Valve terminal assembly and air conditioning system

Abstract

The invention discloses a valve terminal assembly and an air conditioning system.The valve terminal assembly comprises a valve terminal body, a valve body and a plate heat exchanger, a plurality of first connectors are formed in the surface of one side of the valve terminal body in the thickness direction, and a plurality of second connectors are formed in the surface of the other side of the valve terminal body in the thickness direction; a communication flow channel is formed in the valve terminal body so that the at least two first connectors can be communicated, the at least two second connectors can be communicated or one first connector can be communicated with one second connector, the valve body is arranged on the surface of one side of the valve terminal body, the valve body is communicated with the corresponding first connector, and the valve body is arranged on the surface of the other side of the valve terminal body. The plate heat exchanger is arranged on the surface of the other side of the valve terminal body and provided with a plurality of plate heat exchanger connectors, and at least one plate heat exchanger connector corresponds to and communicates with at least one second connector, so that the integration level of the air conditioning system can be improved, and the space occupation of the air conditioning system can be reduced.

Description

Technical Field

[0001] This application relates to the field of air conditioners, and particularly to a valve island assembly and an air conditioning system. Background Art

[0002] In the related art, the components in an air conditioning system are mainly connected by pipes. As the carrier of the refrigerant, most of the conventional pipes are made of copper pipes, and a small part is made of steel pipes to connect each component. When using the pipe design, the clearance requirements between the pipelines need to be considered. Therefore, the space occupied by the pipes in the system box is relatively large. Therefore, how to improve the integration of the air conditioning system and reduce the space occupied by the air conditioning system has become the technical problem to be solved in this application. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of this application is to provide a valve island assembly, which can improve the integration of the air conditioning system and reduce the space occupied by the air conditioning system.

[0004] This application also provides an air conditioning system with a valve island assembly.

[0005] The valve island assembly according to an embodiment of this application includes: a valve island body, on one surface of the valve island body in the thickness direction, a plurality of first interfaces are formed, on the other surface of the valve island body in the thickness direction, a plurality of second interfaces are formed, and a communication flow channel is formed in the valve island body to connect at least two of the first interfaces, at least two of the second interfaces, or one of the first interfaces and one of the second interfaces; a valve body, the valve body is arranged on one surface of the valve island body, and the valve body is communicated with the corresponding first interface; a plate heat exchanger, the plate heat exchanger is arranged on the other surface of the valve island body, the plate heat exchanger has a plurality of plate heat exchanger interfaces, and at least one of the plate heat exchanger interfaces corresponds to and is communicated with at least one of the second interfaces.

[0006] According to the valve island assembly of the embodiment of this application, the valve island assembly integrates the valve body and the plate heat exchanger through the double-sided interfaces of the valve island body, avoiding being independently dispersed in the air conditioning system. The valve island body with an internal communication flow channel integrates the valve body and the plate heat exchanger into a whole, reducing the redundant connecting pipes and installation gaps between each component, avoiding space waste, making the structure of the air conditioning system more compact, and making the function management and maintenance more convenient. Thus, the integration of the air conditioning system is effectively improved, and the space occupied by the air conditioning system is reduced.

[0007] According to some embodiments of this application, a high-pressure interface and a low-pressure interface are formed on the valve island body, and the high-pressure interface and the low-pressure interface are respectively adapted to be connected to an indoor heat exchanger; wherein the high-pressure interface is communicated with the first interface, and the low-pressure interface is communicated with the second interface.

[0008] A valve island assembly according to some embodiments of the present application, the valve body includes: a four-way valve, the four-way valve is disposed on one side surface of the valve island body and has a main interface, an E interface, an S interface and a C interface that can be selectively communicated with each other, the main interface is adapted to connect to the air outlet of the compressor, and the E interface, the S interface and the C interface are respectively communicated with the corresponding first interfaces; wherein the E interface is communicated to the high-pressure interface through the corresponding first interface, and the corresponding first interface is the first four-way valve interface; the S interface is communicated to the corresponding second interface through the corresponding first interface, the second interface is adapted to connect to the air return port of the compressor, and the corresponding first interface is the second four-way valve interface; the C interface is connected to the outdoor heat exchanger through the corresponding first interface, and the corresponding first interface is the third four-way valve interface.

[0009] A valve island assembly according to some embodiments of the present application, the first four-way valve interface, the second four-way valve interface and the third four-way valve interface extend in the same straight line.

[0010] A valve island assembly according to some embodiments of the present application, a first edge extending in the width direction is formed on the valve island body, and the high-pressure interface and the low-pressure interface are respectively located on the first edge.

[0011] A valve island assembly according to some embodiments of the present application, the opening directions of the high-pressure interface and the low-pressure interface are the same.

[0012] A valve island assembly according to some embodiments of the present application, the positions of the first four-way valve interface, the second four-way valve interface and the third four-way valve interface projected on the first edge do not exceed the high-pressure interface on one side in the width direction and / or do not exceed the low-pressure interface on the other side in the width direction.

[0013] A valve island assembly according to some embodiments of the present application, the four-way valve includes: an E connection pipe, the E connection pipe extends in a direction perpendicular to the valve island, and the E connection pipe communicates the E interface with the first four-way valve interface; an S connection pipe, the S connection pipe extends in a direction perpendicular to the valve island, and the S connection pipe communicates the S interface with the second four-way valve interface; a C connection pipe, the C connection pipe extends in a direction perpendicular to the valve island, and the C connection pipe communicates the C interface with the third four-way valve interface; the E connection pipe, the S connection pipe and the C connection pipe are all located between the high-pressure interface and the low-pressure interface.

[0014] A valve island assembly according to some embodiments of the present application, a first inlet of a plate heat exchanger is provided on the plate heat exchanger, one of the second interfaces is configured as a first interface of the plate heat exchanger, the first interface of the plate heat exchanger is communicated with the first inlet of the plate heat exchanger, and within the valve island body, the first interface of the plate heat exchanger is communicated with the high-pressure interface.

[0015] A valve island assembly according to some embodiments of the present application, the high-pressure interface is higher than one side surface of the valve island body.

[0016] A valve island assembly according to some embodiments of the present application, a first outlet of the plate heat exchanger is provided on the plate heat exchanger, the first outlet of the plate heat exchanger is communicated with the first inlet of the plate heat exchanger; one of the second interfaces is configured as a second interface of the plate heat exchanger, and the second interface of the plate heat exchanger is communicated with the first outlet of the plate heat exchanger.

[0017] A valve island assembly according to some embodiments of the present application, at least two of the plurality of first interfaces are configured as shunt ports, and the plurality of shunt ports are respectively communicated with the second interface of the plate heat exchanger.

[0018] A valve island assembly according to some embodiments of the present application, two of the first interfaces are respectively configured as a first shunt port and a second shunt port and are communicated with the second interface of the plate heat exchanger; wherein the first shunt port is adapted to be communicated with a refrigerant radiator, and the second shunt port is adapted to be communicated with an expansion valve.

[0019] A valve island assembly according to some embodiments of the present application, the plate heat exchanger is provided with a second inlet of the plate heat exchanger; the valve island assembly further includes: a first expansion valve, the first expansion valve has a first interface of the expansion valve and a second interface of the expansion valve, the first interface of the expansion valve is communicated with the second shunt port, and the second interface of the expansion valve is communicated with the second inlet of the plate heat exchanger.

[0020] A valve island assembly according to some embodiments of the present application, the valve island assembly further includes: a first solenoid valve, the first solenoid valve can be selectively turned on or off and is located on the upstream side or the downstream side of the first expansion valve.

[0021] A valve island assembly according to some embodiments of the present application, two of the first interfaces in the valve island body are communicated with each other and are respectively configured as a first solenoid valve interface and an inlet of the first expansion valve; the first solenoid valve has a first end of the first solenoid valve and a second end of the first solenoid valve that can be selectively turned on, the first end of the first solenoid valve is communicated with the second shunt port, the second end of the first solenoid valve is communicated with the first solenoid valve interface; the first interface of the expansion valve of the first expansion valve is communicated with the inlet of the first expansion valve.

[0022] According to some embodiments of the present application, one of the first interfaces is configured as a first expansion valve outlet, and the first expansion valve outlet communicates with the second expansion valve interface of the first expansion valve; one of the second interfaces is configured as a third plate heat exchanger interface, and the third plate heat exchanger interface communicates with the first expansion valve outlet and is also in communication with the second inlet of the plate heat exchanger.

[0023] According to some embodiments of the present application, the plate heat exchanger is provided with a second outlet of the plate heat exchanger that communicates with the second inlet of the plate heat exchanger; one of the second interfaces is configured as a fourth plate heat exchanger interface, and the fourth plate heat exchanger interface is adapted to communicate with the second outlet of the plate heat exchanger.

[0024] According to some embodiments of the present application, one of the second interfaces is configured as an enthalpy-increasing outlet for connecting to a compressor, and the enthalpy-increasing outlet communicates with the fourth plate heat exchanger interface inside the valve island body and is adapted to communicate with the gas supplement port of the compressor.

