Reversing valve and air conditioning system

Abstract

The utility model discloses a kind of reversing valve and air conditioning system, reversing valve includes: valve body, valve core subassembly and drive assembly, valve body forms valve cavity and with the import and export of valve cavity communication, the number of import and export is not less than three, multiple import and export can be communicated to form multiple different communication channels by valve cavity, valve core subassembly is movably arranged in valve cavity, to cut off or conduct at least part of communication channel, to make reversing valve switch between at least first operating mode and second operating mode, drive assembly is arranged in valve cavity and is used to drive valve core subassembly movement, drive assembly includes at least one driving piece, at least one driving piece is shape memory alloy piece, one end of driving piece is connected with valve core subassembly and other end is connected with valve body.According to the reversing valve of the utility model, shape memory alloy piece is compared with the structure of electric drive mechanism Simple, and production and use cost are lower, so as to reduce the cost of drive assembly and improve the reliability of drive assembly.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment technology, and in particular to a reversing valve and an air conditioning system. Background Technology

[0002] As people's living standards improve, air conditioners have gradually entered thousands of households, becoming an important household appliance in production and daily life. Among the components of an air conditioning system, the reliability of the valve used to control the flow of refrigerant is particularly crucial. However, valves in related technologies have complex structures, high production costs, and low reliability. Therefore, improvements are needed. Utility Model Content

[0003] The first aspect of this utility model proposes a reversing valve, which has the advantages of low production cost and high reliability.

[0004] A reversing valve according to a first aspect of the present invention includes: a valve body forming a valve cavity and an inlet / outlet communicating with the valve cavity, wherein the number of the inlet / outlet is not less than three, and the plurality of the inlet / outlet can be connected through the valve cavity to form a plurality of different communication channels; and a valve core assembly movably disposed within the valve cavity to cut off or open at least part of the communication channels, so that the reversing valve switches between at least a first operating mode and a second operating mode.

[0005] A drive assembly is disposed within the valve cavity and is used to drive the valve core assembly to move. The drive assembly includes at least one drive element, which is a shape memory alloy component. One end of the drive element is connected to the valve core assembly and the other end is connected to the valve body.

[0006] According to the first aspect of the present invention, in the directional valve, at least one drive component is a shape memory alloy component. Compared with the electric drive mechanism, the shape memory alloy component has a simpler structure and lower production and usage costs. It can better simplify the structure of the drive component and reduce the failure rate of the drive component, thereby reducing the cost of the drive component and improving the reliability of the drive component.

[0007] According to some embodiments of the present invention, the drive assembly includes a plurality of drive members, the plurality of drive members including a first drive member and a second drive member, the first drive member being a return spring, the second drive member being a shape memory alloy member, the first drive member and the second drive member being used to drive the valve core assembly to move in opposite directions; and / or, the shape memory alloy member being configured to stretch or shorten by temperature changes of the refrigerant flowing through the reversing valve.

[0008] According to some embodiments of the present invention, the plurality of inlets and outlets include a first inlet and outlet, a second inlet and outlet, and a side inlet and outlet. The first inlet and outlet and the second inlet and outlet are respectively disposed on opposite sides of the valve body along a first direction. The side inlet and outlet are disposed on the outer peripheral wall of the valve body. The driving assembly is used to drive the valve core assembly to move along the first direction to control the opening and closing of at least one of the first inlet and outlet and the second inlet and outlet.

[0009] According to some embodiments of the present invention, the driving member is spiral-shaped, and the center line of the driving member extends along the first direction.

[0010] According to some embodiments of the present invention, the driving component is sleeved on the outer periphery of the valve core assembly.

[0011] According to some embodiments of the present invention, a first limiting block is provided on the outer peripheral surface of the valve core assembly, a second limiting block is provided on the inner peripheral surface of the valve cavity, the driving member is disposed between the first limiting block and the second limiting block, one end of the driving member is connected to the first limiting block, and the other end of the driving member is connected to the second limiting block.

[0012] According to some embodiments of the present invention, the driving assembly includes at least one first driving member and at least one second driving member. The number of first driving members and second driving members are the same and they correspond one-to-one. The first driving member and the corresponding second driving member constitute a group of driving members. The first driving members and the second driving members in the same group of driving members are arranged along the first direction. The first driving members and the second driving members in the same group of driving members are used to drive the valve core assembly to move in opposite directions along the first direction.

[0013] According to some embodiments of the present invention, the valve core assembly includes one valve core, and the driving member group is provided in a set, wherein the first driving member and the second driving member are used to drive the valve core to move in opposite directions along a first direction; or, the valve core assembly includes two valve cores, the two valve cores are spaced apart along the first direction and move independently of each other, the driving member group is provided in two sets and corresponds one-to-one with the two valve cores, and the first driving member and the second driving member of each set of the driving member group are used to drive the corresponding valve core to move in opposite directions along the first direction; or, the valve core assembly includes two valve cores, the two valve cores are arranged and connected along the first direction, the driving member group is provided in a set, one end of the first driving member and one end of the second driving member are both connected to the valve body, the other end of the first driving member is connected to one of the valve cores, and the other end of the second driving member is connected to the other valve core, wherein the first driving member and the second driving member are used to drive the two valve cores to move synchronously in opposite directions along the first direction.

[0014] According to some embodiments of the present invention, the valve core assembly includes a valve core, which is movable along a first direction to control the opening and closing of the first inlet and outlet and to control the opening and closing of the second inlet and outlet, and a side inlet and outlet is provided; in the first operating mode, the valve core opens the first inlet and outlet and closes the second inlet and outlet, and the first inlet and outlet are connected to the side inlet and outlet; in the second operating mode, the valve core closes the first inlet and outlet and opens the second inlet and outlet, and the second inlet and outlet are connected to the side inlet and outlet.

[0015] According to some embodiments of this utility model, two valve chambers arranged along a first direction are formed within the valve body, namely a first valve chamber and a second valve chamber. A connecting cavity is also formed within the valve body, located between the first valve chamber and the second valve chamber and connecting the first valve chamber and the second valve chamber. The connecting cavity has a first connecting port connected to the first valve chamber and a second connecting port connected to the second valve chamber. Multiple side inlets and outlets are provided, including a first side inlet and outlet and a second side inlet and outlet. The first inlet and outlet and the first side inlet and outlet are disposed on the wall of the first valve chamber. The second inlet and outlet and the second side inlet and outlet are disposed on the wall of the second valve cavity; the valve core assembly includes two valve cores, namely a first valve core and a second valve core. The first valve core is movably disposed in the first valve cavity along a first direction to control the connection and disconnection between the first side inlet and outlet and the first inlet and outlet and to control the connection and disconnection between the first side inlet and outlet and the communicating cavity. The second valve core is movably disposed in the second valve cavity along the first direction to control the connection and disconnection between the second side inlet and outlet and the second inlet and outlet and to control the connection and disconnection between the second side inlet and outlet and the communicating cavity.

[0016] According to some embodiments of the present invention, the first valve core is used to control the opening and closing of the first inlet and outlet and to control the opening and closing of the first connecting port, and the second valve core is used to control the opening and closing of the second inlet and outlet and to control the opening and closing of the second connecting port.

[0017] According to some embodiments of this utility model, in the first working mode, the first valve core closes the first inlet and outlet and opens the first connecting port; the second valve core closes the second inlet and outlet and opens the second connecting port, and the first side inlet and outlet are connected to the second side inlet and outlet through the connecting cavity; in the second working mode, the first valve core opens the first inlet and outlet and closes the first connecting port, and the first side inlet and outlet are connected to the first inlet and outlet; the second valve core opens the second inlet and outlet and closes the second connecting port, and the second side inlet and outlet are connected to the second inlet and outlet.

[0018] According to some embodiments of this utility model, the side inlet and outlet further includes a third side inlet and outlet, which is disposed on the side wall of the communicating cavity and communicates with the communicating cavity; in the first working mode, the first valve core opens the first inlet and outlet and closes the first communicating port; the second valve core closes the second inlet and outlet and opens the second communicating port, the first side inlet and outlet communicates with the first inlet and outlet, and the third side inlet and outlet communicates with the second side inlet and outlet through the communicating cavity; in the second working mode, the first valve core closes the first inlet and outlet and opens the first communicating port; the second valve core opens the second inlet and outlet and closes the second communicating port, the first side inlet and outlet communicates with the third side inlet and outlet through the communicating cavity, and the second side inlet and outlet communicates with the second inlet and outlet.

[0019] According to some embodiments of the present invention, the communicating cavity includes a first sub-cavity and a second sub-cavity arranged along a first direction. The first valve cavity communicates with the second valve cavity through the first sub-cavity and the second sub-cavity in sequence. One end of the first sub-cavity connected to the first valve cavity forms the first communicating port, and one end of the first sub-cavity connected to the second sub-cavity forms the third communicating port. A slider is provided in the first sub-cavity. The slider is spaced apart from the first communicating port. The slider moves between a first position and a second position along the first direction. In the first position, the slider opens the third communicating port. In the second position, the slider closes the third communicating port. The third side inlet / outlet is provided on the wall of the second sub-cavity and communicates with the second sub-cavity.

[0020] According to some embodiments of the present invention, the slider is configured to be driven by the fluid pressure difference between the first valve chamber and the second sub-chamber.

[0021] According to some embodiments of the present invention, the first valve core is connected to the second valve core or moves independently of each other.

[0022] According to some embodiments of the present invention, the first valve core is connected to the second valve core, and the second valve core is movably disposed on the first valve core relative to the first valve core along a first direction. The reversing valve includes an adjusting spring, one end of which is connected to the first valve core and the other end of which is connected to the second valve core. The adjusting spring is used to drive the first valve core and the second valve core to slide along the first direction toward directions that are far apart from each other.

[0023] According to some embodiments of the present invention, the first valve chamber includes a third sub-chamber and a fourth sub-chamber arranged and connected along a first direction. The fourth sub-chamber is connected between the third sub-chamber and the connecting chamber. The plurality of side inlets and outlets also include a third side inlet and outlet and a fourth side inlet and outlet. The third side inlet and outlet are disposed on the wall of the connecting chamber and are connected to the connecting chamber. The fourth side inlet and outlet and the first inlet and outlet are disposed on the wall of the third sub-chamber. The first inlet and outlet are connected to the fourth side inlet and outlet through the third sub-chamber. The first side inlet and outlet are disposed on the wall of the fourth sub-chamber and are connected to the fourth sub-chamber. One end of the fourth sub-chamber connected to the third sub-chamber forms a fourth connecting port. The first valve core is used to control the opening and closing of the first connecting port and to control the fourth connecting port. The second valve core is used to control the opening and closing of the second inlet and outlet and the second connecting port; in the first working mode, the first valve core opens the first connecting port and closes the fourth connecting port, the second valve core opens the second inlet and outlet and closes the second connecting port, the first side inlet and outlet are connected to the third side inlet and outlet through the connecting cavity, and the second side inlet and outlet are connected to the second inlet and outlet; in the second working mode, the first valve core closes the first connecting port and opens the fourth connecting port, the second valve core closes the second inlet and outlet and opens the second connecting port, the first side inlet and outlet are connected to the fourth side inlet and outlet, and the second side inlet and outlet are connected to the third side inlet and outlet through the connecting cavity.

[0024] The second aspect of this utility model proposes an air conditioning system.

[0025] An air conditioning system according to a second aspect of the present invention includes: a compressor, a first heat exchanger, a second heat exchanger, a throttling component, a four-way valve, and the aforementioned reversing valve. The compressor's exhaust port, the compressor's intake port, the second heat exchanger, and the reversing valve are respectively connected to the four ports of the four-way valve. The throttling component is connected between the first heat exchanger and the second heat exchanger. The first heat exchanger includes multiple heat exchange branches. A portion of the inlet and outlet of the reversing valve is connected to the first heat exchanger and is used to change the refrigerant flow path within the first heat exchanger. The air conditioning system has a first operating mode and a second operating mode. In the first operating mode, the reversing valve is in the first operating mode to connect at least a portion of the heat exchange branches in series. In the second operating mode, the reversing valve is in the second operating mode to connect multiple heat exchange branches in parallel.

[0026] According to the air conditioning system of the second aspect of this utility model, at least one driving component is a shape memory alloy component. Compared to an electric drive mechanism, the shape memory alloy component has a simpler structure and lower production and usage costs. This simplifies the structure of the drive assembly and reduces its failure rate, thereby reducing the cost and improving its reliability. Furthermore, the reversing valve can automatically switch between a first and second operating mode based on heating or cooling modes. This simplifies the structure of the air conditioning system and improves its performance.

[0027] According to some embodiments of this utility model, the reversing valve is connected to a first refrigerant inlet / outlet pipe, a second refrigerant inlet / outlet pipe, and a third refrigerant inlet / outlet pipe. The first refrigerant inlet / outlet pipe, the second refrigerant inlet / outlet pipe, and the third refrigerant inlet / outlet pipe are respectively connected to one of the inlet / outlet pipes. The multiple heat exchange branches include at least one first heat exchange branch and at least one second heat exchange branch. The first end of the first heat exchange branch is connected to the second refrigerant inlet / outlet pipe, and the second end of the first heat exchange branch and the first end of the second heat exchange branch are connected to the third refrigerant inlet / outlet pipe. In the first operating mode, the first heat exchange branch and the second heat exchange branch are connected in series. The second end of the second heat exchange branch is connected to the second refrigerant inlet / outlet pipe; or, the second end of the second heat exchange branch is connected to the second refrigerant inlet / outlet pipe through the reversing valve. The reversing valve can connect or disconnect the second heat exchange branch and the second refrigerant inlet / outlet pipe. The inlet / outlet connected to the second end of the second heat exchange branch is different from the inlet / outlet connected to the refrigerant inlet / outlet pipe.

[0028] According to some embodiments of this utility model, the air conditioning system further includes a one-way valve. The side inlet / outlet is connected to one end of the first refrigerant inlet / outlet pipe, the other end of the first refrigerant inlet / outlet pipe is connected to one interface of the four-way valve, the first inlet / outlet is connected to one end of the second refrigerant inlet / outlet pipe, the second inlet / outlet is connected to one end of the third refrigerant inlet / outlet pipe, the first end of the first heat exchange branch and the second end of the second heat exchange branch are connected to the second refrigerant inlet / outlet pipe, the second end of the first heat exchange branch is connected to the third refrigerant inlet / outlet pipe, the first end of the second heat exchange branch is connected to the other end of the third refrigerant inlet / outlet pipe, the connection point between the first heat exchange branch and the first refrigerant inlet / outlet pipe is the first connection point, the connection point between the second heat exchange branch and the first refrigerant inlet / outlet pipe is the second connection point, the first connection point is located between the second connection point and the reversing valve, and the one-way valve is located on the second refrigerant inlet / outlet pipe and located at the... Between the second connection point and the adjacent first connection point, the one-way valve is unidirectionally open in the direction closer to the reversing valve, and the other end of the second refrigerant inlet / outlet pipe is connected to the throttling component; in the first operating mode, the side inlet / outlet is connected to the exhaust port of the compressor, the second heat exchanger is connected to the suction port of the compressor, a first connecting channel is formed between the side inlet / outlet and the first inlet / outlet, the side inlet / outlet is the inlet of the first connecting channel, the first inlet / outlet is the outlet of the first connecting channel, and the one-way valve is in the closed state; in the second operating mode, the side inlet / outlet is connected to the suction port of the compressor, the second heat exchanger is connected to the exhaust port of the compressor, a second connecting channel is formed between the side inlet / outlet and the second inlet / outlet, the second inlet / outlet is the inlet of the first connecting channel, the side inlet / outlet is the outlet of the first connecting channel, and the one-way valve is in the open state.

[0029] According to some embodiments of the present invention, the third refrigerant inlet / outlet pipe includes a distributor, which has a main port and multiple distribution ports that are interconnected. The main port is connected to one of the inlet / outlet ports, and the multiple distribution ports are connected to the same number of multiple heat exchange branches in a one-to-one correspondence.

