Filter assembly, heat exchange device and air conditioning system

Abstract

The utility model discloses a filter assembly, heat exchange device and air conditioning system, the filter assembly includes: the mounting seat, the mounting seat has the installation cavity, filter piece, filter piece installs in the installation cavity and is used for carrying out the filtration to the medium that flows through the installation cavity, filter piece includes filter body, and the filter body is cover body structure, and the outer peripheral surface of filter body is equipped with the impurity collection groove to the installation cavity cavity wall, and the impurity collection groove is recessed to the inside of filter body. According to the filter assembly of the utility model embodiment, by setting up the impurity collection groove on the outer peripheral surface of filter body, can collect the impurity after filtering in the impurity collection groove in the process that the medium flows through the filter assembly, makes the impurity not easy to accumulate in each place of filter body even to block the filter hole, is favorable to reduce the flow resistance at the filter assembly, improves the filtration efficiency of filter assembly.

Description

Technical Field

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

[0002] Air conditioning systems may have residual impurities 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, impurities filtered by the filter components in air conditioning systems tend to accumulate on various parts of the filter components' exterior, increasing the flow resistance of the medium at the filter components and even causing the filter pores to become clogged, adversely affecting the filtration efficiency of the filter components. 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 assembly that can uniformly collect filtered impurities in an impurity collection tank, preventing impurities from accumulating in various parts of the filter body or even clogging the filter holes, thereby reducing flow resistance at the filter assembly and improving the filtration efficiency of the filter assembly.

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

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

[0006] A filter assembly according to an embodiment of the present utility model includes: a mounting base having a mounting cavity; and a filter element installed in the mounting cavity for filtering a medium flowing through the mounting cavity. The filter element includes a filter body, which is a cover structure, and an impurity collection groove is provided on the outer peripheral surface of the filter body facing the cavity wall of the mounting cavity. The impurity collection groove is recessed into the interior of the filter body.

[0007] According to the filter assembly of this utility model embodiment, by providing an impurity collection groove on the outer peripheral surface of the filter body, the filtered impurities can be uniformly collected in the impurity collection groove during the process of the medium flowing through the filter assembly, so that the impurities are not easy to accumulate in various parts of the filter body or even block the filter holes, which helps to reduce the flow resistance at the filter assembly and improve the filtration efficiency of the filter assembly.

[0008] In addition, the filter assembly 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 filter body includes a first peripheral wall and a second peripheral wall. The first peripheral wall is provided with filter holes. The second peripheral wall includes a first segment, a second segment and a third segment. The first segment is connected to the first peripheral wall. The third segment and the first segment are axially opposite each other. The second segment connects the radial inner end of the first segment and the radial inner end of the third segment to define the impurity collection groove. At least the second segment and the third segment are continuous extension segments.

[0010] According to some embodiments of the present invention, the first segment is inclined radially inward and away from the first peripheral wall; and / or, the cross section of the second segment parallel to the axial direction is an arc shape that is concave radially inward.

[0011] According to some embodiments of the present invention, the diameter of the first peripheral wall gradually increases along the direction close to the second peripheral wall.

[0012] According to some embodiments of the present invention, the opening end of the cover structure is connected to an installation section, the filter element further includes an installation bracket, the installation bracket is provided with a slot, and the installation section is inserted into the slot.

[0013] According to some embodiments of the present invention, the inner diameter of the mounting cavity is D1, the inner diameter of the mounting bracket is W1, and the diameter of the impurity collection groove is W2, wherein 2×W1-D1≥W2.

[0014] According to some embodiments of the present invention, the filter body includes a first peripheral wall and a second peripheral wall, the second peripheral wall connects the first peripheral wall and the mounting section, the first peripheral wall is provided with filter holes, the second peripheral wall is recessed into the interior of the filter body to define the impurity collection groove, and the mounting bracket abuts against the second peripheral wall.

[0015] According to some embodiments of the present invention, the second peripheral wall includes a first segment, a second segment, and a third segment connected in sequence. The first segment is connected to the first peripheral wall, and the third segment is connected to the mounting segment. The third segment extends perpendicularly to the axial direction and abuts against the mounting bracket.

[0016] 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.

[0017] According to some embodiments of the present invention, 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 outer peripheral wall is formed with a limiting protrusion, and at least a portion of the limiting protrusion is located between the first limiting boss and the second limiting boss.

[0018] 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.

[0019] 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 assembly, wherein at least one of the filter assemblies is a filter assembly according to an embodiment of the present invention, the throttling valve assembly is mounted on the heat exchanger, and at least one of the heat exchanger and the throttling valve assembly is provided with a mounting base for the filter assembly.

[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 integrated into the throttling valve assembly. The first mounting base is provided with the filter element. And / or, the mounting base includes a second mounting base connected to and communicates with the other end of the first heat exchange channel. The second mounting base is provided with the filter element.

[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 respectively 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 assembly 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 partial structural schematic diagram of the filter assembly according to an embodiment of the present utility model;

[0026] Figure 2 yes Figure 1 A cross-sectional view along the direction indicated by line AA;

[0027] Figure 3 yes Figure 2 The center circle shows a magnified view of a portion at point B.

