A flow path switching device

Abstract

The present invention discloses a flow path switching device, comprising a first solenoid valve core assembly and a main body. The main body comprises a first channel and a second channel, with at least a portion of the first solenoid valve core assembly located in the first channel; a second solenoid valve core assembly, with at least a portion of the second solenoid valve core assembly located in the second channel; a first communication area connected to at least four branch channels, with the first channel being one of the at least four branch channels and the second channel being one of the at least four branch channels; one of the at least four branch channels being defined as a third channel; the first communication area having a first partition, a second partition, and a third partition, with the first channel connected to the first partition, the second channel connected to the third partition, and the second partition connecting the first partition and the third partition; and a one-way valve core located in the second partition or in the third channel. This flow path switching device can improve system safety and stability.

Description

Technical Field

[0001] The present invention relates to the field of fluid control. Background Art

[0002] The heat pump system includes a compressor, an indoor condenser, an outdoor condenser, an evaporator, a gas-liquid separator, and valves connected by pipes. Since the heat pump system has at least cooling mode and heating mode, the fluid flow path is switched by valve control in the system. The system needs to use multiple valves to switch the flow path. Multiple valves are connected to the compressor and other components in the system through pipes. Multiple components similar to tees may be required to connect the pipes, and more components will be needed to connect the pipes. Summary of the Invention

[0003] An object of the present invention is to provide a flow path switching device.

[0004] In order to achieve the above purpose, the following technical solutions are adopted:

[0005] A flow path switching device includes a first solenoid valve core assembly and a main body, wherein the main body includes a first channel, and at least a portion of the first solenoid valve core assembly is located in the first channel;

[0006] The flow path switching device further includes a second solenoid valve core assembly, the main body includes a second channel, and at least a portion of the second solenoid valve core assembly is located in the second channel;

[0007] The main body is provided with a first communication area, the first communication area being connected to at least four branch channels, the first channel being one of the at least four branch channels, the second channel being one of the at least four branch channels; one of the at least four branch channels being defined as a third channel;

[0008] The first connected area has a first partition, a second partition, and a third partition, the first channel is connected to the first partition, the second channel is connected to the third partition, and the second partition is connected to the first partition and the third partition;

[0009] The flow path switching device further includes a one-way valve core, and the one-way valve core is located in the second partition or the one-way valve core is located in the third channel.

[0010] The above technical solution includes a first solenoid valve core assembly, a second solenoid valve core assembly and a one-way valve core. The main body is provided with a first connecting area, the first connecting area connects at least 4 branch channels, one of which is the first channel, one of which is the second channel, and one of which is the third channel. The first solenoid valve core assembly is located in the first channel, and the second solenoid valve core assembly is located in the second channel; the first connecting area has a first partition, a second partition and a third partition, wherein the first channel is connected to the first partition, the second channel is connected to the third partition, the second partition is connected to the first partition and the third partition, and the one-way valve core is located in the second partition or in the third channel. In this way, when the flow path switching device is connected to the application system, there are fewer connecting pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic structural diagram of a view of an embodiment of a flow path switching device;

[0012] Figure 2 for Figure 1 A structural schematic diagram of another view of the flow path switching device shown;

[0013] Figure 3 for Figure 1 A schematic diagram of the structure of the flow path switching device shown;

[0014] Figure 4 for Figure 1 A partial structural exploded schematic diagram of the flow path switching device shown;

[0015] Figure 5 for Figure 1 A partial structural exploded schematic diagram of the flow path switching device shown;

[0016] Figure 6 for Figure 1 A partial structural exploded schematic diagram of the flow path switching device shown;

[0017] Figure 7 for Figure 1 A partial structural exploded schematic diagram of the flow path switching device shown;

[0018] Figure 8 A simplified schematic diagram of an embodiment of a flow path switching device;

[0019] Figure 9 A simplified schematic diagram of another embodiment of the flow path switching device;

[0020] Figure 10 A schematic diagram of an embodiment of the cooperation between the one-way valve core and the main body;

[0021] Figure 11 It is a schematic diagram of another embodiment of the cooperation between the one-way valve core and the main body. DETAILED DESCRIPTION

[0022] Reference Figure 1-Figure 7 , Figure 1-Figure 7 A structural schematic diagram of a flow path switching device is shown, where the flow path switching device 100 includes a main body 11, which includes a first interface 112, a second interface 113, a third interface 111, a fourth interface 114, a fifth interface 115, and a sixth interface 116, wherein the third interface 111, the first interface 112, the second interface 113, the fourth interface 114, the fifth interface 115, and the sixth interface 116 are inlets or outlets for connecting the flow path switching device to external components.

