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 four-way valve body and a first pressure detection device, the four-way valve body comprises a main valve pipe and a first pipe joint connected to the main valve pipe, and a one-way valve is arranged at the end, away from the main valve pipe, of the first pipe joint; the first pressure detection device is directly installed on the first pipe joint and communicated with the first pipe joint, and the first pressure detection device is used for detecting pressure information in the first pipe joint. The first pressure detection device is directly installed on the first pipe connector, a middle pipeline connecting the first pressure detection device and the first pipe connector is omitted, meanwhile, the one-way valve is integrated on the first pipe connector, a middle pipeline connecting the one-way valve and the first pipe connector is omitted, and therefore the machine body structure can be simplified to a certain degree, and the cost is reduced. The overall size of the machine body is reduced, and certain production and manufacturing cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heating, ventilation and air conditioning equipment, in particular to a four-way valve assembly, an outdoor unit of heating, ventilation and air conditioning equipment and heating, ventilation and air conditioning equipment. Background Technique

[0002] The information provided in this part is only background information related to the present disclosure, and it does not necessarily represent the prior art.

[0003] The four-way valve plays a key control and regulation role in heating, ventilation and air conditioning 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 needs to be connected to functional components such as a pressure sensor, a pressure switch and a filter to ensure the stable operation of heating, ventilation and air conditioning equipment. However, functional components such as the pressure sensor and the check valve are independently distributed in the body of the outdoor unit of heating, ventilation and air conditioning equipment and are connected to the four-way valve through complex pipelines, making the body structure complex, the volume bloated, and the production cost high. Summary of the Utility Model

[0005] The purpose of the utility model is to at least solve the problems of complex body structure, bloated volume and high production cost of the existing outdoor unit of heating, ventilation and air conditioning equipment. This purpose is achieved through the following technical solutions:

[0006] In a first aspect, the utility model provides a four-way valve assembly, which is applied to heating, ventilation and air conditioning equipment with a compressor, and includes a four-way valve body and a first pressure detection device. The four-way valve body includes a main valve pipe and a first pipe joint connected to the main valve pipe. A check valve is provided at one end of the first pipe joint facing away from the main valve pipe. The check valve is used to connect the exhaust pipe, and the exhaust pipe is used to connect the exhaust port of the compressor. The check valve is configured to switch between an open state and a closed state. When the check valve is in the open state, the check valve conducts the first pipe joint and the exhaust port. When the check valve is in the closed state, the check valve cuts off the connection between the first pipe joint and the exhaust port. The first pressure detection device is installed on the first pipe joint and is connected to the first pipe joint. The first pressure detection device is used to detect the pressure information in the first pipe joint.

[0007] According to the four-way valve assembly provided by the utility model, the first pressure detection device is directly installed on the first pipe joint, omitting the intermediate pipeline connecting the first pressure detection device and the first pipe joint. At the same time, the check valve is integrated into the first pipe joint, omitting the intermediate pipeline connecting the check valve and the first pipe joint, so as to simplify the body structure to a certain extent, reduce the overall volume of the body, and also reduce a certain production and manufacturing cost.

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

[0009] In some embodiments of the present utility model, the four-way valve assembly further includes a second pipe joint and a second pressure detection device. 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 second pressure detection device is installed on the second pipe joint and is in communication with the second pipe joint. The second pressure detection device is used to detect the pressure information in the second pipe joint.

[0010] In some embodiments of the present utility model, the first pressure detection device is integrally connected to the first pipe joint; and / or, the second pressure detection device is integrally connected to the second pipe joint.

[0011] In some embodiments of the present utility model, the four-way valve assembly further includes a second pipe joint. 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 first pressure detection device is also connected to and in communication with the second pipe joint. The first pressure detection device is configured to detect the pressure information in the first pipe joint and the pressure information in the second pipe joint.