[0025] According to some embodiments of the present application, the valve island assembly further includes: a second expansion valve, which has a first interface of the second expansion valve and a second interface of the second expansion valve. The first interface of the second expansion valve and the second interface of the second expansion valve are respectively connected to the valve island body through two first interfaces, and the second expansion valve is adapted to connect the refrigerant radiator to the outdoor heat exchanger.

[0026] According to some embodiments of the present application, one of the first interfaces is configured as a refrigerant radiator inlet, and the refrigerant radiator inlet is adapted to be connected to a refrigerant radiator; one of the first interfaces is configured as an inlet of the second expansion valve, and the inlet of the second expansion valve communicates with the first interface of the second expansion valve and is also in communication with the refrigerant radiator inlet inside the valve island.

[0027] According to some embodiments of the present application, one of the first interfaces is configured as an outlet of the second expansion valve, and the outlet of the second expansion valve communicates with the second interface of the second expansion valve; one of the first interfaces is configured as an outdoor heat exchanger interface, and the outdoor heat exchanger interface is adapted to communicate with an outdoor heat exchanger and is also in communication with the outlet of the second expansion valve inside the valve island.

[0028] According to some embodiments of the present application, the valve island assembly further includes: a filter, which is disposed between the outdoor heat exchanger interface and the outdoor heat exchanger.

[0029] According to some embodiments of the present application, the outdoor heat exchanger is configured as a finned tube heat exchanger and is disposed downstream of the filter.

[0030] A valve island assembly according to some embodiments of the present application, a condenser inlet adapted to be connected to the outdoor heat exchanger is provided on the valve island body, and the condenser inlet communicates with the third interface of the four-way valve inside the valve island to connect the outdoor heat exchanger with the C interface.

[0031] The valve island assembly according to some embodiments of the present application further includes: a gas-liquid separator, the gas-liquid separator is disposed on the other side of the valve island body, one of the second interfaces is configured as a first gas-liquid separator interface, and the first gas-liquid separator interface communicates with the second interface of the four-way valve inside the valve island, and the gas-liquid separator connects the C interface with the compressor suction port.

[0032] In the valve island assembly according to some embodiments of the present application, one of the second interfaces is configured as a second gas-liquid separator interface, and the second gas-liquid separator interface is adapted to communicate with the gas-liquid separator; one of the second interfaces is configured as a compressor suction interface, and the compressor suction interface communicates with the second gas-liquid separator interface inside the valve island and is adapted to communicate with the suction port of the compressor.

[0033] In the valve island assembly according to some embodiments of the present application, the second interface of the four-way valve in the valve island body is disposed opposite to the first gas-liquid separator interface in terms of thickness.

[0034] The air-conditioning system according to the embodiments of the present application will be briefly described below.

[0035] The air conditioning system according to an embodiment of the present application includes the valve island assembly of any of the above embodiments. Since the valve island assembly of any of the above embodiments is provided on the air conditioning system according to this embodiment, therefore, the valve body of the air conditioning system according to the present application is directly installed on one side of the valve island body and is docked with the plate heat exchanger interface on the other side through the internal communication flow channel, enabling the valve body that controls the fluid control to be linked with the plate heat exchanger that controls the heat exchange, without relying on external pipeline transfer, reducing the number of independent components and the interface complexity within the system, and improving the integration degree; the space occupation of the air conditioning system of the present application is optimized. In the prior art, the valves and heat exchangers are dispersed, and a straight-line distance and detour space required for pipeline installation need to be reserved. After integration, by directly fitting both sides of the valve island body, the fluid path is shortened to be directly connected through the built-in flow channel within the valve island body, eliminating the space occupied by the pipeline and making the overall planar layout of the module more compact; the leakage risk of the air conditioning system according to the present application is reduced. In the prior art, through pipeline connection, there are multiple detachable interfaces, which are prone to fluid leakage due to vibration or aging. However, the valve island assembly is integrally formed through the internal flow channel and directly fixedly connected through the interface, reducing the number of exposed interfaces and potential leakage hazards. Further, due to the reduction of interfaces, the maintenance convenience is enhanced. The integrated valve island assembly can be individually detected and can be quickly replaced as a whole during maintenance, avoiding the cumbersome processes in traditional maintenance, shortening the maintenance time and reducing the operation complexity.

[0036] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0038] Figure 1 is an axonometric structural schematic diagram of the valve island assembly according to an embodiment of the present application;

[0039] Figure 2 is a side view structural schematic diagram of the valve island assembly according to an embodiment of the present application;

[0040] Figure 3 is a top view structural schematic diagram of the valve island assembly according to an embodiment of the present application;

[0041] Figure 4 is a first interface structural schematic diagram of one side of the valve island body of the valve island assembly according to an embodiment of the present application;

[0042] Figure 5 is a second interface structural schematic diagram of the other side of the valve island body of the valve island assembly according to an embodiment of the present application;

[0043] Figure 6It is a schematic side view structure of the valve island body of the valve island assembly according to an embodiment of the present application;

[0044] Figure 7 It is a schematic principle structure of the valve island assembly according to an embodiment of the present application.

[0045] Reference numerals:

[0046] 100, valve island assembly;

[0047] 1, valve island body;

[0048] 11, first interface;

[0049] 101, high-pressure interface; 102, low-pressure interface; 103, first interface of four-way valve; 104, second interface of four-way valve; 105, third interface of four-way valve; 106, first shunt port; 107, second shunt port; 108, first solenoid valve interface; 109, inlet of first expansion valve; 1010, outlet of first expansion valve; 1011, inlet of refrigerant radiator; 1012, inlet of second expansion valve; 1013, outlet of second expansion valve; 1014, outdoor side heat exchanger interface;

[0050] 12, second interface;

[0051] 201, first interface of plate heat exchanger; 202, second interface of plate heat exchanger; 203, third interface of plate heat exchanger; 204, fourth interface of plate heat exchanger; 205, enthalpy-increasing outlet; 206, first interface of gas-liquid separator; 207, second interface of gas-liquid separator; 208, compressor suction gas interface;

[0052] 13, condenser inlet;

[0053] 2, valve body;

[0054] 21, four-way valve;

[0055] 211, main interface; 212, E interface; 213, S interface; 214, C interface;

[0056] 215, E connecting pipe; 216, S connecting pipe; 217, C connecting pipe;

[0057] 22, first expansion valve;

[0058] 23, first solenoid valve;

[0059] 24, second expansion valve;

[0060] 25, stop valve;

[0061] 3, plate heat exchanger;

[0062] 31. First inlet of the plate heat exchanger; 32. First outlet of the plate heat exchanger; 33. Second inlet of the plate heat exchanger; 34. Second outlet of the plate heat exchanger;

[0063] 4. Filter;

[0064] 5. Outdoor heat exchanger;

[0065] 6. Gas-liquid separator;

[0066] 7. Capillary tube;

[0067] 8. Refrigerant radiator;

[0068] 9. Compressor; 91. Gas supplement port; 92. Return air port; 93. Air outlet. Detailed implementation mode

[0069] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0070] Next, refer to Figures 1-7 Describe the valve island assembly 100 according to an embodiment of the present application.

[0071] The valve island assembly 100 according to an embodiment of the present application includes a valve island body 1, a valve body 2, and a plate heat exchanger 3. A plurality of first interfaces 11 are formed on one surface of the valve island body 1 in the thickness direction, and a plurality of second interfaces 12 are formed on the other surface of the valve island body 1 in the thickness direction. A communication flow path is formed in the valve island body 1 to connect at least two first interfaces 11, at least two second interfaces 12, or one first interface 11 and one second interface 12. The valve body 2 is disposed on one surface of the valve island body 1, and the valve body 2 communicates with the corresponding first interface 11. The plate heat exchanger 3 is disposed on the other surface of the valve island body 1. The plate heat exchanger 3 has a plurality of plate heat exchanger 3 interfaces, and at least one plate heat exchanger 3 interface corresponds to and communicates with at least one second interface 12.

[0072] In the related art, the air conditioning system mainly uses pipes to connect components. As the carrier of the refrigerant, most of the conventional pipes are made of copper pipes, and a small part uses steel pipes to connect the components. When using the pipe design, the gap requirements between the pipes need to be considered. Therefore, the space occupied by the pipes in the system box is relatively large.

[0073] It can be understood that the connected flow channels formed inside the valve island body 1 are the basic channels for the entire assembly to achieve fluid transmission. A plurality of first interfaces 11 and second interfaces 12 are respectively arranged on both surface sides in the thickness direction of the valve island body 1. The plurality of first interfaces 11 and second interfaces 12 provide connection points for the connection between the valve island assembly 100 and external devices, enabling the integration of the existing scattered connection methods and improving the integration degree of the air-conditioning system. The valve body 2 is arranged on one surface side of the valve island body 1 and is configured in multiple numbers. Each valve body ② is communicated with the corresponding first interface 11. The multiple valve bodies 2 are integrated on the valve island body 1, concentrating the functions of multiple valves that may originally be scattered at different positions in the air-conditioning system. Valves with different functions may require independent installation spaces and complex pipeline connections. Through the valve island assembly 100, these valves are integrated on one side of the valve island body 1, reducing the redundant connection pipelines and installation gaps between the individual valves, making the fluid control part of the air-conditioning system more compact, avoiding the space waste caused by the scattered layout of the valves, thereby reducing the space occupied by the system in the fluid control part. At the same time, the centralized arrangement of the multiple valve bodies 2 also makes the management and maintenance of the air-conditioning system more convenient, improving the integration degree of the system as a whole.

