Filter, heat exchange device and air conditioning system

Abstract

The utility model discloses a filter piece, heat exchange device and air conditioning system, the filter piece includes filter body, the filter body includes: filter peripheral wall, first filter hole is equipped with to filter peripheral wall, filter end wall, the peripheral edge of filter end wall is connected with the first end of filter peripheral wall axially, filter end wall is equipped with second filter hole, and filter end wall has the concave and convex structure of recessing and protruding along the axial direction of filter peripheral wall. According to the filter piece of the utility model embodiment, by setting the concave and convex structure to the filter end wall of filter piece, can increase the filter area of filter piece while not extra increase the axial dimension of filter piece, improve the filtering efficiency of filter piece, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning system technology, and more specifically, to a filter element, a heat exchange device, and an air conditioning system. Background Technology

[0002] Impurities may remain in air conditioning systems during processing and installation, such as solder residue from welding. These impurities can easily clog the valve ports of valve core components, hindering the movement of the valve needle and affecting the normal operation of the air conditioning system. In related technologies, the filter elements in air conditioning systems often have small filtration areas and low filtration efficiency. Utility Model Content

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a filter element with a large filtration area and high filtration efficiency.

[0004] Another objective of this invention is to provide a heat exchange device having the aforementioned filter element.

[0005] Another objective of this invention is to provide an air conditioning system having the aforementioned heat exchange device.

[0006] According to an embodiment of the present invention, a filter element includes a filter body, the filter body comprising: a filter peripheral wall having a first filter hole; and a filter end wall having a periphery connected to a first end of the filter peripheral wall in the axial direction, the filter end wall having a second filter hole, and the filter end wall having a concave-convex structure along the axial direction of the filter peripheral wall.

[0007] According to the embodiments of the present invention, by providing a concave-convex structure on the filter end wall of the filter element, the filter area of ​​the filter element can be increased without increasing the axial dimension of the filter element, thereby improving the filter efficiency and making it highly practical.

[0008] In addition, the filter element according to the above embodiments of the present invention may also have the following additional technical features:

[0009] According to some embodiments of the present invention, the concave-convex structure includes multiple end walls and at least one connecting wall. The end walls extend horizontally, obliquely, or curvedly along the axial direction perpendicular to the filter peripheral wall. At least two end walls are staggered along the axial direction of the filter peripheral wall. Adjacent two end walls are connected by the connecting wall. Both the end walls and the connecting wall are provided with the second filter hole.

[0010] According to some embodiments of the present invention, a plurality of end walls are arranged sequentially along the radial direction of the filter peripheral wall, and the connecting wall is an annular wall extending circumferentially along the filter peripheral wall and is used to connect two radially adjacent end walls.

[0011] According to some embodiments of the present invention, the plurality of end walls include a first end wall, a second end wall, and a third end wall arranged radially outward in sequence. The outer periphery of the third end wall is connected to the filter peripheral wall. The first end wall is located on the side of the third end wall axially away from the filter peripheral wall, and the second end wall is located on the side of the third end wall axially close to the filter peripheral wall.

[0012] According to some embodiments of the present invention, the end wall and the connecting wall are smoothly connected by a transition section, and the transition section is provided with the second filter hole.

[0013] According to some embodiments of the present invention, the second end of the filter peripheral wall is connected to an axially extending mounting section, and the filter element further includes a mounting bracket with a slot, into which the mounting section is inserted.

[0014] According to some embodiments of the present invention, the diameter of the filter peripheral wall gradually increases from the first end to the second end.

[0015] According to some embodiments of the present invention, the mounting bracket includes an inner peripheral wall, an outer peripheral wall, and a connecting section. The outer peripheral wall surrounds the inner peripheral wall, and the slot is formed between the inner peripheral wall and the outer peripheral wall. The connecting section connects one end of the inner peripheral wall and one end of the outer peripheral wall, and the slot opening is formed between the other end of the inner peripheral wall and the other end of the outer peripheral wall.

[0016] According to some embodiments of the present invention, the outer peripheral wall includes a first wall portion, a second wall portion, and a third wall portion connected in sequence. One end of the first wall portion is connected to the connecting segment. The second wall portion extends obliquely in a direction away from the first wall portion and towards the inner peripheral wall. The third wall portion forms the groove between itself and the inner peripheral wall. The first wall portion and the second wall portion constitute a limiting protrusion, which is used for limiting the installation of the filter element.

[0017] A heat exchange device according to an embodiment of the present invention includes: a heat exchanger, a throttling valve assembly, and at least one filter element, wherein at least one of the filter elements is a filter element according to an embodiment of the present invention, the throttling valve assembly is mounted on the heat exchanger, at least one of the heat exchanger and the throttling valve assembly is provided with a mounting base, and the filter element is mounted on the mounting base.

[0018] According to some embodiments of the present invention, the mounting base has a mounting cavity, and the inner peripheral surface of the mounting cavity is provided with a first limiting boss and a second limiting boss. The first limiting boss and the second limiting boss are spaced apart along the axial direction. The filter element includes a mounting bracket, and the filter body is mounted on the mounting bracket. The outer peripheral surface of the mounting bracket forms a limiting protrusion, and at least a portion of the limiting protrusion is located between the first limiting boss and the second limiting boss.

[0019] According to some embodiments of this utility model, the inner diameter of the mounting cavity is D1, and the outer diameter of the limiting protrusion is D2, where D1 is greater than D2.

[0020] According to some embodiments of the present invention, the heat exchanger has a first heat exchange channel. In cooling mode and heating mode, the heat exchange medium in the first heat exchange channel flows in opposite directions. The throttling valve assembly is connected to and communicates with one end of the first heat exchange channel. The mounting base includes a first mounting base and a second mounting base. The first mounting base is integrated into the throttling valve assembly. The second mounting base is connected to and communicates with the other end of the first heat exchange channel. The filter element is provided in both the first mounting base and the second mounting base.

[0021] According to some embodiments of the present invention, the heat exchanger has a first heat exchange channel and a second heat exchange channel, and the throttling valve assembly includes a valve island, a first valve core component and a second valve core component. The valve island has a first flow path and a second flow path. One end of the second flow path and one end of the first heat exchange channel are both connected to one end of the first flow path, and the other end of the second flow path is connected to the second heat exchange channel. The first valve core component and a filter element are disposed in the first flow path, and the second valve core component is disposed in the second flow path.

[0022] An air conditioning system according to an embodiment of the present invention includes a heat exchange device according to an embodiment of the present invention.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a structural schematic diagram of the filter element according to an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the filter body according to an embodiment of the present utility model;

[0027] Figure 3 yes Figure 2 The front view;

[0028] Figure 4 yes Figure 3 A cross-sectional view along the direction indicated by line AA;

[0029] Figure 5 This is a schematic diagram of the structure of the mounting bracket according to an embodiment of the present utility model;

[0030] Figure 6 yes Figure 5 The center circle shows a magnified view of a portion at point B.