[0023] The main body 11 includes a top side portion 117, which is the side facing upward when the flow path switching device 100 is normally placed. The flow path switching device 100 includes at least a valve core component 12, a first solenoid valve core assembly 13, a second solenoid valve core assembly 14, and a one-way valve core 15. The top side portion 117 defines a first installation cavity, a second installation cavity, and a third installation cavity. At least a portion of the first solenoid valve core assembly 13 is inserted from the top side portion 117 into the first installation cavity 1171, at least a portion of the second solenoid valve core assembly 14 is inserted from the top side portion 117 into the second installation cavity 1172, and at least a portion of the valve core component 12 is inserted from the top side portion 117 into the third installation cavity 1173. The one-way valve core 15 is located within the main body 11 and can be inserted into the main body 11 through the second interface 113. Each valve core assembly can include the core portion of the valve, or a stator coil structure if available, or a drive mechanism if available.

[0024] The main body 11 includes a peripheral side portion 118, and the peripheral side portion 118 is provided with a third interface 111, a fourth interface 114, a second interface 113 and a sixth interface 116. The valve core component 12, the first solenoid valve core assembly 13, and the second solenoid valve core assembly 14 are inserted into the interior of the main body 11 from the top side portion 117. The third interface 111, the fourth interface 114, the second interface 113 and the sixth interface 116 are located at the peripheral side portion 118. Since the flow path switching device 100 will be on the top side during use, the valve core assembly is inserted from the top side, which is beneficial to the service life of the valve core component 12, the first solenoid valve core assembly 13, and the second solenoid valve core assembly 14 and is beneficial to maintaining the stability of the performance of the valve core component 12, the first solenoid valve core assembly 13, and the second solenoid valve core assembly 14. It is also beneficial to the precise control of the fluid, improving the stability of the system, and also improving the safety of the system.

[0025] The flow path switching device 100 includes a fourth channel 101, a first channel 102, a third channel 103, a fifth channel 104, and a second channel 105. The fourth channel 101 can connect the third interface 111 with the fourth interface 114, the first channel 102 can connect the first interface 112 with the fifth interface 115, the third channel 103 can connect the first interface 112 with the second interface 113, the fifth channel 104 can connect the fifth interface 115 with the sixth interface 116, and the second channel 105 can connect the second interface 113 with the fourth interface 114. The first channel 102 passes through the valve seat 131 corresponding to the first solenoid valve core assembly 13, and the second channel 105 passes through the valve seat 141 corresponding to the second solenoid valve core assembly 14. Herein, a channel is defined as a path that a main body has when the valve core structure is not assembled. A channel refers to a path through which fluid can flow, but is not limited to a path through which fluid always flows. A channel includes the wall portion of the main body that defines the channel space.

[0026] Reference Figure 8 and Figure 9 The main body 11 is provided with a first connecting area 1111, which connects at least 4 branch channels. The first channel 102 is one of the at least 4 branch channels, and the second channel 105 is one of the at least 4 branch channels; one of the at least 4 branch channels is defined as the third channel 103; and one of the at least 4 branch channels is defined as the sixth channel 107.

[0027] First communication area 1111 includes a first partition 1112, a second partition 1113, and a third partition 1114. First channel 102 communicates with first partition 1112, second channel 105 communicates with third partition 1114, and second partition 1113 connects first and third partitions 1112 and 1114. The arrangement of first and third partitions 1112 and 1114 makes the structure of main body 11 more compact and more suitable for interfacing with external components. One-way valve spool 15 is located in second partition 1113 or in third channel 103, with second port 113 serving as the port for third channel 103.