[0028] Figure 4 This is a structural schematic diagram of the filter element according to an embodiment of the present utility model;

[0029] Figure 5 yes Figure 4 The front view;

[0030] Figure 6 This is a schematic diagram of the structure of the mounting bracket according to an embodiment of the present utility model;

[0031] Figure 7 yes Figure 6 The center circle shows a magnified view of point C.

[0032] Figure 8 yes Figure 6 The front view;

[0033] Figure 9 yes Figure 6 Top view;

[0034] Figure 10 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;

[0035] Figure 11 This is a top view of a heat exchanger according to an embodiment of the present utility model;

[0036] Figure 12 yes Figure 11 A cross-sectional view along the direction indicated by line DD;

[0037] Figure 13 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;

[0038] Figure 14 yes Figure 13 The front view;

[0039] Figure 15 yes Figure 14 A cross-sectional view along the direction indicated by line EE;

[0040] Figure 16 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;

[0041] Figure 17 yes Figure 16 The front view of;

[0042] Figure 18 yes Figure 17 A cross-sectional view along the direction indicated by line FF;

[0043] Figure 19 This is a schematic diagram of an air conditioning system according to an embodiment of the present utility model.

[0044] Figure label:

[0045] 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 assembly 2430; connecting pipe 2500;

[0046] Filter assembly 100;

[0047] Mounting base 10; mounting cavity 11; first limiting boss 12; second limiting boss 13;

[0048] Filter element 20;

[0049] Filter body 21; Impurity collection tank 2101;

[0050] First peripheral wall 211; filter pores 2111;

[0051] Second section 212; First section 2121; Second section 2122; Third section 2123;

[0052] Installation section 213;

[0053] Filter end wall 214;

[0054] Mounting bracket 22; slot 2201; inner peripheral wall 221; outer peripheral wall 222; first wall portion 2221; second wall portion 2222; third wall portion 2223; limiting protrusion 2224; connecting section 223;

[0055] 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;

[0056] Throttling valve assembly 300; first mounting base 310; 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

[0057] 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.

[0058] 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.

[0059] 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.

[0060] The filter assembly 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0061] Reference Figures 1-18 As shown, the filter assembly 100 according to an embodiment of the present utility model may include a mounting base 10 and a filter element 20. The material of the mounting base 10 may include stainless steel, plastic or other materials, and the material of the filter element 20 may include stainless steel, plastic or other materials.

[0062] Specifically, the mounting base 10 has a mounting cavity 11, and the filter element 20 is installed in the mounting cavity 11 and used to filter the medium flowing through the mounting cavity 11. The filter element 20 may be provided with filter holes 2111 for filtering the medium. The medium here may refer to a heat exchange medium such as a refrigerant, or other media.

[0063] The filter element 20 includes a filter body 21, which is a cover structure, giving it an inner circumferential surface and an outer circumferential surface. The outer and inner circumferential surfaces of the filter body 21 can extend along a cylindrical, frustum-shaped, prismatic, irregular, or other shape. For example, in some embodiments, such as... Figures 1-2 As shown, the filter body 21 has an outer peripheral surface located on the outside and an inner peripheral surface located on the inside, both of which extend in a frustum shape.

[0064] The medium flowing through the mounting cavity 11 may contain impurities, which can easily clog the flow channels of the medium and affect its normal flow. For example, in some embodiments of the filter assembly 100 used in the heat exchange device 1000, such as... Figures 10-19 As shown, the flow channels and components in the heat exchanger 1000, such as the throttle valve assembly 300, are easily clogged by impurities in the medium, affecting the normal operation of the heat exchanger 1000. However, by installing a filter assembly 100 in the heat exchanger 1000, the medium flowing through the filter assembly 100 is filtered, reducing impurities in the medium and making the heat exchanger 1000 less prone to clogging, thus ensuring its normal operation.

[0065] The filter body 21 has an impurity collection groove 2101 on its outer peripheral surface facing the wall of the mounting cavity 11. The impurity collection groove 2101 is recessed into the filter body 21. The impurity collection groove 2101 can be a continuous or discontinuous annular groove, or a groove of other shapes.

[0066] In some related technologies, after the medium flows through the filter assembly, the impurities in the medium will remain on the upstream side of the filter assembly in the direction of medium flow. After the medium flows for a long time, the impurities are prone to accumulate on various parts of the outside of the filter assembly, increasing the flow resistance of the medium at the filter assembly, and even causing the filter holes to be blocked, which will have an adverse effect on the filtration efficiency of the filter assembly.

[0067] The present application can collect impurities in the medium after it has been filtered by the filter assembly 100 through the impurity collection tank 2101, so that the impurities mixed in the medium can be uniformly collected in the impurity collection tank 2101. Impurities are not easy to accumulate on the outer peripheral surface of the filter assembly 100, which helps to reduce the flow resistance of the medium at the filter assembly 100, reduce the risk of the filter holes 2111 being blocked, and improve the filtration efficiency of the filter assembly 100.

