Compressor, thermal management system and vehicle

Abstract

The invention discloses a compressor, a heat management system and a vehicle, the compressor comprises a compression unit, the compression unit is provided with a compression cavity, the compressor further comprises a back pressure cavity, and a back pressure adjusting device is arranged between the back pressure cavity and the compression unit and used for adjusting the pressure of the back pressure cavity and oil return of the compression unit. According to the compressor provided by the embodiment of the invention, the backpressure adjusting device is arranged between the backpressure cavity and the compression unit, so that the backpressure adjusting device can adjust the pressure of the backpressure cavity and the return oil of the compression unit at the same time, the performance and reliability of the compressor can be improved, the manufacturing cost can be reduced, and the size of the compressor can be reduced; the light-weight design is improved, the number of moving parts is small, assembling is easy, vibration noise is low, the overall structure size is small, the energy conversion process is smooth, the using effect is better, and the application range is wider.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle manufacturing, and in particular to a compressor, a thermal management system and a vehicle. Background Art

[0002] Scroll compressors have become the preferred compressor type in passenger car air-conditioning systems due to their small size and high efficiency. With the vigorous promotion and development of new energy vehicles, new energy vehicle air-conditioning systems have also put forward higher requirements for scroll compressors. New energy vehicle air-conditioning systems need to ensure the comfort and safety of the passenger compartment under various high and low temperature environments, and ensure the safety of power batteries under the use requirements of fast charging, so the working conditions of scroll compressors are becoming more and more complex and changeable, requiring scroll compressors to maintain high performance and high reliability under various suction and exhaust pressures and various speeds.

[0003] When the scroll compressor is working, the movable scroll inside it will be subjected to axial gas force. The imbalance of axial gas pressure will cause serious leakage in the compression chamber of the scroll compressor, reduce the efficiency of the scroll compressor, and at the same time aggravate the wear of the movable scroll, bearings and other components, causing the scroll compressor to vibrate and make more noise, thereby reducing the performance and life of the scroll compressor. In order to reduce the vibration and noise caused by the imbalance of axial gas force in the scroll compressor, the related technology usually sets a back pressure chamber structure on the back of the movable scroll, and generates an axial thrust on the movable scroll through the pressure inside the back pressure chamber, so as to balance the axial gas force generated by the compression chamber. However, the back pressure chamber structure can only adjust the pressure inside the back pressure chamber, resulting in low compressor performance, and there is room for improvement. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art to at least a certain extent. To this end, one purpose of the present invention is to provide a compressor that can adjust the pressure of the back pressure chamber and the return oil of the compression unit at the same time, thereby improving the performance and reliability of the compressor, reducing the manufacturing cost, reducing the size of the compressor, and improving the lightweight design.

[0005] According to the compressor of an embodiment of the present invention, the compressor includes a compression unit, the compression unit has a compression chamber, the compressor also includes a back pressure chamber, and a back pressure regulating device is provided between the back pressure chamber and the compression unit for regulating the pressure of the back pressure chamber and the oil return of the compression unit.

[0006] According to the compressor of the embodiment of the present invention, a back-pressure regulating device is arranged between the back-pressure chamber and the compression unit, so that the back-pressure regulating device can regulate the pressure of the back-pressure chamber and the return oil of the compression unit at the same time, thereby improving the performance and reliability of the compressor, reducing the manufacturing cost, reducing the volume of the compressor, and improving the lightweight design. In addition, the compressor adopts a multi-tooth vortex structure, utilizing the characteristics of multiple teeth. Compared with traditional positive displacement compressors, the compressor has fewer moving parts, simpler assembly, less vibration and noise, smaller overall structural dimensions, smoother energy conversion process, better use effect, and wider range of application.

[0007] In the compressor according to some embodiments of the present invention, the opening pressure of the back pressure regulating device is adjustable.

[0008] In the compressor according to some embodiments of the present invention, the back pressure regulating device is configured to adjust the opening pressure according to the input current.

[0009] According to some embodiments of the compressor of the present invention, the back pressure regulating device includes a valve core, an elastic member and a driving member, the valve core can be opened to close the back pressure chamber, the elastic member is connected between the valve core and the driving member, the driving member is connected to the elastic member, and the driving force of the elastic member is adjustable.

[0010] In the compressor according to some embodiments of the present invention, the back-pressure regulating device closes the back-pressure chamber and opens the back-pressure chamber when an opening pressure is reached.

[0011] In the compressor according to some embodiments of the present invention, the back pressure regulating device is configured as a controllable switching valve.

[0012] According to some embodiments of the present invention, the compressor, the compression unit comprises a first scroll and a second scroll.

[0013] Wherein, the compression chamber is provided between the first scroll and the second scroll, and the back pressure regulating device is provided between the back pressure chamber and the compression chamber; or, the compression unit further includes an air suction chamber, and the back pressure regulating device is provided between the back pressure chamber and the air suction chamber.

[0014] In the compressor according to some embodiments of the present invention, the first scroll is configured as a movable scroll, and the second scroll is configured as a fixed scroll.

[0015] According to some embodiments of the present invention, the compressor further comprises an exhaust chamber, the compression chamber is connected to the exhaust chamber for exhausting gas, and the exhaust chamber and the back pressure chamber are connected for oil return.

[0016] According to some embodiments of the compressor of the present invention, the compressor further includes a first oil storage chamber, the first oil storage chamber is connected to the exhaust chamber and has an oil return port connected to the back pressure chamber, and the first oil storage chamber is provided with an oil-gas separation device.

[0017] According to some embodiments of the compressor of the present invention, the compressor also includes a top cover and a bracket, the top cover is provided with a first oil return channel connected to the oil return port, the bracket is provided with a second oil return channel connected to the back pressure chamber, the first oil return channel and the second oil return channel are connected, a first sealing gasket is provided at the connection between the outlet of the first oil return channel and the inlet of the second oil return channel, and the first sealing gasket has an opening for connecting the first oil return channel and the second oil return channel.

