End cap assembly, pilot valve, four-way valve assembly, compressor assembly and air conditioner

Abstract

This utility model discloses an end cap assembly, a pilot valve, a four-way valve assembly, a compressor assembly, and an air conditioner. The end cap assembly is used for the pilot valve and includes: an end cap body with a connecting hole extending through the end cap body along its thickness direction; and a filter element located on one side of the end cap body with multiple spaced filter holes. A limiting groove extending circumferentially around the connecting hole is provided on the end face of the end cap body facing the filter element. A portion of the filter element is disposed within the limiting groove, protruding towards the side away from the end cap body. According to the end cap assembly of this utility model, the end cap assembly ensures reliable fixation of the filter element and improves the filtration effect.

Description

Technical Field

[0001] This utility model relates to the field of air handling equipment technology, and more specifically, to an end cap assembly, a pilot valve, a four-way valve assembly, a compressor assembly, and an air conditioner. Background Technology

[0002] In related technologies, the pilot valve has a small internal space, which results in a small filter element area, leading to lower filtration capacity and affecting the filtration effect. 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 an end cap assembly that ensures reliable fixation of the filter element and improves the filtration effect.

[0004] Another objective of this invention is to provide a pilot valve having the aforementioned end cap assembly.

[0005] Another objective of this invention is to provide a four-way valve assembly having the aforementioned pilot valve.

[0006] Another objective of this invention is to provide a compressor assembly having the aforementioned four-way valve assembly.

[0007] Another objective of this invention is to provide an air conditioner having the aforementioned compressor assembly.

[0008] An end cap assembly according to an embodiment of the present invention is used for a pilot valve and includes: an end cap body having a connecting hole extending through the end cap body in the thickness direction; and a filter element located on one side of the end cap body and having a plurality of spaced-apart filter holes, wherein a limiting groove extending in the circumferential direction of the end cap body is provided on the end face of the end cap body facing the filter element, the limiting groove surrounding the connecting hole, a portion of the filter element being disposed within the limiting groove, and the filter element protruding toward the side away from the end cap body.

[0009] According to the end cap assembly of this utility model embodiment, the filter element is located on one side of the end cap body and has multiple spaced filter holes. The end face of the end cap body facing the filter element has a limiting groove extending in the circumferential direction of the end cap body. A part of the filter element is disposed in the limiting groove, and the filter element protrudes towards the side away from the end cap body. The limiting groove can limit the filter element, ensuring that the filter element is reliably fixed inside the pilot valve. Moreover, it can increase the filtration area of ​​the filter element while keeping the size of the filter element in the thickness direction of the end cap body constant, resulting in better filtration effect, which is conducive to improving the filtration efficiency of the filter element and ensuring the working reliability of the pilot valve.

[0010] In addition, the end cap assembly according to the above embodiments of the present invention may also have the following additional technical features:

[0011] According to some embodiments of the present invention, in the end cap assembly, the width of the limiting groove gradually decreases in the direction from the end cap body to the filter element.

[0012] According to some embodiments of the present invention, in the direction from the end cap body to the filter element, the limiting groove includes: a first straight groove, the width of the first straight groove being constant along the thickness direction of the end cap body; an inclined groove, the inclined groove communicating with the first straight groove and having a gradually decreasing width in the direction from the end cap body to the filter element; and a second straight groove, the second straight groove communicating with the end of the inclined groove away from the first straight groove and having a constant width along the thickness direction of the end cap body.

[0013] According to some embodiments of the present invention, the end cap body includes: a sealing portion, wherein the connecting hole is disposed on the sealing portion; a first sealing portion, wherein the end face of the sealing portion facing the filter element is provided with the first sealing portion extending in the circumferential direction of the sealing portion, the connecting hole is located radially inside the first sealing portion, and the limiting groove is provided on the end face of the first sealing portion away from the sealing portion.

[0014] According to some embodiments of the present invention, the width of the first sealing portion gradually decreases in the direction from the end cap body to the filter element.

[0015] According to some embodiments of the present invention, the first sealing portion includes: a first limiting portion extending along the circumferential direction of the sealing portion; and a second limiting portion extending along the circumferential direction of the sealing portion and located radially inside the first limiting portion, wherein the limiting groove is defined between the first limiting portion and the second limiting portion, and an opening of the limiting groove is formed between the end of the first limiting portion away from the sealing portion and the end of the second limiting portion away from the sealing portion.

[0016] According to some embodiments of the present invention, along the thickness direction of the end cap body, the second limiting portion 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 sealing portion. The second wall portion extends obliquely in a direction away from the first wall portion toward a direction close to the first limiting portion. The groove is formed between the third wall portion and the first limiting portion.

[0017] According to some embodiments of the present invention, the outer peripheral wall of the first sealing part and the outer peripheral wall of the plugging part are flush.

[0018] According to some embodiments of the present invention, the end cap body further includes: a second sealing part, the second sealing part being connected to the end face of the plugging part away from the first sealing part and extending along the circumferential direction of the plugging part, the outer peripheral wall of the second sealing part being flush with the outer peripheral wall of the plugging part.

[0019] According to some embodiments of the present invention, a connecting portion is further provided on the end face of the sealing portion where the second sealing portion is provided. The connecting portion surrounds the connecting hole and is located radially inside the second sealing portion. The inner peripheral wall of the connecting portion is flush with the hole wall of the connecting hole.

[0020] According to some embodiments of the present invention, the end of the connecting portion away from the sealing portion is recessed within the end of the second sealing portion away from the sealing portion; or, the end of the connecting portion away from the sealing portion extends beyond the end of the second sealing portion away from the sealing portion; or, the end of the connecting portion away from the sealing portion is flush with the end of the second sealing portion away from the sealing portion.

[0021] According to some embodiments of the present invention, the filter element includes a filter body and a mounting bracket disposed on the filter body. The filter body is provided with the filter hole, the mounting bracket is disposed in the limiting groove, and the mounting bracket is provided with a slot. One end of the filter body is inserted into the slot.

[0022] 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 is arranged around 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 of the slot is formed between the other end of the inner peripheral wall and the other end of the outer peripheral wall.

[0023] 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 slot 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 disposed in the limiting groove.

[0024] A pilot valve according to an embodiment of the present invention includes: a pilot valve body having a cavity and an inlet communicating with the cavity; and an end cap assembly according to an embodiment of the present invention, wherein the end cap body is disposed at the inlet and the filter element is located in the cavity.

