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 piece, the four-way valve body comprises a main valve pipe and a first pipe connector, a second pipe connector, a third pipe connector and a fourth pipe connector which are connected to the main valve pipe, the first pipe connector is used for being connected with an exhaust port of the compressor, and the second pipe connector is used for being connected with an air return port of the compressor; the first pressure detection piece is directly installed on the first pipe joint and communicated with the first pipe joint, and the first pressure detection piece is used for detecting pressure information in the first pipe joint. The first pressure detection piece is directly installed on the first pipe connector, a middle pipeline for connecting the first pressure detection piece and the four-way valve body 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.

Description

Technical Field

[0001] The utility model relates to the technical field of heating, ventilation and air conditioning (HVAC) equipment, in particular to a four-way valve assembly, an outdoor unit of HVAC equipment and HVAC 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 plays a key control and regulation role in HVAC equipment, ensuring that the system can operate efficiently and stably, while meeting the requirements of different usage environments and needs.

[0004] The four-way valve needs to be connected to functional components such as a pressure sensor, a pressure switch and a filter to ensure the stable operation of HVAC equipment. However, these functional components such as the pressure sensor are independently distributed in the body of the outdoor unit of HVAC equipment and are connected to the four-way valve through complex pipelines, making the body structure complex, the volume bulky, 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 the complex body structure, bulky volume and high production cost of the existing outdoor unit of HVAC equipment. This purpose is achieved by the following technical solutions:

[0006] In a first aspect, the utility model provides a four-way valve assembly, which is applied to HVAC equipment with a compressor, and includes a four-way valve body and a first pressure detection component. The four-way valve body includes a main valve pipe and a first pipe joint and a second pipe joint arranged on the main valve pipe. The first pipe joint is used to communicate with an exhaust pipe, and the exhaust pipe is used to communicate with the exhaust port of the compressor. The second pipe joint is used to communicate with an intake pipe, and the intake pipe is used to communicate with the return air port of the compressor. The first pressure detection component is installed on the first pipe joint and is communicated with the first pipe joint, and the first pressure detection component 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 component is directly installed on the first pipe joint, omitting the intermediate structure for the first pressure detection component to be respectively connected to the four-way valve body, 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. In addition, by directly installing the first pressure detection component on the first pipe joint, the pressure information in the first pipe joint can be detected more accurately and intuitively.

[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 four-way valve assembly further includes a second pressure detection member, which is installed on the second pipe joint and communicated with the second pipe joint, and the second pressure detection member is used to detect the pressure information in the second pipe joint.

[0010] In some embodiments of the present utility model, the first pipe joint is provided with a first connection interface, and at least part of the first pressure detection member is installed in the first connection interface and communicated with the first pipe joint through the first connection interface; and / or, the second pipe joint is provided with a second connection interface, and at least part of the second pressure detection member is installed in the second connection interface and communicated with the second pipe joint through the second connection interface.

[0011] In some embodiments of the present utility model, the first pressure detection member is further connected and communicated with the second pipe joint, and the first pressure detection member is configured to detect the pressure information of the first pipe joint and the pressure information of the second pipe joint.

[0012] In some embodiments of the present utility model, the first pressure detection member includes a pressure sensing element, a first conduction member and a second conduction member; one end of the first conduction member is connected and communicated with the pressure sensing element, the other end of the first conduction member is directly connected and communicated with the first pipe joint, one end of the second conduction member is connected and communicated with the pressure sensing element, the other end of the second conduction member is directly connected and communicated with the second pipe joint, and 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.

[0013] In some embodiments of the present utility model, the first pipe joint is provided with a first connection interface, the first conduction member is installed in the first connection interface and communicated with the first pipe joint through the first connection interface; and / or, the second pipe joint is provided with a second connection interface, the second conduction member is installed in the second connection interface and communicated with the second pipe joint through the second connection interface.

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

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

[0016] In some embodiments of the present utility model, the four-way valve assembly further includes a mounting member, the mounting member is provided with a connection interface for the first pipe joint to pass through, the mounting member is sleeved on the first pipe joint through the connection interface, and the pilot valve is connected to the mounting member.

[0017] In some embodiments of the present utility model, the surface of the mounting member facing the main valve pipe is an arc surface, and the arc surface fits with the outer wall surface of the main valve pipe.