[0030] According to some embodiments of this utility model, the air conditioning system further includes: a first one-way valve and a second one-way valve; the side inlet / outlet is connected to the main inlet; the first inlet / outlet is connected to the first end of the second heat exchange branch; the second inlet / outlet is connected to one end of the first refrigerant inlet / outlet pipe; the other end of the first refrigerant inlet / outlet pipe is connected to the throttling component; the first end of the second refrigerant inlet / outlet pipe is connected to the first refrigerant inlet / outlet pipe; the second end of the second refrigerant inlet / outlet pipe is connected to one interface of the four-way valve; the first end of the first heat exchange branch and the second end of the second heat exchange branch are connected to the second refrigerant inlet / outlet pipe; the second end of the first heat exchange branch and the first end of the second heat exchange branch are respectively connected to multiple distribution ports; the connection point between the first heat exchange branch and the second refrigerant inlet / outlet pipe is the first connection point; the connection point between the second heat exchange branch and the second refrigerant inlet / outlet pipe is the second connection point; the first one-way valve and the second one-way valve are both located on the second refrigerant inlet / outlet pipe; the first one-way valve... The first check valve is located between the second connection point and the adjacent first connection point, and the second check valve is located between the second connection point and the first refrigerant inlet / outlet pipe. Both the first and second check valves are unidirectionally open in the direction away from the second connection point. In the first operating mode, the compressor's exhaust port is connected to the second refrigerant inlet / outlet pipe, and a third connecting channel is formed between the side inlet / outlet and the first inlet / outlet. The side inlet / outlet is the inlet of the third connecting channel, and the first inlet / outlet is the outlet of the third connecting channel. The first check valve is in the closed state, and the second check valve is in the open state. In the second operating mode, the compressor's suction port is connected to the second refrigerant inlet / outlet pipe, and a fourth connecting channel is formed between the side inlet / outlet and the second inlet / outlet. The second inlet / outlet is the inlet of the fourth connecting channel, and the side inlet / outlet is the outlet of the fourth connecting channel. The first check valve is in the open state, and the second check valve is in the closed state.

[0031] According to some embodiments of this utility model, the first side inlet / outlet is connected to one end of the first refrigerant inlet / outlet pipe, the other end of the first refrigerant inlet / outlet pipe is connected to the throttling component, the second side inlet / outlet is connected to the second end of the second heat exchange branch, the first inlet / outlet is connected to the main port, the second inlet / outlet is connected to one end of the second refrigerant inlet / outlet pipe, the other end of the second refrigerant inlet / outlet pipe is connected to one interface of the four-way valve, the first end of the first heat exchange branch is connected to the second refrigerant inlet / outlet pipe, and the second end of the first heat exchange branch and the first end of the second heat exchange branch are respectively connected to multiple distribution ports; in the first operating mode, the compressor's exhaust port is connected to the second refrigerant inlet / outlet pipe... In the second operating mode, the compressor's suction port is connected to the second refrigerant inlet / outlet pipe, forming a fifth connecting channel between the first side inlet / outlet and the second side inlet / outlet, with the second side inlet / outlet serving as the inlet and the first side inlet / outlet serving as the outlet of the fifth connecting channel; in the second operating mode, the compressor's suction port is connected to the second refrigerant inlet / outlet pipe, forming a sixth connecting channel between the first side inlet / outlet and the first side inlet / outlet, with the first side inlet / outlet serving as the inlet and the first side inlet / outlet serving as the outlet of the sixth connecting channel; and a seventh connecting channel is formed between the second side inlet / outlet and the second side inlet / outlet, with the second side inlet / outlet serving as the inlet and the second side inlet / outlet serving as the outlet of the seventh connecting channel.

[0032] According to some embodiments of this utility model, the first side inlet / outlet is connected to the main port, the second side inlet / outlet is connected to the second end of the second heat exchange branch, the third side inlet / outlet is connected to one end of the first refrigerant inlet / outlet pipe, the other end of the first refrigerant inlet / outlet pipe is connected to the throttling component, the first inlet / outlet is connected to the first end of the second heat exchange branch, the second inlet / outlet is connected to one end of the second refrigerant inlet / outlet pipe, the other end of the second refrigerant inlet / outlet pipe is connected to one interface of the four-way valve, the first end of the first heat exchange branch is connected to the second refrigerant inlet / outlet pipe, and the second end of the first heat exchange branch and the first end of the second heat exchange branch are connected to multiple distribution ports; in the first operating mode, the compressor's exhaust port is connected to the second refrigerant inlet / outlet pipe, and an eighth [unclear] is formed between the first side inlet / outlet and the first inlet / outlet. The first side inlet / outlet is the inlet of the eighth connecting channel, and the first inlet / outlet is the outlet of the eighth connecting channel; the third side inlet / outlet and the second side inlet / outlet form a ninth connecting channel, the second side inlet / outlet is the inlet of the ninth connecting channel, and the third side inlet / outlet is the outlet of the ninth connecting channel; in the second operating mode, the compressor's suction port is connected to the second refrigerant inlet / outlet pipe, the third side inlet / outlet and the first side inlet / outlet form a tenth connecting channel, the third side inlet / outlet is the inlet of the tenth connecting channel, and the first side inlet / outlet is the outlet of the tenth connecting channel; the second side inlet / outlet and the second inlet / outlet form an eleventh connecting channel, the second side inlet / outlet is the inlet of the eleventh connecting channel, and the second inlet / outlet is the outlet of the eleventh connecting channel.

[0033] According to some embodiments of this utility model, the first side inlet / outlet is connected to the second end of the second heat exchange branch, the second side inlet / outlet is connected to the main port, the third side inlet / outlet is connected to one end of the first refrigerant inlet / outlet pipe, the other end of the first refrigerant inlet / outlet pipe is connected to the throttling component, the fourth side inlet / outlet is connected to the first end of one of the first heat exchange branches, the first ends of the remaining first heat exchange branches are connected to the second refrigerant inlet / outlet pipe, the first inlet / outlet is connected to one end of the second refrigerant inlet / outlet pipe, the other end of the second refrigerant inlet / outlet pipe is connected to one interface of the four-way valve, the second inlet / outlet is connected to the first end of the second heat exchange branch, and the second end of the first heat exchange branch and the first end of the second heat exchange branch are respectively connected to multiple distribution ports; in the first operating mode, the compressor's exhaust port is connected to the second refrigerant inlet / outlet pipe, a twelfth connecting channel is formed between the first inlet / outlet and the fourth side inlet / outlet, the first inlet / outlet is the inlet of the twelfth connecting channel, and the fourth side inlet / outlet is the outlet of the twelfth connecting channel; the first side inlet / outlet and the third side inlet / outlet are connected to the second heat exchange branch, the second end of the first heat exchange branch and the first end of the second heat exchange branch are respectively connected to multiple distribution ports; in the first operating mode, the compressor's exhaust port is connected to the second refrigerant inlet / outlet pipe, a twelfth connecting channel is formed between the first inlet / outlet and the fourth side inlet / outlet, the first inlet / outlet is the inlet of the twelfth connecting channel, and the fourth side inlet / outlet is the outlet of the twelfth connecting channel; the first side inlet / outlet and the A thirteenth connecting channel is formed between the side inlet and outlet, with the first side inlet and outlet serving as the inlet of the thirteenth connecting channel and the third side inlet and outlet serving as the outlet of the thirteenth connecting channel; a fourteenth connecting channel is formed between the second side inlet and outlet and the second side inlet and outlet, with the second side inlet and outlet serving as the inlet of the fourteenth connecting channel and the second side inlet and outlet serving as the outlet of the fourteenth connecting channel; in the second operating mode, the compressor's suction port is connected to the second refrigerant inlet and outlet pipe; a fifteenth connecting channel is formed between the fourth side inlet and outlet and the first inlet and outlet, with the fourth side inlet and outlet serving as the inlet of the fifteenth connecting channel and the first inlet and outlet serving as the outlet of the fifteenth connecting channel; a sixteenth connecting channel is formed between the first side inlet and outlet and the first inlet and outlet through the fourth connecting port, with the first side inlet and outlet serving as the inlet of the sixteenth connecting channel and the first inlet and outlet serving as the outlet of the sixteenth connecting channel; a seventeenth connecting channel is formed between the third side inlet and outlet and the second side inlet and outlet, with the third side inlet and outlet serving as the inlet of the seventeenth connecting channel and the second side inlet and outlet serving as the outlet of the seventeenth connecting channel.

[0034] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of a reversing valve according to Embodiment 1 of this utility model;

[0036] Figure 2 This is a schematic diagram of the reversing valve in the first working mode according to Embodiment 1 of this utility model;

[0037] Figure 3 This is a schematic diagram of the reversing valve in the second working mode according to Embodiment 1 of this utility model;

[0038] Figure 4 This is a schematic diagram of the reversing valve according to Embodiment 2 of this utility model;

[0039] Figure 5 This is a schematic diagram of the reversing valve in its first working mode according to Embodiment 2 of this utility model;

[0040] Figure 6 This is a schematic diagram of the reversing valve in the second working mode according to Embodiment 2 of this utility model;

[0041] Figure 7 This is a schematic diagram of the reversing valve according to Embodiment 3 of this utility model;

[0042] Figure 8 This is a schematic diagram of the reversing valve in its first working mode according to Embodiment 3 of this utility model;

[0043] Figure 9 This is a schematic diagram of the reversing valve in the second working mode according to Embodiment 3 of this utility model;

[0044] Figure 10 This is a schematic diagram of the reversing valve according to Embodiment 4 of this utility model;

[0045] Figure 11 This is a schematic diagram of the reversing valve in its first working mode according to Embodiment 4 of this utility model;

[0046] Figure 12 This is a schematic diagram of the reversing valve in the second working mode according to Embodiment 4 of this utility model;

[0047] Figure 13 This is a schematic diagram of the reversing valve according to Embodiment 5 of this utility model;

[0048] Figure 14 This is a schematic diagram of the reversing valve according to Embodiment Six of this utility model;

[0049] Figure 15 This is a schematic diagram of the reversing valve according to Embodiment Seven of this utility model;

[0050] Figure 16 This is a schematic diagram of the reversing valve according to Embodiment 8 of this utility model;

[0051] Figure 17 This is a schematic diagram of the reversing valve in its first working mode according to Embodiment 8 of this utility model;

[0052] Figure 18 This is a schematic diagram of the reversing valve in the second working mode according to Embodiment 8 of this utility model;

[0053] Figure 19 This is a schematic diagram of an air conditioning system according to Embodiment 1 of the present utility model;

[0054] Figure 20 This is a schematic diagram of the first operating mode of the air conditioning system according to Embodiment 1 of the present utility model;

[0055] Figure 21 This is a schematic diagram of the second operating mode of the air conditioning system according to Embodiment 1 of this utility model;

[0056] Figure 22 This is a schematic diagram of the first operating mode of the air conditioning system according to Embodiment 2 of this utility model;

[0057] Figure 23 This is a schematic diagram of the second operating mode of the air conditioning system according to Embodiment 2 of this utility model;

[0058] Figure 24 This is a schematic diagram of the first operating mode of the air conditioning system according to Embodiment 3 of this utility model;

[0059] Figure 25 This is a schematic diagram of the second operating mode of the air conditioning system according to Embodiment 3 of this utility model;

[0060] Figure 26 This is a schematic diagram of the first operating mode of the air conditioning system according to Embodiment 4 of this utility model;

[0061] Figure 27 This is a schematic diagram of the second operating mode of the air conditioning system according to Embodiment 4 of this utility model;

[0062] Figure 28 This is a schematic diagram of the first operating mode of the air conditioning system according to Embodiment 5 of this utility model;

[0063] Figure 29 This is a schematic diagram of the second operating mode of the air conditioning system according to Embodiment 5 of this utility model.

[0064] Figure label:

[0065] 100. Air conditioning system;

[0066] 10. Reversing valve;

[0067] 1. Valve body; 11. Valve chamber; 11a. First valve chamber; 111. Third sub-chamber; 112. Fourth sub-chamber; 1121. Fourth connecting port; 11b. Second valve chamber; 12. Side inlet / outlet; 12a. First side inlet / outlet; 12b. Second side inlet / outlet; 12c. Third side inlet / outlet; 12d. Fourth side inlet / outlet; 13. First inlet / outlet; 14. Second inlet / outlet; 15. Connecting chamber; 151. First connecting port; 152. Second connecting port; 153. First sub-chamber; 1531. Third connecting port; 154. Second sub-chamber; 16. Second limiting block;

[0068] 2. Valve core assembly; 21. Valve core; 21a. First valve core; 21b. Second valve core; 211. First limit stop; 22. Support plate;

[0069] 3. Drive assembly; 31. First drive component; 32. Second drive component; 4. Slider; 5. Adjusting spring;

[0070] 20. Compressor; 30. First heat exchanger; 301. First heat exchange branch; 302. Second heat exchange branch; 40. Second heat exchanger; 50. Throttling component; 60. Four-way valve; 701. First refrigerant inlet / outlet pipe; 702. Second refrigerant inlet / outlet pipe; 7021. First connection point; 7022. Second connection point; 703. Third refrigerant inlet / outlet pipe; 80. Check valve; 80a. First check valve; 80b. Second check valve; 90. Distributor; 901. Main port; 902. Distribution port. Detailed Implementation

[0071] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0072] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0073] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0074] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0075] In the description of this utility model, "multiple" means two or more.

[0076] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0077] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0078] The reversing valve 10 according to a first aspect embodiment of the present invention is described below with reference to the accompanying drawings.

[0079] like Figures 1 to 3 As shown, the reversing valve 10 according to the first aspect of the present invention includes: a valve body 1, a valve core assembly 2 and a drive assembly 3. The valve body 1 forms a valve cavity 11 and inlets and outlets communicating with the valve cavity 11. The number of inlets and outlets is not less than three. Multiple inlets and outlets can be connected through the valve cavity 11 to form multiple different communication channels. The valve core assembly 2 is movably disposed in the valve cavity 11 to cut off or open at least part of the communication channels so that the reversing valve 10 switches between at least a first working mode and a second working mode.

[0080] In other words, the movement of the valve core assembly 2 within the valve cavity 11 can control the opening or closing of multiple different connecting channels, thereby enabling the formation of different connected channels within the directional valve 10 in both the first and second operating modes. For example, the multiple connecting channels may include at least a first connecting channel and a second connecting channel. Through the movement of the valve core assembly 2, in the first operating mode, the first connecting channel can be opened and the second connecting channel can be closed; in the second operating mode, the second connecting channel can be opened and the first connecting channel can be closed. That is, in both the first and second operating modes, after the flowing medium enters the directional valve 10, it flows through different first and second connecting channels, thereby adjusting the flow direction of the flowing medium and realizing the directional valve 10's switching function.

[0081] The drive assembly 3 is disposed within the valve cavity 11 and is used to drive the valve core assembly 2. The drive assembly 3 includes at least one drive element, which is a shape memory alloy component. One end of the drive element is connected to the valve core assembly 2, and the other end is connected to the valve body 1. The shape memory alloy component can deform under the influence of temperature. Specifically, the shape memory alloy component can elongate after the temperature rises to the phase transition temperature and recover its deformation after the temperature drops back to the phase transition temperature; that is, the length of the shape memory alloy component varies at different temperatures. In other words, the characteristic that the shape memory alloy component can deform into different lengths at different temperatures can replace the electric drive mechanism in related technologies to drive the valve core assembly 2 within the valve cavity 11. That is, the mechanical mechanism of the shape memory alloy component can replace the electric drive mechanism for driving. It is understood that the shape memory alloy component has a simpler structure and lower production and usage costs compared to the electric drive mechanism. Therefore, the structure of the drive assembly 3 can be simplified, the failure rate of the drive element can be reduced, thereby reducing the cost of the drive assembly 3 and improving its reliability.

[0082] According to the first aspect of the present invention, the directional valve 10 has at least one drive component that is a shape memory alloy component. The shape memory alloy component has a simpler structure than the electric drive mechanism and has lower production and usage costs. It can simplify the structure of the drive assembly 3 and reduce the failure rate of the drive component, thereby reducing the cost of the drive assembly 3 and improving the reliability of the drive assembly 3.

[0083] In some embodiments of this utility model, the driving assembly 3 includes multiple driving elements, including a first driving element 31 and a second driving element 32. The first driving element 31 is a return spring, and the second driving element 32 is a shape memory alloy component. The first driving element 31 and the second driving element 32 are used to drive the valve core assembly 2 to move in opposite directions. That is, the valve core assembly 2 is driven to move in opposite directions by the elastic expansion and contraction deformation of the return spring and the expansion and contraction deformation of the shape memory alloy component at different temperatures. For example, the return spring drives the valve core assembly 2 along a first direction (such as...). Figure 1 As shown in the diagram, e1) moves towards the first side. When the shape memory alloy component elongates after the temperature rises, it pushes the valve core assembly 2 to compress the return spring and move it towards the second side along the first direction. When the shape memory alloy component recovers its deformation and shortens after the temperature drops, the return spring recovers its deformation and elongates, pushing the valve core assembly 2 towards the first side along the first direction. The return spring and shape memory alloy component have simple structures and low failure rates. Therefore, the structure of the drive assembly 3 can be simplified and its cost reduced.