[0025] According to the pilot valve of this utility model embodiment, the filter element is located on one side of the end cap body and has multiple spaced filter holes. The end face of the end cap body facing the filter element has a limiting groove extending in the circumferential direction of the end cap body. A part of the filter element is disposed in the limiting groove, and the filter element protrudes towards the side away from the end cap body. The limiting groove can limit the filter element, ensuring that the filter element is reliably fixed inside the pilot valve. Moreover, it can increase the filtration area of ​​the filter element while keeping the size of the filter element in the thickness direction of the end cap body constant, resulting in better filtration effect, which is conducive to improving the filtration efficiency of the filter element and ensuring the working reliability of the pilot valve.

[0026] A four-way valve assembly according to an embodiment of the present invention includes: a four-way valve, the four-way valve including a main valve body and a connector, the main valve body having a main cavity and a first opening, a second opening, a third opening, a fourth opening, a first port, and a second port communicating with the main cavity, the first port and the second port being located on both sides of the main valve body along the moving direction of the connector, the first opening, the second opening, the third opening, and the fourth opening being located between the first port and the second port; a first connecting pipe and a second connecting pipe, the first connecting pipe being connected to the first opening, and the second connecting pipe being connected to the second opening; a pilot valve according to an embodiment of the present invention, the pilot valve body further having a first connecting port, a second connecting port, and a third connecting port communicating with the cavity, the inlet, the first connecting port, the first connecting port, the pilot valve body including a main cavity, the first opening, the second connecting port, the third opening, the fourth opening, the fourth opening, the first port, the third opening, the fourth opening, the fourth opening, the fifth opening, the sixth opening, the fifth opening, the sixth opening, the sixth opening, the seventh ... The second connection port and the third connection port are spaced apart on the pilot valve body; a first capillary tube, one end of which passes through the connection hole and is located on the side of the filter element near the end cap body, and the other end is connected to the first connecting pipe; a second capillary tube, one end of which is connected to the first connection port and the other end is connected to the first port; a third capillary tube, one end of which is connected to the second connection port and the other end is connected to the second port; a fourth capillary tube, one end of which is connected to the third connection port and the other end is connected to the second connecting pipe, and the pilot valve is used to control the first opening to connect to one of the first port and the second port and the third opening to connect to the other of the first port and the second port, so as to drive the connector to move.

[0027] According to the four-way valve assembly of this utility model embodiment, the filter element is located on one side of the end cap body and has multiple spaced filter holes. The end face of the end cap body facing the filter element has a limiting groove extending in the circumferential direction of the end cap body. A part of the filter element is disposed in the limiting groove, and the filter element protrudes towards the side away from the end cap body. The limiting groove can limit the filter element, ensuring that the filter element is reliably fixed inside the pilot valve. Moreover, it can increase the filtration area of ​​the filter element while keeping the size of the filter element in the thickness direction of the end cap body constant, resulting in better filtration effect, which is conducive to improving the filtration efficiency of the filter element and ensuring the working reliability of the pilot valve.

[0028] A compressor assembly according to an embodiment of the present invention includes: a compressor; and a four-way valve assembly according to an embodiment of the present invention, wherein one end of the first connecting pipe in the length direction is connected to the exhaust port of the compressor.

[0029] According to the compressor assembly of this utility model embodiment, the filter element is located on one side of the end cover body and has multiple spaced filter holes. The end face of the end cover body facing the filter element has a limiting groove extending in the circumferential direction of the end cover body. A part of the filter element is disposed in the limiting groove, and the filter element protrudes towards the side away from the end cover body. The limiting groove can limit the filter element, ensuring that the filter element is reliably fixed inside the pilot valve. Moreover, it can increase the filtration area of ​​the filter element while keeping the size of the filter element in the thickness direction of the end cover body constant, resulting in better filtration effect, which is conducive to improving the filtration efficiency of the filter element and ensuring the working reliability of the pilot valve.

[0030] The air conditioner according to an embodiment of the present invention includes the compressor assembly described in the embodiment of the present invention.

[0031] According to the embodiment of the present invention, the air conditioner has a filter element located on one side of the end cover body and having multiple spaced filter holes. The end face of the end cover body facing the filter element has a limiting groove extending in the circumferential direction of the end cover body. A part of the filter element is disposed in the limiting groove, and the filter element protrudes towards the side away from the end cover body. The limiting groove can limit the filter element, ensuring that the filter element is reliably fixed inside the pilot valve. Moreover, it can increase the filtration area of ​​the filter element while keeping the size of the filter element in the thickness direction of the end cover body constant, resulting in better filtration effect, which is conducive to improving the filtration efficiency of the filter element and ensuring the working reliability of the pilot valve.

[0032] 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

[0033] 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:

[0034] Figure 1 This is a perspective view of a four-way valve assembly according to an embodiment of the present utility model.

[0035] Figure 2 This is a perspective view of a four-way valve assembly according to an embodiment of the present utility model, wherein the first connecting pipe is not shown;

[0036] Figure 3 This is a perspective view of the four-way valve assembly according to an embodiment of the present utility model, wherein the first connecting pipe is not shown;

[0037] Figure 4 This is a perspective view of the four-way valve assembly according to an embodiment of the present utility model, wherein the first connecting pipe is not shown;

[0038] Figure 5 This is a perspective view of the four-way valve assembly according to an embodiment of the present utility model, wherein the first connecting pipe is not shown;

[0039] Figure 6 This is a perspective view of the four-way valve assembly according to an embodiment of the present utility model from another angle;

[0040] Figure 7 It is along Figure 6 Sectional view of line AA in the middle;

[0041] Figure 8 This is a partial cross-sectional view of the pilot valve according to the first embodiment of the present utility model;

[0042] Figure 9 yes Figure 8 Enlarged view at point B in the middle;

[0043] Figure 10 This is a perspective view of the end cap assembly according to the first embodiment of the present utility model;

[0044] Figure 11 This is a perspective view of the filter element according to the first embodiment of the present utility model;

[0045] Figure 12 This is a perspective view of the end cap body from one angle according to the first embodiment of the present utility model;

[0046] Figure 13 This is a perspective view of the end cap body from another angle according to the first embodiment of the present utility model;

[0047] Figure 14 yes Figure 13 Enlarged view at point C;

[0048] Figure 15 This is a perspective view of the end cap assembly according to the second embodiment of the present utility model;

[0049] Figure 16 It is along Figure 15 Sectional view of the DD line;

[0050] Figure 17 This is a perspective view of the end cap assembly according to the third embodiment of the present utility model;

[0051] Figure 18 It is along Figure 17 A cross-sectional view of the EE line.

