Four-way valve assembly, outdoor unit of heating, ventilation, and air conditioning apparatus, and heating, ventilation, and air conditioning apparatus

Abstract

A four-way valve assembly (1000), an outdoor unit (2000) of a heating, ventilation, and air conditioning apparatus, and the heating, ventilation, and air conditioning apparatus, relating to the technical field of heating, ventilation, and air conditioning apparatuses. The four-way valve assembly comprises a valve body (10), a plurality of electrical components, and an adapter component (100). The plurality of electrical components are in electrical communication with the adapter component (100) via a first line (110), and then the adapter component (100) is in electrical communication with a control device via a second line (120), thereby realizing the electrical communication between the plurality of electrical components and the control device. Compared with conventional means where a plurality of electrical components are individually in electrical communication with a control device via a plurality of lines, the degree of wiring complexity can be reduced, thereby saving the internal space of the outdoor unit of the heating, ventilation, and air conditioning apparatus, reducing the unit size and lowering production costs.

Description

Four-way valve assembly, air conditioning and heating equipment outdoor unit and air conditioning and heating equipment

[0001] Cross-reference to Related Applications

[0002] This application claims priority to and the benefit of the following patent, which is incorporated by reference herein in its entirety:

[0003] Chinese Patent Application No. 202411354284.4, filed on September 26, 2024, entitled “Four-way valve assembly, air conditioning and heating equipment outdoor unit and air conditioning and heating equipment”;

[0004] Chinese Patent Application No. 202422366449.1, filed on September 26, 2024, entitled “Four-way valve assembly, air conditioning and heating equipment outdoor unit and air conditioning and heating equipment”. TECHNICAL FIELD

[0005] The present application relates to the technical field of air conditioning and heating equipment, and in particular to a four-way valve assembly, an air conditioning and heating equipment outdoor unit and an air conditioning and heating equipment. BACKGROUND

[0006] The background information provided in this section is only for the purpose of enhancing the understanding of the present disclosure, and does not necessarily constitute prior art.

[0007] The four-way valve plays a key control and regulation role in air conditioning and heating equipment, ensuring efficient and stable operation of the system while meeting different use environment and demand requirements.

[0008] The four-way valve and the pipeline connected thereto need to be detected for temperature and pressure parameters through electrical devices such as temperature detection members and pressure detection members. The above electrical devices need to be connected to the control device of the air conditioning and heating equipment through respective connection lines. Not only are the connection lines numerous and the wiring complex, but also the body structure of the air conditioning and heating equipment outdoor unit is complex, bulky, and the production cost is high. SUMMARY

[0009] The purpose of the present application is to at least solve the problems of complex body structure, bulky volume and high production cost of the existing air conditioning and heating equipment outdoor unit. The purpose is achieved by the following technical solutions:

[0010] In a first aspect, the application provides a four-way valve assembly applied to a heating and ventilation device having a compressor and a control device, comprising a valve body, a plurality of electrical components and a switching component, the valve body comprising a main valve pipe and a first pipe joint and a second pipe joint arranged on the main valve pipe, the first pipe joint being used for connecting an exhaust pipe, the exhaust pipe being used for connecting an exhaust port of the compressor, the second pipe joint being used for connecting an intake pipe, the intake pipe being used for connecting a return port of the compressor; the plurality of electrical components comprising at least one of a temperature detection component, a pressure switch component and a pressure detection component, each of the electrical components being connected to the first pipe joint and / or the second pipe joint; the switching component being mounted on the main valve pipe, the switching component being electrically connected to each of the electrical components through a first line and being used for electrically connecting the control device through a second line.

[0011] According to the four-way valve assembly provided by the application, the plurality of electrical components are electrically connected to the switching component through the first line, and then the switching component is electrically connected to the control device through the second line, so that the plurality of electrical components are connected to the control device, and compared with the original mode of connecting the plurality of electrical components to the control device one by one through a plurality of lines, the complexity of the lines can be reduced, so that the internal space of the outdoor unit of the heating and ventilation device is saved, and the volume and production cost of the outdoor unit are reduced.

[0012] In addition, the four-way valve assembly provided by the application can have the following additional technical features:

[0013] In some embodiments of the application, the switching component comprises a circuit board, the circuit board being electrically connected to each of the electrical components through the first line and being used for electrically connecting the control device through the second line.

[0014] In some embodiments of the application, the switching component further comprises a mounting seat mounted on the main valve pipe, the mounting seat comprising a bottom wall and a side wall connected to the bottom wall, the bottom wall and the side wall surrounding a receiving groove, and the circuit board being mounted in the receiving groove.

[0015] In some embodiments of the application, the side wall is provided with a first wire passing hole for the first line to pass through, and / or the side wall is provided with a second wire passing hole for the second line to pass through.

[0016] In some embodiments of the application, the switching component further comprises a cover body, the cover body being mounted on the mounting seat and surrounding a cavity with the receiving groove for mounting the circuit board.

[0017] In some embodiments of the present application, the electrical component comprises a first temperature detecting component, which is installed on the first pipe joint and used for detecting the temperature of the first pipe joint; and / or the electrical component comprises a second temperature detecting component, which is installed on the second pipe joint and used for detecting the temperature of the second pipe joint.

[0018] In some embodiments of the present application, the first temperature detecting component comprises a first heat conducting member and a first temperature detecting member, the first heat conducting member is installed on the first pipe joint and in thermal contact with the first pipe joint, the first heat conducting member is provided with a first accommodating cavity, and the first temperature detecting member is installed in the first accommodating cavity and in contact with the inner wall of the first heat conducting member.

[0019] In some embodiments of the present application, one end of the first heat conducting member is provided with a first opening, the first opening is in communication with the first accommodating cavity, and the first temperature detecting member is inserted into the first accommodating cavity through the first opening.

[0020] In some embodiments of the present application, the electrical component comprises a first pressure switch component, the side wall of the first pipe joint is provided with a first interface, and the first pressure switch component is installed on the first interface and in communication with the first pipe joint through the first interface; and / or the electrical component comprises a second pressure switch component, the side wall of the second pipe joint is provided with a second interface, and the second pressure switch component is installed on the second interface and in communication with the second pipe joint through the second interface.