[0084] In some embodiments of this invention, the shape memory alloy component is configured to elongate or shorten due to temperature changes in the refrigerant flowing through the reversing valve 10. Thus, the elongation or shortening of the shape memory alloy component can be controlled by the temperature of the flowing refrigerant, eliminating the need for electrically controlled components that drive the valve core assembly in related technologies. This simplifies the structure of the reversing valve 10 and reduces its production cost.

[0085] In some embodiments of this utility model, the plurality of inlets and outlets include a first inlet / outlet 13, a second inlet / outlet 14, and a side inlet / outlet 12. The first inlet / outlet 13 and the second inlet / outlet 14 are respectively disposed on opposite sides of the valve body 1 along a first direction. The side inlet / outlet 12 is disposed on the outer peripheral wall of the valve body 1. The driving assembly 3 is used to drive the valve core assembly 2 to move along the first direction, so as to control the opening and closing of at least one of the first inlet / outlet 13 and the second inlet / outlet 14. It should be noted that the outer peripheral wall of the valve body 1 refers to the side wall of the valve body 1 in the circumferential direction, and the circumferential direction of the valve body 1 is perpendicular to the first direction.

[0086] The side inlet / outlet 12 is always connected to the valve cavity 11. When the valve core assembly 2 opens the first inlet / outlet 13, the side inlet / outlet 12 can form a conductive channel between the valve cavity 11 and the first inlet / outlet 13. When the valve core assembly 2 closes the first inlet / outlet 13, the conductive channel between the side inlet / outlet 12 and the first inlet / outlet 13 through the valve cavity 11 is cut off. When the valve core assembly 2 opens the second inlet / outlet 14, the side inlet / outlet 12 can form another conductive channel between the valve cavity 11 and the second inlet / outlet 14. When the valve core assembly 2 closes the second inlet / outlet 14, the conductive channel between the side inlet / outlet 12 and the second inlet / outlet 14 through the valve cavity 11 is cut off. Thus, by moving the valve core assembly 2 along the first direction, two different conductive channels can be formed within the valve cavity 11, thereby achieving control of the fluid flow direction. Since the first inlet / outlet 13 and the second inlet / outlet 14 are located on opposite sides of the valve body 1 along the first direction, the valve core assembly 2 can control the opening and closing of at least one of the first inlet / outlet 13 and the second inlet / outlet 14 by moving along the first direction, which can better simplify the movement trajectory of the valve core assembly 2.

[0087] In some embodiments of this utility model, the driving component is helical, and the centerline of the driving component extends along a first direction. The centerline of the driving component refers to a straight line passing through the center of the cross-section of the driving component and extending along the elastic deformation direction of the driving component. The helical shape memory alloy component can achieve a larger deformation amount with the same material usage; in other words, it allows the shape memory alloy component to have a larger amount of expansion and contraction deformation, thereby ensuring the stability and reliability of the movement of the valve core assembly 2 by the shape memory alloy component through elongation or shortening. Furthermore, the helical structure has good elasticity, which can reduce the risk of fatigue damage to the driving component under compression, thereby extending the service life of the driving component and reducing the operating cost of the reversing valve 10.

[0088] In some embodiments of this invention, the driving component is sleeved on the outer periphery of the valve core assembly 2. This reduces the difficulty of installing the driving component; for example, when installing the driving component, a portion of the valve core assembly 2 can be inserted into the driving component, thereby improving the assembly efficiency of the directional control valve 10. Furthermore, along the moving direction of the valve core assembly 2, the driving component can share a portion of the installation space with the valve core assembly 2, thereby saving installation space, improving space utilization, and controlling the overall size of the directional control valve 10.

[0089] In some embodiments of this utility model, a first limiting block 211 is provided on the outer peripheral surface of the valve core assembly 2, and a second limiting block 16 is provided on the inner peripheral surface of the valve cavity 11. A driving member is disposed between the first limiting block 211 and the second limiting block 16, with one end of the driving member connected to the first limiting block 211 and the other end connected to the second limiting block 16. Thus, the first limiting block 211 and the second limiting block 16 can effectively restrict the movement of both ends of the driving member, thereby allowing the driving member to be stably connected between the valve core assembly 2 and the valve body 1, providing driving force for the movement of the valve core assembly 2.

[0090] In some embodiments, the diameter of the driving member remains unchanged along the first direction, and at least a portion of the first limiting block 211 and the second limiting block 16 are arranged opposite each other along the first direction. Both ends of the driving member are respectively supported on the opposite portions of the first limiting block 211 and the second limiting block 16. Specifically, the driving member can be supported between the first limiting block 211 and the second limiting block 16; that is, one end of the driving member abuts against the side of the first limiting block 211 facing the second limiting block 16, and the other end of the driving member abuts against the side of the second limiting block 16 facing the first limiting block 211. The connection structure between the driving member and the first limiting block 211 and the second limiting block 16 is simple. Alternatively, both ends of the driving member can be fixedly connected to the first limiting block 211 and the second limiting block 16, etc. Here, the specific connection method between the driving member and the valve body 1 and the valve core assembly 2 is not specifically limited.

[0091] In some embodiments of this utility model, the drive assembly 3 includes at least one first drive member 31 and at least one second drive member 32. The number of first drive members 31 and second drive members 32 are the same and they correspond one-to-one. The first drive members 31 and the corresponding second drive members 32 form a drive member group. The first drive members 31 and the second drive members 32 in the same drive member group are arranged along a first direction. The first drive members 31 and the second drive members 32 in the same drive member group are used to drive the valve core assembly 2 to move in opposite directions along the first direction. That is, the drive assembly 3 includes at least one drive member group. The first drive member 31 in the same drive member group can drive the valve core assembly 2 to move in the first direction toward the first side of the valve cavity 11, and the second drive member 32 in the same drive member group can drive the valve core assembly 2 to move in the first direction toward the second side of the valve cavity 11, thereby realizing the movement of the valve core assembly 2 in opposite directions along the first direction. The first driving component 31 and the second driving component 32 are arranged along the first direction, which can avoid mutual interference between the first driving component 31 and the second driving component 32, so as to ensure the stability and reliability of the first driving component 31 and the second driving component 32 in driving the valve core assembly 2 to move.

[0092] In some embodiments of this utility model, such as Figures 1 to 3As shown, the valve core assembly 2 includes a valve core 21 and a set of driving components. A first driving component 31 and a second driving component 32 are used to drive the valve core 21 to move in opposite directions along a first direction. That is, one valve core 21 corresponds to one set of driving components. The first driving component 31 can drive the valve core 21 to move in the first direction toward a first side of the valve cavity 11, and the second driving component 32 can drive the valve core 21 to move in the first direction toward a second side of the valve cavity 11, thereby realizing the movement of the valve core 21 in opposite directions along the first direction under the drive of the driving assembly 3.

[0093] In some embodiments of this utility model, such as Figures 4 to 6 As shown, the valve core assembly 2 includes two valve cores 21, which are spaced apart along a first direction and move independently of each other. Two sets of drive components are provided, each corresponding to one of the two valve cores 21. The first drive component 31 and the second drive component 32 of each drive component set are used to drive the corresponding valve core 21 to move in opposite directions along the first direction. That is, the two valve cores 21 correspond one-to-one with the two sets of drive components; that is, one valve core 21 can move independently along the first direction under the drive of its corresponding first drive component 31 and second drive component 32, and the other valve core 21 can also move independently along the first direction under the drive of its corresponding first drive component 31 and second drive component 32. This allows the two valve cores 21 to move independently along the first direction, thus avoiding mutual interference when the two valve cores 21 move.

[0094] In some embodiments of this utility model, such as Figures 13 to 16 As shown, the valve core assembly 2 includes two valve cores 21, which are arranged and connected along a first direction. A drive assembly is provided, with one end of a first drive member 31 and one end of a second drive member 32 both connected to the valve body 1. The other end of the first drive member 31 is connected to one of the valve cores 21, and the other end of the second drive member 32 is connected to the other valve core 21. The first drive member 31 and the second drive member 32 are used to drive the two valve cores 21 to move synchronously along the first direction in opposite directions. In other words, the two valve cores 21 can be connected as a whole. The first drive member 31 can simultaneously drive both valve cores 21 to move along the first direction toward the first side of the valve cavity 11, and the second drive member 32 can simultaneously drive both valve cores 21 to move along the first direction toward the second side of the valve cavity 11.

[0095] Therefore, the number of first drive component 31 and second drive component 32 can be significantly reduced, thereby decreasing the number of parts in the directional control valve 10, simplifying its structure, and lowering its production cost. Furthermore, during assembly, only one first drive component 31 and one second drive component 32 need to be installed, simplifying the assembly process and improving assembly efficiency.

[0096] In some embodiments of this utility model, such as Figures 1 to 3 As shown, the valve core assembly 2 includes a valve core 21, which is movable along a first direction to control the opening and closing of the first inlet and outlet 13 and the opening and closing of the second inlet and outlet 14. A side inlet and outlet 12 is provided. In a first operating mode, the valve core 21 opens the first inlet and outlet 13 and closes the second inlet and outlet 14, and the first inlet and outlet 13 is connected to the side inlet and outlet 12. In a second operating mode, the valve core 21 closes the first inlet and outlet 13 and opens the second inlet and outlet 14, and the second inlet and outlet 14 is connected to the side inlet and outlet 12.

[0097] In other words, in the first operating mode, valve core 21 connects the first inlet / outlet 13 to the valve chamber 11 and disconnects the second inlet / outlet 14 from the valve chamber 11. Since the side inlet / outlet 12 remains connected to the valve chamber 11, the connection between the side inlet / outlet 12 and the second inlet / outlet 14 is cut off. The side inlet / outlet 12 can only form a single connected channel, such as the first connecting channel, between the valve chamber 11 and the first inlet / outlet 13 for fluid flow. In the second operating mode, valve core 21 disconnects the first inlet / outlet 13 from the valve chamber 11 and connects the second inlet / outlet 14 to the valve chamber 11. Since the side inlet / outlet 12 remains connected to the valve chamber 11, the connection between the side inlet / outlet 12 and the first inlet / outlet 13 is cut off. The side inlet / outlet 12 can only form another connected channel, such as the second connecting channel, between the valve chamber 11 and the second inlet / outlet 14 for fluid flow. Therefore, the directional valve 10 can provide two different connecting channels for fluid flow in the first and second operating modes, thereby changing the flow direction of the fluid in the overall flow path by changing the flow direction of the fluid within the directional valve 10.

[0098] In some embodiments of this utility model, such as Figures 4 to 6As shown, two valve chambers 11 arranged along a first direction are formed inside the valve body 1. The two valve chambers 11 are a first valve chamber 11a and a second valve chamber 11b, respectively. A connecting cavity 15 is also formed inside the valve body 1. The connecting cavity 15 is located between the first valve chamber 11a and the second valve chamber 11b and connects the first valve chamber 11a and the second valve chamber 11b. The connecting cavity 15 has a first connecting port 151 connected to the first valve chamber 11a and a second connecting port 152 connected to the second valve chamber 11b. There are multiple side inlets and outlets 12, including a first side inlet and outlet 12a and a second side inlet and outlet 12b. The first inlet and outlet 13 and the first side inlet and outlet 12a are provided on the wall of the first valve chamber 11a. The second inlet / outlet 14 and the second side inlet / outlet 12b are disposed on the wall of the second valve cavity 11b; the valve core assembly 2 includes two valve cores 21, namely the first valve core 21a and the second valve core 21b. The first valve core 21a is movably disposed in the first valve cavity 11a along the first direction to control the connection and disconnection between the first side inlet / outlet 12a and the first inlet / outlet 13, and to control the connection and disconnection between the first side inlet / outlet 12a and the connecting cavity 15. The second valve core 21b is movably disposed in the second valve cavity 11b along the first direction to control the connection and disconnection between the second side inlet / outlet 12b and the second inlet / outlet 14, and to control the connection and disconnection between the second side inlet / outlet 12b and the connecting cavity 15.

[0099] Specifically, when the first valve core 21a connects the first side inlet / outlet 12a and the first inlet / outlet 13, the first side inlet / outlet 12a can form a first connecting channel between the first valve cavity 11a and the first inlet / outlet 13; when the second valve core 21b connects the second side inlet / outlet 12b and the second inlet / outlet 14, the second side inlet / outlet 12b can form a second connecting channel between the second valve cavity 11b and the second inlet / outlet 14; when the first valve core 21a connects the first side inlet / outlet 12a and the connecting cavity 15 and the second valve core 21b connects the second side inlet / outlet 12b and the second side inlet / outlet 12b, the first side inlet / outlet 12a can form a third connecting channel between the first valve cavity 11a, the connecting cavity 15, the second valve cavity 11b and the second side inlet / outlet 12b.

[0100] As can be seen, through the first valve chamber 11a, the first valve chamber 11a located within the first valve chamber 11a, the second valve chamber 11b, and the second valve core 21b located within the second valve chamber 11b, at least three different connecting channels can be formed within the reversing valve 10. This provides more reversing options for the flow of fluid. In other words, the reversing valve 10 can flexibly control the conduction of three different connecting channels according to the need for the fluid to change its flow direction, thereby realizing the reversing of the fluid within the reversing valve 10. This can improve the flexibility of the reversing valve 10 and make it highly applicable.

[0101] In some embodiments of this utility model, the first valve core 21a is used to control the opening and closing of the first inlet / outlet 13 and the opening and closing of the first connecting port 151, and the second valve core 21b is used to control the opening and closing of the second inlet / outlet 14 and the opening and closing of the second connecting port 152. That is, the first side inlet / outlet 12a and the first valve cavity 11a are always in communication, and the second side inlet / outlet 12b and the second valve cavity 11b are always in communication. The first valve core 21a controls the connection or disconnection between the first side inlet / outlet 12a and the first inlet / outlet 13 by opening or closing the first inlet / outlet 13. The first valve core 21a controls the connection or disconnection between the first side inlet / outlet 12a and the connecting cavity 15 by opening or closing the first connecting port 151. The second valve core 21b controls the connection or disconnection between the second side inlet / outlet 12b and the second inlet / outlet 14 by opening or closing the second inlet / outlet 14. The first valve core 21a controls the connection or disconnection between the second side inlet / outlet 12b and the connecting cavity 15 by opening or closing the second connecting port 152. Therefore, the difficulty of the first valve core 21a controlling the connection and disconnection of the first side inlet / outlet 12a and the first inlet / outlet 13, the first valve core 21a controlling the connection and disconnection of the first side inlet / outlet 12a and the connecting cavity 15, the second valve core 21b controlling the connection and disconnection of the second side inlet / outlet 12b and the second inlet / outlet 14, and the second valve core 21b controlling the connection and disconnection of the second side inlet / outlet 12b and the connecting cavity 15 can be reduced. In other words, the difficulty of the reversing valve 10 switching between the first working mode and the second working mode can be reduced.

[0102] In some embodiments of this utility model, in the first working mode, the first valve core 21a closes the first inlet / outlet 13 and opens the first connecting port 151, the second valve core 21b closes the second inlet / outlet 14 and opens the second connecting port 152, and the first side inlet / outlet 12a is connected to the second side inlet / outlet 12b through the connecting cavity 15; in the second working mode, the first valve core 21a opens the first inlet / outlet 13 and closes the first connecting port 151, and the first side inlet / outlet 12a is connected to the first inlet / outlet 13; the second valve core 21b opens the second inlet / outlet 14 and closes the second connecting port 152, and the second side inlet / outlet 12b is connected to the second inlet / outlet 14.

[0103] In other words, in the first working mode, the first valve core 21a cuts off the first inlet / outlet 13 from the first valve chamber 11a and connects the first connecting port 151 to the first valve chamber 11a; the second valve core 21b cuts off the second inlet / outlet 14 from the second valve chamber 11b and connects the first connecting port 151 to the second valve chamber 11b; the connecting channel between the first side inlet / outlet 12a and the first inlet / outlet 13 is cut off; the first valve chamber 11a connects to the connecting chamber 15 through the first connecting port 151; the connecting channel between the second side inlet / outlet 12b and the second inlet / outlet 14 is cut off; the second valve chamber 11b connects to the connecting chamber 15 through the second connecting port 152; so that the first side inlet / outlet 12a can sequentially form a connecting channel, such as a fifth connecting channel, between the first valve chamber 11a, the connecting chamber 15, the second valve chamber 11b, and the second side inlet / outlet 12b, for fluid flow.

[0104] In the second operating mode, the first valve core 21a connects the first inlet / outlet 13 to the first valve chamber 11a and disconnects the first connecting port 151 from the first valve chamber 11a. The second valve core 21b connects the second inlet / outlet 14 to the second valve chamber 11b and disconnects the first connecting port 151 from the second valve chamber 11b. The connection between the first side inlet / outlet 12a and the connecting chamber 15 is disconnected. The connection between the second side inlet / outlet 12b and the connecting chamber 15 is disconnected. The first side inlet / outlet 12a can only form a connecting channel, such as the sixth connecting channel, between the first valve chamber 11a and the first inlet / outlet 13. The second side inlet / outlet 12b can only form another connecting channel, such as the seventh connecting channel, between the second valve chamber 11b and the second inlet / outlet 14, so as to allow fluid flow.