[0018] According to some embodiments of the present invention, the compressor further comprises a second oil storage chamber, wherein the second oil storage chamber is configured for oil return of the compression unit, and the back pressure regulating device is disposed between the back pressure chamber and the second oil storage chamber.

[0019] According to some embodiments of the compressor of the present invention, the compressor also includes a top cover and a bracket, the bracket is provided with a third oil return channel connected to the back pressure chamber, the top cover is provided with a fourth oil return channel connected to the second oil storage chamber, and the third oil return channel is connected to the fourth oil return channel.

[0020] According to the compressor of some embodiments of the present invention, the bracket is also provided with a back pressure regulating channel, the inlet of the back pressure regulating channel is connected to the third oil return channel, and the outlet is connected to the fourth oil return channel, and the back pressure regulating device is arranged in the back pressure regulating channel.

[0021] According to some embodiments of the compressor of the present invention, a second sealing gasket is provided at the connection between the outlet of the back pressure regulating channel and the inlet of the fourth oil return channel, and the second sealing gasket has a hole for connecting the back pressure regulating channel and the fourth oil return channel.

[0022] In the compressor according to some embodiments of the present invention, the radial dimension of the back pressure regulating channel is larger than that of the third oil return channel, and a step is formed between the circumferential surface of the back pressure regulating channel and the circumferential surface of the third oil return channel, and the back pressure regulating device elastically abuts against the step to openably close the outlet of the third oil return channel.

[0023] The invention also provides a thermal management system.

[0024] A thermal management system according to an embodiment of the present invention comprises any one of the compressors described above.

[0025] The present invention also provides a vehicle.

[0026] A vehicle according to an embodiment of the present invention includes any one of the above described compressors; or includes the above described thermal management system.

[0027] The vehicle, the thermal management system and the compressor described above have the same advantages as those of the prior art, which will not be described in detail herein.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of a compressor according to an embodiment of the present invention;

[0030] Figure 2 yes Figure 1 A magnified view of the Figure 1 ;

[0031] Figure 3 yes Figure 1 A magnified view of the Figure 2 ;

[0032] Figure 4 yes Figure 1 An enlarged schematic diagram of point B in FIG.

[0033] Figure 5 yes Figure 1 An enlarged schematic diagram of C in FIG.

[0034] Figure 6 yes Figure 1 An enlarged schematic diagram of D in FIG.

[0035] Figure 7 4 is a force analysis diagram of a valve core according to an embodiment of the present invention.

[0036] Reference numerals:

[0037] Compressor 100,

[0038] Housing 1, crankshaft 11, rotor 12, stator 13, first balancing block 14, second balancing block 15, first bearing 16, second bearing 17, third bearing 18,

[0039] Top cover 2, first oil return channel 21, fourth oil return channel 22, compression unit 3, first scroll 31, second scroll 32, fifth oil return channel 321, exhaust channel 322, bracket 4, second oil return channel 41, third oil return channel 42, back pressure regulating channel 43, step 44, first sealing gasket 5, second sealing gasket 6, sealing ring 7,

[0040] Back pressure regulating device 8, valve core 81, elastic member 82, driving member 83, mounting seat 84,

[0041] Oil return structure 9, back pressure chamber 91, exhaust chamber 92, first oil storage chamber 93, oil-gas separation device 931, oil return port 932, second oil storage chamber 94, compression chamber 95. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0043] Reference below Figure 1-Figure 7 The compressor 100 according to an embodiment of the present invention can adjust the pressure of the back pressure chamber 91 and the return oil of the compression unit 3, thereby improving the performance and reliability of the compressor 100, reducing the manufacturing cost, reducing the volume of the compressor 100, and improving the lightweight design.

[0044] like Figure 1-Figure 7 As shown, according to the compressor 100 of an embodiment of the present invention, the compressor 100 includes a compression unit 3, the compression unit 3 has a compression chamber 95, the compressor 100 also includes a back pressure chamber 91, and a back pressure regulating device 8 is provided between the back pressure chamber 91 and the compression unit 3 for regulating the pressure of the back pressure chamber 91 and the return oil of the compression unit 3.

[0045] The compressor 100 may be a scroll compressor 100, which is a volumetric compression compressor 100, wherein the compression component is composed of a movable scroll and a stationary scroll, and has a plurality of structural features for reducing oil entrained during gas flow through a gas channel provided in the housing 1 of the compressor 100. The scroll compressor 100 has the characteristics of simple structure, small size, high efficiency, high reliability, etc., and has a wider range of applications.

[0046] Specifically, the compressor 100 can pass gas and compress the passed gas. A compression unit 3 is provided in the compressor 100. The gas passed into the compressor 100 can flow into the compression unit 3. A compression chamber 95 is formed inside the compression unit 3. There can be multiple compression chambers 95, and the gas can enter the multiple compression chambers 95 respectively. When the compressor 100 is running, the compression unit 3 will translate and rotate, thereby changing the volume of the multiple compression chambers 95, so that the volume of the gas passed into the compression chamber 95 is compressed, thereby completing the compression of the gas, which can improve the volumetric efficiency, and the gas can be transported to the multiple compression chambers 95 separately to achieve smooth gas transmission, thereby reducing the pulsation loss and flow loss in the gas transmission process, ensuring the compression effect, and improving the performance of the compressor 100.

[0047] Furthermore, a back-pressure chamber 91 is formed inside the compressor 100. The back-pressure chamber 91 is located at the back end of the compression unit 3 and can be communicated with the compression chamber 95. Gas can also be introduced into the back-pressure chamber 91. When the compression unit 3 is in operation, the gas in its compression chamber 95 will generate a force on the compression unit 3, and the gas in the back-pressure chamber 91 can also generate a force on the compression unit 3. The force generated by the gas in the back-pressure chamber 91 can be balanced with the force generated by the gas in the compression chamber 95, thereby avoiding problems such as leakage of the compression chamber 95 due to unbalanced force of the compression unit 3 and reduced efficiency of the compressor 100. At the same time, it can avoid problems such as vibration and high noise caused by wear of internal parts of the compressor 100, thereby improving the performance of the compressor 100 and extending the service life of the compressor 100.

