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 and a first temperature detection device, the valve body comprises a main valve pipe and a first pipe joint and a second pipe joint which are connected to the main valve pipe, one of the first pipe joint and the second pipe joint is used for communicating with an exhaust port of the compressor, and the other one of the first pipe joint and the second pipe joint is used for communicating with an air return port of the compressor; the first temperature detection device is installed on the first pipe joint and used for detecting the temperature of the first pipe joint. The first temperature detection device is directly installed on the first pipe connector, a middle pipeline between the first temperature detection device and the first pipe connector is omitted, and therefore the machine body structure of the outdoor unit of the heating and ventilation equipment can be simplified to a certain degree, the overall size of the machine body can be reduced, and certain production and manufacturing cost can also be reduced. In addition, the first temperature detection device can directly detect the temperature of the first pipe joint, the detection is more visual, and the accuracy is higher.

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 Art

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

[0003] The four-way valve assembly 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 assembly needs to perform temperature detection to ensure the stable operation of heating, ventilation and air conditioning equipment. Specifically, it is connected between the four-way valve assembly and the temperature detection component through an intermediate pipeline. This structure makes 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 valve body and a first temperature detection device. The valve body includes a main valve pipe, a first pipe joint and a second pipe joint arranged on the main valve pipe. The first pipe joint is used to connect an exhaust pipe, and the exhaust pipe is used to connect the exhaust port of the compressor. The second pipe joint is used to connect an intake pipeline, and the intake pipeline is used to connect the return air port of the compressor. The first temperature detection device is installed on the first pipe joint and is used to detect the temperature of the first pipe joint.

[0007] According to the four-way valve assembly provided by the utility model, the first temperature detection device is directly installed on the first pipe joint, omitting the intermediate pipeline between the first temperature detection device and the first pipe joint, so as to simplify the body structure of the outdoor unit of heating, ventilation and air conditioning equipment to a certain extent, reduce the overall volume of the body, and also reduce a certain production cost. In addition, the first temperature detection device can directly detect the temperature of the first pipe joint, with more intuitive detection and higher accuracy.

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

[0009] In some embodiments of the present utility model, the first temperature detection device includes a first heat conducting member and a first temperature detection member. The first heat conducting member is installed on the first pipe joint and is in heat conducting connection with the first pipe joint. The first heat conducting member is provided with a first accommodation cavity, and the first temperature detection member is installed in the first accommodation cavity and is in contact with the inner wall of the first heat conducting member.

[0010] In some embodiments of the present utility model, one end of the first heat conducting member is provided with a first opening, and the first opening is communicated with the first accommodation cavity. The first temperature detection member is inserted into the first accommodation cavity through the first opening.

[0011] In some embodiments of the present utility model, the four-way valve assembly further includes a second temperature detection device. The second temperature detection device is installed on the second pipe joint and is used for detecting the temperature of the second pipe joint.

[0012] In some embodiments of the present utility model, the first pipe joint includes a main pipe section and a check valve pipe section that are communicated with each other. The main pipe section is located between the main valve pipe and the check valve pipe section. The main pipe section is connected and communicated with the main valve pipe. The check valve pipe section is used for connecting the exhaust port of the compressor. A valve core is arranged inside the check valve pipe section, and the valve core is used for controlling the one-way conduction of the check valve pipe section from the check valve pipe section to the main pipe section.

[0013] In some embodiments of the present utility model, the four-way valve assembly further includes a first pressure switch. The first pipe joint is provided with a first interface, and the first pressure switch is installed on the first interface and is communicated with the first pipe joint through the first interface; and / or, the four-way valve assembly further includes a second pressure switch. The second pipe joint is provided with a second interface, and the second pressure switch is installed on the second interface and is communicated with the second pipe joint through the second interface.

[0014] In some embodiments of the present utility model, the four-way valve assembly further includes a first pressure detection device. The first pipe joint is provided with a third interface, and the first pressure detection device is installed on the third interface and is communicated with the first pipe joint through the third interface; and / or, the four-way valve assembly further includes a second pressure detection device. The second pipe joint is provided with a fourth interface, and the second pressure detection device is installed on the fourth interface and is communicated with the second pipe joint through the fourth interface.

