Compressor, control method, electronic device, thermal management system and vehicle

Abstract

The application discloses a compressor, a control method, an electronic device, a thermal management system and a vehicle, and the compressor comprises a shell and a plurality of compression units arranged in the shell. The compressor provided by the application has a plurality of compression units, can meet various working conditions, and increases the application range of the compressor.

Description

Technical Field

[0001] This application relates to the field of compressor technology, and in particular to a compressor, control method, electronic device, thermal management system, and vehicle. Background Technology

[0002] Scroll compressors are core components of electric vehicle thermal management systems. As people's living standards and the requirements for electric vehicle thermal management improve, higher demands are placed on the performance of compressors. Compressors in related technologies typically have only one compression unit, which is insufficient to meet the usage requirements. Summary of the Invention

[0003] One objective of this application is to provide a compressor.

[0004] Another objective of this application is to propose a control method.

[0005] Another objective of this application is to provide an electronic device.

[0006] Another objective of this application is to propose a thermal management system.

[0007] Another objective of this application is to propose a vehicle.

[0008] A compressor according to an embodiment of this application includes: a housing and a plurality of compression units disposed within the housing, the compressor being used to compress fluid.

[0009] The compressor according to the embodiments of this application has multiple compression units, which can meet various operating conditions and increase the applicability of the compressor.

[0010] In addition, the compressor according to the above embodiments of this application may also have the following additional technical features:

[0011] In some embodiments, the plurality of compression units includes a first compression unit and a second compression unit.

[0012] The first compression unit and the second compression unit are connected in parallel in a first state.

[0013] The first compression unit and the second compression unit also have a second state in which they are connected in series.

[0014] In some embodiments, the compressor further includes a first valve group for controlling the switching of the first compression unit and the second compression unit between the first state and the second state.

[0015] In some embodiments, the first valve assembly includes a first switching valve, which is closed in the first state and open in the second state to connect the first compression unit and the second compression unit.

[0016] In some embodiments, the first valve group further includes a first suction valve, and the suction port of the second compression unit is selectively connected to the suction port of the compressor through the first suction valve;

[0017] The first valve group further includes a first exhaust valve, through which the exhaust port of the first compression unit can be selectively connected to the exhaust port of the compressor.

[0018] In some embodiments, the first exhaust valve is configured as a one-way exhaust structure; or, the first intake valve is configured as a one-way intake structure.

[0019] In some embodiments, the compressor further includes a first suction chamber, which is connected to the suction port of the second compression unit and optionally connected to the suction port of the compressor.

[0020] The compressor further includes a first exhaust chamber, which is connected to the exhaust port of the first compression unit and optionally connected to the exhaust port of the compressor.

[0021] In some embodiments, the first compression unit and the second compression unit are distributed along the axial direction of the housing, and a first separator is provided between the first compression unit and the second compression unit, the first separator separating the first exhaust chamber and the first intake chamber along the axial direction of the housing.

[0022] In some embodiments, in the first state and the second state, the first compression unit and the second compression unit are drive-connected; and / or, the first compression unit and the second compression unit also have a third state in which the drive is disconnected.

[0023] In some embodiments, the plurality of compression units further includes a third compression unit.

[0024] The second compression unit and the third compression unit have a fourth state in which they are connected in parallel;

[0025] The second compression unit and the third compression unit also have a fifth state in which they are connected in series.

[0026] In some embodiments, the compressor further includes a second valve group for controlling the switching of the second compression unit and the third compression unit between the fourth state and the fifth state.

[0027] In some embodiments, the second valve assembly further includes a second switching valve, which is closed in the fourth state and open in the fifth state to connect the second compression unit and the third compression unit.

[0028] In some embodiments, the second valve group further includes a second suction valve, through which the suction port of the third compression unit can be selectively connected to the suction port of the compressor;

[0029] The second valve group also includes a second exhaust valve, through which the exhaust port of the second compression unit can be selectively connected to the exhaust port of the compressor.

[0030] In some embodiments, the second exhaust valve is configured as a one-way exhaust structure; or, the second intake valve is configured as a one-way intake structure.

[0031] In some embodiments, the compressor further includes a second suction chamber, which communicates with the suction port of the third compression unit and may optionally communicate with the suction port of the compressor.

[0032] The compressor further includes a second exhaust chamber, which is connected to the exhaust port of the second compression unit and optionally connected to the exhaust port of the compressor.

[0033] In some embodiments, the second compression unit and the third compression unit are distributed along the axial direction of the housing, and a second separator is provided between the second compression unit and the third compression unit, the second separator separating the second exhaust chamber and the second intake chamber along the axial direction of the housing.

[0034] In some embodiments, in the fourth state and the fifth state, the second compression unit and the third compression unit are drive-connected; and / or, the second compression unit and the third compression unit also have a sixth state in which the drive is disconnected.

[0035] In some embodiments, the plurality of compression units are distributed along an axial direction within the housing.

[0036] In some embodiments, a controllable coupling is connected between adjacent compression units; or, a clutch is connected between adjacent compression units; or, in the axial direction, the displacement of the compression unit at the next higher level is greater than the displacement of the compression unit at the next lower level.

[0037] In some embodiments, the peripheral wall of the housing is provided with an exhaust passage arranged along the axial direction of the housing, the exhaust passage being connected to the exhaust port of the compressor and optionally connected to the exhaust port of the compression unit; and / or, the peripheral wall of the housing is provided with an intake passage arranged along the axial direction of the housing, the intake passage being connected to the intake port of the compressor and optionally connected to the intake port of the compression unit.

[0038] In some embodiments, at least one of the plurality of compression units is configured as a multi-tooth scroll compression structure.

[0039] In some embodiments, the multi-tooth vortex compression structure includes a first vortex disk and a second vortex disk. The first vortex disk includes a first base plate and a plurality of first vortex teeth disposed on the first base plate. The second vortex disk includes a second base plate and a plurality of second vortex teeth disposed on the second base plate. The plurality of first vortex teeth form a plurality of compression channels. The first base plate or the second base plate is provided with a plurality of exhaust holes that respectively communicate with the plurality of compression channels. The plurality of second vortex teeth are respectively disposed in the plurality of compression channels and respectively mesh with the plurality of first vortex teeth for driving fluid along the compression channels to the corresponding exhaust holes. In this embodiment, one of the first vortex disk and the second vortex disk is a moving vortex disk and the other is a stationary vortex disk.

[0040] In some embodiments, the stationary scroll has a first central through hole, the plurality of exhaust holes are disposed on the stationary scroll and distributed around the first central through hole, the moving scroll has a second central through hole, and the compressor further includes a crankshaft, the crankshaft includes a main journal and a connecting rod journal, the main journal passes through the first central through hole, and the connecting rod journal passes through the second central through hole.

[0041] In some embodiments, at least one of the plurality of compression units is configured as a single-tooth scroll compression structure.

[0042] In some embodiments, the single-tooth scroll compression structure includes a third scroll disk and a fourth scroll disk. The third scroll disk includes a third base plate and a third scroll tooth disposed on the third base plate. The fourth scroll disk includes a fourth base plate and a fourth scroll tooth disposed on the fourth base plate. The fourth scroll tooth meshes with the third scroll tooth. In this embodiment, one of the third scroll disk and the fourth scroll disk is a moving scroll disk and the other is a stationary scroll disk.

[0043] In some embodiments, the compression unit further includes a crankshaft, the compression units are distributed along the crankshaft and are drive-connected to the crankshaft, the crankshaft has a drive end and a free end, the drive end is used to connect a drive element, the compression units connected to the free end are configured as single-tooth scroll compression structures, and the other compression units are configured as multi-tooth scroll compression structures.

[0044] In some embodiments, the plurality of compression units are driven by the same crankshaft; and / or, at least two of the compression units have a phase difference.

[0045] In some embodiments, the compression unit includes a stationary volute, a moving volute, and an anti-rotation structure. The anti-rotation structure is stationary relative to the stationary volute. One of the moving volute and the anti-rotation structure is provided with at least one anti-rotation ring, and the other is provided with a positioning part. The positioning part is movably positioned around the anti-rotation ring around a fixed radius.

[0046] According to the control method of the present application embodiment, a compressor is used to control the aforementioned compressor. The plurality of compression units include a first compression unit and a second compression unit. The first compression unit and the second compression unit have a first state in which they are connected in parallel. The first compression unit and the second compression unit also have a second state in which they are connected in series. The compressor further includes a first valve group. The control method includes controlling the first valve group to switch the first compression unit and the second compression unit between the first state and the second state.

[0047] An electronic device according to an embodiment of this application includes a processor connected to a memory, the processor calling a computer program stored in the memory to implement the aforementioned control method.

[0048] The thermal management system according to an embodiment of this application is characterized in that it includes the aforementioned compressor.

