Compressor and refrigerating device comprising same

[0037] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention.

[0038] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply the pointed device Or the element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0039] In the description of the present invention, it should be noted that the terms "installation", "connected" and "connected" should be understood in a broad sense, unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood in specific situations.

[0040] Reference below Figure 1-Figure 6 The refrigeration device 100 according to an embodiment of the present invention is described. The refrigeration device 100 can be used for cooling and heating indoor air.

[0041] Such as Figure 1-Figure 6 As shown, the refrigeration device 100 according to the embodiment of the present invention includes: a compressor 10, a reversing assembly 20, an indoor heat exchanger 30, an outdoor heat exchanger 40, and a switching flow channel 50.

[0042] Such as Figure 1-Figure 4 As shown, the compressor 10 may include a housing 110, a first cylinder 120, and a second cylinder 130, and the housing 110 may be provided with an exhaust port and an intake port. Specifically, the compressor 10 may further include an accumulator 140, and the suction port on the housing 110 is connected to the outlet port on the accumulator 140. The accumulator 140 can separate the gaseous refrigerant and the liquid refrigerant. The liquid refrigerant can be stored in the lower part of the accumulator 140 by the action of gravity, and the gaseous refrigerant can enter the compressor through the air outlet on the upper part of the accumulator 140 10 in. The compressor 10 can compress the refrigerant, and the compressed refrigerant can be discharged through the exhaust port.

[0043] Such as Figure 1-Figure 4 As shown, both the first cylinder 120 and the second cylinder 130 can be arranged in the housing 110, the suction port can communicate with the suction passage of the first cylinder 120, and the refrigerant sucked in through the suction passage can be in the first cylinder 120 Perform compression. The first sliding plate in the first cylinder 120 always abuts on the first piston. Therefore, when the refrigeration device 100 performs cooling and heating operations, the first cylinder 120 can both participate in the compression of the refrigerant. The intake passage of the second cylinder 130 is connected to the exhaust passage of the first cylinder 120, and the second cylinder 130 can compress the refrigerant from the first cylinder 120 again.

[0044] Specifically, the first cylinder 120 may be provided with a first intake port 120A and a first exhaust port 120B, and the second cylinder 130 may be provided with a second intake port 130A and a second exhaust port 130B. The suction pipe 110B may be connected to the first cylinder 120 through the first suction port 120A, and the first exhaust port 120B is respectively connected to the second suction port 130A and the inner space of the housing 110 through the connecting pipe. The port 130B communicates with the internal space of the housing 110.

[0045] When the second cylinder 130 participates in the compression of the refrigerant, the low-pressure refrigerant first enters the first cylinder 120 from the first suction port 120A through the suction pipe 110B. The first cylinder 120 compresses the refrigerant, and the refrigerant is transformed from a low-pressure state into The intermediate pressure state, and then the intermediate pressure state refrigerant enters the second cylinder 130 through the first exhaust port 120B, the second cylinder 130 compresses the refrigerant again, the refrigerant is converted from the intermediate pressure state to the high pressure state, and finally the high pressure refrigerant passes through The second exhaust port 130B is discharged into the internal space of the housing 110. When the second cylinder 130 does not participate in the compression of the refrigerant, that is, only the first cylinder 120 participates in the compression of the refrigerant. The low-pressure refrigerant first enters the first cylinder 120 from the first suction port 120A through the suction pipe 110B. 120 compresses the refrigerant, the refrigerant is converted from low pressure to high pressure, and then the high pressure refrigerant is discharged into the internal space of the housing 110 through the first exhaust port 120B.

[0046] Such as Figure 1-Figure 4 As shown, the reversing assembly 20 may include a first valve port 210, a second valve port 220, a third valve port 230, and a fourth valve port 240. The first valve port 210 may be connected to the exhaust port, and the second valve port 220 It can be connected to the suction pipe 110B. The first end of the outdoor heat exchanger 40 is connected to the third valve port 230, the first end of the indoor heat exchanger 30 is connected to the fourth valve port 240, and the second end of the outdoor heat exchanger 40 is connected to the second end of the indoor heat exchanger 30. A throttling device is connected between the second ends.

