Compressor head and compressor

Abstract

The application provides a compressor top cover and a compressor. The compressor top cover is used for a compressor and comprises a mounting end face facing a static scroll. The mounting end face is provided with a first exhaust cavity, a second exhaust cavity and a flow-through port. The first exhaust cavity and the second exhaust cavity are arranged at intervals. Part of gas can enter the second exhaust cavity which is in communication with the first exhaust cavity, so that a certain buffering and noise reduction effect is achieved. The compressor top cover is further provided with an exhaust passage. The exhaust passage is in communication with the second exhaust cavity and extends through the compressor top cover to form an exhaust port. The gas flows out of the exhaust port after being buffered by the second exhaust cavity. The compressor top cover is further provided with an oil return port which is in communication with the first exhaust cavity and the second exhaust cavity. Along the direction of gravity, the exhaust port, the flow-through port and the oil return port are arranged in sequence. When the gas enters the second exhaust cavity from the first exhaust cavity, the cooling oil can flow from the oil return port to the second exhaust cavity along with the gas flow, so that further collection of the cooling oil is realized.

Description

Technical Field

[0001] This application relates to the field of compressors, and particularly to a compressor top cover and a compressor. Background Technology

[0002] Automotive scroll compressors mainly consist of a controller, motor, motor housing, main shaft, moving and stationary scrolls, and exhaust mechanism. The high-pressure mixture discharged from the stationary scroll enters the exhaust mechanism and is finally discharged from the exhaust port of the exhaust mechanism.

[0003] In existing technologies, scroll compressors produce large exhaust pulses, which exacerbate compressor noise and vibration. At the same time, the unstable gas pressure caused by the exhaust pulses can easily lead to malfunctions of the pressure relief valve, resulting in high-pressure refrigerant leakage, reduced compressor performance, and seriously affecting the customer's user experience. Summary of the Invention

[0004] This application provides a compressor top cover and a compressor, which solves the problem of excessive noise generated by the compressor during normal operation.

[0005] To address the aforementioned technical problems, this application proposes a compressor top cover for use in a compressor. The compressor includes a stationary scroll, and the compressor top cover includes a mounting end face facing the stationary scroll. The mounting end face is provided with a first exhaust chamber, a second exhaust chamber, and a flow port. The first exhaust chamber and the second exhaust chamber are spaced apart from each other, and the flow port connects the first exhaust chamber and the second exhaust chamber. The compressor top cover also provides an exhaust channel that connects to the second exhaust chamber and extends through the compressor top cover to form an exhaust port. The compressor top cover also provides an oil return port that connects the first exhaust chamber and the second exhaust chamber. Along the direction of gravity, the exhaust port, the flow port, and the oil return port are arranged sequentially.

[0006] Specifically, the second exhaust chamber is provided with a plurality of partition blocks, which divide the second exhaust chamber into a plurality of sub-cavities, and the thickness of the partition blocks is less than the depth of the second exhaust chamber.

[0007] Specifically, a separating rib is formed between the first exhaust chamber and the second exhaust chamber, and the flow port is disposed on the separating rib. The second exhaust chamber is disposed around the first exhaust chamber and is separated by the separating rib. Along the cross-sectional direction parallel to the mounting end face, the inner wall of the flow port is inclined to the inner wall of the separating rib or the tangent of the inner wall.

[0008] Specifically, there are two flow ports, and the two flow ports are located on both sides of the return oil port.

[0009] Specifically, the isolation ribs are annular along a cross-sectional direction parallel to the mounting end face. The angle between the centerline of each flow port and the centerline of the return port is less than 90 degrees.

[0010] Specifically, the stationary vortex disk is provided with an air inlet hole, which communicates with the first exhaust chamber. The area of ​​the air inlet hole is less than or equal to the cross-sectional area of ​​the flow port, and the cross-sectional area of ​​the flow port is less than or equal to the area of ​​the exhaust port.

[0011] Specifically, the mounting end face is further provided with an oil return groove, which communicates with the second exhaust chamber. The oil return groove is located on the mounting end face between the flow port and the oil return port.