[0049] The vehicle according to the embodiments of this application includes the aforementioned compressor; or includes the aforementioned thermal management system; or the aforementioned electronic device. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of a compressor according to an embodiment of this application, wherein the dashed arrows indicate the fluid flow direction when the first compression unit and the second compression unit are connected in parallel.

[0051] Figure 2 This is a schematic diagram of a compressor according to an embodiment of this application, wherein the dashed arrows indicate the fluid flow direction when the first compression unit and the second compression unit are connected in series.

[0052] Figure 3 This is a schematic diagram of a compressor according to another embodiment of this application, wherein the dashed arrows indicate the fluid flow direction when the first compression unit, the second compression unit, and the third compression unit are connected in parallel.

[0053] Figure 4 This is a schematic diagram of a compressor according to another embodiment of this application, wherein the dashed arrows indicate the fluid flow direction when the first compression unit, the second compression unit, and the third compression unit are connected in series.

[0054] Figure 5 This is a schematic diagram of the stationary scroll plate of the compression unit of a compressor according to an embodiment of this application.

[0055] Figure 6 This is a cross-sectional view of the stationary scroll plate of the compression unit of a compressor according to an embodiment of this application.

[0056] Figure 7 This is a schematic diagram of the moving scroll of the compression unit of a compressor according to an embodiment of this application.

[0057] Figure 8 This is a schematic diagram of a compression unit according to an embodiment of this application.

[0058] Figure 9 This is a side view of a compression unit according to an embodiment of this application.

[0059] Figure 10 yes Figure 9 Sectional view of mid-section BB.

[0060] Figure 11 This is a schematic diagram of the first scroll disk of a multi-tooth scroll compression structure according to an embodiment of this application.

[0061] Figure 12 This is a schematic diagram of the second scroll disk of a multi-tooth scroll compression structure according to an embodiment of this application.

[0062] Figure 13 This is a schematic diagram of the first scroll disk of a multi-tooth scroll compression structure according to another embodiment of this application.

[0063] Figure 14 This is a schematic diagram of the second scroll disk of a multi-tooth scroll compression structure according to another embodiment of this application.

[0064] Figures 15 to 18 This is a schematic diagram of the meshing of the first and second scroll disks of a multi-tooth scroll compression structure according to an embodiment of this application, wherein... Figures 15 to 18 This refers to the dynamic meshing process in chronological order.

[0065] Figure 19 This is a schematic diagram of the first scroll disk of a multi-tooth scroll compression structure according to another embodiment of this application.

[0066] Figure 20 This is a schematic diagram of the second scroll disk of a multi-tooth scroll compression structure according to another embodiment of this application.

[0067] Figure 21 This is a rotation angle-torque comparison diagram of a multi-tooth vortex compression structure and a single-tooth vortex structure according to an embodiment of this application.

[0068] Figure 22 This is a comparison diagram of the rotation angle and exhaust mass flow rate of a multi-tooth vortex compression structure and a single-tooth vortex structure according to an embodiment of this application.

[0069] Figure 23 This is a schematic diagram of the stationary vortex disk of a single-tooth vortex compression structure of a compression unit according to an embodiment of this application.

[0070] Figure 24 This is a schematic diagram of the moving scroll of a single-tooth scroll compression structure of a compression unit according to an embodiment of this application.

[0071] Reference numerals: Compressor 100, Housing 20, First partition 21, Second partition 22, Outlet 2003, Intake passage 2004, Exhaust passage 2005, First exhaust chamber 2011, First intake chamber 2012, First intake valve 212, First exhaust valve 211, First switching valve 213, Second exhaust chamber 2021, Second intake chamber 2022, Third exhaust chamber 2030, Second intake valve 222, Second exhaust valve 221, Second switching valve 223, Compression unit 10, First compression unit 10a, Second compression unit 10a, etc. Compression unit 10b, third compression unit 10c, first scroll plate 11, first base plate 111, first scroll tooth 112, second scroll plate 12, second base plate 121, second scroll tooth 122, third scroll plate 13, third base plate 131, third scroll tooth 132, fourth scroll plate 14, fourth base plate 141, fourth scroll tooth 142, compression channel 1001, exhaust port 1002, protrusion 1003, first central through hole 1004, second central through hole 1005, crankshaft 30, first coupling 41, second coupling 42. Detailed Implementation

[0072] Scroll compressors are core components of electric vehicle thermal management systems, and their structure and performance affect the vehicle's energy consumption, noise, and vibration levels. As people's living standards and the requirements for electric vehicle thermal management increase, higher demands are being placed on compressor performance, noise levels, and vibration. Variable speed is one way to improve the compressor's performance under varying operating conditions. Achieving variable capacity (variable displacement) adjustment based on variable speed will further improve the compressor's performance under varying operating conditions and expand its application range.

[0073] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0074] like Figures 1 to 4The compressor 100 according to an embodiment of this application includes: a housing 20 and a plurality of compression units disposed within the housing 20. The compressor is used to compress fluid. The compressor 100 according to an embodiment of this application has multiple compression units, which can meet various operating conditions and increase the applicability of the compressor 100.

[0075] The multiple compression units in this application can be configured in parallel, series, or mixed configurations, or some of the compression units can be powered while the others are not powered (not operating). These configurations allow for adjustment of the compressor 100's displacement, pressure ratio, etc. To achieve this adjustment, the multiple compression units in this application can be implemented in ways including, but not limited to, the following.

[0076] Implementation method one, such as Figure 1 and Figure 2 The multiple compression units include a first compression unit 10a and a second compression unit 10b, and the first compression unit 10a and the second compression unit 10b have a first state and a second state.

[0077] like Figure 1 In the first state, the first compression unit 10a and the second compression unit 10b are connected in parallel. Fluid can enter the compressor 100 from the compressor's suction port, and enter the first compression unit 10a through the suction port of the first compression unit 10a, and enter the second compression unit 10b through the suction port of the second compression unit 10b. After being driven and compressed by the first compression unit 10a and the second compression unit 10b, it is sent to the compressor's discharge port through the discharge ports of the first compression unit 10a and the second compression unit 10b. Through the parallel connection of the first compression unit 10a and the second compression unit 10b, the displacement of the compressor 100 can be the sum of the displacement of the first compression unit 10a and the displacement of the second compression unit 10b, and the compressor 100 can have a large displacement.

[0078] like Figure 2 In the second state, the first compression unit 10a and the second compression unit 10b are connected in series. Fluid can enter the compressor 100 from the compressor's suction port, and then enter the first compression unit 10a through its suction port. After being driven and compressed by the first compression unit 10a, it is discharged through its exhaust port. Subsequently, it enters the second compression unit 10b through its suction port, and after being driven and compressed by the second compression unit 10b, it is discharged to the compressor's exhaust port through its exhaust port. With the first compression unit 10a and the second compression unit 10b connected in series, the volume ratio of the compressor 100 is the product of the volume ratios of the first compression unit 10a and the second compression unit 10b, thereby achieving a high pressure ratio.

[0079] The compressor 100 further includes a first valve group configured to control the switching between the first compression unit 10a and the second compression unit 10b in the first state and the second state.

[0080] Optionally, in the first state, the first valve group controls the exhaust port of the first compression unit 10a to connect to the exhaust port of the compressor, and the intake port of the second compression unit 10b to connect to the intake port of the compressor, with the first compression unit 10a and the second compression unit 10b connected in parallel; in the second state, the first valve group is configured to control the exhaust port of the first compression unit 10a to connect to the intake port of the second compression unit 10b, with the first compression unit 10a and the second compression unit 10b connected in series.

[0081] The first valve group includes a first switching valve 213, which controls the connection between the exhaust port of the first compression unit 10a and the intake port of the second compression unit 10b. In a first state, the first switching valve 213 is closed; in a second state, the first switching valve 213 is open to connect the first compression unit and the second compression unit.

[0082] The first valve assembly also includes a first suction valve 212, through which the suction port of the second compression unit can be selectively connected to the suction port of the compressor. In some examples, the first suction valve 212 is configured as a one-way suction structure. That is, the first suction valve 212 is configured to allow airflow to flow unidirectionally from the suction port of the compressor to the suction port of the second compression unit 10b, while the fluid flowing from the suction port of the second compression unit 10b toward the suction port of the compressor will be blocked by the first suction valve 212, wherein the first suction valve 212 has a certain opening pressure.

[0083] The first valve group also includes a first exhaust valve 211, through which the exhaust port of the first compression unit can be selectively connected to the exhaust port of the compressor. In some examples, the first exhaust valve 211 is configured as a one-way exhaust structure, that is, the first exhaust valve 211 is configured to allow airflow to flow unidirectionally from the exhaust port of the first compression unit 10a to the exhaust port of the compressor, while the fluid flowing from the exhaust port of the compressor toward the exhaust port of the first compression unit 10a will be blocked by the first exhaust valve 211. The first exhaust valve 211 has a certain opening pressure.