[0052] Figure label:

[0053] 100. Four-way valve assembly; 200. End cap assembly; 300. Four-way valve;

[0054] 1. Main valve body; 11. First opening; 12. Second opening; 13. Third opening; 14. Fourth opening; 15. Main cavity; 16. First port; 17. Second port;

[0055] 2. Pilot valve; 21. End cap body; 211. Connecting hole; 212. Limiting groove; 213. Sealing part; 214. First sealing part; 215. Groove; 216. Second sealing part; 217. Connecting part; 22. Filter element; 221. Filter hole; 23. Pilot valve body; 231. Cavity; 232. Inlet;

[0056] 4. Bracket;

[0057] 5. First connecting pipe; 54. First connecting pipe flare; 55. First connecting pipe interface;

[0058] 6. Second connector; 61. Second connector flared section; 62. Second connector interface section;

[0059] 7. Third connector; 71. Flared end of third connector; 72. Interface of second connector;

[0060] 8. Fourth connector; 81. Flared end of fourth connector; 82. Interface of second connector;

[0061] 91. First straight groove; 92. Inclined groove; 93. Second straight groove; 94. First limiting part; 95. Second limiting part; 951. First wall part; 952. Second wall part; 953. Third wall part; 96. First capillary; 97. Second capillary; 98. Third capillary; 99. Fourth capillary. Detailed Implementation

[0062] 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.

[0063] 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.

[0064] 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.

[0065] The end cap assembly 200 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0066] Reference Figures 8-18 As shown, the end cap assembly 200 according to an embodiment of the present invention is used for the pilot valve 2, and the end cap assembly 200 may include: an end cap body 21 and a filter element 22.

[0067] Specifically, the end cap body 21 is provided with a connecting hole 211, and the connecting hole 211 is along the thickness direction (e.g. Figure 8 As shown in the diagram, the end cap body 21 is penetrated in the left-right direction. The filter element 22 is located on one side of the end cap body 21, and the filter element 22 has multiple (two or more) spaced filter holes 221. Thus, when the medium (e.g., refrigerant) enters the pilot valve 2 through the connecting hole, the filter element 22 can filter the medium, reducing impurities in the medium and preventing impurities from damaging the internal structure of the pilot valve 2. This allows the end cap assembly 200 to simultaneously meet the sealing and filtration requirements, ensuring the normal operation of the pilot valve 2.

[0068] It should be noted that, for ease of description, the directions such as "left" and "right" in this utility model are based on the orientation relationships shown in the accompanying drawings, and are not a limitation on the orientation in actual application.

[0069] In addition, such as Figure 8 , Figure 9 , Figure 13 , Figure 14 , Figure 16 and Figure 18 As shown, the end face of the end cap body 21 facing the filter element 22 (e.g.) Figure 8 A limiting groove 212 is provided on the right end (as shown in the diagram). The limiting groove 212 extends in the circumferential direction along the end cap body 21 and surrounds the connecting hole 211. A portion of the filter element 22 is disposed within the limiting groove 212, with the filter element 22 facing away from the end cap body 21 (e.g., Figure 8 The right side of the diagram shows a protrusion that limits the position of the filter element 22 via the limiting groove 212, ensuring that the filter element 22 is reliably fixed inside the pilot valve 2 and facilitating the overall installation of the end cap assembly 200 on the pilot valve 2, which is beneficial to improving assembly efficiency.

[0070] Meanwhile, by setting a portion of the filter element 22 within the limiting groove 212, the filtration area of ​​the filter element 22 can be increased while maintaining a fixed dimension along the thickness direction of the end cap body 21. This increases the contact area between the filter element 22 and the medium, resulting in better filtration and improved filtration efficiency, thus ensuring the reliable operation of the pilot valve 2.

[0071] In some embodiments, the filter element 22 is welded to the end cap body 21 to ensure reliable connection, avoid problems such as the filter element 22 falling off, ensure the normal operation of the pilot valve 2, and reduce production costs.

[0072] According to the end cap assembly 200 of this utility model embodiment, the filter element 22 is located on one side of the end cap body 21 and has a plurality of spaced filter holes 221. The end face of the end cap body 21 facing the filter element 22 has a limiting groove 212 extending in the circumferential direction of the end cap body 21. A part of the filter element 22 is disposed in the limiting groove 212, and the filter element 22 protrudes towards the side away from the end cap body 21. The limiting groove 212 can limit the filter element 22, ensuring that the filter element 22 is reliably fixed inside the pilot valve 2. Moreover, it can increase the filtration area of ​​the filter element 22 while keeping the size of the filter element 22 in the thickness direction of the end cap body 21 constant, so as to improve the filtration effect, improve the filtration efficiency of the filter element 22, and ensure the working reliability of the pilot valve 2.

[0073] In some embodiments of this utility model, such as Figure 8 , Figure 9 , Figure 16and Figure 18 As shown, the limiting groove 212 is in the direction from the end cap body 21 to the filter element 22 (e.g. Figure 8 The width gradually decreases from left to right. While ensuring that the limiting groove 212 reliably installs and limits the filter element 22, it also makes it easier for the filter element 22 to extend into the limiting groove 212, which can reduce friction and improve assembly efficiency.

[0074] According to some embodiments of this utility model, such as Figure 9 As shown, in the direction from the end cap body 21 to the filter element 22, the limiting groove 212 includes a first straight groove 91, an inclined groove 92, and a second straight groove 93. The width of the first straight groove 91 remains constant along the thickness direction of the end cap body 21. The inclined groove 92 communicates with the first straight groove 91, and the width of the inclined groove 92 gradually decreases in the direction from the end cap body 21 to the filter element 22. The second straight groove 93 and the inclined groove 92 are located at the ends away from the first straight groove 91 (e.g., the ends away from the first straight groove 91). Figure 9 The right end shown is connected, and the width of the second straight groove 93 along the thickness direction of the end cap body 21 remains unchanged. As a result, the second straight groove 93 reliably limits the filter element 22 and facilitates the filter element 22 to extend into the inclined groove 92 and the first straight groove 91 in sequence, which makes assembly convenient, improves assembly efficiency, and facilitates the processing and manufacturing of the limiting groove 212.

