Compressor head, scroll compressor and vehicle

Abstract

The application discloses a compressor top cover, a scroll compressor and a vehicle. The compressor top cover comprises a top cover body, an exhaust pipe, an oil conveying cavity and an oil conveying assembly. The top cover body has a high-pressure cavity and an oil storage cavity. The exhaust pipe is connected to the top cover body, the exhaust pipe is communicated with the high-pressure cavity, and the exhaust pipe is provided with an exhaust port at an end away from the top cover body. The oil conveying cavity is arranged on the top cover body, the exhaust pipe is communicated with the oil conveying cavity through an oil inlet hole, and the oil conveying cavity is communicated with the oil storage cavity through an oil outlet hole. The oil conveying assembly is arranged in the oil conveying cavity. The oil conveying assembly is configured to convey the lubricating oil in the exhaust pipe into the oil storage cavity. Through the above scheme, the application can reduce the probability that the refrigerant carries the lubricating oil out of the compressor again after oil-gas separation, reduce the probability that the lubricating oil blocks the bottom of the oil return pipe, and improve the oil-gas separation efficiency.

Description

Technical Field

[0001] This application relates to the field of compressor technology, and in particular to a compressor top cover, a scroll compressor, and a vehicle. Background Technology

[0002] In recent years, the new energy vehicle industry has developed rapidly, and thermal management technology for new energy vehicles is particularly important. It can provide a comfortable environment for the passenger compartment, provide the optimal temperature range for the battery, and dissipate heat for the electric drive. The scroll compressor is one of the most critical components of the thermal management system of new energy vehicles; the reliability of the scroll compressor is very important for the reliability of the entire thermal management system and the vehicle as a whole; the oil-gas separation capability and oil holding capability inside the compressor are very important for the reliability of the compressor itself.

[0003] The existing compressor top cover has an oil-gas separation structure that is directly connected to the oil storage chamber. After separation, the refrigerant gas will carry some lubricating oil back into the system through the exhaust port, resulting in lower oil separation efficiency. Furthermore, when the liquid level in the oil storage chamber is higher than the bottom of the return oil pipe, the lubricating oil in the return oil pipe will be discharged from the compressor. Summary of the Invention

[0004] This application provides a compressor top cover, a scroll compressor, and a vehicle, which can reduce the probability that the refrigerant will carry the lubricating oil out of the compressor again after oil-gas separation, and reduce the probability that the lubricating oil will block the bottom of the oil return pipe, thereby improving the oil-gas separation efficiency.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution: A compressor top cover is provided, including a top cover body, an exhaust pipe, an oil delivery chamber, and an oil delivery assembly. The top cover body has a spaced-apart high-pressure chamber and an oil storage chamber. The high-pressure chamber is connected to the compressor's stationary plate exhaust port, and the oil storage chamber is connected to the compressor's oil return channel. The exhaust pipe is connected to the top cover body and communicates with the high-pressure chamber. An exhaust port is provided at one end of the exhaust pipe away from the top cover body. The oil delivery chamber is disposed on the top cover body. The exhaust pipe communicates with the oil delivery chamber through an oil inlet, and the oil delivery chamber communicates with the oil storage chamber through an oil outlet. The oil delivery assembly is configured to deliver lubricating oil from the exhaust pipe to the oil storage chamber.

[0006] The high-pressure chamber is connected to the oil delivery chamber through a first vent hole. The oil delivery assembly is configured such that high-pressure gas in the high-pressure chamber enters the oil delivery chamber and drives the oil delivery assembly to deliver lubricating oil in the exhaust pipe to the oil storage chamber.

[0007] The oil delivery assembly includes a driving component and a conveying component. The driving component is fixedly connected to the conveying component, and the driving component is positioned corresponding to the first vent. One of the driving component and the conveying component is a spiral structure. When the driving component is a spiral structure, it is configured to drive at least a portion of the conveying component from the oil inlet to the oil outlet under the drive of the high-pressure gas, thereby delivering the lubricating oil in the exhaust pipe to the oil storage chamber; or, when the conveying component is a spiral structure, the driving component and the conveying component are coaxially fixed, and at least a portion of the conveying component is in contact with the inner wall of the oil delivery chamber.