[0012] In some embodiments of the present utility model, the first pressure detection device includes a pressure detection mechanism, a first conduction member, and a second conduction member. One end of the first conduction member is connected to and in communication with the pressure detection mechanism, and the other end of the first conduction member is connected to and in communication with the first pipe joint. One end of the second conduction member is connected to and in communication with the pressure detection mechanism, and the other end of the second conduction member is connected to and in communication with the second pipe joint. The pressure detection mechanism is configured to detect the pressure information in the first pipe joint through the first conduction member and detect the pressure information in the second pipe joint through the second conduction member.

[0013] In some embodiments of the present utility model, the first conduction member is integrally connected to the first pipe joint; and / or, the second conduction member is integrally connected to the second pipe joint.

[0014] In some embodiments of the present utility model, the second conduction member is provided with a bent portion. The bent portion faces the main valve pipe, the first pipe joint, and the second pipe joint and encloses an installation space with the main valve pipe, the first pipe joint, and the second pipe joint.

[0015] In some embodiments of the present utility model, the four-way valve assembly further includes a pilot valve. The pilot valve is installed on the four-way valve body, and part of the pilot valve is located in the installation space.

[0016] In some embodiments of the present utility model, the four-way valve assembly further includes a filter. The four-way valve body further includes a third pipe joint provided on the main valve pipe. The third pipe joint is used to connect to a first refrigerant flow path, and the first refrigerant flow path is used to connect to a heat exchanger of the heating and ventilation equipment. The filter is connected to the third pipe joint and is used to filter the refrigerant flowing through the third pipe joint.

[0017] In some embodiments of the present utility model, the third pipe joint is provided with an air outlet. The filter includes a filter cylinder and a first filter element located inside the filter cylinder. One end of the filter cylinder is installed in the air outlet and is connected to the third pipe joint through the air outlet.

[0018] In some embodiments of the present utility model, the filter includes a second filter element, and the second filter element is installed inside the third pipe joint.

[0019] In a second aspect, the present utility model provides an outdoor unit of heating and ventilation equipment, which includes a housing, a heat exchanger, a compressor, and a four-way valve assembly according to any one of the above technical solutions. The heat exchanger, the compressor, and the four-way valve assembly are all arranged inside the housing. The main valve pipe of the four-way valve assembly is connected between the compressor and the heat exchanger. The first pipe joint of the four-way valve assembly is connected to the exhaust port of the compressor, and the second pipe joint of the four-way valve assembly is connected to the suction port of the compressor.

[0020] In a third aspect, the present utility model provides a heating and ventilation equipment, which includes an indoor unit of heating and ventilation equipment and an outdoor unit of heating and ventilation equipment as shown in any one of the above technical solutions. The indoor unit of heating and ventilation equipment and the outdoor unit of heating and ventilation equipment are connected through pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By reading the detailed description of the preferred embodiments below, 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 to be a limitation of the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components.

[0022] In the drawings:

[0023] Figure 1 Schematically shows a structural diagram of a four-way valve assembly provided according to Embodiment 1 of the present utility model;

[0024] Figure 2 Schematically shows another structural diagram of a four-way valve assembly provided according to Embodiment 1 of the present utility model;

[0025] Figure 3Schematically shown is a schematic structural diagram of a four-way valve assembly provided according to the second embodiment of the present utility model;

[0026] Figure 4 Schematically shown is a schematic structural diagram of a four-way valve assembly provided according to the third embodiment of the present utility model;

[0027] Figure 5 Schematically shown is a schematic structural diagram of a filtering component provided according to the third embodiment of the present utility model;

[0028] Figure 6 For Figure 5 partial enlarged view of part a;

[0029] Figure 7 Schematically shown is a schematic structural diagram of another filtering component provided according to the third embodiment of the present utility model;

[0030] Figure 8 For Figure 7 partial enlarged view of part b;

[0031] Figure 9 Schematically shown is a schematic structural diagram of yet another filtering component provided according to the third embodiment of the present utility model;

[0032] Figure 10 Schematically shown is a schematic diagram of the refrigerant flow path of a heating, ventilation, and air conditioning (HVAC) device provided according to the fifth embodiment of the present invention.