[0084] The compressor 100 may further include a first exhaust chamber 2011, which is connected to the exhaust port of the first compression unit and optionally connected to the exhaust port of the compressor. The first exhaust chamber 2011 is connected to the exhaust port of the first compression unit 10a. After being compressed by the first compression unit 10a, the fluid will flow to the first exhaust chamber 2011. In a first state, the first exhaust chamber 2011 is connected to the exhaust port of the compressor, and when the fluid pressure in the first exhaust chamber 2011 reaches a predetermined value, it will flow to the exhaust port of the compressor. In a second state, the first exhaust chamber 2011 is connected to the first suction chamber 2012.

[0085] The compressor 100 may further include a first suction chamber 2012, which is connected to the suction port of the second compression unit and optionally connected to the suction port of the compressor. The first suction chamber 2012 may be configured to connect to the suction port of the second compression unit 10b, and fluid in the first suction chamber 2012 can enter the second compression unit 10b. In a first state, the first suction chamber 2012 is connected to the suction port of the compressor, and when the fluid pressure in the first suction chamber 2012 is lower than a predetermined value, fluid will flow from the suction port of the compressor into the first suction chamber 2012; in a second state, the first suction chamber 2012 is connected to the first discharge chamber 2011.

[0086] The first exhaust chamber 2011 and the first intake chamber 2012 can be disposed between the first compression unit 10a and the second compression unit 10b. Further, the first compression unit 10a and the second compression unit 10b are distributed along the axial direction of the housing 20, and a first separator 21 is provided between the first compression unit 10a and the second compression unit 10b, separating the first exhaust chamber 2011 and the first intake chamber 2012 along the axial direction of the housing 20. Through the first separator 21, the first exhaust chamber 2011 can be constructed in the space between the first separator 21 and the first compression unit 10a, and the first intake chamber 2012 can also be constructed between the first separator 21 and the second compression unit 10b, simplifying the structure of the compressor 100.

[0087] Furthermore, in the first and second states, the first compression unit 10a and the second compression unit 10b are connected by transmission. Additionally, the first compression unit 10a and the second compression unit 10b also have a third state in which the transmission between the first compression unit 10a and the second compression unit 10b is disconnected.

[0088] In conjunction with the foregoing, the compressor 100 may have operating modes including but not limited to the following.

[0089] Maximum displacement mode: such as Figure 1The first compression unit 10a and the second compression unit 10b are connected by a drive mechanism, which can control the first switching valve 213 (e.g., a large displacement valve) to close. At this time, the first compression unit 10a and the second compression unit 10b operate in parallel, and the system's displacement is the sum of the displacements of the first compression unit 10a and the second compression unit 10b. For example... Figure 1 A portion of the refrigerant enters the first compression unit from side A, is compressed by the first compression unit 10a, and is directly discharged to the first exhaust chamber 2011. It then passes through the first exhaust valve 211 to the exhaust passage 2005, and is discharged from the exhaust port 2002 of the exhaust passage 2005, finally exiting from the compressor's exhaust port. The other portion of the refrigerant enters the intake passage 2004 from the intake port 2001, passes through the first intake valve 212 to the first intake chamber 2012, is compressed by the second compression unit 10b, and is discharged to the third exhaust chamber 2030 on the outlet side of the second compression unit 10b. It then passes through the exhaust passage 2005, exits from the exhaust port 2002 of the exhaust passage 2005, and finally exits from the compressor's exhaust port. Side A of the first compression unit and the intake port 2001 of the intake passage 2004 are both connected to the compressor's intake port, and the exhaust port 2002 of the exhaust passage 2005 is connected to the compressor's exhaust port.

[0090] Maximum pressure ratio mode: such as Figure 2 The first compression unit 10a and the second compression unit 10b are connected by a drive mechanism, which can control the opening of the first switching valve 213 (e.g., a large displacement valve). At this time, the first compression unit 10a and the second compression unit 10b work in series, and the internal volume ratio of the system is the product of the internal volume ratios of the two compression units. Figure 2 The refrigerant enters the first compression unit from side A. After being compressed by the first compression unit 10a, it is discharged into the first exhaust chamber 2011. It then passes through the first switching valve 213 into the first intake chamber 2012, and is further compressed by the second compression unit 10b. Finally, it is discharged into the third exhaust chamber 2030 on the outlet side of the second compression unit 10b, and then through a one-way exhaust structure into the exhaust passage 2005. The refrigerant is then discharged from the exhaust port 2002 of the exhaust passage 2005, and finally from the compressor's exhaust port. Side A of the first compression unit is connected to the compressor's intake port, and the exhaust port 2002 of the exhaust passage 2005 is connected to the compressor's exhaust port. During operation, if the refrigerant pressure in the first exhaust chamber 2011 is high, the excess refrigerant will be discharged into the exhaust channel 2005 through the first exhaust valve 211; if the refrigerant pressure in the first intake chamber 2012 is low, the refrigerant in the intake channel 2004 can enter the first intake chamber 2012 through the first intake valve 212 to replenish the gas.

[0091] Small displacement mode: The first compression unit 10a and the second compression unit 10b are disconnected. The first compression unit 10a can be connected to the power source, while the second compression unit 10b is disconnected from the power source. The first switching valve 213 (e.g., a large displacement valve) can be set to the closed state (or the open state, but since the second compression unit 10b is not running, it will affect fluid flow). In this mode, the first compression unit 10a operates alone, and the system displacement is the displacement of the first compression unit 10a, and the compression ratio is the compression ratio of the first compression unit 10a. (Reference) Figure 1 The refrigerant enters the first compression unit from side A, is compressed by the first compression unit 10a, and is then directly discharged into the first exhaust chamber 2011. It then passes through the first exhaust valve 211 to the exhaust passage 2005, and is discharged from the exhaust port 2002 of the exhaust passage 2005, finally exiting from the compressor's exhaust port. Side A of the first compression unit is connected to the compressor's intake port, and the exhaust port 2002 of the exhaust passage 2005 is connected to the compressor's exhaust port.

[0092] Implementation method two, such as Figure 3 and Figure 4 The compressor 100 comprises multiple compression units, including a first compression unit 10a, a second compression unit 10b, and a third compression unit 10c. This allows for further expansion of the compressor 100's operating modes, thereby increasing the range of its operating conditions.

[0093] The first compression unit 10a and the second compression unit 10b have a first state and a second state. The first state and the second state can be implemented with reference to Embodiment 1, and can be implemented using the scheme of Embodiment 1.

[0094] The second compression unit 10b and the third compression unit 10c have a fourth state and a fifth state.

[0095] like Figure 3 In the fourth state, the second compression unit 10b and the third compression unit 10c are connected in parallel. Fluid can enter the compressor 100 from the compressor's suction port, and enter the second compression unit 10b through the suction port of the second compression unit 10b, and enter the third compression unit 10c through the suction port of the third compression unit 10c. After being driven and compressed by the second compression unit 10b and the third compression unit 10c, it is sent to the compressor's discharge port through the discharge ports of the second compression unit 10b and the third compression unit 10c. Through the parallel connection of the second compression unit 10b and the third compression unit 10c, the displacement of the compressor 100 can be no less than the sum of the displacements of the second compression unit 10b and the third compression unit 10c, and the compressor 100 can have a large displacement.

[0096] like Figure 4In the fifth state, the second compression unit 10b and the third compression unit 10c are connected in series. Fluid can enter the compressor 100 from the compressor's suction port, and then enter the second compression unit 10b through its suction port. After being driven and compressed by the second compression unit 10b, it is discharged through its exhaust port. Subsequently, it enters the third compression unit 10c through its suction port, and after being driven and compressed by the third compression unit 10c, it is discharged to the compressor's exhaust port through its exhaust port. With the second compression unit 10b and the third compression unit 10c connected in series, the volume ratio of the compressor 100 is not less than the product of the volume ratios of the second compression unit 10b and the third compression unit 10c, thereby achieving a high pressure ratio.

[0097] The first compression unit 10a, the second compression unit 10b, and the third compression unit 10c in this application can be connected in series, in parallel, or in a mixed configuration. For example, the first compression unit 10a and the second compression unit 10b can be configured as a first state, and the second compression unit 10b and the third compression unit 10c as a fourth state; the first compression unit 10a and the second compression unit 10b can be configured as a first state, and the second compression unit 10b and the third compression unit 10c as a fifth state; the first compression unit 10a and the second compression unit 10b can be configured as a second state, and the second compression unit 10b and the third compression unit 10c as a fourth state; the first compression unit 10a and the second compression unit 10b can be configured as a second state, and the second compression unit 10b and the third compression unit 10c as a fifth state. Of course, other connection forms can be used between the first compression unit 10a, the second compression unit 10b, and the third compression unit 10c in this application, such as only the first compression unit 10a being connected to the power source; or only the first compression unit 10a and the second compression unit 10b being connected to the power source; or all three compression units 10a, the second compression unit 10b, and the third compression unit 10c being connected to the power source, etc.

