Scroll compressor and air conditioning system

Abstract

The invention relates to the technical field of vehicle-mounted compressors, in particular to a scroll compressor and an air conditioning system. One end of the main shaft penetrates through the shell to be connected to the vortex plate assembly, the motor assembly is arranged in the shell, the motor assembly is in transmission connection with the other end of the main shaft, the motor assembly can drive the main shaft to rotate, an air suction port is formed in the end, away from the vortex plate assembly, of the shell, the vortex plate assembly is provided with an air inlet, and refrigerants can enter from the air suction port. The first sensor is arranged between the air inlet and the motor assembly, and the first sensor is used for detecting the pressure and the temperature of the refrigerant entering the air inlet. Compared with the prior art, the scroll compressor has the advantages that the first sensor is arranged in the scroll compressor and is positioned between the air inlet and the motor assembly, so that the temperature of a refrigerant entering the scroll plate assembly is reduced under the same temperature measured by the first sensor, the deterioration and failure of lubricating oil are prevented, and the operation reliability of the scroll compressor and a system is improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle compressor technology, and more particularly to a scroll compressor and air conditioning system. Background Technology

[0002] The vehicle-mounted refrigeration cycle system comprises four main components: a compressor, a condenser, an expansion valve, and an evaporator. In existing technologies, such as... Figure 1 As shown, the first sensor 5 is located after the outlet of the evaporator 9 to monitor the state of the low-temperature, low-pressure refrigerant entering the scroll assembly 2. The low-temperature, low-pressure refrigerant enters the interior of the scroll compressor 1 from the compressor suction port a, passes through the suction side 4 and the motor assembly 3, reaches the inlet port b, and is compressed by the scroll assembly 2 into a high-temperature, high-pressure refrigerant. It is discharged from the compressor from the exhaust port c, and its state is monitored by the second sensor 6. Subsequently, the exhaust refrigerant enters the condenser 7 for cooling, and is depressurized through the expansion valve 8 before entering the evaporator 9 to complete a complete refrigeration cycle.

[0003] However, when the intake refrigerant enters the scroll compressor 1, it absorbs the heat released by the heat-generating components such as the motor assembly 3, causing the temperature of the refrigerant at the intake port b to rise. The temperature of the refrigerant entering the scroll assembly 2 also rises, which can easily lead to the deterioration and failure of the lubricating oil, reducing the reliability of the scroll compressor 1. The rise in refrigerant temperature can easily trigger the thermal protection of the scroll compressor 1, causing the scroll compressor 1 to frequently start and stop under protection, reducing the reliability of the system operation.

[0004] Therefore, there is an urgent need for a scroll compressor and air conditioning system to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a scroll compressor and air conditioning system that can prevent lubricating oil from deteriorating and failing, thereby improving the reliability of the scroll compressor and system operation.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A scroll compressor includes: a housing, a motor assembly, a main shaft, a scroll assembly, and a first sensor. One end of the main shaft passes through the housing and is connected to the scroll assembly. The motor assembly is disposed within the housing and is drively connected to the other end of the main shaft, enabling the motor assembly to drive the main shaft to rotate. An air intake is provided at the end of the housing away from the scroll assembly, and an air inlet is provided on the scroll assembly. Refrigerant can enter from the air intake, pass through the motor assembly, and flow into the air inlet. The first sensor is disposed between the air inlet and the motor assembly, and is used to detect the pressure and temperature of the refrigerant entering the air inlet.

[0008] As a preferred embodiment of the aforementioned scroll compressor, the scroll compressor further includes an intermediate body connected between the scroll assembly and the housing. One end of the main shaft passes through the intermediate body and is connected to the scroll assembly. The intermediate body is provided with a through hole, the two ends of which are respectively connected to the suction port and the inlet port. A first sensor is disposed in the intermediate body and is used to detect the pressure and temperature of the refrigerant flowing through the through hole.

[0009] As a preferred embodiment of the aforementioned scroll compressor, the scroll compressor further includes a first bearing, the outer ring of which is fixed to the intermediate body, and the inner ring of which is fixed to the main shaft.