[0048] There is oil in the compression unit 3. When the compressor 100 is running, the compression unit 3 moves, and the oil can lubricate the compression unit 3, thereby ensuring the reliability of the movement of the compression unit 3 and reducing the noise and vibration generated when the compressor 100 is running. A back pressure regulating device 8 is provided between the back pressure chamber 91 and the compression unit 3. The back pressure regulating device 8 can adjust the pressure of the back pressure chamber 91, that is, the back pressure regulating device 8 can adjust the magnitude of the force generated by the gas in the back pressure chamber 91, so that under different working conditions of the compressor 100, the force generated by the gas in the back pressure chamber 91 can be balanced with the force generated by the gas in the compression chamber 95, thereby improving the performance and reliability of the compressor 100. The back pressure regulating device 8 can also adjust the return oil of the compression unit 3, thereby adjusting the lubrication effect of the oil on the compression unit 3, thereby ensuring the compression effect of the compression unit 3 on the gas. The back pressure regulating device 8 can simultaneously adjust the pressure of the back pressure chamber 91 and the return oil of the compression unit 3, thereby reducing the number of parts in the compressor 100, reducing the manufacturing cost, reducing the volume of the compressor 100, and improving the lightweight design.

[0049] According to the compressor 100 of the embodiment of the present invention, a back pressure regulating device 8 is arranged between the back pressure chamber 91 and the compression unit 3, so that the back pressure regulating device 8 can regulate the pressure of the back pressure chamber 91 and the return oil of the compression unit 3 at the same time, thereby improving the performance and reliability of the compressor 100, reducing the manufacturing cost, reducing the volume of the compressor 100, and improving the lightweight design. In addition, the compressor 100 adopts a multi-tooth vortex structure, utilizing the characteristics of multiple teeth. Compared with traditional positive displacement compressors, it has fewer moving parts, simpler assembly, less vibration and noise, smaller overall structural dimensions, smoother energy conversion process, better use effect, and wider range of applications.

[0050] In some embodiments, the opening pressure of the back pressure regulating device 8 is adjustable.

[0051] Specifically, the opening pressure of the back pressure regulating device 8 is set to be adjustable, and the pressure in the compression chamber 95 of the compression unit 3 varies according to different working conditions. The opening pressure of the back pressure regulating device 8 is set to be adjustable, so that the compressor 100 can be applied to different working conditions, thereby ensuring the performance of the compressor 100 and improving the application range of the compressor 100.

[0052] In some embodiments, the back pressure regulating device 8 is configured to adjust the cracking pressure according to the input current.

[0053] Specifically, the back pressure regulating device 8 can adjust the connection state between the back pressure chamber 91 and the compression unit 3. When the back pressure regulating device 8 reaches the opening pressure, the back pressure chamber 91 can be opened, thereby connecting the back pressure chamber 91 and the compression chamber 95, and the opening pressure of the back pressure regulating device 8 is adjustable, so that the compressor 100 can be applied to different working conditions. In this embodiment, the back pressure regulating device 8 is configured to control the opening pressure by the input current, that is, the magnitude of the current input to the back pressure regulating device 8 can be adjusted according to demand, and the pressure in the back pressure chamber 91 will have an effect on the back pressure regulating device 8. When force is applied, and when current is passed through the back-pressure regulating device 8, a force in the opposite direction to the force generated by the pressure in the back-pressure chamber 91 on the back-pressure regulating device 8 is also generated. The back-pressure regulating device 8 can control the open or closed state according to the size of the two forces, and the force generated by the back-pressure regulating device 8 itself can be changed according to the size of the current. As a result, when the pressure in the back-pressure chamber 91 changes the size of the force generated by the back-pressure regulating device 8, the back-pressure regulating device 8 can also adjust its own force accordingly to accurately open and close, thereby ensuring the operational reliability of the back-pressure regulating device 8.

[0054] In some embodiments, the back pressure regulating device 8 includes a valve core 81, an elastic member 82 and a driving member 83. The valve core 81 can open and close the back pressure chamber 91. The elastic member 82 is connected between the valve core 81 and the driving member 83. The driving member 83 is connected to the elastic member 82, and the driving force of the elastic member 82 is adjustable.

[0055] Specifically, Figure 2-Figure 3 As shown, the back pressure regulating device 8 is arranged between the back pressure chamber 91 and the compression unit 3, and the back pressure regulating device 8 is provided with a valve core 81, an elastic member 82 and a driving member 83. The valve core 81 can be set to a spherical shape or a wedge shape, etc., and the valve core 81 is arranged on the side of the back pressure regulating device 8 close to the back pressure chamber 91, which can be used to close or open the back pressure chamber 91, and the side of the valve core 81 away from the back pressure chamber 91 is connected with an elastic member 82, the elastic member 82 can be set to a spring, etc., the other end of the elastic member 82 is connected to the driving member 83, the driving member 83 can be set to an electromagnet, etc., the driving member 83 can apply a driving force to the elastic member 82, so that the elastic member 82 can drive the valve core 81 close to or away from the back pressure chamber 91, and can transmit current to the driving member 83, and the driving force applied by the driving member 83 to the elastic member 82 can be adjusted by changing the size of the transmitted current, so that the back pressure regulating device 8 can adapt to the pressure size of different back pressure chambers 91, thereby ensuring the reliability of the back pressure regulating device 8.

[0056] In some embodiments, the back pressure regulating device 8 closes the back pressure chamber 91 and opens the back pressure chamber 91 when the opening pressure is reached.

