Four-way valve assembly, heating and ventilation equipment outdoor unit and heating and ventilation equipment

Abstract

The utility model discloses a four-way valve assembly, a heating and ventilation equipment outdoor unit and heating and ventilation equipment, and relates to the technical field of heating and ventilation equipment. The four-way valve assembly comprises a valve body, a plurality of electric appliance parts and a switching part, the plurality of electric appliance parts are in telecommunication connection with the switching part through a first line, and then the switching part is in telecommunication connection with the control device through a second line, so that telecommunication connection between the plurality of electric appliance parts and the control device is achieved. Compared with an original mode that a plurality of electric appliance parts are in one-to-one telecommunication connection with the control device through a plurality of circuits, the complexity of the circuits can be reduced, so that the internal space of a machine body of the outdoor unit of the heating and ventilation equipment is saved, and the size and the production cost of the machine body are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of HVAC equipment, in particular to a four-way valve component, an outdoor unit of HVAC equipment and HVAC equipment. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] The four-way valve plays a key control and regulation role in HVAC equipment, ensuring that the system can operate efficiently and stably while meeting the requirements of different usage environments and needs.

[0004] The four-way valve and the pipes connected to it need to detect parameters such as temperature and pressure through electrical devices such as temperature detection devices and pressure detection devices. The above electrical devices need to be connected to the control device of the HVAC equipment through their own connecting lines. Not only are there many connecting lines and the wiring is complicated, the body structure of the HVAC equipment outdoor unit is complicated, the size is bloated, and the production cost is high. Utility Model Content

[0005] The purpose of the utility model is to at least solve the problems of the existing HVAC equipment outdoor unit having a complex structure, bulky volume and high production cost. This purpose is achieved through the following technical solutions:

[0006] In the first aspect, the utility model proposes a four-way valve assembly, which is applied to HVAC equipment with a compressor and a control device, including a valve body, multiple electrical components and a switching component. The valve body includes 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 to connect to the exhaust pipe, and the exhaust pipe is used to connect to the exhaust port of the compressor. The second pipe joint is used to connect to the intake pipe, and the intake pipe is used to connect to the return air port of the compressor; the multiple electrical components include at least one of a temperature detection component, a pressure switch component and a pressure detection component, and each of the electrical components is connected to the first pipe joint and / or the second pipe joint; the switching component is installed on the main valve pipe, and the switching component is electrically connected to each of the electrical components through a first line, and is used to electrically connect to the control device through a second line.

[0007] According to the four-way valve assembly provided by the utility model, multiple electrical components are electrically connected to the adapter component through a first circuit, and then the adapter component is electrically connected to the control device through a second circuit, thereby realizing the connection between multiple electrical components and the control device. Compared with the original method of connecting multiple electrical components to the control device one by one through multiple circuits, the complexity of the circuit can be reduced, thereby saving the internal space of the outdoor unit of the HVAC equipment, reducing the body volume and production cost.

[0008] In addition, the four-way valve assembly provided by the utility model may also have the following additional technical features:

[0009] In some embodiments of the present invention, the adapter component includes a circuit board, the circuit board is electrically connected to each of the electrical components through the first line, and is used to electrically connect to the control device through a second line.

[0010] In some embodiments of the present invention, the adapter component also includes a mounting base installed on the main valve tube, the mounting base includes a bottom wall and a side wall connected to the bottom wall, the bottom wall and the side wall form a receiving groove, and the circuit board is installed in the receiving groove.

[0011] In some embodiments of the present invention, the side wall is provided with a first wire passing hole for the first wire to pass through, and / or the side wall is provided with a second wire passing hole for the second wire to pass through.

[0012] In some embodiments of the present invention, the adapter component further includes a cover body, which is mounted on the mounting seat and forms a cavity for mounting the circuit board together with the accommodating groove.

[0013] In some embodiments of the present invention, the electrical component includes a first temperature detection component, which is installed on the first pipe joint and is used to detect the temperature of the first pipe joint; and / or, the electrical component includes a second temperature detection component, which is installed on the second pipe joint and is used to detect the temperature of the second pipe joint.

[0014] In some embodiments of the present invention, the first temperature detection component includes a first heat conductive member and a first temperature detection member, the first heat conductive member is installed on the first pipe joint and is thermally connected to the first pipe joint, the first heat conductive member is provided with a first accommodating cavity, the first temperature detection member is installed in the first accommodating cavity and fits with the inner wall of the first heat conductive member.

[0015] In some embodiments of the present invention, a first opening is provided at one end of the first heat conducting member, the first opening is communicated with the first accommodating cavity, and the first temperature detecting member is inserted into the first accommodating cavity through the first opening.

[0016] In some embodiments of the present utility model, the electrical component includes a first pressure switch component. A first interface is provided on the side wall of the first pipe joint. The first pressure switch component is installed on the first interface and is in communication with the first pipe joint through the first interface; and / or, the electrical component includes a second pressure switch component. A second interface is provided on the side wall of the second pipe joint. The second pressure switch component is installed on the second interface and is in communication with the second pipe joint through the second interface.

[0017] In some embodiments of the present utility model, the multiple electrical components include a first pressure detection component. A third interface is provided on the side wall of the first pipe joint. The first pressure detection component is installed on the third interface and is in communication with the first pipe joint through the third interface; and / or, the multiple electrical components include a second pressure detection component. A fourth interface is provided on the side wall of the second pipe joint. The second pressure detection component is installed on the fourth interface and is in communication with the second pipe joint through the fourth interface.