[0010] As a preferred technical solution of the above-mentioned scroll compressor, the intermediate body is provided with a mounting hole, which connects the housing to the outside. The first sensor is disposed in the mounting hole, one end of the first sensor is close to the air inlet and is used to detect the pressure and temperature of the refrigerant at the air inlet, and the other end of the first sensor is provided with a wiring port, which is exposed outside the housing and is used to electrically connect to the drive component.

[0011] As a preferred technical solution of the above-mentioned scroll compressor, the scroll assembly includes a moving disk, a stationary disk, and an eccentric wheel. The moving disk is connected to the intermediate body, the eccentric wheel is sleeved on the outer periphery of the main shaft, the moving disk is sleeved on the outer periphery of the eccentric wheel, and the moving disk and the stationary disk together form a compression chamber, which is connected to the air inlet.

[0012] As a preferred technical solution of the above-mentioned scroll compressor, the scroll compressor further includes an end cover, which is connected to the stationary plate. The end cover and the stationary plate together form an exhaust chamber. The stationary plate is provided with an exhaust port, which is connected to both the exhaust chamber and the compression chamber. The end cover is provided with an exhaust outlet, which is connected to the exhaust chamber.

[0013] As a preferred embodiment of the aforementioned scroll compressor, the scroll compressor further includes a second bearing, the outer ring of which is fixed to the housing, and the inner ring of which is fixed to the other end of the main shaft.

[0014] As a preferred embodiment of the above-mentioned scroll compressor, a mounting groove is provided at the end of the housing away from the scroll assembly, the second bearing is disposed in the mounting groove, and the outer ring of the second bearing is fixed to the groove wall of the mounting groove.

[0015] As a preferred technical solution of the above-mentioned scroll compressor, the motor assembly includes a motor and a rotor, the rotor is disposed between the motor and the main shaft, the motor is drivingly connected to the rotor, and the motor can drive the rotor to rotate the main shaft.

[0016] An air conditioning system includes a condenser, an expansion valve, an evaporator, and a second sensor. The air conditioning system also includes a scroll compressor as described in the preferred embodiment above. The two ends of the scroll compressor are respectively connected to the condenser and the evaporator. The expansion valve is connected between the condenser and the evaporator. The second sensor is disposed between the scroll compressor and the condenser.

[0017] Beneficial effects of this invention:

[0018] This invention provides a scroll compressor and an air conditioning system. The scroll compressor includes: a housing, a motor assembly, a main shaft, a scroll plate assembly, and a first sensor. One end of the main shaft passes through the housing and is connected to the scroll plate assembly. The motor assembly is disposed inside the housing and is drivenly connected to the other end of the main shaft, enabling the motor assembly to drive the main shaft to rotate. An air intake is provided at the end of the housing away from the scroll plate assembly, and an air inlet is provided on the scroll plate assembly. Refrigerant can enter from the air intake, pass through the motor assembly, and flow into the air inlet. The first sensor is disposed between the air inlet and the motor assembly, and is used to detect the pressure and temperature of the refrigerant entering the air inlet. Compared with the prior art, this scroll compressor places the first sensor inside the scroll compressor, located between the air inlet and the motor assembly. This allows the temperature of the refrigerant entering the scroll plate assembly to be lower when the first sensor measures the same temperature, preventing lubricating oil deterioration and failure, and improving the reliability of the scroll compressor and system operation. Simultaneously, the temperature of the refrigerant at the air intake is lower, improving the cooling effect on the motor assembly. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an air conditioning system provided in a prior art embodiment;

[0021] Figure 2 This is a schematic diagram of the air conditioning system provided in the embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the structure of the scroll compressor provided in the embodiments of this application.