[0008] The conveying component includes a helical spindle. The helical spindle is rotatably disposed within the oil delivery chamber. The helical spindle includes a main shaft body and conveying blades disposed on the outer surface of the main shaft body and extending helically along the axial direction of the main shaft body. The driving component includes a driving wheel, which is coaxially disposed and connected to the helical spindle. The driving wheel includes multiple driving blades, which are fixed to the outer surface of one end of the main shaft body and are distributed circumferentially along the main shaft body. The rotation direction of the driving wheel is consistent with the helical direction of the conveying blades. This technical solution organically combines the driving wheel and the helical spindle. The helical spindle, by rotating around its axial direction, converts the movement direction of the conveying blades into axial movement, enabling the axial delivery of lubricating oil. This structure is suitable for tubular oil delivery chambers, is compact, and occupies little space. Meanwhile, since the drive wheel can continuously drive the spiral main shaft to rotate continuously, and the conveying blades are spirally wound on the main shaft, the conveying blades can continuously convey lubricating oil upward while the spiral main shaft is rotating continuously. This continuously conveys the lubricating oil at the bottom of the exhaust pipe to the oil storage chamber, making it less likely to remain in the exhaust pipe. This allows the refrigerant to be discharged smoothly while preventing it from carrying lubricating oil out of the compressor again, thereby improving the oil-gas separation efficiency.

[0009] The oil delivery assembly further includes at least one bearing, which is sleeved on the main shaft body and disposed within the oil delivery chamber.

[0010] The oil delivery chamber extends at one end away from the top cover body and forms an opening, and a sealing component is provided in the opening.

[0011] The top cover body also has a low-pressure chamber, which is spaced apart from the high-pressure chamber and the oil storage chamber. The oil delivery chamber is connected to the low-pressure chamber through a second vent hole, and the low-pressure chamber is connected to the exhaust pipe through a third vent hole.

[0012] The exhaust pipe is equipped with an oil return pipe, the third air outlet is located on the side of the oil return pipe facing the exhaust port, and the oil inlet is located on the side of the oil return pipe away from the exhaust port.

[0013] The oil outlet is connected to the side of the oil storage chamber near the exhaust port.

[0014] To solve the above-mentioned technical problems, another technical solution adopted in this application is: to provide a scroll compressor, the scroll compressor including a stationary plate and a compressor top cover as described in any of the technical solutions, the compressor top cover and the stationary plate being detachably connected, the stationary plate being provided with a stationary plate exhaust port and an oil return channel, the high-pressure chamber being connected to the stationary plate exhaust port, and the oil storage chamber being connected to the oil return channel.

[0015] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a vehicle, wherein the vehicle includes the scroll compressor described in any of the technical solutions.

[0016] The beneficial effects of this application are as follows: Unlike existing technologies, the compressor top cover provided in this application is equipped with an oil delivery chamber, which separates the exhaust pipe and the oil storage chamber, i.e., separates the oil-gas separation structure from the oil storage structure. This reduces the probability of the separated refrigerant and lubricating oil mixing again after being discharged from the compressor in the exhaust pipe, thus improving the oil-gas separation efficiency of the top cover. This application also provides an oil delivery component in the oil delivery chamber and uses this component to connect the oil circuit. This arrangement prevents the lubricating oil at the bottom of the exhaust pipe from flowing directly into the oil storage chamber. The lubricating oil separated from the exhaust pipe flows into the oil delivery chamber through the oil inlet and is then transported to the other side of the oil delivery chamber by the oil delivery component, and then flows into the oil storage chamber through the oil outlet. The oil delivery component can transport the lubricating oil separated in the exhaust pipe outwards, preventing it from stagnating in the exhaust pipe. This allows the refrigerant to be discharged smoothly without carrying lubricating oil back out, thereby improving the oil-gas separation efficiency of the scroll compressor. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of an embodiment of the compressor top cover of this application; Figure 2 This is a cross-sectional view of the compressor top cover of this application at one angle; Figure 3 This is a schematic diagram of the structure of an embodiment of the oil delivery assembly of this application; Figure 4 This is a cross-sectional view of the compressor top cover at the drive wheel of this application; Figure 5 This is a schematic diagram of the internal structure of an embodiment of the scroll compressor of this application.