[0047] Specifically, the reversing assembly 20 can switch the flow direction of the refrigerant in the refrigeration device 100, wherein an exhaust pipe 110A can be provided between the exhaust port and the first valve port 210. Such as image 3 As shown, when the refrigeration device 100 is performing cooling work, the first valve port 210 is connected to the third valve port 230, and the second valve port 220 is connected to the fourth valve port 240. The compressed refrigerant can pass through the reversing assembly 20. When flowing into the outdoor heat exchanger 40, the refrigerant first exchanges heat with outdoor air, and then the refrigerant flows into the throttling device. The throttling device throttles and reduces the pressure of the refrigerant, and the refrigerant changes from a gaseous state to a gas-liquid mixed state. After the refrigerant in the gas-liquid mixed state enters the indoor heat exchanger 30, the indoor heat exchanger 30 is an evaporator, and the liquid refrigerant evaporates and absorbs the heat of the indoor air, thereby reducing the indoor temperature. The refrigerant that has completed the indoor heat exchange flows back to the compressor 10 through the reversing assembly 20.

[0048] Such as Figure 4 As shown, when the refrigeration device 100 performs heating operation, the first valve port 210 and the fourth valve port 240 are conducted, and the second valve port 220 is conducted with the third valve port 230, and the high temperature and high pressure refrigerant can pass through the reversing assembly 20 flows into the indoor heat exchanger 30, and the high-temperature and high-pressure refrigerant can exchange heat with the indoor air, thereby achieving the purpose of raising the indoor temperature. After the heat exchange is completed, the refrigerant can flow into the throttling device to throttle and depressurize it, and then the refrigerant flows into the outdoor heat exchanger 40 to exchange heat with outdoor air, and finally returns to the compressor 10 through the reversing assembly 20 .

[0049] Such as Figure 1-Figure 2 As shown, the first end of the switching channel 50 is connected to the fourth valve port 240 or the first end of the switching channel 50 is connected between the indoor heat exchanger 30 and the throttling device, and the second end of the switching channel 50 is connected to The sliding vane cavity of the second cylinder 130 is connected, so that the working state of the second cylinder 130 can be switched. Specifically, the first end of the switching channel 50 can be connected to any position on the connecting pipeline between the fourth valve port 240 and the indoor heat exchanger 30, and the first end of the switching channel 50 can also be connected to the indoor heat exchanger. Heater 30 and throttling device (such as Figure 1-Figure 4 Any position on the connecting pipeline between the second throttling element 90) shown in the figure can be selected and set according to the actual installation space. The second cylinder 130 may also be provided with a pressure signal port 130C, and the pressure signal port 130C is connected to the second end of the switching flow passage 50.

[0050] When the refrigeration device 100 is performing refrigeration, the first end of the switching flow passage 50 is in a low-pressure state. Therefore, the pressure signal port 130C is also in a low-pressure state, and the sliding vane cavity is low-pressure. The second sliding vane in the second cylinder 130 Without contact with the second piston, the second cylinder 130 does not participate in the compression of the refrigerant, and the refrigerant compressed in the first cylinder 120 is directly discharged into the internal space of the housing 110. When the refrigeration device 100 performs heating operation, the first end of the switching channel 50 is in a high-pressure state. Therefore, the pressure signal port 130C is also in a high-pressure state, and the slide cavity is high-pressure, and the second slide in the second cylinder 130 The plate always abuts on the second piston under the action of high pressure, and the second cylinder 130 participates in the compression of the refrigerant. The refrigerant compressed in the first cylinder 120 enters the second cylinder 130 through the second intake port 130A, and the refrigerant is compressed in the second cylinder 130 before being discharged into the inner space of the housing 110.

[0051] Therefore, through the above design, the switching flow passage 50 can realize the switching of the working state of the second cylinder 130. When in a low temperature operating condition, switching the flow passage 50 can switch the second cylinder 130 to the working state, so that the refrigerant in the refrigeration device 100 can be compressed in two stages, which can increase the flow of the refrigerant and make the refrigeration device 100 work normally. Carry out low-temperature heating work. When the refrigeration device 100 is performing refrigeration work, one cylinder can meet the refrigeration demand. Switching the flow passage 50 can make the second cylinder 130 switch to a non-operating state. Only the first cylinder 120 participates in the compression of the refrigerant, thereby reducing refrigeration. Energy consumption of the device 100.