[0023] In the picture:

[0024] a. At the air intake; b. At the air inlet; c. At the air outlet;

[0025] 1. Scroll compressor; 2. Scroll assembly; 3. Motor assembly; 4. Suction side; 5. First sensor; 6. Second sensor; 7. Condenser; 8. Expansion valve; 9. Evaporator; 10. Suction port; 11. Second bearing; 12. Main shaft; 13. Rotor; 14. Inlet; 15. Moving disc; 16. Stationary disc; 17. Outlet; 18. End cover; 19. Exhaust port; 20. Eccentric wheel; 21. Intermediate body; 22. Housing; 23. First bearing; 24. Motor; 25. Wiring port. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0027] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0030] like Figure 2 and Figure 3 As shown, the present invention provides a scroll compressor and an air conditioning system. The scroll compressor 1 includes: a housing 22, a motor assembly 3, a main shaft 12, a scroll assembly 2, and a first sensor 5.

[0031] Specifically, one end of the main shaft 12 passes through the housing 22 and is connected to the scroll assembly 2. The motor assembly 3 is disposed inside the housing 22 and is drivenly connected to the other end of the main shaft 12. The motor assembly 3 can drive the main shaft 12 to rotate. An air intake 10 is provided at the end of the housing 22 away from the scroll assembly 2. The scroll assembly 2 is provided with an air inlet 14. Refrigerant can enter from the air intake 10, pass through the motor assembly 3 and flow into the air inlet 14. A first sensor 5 is disposed between the air inlet 14 and the motor assembly 3. The first sensor 5 is used to detect the pressure and temperature of the refrigerant entering the air inlet 14. Compared with the prior art, this scroll compressor 1 places the first sensor 5 inside the scroll compressor 1 and is located between the air inlet 14 and the motor assembly 3. This allows the temperature of the refrigerant entering the scroll assembly 2 to be lower when the first sensor 5 measures the same temperature, preventing the lubricating oil from deteriorating and failing, and improving the reliability of the scroll compressor 1 and the system operation. At the same time, the temperature of the refrigerant at the air intake 10 is lower, improving the cooling effect on the motor assembly 3.

[0032] Optionally, the motor assembly 3 includes a motor 24 and a rotor 13. The rotor 13 is disposed between the motor 24 and the main shaft 12. The motor 24 is driveably connected to the rotor 13, and the motor 24 can drive the rotor 13 to rotate the main shaft 12. Specifically, the rotor 13 is sleeved on the outer periphery of the main shaft 12, and the motor 24 is driveably connected to the outer periphery of the rotor 13, and the motor 24 drives the rotor 13 to rotate.

[0033] Optionally, the scroll compressor 1 further includes an intermediate body 21, which is connected between the scroll assembly 2 and the housing 22. One end of the main shaft 12 passes through the intermediate body 21 and is connected to the scroll assembly 2. The intermediate body 21 is provided with a through hole, and the two ends of the through hole are respectively connected to the suction port 10 and the air inlet 14. A first sensor 5 is disposed in the intermediate body 21 and is used to detect the pressure and temperature of the refrigerant flowing through the through hole. The scroll assembly 2 includes a moving plate 15, a stationary plate 16 and an eccentric wheel 20. The moving plate 15 is connected to the intermediate body 21, and the eccentric wheel 20 is sleeved on the outer periphery of the main shaft 12. The moving plate 15 is sleeved on the outer periphery of the eccentric wheel 20. The moving plate 15 and the stationary plate 16 together form a compression chamber, which is connected to the air inlet 14. Specifically, an eccentric wheel 20 is installed on the side of the main shaft 12 near the scroll plate. The main shaft 12 drives the moving plate 15 to rotate eccentrically through the eccentric wheel 20. The moving plate 15 and the stationary plate 16 form a crescent-shaped compression chamber that gradually shrinks in order to compress the refrigerant.