[0098] The compressor 100 also includes a second valve group, which is used to control the switching between the second compression unit 10b and the third compression unit 10c in the fourth state and the fifth state.

[0099] Optionally, in the fourth state, the second valve group controls the exhaust port of the second compression unit 10b to connect to the exhaust port of the compressor, and the suction port of the third compression unit 10c to connect to the suction port of the compressor, with the second compression unit 10b and the third compression unit 10c connected in parallel; in the fifth state, the second valve group is configured to control the exhaust port of the second compression unit 10b to connect to the suction port of the third compression unit 10c, with the second compression unit 10b and the third compression unit 10c connected in series.

[0100] The second valve assembly may include a second switching valve 223, which controls the connection between the exhaust port of the second compression unit 10b and the intake port of the third compression unit 10c. In the fourth state, the second switching valve 223 is closed; in the fifth state, the second switching valve 223 is open to connect the second and third compression units.

[0101] The second valve assembly also includes a second suction valve 222, which controls the connection between the compressor's suction port and the suction port of the third compression unit 10c. The suction port of the third compression unit is selectively connected to the compressor's suction port via the second suction valve 222. In some examples, the second suction valve 222 is configured as a one-way suction structure. That is, the second suction valve 222 is configured to allow airflow to flow unidirectionally from the compressor's suction port to the suction port of the third compression unit 10c, while fluid flowing from the suction port of the third compression unit 10c toward the compressor's suction port will be blocked by the second suction valve 222. The second suction valve 222 has a certain opening pressure.

[0102] The second valve assembly also includes a second exhaust valve 221, which controls the connection between the exhaust port of the second compression unit 10b and the exhaust port of the compressor. The exhaust port of the second compression unit is selectively connected to the exhaust port of the compressor via the second exhaust valve 221. In some examples, the second exhaust valve 221 is configured as a one-way exhaust structure. That is, the second exhaust valve 221 is configured to allow airflow to flow unidirectionally from the exhaust port of the second compression unit 10b to the exhaust port of the compressor, while fluid flowing from the compressor's exhaust port toward the exhaust port of the second compression unit 10b will be blocked by the second exhaust valve 221. The second exhaust valve 221 has a certain opening pressure.

[0103] The compressor 100 may further include a second exhaust chamber 2021, which is connected to the exhaust port of the second compression unit and optionally connected to the exhaust port of the compressor. The second exhaust chamber 2021 is connected to the exhaust port of the second compression unit 10b, and fluid compressed by the second compression unit 10b will flow into the second exhaust chamber 2021. Specifically, in a fourth state, the second exhaust chamber 2021 is connected to the compressor's exhaust port, and when the fluid pressure within the second exhaust chamber 2021 reaches a predetermined value, it will flow into the compressor's exhaust port; in a fifth state, the second exhaust chamber 2021 is connected to the second suction chamber 2022.

[0104] The compressor 100 may further include a second suction chamber 2022, which is connected to the suction port of the third compression unit and optionally connected to the suction port of the compressor. The second suction chamber 2022 may be configured to connect to the suction port of the third compression unit 10c, and fluid within the second suction chamber 2022 can enter the third compression unit 10c. Specifically, in a fourth state, the second suction chamber 2022 is connected to the suction port of the compressor, and when the fluid pressure within the second suction chamber 2022 is lower than a predetermined value, fluid will flow from the compressor's suction port into the second suction chamber 2022; in a fifth state, the second suction chamber 2022 is connected to the second discharge chamber 2021.

[0105] The second exhaust chamber 2021 and the second intake chamber 2022 can be disposed between the second compression unit 10b and the third compression unit 10c. Further, the second compression unit 10b and the third compression unit 10c are distributed along the axial direction of the housing 20, and a second partition 22 is provided between the second compression unit 10b and the third compression unit 10c, separating the second exhaust chamber 2021 and the second intake chamber 2022 along the axial direction of the housing 20. Through the second partition 22, the second exhaust chamber 2021 can be constructed in the space between the second partition 22 and the second compression unit 10b, and the second intake chamber 2022 can also be constructed between the second partition 22 and the third compression unit 10c, simplifying the structure of the compressor 100.

[0106] In the fourth and fifth states, the second compression unit 10b and the third compression unit 10c are connected by a drive. Additionally, the second compression unit 10b and the third compression unit 10c also have a sixth state, in which the first compression unit 10a and the second compression unit 10b are disconnected from each other.

[0107] In conjunction with the foregoing, the compressor 100 may have operating modes including but not limited to the following.

[0108] Minimum Displacement Mode: The first compression unit 10a is disconnected from the second compression unit 10b, and the second compression unit 10b and the third compression unit 10c are not powered. The first switching valve 213 and the second switching valve 223 are closed. Only the first compression unit 10a operates, and the displacement is the displacement of the first compression unit 10a, which is the minimum displacement of the entire system. In this operating mode, a portion of the refrigerant enters the first compression unit from side A. After being compressed by the first compression unit 10a, the refrigerant reaches the first exhaust chamber 2011, passes through the first exhaust valve 211 to the exhaust passage 2005, and is then discharged from the exhaust port 2002 of the exhaust passage 2005, finally exiting from the compressor's exhaust port. Side A of the first compression unit is connected to the compressor's intake port, and the exhaust port 2002 of the exhaust passage 2005 is connected to the compressor's exhaust port.

[0109] Medium displacement mode: The first compression unit 10a is connected to the second compression unit 10b via a drive connection, the second compression unit 10b is disconnected from the third compression unit 10c, the third compression unit 10c is not powered, and the first switching valve 213 and the second switching valve 223 are closed. The first compression unit 10a and the second compression unit 10b operate in parallel, and the system displacement is the sum of the displacements of the first compression unit 10a and the second compression unit 10b. In this operating mode, a portion of the refrigerant enters the first compression unit from side A, is compressed by the first compression unit 10a, reaches the first exhaust chamber 2011, passes through the first exhaust valve 211 to the exhaust passage 2005, is discharged from the exhaust port 2002 of the exhaust passage 2005, and finally is discharged from the compressor's exhaust port. Meanwhile, another portion of the refrigerant enters the suction channel 2004 from the suction port 2001, passes through the first suction valve 212 into the first suction chamber 2012, is compressed by the second compression unit 10b, reaches the second exhaust chamber 2021, passes through the second exhaust valve 221 to the exhaust channel 2005, is discharged from the exhaust port 2002 of the exhaust channel 2005, and finally is discharged from the compressor's exhaust port. Specifically, one side A of the first compression unit and the suction port 2001 of the suction channel 2004 are both connected to the compressor's suction port, and the exhaust port 2002 of the exhaust channel 2005 is connected to the compressor's exhaust port.

[0110] Maximum displacement mode: such as Figure 3 The first compression unit 10a is driven to the second compression unit 10b, and the second compression unit 10b is driven to the third compression unit 10c. Power is supplied to the first compression unit 10a, the second compression unit 10b, and the third compression unit 10c, and the first switching valve 213 and the second switching valve 223 are closed. The first compression unit 10a, the second compression unit 10b, and the third compression unit 10c operate in parallel. At this time, the system displacement is the sum of the displacements of the first compression unit 10a, the second compression unit 10b, and the third compression unit 10c, which is the maximum displacement. In this operating mode, such as... Figure 3A portion of the refrigerant enters the first compression unit from side A of the first compression unit. After being compressed by the first compression unit 10a, it reaches the first exhaust chamber 2011, passes through the first exhaust valve 211 to the exhaust passage 2005, and is then discharged from the exhaust port 2002 of the exhaust passage 2005, finally exiting from the compressor's exhaust port. Simultaneously, another portion of the refrigerant enters the intake passage 2004 from the intake port 2001, passes through the first intake valve 212 to the first intake chamber 2012, is then compressed by the second compression unit 10b, reaches the second exhaust chamber 2021, passes through the second exhaust valve 221 to the exhaust passage 2005, is then discharged from the exhaust port 2002 of the exhaust passage 2005, and finally exits from the compressor's exhaust port. The last portion of the refrigerant enters the suction channel 2004 through the suction port 2001, passes through the second suction valve 222 into the second suction chamber 2022, is compressed by the third compression unit 10c, reaches the third exhaust chamber 2030, passes through the exhaust port 2003 into the exhaust channel 2005, is discharged from the exhaust port 2002 of the exhaust channel 2005, and finally exits from the compressor's exhaust port. Specifically, one side A of the first compression unit and the suction port 2001 of the suction channel 2004 are both connected to the compressor's suction port, and the exhaust port 2002 of the exhaust channel 2005 is connected to the compressor's exhaust port.