[0018] Reference numerals: 100, scroll compressor; 10, compressor top cover; 11, top cover body; 11a, high-pressure chamber; 11b, oil storage chamber; 11c, oil delivery chamber; 11d, low-pressure chamber; 111, first exhaust port; 112, second exhaust port; 113, third exhaust port; 114, fourth exhaust port; 115, oil inlet; 116, oil outlet; 12, exhaust pipe; 12a, exhaust port; 121, oil return pipe; 13, oil delivery assembly; 131, screw spindle; 1311, main... Shaft; 1312, Conveyor blade; 132, Drive wheel; 1321, Drive blade; 1322, End plate; 133, Bearing; 134, Threaded plug; 135, O-ring; 136, Wave spring; 20, Lower housing; 21, Controller; 22, Main shaft; 23, Stator; 24, Rotor; 25, Auxiliary bearing; 26, Main bearing; 30, Main frame assembly; 31, Drive bearing; 40, Moving disc assembly; 50, Stationary disc assembly; 51, Stationary disc exhaust port; 52, Oil return channel. Detailed Implementation

[0019] To make the objectives, technical solutions, and effects of this application clearer and more explicit, the following detailed description is provided with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] See Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the internal structure of one embodiment of the compressor top cover of this application. Figure 2 This is a cross-sectional view of the compressor top cover of this application from one angle. This application provides a compressor top cover 10, which includes a top cover body 11, an exhaust pipe 12, an oil delivery chamber 11c, and an oil delivery assembly 13.

[0021] The top cover body 11 has a spaced-apart high-pressure chamber 11a and an oil storage chamber 11b. Specifically, the top cover body 11 has a basically circular cover structure. The high-pressure chamber 11a is located at the center of the top cover body 11 and is used to communicate with the static plate exhaust port 51 of the compressor. High-pressure gas in the compressor is discharged into the high-pressure chamber 11a from the static plate exhaust port 51. The oil storage chamber 11b is located at the edge of the top cover body 11 and is basically below the high-pressure chamber 11a. The oil storage chamber 11b is spaced apart from the high-pressure chamber 11a by a partition. The oil storage chamber 11b is used to communicate with the compressor's oil return channel, and the lubricating oil in the oil storage chamber 11b can return to the compressor through the oil return channel.

[0022] An exhaust pipe 12 is connected to the top cover body 11 and communicates with the high-pressure chamber 11a. An exhaust port 12a is provided at the end of the exhaust pipe 12 furthest from the top cover body 11. Specifically, the exhaust pipe 12 extends substantially radially along the top cover body 11, with one end connected to the top cover body 11 and the other end extending outwards from the edge of the top cover body 11 to form the exhaust port 12a. A return oil pipe 121 is inserted into the exhaust pipe 12, located in the middle of the exhaust pipe 12. Figure 2 As can be seen, the middle part of the exhaust pipe 12 is also provided with a fourth exhaust port 114 that connects to the high-pressure chamber 11a. The fourth exhaust port 114 is set towards the outer wall of the oil return pipe 121. When the compressor is running, the refrigerant gas (high-pressure gas) in the compressor carries the lubricating oil into the high-pressure chamber 11a. Most of it enters the exhaust pipe 12 from the high-pressure chamber 11a through the fourth exhaust port 114, and undergoes oil-gas separation under the centrifugal force of the oil return pipe 121. While the refrigerant gas is discharged from the exhaust port 12a, the lubricating oil flows along the side wall of the oil return pipe 121 to the bottom of the exhaust pipe 12 under the action of gravity.

[0023] The oil delivery chamber 11c is located on the top cover body 11. The exhaust pipe 12 is connected to the oil delivery chamber 11c through the oil inlet hole 115. The oil delivery chamber 11c is connected to the oil storage chamber 11b through the oil outlet hole 116. Specifically, the oil delivery chamber 11c is located between the high-pressure chamber 11a and the oil storage chamber 11b to separate the high-pressure chamber 11a and the oil storage chamber 11b.

[0024] The oil delivery assembly 13 is disposed in the oil delivery chamber 11c and is configured to deliver the lubricating oil in the exhaust pipe 12 to the oil storage chamber 11b.

[0025] The compressor top cover 10 provided in this application is provided with an oil delivery chamber 11c, which separates the exhaust pipe 12 and the oil storage chamber 11b, that is, separates the oil-gas separation structure from the oil storage structure. This reduces the probability that the separated refrigerant and separated lubricating oil in the exhaust pipe 12 will mix again and be discharged from the compressor, thus improving the oil-gas separation efficiency of the top cover. This application also provides an oil delivery assembly 13 in the oil delivery chamber 11c, and uses the oil delivery assembly 13 to connect the oil passage. The above arrangement ensures that the lubricating oil at the bottom of the exhaust pipe 12 will not flow directly into the oil storage chamber 11b. Figure 2 The oil path, indicated by the dashed arrow, allows lubricating oil separated from the exhaust pipe 12 to flow into the oil delivery chamber 11c through the oil inlet 115. Driven by the oil delivery assembly 13, the oil is then transported to the other side of the oil delivery chamber 11c and finally flows into the oil storage chamber 11b through the oil outlet 116. The oil delivery assembly 13 effectively delivers the lubricating oil separated from the exhaust pipe 12, preventing it from remaining in the exhaust pipe 12. This ensures that the refrigerant can be discharged smoothly without carrying lubricating oil back into the compressor, thereby improving oil-gas separation efficiency.