[0034] In this embodiment, the first sensor 5 is disposed within the intermediate body 21 and is close to the air inlet 14, enabling the suction temperature of the scroll assembly 2 to be completely consistent with the temperature monitored by the first sensor 5. Compared with the prior art, the refrigerant temperature at the suction port 10 of the scroll compressor 1 is lower than that at the suction port 10 in the prior art, which enables better cooling of heat-generating components such as the controller power devices, motor 24, and rotor 13 of the scroll compressor 1. The suction refrigerant temperature is lower and the density is higher, ensuring a more reliable cooling effect. Under harsh operating conditions, the lower suction gas temperature of the scroll compressor 1 can significantly reduce the exhaust temperature, prevent lubricating oil deterioration and failure, and improve the reliability of the scroll compressor 1 and the system operation. It reduces the problem of frequent compressor protection start-stop, improves or alleviates the decline in thermal system control quality and NVH performance, and improves the durability of the scroll compressor 1. At the same time, the superheat of the evaporator 9 outlet is reduced or slightly liquid-laden, which is beneficial for the lubricating oil in the system to return to the scroll compressor 1 through the low-pressure side channel. Of course, in some other embodiments, the first sensor 5 can also be installed in the housing 22, stationary disk 16, etc., and its position is limited to after the motor 24 and rotor 13 and before the air intake 10 of the scroll disk assembly.

[0035] Optionally, the intermediate body 21 is provided with a mounting hole, which connects the housing 22 to the outside. The first sensor 5 is disposed in the mounting hole, with one end of the first sensor 5 close to the air inlet 14 and used to detect the pressure and temperature of the refrigerant at the air inlet 14. The other end of the first sensor 5 is provided with a wiring port 25, which is exposed outside the housing 22 and is used for electrical connection with the drive component. Furthermore, the scroll compressor 1 also includes a seal, which is disposed between the wall of the mounting hole and the first sensor 5 to improve the sealing performance of the scroll compressor 1.

[0036] Optionally, the scroll compressor 1 further includes an end cover 18, which is connected to the stationary plate 16. The end cover 18 and the stationary plate 16 together form an exhaust chamber. The stationary plate 16 is provided with an outlet 17, which is connected to both the exhaust chamber and the compression chamber. The end cover 18 is provided with an exhaust port 19, which is connected to the exhaust chamber. Specifically, during the compression process, the low-temperature, low-pressure refrigerant enters the scroll compressor 1 through the intake port 10. After cooling the motor 24, rotor 13, and controller power components, the refrigerant temperature rises and reaches the intake port 10 on the scroll assembly 2, where it enters the scroll assembly 2 for compression. After being compressed by the scroll assembly 2, the refrigerant enters the exhaust chamber through the outlet 17 and is finally discharged from the scroll compressor 1 through the exhaust port 19.

[0037] Furthermore, the scroll compressor 1 also includes a first bearing 23, the outer ring of which is fixed to the intermediate body 21, and the inner ring of which is fixed to the main shaft 12; the scroll compressor 1 also includes a second bearing 11, the outer ring of which is fixed to the housing 22, and the inner ring of which is fixed to the other end of the main shaft 12. Specifically, the main shaft 12 is supported by the first bearing 23 and the second bearing 11 at both ends, the second bearing 11 is located at the bottom of the housing 22, and the first bearing 23 is fixed inside the intermediate body 21.

[0038] Furthermore, a mounting groove is provided at the end of the housing 22 away from the scroll assembly 2, the second bearing 11 is disposed in the mounting groove, and the outer ring of the second bearing 11 is fixed to the groove wall of the mounting groove, which can improve the stability of the second bearing 11.

[0039] The present invention also provides an air conditioning system, including a condenser 7, an expansion valve 8, an evaporator 9, and a second sensor 6. The air conditioning system also includes a scroll compressor 1 as described in the above embodiment. The two ends of the scroll compressor 1 are respectively connected to the condenser 7 and the evaporator 9. The expansion valve 8 is connected between the condenser 7 and the evaporator 9. The second sensor 6 is disposed between the scroll compressor 1 and the condenser 7. The air conditioning system also includes other essential components that constitute an air conditioning system in the prior art.