[0028] The flow path switching device 100 includes a first closure member 1115 and a second closure member 1116. A straight extension of the first channel 102 passes through the first partition 1112 and the first closure member 1115, and a straight extension of the second channel 105 passes through the third partition 1114 and the second closure member 1116. The first closure member 1115 and the second closure member 1116 are assembled and fixed to the main body 11 and sealed. The main body 11 defines a channel communicating with the first channel 102, and the main body 11 defines a channel communicating with the second channel 105. The first closure member 1115 and the second closure member 1116 are assembled and fixed to the main body 11, for example, by threaded connection. When machining the main body 11, drilling can be performed on the circumferential side to form the first partition and the first channel 102, and the third partition and the second channel 105, thereby facilitating machining of the main body structure.

[0029] Continue to refer to Figure 8 and Figure 9 The main body 11 is provided with a second communicating area 1117, the second communicating area 1117 is connected to at least three branch channels, the second channel 105 is one of the at least three branch channels, one of the at least three branch channels is defined as the fourth channel 101, and the flow path switching device 100 includes a valve core component 12, at least part of which is located in the fourth channel 101.

[0030] Since the flow switching device is connected to other components of the heat pump system, it only needs to connect the third interface 111, the first interface 112, the second interface 113, the fourth interface 114, the fifth interface 115, and the sixth interface 116, which is convenient for connection to the system. Compared with the heat pump system connected by more pipes, it reduces the risk of long-term shaking and vibration affecting the precision performance of the system, thereby improving the stability of the system. Moreover, when the flow switching device is fixed, for example, in a moving state, the external motion state has little effect on the shaking of the flow switching device, which is conducive to maintaining the stability and reliability of the system using the flow switching device. In addition, since the system is filled with refrigerant, the smaller number of connection interfaces can improve the safety of the system and reduce the risk of leakage of refrigerant during long-term shaking and vibration. The flow switching device is easy to supply as an integral part and can be easily stored in the workshop, which reduces the number of shelves for storing various parts and reduces the manufacturing cost of the flow switching device.

[0031] As an implementation method, refer to Figure 10 , Figure 10The figure shows a schematic diagram of the cooperation of the one-way valve core 15'. The one-way valve core 15 includes a core body 151, a spring member 152, and a limit member 153. The main body 11 includes a constricted wall portion 1118. One side of the core body 151 cooperates with the constricted wall portion 1118, and the other side of the core body 151 can abut against the limit member 153. One end of the spring member 152 abuts against the core body 151, and the other end of the spring member 152 abuts against the limit member 153. The core body 151 can reciprocate relative to the limit member 153.

[0032] The first channel 102 communicates with the area between the first port 112 and the constricted wall portion 1118; the second channel 105 communicates with the area between the first port 112 and the constricted wall portion 1118, or the second channel 105 communicates with the area between the second port 113 and the constricted wall portion 1118. In this way, after entering through the first port 112, the fluid can exit through the first channel 102, through the one-way valve core, and then exit through the second port, or through the second channel 105, thereby achieving the fluid switching requirements of the system.

[0033] As another embodiment, refer to Figure 11 , Figure 11 The figure shows a schematic diagram of the cooperation of the one-way valve spool 15", which includes a core body 151, a spring member 152, a first limiting member 154, and a second limiting member 155. The main body 11 has a first limiting groove 1119a and a second limiting groove 1119b. At least a portion of the first limiting member 154 extends into the first limiting groove 1119a, and at least a portion of the second limiting member 155 extends into the second limiting groove 1119b. One side of the core body 151 abuts against the first limiting member 154, and the other side of the core body 151 abuts against the second limiting member 155. One end of the spring member 152 abuts against the core body 151, and the other end of the spring member 152 abuts against the second limiting member 155. The core body 151 can reciprocate relative to the second limiting member 155.

[0034] The first limiting member 154 faces the first interface 112, and the second limiting member 155 faces away from the second interface 113; the first channel 102 is connected between the first interface 112 and the first limiting member 154; the second channel 105 is connected between the first interface 112 and the first limiting member 154 or between the second interface 113 and the second limiting member 155.