[0111] High pressure ratio and small displacement mode: such as Figure 4The first compression unit 10a is driven to the second compression unit 10b, and the second compression unit 10b is driven to the third compression unit 10c. Power is supplied to all three compression units, and the first switching valve 213 and the second switching valve 223 are opened. At this time, the first compression unit 10a, the second compression unit 10b, and the third compression unit 10c operate in series. The maximum internal volume ratio of the system is the product of the internal volume ratios of the first compression unit 10a, the second compression unit 10b, and the third compression unit 10c, and the displacement is the displacement of the first compression unit 10a. In this operating mode, the refrigerant enters the first compression unit from side A of the first compression unit, is compressed by the first compression unit 10a, reaches the first exhaust chamber 2011, passes through the first switching valve 213 to the first intake chamber 2012, is then compressed by the second compression unit 10b, reaches the second exhaust chamber 2021, enters the second intake chamber 2022 through the second switching valve 223, is compressed by the third compression unit 10c, reaches the third exhaust chamber 2030, passes through the outlet 2003 to the exhaust passage 2005, is discharged from the exhaust port 2002 of the exhaust passage 2005, and finally is discharged from the compressor's exhaust port. During the above process, if the pressure in the first exhaust chamber 2011 or the second exhaust chamber 2021 is too high, the refrigerant can be discharged through the first exhaust valve 211 or the second exhaust valve 221 into the exhaust passage 2005. If the suction pressure in the first suction chamber 2012 or the second suction chamber 2022 is too low, the refrigerant in the suction passage 2004 will enter the first suction chamber 2012 through the first suction valve 212 or the second suction chamber 2022 through the second suction valve 222 for replenishment. One side A of the first compression unit is connected to the compressor's suction port, and the exhaust port 2002 of the exhaust passage 2005 is connected to the compressor's exhaust port.

[0112] Medium pressure ratio and large displacement mode: The first compression unit 10a is driven to the second compression unit 10b, and the second compression unit 10b is driven to the third compression unit 10c. The first compression unit 10a, the second compression unit 10b, and the third compression unit 10c are powered. The first switching valve 213 is open, and the second switching valve 223 is closed. At this time, the first compression unit 10a, the second compression unit 10b, and the third compression unit 10c operate in series. The maximum internal volume ratio of the system is the product of the internal volume ratios of the first compression unit 10a and the second compression unit 10b, and the displacement is the sum of the displacements of the first compression unit 10a and the third compression unit 10c. In this operating mode, a portion of the refrigerant enters the first compression unit from side A of the first compression unit, is compressed by the first compression unit 10a, reaches the first exhaust chamber 2011, passes through the first switching valve 213 to the first intake chamber 2012, is then compressed by the second compression unit 10b, reaches the second exhaust chamber 2021, passes through the second exhaust valve 221 to enter the exhaust passage 2005, is discharged from the exhaust port 2002 of the exhaust passage 2005, and finally is discharged from the compressor's exhaust port. Another portion of the refrigerant enters the intake passage 2004 from the intake port 2001, passes through the second intake valve to enter the second intake chamber 2022, is compressed by the third compression unit 10c, reaches the third exhaust chamber 2030, passes through the outlet 2003 to the exhaust passage 2005, is discharged from the exhaust port 2002 of the exhaust passage 2005, and finally is discharged from the compressor's exhaust port. In the above process, if the pressure in the first exhaust chamber 2011 is too high, the refrigerant can be discharged through the first exhaust valve 211 into the exhaust passage 2005; if the suction pressure in the first suction chamber 2012 is too low, the refrigerant in the suction passage 2004 will enter the first suction chamber 2012 through the first suction valve 212 for replenishment. Specifically, one side A of the first compression unit and the suction port 2001 of the suction passage 2004 are both connected to the compressor's suction port, and the exhaust port 2002 of the exhaust passage 2005 is connected to the compressor's exhaust port.

[0113] Medium pressure ratio and small displacement mode: The first compression unit 10a is connected to the second compression unit 10b, the second compression unit 10b is disconnected from the third compression unit 10c, the third compression unit 10c is not powered, the first switching valve 213 is open, and the second switching valve 223 is closed. At this time, the maximum internal volume ratio of the system is the product of the internal volume ratios of the first compression unit 10a and the second compression unit 10b, and the displacement is the displacement of the first compression unit 10a. In this working mode, a portion of the refrigerant enters the first compression unit from side A, is compressed by the first compression unit 10a, reaches the first exhaust chamber 2011, reaches the first intake chamber 2012 through the first switching valve 213, is then compressed by the second compression unit 10b, reaches the second exhaust chamber 2021, enters the exhaust passage 2005 through the second exhaust valve 221, is discharged from the exhaust port 2002 of the exhaust passage 2005, and finally is discharged from the compressor's exhaust port. In the above process, if the pressure in the first exhaust chamber 2011 is too high, the refrigerant can be discharged through the first exhaust valve 211 into the exhaust passage 2005; if the suction pressure in the first suction chamber 2012 is too low, the refrigerant in the suction passage 2004 will enter the first suction chamber 2012 through the first suction valve 212 for replenishment. Specifically, one side A of the first compression unit and the suction port 2001 of the suction passage 2004 are both connected to the compressor's suction port, and the exhaust port 2002 of the exhaust passage 2005 is connected to the compressor's exhaust port.

[0114] It should be noted that Embodiment 1 in this application is mainly described using multiple compression units, including a first compression unit 10a and a second compression unit 10b, as an example; Embodiment 2 is mainly described using multiple compression units, including a first compression unit 10a, a second compression unit 10b, and a third compression unit 10c, as an example. However, this does not mean that the compression units in this application can only be two or three. The number of compression units in this application can also be set to four, five, or six, etc. Based on the preceding description of this application, it is easy to obtain more arrangements of compression units and methods such as series connection, parallel connection, or mixed connection, which will not be elaborated further in this application.

[0115] like Figures 1 to 4 In some embodiments of this application, multiple compression units are distributed along the axial direction within the housing 20. This facilitates the arrangement of multiple compression units and allows for easy switching between parallel, series, and mixed configurations. A separator can be provided between adjacent compression units to separate the exhaust chamber and the intake chamber, and a switching valve on the separator can connect and disconnect the exhaust chamber and the intake chamber.

[0116] The multiple compression units can be configured with a transmission connection, with controllable couplings or clutches connecting adjacent compression units. This allows for the transmission connection or disconnection between the multiple compression units, enabling selective power supply to one or more compression units via a drive component. Alternatively, the overcompression unit in this application can be independently driven, or partially linked and partially independently driven, etc.

[0117] In conjunction with the foregoing embodiments, multiple compression units are provided with structures such as suction chambers and exhaust chambers. Air can be drawn in from the compressor's suction port through the suction chambers, and air can be discharged towards the compressor's exhaust port through the exhaust chambers. To facilitate fluid flow, the peripheral wall of the housing 20 of this application is provided with an exhaust channel 2005 arranged axially along the housing 20, which connects to the compressor's exhaust port. Additionally, a suction channel 2004 arranged axially along the housing 20 can also be provided on the peripheral wall of the housing 20, which connects to the compressor's suction port. This simplifies the flow path and improves the operational stability of the compressor 100.

[0118] Optionally, in the axial direction, the displacement of the compression unit in the previous stage is greater than that of the compression unit in the next stage. This can improve the operational stability of the compressor 100.

[0119] According to the embodiments of this application, the compressor 100 can utilize a controllable coupling and a large-diameter valve (such as the aforementioned first switching valve 213 or second switching valve 223) to connect multiple compression units in series into a multi-stage compression structure. The first-stage compression unit has the largest displacement, and the displacement of each subsequent compression unit is smaller than that of the previous stage. Multi-stage compression units can increase the internal volume ratio of the compressor 100, thereby increasing the compression ratio of the compressor 100 and enhancing its adaptability to high-pressure-ratio operating conditions. Furthermore, by utilizing the controllable coupling and large-diameter valve, multiple compression units can be selectively connected in parallel, in series, or in mixed configurations to form compressors 100 with different displacements, improving the performance of the compressor 100 under varying operating conditions.

[0120] In the series configuration, each compression unit has an independent back pressure chamber at its exhaust position. The back pressure chamber is connected to the intake passage 2004 and the exhaust passage 2005 via a one-way valve. This avoids "gas shortage" and "gas hold-up" between the two compression stages, improving the adaptability of the multi-stage compression structure to varying operating conditions. The back pressure chamber may include the aforementioned first intake chamber 2012 and first exhaust chamber 2011; or it may include the aforementioned second intake chamber 2022 and second exhaust chamber 2021.

[0121] In addition, by using controllable couplings and large-diameter valves, several compression units can be connected in series and in parallel with the remaining compression units to achieve the function of simultaneously changing the displacement and internal volume ratio, further expanding the operating range of the compressor 100.