[0012] Specifically, the first exhaust chamber is provided with reinforcing ribs.

[0013] Specifically, the second exhaust chamber is arranged around the first exhaust chamber, and an annular isolation rib is formed between the first exhaust chamber and the second exhaust chamber. The stationary vortex disk is provided with an air inlet hole, which communicates with the first exhaust chamber. The reinforcing rib connects to the isolation rib and extends toward the air inlet hole.

[0014] Specifically, along the extension direction from the geometric center of the compressor top cover to the side end face, the distances between any two points on the opposite inner walls of the second exhaust chamber, and on the same plane, are not exactly the same.

[0015] Specifically, the compressor top cover also includes a pressure relief channel communicating with the second exhaust chamber, a pressure relief valve is installed in the pressure relief channel, and the pressure relief channel extends through the compressor top cover to communicate with the outside.

[0016] Another technical solution proposed in this application is to provide a compressor, including a compressor top cover as described in any of the above.

[0017] Specifically, it also includes a compressor housing, with the compressor top cover fixed to the compressor housing. A motor is installed inside the compressor housing; a moving scroll is disposed inside the compressor housing and connected to the motor; a stationary scroll is disposed inside the compressor housing, and the stationary scroll and the moving scroll are connected and cooperate with each other, with the end face of the stationary scroll facing away from the moving scroll abutting against and covering the first exhaust chamber, the second exhaust chamber, the flow port, and the oil return port. The stationary scroll also includes a throttling channel that penetrates the end face of the stationary scroll facing the moving scroll, the end face of the moving scroll, and the mounting face. The throttling channel is a trapezoidal channel, wherein the inner diameter of the end of the throttling channel facing the moving scroll is smaller than the inner diameter of the end facing the mounting face.

[0018] The beneficial effects of this application are as follows: Compared with existing compressor top covers, the compressor top cover proposed in this application is used for a compressor, which includes a stationary scroll plate. The compressor top cover includes a mounting end face facing the stationary scroll plate. The mounting end face is provided with a first exhaust chamber, a second exhaust chamber, and a flow port. The first and second exhaust chambers are spaced apart from each other, and the flow port connects the first and second exhaust chambers. This ensures that after the gas enters the compressor top cover, some of the gas can enter the second exhaust chamber connected to the first exhaust chamber, achieving a certain buffering effect. The radial propagation of noise and vibration caused by exhaust pulses can be greatly suppressed, achieving a noise reduction effect. The compressor top cover is also provided with an exhaust channel that connects to the second exhaust chamber and extends through the compressor top cover to form an exhaust port. The gas buffered by the second exhaust chamber flows out from the exhaust port, preventing gas from directly entering the exhaust port from the first exhaust chamber, generating a large airflow pulse, which could cause irreversible damage to the compressor and thus affect its normal operation. The compressor top cover is also provided with an oil return port connecting the first and second exhaust chambers to transfer cooling oil flowing with the gas. Along the direction of gravity, the exhaust port, flow port, and oil return port are arranged in sequence. Since the cooling oil has a certain mass, it is ensured that when the gas enters the second exhaust chamber from the first exhaust chamber, the cooling oil can flow from the oil return port to the second exhaust chamber with the gas flow, thereby achieving further collection of the cooling oil, avoiding waste of cooling oil, and avoiding affecting the heat dissipation effect and working performance of the compressor. Attached Figure Description

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

[0020] Figure 1 This is a schematic diagram of the structure of a compressor top cover provided in this application;