[0033] The reference numerals are as follows:

[0034] 100, four-way valve assembly;

[0035] 10, four-way valve body; 11, main valve pipe; 12, first pipe joint; 13, second pipe joint; 14, third pipe joint; 15, fourth pipe joint; 16, pilot valve; 17, mounting member; 171, connection hole; 172, upturned portion;

[0036] 20, first pressure detection device; 21, first conducting member; 22, second conducting member; 221, bent portion; 2211, mounting space;

[0037] 30, second pressure detection device;

[0038] 40, check valve;

[0039] 50, filter; 51, filter cartridge; 52, first filter element; 53, second filter element;

[0040] 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

[0041] 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.

[0042] It should be understood that the terms used herein are for the purpose of describing specific exemplary 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 "comprising", "including", "containing", and "having" 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 explicitly stated as the order of performance. It should also be understood that additional or alternative steps may be used.

[0043] 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 region, layer, or section. Unless the context clearly indicates otherwise, terms such as "first" and "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 exemplary embodiments.

[0044] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0045] Embodiment 1

[0046] Combined with Figure 1 and attached Figure 2 As shown, this embodiment provides a four-way valve assembly 100, including a four-way valve body 10 and a first pressure detecting device 20, wherein the four-way valve body 10 of this embodiment includes a main valve tube 11, a first pipe joint 12, a second pipe joint 13, a third pipe joint 14 and a fourth pipe joint 15, the main valve tube 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, and a pilot valve 16 is installed outside the main valve tube 11, the pilot valve 16 is connected to the chamber of the main valve tube 11 through capillaries at both ends, and the pilot valve 16 can drive the switching mechanism to operate for switching.

[0047] 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 sections extending outward from the side wall of the main valve pipe 11. The one-way valve 40 on the first pipe joint 12 is used to connect the exhaust pipe 200 of the HVAC equipment. The exhaust pipe 200 can be understood as a D pipe used to connect the exhaust port of the compressor 900. The first pipe joint 12 is provided with an air inlet at the end away from the four-way valve body 10. The air inlet is used to connect to 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 100 through the exhaust pipe 200 and the first pipe joint 12 in turn.

[0048] 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 radial direction of the four-way valve body 10. The refrigerant in the four-way valve assembly 100 can flow back to the compressor 900 through the second pipe joint 13 and the air intake pipe 300 in turn.

[0049] The third pipe joint 14 is used to connect the first refrigerant flow path 400, which can be understood as the E pipe 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 the C pipe 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.

[0050] It should be noted that since the basic working principle of the four-way valve is well-known to those skilled in the art, this embodiment will not describe it in detail. Those skilled in the art can refer to the relevant technology for understanding.

[0051] Different from the related art where a pressure sensor and a four-way valve are connected through an intermediate structure (such as a bracket, a pipeline, etc.), the first pressure detection device 20 of this embodiment is directly integrated on the four-way valve body 10 and is connected to the first pipe joint 12 on the four-way valve body 10. The first pressure detection device 20 can be installed on the part of the first pipe joint 12 except the check valve 40, or on the check valve 40.

[0052] The first pressure detection device 20 is used to detect the pressure information in the first pipe joint 12. This 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 to automatically or manually adjust the opening degree of the four-way valve to achieve the required flow rate adjustment of the system. In addition, through the first pressure detection device 20, the change of the fluid pressure in the system can be monitored in real time, which helps to diagnose problems such as pipeline blockage, valve failure or system leakage in a timely manner. The above-mentioned high-pressure information refers to the pressure range that can be between dozens 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 may be between 3000 kPa (3 MPa) and 4500 kPa (4.5 MPa).

[0053] In this embodiment, the first pressure detection device 20 is directly installed on the first pipe joint 12, omitting the intermediate structure for connecting the first pressure detection device 20 to the four-way valve body 10 respectively, so that the body structure 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.