[0026] Specifically, the oil delivery assembly 13 can be driven by electricity or pneumatics. In one embodiment, the oil delivery assembly 13 can be driven by a motor to deliver lubricating oil from the exhaust pipe 12 to the oil storage chamber 11b. Under the continuous drive of the motor, the oil delivery assembly 13 can operate continuously, continuously delivering the lubricating oil separated from the exhaust pipe 12 to the outside, so that the lubricating oil is not easily retained in the exhaust pipe 12.

[0027] In another embodiment, the high-pressure chamber 11a is connected to the oil delivery chamber 11c via a first vent 111. The oil delivery assembly 13 is configured such that high-pressure gas from the high-pressure chamber 11a enters the oil delivery chamber 11c to drive the oil delivery assembly 13 to deliver lubricating oil from the exhaust pipe 12 to the oil storage chamber 11b. In this embodiment, the oil delivery assembly 13 can be driven using high-pressure gas from a compressor. Figure 1 As indicated by the arrows in the diagram, when the compressor is running, a pressure difference is generated inside and outside the compressor top cover 10. Specifically, the gas pressure inside the high-pressure chamber 11a is greater than the gas pressure in other locations (such as the oil storage chamber 11b and the oil delivery chamber 11c). This pressure difference drives the high-pressure gas in the high-pressure chamber 11a into the oil delivery chamber 11c, and drives the oil delivery assembly 13 to move. Since the pressure difference always exists when the compressor is running, it continuously drives the oil delivery assembly 13, thereby continuously transporting the lubricating oil separated in the exhaust pipe 12 outwards. This prevents the oil from stagnating in the exhaust pipe 12, allowing the refrigerant to be discharged smoothly without carrying lubricating oil out of the compressor again, thus improving oil-gas separation efficiency. Furthermore, in this embodiment, the oil delivery assembly 13 uses the high-pressure gas in the compressor as a power source, eliminating the need for an additional power source and achieving energy savings. Moreover, this embodiment only requires opening a hole in the compressor top cover 10 to achieve pneumatic drive, making the manufacturing method simple and efficient.

[0028] In some embodiments, the oil delivery assembly 13 includes a drive member and a delivery member, which are fixedly connected. The drive member is disposed corresponding to the first vent 111. When the delivery member has a spiral structure, the drive member and the delivery member are coaxially fixed, and at least a portion of the delivery member is in contact with the inner wall of the oil delivery chamber. The drive member is configured to move at least a portion of the delivery member from the oil inlet 115 to the oil outlet 116 under the drive of high-pressure gas, so as to deliver the lubricating oil in the exhaust pipe 12 to the oil storage chamber 11b. When the compressor operates, the pressure difference drives a portion of the high-pressure gas in the high-pressure chamber 11a to exit through the first outlet 111 to the drive component, thereby causing the drive component to rotate coaxially with the conveyor component. Since the conveyor component has a spiral structure, as it rotates, a portion of its structure moves from the side of the oil delivery chamber 11c near the exhaust pipe 12 to the side near the oil storage chamber 11b, thereby driving the lubricating oil to move in that direction. This allows the lubricating oil entering the oil delivery chamber 11c from the oil inlet 115 to immediately and continuously move towards the oil outlet 116 and flow into the oil storage chamber 11b for storage. In this embodiment, the drive component and the conveyor component are separate components; the drive component drives the conveyor component to move, and the conveyor component achieves oil delivery through movement. In other embodiments, the drive component and the conveyor component can also be an integrated structure, where the pressure difference directly drives the integrated structure to move the lubricating oil. This integrated structure can be a wheel structure with multiple blades; high-pressure gas can exit through the first outlet 111 to one side of the wheel structure, while the other side of the wheel structure can be used to drive the lubricating oil.