[0021] In some embodiments of the present application, the plurality of electrical components comprises a first pressure detecting component, the side wall of the first pipe joint is provided with a third interface, and the first pressure detecting component is installed on the third interface and in communication with the first pipe joint through the third interface; and / or the plurality of electrical components comprises a second pressure detecting component, the side wall of the second pipe joint is provided with a fourth interface, and the second pressure detecting component is installed on the fourth interface and in communication with the second pipe joint through the fourth interface.

[0022] In some embodiments of the present application, the plurality of electrical components comprises a third pressure detecting component, which is in communication with the first pipe joint and the second pipe joint respectively and used for detecting the pressure information in the first pipe joint and the second pipe joint.

[0023] In some embodiments of the present application, the third pressure detection component comprises a pressure sensing element, a first conducting member and a second conducting member, the side wall of the first pipe joint is provided with a fifth interface, the side wall of the second pipe joint is provided with a sixth interface, one end of the first conducting member is connected with the pressure sensing element and in communication, the other end of the first conducting member is installed in the fifth interface and in communication with the first pipe joint through the fifth interface, one end of the second conducting member is connected with the pressure sensing element and in communication, the other end of the second conducting member is installed in the sixth interface and in communication with the second pipe joint through the sixth interface, the pressure sensing element is configured to detect the pressure information in the first pipe joint through the first conducting member and detect the pressure information in the second pipe joint through the second conducting member.

[0024] In some embodiments of the present application, the second conducting member is provided with a bending portion, the bending portion is bent towards one side of the main valve pipe, the first pipe joint and the second pipe joint, the bending portion, the main valve pipe, the first pipe joint and the second pipe joint enclose an installation space, the four-way valve assembly further comprises a pilot valve, the pilot valve is installed on one side of the four-way valve assembly body and partially located in the installation space.

[0025] In some embodiments of the present application, the four-way valve assembly further comprises a mounting member, the mounting member is provided with a connecting interface for the first pipe joint to pass through, the mounting member is sleeved on the first pipe joint through the connecting interface and connected with the main valve pipe, the pilot valve is connected to one side of the mounting member, and the adapter component is installed on the other side of the mounting member.

[0026] In some embodiments of the present application, the surface of the mounting member facing the main valve pipe is a circular arc surface, and the circular arc surface is fitted with the outer wall surface of the main valve pipe.

[0027] In some embodiments of the present application, the first pipe joint comprises a main pipe section and a one-way valve pipe section in communication, the main pipe section is located between the main valve pipe and the one-way valve pipe section, the main pipe section is connected and in communication with the main valve pipe, the one-way valve pipe section is used for connecting the exhaust port of the compressor, the one-way valve pipe section is internally provided with a valve core, and the valve core is used for controlling the one-way conduction of the one-way valve pipe section from the one-way valve pipe section to the main pipe section.

[0028] In some embodiments of the present application, the valve body further comprises a third pipe joint provided on the main valve pipe, the third pipe joint is used for connecting a first refrigerant flow path, the first refrigerant flow path is used for connecting a heat exchanger of the heating and ventilation equipment, and the four-way valve assembly further comprises a filtering component, the filtering component is installed on the third pipe joint and used for filtering the refrigerant flowing through the third pipe joint.

[0029] In some embodiments of the present application, the filter device is mounted at one end of the third pipe joint away from the main valve pipe.

[0030] In some embodiments of the present application, the filter device comprises a filter cartridge and a first filter element, one end of the filter cartridge is mounted at one end of the third pipe joint away from the main valve pipe, and the first filter element is mounted in the inner cavity of the filter cartridge.

[0031] In some embodiments of the present application, in the direction away from the third pipe joint, the filter cartridge comprises a first variable diameter section and an expanding diameter section connected in sequence, the first variable diameter section is connected with the third pipe joint, and the inner diameter of the first variable diameter section gradually increases from the end close to the third pipe joint to the end away from the third pipe joint, and the inner diameter of the expanding diameter section is greater than that of the third pipe joint.

[0032] In some embodiments of the present application, the filter device comprises a second filter element, and the second filter element is mounted in the third pipe joint.

[0033] In a second aspect, the present application provides an outdoor unit of a heating and ventilation device, comprising a shell, a heat exchanger, a compressor, and the four-way valve assembly according to any one of the above technical solutions; the four-way valve assembly is connected with and communicates with the compressor and the heat exchanger.

[0034] In a third aspect, the present application provides a heating and ventilation device, comprising an indoor unit of a heating and ventilation device and an outdoor unit of a heating and ventilation device according to any one of the above technical solutions, and the indoor unit of a heating and ventilation device and the outdoor unit of a heating and ventilation device are connected through a pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of preferred embodiments, and are not meant to limit the present application. Moreover, the same reference numerals in different figures represent the same or similar components.

[0036] In the drawings:

[0037] FIG. 1 is a structural schematic view of a four-way valve assembly according to an embodiment of the present application;

[0038] FIG. 2 is a structural schematic view of a filter component according to an embodiment of the present application;

[0039] FIG. 3 is an enlarged view of part a of FIG. 2;

[0040] FIG. 4 is a structural schematic view of another filter component according to an embodiment of the present application;

[0041] Fig. 5 is an enlarged view of part b of Fig. 4;

[0042] Fig. 6 is a structural schematic view of a first temperature detecting component according to an embodiment of the present application;

[0043] Fig. 7 is a structural schematic view of a four-way valve assembly according to an embodiment of the present application from a first perspective;

[0044] Fig. 8 is a structural schematic view of the four-way valve assembly according to the embodiment of the present application from a second perspective;

[0045] Fig. 9 is a structural schematic view of a switching component according to an embodiment of the present application;

[0046] Fig. 10 is a structural schematic view of a part of the four-way valve assembly according to an embodiment of the present application;

[0047] Fig. 11 is a structural schematic view of a filtering component according to an embodiment of the present application;

[0048] Fig. 12 is a structural schematic view of a part of a four-way valve assembly according to an embodiment of the present application;

[0049] Fig. 13 is a structural schematic view of a part of another four-way valve assembly according to an embodiment of the present application;

[0050] Fig. 14 is a refrigerant flow path schematic view of a heating and ventilation device according to an embodiment of the present application;