[0054] As used in this embodiment, "direct installation" means that at least a part of one component is directly connected to another component. For example, at least a part of the first pressure detection device 20 in this embodiment is directly connected to the first pipe joint 12. Similarly, the direct installation of the following second pressure detection device 30 can also be understood in this way. Different from the above "direct installation", in the related art, the first pressure detection device 20 and the second pressure detection device 30 are installed on the exhaust pipe of the compressor.

[0055] In order to detect the pressure information in the second pipe joint 13, in some examples, optionally, the four-way valve assembly 100 of this embodiment further includes a second pressure detection device 30. The second pressure detection device 30 has the same or similar structure as the aforementioned first pressure detection device 20. For example, both of them can be pressure sensors. The detection ranges of the second pressure detection device 30 and the first pressure detection device 20 can be different. For example, the first pressure detection device 20 can detect high-pressure information, and the second pressure detection device 30 is used to detect the low-pressure information of the second pipe joint 13. The low-pressure information can be between dozens of kilopascals and hundreds of kilopascals, for example, between 300 kPa (0.3 MPa) and 700 kPa (0.7 MPa).

[0056] Similar to the installation method of the first pressure detection device 20, the second pressure detection device 30 of this embodiment is also directly installed on the second pipe joint 13 and is in communication with the second pipe joint 13, thereby further saving the space inside the machine body and simplifying the structure.

[0057] The first pressure detection device 20 and the second pressure detection device 30 of this embodiment can both include a housing and an internal pressure sensing element. The materials of the housing and the first pipe joint 12 and the second pipe joint 13 can be the same or similar. The housing can also include a pipe section for connecting and communicating with the first pipe joint 12 or the second pipe joint 13. This pipe section is different from the existing intermediate pipe for connecting the sensor and the four-way valve. In this embodiment, the length of the pipe section of the housing is small and belongs to the housing or a part of the sensor.

[0058] In some examples, optionally, the first pressure detection device 20 can be integrally connected to the first pipe joint 12, and the second pressure detection device 30 can also be integrally connected to the second pipe joint 13. The integrally connected methods described in this embodiment include welding, bonding, hot melt connection, etc., and can also include the method of integrally forming during processing.

[0059] In addition, the four-way valve assembly 100 of this embodiment further includes a check valve 40. The check valve 40 is a part of the first pipe joint 12. The function of the check valve 40 is to allow the refrigerant to enter the four-way valve assembly 100 only from the compressor and prevent the refrigerant from flowing back from the four-way valve assembly 100 to the compressor.

[0060] Specifically, the one-way valve 40 is used to connect the exhaust port of the compressor 900 through the exhaust pipe 200. The one-way valve 40 is configured to switch between an open state and a closed state. In the open state, the one-way valve 40 connects the first pipe joint 12 and the exhaust port. In the closed state, the one-way valve 40 cuts off the connection between the first pipe joint 12 and the exhaust port of the compressor.

[0061] The one-way valve 40 of this embodiment includes a valve pipe and a valve core (not shown) connected to the valve pipe, and the valve pipe is directly integrally formed with the first pipe joint 12 or is an integrally connected structure, thereby realizing the integration of the one-way valve 40 and the first pipe joint 12. The specific structure of the one-way valve 40 of this embodiment is the same as or similar to that of the related art, except that the installation position is different, so this embodiment does not make too much description of the specific structural form of the one-way valve.

[0062] In order to facilitate the assembly of the pilot valve 16, the present embodiment also improves the structure of the four-way valve assembly 100. In some examples, optionally, the four-way valve assembly 100 also includes a mounting member 17, and the mounting member 17 is provided with a connecting hole 171 for the first pipe joint 12 to pass through. The mounting member 17 is sleeved on the first pipe joint 12 through the connecting hole 171, and the pilot valve 16 is connected to the mounting member 17.

[0063] The mounting member 17 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 17 of this embodiment facing the main valve tube 11 may be designed as an arc surface, which fits the outer wall surface of the main valve tube 11 .