[0021] Figure 2 yes Figure 1 The diagram shows the installation structure of the compressor top cover and the stationary scroll plate. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0024] One aspect of this application provides a compressor top cover, please refer to the following: Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a compressor top cover provided in this application; Figure 2 yes Figure 1The diagram illustrates the installation structure of the compressor top cover and the stationary scroll plate. Specifically, the compressor top cover is used for the compressor, which includes a stationary scroll plate 200. The compressor top cover includes a mounting end face 10 facing the stationary scroll plate 200. The mounting end face 10 is provided with a first exhaust chamber 1, a second exhaust chamber 2, and a flow port 3. The first exhaust chamber 1 and the second exhaust chamber 2 are spaced apart from each other. The flow port 3 connects the first exhaust chamber 1 and the second exhaust chamber 2, ensuring that after the gas enters the compressor top cover, some of the gas can enter the second exhaust chamber 2 connected to the first exhaust chamber 1, achieving a certain buffering effect. The radial propagation of noise and vibration caused by exhaust pulses can be greatly suppressed, achieving a noise reduction effect. The compressor top cover is also provided with an exhaust channel 6, which connects to the second exhaust chamber 2 and extends through the compressor top cover to form an exhaust port 61. The gas buffered by the second exhaust chamber 2 flows out from the exhaust port 61, preventing gas from directly entering the exhaust port 61 from the first exhaust chamber 1, which would generate a large airflow pulse and cause irreversible damage to the compressor, thus affecting the normal operation of the compressor. The compressor top cover is also equipped with an oil return port 5 connecting the first exhaust chamber 1 and the second exhaust chamber 2, used to transfer the cooling oil flowing with the gas. Along the direction of gravity, the exhaust port 61, the flow port 3, and the oil return port 5 are arranged sequentially. Since the cooling oil has a certain mass, it ensures that when gas enters the second exhaust chamber 2 from the first exhaust chamber 1, the cooling oil can flow with the gas flow from the oil return port 5 back into the second exhaust chamber 2, achieving further collection of the cooling oil and avoiding waste that could affect the compressor's heat dissipation and operating performance.

[0025] Understandably, in order to further buffer the gas entering the second exhaust chamber 2, please continue to refer to... Figure 1 In some embodiments, a plurality of partition blocks 21 are provided inside the second exhaust chamber 2, which divide the second exhaust chamber 2 into a plurality of sub-cavities 20. The thickness of the partition blocks 21 is less than the depth of the second exhaust chamber 2. By providing partition blocks 21 inside the second exhaust chamber 2, the strength of the entire second exhaust chamber 2 is enhanced. When gas flows through the second exhaust chamber 2, a certain amount of energy is consumed when the gas passes through the partition blocks 21, which further reduces the vibration generated by the compressor when exhausting and improves the working performance of the compressor.

[0026] In some embodiments, an isolation rib 4 is formed between the first exhaust chamber 1 and the second exhaust chamber 2. The isolation rib 4 is used to separate the first exhaust chamber 1 and the second exhaust chamber 2, preventing some gas from directly entering the exhaust port 61 under the action of power when a large amount of gas enters the first exhaust chamber 1, thus preventing the second exhaust chamber 2 from playing its proper buffering role. A flow port 3 is provided on the isolation rib 4 to connect the first exhaust chamber 1 and the second exhaust chamber 2. The flow port 3 ensures that the gas from the first exhaust chamber 1 enters the second exhaust chamber 2 at a relatively fixed position, reducing the direct impact of gas flowing through the flow port 3 on the cavity wall of the compressor top cover, improving the compressor's noise reduction effect, and extending the compressor's service life. To further ensure the installation of the compressor's internal structure, the second exhaust chamber 2 is arranged around the first exhaust chamber 1 and separated by the isolation rib 4, that is, both the second exhaust chamber 2 and the first exhaust chamber 1 are arranged in a ring shape, which can reduce the size of the compressor to a certain extent, making the compressor suitable for various application scenarios. Along the cross-sectional direction of the parallel mounting end face 10, the inner wall of the flow port 3 is inclined to the inner wall or the tangent of the inner wall of the isolation rib 4. When the gas flows from the first exhaust chamber 1 into the second exhaust chamber 2, it does not directly impact the second exhaust chamber 2 perpendicular to the radial direction. This gives the gas flow a certain buffer when it enters the second exhaust chamber 2, further reducing the impact of the gas on the second exhaust chamber 2 when it flows from the first exhaust chamber 1 to the second exhaust chamber 2. This provides secondary buffering for the gas and enhances the exhaust performance of the compressor.