[0122] Combination Figures 5 to 7 The compression unit in this application can be a vortex compression structure, wherein, for example... Figure 6 In some embodiments, the compression unit 10 includes a stationary scroll 101, a moving scroll 102, and an anti-rotation structure (not shown in the figure). The anti-rotation structure is stationary relative to the stationary scroll 101. One of the moving scroll 102 and the anti-rotation structure is provided with at least one anti-rotation ring 1021, and the other is provided with a positioning part. The positioning part is movably positioned around a fixed radius on the anti-rotation ring. Optionally, multiple anti-rotation rings are machined on the back of the base plate of the moving scroll. With the cooperation of multiple pins fixed in other positions, the anti-rotation function can be realized.

[0123] In addition, such as Figure 4 and Figure 5 The stationary vortex disk 101 is provided with an exhaust port 1002 and an exhaust structure 1006. The exhaust structure 1006 may include a reed valve 10061, a lift limiter 10062, and a fastener 10063. The reed valve can only open in one direction, and the lift is limited by the lift limiter. The above structure is one possible form of exhaust structure.

[0124] The arrangement of the multiple compression units in this application includes, but is not limited to, the following embodiments.

[0125] In one embodiment, at least one of the multiple compression units is configured as a multi-tooth scroll compression structure.

[0126] In the second embodiment, at least one of the multiple compression units is configured as a single-tooth scroll compression structure.

[0127] In the third implementation method, a portion of the multiple compression units is configured as a multi-tooth scroll compression structure, while another portion is configured as a single-tooth scroll compression structure. For example, the last stage compression unit is configured as a single-tooth scroll compression structure, while the other compression units are configured as multi-tooth scroll compression structures.

[0128] This application adopts a multi-tooth scroll structure. Utilizing the characteristics of multiple teeth, compared with traditional positive displacement compressors, it has fewer moving parts, simpler assembly, lower vibration and noise, smaller overall structural size, and smoother energy conversion process.

[0129] like Figures 8 to 10The multi-tooth scroll compression structure includes a first scroll disk 11 and a second scroll disk 12. The first scroll disk 11 includes a first base plate 111 and a plurality of first scroll teeth 112, which are disposed on the first base plate 111. The second scroll disk 12 includes a second base plate 121 and a plurality of second scroll teeth 122, which are disposed on the second base plate 121. The plurality of first scroll teeth 112 construct a plurality of compression channels 1001. The first base plate 111 or the second base plate 121 is provided with a plurality of exhaust holes 1002, which are respectively connected to the plurality of compression channels 1001. The plurality of second scroll teeth 122 respectively mesh with the plurality of first scroll teeth 112 to drive fluid along the corresponding compression channel 1001 to the corresponding exhaust hole 1002.

[0130] Multiple first vortex teeth 112 and multiple second vortex teeth 122 mesh to form a vortex compression structure, and drive the fluid in the corresponding compression channel 1001 to its respective exhaust port 1002. The compression process of the fluid in the multiple compression channels 1001 is relatively independent, which can reduce the mutual influence of the fluid compression process in the multiple compression channels 1001, and can reduce the clearance volume of the compression unit 10, thereby improving the performance of the compression unit 10. In addition, compared with the solution of discharging the fluid of multiple compression channels 1001 through the same opening, the present application exhausts through multiple exhaust ports 1002, which can avoid or reduce the problems of fluid gathering at the same opening and causing turbulence, thus affecting the compression performance.

[0131] In this application, the number of first vortex teeth 112 can be two, three, four, six, etc., the number of second vortex teeth 122 can be the same as the number of first vortex teeth 112, and the number of compression channels 1001 can be the same as the number of first vortex teeth 112.

[0132] In addition, such as Figure 11 The inner end of the compression channel 1001 is closed, and the exhaust port 1002 is connected to the inner end of the corresponding compression channel 1001. During the compression of the fluid by the first scroll plate 11 and the second scroll plate 12, the fluid will be driven to flow to the inner end of the compression channel 1001. When the inner end of the compression channel 1001 is closed, the fluid will be discharged through the corresponding exhaust port 1002. This can separate multiple compression channels 1001, and each compression channel 1001 can exhaust independently through the corresponding exhaust port 1002, which can reduce the mutual influence between multiple compression channels 1001. Multiple first scroll teeth 112 can be distributed circumferentially along the first base plate 111. Compression channels 1001 will be formed between adjacent first scroll teeth 112, and the inner end of the compression channels 1001 constructed between adjacent first scroll teeth 112 is closed.

[0133] In addition, such as Figure 11The first scroll disk 11 also includes a protrusion 1003, which is disposed on the first base plate 111. A plurality of first scroll teeth 112 are connected to the protrusion 1003 and arranged around the protrusion 1003 to form an integral multi-tooth structure. The protrusion 1003 can close the inner end of the compression channel 1001 constructed between adjacent first scroll teeth 112, and the connection of the protrusion 1003 can improve the structural strength of the plurality of first scroll teeth 112 and the first base plate 111.

[0134] Optionally, such as Figure 12 Multiple second vortex teeth 122 are distributed circumferentially along the second base plate 121, and adjacent second vortex teeth 122 are spaced apart to form a vertical multi-tooth structure. This allows the multiple second vortex teeth 122 to mesh with the multiple first vortex teeth 112 respectively, so as to compress the fluid.

[0135] like Figure 13 The first vortex disk 11 is provided with a first central through hole 1004, and a plurality of first vortex teeth 112 are distributed around the first central through hole 1004; and / or, as Figure 14 The second scroll plate 12 is provided with a second central through hole 1005, and a plurality of second scroll teeth 122 are distributed around the second central through hole 1005. When the compression unit 10 is connected to the crankshaft, the crankshaft can be passed through the first central through hole 1004 and the second central through hole 1005, so that when the crankshaft rotates, it drives the first scroll plate 11 and the second scroll plate 12 to translate relative to each other. In this way, multiple compression units 10 can be connected by crankshaft transmission by connecting the crankshaft through the compression unit 10.

[0136] Of course, the first scroll plate 11 may not have the first central through hole 1004, and the end of the crankshaft may be connected to the first scroll plate 11; or, the second scroll plate 12 may not have the second central through hole 1005, and the end of the crankshaft may be connected to the second scroll plate 12.

[0137] In addition, combined Figures 15 to 18 At least two of the multiple first vortex teeth 112 have a phase difference in their meshing with the corresponding second vortex teeth 122. With this arrangement, when at least two first vortex teeth 112 compress fluid, the corresponding exhaust ports 1002 will not exhaust fluid simultaneously. In this way, the fluid in the multiple compression channels 1001 will be discharged from the compression unit 10 in sequence, which can avoid problems such as vibration caused by multiple exhaust ports 1002 venting and stopping at the same time.

[0138] Furthermore, the meshing of multiple first vortex teeth 112 with corresponding second vortex teeth 122 has a phase difference, and the meshing phase difference α between adjacent first vortex teeth 112 and corresponding second vortex teeth 122 in time sequence satisfies α=360° / i, where i is the number of first vortex teeth 112.

[0139] For example, if there are two first vortex teeth 112, the meshing phase difference between adjacent first vortex teeth 112 and their corresponding second vortex teeth 122 is 180°. In other words, when the compression channel corresponding to one first vortex tooth 112 is in the exhaust stage, the compression channel corresponding to another first vortex tooth 112 is in the intake stage. Alternatively, if there are three first vortex teeth 112, the meshing phase difference between adjacent first vortex teeth 112 and their corresponding second vortex teeth 122 is 120°. In other words, when the compression channel corresponding to one first vortex tooth 112 is in the intake stage, the compression channel corresponding to another first vortex tooth 112 is in the compression stage, and the compression channel corresponding to one first vortex tooth 112 is in the exhaust stage. Or, if there are four first vortex teeth 112, the meshing phase difference between adjacent first vortex teeth 112 and their corresponding second vortex teeth 122 is 90°. Of course, the number of the first vortex teeth 112 in this application can also be 5, 6, etc., which will not be elaborated here.

[0140] In this application, one of the first scroll disk 11 and the second scroll disk 12 can be a stationary scroll disk, and the other can be a moving scroll disk. The moving scroll disk can translate around the axis of the stationary scroll disk with a fixed revolution radius, thereby achieving fluid compression. The cooperation between the first scroll disk 11 and the second scroll disk 12 in this application includes, but is not limited to, the following embodiments.

[0141] In one implementation, combined with Figures 10 to 14 The first scroll disk 11 is configured as a stationary scroll disk, and the second scroll disk 12 is configured as a moving scroll disk. The second scroll disk 12 translates around the axis of the first scroll disk 11 with a fixed revolution radius.

[0142] In another implementation, such as Figure 19 and Figure 20 The first scroll disk 11 is configured as a moving scroll disk, and the second scroll disk 12 is configured as a stationary scroll disk. The first scroll disk 11 translates around the axis of the second scroll disk 12 with a fixed revolution radius.

[0143] The meshing process of the first scroll plate 11 and the second scroll plate 12 can be referred to Figures 15 to 18 The compression unit 10 of this application will significantly reduce the vibration and noise of the compressor.

