Heat exchanger and air conditioning system

Abstract

The utility model relates to a heat exchanger and an air conditioning system. The heat exchanger comprises a shell and a mainboard. The side surface of the shell is provided with a flange; the main board and the shell are connected in a welded mode and form a heat exchange cavity, a protruding structure is arranged on the main board and comprises a plurality of positioning protruding points, and the positioning protruding points can be connected with the turned-over edge in a clamped mode so as to limit relative displacement of the main board and the shell. According to the heat exchanger, the multiple positioning protruding points are arranged on the main board, when the shell of the heat exchanger and the main board are assembled, the turned-over edge of the shell just abuts against the positions of the multiple positioning protruding points on the main board, then the limiting and guiding effects are achieved, and then the assembling structure of the shell and the main board is more compact; therefore, a uniform and small fit clearance can be formed between the mainboard and the shell, and the leakage risk after subsequent welding can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchange equipment, and in particular to a heat exchanger and an air conditioning system. Background Art

[0002] With the continuous development of automobile air-conditioning boxes, the current demand for air-conditioning boxes is also getting higher and higher, especially the need for energy-saving, safe and reliable air-conditioning systems.

[0003] The Haver tube heat exchanger in the existing air conditioner is generally assembled by riveting and then welded. However, during the riveting assembly process, the heat exchanger assembly structure is prone to uneven gaps, resulting in local cold welding.

[0004] With regard to the problem of uneven gaps in the heat exchanger assembly structure in the prior art, no effective solution has been proposed so far. Utility Model Content

[0005] Based on this, it is necessary to provide a heat exchanger and an air conditioning system that can improve the uniformity of the gaps in the assembly structure.

[0006] In order to solve the above technical problems, this application provides the following technical solutions:

[0007] A heat exchanger comprises: a shell, a flange is arranged on the side of the shell; a main board, the main board is welded to the shell to form a heat exchange cavity, wherein a protrusion structure is arranged on the main board, the protrusion structure comprises a plurality of positioning protrusions, and the plurality of positioning protrusions can be engaged with the flange to limit the relative displacement of the main board and the shell.

[0008] In the present application, by setting a plurality of positioning convex points on the mainboard of the heat exchanger, when the shell of the heat exchanger is assembled and connected with the mainboard, the mainboard and the shell are welded to form a heat exchange cavity, which is used to accommodate the heat exchange medium; at the same time, the flange of the shell just abuts against the positions of the plurality of positioning convex points on the mainboard, playing a role of limiting and guiding, making the assembly structure of the shell and the mainboard more compact. With the help of the positioning convex points and the flange of the shell, there is a uniform and small matching gap between the mainboard and the shell, avoiding the problem of local cold welding, which is conducive to reducing the risk of leakage after subsequent welding.

[0009] In one embodiment, the heat exchanger further includes: a partition member, which is disposed in the heat exchange cavity and divides the heat exchange cavity into a plurality of chambers.

[0010] It can be understood that by arranging a partition component in the heat exchange cavity formed by the main board and the shell, the partition component divides the heat exchange cavity into multiple chambers, and the multiple chambers are interconnected, which is conducive to achieving the heat exchange effect of the heat exchanger without affecting the compact connection structure of the main board and the shell.

[0011] In one embodiment, a plurality of leakage holes are provided on the partition component, and the plurality of chambers are interconnected through the leakage holes.

[0012] It is understandable that the heat exchange cavity is divided into multiple chambers by a partition component, and multiple leakage holes are provided on the partition component, so that the multiple chambers are interconnected through the leakage holes, but not through the connection between the partition component and the main board and the shell, which is conducive to reducing the risk of internal leakage of the heat exchanger. In one embodiment, a first groove is provided on the shell; a second groove is provided on the main board, and the two sides of the partition component are respectively correspondingly inserted into the first groove and the second groove.

[0013] It can be understood that by setting a first groove on the shell and connecting the shell to the partition member through the first groove; at the same time, setting a second groove on the main board and connecting the main board to the partition member through the second groove; assembling and positioning the shell and the main board with a groove structure on both sides of the partition component respectively, it is beneficial to improve the uniformity of the assembly gap of the heat exchanger, and then it is beneficial to improve the qualified rate of subsequent welding and reduce the risk of internal leakage of the heat exchanger.