[0105] Therefore, the reversing valve 10 can provide a fifth communication channel for the fluid in the first working mode, and the reversing valve 10 can provide two communication channels for the fluid that are different from the fifth communication channel in the second working mode, thereby increasing the number of different communication channels that the reversing valve 10 can provide to meet the needs of the fluid to change different flow directions.

[0106] In some embodiments of this utility model, such as Figures 7 to 9As shown, the side inlet / outlet 12 also includes a third side inlet / outlet 12c, which is located on the side wall of the connecting cavity 15 and communicates with the connecting cavity 15. In the first working mode, the first valve core 21a opens the first inlet / outlet 13 and closes the first connecting port 151; the second valve core 21b closes the second inlet / outlet 14 and opens the second connecting port 152, the first side inlet / outlet 12a communicates with the first inlet / outlet 13, and the third side inlet / outlet 12c communicates with the second side inlet / outlet 12b through the connecting cavity 15. In the second working mode, the first valve core 21a closes the first inlet / outlet 13 and opens the first connecting port 151; the second valve core 21b opens the second inlet / outlet 14 and closes the second connecting port 152, the first side inlet / outlet 12a communicates with the third side inlet / outlet 12c through the connecting cavity 15, and the second side inlet / outlet 12b communicates with the second inlet / outlet 14.

[0107] In other words, in the first working mode, the first valve core 21a connects the first inlet / outlet 13 to the first valve chamber 11a and disconnects the first connecting port 151 from the first valve chamber 11a. The second valve core 21b connects the second connecting port 152 to the second valve chamber 11b and disconnects the second inlet / outlet 14 from the second valve chamber 11b. The connection between the first side inlet / outlet 12a and the connecting chamber 15 is disconnected. The connection between the second side inlet / outlet 12b and the second inlet / outlet 14 is disconnected. The second valve chamber 11b is connected to the connecting chamber 15 through the second connecting port 152. The first side inlet / outlet 12a can form a connecting channel, such as the eighth connecting channel, between the first valve chamber 11a and the first inlet / outlet 13. The third side inlet / outlet 12c can sequentially form another connecting channel, such as the ninth connecting channel, between the connecting chamber 15 and the second valve chamber 11b and the second side inlet / outlet 12b, to allow fluid flow.

[0108] In the second operating mode, the first valve core 21a cuts off the first inlet / outlet 13 from the first valve chamber 11a and connects the first connecting port 151 to the first valve chamber 11a. The second valve core 21b cuts off the second connecting port 152 from the second valve chamber 11b and connects the second inlet / outlet 14 to the second valve chamber 11b. The connecting channel between the first side inlet / outlet 12a and the first inlet / outlet 13 is cut off. The first valve chamber 11a is connected to the connecting chamber 15 through the first connecting port 151. The second side inlet / outlet 12b is cut off from the connecting chamber 15. The first side inlet / outlet 12a can form a connecting channel, such as the tenth connecting channel, between the first valve chamber 11a, the connecting chamber 15 and the third side inlet / outlet 12c. The second side inlet / outlet 12b can form another connecting channel, such as the eleventh connecting channel, between the second valve chamber 11b and the second inlet / outlet 14, to allow fluid flow.

[0109] Therefore, the directional valve 10 can provide two different communication channels for the fluid in both the first and second operating modes. Furthermore, the two communication channels formed by the directional valve 10 in the first operating mode are different from the two communication channels formed in the second operating mode, thereby increasing the number of different communication channels that the directional valve 10 can provide to meet the needs of the fluid to change different flow directions.

[0110] In some embodiments of this utility model, such as Figures 10 to 12 As shown, the connecting cavity 15 includes a first sub-cavity 153 and a second sub-cavity 154 arranged along a first direction. The first valve cavity 11a is connected to the second valve cavity 11b through the first sub-cavity 153 and the second sub-cavity 154 in sequence. One end of the first sub-cavity 153 connected to the first valve cavity 11a forms a first connecting port 151, and the other end of the first sub-cavity 153 connected to the second sub-cavity 154 forms a third connecting port 1531. A slider 4 is provided in the first sub-cavity 153. The slider 4 is spaced apart from the first connecting port 151. The slider 4 moves between a first position and a second position along the first direction. In the first position, the slider 4 opens the third connecting port 1531. In the second position, the slider 4 closes the third connecting port 1531. The third side inlet / outlet 12c is provided on the wall of the second sub-cavity 154 and is connected to the second sub-cavity 154.

[0111] In other words, the first connecting port 151 remains connected to the first sub-cavity 153. In the first position, the slider 4 opens the third connecting port 1531, and the first sub-cavity 153 is connected to the second sub-cavity 154 through the third connecting port 1531. In the second position, the slider 4 closes the third connecting port 1531, and the connection between the first sub-cavity 153 and the second sub-cavity 154 is cut off. That is, the slider 4 is used to open or close the third connecting port 1531 to control the connection or cut-off between the first sub-cavity 153 and the second sub-cavity 154.

[0112] Specifically, when the reversing valve 10 switches from the initial state to the first working mode, the first side inlet / outlet 12a is connected to the connecting cavity 15. After the fluid enters the first valve cavity 11a through the first side inlet / outlet 12a, part of it can enter the first sub-cavity 153 through the first connecting port 151 and push the slider 4 to move to the second position, cutting off the first sub-cavity 153 and the second sub-cavity 154, so as to prevent the fluid entering through the first side inlet / outlet 12a from entering the connecting cavity 15 and being discharged through the third side inlet / outlet 12c, so as to ensure that the reversing valve 10 flows according to the predetermined flow path in the first working mode.

[0113] In some embodiments, a first sealing surface is formed on the outer peripheral surface of the slider 4 near the second sub-cavity 154, and a second sealing surface is formed on the inner peripheral surface of the first sub-cavity 153 near the second sub-cavity 154. In a first position, the first sealing surface and the second sealing surface are spaced apart; in a second position, the first sealing surface and the second sealing surface abut against each other. In the direction from the first sub-cavity 153 to the second sub-cavity 154, the first sealing surface and the second sealing surface extend obliquely toward the centerline of the connecting cavity 15. That is, both the first sealing surface and the second sealing surface are inclined surfaces. This increases the contact area between the first sealing surface and the second sealing surface, improves the sealing effect when the first sealing surface and the second sealing surface are in contact, thereby improving the reliability of the valve core assembly 2 in closing the third connecting port 1531. In addition, it reduces the pressure of the slider 4 and the valve body 1 pressing against each other, thus avoiding crushing damage.

[0114] In some embodiments of this invention, the slider 4 is configured to be driven by the fluid pressure difference between the first valve chamber 11a and the second sub-chamber 154. This eliminates the need for a drive mechanism to move the slider 4 between the first and second positions, thereby simplifying the structure of the directional valve 10 and reducing its production cost.

[0115] In some embodiments of this utility model, such as Figures 4 to 6 As shown, the first valve core 21a and the second valve core 21b are connected or move independently of each other. That is, the first valve core 21a can achieve synchronous movement through a fixed connection with the second valve core 21b, thereby saving the number of driving components and reducing the production cost of the directional control valve 10. The first valve core 21a can also move relatively independently from the second valve core 21b; that is, the first valve core 21a can move independently and the second valve core 21b can move independently. This avoids mutual interference between the movements of the first valve core 21a and the second valve core 21b, and allows for flexible adjustment of the positions of the first valve core 21a and the second valve core 21b according to the requirements of the communication channel, controlling the opening or closing of the corresponding communication channel, thereby improving the flexibility of the directional control valve 10.

[0116] In some embodiments of this utility model, such as Figures 14 to 16 As shown, the first valve core 21a is connected to the second valve core 21b. The second valve core 21b is movably disposed on the first valve core 21a relative to the first valve core 21a along a first direction. The reversing valve 10 includes an adjusting spring 5. One end of the adjusting spring 5 is connected to the first valve core 21a, and the other end of the adjusting spring 5 is connected to the second valve core 21b. The adjusting spring 5 is used to drive the first valve core 21a and the second valve core 21b to slide in a direction away from each other along the first direction. The valve body 1, valve core 21, and driving component all have certain machining tolerances during processing. Figure 14Taking the directional control valve 10 shown as an example, when the first valve core 21a and the second valve core 21b simultaneously close the first connection port 151 with the first valve core 21a and close the second inlet / outlet 14 with the second valve core 21b, if the first valve core 21a has not closed the first connection port 151 when the second valve core 21b closes the second inlet / outlet 14, that is, if there is still a certain distance between the first valve core 21a and the first connection port 151, the first valve core 21a can continue to move towards the second inlet / outlet 14 by squeezing the adjusting spring 5, so that the first valve core 21a can stably close the first connection port 151. Therefore, the requirements for the machining tolerances of the directional control valve 10 can be reduced, thus reducing the production difficulty of the directional control valve 10, thereby reducing the production cost of the directional control valve 10 and improving its production efficiency.

[0117] In some embodiments of this utility model, such as Figures 16 to 18 As shown, the first valve chamber 11a includes a third sub-chamber 111 and a fourth sub-chamber 112 arranged and connected along a first direction. The fourth sub-chamber 112 is connected between the third sub-chamber 111 and the connecting chamber 15. The plurality of side inlets and outlets 12 also include a third side inlet / outlet 12c and a fourth side inlet / outlet 12d. The third side inlet / outlet 12c is located on the wall of the connecting chamber 15 and is connected to the connecting chamber 15. The fourth side inlet / outlet 12d and the first inlet / outlet 13 are located on the wall of the third sub-chamber 111. The first inlet / outlet 13 is connected to the fourth side inlet / outlet 12d through the third sub-chamber 111. The first side inlet / outlet 12a is located on the wall of the fourth sub-chamber 112 and is connected to the fourth sub-chamber 112. One end of the fourth sub-chamber 112 connected to the third sub-chamber 111 forms a fourth connecting port 1121. The first valve core 21a is used to control the opening and closing of the first connecting port 1121 and to control the fourth connecting port 1121. The opening and closing of valve 21, the second valve core 21b is used to control the opening and closing of the second inlet and outlet 14 and the second connecting port 152; in the first working mode, the first valve core 21a opens the first connecting port 151 and closes the fourth connecting port 1121, the second valve core 21b opens the second inlet and outlet 14 and closes the second connecting port 152, the first side inlet and outlet 12a is connected to the third side inlet and outlet 12c through the connecting cavity 15, and the second side inlet and outlet 12b is connected to the second inlet and outlet 14; in the second working mode, the first valve core 21a closes the first connecting port 151 and opens the fourth connecting port 1121, the second valve core 21b closes the second inlet and outlet 14 and opens the second connecting port 152, the first side inlet and outlet 12a is connected to the fourth side inlet and outlet 12d, and the second side inlet and outlet 12b is connected to the third side inlet and outlet 12c through the connecting cavity 15.

[0118] In other words, in the first working mode, the first valve core 21a connects the first connecting port 151 and the valve cavity 11 and cuts off the fourth connecting port 1121 and the fourth sub-cavity 112. The fourth sub-cavity 112 is connected to the connecting cavity 15 through the first connecting port 151, and the connection between the fourth sub-cavity 112 and the third sub-cavity 111 through the fourth connecting port 1121 is cut off. The second valve core 21b connects the second inlet / outlet 14 and the second sub-cavity 154 and cuts off the second connecting port 152 and the second valve cavity 11b. The connection between the second valve cavity 11b and the connecting cavity 15 through the second connecting port 152 is cut off. Therefore, the first inlet / outlet 13 can form a first connecting channel, such as the twelfth connecting channel, between the third sub-cavity 111 and the fourth side inlet / outlet 12d. The first side inlet / outlet 12a can form a second connecting channel, such as the thirteenth connecting channel, between the fourth sub-cavity 112, the connecting cavity 15 and the third side inlet / outlet 12c in sequence. The second side inlet / outlet 12b can form a third connecting channel, such as the fourteenth connecting channel, between the second valve cavity 11b and the second inlet / outlet 14, for fluid flow.

[0119] In the second operating mode, the first valve core 21a cuts off the first connecting port 151 and the valve cavity 11 and connects the fourth connecting port 1121 and the fourth sub-cavity 112. The fourth sub-cavity 112 is connected to the third sub-cavity 111 through the fourth connecting port 1121. The connection between the fourth sub-cavity 112 and the connecting cavity 15 through the first connecting port 151 is cut off. The second valve core 21b cuts off the second inlet / outlet 14 and the second sub-cavity 154 and connects the second connecting port 152 and the second valve cavity 11b. The second valve cavity 11b is connected to the connecting cavity 15 through the second connecting port 152. Therefore, the first inlet / outlet 13 can form a first connecting channel, such as the fifteenth connecting channel, between the third sub-cavity 111 and the fourth side inlet / outlet 12d. The first side inlet / outlet 12a can form a second connecting channel, such as the sixteenth connecting channel, between the fourth sub-cavity 112, the third sub-cavity 111 and the first inlet / outlet 13 in sequence. The second side inlet / outlet 12b can form a third connecting channel, such as the seventeenth connecting channel, between the second valve cavity 11b, the connecting cavity 15 and the third side inlet / outlet 12c in sequence, so as to allow fluid flow.

[0120] Therefore, the directional valve 10 can provide three different communication channels for the fluid in both the first and second operating modes. Furthermore, the communication channels formed by the directional valve 10 in the first operating mode are different from those formed in the second operating mode, thereby increasing the number of different communication channels that the directional valve 10 can provide to meet the needs of the fluid to change different flow directions.

[0121] The following description, with reference to the accompanying drawings, describes a specific embodiment of the reversing valve 10 according to the present invention.

[0122] Example 1

[0123] like Figures 1 to 3 As shown, the valve body 1 has a valve cavity 11, a valve core 21, and three inlets and outlets, namely a side inlet / outlet 12, a first inlet / outlet 13, and a second inlet / outlet 14. The first inlet / outlet 13 and the second inlet / outlet 14 are located on opposite sides of the valve body 1 along the first direction. The side inlet / outlet 12 is located on the side wall of the valve cavity 11. The drive assembly 3 includes a first drive member 31 and a second drive member 32. The first drive member 31 is located on the side of the second drive member 32 facing the first inlet / outlet 13.

[0124] Example 2

[0125] like Figures 4 to 6 As shown, the valve body 1 has two valve chambers 11, namely the first valve chamber 11a and the second valve chamber 11b. The valve body 1 also has a connecting cavity 15 that connects the first valve chamber 11a and the second valve chamber 11b. The two ends of the connecting cavity 15 are the first connecting port 151 and the second connecting port 152, respectively. The valve core 21 has two valve cores, namely the first valve core 21a and the second valve core 21b. The first valve core 21a is located in the first valve chamber 11a, and the second valve core 21b is located in the second valve chamber 11b. There are four inlets and outlets, namely the first side inlet and outlet 12a, the second side inlet and outlet 12b, the first inlet and outlet 13, and the second inlet and outlet 14. The first inlet and outlet 13 and the second inlet and outlet 14 are located on opposite sides of the valve body 1 along the first direction. The first side inlet and outlet 12a is located on the side wall of the first valve chamber 11a, and the second side inlet and outlet 12b is located on the side wall of the second valve chamber 11b. The drive assembly 3 includes two sets of drive components, one set of drive components is located in the first valve chamber 11a, and the other set of drive components is located in the second valve chamber 11b.

[0126] In the drive assembly within the first valve chamber 11a, the first drive 31 is located on the side of the second drive 32 away from the first inlet / outlet 13. The first drive 31 is used to drive the first valve core 21a to move toward the direction close to the first connecting port 151, and the second drive 32 is used to drive the first valve core 21a to move toward the direction close to the first inlet / outlet 13.

[0127] In the drive assembly within the second valve chamber 11b, the first drive member 31 is located on the side of the second drive member 32 away from the second inlet / outlet 14. The first drive member 31 is used to drive the first valve core 21a to move toward the direction close to the second connecting port 152, and the second drive member 32 is used to drive the first valve core 21a to move toward the direction close to the second inlet / outlet 14.

[0128] Example 3

[0129] like Figures 7 to 9 As shown, the structure of Embodiment 3 is largely the same as that of Embodiment 2. The difference between Embodiment 3 and Embodiment 2 is that:

[0130] There are five inlets and outlets, namely the first side inlet and outlet 12a, the second side inlet and outlet 12b, the third side inlet and outlet 12c, the first inlet and outlet 13, and the second inlet and outlet 14. The third side inlet and outlet 12c is located on the side wall of the connecting cavity 15 and is connected to the connecting cavity 15.