[0075] In some embodiments of this utility model, such as Figure 8 , Figure 9 , Figure 13 , Figure 14 , Figure 16 and Figure 18 As shown, the end cap body 21 includes a sealing portion 213 and a first sealing portion 214. A connecting hole 211 is provided on the sealing portion 213. The first sealing portion 214 is provided on the end face of the sealing portion 213 facing the filter element 22. The first sealing portion 214 extends in the circumferential direction of the sealing portion 213. The connecting hole 211 is located radially inside the first sealing portion 214. The first sealing portion 214 can improve the structural strength of the end cap body 21, and the end face of the first sealing portion 214 away from the sealing portion 213 (e.g., the end face away from the sealing portion 213) Figure 8 The right end face shown in the figure is provided with a limiting groove 212, which facilitates the processing and manufacturing of the limiting groove 212, and at the same time makes the structure of the end cover body 21 simple, which helps to reduce production costs.

[0076] According to some embodiments of this utility model, such as Figure 9 As shown, the width of the first sealing part 214 gradually decreases in the direction from the end cap body 21 to the filter element 22, which can prevent the first sealing part 214 from obstructing the flow of the medium, ensure smooth flow of the medium, and help improve the filtration effect.

[0077] In some embodiments where the width of the limiting groove 212 gradually decreases in the direction from the end cap body 21 to the filter element 22, such as... Figure 9 As shown, the width of the first sealing part 214 and the limiting groove 212 gradually decreases in the direction from the end cap body 21 to the filter element 22, which can achieve a matching of structural shapes, making it easy for the first sealing part 214 to adapt to the size change of the limiting groove 212, which is convenient for processing and manufacturing and helps to reduce production costs.

[0078] In some embodiments, such as Figure 9 As shown, the first sealing portion 214 includes a first limiting portion 94 and a second limiting portion 95. The first limiting portion 94 extends along the circumferential direction of the sealing portion 213, and the second limiting portion 95 extends along the circumferential direction of the sealing portion 213, with the second limiting portion 95 located radially inside the first limiting portion 94. A limiting groove 212 is defined between the first limiting portion 94 and the second limiting portion 95. The end of the first limiting portion 94 furthest from the sealing portion 213 (e.g., the end away from the sealing portion 213) Figure 9 The right end shown) and the end of the second limiting part 95 away from the blocking part 213 (e.g., the right end) and the end of the second limiting part 95 away from the blocking part 213 Figure 9 A groove 215 is formed between the right end shown in the figure to form a limiting groove 212, so that the filter element 22 can be extended into the limiting groove 212 through the groove 215 to limit the filter element 22. This also makes the structure of the first sealing element simple and easy to process and manufacture. At the same time, it is easy to process and manufacture the limiting groove 212, which can reduce production costs.

[0079] In some embodiments of this utility model, such as Figure 9 As shown, along the thickness direction of the end cap body 21, the second limiting portion 95 includes a first wall portion 951, a second wall portion 952, and a third wall portion 953 connected in sequence. One end of the first wall portion 951 is connected to the sealing portion 213, which can realize the connection requirement between the second limiting portion 95 and the sealing portion 213. The second wall portion 952 is located in a direction away from the first wall portion 951 (e.g., Figure 9 The right end shown in the diagram extends obliquely toward the first limiting part 94. A groove 215 is formed between the third wall part 953 and the first limiting part 94, so that the filter element 22 can extend into the limiting groove 212 from the groove 215. The third wall surface is convenient to cooperate with the first limiting part 94 to limit the filter element 22, ensuring that the filter element 22 is reliably limited. Moreover, the structure of the second limiting part 95 is simple, which makes it easy to process and manufacture the second limiting part 95 and can reduce production costs.

[0080] According to some embodiments of this utility model, such as Figure 9 As shown, the outer peripheral wall of the first sealing part 214 is flush with the outer peripheral wall of the plugging part 213, which can increase the contact area when the end cap body 21 is installed, thereby increasing the sealing area of ​​the end cap body 21 and ensuring sealing reliability.

[0081] In some embodiments where the first sealing portion 214 includes a first limiting portion 94 and a second limiting portion 95, such as Figure 9 As shown, the first limiting part 94 is flush with the outer peripheral wall of the sealing part 213, which can improve the structural strength of the first limiting part 94 and facilitate the processing and manufacturing of the end cap body 21.

[0082] In some embodiments of this utility model, such as Figure 8 , Figure 12 , Figure 16 and Figure 18 As shown, the end cap body 21 also includes a second sealing portion 216, and the end face of the second sealing portion 216 away from the first sealing portion 214 (e.g., the end face of the sealing portion 213) is also present. Figure 8 The left end face shown in the figure is connected, and the second sealing part 216 extends along the circumferential direction of the sealing part 213. The second sealing part 216 can improve the structural strength of the end cap body 21, and the outer peripheral wall of the second sealing part 216 is flush with the outer peripheral wall of the sealing part 213, which can increase the contact area of ​​the end cap body 21 during installation, thereby increasing the sealing area of ​​the end cap body 21 and ensuring sealing reliability.

[0083] According to some embodiments of this utility model, such as Figure 8 , Figure 12 , Figure 16 and Figure 18 As shown, the end face of the sealing part 213, which has the second sealing part 216, also has a connecting part 217. The connecting part 217 surrounds the connecting hole 211 and is located radially inside the second sealing part 216. The inner peripheral wall of the connecting part 217 is flush with the hole wall of the connecting hole 211. Therefore, when the external connector extends into the connecting hole 211 and connects to the end cap assembly 200, the connecting part 217 can support the external connector, thereby increasing the contact area between the end cap assembly 200 and the external connector, ensuring that the external connector is reliably limited within the connecting hole 211, and preventing problems such as falling off.

[0084] In some embodiments, the external connector is welded to the connecting part 217 to ensure a reliable connection, avoid problems such as the external connector falling off, and reduce production costs.

[0085] In some embodiments of this utility model, such as Figure 8 and Figure 12 As shown, the end of the connecting portion 217 away from the sealing portion 213 (e.g.) Figure 8 The left end shown is recessed into the second sealing portion 216 at the end furthest from the sealing portion 213 (e.g., the left end shown). Figure 8 (as shown on the left); or, as shown on the right. Figure 15 and Figure 16As shown, the end of the connecting portion 217 away from the sealing portion 213 extends beyond the end of the second sealing portion 216 away from the sealing portion 213; or, as Figure 17 and Figure 18 As shown, the end of the connecting part 217 away from the sealing part 213 is flush with the end of the second sealing part 216 away from the sealing part 213. Both can enable the connecting part 217 to support the external pipe, increase the contact area between the end cap assembly 200 and the external pipe, ensure that the external pipe is reliably limited in the connecting hole 211, and can be set according to actual conditions to meet different setting requirements.