[0018] In some embodiments of the present utility model, the multiple electrical components include a third pressure detection component. The third pressure detection component is respectively in communication with the first pipe joint and the second pipe joint, and is configured to detect the pressure information in the first pipe joint and the second pipe joint.

[0019] In some embodiments of the present utility model, the third pressure detection component includes a pressure sensing element, a first conducting member, and a second conducting member. A fifth interface is provided on the side wall of the first pipe joint. A sixth interface is provided on the side wall of the second pipe joint. One end of the first conducting member is connected to and in communication with the pressure sensing element. The other end of the first conducting member is installed on the fifth interface and is in communication with the first pipe joint through the fifth interface. One end of the second conducting member is connected to and in communication with the pressure sensing element. The other end of the second conducting member is installed on the sixth interface and is 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.

[0020] In some embodiments of the present utility model, the second conducting member is provided with a bent portion. The bent portion is bent towards the side of the main valve pipe, the first pipe joint, and the second pipe joint. The bent portion, the main valve pipe, the first pipe joint, and the second pipe joint enclose an installation space. The four-way valve assembly further includes 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.

[0021] In some embodiments of the utility model, the four-way valve assembly also includes 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 is connected to 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.

[0022] In some embodiments of the present invention, the surface of the mounting member facing the main valve tube is an arc surface, and the arc surface fits with the outer wall surface of the main valve tube.

[0023] In some embodiments of the present invention, the first pipe joint includes a connected main pipe section and a one-way valve pipe section, 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 communicated with the main valve pipe, the one-way valve pipe section is used to connect to the exhaust port of the compressor, a valve core is provided inside the one-way valve pipe section, and the valve core is used to control the one-way valve pipe section to be unidirectional from the one-way valve pipe section to the main pipe section.

[0024] In some embodiments of the present invention, the valve body also includes a third pipe joint arranged on the main valve pipe, and the third pipe joint is used to connect the first refrigerant flow path, and the first refrigerant flow path is used to connect the heat exchanger of the HVAC equipment. The four-way valve assembly also includes a filter component, and the filter component is installed on the third pipe joint and is used to filter the refrigerant flowing through the third pipe joint.

[0025] In some embodiments of the present invention, the filter device is installed at an end of the third pipe joint away from the main valve pipe.

[0026] In some embodiments of the present invention, the filter device includes a filter cartridge and a first filter element, one end of the filter cartridge is installed on an 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.

[0027] In some embodiments of the utility model, along the direction away from the third pipe joint, the filter cartridge includes a first diameter reducing section and a diameter expanding section which are connected in sequence, the first diameter reducing section is connected to the third pipe joint, and along the first diameter reducing section from one end close to the third pipe joint to the end away from the third pipe joint, the inner diameter of the first diameter reducing section gradually increases, and the inner diameter of the diameter expanding section is larger than the inner diameter of the third pipe joint.

[0028] In some embodiments of the present invention, the filter device includes a second filter element, and the second filter element is installed in the third pipe joint.

[0029] Second aspect, the present utility model provides an outdoor unit of a heating, ventilation and air conditioning (HVAC) device, which includes a housing, a heat exchanger, a compressor, and a four-way valve assembly as described in any one of the above technical solutions; the four-way valve assembly is respectively connected to and communicated with the compressor and the heat exchanger.

[0030] Third aspect, the present utility model provides an HVAC device, which includes an indoor unit of an HVAC device and an outdoor unit of an HVAC device as described in any one of the above technical solutions, and the indoor unit and the outdoor unit of the HVAC device are connected through pipelines. Description of the Drawings

[0031] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered as limiting the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components.

[0032] In the drawings:

[0033] Figure 1 Schematically shows a structural diagram of a four-way valve assembly provided according to Embodiment 1 of the present utility model;

[0034] Figure 2 Schematically shows a structural diagram of a filtering component provided according to Embodiment 1 of the present utility model;

[0035] Figure 3 is Figure 2 an enlarged view of part a;

[0036] Figure 4 Schematically shows a structural diagram of another filtering component provided according to Embodiment 1 of the present utility model;

[0037] Figure 5 is Figure 4 an enlarged view of part b;

[0038] Figure 6 Schematically shows a structural diagram of a first temperature detection component provided according to Embodiment 1 of the present utility model;

[0039] Figure 7 Schematically shows a structural diagram of a four-way valve assembly provided according to Embodiment 2 of the present utility model from a first perspective;

[0040] Figure 8 Schematically shows a structural diagram of a four-way valve assembly provided according to Embodiment 2 of the present utility model from a second perspective;

[0041] Figure 9Schematically shows a schematic structural diagram of an adapter component provided according to Embodiment 2 of the present utility model;

[0042] Figure 10 Schematically shows a partial structural diagram of a four-way valve assembly provided according to Embodiment 2 of the present utility model;

[0043] Figure 11 Schematically shows a schematic structural diagram of a filter component provided according to Embodiment 2 of the present utility model;

[0044] Figure 12 Schematically shows a partial structural diagram of a four-way valve assembly provided according to Embodiment 3 of the present utility model;

[0045] Figure 13 Schematically shows a partial structural diagram of another four-way valve assembly provided according to Embodiment 3 of the present utility model;

[0046] Figure 14 Schematically shows a refrigerant flow path schematic diagram of a heating, ventilation and air conditioning (HVAC) device provided according to Embodiment 5 of the present utility model.

