divert more medium, while the heat exchange channels 120 in the downstream region can divert less medium. Since the airflow exchanges heat with the medium flowing in the upstream region, the temperature difference between the airflow and the medium in the downstream region is smaller than that in the upstream region. The greater amount of medium flowing in the upstream region is more conducive to heat exchange, thereby improving the heat exchange capacity of the heat exchange component 100.

[0059] In this embodiment, when each region includes two or more heat exchange channels 120, the medium flow resistance of the heat exchange channels 120 in the same region can be configured to be the same, and the number of heat exchange channels 120 in multiple regions can be the same or different. For example Figure 3 As shown, in a specific embodiment, along the airflow direction X, there are six regions: a first region 101, a second region 102, a third region 103, a fourth region 104, a fifth region 105, and a sixth region 106. Each of the first, second, third, fourth, and sixth regions includes one heat exchange channel 120, and the fifth region 105 includes two heat exchange channels 120. The medium flow resistance of the heat exchange channels 120 in the first, second, third, fourth, fifth, and sixth regions 101, 102, 103, 104, 105, and 106 increases sequentially, while the medium flow resistance of the two heat exchange channels 120 in the fifth region 105 is the same. When each region includes one heat exchange channel 120, the medium flow resistance within the heat exchange channels 120 of multiple regions increases, which is equivalent to the medium flow resistance within the multiple heat exchange channels 120 increasing along the airflow direction X. Figure 4 and Figure 5 As shown, along the airflow direction X, there are seven regions, specifically the first region 101, the second region 102, the third region 103, the fourth region 104, the fifth region 105, the sixth region 106, and the seventh region 107. Each of the first region 101, the second region 102, the third region 103, the fourth region 104, the fifth region 105, and the seventh region 107 includes a heat exchange channel 120. The medium flow resistance of the heat exchange channels 120 in the first region 101, the second region 102, the third region 103, the fourth region 104, the fifth region 105, the sixth region 106, and the seventh region 107 increases sequentially.

[0060] In this embodiment, the difference in medium flow resistance within the multiple heat exchange channels 120 can be achieved through various means. For example, the multiple heat exchange channels 120 can be arranged with equal diameters, and each heat exchange channel 120 can be provided with a baffle plate with through holes. The medium flow area formed by the through holes of the baffle plates in the multiple heat exchange channels 120 segments is different, and the heat exchange channel 120 corresponding to the baffle plate with a smaller medium flow area has a larger medium flow resistance. As another example, the multiple heat exchange channels 120 can be arranged with equal diameters, and the inner wall of each heat exchange channel 120 can be provided with different roughness. The heat exchange channel 120 with higher roughness has a larger medium flow resistance.

[0061] In one specific embodiment of this method, the flow resistance of the medium within the multiple heat exchange channels 120 is differentiated by providing a flow-blocking section 130 within the heat exchange channel 120. Specifically, as shown... Figures 3 to 5 As shown, the flow-blocking portion 130 is configured as a protrusion protruding inward relative to the inner wall surface 121 of the heat exchange channel 120, and the protrusion extends axially along the heat exchange channel 120. The flow-blocking portion 130 may also be configured as a groove recessed outward relative to the inner wall surface 121 of the heat exchange channel 120, and the groove extends axially along the heat exchange channel 120.

[0062] It is understandable that the flow-blocking portion 130 formed by the protrusion or groove can also enhance heat transfer, thereby improving the heat transfer capacity of the overall heat exchange component 100.

[0063] like Figures 3 to 5 As shown, flow-blocking sections 130 can be provided in all heat exchange channels 120 within multiple regions. It should also be noted that, along the airflow direction X, the heat exchange channel 120 located in the upstream region should have the least resistance to medium flow; therefore, flow-blocking sections 130 may not be provided in this region. For ease of description, the upstream region among the multiple regions is designated as the first region 101. That is, the heat exchange channel 120 within the first region 101 does not contain flow-blocking sections 130, while all heat exchange channels 120 in all regions other than the first region 101 contain flow-blocking sections 130.