[0040] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A scroll compressor, characterized in that, include: The housing (22), motor assembly (3), main shaft (12), scroll assembly (2), and first sensor (5) are provided. One end of the main shaft (12) passes through the housing (22) and is connected to the scroll assembly (2). The motor assembly (3) is disposed inside the housing (22) and is drivenly connected to the other end of the main shaft (12). The motor assembly (3) can drive the main shaft (12) to rotate. An air intake (10) is provided at the end of the housing (22) away from the scroll assembly (2). An air inlet (14) is provided on the scroll assembly (2). The refrigerant can enter from the air intake (10), pass through the motor assembly (3), and flow into the air inlet (14). The first sensor (5) is disposed between the air inlet (14) and the motor assembly (3). The first sensor (5) is used to detect the pressure and temperature of the refrigerant entering the air inlet (14).

2. A scroll compressor according to claim 1, characterized in that, The scroll compressor (1) further includes an intermediate body (21), which is connected between the scroll assembly (2) and the housing (22). One end of the main shaft (12) passes through the intermediate body (21) and is connected to the scroll assembly (2). The intermediate body (21) is provided with a through hole, and the two ends of the through hole are respectively connected to the suction port (10) and the air inlet (14). The first sensor (5) is disposed in the intermediate body (21) and is used to detect the pressure and temperature of the refrigerant flowing through the through hole.

3. A scroll compressor according to claim 2, characterized in that, The scroll compressor (1) further includes a first bearing (23), the outer ring of which is fixed to the intermediate body (21), and the inner ring of which is fixed to the main shaft (12).

4. A scroll compressor according to claim 2, characterized in that, The intermediate body (21) is provided with a mounting hole, which connects the housing (22) to the outside. The first sensor (5) is disposed in the mounting hole. One end of the first sensor (5) is close to the air inlet (14) and is used to detect the pressure and temperature of the refrigerant at the air inlet (14). The other end of the first sensor (5) is provided with a wiring port (25), which is exposed outside the housing (22) and is used to electrically connect to the drive component.

5. A scroll compressor according to claim 2, characterized in that, The scroll assembly (2) includes a moving disk (15), a stationary disk (16), and an eccentric wheel (20). The moving disk (15) is connected to the intermediate body (21). The eccentric wheel (20) is sleeved on the outer periphery of the main shaft (12). The moving disk (15) is sleeved on the outer periphery of the eccentric wheel (20). The moving disk (15) and the stationary disk (16) together form a compression chamber, which is connected to the air inlet (14).

6. A scroll compressor according to claim 5, characterized in that, The scroll compressor (1) further includes an end cover (18), which is connected to the stationary plate (16). The end cover (18) and the stationary plate (16) together form an exhaust chamber. The stationary plate (16) is provided with an air outlet (17), which is connected to both the exhaust chamber and the compression chamber. The end cover (18) is provided with an exhaust port (19), which is connected to the exhaust chamber.

7. A scroll compressor according to claim 1, characterized in that, The scroll compressor (1) also includes a second bearing (11), the outer ring of which is fixed to the housing (22), and the inner ring of which is fixed to the other end of the main shaft (12).

8. A scroll compressor according to claim 7, characterized in that, The housing (22) has a mounting groove at one end away from the scroll assembly (2), the second bearing (11) is disposed in the mounting groove, and the outer ring of the second bearing (11) is fixed to the groove wall of the mounting groove.

9. A scroll compressor according to any one of claims 1-8, characterized in that, The motor assembly (3) includes a motor (24) and a rotor (13). The rotor (13) is disposed between the motor (24) and the main shaft (12). The motor (24) is connected to the rotor (13) in a transmission manner. The motor (24) can drive the rotor (13) to rotate the main shaft (12).

10. An air conditioning system comprising a condenser (7), an expansion valve (8), an evaporator (9), and a second sensor (6), characterized in that, The air conditioning system further includes a scroll compressor (1) as described in any one of claims 1-9, wherein the two ends of the scroll compressor (1) are respectively connected to the condenser (7) and the evaporator (9), the expansion valve (8) is connected between the condenser (7) and the evaporator (9), and the second sensor (6) is disposed between the scroll compressor (1) and the condenser (7).

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