[0047] The reference numerals are as follows:

[0048] 1000, four-way valve assembly;

[0049] 10, valve body; 11, main valve pipe; 12, first pipe joint; 121, main pipe section; 122, check valve pipe section; 13, second pipe joint; 14, third pipe joint; 15, fourth pipe joint; 16, pilot valve;

[0050] 20, filter component; 21, filter cartridge; 211, first reduced-diameter section; 212, enlarged-diameter section; 213, second reduced-diameter section; 22, first filter element; 23, second filter element;

[0051] 30, first pressure switch component; 40, second pressure switch component;

[0052] 50, first temperature detection component; 51, first heat conducting member; 511, first opening; 52, first temperature detection element;

[0053] 60, second temperature detection component; 70, first pressure detection component; 80, second pressure detection component;

[0054] 90, third pressure detection component; 91, pressure sensing mechanism; 92, first conducting member; 93, second conducting member; 931, bent portion;

[0055] 100, adapter component; 101, circuit board; 102, mounting base; 1021, first wire passing hole; 1022, second wire passing hole; 103, cover body;

[0056] 110, First circuit; 120, Second circuit;

[0057] 130, Mounting member; 131, Connecting hole; 132, Protruding portion;

[0058] 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, Outdoor unit of HVAC equipment; 3000, Indoor unit of HVAC equipment. Detailed implementation manners

[0059] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0060] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "include", "comprise", "contain", and "have" are inclusive and thus specify the presence of the 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 combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0061] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms used herein do not imply an order or sequence. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0062] For ease of description, spatial relative relationship terms may be used in the text to describe the relationship of one element or feature shown in the figure relative to another element or feature. These relative relationship terms are, for example, "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relationship terms are intended to include different orientations of the device during use or operation other than the orientations depicted in the figure. For example, if the device in the figure is flipped, an element described as "below" or "beneath" other elements or features will then be oriented as "above" or "over" other elements or features. Thus, the example term "below" can include both upward and downward orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0063] Embodiment 1

[0064] Combined with the attached Figure 1 As shown, this embodiment provides a four-way valve assembly 1000, including functional devices such as 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.

[0065] Among them, the valve body 10 of this embodiment 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 both ends closed and a chamber inside. A switching mechanism (not shown in the figure) is provided in the chamber. The pilot valve 16 is installed outside the valve body 10. The pilot valve 16 is connected to the chamber of the valve body 10 through capillary tubes at both ends, and the pilot valve 16 can drive the switching mechanism to act for commutation.

[0066] The first pipe joint 12, the second pipe joint 13, the third pipe joint 14, and the fourth pipe joint 15 are all joint pipe segments extending outward from the side wall of the main valve pipe 11. The first pipe joint 12 is used to connect the exhaust pipe 200 of the heating and ventilation equipment. The exhaust pipe 200 can be understood as the D pipe used to connect the exhaust port of the compressor 900. An air inlet is provided at one end of the first pipe joint 12 facing away from the valve body 10. 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 chamber of the four-way valve assembly 1000 through the exhaust pipe 200 and the first pipe joint 12 in sequence.

[0067] The second pipe joint 13 is used to connect the air intake pipe 300 of the HVAC equipment. The air intake pipe 300 can be understood as an S-tube used to connect the return air port of the compressor 900. The second pipe joint 13 and the first pipe joint 12 can be respectively located on both 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 through the second pipe joint 13 and the air intake pipe 300 in turn.

[0068] The third pipe joint 14 is used to connect the first refrigerant flow path 400, which can be understood as an E-tube for connecting the first heat exchanger. The fourth pipe joint 15 is used to connect the second refrigerant flow path 500, which can be understood as a C-tube for connecting the second heat exchanger, so that the refrigerant can flow between the first heat exchanger and the second heat exchanger of the HVAC equipment.

[0069] It should be noted that, since the basic working principle of the four-way valve assembly 1000 is well known to those skilled in the art, this embodiment does not provide any detailed description thereof, and those skilled in the art may refer to relevant technologies for understanding.

[0070] In the related art, multiple electrical components are generally directly connected to the control device of the HVAC equipment through lines. The control device can be the central control board of the outdoor unit of the HVAC equipment (including at least one of PLC, MCU and processor). Each electrical component has at least one line. Multiple lines of multiple electrical components require complex line layout to be connected to the control device, which occupies the internal space of the outdoor unit of the HVAC equipment and increases the complexity of the internal structure of the body.

[0071] In view of this, the present 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 the 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 the second line 120.

[0072] 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 achieved through a shorter first line 110, and then the adapter component 100 only needs at least one second line 120 to achieve the telecommunication connection with the control device, and only the second line 120 needs to be routed in the body, which simplifies the lines and reduces the space occupied by the lines in the body, thereby reducing the body and reducing the production cost.

[0073] The multiple electrical components in this embodiment include at least one of a temperature detection component, a pressure switch component, and a pressure detection component. For example, the multiple electrical components include Figure 1 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

[0074] The transfer component 100 in this embodiment can be structures such as an electric control box or a transfer box. The transfer component 100 can also include Figure 1 a circuit board 101 in

[0075] 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 board of the outdoor unit of the HVAC equipment through the circuit board 101. The circuit board 101 can be understood as a circuit board for transfer.