[0086] In some embodiments, the filter element 22 includes a filter body and a mounting bracket. The mounting bracket is disposed on the filter body, the filter body is provided with filter holes 221, and the mounting bracket is disposed in the limiting groove 212. This makes the structure of the filter element 22 simple and facilitates the processing and manufacturing of the filter element 22. Furthermore, the limiting groove 212 and the mounting bracket work together to limit the position of the filter element 22 and meet the required limiting requirements.

[0087] In addition, the mounting bracket is provided with a slot, and one end of the filter body is inserted into the slot to realize the connection between the mounting bracket and the filter body. This simplifies the structure of the mounting bracket and the filter body, thereby simplifying the structure of the filter element 22, making it easier to process and manufacture, and helping to reduce production costs.

[0088] According to some embodiments of this utility model, 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 a slot is formed between the inner and outer peripheral walls. The connecting section connects one end of the inner peripheral wall and one end of the outer peripheral wall, and a slot opening with a slot is formed between the other end of the inner peripheral wall and the other end of the outer peripheral wall, so that the filter body can be inserted into the slot through the slot opening to limit the position of the filter body. Moreover, the mounting bracket has a simple structure, is easy to process and manufacture, and can reduce production costs.

[0089] In some embodiments of this utility model, 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 a connecting section. The second wall portion extends in a direction away from the first wall portion and inclines towards the inner peripheral wall. A slot is formed between the third wall portion and the inner peripheral wall, allowing the filter body to extend into the slot from the slot. The third wall surface is convenient to cooperate with the inner peripheral wall to limit the filter body, ensuring reliable limiting of the filter body. Moreover, the structure of the outer peripheral wall is simple, which facilitates the processing and manufacturing of the mounting bracket and can reduce production costs.

[0090] In addition, the first wall portion and the second wall portion constitute a limiting protrusion, which is disposed in the limiting groove 212, so that the limiting groove 212 can limit the limiting protrusion, thereby realizing the limiting of the end cap body 21 on the filter element 22, ensuring reliable limiting and facilitating assembly.

[0091] According to an embodiment of the present invention, the pilot valve 2 includes a pilot valve body 23 and an end cap assembly 200. The pilot valve body 23 has a cavity 231 and an inlet 232. The inlet 232 communicates with the cavity 231. The end cap body 21 is disposed at the inlet 232. The filter element 22 is located inside the cavity 231. The end cap body 21 can seal the inlet 232 to meet the sealing requirements of the pilot valve 2. The filter element 22 can filter the medium entering from the inlet 232, reduce impurities in the medium, avoid damage to the internal structure of the pilot valve 2 by impurities, and ensure the normal operation of the pilot valve 2.

[0092] Since the end cap assembly 200 according to the present utility model embodiment has the above-mentioned beneficial technical effects, the pilot valve 2 according to the present utility model embodiment has a filter element 22 located on one side of the end cap body 21 and provided with a plurality of spaced filter holes 221. The end face of the end cap body 21 facing the filter element 22 is provided with a limiting groove 212 extending in the circumferential direction of the end cap body 21. A part of the filter element 22 is disposed in the limiting groove 212, and the filter element 22 protrudes towards the side away from the end cap body 21. The limiting groove 212 can limit the filter element 22, ensuring that the filter element 22 is reliably fixed inside the pilot valve 2. Moreover, it can increase the filtration area of ​​the filter element 22 while keeping the size of the filter element 22 in the thickness direction of the end cap body 21 constant, so as to improve the filtration effect, improve the filtration efficiency of the filter element 22, and ensure the working reliability of the pilot valve 2.

[0093] The four-way valve assembly 100 according to an embodiment of the present invention includes a four-way valve 300, a first connecting pipe 5, a second connecting pipe 6, a first capillary tube 96, a second capillary tube 97, a third capillary tube 98, a fourth capillary tube 99, and a pilot valve 2 according to an embodiment of the present invention.

[0094] like Figures 1-7As shown, the four-way valve 300 includes a main valve body 1 and a connector. The main valve body 1 has a main cavity 15, a first opening 11, a second opening 12, a third opening 13, a fourth opening 14, a first port 16, and a second port 17. The first opening 11, the second opening 12, the third opening 13, the fourth opening 14, the first port 16, and the second port 17 are connected to the main cavity 15. The first port 16 and the second port 17 are located on both sides of the main valve body 1 along the moving direction of the connector. The first opening 11, the second opening 12, the third opening 13, and the fourth opening 14 are located between the first port 16 and the second port 17. A first connecting pipe 5 is connected to the first opening 11, and a second connecting pipe 6 is connected to the second opening 12. The pilot valve body 23 also has a first connecting port, a second connecting port, and a third connecting port. The first connecting port, the second connecting port, and the third connecting port are connected to the cavity 231. The inlet 232, the first connecting port, the second connecting port, and the third connecting port are spaced apart on the pilot valve body 23.

[0095] One end of the first capillary tube 96 passes through the connection hole 211, and one end of the first capillary tube 96 is located on the side of the filter element 22 near the end cap body 21. The other end of the first capillary tube 96 is connected to the first connecting pipe 5, realizing the connection between the first capillary tube 96 and the pilot valve 2, thereby realizing the connection between the pilot valve 2 and the four-way valve 300, and the filter element 22 can filter the medium flowing out from the first capillary tube 96. One end of the second capillary tube 97 is connected to the first connection port, and the other end of the second capillary tube 97 is connected to the first port 16. One end of the third capillary tube 98 is connected to the second connection port, and the other end of the third capillary tube 98 is connected to the second port 17. One end of the fourth capillary tube 99 is connected to the third connection port, and the other end of the fourth capillary tube 99 is connected to the second connecting pipe 6, realizing the required connection requirements. The pilot valve 2 can control the connection between the first opening 11 and one of the first port 16 and the second port 17, and the connection between the third opening 13 and the other of the first port 16 and the second port 17, thereby driving the connection element to move.