[0057] Specifically, the back pressure chamber 91 is located at the back end of the compression unit 3 and can be connected with the compression chamber 95, and a back pressure regulating device 8 is provided between the back pressure chamber 91 and the compression chamber 95. The back pressure regulating device 8 can adjust the pressure of the back pressure chamber 91, that is, the back pressure regulating device 8 can control the connection state between the back pressure chamber 91 and the compression unit 3, that is, the back pressure regulating device 8 can close the back pressure chamber 91, thereby cutting off the connection between the back pressure chamber 91 and the compression unit 3, and the back pressure regulating device 8 can also open the back pressure chamber 91, thereby connecting the back pressure chamber 91 and the compression unit 3.

[0058] Furthermore, the back pressure regulating device 8 can open or close the back pressure chamber 91 according to the pressure in the back pressure chamber 91. When the pressure in the back pressure chamber 91 reaches the opening pressure, the back pressure regulating device 8 can open the back pressure chamber 91, thereby connecting the back pressure chamber 91 and the compression unit 3, so that the force generated by the gas in the back pressure chamber 91 can be balanced with the force generated by the gas in the compression chamber 95, thereby improving the performance and reliability of the compressor 100.

[0059] In some embodiments, the back pressure regulating device 8 is configured as a controllable switch valve. The back pressure regulating device 8 is arranged between the back pressure chamber 91 and the compression unit 3, and can open or close the back pressure chamber 91. The back pressure regulating device 8 can open the back pressure chamber 91 when the opening pressure is reached, and the pressure of the gas in the compression chamber 95 of the compression unit 3 will change due to different working conditions of the compressor 100. The back pressure regulating device 8 is set as a controllable switch so that the opening pressure is adjustable, thereby allowing the compressor 100 to adapt to different working conditions, meet different usage requirements, and ensure the performance and reliability of the compressor 100.

[0060] In some embodiments, the compression unit 3 includes a first scroll 31 and a second scroll 32, wherein a compression chamber 95 is provided between the first scroll 31 and the second scroll 32, and a back pressure regulating device 8 is provided between the back pressure chamber 91 and the compression chamber 95; or, the compression unit 3 also includes an intake chamber, and the back pressure regulating device 8 is provided between the back pressure chamber 91 and the intake chamber.

[0061] Specifically, the compressor 100 is provided with a compression unit 3, and the gas introduced into the compressor 100 can flow into the compression unit 3, thereby compressing the gas. Figure 1 As shown, the compression unit 3 is provided with a first scroll 31 and a second scroll 32, and the first scroll 31 and the second scroll 32 are meshed with each other, and a plurality of compression chambers 95 are formed between the first scroll 31 and the second scroll 32, and the gas is compressed in the plurality of compression chambers 95, and the compression chamber 95 is formed on the side of the first scroll 31 away from the second scroll 32, the compression chamber 95 can be connected with the back pressure chamber 91, and the back pressure regulating device 8 is arranged between the compression chamber 95 and the back pressure chamber 91, so that the back pressure regulating device 8 can control the connection state of the compression chamber 95 and the back pressure chamber 91, thereby avoiding the problems of leakage of the compression chamber 95 and reduction of the efficiency of the compressor 100 due to unbalanced force of the compression unit 3, and avoiding the problems of vibration and high noise of the compressor 100 caused by wear of internal parts of the compressor 100, thereby improving the performance of the compressor 100 and extending the service life of the compressor 100.

[0062] The compression unit 3 may also be provided with structures such as an intake chamber, and the gas may flow into the intake chamber, so that the gas in the intake chamber can generate a force on the compression unit 3. The back pressure chamber 91 may be connected to the intake chamber, and a back pressure regulating device 8 may also be provided between the back pressure chamber 91 and the intake chamber to balance the force generated by the gas in the back pressure chamber 91 and the force generated by the gas in the intake chamber, so as to ensure the reliability of the operation of the compression unit 3 and thus ensure the reliability of the operation of the compressor 100. The intake chamber may also refer to the installation chamber of other components in the compressor 100, and the intake chamber may be provided with components such as the stator 13, the rotor 12, the first balancing block 14, the second balancing block 15, the first bearing 16 and the crankshaft 11, so that the oil can lubricate the internal parts of the compressor 100 and ensure the reliability of the operation of the compressor 100.

[0063] In some embodiments, the first scroll 31 is configured as a movable scroll, and the second scroll 32 is configured as a movable scroll.

[0064] Specifically, Figure 1 As shown, the compression unit 3 is provided with a first scroll 31 and a second scroll 32, the first scroll 31 is configured as a movable scroll, and the second scroll 32 is configured as a stationary scroll, and the movable scroll and the stationary scroll are meshed with each other, thereby forming a plurality of compression chambers 95 between the movable scroll and the stationary scroll. When the movable scroll moves relative to the stationary scroll, the volumes of the plurality of compression chambers 95 are changed, so that the volume of the gas entering the compression chamber 95 is compressed, thereby completing the compression of the gas, which can improve the volumetric efficiency, and conveying the gas to the plurality of compression chambers 95 separately can realize smooth gas transmission, thereby reducing the pulsation loss and flow loss in the gas transmission process, ensuring the compression effect, and improving the performance of the compressor 100.

[0065] In some embodiments, the compressor 100 further includes an exhaust chamber 92 , a compression chamber 95 is connected to the exhaust chamber 92 for exhaust, and the exhaust chamber 92 and the back pressure chamber 91 are connected for oil return.

[0066] Specifically, Figure 1 As shown, the compressor 100 is also provided with an exhaust chamber 92. After the gas enters the compression unit 3, it can be compressed in multiple compression chambers 95, and the compression chamber 95 is connected to the exhaust chamber 92. The compressed gas can flow into the exhaust chamber 92, and then can be discharged from the compressor 100 through the exhaust chamber 92 to complete the compression of the gas by the compressor 100, and oil is provided in the compressor 100. The oil can flow with the gas in the compression chamber 95, the back pressure chamber 91 and the exhaust chamber 92, so that the oil can be returned to lubricate the structure inside the compressor 100 to ensure the operating reliability of the compressor 100.