[0052] Such as Figure 1-Figure 6 As shown, the exhaust passage of the first cylinder 120 communicates with the intake end of the first one-way device 60, and the outlet end of the first one-way device 60 communicates with the space in the housing 110, so that one-way refrigerant can be realized. Circulation prevents the refrigerant in the housing 110 from flowing back into the second cylinder 130. Specifically, when the refrigeration device 100 performs heating operation, the second cylinder 130 can discharge the high-pressure refrigerant into the internal space of the housing 110, because the connecting pipe communicating with the first one-way device 60 is in the middle. In a compressed state, the first one-way device 60 can effectively prevent the refrigerant from flowing back into the second cylinder 130 from the housing 110, thereby ensuring the normal operation of the refrigeration device 100. It can be understood that the first one-way device 60 may be provided in the housing 110 or outside the housing 110. When the first one-way device 60 is arranged outside the housing 110, the outflow end of the refrigerant of the first one-way device 60 extends into the housing 110.

[0053] According to the refrigeration device 100 of the embodiment of the present invention, by setting the switching flow passage 50, when the refrigeration device 100 performs low-temperature cooling operation, the switching flow passage 50 can switch the refrigeration device 100 to a two-stage compression working state. During refrigeration, switching the flow channel 50 can switch the refrigeration device 100 to a single-stage compression working state, which can reduce the energy consumption of the refrigeration device 100 while meeting the actual use needs of users, thereby greatly improving the refrigeration device 100 Practical performance.

[0054] Such as Figure 1-Figure 6 As shown, in some embodiments of the present invention, the first one-way device 60 may be a one-way valve, which can be easily installed and operated. Specifically, the fluid in the check valve can only flow in one direction. As a result, the high-pressure refrigerant in the housing 110 can be effectively prevented from flowing back into the second cylinder 130 through the first one-way device 60 to ensure the normal operation of the compressor 10. Further, the one-way valve is a universal part, and the corresponding one-way valve can be selected according to the diameter of the connecting pipeline, which is convenient to obtain and easy to install.

[0055] Such as Figure 1-Figure 6 As shown, according to some embodiments of the present invention, the refrigeration device 100 further includes an air supplement device 70. The air supplement device 70 can be arranged between the indoor heat exchanger 30 and the outdoor heat exchanger 40, and the connecting pipeline is provided with a single unit. The air supplement device 70 may include an air supplement port 730. The air supplement port 730 can be connected to the suction channel of the second cylinder 130 through the air supplement channel 750. The air supplement channel 750 can be connected in series with a second one-way device 740, thus the working efficiency of the compressor 10 can be improved.

[0056] Specifically, the air supplement device 70 may include a first interface 710, a second interface 720 and an air supplement port 730. The throttling device may include a first throttling element 80 and a second throttling element 90. The first interface 710 is connected to the second end of the outdoor heat exchanger 40 through the first throttling element 80, and the second interface 720 passes through the second section. The flow element 90 is connected to the second end of the indoor heat exchanger 30, and the supplemental air port 730 may be connected to the suction channel of the second cylinder 130 through the supplemental air passage 750. The first throttle element 80 can be connected in series between the outdoor heat exchanger 40 and the air supplement device 70, and the second throttle element 90 can be connected in series between the indoor heat exchanger 30 and the air supplement device 70. The first throttle element 80 Both the second throttle element 90 and the second throttle element 90 can throttle and reduce the pressure of the refrigerant. One end of the air supplement channel 750 is connected to the air supplement 730, and the other end of the air supplement channel 750 is connected to the second air suction port 130A. The refrigerant inflow end of the second one-way device 740 is connected to the supplementary air port 730, and the refrigerant outflow end of the second one-way device 740 is connected to the second suction port 130A. Therefore, the refrigerant in the second cylinder 130 can be prevented from flowing back into the air supplement device 70, and the normal operation of the refrigeration device 100 can be ensured.

[0057] Such as Figure 1-Figure 4 As shown, in some embodiments of the present invention, the air supplement device 70 may be a gas-liquid separator, so that the working efficiency of the compressor 10 may be improved. Specifically, the gas-liquid separator can realize the separation of gaseous refrigerant and liquid refrigerant, and the separated gaseous refrigerant can enter the second cylinder 130 through the supplemental gas passage 750, so that the second cylinder 130 can be supplemented with air. Improve the working efficiency of the compressor 10.