[0027] In some embodiments, there are two flow ports 3, located on either side of the oil return port 5. This allows the gas inside the first exhaust chamber 1 to flow into the second exhaust chamber 2 through the two flow ports 3. On the one hand, this disperses the amount of gas flowing through a single flow port 3, reducing the impact of the gas flowing out of the flow port 3 on the structure of the second exhaust chamber 2. Furthermore, the gas flowing out of the two flow ports 3 is buffered from different circuits in the second exhaust chamber 2, with the two paths not interfering with each other, enhancing the buffering performance of the second exhaust chamber 2. This ensures that the internal exhaust pressure of the compressor can be consumed, enhancing the overall performance of the compressor. On the other hand, since the cooling oil is transported inside the compressor top cover along with the gas, if the cooling oil adheres to the flow port 3 and causes blockage, the arrangement of two or more flow ports 3 ensures that at least one flow port 3 can connect the first exhaust chamber 1 and the second exhaust chamber 2, preventing the above situation from affecting the normal operation of the compressor.

[0028] Understandably, multiple flow ports 3 can be provided, and in order to ensure that the gas can travel a certain distance in the second exhaust chamber 2 after entering the second exhaust chamber 2, multiple flow ports 3 can be provided at the end away from the exhaust port 61.

[0029] Furthermore, along the cross-sectional direction of the parallel mounting end face 10, the isolation rib 4 is circular, making the isolation rib 4 more compatible with the overall structure of the compressor. In some embodiments, the angle between the centerline of each flow port 3 and the centerline of the oil return port 5 is less than 90 degrees. Specifically, the angle can be 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees, 89 degrees, etc. On the one hand, setting the oil return port 5 at the lower part of the flow port 3 along the direction of gravity allows the cooling oil carrying the gas to flow back to the oil return port 5 under the action of gravity as soon as possible when the gas flows in the compressor, making it easier to recover the cooling oil in the gas. On the other hand, the longer path from the flow port 3 to the exhaust port 61 is more conducive to reducing the wind speed and consuming more pulse kinetic energy in the first exhaust chamber 1 and the second exhaust chamber 2, further enhancing the noise reduction effect of the compressor.

[0030] Specifically, in some embodiments, the center lines of the exhaust port 61 and the oil return port 5 are on the same straight line and coincide with the direction of gravity, which lengthens the path of gas from the flow port 3 to the exhaust port 61, further enhancing the noise reduction effect and working performance of the compressor.

[0031] Please continue to refer to the reference. Figure 1 and Figure 2 In some embodiments, the static vortex disk 200 is provided with an air inlet 201, which is connected to the first exhaust chamber 1. Gas enters the first exhaust chamber through the air inlet 201. In order to ensure that the gas can flow into the second exhaust chamber 2 relatively stably from the first exhaust chamber 1 and be discharged stably from the exhaust port 61, the area of ​​the air inlet 201 is less than or equal to the cross-sectional area of ​​the flow port 3. This makes the gas flow rate entering the compressor top cover less than the maximum gas flow rate that the flow port 3 can flow through. Furthermore, the cross-sectional area of ​​the flow port 3 is less than or equal to the area of ​​the exhaust port 61, making the gas flow rate entering the second exhaust chamber 2 less than the maximum gas flow rate that the exhaust port 61 can flow through. This further ensures the smoothness of the exhaust in the compressor top cover and avoids the backflow phenomenon caused by excessive gas flow in the compressor top cover, which would affect the normal operation of the entire compressor.

[0032] Understandably, when multiple flow ports 3 are provided on the compressor top cover, the area of ​​the air inlet vent 201 is less than or equal to the sum of the cross-sectional areas of all flow ports 3, and the sum of the cross-sectional areas of all flow ports 3 is less than or equal to the area of ​​the exhaust port 61, ensuring that even when multiple flow ports 3 are provided, the gas can still be smoothly discharged through the compressor top cover.