[0018] In some embodiments of the present utility model, the mounting member and the outer wall of the main valve pipe are fixedly connected through a connecting member.

[0019] In some embodiments of the present utility model, the four-way valve assembly further includes a check valve, the check valve is installed on the first pipe joint and is communicated with the first pipe joint.

[0020] In some embodiments of the present utility model, the check valve includes a valve pipe and a valve core connected inside the valve pipe, one end of the valve pipe is installed on the first pipe joint, and the valve pipe and the first pipe joint are of an integrally connected structure or an integrally formed structure.

[0021] 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 communicate with a first refrigerant flow path, the first refrigerant flow path is used to communicate with the heat exchanger of the heating and ventilation equipment, and the filter is connected to the third pipe joint and is used to filter the refrigerant flowing through the third pipe joint.

[0022] In some embodiments of the present utility model, the third pipe joint is provided with an air outlet, the filter includes a filter cartridge and a first filter element located in the filter cartridge, one end of the filter cartridge is installed on the air outlet and is communicated with the third pipe joint through the air outlet.

[0023] 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.

[0024] In some embodiments of the present utility model, the four-way valve assembly further includes a first pressure switch, the first pressure switch is installed on the first pipe joint and is communicated with the first pipe joint; and / or, the four-way valve assembly further includes a second pressure switch, the second pressure switch is installed on the second pipe joint and is communicated with the second pipe joint.

[0025] In some embodiments of the present utility model, the first pipe joint is provided with a third connection interface, and the first pressure switch is installed at the third connection interface and is communicated with the first pipe joint through the third connection interface; and / or, the first pipe joint is provided with a fourth connection interface, and the second pressure switch is installed at the fourth connection interface and is communicated with the first pipe joint through the fourth connection interface.

[0026] In some embodiments of the present utility model, the four-way valve assembly further includes a first temperature detection element, and the first temperature detection element is installed on the first pipe joint and is used for detecting the temperature inside the first pipe joint; and / or, the four-way valve assembly further includes a second temperature detection element, and the second temperature detection element is installed on the second pipe joint and is used for detecting the temperature inside the second pipe joint.

[0027] In some embodiments of the present utility model, the first pipe joint is provided with a fifth connection interface, and the first temperature detection element is installed at the fifth connection interface and is communicated with the first pipe joint through the fifth connection interface; and / or, the first pipe joint is provided with a sixth connection interface, and the second temperature detection element is installed at the sixth connection interface and is communicated with the first pipe joint through the sixth connection interface.

[0028] In a second aspect, the present utility model provides an outdoor unit of a heating and ventilation device, which includes a housing, a heat exchanger, a compressor, and a four-way valve assembly as described in any one of the above technical solutions; the 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 communicated between the compressor and the heat exchanger, the first pipe joint of the four-way valve assembly is communicated with the exhaust port of the compressor, and the second pipe joint of the four-way valve assembly is communicated with the suction port of the compressor.

[0029] In a third aspect, the present utility model provides a heating and ventilation device, which includes an indoor unit of a heating and ventilation device and an outdoor unit of a heating and ventilation device as described in any one of the above technical solutions, and the indoor unit of the heating and ventilation device and the outdoor unit of the heating and ventilation device are connected through pipelines. Description of the Drawings

[0030] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered as a limitation to the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0031] Figure 1 Schematically shows a structural schematic diagram of a four-way valve assembly provided in Embodiment 1 of the present utility model;

[0032] Figure 2 Schematically shows a schematic structural diagram of another four-way valve assembly provided according to Embodiment 1 of the present utility model;

[0033] Figure 3 Schematically shows a schematic structural diagram of a four-way valve assembly provided according to Embodiment 2 of the present utility model;

[0034] Figure 4 Schematically shows a schematic structural diagram of a four-way valve assembly provided according to Embodiment 3 of the present utility model;

[0035] Figure 5 Schematically shows a schematic structural diagram of a filter component provided according to Embodiment 3 of the present utility model;

[0036] Figure 6 is Figure 5 an enlarged view of part a;

[0037] Figure 7 Schematically shows a schematic structural diagram of another filter component provided according to Embodiment 3 of the present utility model;