[0076] The transfer component 100 and the pilot valve 16 in this embodiment are located on opposite sides of the main valve pipe 11. The transfer component 100 can only include a circuit board 101, and the circuit board 101 is directly installed on the main valve pipe 11. It can also be designed that the transfer component 100 further includes Figure 3 and Figure 4 a mounting seat 102 and a cover 103 in

[0077] Combined with the attached Figure 2-5 As shown, different from the related art in which the filter component 20 and the third pipe joint 14 are connected through an intermediate pipeline, in the embodiment of the present application, the filter component 20 is directly installed on the third pipe joint 14. Specifically, the filter component 20 is installed at one 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 between the filter component 20 and the third pipe joint 14 is omitted, so that the body structure of the outdoor unit of the HVAC equipment can be simplified to a certain extent, the overall volume of the body can be reduced, and the production and manufacturing cost can also be reduced to a certain extent.

[0078] The filtering component 20 of this embodiment includes a filtering cylinder 21 and a first filtering element 22. One end of the filtering cylinder 21 is installed at one end of the third pipe joint 14 away from the main valve pipe 11. The installation method can be an integral connection method such as welding or bonding, or the filtering cylinder 21 and the third pipe joint 14 can be designed as an integrally formed structure. The filtering cylinder 21 is used to receive the refrigerant flowing out of the third pipe joint 14 and is used to transport the refrigerant to the heat exchanger of the indoor unit of the HVAC equipment.

[0079] In some embodiments, the filtering cylinder 21 of this embodiment is welded to the third pipe joint 14. The welding method can be, for example, Figure 2 and 3 as shown, inserting and welding the upper end of the filtering cylinder 21 to the lower end of the third pipe joint 14, or it can be, for example, Figure 4 and 5 as shown, butt-welding the upper end of the filtering cylinder 21 to the lower end of the third pipe joint 14.

[0080] The first filtering element 22 of this embodiment is installed in the inner cavity of the filtering cylinder 21. The installation method of the first filtering element 22 can be a fixed connection or a detachable connection. The first filtering element 22 is used to filter the refrigerant flowing through the filtering cylinder 21. The first filtering element 22 can be a structure such as a filter mesh or a filter element.

[0081] Combining with FIGS. Figure 2 and 3 shown again, in some examples, optionally, the radial dimension of the inner wall of the filtering cylinder 21 of this embodiment is larger than the radial dimension of the inner wall of the third pipe joint 14.

[0082] Specifically, the filtering cylinder 21 of this embodiment can be designed to include a first reduced-diameter section 211, an enlarged-diameter section 212, and a second reduced-diameter section 213 that are connected in sequence. One end of the first reduced-diameter section 211 is connected to the third pipe joint 14. Along the direction away from the third pipe joint 14, the inner diameter dimension of the first reduced-diameter section 211 gradually increases, and the minimum inner diameter of the first reduced-diameter section 211 is greater than or equal to the inner diameter of the third pipe joint 14.

[0083] The inner diameter of the enlarged-diameter section 212 is larger than the inner diameter of the third pipe joint 14, and the inner diameter of the enlarged-diameter section 212 is greater than or equal to the maximum inner diameter of the first reduced-diameter section 211. The second reduced-diameter section 213 is connected to one end of the enlarged-diameter section 212 away from the third pipe joint 14, and along the direction away from the third pipe joint 14, the inner diameter of the second reduced-diameter section 213 of this embodiment gradually decreases.

[0084] Since the inner diameter of the filtering cylinder 21 is larger, the filtering area of the first filtering element 22 can be increased, improving the filtering efficiency. Moreover, the flow rate of the refrigerant increases after entering the filtering cylinder 21, further improving the filtering efficiency.

[0085] Combining with FIGS. Figure 1 and FIGS.Figure 6 As shown, different from the way of connecting the temperature detection structure and the first pipe joint 12 through an intermediate pipeline in the related art, in the embodiment of the present application, the first temperature detection component 50 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 this embodiment may further include a second temperature detection component 60, and the second temperature detection component 60 is directly installed on the second pipe joint 13 to detect the temperature of the second pipe joint 13.

[0086] The first temperature detection component 50 of this embodiment includes a first heat conducting member 51 and a first temperature detection member 52. The first heat conducting member 51 may be wholly or partly made of heat conducting materials, and the heat conducting materials may be metal materials such as iron, copper, aluminum or alloys, or heat conducting materials such as carbon fiber, ceramics, etc. The first temperature detection member 52 may be a temperature detection element such as a temperature sensor. Specifically, the material of the first heat conducting member 51 may be designed to be the same as that of the first pipe joint 12, and the two are integrally connected by welding, which can improve the connection stability and the heat conducting performance at the same time.

[0087] The first heat conducting member 51 may be in a shape approximately like a cylinder, a square column, etc. An arc surface is provided on the outer side of the first heat conducting member 51, and the arc surface 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. A first accommodation cavity is provided inside the first heat conducting member 51, and the first temperature detection member 52 is installed in the first accommodation cavity and is in contact with the inner wall of the first heat conducting member 51. When performing temperature detection, the first heat conducting member 51 transfers the temperature of the first pipe joint 12 to the first temperature detection member 52, realizing the detection of the temperature of the first pipe joint 12.

[0088] In order to facilitate the installation of the first temperature detection member 52 and the connection of the first temperature detection member 52 to other control structures through a circuit, a first opening 511 may also be provided at one end (the upper end in the figure) of the first heat conducting member 51 in this embodiment. The first temperature detection member 52 is inserted into the first accommodation cavity through the first opening 511. After the first temperature detection member 52 is installed in the first accommodation cavity, it is necessary to ensure that the first temperature detection member 52 can be in close contact with or pressed against the inner wall surface of the first heat conducting member 51. Therefore, the shape of the first temperature detection member 52 needs to match the shape of the first accommodation cavity.