[0074] Furthermore, the plate heat exchanger 3 is arranged on the other surface side of the valve island body 1 and has a plurality of plate heat exchanger 3 interfaces. At least one plate heat exchanger 3 interface corresponds to and is communicated with at least one second interface 12. The plate heat exchanger 3, as a component for realizing heat exchange in the air-conditioning system, is connected to the valve island body 1, further enhancing the integration of the system. In the existing air-conditioning system, the connection between the plate heat exchanger 3 and other components requires long pipelines and complex installation steps, occupying more space. However, in the valve island assembly 100 of the embodiment of the present application, the plate heat exchanger 3 is directly connected to the valve island body 1, and fluid transmission and heat exchange are realized through the corresponding interfaces, reducing the additional connection components and pipeline lengths, making the structure of the entire system more compact, reducing unnecessary space consumption. At the same time, the integration of the plate heat exchanger 3 and the valve island body 1 makes the heat exchange process and the fluid control process closer in space, and the information transfer and energy exchange are more efficient, further improving the integration degree of the air-conditioning system.

[0075] It should be noted that the connected flow channels in the valve island body 1 can communicate at least two first interfaces 11, or can also communicate at least two first interfaces 11, or can communicate one first interface 11 with one second interface 12.

[0076] In short, through the dual-side interface design of the valve island body 1 of the valve island assembly 100, the valve body 2 and the plate heat exchanger 3 are integrated, avoiding the space waste of the fluid control and heat exchange parts that are scattered in the air conditioning system, independent of each other and need to be connected. They are integrated into an overall entity, reducing the redundant connecting pipes and installation gaps between various components, avoiding space waste, making the structure of the air conditioning system more compact, and the function management and maintenance more convenient. Thus, the integration degree of the air conditioning system is effectively improved, and the space occupation of the air conditioning system is reduced.

[0077] For the valve island assembly 100 according to some embodiments of the present application, a high-pressure interface 101 and a low-pressure interface 102 are formed on the valve island body 1. The high-pressure interface 101 and the low-pressure interface 102 are respectively adapted to connect to the indoor heat exchanger; wherein the high-pressure interface 101 is communicated with the first interface 11, and the low-pressure interface 102 is communicated with the second interface 12.

[0078] By integrating the high-pressure and low-pressure interfaces 102 on the valve island body 1 and directly communicating with the first and second interfaces, the originally scattered transmission paths are integrated inside the valve island assembly 100, further strengthening the integration function of the valve island assembly 100. The indoor heat exchanger only needs to be docked with the high-pressure and low-pressure interfaces 102 of the valve island body 1 to achieve communication with components such as the valve body 2 and the plate heat exchanger 3, greatly simplifying the pipeline layout of the air conditioning system.

[0079] It should be noted that the connection form between the high-pressure interface 101 and the low-pressure interface 102 can be through the internal communication flow path of the valve island body 1, or a bent pipe can be separately provided to communicate with the valve island body 1.

[0080] In some embodiments of the present application, stop valves 25 are respectively connected to the high-pressure interface 101 and the low-pressure interface 102 to control the opening and closing of the air conditioning system.

[0081] For the valve island assembly 100 according to some embodiments of the present application, the valve body 2 includes a four-way valve 21. The four-way valve 21 is arranged on one side surface of the valve island body 1 and has a main interface 211, an E interface 212, an S interface 213, and a C interface 214 that can be selectively communicated with each other. The main interface 211 is adapted to connect to the air outlet 93 of the compressor 9. The E interface 212, the S interface 213, and the C interface 214 are respectively communicated with the corresponding first interface 11; wherein the E interface 212 is communicated to the high-pressure interface 101 through the corresponding first interface 11, and the corresponding first interface 11 is the first four-way valve interface 103; the S interface 213 is communicated to the corresponding second interface 12 through the corresponding first interface 11. The second interface 12 is adapted to connect to the suction port 92 of the compressor 9, and the corresponding first interface 11 is the second four-way valve interface 104; the C interface 214 is connected to the outdoor heat exchanger through the corresponding first interface 11, and the corresponding first interface 11 is the third four-way valve interface 105.

[0082] The connection of the four-way valve 21 to each interface of the valve island body 1 further strengthens the integration advantage of the valve island assembly 100. The valve island assembly 100 directly integrates the four-way valve 21 on one side surface of the valve island body 1, and can be selectively connected to the high-pressure interface 101, the suction port 92 of the compressor 9, and the outdoor heat exchanger through the first interface 11. The compressor 9, the indoor and outdoor heat exchangers that originally needed to be connected through multiple pipes and multiple valves are now connected through the interfaces of the four-way valve 21 and the valve island body 1 to form a coordinated whole, reducing the number and length of external connecting pipes, effectively reducing the complexity of the system, significantly improving the integration degree of the air-conditioning system, and making the system structure more compact and concise.

[0083] The presence of the four-way valve 21 provides convenience for the air-conditioning system to switch between the cooling and heating modes. When the air conditioner is in the cooling mode, the high-temperature and high-pressure refrigerant discharged from the compressor 9 flows into the main interface 211 of the four-way valve 21. At this time, the four-way valve 21 switches the internal valve core to connect the main interface 211 with the C interface 214. The high-pressure refrigerant is transmitted to the outdoor heat exchanger through the third interface 105 of the four-way valve and the communication flow path of the valve island body 1. After releasing heat in the outdoor heat exchanger, it becomes a medium-temperature and high-pressure liquid, and then enters the indoor heat exchanger to absorb heat after pressure reduction to achieve cooling. In the heating mode, the four-way valve 21 switches the position of the valve core to connect the main interface 211 with the E interface 212. The high-temperature and high-pressure refrigerant directly flows to the indoor heat exchanger through the first interface 103 of the four-way valve and the high-pressure interface 101 of the valve island body 1. After releasing heat indoors, it becomes a low-temperature and low-pressure gas, and then returns to the suction port 92 of the compressor 9 through the second interface 104 of the four-way valve and the corresponding second interface 12 to complete the heating cycle. Without additional complex valve combinations and pipe switching structures, through the switching of the four-way valve 21, the conversion between the cooling and heating modes of the air-conditioning system is realized, greatly improving the flexibility and convenience of the system operation.

[0084] For the valve island assembly 100 according to some embodiments of the present application, the first interface 103, the second interface 104, and the third interface 105 of the four-way valve extend in the same straight line.

[0085] It can be understood that the interior of the valve island body 1 needs to be reasonably planned with connected flow channels to achieve the connection of various components. The linear arrangement of the interfaces of the four-way valve 21 makes the layout of the corresponding flow channels in the valve island body 1 more regular. Compared with the case where the interfaces are dispersedly arranged, the linear arrangement allows the flow channels to extend or branch in a single direction within the valve island body 1, reducing the crossing and overlapping of the flow channels in three-dimensional space. This not only saves the internal space of the valve island body 1 but also makes the overall structure of the valve island assembly 100 more compact. At the same time, the compact internal structure further strengthens the integration characteristics of the valve island assembly 100 because it can integrate more functional components in a smaller space, reducing the space occupied by the entire air-conditioning system due to the loose layout of components. It is particularly suitable for scenarios with high space requirements such as vehicle-mounted air conditioners and household small central air conditioners, effectively improving the integration degree and space utilization rate of the air-conditioning system.

[0086] It should be noted that extending on the same straight line includes all situations of extending in two opposite directions along a straight line, and the direction of this straight line can be arbitrary, specifically including but not limited to, horizontal direction, inclined direction, and vertical direction.

[0087] For the valve island assembly 100 according to some embodiments of the present application, a first edge extending in the width direction is formed on the valve island body 1, and the high-pressure interface 101 and the low-pressure interface 102 are respectively located on the first edge.

[0088] The high-pressure interface 101 and the low-pressure interface 102 are respectively located on the first edge, which allows the internal flow channels to extend along the edge direction, making use of the side space of the valve island body 1 to save the internal space of the valve island body 1. At the same time, the external pipeline connection is also more compact due to the centralized interfaces, avoiding the messy distribution of pipelines around the valve island body 1 caused by the dispersed interfaces and occupying more space. Now, the high-pressure interface 101 and the low-pressure interface 102 are respectively located on the first edge, significantly reducing the external space occupied by the pipelines, enabling the valve island assembly 100 to integrate more functional components in a smaller volume, and enhancing the integration degree of the air-conditioning system

[0089] For the valve island assembly 100 according to some embodiments of the present application, the opening directions of the high-pressure interface 101 and the low-pressure interface 102 are the same.