[0068] According to the embodiment of the present utility model, the filter assembly 100, by providing an impurity collection groove 2101 on the outer peripheral surface of the filter body 21, can uniformly collect the filtered impurities in the impurity collection groove 2101 during the process of the medium flowing through the filter assembly 100, so that the impurities are not easy to accumulate in various parts of the filter body 21 or even block the filter holes 2111, which helps to reduce the flow resistance at the filter assembly 100 and improve the filtration efficiency of the filter assembly 100.

[0069] In some embodiments of this utility model, such as Figures 1-5 As shown, the filter body 21 includes a first peripheral wall 211 and a second peripheral wall 212. The first peripheral wall 211 is provided with filter holes 2111. The second peripheral wall 212 is recessed into the interior of the filter body 21 to define an impurity collection groove 2101. This makes the space of the impurity collection groove 2101 larger, so as to collect as many impurities as possible from the medium. This prevents impurities from accumulating in various parts of the filter body 21 or even clogging the filter holes 2111, thereby reducing the flow resistance at the filter assembly 100 and improving the filtration efficiency of the filter assembly 100.

[0070] For example, the second peripheral wall 212 includes multiple segments connected in sequence to define an impurity collection groove 2101. Specifically, the second peripheral wall 212 includes a first segment 2121, a second segment 2122, and a third segment 2123. The first segment 2121 is connected to the first peripheral wall 211, the third segment 2123 is axially opposite to the first segment 2121, and the second segment 2122 connects the radially inner end of the first segment 2121 and the radially inner end of the third segment 2123 to define the impurity collection groove 2101. At least the second segment 2122 and the third segment 2123 are continuously extending segments. In this application, "axial" refers to the axial direction of the filter assembly 100, for example... Figure 5 The up and down directions are shown.

[0071] Here, "continuous extension" refers to the absence of any breaks in the flow; for example, a continuous extension section may not have filter holes 2111. The second section 2122 and the third section 2123 are continuous extension sections, preventing impurities collected in the impurity collection tank 2101 from easily penetrating the tank wall and mixing with the filtered medium inside the filter body 21, thus improving the filtration efficiency. The first section 2121 can be a continuous or discontinuous extension section; for example, the first section 2121 may or may not have filter holes 2111.

[0072] The first peripheral wall 211 is adjacent to the first section 2121. The first section 2121, the second section 2122 and the third section 2123 define the impurity collection tank 2101, so that impurities in the medium filtered by the first peripheral wall 211 can easily accumulate in the impurity collection tank 2101, which is beneficial to improving the efficiency of the filter assembly 100 in collecting impurities. It also prevents impurities from accumulating at various parts of the first peripheral wall 211, causing increased flow resistance or even clogging of the filter holes 2111, thus improving the filtration efficiency of the filter assembly 100.

[0073] 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 attached drawings, and are not restrictions on the actual usage and installation directions of the filter component 100.

[0074] In some embodiments, such as Figures 1-5 As shown, the filter body 21 includes a filter end wall 214. The periphery of the filter end wall 214 is connected to one axial end of the first circumferential wall 211, and the other axial end of the first circumferential wall 211 is connected to the first segment 2121. The filter end wall 214 is provided with filter holes 2111. The filter end wall 214 allows for axial filtration of the medium, which helps to increase the filtration area and filtration direction of the filter body 21, thereby improving the filtration efficiency of the filter assembly 100.

[0075] Of course, the filter body 21 may also not include the filter end wall 214. For example, in some other embodiments, the filter body 21 is formed as a spherical cover structure, a conical cover structure, or a cover structure of other shapes, and the structure of the filter body 21 is diverse.

[0076] In some embodiments of this utility model, such as Figures 1-5 As shown, the first segment 2121 is inclined radially inward and away from the first peripheral wall 211. The first segment 2121 can guide the filtered impurities, making it easier for the filtered impurities to enter the impurity collection tank 2101. This helps to improve the impurity collection efficiency of the filter assembly 100, reduce flow resistance, reduce the risk of impurities clogging the filter holes 2111, and improve filtration efficiency.

[0077] In some embodiments, such as Figures 1-5 As shown, the cross-section of the second segment 2122 parallel to the axial direction is an arc shape that is concave inward along the radial direction. This reduces the processing difficulty of the second segment 2122 and makes it less prone to breakage, thus improving the service life of the filter assembly 100. For example, in some specific embodiments, such as Figure 2 and Figure 5 As shown, the cross-section of the second segment 2122 in the vertical plane is an arc shape that is concave inward along the radial direction.

[0078] In some embodiments, such as Figures 1-5As shown, the diameter of the first peripheral wall 211 gradually increases along the direction close to the second peripheral wall 212, which can guide impurities and facilitate the filtration of impurities to the impurity collection tank 2101 along the direction from the first peripheral wall 211 to the second peripheral wall 212, thereby improving the collection efficiency of the filter assembly 100 for impurities, reducing flow resistance, reducing the risk of impurities clogging the filter holes 2111, and improving filtration efficiency.