[0031] Figure 7 yes Figure 5 The front view;

[0032] Figure 8 yes Figure 5 Top view;

[0033] Figure 9 yes Figure 1 A sectional view of the middle section of the structure;

[0034] Figure 10 yes Figure 9 The center circle shows a magnified view of point C.

[0035] Figure 11 This is a schematic diagram of the cooperation structure of the heat exchange device and the connecting pipe according to an embodiment of the present utility model;

[0036] Figure 12 This is a top view of a heat exchanger according to an embodiment of the present utility model;

[0037] Figure 13 yes Figure 12 A cross-sectional view along the direction indicated by line DD;

[0038] Figure 14 This is a schematic diagram of the cooperation structure between the valve island and the first mounting base according to an embodiment of the present utility model;

[0039] Figure 15 yes Figure 14 The front view;

[0040] Figure 16 yes Figure 15 A cross-sectional view along the direction indicated by line EE;

[0041] Figure 17 This is a schematic diagram of the cooperation structure of the valve island, the first mounting base and the connecting pipe according to an embodiment of the present utility model;

[0042] Figure 18 yes Figure 17 The front view;

[0043] Figure 19 yes Figure 18 A cross-sectional view along the direction indicated by line FF;

[0044] Figure 20 This is a schematic diagram of an air conditioning system according to an embodiment of the present utility model.

[0045] Figure label:

[0046] Heat exchanger 1000; air conditioning system 2000; compressor 2100; four-way valve 2200; outdoor radiator 2300; indoor heat exchange unit 2400; indoor heat exchanger 2410; indoor valve core component 2420; indoor filter 2430; connecting pipe 2500;

[0047] Filter element 100;

[0048] Filter body 10;

[0049] Filter peripheral wall 11; first filter hole 111; first end 112; second end 113;

[0050] Filter end wall 12; second filter hole 121; concave-convex structure 122; end wall 1221; first end wall 12211; second end wall 12212; third end wall 12213; connecting wall 1222; transition section 1223;

[0051] Installation section 13;

[0052] Mounting bracket 20; slot 201; inner peripheral wall 21; outer peripheral wall 22; first wall portion 221; second wall portion 222; third wall portion 223; limiting protrusion 224; connecting section 23;

[0053] Heat exchanger 200; second mounting base 210; first heat exchange channel 220; first heat exchange interface 2201; second heat exchange interface 2202; second heat exchange channel 230; third heat exchange interface 2301; fourth heat exchange interface 2302; base plate 240; end plate 250; heat exchange unit 260;

[0054] Throttling valve assembly 300; first mounting base 310; mounting cavity 3101; first limiting boss 31011; second limiting boss 31012; valve island 320; first flow path 3201; second flow path 3202; first pipe interface 3203; second pipe interface 3204; first valve core component 330; second valve core component 340. Detailed Implementation

[0055] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0056] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0057] In the description of this utility model, "first feature" and "second feature" may include one or more of the features, "multiple" means two or more, "first feature above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them, and "first feature above", "above" and "over" the second feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0058] The filter element 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0059] Reference Figures 1-20 As shown, the filter element 100 according to this embodiment of the present invention can be used in a heat exchange device 1000 or other devices. The filter element 100 may include a filter body 10, which includes a filter peripheral wall 11 and a filter end wall 12. The filter body 10 may be made of stainless steel or other materials.

[0060] Specifically, the filter peripheral wall 11 is provided with a first filter hole 111. The periphery of the filter end wall 12 is connected to the first end 112 in the axial direction of the filter peripheral wall 11, and the filter end wall 12 is provided with a second filter hole 121. The shape, through direction, etc. of the first filter hole 111 and the second filter hole 121 may be the same or different.

[0061] The heat exchange medium flowing in the heat exchanger 1000, such as refrigerant, may contain impurities. These impurities can easily clog the flow channels and components of the heat exchanger 1000, such as the expansion valve assembly 300, affecting the normal operation of the heat exchanger 1000. By installing a filter element 100 in the heat exchanger 1000, the heat exchange medium can be filtered through the first filter hole 111 and the second filter hole 121 as it flows through the filter element 100. This reduces the amount of impurities in the heat exchange medium, making the heat exchanger 1000 less prone to clogging and ensuring its normal operation.

[0062] The periphery of the filter end wall 12 is connected to the first end 112 of the filter peripheral wall 11, that is, the outer periphery of the filter end wall 12 is connected to the first end 112. The outer periphery of the filter end wall 12 can extend along a circular, rectangular, irregular, or other shape. The first end 112 of the filter peripheral wall 11 in the axial direction is one end of the filter peripheral wall 11 extending along its own axis. For example, in some embodiments, such as... Figures 1-4 As shown, the axial direction of the filter peripheral wall 11 is parallel to the vertical direction, the upper end of the filter peripheral wall 11 is the first end 112, and the lower end of the filter peripheral wall 11 is the second end 113. It should be noted that in this application, the descriptions of directions such as up, down, front, back, left, and right are based on the directions marked in the drawings, and are not restrictions on the actual usage orientation of the filter element 100 or its installation orientation in the heat exchange device 1000.

[0063] The filter end wall 12 has a concave and convex structure 122 along the axial direction of the filter peripheral wall 11, which can increase the area of ​​the filter end wall 12 while keeping the axial dimension of the filter element 100 constant, thereby increasing the filtration area of ​​the filter element 100 that can be used to filter the heat exchange medium and improving the filtration efficiency of the filter element 100.

[0064] The concave-convex structure 122 may include one or more recesses and one or more protrusions. A recess may have a plane perpendicular to the axial direction of the filter peripheral wall 11; for example, the bottom of the recess along the axial direction may be planar, forming a U-shape. A recess may also not have a plane perpendicular to the axial direction of the filter peripheral wall 11; for example, the bottom of the recess along the axial direction may be dot-shaped or line-shaped, forming a V-shape. Similarly, a protrusion may or may not have a plane perpendicular to the axial direction of the filter peripheral wall 11; for example, the top of the protrusion along the axial direction may be planar, dot-shaped, or line-shaped.

[0065] The concave-convex structure 122 may include multiple protrusions and concave parts arranged in a radial manner such as sequential arrangement, staggered arrangement, or random arrangement along the filter peripheral wall 11. The concave-convex structure 122 has various forms.

[0066] In some related technologies, the filter surface of the filter element is a flat surface or a convex surface with curvature, resulting in a small filtration area and low filtration efficiency. In order to increase the filtration area of ​​the filter element, the axial dimension of the filter element is usually increased. However, if the axial dimension of the filter element is too large, it is easy to cause the filter surface of the filter element to overlap. For example, wrinkles on the wall of the filter element can cause adjacent filter holes on the wall to overlap, increasing the flow resistance near the overlapping part of the filter element, resulting in a decrease in the flow velocity of the heat exchange medium and a decrease in the filtration efficiency of the filter element.