[0035] It should be clear that the above-mentioned implementation of the one-way valve core is only for illustration and does not limit its structure to that shown in the drawings.

[0036] The flow path switching device 100 includes a gas-liquid separator 17, which can be fixed to the main body 11 by welding, bolting, screwing, threading, or other methods. The gas-liquid separator 17 is connected to the fifth interface 115 and the sixth interface 116. The first channel 102 is connected to the inlet 171, outlet 172, and inner cavity 173 of the gas-liquid separator 17. The fifth channel 104 can include the inlet 171, outlet 172, and inner cavity 173 of the gas-liquid separator 17. After the flow path switching device 100 includes the gas-liquid separator 17, the overall structure is more compact. It is connected to the system through the third interface 111, the first interface 112, the second interface 113, the fourth interface 114, the fifth interface 115, and the sixth interface 116, realizing the switching of the flow path of the heat pump system in the cooling mode, the heating mode, and the dehumidification mode.

[0037] When the heat pump system is in cooling mode, the flow path switching device is in the first working state, the fourth interface 114 is the fluid inlet, the third interface 111 is the fluid outlet, the first interface 112 is the fluid inlet, the fifth interface 115 is the fluid outlet, the sixth interface 116 is the fluid inlet, and the second interface 113 is the fluid outlet.

[0038] When the heat pump system is in heating mode, the flow path switching device is in the second working state, the fourth interface 114 is the fluid inlet, the third interface 111 is the fluid outlet, the first interface 112 is the fluid inlet, and the fifth interface 115 is the fluid outlet.

[0039] When the heat pump system is in dehumidification mode, the flow path switching device is in the third working state, the fourth interface 114 is the fluid inlet, the second interface 113 is the fluid outlet, the sixth interface 116 is the fluid inlet, and the fifth interface 115 is the fluid outlet.

[0040] Once the system is connected to the six interfaces, fluid flow paths can be switched within the flow path switching device. Flow path control is achieved simply by motor-controlled control of the individual valve cores, such as valve core component 12, first solenoid valve core assembly 13, and second solenoid valve core assembly 14, simplifying system control. Because six interfaces are used for external connections, leak detection is easily possible in extreme situations, such as leaks. The centralized leak detection interfaces within the flow path switching device facilitate subsequent repairs.

[0041] exist Figure 1-Figure 7In the illustrated embodiment, the main body 11 includes a first portion 1101 and a second portion 1102. The first portion 1101 and the second portion 1102 may be fixed by bolts or screws, or may be fixed by welding, or other methods. The first portion 1101 is provided with a valve core component 12, the first portion 1101 is provided with a fourth channel 101, and a mounting hole is provided on the top side 117 of the first portion 1101. At least a portion of the valve core component 12 is inserted from the top side 117 of the first portion 1101. The second portion 1102 is provided with a first solenoid valve core assembly 13 and a second solenoid valve core assembly 14. The second portion 1102 is provided with a second interface 113, a sixth interface 116, a fifth interface 115, and a first interface 112.

[0042] The first part 1101 and the second part 1102 are fixed by bolts or screws 18 or other means. The first part 1101 and the second part 1102 are set separately. There are more options for the flow channel design inside the main body 11, and the positions of each interface can have more variations to meet the installation position of each interface, making the flow path switching device more convenient to connect in the system and meeting the position requirements of other components in the system.

[0043] The flow path switching device 100 includes a first connector 20. At least a portion of the first connector 20 is located in the first portion 1101, and at least a portion of the first connector 20 is located in the second portion 1102. The first connector 20 is sealed to the first portion 1101, and the first connector 20 is sealed to the second portion 1102. The second channel 105 connects the second port 113 and the fourth port 114, and the second channel 105 passes through the first connector 20. The provision of the first connector 20 allows for precise matching of the channels in the first portion 1101 and the second portion 1102, reducing the risk of leakage at the connection.