[0038] Figure 8 is Figure 7 an enlarged view of part b;

[0039] Figure 9 Schematically shows a schematic structural diagram of yet another filter component provided according to Embodiment 3 of the present utility model

[0040] Figure 10 Schematically shows a schematic structural diagram of a four-way valve assembly provided according to Embodiment 4 of the present utility model;

[0041] Figure 11 Schematically shows a schematic structural diagram of a four-way valve assembly provided according to Embodiment 5 of the present utility model;

[0042] Figure 12 Schematically shows a schematic structural diagram of a four-way valve assembly provided according to Embodiment 6 of the present utility model;

[0043] Figure 13 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 utility model.

[0044] The reference numerals are as follows:

[0045] 100, four-way valve assembly;

[0046] 10. Four-way valve body; 11. Main valve pipe; 12. First pipe joint; 121. Air inlet; 13. Second pipe joint; 14. Third pipe joint; 15. Fourth pipe joint; 16. Pilot valve; 17. Mounting piece; 171. Connecting hole; 172. Lifting part;

[0047] 20. first pressure detection member; 21. first conductive member; 22. second conductive member; 221. bending portion; 2211. installation space;

[0048] 30. Second pressure detection member; 40. One-way valve;

[0049] 50. filter; 51. filter cartridge; 52. first filter element; 53. second filter element;

[0050] 60. First pressure switch; 70. Second pressure switch; 80. First temperature detection element; 90. Second temperature detection element;

[0051] 200, exhaust pipe; 300, air inlet 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, HVAC equipment outdoor unit; 3000, HVAC equipment indoor unit. DETAILED DESCRIPTION

[0052] 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 accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0053] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0054] 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 region, layer, or section. Unless the context clearly indicates otherwise, terms such as "first" and "second" and other numerical terms do not imply an order or sequence when used in this document. 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.

[0055] For ease of description, spatially relative relationship terms may be used herein to describe the relationship of one element or feature shown in the figure to another element or feature, such as "inner", "outer", "inside", "outside", "below", "beneath", "above", "over", etc. Such spatially relative relationship 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 flipped, an element described as "below" or "beneath" another element or feature will then be oriented "above" or "over" the other element or feature. Thus, the exemplary term "below" can include both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatially relative descriptors used in this document are to be interpreted accordingly.

[0056] Embodiment 1

[0057] Combined with the attached Figure 1 and the attached Figure 2 As shown, this embodiment provides a four-way valve assembly 100, which is applied to, including a four-way valve body 10 and a first pressure detection member 20. Among them, the four-way valve body 10 of this embodiment includes a main valve pipe 11, a first pipe joint 12, a second pipe joint 13, a third pipe joint 14, and a fourth pipe joint 15. The main valve pipe 11 is a cylindrical structure with both ends closed and a chamber inside. A switching mechanism (not shown in the figure) is provided in the chamber. A pilot valve 16 is installed outside the main valve pipe 11. The pilot valve 16 is communicated with the chamber of the main valve pipe 11 through capillary tubes at both ends, and the pilot valve 16 can drive the switching mechanism to act to reverse the refrigerant flow path in the four-way valve body 10.

[0058] 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.

[0059] 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.

[0060] The third pipe joint 14 is used to connect the first refrigerant flow path 400, which can be understood as an E-tube for connecting the first heat exchanger. The fourth pipe joint 15 is used to connect the second refrigerant flow path 500, which can be understood as a C-tube for connecting the second heat exchanger, so that the refrigerant can flow between the first heat exchanger and the second heat exchanger of the HVAC equipment.

[0061] 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 does not provide any detailed description thereof, and those skilled in the art may refer to relevant technologies for understanding.

[0062] Different from the related art in which the pressure sensor and the four-way valve are connected through an intermediate structure (such as a bracket, a pipeline, etc.), the first pressure detection component 20 of this embodiment is directly installed on the first pipe joint 12 of the four-way valve body 10 and is connected to the first pipe joint 12 on the four-way valve body 10.

[0063] 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 pressure detection component 20 of this embodiment is directly connected to the first pipe joint 12. Similarly, the direct installation of the second pressure detection component 30 described below can also be understood in this way. Different from the above-mentioned "direct installation", the related technology is to install the first pressure detection component 20 and the second pressure detection component 30 on the exhaust pipe of the compressor.