[0079] The diameter of the first peripheral wall 211 gradually increases along the direction close to the second peripheral wall 212. It can also increase the gap between the outer peripheral surface of the first peripheral wall 211 and the cavity wall of the mounting cavity 11 along the direction from the second peripheral wall 212 toward the first peripheral wall 211. This helps to reduce the risk of impurities clogging between the first peripheral wall 211 and the cavity wall of the mounting cavity 11, thereby reducing the flow resistance at the first peripheral wall 211 and improving the filtration efficiency of the filter assembly 100.

[0080] For example, in some specific embodiments, such as Figure 5 As shown, the second peripheral wall 212 is located below the first peripheral wall 211, and the diameter of the first peripheral wall 211 gradually increases from top to bottom.

[0081] In some embodiments of this utility model, such as Figures 1-9 As shown, the opening end of the cover structure (e.g.) Figures 1-3 The lower end of the filter body 21 shown is connected to an installation section 213, which may or may not have filter holes 2111. The installation section 213 may be continuous or discontinuous annular, or may be of other shapes.

[0082] The filter element 20 also includes a mounting bracket 22, which has a slot 2201 into which a mounting section 213 is inserted. The mounting section 213 and the slot 2201 can be fixedly connected or detachably connected; for example, the mounting section 213 and the slot 2201 can be fixedly connected by welding. By inserting the mounting section 213 into the slot 2201, the filter body 21 and the mounting bracket 22 can be connected, making installation convenient and reducing the manufacturing difficulty of the filter element 20.

[0083] In some embodiments, such as Figures 1-3As shown, the inner diameter of the mounting cavity 11 is D1, the inner diameter of the mounting bracket 22 is W1, and the diameter of the impurity collection groove 2101 is W2, where 2×W1-D1≥W2. That is, W1-W2≥D1-W1, ensuring that the radial distance between the mounting bracket 22 and the impurity collection groove 2101 is greater than or equal to the radial distance between the cavity wall of the mounting cavity 11 and the mounting bracket 22. This ensures that the radial distance between the impurity collection groove 2101 and the cavity wall of the mounting cavity 11 is sufficiently large, providing a large enough collection space for the impurity collection groove 2101 to accommodate more impurities. This reduces the possibility of impurities overflowing from the impurity collection groove 2101 and accumulating in other parts of the filter body 21 due to insufficient collection space, thereby reducing flow resistance, minimizing the risk of impurities clogging the filter holes 2111, and improving filtration efficiency.

[0084] In systems where the filter assembly 100 is used, such as air conditioning systems 2000, impurities may remain in the system during processing and installation, such as solder residue from welding. The amount of residual impurities is generally limited. Therefore, by using a sufficiently large impurity collection tank 2101, as many impurities as possible can be collected from the medium, making the system where the filter assembly 100 is used less prone to clogging and ensuring high system reliability.

[0085] In some embodiments of this utility model, such as Figures 1-5 As shown, the filter body 21 includes a first peripheral wall 211 and a second peripheral wall 212, with the second peripheral wall 212 connecting the first peripheral wall 211 and the mounting section 213. The first peripheral wall 211 has filter holes 2111, and the second peripheral wall 212 is recessed into the filter body 21 to define an impurity collection groove 2101. The mounting bracket 22 abuts against the second peripheral wall 212. During the insertion of the mounting section 213 into the slot 2201, the insertion depth of the mounting section 213 can be limited by the mounting bracket 22 and the second peripheral wall 212. For example, the mounting section 213 can be confirmed to be inserted into the slot 2201 until the mounting bracket 22 abuts against the second peripheral wall 212, making the operation convenient. It also reduces the likelihood of the first peripheral wall 211 and the second peripheral wall 212 reducing the axial dimension of the filter body 21 outside the mounting bracket 22 due to insertion into the slot 2201, resulting in a larger filtration area of ​​the filter body 21 outside the mounting bracket 22 and higher filtration efficiency.

[0086] In some embodiments, such as Figures 1-5As shown, the second peripheral wall 212 includes a first segment 2121, a second segment 2122, and a third segment 2123 connected in sequence. The first segment 2121 is connected to the first peripheral wall 211, and the third segment 2123 is connected to the mounting segment 213. The third segment 2123 extends perpendicularly to the axial direction and abuts against the mounting bracket 22. During the process of inserting the mounting segment 213 into the slot 2201, the mounting segment 213 is confirmed to be inserted in place until the mounting bracket 22 abuts against the third segment 2123. The third segment 2123 extends perpendicularly to the axial direction and abuts against the mounting bracket 22, making it difficult for the mounting bracket 22 and the third segment 2123 to move relative to each other, thus improving the insertion and limiting effect of the filter body 21 and the mounting bracket 22.