[0064] Furthermore, the mounting member 17 may be connected to the outer wall of the main valve tube 11 by means of bolts, screws and other components, thereby further improving the installation stability of the mounting member 17 and the pilot valve 16 .

[0065] One end of the mounting member 17 close to the pilot valve 16 is provided with a raised portion 172 bent relative to the mounting member 17 . The pilot valve 16 can be mounted on the raised portion 172 by means of bolts or other components and fit against the outer wall of the main valve tube 11 .

[0066] Embodiment 2

[0067] The four-way valve body 10 of this embodiment is the same as that of the first embodiment, except that this embodiment uses a first pressure detection device 20 to simultaneously collect pressure information in the first pipe joint 12 and the second pipe joint 13 .

[0068] Combined with Figure 3As shown, a part of the first pressure detection device 20 of this embodiment is installed on the first pipe joint 12, and another part is installed on the second pipe joint 13. The first pressure detection device 20 is configured to be able to detect the pressure information of the first pipe joint 12 and the second pipe joint 13 simultaneously.

[0069] Such a first pressure detection device 20 includes a pressure detection mechanism, a first conduction member 21, and a second conduction member 22. The pressure detection mechanism may include one or more pressure detection elements. The circuit of one pressure detection element can separately process and distinguish the pressure signals from the first pipe joint 12 and the second pipe joint 13. The pressure detection mechanism is located inside the housing, so it is not shown in the figure. Of course, it can also be that two pressure detection elements are integrated in a sensor housing. One of them is directly connected to the first conduction member 21, and the other is directly connected to the second conduction member 22. The two pressure detection elements separately process the pressure signals from the first pipe joint 12 and the second pipe joint 13 (this implementation manner is not shown in the figure).

[0070] The pressure detection mechanism of this embodiment can be located inside the sensor housing. One end of the first conduction member 21 is connected and communicated with the housing of the pressure detection mechanism, and the other end of the first conduction member 21 is connected and communicated with the first pipe joint 12.

[0071] Similarly, one end of the second conduction member 22 of this embodiment is connected and communicated with the pressure detection mechanism, and the other end of the second conduction member 22 is connected and communicated with the second pipe joint 13. The pressure detection mechanism is configured to detect the pressure information in the first pipe joint 12 through the first conduction member 21 and detect the pressure information in the second pipe joint 13 through the second conduction member 22.

[0072] The first conduction member 21 and the second conduction member 22 can be rigid or flexible pipe structures. As a part of the first pressure detection device 20, they are used to assist the pressure detection mechanism to collect the pressure information of the first pipe joint 12 and the second pipe joint 13.

[0073] This structure integrates the first pressure detection device 20 and the second pressure detection device 30 in Embodiment 1 so that only the first pressure detection device 20 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 100, and reduce the volume of the machine body.

[0074] In some examples, optionally, the first conduction member 21 can be integrally connected to the first pipe joint 12, and the second conduction member 22 can also be integrally connected to the second pipe joint 13. The integral connection methods include welding, bonding, hot melt connection, etc., and can also include the method of integral molding during processing.

[0075] In order to further optimize the space and avoid interfering with the structure of the pilot valve 16 and other structures, in some examples, optionally, the second conducting member 22 of this embodiment is provided with a bending portion 221. The bending portion 221 faces the main valve pipe 11, the first pipe joint 12, and the second pipe joint 13, and forms intervals with a part of the main valve pipe 11, a part of the first pipe joint 12, and a part of the second pipe joint 13 respectively, so that the bending portion 221, the main valve pipe 11, a part of the main valve pipe 11, a part of the first pipe joint 12, and a part of the second pipe joint 13 enclose an installation space 2211.

[0076] A part of the pilot valve 16 of this embodiment is located in the installation space 2211, so that the possibility of interference between the second conducting member 22 and the pilot valve 16 is reduced. Moreover, when the second conducting member 22 is a rigid structure, the second conducting member 22 can also be used to support and protect the outside of the pilot valve 16.