[0014] In one embodiment, the depth of the first groove is less than the thickness of the housing.

[0015] It can be understood that by setting the depth of the first groove to be smaller than the thickness of the shell, the problem of increasing the volume of the shell due to the groove depth exceeding the shell thickness is avoided, which is beneficial to reducing the volume of the heat exchanger and making the structure of the heat exchanger more compact.

[0016] In one embodiment, a plurality of first through holes are spaced apart on the shell; a plurality of first protrusions are correspondingly provided on the edge of the partition member close to the first through holes; the partition member is plugged into the first protrusions through the first through holes to be fixedly connected to the shell.

[0017] It can be understood that by providing a plurality of first through holes at intervals on the shell, and correspondingly providing a plurality of first protrusions on the edge of the partition member close to the first through holes, the first protrusions are inserted into the first through holes, thereby making the partition member fixedly connected to the shell; after the plurality of first protrusions on the partition member are correspondingly inserted into the plurality of first through holes, the portion of the first protrusion protruding from the shell is squeezed through a riveting process, so that the portion protruding from the shell expands. The riveting process makes the first protrusion and the first through hole fit more closely, thereby improving the tightness of the connection between the partition member and the shell. At the same time, combined with the structure of the partition member being inserted into the first groove on the shell, the fit between the shell and the partition member is made tighter, thereby helping to reduce the risk of leakage after welding.

[0018] In one embodiment, the heat exchanger further includes: an end cover, which is fixedly connected to the shell and the main board respectively; wherein a second through hole is opened on the end cover; a second protrusion is provided at the end of the partition member corresponding to the position of the second through hole; the partition member is plugged into the second through hole through the second protrusion to be connected to the end cover.

[0019] It can be understood that an end cover fixedly connected to the shell and the mainboard is provided on the heat exchanger; a second through hole is provided on the end cover so that the second protrusion corresponding to the second through hole provided on the end of the partition member is inserted into the second through hole, thereby connecting the partition member and the end cover; when the second protrusion on the partition member is correspondingly inserted into the second through hole, the part of the second protrusion protruding from the end cover is squeezed through a riveting process so that the part protruding from the end cover expands. The riveting process makes the second protrusion and the second through hole fit more closely, thereby improving the tightness of the connection between the partition member and the end cover. The close fit between the end cover and the partition member facilitates the close fit of multiple parts in the heat exchanger, thereby improving the compactness of the heat exchanger assembly, and thereby facilitating the reduction of the risk of leakage after welding.

[0020] In one embodiment, a plurality of flat tube holes are formed on the main board; the heat exchanger further comprises a flat tube, one end of which is inserted into the heat exchange cavity through the flat tube hole.

[0021] It is understandable that by providing a plurality of flat tube holes on the main board for inserting the flat tubes into the heat exchange cavity, the heat transfer efficiency of the heat exchanger can be improved according to the flat shape of the flat tubes. At the same time, the cross-sectional shape of the flat tubes gives them a high rigidity, which can effectively resist deformation and deflection, ensure the stability and safety of the pipeline, and thus help improve the structural stability of the heat exchanger.

[0022] In one embodiment, the flange is provided with a toothed structure; the tooth surface of the toothed structure does not contact the circumferential side wall of the flat tube hole.

[0023] It can be understood that by setting the flange of the shell to a toothed structure, the volume and weight of the shell are reduced; at the same time, when the shell and the main board are connected, the toothed structure can avoid the circumferential side walls and flat tubes of the flat tube holes on the main board, thereby making the structure of the entire heat exchanger more compact and reducing the volume of the heat exchanger.

[0024] This application also provides the following technical solutions:

[0025] An air conditioning system comprises the above-mentioned heat exchanger.

[0026] Compared with the prior art, the heat exchanger described above has a plurality of positioning protrusions on the main board. When the shell of the heat exchanger is assembled with the main board, the flange of the shell just contacts the positions of the plurality of positioning protrusions on the main board. The positioning protrusions play a role of limiting and guiding, making the assembly structure of the shell and the main board more compact. At the same time, the limiting effect of the positioning protrusions on the main board makes the main board and the shell have a uniform and small fitting gap, which helps to reduce the risk of leakage after subsequent welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 Exploded view of the heat exchanger provided for this application.