[0015] In some embodiments of the present utility model, the four-way valve assembly further includes a third pressure detection device. The third pressure detection device is communicated with the first pipe joint and the second pipe joint respectively, and is used for detecting the pressure information inside the first pipe joint and the second pipe joint.

[0016] In some embodiments of the present utility model, the third pressure detection device includes a pressure sensing element, a first conduction member, and a second conduction member. The first pipe joint is provided with a fifth interface, and the second pipe joint is provided with a sixth interface. One end of the first conduction member is connected to and communicated with the pressure sensing element, the other end of the first conduction member is installed at the fifth interface and is communicated with the first pipe joint through the fifth interface. One end of the second conduction member is connected to and communicated with the pressure sensing element, the other end of the second conduction member is installed at the sixth interface and is communicated 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 conduction member and detect the pressure information in the second pipe joint through the second conduction member.

[0017] In some embodiments of the present utility model, the valve body further includes a third pipe joint disposed on the main valve pipe. The third pipe joint is used to communicate with a first refrigerant flow path, and the first refrigerant flow path is used to communicate with the heat exchanger of the heating and ventilation equipment. The four-way valve assembly further includes a filtering device, and the filtering device is installed on the third pipe joint and is used to filter the refrigerant flowing through the third pipe joint.

[0018] In a second aspect, the present utility model provides an outdoor unit of heating and ventilation equipment, including a housing, a heat exchanger, a compressor, and a four-way valve assembly according to 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.

[0019] In a third aspect, the present utility model provides a heating and ventilation equipment, including an indoor unit of heating and ventilation equipment and an outdoor unit of heating and ventilation equipment according to 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 by pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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. In the drawings:

[0021] Figure 1 Schematically shows a structural diagram of a four-way valve assembly provided according to Embodiment 1 of the present utility model;

[0022] Figure 2 Schematically shows a structural diagram of a first temperature detection device provided according to Embodiment 1 of the present utility model;

[0023] Figure 3Schematically shows a schematic structural diagram of a four-way valve assembly provided according to Embodiment 2 of the present utility model;

[0024] Figure 4 Schematically shows a schematic structural diagram of a four-way valve assembly provided according to Embodiment 3 of the present utility model;

[0025] Figure 5 Schematically shows a schematic structural diagram of a filtering component provided according to Embodiment 3 of the present utility model;

[0026] Figure 6 is Figure 5 an enlarged view of part a;

[0027] Figure 7 Schematically shows a schematic structural diagram of another filtering component provided according to Embodiment 3 of the present utility model;

[0028] Figure 8 is Figure 7 an enlarged view of part b;

[0029] Figure 9 Schematically shows a schematic structural diagram of yet another filtering component provided according to Embodiment 3 of the present utility model;

[0030] Figure 10 Schematically shows a schematic diagram of the refrigerant flow path of a heating, ventilation, and air conditioning (HVAC) device provided according to Embodiment 5 of the present invention.

[0031] The reference numerals are as follows:

[0032] 100, four-way valve assembly; 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; 17, mounting member; 171, connection hole; 172, upturned portion; 20, first temperature detection device; 21, first heat conducting member; 211, first accommodation cavity; 212, first opening; 22, first temperature detection element; 30, second temperature detection device; 40, first pressure switch; 50, second pressure switch; 60, first pressure detection device; 70, second pressure detection device; 80, filtering device; 81, filter cartridge; 82, first filter element; 83, second filter element; 90, third pressure detection device; 91, pressure sensing mechanism; 92, first conducting member; 93, second conducting member; 931, bent portion; 200, exhaust pipe; 300, intake pipe; 400, first refrigerant flow path; 410, expansion valve; 420, liquid side stop valve; 500, second refrigerant flow path; 510, gas side stop valve; 600, first heat exchanger; 700, second heat exchanger; 800, gas-liquid separator; 900, compressor; 2000, outdoor unit of HVAC device; 3000, indoor unit of HVAC device. Detailed Implementation Modes

[0033] The exemplary implementation modes of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary implementation modes 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 implementation modes set forth herein. On the contrary, these implementation modes are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0034] It should be understood that the terms used herein are for the purpose of describing specific example implementation modes 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 the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0035] Although terms such as first, second, and third 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" 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 example implementation modes.