[0051] The reference signs are as follows: 1000, four-way valve assembly; 10, valve body; 11, main valve pipe; 12, first pipe joint; 121, main pipe section; 122, one-way valve pipe section; 13, second pipe joint; 14, third pipe joint; 15, fourth pipe joint; 16, pilot valve; 20, filter component; 21, filter cartridge; 211, first reducing section; 212, expanding section; 213, second reducing section; 22, first filter piece; 23, second filter piece; 30, first pressure switch component; 40, second pressure switch component; 50, first temperature detection component; 51, first heat conduction piece; 511, first opening; 52, first temperature detection piece; 60, second temperature detection component; 70, first pressure detection component; 80, second pressure detection component; 90, third pressure detection component; 91, pressure sensing mechanism; 92, first conduction piece; 93, second conduction piece; 931, bent portion; 100, adapter component; 101, circuit board; 102, mounting seat; 1021, first wire passing hole; 1022, second wire passing hole; 103, cover body; 110, first wire; 120, second wire; 130, mounting piece; 131, connecting hole; 132, raised portion; 200, exhaust pipe; 300, intake pipe; 400, first refrigerant flow path; 410, expansion valve; 420, liquid-side stop valve; 500, second refrigerant flow path; 510, gas-side stop valve; 600, first heat exchanger; 700, second heat exchanger; 800, gas-liquid separator; 900, compressor; 2000, heating and air conditioning equipment outdoor unit; 3000, heating and air conditioning equipment indoor unit. DETAILED DESCRIPTION

[0052] Exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it is to be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0053] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0054] Although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0055] Spatially relative terms, such as "inner", "outer", "inward", "outward", "lower", "bottom", "top", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Such spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0056] Embodiment One

[0057] In combination with FIG. 1, the embodiment provides a four-way valve assembly 1000, which includes a valve body 10, a filter component 20, a first pressure switch component 30, a second pressure switch component 40, a first temperature detection component 50, a second temperature detection component 60, a third pressure detection component 90, and an adapter component 100, and the like functional devices.

[0058] In the embodiment, the valve body 10 includes a main valve pipe 11, a first pipe joint 12, a second pipe joint 13, a third pipe joint 14, a fourth pipe joint 15, and a pilot valve 16. The main valve pipe 11 is a cylindrical structure with two closed ends and an internal cavity. The cavity is provided with a switching mechanism (not shown in the figure). The pilot valve 16 is installed outside the valve body 10. The pilot valve 16 is connected to the cavity of the valve body 10 through capillary tubes at both ends. The pilot valve 16 can drive the switching mechanism to act to reverse direction.

[0059] The first pipe joint 12, the second pipe joint 13, the third pipe joint 14, and the fourth pipe joint 15 are all pipe joint segments extending outward from the side wall of the main valve pipe 11. The first pipe joint 12 is used to connect an exhaust pipe 200 of a heating and ventilation device. The exhaust pipe 200 can be understood as a D pipe used to connect an exhaust port of a compressor 900. The end of the first pipe joint 12 away from the valve body 10 is provided with an air inlet. The air inlet is used to communicate with the exhaust pipe 200. The refrigerant flowing out of the exhaust port of the compressor 900 enters the cavity of the four-way valve assembly 1000 in sequence through the exhaust pipe 200 and the first pipe joint 12.

[0060] The second pipe joint 13 is used to connect an air inlet pipe 300 of a heating and ventilation device. The air inlet pipe 300 can be understood as an S pipe used to connect a return port of the compressor 900. The second pipe joint 13 and the first pipe joint 12 can be located on two sides of the valve body 10 in the radial direction. The refrigerant in the four-way valve assembly 1000 can flow back to the compressor 900 in sequence through the second pipe joint 13 and the air inlet pipe 300.

[0061] The third pipe joint 14 is used to connect a first refrigerant flow path 400. The first refrigerant flow path 400 can be understood as an E pipe used to connect a first heat exchanger. The fourth pipe joint 15 is used to connect a second refrigerant flow path 500. The second refrigerant flow path 500 can be understood as a C pipe used to connect a second heat exchanger. This allows the refrigerant to flow between the first heat exchanger and the second heat exchanger of the heating and ventilation device.

[0062] It should be noted that the basic working principle of the four-way valve assembly 1000 is known to those skilled in the art, and therefore this embodiment does not describe it in detail. Those skilled in the art can understand it by referring to related technology.

[0063] In the related art, a plurality of electrical components are directly connected to a control device of a heating and ventilation device through a line, the control device can be a central control panel (including at least one of PLC, MCU and processor) of an outdoor unit of the heating and ventilation device, each electrical component has at least one line, and the plurality of lines of the plurality of electrical components need to be arranged in a complex manner to be connected to the control device, which occupies the internal space of the body of the outdoor unit of the heating and ventilation device and increases the complexity of the internal structure of the body.

[0064] Therefore, the embodiment adds an adapter component 100, and the electrical components are installed on the first pipe joint 12 and / or the second pipe joint 13, the adapter component 100 is directly or indirectly installed on the main valve pipe 11, and the adapter component 100 is electrically connected to each electrical component through a first line 110, that is, each electrical component is electrically connected to the adapter component 100 through at least one first line 110, and then the adapter component 100 is electrically connected to the control device through a second line 120.

[0065] In this structure, since the electrical components are installed on the first pipe joint 12 and / or the second pipe joint 13, the connection with the adapter component 100 can be realized through a shorter first line 110, and then the adapter component 100 can realize electrical connection with the control device through only one second line 120, which only needs to be arranged in the body, thereby simplifying the line, reducing the space occupied by the line in the body, reducing the size of the body, and reducing the production cost.

[0066] The plurality of electrical components of the embodiment include at least one of a temperature detection component, a pressure switch component and a pressure detection component, for example, the plurality of electrical components include the first pressure switch component 30, the second pressure switch component 40, the first temperature detection component 50, the second temperature detection component 60 and the third pressure detection component 90 in FIG. 1.

[0067] The adapter component 100 of the embodiment can be an electric control box, an adapter box or the like, and the adapter component 100 can also include a circuit board 101 in FIG. 1, and the third pressure detection component 90 can be directly connected to the circuit board 101 through one of the first lines 110, and then electrically connected to the main control panel of the outdoor unit of the heating and ventilation device through the circuit board 101, and the circuit board 101 can be understood as a circuit board for adaptation.