[0131] In the drive assembly within the first valve chamber 11a, the first drive member 31 is disposed on the side of the second drive member 32 away from the first communication port 151. The first drive member 31 is used to drive the first valve core 21a to move toward the direction close to the first inlet / outlet 13, and the second drive member 32 is used to drive the first valve core 21a to move toward the direction close to the first communication port 151.

[0132] Example 4

[0133] like Figures 10 to 12 As shown, the structure of Embodiment 4 is largely the same as that of Embodiment 3. The difference between Embodiment 4 and Embodiment 3 is that:

[0134] The connecting cavity 15 includes a first sub-cavity 153 and a second sub-cavity 154 arranged along a first direction. The first sub-cavity 153 connects the first valve cavity 11a and the second sub-cavity 154. One end of the first sub-cavity 153 that connects to the second sub-cavity 154 is a third connecting port 1531. A slider 4 is provided inside the first sub-cavity 153. The slider 4 moves along the first direction between a first position and a second position. In the first position, the slider 4 opens the third connecting port 1531. In the second position, the slider 4 closes the third connecting port 1531. The first connecting port 151 is always connected to the first sub-cavity 153. In addition, a third side inlet / outlet 12c is provided on the wall of the second sub-cavity 154.

[0135] Example 5

[0136] like Figure 13 As shown, the structure of Embodiment 5 is largely the same as that of Embodiment 3. The difference between Embodiment 5 and Embodiment 3 is that:

[0137] The first valve core 21a and the second valve core 21b are fixedly connected. The drive assembly 3 includes only one first drive member 31 and one second drive member 32. The first drive member 31 is located in the first valve cavity 11a and is used to drive the first valve core 21a and the second valve core 21b to move synchronously along the first direction toward the direction close to the first inlet / outlet 13. The second drive member 32 is located in the second valve cavity 11b and is used to drive the first valve core 21a and the second valve core 21b to move synchronously along the first direction toward the direction close to the second inlet / outlet 14.

[0138] Example 6

[0139] like Figure 14 As shown, the structure of Embodiment Six is ​​largely the same as that of Embodiment Five. The difference between Embodiment Six and Embodiment Five is that:

[0140] The first valve core 21a and the second valve core 21b are slidably connected relative to each other along a first direction. An adjusting spring 5 is provided between the first valve core 21a and the second valve core 21b. The adjusting spring 5 is used to push the first valve core 21a and the second valve core 21b to move in a direction away from each other.

[0141] Example 7

[0142] like Figure 15 As shown, the structure of Embodiment 7 is largely the same as that of Embodiment 6. The difference between Embodiment 7 and Embodiment 6 is that:

[0143] The first driving member 31 and the second driving member 32 are both disposed in the first valve cavity 11a. The first driving member 31 is located on the side of the second driving member 32 facing the first inlet / outlet 13. The first driving member 31 is used to drive the first valve core 21a and the second valve core 21b to move along the first direction toward the direction close to the first inlet / outlet 13. The second driving member 32 is used to drive the first valve core 21a and the second valve core 21b to move along the first direction toward the direction away from the first inlet / outlet 13.

[0144] Example 8

[0145] like Figures 16 to 18 As shown, the structure of Embodiment 8 is largely the same as that of Embodiment 5. The difference between Embodiment 8 and Embodiment 5 is that:

[0146] The first valve chamber 11a includes a third sub-chamber 111 and a fourth sub-chamber 112 arranged along a first direction. The third sub-chamber 111 is located on the side of the fourth sub-chamber 112 away from the connecting chamber 15. The end of the fourth sub-chamber 112 near the third sub-chamber 111 is the fourth connecting port 1121. The first valve core 21a is disposed in the fourth sub-chamber 112. The valve core assembly 2 also includes a support plate 22, which is disposed in the third sub-chamber 111 and fixedly connected to the first valve core 21a. The first driving member 31 is disposed in the second valve chamber 11b. The second driving member 32 is disposed in the third sub-chamber 111 and is located on the side of the support plate 22 facing the first valve core 21a. Both ends of the second driving member 32 are connected to the support plate 22 and the inner wall of the third sub-chamber 111. The first driving member 31 is used to drive the valve core assembly 2 to move along the first direction toward the direction close to the second inlet / outlet 14. The second driving member 32 is used to drive the valve core assembly 2 to move along the first direction toward the direction close to the first inlet / outlet 13.

[0147] An air conditioning system 100 according to a second aspect embodiment of the present invention will now be described with reference to the accompanying drawings.

[0148] like Figures 19 to 29As shown, an air conditioning system 100 according to a second aspect embodiment of the present invention includes: a compressor 20, a first heat exchanger 30, a second heat exchanger 40, a throttling component 50, a four-way valve 60, and a reversing valve 10. The exhaust port and intake port of the compressor 20, the second heat exchanger 40, and the reversing valve 10 are respectively connected to the four ports of the four-way valve 60. The throttling component 50 is connected between the first heat exchanger 30 and the second heat exchanger 40. The first heat exchanger 30 includes multiple heat exchange branches. Part of the inlet and outlet of the reversing valve 10 is connected to the first heat exchanger 30 and is used to change the refrigerant flow path within the first heat exchanger 30. The air conditioning system 100 has a first operating mode and a second operating mode. In the first operating mode, the reversing valve 10 is in a first operating mode to connect some heat exchange branches in series. In the second operating mode, the reversing valve 10 is in a second operating mode to connect multiple heat exchange branches in parallel.

[0149] It should be noted that the first heat exchanger 30 can be an indoor or outdoor heat exchanger, and the second heat exchanger 40 can also be an indoor or outdoor heat exchanger. In a specific example, the first heat exchanger 30 is an indoor heat exchanger, the second heat exchanger 40 is an outdoor heat exchanger, the first operating mode is a heating mode, and the second operating mode is a cooling mode. In the first operating mode, the refrigerant pressure entering the first heat exchanger 30 is high. When some heat exchange branches are connected in series, the number of parallel heat exchange branches can be reduced, thereby increasing the pressure within the heat exchange branches and increasing the refrigerant flow rate, which in turn accelerates the refrigerant flow and improves the heating efficiency of the first heat exchanger 30. In the second operating mode, the refrigerant pressure entering the first heat exchanger 30 is low. By connecting multiple heat exchange branches in parallel, the flow path of the refrigerant within the first heat exchanger 30 can be shortened, reducing the pressure drop caused by the refrigerant flowing within the first heat exchanger 30. This allows for a reduction in the power requirement of the compressor 20 while maintaining cooling efficiency.

[0150] Furthermore, since at least one drive component in the reversing valve 10 is a shape memory alloy component, the drive assembly 3 can control the deformation of the shape memory alloy component by utilizing the temperature difference of the refrigerant entering the reversing valve 10 in the first and second operating modes. This drives the reversing valve 10 to switch between the first and second operating modes to meet the requirements of different refrigerant flow paths in the first and second operating modes. In other words, the reversing valve 10 can automatically switch between the first and second operating modes according to the switching between heating and cooling. This simplifies the structure of the air conditioning system 100 and improves its performance.

[0151] According to the second aspect embodiment of the air conditioning system 100 of this utility model, at least one driving component is a shape memory alloy component. Compared to an electric drive mechanism, the shape memory alloy component has a simpler structure and lower production and usage costs. This can effectively simplify the structure of the drive assembly 3 and reduce the failure rate of the drive component, thereby reducing the cost of the drive assembly 3 and improving its reliability. Furthermore, the reversing valve 10 can automatically switch between a first operating mode and a second operating mode according to heating or cooling requirements. This simplifies the structure of the air conditioning system 100 and improves its performance.

[0152] In one specific embodiment, the four-way valve 60 includes a first valve port, a second valve port, a third valve port, and a fourth valve port. The exhaust port of the compressor 20 is connected to the first valve port, the return port of the compressor 20 is connected to the second valve port, the third valve port is connected to the first heat exchanger 30 through one of the first refrigerant inlet / outlet pipe 701 and the second refrigerant inlet / outlet pipe 702, and the first heat exchanger 30 is connected to the throttling component 50 through the other of the first refrigerant inlet / outlet pipe 701 and the second refrigerant inlet / outlet pipe 702. The throttling component 50 can be an electronic expansion valve, and the second heat exchanger 40 is connected between the throttling component 50 and the fourth valve port. The four-way valve 60 can control the connection of one of the first, third, and fourth valve ports, and can also control the connection of one of the second, third, and fourth valve ports. When the first and third valve ports are connected, the second and fourth valve ports are connected; when the first and fourth valve ports are connected, the second and third valve ports are connected. Thus, the refrigerant flow direction in the air conditioning system 100 can be controlled by controlling the connection mode of multiple valve ports through the four-way valve 60, so as to switch between the first and second operating modes.

[0153] For example, the four-way valve 60 can control the connection between the first valve port and the third valve port, and the connection between the second valve port and the fourth valve port, so that the air conditioning system 100 enters the first operating mode. At this time, the high-temperature and high-pressure refrigerant discharged through the exhaust port of the compressor 20 can directly enter the first heat exchanger 30 through the four-way valve 60 to release heat and heat the indoor air. Then, it flows through the throttling component 50 for throttling, and after evaporating and absorbing heat in the second heat exchanger 40, it enters the four-way valve 60 through the fourth valve port, and returns to the compressor 20 for circulation through the second valve port. In addition, the four-way valve 60 can control the connection between the first valve port and the fourth valve port, and the connection between the second valve port and the third valve port, so that the air conditioning system 100 enters the second operating mode. At this time, the refrigerant discharged through the exhaust port of the compressor 20 can directly enter the second heat exchanger 40 through the four-way valve 60. The refrigerant releases heat to form a medium-temperature and high-pressure refrigerant. Then, it is throttled into a low-temperature and low-pressure refrigerant through the throttling component 50 and enters the first heat exchanger 30 to evaporate and absorb heat, thereby reducing the temperature of the indoor air. Then, it enters the four-way valve 60 through the third valve port and returns to the compressor 20 through the second valve port for circulation.

[0154] In some embodiments of this utility model, the reversing valve 10 is connected to a first refrigerant inlet / outlet pipe 701, a second refrigerant inlet / outlet pipe 702, and a third refrigerant inlet / outlet pipe 703. Each of the three pipes is connected to an inlet / outlet. Multiple heat exchange branches include at least one first heat exchange branch 301 and at least one second heat exchange branch 302. The first end of the first heat exchange branch 301 is connected to the second refrigerant inlet / outlet pipe 702, and the second end of the first heat exchange branch 301 and the first end of the second heat exchange branch 302 are connected to the third refrigerant inlet / outlet pipe 703. In a first operating mode, the first heat exchange branch 301 and the second heat exchange branch 302 are connected in series. It should be noted that the refrigerant inlet / outlet pipe includes at least one of a manifold and a distributor.

[0155] In some embodiments, there are multiple first heat exchange branches 301 and one second heat exchange branch 302. In the first operating mode and the second operating mode, the multiple first heat exchange branches 301 are arranged in parallel. The second refrigerant inlet / outlet pipe 702 can be connected to the third refrigerant inlet / outlet pipe 703 through the multiple first heat exchange branches 301, thereby realizing the parallel arrangement of the multiple first heat exchange branches 301.

[0156] The second end of the second heat exchange branch 302 is connected to the second refrigerant inlet / outlet pipe 702; or, the second end of the second heat exchange branch 302 is connected to the second refrigerant inlet / outlet pipe 702 through a reversing valve 10. The reversing valve 10 can connect or disconnect the second heat exchange branch 302 and the second refrigerant inlet / outlet pipe 702. The inlet / outlet connected to the second end of the second heat exchange branch 302 is different from the inlet / outlet connected to the refrigerant inlet / outlet pipe.

[0157] In some embodiments, the second end of the second heat exchange branch 302 is connected to the second refrigerant inlet / outlet pipe 702. That is, the two ends of the second heat exchange branch 302 are respectively connected to the second refrigerant inlet / outlet pipe 702 and the third refrigerant inlet / outlet pipe 703. Thus, in the first operating mode, the second refrigerant inlet / outlet pipe 702 can simultaneously deliver refrigerant to the first heat exchange branch 301 (which may be multiple in parallel). The refrigerant flowing through the first heat exchange branch 301 flows into the third refrigerant inlet / outlet pipe 703 and enters the second heat exchange branch 302, thereby forming a flow path in series between the first heat exchange branch 301 and the second heat exchange branch 302. Furthermore, in the second operating mode, one of the second refrigerant inlet / outlet pipe 702 and the third refrigerant inlet / outlet pipe 703 can supply refrigerant to the first heat exchange branch 301 and the second heat exchange branch 302. The refrigerant flowing through multiple first heat exchange branches 301 and second heat exchange branches 302 converges into the other of the second refrigerant inlet / outlet pipe 702 and the third refrigerant inlet / outlet pipe 703, thereby forming a flow path in parallel between the first heat exchange branch 301 and the second heat exchange branch 302.

[0158] In other embodiments, the second end of the second heat exchange branch 302 is connected to the second refrigerant inlet / outlet pipe 702 via a reversing valve 10. The reversing valve 10 can connect or disconnect the second heat exchange branch 302 and the second refrigerant inlet / outlet pipe 702. The inlet / outlet connected to the second end of the second heat exchange branch 302 is different from the inlet / outlet connected to the refrigerant inlet / outlet pipe. Here, the refrigerant inlet / outlet pipe includes a first refrigerant inlet / outlet pipe 701, a second refrigerant inlet / outlet pipe 702, and a third refrigerant inlet / outlet pipe 703. That is, the second end of the second heat exchange branch 302 is connected to the first refrigerant inlet / outlet pipe 701 at different inlets / outlets, and the second end of the second heat exchange branch 302 is connected to the second refrigerant inlet / outlet pipe 702 at different inlets / outlets.

[0159] Therefore, in the first operating mode, the reversing valve 10 can cut off the second heat exchange branch 302 from the second refrigerant inlet / outlet pipe 702, so that the refrigerant in the second refrigerant inlet / outlet pipe 702 cannot directly enter the second heat exchange branch 302. The refrigerant in the second refrigerant inlet / outlet pipe 702 needs to enter the third refrigerant inlet / outlet pipe 703 through multiple first heat exchange branches 301, and then enter the second heat exchange branch 302 through the third refrigerant inlet / outlet pipe 703, thus forming a flow path in which multiple first heat exchange branches 301 are connected in parallel and in series with the second heat exchange branch 302. In the first operating mode, the second heat exchange branch 302 and the second refrigerant inlet / outlet pipe 702 can be connected by the reversing valve 10. In addition, the refrigerant in the third refrigerant inlet / outlet pipe 703 can simultaneously supply refrigerant to the first heat exchange branch 301 (which can be multiple branches) and the second heat exchange branch 302 (which can be multiple branches). The refrigerant flowing through the first heat exchange branch 301 and the second heat exchange branch 302 merges into the second refrigerant inlet / outlet pipe 702, thereby forming a flow path in parallel between the first heat exchange branch 301 and the second heat exchange branch 302.

[0160] In some embodiments of this utility model, the reversing valve 10 is the reversing valve 10 according to specific embodiment one of this utility model. The air conditioning system 100 also includes a one-way valve 80. The side inlet / outlet 12 is connected to one end of the first refrigerant inlet / outlet pipe 701, and the other end of the first refrigerant inlet / outlet pipe 701 is connected to one interface of the four-way valve 60. The first inlet / outlet 13 is connected to one end of the second refrigerant inlet / outlet pipe 702, and the second inlet / outlet 14 is connected to one end of the third refrigerant inlet / outlet pipe 703. The first end of the first heat exchange branch 301 and the second end of the second heat exchange branch 302 are connected to the second refrigerant inlet / outlet pipe 702, and the second end of the first heat exchange branch 301 is connected to the third refrigerant inlet / outlet pipe 703. The first end of the second heat exchange branch 302 is connected to the other end of the third refrigerant inlet / outlet pipe 703. The connection point between the first heat exchange branch 301 and the first refrigerant inlet / outlet pipe 701 is the first connection point 7021. The connection point between the second heat exchange branch 302 and the first refrigerant inlet / outlet pipe 701 is the second connection point 7022. The first connection point 7021 is located between the second connection point 7022 and the reversing valve 10. The one-way valve 80 is located on the second refrigerant inlet / outlet pipe 702 and between the second connection point 7022 and the adjacent first connection point 7021. The one-way valve 80 conducts unidirectionally in the direction closer to the reversing valve 10. The other end of the second refrigerant inlet / outlet pipe 702 is connected to the throttling component 50.