[0067] The filter element 100 in this application has a concave-convex structure 122, which can increase the filtration area of ​​the filter element 100 without changing its axial dimension, thereby improving the filtration efficiency of the filter element 100. In this application, the axial dimension of the filter element 100 is not excessively long, so the surface of the filter element 100 is less likely to overlap, which helps to keep the flow resistance at the filter element 100 at a low level, thereby increasing the flow rate of the heat exchange medium and increasing the filtration efficiency.

[0068] According to the embodiment of the present utility model, the filter element 100, by providing a concave-convex structure 122 on the filter end wall 12 of the filter element 100, can increase the filter area of ​​the filter element 100 without increasing the axial dimension of the filter element 100, thereby improving the filter efficiency of the filter element 100 and making it highly practical.

[0069] In some embodiments of this utility model, such as Figures 1-4 As shown, the concave-convex structure 122 includes a plurality of end walls 1221 and at least one connecting wall 1222. The end walls 1221 extend horizontally along a direction perpendicular to the axis of the filter peripheral wall 11, that is, the extending direction of the end walls 1221 is perpendicular to the axial direction of the filter peripheral wall 11. For example, in some specific embodiments, such as Figures 1-4 As shown, the axial direction of the filter peripheral wall 11 is parallel to the vertical direction, and the end wall 1221 extends along the horizontal plane. In other embodiments, the end wall 1221 may also extend obliquely or bend along a direction perpendicular to the axis of the filter peripheral wall 11.

[0070] At least two end walls 1221 are axially aligned with the filter peripheral wall 11 (e.g. Figure 4 The filter elements 1221 are staggered (as shown in the vertical direction), with adjacent end walls 1221 connected by a connecting wall 1222. Both end walls 1221 and connecting walls 1222 are provided with second filter holes 121. During the flow of the heat exchange medium through the filter end walls 1221, the heat exchange medium can be filtered both axially through the end walls 1221 and axially through the connecting walls 1222. This not only increases the filtration area but also increases the number of filtration directions, which is beneficial for improving the filtration efficiency of the filter element 100. Furthermore, since the heat exchange medium mainly flows axially, axial filtration through the end walls 1221 provides a better filtration effect.

[0071] In some embodiments, such as Figures 1-4 As shown, multiple end walls 1221 are arranged sequentially along the radial direction (perpendicular to the axial direction) of the filter peripheral wall 11. The multiple end walls 1221 can be sequentially nested radially, for example... Figures 1-4 The radially outer end wall 1221 shown is fitted over the radially inner end wall 1221. Multiple end walls 1221 can also be arranged in an array, randomly, or according to other patterns. The connecting wall 1222 is an annular wall extending circumferentially along the filter peripheral wall 11 and used to connect two radially adjacent end walls 1221, wherein the annular shape can be circular, square, or other annular shapes.

[0072] By using multiple end walls 1221 arranged radially and connecting walls 1222 extending circumferentially, the utilization rate of the filter end walls 12 can be improved. This allows for the formation of more end walls 1221 and connecting walls 1222 on the filter end walls 12 while meeting structural strength requirements. The filter end walls 12 can be designed with a larger total filtration area to improve filtration efficiency. Furthermore, it reduces the manufacturing difficulty of the filter element 100; for example, the filter body 10 can be mass-produced using processes such as stamping and injection molding, making it easier to manufacture.

[0073] In some embodiments of this utility model, such as Figures 1-4 As shown, the multiple end walls 1221 include a first end wall 12211, a second end wall 12212, and a third end wall 12213 arranged radially outwards. The outer periphery of the third end wall 12213 is connected to the filter peripheral wall 11. The first end wall 12211 is located on the side of the third end wall 12213 axially away from the filter peripheral wall 11, and the second end wall 12212 is located on the side of the third end wall 12213 axially close to the filter peripheral wall 11, so that the first end wall 12211, which is the innermost radially, is the outermost axially. In the flow channel through which the heat exchange medium flows, the flow velocity of the heat exchange medium is the highest in the middle part of the channel, and the flow velocity of the heat exchange medium decreases as it approaches the channel wall. Therefore, during the process of the heat exchange medium flowing through the filter element 100, the part of the heat exchange medium with the highest flow velocity contacts the first end wall 12211, which is the innermost radially, firstly to filter the heat exchange medium with the highest flow velocity, thereby improving the filtration efficiency of the filter element 100.

[0074] For example, in some specific embodiments, such as Figure 4 As shown, the two ends of the filter peripheral wall 11 in the axial direction are the first end 112 and the second end 113, respectively. The distance between the first end wall 12211 and the second end 113 in the axial direction of the filter peripheral wall 11 is L1, the distance between the second end wall 12212 and the second end 113 in the axial direction of the filter peripheral wall 11 is L2, and the distance between the third end wall 12213 and the second end 113 in the axial direction of the filter peripheral wall 11 is L3, where L1 > L3 > L2.

[0075] In some embodiments, such as Figures 1-4 As shown, the end wall 1221 and the connecting wall 1222 are smoothly connected by a transition section 1223. The transition section 1223 is provided with a second filter hole 121, and the transition section 1223 can extend along a curve or other smooth shape. The transition section 1223 can increase the filtration area between the end wall 1221 and the connecting wall 1222 to improve filtration efficiency, and can also reduce the flow resistance at the transition section 1223, which is beneficial to filtration efficiency.

[0076] In some embodiments, such as Figures 1-4 As shown, the filter end wall 12 and the filter peripheral wall 11 are smoothly transitioned by a transition section 1223, which is provided with filter holes. The transition section 1223 can increase the filtration area between the filter end wall 12 and the filter peripheral wall 11 to improve filtration efficiency, and can also reduce the flow resistance at the transition section 1223, which is beneficial to filtration efficiency.

[0077] In some embodiments of this utility model, such as Figures 1-10 As shown, the second end 113 of the filter peripheral wall 11 axially upward (e.g. Figures 1-4 The lower end of the filter peripheral wall 11 shown is connected to a mounting section 13, which may be provided with filter holes (such as...). Figures 2-4 (as shown) or without filter holes.

[0078] The filter element 100 also includes a mounting bracket 20, which has a slot 201. The mounting section 13 is inserted into the slot 201. The mounting section 13 and the slot 201 can be fixedly connected or detachably connected. For example, the mounting section 13 and the slot 201 can be fixedly connected by welding. By inserting the mounting section 13 into the slot 201, the filter body 10 and the mounting bracket 20 can be connected, which is convenient for installation and helps to reduce the manufacturing difficulty of the filter element 100.