[0064] The first pressure detector 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. Based on the high-pressure information, the flow rate of the fluid can be calculated. Moreover, the high-pressure information can be fed back to the control system to automatically or manually adjust the opening degree of the four-way valve to achieve the required flow rate adjustment of the system. Additionally, through the first pressure detector 20, the change in the fluid pressure in the system can be monitored in real time, which helps to promptly diagnose problems such as pipeline blockage, valve failure, or system leakage. The above-mentioned high-pressure information refers to a 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).

[0065] In this embodiment, the first pressure detector 20 is directly installed on the first pipe joint 12, omitting the intermediate structure for the first pressure detector 20 to be connected to the four-way valve body 10 respectively. Thus, the structure of the machine body can be simplified to a certain extent, the overall volume of the machine body can be reduced, and the production and manufacturing cost can also be decreased to a certain extent. Additionally, since the first pressure detector 20 is directly installed on the first pipe joint 12, the pressure information in the first pipe joint 12 can be reflected more intuitively and accurately.

[0066] 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 detector 30. The second pressure detector 30 has the same or similar structure as the aforementioned first pressure detector 20. For example, both can be pressure sensors. The detection ranges of the second pressure detector 30 and the first pressure detector 20 can be different. For example, the first pressure detector 20 can detect high-pressure information, and the second pressure detector 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 several hundred kilopascals, such as between 300 kPa (0.3 MPa) and 700 kPa (0.7 MPa).

[0067] Similar to the installation method of the first pressure detector 20, the second pressure detector 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.

[0068] The first pressure detection member 20 and the second pressure detection member 30 in this embodiment may both include a housing and a pressure sensing element inside. The material of the housing may be the same as or similar to that of the first pipe joint 12 and the second pipe joint 13. The housing may further 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 relatively small and belongs to the housing or a part of the sensor.

[0069] To facilitate the installation of the pipe sections of the first pressure detection member 20 and the second pressure detection member 30, in some examples, optionally, a first connection interface and a second connection interface may be provided on the first pipe joint 12 of this embodiment. The pipe section of the first pressure detection member 20 is directly installed on the first connection interface, and the pipe section of the second pressure detection member 30 is directly installed on the second connection interface. It should be noted that due to the occlusion of the first pressure detection member 20 and the second pressure detection member 30 in the figure, the first connection interface and the second connection interface are not shown in the drawings of this embodiment.

[0070] In some examples, optionally, the pipe section of the first pressure detection member 20 may be integrally connected to the first pipe joint 12, and the pipe section of the second pressure detection member 30 may 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 may also include the method of integrally forming during processing.

[0071] In addition, the four-way valve assembly 100 of this embodiment further includes a check valve 40. One end of the check valve 40 is directly installed at the air inlet 121 of the first pipe joint 12, and the check valve 40 is also directly integrated on the first pipe joint 12 of the four-way valve. The first pipe joint 12 is not only used for integrally installing the first pressure detection member 20 but also for integrally installing the check valve 40.

[0072] The function of the check valve 40 is to allow the refrigerant to only enter the four-way valve assembly 100 from the compressor and prevent the refrigerant from flowing back from the four-way valve assembly 100 to the compressor.

[0073] The check valve 40 of this embodiment includes a valve tube and a valve core (not shown in the figure) connected inside the valve tube. One end of the valve tube is directly installed at the air inlet 121 of the first pipe joint 12, and the valve tube and the first pipe joint 12 are of an integrally connected structure or an integrally formed structure, thereby realizing the integration of the check valve 40 and the first pipe joint 12.

[0074] A valve seat and a retaining ring (not shown in the figure) may also be provided in the valve tube of the one-way valve 40. When the valve core cooperates with the valve seat, the one-way valve is closed, thereby cutting off the connection between the compressor exhaust port and the first pipe joint 12. When the valve core cooperates with the retaining ring, the one-way valve is opened, and the flow channel on the valve core conducts the connection between the compressor exhaust port 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. Therefore, this embodiment does not make too much description on the specific structural form of the one-way valve.

[0075] 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.

[0076] 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 .

[0077] 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 .

[0078] 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 .