[0077] Embodiment Three

[0078] Combined with the attached Figure 4 As shown, different from the above-mentioned Embodiment One and Embodiment Two, the four-way valve assembly 100 of this embodiment further includes a filter 50. The filter 50 is directly connected to the third pipe joint 14 of the four-way valve body 10 and is used to filter the refrigerant in the third pipe joint 14.

[0079] That is, the filter 50 is directly integrated on the third pipe joint 14 of this embodiment, and there are two structural forms of the filter 50.

[0080] The first one is as Figures 5 - 8 shown. The filter 50 includes a filter cartridge 51 and one or more first filter elements 52 located in the filter cartridge 51. The radial dimension of the filter cartridge 51 can be greater than the radial dimension of the third pipe joint 14 as shown in Figure 5 and 6 shown, or the radial dimension of the filter cartridge 51 can be equal to or less than the radial dimension of the third pipe joint 14 as shown in Figure 7 and 8 shown. One end of the filter cartridge 51 is directly installed at the air outlet of the third pipe joint 14. The connection manner between the filter cartridge 51 and the third pipe joint 14 of this embodiment can be an integral connection manner such as welding. The first filter element can be a structure such as a filter screen to filter the refrigerant flowing out of the third pipe joint 14. The filter cartridge 51 and the third pipe joint 14 can be connected by welding, and the welding points can be the structure between the two as shown in Figure 6 and 8 shown.

[0081] As Figure 9As shown in the figure, the second method is to directly install the filter 50 inside the third pipe joint 14 to filter the refrigerant inside the third pipe joint 14. The filter 50 of this structure may include one or more second filter elements 53, and the second filter element 53 is directly installed inside the third pipe joint 14. The second filter element 53 may also be a structure such as a filter mesh. The filter 50 of this structure occupies less space in the machine body compared to the first method, and has a higher degree of integration.

[0082] Embodiment 4

[0083] Combined with the attached Figure 10 As shown in the figure, this embodiment provides an outdoor unit 2000 of a heating, ventilation and air conditioning (HVAC) device, including a housing (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 100 as described in any one of the above Embodiments 1 to 3; the four-way valve assembly 100 is respectively connected and communicated with the compressor 900 and the heat exchanger.

[0084] Specifically, the first pipe joint 12 of the four-way valve assembly 100 may be connected to the exhaust port of the compressor 900 through an exhaust pipe 200, the second pipe joint 13 may be connected to the suction port of the compressor 900 through a suction pipe 300, the third pipe joint 14 may be connected to the first heat exchanger 600 through a 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 HVAC device through a second refrigerant flow path 500.

[0085] 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 an expansion valve 410 and a 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 separation, and then returns to the compressor again to complete the refrigerant cycle.

[0086] Regarding the structure of other parts of the outdoor unit 2000 of the HVAC device except the four-way valve assembly 100, please refer to the related art, and this application will not elaborate further here.

[0087] Embodiment 5

[0088] Combined with the attached Figure 10As shown, this embodiment provides a heating, ventilation, and air conditioning (HVAC) device, including the outdoor unit 2000 of the HVAC device shown in Embodiment IV. In some embodiments, the HVAC device further includes an indoor unit 3000 of the HVAC device. The indoor unit 3000 of the HVAC device and the outdoor unit 2000 of the HVAC device are connected through pipelines.

[0089] Since the refrigerant cycle has been introduced in Embodiment IV, it will not be elaborated in this embodiment. In addition, for other structures of the indoor unit 3000 of the HVAC device, reference can be made to the related art, and this embodiment will not describe them in detail either.