[0036] 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 with respect to another element or feature. These relative relationship terms are, for example, "inner", "outer", "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.

[0037] Embodiment 1

[0038] Combined with the attached Figure 1 As shown, this embodiment provides a four-way valve assembly 100, including a valve body 10. The valve body 10 includes a main valve pipe 11, a first pipe joint 12, a second pipe joint 13, a third pipe joint 14, a fourth pipe joint 15, and a pilot valve 16. The main valve pipe 11 is a cylindrical structure with both ends closed and a chamber provided 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 communicated with 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.

[0039] 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 100 through the exhaust pipe 200 and the first pipe joint 12 in sequence.

[0040] The second pipe joint 13 is used to connect the intake pipe 300 of the heating and ventilation equipment. The intake pipe 300 can be understood as the S pipe used to connect the suction 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 100 can flow back into the compressor 900 through the second pipe joint 13 and the intake pipe 300 in sequence.

[0041] 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.

[0042] It should be noted that since the basic working principle of the four-way valve assembly 100 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.

[0043] Different from the related art in which the temperature detection structure and the first pipe joint 12 are connected through an intermediate pipe, in the embodiment of the present application, the first temperature detection device 20 is directly installed on the first pipe joint 12 to detect the temperature of the first pipe joint 12, so as to indirectly measure the temperature of the refrigerant in the first pipe joint 12. In addition, the four-way valve assembly 100 of this embodiment may further include a second temperature detection device 30, which is directly installed on the second pipe joint 13 to detect the temperature of the second pipe joint 13, so as to indirectly measure the temperature of the refrigerant in the second pipe joint 13.

[0044] Combined with the attached Figure 2 As shown, in some examples, the first temperature detection device 20 of this embodiment includes a first heat conducting member 21 and a first temperature detection member 22. The first heat conducting member 21 can be wholly or partly made of heat conducting materials, which can be aluminum metals or alloy materials such as iron, copper, etc., or heat conducting materials such as carbon fiber, ceramics, etc. The first temperature detection member 22 can be a temperature detection element such as a temperature sensor.

[0045] Specifically, the material of the first heat conducting member 21 can 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.

[0046] The first heat conducting member 21 can be in a shape similar to a cylinder, a square column, etc. An arc surface is provided on the outer side of the first heat conducting member 21, 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 21 on the first pipe joint 12. A first accommodation cavity 211 is provided inside the first heat conducting member 21, and the first temperature detection member 22 is installed in the first accommodation cavity 211 and is in contact with the inner wall of the first heat conducting member 21. When performing temperature detection, the first heat conducting member 21 transfers the temperature of the first pipe joint 12 to the first temperature detection member 22, realizing the detection of the temperature of the first pipe joint 12.

[0047] To facilitate the installation of the first temperature detection component 22 and facilitate the connection of the first temperature detection component 22 to other control structures through wires, a first opening 212 may be provided at one end (the upper end in the figure) of the first heat conducting component 21 in this embodiment. The first temperature detection component 22 is inserted into the first accommodation cavity 211 through the first opening 212. After the first temperature detection component 22 is installed in the first accommodation cavity 211, it is necessary to ensure that the first temperature detection component 22 can be closely attached to or pressed against the inner wall surface of the first heat conducting component 21. Therefore, the shape of the first temperature detection component 22 needs to match the shape of the first accommodation cavity 211.