[0058] Such as image 3 As shown, when the refrigeration device 100 performs cooling operation, the compressor 10 performs single-stage compression, the first cylinder 120 compresses the refrigerant to a high-pressure state and discharges it into the internal space of the housing 110, the supplemental air passage 750 and the second suction The end connected to the air port 130A is in a high pressure state, and the air supplement device 70 is in a medium pressure state. Therefore, the air supplement device 70 does not supplement the second cylinder 130. Such as Figure 4 As shown, when the refrigeration device 100 performs heating operation, the compressor 10 performs two-stage compression, the first cylinder 120 compresses the refrigerant to an intermediate pressure state and discharges it into the second cylinder 130, the supplemental air passage 750 and the second suction The end connected to the air port 130A is in a medium pressure state. Therefore, the gaseous refrigerant in the supplemental air device 70 can enter the second cylinder 130 through the supplemental air passage 750, thereby improving the working efficiency of the second cylinder 130 and thereby Low temperature heating capacity of the refrigeration device 100. It can be understood that when the refrigeration device 100 is performing cooling operation, the end of the air supplement channel 750 connected to the second suction port 130A is in a high pressure state, the end of the air supplement channel 750 connected to the air supplement port 730 is in a medium pressure state, and the second The one-way device 740 can prevent the high-pressure refrigerant discharged from the first cylinder 120 from flowing back into the air supplement device 70, thereby ensuring that the refrigerant flow rate of the compressor 10 remains constant. Optionally, the second one-way device 740 may be a one-way valve, which is convenient for installation and easy operation.

[0059] Such as Figure 5-Figure 6 As shown, according to some embodiments of the present invention, the air supplement device 70 may be a subcooling heat exchanger. The subcooling heat exchanger includes a first refrigerant pipeline 760 and a second refrigerant pipeline 770 that exchange heat with each other. The first end of the pipeline 760 is connected to the outdoor heat exchanger 40 through the first element, the second end of the first refrigerant pipeline 760 is connected to the supplemental air passage 750, and the first end of the second refrigerant pipeline 770 is connected to the outdoor The heat exchanger 40 is connected, and the second end of the second refrigerant pipe 770 is connected to the indoor heat exchanger 30 through the second throttling element 90, so that the utilization rate of the refrigerant temperature and the working efficiency of the refrigeration device 100 can be improved. Specifically, the first section element can throttle and reduce the pressure of the refrigerant entering the first refrigerant pipe 760, thereby reducing the temperature of the refrigerant in the first refrigerant pipe 760. Thus, the refrigerant in the first refrigerant pipe 760 can exchange heat with the refrigerant in the second refrigerant pipe 770. After the heat exchange is completed, the refrigerant in the first refrigerant pipeline 760 can enter the second cylinder 130 through the supplemental air passage 750, and the refrigerant in the second refrigerant pipeline 770 is throttled and depressurized again through the second throttle element 90 .

[0060] Such as Figure 5-Figure 6 As shown, in some embodiments of the present invention, the refrigeration device 100 may include a first one-way valve 70A, a second one-way valve 70B, a third one-way valve 70C, and a fourth one-way valve 70D. The inlet end of the first check valve 70A is connected to the outdoor heat exchanger 40, and the first end of the first refrigerant pipe 760 and the first end of the second refrigerant pipe 770 are both connected to the outlet end of the first check valve 70A Connected to the outlet end of the second one-way valve 70B, the inlet end of the second one-way valve 70B can be connected to the indoor heat exchanger 30, and the outlet end of the third one-way valve 70C is connected to the inlet end of the second one-way valve 70B , The inlet end of the third one-way valve 70C is respectively connected with the inlet end of the fourth one-way valve 70D and the second throttle element 90, and the outlet end of the fourth one-way valve 70D is connected with the inlet end of the first one-way valve 70A and The outdoor heat exchanger 40 is connected, thereby ensuring the normal circulation of the refrigerant in the subcooling heat exchanger.