[0090] The above are only the preferred specific embodiments of the present utility model. The embodiments can be combined and replaced with each other, but the protection scope of the present utility model 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 utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A four-way valve assembly, applied to HVAC equipment with a compressor, characterized in that: include: The four-way valve body comprises a main valve pipe and a first pipe joint connected to the main valve pipe, a one-way valve is provided at one end of the first pipe joint away from the main valve pipe, the one-way valve is used to connect to an exhaust pipe, the exhaust pipe is used to connect to an exhaust port of the compressor, the one-way valve is configured to switch between an open state and a closed state, when the one-way valve is in the open state, the one-way valve conducts the first pipe joint and the exhaust port, when the one-way valve is in the closed state, the one-way valve cuts off the connection between the first pipe joint and the exhaust port; as well as The first pressure detection device is installed on the first pipe joint and is connected to the first pipe joint. The first pressure detection device is used to detect pressure information in the first pipe joint.

2. The four-way valve assembly according to claim 1, characterized in that: The four-way valve assembly also includes a second pipe joint and a second pressure detection device, the second pipe joint is used to connect to the intake pipe, the intake pipe is used to connect to the return air port of the compressor, the second pressure detection device is installed on the second pipe joint and is connected to the second pipe joint, and the second pressure detection device is used to detect the pressure information in the second pipe joint.

3. The four-way valve assembly according to claim 2, characterized in that: The first pressure detection device is integrally connected to the first pipe joint; And / or, the second pressure detection device is integrally connected to the second pipe joint.

4. The four-way valve assembly according to claim 1, characterized in that: The four-way valve assembly also includes a second pipe joint, which 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 first pressure detection device is also connected and connected to the second pipe joint, and the first pressure detection device is configured to detect pressure information of the first pipe joint and pressure information of the second pipe joint.

5. The four-way valve assembly according to claim 4, characterized in that: The first pressure detection device includes a pressure detection mechanism, a first conductive member and a second conductive member, one end of the first conductive member is connected and communicated with the pressure detection mechanism, the other end of the first conductive member is connected and communicated with the first pipe joint, one end of the second conductive member is connected and communicated with the pressure detection mechanism, the other end of the second conductive member is connected and communicated with the second pipe joint, the pressure detection mechanism is configured to detect pressure information in the first pipe joint through the first conductive member, and detect pressure information in the second pipe joint through the second conductive member.

6. The four-way valve assembly according to claim 5, characterized in that: The first conducting member is integrally connected to the first pipe joint; And / or, the second conducting member is integrally connected to the second pipe joint.

7. The four-way valve assembly according to claim 6, characterized in that: The second conducting member is provided with a bending portion, which is arranged facing the main valve pipe, the first pipe joint and the second pipe joint, and forms an installation space with the main valve pipe, the first pipe joint and the second pipe joint.

8. The four-way valve assembly according to claim 7, characterized in that: The four-way valve assembly further includes a pilot valve, which is installed on the four-way valve body, and a portion of the pilot valve is located in the installation space.

9. The four-way valve assembly according to any one of claims 1 to 8, characterized in that: The four-way valve assembly also includes a filter, and the four-way valve body also includes a third pipe joint arranged on the main valve pipe, 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 filter is connected to the third pipe joint and is used to filter the refrigerant flowing through the third pipe joint.

10. The four-way valve assembly according to claim 9, characterized in that: The third pipe joint is provided with an air outlet, the filter comprises a filter cartridge and a first filter element located in the filter cartridge, one end of the filter cartridge is installed in the air outlet, and is connected to the third pipe joint through the air outlet.

11. The four-way valve assembly according to claim 9, characterized in that: The filter comprises a second filter element, and the second filter element is installed in the third pipe joint.

12. 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 11, wherein the heat exchanger, the compressor and the four-way valve assembly are all arranged in the shell, the main valve pipe of the four-way valve assembly is connected between the compressor and the heat exchanger, the first pipe joint of the four-way valve assembly is connected to the exhaust port of the compressor, and the second pipe joint of the four-way valve assembly is connected to the return air port of the compressor.

13. A HVAC equipment, characterized in that: It comprises a HVAC equipment indoor unit and a HVAC equipment outdoor unit as claimed in claim 12, wherein the HVAC equipment indoor unit and the HVAC equipment outdoor unit are connected via a pipeline.

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