[0144] In some embodiments, multiple exhaust ports 1002 are disposed on the stationary scroll plate for exhausting from multiple compression channels 1001. The compression unit 10 also includes a crankshaft, which includes a main journal and a connecting rod journal. The main journal is rotatably connected to the stationary scroll plate, and the connecting rod journal is rotatably connected to the moving scroll plate, for driving the moving scroll plate to translate around the axis of the stationary scroll plate with a fixed radius. The stationary scroll plate has a central through hole, and multiple exhaust ports 1002 are distributed around the central through hole. The central through hole can be used for the crankshaft to pass through, and the stationary scroll plate can provide support for the crankshaft. At the same time, the exhaust ports 1002 surrounding the central through hole facilitate the exhaust of the compression unit 10 and prevent the crankshaft passing through the central through hole from affecting the exhaust of the compression unit 10.

[0145] The above structure employs a multi-tooth scroll structure, which can significantly reduce gas torque pulsation and exhaust mass flow pulsation, thereby reducing the overall vibration and noise of the compressor. In some embodiments of this application, such as... Figure 21 As shown, taking R134a refrigerant as an example, assuming a compressor displacement of 34cc, a displacement of 8.5cc per compression channel 1001, a suction pressure of 0.3MPa, a discharge pressure of 1.5MPa, a suction superheat of 10K, and a compressor speed of 3000rpm, the gas torque pulsation value is 0.06N*m, while that of a traditional single-tooth scroll compressor is 1.26N*m, representing a 95% reduction in pulsation. This significant improvement in gas torque pulsation and the cancellation of gas force will effectively improve the compressor's vibration and noise problems.

[0146] In other embodiments of this application, such as Figure 22 As shown, taking R134a refrigerant as an example, assuming the compressor displacement is 34cc, the displacement of each compression channel 1001 is 8.5cc, the suction pressure is 0.3MPa, the discharge pressure is 1.5MPa, the suction superheat is 10K, and the compressor speed is 3000rpm, then the discharge mass flow rate pulsation value is 0.010 kg / s, while that of a traditional single-tooth scroll compressor is 0.056 kg / s, a decrease of 82%.

[0147] like Figure 23 and Figure 24 The single-tooth scroll compression structure includes a third scroll disk 13 and a fourth scroll disk 14. The third scroll disk 13 includes a third base plate 131 and a third scroll tooth 132 disposed on the third base plate 131. The fourth scroll disk 14 includes a fourth base plate 141 and a fourth scroll tooth 142 disposed on the fourth base plate 141. The fourth scroll tooth 142 meshes with the third scroll tooth 141. In this case, one of the third scroll disk 13 and the fourth scroll disk 14 is a moving scroll disk and the other is a stationary scroll disk.

[0148] A compressor 100 according to a specific embodiment of this application is shown in the figure, including a crankshaft 30, which transmits torque to a first compression unit 10a, a second compression unit 10b and a third compression unit 10c.

[0149] The first compression unit 10a and the second compression unit 10b include a first exhaust chamber 2011, a first exhaust valve 211, a first coupling 41, a first switching valve 213, a first intake chamber 2012, and a first intake valve 212; the second compression unit 10b and the third compression unit 10c include a second exhaust chamber 2021, a second exhaust valve 221, a second coupling 42, a second switching valve 223, a second intake chamber 2022, and a second intake valve 222. Additionally, a third exhaust chamber 2030 is immediately following the back of the third compression unit 10c.

[0150] The core process of the compression unit's moving and stationary scroll plates is shown in the figure. The stationary scroll plate translates around the axis of crankshaft 30 with a fixed revolution radius (counterclockwise in the plane of the paper). Multiple scroll teeth (e.g., four) of the moving scroll plate form multiple meshing points with the scroll teeth of the stationary scroll plate, and form multiple independent compression channels 1001. When the multiple scroll tooth structures are identical, the displacement of each channel is one-Nth of the total displacement of the scroll plates (N is the number of scroll teeth of the moving scroll plate). Multiple meshing points divide the volume between the moving and stationary scroll plates into multiple crescent-shaped cavities. As the translation continues, the meshing points move, and the volume of the crescent-shaped cavities gradually decreases, thereby performing work on the refrigerant. As the volume of the refrigerant is compressed, its position gradually moves from the edge of the scroll plate to the center of the scroll plate, approaching the multiple exhaust ports 1002.

[0151] Furthermore, the aforementioned controllable coupling can be either electromagnetically controlled or pneumatically controlled. The first switching valve 213 or the second switching valve 223 can also be either electromagnetically controlled or pneumatically controlled.

[0152] The thermal management system according to an embodiment of this application includes the aforementioned compressor.

[0153] According to the control method of this application embodiment, a compressor is used to control the aforementioned compressor. Multiple compression units include a first compression unit 10a and a second compression unit 10b, which are connected in parallel in a first state; the first compression unit 10a and the second compression unit 10b also have a second state connected in series; the compressor further includes a first valve group. The control method includes controlling the first valve group to switch the first compression unit 10a and the second compression unit 10b between the first state and the second state. According to this control method, the compressor can be easily switched between different states, and the flow rate, pressure ratio, etc., of the compressor can be adjusted.

[0154] In conjunction with the foregoing embodiments, the first valve group includes a first switching valve, which can switch the first compression unit 10a and the second compression unit 10b between a first state and a second state by controlling the closing and opening of the first switching valve.

[0155] For example, in the first state, the first compression unit 10a and the second compression unit 10b are driven together, which can control the first switching valve 213 (e.g., a large displacement valve) to close; in the second state, the first compression unit 10a and the second compression unit 10b are driven together, which can control the first switching valve 213 (e.g., a large displacement valve) to open.

[0156] The first compression unit 10a and the second compression unit 10b also have a third state. By controlling the first compression unit 10a and the second compression unit 10b to disconnect, the first compression unit 10a and the second compression unit 10b switch to the third state. By switching between the first state, the first state and the third state, the maximum displacement mode, the maximum pressure ratio mode and the small displacement mode of the aforementioned embodiment one are realized.

[0157] Furthermore, in conjunction with the foregoing, the compressor may also include a third compression unit 10c, with the second compression unit 10b and the third compression unit 10c having a fourth state of being connected in parallel; the second compression unit 10b and the third compression unit 10c may also have a fifth state of being connected in series; the compressor further includes a second valve group, and the control method includes controlling the second valve group to switch the second compression unit 10b and the third compression unit 10c between the fourth and fifth states. According to this control method, the compressor can be easily switched between different states, and the flow rate, pressure ratio, etc., of the compressor can be adjusted.

[0158] In conjunction with the foregoing embodiments, the second valve group includes a second switching valve, which can be used to switch the second compression unit 10b and the third compression unit 10c between the fourth and fifth states by controlling the closing and opening of the second switching valve.

[0159] For example, in the fourth state, the second compression unit 10b and the third compression unit 10c are driven together, which can control the second switching valve 223 (e.g., a large displacement valve) to close; in the fifth state, the second compression unit 10b and the third compression unit 10c are driven together, which can control the second switching valve 223 (e.g., a large displacement valve) to open.

[0160] The second compression unit 10b and the third compression unit 10c also have a sixth state. By controlling the second compression unit 10b and the third compression unit 10c to disconnect, the second compression unit 10b and the third compression unit 10c switch to the sixth state. By switching the first compression unit 10a and the second compression unit 10b between the first state, the first state and the third state, and by switching the second compression unit 10b and the third compression unit 10c between the fourth state, the fifth state and the sixth state, the minimum displacement mode, the medium displacement mode, the maximum displacement mode, the high pressure ratio and small displacement mode, the medium pressure ratio and large displacement mode, and the medium pressure ratio and small displacement mode of the aforementioned embodiment two are realized.

[0161] An electronic device according to an embodiment of this application includes a processor connected to a memory. The processor calls a computer program stored in the memory to implement the aforementioned control method.

[0162] The vehicle according to the embodiments of this application includes the aforementioned compressor; or includes the aforementioned thermal management system.

[0163] The thermal management system and vehicles provided in this application have multiple compression units, which can meet various operating conditions and increase the applicability of the compressor.

[0164] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0165] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0166] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0167] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0168] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A compressor (100), characterized in that, include: Shell (20); Multiple compression units are disposed within the housing (20), and the compressor is used to compress fluid; The plurality of compression units are distributed along the axial direction within the housing (20); The peripheral wall of the housing (20) is provided with an exhaust passage (2005) arranged along the axial direction of the housing (20), the exhaust passage (2005) is connected to the exhaust port of the compressor, and can be selectively connected to the exhaust ports of the plurality of compression units; the peripheral wall of the housing (20) is provided with an intake passage (2004) arranged along the axial direction of the housing (20), the intake passage (2004) is connected to the intake port of the compressor, and can be selectively connected to the intake ports of the plurality of compression units; A separator is provided between adjacent compression units to separate the exhaust chamber and the intake chamber, and a switch valve is provided on the separator to connect and disconnect the exhaust chamber and the intake chamber.