[0079] In some embodiments, such as Figures 1-4 and Figures 9-10 As shown, the diameter of the filter peripheral wall 11 gradually increases from the first end 112 to the second end 113, resulting in different diameters of the filter peripheral wall 11 at different axial positions. During the insertion of the mounting section 13 into the slot 201, the variable diameter structure of the filter peripheral wall 11 can limit the insertion of the mounting section 13 into the slot 201. For example, during the insertion of the mounting section 13 into the slot 201, the filter peripheral wall 11 is installed in place until it contacts the slot 201. This prevents the filter peripheral wall 11 from being inserted into the slot 201 too much, which would reduce the axial dimension of the filter body 10 outside the mounting bracket 20. This results in a larger filtration area of ​​the filter element 100 outside the mounting bracket 20, more reliable filtration, and higher filtration efficiency.

[0080] The diameter of the filter peripheral wall 11 gradually increases from the first end 112 to the second end 113, and the gap between the outer peripheral surface of the filter peripheral wall 11 and the inner peripheral surface of the heat exchange medium flow channel can also be increased from the second end 113 to the first end 112 (e.g.) Figures 11-19 The gap between the outer peripheral surface of the filter peripheral wall 11 and the inner peripheral surface of the first mounting base 310 (shown) helps to reduce the flow resistance at the filter peripheral wall 11, reduce the risk of impurities clogging the filter peripheral wall 11, and improve the filtration efficiency of the filter element 100.

[0081] In some embodiments of this utility model, such as Figures 5-10 As shown, the mounting bracket 20 includes an inner peripheral wall 21, an outer peripheral wall 22, and a connecting section 23. The outer peripheral wall 22 surrounds the inner peripheral wall 21, and a slot 201 is formed between the inner peripheral wall 21 and the outer peripheral wall 22. The connecting section 23 connects one end of the inner peripheral wall 21 and one end of the outer peripheral wall 22, and a groove of the slot 201 is formed between the other end of the inner peripheral wall 21 and the other end of the outer peripheral wall 22. The inner peripheral wall 21, the outer peripheral wall 22, and the connecting section 23 can be integrally formed, or they can be separately formed and then connected into one piece.

[0082] The inner peripheral wall 21, the outer peripheral wall 22 and the connecting section 23 form a mounting bracket 20 with a slot 201. The structure is relatively simple and easy to manufacture. For example, the mounting bracket 20 can be mass-produced by stamping, injection molding and other processes, which is convenient to process.

[0083] The structure of at least one of the inner peripheral wall 21, the outer peripheral wall 22, and the connecting section 23 can be designed to facilitate the installation of the mounting bracket 20 in the heat exchange device 1000. For example, in some embodiments, such as Figures 5-10 As shown, the outer peripheral wall 22 includes a first wall portion 221, a second wall portion 222, and a third wall portion 223 connected in sequence. One end of the first wall portion 221 is connected to the connecting section 23. The second wall portion 222 extends obliquely in a direction away from the first wall portion 221 and towards the inner peripheral wall 21. A groove is formed between the third wall portion 223 and the inner peripheral wall 21. The first wall portion 221 and the second wall portion 222 constitute a limiting protrusion 224, which is used for limiting the installation of the filter element 100. The first wall portion 221, the second wall portion 222, and the third wall portion 223 can be integrally formed or separately formed and then connected as one piece.

[0084] By designing the structure of the outer peripheral wall 22, the third wall portion 223 of the first wall portion 221, second wall portion 222, and third wall portion 223 is made to be radially closer to the inner peripheral wall 21, so as to form a slot 201 and realize the connection between the filter body 10 and the mounting. The second wall portion 222 is made to be radially away from the first wall portion 221 and outward, so that the first wall portion 221 is radially further away from the inner peripheral wall 21, which can form a radially outward protruding limiting protrusion 224. During the process of installing the filter element 100 into the heat exchange device 1000, the limiting protrusion 224 can limit the filter element 100 to the heat exchange device 1000, so that the filter element 100 is not easy to shake or even fall off during the flow of heat exchange medium, which helps to improve the filtration efficiency and filtration reliability of the filter element 100.

[0085] This application also proposes a heat exchange device 1000, which includes a filter element 100 according to an embodiment of the present invention. The heat exchange device 1000 may also include other filter elements. All the above descriptions of the filter element 100 can be incorporated into the heat exchange device 1000 according to an embodiment of the present application.

[0086] like Figures 11-20 As shown, the heat exchange device 1000 according to an embodiment of the present invention includes: a heat exchanger 200, a throttling valve assembly 300, and at least one filter element, wherein the at least one filter element is the filter element 100 according to an embodiment of the present invention. The heat exchanger 200 is used to exchange heat with the heat exchange medium flowing through it. For example, a cooler medium at a lower temperature and a hotter medium at a higher temperature can exchange heat by entering the heat exchanger 200, thereby increasing the temperature of the cooler medium or decreasing the temperature of the hotter medium. Here, the low temperature of the cooler medium and the high temperature of the hotter medium are relative temperatures. The throttling valve assembly 300 may include an electronic expansion valve, a thermostatic expansion valve, or other types of throttling devices. The throttling valve assembly 300 is used to control the flow rate and pressure of the heat exchange medium to achieve precise flow regulation of the heat exchange medium. For example, the throttling valve assembly 300 can throttle and reduce the pressure of the heat exchange medium flowing through it, thereby lowering the temperature of the heat exchange medium. The filter element 100 is used to filter impurities mixed in with the heat exchange medium flowing through it.

[0087] A throttle valve assembly 300 is mounted on a heat exchanger 200. At least one of the heat exchanger 200 and the throttle valve assembly 300 is provided with a mounting base, and the filter element 100 is mounted on the mounting base. The throttle valve assembly 300 can be fixedly mounted on the heat exchanger 200 or detachably mounted on the heat exchanger 200, both of which can achieve integration between the throttle valve assembly 300 and the heat exchanger 200. The filter element 100 can be fixedly mounted on the mounting base or detachably mounted on the mounting base, both of which can achieve integration between the mounting base and the filter element 100, thereby integrating the filter element 100, the throttle valve assembly 300, and the heat exchanger 200, reducing the space occupied by each of the filter element 100, the throttle valve assembly 300, and the heat exchanger 200, thus reducing the overall volume of the heat exchange device 1000 and achieving miniaturization of the heat exchange device 1000.

[0088] In an embodiment where the heat exchanger 200 is provided with a mounting base, such as Figures 11-19 As shown, the mounting base can be fixedly installed on the heat exchanger 200, or it can be detachably installed on the heat exchanger 200, both of which can achieve integration between the mounting base and the heat exchanger 200.

[0089] In an embodiment where the throttle valve assembly 300 is provided with a mounting base, such as Figures 11-19 As shown, the mounting base can be fixedly mounted to the throttle valve assembly 300, or it can be detachably mounted to the throttle valve assembly 300, both methods achieving integration between the mounting base and the throttle valve assembly 300. For example, in some embodiments, such as... Figures 11-19 As shown, the throttle valve assembly 300 includes a valve island 320, which is integrally formed with the mounting base.