[0090] It can be understood that since the opening directions of the high-pressure interface 101 and the low-pressure interface 102 are the same, the pipeline connecting the two can be arranged in a straight line, effectively reducing the number of bends of the pipeline. This not only reduces the resistance of the refrigerant during the flow process but also reduces the potential failure points caused by frequent bending of the pipeline, thus significantly improving the circulation efficiency of the refrigerant in the air-conditioning system.

[0091] For the valve island assembly 100 according to some embodiments of the present application, the positions of the first interface 103, the second interface 104, and the third interface 105 of the four-way valve projected onto the first edge do not extend beyond the high-pressure interface 101 on one side in the width direction and / or do not extend beyond the low-pressure interface 102 on the other side in the width direction.

[0092] The projections of the first interface 103, the second interface 104, and the third interface 105 of the four-way valve are limited between the high-pressure interface 101 and the low-pressure interface 102 in the width direction, that is, one side does not extend beyond the boundary of the high-pressure interface 101, and the other side does not extend beyond the boundary of the low-pressure interface 102, directly restricting the size of the valve island body 1 in the width direction.

[0093] In some embodiments of the present application, the valve island assembly 100 may not include a plate heat exchanger 3. The valve island assembly 100 is composed of a valve island body 1 and a four-way valve 21. The projections of the first interface 103, the second interface 104, and the third interface 105 of the four-way valve in the valve island body 1 are limited between the high-pressure interface 101 and the low-pressure interface 102 in the width direction, that is, one side does not extend beyond the boundary of the high-pressure interface 101, and the other side does not extend beyond the boundary of the low-pressure interface 102, directly restricting the size of the valve island body 1 in the width direction and ensuring the size of the plate heat exchanger.

[0094] In the solution where the plate heat exchanger 3 is not provided in the valve island assembly 100, the plate heat exchanger 3 can be connected to the corresponding circuit in other forms.

[0095] In the embodiments where the valve island assembly 100 does not include a plate heat exchanger 3, the projections of the first interface 103, the second interface 104, and the third interface 105 on the first edge are the first projection, the second projection, and the third projection respectively. Among them, at least one of the first projection, the second projection, or the third projection is located between the axes of the high-pressure interface 101 and the low-pressure interface 102 parallel to the horizontal plane.

[0096] It can be understood that the first interface 103, the second interface 104, and the third interface 105 of the four-way valve are located between the high-pressure interface 101 and the low-pressure interface 102 to reduce the volume of the valve body 1 and improve the structural compactness of the valve island assembly 100.

[0097] According to the valve island assembly 100 of some embodiments of the present application, the four-way valve 21 includes: an E-tube 215, an S-tube 216 and a C-tube 217, the E-tube 215 extends in a direction perpendicular to the valve island, and the E-tube 215 connects the E interface 212 with the first interface 103 of the four-way valve, the S-tube 216 extends in a direction perpendicular to the valve island, and the S-tube 216 connects the S interface 213 with the second interface 104 of the four-way valve, the C-tube 217 extends in a direction perpendicular to the valve island, and the C-tube 217 connects the C interface 214 with the third interface 105 of the four-way valve; the E-tube 215, the S-tube 216 and the C-tube 217 are all located between the high-pressure interface 101 and the low-pressure interface 102.

[0098] During the operation of the air-conditioning system, the refrigerant needs to be efficiently transmitted between the various interfaces of the four-way valve 21 and other components of the valve island body 1. The high-temperature and high-pressure refrigerant is transmitted from the E interface 212 of the four-way valve 21 through the E pipe 215 to the first interface 103 of the four-way valve. When it is then connected to the high-pressure interface 101, the vertically extended E pipe 215 allows the refrigerant to flow rapidly in a nearly straight path without the need for complex steering or angle adjustments. This vertical connection method reduces the resistance and eddy currents of the refrigerant during the flow process, avoiding energy loss caused by tortuous paths. Similarly, the vertical extension design of the S pipe 216 and the C pipe 217, the E pipe 215, S pipe 216 and C pipe 217 extend perpendicular to the direction of the valve island. When the pipe is extended vertically, the connection between the pipe and the internal flow channel of the valve island body 1 is more direct and smooth, making the transmission of the refrigerant between the corresponding interfaces more efficient, ensuring the smoothness of the entire refrigerant circulation system, and thus improving the energy efficiency performance of the air-conditioning system.

[0099] The E-connector 215, S-connector 216, and C-connector 217 are all arranged between the high-pressure interface 101 and the low-pressure interface 102, effectively integrating the spatial layout of the valve island assembly 100 and effectively controlling the width dimension of the valve island assembly 100. From the outside, the pipes connecting the various interfaces of the four-way valve 21 can be arranged in an orderly manner in the area between the high-pressure and low-pressure interfaces 102, avoiding the waste of space caused by the extension of the pipes in other directions. The pipes that originally required space to be reserved on both sides of the valve island body 1 to connect the four-way valve 21 now only need to be arranged within the range between the high-pressure and low-pressure interfaces 102. The compact space design reduces the volume of the valve island assembly 100 itself and makes the structure of the entire air conditioning system more compact, effectively improving the system's integration and space utilization.

[0100] According to some embodiments of the present application, for the valve island assembly 100, a first inlet 31 of the plate heat exchanger 3 is provided on the plate heat exchanger 3, and one of the second interfaces 12 is configured as a first interface 201 of the plate heat exchanger. The first interface 201 of the plate heat exchanger is communicated with the first inlet 31 of the plate heat exchanger. Inside the valve island body 1, the first interface 201 of the plate heat exchanger is communicated with the high-pressure interface 101.

[0101] The first interface 201 of the plate heat exchanger is directly communicated with the first inlet 31 of the plate heat exchanger and is connected to the high-pressure interface 101 inside the valve island body 1. This connection method provides the shortest and most direct path for the high-temperature and high-pressure refrigerant to enter the plate heat exchanger 3. When the air-conditioning system is operating, the high-temperature and high-pressure refrigerant discharged from the compressor 9 enters the valve island body 1 through the high-pressure interface 101. Since the first interface 201 of the plate heat exchanger is directly communicated with the high-pressure interface 101, the refrigerant can quickly reach the first inlet 31 of the plate heat exchanger and enter the inside of the plate heat exchanger 3 without passing through complex pipeline detours or multiple turns.

[0102] It can be understood that in some embodiments of the present application, the directly communicated path greatly reduces the energy loss and pressure loss of the refrigerant during the transmission process, ensuring that the refrigerant enters the plate heat exchanger 3 at a relatively high pressure and temperature, enabling the plate heat exchanger 3 to fully exert its high-efficiency heat exchange characteristics, quickly complete the heat exchange, and thus improve the refrigeration or heating efficiency of the air-conditioning system.

[0103] The first interface 201 of the plate heat exchanger is communicated with the high-pressure interface 101 through the internal flow channel inside the valve island body 1, closely integrating the plate heat exchanger 3 and the high-pressure refrigerant transmission path into the valve island assembly 100. The first interface 201 of the plate heat exchanger is directly connected to the high-pressure interface 101 through the internal flow channel, realizing the integrated integration of the plate heat exchanger 3 and the high-pressure refrigerant transmission path. This means that when installing and connecting the air-conditioning system, only the external equipment needs to be docked with the corresponding interfaces on the valve island assembly 100, and there is no need to perform complex external connection operations between the plate heat exchanger 3 and the high-pressure pipeline. The number and length of the external connection pipelines are reduced, the pipeline layout of the entire air-conditioning system is simplified, the system structure is more compact, and the integration degree of the air-conditioning system is effectively improved.

[0104] According to some embodiments of the present application, for the valve island assembly 100, the high-pressure interface 101 is higher than one side surface of the valve island body 1.

[0105] Due to the protrusion at the interface position, the high-pressure pipeline connecting the compressor 9 can be directly inserted into the interface vertically or approximately vertically, avoiding the right-angle bending required for traditional flush interfaces. The exhaust pipe of the compressor 9 extends linearly and can be directly docked with the high-position high-pressure interface 101, reducing the number of pipeline elbows, lowering the frictional resistance of the refrigerant flow, avoiding the eddy current and pressure loss caused by pipeline bending, ensuring that the high-temperature and high-pressure refrigerant enters the internal flow channel of the valve island body 1 with higher energy efficiency, and laying an efficient foundation for subsequent flow control and heat exchange. The high-pressure interface 101 above the surface has a visual guiding effect. In the maintenance scenario, the height difference between the high-position interface and the surface of the valve island body 1 reserves space for tool operation. A wrench or screwdriver can directly contact the interface from above or the side, avoiding the problem that the tool cannot be inserted due to the traditional flush interface being close to the surface, and greatly improving the maintenance efficiency.

[0106] For the valve island assembly 100 according to some embodiments of the present application, a first outlet 32 of the plate heat exchanger is provided on the plate heat exchanger 3, and the first outlet 32 of the plate heat exchanger is communicated with the first inlet 31 of the plate heat exchanger; one of the second interfaces 12 is configured as a second interface 202 of the plate heat exchanger, and the second interface 202 of the plate heat exchanger is communicated with the first outlet 32 of the plate heat exchanger.