[0087] For example, in some specific embodiments, such as Figures 1-5 As shown, the mounting bracket 22 extends along the axial direction, and the third segment 2123 extends perpendicular to the axial direction, so that after the third segment 2123 abuts against the mounting bracket 22, the third segment 2123 and the mounting bracket 22 are not prone to relative movement, and the limiting effect is good.

[0088] In some embodiments of this utility model, such as Figures 1-9 As shown, the mounting bracket 22 includes an inner peripheral wall 221, an outer peripheral wall 222, and a connecting section 223. The outer peripheral wall 222 surrounds the inner peripheral wall 221, and a slot 2201 is formed between the inner peripheral wall 221 and the outer peripheral wall 222. The connecting section 223 connects one end of the inner peripheral wall 221 and one end of the outer peripheral wall 222, and a groove of the slot 2201 is formed between the other end of the inner peripheral wall 221 and the other end of the outer peripheral wall 222. The inner peripheral wall 221, the outer peripheral wall 222, and the connecting section 223 can be integrally formed, or they can be separately formed and then connected into one piece.

[0089] The inner peripheral wall 221, the outer peripheral wall 222 and the connecting section 223 form a mounting bracket 22 with a slot 2201. The structure is relatively simple and easy to manufacture. For example, the mounting bracket 22 can be mass-produced by stamping, injection molding and other processes, which is convenient to process.

[0090] In some embodiments, such as Figures 1-9 As shown, the inner circumferential surface of the mounting cavity 11 is provided with a first limiting boss 12 and a second limiting boss 13, which are spaced apart axially. The outer circumferential wall 222 of the mounting bracket 22 forms a limiting protrusion 2224, at least a portion of which is located between the first limiting boss 12 and the second limiting boss 13.

[0091] The first limiting boss 12 and the second limiting boss 13 protrude radially into the mounting cavity 11. The limiting protrusion 2224 of the filter element 20 is located between the first limiting boss 12 and the second limiting boss 13, and the first limiting boss 12 and the second limiting boss 13 can abut against the filter element 20. The first limiting boss 12 and the second limiting boss 13 can limit the filter assembly 100 in the axial direction of the mounting cavity 11, so as to securely install the filter element 20 in the mounting cavity 11, making it less likely for the filter element 20 to shake or even fall off, which helps to improve the installation firmness and filtration reliability of the filter element 20 in the mounting base 10. The dimensions of the first limiting boss 12 and the second limiting boss 13 in the axial and radial directions of the mounting base 10 are not limited, as long as they can limit the limiting protrusion 2224 between the first limiting boss 12 and the second limiting boss 13.

[0092] Both the first limiting boss 12 and the second limiting boss 13 can be integrally formed during the molding process of the mounting base 10, or they can be formed by processing the mounting base 10 after it has been molded. For example, in some specific embodiments, such as Figures 1-3 As shown, the first limiting boss 12 is integrally formed during the molding process of the mounting base 10. After the filter element 20 is installed into the mounting cavity 11, the second limiting boss 13 is formed by pressing the wall of the mounting base 10 inward along the radial direction of the mounting cavity 11 at the pre-designed position of the second limiting boss 13. This can limit the filter element 20 after it is installed into the mounting cavity 11, making the installation operation of the filter element 20 more convenient.

[0093] The structure of at least one of the inner peripheral wall 221, the outer peripheral wall 222, and the connecting section 223 can be designed to facilitate the installation of the mounting bracket 22 into the mounting base 10. For example, in some embodiments, such as Figures 1-9 As shown, the outer peripheral wall 222 includes a first wall portion 2221, a second wall portion 2222, and a third wall portion 2223 connected in sequence. One end of the first wall portion 2221 is connected to the connecting section 223. The second wall portion 2222 extends obliquely away from the first wall portion 2221 and towards the inner peripheral wall 221. The third wall portion 2223 forms a slot 2201 with the inner peripheral wall 221. The first wall portion 2221 and the second wall portion 2222 constitute a limiting protrusion 2224, which is used for limiting the installation of the filter element 20. The first wall portion 2221, the second wall portion 2222, and the third wall portion 2223 can be integrally formed or separately formed and then connected as one piece.

[0094] By designing the structure of the outer peripheral wall 222, the third wall portion 2223 of the first wall portion 2221, second wall portion 2222, and third wall portion 2223 is made to be radially closer to the inner peripheral wall 221, so as to form a slot 2201 and realize the connection between the filter body 21 and the mounting. The second wall portion 2222 is made to be radially away from the first wall portion 2221 and outward, so that the first wall portion 2221 is radially further away from the inner peripheral wall 221, which can form a radially outward protruding limiting protrusion 2224. During the process of installing the filter element 20 onto the mounting base 10, the limiting protrusion 2224 can limit the filter element 20 to be fixedly installed on the mounting base 10, so that the filter element 20 is not easy to shake or even fall off during the flow of media, which helps to improve the filtration efficiency and filtration reliability of the filter element 20.

[0095] In some embodiments of this utility model, such as Figures 1-3 As shown, the inner diameter of the mounting cavity 11 is D1, and the outer diameter of the limiting protrusion 2224 is D2. D1 is greater than D2, so that the limiting protrusion 2224 and the mounting base 10 are in clearance fit, which makes it easy to install the filter element 20 into the mounting cavity 11 and convenient to operate.