[0029] Figure 2 This is a schematic structural diagram of the cross section of the heat exchanger provided in this application.

[0030] Figure 3 Detailed structural diagram of the flange and mainboard assembly provided for this application.

[0031] Figure 4 This is a schematic diagram of the structure of the assembly between the end cover, shell and main board provided in this application.

[0032] Figure numerals: 100, heat exchanger; 10, shell; 11, first groove; 12, first through hole; 13, flange; 20, main board; 21, positioning protrusion; 22, second groove; 23, flat tube hole; 30, partition member; 31, first protrusion; 32, second protrusion; 33, leakage hole; 40, flat tube; 50, end cover; 51, second through hole. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0038] With the continuous development of automobile air-conditioning boxes, the current demand for air-conditioning boxes is also increasing, especially the need for energy-saving, safe and reliable air-conditioning systems. Therefore, the heat exchanger in the air-conditioning box needs to be compact and safe and reliable. However, among the various existing heat exchangers, some structures are not compact enough, resulting in a large volume of the air-conditioning box, and the gaps in the structural assembly are not uniform, resulting in the risk of internal and external leakage of the air-conditioning box after welding. In the present application, a heat exchanger is provided, which not only has a compact and uniform assembly structure, but also has a small overall volume, so that the air-conditioning system including the heat exchanger is safe, reliable and highly adaptable.

[0039] See also Figure 1 The present application provides a heat exchanger 100, which is installed in an air-conditioning box. When the air-conditioning system is working, the heat exchanger 100 absorbs heat from the air flow or water flow through the circulating air or water and transfers it to the external environment, thereby adjusting the room temperature.

[0040] In one embodiment, reference Figure 1 The heat exchanger 100 includes a shell 10 and a main board 20; a flange 13 is provided on the side of the shell 10; the main board 20 is welded to the shell 10 to form a heat exchange cavity, wherein a protrusion structure is provided on the main board 20, and the protrusion structure includes a plurality of positioning protrusions 21, and the plurality of positioning protrusions 21 can be engaged with the flange 13 to limit the relative displacement of the main board 20 and the shell 10, thereby facilitating a small and uniform assembly gap between the shell 10 and the main board 20. Exemplarily, the shell 10 is the shell 10 of the water chamber in the heat exchanger 100 structure.

[0041] Furthermore, the side walls of the main board 20 and the plurality of positioning protrusions 21 provided on the main board 20 form a plurality of limiting structures, and when the main board 20 is connected to the housing 10, the flange 13 of the housing 10 is engaged in the limiting structures, thereby ensuring a small and uniform assembly gap between the housing 10 and the main board 20. This is beneficial to prevent leakage of the heat exchanger 100 after the heat exchanger 100 is assembled and welded.

[0042] Specifically, see Figure 1 and Figure 2 The heat exchanger 100 provided in the present application includes a shell 10, a main board 20, a partition member 30, a flat tube 40 and an end cover 50 (the position and connection relationship of the end cover can be found in Figure 4). The flange 13 of the shell 10 is fixedly connected to the main board 20, and the end cover 50 is fixedly connected to the shell 10 and the main board 20, thereby forming a heat exchange cavity to accommodate a heat exchange medium; illustratively, the heat exchange medium includes circulating air or water; the flat tube 40 is fixedly connected below the main board 20, and is plugged into the main board 20 through the flat tube hole 23 provided on the main board 20, and the partition member 30 is provided in the heat exchange cavity formed by the shell 10 and the main board 20; illustratively, the partition member can be a spacer.

[0043] In one embodiment, the flange 13 abuts against the positioning protrusion 21 provided on the main board 20, playing the role of limiting and guiding; at the same time, the flange 13 abuts against the inner side wall of the main board 20, thereby realizing the fixed connection between the shell 10 and the main board 20. By the clamping of the shell 10 and the positioning protrusion 21, and the abutment of the shell 10 and the inner side wall of the main board 20, the relative movement of the shell 10 and the main board 20 is limited, ensuring that the matching clearance between the main board 20 and the shell 10 is small during assembly and the assembly structure is stable and uniform, which is conducive to improving the qualification rate of subsequent welding, thereby reducing the leakage risk inside the heat exchanger 100.