[0107] The second interface 202 of the plate heat exchanger is directly communicated with the first outlet through the internal flow channel of the valve island body 1, replacing the connection mode of connecting the external pipeline at the heat exchanger outlet to the valve island interface, avoiding the need for additional connection points for the external pipeline, and being prone to refrigerant leakage due to vibration and aging during long-term operation. Moreover, the pipeline length will increase the flow resistance and heat loss. In the present application, by canceling the external pipeline, the distance between the heat exchanger outlet and the valve island interface is shortened to within the thickness range of the valve island body 1, reducing the required mating pipelines. The reduction in the number of interfaces reduces the leakage probability, and at the same time, the short path of the internal flow channel.

[0108] For the valve island assembly 100 according to some embodiments of the present application, at least two of the plurality of first interfaces 11 are configured as shunt ports, and the plurality of shunt ports are respectively communicated with the second interface 202 of the plate heat exchanger.

[0109] The direct communication between the shunt port and the second interface 202 of the plate heat exchanger integrates the external shunt function into the internal of the valve island body 1, avoiding the realization of refrigerant shunting through an external manifold. Some embodiments of the present application complete the shunting through the built-in flow channel of the valve island body 1, reducing the external pipelines. The shunt function is built into the thickness direction of the valve island body 1, without occupying additional space, reducing the space occupied by the valve island assembly 100, and providing additional space for the placement of the remaining structures.

[0110] According to some embodiments of the present application, for the valve island assembly 100, two first interfaces 11 are respectively configured as a first shunt port 106 and a second shunt port 107 and are communicated with the second interface 202 of the plate heat exchanger; wherein the first shunt port 106 is adapted to be communicated with the refrigerant radiator 8, and the second shunt port 107 is adapted to be communicated with an expansion valve.

[0111] It can be understood that the first shunt port 106 communicates a part of the refrigerant processed by the plate heat exchanger 3 with the refrigerant radiator 8, and then exchanges heat with the outdoor heat exchanger. The second shunt port 107 communicates the other part of the refrigerant processed by the plate heat exchanger 3 with the expansion valve. The expansion valve can be an external expansion valve or an expansion valve integrated in the valve island assembly 100, and can then flow back to the plate heat exchanger 3 to exchange heat with the adjacent flow channels in the plate heat exchanger 3, and then flow back to the gas supplement port 91 of the compressor 9.

[0112] In some embodiments of the present application, the refrigerant radiator 8 is configured as a refrigerant ring.

[0113] According to some embodiments of the present application, for the valve island assembly 100, the plate heat exchanger 3 is provided with a second inlet 33 of the plate heat exchanger; the valve island assembly 100 further includes: a first expansion valve 22, the first expansion valve 22 has an expansion valve first interface 11 and an expansion valve second interface 12, the expansion valve first interface 11 is communicated with the second shunt port 107, and the second interface 12 of the expansion valve is communicated with the second inlet 33 of the plate heat exchanger.

[0114] Further, the refrigerant flowing out of the second shunt port 107 is the refrigerant preliminarily cooled by the plate heat exchanger 3. First, it enters the first expansion valve 22, is throttled and depressurized through the aperture of the expansion valve first interface 11, and the temperature drops to near the evaporation temperature. The throttled refrigerant flows into the second inlet 33 of the plate heat exchanger through the expansion valve second interface 12 and exchanges heat with the adjacent flow channels in the plate heat exchanger 3. Since an additional heat exchange component is introduced, the heat exchange efficiency of the plate heat exchanger 3 can be improved, and the energy requirement of the plate heat exchanger 3 can be reduced.

[0115] According to some embodiments of the present application, for the valve island assembly 100, the valve island assembly 100 further includes: a first solenoid valve 23, the first solenoid valve 23 can be selectively turned on or off and is located on the upstream side or the downstream side of the first expansion valve 22.

[0116] It can be understood that the first solenoid valve 23 is located on the upstream side or the downstream side of the first expansion valve 22, so that the first solenoid valve 23 can conduct or cut off the gas replenishing circuit. When the solenoid valve is opened, the throttled low-temperature refrigerant is allowed to enter the adjacent flow channels of the plate heat exchanger 3 to exchange heat with the high-pressure refrigerant in the main circuit. When the solenoid valve is closed, unnecessary energy loss can be avoided, the misactivation of the gas replenishing branch during summer refrigeration can be prevented, the compressor 9 from sucking in overheated gas, the exhaust temperature can be reduced, and the motor life can be extended. Moreover, when the solenoid valve is closed, the refrigerant does not pass through the reflux circuit, and the refrigeration effect is weakened, which is suitable for refrigeration at a relatively high set temperature, or in the field of vehicle air conditioners, to cool the engine heat and achieve temperature control.

[0117] For the valve island assembly 100 according to some embodiments of the present application, two first interfaces 11 in the valve island body 1 are communicated with each other and are respectively configured as a first solenoid valve interface 108 and a first expansion valve inlet 109; the first solenoid valve 23 has a first end of the first solenoid valve 23 and a second end of the first solenoid valve 23 that can be selectively conducted. The first end of the first solenoid valve 23 is communicated with the second shunt port 107, and the second end of the first solenoid valve 23 is communicated with the first solenoid valve interface 108; the expansion valve first interface 11 of the first expansion valve 22 is communicated with the first expansion valve inlet 109.

[0118] The two first interfaces 11 in the valve island body 1 are communicated with each other and are respectively configured as a first solenoid valve interface 108 and a first expansion valve inlet 109 to realize the series connection of the first solenoid valve 23 and the first expansion valve 22, and realize the control of whether the refrigerant enters the gas replenishing circuit in the on-off state of the solenoid valve. Specifically, after the refrigerant flows out from the second shunt port 107, it is connected to the first end of the first solenoid valve 23. The first end of the first solenoid valve 23 and the second end of the first solenoid valve 23 can be selectively conducted. The second end of the first solenoid valve 23 is conducted with the first expansion valve inlet 109, and the first expansion valve inlet 109 is communicated with the expansion valve first interface 11. Integrating the first solenoid valve interface 108 and the first expansion valve inlet 109 inside the valve island body 1 for communication, replacing the traditional external pipeline connection, realizing the compression of the space structure. The first solenoid valve 23 and the first expansion valve 22 can be quickly docked through the standardized interfaces on the surface of the valve island body 1, which can be snap-type or flange-type connection. During installation, only the positions of the solenoid valve and the expansion valve need to be fixed, and there is no need to adjust the pipeline angle, which can improve the installation efficiency.

[0119] In some embodiments of the present application, it further includes a capillary tube 7. The capillary tube 7 is disposed between the first solenoid valve interface 108 and the first expansion valve inlet 109 and is in communication with the first solenoid valve interface 108 and the first expansion valve inlet 109. The capillary tube 7 functions as a throttle between the first solenoid valve interface 108 and the first expansion valve inlet 109. The flow rate of the capillary tube 7 is related to the pressure difference at both ends, the pipe diameter, and the length. When the system load changes, the pressure at the evaporator outlet will change accordingly, resulting in a change in the pressure difference across the capillary tube 7, thereby automatically adjusting the refrigerant flow rate.

[0120] In some other embodiments of the present application, the communication channel between the first solenoid valve interface 108 and the first expansion valve inlet 109 is configured as the capillary tube 7.

[0121] For the valve island assembly 100 according to some embodiments of the present application, one of the first interfaces 11 is configured as the first expansion valve outlet 1010, and the first expansion valve outlet 1010 is in communication with the second expansion valve interface 12 of the first expansion valve 22; one of the second interfaces 12 is configured as the third plate heat exchanger interface 203, and the third plate heat exchanger interface 203 is in communication with the first expansion valve outlet 1010, and the third plate heat exchanger interface 203 is in communication with the second inlet 33 of the plate heat exchanger.

[0122] One of the first interfaces 11 is configured as the first expansion valve outlet 1010, and the first expansion valve outlet 1010 is directly in communication with the second expansion valve interface 12 of the first expansion valve 22, serving as the output channel for the refrigerant after throttling; one of the second interfaces 12 is configured as the third plate heat exchanger interface 203. On the one hand, it is connected to the first expansion valve outlet 1010 to receive the refrigerant from the first expansion valve 22, and on the other hand, it is in communication with the second inlet 33 of the plate heat exchanger to introduce the refrigerant into the internal flow path of the plate heat exchanger 3. In this way, the refrigerant is throttled and depressurized by the first expansion valve 22 in sequence, transmitted through the first expansion valve outlet 1010 and the third plate heat exchanger interface 203, and enters the heat exchanger for secondary heat exchange from the second inlet 33 of the plate heat exchanger, enabling the valve island assembly 100 to cooperate with the plate heat exchanger 3 and enhancing the integration degree of the valve island assembly 100.

[0123] For the valve island assembly 100 according to some embodiments of the present application, the plate heat exchanger 3 is provided with a second plate heat exchanger outlet 34 in communication with the second inlet 33 of the plate heat exchanger; one of the second interfaces 12 is configured as the fourth plate heat exchanger interface 204, and the fourth plate heat exchanger interface 204 is adapted to be in communication with the second plate heat exchanger outlet 34.