[0079] Embodiment 2

[0080] 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 member 20 to simultaneously collect pressure information in the first pipe joint 12 and the second pipe joint 13 .

[0081] Combined with Figure 3 As shown, a portion of the first pressure detection component 20 of this embodiment is installed on the first pipe joint 12, and the other portion is installed on the second pipe joint 13. The first pressure detection component 20 is configured to be able to simultaneously detect pressure information of the first pipe joint 12 and the second pipe joint 13.

[0082] This first pressure detection member 20 includes a pressure sensing element, a first conductive member 21, and a second conductive member 22. The number of the pressure sensing element can be one, and the circuit of the one pressure sensing element can process and distinguish the pressure signals from the first pipe joint 12 and the second pipe joint 13 respectively. The pressure sensing element is located in the housing, so it is not shown in the figure. Of course, two pressure sensing elements can also be integrated in a sensor housing, one of which is directly connected to the first conductive member 21, and the other is directly connected to the second conductive member 22, 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).

[0083] The pressure sensing element of this embodiment may be located in the sensor housing, one end of the first conductive member 21 is connected and communicated with the housing of the pressure sensing element, and the other end of the first conductive member 21 is connected and communicated with the first pipe joint 12 .

[0084] Similarly, one end of the second conductive member 22 of the present embodiment is connected and communicated with the pressure sensing element, and the other end of the second conductive member 22 is connected and communicated with the second pipe joint 13. The pressure sensing element is configured to detect the pressure information in the first pipe joint 12 through the first conductive member 21, and to detect the pressure information in the second pipe joint 13 through the second conductive member 22.

[0085] The first conductive member 21 and the second conductive member 22 can be rigid or flexible tube structures, which are used as a part of the first pressure detection member 20 to assist the pressure sensing element to collect pressure information of the first pipe joint 12 and the second pipe joint 13 .

[0086] This structure integrates the first pressure detection component 20 and the second pressure detection component 30 in Example 1 to realize pressure detection of the first pipe joint 12 and the second pipe joint 13 only through the first pressure detection component 20, which can further simplify the structure, improve the integration of the four-way valve assembly 100, and reduce the body volume.

[0087] To facilitate the installation of the first conductive member 21 and the second conductive member 22, in some examples, optionally, the first connection interface and the second connection interface in Embodiment 1 can be used to respectively install the first conductive member 21 and the second conductive member 22. Specifically, the end of the first conductive member 21 of this embodiment that is away from the pressure sensing element is directly installed on the first connection interface, and the end of the second conductive member 22 that is away from the pressure sensing element is directly installed on the second connection interface.

[0088] In some examples, optionally, the first conductive member 21 can be integrally connected to the first pipe joint 12, and the second conductive member 22 can also be integrally connected to the second pipe joint 13. The integral connection method may include welding, bonding, hot melt connection, etc., and may also include an integral molding method during processing.

[0089] 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.

[0090] 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.

[0091] Embodiment Three

[0092] Combined with the attached Figures 4 - 9 As shown, the difference from the above-mentioned Embodiment One and Embodiment Two is that 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.

[0093] 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.

[0094] 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.

[0095] As Figure 9As shown, 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 elements 53 are directly installed inside the third pipe joint 14. The second filter elements 53 may also be structures such as filter meshes. 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.

[0096] The above two installation methods and structures of the filter 50 can directly filter the third pipe joint 14, and have a better filtering effect compared to indirectly filtering through an intermediate filter in the related art.

[0097] Embodiment 4

[0098] Combined with the attached Figure 10 As shown (the first pressure detection member 20 and the one-way valve 40 are not shown in the figure), the present embodiment provides a four-way valve assembly 100. The structure of the four-way valve body 10 is the same as or similar to that of the above embodiment, except that the four-way valve assembly 100 of the present embodiment further includes a first pressure switch 60 and / or a second pressure switch 70.

[0099] When including the first pressure switch 60 and the second pressure switch 70, the first pressure switch 60 is directly installed on the first pipe joint 12 and is in communication with the first pipe joint 12. The second pressure switch 70 is directly installed on the second pipe joint 13 and is in communication with the second pipe joint 13. Compared with the method of indirectly installing the first pressure switch 60 and the second pressure switch 70 through an intermediate pipeline, in this embodiment, the first pressure switch 60 and the second pressure switch 70 are directly installed on the first pipe joint 12. When the pressure inside the first pipe joint 12 reaches the threshold value, corresponding control can be performed more accurately and quickly.