[0064] The flow-blocking portion 130 formed by the protrusion or groove can be disposed within a portion of the axial direction of the heat exchange channel 120, or it can extend through both ends of the heat exchange channel 120. The protrusion or groove forms an uneven structure on the inner wall surface 121 of the heat exchange channel 120, which increases the flow resistance of the medium. By providing different numbers or areas of flow-blocking portions 130, different flow-blocking effects can be achieved on the medium.

[0065] Specifically, along a direction perpendicular to the axial direction of the heat exchange channel 120 (i.e., perpendicular to the flow direction Y of the medium), the heat exchange channel 120 has a first cross-section, and the flow-blocking section 130 has a second cross-section. For ease of description, the ratio of the sum of the areas of the second cross-sections of all flow-blocking sections 130 within the same heat exchange channel 120 to the area of ​​the corresponding first cross-section is defined as the flow-blocking ratio. Along the airflow flow direction X, in two adjacent regions where flow-blocking sections 130 are provided, the heat exchange channel 120 in the upstream region is defined as the first heat exchange channel, and the heat exchange channel 120 in the downstream region is defined as the second heat exchange channel. The flow-blocking section 130 in the first heat exchange channel is the first flow-blocking section, and the flow-blocking section 130 in the second heat exchange channel is the second flow-blocking section. The flow-blocking ratio corresponding to the first heat exchange channel is less than the flow-blocking ratio corresponding to the second heat exchange channel.

[0066] It is understandable that the first heat exchange channel and the second heat exchange channel are heat exchange channels 120 in two adjacent regions, for example, as... Figures 3 to 5 As shown, the second region 102 and the third region 103 are adjacent. When comparing the two, the heat exchange channel 120 in the second region 102 forms the first heat exchange channel, and the heat exchange channel 120 in the third region 103 forms the second heat exchange channel.

[0067] Typically, multiple heat exchange channels 120 are manufactured from the same material, and the flow-blocking portion 130 is a recessed or protruding part of the heat exchange channel 120, also made of the same material. When the first cross-sectional area of ​​the multiple heat exchange channels 120 is the same, and the second cross-sectional area of ​​the various flow-blocking portions 130 is the same, the more flow-blocking portions 130 there are within the heat exchange channel 120, the greater the flow resistance of the medium. See [reference needed] for details. Figure 3 The second region 102 to the fifth region 105, and Figure 4 and Figure 5 From the second region 102 to the sixth region 106, the increasing number of regions along the airflow direction X achieves a sequential increase in the medium flow resistance of the heat exchange channels 120. When the areas of the first cross-sections of the multiple heat exchange channels 120 are the same, and the number of flow-blocking parts 130 within each heat exchange channel 120 is the same, the larger the area of ​​the second cross-section of a single flow-blocking part 130 within the heat exchange channel 120, the greater the corresponding medium flow resistance within the heat exchange channel 120.

[0068] The area of ​​the first cross-section of the heat exchange channel 120 can also affect the flow resistance of the medium. Specifically, the flow-blocking part in the first heat exchange channel is the first flow-blocking part, and the flow-blocking part in the second heat exchange channel is the second flow-blocking part. The sum of the areas of the second cross-sections of all the first flow-blocking parts is the first area, and the sum of the areas of the second cross-sections of all the second flow-blocking parts is the second area. The first area and the second area are the same. The area of ​​the first cross-section of the first heat exchange channel is larger than the area of ​​the first cross-section of the second heat exchange channel.

[0069] Wherein, the sum of the areas of the second cross sections of all the first flow-blocking parts, i.e., the first area, is the sum of the areas of the second cross sections of all the flow-blocking parts within a first heat exchange channel; the sum of the areas of the second cross sections of all the second flow-blocking parts, i.e., the second area, is the sum of the areas of the second cross sections of all the flow-blocking parts within a second heat exchange channel.