[0044] More specifically, a row of positioning protrusions 21 are provided on both sides of the main board 20, so that the flanges 13 on both sides of the shell 10 are respectively against the positions of the plurality of positioning protrusions 21. Exemplarily, the welding between the main board 20 and the shell 10 can be brazing. Brazing refers to a welding method in which a brazing material lower than the melting point of the weldment and the weldment are heated to the melting temperature of the brazing material at the same time, and the gap of the solid workpiece is filled with liquid brazing material to connect the metals.

[0045] In one embodiment, reference Figure 1 and Figure 2 The heat exchanger 100 structure also includes a partition member 30, which is arranged in the heat exchange cavity formed by connecting the shell 10 and the main board 20. The partition member 30 divides the heat exchange cavity into multiple chambers, and multiple leak holes 33 are opened on the partition member 30, and the multiple chambers are connected to each other through the leak holes 33. Further, the shell 10 is provided with a first groove 11, and the main board 20 is provided with a second groove 22. The two sides of the partition member 30 are respectively correspondingly inserted into the first groove 11 and the second groove 22; and the depth of the first groove 11 is less than the thickness of the shell 10. The shell 10 is provided with multiple first through holes 12 at intervals; the edge of the partition member 30 close to the first through hole 12 is correspondingly provided with multiple first protrusions 31; the partition member 30 is plugged into the first protrusion 31 through the first through hole 12 to be fixedly connected with the shell 10.

[0046] In one embodiment, after the plurality of first protrusions 31 on the partition member 30 are correspondingly inserted into the plurality of first through holes 12, the portion of the first protrusion 31 protruding from the housing 10 is squeezed by a riveting process, so that the portion protruding from the housing 10 expands. The riveting process makes the first protrusion 31 and the first through hole 12 fit more closely, thereby improving the tightness of the connection between the partition member 30 and the housing 10.

[0047] In one embodiment, reference Figure 2 and Figure 3 A partition member is provided in the heat exchange cavity formed by the shell 10 and the main board 20, and the partition member 30 is connected to the shell 10 and the main board 20 respectively. Specifically, a groove structure is adopted on the inner side wall of the shell 10 and the main board 20, that is, a first groove 11 is provided on the shell 10, and a second groove 22 is provided on the main board 20, the upper edge of the partition member 30 is clamped in the first groove 11, and the lower edge of the partition member 30 is clamped in the second groove 22, so that the partition member 30 is assembled and positioned with the shell 10 and the main board 20 respectively, so that the assembly of the shell 10 and the main board 20 is more compact, which is conducive to reducing the risk of internal leakage of the heat exchanger 100.

[0048] Furthermore, in one embodiment, the depth of the first groove 11 is less than the thickness of the shell 10, which helps to avoid increasing the volume of the shell 10; the depth of the second groove 22 can be less than, equal to or slightly greater than the thickness of the mainboard 20, and is not specifically limited here.

[0049] Furthermore, in one embodiment, a local protruding structure is provided on the partition member, i.e., the partition member 30, and the protruding structure is adapted to the corresponding opening of the shell 10. Through the connection between the shell 10 and the partition member 30, the assembly of the various parts is made tighter, thereby reducing the risk of leakage after welding.

[0050] In one embodiment, reference Figure 3 , the main board 20 is also provided with a plurality of flat tube holes 23; the heat exchanger 100 further includes a flat tube 40, one end of which is inserted into the heat exchange cavity through the flat tube hole 23. Further, a tooth-like structure is provided on the flange 13 of the shell 10; the tooth surface of the tooth-like structure does not contact the circumferential side wall of the flat tube hole 23.

[0051] In one embodiment, reference Figure 3The flange 13 adopts a toothed structure. When the shell 10 and the main board 20 are assembled, the multiple gaps on the toothed structure correspond to the flanges avoiding the multiple flat tube holes 23 opened on the main board 20 and the inserted flat tubes 40, thereby forming an avoidance structure; compared with the flange 13 without a toothed structure, when the shell 10 and the main board 20 of this embodiment are assembled, the toothed structure will form a toothed avoidance, and there is no need to increase the volume of the flange 13 and the main board 20. At the same time, it avoids the contact between the flange 13 and the flat tube holes 23 and the flat tubes 40 on the main board 20 when the shell 10 and the main board 20 are connected, resulting in a problem of a loose assembly structure, which is beneficial to reduce the volume and weight of the heat exchanger 100, and at the same time avoids the risk of leakage after the heat exchanger is assembled and welded.