[0061] Specifically, when the refrigeration device 100 performs a cooling operation, a high-temperature and high-pressure refrigerant exchanges heat with outdoor air in the outdoor heat exchanger 40, and the refrigerant is converted into a medium-temperature and high-pressure state. The refrigerant enters the first refrigerant pipeline 760 and the second refrigerant pipeline 770 through the first check valve 70A, and the first throttle element 80 throttles and reduces the pressure of the refrigerant in the first refrigerant pipeline 760, and the refrigerant transforms Into a low temperature and medium pressure state. The low-temperature and medium-pressure refrigerant in the first refrigerant pipe 760 exchanges heat with the medium-temperature and high-pressure refrigerant in the second refrigerant pipe 770. The refrigerant in the first refrigerant pipe 760 is heated and vaporized and enters through the supplemental air passage 750. Inside the second cylinder 130. After the heat exchange is completed, the refrigerant in the second refrigerant line 770 is transformed into a low-temperature and medium-pressure state. The second throttling element 90 throttles and reduces the pressure of the refrigerant in the second refrigerant line 770, and the second refrigerant line 770 The refrigerant in it is transformed into a low temperature and low pressure state. Since the outlet ends of the second one-way valve 70B and the fourth one-way valve 70D are both in a medium pressure state, the low-temperature and low-pressure refrigerant in the second refrigerant pipe 770 can flow into the indoor heat exchange through the third one-way valve 70C 器30中. As a result, the degree of subcooling of the refrigerant can be improved, and the cooling efficiency of the refrigeration device 100 can be improved.

[0062] When the refrigeration device 100 performs heating operation, the high-temperature and high-pressure refrigerant exchanges heat with indoor air in the indoor heat exchanger 30, and the refrigerant is converted into a medium-temperature and high-pressure state. The refrigerant enters the first refrigerant pipeline 760 and the second refrigerant pipeline 770 through the second one-way valve 70B. The first throttle element 80 throttles and reduces the pressure of the refrigerant in the first refrigerant pipeline 760, and the refrigerant transforms Into a low temperature and medium pressure state. The low-temperature and medium-pressure refrigerant in the first refrigerant pipe 760 exchanges heat with the medium-temperature and high-pressure refrigerant in the second refrigerant pipe 770. The refrigerant in the first refrigerant pipe 760 is heated and vaporized and enters through the supplemental air passage 750. Inside the second cylinder 130. After the heat exchange is completed, the refrigerant in the second refrigerant line 770 is transformed into a low-temperature and medium-pressure state. The second throttling element 90 throttles and reduces the pressure of the refrigerant in the second refrigerant line 770, and the second refrigerant line 770 The refrigerant in it is transformed into a low temperature and low pressure state. Since the outlet ends of the first one-way valve 70A and the third one-way valve 70C are both in a medium pressure state, the low-temperature and low-pressure refrigerant in the second refrigerant pipeline 770 can flow into the outdoor heat exchange through the fourth one-way valve 70D 器40中. As a result, the degree of subcooling of the refrigerant can be increased, so that the heat exchange efficiency of the outdoor heat exchanger 40 can be improved, and the heating performance of the refrigeration device 100 can be improved.

[0063] According to some embodiments of the present invention, the reversing assembly 20 can be a four-way valve, which can facilitate installation and actual operation. Specifically, a solenoid valve coil is provided in the four-way valve. When the refrigeration device 100 performs cooling operation, the four-way valve is de-energized, the first valve port 210 and the third valve port 230 are conducted, and the second valve port 220 and the fourth valve port 240 are conducted. When the refrigeration device 100 performs heating operation, the four-way valve is powered on, the piston in the four-way valve moves, the first valve port 210 and the fourth valve port 240 are conducted, and the second valve port 220 and the third valve port 230 are conducted. through.

[0064] Such as Figure 1-Figure 6 As shown, the compressor 10 according to the embodiment of the present invention includes: a housing 110, a first cylinder 120, a second cylinder 130, and a communication passage 150. The housing 110 may be provided with an exhaust port and a suction port. Specifically, the compressor 10 may further include an accumulator 140, and the suction port on the housing 110 is connected to the outlet port on the accumulator 140. The accumulator 140 can separate the gaseous refrigerant and the liquid refrigerant. The liquid refrigerant can be stored in the lower part of the accumulator 140 by the action of gravity, and the gaseous refrigerant can enter the compressor through the air outlet on the upper part of the accumulator 140 10 in. The compressor 10 can compress the refrigerant, and the compressed refrigerant can be discharged through the exhaust port.