[0033] Understandably, in order to further ensure that the gas can smoothly enter the first exhaust chamber 1, in some embodiments, the projection of the air inlet hole 201 is located in the first exhaust chamber 1 along the cross-sectional direction of the parallel mounting end face 10. The gas transmitted from the other side of the stationary volute 200 can directly enter the first exhaust chamber 1 through the air inlet hole 201, thereby accelerating the exhaust efficiency of the entire compressor and enhancing the performance of the compressor.

[0034] In some embodiments, the mounting end face 10 is further provided with an oil return groove 7, which can serve as a small oil chamber for storing cooling oil. The oil return groove 7 is connected to the second exhaust chamber 2 and is located on the mounting end face 10 between the flow port 3 and the oil return port 5. This allows for the simultaneous collection of cooling oil carried out from the flow port 3 and cooling oil transferred to the second exhaust chamber 2 through the oil return port 5, and the collected cooling oil is then combined and flows into the oil return groove 7.

[0035] Understandably, along the direction of gravity, the oil return groove 7 is located below the flow port 3, and the center line of the flow port 3 and the center line of the oil return groove 7 form a certain angle. That is, the oil return groove 7 is not located directly below the flow port 3, so as to avoid the gas flowing out of the flow port 3 from impacting the cooling oil in the oil return groove 7 when it flows into the second exhaust chamber 2, causing the oil surface to churn, which in turn affects the oil return structure inside the compressor.

[0036] Furthermore, an oil return throttling filter 71 is installed in the oil return trough 7 to control the amount of cooling oil flowing into the compressor. The height of the oil return throttling filter 71 is less than the lowest point of the oil return trough 7. In other words, on the one hand, the cooling oil contained in the oil return trough 7 will completely submerge the oil return throttling filter 71, further controlling the amount of cooling oil flowing into the compressor. On the other hand, if gas flowing out from the flow port 3 passes through the location of the oil return trough 7 on its way to the exhaust port 61, due to the kinetic energy of the gas, it will inevitably impact the cooling oil in the oil return trough 7. However, since the height of the oil return throttling filter 71 is less than the lowest point of the oil return trough 7, the oil surface turbulence caused by the impacted cooling oil will not be lower than the height of the oil return throttling filter 71. This prevents the gas in the compressor from flowing out of the compressor top cover from the oil return throttling filter 71 on its way to the exhaust port 61, which would prevent the gas in the compressor top cover from completely flowing out of the exhaust port 61, resulting in a decrease in compressor performance.

[0037] Furthermore, in some embodiments, the oil return groove 7 is formed by a recess in the inner wall of the second exhaust chamber 2 away from the first exhaust chamber 1. The oil return groove 7 is directly connected to the second exhaust chamber 2 to avoid some of the cooling oil leaking out from the joint between the two when the cooling oil flows from the second exhaust chamber 2 into the oil return groove 7, thereby causing waste of cooling oil and affecting the return flow of cooling oil and cooling efficiency inside the entire compressor.

[0038] In some embodiments, please continue to refer to Figure 1 The first exhaust chamber 1 is provided with a reinforcing rib 11, which strengthens the overall rigidity of the first exhaust chamber 1, reduces the vibration caused by the gas entering from the air inlet 201 impacting the first exhaust chamber 1, and enhances the overall working performance of the compressor.

[0039] Understandably, the reinforcing ribs 11 can be evenly distributed within the first exhaust chamber 1. In some embodiments, to facilitate oil return, no reinforcing ribs 11 are provided in the extension direction of the centerline of the oil return port 5, so as to prevent the cooling oil in the gas from colliding with the reinforcing ribs 11 when dripping down to the oil return port 5 along the direction of gravity, thus preventing the cooling oil from flowing back smoothly to the oil return port 5 and causing waste of cooling oil.

[0040] Furthermore, no reinforcing rib 11 is provided at a certain angle or distance from the centerline of the oil return port 5. Specifically, the angle between the extension line of the reinforcing rib 11 and the centerline of the oil return port 5 is in the range of 10-45 degrees, specifically 10 degrees, 25 degrees, 40 degrees, 45 degrees, etc., to prevent the cooling oil in the gas from colliding with the reinforcing rib 11 when dripping down to the oil return port 5 along the direction of gravity, thus preventing the cooling oil from flowing back smoothly to the oil return port 5 and causing waste of cooling oil.