[0068] By connecting the above-mentioned electrical components to the circuit board 101 first, and then connecting the main control panel through the circuit board 101, compared with the mode that the above-mentioned functional devices are directly connected to the control device (not shown in the figure) respectively, the conductive line can be simplified, the internal space of the body of the outdoor unit of the heating and ventilation device is further saved, and the production efficiency is improved and the production cost is reduced.

[0069] The adapter component 100 of the embodiment is located on opposite sides of the main valve pipe 11 with the pilot valve 16, and the adapter component 100 can only include one circuit board 101, which is directly mounted on the main valve pipe 11, or the adapter component 100 is designed to further include the mounting seat 102 and the cover 103 in FIGS. 3 and 4, which form a box structure accommodating the circuit board 101.

[0070] In combination with FIGS. 2-5, unlike the manner of connecting the filter component 20 and the third pipe joint 14 through the intermediate pipeline in the related art, the filter component 20 of the embodiment is directly mounted on the third pipe joint 14, specifically, the filter component 20 is mounted on the end of the third pipe joint 14 away from the main valve pipe 11. The filter component 20 can filter the refrigerant flowing through the third pipe joint 14, and the intermediate pipeline of the filter component 20 and the third pipe joint 14 is omitted, thereby being able to simplify the structure of the body of the HVAC outdoor unit to a certain extent, reduce the overall volume of the body, and also be able to reduce certain production manufacturing costs.

[0071] The filter component 20 of the embodiment includes the filter cartridge 21 and the first filter 22, one end of the filter cartridge 21 is mounted on the end of the third pipe joint 14 away from the main valve pipe 11, and the mounting manner can be integral connection such as welding or bonding, or the filter cartridge 21 and the third pipe joint 14 can be designed as an integral molding structure, the filter cartridge 21 is used to receive the refrigerant flowing out of the third pipe joint 14, and is used to deliver the refrigerant to the heat exchanger of the HVAC indoor unit.

[0072] In some embodiments, the filter cartridge 21 of the embodiment is welded to the third pipe joint 14, and the welding manner can be that the upper end of the filter cartridge 21 is inserted welded to the lower end of the third pipe joint 14 as shown in FIGS. 2 and 3, or the upper end of the filter cartridge 21 is butt welded to the lower end of the third pipe joint 14 as shown in FIGS. 4 and 5.

[0073] The first filter 22 of the embodiment is mounted in the inner cavity of the filter cartridge 21, and the mounting manner of the first filter 22 can be fixed connection or detachable connection, the first filter 22 is used to filter the refrigerant flowing through the filter cartridge 21, and the first filter 22 can be a filter screen or a filter element.

[0074] In combination with FIGS. 2 and 3 again, in some examples, optionally, the radial dimension of the inner wall of the filter cartridge 21 is greater than the radial dimension of the inner wall of the third pipe joint 14.

[0075] Specifically, the filter cartridge 21 of the present embodiment can be designed to include a first variable-diameter section 211, a diameter-increasing section 212, and a second variable-diameter section 213 connected in sequence, one end of the first variable-diameter section 211 is connected to the third pipe joint 14, and the inner diameter of the first variable-diameter section 211 gradually increases in a manner away from the third pipe joint 14, and the minimum inner diameter of the first variable-diameter section 211 is greater than or equal to the inner diameter of the third pipe joint 14.

[0076] The inner diameter of the diameter-increasing section 212 is greater than the inner diameter of the third pipe joint 14, and the inner diameter of the diameter-increasing section 212 is greater than or equal to the maximum inner diameter of the first variable-diameter section 211, the second variable-diameter section 213 is connected to one end of the diameter-increasing section 212 away from the third pipe joint 14, and in a direction away from the third pipe joint 14, the inner diameter of the second variable-diameter section 213 of the present embodiment gradually decreases.

[0077] Since the inner diameter of the filter cartridge 21 is large, the filtering area of the first filter 22 can be increased, and the filtering efficiency can be improved. Moreover, the flow rate of the refrigerant entering the filter cartridge 21 is increased, further improving the filtering efficiency.

[0078] In combination with FIGS. 1 and 6, in distinction to the manner of connecting the temperature detection structure and the first pipe joint 12 through an intermediate pipe in the related art, the first temperature detection component 50 of the present embodiment is directly installed on the first pipe joint 12 to detect the temperature of the first pipe joint 12. In addition, the four-way valve assembly 1000 of the present embodiment can further include a second temperature detection component 60, which is directly installed on the second pipe joint 13 to detect the temperature of the second pipe joint 13.

[0079] The first temperature detection component 50 of the present embodiment includes a first heat-conducting member 51 and a first temperature detection member 52. The first heat-conducting member 51 can be made of a heat-conducting material in whole or in part, which can be iron, copper, aluminum metal or alloy material, or carbon fiber, ceramic, or other heat-conducting material. The first temperature detection member 52 can be a temperature sensor or other temperature detection element. Specifically, the material of the first heat-conducting member 51 can be designed to be the same as that of the first pipe joint 12, and the two are integrally connected by welding to improve the connection stability and heat conduction performance.

[0080] The first heat-conducting member 51 can have a shape similar to a cylinder, a square column, or the like. The outer side of the first heat-conducting member 51 is provided with a circular arc surface that is adapted to the outer wall surface of the first pipe joint 12, so as to facilitate the installation of the first heat-conducting member 51 on the first pipe joint 12. The inside of the first heat-conducting member 51 is provided with a first accommodating cavity, and the first temperature detection member 52 is installed in the first accommodating cavity and is in close contact with the inner wall of the first heat-conducting member 51. When temperature detection is performed, the first heat-conducting member 51 transmits the temperature of the first pipe joint 12 to the first temperature detection member 52, achieving detection of the temperature of the first pipe joint 12.

[0081] In order to facilitate installation of the first temperature detecting member 52 and facilitate connection of the first temperature detecting member 52 to other control structures through a wire, a first opening 511 can be further provided at one end (the upper end in the figure) of the first heat conducting member 51 of the embodiment, and the first temperature detecting member 52 is inserted into the first accommodating cavity through the first opening 511. After the first temperature detecting member 52 is installed into the first accommodating cavity, the first temperature detecting member 52 needs to be tightly attached or pressed against the inner wall surface of the first heat conducting member 51. Therefore, the shape of the first temperature detecting member 52 needs to match the shape of the first accommodating cavity.