[0044] Reference Figure 6 and Figure 7 The fourth channel 101 connecting the third interface 111 and the fourth interface 114 includes a first sub-path 101a and a second sub-path 101b. Since the valve core component 12 includes a first sub-valve core portion 12a and a second sub-valve core portion 12b, the fourth channel 101 is similar to having two branches, one of which is the first sub-path 101a. The fluid passes through the first sub-path 101a to achieve the throttling and pressure reduction process, and then leaves from the third interface 111; the other is the second sub-path 101b. The fluid passes through the second sub-path 101b, the second sub-valve core portion 12b is in an open state, the fluid passes through the second sub-path 101b, and then leaves from the third interface 111.

[0045] The valve core component 12 may include a first sub-valve core portion 12a and a second sub-valve core portion 12b. The first sub-valve core portion 12a may be an electronic expansion valve valve core, and the second sub-valve core portion 12b may be a solenoid valve valve core assembly. The valve core component 12 includes a first working state and a second working state. In the first working state, the first sub-valve core portion 12a is in throttling, and the first sub-path 101a is connected; in the second working state, the first sub-valve core portion 12b is in a closed state, and the second sub-valve core portion 12b is in an open state, the first sub-path 101a is closed, and the second sub-path 101b is connected.

[0046] When the valve core component 12 needs to be throttled, the first sub-valve core portion 12a is controlled to put the first sub-valve core portion 12a into a throttling effect; when the valve core component 12 needs to be conducted, the first sub-valve core portion 12a is controlled to put the first sub-valve core portion 12a into a closed state, and the second sub-valve core portion 12b is opened to put the fluid into a conducting state.

[0047] The second portion 1102 and the gas-liquid separator 17 can be fixed by bolts or screws 19. Of course, the second portion 1102 and the gas-liquid separator 17 can also be fixed by welding or threaded connection. The second portion 1102 and the gas-liquid separator 17 are assembled and fixed, and the fifth port 115 and the sixth port 116 of the second portion 1102 are connected to the inlet and outlet of the gas-liquid separator 17.

[0048] The flow path switching device 100 includes a second connector 21. At least a portion of the second connector 21 extends into the second portion 1102. At least a portion of the second connector 21 extends into the gas-liquid separator 17. The second connector 21 is sealed against the second portion 1102. The second connector 21 is sealed against the gas-liquid separator 17. The provision of the second connector 21 enhances the precision of the fluid flow after the gas-liquid separator is connected to the second portion, and is particularly suitable for assembly of the gas-liquid separator 17 and the second portion 1102 using screws, bolts, or threads.

[0049] Of course, as another embodiment, the valve core component 12 is a large-diameter electronic expansion valve core, and the valve core component has a first working state and a second working state. In the first working state, the valve core component is in throttling; in the second working state, the valve core component is at the maximum opening. The function of the large-diameter electronic expansion valve core is to control the electronic expansion valve when the valve core component 12 needs to throttle, so that the electronic expansion valve is in a throttling effect; when the valve core component 12 needs to be turned on, the electronic expansion valve is opened to the maximum opening, so that the electronic expansion valve is in a large-diameter conduction state. At this time, the fourth channel 101 does not have a path in the form of two branches similar to the above embodiment. A large-diameter electronic expansion valve core means that when it is in the conduction state, the flow rate is large, which meets the needs of the system.

[0050] As another embodiment, the main body 11 is an integral structure, and the main body 11 is processed as a whole. The main body 11 can be obtained by injection molding, casting, machining, forging, etc. The main body 11 is an integral structure, which reduces the connection points for docking and further reduces the risk of leakage. For example, the main body 11 is a machined product, and the main body 11 is a cube-like structure, which is convenient for machining operations. The main body 11 has different side portions, and the main body 11 has a top side portion 117 and a peripheral side portion 118. The valve core component 12, the first solenoid valve core assembly 13, and the second solenoid valve core assembly 14 are inserted into the top side portion 117. The peripheral side portion 118 is provided with a third interface 111, a fourth interface 114, a second interface 113, and a sixth interface 116. The third interface 111 and the fourth interface 114 are located at different peripheral side portions 118. The valve core component 12, the first solenoid valve core assembly 13, and the second solenoid valve core assembly 14 are inserted into the interior of the main body 11 from the top side 117, and the third interface 111, the fourth interface 114, the second interface 113 and the sixth interface 116 are located on the peripheral side 118, which is conducive to the precise control of the fluid and improves the stability of the system. It is also beneficial to the service life of the valve core component 12, the first solenoid valve core assembly 13, and the second solenoid valve core assembly 14, and improves the safety of the system.