[0029] In other embodiments, the drive member is a helical structure, configured to move at least a portion of the conveying member from the oil inlet 115 to the oil outlet 116 under the drive of high-pressure gas, so as to convey the lubricating oil in the exhaust pipe 12 to the oil storage chamber 11b. The drive member and the conveying member can form a reciprocating screw, with the drive member being a screw structure and the conveying member being a slider structure that reciprocates on the drive member. When the compressor is running, the pressure difference drives a portion of the high-pressure gas in the high-pressure chamber 11a to be discharged to the drive member through the first exhaust port 111, thereby causing the drive member to rotate, which in turn drives the conveying member to move from the side of the oil delivery chamber 11c near the exhaust pipe 12 to the side near the oil storage chamber 11b, thereby transporting the lubricating oil in this direction, so that the lubricating oil entering the oil delivery chamber 11c from the oil inlet 115 can move to the oil outlet 116 and flow into the oil storage chamber 11b for storage. In addition, since the drive component and the conveying component form a reciprocating screw, when the drive component is continuously rotating, after the conveying component moves to the end near the oil storage chamber 11b, the conveying component moves in the opposite direction and returns to the side near the exhaust pipe 12 to realize the next oil delivery.

[0030] See Figure 2 and Figure 3 , Figure 3This is a schematic diagram of the structure of an embodiment of the oil conveying assembly of this application. In one embodiment, the conveying component includes a spiral spindle 131, which is rotatably disposed within the oil conveying chamber 11c. The spiral spindle 131 includes a main shaft body 1311 and conveying blades 1312 disposed on the outer surface of the main shaft body 1311 and spirally extending along the axial direction of the main shaft body 1311. The driving component includes a driving wheel 132, which is coaxially disposed and connected to the spiral spindle 131. The driving wheel 132 includes a plurality of driving blades 1321, which are fixed to the outer surface of one end of the main shaft body 1311. The plurality of driving blades 1321 are distributed circumferentially along the main shaft body 1311, wherein the rotation direction of the driving wheel 132 is consistent with the spiral direction of the conveying blades 1312.

[0031] Specifically, such as Figure 2 As shown, in this embodiment, the oil delivery chamber 11c is a tubular oil delivery pipe. One end of the oil delivery pipe is connected to the top cover body 11 and communicates with the exhaust pipe 12, while the other end extends outward from the edge of the top cover body 11 and forms an opening. A spiral spindle 131 is inserted into the oil delivery pipe, with a gap between the spiral spindle 131 and the oil delivery pipe, allowing the spiral spindle 131 to rotate freely around its axis within the oil delivery pipe. Both ends of the spindle body 1311 extend beyond the conveying blades 1312, and a drive wheel 132 is press-fitted onto the end of the spindle body 1311 near the opening. The drive wheel 132 includes two end plates 1322 and multiple drive blades 1321 sandwiched between the two end plates 1322. The end plates 1322 can effectively prevent the airflow in the oil delivery chamber 11c from disturbing the drive blades 1321, while high-pressure gas entering the oil delivery chamber 11c can directly drive the drive blades 1321 to rotate. Since the rotation direction of the drive wheel 132 is consistent with the helical direction of the conveying blade 1312, when the drive wheel 132 rotates in the first direction (e.g., counterclockwise), it drives the helical spindle 131 to rotate synchronously in the first direction. At this time, any point on the conveying blade 1312 can approach the opening along the helical trajectory, so that the conveying blade 1312 can deliver lubricating oil to the oil outlet 116. In this embodiment, the drive wheel 132 and the helical spindle 131 are organically combined. The helical spindle 131 converts the movement direction of the conveying blade 1312 into axial movement by rotating around the axial direction, which can deliver lubricating oil axially. This structure is adapted to the tubular oil delivery chamber 11c. This structure is compact and occupies little space. Meanwhile, since the drive wheel 132 can continuously drive the spiral main shaft 131 to rotate continuously, and the conveying blades 1312 are spirally wound on the main shaft body 1311, the conveying blades 1312 can continuously convey lubricating oil upward while the spiral main shaft 131 is rotating continuously, and continuously convey the lubricating oil at the bottom of the exhaust pipe 12 to the oil storage chamber 11b, which is not easy to remain in the exhaust pipe 12, so that the refrigerant can be discharged smoothly while not easily carrying lubricating oil out of the compressor again, thereby improving the oil-gas separation efficiency.

[0032] In other embodiments, the drive blade 1321 may also be a blade of other shapes or forms. This application does not specifically limit the number and shape of the drive blade 1321.