[0048] The structure of the second temperature detection device 30 in this embodiment may be the same as or different from that of the foregoing first temperature detection device 20. When the structure of the second temperature detection device 30 in this embodiment is the same as that of the first temperature detection device 20, the second temperature detection device 30 includes a second heat conducting component and a second temperature detection component (not labeled in the figure) installed in the second heat conducting component. The second heat conducting component has the same structure and material as the foregoing first heat conducting component 21, and the second temperature detection component has the same structure as the foregoing first temperature detection component 22. Therefore, this embodiment will not describe the second temperature detection device 30 in too much detail, and those skilled in the art can understand the second temperature detection device 30 by referring to the first temperature detection device 20.

[0049] It should be noted that the "direct installation" described 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 device 20 in this embodiment is directly connected to the first pipe joint 12. Similarly, the direct installation in the following embodiments can also be understood in this way.

[0050] Embodiment Two

[0051] Combined with the attached Figure 3 As shown in the figure, on the basis of the foregoing Embodiment One, in order to further optimize the internal space of the body of the outdoor unit of the HVAC equipment and simplify the structure, this embodiment also directly integrates the one-way valve 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 one-way valve pipe section 122 that are connected and communicate with each other. The main pipe section 121 and the one-way 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 one-way valve pipe section 122 and is connected to and communicates with the valve body 10.

[0052] The function of the one-way valve of this embodiment is to allow the refrigerant to enter the four-way valve assembly 100 only from the compressor, and to prevent the refrigerant from flowing back to the compressor from the four-way valve assembly 100. The one-way valve pipe section 122 is provided with the above-mentioned air inlet at one end away from the main pipe section 121, and the air inlet is used to connect to the exhaust port of the compressor. The one-way valve pipe section 122 is provided with a valve core (not shown in the figure) inside, and the valve core is used to open and close the connection between the air inlet and the main pipe section 121.

[0053] Furthermore, a valve seat and a retaining ring (not shown in the figure) may be provided in the one-way valve pipe section 122, and the valve core may move axially along the one-way 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 connects the air inlet and the main pipe section 121.

[0054] The above-mentioned structure in which the one-way valve is directly integrated into the first pipe joint 12 omits the intermediate connecting pipeline, thereby simplifying the machine structure, reducing the overall volume of the machine, and also reducing certain production costs to a certain extent.

[0055] In addition, the four-way valve assembly 100 of this embodiment also includes a first pressure switch 40 and a second pressure switch 50, which is different from the related art in which the pressure switches are connected through an intermediate structure (such as a bracket, a pipeline, etc.). Accordingly, this embodiment is provided with a first interface on the first pipe joint 12, and a second interface on the second pipe joint 13. The first pressure switch 40 is installed on the first interface and is connected to the first pipe joint 12 through the first interface, and the second pressure switch 50 is installed on the second interface and is connected to the second pipe joint 13 through the second interface.

[0056] It should be noted that since the first interface, the second interface and other interfaces are blocked by the first pressure switch 40 and the second pressure switch 50, etc., the interface structures of the first interface and the second interface and other interfaces are not marked in the drawings in this embodiment.

[0057] The first pressure switch 40 can be a high-pressure pressure switch, and the second pressure switch 50 can be a low-pressure pressure switch. The high-pressure information refers to the pipeline pressure range that can be between tens to hundreds of Pascals (Pa) to 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). The low-pressure information can be a pipeline pressure between tens of kilopascals and hundreds of kilopascals, such as between 300kPa (0.3MPa) and 700kPa (0.7MPa). The "low pressure" and "high pressure" in the remaining embodiments are understood in the same way as in this embodiment.

[0058] The first pressure switch 40 monitors and controls the high-pressure state of the HVAC equipment to ensure that the system operates within a safe range. Specifically, the first pressure switch 40 detects the pressure information in the first pipe joint 12. When the pressure exceeds the preset safety threshold, the first pressure switch 40 will cut off the power supply or send a signal to stop the operation of the compressor.

[0059] The second pressure switch 50 monitors and controls the low-pressure state of the HVAC equipment to ensure that the system operates within a safe range. Specifically, the second pressure switch 50 detects the pressure information in the second pipe joint 13. When the pressure is lower than the preset safety threshold, the second pressure switch 50 will cut off the power supply or send a signal to stop the operation of the compressor. The second pressure switch 50 can prevent the compressor from operating abnormally due to the low-pressure state, such as liquid operation or poor refrigeration effect.