[0051] As another embodiment, the flow path switching device may further include a main body 11 and a valve core component 12, a first solenoid valve core assembly 13, a second solenoid valve core assembly 14, and a one-way valve core 15. The main body 11 includes a third interface 111, a first interface 112, a second interface 113, a fourth interface 114, a fifth interface 115, a sixth interface 116, a seventh interface, and an eighth interface. The seventh interface and the eighth interface can be used to communicate with the inlet and outlet of the gas-liquid separator in the above embodiment.

[0052] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. For example, regarding the directional definitions of “front”, “back”, “left”, “right”, “up” and “down”, although this specification has described the present invention in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be combined, modified or replaced by each other, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A flow path switching device, comprising a first solenoid valve core assembly and a main body, wherein the main body comprises a first channel, and at least a portion of the first solenoid valve core assembly is located in the first channel; Its characteristics are: The flow path switching device further includes a second solenoid valve core assembly, the main body includes a second channel, and at least a portion of the second solenoid valve core assembly is located in the second channel; The main body is provided with a first communication area, the first communication area being connected to at least four branch channels, the first channel being one of the at least four branch channels, the second channel being one of the at least four branch channels; one of the at least four branch channels being defined as a third channel; The first connected area has a first partition, a second partition, and a third partition, the first channel is connected to the first partition, the second channel is connected to the third partition, and the second partition is connected to the first partition and the third partition; The flow path switching device further includes a one-way valve core, and the one-way valve core is located in the second partition or the one-way valve core is located in the third channel.

2. The flow path switching device according to claim 1, characterized in that: The flow path switching device has a first closure member and a second closure member, a straight extension line of the first channel passes through the first partition and the first closure member, and a straight extension line of the second channel passes through the third partition and the second closure member; the first closure member and the second closure member are assembled, fixed and sealed with the main body.

3. The flow path switching device according to claim 1, wherein: The main body is provided with a second communicating area, the second communicating area is connected to at least three branch channels, the second channel is one of the at least three branch channels, one of the at least three branch channels is defined as a fourth channel, the flow path switching device includes a valve core component, the valve core component includes an electronic expansion valve core, and at least a portion of the valve core component is located in the fourth channel.

4. The flow path switching device according to claim 2, wherein: The main body is provided with a second communicating area, the second communicating area is connected to at least three branch channels, the second channel is one of the at least three branch channels, one of the at least three branch channels is defined as a fourth channel, the flow path switching device includes a valve core component, the valve core component includes an electronic expansion valve core, and at least a portion of the valve core component is located in the fourth channel.

5. The flow path switching device according to any one of claims 1 to 4, characterized in that: The main body has a first interface and a second interface, and the second interface is a port of the third channel; The one-way valve core includes a core body, a spring member, and a limit member. The main body includes a constricted wall portion. One side of the core body cooperates with the constricted wall portion, and the other side of the core body can abut against the limit member. One end of the spring member abuts against the core body, and the other end of the spring member abuts against the limit member. The core body can reciprocate relative to the limit member. The first channel is connected to the area between the first interface and the necked wall portion; The second channel is connected to the area between the first interface and the necked wall portion, or the second channel is connected to the area between the second interface and the necked wall portion.