[0124] The connection between the second outlet 34 of the plate heat exchanger and the fourth interface 204 of the plate heat exchanger forms a refrigerant channel with the second inlet 33 of the plate heat exchanger. During the operation of the air-conditioning system, the low-temperature and low-pressure refrigerant throttled and depressurized by the first expansion valve 22 enters the interior of the heat exchanger from the second inlet 33 of the plate heat exchanger. Between the plates, the refrigerant exchanges heat with the high-temperature and high-pressure refrigerant in the adjacent flow channels, and after fully absorbing the heat, it becomes a low-temperature and low-pressure gaseous refrigerant, which then flows out from the second outlet 34 of the plate heat exchanger and is transmitted to the subsequent process through the fourth interface 204 of the plate heat exchanger, avoiding unnecessary detours of the refrigerant in the heat exchanger. The direct connection between the fourth interface 204 of the plate heat exchanger and the second outlet 34 further integrates the connection between the plate heat exchanger 3 and the valve island assembly 100. The fourth interface 204 of the plate heat exchanger is connected to the second outlet 34 through an internal flow channel, eliminating the need for complex external pipeline connections between the heat exchanger and the valve island assembly 100. Only the corresponding interfaces need to be accurately docked.

[0125] In the valve island assembly 100 according to some embodiments of the present application, one of the second interfaces 12 is configured to connect to the enthalpy-increasing outlet 205 of the compressor 9, and the enthalpy-increasing outlet 205 is connected and adapted to communicate with the gas injection port 91 of the compressor 9 inside the valve island body 1.

[0126] Through the connection between the enthalpy-increasing outlet 205, the fourth interface 204 of the plate heat exchanger and the gas injection port 91 of the compressor 9, an intermediate gas injection circulation path is formed. During the operation of the air-conditioning system, the low-temperature and low-pressure gas-liquid two-phase refrigerant throttled by the first expansion valve 22 enters the plate heat exchanger 3 from the second inlet 33 of the plate heat exchanger, exchanges heat with the high-temperature and high-pressure refrigerant in the main circuit between the plates, and after fully absorbing the heat, becomes a low-temperature and low-pressure gaseous refrigerant, which flows out from the second outlet 34 of the plate heat exchanger and finally enters the gas injection port 91 of the compressor 9 through the internal connection flow channel between the fourth interface 204 of the plate heat exchanger and the enthalpy-increasing outlet 205. By injecting gas, the compression process is divided into two stages, reducing the pressure increase amplitude in each stage. In this way, the pressure difference that the compressor 9 needs to overcome during operation is reduced, the compression power consumption is lowered, and the energy efficiency ratio is significantly improved. The connection between the enthalpy-increasing outlet 205 and the fourth interface 204 of the plate heat exchanger further enhances the heat exchange effect of the plate heat exchanger 3. In the gas injection circulation, the low-temperature and low-pressure gas-liquid two-phase refrigerant entering from the second inlet 33 of the plate heat exchanger exchanges countercurrent heat with the high-temperature and high-pressure refrigerant in the main circuit between the plates. Since the temperature of the gas injection refrigerant is relatively low, a large temperature difference is formed with the main circuit refrigerant, enabling it to more fully absorb the heat of the main circuit refrigerant and increasing the subcooling degree of the main circuit refrigerant.

[0127] The valve island assembly 100 according to some embodiments of the present application further includes: a second expansion valve 24. The second expansion valve 24 is provided with a first interface 11 of the second expansion valve 24 and a second interface 12 of the second expansion valve 24. The first interface 11 of the second expansion valve 24 and the second interface 12 of the second expansion valve 24 are respectively connected to the valve island body 1 through two first interfaces 11. The second expansion valve 24 is adapted to communicate the refrigerant radiator 8 with the outdoor heat exchanger 5.

[0128] In the plate heat exchanger 3, the refrigerant has completed the preliminary heat exchange but still carries some residual heat. When the refrigerant flows into the refrigerant radiator 8, its temperature further decreases and the pressure also tends to stabilize. After passing through the refrigerant radiator 8, it creates more favorable conditions for the subsequent operation of the outdoor heat exchanger 5. The refrigerant pre-cooled by the refrigerant radiator 8 has a larger temperature difference with the external environment when entering the outdoor heat exchanger 5, enabling more efficient heat exchange and improving the condensation efficiency of the outdoor heat exchanger 5. At the same time, the optimization of the refrigerant state reduces the probability of forming a gas-liquid mixed state in the outdoor heat exchanger 5, ensuring that it completes the phase change process in a more stable state and avoiding uneven heat exchange caused by local overheating or overcooling, thereby improving the heat exchange efficiency of the entire system.

[0129] At the same time, after the refrigerant passes through the refrigerant radiator 8, the second expansion valve 24 plays a throttling and regulating role. At this time, the refrigerant is in a medium-pressure state after pre-cooling. The second expansion valve 24 can adjust the flow rate and pressure of the refrigerant according to the real-time working conditions of the system. When the ambient temperature is high and the system load increases, the second expansion valve 24 appropriately increases the opening degree to allow more pre-cooled refrigerant to pass through quickly, accelerating heat dissipation in the outdoor heat exchanger 5, reducing the high-pressure of the system, and reducing the power consumption of the compressor 9; when the system is operating at low load, such as at night or when the indoor temperature is close to the set value, the second expansion valve 24 reduces the opening degree to limit the refrigerant flow rate, avoiding excessive condensation of the refrigerant in the outdoor heat exchanger 5, maintaining the stability of the low-pressure of the system, and preventing the compressor 9 from starting and stopping frequently.

[0130] In the valve island assembly 100 according to some embodiments of the present application, one of the first interfaces 11 is configured as a refrigerant radiator inlet 1011, and the refrigerant radiator inlet 1011 is adapted to be connected to the refrigerant radiator 8; one of the first interfaces 11 is configured as a second expansion valve inlet 1012, and the second expansion valve inlet 1012 is in communication with the first interface 11 of the second expansion valve 24 and is in communication inside the valve island with the refrigerant radiator inlet 1011.

[0131] The mating connection between the refrigerant radiator inlet 1011 and the refrigerant radiator 8 provides a clear and efficient heat dissipation channel for the high-temperature refrigerant. When the refrigerant discharged from the plate heat exchanger 3 enters the refrigerant radiator 8 through the refrigerant radiator inlet 1011, the refrigerant comes into full contact with the external cooling medium, releasing a large amount of heat, thereby achieving pre-cooling of the refrigerant and significantly reducing its temperature. The connection between the refrigerant radiator inlet 1011 and the second expansion valve inlet 1012 inside the valve island simplifies the external structure of the air-conditioning system, avoids the problems of requiring a large number of external pipes and complex joints, reduces the installation difficulty and cost, improves the integration degree, and makes the system structure more compact.

[0132] According to some embodiments of the present application, for the valve island assembly 100, one of the first interfaces 11 is configured as the second expansion valve outlet 1013, and the second expansion valve outlet 1013 is in communication with the second interface 12 of the second expansion valve 24; one of the first interfaces 11 is configured as the outdoor heat exchanger interface 1014, and the outdoor heat exchanger interface 1014 is adapted to communicate with the outdoor heat exchanger and is in communication with the second expansion valve outlet 1013 inside the valve island.

[0133] The communication between the second expansion valve outlet 1013 and the outdoor heat exchanger interface 1014 forms a direct channel for the refrigerant from throttling to condensation. During the operation of the air-conditioning system, the high-pressure refrigerant flowing out of the refrigerant radiator 8 first enters the second expansion valve 24 for throttling and pressure reduction. After being adjusted by the second expansion valve 24, the refrigerant becomes low-temperature and low-pressure, and then passes through the second expansion valve outlet 1013 and directly enters the outdoor heat exchanger interface 1014 that is in communication inside the valve island, and finally flows into the outdoor heat exchanger 5, enabling the throttled refrigerant to enter the outdoor heat exchanger 5 along the shortest path, reducing the heat loss and pressure fluctuation of the refrigerant during the transmission process. The path of the refrigerant from the second expansion valve outlet 1013 to the outdoor heat exchanger interface 1014 is extremely short and is carried out inside the valve island, effectively avoiding the interference of external heat, maintaining the low-temperature state of the refrigerant, and enabling the refrigerant to exchange heat with the external environment more efficiently when entering the outdoor heat exchanger 5, thereby improving the condensation efficiency.

[0134] The communication between the second expansion valve outlet 1013 and the outdoor heat exchanger interface 1014 inside the valve island simplifies the pipeline layout of the air-conditioning system. The second expansion valve outlet 1013 and the outdoor heat exchanger interface 1014 are directly connected through the flow channel inside the valve island, without the need for complex pipeline connections outside the valve island, reducing the number and length of the external connection pipes, and making the system pipeline layout more concise.

[0135] According to some embodiments of the present application, the valve island assembly 100 further includes: a filter 4, and the filter 4 is disposed between the outdoor heat exchanger interface 1014 and the outdoor heat exchanger.