[0065] Such as Figure 1-Figure 6 As shown, both the first cylinder 120 and the second cylinder 130 can be arranged in the housing 110, the suction port can communicate with the suction passage of the first cylinder 120, and the refrigerant sucked in through the suction passage can be in the first cylinder 120 Perform compression. The first sliding plate in the first cylinder 120 always abuts on the first piston. Therefore, when the refrigeration device 100 performs cooling and heating operations, the first cylinder 120 can both participate in the compression of the refrigerant. The intake passage of the second cylinder 130 is connected to the exhaust passage of the first cylinder 120, and the second cylinder 130 can compress the refrigerant from the first cylinder 120 again.

[0066] Specifically, the first cylinder 120 may be provided with a first intake port 120A and a first exhaust port 120B, and the second cylinder 130 may be provided with a second intake port 130A and a second exhaust port 130B. The suction pipe 110B is connected to the first cylinder 120 through the first suction port 120A, and the first exhaust port 120B is respectively communicated with the second suction port 130A and the internal space of the housing 110 through a connecting pipe. The second exhaust port 130B communicates with the internal space of the housing 110. When the second cylinder 130 participates in the compression of the refrigerant, the low-pressure refrigerant first enters the first cylinder 120 from the first suction port 120A through the suction pipe 110B. The first cylinder 120 compresses the refrigerant, and the refrigerant is transformed from a low-pressure state into The intermediate pressure state, and then the intermediate pressure state refrigerant enters the second cylinder 130 through the first exhaust port 120B, the second cylinder 130 compresses the refrigerant again, the refrigerant is converted from the intermediate pressure state to the high pressure state, and finally the high pressure refrigerant passes through The second exhaust port 130B is discharged into the internal space of the housing 110. When the second cylinder 130 does not participate in the compression of the refrigerant, that is, only the first cylinder 120 participates in the compression of the refrigerant. The low-pressure refrigerant first enters the first cylinder 120 from the first suction port 120A through the suction pipe 110B. 120 compresses the refrigerant, the refrigerant is converted from low pressure to high pressure, and then the high pressure refrigerant is discharged into the internal space of the housing 110 through the first exhaust port 120B.

[0067] Such as Figure 1-Figure 6 As shown, the exhaust passage of the second cylinder 130 is communicated with the inside of the housing 110, the back of the sliding plate of the second cylinder 130 is provided with a sliding plate cavity, and the sliding plate cavity of the second cylinder 130 is provided with a switching device (such as Figure 1-Figure 6 The reversing assembly shown in 20) is connected to the pressure signal port 130C. Specifically, a pressure pipeline (such as Figure 1-Figure 6 As shown in the switching flow passage 50), one end of the pressure pipeline is connected to the pressure signal port 130C, and the other end of the pressure pipeline is connected to the switching device. When the refrigeration device 100 is performing refrigeration, the end of the pressure pipe connected to the switching device is in a low pressure state. Therefore, the pressure signal port 130C is also in a low pressure state, and the slide cavity is low in pressure. The second slide in the second cylinder 130 The plate does not contact the second piston, and the second cylinder 130 does not participate in the compression of the refrigerant. The refrigerant compressed in the first cylinder 120 is directly discharged into the internal space of the housing 110. When the refrigeration device 100 is performing heating work, the end of the pressure pipe connected to the switching device is in a high pressure state. Therefore, the pressure signal port 130C is also in a high pressure state, and the sliding vane cavity is high pressure, and the second cylinder in the second cylinder 130 The sliding plate always abuts on the second piston under the action of high pressure, and the second cylinder 130 participates in the compression of the refrigerant. The refrigerant compressed in the first cylinder 120 enters the second cylinder 130 through the second intake port 130A, and the refrigerant is compressed in the second cylinder 130 before being discharged into the inner space of the housing 110.