[0089] The structure of the second temperature detection component 60 of this embodiment may be the same as that of the aforementioned first temperature detection component 50. Therefore, this embodiment will not describe the second temperature detection component 60 in detail, and those skilled in the art can understand the second temperature detection component 60 with reference to the first temperature detection component 50.

[0090] It should be noted that the "direct installation" mentioned in this embodiment means that at least part of one component is directly connected to another component. For example, at least part of the first temperature detection component 50 in this embodiment is directly connected to the first pipe joint 12. Similarly, the direct installation in the following embodiments can be understood in the same way.

[0091] Combined with the attached Figure 1 As shown, in order to further optimize the internal space of the outdoor unit of the HVAC equipment and simplify the structure, in this embodiment, the check valve is directly integrated into the first pipe joint 12. Correspondingly, it is necessary to lengthen the length of the first pipe joint 12. Therefore, in this embodiment, the first pipe joint 12 is designed to include a main pipe section 121 and a check valve pipe section 122 that are connected and communicate with each other. The main pipe section 121 and the check valve pipe section 122 can be directly integrally formed during processing, or connected into one body by welding. The main pipe section 121 is located between the valve body 10 and the check valve pipe section 122, and is connected and communicates with the valve body 10.

[0092] The function of the check valve in this embodiment is to allow the refrigerant to only enter the four-way valve assembly 1000 from the compressor 900, and prevent the refrigerant from flowing back from the four-way valve assembly 1000 to the compressor 900. An air inlet as described above is provided at one end of the check valve pipe section 122 away from the main pipe section 121. The air inlet is used to connect to the exhaust port of the compressor 900. A valve core (not shown in the figure) is provided inside the check valve pipe section 122. The valve core is used to open and close the connection between the air inlet and the main pipe section 121.

[0093] Furthermore, a valve seat and a retaining ring (not shown in the figure) can be provided in the check valve pipe section 122. The valve core can move axially along the check valve pipe section 122 under the flow of the refrigerant. When the valve core moves to cooperate with the valve seat, the connection between the air inlet and the main pipe section 121 is cut off. When the valve core moves to cooperate with the retaining ring, the valve core has a flow channel, and the flow channel conducts the air inlet and the main pipe section 121.

[0094] The above structural form of directly integrating the check valve into the first pipe joint 12 omits the intermediate connecting pipeline, thereby being able to simplify the body structure, reduce the overall volume of the body, and also reduce the production and manufacturing cost to a certain extent.

[0095] Combined with the attached Figure 1 As shown, different from connecting the pressure switch through an intermediate structure (such as a bracket, pipeline, etc.) in the related art, in this embodiment, a first interface is provided on the first pipe joint 12, and a second interface is provided on the second pipe joint 13. The first pressure switch component 30 is installed on the first interface and communicates with the first pipe joint 12 through the first interface. The second pressure switch component 40 is installed on the second interface and communicates with the second pipe joint 13 through the second interface.

[0096] It should be noted that since interfaces such as the first interface and the second interface are blocked by the first pressure switch component 30, the second pressure switch component 40, etc., the interface structures such as the first interface and the second interface are not labeled in the drawings in this embodiment.

[0097] 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 means that the pipeline pressure range can be between dozens of pascals (Pa) to several hundred pascals (Pa) and 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 may be between 3000 kPa (3 MPa) and 4500 kPa (4.5 MPa). The low-pressure information can be that the pipeline pressure is between dozens of kilopascals and several hundred kilopascals, such as between 300 kPa (0.3 MPa) and 700 kPa (0.7 MPa). The "low pressure" and "high pressure" in the rest of the embodiments are understood in the same way as in this embodiment.

[0098] 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.

[0099] 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 the low-pressure state, such as liquid operation or poor refrigeration effect.

[0100] Combined with the attached Figure 1 As shown, different from the related art in which a pressure sensor and a four-way valve assembly 1000 are connected through an intermediate structure (such as a bracket, a pipeline, etc.), the third pressure detection component 90 in this embodiment is directly integrated on the four-way valve assembly 1000. A part of the third pressure detection component 90 is installed on the first pipe joint 12, and another part is installed on the second pipe joint 13. The third pressure detection component 90 is configured to be able to detect the pressure information of the first pipe joint 12 and the second pipe joint 13 simultaneously.

[0101] This 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 may include one or two pressure sensing elements. When the number of pressure sensing elements is one, the circuit of one pressure sensing element can separately process and distinguish the pressure signals from the first pipe joint 12 and the second pipe joint 13. The pressure sensing element is located inside the housing, so it is not shown in the figure. Of course, it can also be that two pressure sensing elements are integrated in one sensor housing, one of which is directly connected to the first conducting member 92, and the other is directly connected to the second conducting member 93. The two pressure sensing elements separately process the pressure signals from the first pipe joint 12 and the second pipe joint 13 (this implementation is not shown in the figure).

[0102] In this embodiment, the pressure sensing element may be located inside the sensor housing. One end of the first conducting member 92 is connected and communicated with the housing of the pressure sensing element, and the other end of the first conducting member 92 is connected and communicated with the fifth interface of the first pipe joint 12. Similarly, one end of the second conducting member 93 in this embodiment is connected and communicated with the pressure sensing element, and the other end of the second conducting member 93 is connected and communicated with the sixth interface of the second pipe joint 13. The pressure sensing element is configured to detect the pressure information in the first pipe joint 12 through the first conducting member 92 and detect the pressure information in the second pipe joint 13 through the second conducting member 93.