6. The flow path switching device according to any one of claims 1 to 4, characterized in that: The main body has a first interface and a second interface, and the second interface is a port of the third channel; The one-way valve core includes a core body, a spring member, a first limiting member, and a second limiting member. The main body has a first limiting groove and a second limiting groove. At least a portion of the first limiting member extends into the first limiting groove, and at least a portion of the second limiting member extends into the second limiting groove. One side of the core body abuts against the first limiting member, and the other side of the core body abuts against the second limiting member. One end of the spring member abuts against the core body, and the other end of the spring member abuts against the second limiting member. The core body can reciprocate relative to the second limiting member. The first limiting member faces the first interface, and the second limiting member faces away from the second interface; the first channel is connected between the first interface and the first limiting member; the second channel is connected between the first interface and the first limiting member or the second channel is connected between the second interface and the second limiting member.

7. The flow path switching device according to claim 1, wherein: The main body has a first interface, a second interface, a third interface, a fourth interface, a fifth interface and a sixth interface. The main body has a first channel, a second channel, a third channel, a fourth channel and a fifth channel. The fourth channel connects the third interface with the fourth interface, the first channel connects the first interface with the fifth interface, the third channel connects the first interface with the second interface, the fifth channel connects the fifth interface with the sixth interface, and the second channel connects the second interface with the fourth interface. The main body is connected to a gas-liquid separator, and the inner cavity of the gas-liquid separator is connected to the first channel.

8. The flow path switching device according to any one of claims 1 to 4 and 7, characterized in that: The main body includes a top side portion, which is provided with a first installation cavity and a second installation cavity. At least a portion of the first solenoid valve core assembly is inserted into the first installation cavity from the top side portion, and at least a portion of the second solenoid valve core assembly is inserted into the second installation cavity from the top side portion.

9. The flow path switching device according to claim 5, characterized in that: The main body includes a top side portion, which is provided with a first installation cavity and a second installation cavity. At least a portion of the first solenoid valve core assembly is inserted into the first installation cavity from the top side portion, and at least a portion of the second solenoid valve core assembly is inserted into the second installation cavity from the top side portion.

10. The flow path switching device according to claim 6, wherein: The main body includes a top side portion, which is provided with a first installation cavity and a second installation cavity. At least a portion of the first solenoid valve core assembly is inserted into the first installation cavity from the top side portion, and at least a portion of the second solenoid valve core assembly is inserted into the second installation cavity from the top side portion.

11. The flow path switching device according to any one of claims 1 to 4, characterized in that: The main body has a first interface, a second interface, a third interface, a fourth interface, a fifth interface and a sixth interface; The main body is an integral structure, and the main body has a circumferential side portion, and the circumferential side portion is provided with the third interface, the fourth interface, the second interface and the sixth interface, and the third interface and the fourth interface are located in different circumferential side portions; or the main body includes a first part and a second part, and the first part is provided with the third interface and the fourth interface, and the flow switching device includes a valve core component, the first part is provided with the valve core component, and the second part is provided with the first solenoid valve core assembly, the second solenoid valve core assembly, and the one-way valve core, and the first part and the second part are fixed with bolts or screws or welded.

12. The flow path switching device according to claim 1, wherein: The main body has a first interface, a second interface, a third interface, a fourth interface, a fifth interface and a sixth interface, and the main body has a fourth channel and a fifth channel, the fourth channel connects the third interface with the fourth interface, the first channel connects the first interface with the fifth interface, the third channel connects the first interface with the second interface, the fifth channel connects the fifth interface with the sixth interface, and the second channel connects the second interface with the fourth interface; the flow path switching device has a gas-liquid separator, the gas-liquid separator is connected to the fifth interface and the sixth interface, and the first channel passes through the valve seat corresponding to the valve core assembly of the first solenoid valve; The main body is an integral structure, and has a peripheral side portion, and the peripheral side portion is provided with the third interface, the fourth interface, the second interface, and the sixth interface, the third interface and the fourth interface are located on different peripheral sides, and the fourth channel, the third channel, and the second channel are located in the main body; The flow path switching device has a first working state, a second working state and a third working state. When the flow path switching device is in the first working state, the fourth interface is a fluid inlet, the third interface is a fluid outlet, the first interface is a fluid inlet, the fifth interface is a fluid outlet, the sixth interface is a fluid inlet, and the second interface is a fluid outlet; When the flow path switching device is in the second working state, the fourth interface is a fluid inlet, the third interface is a fluid outlet, the first interface is a fluid inlet, and the fifth interface is a fluid outlet; When the flow path switching device is in the third working state, the fourth interface is a fluid inlet, the second interface is a fluid outlet, the sixth interface is a fluid inlet, and the fifth interface is a fluid outlet; The flow path switching device includes a valve core component, the valve core component includes a first sub-valve core portion and a second sub-valve core portion, the first sub-valve core portion is an electronic expansion valve valve core, the second sub-valve core portion is a solenoid valve valve core assembly, the fourth channel includes a first sub-path and a second sub-path, The valve core component includes a first working state and a second working state. In the first working state of the valve core component, the first sub-valve core part is in throttling and the first sub-path is connected; in the second working state of the valve core component, the first sub-valve core part is in a closed state, the second sub-valve core part is in an open state, the first sub-path is closed, and the second sub-path is connected; or the valve core component is a large-diameter electronic expansion valve core, and the valve core component has a first working state and a second working state. In the first working state of the valve core component, the valve core component is in throttling; in the second working state of the valve core component, the valve core component is at the maximum opening.