[0060] In addition, different from the related art in which a pressure sensor and a four-way valve assembly 100 are connected through an intermediate structure (such as a bracket, a pipeline, etc.), the first pressure detection device 60 and the second pressure detection device 70 in this embodiment are directly integrated on the four-way valve assembly 100 and are connected to the first pipe joint 12 on the four-way valve assembly 100.

[0061] The first pressure detection device 60 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. Through the high-pressure information, the flow rate of the fluid can be calculated, 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 assembly 100 to achieve the required flow rate adjustment of the system. In addition, through the first pressure detection device 60, 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 a pressure range that can be between dozens to hundreds of pascals (Pa) to 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 3000 kPa (3 MPa) and 4500 kPa (4.5 MPa).

[0062] In this embodiment, the first pressure detection device 60 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 for the first pressure detection device 60 to be connected to the four-way valve assembly 100 respectively, thereby further simplifying the body structure, reducing the overall volume of the body, and also being able to reduce a certain production and manufacturing cost.

[0063] The second pressure detection device 70 has the same or similar structure to the aforementioned first pressure detection device 60. For example, both can be pressure sensors. The detection ranges of the second pressure detection device 70 and the first pressure detection device 60 can be different. For example, the first pressure detection device 60 can detect high-pressure information, and the second pressure detection device 70 is used to detect the low-pressure information of the second pipe joint 13.

[0064] Similar to the installation method of the first pressure detection device 60, the second pressure detection device 70 in 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 the space inside the machine body and simplifying the structure.

[0065] The first pressure detection device 60 and the second pressure detection device 70 in this embodiment can both include a housing and a pressure sensing element inside. 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 assembly 100. In this embodiment, the length of the pipe section of the housing is relatively small and belongs to the housing or a part of the sensor.

[0066] In some examples, optionally, the first pressure detection device 60 can be integrally connected to the first pipe joint 12, and the second pressure detection device 70 can also be integrally connected to the second pipe joint 13. The integrally connected methods in this embodiment include welding, bonding, hot melt connection, etc., and can also include the method of integrally forming during processing.

[0067] To facilitate the assembly of the pilot valve 16, this embodiment also makes improvements to the structure of the four-way valve assembly 100. In some examples, optionally, the four-way valve assembly 100 further includes a mounting member 17. The mounting member 17 is provided with a connection 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 connection hole 171, and the pilot valve 16 is connected to the mounting member 17.

[0068] The mounting member 17 in this embodiment can be in a plate-like or sheet-like structure. In order to be more stably connected to the valve body 10, the surface of the mounting member 17 facing the valve body 10 in this embodiment can be designed as an arc surface, and the arc surface fits the outer wall surface of the valve body 10.

[0069] Furthermore, the mounting member 17 can be connected to the outer wall of the valve body 10 by bolts, screws and other components, so as to further improve the installation stability of the mounting member 17 and the pilot valve 16. The mounting member 17 is provided with a raised portion 172 bent relative to the mounting member 17 at one end close to the pilot valve 16. The pilot valve 16 can be mounted on the raised portion 172 by bolts and other components, and fit with the outer wall of the valve body 10.

[0070] Embodiment 3

[0071] Combined with Figure 4 As shown, the pressure detection structure of this embodiment is different from that of the second embodiment. A part of the third pressure detection device 90 of this embodiment is installed on the first pipe joint 12, and the other part is installed on the second pipe joint 13. The third pressure detection device 90 is configured to be able to simultaneously detect the pressure information of the first pipe joint 12 and the second pipe joint 13.