[0100] The first pressure switch 60 may be a high-pressure pressure switch, and the second pressure switch 70 may be a low-pressure pressure switch. The "low pressure" and "high pressure" here can be understood in the same way as in Embodiment 1.

[0101] The first pressure switch 60 monitors and controls the high-pressure state of the heating and ventilation equipment to ensure that the system operates within a safe range. The first pressure switch 60 is used to detect the pressure information inside the first pipe joint 12. When the pressure exceeds the preset safety threshold, the first pressure switch 60 will cut off the power supply or send a signal to stop the operation of the compressor. The first pressure switch 60 can prevent the compressor from being damaged due to excessive exhaust pressure and also reduce other possible damages caused by the system, such as refrigerant leakage or other component failures.

[0102] The second pressure switch 70 monitors and controls the low-pressure state of the HVAC equipment to ensure that the system operates within a safe range. The second pressure switch 70 is used to detect the pressure information in the second pipe joint 13. When the pressure is lower than the preset safety threshold, the second pressure switch 70 will cut off the power supply or send a signal to stop the operation of the compressor. The second pressure switch 70 can prevent the compressor from operating abnormally due to the low-pressure state, such as liquid operation or poor refrigeration effect.

[0103] Although the functions of the first pressure switch 60 and the second pressure switch 70 are the same as those of the aforementioned first pressure detection element 20 and second pressure detection element 30, both including detecting the pipeline pressure, the main functions of the first pressure detection element 20 and the second pressure detection element 30 are to monitor the pressure in the system in real time so that the system can be dynamically adjusted to maintain within a safe range. The purpose of setting the first pressure switch 60 and the second pressure switch 70 is to provide a safe redundancy protection mechanism to form a safe emergency mechanism. The combined use of the pressure switch and the pressure detection element can provide more comprehensive pressure management and safety guarantee.

[0104] To facilitate the installation and connection of the first pressure switch 60 and the second pressure switch 70 in this embodiment, a third connection interface and a fourth connection interface (not shown in the figure) can also be provided on the first pipe joint 12 of this embodiment. The first pressure switch 60 is directly installed on the third connection interface, and the second pressure switch 70 is directly installed on the fourth connection interface. The third connection interface and the fourth connection interface have the same or similar structures as the aforementioned first connection interface and second connection interface. For example, both the third connection interface and the fourth connection interface can be an opening structure, or include an opening structure and a small section of connecting pipe located outside the opening structure.

[0105] Embodiment Five

[0106] Combined with the attached Figure 11 As shown in the figure, the difference between the four-way valve assembly 100 in this embodiment and the four-way valve assembly 100 in the aforementioned embodiments is that the four-way valve assembly 100 in this embodiment further includes a first temperature detection element 80 and / or a second temperature detection element 90. Both the first temperature detection element 80 and the second temperature detection element 90 can be structures such as temperature sensors.

[0107] The first temperature detection element 80 is directly installed on the first pipe joint 12 and is used to detect the temperature in the first pipe joint 12; the second temperature detection element 90 is directly installed on the second pipe joint 13 and is used to detect the temperature in the second pipe joint 13.

[0108] The connection method between the first temperature detection element 80 and the first pipe joint 12 can be an integral connection method such as welding or bonding. Similarly, the connection method between the second temperature detection element 90 and the second pipe joint can also be an integral connection method such as welding or bonding.

[0109] The first temperature detector 80 can detect the temperature of the first pipe joint 12 (high-pressure side), and the second temperature detector 90 can detect the temperature of the second pipe joint 13 (high-pressure side), which can ensure the refrigerant flow and heat exchange efficiency, prevent the system from overheating or overcooling, and protect the system components. Moreover, by obtaining comprehensive temperature data, the system can operate in an optimal state and promptly detect and solve potential problems.

[0110] To facilitate the installation and connection of the first temperature detector 80 and the second temperature detector 90 in this embodiment, a fifth connection interface and a sixth connection interface (not shown in the figure) can also be provided on the first pipe joint 12 of this embodiment. The first temperature detector 80 is directly installed on the fifth connection interface, and the second temperature detector 90 is connected and installed on the sixth connection interface. The fifth connection interface and the sixth connection interface have the same or similar structures as the aforementioned third connection interface and fourth connection interface.