[0090] Because the filter element 100 according to the present utility model embodiment has the above-mentioned beneficial technical effects, the heat exchange device 1000 according to the present utility model embodiment can not only achieve miniaturization by integrating the filter element 100, the throttle valve assembly 300 and the heat exchanger 200 into one unit, but also increase the filtration area of ​​the filter element 100 without increasing the axial dimension of the filter element 100 by providing the concave-convex structure 122 on the filter end wall 12 of the filter element 100, thereby improving the filtration efficiency of the filter element 100 and making it highly practical.

[0091] Heat exchanger 200 is used to exchange heat with the heat exchange medium flowing through it. For example, in some embodiments, such as Figures 11-13As shown, the heat exchanger 200 includes a base plate 240, an end plate 250, and a heat exchange unit 260 disposed between the base plate 240 and the end plate 250. The heat exchange unit 260 has a first heat exchange channel 220 and a second heat exchange channel 230. The spaces occupied by the first heat exchange channel 220 and the second heat exchange channel 230 do not overlap, and the first and second heat exchange channels 220 and 230 are independent of each other. The end plate 250 has a first heat exchange interface 2201, a second heat exchange interface 2202, a third heat exchange interface 2301, and a fourth heat exchange interface 2302. The first and second heat exchange interfaces 2201 and 2202 are respectively located at both ends of the first heat exchange channel 220, and the third and fourth heat exchange interfaces 2301 and 2302 are respectively located at both ends of the second heat exchange channel 230. The heat exchange medium can be introduced into or flow out of the first heat exchange channel 220 through the first heat exchange port 2201 and the second heat exchange port 2202, and the heat exchange medium can be introduced into or flow out of the second heat exchange channel 230 through the third heat exchange port 2301 and the fourth heat exchange port 2302, so as to realize heat exchange between the heat exchange medium in the first heat exchange channel 220 and the second heat exchange channel 230.

[0092] In some embodiments of this utility model, such as Figure 11 and Figures 14-19 As shown, the mounting base has a mounting cavity 3101. The inner circumferential surface of the mounting cavity 3101 is provided with a first limiting boss 31011 and a second limiting boss 31012. The first limiting boss 31011 and the second limiting boss 31012 are spaced apart along the axial direction of the mounting cavity 3101. The filter element 100 includes a mounting bracket 20. The filter body 10 is mounted on the mounting bracket 20. The outer circumferential surface of the mounting bracket 20 forms a limiting protrusion 224. At least a portion of the limiting protrusion 224 is located between the first limiting boss 31011 and the second limiting boss 31012.

[0093] The first limiting boss 31011 and the second limiting boss 31012 protrude radially toward the interior of the mounting cavity 3101. The limiting protrusion 224 of the filter element 100 is located between the first limiting boss 31011 and the second limiting boss 31012, and the first limiting boss 31011 and the second limiting boss 31012 can abut against the filter element 100. The first limiting boss 31011 and the second limiting boss 31012 can limit the filter element 100 in the axial direction of the mounting cavity 3101, so as to securely install the filter element 100 in the mounting cavity 3101, making it less likely for the filter element 100 to shake or even fall off, which is beneficial to improving the filtration efficiency and filtration reliability of the filter element 100 in the heat exchange device 1000. The dimensions of the first limiting boss 31011 and the second limiting boss 31012 along the axial and radial directions of the mounting base are not limited, as long as at least a portion of the limiting protrusion 224 can be limited between the first limiting boss 31011 and the second limiting boss 31012.

[0094] Both the first limiting boss 31011 and the second limiting boss 31012 can be integrally formed during the molding process of the mounting base, or they can be formed by machining the mounting base after it has been molded. For example, in some specific embodiments, such as Figures 14-19 As shown, the first limiting boss 31011 is integrally formed during the molding process of the mounting base. After the filter element 100 is installed into the mounting cavity 3101, the second limiting boss 31012 is pressed inward along the radial direction of the mounting cavity 3101 at the pre-designed position of the second limiting boss 31012 to form the second limiting boss 31012. This can limit the filter element 100 after it is installed into the mounting cavity 3101, making the installation operation of the filter element 100 more convenient.

[0095] In some embodiments, such as Figures 14-16 As shown, the inner diameter of the mounting cavity 3101 is D1, and the outer diameter of the limiting protrusion 224 is D2. D1 is greater than D2, so that the limiting protrusion 224 and the mounting seat are in clearance fit, which makes it easy to install the filter element 100 into the mounting cavity 3101 and facilitates operation.

[0096] The inner diameter of the mounting bracket 20 can be greater than, equal to, or less than the inner diameter of the first limiting boss 31011. For example, in some embodiments, such as Figure 10 and Figures 14-16 As shown, the inner diameter of the inner peripheral wall 21 is larger than the inner diameter of the first limiting boss 31011, which helps to increase the flow path diameter of the heat exchange medium, thereby accelerating the flow rate of the heat exchange medium and improving the filtration efficiency.

[0097] In some embodiments, such as Figure 10 and Figures 14-16As shown, the inner diameter of the second limiting boss 3101 is larger than the inner diameter of the first limiting boss 31011, which allows the second limiting boss 3101 to abut against the third wall portion 223 of the outer peripheral wall 22, and the inner peripheral wall 21 is placed on the axial outside of the first limiting boss 31011, so that the installation stability of the filter element 100 is better.

[0098] In some embodiments of this utility model, such as Figures 11-20 As shown, the heat exchanger 200 has a first heat exchange channel 220, in which the flow direction of the heat exchange medium within the first heat exchange channel 220 is opposite in cooling mode and heating mode. For example, in some embodiments, such as Figure 20 As shown in the figure, the solid arrows indicate the flow direction of the heat exchange medium in cooling mode, and the dashed arrows indicate the flow direction of the heat exchange medium in heating mode. Figures 11-13 and Figure 20 As shown, in cooling mode, the heat exchange medium flows into the first heat exchange channel 220 from the first heat exchange port 2201 and flows out from the second heat exchange port 2202. In heating mode, the heat exchange medium flows into the first heat exchange channel 220 from the second heat exchange port 2202 and flows out from the first heat exchange port 2201.

[0099] The throttle valve assembly 300 is connected and communicates with one end of the first heat exchange channel 220, for example... Figure 11 The throttle valve assembly 300 shown is connected and communicates with the first heat exchange interface 2201. The mounting base includes a first mounting base 310 and a second mounting base 210. The first mounting base 310 is integrated into the throttle valve assembly 300, and the second mounting base 210 is connected and communicates with the other end of the first heat exchange channel 220, for example... Figure 11 The second mounting base 210 shown is connected and communicates with the second heat exchange interface 2202. Both the first mounting base 310 and the second mounting base 210 are equipped with filters 100. The first mounting base 310 is connected to one end of the first heat exchange channel 220, and the second mounting base 210 is connected to the other end of the first heat exchange channel 220. The filters 100 in the first and second mounting bases can filter both ends of the first heat exchange channel 220, allowing the heat exchange medium in both cooling and heating modes to flow into the first heat exchange channel 220 after being filtered by the filters 100. This reduces the possibility of blockage of the heat exchange medium in the heat exchanger 200 and the throttle valve assembly 300, thereby improving the flow rate and filtration efficiency of the heat exchange medium and ultimately increasing its heat exchange efficiency.

