Compressor and vehicle refrigerating system

Abstract

The utility model relates to the technical field of compressors, in particular to a compressor and a vehicle refrigerating system. The compressor exhaust port is communicated with the compressor air inlet; a suction inlet of the first vortex component is communicated with the compressor air inlet, and an exhaust port of the first vortex component is communicated with the compressor air outlet; a suction inlet of the second scroll component is communicated with the compressor air inlet, and an exhaust port of the second scroll component is communicated with the compressor air outlet; the driving mechanism is used for driving the first vortex component and the second vortex component to operate; the on-off assembly is arranged between the driving mechanism and the second vortex component and used for controlling on-off between the second vortex component and the driving mechanism so as to control operation of the second vortex component. According to the scheme, the displacement of the compressor can be adjusted according to the refrigeration requirement of the vehicle, the energy consumption of the vehicle is reduced, and the endurance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a compressor and a vehicle refrigeration system. Background Art

[0002] The function of the compressor is to compress and transport refrigerant vapor. Its working principle is to inhale low-temperature and low-pressure refrigerant gas from the suction pipe, drive the piston to compress the refrigerant gas through the operation of the motor, and then discharge high-temperature and high-pressure refrigerant gas to the exhaust pipe to provide power for the refrigeration cycle.

[0003] With the rapid development of new energy super-fast charging technology, the demand for battery cooling capacity is increasing, resulting in larger and larger compressor displacement. The compressor of existing new energy vehicles is a single scroll, and the compressor displacement generally ranges from 24cc to 64cc. Most of the time, the car does not have a high cooling demand, and the compressor is in a low speed and low displacement state. Since the compressor is a single scroll structure and the displacement cannot be adjusted, even if the required compressor displacement is far lower than the maximum displacement of the compressor at the time, as long as the compressor is running, it will require a lot of energy consumption, resulting in energy waste and reducing the vehicle's cruising range. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a compressor and a vehicle refrigeration system for solving the problem that the displacement of the compressor in the prior art cannot be adjusted according to demand and the energy consumption is relatively high.

[0005] In order to achieve the above-mentioned object and other related objects, the utility model provides a compressor, comprising:

[0006] Compressor air inlet, for air intake;

[0007] The compressor exhaust port is used for exhausting air;

[0008] a first scroll component, wherein a suction port of the first scroll component is communicated with an air inlet of the compressor, and a discharge port of the first scroll component is communicated with an exhaust port of the compressor;

[0009] a second scroll component, wherein a suction port of the second scroll component is communicated with an air inlet of the compressor, and a discharge port of the second scroll component is communicated with an exhaust port of the compressor;

[0010] A driving mechanism, configured to drive the first scroll component and the second scroll component to operate; and

[0011] The on-off assembly is arranged between the driving mechanism and the second scroll component, and is used to control the on-off between the second scroll component and the driving mechanism, so as to control the operation of the second scroll component.

[0012] Optionally, the compressor also includes a connecting valve, the on-off assembly includes a clutch, the connecting valve is arranged between the clutch and the compressor exhaust port, the connecting valve has at least a first joint and a second joint that are connected to each other, the first joint is connected to the suction port of the second scroll component, the second joint is connected to the compressor exhaust port, and a pressure switch for driving the clutch to be on and off is arranged between the first joint and the clutch.

[0013] Optionally, the connecting valve further includes a third connector, and the third connector is respectively connected to the first connector, the second connector and the air inlet of the compressor.

[0014] Optionally, the displacement of the first scroll component is equal to that of the second scroll component.

[0015] Optionally, the displacements of the first scroll component and the second scroll component are not equal.

[0016] Optionally, the compressor further comprises a housing, and the first scroll component and the second scroll component are respectively arranged at two ends of the housing along the axial direction thereof. Optionally, the driving mechanism comprises a motor, an air passage is arranged in the housing of the motor, and the suction port of the first scroll component and the suction port of the second scroll component are respectively connected to the compressor air inlet through the air passage of the motor.

[0017] Optionally, the first and second scroll components each include an orbiting scroll member and a non-orbiting scroll member, the orbiting scroll member and the non-orbiting scroll member forming a meshing engagement.

[0018] The utility model also provides a vehicle refrigeration system, comprising the compressor as described above.

[0019] As described above, the compressor of the utility model has the following beneficial effects:

[0020] An on-off assembly is provided between the driving mechanism and the second scroll component, and the on-off assembly is used to control the on-off of the transmission connection between the second scroll component and the driving mechanism to control the operation of the second scroll component. When the vehicle does not need the compressor to cool quickly, the first scroll component can meet the displacement requirement by working. At this time, the transmission connection between the second scroll component and the driving mechanism is disconnected, the second scroll component does not run, and the compressor displacement is equal to the displacement of the first scroll component. When the vehicle needs the compressor to cool quickly, only the operation of the first scroll component cannot meet the displacement requirement. At this time, the on-off assembly controls the transmission connection between the second scroll component and the driving mechanism to be turned on, and the second scroll component starts to run, and the displacement of the compressor is equal to the sum of the displacement of the first scroll component and the displacement of the second scroll component.