[0082] The structure of the second temperature detecting member 60 of the embodiment can be the same as the first temperature detecting member 50 described above, and therefore the second temperature detecting member 60 will not be described in detail in the embodiment, and those skilled in the art can understand the second temperature detecting member 60 by referring to the first temperature detecting member 50.

[0083] It should be noted that the "direct installation" described in the embodiment means that at least part of one component is directly connected to another component. For example, at least part of the first temperature detecting member 50 of the embodiment is directly connected to the first pipe joint 12. Similarly, the direct installation of the following embodiments can also be understood in this way.

[0084] In order to further optimize the internal space of the body of the outdoor unit of the heating and ventilation equipment and simplify the structure, the one-way valve is directly integrated into the first pipe joint 12 in the embodiment. Accordingly, the length of the first pipe joint 12 needs to be lengthened. Therefore, the first pipe joint 12 is designed to include a main pipe segment 121 and a one-way valve pipe segment 122 that are connected and communicated. The main pipe segment 121 and the one-way valve pipe segment 122 can be directly integrally formed during processing or connected into an integral whole by welding. The main pipe segment 121 is located between the valve body 10 and the one-way valve pipe segment 122 and is connected and communicated with the valve body 10.

[0085] The one-way valve of the embodiment functions to allow the refrigerant to enter the four-way valve assembly 1000 only from the compressor 900 and prevent the refrigerant from flowing back from the four-way valve assembly 1000 to the compressor 900. The end of the one-way valve pipe segment 122 away from the main pipe segment 121 is provided with the above-mentioned gas inlet port for connecting the exhaust port of the compressor 900. The one-way valve pipe segment 122 is internally provided with a valve core (not shown in the figure), which is used to open and close the communication between the gas inlet port and the main pipe segment 121.

[0086] Further, the one-way valve pipe segment 122 can be internally provided with a valve seat and a blocking ring (not shown in the figure). The valve core can move in the axial direction of the one-way valve pipe segment 122 under the flow of the refrigerant. When the valve core moves to cooperate with the valve seat, the communication between the gas inlet port and the main pipe segment 121 is cut off. When the valve core moves to cooperate with the blocking ring, the valve core has a flow channel that guides the gas inlet port and the main pipe segment 121.

[0087] The structure of directly integrating the one-way valve in the first pipe joint 12 omits the intermediate connecting pipeline, thereby being capable of simplifying the structure of the machine body, reducing the overall volume of the machine body, and also being capable of reducing certain production manufacturing costs to a certain extent.

[0088] In combination with FIG. 1, unlike the related art in which the pressure switch is connected through an intermediate structure (such as a bracket, a pipeline, etc.), the first pipe joint 12 is provided with a first interface, and the second pipe joint 13 is provided with a second interface. The first pressure switch component 30 is installed in the first interface and is in communication with the first pipe joint 12 through the first interface. The second pressure switch component 40 is installed in the second interface and is in communication with the second pipe joint 13 through the second interface.

[0089] It should be noted that, since the interfaces such as the first interface and the second interface are shielded by the first pressure switch component 30 and the second pressure switch component 40, the interface structures of the first interface and the second interface are not marked in the drawings in the present embodiment.

[0090] The first pressure switch component 30 can be a high-pressure pressure switch, and the second pressure switch component 40 can be a low-pressure pressure switch. The high-pressure information refers to the pipeline pressure range, which can be between tens to hundreds of pascals (Pa) to several hundred kilopascals (kPa). The specific range depends on the design pressure of the air conditioning system and the type of refrigerant used. For example, for common refrigerants, the high-pressure range can be between 3000 kPa (3 MPa) and 4500 kPa (4.5 MPa). The low-pressure information can be the pipeline pressure between tens of kilopascals to several hundred kilopascals, for example, between 300 kPa (0.3 MPa) and 700 kPa (0.7 MPa). The "low pressure" and "high pressure" in the remaining embodiments are understood in the same way as in the present embodiment.

[0091] The first pressure switch component 30 monitors and controls the high-pressure state of the heating and ventilation equipment to ensure that the system operates within a safe range. Specifically, the first pressure switch component 30 detects the pressure information in the first pipe joint 12. When the pressure exceeds the preset safety threshold, the first pressure switch component 30 will cut off the power supply or send a signal to stop the operation of the compressor 900.

[0092] The second pressure switch component 40 monitors and controls the low-pressure state of the heating and ventilation equipment to ensure that the system operates within a safe range. Specifically, the second pressure switch component 40 detects the pressure information in the second pipe joint 13. When the pressure is lower than the preset safety threshold, the second pressure switch component 40 will cut off the power supply or send a signal to stop the operation of the compressor 900. The second pressure switch component 40 can prevent the compressor 900 from operating abnormally due to a low-pressure state, such as liquid operation or poor refrigeration effect.

[0093] In combination with FIG. 1, different from the prior art in which the pressure sensor and the four-way valve assembly 1000 are connected by an intermediate structure (such as a bracket, a pipeline, etc.), the third pressure detection component 90 of the present embodiment is directly integrated on the four-way valve assembly 1000, one part of the third pressure detection component 90 is mounted on the first pipe joint 12, and the other part is mounted on the second pipe joint 13, and the third pressure detection component 90 is configured to be capable of simultaneously detecting the pressure information of the first pipe joint 12 and the second pipe joint 13.

[0094] Such a third pressure detection component 90 includes a pressure sensing mechanism 91, a first conducting member 92, and a second conducting member 93. The pressure sensing mechanism 91 can include one or two pressure sensing elements. When the number of pressure sensing elements is one, the circuit of one pressure sensing element can process and distinguish the pressure signals from the first pipe joint 12 and the second pipe joint 13, respectively. The pressure sensing element is located in the housing, and therefore is not shown in the figure. Of course, two pressure sensing elements can also be integrated in one sensor housing, one of which directly communicates with the first conducting member 92, and the other directly communicates with the second conducting member 93, and the two pressure sensing elements process the pressure signals from the first pipe joint 12 and the second pipe joint 13, respectively (such an embodiment is not shown in the figure).