[0161] In the first operating mode, the side inlet / outlet 12 is connected to the exhaust port of the compressor 20, the second heat exchanger 40 is connected to the suction port of the compressor 20, and a first connecting channel is formed between the side inlet / outlet 12 and the first inlet / outlet 13. The side inlet / outlet 12 is the inlet of the first connecting channel, the first inlet / outlet 13 is the outlet of the first connecting channel, and the one-way valve 80 is in the closed state. In the second operating mode, the side inlet / outlet 12 is connected to the suction port of the compressor 20, the second heat exchanger 40 is connected to the exhaust port of the compressor 20, and a second connecting channel is formed between the side inlet / outlet 12 and the second inlet / outlet 14. The second inlet / outlet 14 is the inlet of the first connecting channel, the side inlet / outlet 12 is the outlet of the first connecting channel, and the one-way valve 80 is in the open state.

[0162] Specifically, such as Figures 1 to 3 , Figures 19 to 21 As shown, the end of the first refrigerant inlet / outlet pipe 701 away from the reversing valve 10 is connected to the four-way valve 60, specifically to the third valve port of the four-way valve 60. The end of the second refrigerant inlet / outlet pipe 702 away from the reversing valve 10 is connected to the end of the throttling component 50 away from the second heat exchanger 40, thus forming the refrigerant circulation path of the air conditioning system 100. The two ends of the third refrigerant inlet / outlet pipe 703 are respectively connected to the first end of the second inlet / outlet 14 and the second heat exchange branch 302. The dashed lines indicate open circuits, and the above limitations are incorporated into the description below.

[0163] In the first operating mode, the refrigerant flows from the first refrigerant inlet / outlet pipe 701 toward the reversing valve 10, and enters the second refrigerant inlet / outlet pipe 702 in sequence through the side inlet / outlet 12, the first connecting channel and the first inlet / outlet 13. Since the one-way valve 80 is in the closed state at this time, the refrigerant entering the second refrigerant inlet / outlet pipe 702 is divided into multiple streams and enters multiple first heat exchange branches 301 through the first end of the first heat exchange branches 301, and then flows into the third refrigerant inlet / outlet pipe 703 through the second end of the first heat exchange branches 301. Since the reversing valve 10 is in its first operating mode at this time, the valve core 21 closes the second inlet and outlet 14. The refrigerant in the third refrigerant inlet / outlet pipe 703 cannot enter the reversing valve 10; it can only flow towards the end furthest from the reversing valve 10 and enter the second heat exchange branch 302. The refrigerant entering the second heat exchange branch 302 enters the second refrigerant inlet / outlet pipe 702 through the first end, thus forming a heating flow path with multiple first heat exchange branches 301 connected in parallel and second heat exchange branches 302 connected in series. The refrigerant entering the second refrigerant inlet / outlet pipe 702 through the second heat exchange branch 302 is discharged through the end of the second refrigerant inlet / outlet pipe 702 furthest from the reversing valve 10.

[0164] In the second operating mode, the refrigerant enters the second refrigerant inlet / outlet pipe 702 from the end away from the reversing valve 10. Since the check valve 80 is in the conducting state and the reversing valve 10 is in the second working mode, the valve core 21 closes the first inlet / outlet 13. The refrigerant entering the second refrigerant inlet / outlet pipe 702 is divided into multiple streams. One stream enters the second heat exchange branch 302 through the second end of the second heat exchange branch 302 and enters the third refrigerant inlet / outlet pipe 703 through the first end of the second heat exchange branch 302. The remaining multiple streams of refrigerant enter multiple first heat exchange branches 301 and enter the third refrigerant inlet / outlet pipe 703 through the second end of the first heat exchange branch 301. That is, multiple first heat exchange branches 301 and second heat exchange branches 302 are connected in parallel between the second refrigerant inlet / outlet pipe 702 and the third refrigerant inlet / outlet pipe 703, thereby forming a refrigeration flow path with multiple first heat exchange branches 301 and second heat exchange branches 302 connected in parallel. The refrigerant entering the third refrigerant inlet / outlet pipe 703 enters the second connecting channel through the second inlet / outlet 14, and enters the first refrigerant inlet / outlet pipe 701 through the side inlet / outlet 12, and then exits through the end of the first refrigerant inlet / outlet pipe 701 away from the reversing valve 10.

[0165] The reversing valve 10 according to the first specific embodiment of this utility model has a simple structure, with only one valve chamber 11, one valve core 21 and three inlets and outlets, which can reduce the production difficulty and cost of the reversing valve 10.

[0166] In some embodiments of this utility model, the third refrigerant inlet / outlet pipe 703 includes a distributor 90. The distributor 90 has a main port 901 and multiple distribution ports 902 that are interconnected. The main port 901 is connected to one of the inlet and outlet ports, and the multiple distribution ports 902 are connected to multiple heat exchange branches in equal numbers and in one-to-one correspondence. The refrigerant can be evenly distributed through the multiple distribution ports 902 of the distributor 90, thereby ensuring uniform pressure within the heat exchange branches and guaranteeing the stability and safety of the air conditioning system 100.

[0167] In some embodiments of this utility model, the reversing valve 10 is the reversing valve 10 according to specific embodiment one of this utility model. The air conditioning system 100 further includes: a first one-way valve 80a and a second one-way valve 80b; a side inlet / outlet 12 connected to a main inlet 901; a first inlet / outlet 13 connected to a first end of a second heat exchange branch 302; a second inlet / outlet 14 connected to one end of a first refrigerant inlet / outlet pipe 701; the other end of the first refrigerant inlet / outlet pipe 701 connected to a throttling component 50; a first end of a second refrigerant inlet / outlet pipe 702 connected to the first refrigerant inlet / outlet pipe 701; a second end of a second refrigerant inlet / outlet pipe 702 connected to an interface of a four-way valve 60; the first end of the first heat exchange branch 301 and the second end of the second heat exchange branch 302 connected to the second refrigerant inlet / outlet pipe 702; and the second end of the first heat exchange branch 301 and the second... The first end of the heat exchange branch 302 is connected to multiple distribution ports 902. The connection point between the first heat exchange branch 301 and the second refrigerant inlet / outlet pipe 702 is the first connection point 7021, and the connection point between the second heat exchange branch 302 and the second refrigerant inlet / outlet pipe 702 is the second connection point 7022. The first connection point 7021 is located on the side of the second connection point 7022 away from the first refrigerant inlet / outlet pipe 701. The first one-way valve 80a and the second one-way valve 80b are both located on the second refrigerant inlet / outlet pipe 702. The first one-way valve 80a is located between the second connection point 7022 and the adjacent first connection point 7021, and the second one-way valve 80b is located between the second connection point 7022 and the first refrigerant inlet / outlet pipe 701. The first one-way valve 80a and the second one-way valve 80b are both unidirectionally open in the direction away from the second connection point 7022.

[0168] In the first operating mode, the exhaust port of compressor 20 is connected to the second refrigerant inlet / outlet pipe 702, and a third connecting channel is formed between the side inlet / outlet 12 and the first inlet / outlet 13. The side inlet / outlet 12 is the inlet of the third connecting channel, and the first inlet / outlet 13 is the outlet of the third connecting channel. The first one-way valve 80a is in the closed state, and the second one-way valve 80b is in the open state. In the second operating mode, the suction port of compressor 20 is connected to the second refrigerant inlet / outlet pipe 702, and a fourth connecting channel is formed between the side inlet / outlet 12 and the second inlet / outlet 14. The second inlet / outlet 14 is the inlet of the fourth connecting channel, and the side inlet / outlet 12 is the outlet of the fourth connecting channel. The first one-way valve 80a is in the open state, and the second one-way valve 80b is in the closed state.

[0169] Specifically, such as Figures 1 to 3 , Figure 22 and Figure 23 As shown, the end of the first refrigerant inlet / outlet pipe 701 away from the reversing valve 10 is connected to the end of the throttling component 50 away from the second heat exchanger 40. The end of the second refrigerant inlet / outlet pipe 702 away from the first refrigerant inlet / outlet pipe 701 is connected to the four-way valve 60, specifically to the third valve port of the four-way valve 60, to form the refrigerant circulation path of the air conditioning system 100. For ease of description, the distribution port 902 connected to the second end of the first heat exchange branch 301 is defined as the first distribution port, and the distribution port 902 connected to the first end of the second heat exchange branch 302 is defined as the second distribution port, and these definitions will be incorporated into the following description.

[0170] In the first operating mode, the refrigerant enters the second refrigerant inlet / outlet pipe 702 from the end away from the first refrigerant inlet / outlet pipe 701. Since the first one-way valve 80a is in the closed state at this time, the refrigerant entering the second refrigerant inlet / outlet pipe 702 is divided into multiple streams and enters into multiple first heat exchange branches 301 through the first ends of multiple first heat exchange branches 301. It then enters the distributor 90 through the first heat exchange branches 301 and multiple first distribution ports. The refrigerant entering the distributor 90 is divided into two streams, one of which enters the second heat exchange branch 302 through the second distribution port. Since the reversing valve 10 is in the first working mode at this time, another stream enters the third connecting channel through the main port 901 and the side inlet / outlet 12, and flows out through the first inlet / outlet 13 into the second heat exchange branch 302. The refrigerant entering the second heat exchange branch 302 enters the part of the second refrigerant inlet / outlet pipe 702 located between the first one-way valve 80a and the second one-way valve 80b through the second end, thereby forming a heating flow path with multiple first heat exchange branches 301 connected in parallel and second heat exchange branches 302 connected in series. At this time, the first one-way valve 80a is cut off and the second one-way valve 80b is open, so that the refrigerant flows along the second refrigerant inlet / outlet pipe 702 toward the first refrigerant inlet / outlet pipe 701, and is discharged through the end of the first refrigerant inlet / outlet pipe 701 away from the reversing valve 10.

[0171] In the second operating mode, refrigerant enters the first refrigerant inlet / outlet pipe 701 from the end away from the reversing valve 10. At this time, the second one-way valve 80b is in the cut-off state, and the reversing valve 10 is in the second operating mode. The refrigerant in the first refrigerant inlet / outlet pipe 701 enters the fourth connecting channel through the second inlet / outlet 14, and then enters the distributor 90 through the side inlet / outlet 12 and the main port 901. The refrigerant is then distributed by multiple distribution ports 902 to multiple first heat exchange branches 301 and second heat exchange branches 302. The refrigerant flowing through multiple first heat exchange branches 301 and second heat exchange branches 302 converges into the second refrigerant inlet / outlet pipe 702, thus forming a parallel refrigeration flow path of multiple first heat exchange branches 301 and second heat exchange branches 302. Since the first one-way valve 80a is in the conducting state at this time, the refrigerant in the second refrigerant inlet / outlet pipe 702 flows towards the end away from the first refrigerant inlet / outlet pipe 701 and is discharged.

[0172] In some embodiments of this utility model, the reversing valve 10 is the reversing valve 10 according to specific embodiment two of this utility model. The first side inlet / outlet 12a is connected to one end of the first refrigerant inlet / outlet pipe 701, and the other end of the first refrigerant inlet / outlet pipe 701 is connected to the throttling component 50. The second side inlet / outlet 12b is connected to the second end of the second heat exchange branch 302. The first inlet / outlet 13 is connected to the main port 901. The second inlet / outlet 14 is connected to one end of the second refrigerant inlet / outlet pipe 702, and the other end of the second refrigerant inlet / outlet pipe 702 is connected to one interface of the four-way valve 60. The first end of the first heat exchange branch 301 is connected to the second refrigerant inlet / outlet pipe 702, and the second end of the first heat exchange branch 301 and the first end of the second heat exchange branch 302 are respectively connected to multiple distribution ports 902. In the first operating mode, the exhaust port of compressor 20 is connected to the second refrigerant inlet / outlet pipe 702, and a fifth connecting channel is formed between the first side inlet / outlet 12a and the second side inlet / outlet 12b. The second side inlet / outlet 12b is the inlet of the fifth connecting channel, and the first side inlet / outlet 12a is the outlet of the fifth connecting channel. In the second operating mode, the suction port of compressor 20 is connected to the second refrigerant inlet / outlet pipe 702, and a sixth connecting channel is formed between the first side inlet / outlet 12a and the first inlet / outlet 13. The first side inlet / outlet 12a is the inlet of the sixth connecting channel, and the first inlet / outlet 13 is the outlet of the sixth connecting channel. A seventh connecting channel is formed between the second side inlet / outlet 12b and the second inlet / outlet 14. The second side inlet / outlet 12b is the inlet of the seventh connecting channel, and the second inlet / outlet 14 is the outlet of the seventh connecting channel.

[0173] Specifically, such as Figures 4 to 6 , Figure 24 and Figure 25As shown, the end of the first refrigerant inlet / outlet pipe 701 away from the reversing valve 10 is connected to the end of the throttling component 50 away from the second heat exchanger 40, and the end of the second refrigerant inlet / outlet pipe 702 away from the reversing valve 10 is connected to the four-way valve 60, specifically to the third valve port of the four-way valve 60, so as to form the refrigerant circulation path of the air conditioning system 100.

[0174] In the first operating mode, refrigerant enters the second refrigerant inlet / outlet pipe 702 from the end away from the reversing valve 10. Since the reversing valve 10 is in the first working mode at this time, the first inlet / outlet 13 and the second inlet / outlet 14 are closed. The refrigerant entering the second refrigerant inlet / outlet pipe 702 is divided into multiple streams and enters multiple first heat exchange branches 301 through the first ends of multiple first heat exchange branches 301. It then enters the distributor 90 through the first heat exchange branches 301 and multiple first distribution ports. All the refrigerant entering the distributor 90 enters the second heat exchange branch 302 through the second distribution port. It then enters the fifth connecting channel through the second end and the second side inlet / outlet 12b of the second heat exchange branch 302, thus forming a heating flow path with multiple first heat exchange branches 301 connected in parallel and the second heat exchange branch 302 connected in parallel. The refrigerant entering the fifth connecting channel enters the first refrigerant inlet / outlet pipe 701 through the first side inlet / outlet 12a, and is discharged through the end of the first refrigerant inlet / outlet pipe 701 away from the reversing valve 10.

[0175] In the second operating mode, refrigerant enters the first refrigerant inlet / outlet pipe 701 from the end away from the reversing valve 10. At this time, the reversing valve 10 is in the second operating mode. The refrigerant in the first refrigerant inlet / outlet pipe 701 enters the sixth connecting channel through the first side inlet / outlet 12a and enters the distributor 90 through the first inlet / outlet 13 and the main port 901. The refrigerant entering the distributor 90 is distributed by multiple distribution ports 902 to multiple first heat exchange branches 301 and second heat exchange branches 302. Among them, the multiple streams of refrigerant flowing through multiple first heat exchange branches 301 converge into the second refrigerant inlet / outlet pipe 702. The refrigerant flowing through the second heat exchange branch 302 enters the seventh connecting channel through the second end and the second side inlet / outlet 12b, and then enters the second refrigerant inlet / outlet pipe 702 through the second inlet / outlet 14, thereby forming a parallel refrigeration flow path of multiple first heat exchange branches 301 and second heat exchange branches 302. The refrigerant entering the second refrigerant inlet / outlet pipe 702 flows toward the end away from the reversing valve 10 and is discharged.

[0176] In particular, the reversing valve 10 according to the second embodiment of the present invention can eliminate the one-way valve 80 structure. That is, the reversing valve 10 according to the second embodiment of the present invention can simultaneously have reversing and one-way shut-off functions, which can better reduce the number of parts in the air conditioning system 100, thereby simplifying the structure of the air conditioning system 100 and reducing the layout difficulty of the air conditioning system 100.

[0177] In some embodiments of this utility model, the reversing valve 10 is any one of the reversing valves 3, 4, 5, 6, and 7 of this utility model. The first side inlet / outlet 12a is connected to the main port 901, the second side inlet / outlet 12b is connected to the second end of the second heat exchange branch 302, the third side inlet / outlet 12c is connected to one end of the first refrigerant inlet / outlet pipe 701, the other end of the first refrigerant inlet / outlet pipe 701 is connected to the throttling component 50, the first inlet / outlet 13 is connected to the first end of the second heat exchange branch 302, the second inlet / outlet 14 is connected to one end of the second refrigerant inlet / outlet pipe 702, and the other end of the second refrigerant inlet / outlet pipe 702 is connected to one end of the four-way valve 60. The first end of the first heat exchange branch 301 is connected to the second refrigerant inlet / outlet pipe 702, and the second end of the first heat exchange branch 301 and the first end of the second heat exchange branch 302 are connected to multiple distribution ports 902. In the first operating mode, the exhaust port of the compressor 20 is connected to the second refrigerant inlet / outlet pipe 702, and an eighth connecting channel is formed between the first side inlet / outlet 12a and the first inlet / outlet 13. The first side inlet / outlet 12a is the inlet of the eighth connecting channel, and the first inlet / outlet 13 is the outlet of the eighth connecting channel. A ninth connecting channel is formed between the third side inlet / outlet 12c and the second side inlet / outlet 12b. The second side inlet / outlet 12b is the inlet of the ninth connecting channel, and the third side inlet / outlet 12c is the outlet of the ninth connecting channel. In the second operating mode, the suction port of compressor 20 is connected to the second refrigerant inlet / outlet pipe 702, and a tenth connecting channel is formed between the third side inlet / outlet 12c and the first side inlet / outlet 12a. The third side inlet / outlet 12c is the inlet of the tenth connecting channel, and the first side inlet / outlet 12a is the outlet of the tenth connecting channel. An eleventh connecting channel is formed between the second side inlet / outlet 12b and the second inlet / outlet 14. The second side inlet / outlet 12b is the inlet of the eleventh connecting channel, and the second inlet / outlet 14 is the outlet of the eleventh connecting channel.