[0096] The inner diameter of the mounting bracket 22 can be greater than, equal to, or less than the inner diameter of the first limiting boss 12. For example, in some embodiments, such as Figures 1-3 and Figures 14-18 As shown, the inner diameter of the inner peripheral wall 221 of the mounting bracket 22 is larger than the inner diameter of the first limiting boss 12, 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 Figures 1-3 and Figures 14-18 As shown, the inner diameter of the second limiting boss 13 is larger than the inner diameter of the first limiting boss 12, which allows the second limiting boss 13 to abut against the third wall portion 2223 of the outer peripheral wall 222. The inner peripheral wall 221 is placed on the axial outside of the first limiting boss 12, which makes the installation stability of the filter element 20 better.

[0098] This application also proposes a heat exchange device 1000, which includes a filter assembly 100 according to an embodiment of the present invention. The heat exchange device 1000 may also include other filter assemblies. All the above descriptions of the filter assembly 100 can be incorporated into the heat exchange device 1000 according to an embodiment of the present application.

[0099] like Figures 10-19As 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 assembly, wherein the at least one filter assembly is the filter assembly 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 with a lower temperature and a hotter medium with 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 assembly 100 is used to filter impurities mixed in with the heat exchange medium flowing through it.

[0100] The throttle valve assembly 300 is installed on the heat exchanger 200. At least one of the heat exchanger 200 and the throttle valve assembly 300 is provided with a mounting base 10 for the filter assembly 100. The throttle valve assembly 300 can be fixedly installed on the heat exchanger 200 or detachably installed on the heat exchanger 200. Both methods can achieve the integration of the filter assembly 100, the throttle valve assembly 300 and the heat exchanger 200, reduce the space occupied by the filter assembly 100, the throttle valve assembly 300 and the heat exchanger 200 respectively, thereby reducing the overall volume of the heat exchange device 1000 and achieving miniaturization of the heat exchange device 1000.

[0101] In an embodiment where the heat exchanger 200 is provided with a mounting base 10, such as Figures 10-19 As shown, the mounting base 10 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 the integration of the mounting base 10 and the heat exchanger 200.

[0102] In an embodiment where the throttle valve assembly 300 is provided with a mounting base 10, such as Figures 10-19 As shown, the mounting base 10 can be fixedly mounted to the throttle valve assembly 300, or it can be detachably mounted to the throttle valve assembly 300, both methods enabling integration of the mounting base 10 with the throttle valve assembly 300. For example, in some embodiments, such as... Figures 10-19 As shown, the throttle valve assembly 300 includes a valve island 320, which is integrally formed with the mounting base 10.

[0103] Since the filter assembly 100 according to the present invention has the above-mentioned beneficial technical effects, the heat exchange device 1000 according to the present invention can not only achieve miniaturization by integrating the filter assembly 100, the throttle valve assembly 300 and the heat exchanger 200 into one unit, but also collect the filtered impurities in the impurity collection tank 2101 in a unified manner during the process of the medium flowing through the filter assembly 100. This makes it difficult for impurities to accumulate in various parts of the filter body 21 or even block the filter holes 2111, which helps to reduce the flow resistance at the filter assembly 100 and improve the filtration efficiency of the filter assembly 100.

[0104] Heat exchanger 200 is used to exchange heat with the heat exchange medium flowing through it. For example, in some embodiments, such as Figures 10-12 As 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.

[0105] In some embodiments of this utility model, such as Figures 10-19 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 19 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 10-12 and Figure 19 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.

[0106] 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 10 includes a first mounting base 310, which is integrated into the throttle valve assembly 300. The first mounting base 310 is provided with a filter element 20, which can filter the heat exchange medium flowing through one end of the first heat exchange channel 220 and collect impurities.

[0107] In some embodiments, such as Figures 10-19 As shown, the mounting base 10 includes a second mounting base 210, which is connected to 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. The second mounting base 210 is provided with a filter element 20, which can filter the heat exchange medium flowing through the other end of the first heat exchange channel 220 and collect impurities.

[0108] 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 filter elements 20 of the first mounting base 310 and the second mounting base 210 can filter the flow paths at both ends of the first heat exchange channel 220, so that the heat exchange medium can flow into the first heat exchange channel 220 after being filtered by the filter assembly 100 in both the cooling module and heating modes. This reduces the possibility of blockage of the heat exchange medium in the heat exchanger 200 and the throttle valve assembly 300, which helps to improve the flow rate and filtration efficiency of the heat exchange medium, thereby improving the heat exchange efficiency of the heat exchange medium.

[0109] In some embodiments of this utility model, such as Figures 10-19 As 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 respectively 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 10-12 and Figure 19As 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.

[0110] 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 assembly 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.

[0111] 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 component 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.