[0095] The pressure sensing element of the present embodiment can be located in the sensor housing, one end of the first conducting member 92 is connected to and communicates with the housing of the pressure sensing element, and the other end of the first conducting member 92 is connected to and communicates with the fifth interface of the first pipe joint 12. Similarly, one end of the second conducting member 93 of the present embodiment is connected to and communicates with the pressure sensing element, and the other end of the second conducting member 93 is connected to and communicates with the sixth interface of the second pipe joint 13, and the pressure sensing element is configured to detect the pressure information in the first pipe joint 12 through the first conducting member 92 and to detect the pressure information in the second pipe joint 13 through the second conducting member 93.

[0096] The first conducting member 92 and the second conducting member 93 can be rigid or flexible pipe structures, which are part of the third pressure detection component 90, and are used to assist the pressure sensing element to collect the pressure information of the first pipe joint 12 and the second pipe joint 13.

[0097] Such a structure integrates the third pressure detection component 90 and the second pressure detection component 80 in the first embodiment into only the third pressure detection component 90 to realize the pressure detection of the first pipe joint 12 and the second pipe joint 13, which can further simplify the structure, improve the integration of the four-way valve assembly 1000, and reduce the volume of the machine body.

[0098] In some examples, the first conducting part 92 can be integrally connected to the first pipe joint 12, and the second conducting part 93 can be integrally connected to the second pipe joint 13. The integral connection can be achieved by welding, bonding, hot melting, or other methods.

[0099] In order to further optimize the space and avoid the structure of the pilot valve 16, in some examples, the second conducting part 93 of the present embodiment is provided with a bending part 931, which faces the valve body 10, the first pipe joint 12 and the second pipe joint 13, and is spaced apart from part of the valve body 10, part of the first pipe joint 12 and part of the second pipe joint 13, so that the bending part 931, the valve body 10, part of the valve body 10, part of the first pipe joint 12 and part of the second pipe joint 13 form an installation space.

[0100] Part of the pilot valve 16 of the present embodiment is located in the installation space, so that the second conducting part 93 and the pilot valve 16 reduce the possibility of interfering with each other, and when the second conducting part 93 is a rigid structure, the second conducting part 93 can also be used to support and protect the outer side of the pilot valve 16.

[0101] Embodiment two

[0102] In combination with FIGS. 7-10, the difference between the present embodiment and example one is that the filter part 20 is directly installed in the third pipe joint 14. Specifically, the filter part 20 of the present embodiment includes a second filter part 23, which can be a filter screen or a filter core structure, and the second filter part 23 is directly installed in the third pipe joint 14, so that the filter cartridge 21 can be omitted compared with the filter part 20 in example one.

[0103] In combination with FIG. 11, the adapter part 100 of the present embodiment can further include a mounting seat 102 and a cover 103. The mounting seat 102 includes a bottom wall and a side wall connected to the periphery of the bottom wall, and the cover 103 is covered on the mounting seat 102. The mounting method can be a clamping, bolt connection or other convenient disassembly method. The mounting seat 102 and the cover 103 form a box structure, and the cover 103 and the accommodating groove of the mounting seat 102 form a cavity for mounting the circuit board 101. In addition, a wire hole needs to be provided on the cover 103 or the mounting seat 102 to facilitate the connection between the above-mentioned functional devices and the circuit board 101.

[0104] Specifically, the first wire hole 1021 and the second wire hole 1022 can be provided on the side wall of the mounting seat 102 of the present embodiment. The first wire hole 1021 is used for the first line 110 to pass through one end and be inserted into the circuit board 101, and the second wire hole 1022 is used for the second line 120 to pass through one end and be inserted into the circuit board 101.

[0105] Embodiment three

[0106] In combination with FIG. 12 and FIG. 13 (the adapter component 100 is not shown), the difference between this embodiment and the first embodiment and the second embodiment is the difference in the pressure detection structure. The pressure detection structure of this embodiment includes a first pressure detection component 70 and a second pressure detection component 80. The first pressure detection component 70 is installed on the first pipe joint 12 and communicates with the first pipe joint 12. The second pressure detection component 80 is installed on the second pipe joint 13 and communicates with the second pipe joint 13.

[0107] The first pressure detection component 70 is used to detect the pressure information in the first pipe joint 12. The pressure information can be high pressure information in the first pipe joint 12. Through the high pressure information, the flow rate of the fluid can be calculated. Moreover, the high pressure information can be fed back to the control system for automatic or manual adjustment of the opening degree of the four-way valve assembly 1000 to achieve the required flow rate adjustment of the system. In addition, through the first pressure detection component 70, the fluid pressure change in the system can be monitored in real time, which helps to diagnose problems such as pipe blockage, valve failure or system leakage in a timely manner. The above-mentioned high pressure information refers to a pressure range that can be between tens to hundreds of pascals (Pa) to several hundred kilopascals (kPa). The specific range depends on the design pressure of the air conditioning system and the type of refrigerant used. For example, for common refrigerants, the high pressure range can be between 3000 kPa (3 MPa) and 4500 kPa (4.5 MPa).

[0108] In this embodiment, the first pressure detection component 70 is directly installed on the third interface of the first pipe joint 12 and communicates with the first pipe joint 12 through the third interface. The intermediate structure for connecting the first pressure detection component 70 with the four-way valve assembly 1000 is omitted, thereby further simplifying the machine body structure, reducing the overall volume of the machine body, and also reducing certain production manufacturing costs.

[0109] The second pressure detection component 80 has the same or similar structure as the first pressure detection component 70 described above. For example, both can be pressure sensors. The detection range of the second pressure detection component 80 can be different from that of the first pressure detection component 70. For example, the first pressure detection component 70 can detect high pressure information, and the second pressure detection component 80 is used to detect low pressure information of the second pipe joint 13.

[0110] Similarly to the installation method of the first pressure detection component 70, the second pressure detection component 80 of this embodiment is also directly installed on the fourth interface of the second pipe joint 13 and communicates with the second pipe joint 13 through the fourth interface, thereby further saving space in the machine body and simplifying the structure.