[0178] Specifically, such as Figures 7 to 15 , Figure 26 and Figure 27 As shown, the end of the first refrigerant inlet / outlet pipe 701 away from the reversing valve 10 is connected to the end of the throttling component 50 away from the second heat exchanger 40, and the end of the second refrigerant inlet / outlet pipe 702 away from the reversing valve 10 is connected to the four-way valve 60, specifically to the third valve port of the four-way valve 60, so as to form the refrigerant circulation path of the air conditioning system 100.

[0179] In the first operating mode, refrigerant enters the second refrigerant inlet / outlet pipe 702 from the end furthest from the reversing valve 10. Since the reversing valve 10 is in the first operating mode at this time, the second inlet / outlet 14 is closed. The refrigerant entering the second refrigerant inlet / outlet pipe 702 is divided into multiple streams, each entering the first end of a first heat exchange branch 301. It then enters the distributor 90 through the first heat exchange branch 301 and multiple first distribution ports. The refrigerant in the 0 channel is divided into two streams. One stream enters the second heat exchange branch 302 through the second distribution port, and the other stream enters the eighth connecting channel through the main port 901 and the first side inlet / outlet 12a, and then flows out through the first inlet / outlet 13 into the second heat exchange branch 302. The refrigerant in the second heat exchange branch 302 then enters the ninth connecting channel through the second end and the third side inlet / outlet 12c, thus forming multiple parallel first heat exchange branches 301 and parallel second heat exchange branches 302 heating flow paths. The refrigerant entering the ninth connecting channel enters the first refrigerant inlet / outlet pipe 701 through the second side inlet / outlet 12b, and then exits through the end of the first refrigerant inlet / outlet pipe 701 away from the reversing valve 10.

[0180] In the second operating mode, refrigerant enters the first refrigerant inlet / outlet pipe 701 from the end away from the reversing valve 10. At this time, the reversing valve 10 is in the second operating mode. The refrigerant in the first refrigerant inlet / outlet pipe 701 enters the tenth connecting channel through the third side inlet / outlet 12c and enters the distributor 90 through the first side inlet / outlet 12a and the main port 901. The refrigerant entering the distributor 90 is distributed by multiple distribution ports 902 to multiple first heat exchange branches 301 and second heat exchange branches 302. Among them, the multiple streams of refrigerant flowing through multiple first heat exchange branches 301 converge into the second refrigerant inlet / outlet pipe 702. The refrigerant flowing through the second heat exchange branch 302 enters the eleventh connecting channel through the second end and the second side inlet / outlet 12b, and then enters the second refrigerant inlet / outlet pipe 702 through the second inlet / outlet 14, thereby forming a parallel refrigeration flow path of multiple first heat exchange branches 301 and second heat exchange branches 302. The refrigerant entering the second refrigerant inlet / outlet pipe 702 flows toward the end away from the reversing valve 10 and is discharged.

[0181] Specifically, according to the reversing valve 10 of specific embodiments three, four, five, six and seven of this utility model, on the basis of realizing refrigerant reversal, in the first operating mode, the second distribution port and the first inlet and outlet 13 simultaneously deliver refrigerant to the second heat exchange branch 302, which can increase the flow rate in the second heat exchange branch 302 and avoid insufficient refrigerant flow due to the small size of the second distribution port, thereby improving heating efficiency.

[0182] It should be noted that in the reversing valve 10 of specific embodiment four, during the opening and shut-off of the first operating mode, when the refrigerant enters the first valve chamber 11a from the first side inlet / outlet 12a, since the first connecting port 151 is not yet closed, some refrigerant can enter the first sub-chamber 153 through the first connecting port 151 and push the slider 4 towards the second position, causing the slider 4 to close the third connecting port 1531. This prevents the refrigerant from being discharged before entering the second heat exchange branch 302, ensuring that all refrigerant entering the distributor 90 can flow stably through the second heat exchange branch 302 before being discharged. In the second operating mode, when the refrigerant enters the second sub-chamber 154 from the third side inlet / outlet 12c, the slider 4 can be pushed towards the first position to open the third connecting port 1531, allowing the first valve chamber 11a to connect with the second sub-chamber 154 through the first sub-chamber 153, forming a connected tenth connecting channel.

[0183] In some embodiments of this utility model, the reversing valve 10 is a reversing valve 10 according to specific embodiment eight of this utility model. The first side inlet / outlet 12a is connected to the second end of the second heat exchange branch 302, the second side inlet / outlet 12b is connected to the main port 901, the third side inlet / outlet 12c is connected to one end of the first refrigerant inlet / outlet pipe 701, the other end of the first refrigerant inlet / outlet pipe 701 is connected to the throttling component 50, the fourth side inlet / outlet 12d is connected to the first end of one of the first heat exchange branches 301, the first ends of the remaining first heat exchange branches 301 are connected to the second refrigerant inlet / outlet pipe 702, the first inlet / outlet 13 is connected to one end of the second refrigerant inlet / outlet pipe 702, the other end of the second refrigerant inlet / outlet pipe 702 is connected to one interface of the four-way valve 60, the second inlet / outlet 14 is connected to the first end of the second heat exchange branch 302, and the second end of the first heat exchange branch 301 and the first end of the second heat exchange branch 302 are respectively connected to multiple distribution ports 902.

[0184] In the first operating mode, the exhaust port of compressor 20 is connected to the second refrigerant inlet / outlet pipe 702. A twelfth connecting channel is formed between the first inlet / outlet 13 and the fourth side inlet / outlet 12d, with the first inlet / outlet 13 being the inlet of the twelfth connecting channel and the fourth side inlet / outlet 12d being the outlet of the twelfth connecting channel. A thirteenth connecting channel is formed between the first side inlet / outlet 12a and the third side inlet / outlet 12c, with the first side inlet / outlet 12a being the inlet of the thirteenth connecting channel and the third side inlet / outlet 12c being the outlet of the thirteenth connecting channel. A fourteenth connecting channel is formed between the second side inlet / outlet 12b and the second inlet / outlet 14, with the second side inlet / outlet 12b being the inlet of the fourteenth connecting channel and the second inlet / outlet 14 being the outlet of the fourteenth connecting channel. In the second operating mode… In this configuration, the suction port of compressor 20 is connected to the second refrigerant inlet / outlet pipe 702. A fifteenth connecting channel is formed between the fourth side inlet / outlet 12d and the first inlet / outlet 13, with the fourth side inlet / outlet 12d being the inlet of the fifteenth connecting channel and the first inlet / outlet 13 being the outlet of the fifteenth connecting channel. A sixteenth connecting channel is formed between the first side inlet / outlet 12a and the first inlet / outlet 13 through the fourth connecting port 1121, with the first side inlet / outlet 12a being the inlet of the sixteenth connecting channel and the first inlet / outlet 13 being the outlet of the sixteenth connecting channel. A seventeenth connecting channel is formed between the third side inlet / outlet 12c and the second side inlet / outlet 12b, with the third side inlet / outlet 12c being the inlet of the seventeenth connecting channel and the second side inlet / outlet 12b being the outlet of the seventeenth connecting channel.

[0185] Specifically, such as Figures 16 to 18 , Figure 28 and Figure 29 As shown, the end of the first refrigerant inlet / outlet pipe 701 away from the reversing valve 10 is connected to the end of the throttling component 50 away from the second heat exchanger 40, and the end of the second refrigerant inlet / outlet pipe 702 away from the reversing valve 10 is connected to the four-way valve 60, specifically to the third valve port of the four-way valve 60, so as to form the refrigerant circulation path of the air conditioning system 100.

[0186] In the first operating mode, refrigerant enters the second refrigerant inlet / outlet pipe 702 from the end furthest from the reversing valve 10. Since the reversing valve 10 is in the first operating mode at this time, the fourth connecting port 1121 is closed. The refrigerant entering the second refrigerant inlet / outlet pipe 702 is divided into multiple streams. One stream enters the twelfth connecting channel through the first inlet / outlet 13 and then enters one of the first heat exchange branches 301 through the fourth side inlet / outlet 12d. The remaining streams enter the other multiple first heat exchange branches 301 respectively. The refrigerant entering the multiple first heat exchange branches 301... The refrigerant enters the distributor 90 through multiple first distribution ports. Inside the distributor 90, the refrigerant is divided into two streams: one stream enters the second heat exchange branch 302 through a second distribution port, and the other stream enters the fourteenth connecting channel through the main port 901 and the second side inlet / outlet 12b, then flows out through the second inlet / outlet 14 and back into the second heat exchange branch 302. The refrigerant in the second heat exchange branch 302 then enters the thirteenth connecting channel through the second end and the first side inlet / outlet 12a, thus forming multiple parallel first heat exchange branches 301 and parallel second heat exchange branches 302, creating a heating flow path. The refrigerant entering the thirteenth connecting channel enters the first refrigerant inlet / outlet pipe 701 through the third side inlet / outlet 12c and exits through the end of the first refrigerant inlet / outlet pipe 701 furthest from the reversing valve 10.

[0187] In the second operating mode, refrigerant enters the first refrigerant inlet / outlet pipe 701 from the end away from the reversing valve 10. At this time, the reversing valve 10 is in the second operating mode. The refrigerant in the first refrigerant inlet / outlet pipe 701 enters the seventeenth connecting channel through the third side inlet / outlet 12c and enters the distributor 90 through the second side inlet / outlet 12b and the main port 901. The refrigerant entering the distributor 90 is distributed by multiple distribution ports 902 to multiple first heat exchange branches 301 and second heat exchange branches 302. The refrigerant entering the first heat exchange branch 301, which is connected to the fourth side inlet / outlet 12d, enters the fifteenth connecting channel through the fourth side inlet / outlet 12d, and then enters the second refrigerant inlet / outlet pipe 702 through the first inlet / outlet 13. Multiple streams of refrigerant from the other first heat exchange branches 301 converge into the second refrigerant inlet / outlet pipe 702. The refrigerant flowing through the second heat exchange branch 302 enters the sixteenth connecting channel through the second end and the first side inlet / outlet 12a, and then enters the second refrigerant inlet / outlet pipe 702 through the first inlet / outlet 13. This forms a parallel refrigeration flow path with multiple first heat exchange branches 301 and second heat exchange branches 302. The refrigerant entering the second refrigerant inlet / outlet pipe 702 flows towards the end furthest from the reversing valve 10 and is then discharged.

[0188] In the reversing valve 10 of the eighth specific embodiment of this utility model, the shape memory alloy part is disposed in the third sub-cavity 111. When heating, the third sub-cavity 111 is at the exhaust temperature of the compressor 20, which is relatively high. When cooling, the third sub-cavity 111 is at the return gas temperature of the compressor 20, which is relatively low. This creates a larger temperature difference in the third sub-cavity 111 to ensure the reliability of the shape memory alloy part in terms of expansion and contraction due to temperature changes.

[0189] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0190] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0191] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A reversing valve, characterized in that, include: The valve body forms a valve cavity and an inlet / outlet communicating with the valve cavity. The number of the inlet / outlet is not less than three, and multiple inlets / outlets can be connected through the valve cavity to form multiple different communication channels. A valve core assembly, movably disposed within the valve cavity, to cut off or open at least a portion of the communication channel, so that the reversing valve switches between at least a first operating mode and a second operating mode; A drive assembly is disposed within the valve cavity and is used to drive the valve core assembly to move. The drive assembly includes at least one drive element, which is a shape memory alloy component. One end of the drive element is connected to the valve core assembly and the other end is connected to the valve body.

2. The reversing valve according to claim 1, characterized in that, The drive assembly includes multiple drive components, including a first drive component and a second drive component. The first drive component is a return spring, and the second drive component is a shape memory alloy component. The first drive component and the second drive component are used to drive the valve core assembly to move in opposite directions. And / or, the shape memory alloy component is configured to elongate or shorten due to temperature changes in the refrigerant flowing through the reversing valve.

3. The reversing valve according to claim 1, characterized in that, The plurality of inlets and outlets include a first inlet and outlet, a second inlet and outlet, and a side inlet and outlet. The first inlet and outlet and the second inlet and outlet are respectively located on opposite sides of the valve body along a first direction. The side inlet and outlet are located on the outer peripheral wall of the valve body. The drive assembly is used to drive the valve core assembly to move along the first direction to control the opening and closing of at least one of the first inlet and outlet and the second inlet and outlet.

4. The reversing valve according to claim 3, characterized in that, The driving element is spiral-shaped, and the centerline of the driving element extends along the first direction.

5. The reversing valve according to claim 4, characterized in that, The drive component is sleeved on the outer periphery of the valve core assembly.

6. The reversing valve according to claim 5, characterized in that, The valve core assembly has a first limiting block on its outer peripheral surface and a second limiting block on its inner peripheral surface. The driving member is located between the first limiting block and the second limiting block, with one end of the driving member connected to the first limiting block and the other end of the driving member connected to the second limiting block.

7. The reversing valve according to claim 3, characterized in that, The drive assembly includes at least one first drive member and at least one second drive member. The number of first drive members and second drive members are the same and they correspond one-to-one. The first drive members and the corresponding second drive members form a drive member group. The first drive members and the second drive members in the same drive member group are arranged along the first direction. The first drive members and the second drive members in the same drive member group are used to drive the valve core assembly to move in opposite directions along the first direction.

8. The reversing valve according to claim 7, characterized in that, The valve core assembly includes a valve core, and the drive assembly is provided with a set of first and second drive members for driving the valve core to move in opposite directions along a first direction; Alternatively, the valve core assembly includes two valve cores, which are spaced apart along the first direction and move independently of each other. The drive unit group has two sets and corresponds one-to-one with the two valve cores. The first drive unit and the second drive unit of each set of the drive unit group are used to drive the corresponding valve core to move in opposite directions along the first direction. Alternatively; the valve core assembly includes two valve cores, which are arranged and connected along a first direction. The drive unit assembly is provided in a set, with one end of the first drive unit and one end of the second drive unit both connected to the valve body. The other end of the first drive unit is connected to one of the valve cores, and the other end of the second drive unit is connected to the other valve core. The first drive unit and the second drive unit are used to drive the two valve cores to move synchronously in opposite directions along the first direction.

9. The reversing valve according to claim 3, characterized in that, The valve core assembly includes a valve core that is movable along a first direction to control the opening and closing of the first inlet and outlet and to control the opening and closing of the second inlet and outlet, wherein the side inlet and outlet are provided with; In the first operating mode, the valve core opens the first inlet and outlet and closes the second inlet and outlet, and the first inlet and outlet are connected to the side inlet and outlet; In the second operating mode, the valve core closes the first inlet and outlet and opens the second inlet and outlet, and the second inlet and outlet are connected to the side inlet and outlet.

10. The reversing valve according to claim 3, characterized in that, The valve body has two valve chambers arranged along a first direction, namely a first valve chamber and a second valve chamber. The valve body also has a connecting cavity, which is located between the first valve chamber and the second valve chamber and connects the first valve chamber and the second valve chamber. The connecting cavity has a first connecting port connected to the first valve chamber and a second connecting port connected to the second valve chamber. There are multiple side inlets and outlets, including a first side inlet and outlet and a second side inlet and outlet. The first inlet and outlet and the first side inlet and outlet are located on the wall of the first valve chamber, and the second inlet and outlet and the second side inlet and outlet are located on the wall of the second valve chamber. The valve core assembly includes two valve cores, namely a first valve core and a second valve core. The first valve core is movably disposed in the first valve cavity along a first direction to control the connection and disconnection between the first side inlet and outlet and the first inlet and outlet and the communicating cavity. The second valve core is movably disposed in the second valve cavity along the first direction to control the connection and disconnection between the second side inlet and outlet and the second inlet and outlet and the communicating cavity.