[0136] The primary function of the filter 4 is to intercept impurities that may be carried during the refrigerant circulation process. During the long-term operation of the air-conditioning system, impurities such as metal debris, oxide scales, and sealant particles may be generated inside the refrigerant pipeline. These impurities flow with the refrigerant. If they enter the outdoor heat exchanger, they may block the flow channels of the heat exchanger and may also cause erosion and wear to components such as the pipe wall and fins of the heat exchanger during the refrigerant flow process, accelerating the aging of the equipment. By installing the filter 4 between the outdoor heat exchanger interface 1014 and the outdoor heat exchanger, the wear of the equipment is reduced by filtering impurities, and the service life of the outdoor heat exchanger is extended. After installing the filter 4, the maintenance cycles of the outdoor heat exchanger and the compressor 9 are extended, and the overall maintenance cost of the air-conditioning system is significantly reduced.

[0137] In some embodiments of the present application, the interface diameter of the outdoor heat exchanger interface 1014 is larger than that of other interfaces, and the filter 4 of the pipeline where the outdoor heat exchanger interface 1014 is located can be further integrated, further improving the integration degree of the valve island assembly 100.

[0138] According to the valve island assembly 100 of some embodiments of the present application, the outdoor heat exchanger 5 is configured as a finned tube heat exchanger and is arranged downstream of the filter 4.

[0139] The fins of the heat exchanger are closely attached to the surface of the heat exchanger heat exchange tubes, which can expand the contact area between the refrigerant inside the tubes and the outside air. When the pre-cooled refrigerant flows through the heat exchange tubes of the heat exchanger, the fins can quickly absorb the heat inside the tubes and dissipate it into the air. The heat exchange tubes of the finned tube heat exchanger are made of thin-walled copper tubes or micro-channel aluminum tubes, and the internal flow channels are smooth and the diameters are adapted to the state of the refrigerant after throttling, which can keep the gas-liquid mixture in a turbulent state inside the tubes, avoiding the deposition of liquid refrigerant or the retention of gaseous refrigerant caused by too low flow velocity. Arranging the heat exchanger downstream of the filter 4 can reduce the impurity content of the refrigerant entering the heat exchanger and ensure the long-term smoothness of the flow channels.

[0140] According to the valve island assembly 100 of some embodiments of the present application, a condenser inlet 13 suitable for connecting to the outdoor heat exchanger 5 is provided on the valve island body 1, and the condenser inlet 13 is communicated with the third interface 105 of the four-way valve inside the valve island to connect the outdoor heat exchanger 5 with the C interface 214.

[0141] The connection interface of the outdoor heat exchanger 5 is also integrated onto the valve island body 1. The condenser inlet 13 is communicated with the third interface 105 of the four-way valve inside the valve island body 1, canceling the external pipeline between the condenser and the four-way valve 21, significantly reducing the dimensions of the valve island assembly 100 in both the horizontal and vertical directions. The compact valve island structure makes it easier to install in scenarios with limited space, such as the narrow engine compartment of a vehicle-mounted air conditioner or the ultra-thin outdoor unit of a household air conditioner. This space integration ability improves the adaptability of the product to diverse application environments.

[0142] The valve island assembly 100 according to some embodiments of the present application further includes: a gas-liquid separator 6. The gas-liquid separator 6 is disposed on the other side of the valve island body 1. One of the second interfaces 12 is configured as a first gas-liquid separator interface 206. The first gas-liquid separator interface 206 communicates with the second four-way valve interface 104 inside the valve island. The gas-liquid separator 6 connects the C interface 214 to the suction port 92 of the compressor 9.

[0143] The function of the gas-liquid separator 6 is to separate the gaseous and liquid components in the refrigerant, ensuring the stable operation of the system, improving efficiency, and protecting the core components. If the liquid refrigerant directly enters the compressor 9, it will damage the internal parts of the compressor 9 due to the incompressibility of the liquid. After the gas-liquid mixture enters the gas-liquid separator 6 through its internal structure, the liquid refrigerant settles to the bottom, and the gaseous refrigerant flows from the top outlet to the compressor 9, avoiding the direct suction of the liquid refrigerant into the compressor 9. The integration of the gas-liquid separator 6 with the valve island body 1 avoids the need for the gas-liquid separator 6 to be usually installed independently in the traditional system, which requires additional space and is connected by long pipelines. By integrating the gas-liquid separator 6 on the other side of the valve island and connecting it through the internal flow channels, the overall volume is reduced, and the space occupation is decreased.

[0144] In the valve island assembly 100 according to some embodiments of the present application, one of the second interfaces 12 is configured as a second gas-liquid separator interface 207, and the second gas-liquid separator interface 207 is adapted to communicate with the gas-liquid separator 6; one of the second interfaces 12 is configured as a compressor suction interface 208, and the compressor suction interface 208 communicates with the second gas-liquid separator interface 207 inside the valve island and is adapted to communicate with the suction port 92 of the compressor 9.

[0145] The refrigerant flowing out from the evaporator enters the internal flow channels of the valve island through the second gas-liquid separator interface 207. First, it passes through the separation structure of the gas-liquid separator 6. The liquid refrigerant settles to the bottom of the separator due to gravity, and the gaseous refrigerant flows through the internal flow channels to the compressor suction interface 208. The lubricating oil in the refrigerant is also intercepted during the gas-liquid separation process. At the same time, the internal connection improves the system reliability by reducing the connection points and optimizing the flow path. The existing connection joints are integrated into the rigid flow channels inside the valve island, eliminating potential leakage points. The leakage probability of the high-pressure gaseous refrigerant in the refrigeration system is significantly reduced, extending the service life of the refrigerant and reducing the impact on the environment. The closed structure of the internal flow channels reduces the risk of external impurities entering the system. A filter screen can be set at the inlet of the gas-liquid separator 6 to further intercept particulate impurities and protect the compressor 9 from wear.

[0146] In the valve island assembly 100 according to some embodiments of the present application, the second four-way valve interface 104 in the valve island body 1 and the first gas-liquid separator interface 206 are disposed opposite to each other in terms of thickness.

[0147] The second interface 104 of the four-way valve is disposed opposite to the first interface 206 of the gas-liquid separator in terms of thickness, reducing the dimension of the valve island assembly 100 in the thickness direction. In the prior art, the connection is made through a vertically bent flow channel, resulting in an increase in the height of the assembly. After the opposite setting, the flow channel penetrates straight in the height direction without additional vertical detours, compressing the overall height. At the same time, the four-way valve 21 and the gas-liquid separator 6 can be stacked vertically in the height direction. The four-way valve 21 is installed on the top of the valve island, and the gas-liquid separator 6 is integrated at the bottom. The interfaces of the two are directly connected through an internal vertical flow channel, avoiding the spacing required for the traditional horizontal arrangement and further compressing the space occupied.

[0148] The air-conditioning system according to an embodiment of the present application will be briefly described below.

[0149] The air-conditioning system according to an embodiment of the present application includes the valve island assembly 100 of any of the above embodiments. Since the valve island assembly 100 of any of the above embodiments is provided on the air-conditioning system according to the present embodiment, therefore, the valve body 2 of the air-conditioning system according to the present application is directly installed on one side of the valve island body 1 and is docked with the interface of the plate heat exchanger 3 on the other side through an internally connected flow channel, enabling the valve body 2 that controls fluid control to be linked with the plate heat exchanger 3 that controls heat exchange without relying on external pipeline transfer, reducing the number of independent components and the complexity of interfaces in the system, and improving the integration degree; the space occupied by the air-conditioning system of the present application is optimized. In the prior art, the valves and heat exchangers are scattered, and a straight distance and a detour space required for pipeline installation need to be reserved. After integration, by directly fitting the two sides of the valve island body 1, the fluid path is shortened to be directly connected through the internal flow channel of the valve island body 1, saving the space occupied by the pipeline and making the overall planar layout of the module more compact; the leakage risk of the air-conditioning system according to the present application is reduced. In the prior art, through pipeline connection, there are multiple detachable interfaces, which are prone to fluid leakage due to vibration or aging. However, the valve island assembly 100 is integrally formed through an internal flow channel and the interfaces are directly fixedly connected, reducing the number of exposed interfaces and reducing the leakage risk. Further, due to the reduction of interfaces, the maintenance convenience is enhanced. The integrated valve island assembly 100 can be detected separately and can be quickly replaced as a whole during maintenance, avoiding the cumbersome process in traditional maintenance, shortening the maintenance time and reducing the operation complexity.

[0150] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0151] In the description of the present application, the "first feature" and "second feature" may include one or more of such features.

[0152] In the description of the present application, the meaning of "a plurality" is two or more.

[0153] In the description of the present application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0154] In the description of the present application, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0155] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0156] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A valve island assembly, characterized in that, Comprising: A valve island body, on one surface of the valve island body in the thickness direction, a plurality of first interfaces are formed, and on the other surface of the valve island body in the thickness direction, a plurality of second interfaces are formed. A communication flow path is formed in the valve island body to connect at least two of the first interfaces, at least two of the second interfaces, or one of the first interfaces and one of the second interfaces; A valve body, the valve body is arranged on one surface of the valve island body, and the valve body is communicated with the corresponding first interface; A plate heat exchanger, the plate heat exchanger is arranged on the other surface of the valve island body, the plate heat exchanger has a plurality of plate heat exchanger interfaces, and at least one of the plate heat exchanger interfaces corresponds to and is communicated with at least one of the second interfaces.