[0070] In detail, when the area of ​​the second cross-section of all flow-blocking portions 130 in all heat exchange channels 120 is the same, and the number of flow-blocking portions 130 in each heat exchange channel 120 is the same, the smaller the area of ​​the first cross-section of the heat exchange channel 120, the smaller the resistance to medium flow. See details below. Figure 3 As shown, the area of ​​the first cross-section of the heat exchange channel 120 in the sixth region 106 is smaller than that of the first cross-section of the heat exchange channel 120 in the fifth region 105, the fourth region 104, and the third region 103. Even with the same flow-blocking portion 130 as that in the heat exchange channel 120 of the third region 103, the medium flow resistance in the heat exchange channel 120 of the sixth region 106 is still relatively high. Furthermore, even though the flow-blocking portions 130 in the heat exchange channels 120 of the fifth region 105 and the fourth region 104 are more numerous than those in the heat exchange channel 120 of the sixth region 106, the medium flow resistance in the heat exchange channel 120 of the sixth region 106 is still the greatest because the area of ​​the first cross-section of the heat exchange channel 120 in the sixth region 106 is smaller than that in the fifth region 105 or the fourth region 104.

[0071] It should be noted that, Figure 4 The medium flow resistance in the seventh region 107 is mainly due to the fact that the area of ​​the first cross-section of the heat exchange channel 120 in the seventh region 107 is smaller than the area of ​​the first cross-section of the heat exchange channel 120 in the second region 102, the third region 103, the fourth region 104, the fifth region 105, or the sixth region 106. Figure 5 The medium flow resistance in the seventh region 107 is mainly due to the fact that the area of ​​the first cross-section of the heat exchange channel 120 in the seventh region 107 is smaller than the area of ​​the first cross-section of the heat exchange channel 120 in the sixth region 106.

[0072] It should also be noted that when the area of ​​the first cross-section of the first heat exchange channel is the same as that of the first cross-section of the second heat exchange channel, the number of first flow-blocking parts is equal to or less than the number of second flow-blocking parts, and the area of ​​the second cross-section of the first flow-blocking part is less than the area of ​​the second cross-section of the second flow-blocking part, all of these conditions can satisfy the requirement that the medium flow resistance in the first heat exchange channel is less than that in the second heat exchange channel; or the area of ​​the second cross-section of the first flow-blocking part is less than or equal to the area of ​​the second cross-section of the second flow-blocking part, and the number of first flow-blocking parts is less than the number of second flow-blocking parts, all of these conditions can satisfy the requirement that the medium flow resistance in the first heat exchange channel is less than that in the second heat exchange channel. In other cases, a smaller number of flow-blocking parts 130, with each flow-blocking part 130 having a larger second cross-sectional area, can also achieve a larger medium flow resistance in the corresponding heat exchange channel 120; or, when the area of ​​the second cross-section of each flow-blocking part 130 is small, a larger number of flow-blocking parts 130 can also achieve a larger medium flow resistance in the corresponding heat exchange channel 120.

[0073] In one specific implementation, the difference in the second cross-section of a single flow-blocking portion 130 is achieved through the height difference of the protrusion or the groove.

[0074] Specifically, in one implementation, both the first and second flow-blocking portions are protruding portions. The protrusion of the first flow-blocking portion relative to the inner wall surface 121 of the first heat exchange channel is a first dimension, and the protrusion of the second flow-blocking portion relative to the inner wall surface 121 of the second heat exchange channel is a second dimension, where the first dimension is smaller than the second dimension. In another implementation, both the first and second flow-blocking portions are recessed portions. The recess of the first flow-blocking portion relative to the inner wall surface 121 of the first heat exchange channel is a third dimension, and the protrusion of the second flow-blocking portion relative to the inner wall surface 121 of the second heat exchange channel is a fourth dimension, where the third dimension is smaller than the fourth dimension.