[0052] Furthermore, a plurality of positioning protrusions 21 are provided on the mainboard 20 and the flange 13 adopts a tooth-like structure, which is conducive to obtaining a uniform assembly gap between the housing 10 and the mainboard 20, and is also conducive to improving the qualification rate of subsequent welding.

[0053] In one embodiment, reference Figure 4 The heat exchanger 100 further includes: an end cover 50, which is fixedly connected to the shell 10 and the main board 20 respectively; wherein a second through hole 51 is opened on the end cover 50; a second protrusion 32 is arranged at the end of the partition member 30 corresponding to the position of the second through hole 51; the partition member 30 is plugged into the second through hole 51 through the second protrusion 32 to be connected to the end cover 50.

[0054] Specifically, refer to Figure 1 and Figure 4 , the housing 10 is provided with first through holes 12 at intervals, the end cover 50 is provided with second through holes 51, and at the same time, the partition member 30 is provided with first protrusions 31 and second protrusions 32 at positions corresponding to the first through holes 12 and the second through holes 51. The first protrusion 31 is engaged in the first through hole 12, and the second protrusion 32 is engaged in the second through hole 51, so that the partition member 30 is tightly assembled with the housing 10 and the end cover 50 respectively. In this embodiment, reference is made to Figure 1 and Figure 4 The number of the first through holes 12 and the first protrusions 31 can be 6, the second through holes 51 are respectively arranged on the end covers 50 on both sides, and the number of the second through holes 51 and the second protrusions 32 are both 2; the number of the above-mentioned through holes and protrusions is not specifically limited here.

[0055] Furthermore, after the second protrusion 32 on the partition member 30 is correspondingly inserted into the second through hole 51, the portion of the second protrusion 32 protruding from the end cover 50 is squeezed through the riveting process, so that the portion protruding from the end cover 50 expands. The riveting process makes the second protrusion 32 and the second through hole 51 fit more closely, thereby improving the tightness of the connection between the partition member 30 and the end cover 50.

[0056] In one embodiment, reference Figure 4 The end cover 50 is fixedly connected to the shell 10 and the main board 20. The end cover 50 wraps the tightly connected shell 10 and the main board 20 to form a heat exchange cavity. At the same time, the second through hole 51 on the end cover 50 is clamped with the second protrusion 32 provided on the partition member 30, so that the end cover 50 is tightly connected to the partition member 30.

[0057] In one embodiment, reference Figures 1 to 4 The partition member 30 divides the heat exchange cavity formed by the main board 20, the shell 10 and the end cover 50 into two left and right chambers, and a plurality of leakage holes 33 are opened on the partition member 30. At the same time, the partition member 30 is fixedly assembled with the shell 10, the main board 20 and the end cover 50 respectively; when the heat exchange medium is contained in the chamber, the heat exchange medium can only flow through the leakage holes 33, but cannot flow through the assembly gap between the partition member 30 and the shell 10, and the partition member 30 and the main board 20, which is conducive to avoiding the risk of internal leakage after the heat exchanger 100 is assembled and welded.

[0058] Furthermore, the leakage holes 33 in this embodiment are arranged at equal intervals, which is beneficial for the uniform flow of the heat exchange medium in the heat exchanger 100 .

[0059] In one embodiment, a plurality of through holes are provided on the housing 10 as inlets and outlets for the heat exchange medium. The size, number and position of the through holes vary depending on the type, design and use conditions of the heat exchanger 100. When designing the heat exchanger 100, factors such as the flow rate, pressure and temperature of the fluid need to be comprehensively considered to ensure that the through holes can effectively meet the requirements of heat exchange and fluid circulation.