[0068] Such as Figure 1-Figure 6 As shown, the communication passage 150 may include a main passage 150A, a first branch passage 150B, and a second branch passage 150C. The first end of the main passage 150A is connected to the exhaust passage of the first cylinder 120, and the second end of the main passage 150A is respectively It communicates with the first branch passage 150B and the second branch passage 150C, the first branch passage 150B is connected with the suction passage of the second cylinder 130, and the second branch passage 150C is communicated with the housing 110. Specifically, when the refrigeration device 100 adopts single-stage compression, the low-pressure refrigerant enters the first cylinder 120 through the suction pipe 110B, the first cylinder 120 compresses the refrigerant, and the refrigerant is converted into a high-temperature and high-pressure state and passes through the main passage 150A and the second branch channel 150C are discharged into the housing 110. When the refrigeration device 100 adopts two-stage compression, the low-pressure refrigerant enters the first cylinder 120 through the suction pipe 110B, the first cylinder 120 compresses the refrigerant, and the refrigerant is converted into a medium-pressure state. The medium-pressure refrigerant enters the second cylinder 130 through the main passage 150A and the first branch passage 150B. The second cylinder 130 compresses the refrigerant again, transforms the refrigerant into a high-temperature and high-pressure state and is discharged into the second exhaust port 130B. Inside the housing 110.

[0069] Such as Figure 1-Figure 6 As shown, the second branch passage 150C is connected in series with the first one-way device 60, and the air outlet of the first one-way device 60 is in communication with the space in the housing 110, so that the normal operation of the compressor 10 can be ensured. Specifically, when the refrigeration device 100 adopts single-stage compression, the high-pressure refrigerant enters the housing 110 through the second branch passage 150C, and the first one-way device 60 can realize the one-way circulation of the refrigerant and prevent the inside of the housing 110. The refrigerant flows back into the second cylinder 130. Optionally, the first one-way device 60 may be in the housing 110 (such as Figure 5 Shown), the first one-way device 60 can also be arranged outside the housing 110 (such as Image 6 (Shown), can be selected and set according to actual design requirements and installation space size, and the present invention does not specifically limit this.

[0070] According to the compressor 10 of the embodiment of the present invention, by setting the pressure signal port 130C, the compressor 10 can be switched between single-stage compression and two-stage compression, and the working mode of the compressor 10 can be selected under different working conditions. As a result, not only can the actual use requirements of users be met, but also the working efficiency of the compressor 10 can be improved and energy consumption can be reduced. Reference below Figure 3-Figure 4 The refrigeration device 100 according to a specific embodiment of the present invention is described in detail. The refrigeration device 100 can perform cooling and heating of indoor air.

[0071] Such as Figure 3-Figure 4 As shown, the refrigeration device 100 includes: a compressor 10, a reversing assembly 20, an indoor heat exchanger 30, an outdoor heat exchanger 40, a switching flow channel 50, a first one-way device 60, a second one-way device 740, and a first The throttle element 80, the second throttle element 90, the air supplement device 70 and the reservoir 140.

[0072] The compressor 10 includes a housing 110, a first cylinder 120, and a second cylinder 130. The housing 110 is provided with an exhaust pipe 110A and a suction pipe 110B. The first cylinder 120 and the second cylinder 130 are both arranged in the housing 110 , The first cylinder 120 is provided with a first intake port 120A and a first exhaust port 120B, and the second cylinder 130 is provided with a second intake port 130A, a second exhaust port 130B and a pressure signal port 130C. The suction pipe 110B is connected to the first cylinder 120 through the first suction port 120A, and the first exhaust port 120B is respectively communicated with the second suction port 130A and the internal space of the housing 110 through a connecting pipe. The second exhaust port 130B communicates with the internal space of the housing 110.

[0073] The reversing assembly 20 is a four-way valve. The reversing assembly 20 includes a first valve port 210, a second valve port 220, a third valve port 230, and a fourth valve port 240. The first valve port 210 is connected to the exhaust pipe 110A, The second valve port 220 is connected to the suction pipe 110B. The first end of the outdoor heat exchanger 40 is connected to the third valve port 230, and the first end of the indoor heat exchanger 30 is connected to the fourth valve port 240. The first end of the switching flow passage 50 is connected with the fourth valve port 240, and the second end of the switching flow passage 50 is connected with the sliding vane cavity of the second cylinder 130.