[0033] It should be noted that the extension direction of the first air outlet 111 should be configured so that the high-pressure airflow can only drive the drive wheel 132 to rotate in one direction, and the rotation direction of the conveying blade 1312 and the rotation direction of the drive wheel 132 in the circumferential direction must be consistent, thereby ensuring that the conveying blade 1312 can only convey lubricating oil towards the oil outlet 116, and not in the opposite direction, thus ensuring the oil delivery effect. For example, as Figure 4 In the cross-sectional view shown, the first vent 111 extends vertically, allowing high-pressure gas to enter the oil delivery chamber 11c vertically downwards, thereby causing the high-pressure gas to push the drive wheel 132 along... Figure 4 The cylinder rotates counterclockwise continuously, while the low-pressure gas is expelled upwards. Figure 4 (The second vent 112 is not fully shown in the image). Furthermore, although both the drive wheel 132 and the screw spindle 131 are located in the oil delivery chamber 11c, the chamber containing the drive wheel 132 and the chamber containing the screw spindle 131 should be kept sealed and isolated to prevent high-pressure gas from entering the chamber containing the screw spindle 131, thereby preventing the oil transported by the screw spindle 131 from being squeezed back into the exhaust pipe 12.

[0034] Furthermore, the oil delivery assembly 13 also includes at least one bearing 133, which is sleeved on the outside of the main shaft 1311 and disposed within the oil delivery chamber 11c. In this embodiment, there are two bearings 133, which are respectively sleeved on both ends of the main shaft 1311, with the bearing 133 near the opening located outside the drive wheel 132. The bearings 133 can reduce the friction between the helical main shaft 131 and the oil delivery chamber 11c. In other embodiments, other numbers of bearings 133 may also be provided.

[0035] Furthermore, a sealing assembly is provided within the opening. Specifically, in this embodiment, the sealing assembly includes a threaded plug 134 and an O-ring 135. The O-ring 135 is fitted over the threaded plug 134, together providing a sealing function for the oil delivery chamber 11c, while the threaded plug 134 also provides axial support for the spiral spindle 131.

[0036] Furthermore, in order to prevent the screw spindle 131 from moving in the axial direction and to ensure stable oil delivery of the screw spindle 131, a wave spring 136 can be set between the threaded plug 134 and the bearing 133 to provide axial preload for the screw spindle 131.

[0037] See Figure 1The top cover body 11 also has a low-pressure chamber 11d, which is spaced apart from the high-pressure chamber 11a and the oil storage chamber 11b. The oil delivery chamber 11c is connected to the low-pressure chamber 11d through a second vent 112, and the low-pressure chamber 11d is connected to the exhaust pipe 12 through a third vent 113. Specifically, in this embodiment, the low-pressure chamber 11d is located at the edge of the top cover body 11, above the high-pressure chamber 11a, and is spaced apart from the high-pressure chamber 11a by a partition. The left end of the low-pressure chamber 11d is spaced apart from the top end of the oil storage chamber 11b and is connected to the oil delivery chamber 11c through the second vent 112, while the right end of the low-pressure chamber 11d is connected to the exhaust pipe 12 through the third vent 113. Because the low-pressure chamber 11d is connected to the exhaust port 12a, the gas pressure in the low-pressure chamber 11d is lower than that in the high-pressure chamber 11a. The low-pressure gas in the oil delivery chamber 11c is discharged into the low-pressure chamber 11d through the second exhaust port 112, and then into the exhaust pipe 12 through the third exhaust port 113. Finally, it is discharged from the compressor together with the refrigerant gas discharged into the exhaust pipe 12 through the fourth exhaust port 114. The gas discharged through the low-pressure chamber 11d will not enter the oil storage chamber 11b, ensuring efficient separation of refrigerant gas and lubricating oil.

[0038] Furthermore, the third vent 113 is located on the side of the return oil pipe 121 facing the exhaust port 12a, so that the gas in the low-pressure chamber 11d does not need to pass through the return oil pipe 121. The oil inlet 115 is located on the side of the return oil pipe 121 away from the exhaust port 12a. Specifically, the oil inlet 115 is located at the bottom end of the exhaust pipe 12 away from the exhaust port 12a, and the oil inlet 115 can also be located at the bottom end of the oil delivery chamber 11c, so that the lubricating oil flowing into the bottom of the oil delivery pipe can quickly flow into the oil delivery chamber 11c.