13. The flow path switching device according to claim 1, wherein: The main body has a first interface, a second interface, a third interface, a fourth interface, a fifth interface and a sixth interface, and the main body has a fourth channel and a fifth channel, the fourth channel connects the third interface with the fourth interface, the first channel connects the first interface with the fifth interface, the third channel connects the first interface with the second interface, the fifth channel connects the fifth interface with the sixth interface, and the second channel connects the second interface with the fourth interface; the flow path switching device has a gas-liquid separator, the gas-liquid separator is connected to the fifth interface and the sixth interface, and the first channel passes through the valve seat corresponding to the valve core assembly of the first solenoid valve; The main body includes a first part and a second part, the first part is provided with the third interface and the fourth interface, the flow path switching device includes a valve core component, the first part is provided with the valve core component, and the second part is provided with the first solenoid valve core assembly, the second solenoid valve core assembly, and the one-way valve core, and the first part and the second part are fixed with bolts, screws, or welding; The second part is fixed to the gas-liquid separator by bolts or screws or threaded connection or welding. The flow path switching device has a first connecting member and a second connecting member. At least a portion of the first connecting member is located in the first part, and at least a portion of the first connecting member is located in the second part. The first connecting member is sealed with the first part, and the first connecting member is sealed with the second part. The second channel connects the second interface and the fourth interface, and the second channel passes through the first connecting member. At least a portion of the second connecting member extends into the second part, and at least a portion of the second connecting member extends into the gas-liquid separator. The second connecting member is sealed with the second part, and the second connecting member is sealed with the gas-liquid separator. The flow path switching device has a first working state, a second working state and a third working state. When the flow path switching device is in the first working state, the fourth interface is a fluid inlet, the third interface is a fluid outlet, the first interface is a fluid inlet, the fifth interface is a fluid outlet, the sixth interface is a fluid inlet, and the second interface is a fluid outlet; When the flow path switching device is in the second working state, the fourth interface is a fluid inlet, the third interface is a fluid outlet, the first interface is a fluid inlet, and the fifth interface is a fluid outlet; When the flow path switching device is in the third working state, the fourth interface is a fluid inlet, the second interface is a fluid outlet, the sixth interface is a fluid inlet, and the fifth interface is a fluid outlet; The valve core component includes a first sub-valve core portion and a second sub-valve core portion, the first sub-valve core portion is an electronic expansion valve core, the second sub-valve core portion is a solenoid valve core assembly, and the fourth channel includes a first sub-path and a second sub-path. The valve core component includes a first working state and a second working state. In the first working state of the valve core component, the first sub-valve core part is in throttling and the first sub-path is connected; in the second working state of the valve core component, the first sub-valve core part is in a closed state, the second sub-valve core part is in an open state, the first sub-path is closed, and the second sub-path is connected; or the valve core component is a large-diameter electronic expansion valve core, and the valve core component has a first working state and a second working state. In the first working state of the valve core component, the valve core component is in throttling; in the second working state of the valve core component, the valve core component is at the maximum opening.

Images