[0100] In some embodiments of this utility model, such as Figures 11-20As shown, the heat exchanger 200 has a first heat exchange channel 220 and a second heat exchange channel 230. The throttle valve assembly 300 includes a valve island 320, a first valve core component 330, and a second valve core component 340. The valve island 320 has a first flow path 3201 and a second flow path 3202. One end of the second flow path 3202 and one end of the first heat exchange channel 220 are both connected to one end of the first flow path 3201, and the other end of the second flow path 3202 is connected to the second heat exchange channel 230. For example... Figures 11-13 and Figure 20 As shown, in cooling mode, the downstream end of the first flow path 3201 is connected to the first heat exchange interface 2201, and the downstream end of the first flow path 3201 is also connected to the upstream end of the second flow path 3202. The downstream end of the second flow path 3202 is connected to the third heat exchange interface 2301. In heating mode, the upstream end of the first flow path 3201 is connected to the first heat exchange interface 2201, and the upstream end of the first flow path 3201 is also connected to the upstream end of the second flow path 3202. The downstream end of the second flow path 3202 is connected to the third heat exchange interface 2301.

[0101] The first valve core component 330 can throttle and reduce the pressure of the heat exchange medium flowing through it, and the second valve core component 340 can throttle and reduce the pressure of the heat exchange medium flowing through it. The first valve core component 330 and a filter element 100 are disposed in the first flow path 3201, and the second valve core component 340 is disposed in the second flow path 3202. The first valve core component 330 and the second valve core component 340 can be installed through the valve island 320, realizing the integration of the first valve core component 330 and the second valve core component 340, thereby reducing the space occupied by the first valve core component 330 and the second valve core component 340 and achieving miniaturization of the heat exchange device 1000. For example, in some embodiments, such as Figures 11-19 As shown, valve island 320 has a first pipe interface 3203 and a second pipe interface 3204. The first valve core component 330 is connected to the first pipe interface 3203 of valve island 320 and is disposed in the first flow path 3201 of valve island 320. The second valve core component 340 is connected to the second pipe interface 3204 of valve island 320 and is disposed in the second flow path 3202 of valve island 320.

[0102] The first valve core component 330 can throttle and reduce the pressure of the heat exchange medium flowing through the first heat exchange channel 220, and the second valve core component 340 can throttle and reduce the pressure of the heat exchange medium flowing through the second heat exchange channel 230. By adjusting the opening degree of the first valve core component 330 and the second valve core component 340, the degree of throttling and pressure reduction of the heat exchange medium can be adjusted, thereby achieving pressure and temperature regulation of the heat exchange medium flowing through the first heat exchange channel 220 and the second heat exchange channel 230. The filter element 100 of the first flow path 3201 can also filter the heat exchange medium flowing in the first heat exchange channel 220 and the second heat exchange channel 230, reducing the possibility of blockage in the heat exchanger 200 and improving the heat exchange efficiency of the heat exchanger 200.

[0103] For example, in some embodiments, such as Figure 20 As shown, the filter element 100 at the first flow path 3201 is located on the side of the first valve core component 330 away from the heat exchanger 200. This allows the filter element 100 at the first flow path 3201 to be located upstream of the first valve core component 330 in cooling mode, enabling the filter element 100 to filter the heat exchange medium flowing through the first valve core component 330 and the second valve core component 340, reducing the possibility of blockage in the first and second valve core components 330 and improving their operational reliability. A filter element 100 is externally connected to the second heat exchange interface 2202, so that in heating mode, this filter element 100 is located upstream of the second heat exchange interface 2202, and the heat exchange medium flows into the heat exchanger 200 after being filtered by this filter element 100, reducing the possibility of blockage in the heat exchanger 200.

[0104] It should be noted that the flow direction of the heat exchange medium at the filter element 100 is along the axial direction of the filter peripheral wall 11 from the filter end wall 12 toward the filter peripheral wall 11. This makes it difficult for impurities in the heat exchange medium to accumulate on the inner surface of the filter element 100 and hinder the flow of the heat exchange medium after it flows through the filter element 100. After filtration by the filter element 100, the impurities mixed in the heat exchange medium are easy to accumulate on the outer surface of the filter element 100 around the filter element 100, which is not likely to affect the flow of the heat exchange medium and helps to maintain a high flow rate of the heat exchange medium, thereby improving the filtration efficiency.

[0105] For example, in some specific embodiments, such as Figures 11-19 As shown, the filter element 100 located at the first mounting base 310 has its filter end wall 12 situated on the upper side of the filter peripheral wall 11. In cooling mode, the heat exchange medium at the filter element 100 flows from the upper side to the lower side. The filter element 100 located at the second mounting base 210 has its filter end wall 12 situated on the upper side of the filter peripheral wall 11. In heating mode, the heat exchange medium at the filter element 100 flows from top to bottom.

[0106] like Figure 20As shown, the air conditioning system 2000 according to an embodiment of the present invention includes a heat exchange device 1000 according to an embodiment of the present invention. The air conditioning system 2000 can be a multi-split system, that is, an air conditioning system in which one outdoor unit is connected to multiple indoor units. The air conditioning system 2000 can also be of other types, such that the air conditioning system 2000 includes the heat exchange device 1000 to exchange heat with the heat exchange medium, and can partially or completely regulate the temperature, humidity, flow rate and cleanliness of the air.

[0107] The air conditioning system 2000 may also include components such as a compressor 2100 and a connecting pipe 2500. The heat exchange device 1000 and other components in the air conditioning system 2000 can be connected through the connecting pipe 2500.

[0108] In some related technologies, impurities may remain in the air conditioning system during the processing and installation of the air conditioning system, such as solder residue from the welding process. These impurities can easily clog the valve port of the valve core component, hindering the movement of the valve needle in the valve core component and affecting the normal operation of the air conditioning system.

[0109] In this application, the air conditioning system 2000 includes a heat exchange device 1000 according to an embodiment of the present invention, and the heat exchange device 1000 includes a filter element 100 according to an embodiment of the present invention. The filter end wall 12 of the filter element 100 is provided with a concave-convex structure 122, which can achieve filtration of the heat exchange medium. Moreover, the filter area is large and the filtration efficiency is high, which helps to reduce the impurities remaining in the air conditioning system 2000 in the heat exchange medium, ensures that the working performance of the valve core component is not easily affected by impurities, ensures the normal operation of the air conditioning system 2000, and improves the system reliability.