[0111] The first pressure detection component 70 and the second pressure detection component 80 of the embodiment can each include a shell and an internal pressure sensing element, the shell can be made of the same material or similar material as the first pipe joint 12 and the second pipe joint 13, the first pressure detection component 70 and the second pressure detection component 80 in FIGS. 6 and 7 have similar structures, except that the shell of the first pressure detection component 70 and the second pressure detection component 80 in FIG. 6 further includes a pipe segment for connecting and communicating with the first pipe joint 12 or the second pipe joint 13, which is different from the existing intermediate pipe for connecting the sensor and the four-way valve assembly 1000, the pipe segment of the shell in the embodiment has a small length and belongs to the shell or the sensor.

[0112] In some examples, the first pressure detection component 70 can be integrally connected with the first pipe joint 12, and the second pressure detection component 80 can also be integrally connected with the second pipe joint 13, the integrally connected manner in the embodiment includes welding, bonding, hot melt connection, etc., and can also include an integrally formed manner during processing.

[0113] In addition, the four-way valve assembly 1000 in the embodiment and the embodiments can further include a mounting member 130, the mounting member 130 is provided with a connecting hole 131 through which the first pipe joint 12 passes, the mounting member 130 is sleeved on the first pipe joint 12 through the connecting hole 131, and the pilot valve 16 and the mounting seat 102 are respectively installed on the front and rear sides of the mounting member 130.

[0114] The mounting member 130 of the embodiment can have a plate-like or sheet-like structure, in order to be more stably connected to the main valve pipe 11, the surface of the mounting member 130 of the embodiment facing the main valve pipe 11 can be designed as a circular arc surface, which is fitted with the outer wall surface of the main valve pipe 11. Further, the mounting member 130 and the outer wall of the main valve pipe 11 can be connected by bolts, screws or other components, thereby further improving the installation stability of the mounting member 130 and the pilot valve 16. The end of the mounting member 130 close to the pilot valve 16 is provided with a raised portion 132 bent relative to the mounting member 130, and the pilot valve 16 can be installed on the raised portion 132 by bolts or other components and fitted with the outer wall of the main valve pipe 11.

[0115] Embodiment Four

[0116] In combination with FIG. 14, the embodiment provides an air conditioning equipment outdoor unit 2000, which includes a shell (not shown in the figure), a first heat exchanger 600, a gas-liquid separator 800, a compressor 900 (not shown in the figure), and a four-way valve assembly 1000 as described in any one of the above-mentioned embodiments one to three; the four-way valve assembly 1000 is connected and communicated with the compressor 900 and the heat exchanger, respectively.

[0117] Specifically, the first pipe joint 12 of the four-way valve assembly 1000 can be connected to the exhaust port of the compressor 900 through the exhaust pipe 200, the second pipe joint 13 can be connected to the return port of the compressor 900 through the suction pipe 300, the third pipe joint 14 can be connected to the first heat exchanger 600 through the first refrigerant flow path 400, and the fourth pipe joint 15 can be connected to the second heat exchanger 700 of the air conditioning indoor unit 3000 through the second refrigerant flow path 500.

[0118] The refrigerant in the compressor 900 enters the main valve pipe 11 through the suction pipe 300 and the second pipe joint 13 in sequence, then flows into the first refrigerant flow path 400 through the third pipe joint 14, and is processed by the expansion valve 410 and the liquid-side stop valve 420 on the first refrigerant flow path 400, and then flows into the first heat exchanger 600 and the second heat exchanger 700. The refrigerant in the second heat exchanger 700 is processed by the gas-side stop valve 510 on the second refrigerant flow path 500, and then enters the fourth pipe joint 15, and then returns to the main valve pipe 11, and then enters the gas-liquid separator 800 through the first pipe joint 12 and the exhaust pipe 200 for oil separation, and then returns to the compressor again to complete the refrigerant circulation.

[0119] For the structure of the air conditioning outdoor unit 2000 except the four-way valve assembly 1000, please refer to the related technology, which will not be described here.

[0120] Embodiment Five

[0121] In combination with FIG. 14, the embodiment provides an air conditioning device, which includes the air conditioning outdoor unit 2000 shown in Embodiment Four. In some embodiments, the air conditioning device further includes an air conditioning indoor unit 3000, and the air conditioning indoor unit 3000 and the air conditioning outdoor unit 2000 are connected through a pipeline.

[0122] Since the refrigerant circulation has been introduced in Embodiment Four, the embodiment will not be described here. In addition, for other structures of the air conditioning indoor unit 3000, please refer to the related technology, which will not be described here.

[0123] The above description is only the preferred specific embodiments of the present application, and each embodiment can be combined and replaced with each other, but the protection scope of the present application is not limited thereto. Any changes or replacements within the technical range disclosed in the present application can be easily thought by those skilled in the art, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A four-way valve assembly for use in a heating and cooling system having a compressor and a control device, wherein, The valve body comprises a main valve pipe and a first pipe joint and a second pipe joint arranged on the main valve pipe, the first pipe joint is used for connecting an exhaust pipe, the exhaust pipe is used for connecting an exhaust port of the compressor, the second pipe joint is used for connecting an intake pipe, the intake pipe is used for connecting a return port of the compressor; The plurality of electrical components comprises at least one of a temperature detection component, a pressure switch component and a pressure detection component, each of the electrical components is connected to the first pipe joint and / or the second pipe joint; The adapter component comprises a circuit board, the circuit board is electrically connected to each of the electrical components through a plurality of first lines and is electrically connected to the control device through a second line. The adapter component further comprises a mounting seat mounted on the main valve pipe, the mounting seat comprises a bottom wall and a side wall connected to the bottom wall, the bottom wall and the side wall enclose a receiving groove, and the circuit board is mounted in the receiving groove. The side wall is provided with a first wire hole through which the first line passes, and / or the side wall is provided with a second wire hole through which the second line passes.

2. The four-way valve assembly of claim 1, wherein, The adapter component further comprises a cover body, the cover body covers the mounting seat and encloses a cavity with the receiving groove, the cavity is used for mounting the circuit board.

3. The four-way valve assembly of claim 2, wherein, The electrical components comprise a first temperature detection component, the first temperature detection component is mounted on the first pipe joint and is used for detecting the temperature of the first pipe joint; 4. The four-way valve assembly of claim 3, wherein, And / or, the electrical components comprise a second temperature detection component, the second temperature detection component is mounted on the second pipe joint and is used for detecting the temperature of the second pipe joint.