[0060] The embodiment of the present application also provides an air conditioning system (not shown), which includes the above-mentioned heat exchanger 100. Exemplarily, the air conditioning system including the above-mentioned heat exchanger 100, that is, the air conditioning box, is installed in a car, and the air conditioning box also includes a compressor, a condenser, an expansion valve, an evaporator, and an air supply system. Specifically, the air conditioning refrigerant becomes a high-temperature and high-pressure gas under the action of the compressor, and then becomes a liquid refrigerant after being cooled by the condenser, and impurities are filtered through a drying bottle. The filtered refrigerant enters the heat exchanger, so that the air absorbs heat and cools, thereby achieving a cooling effect. Alternatively, the flow rate and pressure of the refrigerant liquid flowing into the evaporator are controlled by the expansion valve; when the refrigerant liquid passes through the expansion valve, the pressure drops sharply, causing the refrigerant liquid to become a low-temperature and low-pressure evaporation state. At this time, the heat exchanger connected to the evaporator begins to absorb the heat of the air in the car, causing the refrigerant to evaporate and absorb heat, thereby achieving a heat exchange effect. In addition, the air supply system and the heat exchanger work together to ensure that the air in the car is properly regulated and circulated.

[0061] In the heat exchanger 100 in the above embodiment, the shell flange 13 adopts a toothed structure, which is beneficial to reducing the overall volume of the heat exchanger 100 and making the heat exchanger 100 compact; a row of positioning protrusions 21 are respectively punched on both sides of the main board 20 of the heat exchanger 100, and the positioning protrusions 21 play a limiting and guiding role, ensuring that the fitting clearance between the main board 20 and the shell 10 is small and stable and uniform during assembly, thereby reducing the risk of leakage after welding; at the same time, both the shell 10 and the main board 20 adopt a groove structure, and are respectively assembled and positioned with the partition member 30, which is beneficial to improving the welding qualification rate and reducing the risk of internal leakage; a plurality of first protrusions 31 and a second protrusion 32 are arranged on the partition member 30, and then the partition member 30 is inserted into the through holes on the shell 10 and the end cover 50 through the plurality of protrusions, so that the assembly between the various parts of the heat exchanger 100 is tighter, which is beneficial to reducing the risk of leakage after welding.

[0062] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A heat exchanger, characterized in that: The heat exchanger comprises: A shell, wherein a flange is provided on a side of the shell; A main board, wherein the main board is welded to the shell to form a heat exchange cavity, wherein a protrusion structure is provided on the main board, the protrusion structure includes a plurality of positioning protrusions, and the plurality of positioning protrusions can be engaged with the flange to limit the relative displacement of the main board and the shell.

2. The heat exchanger according to claim 1, characterized in that: The heat exchanger also includes: A partition component is disposed in the heat exchange cavity and divides the heat exchange cavity into a plurality of chambers.

3. The heat exchanger according to claim 2, characterized in that: The partition member is provided with a plurality of leak holes, and the plurality of chambers are interconnected through the leak holes.

4. The heat exchanger according to claim 2, characterized in that: The shell is provided with a first groove; the main board is provided with a second groove, and two sides of the partition member are correspondingly inserted into the first groove and the second groove respectively.

5. The heat exchanger according to claim 4, characterized in that: The depth of the first groove is smaller than the thickness of the housing.

6. The heat exchanger according to claim 4, characterized in that The shell is provided with a plurality of first through holes at intervals; the edge of the partition member close to the first through holes is provided with a plurality of first protrusions correspondingly; The partition member is plugged into the first protrusion through the first through hole to be fixedly connected to the shell.

7. The heat exchanger according to claim 2, characterized in that: The heat exchanger also includes: End covers, the end covers are fixedly connected to the shell and the main board respectively; Wherein, a second through hole is provided on the end cover; a second protrusion is provided at the end of the partition member at a position corresponding to the second through hole; the partition member is plugged into the second through hole via the second protrusion to be connected to the end cover.

8. The heat exchanger according to claim 1, characterized in that The main board is also provided with a plurality of flat tube holes; the heat exchanger further comprises: A flat tube, one end of which is inserted into the heat exchange cavity through the flat tube hole.

9. The heat exchanger according to claim 8, characterized in that The flange is provided with a tooth-like structure; The tooth surface of the toothed structure does not contact the circumferential side wall of the flat tube hole.

10. An air conditioning system, characterized in that: Comprising a heat exchanger as claimed in any one of claims 1 to 9.

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