[0096] Therefore, by controlling the connection between the first opening 11 and one of the first port 16 and the second port 17, and the connection between the third opening 13 and the other of the first port 16 and the second port 17, the pilot valve 2 can achieve a pressure difference between the first port 16 and the second port 17 according to the connection status. The first port 16 and the second port 17 are located on both sides of the moving direction of the connector, so the pressure difference between the first port 16 and the second port 17 can drive the connector to move, thereby controlling the connection between the first opening 11 and one of the first port 16 and the second port 17, and the connection between the third opening 13 and the other of the first port 16 and the second port 17, so as to realize the flow path switching of the refrigerant flowing into the four-way valve 300.

[0097] Since the pilot valve 2 according to the present invention has the above-mentioned beneficial technical effects, the four-way valve assembly 100 according to the present invention has a filter element 22 located on one side of the end cap body 21 and provided with a plurality of spaced filter holes 221. The end face of the end cap body 21 facing the filter element 22 is provided with a limiting groove 212 extending in the circumferential direction of the end cap body 21. A part of the filter element 22 is disposed in the limiting groove 212. The filter element 22 protrudes towards the side away from the end cap body 21. The limiting groove 212 can limit the filter element 22, ensuring that the filter element 22 is reliably fixed inside the pilot valve 2. Moreover, it can increase the filtration area of ​​the filter element 22 while keeping the size of the filter element 22 in the thickness direction of the end cap body 21 constant, so as to improve the filtration effect, improve the filtration efficiency of the filter element 22, and ensure the working reliability of the pilot valve 2.

[0098] In some embodiments, such as Figures 1-6 As shown, the four-way valve assembly 100 also includes a bracket 4, which is connected to the main valve body 1 and used to fix the pilot valve 2. Thus, the pilot valve 2 is fixed by the bracket 4, connecting the pilot valve 2 and the main valve body 1 together. This ensures the relative position between the pilot valve 2 and the main valve body 1, making the disassembly and assembly of the four-way valve assembly 100 easier and simpler, reducing installation difficulty. This solves the problem of the cumbersome and complex disassembly and assembly of four-way valve assemblies in related technologies, reducing the labor intensity of workers and shortening the disassembly and assembly time.

[0099] Meanwhile, the first connecting pipe 5 is inserted through the bracket 4, and the second capillary tube 97, the third capillary tube 98, and the fourth capillary tube 99 are all supported on the bracket 4. The bracket 4 can fix the relative positions between the main valve body 1, the pilot valve 2, the second capillary tube 97, the third capillary tube 98, the fourth capillary tube 99, and the first connecting pipe 5. This can prevent relative movement between the pilot valve 2 and the main valve body 1, which would affect the stability of their connection. It can also prevent the first connecting pipe 5, the second capillary tube 97, the third capillary tube 98, and the fourth capillary tube 99 from falling off due to stress, thus ensuring reliable connection and ensuring the working reliability of the four-way valve assembly 100.

[0100] In some embodiments, such as Figure 7 As shown, along the radial direction of the main valve body 1, the second opening 12, the third opening 13 and the fourth opening 14 are located on the same side, and the first opening 11 and the second opening 12 are located on opposite sides. This can optimize the layout of the four-way valve assembly 100, facilitate the flow of the medium, and improve the overall reliability of the four-way valve assembly 100.

[0101] In some embodiments, such as Figures 1-7As shown, the four-way valve assembly 100 also includes a third connecting pipe 7 and a fourth connecting pipe 8. The third connecting pipe 7 is connected to the third opening 13, and the fourth connecting pipe 8 is connected to the fourth opening 14. The end of the first connecting pipe 5 away from the first opening 11 is connected to the exhaust port of the compressor, and the end of the second connecting pipe 6 away from the second opening 12 is connected to the return port of the compressor.

[0102] Thus, the compressor compresses the refrigerant into a high-temperature, high-pressure gas. The high-pressure gaseous refrigerant enters the first connecting pipe 5 through the compressor's exhaust port and flows into the main valve body 1 through the first connecting pipe 5. The main valve body 1 then delivers the refrigerant to the corresponding second connecting pipe 6, third connecting pipe 7, or fourth connecting pipe 8 through the second opening 12, third opening 13, or fourth opening 14 as needed.

[0103] Specifically, when the four-way valve assembly 100 is applied to an air conditioner, the end of the third connecting pipe 7 opposite to the main valve body 1 is connected to the indoor heat exchanger, and the end of the fourth connecting pipe 8 opposite to the main valve body 1 is connected to the outdoor heat exchanger.

[0104] When the air conditioning system is in cooling mode, pilot valve 2 controls the connection between the first opening 11 and the fourth opening 14, and between the second opening 12 and the third opening 13. The compressor compresses the refrigerant into a high-temperature, high-pressure gas. The high-pressure gaseous refrigerant flows into the first connecting pipe 5 through the compressor's exhaust port, and then enters the main valve body 1 through the first connecting pipe 5 and the first opening 11. It then flows into the fourth connecting pipe 8 through the fourth opening 14 and towards the outdoor heat exchanger. The outdoor heat exchanger exchanges heat with the external environment, condensing and dissipating heat. The refrigerant flows within the outdoor heat exchanger and releases heat to the external environment, thus changing from a gaseous state to a liquid state. The high-pressure liquid refrigerant flowing from the outdoor heat exchanger then flows towards the throttling device, which reduces the refrigerant pressure, allowing the low-pressure liquid refrigerant to flow into the indoor heat exchanger. The indoor heat exchanger absorbs heat, and the refrigerant vaporizes within it, changing from a liquid to a gaseous state. This vapor carries away the heat from the airflow passing over the heat exchanger's surface. The low-temperature airflow is then delivered into the room by the indoor unit to achieve cooling. Simultaneously, the low-pressure gaseous refrigerant flows through the third connector 7 to the third opening 13 of the main valve body 1, entering the main cavity 15 of the main valve body 1. Finally, it flows through the second opening 12 and the second connector 6 back to the compressor's return port for further compression, thus forming a refrigerant cycle and achieving the cooling effect of the air conditioning system.

[0105] Similarly, when the air conditioning system is in heating mode, the pilot valve 2 controls the connection between the first opening 11 and the third opening 13, and the connection between the second opening 12 and the fourth opening 14.