[0021] This solution adds a second scroll component so that the displacement of the compressor can be adjusted according to the cooling demand of the vehicle. When the cooling demand of the vehicle is not high, the second scroll component is closed to reduce the displacement of the compressor, reduce the energy consumption of the vehicle, and improve the vehicle's endurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the compressor principle of an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of the compressor principle of another embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the compressor structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the compressor of the present utility model.

[0026] Part Number Description

[0027] 1-compressor; 11-first scroll component; 111-intake port of the first scroll component; 112-discharge port of the first scroll component; 12-second scroll component; 121-intake port of the second scroll component; 122-discharge port of the second scroll component; 13-clutch; 14-driving mechanism; 15-compressor exhaust port; 16-compressor air inlet; 17-pressure switch; 18-connecting valve; 181-first connector; 182-second connector; 183-third connector; 19-controller; 2-condenser; 3-evaporator. DETAILED DESCRIPTION

[0028] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0029] It should be noted that the diagrams provided in the present embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, so the diagrams only show the components related to the present invention rather than the number, shape and size of the components in the actual implementation. The type, quantity and proportion of each component in the actual implementation can be changed at will, and the layout of the components may be more complicated. The structure, proportion, size, etc. shown in the diagrams attached to this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effect and purpose that the present invention can produce. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of the implementation of the present utility model without substantially changing the technical content.

[0030] See also Figure 1 The present embodiment provides a compressor, wherein the compressor 1 has a compressor air inlet 16 and a compressor exhaust port 15. The compressor air inlet 16 is used for air intake, and the compressor exhaust port 15 is used for exhaust. The compressor air inlet 16 introduces low-temperature and low-pressure gas, and the compressor exhaust port 15 discharges high-temperature and high-pressure gas. The compressor 1 comprises a first scroll component 11, a second scroll component 12, a driving mechanism 14, and an on-off assembly, wherein the suction port 111 of the first scroll component is connected to the compressor air inlet 16, and the exhaust port 112 of the first scroll component is connected to the compressor exhaust port 15. The suction port 121 of the second scroll component is connected to the compressor air inlet 16, and the exhaust port 122 of the second scroll component is connected to the compressor exhaust port 15. The driving mechanism 14 is used to drive the first scroll component 11 and the second scroll component 12 to operate respectively. The driving end of the driving mechanism 14 is respectively connected to the first scroll component 11 and the second scroll component 12. The driving mechanism 14 includes a double-shaft motor. The double-shaft motor is provided with motor shafts at both ends along its axial direction. The first scroll component 11 and the second scroll component 12 are driven by two motor shafts respectively. The on-off assembly is arranged between the driving mechanism 14 and the second scroll component 12. The on-off assembly is used to control the on-off of the transmission connection between the second scroll component 12 and the driving mechanism 14 to control the operation of the second scroll component 12. When the on-off assembly makes the transmission connection between the second scroll component 12 and the driving mechanism 14, the driving mechanism 14 drives the second scroll component 12 to operate; when the on-off assembly disconnects the transmission connection between the second scroll component 12 and the driving mechanism 14, the driving mechanism 14 cannot drive the second scroll component 12 to operate, so that the second scroll component 12 does not operate.

[0031] In this embodiment, an on-off assembly is provided between the driving mechanism 14 and the second scroll component 12, and the on-off assembly is used to control the on-off of the transmission connection between the second scroll component 12 and the driving mechanism 14, so as to control the operation of the second scroll component 12. When the vehicle does not need the compressor 1 to refrigerate quickly, the first scroll component 11 can meet the displacement requirement by working. At this time, the transmission connection between the second scroll component 12 and the driving mechanism 14 is disconnected, the second scroll component 12 does not operate, and the displacement of the compressor 1 is equal to the displacement of the first scroll component 11. When the vehicle needs the compressor 1 to refrigerate quickly, only the operation of the first scroll component 11 cannot meet the displacement requirement. At this time, the on-off assembly makes the transmission connection between the second scroll component 12 and the driving mechanism 14 conductive, the second scroll component 12 starts to operate, and the displacement of the compressor 1 is equal to the sum of the displacement of the first scroll component 11 and the displacement of the second scroll component 12.