[0111] Compared with the method of indirectly installing the first temperature detector 80 and the second temperature detector 90 through an intermediate pipeline, in this embodiment, the first temperature detector 80 and the second temperature detector 90 are directly installed on the first pipe joint 12, which can more accurately and quickly detect the temperatures inside the first pipe joint 12 and the second pipe joint 13.

[0112] Embodiment Six

[0113] Combined with the attached Figure 12 As shown, the four-way valve assembly 100 of this embodiment includes the four-way valve body 10 in the above embodiment, and further includes: the first pressure detector 20 in Embodiment Two, the two-structured filters 50 in Embodiment Three, the first pressure switch 60 and the second pressure switch 70 in Embodiment Four, and the first temperature detector 80 and the second temperature detector 90 in Embodiment Five.

[0114] The first pressure detector 20, the first pressure switch 60, and the first temperature detector 80 are respectively located on different sides of the first pipe joint 12. Similarly, the second pressure switch 70 and the second temperature detector 90 are also located on different sides of the second pipe joint 13, thereby preventing interference between each functional component.

[0115] Embodiment Seven

[0116] Combined with the attached Figure 13 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 the four-way valve assembly 100 according to any one of Embodiments One to Three above; the four-way valve assembly 100 is respectively connected and communicated with the compressor 900 and the heat exchanger.

[0117] 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 the exhaust pipe 200, the second pipe joint 13 may be connected to the suction port of the compressor 900 through the suction pipe 300, the third pipe joint 14 may be connected to the first heat exchanger 600 through the first refrigerant flow path 400, and the fourth pipe joint 15 may be connected to the second heat exchanger 700 of the indoor unit 3000 of the heating and ventilation equipment through the second refrigerant flow path 500.

[0118] The refrigerant in the compressor 900 sequentially enters the main valve pipe 11 through the suction pipe 300 and the second pipe joint 13, then flows into the first refrigerant flow path 400 through the third pipe joint 14, and after being processed by structures such as the expansion valve 410 and the liquid-side stop valve 420 on the first refrigerant flow path 400, it flows into the first heat exchanger 600 and the second heat exchanger 700. The refrigerant in the second heat exchanger 700 enters the fourth pipe joint 15 after being processed by the gas-side stop valve 510 on the second refrigerant flow path 500, then returns to the main valve pipe 11, and subsequently 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.

[0119] Regarding the structures of other parts of the outdoor unit 2000 of the heating and ventilation equipment except the four-way valve assembly 100, please refer to the related technologies, and details will not be elaborated in this application.

[0120] Embodiment VIII

[0121] Combined with the attached Figure 13 As shown, this embodiment provides a heating and ventilation equipment, including the outdoor unit 2000 of the heating and ventilation equipment shown in Embodiment IV. In some embodiments, the heating and ventilation equipment further includes an indoor unit 3000 of the heating and ventilation equipment, and the indoor unit 3000 of the heating and ventilation equipment and the outdoor unit 2000 of the heating and ventilation equipment are connected through pipelines.

[0122] Since the refrigerant cycle has been introduced in Embodiment IV, details will not be elaborated in this embodiment. In addition, regarding other structures of the indoor unit 3000 of the heating and ventilation equipment, reference can be made to the related technologies, and this embodiment will not describe them in detail either.

[0123] 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 four-way 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; as well as The first pressure detection component is installed on the first pipe joint and is connected to the first pipe joint. The first pressure detection component 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 pressure detection component, which is installed on the second pipe joint and connected to the second pipe joint. The second pressure detection component is used to detect pressure information in the second pipe joint.

3. The four-way valve assembly according to claim 2, characterized in that: The first pipe joint is provided with a first connection interface, the first pressure detection component is at least partially installed on the first connection interface, and is connected to the first pipe joint through the first connection interface; And / or, the second pipe joint is provided with a second connection interface, the second pressure detecting component is at least partially installed on the second connection interface, and is connected to the second pipe joint through the second connection interface.