[0075] Along the direction perpendicular to the axial direction of the heat exchange channel 120, the distance between the first flow-blocking part and the inner wall surface 121 of the first heat exchange channel is the first height, and the distance between the second flow-blocking part and the inner wall surface 121 of the second heat exchange channel is the second height; the first height is less than the second height.

[0076] The specific description will still focus on the second region 102 and the third region 103. The first flow-blocking section is the flow-blocking section 130 of the heat exchange channel 120 in the second region 102, and the second flow-blocking section is the flow-blocking section 130 of the heat exchange channel 120 in the third region 103. When the first flow-blocking section is a protrusion, the first height is the protrusion height of the first flow-blocking section; when the first flow-blocking section is a groove, the first height is the groove depth of the first flow-blocking section. When the second flow-blocking section is a protrusion, the second height is the protrusion height of the second flow-blocking section; when the second flow-blocking section is a groove, the second height is the groove depth of the second flow-blocking section. The width of the first and second flow-blocking sections (e.g., 3 to...) Figure 4 (The left and right directions shown are the width direction) indicates that the higher the height, the greater the resistance to medium flow.

[0077] In this embodiment, multiple flow-blocking sections 130 are provided in the same heat exchange channel 120, and the multiple flow-blocking sections 130 are arranged at intervals along the circumference of the heat exchange channel 120.

[0078] Specifically, such as Figures 3 to 5 As shown, the multiple flow-blocking sections 130 can be arranged in any manner. In the case of the heat exchange tube 110 in this embodiment, which is a flat tube, each heat exchange channel 120 has two parallel inner surfaces along the airflow direction X. Typically, flow-blocking sections 130 are provided on opposite sides of the inner surfaces of the heat exchange channel 120. One flow-blocking section 130 is defined as the third flow-blocking section 130, and the other flow-blocking section 130 is defined as the fourth flow-blocking section 130. The third and fourth flow-blocking sections 130 can be arranged opposite each other or staggered.

[0079] It should be noted that in this embodiment, a flat tube is used as the heat exchange tube 110. In the heat exchange channel 120 formed by the flat tube, the five heat exchange channels 120 in the middle are all rectangular, and the two heat exchange channels 120 at both ends are also formed as arc surfaces due to the arc side of the flat tube. Accordingly, the area of ​​the first cross-section of the two heat exchange channels 120 at both ends is smaller than the area of ​​the first cross-section of the five heat exchange channels 120 in the middle.

[0080] The second cross-section of the flow-blocking portion 130 in this embodiment can be of any shape. For ease of processing, the second cross-section can be set to a square shape (e.g., Figure 3 and Figure 4 (as shown) or triangle (such as) Figure 5 (As shown).

[0081] In summary, the heat exchange component 100 of this embodiment controls the flow rate of each heat exchange channel 120 by setting different flow-blocking parts 130, etc., and the flow-blocking parts 130 can also enhance heat exchange, thereby improving the overall heat exchange capacity. Furthermore, the heat exchange component 100 of this embodiment allows for adjustable liquid distribution between the heat exchange channels 120 inside the heat exchange tube 110 (e.g., a flat tube), improving the heat exchange capacity and system energy efficiency of the heat exchange component 100. Moreover, due to the simple structure of the heat exchange channel 120, the production difficulty and equipment cost of the heat exchange tube 110 (flat tube) are reduced, and the service life of the manufacturing mold is extended.

[0082] This embodiment also provides a heat exchanger, including the heat exchange component 100 of any of the above embodiments provided in this embodiment.

[0083] like Figure 1 , Figure 6 and Figure 7 As shown, the heat exchanger also includes manifolds 200, namely a first manifold 210 and a second manifold 220. A heat exchange component 100 is disposed between the first manifold 210 and the second manifold 220. Multiple heat exchange tubes 110, each having a heat exchange channel 120, have both ends connected to the first manifold 210 and the second manifold 220. Specifically, the connection between the heat exchange component 100 and the first manifold 210 and the second manifold 220, as well as the medium flow, can be referred to the description of the heat exchange component 100 in this embodiment.