[0032] In this embodiment, the displacement of the compressor 1 can be adjusted according to the cooling demand of the vehicle by adding the second scroll component 12. When the cooling demand of the vehicle is not high, the second scroll component 12 is closed to reduce the displacement of the compressor 1, reduce the energy consumption of the vehicle, and improve the endurance of the vehicle.

[0033] In one embodiment, if Figure 2 As shown, the compressor 1 further includes a connecting valve 18, and the on-off assembly includes a clutch 13. The connecting valve 18 is arranged between the clutch 13 and the compressor exhaust port 15, and the connecting valve 18 has at least a first joint 181 and a second joint 182, the first joint 181 is connected to the pressure switch 17, and the second joint 182 is connected to the compressor exhaust port 15. A pressure switch 17 for driving the clutch 13 to be on and off is arranged between the first joint 181 and the clutch 13, and the pressure switch 17 can also be arranged on the clutch 13. The matching relationship between the pressure switch 17 and the clutch 13, and the positional relationship between the pressure switch 17 and the clutch 13 are both prior art.

[0034] Specifically, the connection valve 18 is closed, so that the first joint 181 and the second joint 182 are not connected, and the high-temperature and high-pressure gas discharged from the compressor exhaust port 15 cannot flow from the second joint 182 to the first joint 181. Without the trigger of the high-temperature and high-pressure gas, the pressure switch 17 is not activated, the pressure switch 17 will not drive the clutch 13 to work, and the second scroll component 12 will not work. When the first joint 181 and the second joint 182 are connected, the high-temperature and high-pressure gas discharged from the compressor exhaust port 15 flows from the second joint 182 to the first joint 181 and flows through the pressure switch 17, and the high-temperature and high-pressure gas activates the pressure switch 17. The pressure switch 17 drives the clutch 13 to connect the transmission connection between the driving mechanism 14 and the second scroll component 12, and the second scroll component 12 works. The on and off of the pressure switch 17 driving the clutch 13 belongs to the prior art. When the second joint 182 and the first joint 181 are connected, the high-temperature and high-pressure gas generated by the compressor 1 itself drives the second scroll component 12 to work. The above structure is simple, occupies a small space, and utilizes the high temperature and high pressure gas generated by the compressor 1 itself to further reduce the energy consumption of the vehicle. The connecting valve 18 is an existing valve capable of realizing the above function, such as a ball valve, a plug valve, a butterfly valve, a gate valve, a stop valve, a needle valve, a solenoid valve, an angle seat valve, etc.

[0035] In one embodiment, if Figure 2 As shown, the connecting valve 18 also includes a third joint 183. At this time, the connecting valve 18 is a three-way valve, and can be a spherical three-way valve. The third joint 183 is connected to the first joint 181, the second joint 182 and the compressor air inlet 16 respectively. When the compressor 1 is in the preheating state, the hot gas bypass function is required. When the third joint 183 is connected to the second joint 182, and the third joint 183 is not connected to the first joint 181, since the first joint 181 is not connected, the second scroll component 12 is not working, and the displacement of the compressor 1 is equal to the displacement of the first scroll component 11. The high-temperature and high-pressure gas discharged from the compressor exhaust port 15 flows from the second joint 182 to the third joint 183, and then flows to the compressor air inlet 16, realizing the hot gas bypass function, and the hot gas bypass function is a prior art. As an energy regulation, the hot gas bypass can provide a method for bypassing the high-temperature gaseous refrigerant at the high-pressure end to the low-pressure end of the refrigeration system, thereby ensuring that the refrigeration system always operates under a given minimum return air pressure state. Through effective energy regulation, the evaporation pressure can be controlled and the following problems can be prevented: 1. Frequent start and stop of the system; 2. Compressor 1 operates below the designed return air pressure; 3. Frosting of the evaporator coil.

[0036] In one embodiment, the displacements of the first scroll component 11 and the second scroll component 12 may be equal or unequal. The displacement relationship between the first scroll component 11 and the second scroll component 12 may be adjusted according to the requirements of the vehicle for the compressor 1 .

[0037] In one embodiment, if Figure 3 As shown, the compressor 1 further includes a housing, a first scroll component 11 and a second scroll component 12 are respectively arranged at two ends of the housing along the axial direction thereof, and a driving mechanism 14 is arranged between the first scroll component 11 and the second scroll component 12. The above structure can reduce the space occupied by the first scroll component 11, the second scroll component 12 and the driving mechanism 14, facilitate the arrangement of other components in the compressor 1, and also avoid the compressor 1 from being too large and bloated.

[0038] In one embodiment, if Figure 3 and Figure 4 As shown, the connecting valve 18 is arranged on the outer wall of the housing, and the connecting valve 18 is connected with the compressor exhaust port 15, the compressor air inlet 16 and the second scroll component 12 through a copper tube. The above structure is arranged on the outer wall of the housing, which does not occupy the internal space of the compressor 1, facilitates the arrangement of the internal structure of the compressor 1, and also facilitates the connection of the connecting valve 18 with the compressor exhaust port 15, the compressor air inlet 16, and the second scroll component 12.