[0067] In some embodiments, the compressor 100 further includes a first oil storage chamber 93 , which is connected to the exhaust chamber 92 and has an oil return port 932 connected to the back pressure chamber 91 . The first oil storage chamber 93 is provided with an oil-gas separation device 931 .

[0068] Specifically, Figure 1 As shown, the compressor 100 is further provided with a first oil storage chamber 93, and the compressed gas and oil can be discharged into the first oil storage chamber 93 through the exhaust chamber 92, and the first oil storage chamber 93 can discharge the gas to the outside and store the oil in the first oil storage chamber 93, the first oil storage chamber 93 has an oil return port 932 connected to the back pressure chamber 91, and the oil stored in the first oil storage chamber 93 can flow into the back pressure chamber 91 through the oil return port 932, and an oil-gas separation device 931 can also be provided in the first oil storage chamber 93, and the first oil storage chamber 93 has an oil return port 932 connected to the back pressure chamber 91, and the oil stored in the first oil storage chamber 93 can flow into the back pressure chamber 91 through the oil return port 932, and the first oil storage chamber 93 can also be provided with an oil-gas separation device 931, and the first oil storage chamber 93 has an oil return port 932 connected to the back pressure chamber 91, and the oil and oil separation device 931 can be provided in the first oil storage chamber 93. One side of the first oil storage chamber 93 is connected to the outside, and the other side can store oil, and an oil-gas separation device 931 is provided between the first oil storage chamber 93 and the outside communication side, and the oil-gas mixture is discharged into the first oil storage chamber 93 through the exhaust chamber 92, and the oil-gas mixture entering the first oil storage chamber 93 can be separated by the oil-gas separation device 931, so that the compressed gas can be discharged to the outside of the compressor 100, but the oil can be retained in the first oil storage chamber 93 to continue to participate in the lubrication of the inside of the compressor 100, thereby ensuring the reliability of the compressor 100.

[0069] In some embodiments, the compressor 100 also includes a top cover 2 and a bracket 4, the top cover 2 is provided with a first oil return channel 21 connected to the oil return port 932, the bracket 4 is provided with a second oil return channel 41 connected to the back pressure chamber 91, the first oil return channel 21 and the second oil return channel 41 are connected, and a first sealing gasket 5 is provided at the connection between the outlet of the first oil return channel 21 and the inlet of the second oil return channel 41, and the first sealing gasket 5 has a hole for connecting the first oil return channel 21 and the second oil return channel 41.

[0070] Specifically, Figure 1As shown, the compressor 100 is provided with a shell 1, and the compression unit 3 and the like are all arranged in the shell 1, and the compressor 100 is also provided with a top cover 2 and a bracket 4. The shell 1 is set to be open at one end, and the top cover 2 is arranged at the open end of the shell 1, the top cover 2 and the shell 1 together form an installation cavity of the compressor 100, the bracket 4 is arranged in the installation cavity, and the compression unit 3 is arranged between the top cover 2 and the bracket 4, and at the same time, the back pressure cavity 91 is arranged on the bracket 4 and is jointly defined by the bracket 4 and the first scroll 31 of the compression unit 3, and the first oil storage cavity 93 is arranged on the top cover 2, the top cover 2 is located at the end of the compressor 100, and one side of the first oil storage cavity 93 is connected to the outside, and the oil-gas mixture flowing into the first oil storage cavity 93 is separated by the oil-gas separation device 931, and its compressed gas can be discharged to the outside, and the first oil storage cavity 93 is arranged on the top cover 2 to facilitate the discharge of compressed gas to the outside, thereby reducing the pulsation loss and flow loss in the compressed gas transportation process, ensuring the compression effect, and improving the performance of the compressor 100.

[0071] Furthermore, if Figure 1 As shown, the top cover 2 is also provided with a first oil return channel 21, and the bracket 4 is provided with a second oil return channel 41. One end of the first oil return channel 21 is connected to the first oil storage chamber 93 through the oil return port 932, and the other end is connected to the second oil return channel 41, and the end of the second oil return channel 41 away from the first oil return channel 21 is connected to the back pressure chamber 91, so that the oil separated by the oil separation device in the first oil storage chamber 93 can flow to the second oil return channel 41 through the first oil return channel 21, and then flow to the back pressure chamber 91 through the second oil return channel 41. When there is a pressure difference between the first oil storage chamber 93 and the back pressure chamber 91, the oil can circulate. The compressor 100 is provided with a crankshaft 11. The crankshaft 11 can extend into the bracket 4 and is connected to the first scroll 31. A second bearing 17 is provided at the connection between the crankshaft 11 and the bracket 4, and a third bearing 18 is provided between the crankshaft 11 and the first scroll 31. The second bearing 17 and the third bearing 18 are both located in the back pressure chamber 91. The oil circulated in the back pressure chamber 91 can lubricate the third bearing 18 and the second bearing 17, thereby ensuring the operating performance of the compressor 100.

[0072] The first oil return channel 21 and the second oil return channel 41 are connected, and the oil can flow through the first oil return channel 21 to the second oil return channel 41, and then flow through the second oil return channel 41 to the back pressure chamber 91 to participate in the lubrication of the parts, and as Figure 5As shown, a first sealing gasket 5 is provided at the connection point between the outlet of the first oil return channel 21 and the inlet of the second oil return channel 41. The first sealing gasket 5 can be set to an elastic material, etc., and the first sealing gasket 5 is set to an annular structure, so that the oil can flow into the second oil return channel 41 through the first sealing gasket 5 to ensure the circulation of the oil. When the top cover 2 is installed on the shell 1, a force will be applied to the first sealing gasket 5, so that the first sealing gasket 5 can be tightly fitted between the connection point between the outlet of the first oil return channel 21 and the inlet of the second oil return channel 41, thereby ensuring the sealing of the connection point between the outlet of the first oil return channel 21 and the inlet of the second oil return channel 41, thereby ensuring the performance of the compressor 100.