[0084] Furthermore, flow dividers 230 with through holes can be installed in the first manifold 210 and the second manifold 220 to further optimize the medium flow distribution among the multiple heat exchange tubes 110. Specifically, taking the heat exchanger as an example of evaporation operation, when the flow dividers 230 are installed in the manifolds 200 corresponding to the inlets of the multiple heat exchange tubes 110, the medium at the liquid inlet 202 is usually in both gaseous and liquid states. The flow dividers 230 can accelerate the medium and make the gas-liquid mixing more uniform, so that the medium flows into the multiple heat exchange tubes 110 more evenly, thereby improving the liquid distribution uniformity of the heat exchanger and improving the heat exchange effect of the heat exchanger. When the flow divider 230 is installed in the manifold 200 corresponding to the outlet of multiple heat exchange tubes 110, the flow divider 230 can adjust the medium flow resistance at the outlet, thereby adjusting the medium flow resistance at the outlet of each heat exchange channel 120 and realizing the flow rate regulation of the medium flowing through multiple heat exchange channels 120. Furthermore, the proportion of gaseous medium in the total medium is higher than that at the inlet. Thus, the flow pressure drop in the manifold 200 connected to the outlet of the heat exchange channel 120 is greater than that at the inlet. Placing the flow divider 230 in the manifold 200 corresponding to the outlet of the heat exchange channel 120 has a greater effect on the pressure drop regulation, thereby achieving a larger flow rate regulation range and making it easier to regulate the flow rate of each heat exchange channel 120.

[0085] The heat exchanger of this embodiment has the same beneficial effects as the heat exchange component 100 provided in this embodiment.

[0086] This embodiment also provides an air conditioning system, including the heat exchanger proposed in this embodiment.

[0087] Specifically, the heat exchanger can be used as the evaporator of the air conditioning system, which also includes refrigeration components such as compressors and condensers.

[0088] The air conditioning system of this embodiment has the same beneficial effects as the heat exchanger proposed in this embodiment.

[0089] This embodiment also provides an air conditioning system, including the heat exchanger proposed in this embodiment.

[0090] Specifically, the heat exchanger can be used as the evaporator of the air conditioning system, which also includes components such as the compressor, condenser, and expansion valve.

[0091] The air conditioning system of this embodiment has the same beneficial effects as the heat exchanger proposed in this embodiment.

[0092] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A heat exchange component, characterized in that, The heat exchange component (100) includes a plurality of heat exchange channels (120), which are arranged sequentially at intervals along the airflow direction (X) when the external airflow passes through the heat exchange component. Along the airflow direction (X), the heat exchange member (100) is provided with multiple regions, each region including at least one heat exchange channel (120), and the medium flow resistance in the heat exchange channel (120) of the multiple regions increases progressively; Along the airflow direction (X), the upstream region of the plurality of regions is the first region (101), and the heat exchange channels (120) in the remaining regions of the plurality of regions other than the first region (101) are provided with flow-blocking parts (130); or the heat exchange channels (120) in the plurality of regions are all provided with flow-blocking parts (130), and the flow-blocking parts (130) extend along the axial direction of the corresponding heat exchange channels (120); The flow-blocking part (130) is a protrusion provided on the inner wall surface (121) of the heat exchange channel (120), or the flow-blocking part (130) is a groove provided on the inner wall surface (121) of the heat exchange channel (120). The flow-blocking part (130) makes the inner wall surface of the heat exchange channel (120) form an uneven structure, which increases the flow resistance of the medium. By providing different numbers or different areas of the flow-blocking parts (130), different flow-blocking effects can be achieved on the medium.

2. The heat exchange component according to claim 1, characterized in that, Along the airflow direction (X), the medium flow resistance within the plurality of heat exchange channels (120) increases.