[0106] Therefore, the compressor compresses the refrigerant into a high-temperature, high-pressure gas. The high-pressure gaseous refrigerant flows into the first connecting pipe 5 through the compressor's exhaust port, and then enters the main valve body 1 through the first connecting pipe 5 and the first opening 11. The refrigerant then flows from the main valve body 1 through the third opening 13 and the third connecting pipe 7 to the indoor heat exchanger. The indoor heat exchanger exchanges heat with the airflow flowing across its surface. The airflow absorbs heat, and the refrigerant condenses and dissipates heat. The high-temperature airflow is then delivered into the room by the indoor unit to achieve heating. The refrigerant flows within the indoor heat exchanger and releases heat into the indoor environment, thus changing from a gaseous state to a liquid state. The high-pressure liquid refrigerant flowing out of the indoor heat exchanger then flows to the throttling device. The throttling device reduces the refrigerant pressure, allowing the low-pressure liquid refrigerant to flow into the outdoor heat exchanger. The outdoor heat exchanger absorbs heat. The refrigerant absorbs heat and vaporizes inside the outdoor heat exchanger, changing from a liquid to a gaseous state. This carries away the heat flowing through the outdoor environment. The low-pressure gaseous refrigerant flows to the fourth pipe 8 and enters the main valve body 1 through the fourth opening 14. From the main valve body 1, it flows through the second opening 12 and the second pipe 6 to the compressor's return gas opening to return to the compressor for compression again. This forms a refrigerant cycle and achieves the heating effect of the air conditioning system.

[0107] In some embodiments, such as Figures 1-7 As shown, the end of the first connecting pipe 5 facing away from the main valve body 1 has a flared portion and an interface portion. The interface portion is located on the side of the flared portion facing away from the main valve body 1. The flared portion is made of stainless steel, and the interface portion is made of copper. The flared portion and the interface portion are welded together. It can be understood that since the end of the first connecting pipe 5 facing away from the main valve body 1 needs to connect to the compressor's exhaust port, and the flared portion is made of stainless steel, by setting the interface portion, which is welded to the flared portion, to be made of copper, the weld strength between the interface portion and the compressor's exhaust port is ensured, guaranteeing their sealing performance and improving overall reliability.

[0108] In some embodiments, such as Figures 1-7 As shown, the end of the second connecting pipe 6 facing away from the main valve body 1 has a flared portion and a connecting port portion. The connecting port portion is located on the side of the flared portion facing away from the main valve body 1. The flared portion is made of stainless steel, and the connecting port portion is made of copper. The flared portion and the connecting port portion are welded together. It can be understood that since the end of the second connecting pipe 6 facing away from the main valve body 1 needs to connect to the compressor's return port, and the flared portion is made of stainless steel, by setting the connecting port portion (which is welded to the flared portion) to be made of copper, the weld strength between the connecting port portion and the compressor's return port is ensured, guaranteeing their sealing performance and improving overall reliability.

[0109] In some embodiments, such as Figures 1-7 As shown, the end of the third connecting pipe 7 facing away from the main valve body 1 has a flared portion and an interface portion. The interface portion is located on the side of the flared portion facing away from the main valve body 1. The flared portion is made of stainless steel, and the interface portion is made of copper. The flared portion and the interface portion are welded together. It is understandable that since the third connecting pipe 7 needs to connect to the indoor heat exchanger at the end facing away from the main valve body 1, and the flared portion is made of stainless steel, the copper interface portion ensures the weld strength between the interface portion and the indoor heat exchanger, guarantees their sealing performance, and improves overall reliability.

[0110] In some embodiments, such as Figures 1-7 As shown, the end of the fourth connector 8 facing away from the main valve body 1 has a flared portion and an interface portion. The interface portion is located on the side of the flared portion facing away from the main valve body 1. The flared portion is made of stainless steel, and the interface portion is made of copper. The flared portion and the interface portion are welded together. It is understandable that since the end of the fourth connector 8 facing away from the main valve body 1 needs to connect to the outdoor heat exchanger, and the flared portion is made of stainless steel, the copper interface portion ensures the weld strength between the interface portion and the outdoor heat exchanger, guarantees their sealing performance, and improves overall reliability.

[0111] In some embodiments, the four-way valve assembly 100 is made of stainless steel or copper. When the four-way valve assembly 100 is made of stainless steel, due to the high strength and good corrosion resistance of stainless steel, the structure of each part of the four-way valve assembly 100 can reduce the wall thickness, making the spatial layout more compact, thereby optimizing the internal flow channel design, achieving a smaller volume layout, and reducing poor heat exchange, which is in line with the trend of miniaturization of air conditioners. When the four-way valve assembly 100 is made of copper, due to the good ductility of copper, it is easy to stamp, bend and weld, the manufacturing process is mature, and the production cost is relatively low.

[0112] The compressor assembly according to an embodiment of the present invention includes a compressor and a four-way valve assembly 100 according to an embodiment of the present invention. One end of the first connecting pipe 5 in the length direction is connected to the exhaust port of the compressor. Thus, the compressor and the four-way valve assembly 100 can be connected. The compressor compresses the refrigerant into a high-temperature, high-pressure gas. The high-pressure gaseous refrigerant enters the first connecting pipe 5 through the compressor's exhaust port and flows into the main valve body 1. The main valve body 1 then delivers the refrigerant to the corresponding components as needed, enabling control of different refrigerant flow paths.

[0113] Since the four-way valve assembly 100 according to the present invention has the above-mentioned beneficial technical effects, the compressor assembly according to the present invention, with the filter element 22 located on one side of the end cover body 21 and provided with a plurality of spaced filter holes 221, and the end face of the end cover body 21 facing the filter element 22 provided with a limiting groove 212 extending in the circumferential direction of the end cover body 21, a part of the filter element 22 is disposed in the limiting groove 212, and the filter element 22 protrudes towards the side away from the end cover body 21. The limiting groove 212 can limit the filter element 22, ensuring that the filter element 22 is reliably fixed inside the pilot valve 2, and can increase the filtration area of ​​the filter element 22 while the size of the filter element 22 in the thickness direction of the end cover body 21 is constant, so as to improve the filtration effect, improve the filtration efficiency of the filter element 22, and ensure the working reliability of the pilot valve 2.