[0073] In some embodiments, the compressor 100 further includes a second oil storage chamber 94 , which is configured for oil return from the compression unit 3 , and the back pressure regulating device 8 is disposed between the back pressure chamber 91 and the second oil storage chamber 94 .

[0074] Specifically, the compressor 100 is also provided with a second oil storage chamber 94, one side of the second oil storage chamber 94 is connected to the compression chamber 95 and the other side is connected to the back pressure chamber 91, and a back pressure regulating device 8 is provided between the back pressure chamber 91 and the second oil storage chamber 94. The back pressure regulating device 8 can control the connection state between the back pressure chamber 91 and the second oil storage chamber 94, that is, the back pressure regulating device 8 can make the back pressure chamber 91 and the second oil storage chamber 94 connected, and can also cut off the connection between the back pressure chamber 91 and the second oil storage chamber 94. When the back pressure regulating device 8 opens the back pressure chamber 91, the gas and oil in the back pressure chamber 91 can flow into the second oil storage chamber 94, and there is a pressure difference between the second oil storage chamber 94 and the compression chamber 95. Under the action of the pressure difference, the oil flows into the compression chamber 95 and can form an oil-gas mixture with the gas in the compression chamber 95. The oil-gas mixture can lubricate the first scroll 31 and the second scroll 32 while participating in the compression process, thereby ensuring the operating reliability of the compression unit 3.

[0075] The exhaust chamber 92, the first oil storage chamber 93, the back pressure chamber 91, the second oil storage chamber 94 and the compression chamber 95 are connected to form an oil return structure 9. The first oil storage chamber 93 is connected to the exhaust chamber 92. The compressed gas and oil can be discharged into the first oil storage chamber 93 through the exhaust chamber 92. The first oil storage chamber 93 can discharge the gas to the outside and store the oil in the first oil storage chamber 93, so that the oil circulates in the oil return structure 9. The second oil storage chamber 94 is connected to the compression chamber 95. The oil in the second oil storage chamber 94 can flow into the compression chamber 95 and then form an oil-gas mixture with the gas in the compression chamber 95. The oil-gas mixture can lubricate the first scroll 31 and the second scroll 32 while participating in the compression process, thereby ensuring the operating reliability of the compression unit 3.

[0076] The force borne by the valve core 81 of the back pressure regulating device 8 between the back pressure chamber 91 and the second oil storage chamber 94 is as follows: Figure 7As shown, it includes the force Fp of the gas pressure in the back pressure chamber 91 on the valve core 81, the force Fa of the gas pressure in the second oil storage chamber 94 on the valve core 81, the elastic force Fk of the elastic member 82 on the valve core 81, and the driving force Fd of the driving member 83 on the valve core 81.

[0077] When the force Fp acting on the back pressure chamber 91 is smaller than the sum of the force Fa acting on the second oil storage chamber 94, the elastic force Fk and the driving force Fd, the back pressure regulating device 8 closes the back pressure chamber 91; when the force Fp acting on the back pressure chamber 91 is greater than the sum of the force Fa acting on the second oil storage chamber 94, the elastic force Fk and the driving force Fd, the back pressure regulating device 8 opens the back pressure chamber 91.

[0078] In some embodiments, the compressor 100 also includes a top cover 2 and a bracket 4, the bracket 4 is provided with a third oil return channel 42 connected to the back pressure chamber 91, the top cover 2 is provided with a fourth oil return channel 22 connected to the second oil storage chamber 94, and the third oil return channel 42 and the fourth oil return channel 22 are connected.

[0079] Specifically, Figure 1 As shown, the compressor 100 also includes a top cover 2 and a bracket 4. The top cover 2 is also provided with a fourth oil return channel 22, and the bracket 4 is provided with a third oil return channel 42. One end of the third oil return channel 42 is connected to the back pressure chamber 91, and one end of the fourth oil return channel 22 is connected to the second oil storage chamber 94, and the third oil return channel 42 and the fourth oil return channel 22 are connected, so that the oil in the back pressure chamber 91 can flow to the fourth oil return channel 22 through the third oil return channel 42, and then flow to the second oil storage chamber 94 through the fourth oil return channel 22, and the second oil storage chamber 94 is connected to the compression chamber 95. There is a pressure difference between the second oil storage chamber 94 and the compression chamber 95. Under the action of the pressure difference, the oil flows into the compression chamber 95 and can form an oil-gas mixture with the gas in the compression chamber 95. The oil-gas mixture can lubricate the first scroll 31 and the second scroll 32 while participating in the compression process, thereby ensuring the operating reliability of the compression unit 3.

[0080] In some embodiments, the bracket 4 is further provided with a back pressure regulating channel 43 , the inlet of the back pressure regulating channel 43 is connected to the third oil return channel 42 , and the outlet is connected to the fourth oil return channel 22 , and the back pressure regulating device 8 is provided in the back pressure regulating channel 43 .

[0081] Specifically, Figure 1As shown, the bracket 4 is also provided with a back pressure regulating channel 43, one end of the back pressure regulating channel 43 is connected to the third oil return channel 42, and the other end is connected to the fourth oil return channel 22. The oil in the back pressure chamber 91 can flow to the third oil return channel 42, and flow to the back pressure regulating channel 43 through the third oil return channel 42, and then flow to the fourth oil return channel 22 through the back pressure regulating channel 43, and then flow to the second oil storage chamber 94 through the fourth oil return channel 22, that is, the inlet of the back pressure regulating channel 43 is connected to the third oil return channel 42, and the outlet is connected to the fourth oil return channel 22, and the back pressure regulating device 8 is arranged in the back pressure regulating channel 43, so that the back pressure regulating device 8 can control the connection state between the third oil return channel 42 and the fourth oil return channel 22.