[0039] Further, see Figure 1 and Figure 2 The oil outlet 116 connects to the side of the oil storage chamber 11b near the exhaust port 12a. Specifically, the oil outlet 116 is located at the top of the oil storage chamber 11b, allowing the separated lubricating oil to flow into the oil storage chamber 11b from the top. This effectively ensures that the lubricating oil separated from the exhaust pipe 12 will not mix with the refrigerant again and be discharged from the compressor, thus effectively improving the oil-gas separation efficiency of the compressor top cover 10. On the other hand, the oil delivery assembly 13 can transport the lubricating oil to the highest point of the oil storage chamber 11b, allowing it to flow into the chamber from the highest point. This ensures that the volume of the oil storage chamber 11b is fully utilized, storing more lubricating oil and improving the lubrication effect of the internal bearing 133 of the compressor, resulting in higher compressor reliability. In other embodiments, the oil outlet 116 can also connect to the upper middle part of the oil storage chamber 11b, avoiding its location at the bottom, to prevent the lubricating oil stored in the oil storage chamber 11b from blocking the oil outlet 116 and preventing the flow of new lubricating oil.

[0040] See Figure 5, Figure 5 This is a schematic diagram of the structure of an embodiment of the scroll compressor of this application. The scroll compressor 100 includes a lower housing 20, a main frame assembly 30, a moving plate assembly 40, a stationary plate assembly 50, etc. The lower housing 20 is provided with a controller 21, a main shaft 22, a stator 23, and a rotor 24. The main shaft 22 is provided with a main bearing 26 and a secondary bearing 25 at both ends, respectively. The main bearing 26 is located in the bearing chamber of the main frame (not shown). The bearing chamber of the main frame is also provided with a drive bearing 31. The scroll compressor 100 also includes a compressor top cover 10 of any of the aforementioned embodiments. The compressor top cover 10 is located on the side of the stationary plate assembly 50 away from the moving plate assembly 40. The compressor top cover 10 and the stationary plate assembly 50 are detachably connected by bolts. The stationary plate assembly 50 is provided with a stationary plate exhaust port 51 and an oil return channel 52. The high-pressure chamber 11a is connected to the stationary plate exhaust port 51, and the oil storage chamber 11b is connected to the oil return channel 52.

[0041] The compressor oil circulation path is as follows Figure 5 As indicated by the arrows, lubricating oil and refrigerant enter the compressor from the compressor suction port (lower housing 20), pass through the airflow channel within the lower housing 20 and the gap between the stator 23 and rotor 24, and then enter the moving plate assembly 40 and stationary plate assembly 50 through the airflow channel within the main frame assembly 30. After being compressed by the moving plate assembly 40 and stationary plate assembly 50, they are discharged from the stationary plate exhaust port 12a into the high-pressure chamber 11a within the compressor top cover 10. Inside the compressor top cover 10, the lubricating oil and refrigerant are separated by a centrifugal oil return pipe 121. The separated lubricating oil is transported to the oil storage chamber 11b through the oil delivery assembly 13 inside the oil delivery chamber 11c. Since the pressure inside the oil storage chamber 11b is greater than the pressure inside the main frame bearing 133 chamber, the oil storage chamber 11b uses the pressure difference to transport the lubricating oil back to the main frame bearing chamber to supply oil to the main bearing and drive bearing 31. When the oil storage structure inside the main frame is full, it will be discharged through the oil outlet (not shown) at the top of the main frame.

[0042] The compressor provided in this application has an oil delivery chamber 11c on the compressor top cover 10. The oil delivery chamber 11c separates the exhaust pipe 12 and the oil storage chamber 11b, that is, it separates the oil-gas separation structure from the oil storage structure. This reduces the probability that the separated refrigerant and the separated lubricating oil in the exhaust pipe 12 will mix again and be discharged from the compressor, thus improving the oil-gas separation efficiency of the top cover. This application also provides an oil delivery assembly 13 in the oil delivery chamber 11c and uses the oil delivery assembly 13 to connect the oil circuit. The above arrangement prevents the lubricating oil at the bottom of the exhaust pipe 12 from flowing directly into the oil storage chamber 11b. Specifically, when the compressor is running, a pressure difference is generated inside and outside the top cover, that is, the gas pressure in the high-pressure chamber 11a is greater than the gas pressure in the oil storage chamber 11b and the oil delivery chamber 11c. This pressure difference drives the high-pressure gas in the high-pressure chamber 11a into the oil delivery chamber 11c and drives the oil delivery assembly 13 to move. The lubricating oil separated from the exhaust pipe 12 flows into the oil delivery chamber 11c through the oil inlet 115 and is then transported to the other side of the oil delivery chamber 11c by the oil delivery assembly 13. It then flows into the oil storage chamber 11b through the oil outlet 116. Because the pressure difference always exists during compressor operation, it continuously drives the oil delivery assembly 13, thus continuously delivering the lubricating oil separated from the exhaust pipe 12. This prevents the oil from stagnating in the exhaust pipe 12, allowing the refrigerant to be discharged smoothly without carrying lubricating oil back out. This improves oil-gas separation efficiency, allowing more lubricating oil to return to the compressor, ensuring adequate lubrication inside the compressor and enhancing the reliability of the scroll compressor 100.