[0072] This third pressure detection device 90 includes a pressure sensing mechanism 91, a first conductive member 92, and a second conductive member 93. The pressure sensing mechanism 91 may include one or two pressure sensing elements. When there is one pressure sensing element, the circuit of one pressure sensing element may process and distinguish the pressure signals from the first pipe joint 12 and the second pipe joint 13 respectively. The pressure sensing element is located in the housing, so it is not shown in the figure. Of course, two pressure sensing elements may also be integrated in a sensor housing, one of which is directly connected to the first conductive member 92, and the other is directly connected to the second conductive member 93, and the two pressure sensing elements process the pressure signals from the first pipe joint 12 and the second pipe joint 13 respectively (this embodiment is not shown in the figure).

[0073] The pressure sensing element of this embodiment may be located in the sensor housing, one end of the first conductive member 92 is connected and communicated with the housing of the pressure sensing element, and the other end of the first conductive member 92 is connected and communicated with the fifth interface of the first pipe joint 12. Similarly, one end of the second conductive member 93 of this embodiment is connected and communicated with the pressure sensing element, and the other end of the second conductive member 93 is connected and communicated with the sixth interface of the second pipe joint 13. The pressure sensing element is configured to detect pressure information in the first pipe joint 12 through the first conductive member 92, and detect pressure information in the second pipe joint 13 through the second conductive member 93.

[0074] The first conductive member 92 and the second conductive member 93 may be rigid or flexible tube structures, which are used as a part of the third pressure detection device 90 to assist the pressure sensing element in collecting pressure information of the first pipe joint 12 and the second pipe joint 13 .

[0075] This structure integrates the third pressure detection device 90 and the second pressure detection device 70 in the first embodiment, and only the third pressure detection device 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 100, and reduce the volume of the machine body.

[0076] In some examples, optionally, the first conduction member 92 can be integrally connected to the first pipe joint 12, and the second conduction member 93 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.

[0077] In order to further optimize the space and avoid the structure of the pilot valve 16 and other structures, in some examples, optionally, the second conduction member 93 of this embodiment is provided with a bent portion 931. The bent portion 931 faces the valve body 10, the first pipe joint 12, and the second pipe joint 13, and forms intervals with part of the valve body 10, part of the first pipe joint 12, and part of the second pipe joint 13 respectively, so that the bent portion 931, the valve body 10, part of the valve body 10, part of the first pipe joint 12, and part of the second pipe joint 13 enclose an installation space.

[0078] A part of the pilot valve 16 of this embodiment is located in the 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.

[0079] In addition, the four-way valve assembly 100 of this embodiment further includes a filtering device 80. The filtering device 80 is directly connected to the third pipe joint 14 of the four-way valve assembly 100 and is used to filter the refrigerant in the third pipe joint 14. That is, the filtering device 80 is directly integrated on the third pipe joint 14 of this embodiment, and there are two structural forms of the filtering device 80.

[0080] The first one is as Figure 3 、 5 shown in -8. The filtering device 80 includes a filter cylinder 81 and one or more first filter elements 82 located in the filter cylinder 81. The radial dimension of the filter cylinder 81 can be larger than the radial dimension of the third pipe joint 14. One end of the filter cylinder 81 is directly installed at the air outlet of the third pipe joint 14. The connection method between the filter cylinder 81 and the third pipe joint 14 in this embodiment can be an integral connection method such as welding. The first filter element 82 can be a structure such as a filter screen to filter the refrigerant flowing out of the third pipe joint 14.

[0081] The filter cylinder 81 can be Figure 5 and 6 shown with a radial dimension larger than that of the third pipe joint 14, or can be as Figure 7and 8 As shown, the radial dimension of the filter cartridge 81 is equal to or smaller than the radial dimension of the third pipe joint 14. The filter cartridge 81 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 in.

[0082] Combined with the attached Figure 9 As shown, the second type is that the filtering device 80 includes a second filter element 83, and the second filter element 83 is directly arranged in the third pipe joint 14 to filter the refrigerant in the third pipe joint 14. The filtering device 80 with this structure can include one or more second filter elements, and the second filter element is directly installed in the third pipe joint 14. The second filter element can also be a structure such as a filter net. The filtering device 80 with this structure occupies less space in the machine body than the first method, and has a higher degree of integration.