11. The reversing valve according to claim 10, characterized in that, The first valve core is used to control the opening and closing of the first inlet and outlet and to control the opening and closing of the first connecting port. The second valve core is used to control the opening and closing of the second inlet and outlet and to control the opening and closing of the second connecting port.

12. The reversing valve according to claim 11, characterized in that, In the first working mode, the first valve core closes the first inlet and outlet and opens the first communication port, the second valve core closes the second inlet and outlet and opens the second communication port, and the first side inlet and outlet are connected to the second side inlet and outlet through the communication cavity; In the second operating mode, the first valve core opens the first inlet and outlet and closes the first connecting port, and the first side inlet and outlet are connected to the first inlet and outlet; the second valve core opens the second inlet and outlet and closes the second connecting port, and the second side inlet and outlet are connected to the second inlet and outlet.

13. The reversing valve according to claim 11, characterized in that, The side inlet and outlet also includes a third side inlet and outlet, which is located on the side wall of the communicating cavity and communicates with the communicating cavity; In the first working mode, the first valve core opens the first inlet and outlet and closes the first communication port; the second valve core closes the second inlet and outlet and opens the second communication port, the first side inlet and outlet are connected to the first inlet and outlet, and the third side inlet and outlet are connected to the second side inlet and outlet through the communication cavity; In the second operating mode, the first valve core closes the first inlet and outlet and opens the first communication port; the second valve core opens the second inlet and outlet and closes the second communication port; the first side inlet and outlet are connected to the third side inlet and outlet through the communication cavity; and the second side inlet and outlet are connected to the second inlet and outlet.

14. The reversing valve according to claim 13, characterized in that, The communicating cavity includes a first sub-cavity and a second sub-cavity arranged along a first direction. The first valve cavity communicates with the second valve cavity through the first sub-cavity and the second sub-cavity in sequence. One end of the first sub-cavity connected to the first valve cavity forms the first communicating port, and the other end of the first sub-cavity connected to the second sub-cavity forms the third communicating port. A slider is provided in the first sub-cavity. The slider is spaced apart from the first communicating port. The slider moves between a first position and a second position along the first direction. In the first position, the slider opens the third communicating port. In the second position, the slider closes the third communicating port. The third side inlet / outlet is provided on the wall of the second sub-cavity and communicates with the second sub-cavity.

15. The reversing valve according to claim 14, characterized in that, The slider is configured to be driven by the fluid pressure difference between the first valve chamber and the second sub-chamber.

16. The reversing valve according to claim 10, characterized in that, The first valve core is connected to the second valve core or moves independently of each other.

17. The reversing valve according to claim 16, characterized in that, The first valve core is connected to the second valve core, and the second valve core is movably disposed on the first valve core relative to the first valve core along a first direction. The reversing valve includes an adjusting spring, one end of which is connected to the first valve core and the other end of which is connected to the second valve core. The adjusting spring is used to drive the first valve core and the second valve core to slide in a direction away from each other along the first direction.

18. The reversing valve according to claim 10, characterized in that, The first valve chamber includes a third sub-chamber and a fourth sub-chamber arranged and connected along a first direction. The fourth sub-chamber is connected between the third sub-chamber and the connecting chamber. The plurality of side inlets and outlets also include a third side inlet and outlet and a fourth side inlet and outlet. The third side inlet and outlet are disposed on the wall of the connecting chamber and are connected to the connecting chamber. The fourth side inlet and outlet and the first inlet and outlet are disposed on the wall of the third sub-chamber. The first inlet and outlet are connected to the fourth side inlet and outlet through the third sub-chamber. The first side inlet and outlet are disposed on the wall of the fourth sub-chamber and are connected to the fourth sub-chamber. One end of the fourth sub-chamber connected to the third sub-chamber forms a fourth connecting port. The first valve core is used to control the opening and closing of the first connecting port and the fourth connecting port. The second valve core is used to control the opening and closing of the second inlet and outlet and the second connecting port. In the first working mode, the first valve core opens the first communication port and closes the fourth communication port, the second valve core opens the second inlet and outlet and closes the second communication port, the first side inlet and outlet are connected to the third side inlet and outlet through the communication cavity, and the second side inlet and outlet are connected to the second inlet and outlet. In the second operating mode, the first valve core closes the first communication port and opens the fourth communication port, the second valve core closes the second inlet and outlet and opens the second communication port, the first side inlet and outlet are connected to the fourth side inlet and outlet, and the second side inlet and outlet are connected to the third side inlet and outlet through the communication cavity.

19. An air conditioning system, characterized in that, include: The system comprises a compressor, a first heat exchanger, a second heat exchanger, a throttling component, a four-way valve, and a reversing valve according to any one of claims 1-18, wherein the compressor's discharge port, the compressor's suction port, the second heat exchanger, and the reversing valve are respectively connected to the four ports of the four-way valve; the throttling component is connected between the first heat exchanger and the second heat exchanger; the first heat exchanger includes multiple heat exchange branches; a portion of the inlet and outlet of the reversing valve is connected to the first heat exchanger and is used to change the refrigerant flow path within the first heat exchanger; the air conditioning system has a first operating mode and a second operating mode; in the first operating mode, the reversing valve is in the first operating mode to connect at least a portion of the heat exchange branches in series; and in the second operating mode, the reversing valve is in the second operating mode to connect multiple heat exchange branches in parallel.

20. The air conditioning system according to claim 19, characterized in that, The reversing valve is connected to a first refrigerant inlet / outlet pipe, a second refrigerant inlet / outlet pipe, and a third refrigerant inlet / outlet pipe. The first refrigerant inlet / outlet pipe, the second refrigerant inlet / outlet pipe, and the third refrigerant inlet / outlet pipe are respectively connected to one of the inlet / outlet pipes. The multiple heat exchange branches include at least one first heat exchange branch and at least one second heat exchange branch. The first end of the first heat exchange branch is connected to the second refrigerant inlet / outlet pipe, and the second end of the first heat exchange branch and the first end of the second heat exchange branch are connected to the third refrigerant inlet / outlet pipe. In the first operating mode, the first heat exchange branch and the second heat exchange branch are connected in series. The second end of the second heat exchange branch is connected to the second refrigerant inlet / outlet pipe; Alternatively, the second end of the second heat exchange branch is connected to the second refrigerant inlet / outlet pipe via the reversing valve. The reversing valve can connect or disconnect the second heat exchange branch and the second refrigerant inlet / outlet pipe. The inlet / outlet connected to the second end of the second heat exchange branch is different from the inlet / outlet connected to the refrigerant inlet / outlet pipe.

21. The air conditioning system according to claim 20, characterized in that, The reversing valve is the reversing valve according to claim 9. The air conditioning system further includes a one-way valve. The side inlet / outlet is connected to one end of the first refrigerant inlet / outlet pipe, and the other end of the first refrigerant inlet / outlet pipe is connected to one interface of the four-way valve. The first inlet / outlet is connected to one end of the second refrigerant inlet / outlet pipe, and the second inlet / outlet is connected to one end of the third refrigerant inlet / outlet pipe. The first end of the first heat exchange branch and the second end of the second heat exchange branch are connected to the second refrigerant inlet / outlet pipe, and the second end of the first heat exchange branch is connected to the third refrigerant inlet / outlet pipe. The first end of the heat exchange branch is connected to the other end of the third refrigerant inlet / outlet pipe. The connection point between the first heat exchange branch and the first refrigerant inlet / outlet pipe is the first connection point. The connection point between the second heat exchange branch and the first refrigerant inlet / outlet pipe is the second connection point. The first connection point is located between the second connection point and the reversing valve. The one-way valve is located on the second refrigerant inlet / outlet pipe and between the second connection point and the adjacent first connection point. The one-way valve is unidirectionally open in the direction closer to the reversing valve. The other end of the second refrigerant inlet / outlet pipe is connected to the throttling component. In the first operating mode, the side inlet / outlet is connected to the exhaust port of the compressor, the second heat exchanger is connected to the suction port of the compressor, a first connecting channel is formed between the side inlet / outlet and the first inlet / outlet, the side inlet / outlet is the inlet of the first connecting channel, the first inlet / outlet is the outlet of the first connecting channel, and the one-way valve is in the closed state. In the second operating mode, the side inlet / outlet is connected to the compressor's suction port, the second heat exchanger is connected to the compressor's exhaust port, a second connecting channel is formed between the side inlet / outlet and the second inlet / outlet, the second inlet / outlet is the inlet of the first connecting channel, the side inlet / outlet is the outlet of the first connecting channel, and the one-way valve is in the open state.

22. The air conditioning system according to claim 20, characterized in that, The third refrigerant inlet / outlet pipe includes a distributor, which has a main port and multiple distribution ports that are interconnected. The main port is connected to one of the inlet / outlet ports, and the multiple distribution ports are connected to the same number of the multiple heat exchange branches in a one-to-one correspondence.

23. The air conditioning system according to claim 22, characterized in that, The reversing valve is the reversing valve according to claim 9. The air conditioning system further includes: a first check valve and a second check valve. The side inlet / outlet is connected to the main port. The first inlet / outlet is connected to the first end of the second heat exchange branch. The second inlet / outlet is connected to one end of the first refrigerant inlet / outlet pipe. The other end of the first refrigerant inlet / outlet pipe is connected to the throttling component. The first end of the second refrigerant inlet / outlet pipe is connected to the first refrigerant inlet / outlet pipe. The second end of the second refrigerant inlet / outlet pipe is connected to one interface of the four-way valve. The first end of the first heat exchange branch and the second end of the second heat exchange branch are connected to the second refrigerant inlet / outlet pipe. The second end of the first heat exchange branch and the first end of the second heat exchange branch are respectively connected to multiple distribution ports. The connection point between the first heat exchange branch and the second refrigerant inlet / outlet pipe is the first connection point, and the connection point between the second heat exchange branch and the second refrigerant inlet / outlet pipe is the second connection point. The first one-way valve and the second one-way valve are both located on the second refrigerant inlet / outlet pipe. The first one-way valve is located between the second connection point and the adjacent first connection point, and the second one-way valve is located between the second connection point and the first refrigerant inlet / outlet pipe. Both the first one-way valve and the second one-way valve are unidirectionally open in the direction away from the second connection point. In the first operating mode, the compressor's exhaust port is connected to the second refrigerant inlet / outlet pipe, and a third connecting channel is formed between the side inlet / outlet and the first inlet / outlet. The side inlet / outlet is the inlet of the third connecting channel, the first inlet / outlet is the outlet of the third connecting channel, the first check valve is in the closed state, and the second check valve is in the open state. In the second operating mode, the compressor's suction port is connected to the second refrigerant inlet / outlet pipe, and a fourth connecting channel is formed between the side inlet / outlet and the second inlet / outlet. The second inlet / outlet is the inlet of the fourth connecting channel, and the side inlet / outlet is the outlet of the fourth connecting channel. The first one-way valve is in the open state, and the second one-way valve is in the closed state.

24. The air conditioning system according to claim 22, characterized in that, The reversing valve is the reversing valve according to claim 12, wherein the first side inlet and outlet are connected to one end of the first refrigerant inlet and outlet pipe, the other end of the first refrigerant inlet and outlet pipe is connected to the throttling component, the second side inlet and outlet are connected to the second end of the second heat exchange branch, the first inlet and outlet are connected to the main port, the second inlet and outlet are connected to one end of the second refrigerant inlet and outlet pipe, the other end of the second refrigerant inlet and outlet pipe is connected to one interface of the four-way valve, the first end of the first heat exchange branch is connected to the second refrigerant inlet and outlet pipe, and the second end of the first heat exchange branch and the first end of the second heat exchange branch are respectively connected to the plurality of the distribution ports; In the first operating mode, the compressor's exhaust port is connected to the second refrigerant inlet / outlet pipe, and a fifth connecting channel is formed between the first side inlet / outlet and the second side inlet / outlet. The second side inlet / outlet is the inlet of the fifth connecting channel, and the first side inlet / outlet is the outlet of the fifth connecting channel. In the second operating mode, the compressor's suction port is connected to the second refrigerant inlet / outlet pipe, and a sixth connecting channel is formed between the first side inlet / outlet and the first inlet / outlet. The first side inlet / outlet is the inlet of the sixth connecting channel, and the first inlet / outlet is the outlet of the sixth connecting channel. A seventh connecting channel is formed between the second side inlet / outlet and the second inlet / outlet. The second side inlet / outlet is the inlet of the seventh connecting channel, and the second inlet / outlet is the outlet of the seventh connecting channel.

25. The air conditioning system according to claim 22, characterized in that, The reversing valve is a reversing valve according to any one of claims 13-17, wherein the first side inlet / outlet is connected to the main port, the second side inlet / outlet is connected to the second end of the second heat exchange branch, the third side inlet / outlet is connected to one end of the first refrigerant inlet / outlet pipe, the other end of the first refrigerant inlet / outlet pipe is connected to the throttling component, the first inlet / outlet is connected to the first end of the second heat exchange branch, the second inlet / outlet is connected to one end of the second refrigerant inlet / outlet pipe, the other end of the second refrigerant inlet / outlet pipe is connected to one interface of the four-way valve, the first end of the first heat exchange branch is connected to the second refrigerant inlet / outlet pipe, and the second end of the first heat exchange branch and the first end of the second heat exchange branch are connected to the plurality of distribution ports; In the first operating mode, the compressor's exhaust port is connected to the second refrigerant inlet / outlet pipe, and an eighth connecting channel is formed between the first side inlet / outlet and the first side outlet / inlet, with the first side inlet / outlet being the inlet of the eighth connecting channel and the first side outlet / inlet being the outlet of the eighth connecting channel; a ninth connecting channel is formed between the third side inlet / outlet and the second side inlet / outlet, with the second side inlet / outlet being the inlet of the ninth connecting channel and the third side inlet / outlet being the outlet of the ninth connecting channel; In the second operating mode, the compressor's suction port is connected to the second refrigerant inlet / outlet pipe, and the third side inlet / outlet forms a tenth connecting channel with the first side inlet / outlet. The third side inlet / outlet is the inlet of the tenth connecting channel, and the first side inlet / outlet is the outlet of the tenth connecting channel. An eleventh connecting channel is formed between the second side inlet and outlet and the second side outlet, the second side inlet and outlet being the inlet of the eleventh connecting channel and the second inlet and outlet being the outlet of the eleventh connecting channel.

26. The air conditioning system according to claim 22, characterized in that, The reversing valve is the reversing valve according to claim 18, wherein the first side inlet / outlet is connected to the second end of the second heat exchange branch, the second side inlet / outlet is connected to the main port, the third side inlet / outlet is connected to one end of the first refrigerant inlet / outlet pipe, the other end of the first refrigerant inlet / outlet pipe is connected to the throttling component, the fourth side inlet / outlet is connected to the first end of one of the first heat exchange branches, the first ends of the remaining first heat exchange branches are connected to the second refrigerant inlet / outlet pipe, the first inlet / outlet is connected to one end of the second refrigerant inlet / outlet pipe, the other end of the second refrigerant inlet / outlet pipe is connected to one interface of the four-way valve, the second inlet / outlet is connected to the first end of the second heat exchange branch, and the second end of the first heat exchange branch and the first end of the second heat exchange branch are respectively connected to multiple distribution ports; In the first operating mode, the compressor's exhaust port is connected to the second refrigerant inlet / outlet pipe, and a twelfth connecting channel is formed between the first inlet / outlet and the fourth side inlet / outlet, with the first inlet / outlet being the inlet of the twelfth connecting channel and the fourth side inlet / outlet being the outlet of the twelfth connecting channel; a thirteenth connecting channel is formed between the first side inlet / outlet and the third side inlet / outlet, with the first side inlet / outlet being the inlet of the thirteenth connecting channel and the third side inlet / outlet being the outlet of the thirteenth connecting channel; The two side inlets and outlets form a fourteenth connecting channel, with the two side inlets and outlets being the inlet of the fourteenth connecting channel and the two inlets and outlets being the outlet of the fourteenth connecting channel. In the second operating mode, the compressor's suction port is connected to the second refrigerant inlet / outlet pipe, and the fourth side inlet / outlet forms a fifteenth connecting channel with the first inlet / outlet. The fourth side inlet / outlet is the inlet of the fifteenth connecting channel, and the first inlet / outlet is the outlet of the fifteenth connecting channel. The first side inlet and outlet forms a sixteenth connecting channel with the first inlet and outlet through the fourth connecting port. The first side inlet and outlet is the inlet of the sixteenth connecting channel, and the first inlet and outlet is the outlet of the sixteenth connecting channel. The third side inlet and outlet forms a seventeenth connecting channel with the second side inlet and outlet. The third side inlet and outlet is the inlet of the seventeenth connecting channel, and the second side inlet and outlet is the outlet of the seventeenth connecting channel.

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