[0112] For example, in some embodiments, such as Figure 19As shown, the filter assembly 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 assembly 100 at the first flow path 3201 to be located upstream of the first valve core component 330 in cooling mode, enabling the filter assembly 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 assembly 100 is externally connected to the second heat exchange interface 2202, so that in heating mode, this filter assembly 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 assembly 100, reducing the possibility of blockage in the heat exchanger 200.

[0113] It should be noted that the heat exchange medium flows along the axial direction of the filter element 20 from the outside of the cover structure to the inside of the cover structure. This makes it difficult for impurities in the heat exchange medium to accumulate on the inner circumferential surface of the filter element 100 after it flows through the filter element 100, thus preventing the flow of the heat exchange medium. After filtration by the filter element 100, the impurities mixed in the heat exchange medium are more likely to accumulate on the outer circumferential surface of the filter element 100 around the filter element 100, which does not easily 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.

[0114] For example, in some specific embodiments, such as Figures 11-19 As shown, the filter assembly 100 located at the first mounting base 310 has its filter end wall 12 positioned obliquely above the mounting bracket 22. In cooling mode, the heat exchange medium at the filter assembly 100 flows obliquely downward from the obliquely upward direction. The filter assembly 100 located at the second mounting base 210 has its filter end wall 12 positioned above the mounting bracket 22. In heating mode, the heat exchange medium at the filter assembly 100 flows downward from the top.

[0115] like Figure 19 As 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.

[0116] The air conditioning system 2000 may also include components such as a compressor 2100 and a connecting pipe 2500. The heat exchange device 1000 can be connected to other components in the air conditioning system 2000 through the connecting pipe 2500.

[0117] 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.

[0118] 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 assembly 100 according to an embodiment of the present invention. An impurity collection groove 2101 is provided on the outer peripheral surface of the filter body 21 in the filter assembly 100. This allows the filtered impurities to be collected uniformly in the impurity collection groove 2101 during the flow of the medium through the filter assembly 100, preventing impurities from accumulating at various points on the filter body 21 or even clogging the filter holes 2111. This helps reduce the flow resistance at the filter assembly 100, improves the filtration efficiency of the filter assembly 100, reduces the amount of residual impurities in the air conditioning system 2000 mixed in the heat exchange medium, ensures that the working performance of the valve core components is not easily affected by impurities, guarantees the normal operation of the air conditioning system 2000, and improves system reliability.

[0119] 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 assembly 100, the throttle valve assembly 300 and the heat exchanger 200 into one unit, but also can collect the filtered impurities in the impurity collection tank 2101 in a unified manner during the process of the medium flowing through the filter assembly 100, so that the impurities are not easy to accumulate in various parts of the filter body 21 or even block the filter holes 2111, which helps to reduce the flow resistance at the filter assembly 100 and improve the filtration efficiency of the filter assembly 100.

[0120] The following describes in detail, with reference to the accompanying drawings, a specific embodiment of the filter assembly 100, heat exchange device 1000, and air conditioning system 2000 according to the present invention. It should be understood that the following description is merely illustrative and should not be construed as limiting the present invention.

[0121] like Figures 1-19As 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 filter assemblies 2430, with each of the multiple indoor heat exchangers 2410, multiple indoor valve core components 2420, and multiple indoor filter assemblies 2430 corresponding one-to-one. The heat exchange device 1000 includes a filter assembly 100, a heat exchanger 200, and a throttling valve assembly 300.

[0122] The following describes the operation of the air conditioning system 2000 in cooling and heating modes.

[0123] In cooling mode, the flow direction of the heat exchange medium is as follows: Figure 19 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.

[0124] 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.

[0125] After the heat exchange medium flows into the heat exchange device 1000 through the connecting pipe 2500, it flows through the filter assembly 100 at the first mounting base 310. The filter assembly 100 has an impurity collection groove 2101 on the outer peripheral surface of the filter body 21. This groove collects the filtered impurities in the impurity collection groove 2101 during the flow of the medium through the filter assembly 100, making it less likely for impurities to accumulate in various parts of the filter body 21 or even block the filter holes 2111. This helps to reduce the flow resistance at the filter assembly 100, improve the filtration efficiency of the filter assembly 100, and enable the filter assembly 100 to more effectively filter impurities mixed in the heat exchange medium during the flow of the heat exchange medium.

[0126] 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.

[0127] Since the main and auxiliary heat exchange media have already undergone impurity filtration in the filter assembly 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 component 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.

[0128] In heating mode, the flow direction of the heat exchange medium is as follows: Figure 19As 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.

[0129] 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.

[0130] After the heat exchange medium flows into the heat exchange device 1000 through the connecting pipe 2500, it flows through the filter assembly 100 at the second mounting base 210. The filter assembly 100 has an impurity collection groove 2101 on the outer peripheral surface of the filter body 21. This groove collects the filtered impurities in the impurity collection groove 2101 during the flow of the medium through the filter assembly 100, preventing impurities from accumulating in various parts of the filter body 21 or clogging the filter holes 2111. This reduces the flow resistance at the filter assembly 100, improves the filtration efficiency of the filter assembly 100, and enables the filter assembly 100 to more effectively filter impurities mixed in the heat exchange medium during the flow of the heat exchange medium.