[0043] This application also provides a vehicle including the scroll compressor 100 from the foregoing embodiments. This vehicle can be a pure gasoline vehicle, a hybrid electric vehicle, or a pure electric vehicle, and is applicable to any type of vehicle, such as sedans, SUVs (sports utility vehicles), and MPVs (multi-purpose vehicles).

[0044] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A compressor top cover, characterized in that, include: The top cover body has a spaced high-pressure chamber and an oil storage chamber. The high-pressure chamber is used to communicate with the static plate exhaust port of the compressor, and the oil storage chamber is used to communicate with the oil return channel of the compressor. An exhaust pipe is connected to the top cover body and communicates with the high-pressure chamber. An exhaust port is provided at the end of the exhaust pipe away from the top cover body. An oil delivery chamber is provided on the top cover body. The exhaust pipe is connected to the oil delivery chamber through an oil inlet hole, and the oil delivery chamber is connected to the oil storage chamber through an oil outlet hole. An oil delivery assembly is disposed within the oil delivery chamber and is configured to deliver lubricating oil from the exhaust pipe to the oil storage chamber.

2. The compressor top cover according to claim 1, characterized in that, The high-pressure chamber is connected to the oil delivery chamber through the first vent hole. The oil delivery assembly is configured such that the high-pressure gas in the high-pressure chamber enters the oil delivery chamber and drives the oil delivery assembly to deliver the lubricating oil in the exhaust pipe to the oil storage chamber.

3. The compressor top cover according to claim 2, characterized in that, The oil delivery assembly includes a driving component and a conveying component. The driving component is fixedly connected to the conveying component. The driving component is arranged corresponding to the first air outlet. One of the driving component and the conveying component is a spiral structure. When the driving component is a spiral structure, the driving component is configured to drive at least a portion of the conveying component to move from the oil inlet to the oil outlet under the drive of the high-pressure gas, so as to convey the lubricating oil in the exhaust pipe to the oil storage chamber; or, when the conveying component is a spiral structure, the driving component and the conveying component are coaxially fixed, and at least a portion of the conveying component is in contact with the inner wall of the oil delivery chamber.

4. The compressor top cover according to claim 3, characterized in that, The conveying component includes a spiral spindle rotatably disposed within the oil delivery chamber. The spiral spindle includes a main shaft body and conveying blades disposed on the outer surface of the main shaft body and extending spirally along the axial direction of the main shaft body. The driving component includes a driving wheel coaxially disposed and connected to the spiral spindle. The driving wheel includes multiple driving blades fixed to the outer surface of one end of the main shaft body. The multiple driving blades are distributed circumferentially along the main shaft body, wherein the rotation direction of the driving wheel is consistent with the spiral direction of the conveying blades.

5. The compressor top cover according to claim 4, characterized in that, The oil delivery assembly also includes at least one bearing, which is sleeved on the main shaft body and disposed within the oil delivery chamber.

6. The compressor top cover according to claim 4, characterized in that, One end of the oil delivery chamber extends away from the top cover body and forms an opening, and a sealing component is provided in the opening.

7. The compressor top cover according to any one of claims 1 to 6, characterized in that, The top cover body also has a low-pressure chamber, which is spaced apart from the high-pressure chamber and the oil storage chamber. The oil delivery chamber is connected to the low-pressure chamber through a second vent hole, and the low-pressure chamber is connected to the exhaust pipe through a third vent hole.

8. The compressor top cover according to claim 7, characterized in that, The exhaust pipe is equipped with an oil return pipe. The third air outlet is located on the side of the oil return pipe facing the exhaust port, and the oil inlet is located on the side of the oil return pipe away from the exhaust port.

9. The compressor top cover according to claim 1, characterized in that, The oil outlet is connected to the side of the oil storage chamber near the exhaust port.

10. A scroll compressor, characterized in that, The scroll compressor includes a stationary disc assembly and a compressor top cover as described in any one of claims 1-9. The compressor top cover and the stationary disc assembly are detachably connected. The stationary disc assembly is provided with a stationary disc exhaust port and an oil return channel. The high-pressure chamber is connected to the stationary disc exhaust port, and the oil storage chamber is connected to the oil return channel.

11. A vehicle, characterized in that, Including the scroll compressor as described in claim 10.

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