[0103] The first conducting member 92 and the second conducting member 93 may be rigid or flexible pipe structures. As part of the third pressure detection component 90, they are used to assist the pressure sensing element in collecting the pressure information of the first pipe joint 12 and the second pipe joint 13.

[0104] This structure integrates the third pressure detection component 90 and the second pressure detection component 80 in the first embodiment so that only the third pressure detection component 90 is used to detect the pressures of the first pipe joint 12 and the second pipe joint 13, which can further simplify the structure, improve the integration degree of the four-way valve assembly 1000, and reduce the volume of the machine body.

[0105] In some examples, optionally, the first conducting member 92 may be integrally connected to the first pipe joint 12, and the second conducting member 93 may also be integrally connected to the second pipe joint 13. The integrally connected methods include welding, bonding, hot melt connection, etc., and may also include the method of integrally forming during processing.

[0106] In order to further optimize the space and avoid interference with structures such as the structure of the pilot valve 16, in some examples, optionally, the second conduction member 93 of this embodiment is provided with a bending portion 931. The bending portion 931 faces the valve body 10, the first pipe joint 12, and the second pipe joint 13, and forms intervals with a part of the valve body 10, a part of the first pipe joint 12, and a part of the second pipe joint 13 respectively, so that the bending portion 931, the valve body 10, a part of the valve body 10, a part of the first pipe joint 12, and a part of the second pipe joint 13 enclose an installation space.

[0107] A part of the pilot valve 16 of this embodiment is located in this installation space, so that the possibility of interference between the second conduction member 93 and the pilot valve 16 is reduced. Moreover, when the second conduction member 93 is a rigid structure, the second conduction member 93 can also be used to support and protect the outside of the pilot valve 16.

[0108] Embodiment Two

[0109] Combined with the attached Figure 7-10 As shown, the difference between this embodiment and the first example is that the filtering component 20 is directly installed in the third pipe joint 14. Specifically, the filtering component 20 of this embodiment includes a second filtering member 23. The second filtering member 23 can be structures such as a filter net or a filter element. The second filtering member 23 is directly installed in the third pipe joint 14. Compared with the filtering component 20 in the first embodiment, the filter cartridge 21 can be omitted.

[0110] Combined with the attached Figure 11 As shown, the adapter component 100 of this embodiment may further include a mounting seat 102 and a cover 103. The mounting seat 102 includes a bottom wall and side walls connected to the periphery of the bottom wall. The cover 103 is covered on the mounting seat 102. The mounting method can be a detachable method such as snap connection or bolt connection. The mounting seat 102 and the cover 103 form a box structure. The accommodating groove of the cover 103 and the mounting seat 102 encloses a cavity for mounting the circuit board 101. In addition, a wiring hole needs to be opened on the cover 103 or the mounting seat 102 to facilitate the connection between the above functional devices and the circuit board 101.

[0111] Specifically, a first wire passing hole 1021 and a second wire passing hole 1022 can be opened on the side wall of the mounting seat 102 of this embodiment. The first wire passing hole 1021 is for one end of the first circuit 110 to pass through and be inserted into the circuit board 101, and the second wire passing hole 1022 is for one end of the second circuit 120 to pass through and be inserted into the circuit board 101.

[0112] Embodiment Three

[0113] Combined with the attached Figure 12 and the attached Figure 13As shown (the adapter component 100 is not shown in the figure), the difference between this embodiment and embodiment one and embodiment two lies in the different pressure detection structures. 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 is connected to the first pipe joint 12. The second pressure detection component 80 is installed on the second pipe joint 13 and is connected to the second pipe joint 13.

[0114] The first pressure detection component 70 is used to detect the pressure information in the first pipe joint 12, and the pressure information can be the high pressure information in the first pipe joint 12. The flow rate of the fluid can be calculated through the high pressure information, and the high pressure information can be fed back to the control system for automatic or manual adjustment of the opening of the four-way valve assembly 1000 to achieve the flow regulation required by the system. In addition, the first pressure detection component 70 can monitor the fluid pressure changes in the system in real time, which is helpful for timely diagnosis of pipeline blockage, valve failure or system leakage. The above-mentioned high pressure information refers to the pressure range that can be between tens to hundreds of Pascals (Pa) and hundreds of 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 may be between 3000kPa (3MPa) and 4500kPa (4.5MPa).

[0115] In this embodiment, the first pressure detecting component 70 is directly installed on the third interface of the first pipe joint 12, and is connected to the first pipe joint 12 through the third interface, omitting the intermediate structure in which the first pressure detecting component 70 is respectively connected to the four-way valve assembly 1000, thereby further simplifying the body structure, reducing the overall volume of the body, and also reducing a certain amount of production and manufacturing costs.

[0116] The structure of the second pressure detection component 80 is the same as or similar to that of the aforementioned first pressure detection component 70. For example, both can be pressure sensors. The detection range of the second pressure detection component 80 and the first pressure detection component 70 can be different. 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.

[0117] Similar 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 is connected to the second pipe joint 13 through the fourth interface, thereby further saving space in the machine body and simplifying the structure.

[0118] The first pressure detection component 70 and the second pressure detection component 80 of this embodiment may both include a housing and an internal pressure sensing element. The housing and the first pipe joint 12 and the second pipe joint 13 may be made of the same or similar materials.Figure 6 and Figure 7 The structures of the first pressure detection component 70 and the second pressure detection component 80 are similar, except that Figure 6 The shell of the first pressure detecting component 70 and the second pressure detecting component 80 also includes a pipe section for connecting and communicating with the first pipe joint 12 or the second pipe joint 13. The pipe section is different from the existing intermediate pipeline for connecting the sensor and the four-way valve assembly 1000. The pipe section of the shell described in this embodiment is shorter and is part of the shell or the sensor.