[0131] 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.

[0132] Since the heat exchange medium has been filtered for impurities in the filter assembly 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 port 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 port 2302 and finally returns to the compressor 2100 side.

[0133] Therefore, in cooling mode, the heat exchange device 1000 can reduce the temperature and pressure of the heat exchange medium entering the indoor heat exchange unit 2400, which is beneficial to improving the cooling performance of the indoor heat exchange unit 2400. In heating mode, the heat exchange device 1000 can increase the temperature and pressure of the heat exchange medium entering the compressor 2100, which is beneficial to increasing the suction volume of the compressor 2100. In both cooling and heating modes, the heat exchange medium is filtered by the filter assembly 100 before flowing through the first valve core component 330 and the second valve core component 340. The filter assembly 100 can collect the filtered impurities, making it less likely for impurities to accumulate in various parts of the filter body 21 or even block the filter holes 2111. This helps to reduce the flow resistance at the filter assembly 100, improve the filtration efficiency of the filter assembly 100, reduce the risk of blockage of the first valve core component 330 and the second valve core component 340, and improve the working efficiency of the air conditioning system 2000.

[0134] In addition, the throttle valve assembly 300, heat exchanger 200 and two filter assemblies 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.

[0135] Other configurations and operations of the filter assembly 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.

[0136] 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.

[0137] 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.

[0138] 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 assembly, characterized in that, include: Mounting base, the mounting base having a mounting cavity; A filter element is installed in the mounting cavity and is used to filter the medium flowing through the mounting cavity. The filter element includes a filter body, which is a cover structure. An impurity collection groove is provided on the outer peripheral surface of the filter body facing the cavity wall. The impurity collection groove is recessed into the interior of the filter body.

2. The filter assembly according to claim 1, characterized in that, The filter body includes a first peripheral wall and a second peripheral wall. The first peripheral wall has filter holes. The second peripheral wall includes a first section, a second section, and a third section. The first section is connected to the first peripheral wall. The third section and the first section are axially opposite each other. The second section connects the radially inner end of the first section and the radially inner end of the third section to define the impurity collection groove. Among them, at least the second segment and the third segment are continuous extension segments.

3. The filter assembly according to claim 2, characterized in that, The first segment is inclined radially inward and away from the first peripheral wall; and / or, The second section, parallel to the axial direction, is an arc shape that is concave inward along the radial direction.

4. The filter assembly according to claim 2, characterized in that, The diameter of the first peripheral wall gradually increases along the direction closer to the second peripheral wall.

5. The filter assembly according to claim 1, characterized in that, The opening end of the cover structure is connected to an installation section, and the filter element also includes an installation bracket. The installation bracket is provided with a slot, and the installation section is inserted into the slot.

6. The filter assembly according to claim 5, characterized in that, The inner diameter of the mounting cavity is D1, the inner diameter of the mounting bracket is W1, and the diameter of the impurity collection groove is W2, wherein 2×W1-D1≥W2.

7. The filter assembly according to claim 5, characterized in that, The filter body includes a first peripheral wall and a second peripheral wall. The second peripheral wall connects the first peripheral wall and the mounting section. The first peripheral wall is provided with filter holes. The second peripheral wall is recessed into the interior of the filter body to define the impurity collection groove. The mounting bracket abuts against the second peripheral wall.

8. The filter assembly according to claim 7, characterized in that, The second peripheral wall includes a first segment, a second segment, and a third segment connected in sequence. The first segment is connected to the first peripheral wall, and the third segment is connected to the mounting segment. The third segment extends perpendicular to the axial direction and abuts against the mounting bracket.

9. The filter assembly according to claim 5, characterized in that, 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.

10. The filter assembly according to claim 9, characterized in that, The inner circumferential 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, and the outer circumferential wall forms a limiting protrusion, at least a portion of the limiting protrusion is located between the first limiting boss and the second limiting boss.

11. The filter assembly according to claim 10, characterized in that, 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.

12. A heat exchange device, characterized in that, The device includes a heat exchanger, a throttle valve assembly, and at least one filter assembly, wherein at least one of the filter assemblies is a filter assembly according to any one of claims 1-11, the throttle valve assembly is mounted on the heat exchanger, and at least one of the heat exchanger and the throttle valve assembly is provided with a mounting base for the filter assembly.

13. The heat exchange device according to claim 12, characterized in that, The heat exchanger has a first heat exchange channel. In cooling mode and heating mode, the heat exchange medium flows in opposite directions within the first heat exchange channel. 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 seat integrated into the throttling valve assembly. The first mounting seat is provided with the filter element; and / or The mounting base includes a second mounting base, which is connected to and communicates with the other end of the first heat exchange channel, and the second mounting base is provided with the filter element.

14. The heat exchange device according to claim 12 or 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 respectively 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 assembly 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 in that, Includes the heat exchange device according to any one of claims 12-14.

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