3. The heat exchange component according to claim 1, characterized in that, Along a direction perpendicular to the axial direction of the heat exchange channel (120), the heat exchange channel (120) has a first cross-section, and the flow-blocking part (130) has a second cross-section. Within the same heat exchange channel (120), the ratio of the sum of the areas of the second cross-sections of all the flow-blocking parts (130) to the area of ​​the corresponding first cross-section is the flow-blocking ratio. Along the airflow direction (X), in two adjacent regions where the flow obstruction section (130) is provided, the heat exchange channel (120) in the upstream region is the first heat exchange channel, and the heat exchange channel (120) in the downstream region is the second heat exchange channel. The flow obstruction ratio corresponding to the first heat exchange channel is less than the flow obstruction ratio corresponding to the second heat exchange channel.

4. The heat exchange component according to claim 3, characterized in that, The flow-blocking part (130) in the first heat exchange channel is a first flow-blocking part, and the flow-blocking part (130) in the second heat exchange channel is a second flow-blocking part. The area of ​​the first cross-section of the first heat exchange channel is the same as the area of ​​the first cross-section of the second heat exchange channel. The number of the first flow-blocking parts is equal to or less than the number of the second flow-blocking parts, and the area of ​​the second cross-section of the first flow-blocking part is less than the area of ​​the second cross-section of the second flow-blocking part; or the area of ​​the second cross-section of the first flow-blocking part is less than or equal to the area of ​​the second cross-section of the second flow-blocking part, and the number of the first flow-blocking parts is less than the number of the second flow-blocking parts.

5. The heat exchange component according to claim 4, characterized in that, The number of the first flow-blocking section is the same as the number of the second flow-blocking section; Both the first flow-blocking part and the second flow-blocking part are protruding parts. The protrusion of the first flow-blocking part relative to the inner wall surface (121) of the first heat exchange channel is a first dimension, and the protrusion of the second flow-blocking part relative to the inner wall surface (121) of the second heat exchange channel is a second dimension. The first dimension is smaller than the second dimension. Alternatively, both the first flow-blocking part and the second flow-blocking part are recessed parts. The recess of the first flow-blocking part relative to the inner wall surface (121) of the first heat exchange channel is a third dimension, and the recess of the second flow-blocking part relative to the inner wall surface (121) of the second heat exchange channel is a fourth dimension. The third dimension is smaller than the fourth dimension.

6. The heat exchange component according to claim 3, characterized in that, The flow-blocking part (130) in the first heat exchange channel is the first flow-blocking part, and the flow-blocking part (130) in the second heat exchange channel is the second flow-blocking part. The sum of the areas of the second cross sections of all the first flow-blocking parts is the first area, and the sum of the areas of the second cross sections of all the second flow-blocking parts is the second area. The first area and the second area are the same. The area of ​​the first cross-section of the first heat exchange channel is greater than the area of ​​the first cross-section of the second heat exchange channel.

7. The heat exchange component according to any one of claims 1-6, characterized in that, Multiple flow-blocking sections (130) are provided in the same heat exchange channel (120), and the multiple flow-blocking sections (130) are arranged at intervals along the circumference of the heat exchange channel (120).

8. The heat exchange component according to any one of claims 3-6, characterized in that, The second cross-section is square or triangular.

9. The heat exchange component according to any one of claims 1-6, characterized in that, The heat exchange component (100) includes a heat exchange tube (110), and a plurality of heat exchange channels (120) are formed inside the heat exchange tube (110), and the plurality of heat exchange channels (120) are arranged in a straight line.

10. The heat exchange component according to claim 9, characterized in that, The number of heat exchange tubes (110) is multiple, and the multiple heat exchange tubes (110) are arranged at intervals along a first direction (Z), which is perpendicular to the airflow direction (X) and perpendicular to the axial direction of the heat exchange channel (120).

11. A heat exchanger, characterized in that, Includes the heat exchange component as described in any one of claims 1-10.

12. An air conditioning system, characterized in that, Includes the heat exchanger as described in claim 11.

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