[0119] In some examples, optionally, the first pressure detecting component 70 can be integrally connected to the first pipe joint 12, and the second pressure detecting component 80 can also be integrally connected to the second pipe joint 13. The integrated connection method described in this embodiment includes welding, bonding, hot melt connection, etc., and can also include an integrated molding method during processing.

[0120] In addition, the four-way valve assembly 1000 in this embodiment and the embodiment may also include a mounting member 130, the mounting member 130 is provided with a connecting hole 131 for the first pipe joint 12 to pass through, 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.

[0121] The mounting member 130 of this embodiment may be a plate-like or sheet-like structure. In order to be able to be more stably connected to the main valve tube 11, the surface of the mounting member 130 of this embodiment facing the main valve tube 11 may be designed as an arc surface, and the arc surface fits the outer wall surface of the main valve tube 11. Furthermore, the mounting member 130 may be connected to the outer wall of the main valve tube 11 by bolts, screws and other components, thereby further improving the installation stability of the mounting member 130 and the pilot valve 16. The mounting member 130 is provided with a raised portion 132 bent relative to the mounting member 130 at one end close to the pilot valve 16. The pilot valve 16 may be mounted on the raised portion 132 by bolts and other components, and fits the outer wall of the main valve tube 11.

[0122] Embodiment 4

[0123] Combined with Figure 14 As shown, this embodiment provides an outdoor unit 2000 of a HVAC equipment, including 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 respectively connected and communicated with the compressor 900 and the heat exchanger.

[0124] Specifically, the first pipe joint 12 of the four-way valve assembly 1000 may be connected to the exhaust port of the compressor 900 through the exhaust pipe 200, the second pipe joint 13 may be connected to the suction port of the compressor 900 through the suction pipe 300, the third pipe joint 14 may be connected to the first heat exchanger 600 through the first refrigerant flow path 400, and the fourth pipe joint 15 may be connected to the second heat exchanger 700 of the indoor unit 3000 of the heating and ventilation equipment through the second refrigerant flow path 500.

[0125] The refrigerant in the compressor 900 sequentially enters the main valve pipe 11 through the suction pipe 300 and the second pipe joint 13, then flows into the first refrigerant flow path 400 through the third pipe joint 14, and after being processed by structures such as the expansion valve 410 and the liquid-side stop valve 420 on the first refrigerant flow path 400, it flows into the first heat exchanger 600 and the second heat exchanger 700. The refrigerant in the second heat exchanger 700 enters the fourth pipe joint 15 after being processed by the gas-side stop valve 510 on the second refrigerant flow path 500, 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-liquid separation, and then returns to the compressor again to complete the refrigerant cycle.

[0126] Regarding the structures of other parts of the outdoor unit 2000 of the heating and ventilation equipment except the four-way valve assembly 1000, please refer to the related technologies, and details will not be elaborated in this application.

[0127] Embodiment 5

[0128] Combined with the attached Figure 14 As shown in the figure, this embodiment provides a heating and ventilation equipment, including the outdoor unit 2000 of the heating and ventilation equipment shown in Embodiment 4. In some embodiments, the heating and ventilation equipment further includes an indoor unit 3000 of the heating and ventilation equipment, and the indoor unit 3000 of the heating and ventilation equipment and the outdoor unit 2000 of the heating and ventilation equipment are connected through pipelines.

[0129] Since the refrigerant cycle has been introduced in Embodiment 4, details will not be elaborated in this embodiment. In addition, regarding other structures of the indoor unit 3000 of the heating and ventilation equipment, reference can be made to the related technologies, and this embodiment will not describe them in too much detail either.

[0130] The above are only the preferred specific embodiments of the present invention. The embodiments can be combined and replaced with each other, but the protection scope of the present invention is not limited thereto. Any changes or replacements that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A four-way valve assembly, applied to a HVAC device having a compressor and a control device, characterized in that: include: The valve body comprises a main valve pipe and a first pipe joint and a second pipe joint provided on the main valve pipe, wherein the first pipe joint is used to connect to an exhaust pipe, the exhaust pipe is used to connect to an exhaust port of the compressor, and the second pipe joint is used to connect to an intake pipe, the intake pipe is used to connect to an air return port of the compressor; A plurality of electrical components, wherein the plurality of electrical components include at least one of a temperature detection component, a pressure switch component and a pressure detection component, and each of the electrical components is connected to the first pipe joint and / or the second pipe joint; as well as A transfer component is installed on the main valve pipe, the transfer component is electrically connected to each of the electrical components, and the transfer component is electrically connected to the control device.

2. The four-way valve assembly according to claim 1, characterized in that: The switching component includes a circuit board, which is electrically connected to each of the electrical components through a plurality of first circuits and electrically connected to the control device through a second circuit.

3. The four-way valve assembly according to claim 2, characterized in that: The adapter component also includes a mounting seat installed on the main valve tube, the mounting seat includes a bottom wall and a side wall connected to the bottom wall, the bottom wall and the side wall form a receiving groove, and the circuit board is installed in the receiving groove.

4. The four-way valve assembly according to claim 3, characterized in that: The side wall is provided with a first wire-passing hole for the first wire to pass through, and / or the side wall is provided with a second wire-passing hole for the second wire to pass through.

5. The four-way valve assembly according to claim 3, characterized in that: The adapter component also includes a cover body, which is mounted on the mounting seat and forms a cavity for mounting the circuit board together with the accommodating groove.