[0082] Furthermore, the second oil storage chamber 94 and the compression chamber 95 are connected via the fifth oil return channel 321, the third oil return channel 42 and the back pressure chamber 91 are connected, and the fourth oil return channel 22 and the second oil storage chamber 94 are connected. The back pressure regulating device 8 can control the connection state between the third oil return channel 42 and the fourth oil return channel 22, and further control the connection state between the back pressure chamber 91 and the compression chamber 95, so that the force generated by the gas in the back pressure chamber 91 can be balanced with the force generated by the gas in the compression chamber 95, thereby avoiding the problems of leakage of the compression chamber 95 and reduction of the efficiency of the compressor 100 due to unbalanced force of the compression unit 3, and at the same time avoiding the problems of vibration and high noise of the compressor 100 caused by wear of the internal parts of the compressor 100, thereby improving the performance of the compressor 100 and extending the service life of the compressor 100.

[0083] Among them, Figure 3 As shown, when the valve core 81 of the back pressure regulating device 8 is fitted with the third oil return channel 42, the back pressure regulating device 8 closes the back pressure chamber 91, the oil in the back pressure chamber 91 increases, and the pressure in the back pressure chamber 91 increases; Figure 2 As shown, when the valve core 81 of the back pressure regulating device 8 is disengaged from the third oil return channel 42, the back pressure regulating device 8 opens the back pressure chamber 91, the lubricating oil in the back pressure chamber 91 is reduced, and the pressure in the back pressure chamber 91 is reduced, and then the pressure in the back pressure chamber 91 can be controlled by controlling the opening and closing of the back pressure regulating device 8.

[0084] In some embodiments, a second sealing gasket 6 is provided at the connection point between the outlet of the back pressure regulating channel 43 and the inlet of the fourth oil return channel 22 , and a hole is opened in the second sealing gasket 6 for connecting the back pressure regulating channel 43 and the fourth oil return channel 22 .

[0085] Specifically, the back pressure regulating channel 43 is connected to the fourth oil return channel 22, and the oil can flow through the back pressure regulating channel 43 to the fourth oil return channel 22, and then flow through the fourth oil return channel 22 to the second oil storage chamber 94 to enter the compression chamber 95 for lubrication, and as Figure 5As shown, a second sealing gasket 6 is provided at the connection point between the outlet of the back-pressure regulating channel 43 and the inlet of the fourth oil return channel 22. The second sealing gasket 6 can be set to an elastic material, etc., and the second sealing gasket 6 is set to an annular structure, that is, the second sealing gasket 6 is provided with an opening, so that the oil in the back-pressure regulating channel 43 can flow to the fourth oil return channel 22 through the second sealing gasket 6 to ensure the circulation of the oil. When the top cover 2 is installed on the shell 1, a force will be applied to the second sealing gasket 6, so that the second sealing gasket 6 can be tightly fitted between the outlet of the back-pressure regulating channel 43 and the inlet of the fourth oil return channel 22. The connection point can ensure the sealing of the outlet of the back-pressure regulating channel 43 and the inlet of the fourth oil return channel 22, thereby ensuring the performance of the compressor 100.

[0086] In some embodiments, the radial dimension of the back pressure regulating channel 43 is larger than that of the third oil return channel 42, and a step 44 is formed between the circumferential surface of the back pressure regulating channel 43 and the circumferential surface of the third oil return channel 42, and the back pressure regulating device 8 elastically abuts against the step 44 to openably close the outlet of the third oil return channel 42.

[0087] Specifically, the inlet of the back pressure regulating channel 43 is connected to the third oil return channel 42, and the outlet is connected to the fourth oil return channel 22, and as shown in FIG. Figure 2-Figure 3 As shown, the radial dimension of the back pressure regulating channel 43 is set to be larger than the third oil return channel 42, so that a step 44 is formed between the circumferential surface of the back pressure regulating channel 43 and the circumferential surface of the third oil return channel 42, and the back pressure regulating device 8 is provided with a mounting seat 84, which can abut against the step 44, and the driving member 83 is arranged on the mounting seat 84, the driving member 83 is connected to one end of the elastic member 82, and the other end is connected to the valve core 81, so that the driving member 83 can drive the elastic member 82 to drive the valve body to move, so that the back pressure regulating device 8 can open or close the outlet of the third oil return channel 42, and the third oil return channel 42 is connected to the back pressure chamber 91, and so the pressure in the back pressure chamber 91 can be controlled by controlling the opening and closing of the back pressure regulating device 8, thereby ensuring the operating performance of the compressor 100.

[0088] Among them, Figure 4 As shown, a sealing ring 7 is provided at the connection between the second scroll 32 and the top cover 2, and the sealing ring 7 is located between the second oil storage chamber 94 and the exhaust chamber 92. The pressure of the exhaust chamber 92 is significantly different from that of the second oil storage chamber 94. The sealing ring 7 can ensure the sealing performance between the second oil storage chamber 94 and the exhaust chamber 92, thereby ensuring the operating reliability of the compressor 100.

[0089] The invention also provides a thermal management system.

[0090] A thermal management system according to an embodiment of the present invention includes any one of the above compressors 100 .

[0091] According to the thermal management system of the embodiment of the present invention, a compressor 100 is provided, and the compressor 100 sets a back pressure regulating device 8 between the back pressure chamber 91 and the compression unit 3, so that the back pressure regulating device 8 can regulate the pressure of the back pressure chamber 91 and the return oil of the compression unit 3 at the same time, thereby improving the performance and reliability of the compressor 100, reducing the manufacturing cost, and reducing the volume of the compressor 100. In addition, the compressor 100 adopts a multi-tooth vortex structure, and utilizes the characteristics of multiple teeth. Compared with traditional volumetric compressors, it has fewer moving parts, simple assembly, low vibration and noise, small overall structural size, smooth energy conversion process, improved lightweight design, better use effect, and a wider range of applications.

[0092] The present invention also provides a vehicle.