[0114] The air conditioner according to an embodiment of the present invention includes a compressor assembly according to an embodiment of the present invention. Since the compressor assembly according to an embodiment of the present invention has the aforementioned beneficial technical effects, the air conditioner according to an embodiment of the present invention features a filter element 22 located on one side of the end cover body 21 and provided with a plurality of spaced filter holes 221. A limiting groove 212 extending circumferentially along the end face of the end cover body 21 facing the filter element 22 is provided. A portion of the filter element 22 is disposed within the limiting groove 212, and the filter element 22 protrudes towards the side away from the end cover body 21. The limiting groove 212 can limit the position of the filter element 22, ensuring that the filter element 22 is reliably fixed inside the pilot valve 2. Furthermore, it can increase the filtration area of ​​the filter element 22 while maintaining a fixed dimension along the thickness direction of the end cover body 21, resulting in better filtration effect and improved filtration efficiency, thus ensuring the reliable operation of the pilot valve 2.

[0115] The end cap assembly 200, pilot valve 2, four-way valve assembly 100, compressor assembly, and other components and operations of the air conditioner according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0116] 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.

[0117] 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.

[0118] 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. An end cap assembly, characterized by, For use in pilot valves and including: An end cap body, wherein the end cap body is provided with a connecting hole that extends through the end cap body along the thickness direction; A filter element, located on one side of the end cap body, has multiple spaced filter holes. The end face of the end cap body facing the filter element is provided with a limiting groove extending in the circumferential direction of the end cap body. The limiting groove surrounds the connecting hole. A part of the filter element is disposed in the limiting groove, and the filter element protrudes toward the side away from the end cap body.

2. The end cap assembly according to claim 1, characterized in that, The width of the limiting groove gradually decreases in the direction from the end cap body to the filter element.

3. The end cap assembly according to claim 2, characterized in that, In the direction from the end cap body to the filter element, the limiting groove includes: The width of the first straight groove along the thickness direction of the end cap body remains unchanged; An inclined groove, which communicates with the first straight groove and whose width gradually decreases in the direction from the end cap body to the filter element; The second straight groove is connected to the end of the inclined groove away from the first straight groove and its width remains unchanged along the thickness direction of the end cap body.

4. The end cap assembly according to claim 1, characterized in that, The end cap body includes: A sealing part, wherein the connecting hole is provided on the sealing part; The first sealing part is provided on the end face of the plugging part facing the filter element, extending in the circumferential direction of the plugging part. The connecting hole is located radially inside the first sealing part, and the limiting groove is provided on the end face of the first sealing part away from the plugging part.

5. The end cap assembly according to claim 4, characterized in that, The width of the first sealing portion gradually decreases in the direction from the end cap body to the filter element.

6. The end cap assembly according to claim 5, characterized in that, The first sealing part includes: The first limiting part extends along the circumferential direction of the blocking part; The second limiting part extends along the circumferential direction of the blocking part and is located radially inside the first limiting part. The limiting groove is defined between the first limiting part and the second limiting part. The opening of the limiting groove is formed between the end of the first limiting part away from the blocking part and the end of the second limiting part away from the blocking part.

7. The end cap assembly according to claim 6, characterized in that, Along the thickness direction of the end cap body, the second limiting portion 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 sealing portion. The second wall portion extends obliquely in a direction away from the first wall portion toward a direction close to the first limiting portion. The groove is formed between the third wall portion and the first limiting portion.

8. The end cap assembly according to claim 4, characterized in that, The outer peripheral wall of the first sealing part is flush with the outer peripheral wall of the plugging part.

9. The end cap assembly according to any one of claims 4-8, characterized in that, The end cap body also includes: The second sealing part is connected to the end face of the plugging part away from the first sealing part and extends along the circumferential direction of the plugging part. The outer peripheral wall of the second sealing part is flush with the outer peripheral wall of the plugging part.

10. The end cap assembly according to claim 9, characterized in that, The sealing part is further provided with a connecting part on the end face where the second sealing part is located. The connecting part surrounds the connecting hole and is located radially inside the second sealing part. The inner peripheral wall of the connecting part is flush with the hole wall of the connecting hole.

11. The end cap assembly according to claim 10, characterized in that, The end of the connecting portion away from the blocking portion is recessed into the end of the second sealing portion away from the blocking portion; Alternatively, the end of the connecting portion away from the blocking portion extends beyond the end of the second sealing portion away from the blocking portion; Alternatively, the end of the connecting portion away from the blocking portion is flush with the end of the second sealing portion away from the blocking portion.

12. The end cap assembly according to claim 1, characterized in that, The filter element includes a filter body and a mounting bracket disposed on the filter body. The filter body is provided with the filter holes, and the mounting bracket is disposed within the limiting groove. The mounting bracket is provided with a slot, and one end of the filter body is inserted into the slot.

13. The end cap assembly according to claim 12, 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 opening is formed between the other end of the inner peripheral wall and the other end of the outer peripheral wall.

14. The end cap assembly according to claim 13, characterized in that, 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 slot opening 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 disposed within the limiting groove.

15. A pilot valve, characterized in that, include: A pilot valve body having a cavity and an inlet communicating with the cavity; The end cap assembly according to any one of claims 1-14, wherein the end cap body is disposed at the inlet and the filter element is located within the cavity.

16. A four-way valve assembly, characterized in that, include: A four-way valve includes a main valve body and a connector. The main valve body has a main cavity and a first opening, a second opening, a third opening, a fourth opening, a first port, and a second port communicating with the main cavity. The first port and the second port are located on both sides of the main valve body along the moving direction of the connector, and the first opening, the second opening, the third opening, and the fourth opening are located between the first port and the second port. A first connector and a second connector, wherein the first connector is connected to the first opening and the second connector is connected to the second opening; According to claim 15, the pilot valve body further has a first connection port, a second connection port and a third connection port communicating with the cavity, and the inlet, the first connection port, the second connection port and the third connection port are spaced apart on the pilot valve body; The first capillary tube has one end inserted through the connecting hole and located on the side of the filter element near the end cap body, and the other end connected to the first connecting pipe. The second capillary tube has one end connected to the first connection port and the other end connected to the first port; The third capillary tube has one end connected to the second connection port and the other end connected to the second port; The fourth capillary tube has one end connected to the third connector and the other end connected to the second connector. The pilot valve is used to control the first opening to communicate with one of the first port and the second port, and the third opening to communicate with the other of the first port and the second port, so as to drive the connector to move.

17. A compressor assembly, characterized in that, include: compressor; According to claim 16, one end of the first connecting pipe along its length is connected to the exhaust port of the compressor.

18. An air conditioner, characterized in that, Includes the compressor assembly as described in claim 17.

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