[0039] In one embodiment, if Figure 2 As shown, the driving mechanism 14 includes a dual-shaft motor, and an air passage for low-pressure gas circulation is provided in the housing of the dual-shaft motor, and the structure of the dual-shaft motor belongs to the prior art. The suction port 111 of the first scroll component and the suction port 121 of the second scroll component are respectively connected to the compressor air inlet 16 through the air passage of the dual-shaft motor, and the third joint 183 of the connecting valve 18 is also connected to the compressor air inlet 16 through the air passage of the dual-shaft motor. The above-mentioned setting method can replace and reduce the connection structure between the suction port 111 of the first scroll component, the suction port 121 of the second scroll component, and the third joint 183 and the compressor air inlet 16, reduce the number of components of the compressor 1, thereby reducing the cost and reducing the overall volume of the compressor 1.

[0040] In one embodiment, the first scroll component 11 and the second scroll component 12 both include a movable scroll member and a stationary scroll member, the movable scroll member and the stationary scroll member form a meshing connection, and the connection and matching relationship between the movable scroll member and the stationary scroll member is the prior art, that is, the structure of the first scroll component 11 and the structure of the second scroll component 12 are both existing structures.

[0041] In one embodiment, if Figure 3As shown, the compressor 1 also includes a controller 19. The current compressor 1 controller 19 is equipped with a control panel, which can display the main engine current, temperature, pressure, running time and working status of the compressor 1 through a liquid crystal display. The operator can control the compressor 1 through the control panel, set control parameters and display required parameters. The parameters and operating status of the compressor 1 can be intuitively obtained through the controller 19, and the compressor 1 can be controlled according to demand.

[0042] This embodiment also provides a vehicle refrigeration system, including a condenser 2, an evaporator 3 and the compressor 1 as described above, wherein the compressor exhaust port 15 is connected to the suction port of the condenser 2, the discharge port of the condenser 2 is connected to the suction port of the evaporator 3, and the discharge port of the evaporator 3 is connected to the compressor air inlet 16. The compressor exhaust port 15 discharges high-temperature and high-pressure gas, which is converted into medium-temperature and high-pressure liquid through the condenser 2, and then converted into low-temperature and low-pressure gas through the evaporator 3, and finally returns to the compressor air inlet 16 to complete the refrigeration cycle.

[0043] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A compressor, characterized in that: include: Compressor air inlet, for air intake; The compressor exhaust port is used for exhausting air; a first scroll component, wherein a suction port of the first scroll component is communicated with an air inlet of the compressor, and a discharge port of the first scroll component is communicated with an exhaust port of the compressor; a second scroll component, wherein a suction port of the second scroll component is communicated with an air inlet of the compressor, and a discharge port of the second scroll component is communicated with an exhaust port of the compressor; A driving mechanism, used for driving the first scroll component and the second scroll component to operate; as well as The on-off assembly is arranged between the driving mechanism and the second scroll component, and is used to control the on-off between the second scroll component and the driving mechanism, so as to control the operation of the second scroll component.

2. The compressor according to claim 1, characterized in that The compressor also includes a connecting valve, the on-off assembly includes a clutch, the connecting valve is arranged between the clutch and the compressor exhaust port, the connecting valve has at least a first joint and a second joint that are connected to each other, the first joint is connected to the suction port of the second scroll component, the second joint is connected to the compressor exhaust port, and a pressure switch for driving the clutch to be on and off is arranged between the first joint and the clutch.

3. The compressor according to claim 2, characterized in that The connecting valve further comprises a third connector, and the third connector is respectively connected with the first connector, the second connector and the air inlet of the compressor.

4. The compressor according to claim 1, characterized in that The first scroll component and the second scroll component have equal displacement.

5. The compressor according to claim 1, characterized in that The displacements of the first scroll component and the second scroll component are unequal.

6. The compressor according to claim 1, characterized in that The compressor further includes a housing, and the first scroll component and the second scroll component are respectively disposed at two ends of the housing along an axial direction thereof.

7. The compressor according to claim 1, characterized in that The driving mechanism comprises a motor, an air passage is arranged in a housing of the motor, and the suction port of the first scroll component and the suction port of the second scroll component are respectively connected to the compressor air inlet through the air passage of the motor.

8. The compressor according to claim 1, characterized in that The first and second scroll components each include an orbiting scroll member and a non-orbiting scroll member in meshing engagement.

9. A vehicle refrigeration system, characterized in that: Comprising a compressor as claimed in any one of claims 1 to 8.

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