[0110] Since the heat exchange device 1000 according to the present utility model embodiment has the above-mentioned beneficial technical effects, the air conditioning system 2000 according to the present utility model embodiment can not only achieve miniaturization by integrating the filter element 100, the throttle valve assembly 300 and the heat exchanger 200 into one unit, but also increase the filtration area of ​​the filter element 100 without increasing the axial dimension of the filter element 100 by providing a concave-convex structure 122 on the filter end wall 12 of the filter element 100, thereby improving the filtration efficiency of the filter element 100, and is highly practical.

[0111] An air conditioning system 2000 according to a specific embodiment of the present invention will now be described in detail with reference to the accompanying drawings. It is to be understood that the following description is merely illustrative and should not be construed as limiting the present invention.

[0112] like Figures 1-20As shown, an air conditioning system 2000 according to a specific embodiment of the present invention includes a compressor 2100, a four-way valve 2200, an outdoor radiator 2300, a heat exchange device 1000, an indoor heat exchange unit 2400, and a connecting pipe 2500. The indoor heat exchange unit 2400 includes multiple indoor heat exchangers 2410, multiple indoor valve core components 2420, and multiple indoor filters 2430, with each of the multiple indoor heat exchangers 2410, multiple indoor valve core components 2420, and multiple indoor filters 2430 corresponding to one another.

[0113] The following describes the operation of the air conditioning system 2000 in cooling and heating modes.

[0114] In cooling mode, the flow direction of the heat exchange medium is as follows: Figure 20 As indicated by the solid arrow, compressor 2100 compresses the low-pressure heat exchange medium gas and then discharges the high-pressure heat exchange medium gas. This high-pressure heat exchange medium gas flows sequentially through four-way valve 2200 and outdoor radiator 2300. The heat exchange medium then flows through heat exchange device 1000. The heat exchange medium flowing out from the first heat exchange channel 220 flows into indoor heat exchange unit 2400 and finally returns to compressor 2100; the heat exchange medium flowing out from the second heat exchange channel 230 returns directly to compressor 2100. This process is repeated cyclically, achieving the cooling function at indoor heat exchange unit 2400.

[0115] The following is a detailed description of the flow of the heat exchange medium in the heat exchange device 1000 under the refrigeration mode to illustrate its working principle.

[0116] After the heat exchange medium flows into the heat exchange device 1000 through the connecting pipe 2500, it flows through the filter element 100 at the first mounting base 310. The filter body 10 of the filter element 100 has a concave and convex structure 122 along the axial direction of the filter peripheral wall 11. The heat exchange medium passes through the filter body 10 from the convex side along the filter peripheral wall 11. The concave and convex structure 122 can increase the filtration area of ​​the filter element 100, and can more effectively filter impurities mixed in the heat exchange medium during the flow of the heat exchange medium.

[0117] Then, the heat exchange medium flows through the first flow path 3201 of the valve island 320 and enters the first valve core component 330. In the cooling mode, the first valve core component 330 is fully open (at its maximum opening), so the heat exchange medium is not throttled or depressurized in the first valve core component 330. Subsequently, part of the heat exchange medium flowing through the first valve core component 330 flows directly into the first heat exchange channel 220 through the first heat exchange interface 2201, and the other part enters the second valve core component 340 through the second flow path 3202, and then flows into the second heat exchange channel 230 through the third heat exchange interface 2301. Here, the heat exchange medium between the first valve core component 330 and the first heat exchange channel 220 is called the main heat exchange medium, and the heat exchange medium between the first valve core component 330, the second valve core component 340, and the second heat exchange channel 230 is called the auxiliary heat exchange medium.

[0118] Since the main and auxiliary heat exchange media have already undergone impurity filtration in the filter element 100, the performance of the first valve core component 330 and the second valve core component 340 is not easily affected by impurities. At this time, the opening of the second valve core component 340 is small, thus throttling and depressurizing the auxiliary heat exchange media, reducing its pressure to below the saturation pressure corresponding to the current temperature of the auxiliary heat exchange media. Consequently, the auxiliary heat exchange media completely vaporizes, its temperature decreases, and it then flows into the second heat exchange channel 230 of the heat exchanger 200 through the third heat exchange port 2301. The lower-temperature auxiliary heat exchange media gas and the higher-temperature main heat exchange media liquid exchange heat within the heat exchanger 200, causing the main heat exchange media to cool down. Subsequently, the main heat exchange media flows out of the heat exchanger 200 through the second heat exchange port 2202, and the auxiliary heat exchange media flows out of the heat exchanger 200 through the fourth heat exchange port 2302. The auxiliary heat exchange media then flows back to the compressor 2100 inlet to enter the next cycle. The main heat exchange medium flows into the indoor heat exchange unit 2400. After being filtered by the indoor filter element 2430 and throttled by the indoor valve core component 2420, it flows into the indoor heat exchanger 2410 for heat exchange. The auxiliary heat exchange medium is used to cool the main heat exchange medium. After the heat exchange is completed, the main heat exchange medium returns to the compressor inlet 2100 through the four-way valve 2200.

[0119] In heating mode, the flow direction of the heat exchange medium is as follows: Figure 20As indicated by the dashed arrow, compressor 2100 compresses the low-pressure heat exchange medium gas and then discharges the high-pressure heat exchange medium gas. This high-pressure gas flows through four-way valve 2200 and into indoor heat exchange unit 2400. After heat exchange is completed in indoor heat exchanger 2410, it flows through fully open indoor valve core component 2420 and into heat exchange device 1000. The heat exchange medium flowing out from the first heat exchange channel 220 flows into outdoor radiator 2300 and eventually returns to compressor 2100; the heat exchange medium flowing out from the second heat exchange channel 230 returns directly to compressor 2100. This process is repeated cyclically, achieving heating function at indoor heat exchange unit 2400.

[0120] The following is a detailed description of the flow of the heat exchange medium in the heat exchange device 1000 under heating mode to illustrate its working principle.

[0121] After the heat exchange medium flows into the heat exchange device 1000 through the connecting pipe 2500, it flows through the filter element 100 at the second mounting base 210. The filter body 10 of the filter element 100 has a concave and convex structure 122 along the axial direction of the filter peripheral wall 11. The heat exchange medium passes through the filter body 10 from the convex side along the filter peripheral wall 11. The concave and convex structure 122 can increase the filtration area of ​​the filter element 100, and can more effectively filter impurities mixed in the heat exchange medium during the flow of the heat exchange medium.

[0122] Then, the heat exchange medium flows into the first heat exchange channel 220 of the heat exchanger 200 through the second heat exchange port 2202, and then flows out from the first heat exchange port 2201. A portion of the heat exchange medium flows directly to the first valve core component 330, and another portion flows through the second valve core component 340 and then into the second heat exchange channel 230 through the third heat exchange port 2301. Here, the heat exchange medium between the first valve core component 330 and the first heat exchange channel 220 is called the main heat exchange medium, and the heat exchange medium between the first valve core component 330, the second valve core component 340 and the second heat exchange channel 230 is called the auxiliary heat exchange medium.