6. The four-way valve assembly according to claim 1, characterized in that: The electrical component includes a first temperature detection component, which is installed on the first pipe joint and is used to detect the temperature of the first pipe joint; And / or, the electrical component includes a second temperature detection component, which is installed on the second pipe joint and is used to detect the temperature of the second pipe joint.

7. The four-way valve assembly according to claim 6, characterized in that: The first temperature detection component includes a first heat conductive member and a first temperature detection member. The first heat conductive member is installed on the first pipe joint and is thermally connected to the first pipe joint. The first heat conductive member is provided with a first accommodating cavity. The first temperature detection member is installed in the first accommodating cavity and fits with the inner wall of the first heat conductive member.

8. The four-way valve assembly according to claim 7, characterized in that: A first opening is provided at one end of the first heat conducting member, the first opening is communicated with the first accommodating cavity, and the first temperature detecting member is inserted into the first accommodating cavity through the first opening.

9. The four-way valve assembly according to claim 1, characterized in that: The electrical component comprises 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 installed on the first interface and is connected with the first pipe joint through the first interface; And / or, the electrical component includes a second pressure switch component, the side wall of the second pipe joint is provided with a second interface, the second pressure switch component is installed on the second interface and is connected to the second pipe joint through the second interface.

10. The four-way valve assembly according to claim 1, characterized in that: The plurality of electrical components include 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 installed on the third interface and is connected with the first pipe joint through the third interface; And / or, the multiple electrical components include a second pressure detection component, the 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 is connected to the second pipe joint through the fourth interface.

11. The four-way valve assembly according to claim 1, characterized in that: The multiple electrical components include a third pressure detection component, which is respectively connected to the first pipe joint and the second pipe joint and is used to detect pressure information in the first pipe joint and the second pipe joint.

12. The four-way valve assembly according to claim 11, characterized in that: The third pressure detection component includes a pressure sensing element, a first conductive piece and a second conductive piece. The side wall of the first pipe joint is provided with a fifth interface, and the side wall of the second pipe joint is provided with a sixth interface. One end of the first conductive piece is connected and communicated with the pressure sensing element, and the other end of the first conductive piece is installed on the fifth interface and communicated with the first pipe joint through the fifth interface. One end of the second conductive piece is connected and communicated with the pressure sensing element, and the other end of the second conductive piece is installed on the sixth interface and communicated with the second pipe joint through the sixth interface. The pressure sensing element is configured to detect pressure information in the first pipe joint through the first conductive piece, and detect pressure information in the second pipe joint through the second conductive piece.

13. The four-way valve assembly according to claim 12, characterized in that: The second conducting member is provided with a bending portion, which is bent on one side facing 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 form an installation space. The four-way valve assembly also includes a pilot valve, which is installed on one side of the four-way valve assembly body and is partially located in the installation space.

14. The four-way valve assembly according to claim 13, characterized in that: The four-way valve assembly also includes a mounting member, which 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 is connected to 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 according to claim 14, characterized in that: The surface of the mounting member facing the main valve tube is an arc surface, and the arc surface fits with the outer wall surface of the main valve tube.

16. The four-way valve assembly according to any one of claims 1 to 15, characterized in that: The first pipe joint includes a connected main pipe section and a one-way valve pipe section, 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 communicated with the main valve pipe, the one-way valve pipe section is used to connect to the exhaust port of the compressor, a valve core is provided inside the one-way valve pipe section, and the valve core is used to control the one-way valve pipe section to be unidirectional from the one-way valve pipe section to the main pipe section.

17. The four-way valve assembly according to any one of claims 1 to 15, characterized in that: The valve body also includes a third pipe joint arranged on the main valve pipe, and the third pipe joint is used to connect the first refrigerant flow path, and the first refrigerant flow path is used to connect the heat exchanger of the HVAC equipment. The four-way valve assembly also includes a filter component, and the filter component is installed on the third pipe joint and is used to filter the refrigerant flowing through the third pipe joint.

18. The four-way valve assembly according to claim 17, characterized in that: The filter component is installed at one end of the third pipe joint away from the main valve pipe.

19. The four-way valve assembly according to claim 18, characterized in that: The filter component comprises a filter cartridge and a first filter element. One end of the filter cartridge is mounted on an 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.

20. The four-way valve assembly according to claim 19, characterized in that: Along the direction away from the third pipe joint, the filter cartridge includes a first diameter-reducing section and a diameter-expanding section which are connected in sequence, the first diameter-reducing section is connected to the third pipe joint, and along the first diameter-reducing section from one end close to the third pipe joint to the end away from the third pipe joint, the inner diameter of the first diameter-reducing section gradually increases, and the inner diameter of the diameter-expanding section is larger than the inner diameter of the third pipe joint.

21. The four-way valve assembly according to claim 18, characterized in that The filter component includes a second filter element, and the second filter element is installed in the third pipe joint.

22. An outdoor unit of a heating and ventilation equipment, characterized in that: It comprises a shell, a heat exchanger, a compressor and a four-way valve assembly as described in any one of claims 1 to 21, wherein the heat exchanger, the compressor and the four-way valve assembly are all arranged in the shell, and the four-way valve assembly is connected and communicated with the compressor and the heat exchanger respectively.

23. A HVAC equipment, characterized in that: It comprises a HVAC equipment indoor unit and a HVAC equipment outdoor unit as claimed in claim 22, wherein the HVAC equipment indoor unit and the HVAC equipment outdoor unit are connected via a pipeline.

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