2. The valve island assembly according to claim 1, wherein, A high-pressure interface and a low-pressure interface are formed on the valve island body, and the high-pressure interface and the low-pressure interface are respectively adapted to be connected to an indoor heat exchanger; Wherein The high-pressure interface is communicated with the first interface, and the low-pressure interface is communicated with the second interface.

3. The valve island assembly according to claim 2, wherein, The valve body includes: A four-way valve, the four-way valve is arranged on one surface of the valve island body and has a main interface, an E interface, an S interface, and a C interface that can be selectively communicated with each other. The main interface is adapted to be connected to the outlet of a compressor, and the E interface, the S interface, and the C interface are respectively communicated with the corresponding first interfaces; wherein The E interface is communicated to the high-pressure interface through the corresponding first interface, and the corresponding first interface is the first four-way valve interface; The S interface is communicated to the corresponding second interface through the corresponding first interface, the second interface is adapted to be connected to the return air port of the compressor, and the corresponding first interface is the second four-way valve interface; The C interface is connected to an outdoor heat exchanger through the corresponding first interface, and the corresponding first interface is the third four-way valve interface.

4. The valve island assembly according to claim 3, wherein The first four-way valve interface, the second four-way valve interface, and the third four-way valve interface extend in the same straight line.

5. The valve island assembly according to claim 3, characterized in that, A first edge extending in the width direction is formed on the valve island body, and the high-pressure interface and the low-pressure interface are respectively located at the first edge.

6. The valve island assembly according to claim 5, characterized in that, The opening directions of the high-pressure interface and the low-pressure interface are the same.

7. The valve island assembly according to claim 5, characterized in that The positions of the first four-way valve interface, the second four-way valve interface, and the third four-way valve interface projected on the first edge do not exceed the high-pressure interface on one side in the width direction and / or do not exceed the low-pressure interface on the other side in the width direction.

8. The valve island assembly according to claim 7, characterized in that, The four-way valve includes: An E connection pipe, the E connection pipe extends in a direction perpendicular to the valve island, and the E connection pipe communicates the E interface with the first four-way valve interface; An S connection pipe, the S connection pipe extends in a direction perpendicular to the valve island, and the S connection pipe communicates the S interface with the second four-way valve interface; A C connection pipe, the C connection pipe extends in a direction perpendicular to the valve island, and the C connection pipe communicates the C interface with the third four-way valve interface; The E connection pipe, the S connection pipe, and the C connection pipe are all located between the high-pressure interface and the low-pressure interface.

9. The valve island assembly according to claim 2, characterized in that, The plate heat exchanger is provided with a first inlet of the plate heat exchanger. One of the second interfaces is configured as a first interface of the plate heat exchanger. The first interface of the plate heat exchanger is communicated with the first inlet of the plate heat exchanger. Inside the valve island body, the first interface of the plate heat exchanger is communicated with the high-pressure interface.

10. The valve island assembly according to claim 9, characterized in that, The high-pressure interface is higher than one side surface of the valve island body.

11. The valve island assembly according to claim 9, characterized in that, The plate heat exchanger is provided with a first outlet of the plate heat exchanger. The first outlet of the plate heat exchanger is communicated with the first inlet of the plate heat exchanger. One of the second interfaces is configured as a second interface of the plate heat exchanger. The second interface of the plate heat exchanger is communicated with the first outlet of the plate heat exchanger.

12. The valve island assembly according to claim 11, wherein At least two of the plurality of first interfaces are configured as shunt ports. The plurality of shunt ports are respectively communicated with the second interface of the plate heat exchanger.

13. The valve island assembly according to claim 12, characterized in that, Two of the first interfaces are respectively configured as a first shunt port and a second shunt port and are communicated with the second interface of the plate heat exchanger. Among them The first shunt port is adapted to be communicated with a refrigerant radiator, and the second shunt port is adapted to be communicated with an expansion valve.

14. The valve island assembly according to claim 13, characterized in that, The plate heat exchanger is provided with a second inlet of the plate heat exchanger. The valve island assembly further includes: A first expansion valve. The first expansion valve has a first interface of the expansion valve and a second interface of the expansion valve. The first interface of the expansion valve is communicated with the second shunt port, and the second interface of the expansion valve is communicated with the second inlet of the plate heat exchanger.

15. The valve island assembly according to claim 14, characterized in that, The valve island assembly further includes: A first solenoid valve. The first solenoid valve can be selectively turned on or off and is located on the upstream side or the downstream side of the first expansion valve.

16. The valve island assembly according to claim 15, characterized in that, In the valve island body, the two first interfaces are communicated with each other and are respectively configured as a first solenoid valve interface and an inlet of the first expansion valve. The first solenoid valve has a first end of the first solenoid valve and a second end of the first solenoid valve that can be selectively turned on. The first end of the first solenoid valve is communicated with the second shunt port, and the second end of the first solenoid valve is communicated with the first solenoid valve interface. The first interface of the expansion valve of the first expansion valve is communicated with the inlet of the first expansion valve.

17. The valve island assembly according to claim 16, wherein, One of the first interfaces is configured as an outlet of the first expansion valve. The outlet of the first expansion valve is communicated with the second interface of the expansion valve of the first expansion valve. One of the second interfaces is configured as a third interface of the plate heat exchanger. The third interface of the plate heat exchanger is communicated with the outlet of the first expansion valve. The third interface of the plate heat exchanger is communicated with the second inlet of the plate heat exchanger.

18. The valve island assembly according to claim 9, characterized in that, The plate heat exchanger is provided with a second outlet communicated with the second inlet of the plate heat exchanger. One of the second interfaces is configured as a fourth interface of the plate heat exchanger. The fourth interface of the plate heat exchanger is adapted to be communicated with the second outlet of the plate heat exchanger.

19. The valve island assembly according to claim 18, characterized in that, One of the second interfaces is configured as an enthalpy-increasing outlet for connecting a compressor. The enthalpy-increasing outlet is communicated with the fourth interface of the plate heat exchanger inside the valve island body and is adapted to be communicated with the air supplement port of the compressor.

20. The valve island assembly according to claim 13, characterized in that, It further includes: A second expansion valve, the second expansion valve is provided with a first interface of the second expansion valve and a second interface of the second expansion valve, the first interface of the second expansion valve and the second interface of the second expansion valve are respectively connected to the valve island body through two first interfaces, and the second expansion valve is adapted to communicate the refrigerant radiator with the outdoor heat exchanger.

21. The valve island assembly according to claim 20, wherein One of the first interfaces is configured as a refrigerant radiator inlet, and the refrigerant radiator inlet is adapted to be connected to a refrigerant radiator; One of the first interfaces is configured as a second expansion valve inlet, and the second expansion valve inlet communicates with the first interface of the second expansion valve and communicates with the refrigerant radiator inlet inside the valve island.

22. The valve island assembly according to claim 21, wherein One of the first interfaces is configured as a second expansion valve outlet, and the second expansion valve outlet communicates with the second interface of the second expansion valve; One of the first interfaces is configured as an outdoor heat exchanger interface, and the outdoor heat exchanger interface is adapted to communicate with an outdoor heat exchanger and communicates with the second expansion valve outlet inside the valve island.

23. The valve island assembly according to claim 22, wherein, Further comprising: A filter, the filter is disposed between the outdoor heat exchanger interface and the outdoor heat exchanger.

24. The valve island assembly according to claim 23, wherein, The outdoor heat exchanger is configured as a finned tube heat exchanger and is disposed downstream of the filter.

25. The valve island assembly according to claim 8, characterized in that, A condenser inlet adapted to be connected to the outdoor heat exchanger is provided on the valve island body, and the condenser inlet communicates with the third interface of the four-way valve inside the valve island to communicate the outdoor heat exchanger with the C interface.

26. The valve island assembly according to claim 3, characterized in that, Further comprising: A gas-liquid separator, the gas-liquid separator is disposed on the other side of the valve island body, one of the second interfaces is configured as a first interface of the gas-liquid separator, the first interface of the gas-liquid separator communicates with the second interface of the four-way valve inside the valve island, and the gas-liquid separator communicates the C interface with the compressor suction port.

27. The valve island assembly according to claim 26, characterized in that, One of the second interfaces is configured as a second interface of the gas-liquid separator, and the second interface of the gas-liquid separator is adapted to communicate with the gas-liquid separator; One of the second interfaces is configured as a compressor suction interface, and the compressor suction interface communicates with the second interface of the gas-liquid separator inside the valve island and is adapted to communicate with the suction port of the compressor.

28. The valve island assembly according to claim 26, wherein, The second interface of the four-way valve in the valve island body and the first interface of the gas-liquid separator are disposed opposite to each other in thickness.

29. An air conditioning system, characterized in that, Comprising the valve island assembly according to any one of claims 1-28.

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