[0074] The air supplement device 70 is a gas-liquid separator. The air supplement device 70 includes a first interface 710, a second interface 720, and an air supplement port 730. The first interface 710 is connected to the second end of the outdoor heat exchanger 40 through the first throttle element 80 The second interface 720 is connected to the second end of the indoor heat exchanger 30 through the second throttling element 90. One end of the air supplement channel 750 is connected to the air supplement 730, and the other end of the air supplement channel 750 is connected to the second air suction port 130A. The exhaust passage of the first cylinder 120 communicates with the inlet end of the first one-way device 60, the outlet end of the first one-way device 60 communicates with the space in the housing 110, and the second one-way device 740 is connected in series with the supplemental air passage At 750, the refrigerant inflow end of the second one-way device 740 is connected to the supplementary air port 730, and the refrigerant outflow end of the second one-way device 740 is connected to the second air suction port 130A. The reservoir 140 is connected in series between the second valve port 220 and the first suction port 120A.

[0075] Specifically, such as image 3 As shown, when the refrigeration device 100 is performing cooling work, the first valve port 210 and the third valve port 230 of the reversing assembly 20 are conducted, and the second valve port 220 and the fourth valve port 240 are conducted, and the flow channel 50 is switched. The first end is in a low pressure state, the second sliding plate in the second cylinder 130 does not contact the second piston, and the second cylinder 130 does not participate in the compression of the refrigerant. The low-pressure refrigerant enters the first cylinder 120 from the first suction port 120A through the suction pipe 110B. The first cylinder 120 compresses the refrigerant to a high-pressure state and is discharged into the inner space of the housing 110 through the first one-way device 60 Inside. The high-pressure refrigerant enters the outdoor heat exchanger 40 through the exhaust pipe 110A and the reversing assembly 20. The refrigerant first exchanges heat with outdoor air, and then the first throttle element 80 and the second throttle element 90 sequentially throttle the refrigerant The refrigerant is transformed from a gaseous state into a gas-liquid mixed state and enters the indoor heat exchanger 30. The indoor heat exchanger 30 is an evaporator. The liquid refrigerant evaporates and absorbs the heat of the indoor air, thereby reducing the indoor temperature. purpose. The refrigerant, which has completed the indoor heat exchange, then flows back to the compressor 10 through the reversing assembly 20 and the accumulator 140, thereby completing a refrigeration cycle.

[0076] Such as Figure 4 As shown, when the refrigeration device 100 performs heating operation, the first valve port 210 and the fourth valve port 240 are connected, and the second valve port 220 is connected with the third valve port 230. The first end of the switching channel 50 is in a high-pressure state, the pressure signal port 130C is also in a high-pressure state, the sliding vane cavity is high-pressure, the second sliding vane in the second cylinder 130 always abuts on the second piston, the second cylinder 130 participates in the compression of refrigerant. The low-pressure refrigerant enters the first cylinder 120 from the first suction port 120A through the suction pipe 110B. The first cylinder 120 compresses the refrigerant to a medium pressure state, and the medium pressure refrigerant passes through the first exhaust port 120B. In the second cylinder 130, the second cylinder 130 compresses the refrigerant again, the refrigerant is converted from an intermediate pressure state to a high pressure state, and finally the high pressure refrigerant is discharged into the internal space of the housing 110 through the second exhaust port 130B. The high-pressure refrigerant enters the indoor heat exchanger 30 through the exhaust pipe 110A and the reversing assembly 20. The indoor heat exchanger 30 is a condenser. The high-temperature refrigerant can exchange heat with the indoor air, thereby increasing the indoor temperature. the goal of. After the heat exchange is completed, the refrigerant is throttled and reduced in pressure by the second throttle element 90 and then enters the air supplement device 70, and the air supplement device 70 separates the refrigerant. The gaseous refrigerant enters the second cylinder 130 through the supplemental air passage 750, and the liquid refrigerant enters the first throttle element 80 through the first port 710. The first throttle element 80 throttles and reduces the pressure of the refrigerant again, and then The refrigerant flows into the outdoor heat exchanger 40. The refrigerant exchanges heat with outdoor air in the outdoor heat exchanger 40, and the refrigerant after the heat exchange is sequentially returned to the compressor 10 through the reversing assembly 20 and the accumulator 140, thereby completing a heating cycle.

[0077] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", or "some examples" etc. means to incorporate the implementation The specific features, structures, materials or characteristics described by the examples or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

[0078] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and modifications can be made to these embodiments without departing from the principle and purpose of the present invention. The scope of the present invention is defined by the claims and their equivalents.