[0083] Embodiment 4

[0084] Combined with the attached Figure 10 As shown, 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 Embodiments 1 to 3 above; the four-way valve assembly 100 is respectively connected and communicated with the compressor 900 and the heat exchanger.

[0085] Specifically, the first pipe joint 12 of the four-way valve assembly 100 can be connected to the exhaust port of the compressor 900 through an exhaust pipe 200, the second pipe joint 13 can be connected to the suction port of the compressor 900 through a suction pipe 300, the third pipe joint 14 is connected to the first heat exchanger 600 through a first refrigerant flow path 400, and the fourth pipe joint 15 is connected to the second heat exchanger 700 of the indoor unit 3000 of the HVAC device through a second refrigerant flow path 500.

[0086] 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 a 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.

[0087] For the structures of other parts of the outdoor unit 2000 of the HVAC equipment except for the four-way valve assembly 100, please refer to the related technologies, and they will not be elaborated in this application.

[0088] Embodiment 5

[0089] Combined with the attached Figure 10 As shown, this embodiment provides an HVAC equipment, including the outdoor unit 2000 of the HVAC equipment shown in Embodiment 4. In some embodiments, the HVAC equipment further includes an indoor unit 3000 of the HVAC equipment, and the indoor unit 3000 of the HVAC equipment and the outdoor unit 2000 of the HVAC equipment are connected through pipelines.

[0090] Since the refrigerant cycle has been introduced in Embodiment 4, it will not be elaborated in this embodiment. In addition, for other structures of the indoor unit 3000 of the HVAC equipment, reference can be made to the related technologies, and this embodiment will not describe them in detail either.

[0091] As mentioned above, 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 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 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; The first temperature detection device is installed on the first pipe joint and is used to detect the temperature of the first pipe joint.

2. The four-way valve assembly according to claim 1, characterized in that: The first temperature detection device 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.

3. The four-way valve assembly according to claim 2, 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.

4. The four-way valve assembly according to claim 1, characterized in that: The four-way valve assembly further includes a second temperature detection device, which is installed on the second pipe joint and is used to detect the temperature of the second pipe joint.

5. The four-way valve assembly according to any one of claims 1 to 4, 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.

6. The four-way valve assembly according to any one of claims 1 to 4, characterized in that: The four-way valve assembly further includes a first pressure switch, the first pipe joint is provided with a first interface, the first pressure switch is installed on the first interface and is connected to the first pipe joint through the first interface; And / or, the four-way valve assembly further includes a second pressure switch, the second pipe joint is provided with a second interface, the second pressure switch is installed on the second interface and is connected to the second pipe joint through the second interface.

7. The four-way valve assembly according to any one of claims 1 to 4, characterized in that: The four-way valve assembly further includes a first pressure detection device, the first pipe joint is provided with a third interface, the first pressure detection device is installed on the third interface and is connected to the first pipe joint through the third interface; And / or, the four-way valve assembly further includes a second pressure detection device, the second pipe joint is provided with a fourth interface, the second pressure detection device is installed on the fourth interface and is connected to the second pipe joint through the fourth interface.

8. The four-way valve assembly according to any one of claims 1 to 4, characterized in that: The four-way valve assembly also includes a third pressure detection device, which is connected to the first pipe joint and the second pipe joint respectively and is used to detect pressure information in the first pipe joint and the second pipe joint.

9. The four-way valve assembly according to claim 8, characterized in that: The third pressure detection device includes a pressure sensing element, a first conductive piece and a second conductive piece. The first pipe joint is provided with a fifth interface, and 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.

10. The four-way valve assembly according to any one of claims 1 to 4, 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 filtering device, which is installed on the third pipe joint and is used to filter the refrigerant flowing through the third pipe joint.

11. 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 10, 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.

12. A HVAC equipment, characterized in that: It comprises a HVAC equipment indoor unit and a HVAC equipment outdoor unit as claimed in claim 11, wherein the HVAC equipment indoor unit and the HVAC equipment outdoor unit are connected via a pipeline.

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