2. The compressor (100) according to claim 1, characterized in that, The plurality of compression units include a first compression unit (10a) and a second compression unit (10b). The first compression unit (10a) and the second compression unit (10b) are connected in parallel in a first state. The first compression unit (10a) and the second compression unit (10b) also have a second state in which they are connected in series.

3. The compressor (100) according to claim 2, characterized in that, The compressor (100) further includes a first valve group for controlling the first compression unit (10a) and the second compression unit (10b) to switch between the first state and the second state.

4. The compressor according to claim 3, characterized in that, The first valve assembly includes a first switching valve (213). In the first state, the first switching valve (213) is closed; in the second state, the first switching valve (213) is open to connect the first compression unit and the second compression unit.

5. The compressor according to claim 4, characterized in that, The first valve group further includes a first suction valve (212), and the suction port of the second compression unit can be selectively connected to the suction port of the compressor through the first suction valve (212); The first valve group also includes a first exhaust valve (211), through which the exhaust port of the first compression unit can be selectively connected to the exhaust port of the compressor.

6. The compressor (100) according to claim 5, characterized in that, The first exhaust valve (211) is configured as a one-way exhaust structure; or, the first intake valve (212) is configured as a one-way intake structure.

7. The compressor (100) according to claim 2, characterized in that, The compressor (100) further includes a first suction chamber (2012), which is connected to the suction port of the second compression unit and optionally connected to the suction port of the compressor. The compressor (100) further includes a first exhaust chamber (2011), which is connected to the exhaust port of the first compression unit and optionally connected to the exhaust port of the compressor.

8. The compressor (100) according to claim 7, characterized in that, The first compression unit (10a) and the second compression unit (10b) are distributed along the axial direction of the housing (20), and a first separator is provided between the first compression unit (10a) and the second compression unit (10b). The first separator separates the first exhaust chamber (2011) and the first intake chamber (2012) along the axial direction of the housing (20).

9. The compressor (100) according to claim 2, characterized in that, In the first state and the second state, the first compression unit (10a) and the second compression unit (10b) are connected by transmission; and / or, the first compression unit (10a) and the second compression unit (10b) also have a third state in which transmission is disconnected.

10. The compressor (100) according to any one of claims 2-8, characterized in that, The plurality of compression units also includes a third compression unit (10c). The second compression unit (10b) and the third compression unit (10c) have a fourth state in which they are connected in parallel. The second compression unit (10b) and the third compression unit (10c) also have a fifth state connected in series.

11. The compressor (100) according to claim 10, characterized in that, The compressor (100) further includes a second valve group for controlling the switching of the second compression unit (10b) and the third compression unit (10c) between the fourth state and the fifth state.

12. The compressor (100) according to claim 11, characterized in that, The second valve assembly also includes a second switching valve (223), which is closed in the fourth state and open in the fifth state to connect the second compression unit and the third compression unit.

13. The compressor (100) according to claim 12, characterized in that, The second valve group also includes a second suction valve (222), through which the suction port of the third compression unit can be selectively connected to the suction port of the compressor; The second valve group also includes a second exhaust valve (221), through which the exhaust port of the second compression unit can be selectively connected to the exhaust port of the compressor.

14. The compressor (100) according to claim 13, characterized in that, The second exhaust valve (221) is configured as a one-way exhaust structure; or, the second intake valve (222) is configured as a one-way intake structure.

15. The compressor (100) according to claim 10, characterized in that, The compressor (100) further includes a second suction chamber (2022), which is connected to the suction port of the third compression unit and optionally connected to the suction port of the compressor. The compressor (100) further includes a second exhaust chamber (2021), which is connected to the exhaust port of the second compression unit and optionally connected to the exhaust port of the compressor.

16. The compressor (100) according to claim 15, characterized in that, The second compression unit (10b) and the third compression unit (10c) are distributed along the axial direction of the housing (20), and a second separator is provided between the second compression unit (10b) and the third compression unit (10c). The second separator separates the second exhaust chamber (2021) and the second intake chamber (2022) along the axial direction of the housing (20).

17. The compressor (100) according to claim 10, characterized in that, In the fourth state and the fifth state, the second compression unit (10b) and the third compression unit (10c) are connected in a transmission; and / or, the second compression unit (10b) and the third compression unit (10c) also have a sixth state in which the transmission is disconnected.

18. The compressor (100) according to claim 1, characterized in that, A controllable coupling connects adjacent compression units; or, a clutch connects adjacent compression units; or, in the axial direction, the displacement of the compression unit at the next higher level is greater than the displacement of the compression unit at the next lower level.

19. The compressor (100) according to claim 1, characterized in that, At least one of the plurality of compression units is configured as a multi-tooth vortex compression structure.

20. The compressor (100) according to claim 19, characterized in that, The multi-tooth vortex compression structure includes a first vortex disk (11) and a second vortex disk (12). The first vortex disk (11) includes a first base plate (111) and a plurality of first vortex teeth (112) disposed on the first base plate (111). The second vortex disk (12) includes a second base plate (121) and a plurality of second vortex teeth (122) disposed on the second base plate (121). The plurality of first vortex teeth (112) construct a plurality of compression channels (1001). The first base plate (111) or the first vortex disk (122) is a first vortex disk (111) and a second vortex disk (122). The second base plate (121) is provided with a plurality of exhaust holes (1002) respectively connected to the plurality of compression channels (1001). The plurality of second vortex teeth (122) are respectively provided in the plurality of compression channels (1001) and respectively mesh with the plurality of first vortex teeth (112) for driving fluid along the compression channel (1001) to the corresponding exhaust hole (1002). Among them, one of the first vortex disk (11) and the second vortex disk (12) is a moving vortex disk and the other is a stationary vortex disk.

21. The compressor (100) according to claim 20, characterized in that, The stationary scroll has a first central through hole (1004), and the plurality of exhaust holes (1002) are provided on the stationary scroll and distributed around the first central through hole (1004). The moving scroll has a second central through hole (1005). The compressor (100) also includes a crankshaft (30), which includes a main journal and a connecting rod journal. The main journal passes through the first central through hole (1004), and the connecting rod journal passes through the second central through hole (1005).

22. The compressor (100) according to claim 1, characterized in that, At least one of the plurality of compression units is configured as a single-tooth vortex compression structure.

23. The compressor (100) according to claim 22, characterized in that, The single-tooth vortex compression structure includes a third vortex disk (13) and a fourth vortex disk (14). The third vortex disk (13) includes a third base plate (131) and a third vortex tooth (132) disposed on the third base plate (131). The fourth vortex disk (14) includes a fourth base plate (141) and a fourth vortex tooth (142) disposed on the fourth base plate (141). The fourth vortex tooth (142) meshes with the third vortex tooth (132). In this case, one of the third vortex disk (13) and the fourth vortex disk (14) is a moving vortex disk and the other is a stationary vortex disk.

24. The compressor (100) according to any one of claims 1-9, 11-23, characterized in that, The compression unit further includes a crankshaft (30), the compression units are distributed along the crankshaft (30) and are connected to the crankshaft (30) in a driving connection. The crankshaft (30) has a drive end and a free end. The drive end is used to connect a drive component. The compression units connected to the free end are configured as single-tooth scroll compression structures, and the other compression units are configured as multi-tooth scroll compression structures.

25. The compressor (100) according to claim 1, characterized in that, The plurality of compression units are driven by the same crankshaft (30); and / or, at least two of the compression units have a phase difference.

26. The compressor (100) according to claim 1, characterized in that, The compression unit includes a stationary volute, a moving volute, and an anti-rotation structure. The anti-rotation structure is stationary relative to the stationary volute. One of the moving volute and the anti-rotation structure is provided with at least one anti-rotation ring, and the other is provided with a positioning part. The positioning part is movably positioned around the anti-rotation ring.

27. A control method for controlling the compressor according to any one of claims 1-26, characterized in that, The plurality of compression units include a first compression unit (10a) and a second compression unit (10b), wherein the first compression unit (10a) and the second compression unit (10b) are connected in parallel in a first state; the first compression unit (10a) and the second compression unit (10b) are also connected in series in a second state; the compressor further includes a first valve group, and the control method includes: The first valve group is controlled to switch the first compression unit (10a) and the second compression unit (10b) between the first state and the second state.

28. An electronic device, characterized in that, The system includes a processor connected to a memory, which invokes a computer program stored in the memory to implement the control method of claim 27.

29. A thermal management system, characterized in that, Includes the compressor (100) according to any one of claims 1-26, and / or includes the electronic device according to claim 28.

30. A vehicle, characterized in that, It includes the compressor (100) according to any one of claims 1-26; or the electronic device according to claim 28; or the thermal management system according to claim 29.

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