5. The four-way valve assembly of claim 3, wherein, The first temperature detection component comprises a first heat conduction member and a first temperature detection member, the first heat conduction member is mounted on the first pipe joint and is in thermal contact with the first pipe joint, the first heat conduction member is provided with a first receiving cavity, and the first temperature detection member is mounted in the first receiving cavity and is in close contact with the inner wall of the first heat conduction member.

6. The four-way valve assembly of any one of claims 1-5, wherein, One end of the first heat conduction member is provided with a first opening, the first opening is in communication with the first receiving cavity, and the first temperature detection member is inserted into the first receiving cavity through the first opening. The electrical components comprise a first pressure switch component, a side wall of the first pipe joint is provided with a first interface, the first pressure switch component is mounted on the first interface and is in communication with the first pipe joint through the first interface; 7. The four-way valve assembly of claim 6, wherein, And / or, the electrical components comprise a second pressure switch component, a side wall of the second pipe joint is provided with a second interface, the second pressure switch component is mounted on the second interface and is in communication with the second pipe joint through the second interface.

8. The four-way valve assembly of claim 7, wherein, The plurality of electrical components comprises a first pressure detection component, a side wall of the first pipe joint is provided with a third interface, the first pressure detection component is mounted on the third interface and is in communication with the first pipe joint through the third interface; 9. The four-way valve assembly of any one of claims 1-8, wherein, ​ ​ 10. The four-way valve assembly of any one of claims 1-8, wherein, ​ And / or, the plurality of electrical components comprises a second pressure detection component, a side wall of the second pipe joint is provided with a fourth interface, the second pressure detection component is installed on the fourth interface and communicates with the second pipe joint through the fourth interface.

11. The four-way valve assembly of claims 1-8, wherein, The plurality of electrical components comprises a third pressure detection component, the third pressure detection component respectively communicates with the first pipe joint and the second pipe joint, and is used for detecting pressure information in the first pipe joint and the second pipe joint.

12. The four-way valve assembly of claim 11, wherein, The third pressure detection component comprises a pressure sensing element, a first conducting member and a second conducting member, a side wall of the first pipe joint is provided with a fifth interface, a side wall of the second pipe joint is provided with a sixth interface, one end of the first conducting member is connected with the pressure sensing element and communicates, the other end of the first conducting member is installed on the fifth interface and communicates with the first pipe joint through the fifth interface, one end of the second conducting member is connected with the pressure sensing element and communicates, the other end of the second conducting member is installed on the sixth interface and communicates with the second pipe joint through the sixth interface, the pressure sensing element is configured to detect the pressure information in the first pipe joint through the first conducting member and detect the pressure information in the second pipe joint through the second conducting member.

13. The four-way valve assembly of claim 12, wherein, The second conducting member is provided with a bending portion, the bending portion is arranged to be bent towards one side of the main valve pipe, the first pipe joint and the second pipe joint, the bending portion, the main valve pipe, the first pipe joint and the second pipe joint enclose an installation space, and the four-way valve assembly further comprises a pilot valve, the pilot valve is installed on one side of the four-way valve assembly body and partially located in the installation space.

14. The four-way valve assembly of claim 13, wherein, The four-way valve assembly further comprises a mounting member, the mounting member is provided with a connecting interface for the first pipe joint to pass through, the mounting member is sleeved on the first pipe joint through the connecting interface and connected with the main valve pipe, the pilot valve is connected to one side of the mounting member, and the adapter component is installed on the other side of the mounting member.

15. The four-way valve assembly of claim 14, wherein, A surface of the mounting member facing the main valve pipe is a circular arc surface, and the circular arc surface is fitted with an outer wall surface of the main valve pipe.

16. The four-way valve assembly of any one of claims 1-15, wherein, The first pipe joint comprises a main pipe segment and a one-way valve pipe segment in communication, the main pipe segment is located between the main valve pipe and the one-way valve pipe segment, the main pipe segment is connected and communicated with the main valve pipe, and the one-way valve pipe segment is used for connecting an exhaust port of the compressor, the one-way valve pipe segment is internally provided with a valve core, and the valve core is used for controlling one-way conduction of the one-way valve pipe segment from the one-way valve pipe segment to the main pipe segment.

17. The four-way valve assembly of any one of claims 1-15, wherein, The valve body further comprises a third pipe joint arranged on the main valve pipe, the third pipe joint is used for communicating a first refrigerant flow path, the first refrigerant flow path is used for communicating a heat exchanger of the heating and ventilation equipment, and the four-way valve assembly further comprises a filtering component, the filtering component is installed on the third pipe joint and is used for filtering refrigerant flowing through the third pipe joint.

18. The four-way valve assembly of claim 17, wherein, The filtering component is installed on one end of the third pipe joint away from the main valve pipe.

19. The four-way valve assembly of claim 18, wherein, The filter component comprises a filter cartridge and a first filter element, one end of the filter cartridge is installed on the end of the third pipe joint away from the main valve pipe, and the first filter element is installed in the inner cavity of the filter cartridge.

20. The four-way valve assembly of claim 19, wherein, In the direction away from the third pipe joint, the filter cartridge comprises a first variable diameter section and an expanding diameter section in sequence, the first variable diameter section is connected with the third pipe joint, and the inner diameter of the first variable diameter section gradually increases from the end close to the third pipe joint to the end away from the third pipe joint, and the inner diameter of the expanding diameter section is larger than the inner diameter of the third pipe joint.

21. The four-way valve assembly of claim 18, wherein, The filter component comprises a second filter element, and the second filter element is installed in the third pipe joint.

22. A heating and ventilating apparatus outdoor unit, wherein, The four-way valve assembly comprises a shell, a heat exchanger, a compressor and the four-way valve assembly according to any one of claims 1-21, the heat exchanger, the compressor and the four-way valve assembly are arranged in the shell, and the four-way valve assembly is connected with and communicates with the compressor and the heat exchanger respectively.

23. A heating and ventilating apparatus wherein, The heating and ventilation equipment indoor unit and the heating and ventilation equipment outdoor unit are connected through pipelines.

Images