[0123] Since the heat exchange medium has been filtered for impurities in the filter element 100 before entering the heat exchanger 200, the operating performance of the first valve core component 330 and the second valve core component 340 is not easily affected by impurities. At this time, the opening of the first valve core component 330 is small, throttling and depressurizing the main heat exchange medium. For the auxiliary heat exchange medium, after being throttled and depressurized in the second valve core component 340, it flows into the second heat exchange channel 230 through the third heat exchange interface 2301, exchanges heat with the main heat exchange medium in the heat exchanger 200, and uses the main heat exchange medium to raise the temperature of the auxiliary heat exchange medium. Then, the heat exchange medium flows out of the heat exchanger 200 through the fourth heat exchange interface 2302 and finally returns to the compressor 2100 side.

[0124] Therefore, in cooling mode, the heat exchanger 1000 can reduce the temperature and pressure of the heat exchange medium entering the indoor heat exchange unit 2400, which helps to improve the cooling performance of the indoor heat exchange unit 2400. In heating mode, the heat exchanger 1000 can increase the temperature and pressure of the heat exchange medium entering the compressor 2100, which helps to increase the suction volume of the compressor 2100. In both cooling and heating modes, the heat exchange medium is filtered by the filter element 100 before flowing through the first valve core component 330 and the second valve core component 340. The filter element 100 has a large filtration area and high filtration efficiency, which helps to reduce the risk of blockage of the first valve core component 330 and the second valve core component 340, and improves the working efficiency of the air conditioning system 2000.

[0125] In addition, the throttle valve assembly 300, heat exchanger 200 and two filter elements 100 are integrated into one heat exchange device 1000, making the heat exchange device 1000 compact in design, occupying less space and with a high degree of integration.

[0126] Other configurations and operations of the filter element 100, heat exchange device 1000, and air conditioning system 2000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0127] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0128] In the description of this specification, the references to terms such as "embodiment," "specific embodiment," and "example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0129] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A filter member, characterized by, Includes a filter body, the filter body comprising: The filter peripheral wall is provided with a first filter hole; The filter end wall has its periphery connected to a first end of the filter peripheral wall in the axial direction. The filter end wall is provided with a second filter hole and has a concave-convex structure along the axial direction of the filter peripheral wall.

2. The filter element of claim 1, wherein, The concave-convex structure includes multiple end walls and at least one connecting wall. The end walls extend horizontally, obliquely, or curvedly along an axis perpendicular to the filter peripheral wall. At least two end walls are staggered along the axial direction of the filter peripheral wall. Adjacent end walls are connected by the connecting wall. Both the end walls and the connecting wall are provided with the second filter hole.

3. The filter element of claim 2, wherein, The plurality of end walls are arranged in sequence along the radial direction of the filter peripheral wall, and the connecting wall is an annular wall extending circumferentially along the filter peripheral wall and used to connect two radially adjacent end walls.

4. The filter element of claim 2, wherein, The plurality of end walls include a first end wall, a second end wall, and a third end wall arranged radially outward in sequence. The outer periphery of the third end wall is connected to the filter peripheral wall. The first end wall is located on the side of the third end wall that is axially away from the filter peripheral wall, and the second end wall is located on the side of the third end wall that is axially close to the filter peripheral wall.

5. The filter element of claim 2, wherein, The end wall and the connecting wall are smoothly connected by a transition section, and the transition section is provided with the second filter hole.

6. The filter element of any one of claims 1-5, wherein, The second end of the filter peripheral wall is connected to an installation section in the axial direction. The filter element also includes an installation bracket with a slot, and the installation section is inserted into the slot.

7. The filter element of claim 6, wherein, From the first end to the second end, the diameter of the filter peripheral wall gradually increases.

8. The filter element of claim 6, wherein, The mounting bracket includes an inner peripheral wall, an outer peripheral wall, and a connecting section. The outer peripheral wall surrounds the inner peripheral wall, and the slot is formed between the inner peripheral wall and the outer peripheral wall. The connecting section connects one end of the inner peripheral wall and one end of the outer peripheral wall, and the slot is formed between the other end of the inner peripheral wall and the other end of the outer peripheral wall.

9. The filter element of claim 8, wherein, The outer peripheral wall includes a first wall portion, a second wall portion, and a third wall portion connected in sequence. One end of the first wall portion is connected to the connecting segment. The second wall portion extends obliquely away from the first wall portion and toward the inner peripheral wall. The groove is formed between the third wall portion and the inner peripheral wall. The first wall portion and the second wall portion constitute a limiting protrusion, which is used for limiting the installation of the filter element.

10. A heat exchange device, characterized by include: The device includes a heat exchanger, a throttle valve assembly, and at least one filter element, wherein at least one of the filter elements is a filter element according to any one of claims 1-9, the throttle valve assembly is mounted on the heat exchanger, at least one of the heat exchanger and the throttle valve assembly is provided with a mounting base, and the filter element is mounted on the mounting base.

11. The heat exchange device according to claim 10, wherein The mounting base has a mounting cavity, and the inner circumferential surface of the mounting cavity is provided with a first limiting boss and a second limiting boss, which are axially spaced apart. The filter element includes a mounting bracket, the filter body is mounted on the mounting bracket, and a limiting protrusion is formed on the outer peripheral surface of the mounting bracket, at least a portion of the limiting protrusion being located between the first limiting protrusion and the second limiting protrusion.

12. The heat exchange device according to claim 11, wherein The inner diameter of the mounting cavity is D1, and the outer diameter of the limiting protrusion is D2, where D1 is greater than D2.

13. The heat exchange device of claim 10, wherein, The heat exchanger has a first heat exchange channel. In cooling mode and heating mode, the heat exchange medium in the first heat exchange channel flows in opposite directions. The throttling valve assembly is connected to and communicates with one end of the first heat exchange channel. The mounting base includes a first mounting base and a second mounting base. The first mounting base is integrated into the throttling valve assembly. The second mounting base is connected to and communicates with the other end of the first heat exchange channel. The filter element is provided in both the first mounting base and the second mounting base.

14. The heat exchange device according to any one of claims 10 to 13, characterized in that The heat exchanger has a first heat exchange channel and a second heat exchange channel. The throttling valve assembly includes a valve island, a first valve core component, and a second valve core component. The valve island has a first flow path and a second flow path. One end of the second flow path and one end of the first heat exchange channel are both connected to one end of the first flow path, and the other end of the second flow path is connected to the second heat exchange channel. The first valve core component and the filter element are disposed in the first flow path, and the second valve core component is disposed in the second flow path.

15. An air conditioning system characterized by, Includes the heat exchange device according to any one of claims 10-14.

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