4. The four-way valve assembly according to claim 1, characterized in that: The first pressure detection component is also connected to and communicated with the second pipe joint, and the first pressure detection component 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 detecting member includes a pressure sensing element, a first conductive member, and a second conductive member; one end of the first conductive member is connected and communicated with the pressure sensing element, and the other end of the first conductive member is directly connected and communicated with the first pipe joint, one end of the second conductive member is connected and communicated with the pressure sensing element, and the other end of the second conductive member is directly connected and communicated with the second pipe joint, and the pressure sensing element 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 pipe joint is provided with a first connection interface, the first conducting member is installed on the first connection interface and is connected with the first pipe joint through the first connection interface; And / or, the second pipe joint is provided with a second connection interface, and the second conducting member is installed on the second connection interface and is connected with the second pipe joint through the second connection interface.

7. The four-way valve assembly according to claim 5, characterized in that: The second conducting member is provided with a bending portion facing the main valve pipe, the first pipe joint and the second pipe joint, and the bending portion, the main valve pipe, the first pipe joint and the second pipe joint form an installation space.

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 one side of the four-way valve body and partially located in the installation space.

9. The four-way valve assembly according to claim 8, characterized in that: The four-way valve assembly also includes a mounting member, the mounting member is provided with a connection interface for the first pipe joint to pass through, the mounting member is sleeved on the first pipe joint through the connection interface, and the pilot valve is connected to the mounting member.

10. The four-way valve assembly according to claim 9, characterized in that: The surface of the mounting member facing the main valve tube is an arc surface, and the arc surface fits with the outer wall surface of the main valve tube.

11. The four-way valve assembly according to claim 10, characterized in that: The mounting piece is fixedly connected to the outer wall of the main valve pipe via a connecting piece.

12. The four-way valve assembly according to claim 1, characterized in that: The four-way valve assembly further includes a one-way valve, which is installed on the first pipe joint and communicated with the first pipe joint.

13. The four-way valve assembly according to claim 12, characterized in that: The one-way valve includes a valve tube and a valve core connected to the valve tube. One end of the valve tube is installed on the first pipe joint. The valve tube and the first pipe joint are an integrally connected structure or an integrally formed structure.

14. The four-way valve assembly according to claim 1, 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.

15. The four-way valve assembly according to claim 14, 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 at the air outlet, and is connected to the third pipe joint through the air outlet.

16. The four-way valve assembly according to claim 14, characterized in that: The filter comprises a second filter element, and the second filter element is installed in the third pipe joint.

17. The four-way valve assembly according to any one of claims 1 to 16, characterized in that: The four-way valve assembly further includes a first pressure switch, which is mounted on the first pipe joint and is in communication with the first pipe joint; And / or, the four-way valve assembly further includes a second pressure switch, and the second pressure switch is installed on the second pipe joint and is connected to the second pipe joint.

18. The four-way valve assembly according to claim 17, characterized in that: The first pipe joint is provided with a third connection interface, the first pressure switch is installed on the third connection interface, and is connected with the first pipe joint through the third connection interface; And / or, the first pipe joint is provided with a fourth connection interface, the second pressure switch is installed on the fourth connection interface, and is connected with the first pipe joint through the fourth connection interface.

19. The four-way valve assembly according to any one of claims 1 to 16, characterized in that: The four-way valve assembly further includes a first temperature detection member, which is installed on the first pipe joint and is used to detect the temperature inside the first pipe joint; And / or, the four-way valve assembly further includes a second temperature detecting member, which is installed on the second pipe joint and is used to detect the temperature inside the second pipe joint.

20. The four-way valve assembly according to claim 19, characterized in that: The first pipe joint is provided with a fifth connection interface, the first temperature detection component is installed on the fifth connection interface, and is connected with the first pipe joint through the fifth connection interface; And / or, the first pipe joint is provided with a sixth connection interface, the second temperature detection component is installed on the sixth connection interface, and is connected to the first pipe joint through the sixth connection interface.

21. 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 20; 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 port of the compressor.

22. A HVAC equipment, characterized in that: It comprises a HVAC equipment indoor unit and a HVAC equipment outdoor unit as claimed in claim 21, wherein the HVAC equipment indoor unit and the HVAC equipment outdoor unit are connected via a pipeline.

Images