[0093] A vehicle according to an embodiment of the present invention includes any one of the above compressors 100; or includes the above thermal management system.

[0094] According to the vehicle of the embodiment of the present invention, the compressor 100 of the vehicle is provided with a back pressure regulating device 8 between the back pressure chamber 91 and the compression unit 3, so that the back pressure regulating device 8 can regulate the pressure of the back pressure chamber 91 and the return oil of the compression unit 3 at the same time, thereby improving the performance and reliability of the compressor 100, reducing the manufacturing cost, reducing the volume of the compressor 100, and improving the lightweight design. Moreover, the compressor 100 adopts a multi-tooth vortex structure, utilizing the characteristics of multiple teeth. Compared with the traditional volumetric compressor, it has fewer moving parts, simple assembly, low vibration and noise, small overall structural size, smooth energy conversion process, better use effect, and wider range of application.

[0095] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0096] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0097] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0098] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0099] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0100] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A compressor (100), comprising a compression unit (3), wherein the compression unit (3) has a compression chamber (95), characterized in that: The compressor (100) further comprises a back pressure chamber (91), and a back pressure regulating device (8) is provided between the back pressure chamber (91) and the compression unit (3) for regulating the pressure of the back pressure chamber (91) and the oil return of the compression unit (3).

2. The compressor (100) according to claim 1, characterized in that: The opening pressure of the back pressure regulating device (8) is adjustable.

3. The compressor (100) according to claim 2, characterized in that: The back pressure regulating device (8) is configured to adjust the opening pressure according to the input current.

4. The compressor (100) according to claim 2, characterized in that: The back pressure regulating device (8) comprises a valve core (81), an elastic member (82) and a driving member (83); the valve core (81) can be opened to close the back pressure chamber (91); the elastic member (82) is connected between the valve core (81) and the driving member (83); the driving member (83) is connected to the elastic member (82), and the driving force of the elastic member (82) is adjustable.

5. The compressor (100) according to claim 1, characterized in that The back pressure regulating device (8) closes the back pressure chamber (91) and opens the back pressure chamber (91) when the opening pressure is reached.

6. The compressor (100) according to claim 1, characterized in that The back pressure regulating device (8) is configured as a controllable on / off valve.

7. The compressor (100) according to any one of claims 1 to 6, characterized in that: The compression unit (3) comprises a first scroll (31) and a second scroll (32), Wherein, the compression chamber (95) is provided between the first scroll (31) and the second scroll (32), and the back pressure regulating device (8) is provided between the back pressure chamber (91) and the compression chamber (95); or, the compression unit (3) further includes an air suction chamber, and the back pressure regulating device (8) is provided between the back pressure chamber (91) and the air suction chamber.

8. The compressor (100) according to claim 7, characterized in that The first scroll (31) is configured as a movable scroll, and the second scroll (32) is configured as a stationary scroll.

9. The compressor (100) according to any one of claims 1 to 6, characterized in that: The compressor (100) further comprises an exhaust chamber (92), the compression chamber (95) is connected to the exhaust chamber (92) for exhausting gas, and the exhaust chamber (92) and the back pressure chamber (91) are connected for oil return.

10. The compressor (100) according to claim 9, characterized in that The compressor (100) further comprises a first oil storage chamber (93), the first oil storage chamber (93) being connected to the exhaust chamber (92) and having an oil return port (932) connected to the back pressure chamber (91), and the first oil storage chamber (93) being provided with an oil-gas separation device (931).

11. The compressor (100) according to claim 10, characterized in that The compressor (100) further comprises a top cover (2) and a bracket (4); the top cover (2) is provided with a first oil return channel (21) connected to the oil return port (932); the bracket (4) is provided with a second oil return channel (41) connected to the back pressure chamber (91); the first oil return channel (21) and the second oil return channel (41) are connected; a first sealing gasket (5) is provided at a point where the outlet of the first oil return channel (21) and the inlet of the second oil return channel (41) are connected; a hole is provided in the first sealing gasket (5) for connecting the first oil return channel (21) and the second oil return channel (41).

12. The compressor (100) according to any one of claims 1 to 6, characterized in that: The compressor (100) further comprises a second oil storage chamber (94), wherein the second oil storage chamber (94) is configured to be used for oil return of the compression unit (3), and the back pressure regulating device (8) is arranged between the back pressure chamber (91) and the second oil storage chamber (94).

13. The compressor (100) according to claim 12, characterized in that The compressor (100) further comprises a top cover (2) and a bracket (4); the bracket (4) is provided with a third oil return passage (42) connected to the back pressure chamber (91); the top cover (2) is provided with a fourth oil return passage (22) connected to the second oil storage chamber (94); the third oil return passage (42) and the fourth oil return passage (22) are connected.

14. The compressor (100) according to claim 13, characterized in that The bracket (4) is also provided with a back pressure regulating channel (43), the inlet of the back pressure regulating channel (43) is connected to the third oil return channel (42), and the outlet is connected to the fourth oil return channel (22), and the back pressure regulating device (8) is arranged in the back pressure regulating channel (43).

15. The compressor (100) according to claim 14, characterized in that The radial dimension of the back pressure regulating passage (43) is larger than that of the third oil return passage (42), and a step (44) is formed between the circumferential surface of the back pressure regulating passage (43) and the circumferential surface of the third oil return passage (42). The back pressure regulating device (8) elastically abuts against the step (44) to openably close the outlet of the third oil return passage (42).

16. The compressor (100) according to claim 14, characterized in that A second sealing gasket (6) is provided at the connection point between the outlet of the back pressure regulating channel (43) and the inlet of the fourth oil return channel (22); the second sealing gasket (6) has a hole for connecting the back pressure regulating channel (43) and the fourth oil return channel (22).

17. A thermal management system, characterized in that: Comprising a compressor (100) according to any one of claims 1-16.

18. A vehicle, characterized in that: A compressor (100) comprising any one of claims 1 to 16; or a thermal management system according to claim 17.

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