[0041] Furthermore, when the second exhaust chamber 2 is arranged around the first exhaust chamber 1, and an annular isolation rib 4 is formed between the first exhaust chamber 1 and the second exhaust chamber 2, the reinforcing rib 11 connects to the isolation rib 4 and extends towards the air inlet vent 201, thereby strengthening the rigidity inside the first exhaust chamber 1 and between the first exhaust chamber 1 and the second exhaust chamber 2, reducing the impact and vibration generated by the airflow entering from the air inlet vent 201 on the interior of the chambers. Preferably, on the inner wall of the first exhaust chamber 1 away from the second exhaust chamber 2, along the inner wall of the first exhaust chamber 1 towards the geometric center of the first exhaust chamber 1, the lengths of the reinforcing ribs 11 are not completely equal, allowing for reinforcement of different structural parts according to the actual needs of the compressor's internal structure.

[0042] Understandably, in order to ensure that the gas can achieve a buffering effect in the second exhaust chamber 2, in some embodiments, the distance between any two points on the opposite inner walls of the second exhaust chamber 2, along the extension direction from the geometric center of the compressor top cover to the side end face, is not exactly the same. This means that when the gas flows in the second exhaust chamber 2, on the one hand, the force experienced by each channel and each part of the gas is different, which can greatly consume the impact force of the gas; on the other hand, when the gas flows inside the second exhaust chamber 2, it collides with the second exhaust chamber 2, so that when the gas collides with the inner wall of the second exhaust chamber, the cooling oil can be separated from the gas under the action of the inner wall and flow back to the return oil tank 7 along the channel of the second exhaust chamber 2, thereby improving the return rate of the cooling oil. Specifically, the geometric centers of the second exhaust chamber 2 and the first exhaust chamber 1 do not coincide. For example, when the first exhaust chamber 1 is circular and the second exhaust chamber 2 is annular, the first exhaust chamber 1 and the second exhaust chamber 2 are eccentrically set, so that the width of each segment of the second exhaust chamber 20 is different, which enhances the degree of gas collision and strengthens the noise reduction of the compressor; or the second exhaust chamber 2 is irregularly shaped, that is, the inner wall surface opposite the isolation rib 4 has a protruding section extending into the second exhaust chamber 2, which enhances the degree of gas collision between the gas and its inner wall in the second exhaust chamber 2, further strengthening the noise reduction effect of the compressor.

[0043] In some embodiments, please continue to refer to Figure 1 The compressor top cover also includes a pressure relief channel 8 that communicates with the second exhaust chamber 2. A pressure relief valve 81 is installed in the pressure relief channel 8. The pressure relief channel 8 extends through the compressor top cover and communicates with the outside world, ensuring that the airflow in the second exhaust chamber 2 can also flow stably even under extreme high pressure exhaust conditions.

[0044] Understandably, since the pressure relief channel 8 and the pressure relief valve 81 are located on the side wall of the second exhaust chamber 2, the pressure relief valve 81 can be installed sideways or tilted on the side wall of the second exhaust chamber 2. This avoids the pressure relief valve 81 from being mistakenly activated due to the large exhaust pulse generated by the gas in the second exhaust chamber 2 having a large gas pressure. This further ensures that the pressure relief valve 81 can only open under the correct conditions and play a protective role for the safety pressure.

[0045] Another aspect of this application provides a compressor that also includes a compressor top cover as described above. Therefore, it necessarily possesses all the beneficial effects of the aforementioned compressor top cover, which will not be elaborated further here.

[0046] Furthermore, the compressor also includes a compressor housing (not shown) and a motor (not shown). The compressor top cover is fixed to the compressor housing, and the motor is installed inside the compressor housing. The compressor also includes a moving scroll (not shown) and a stationary scroll 200, which are disposed inside the compressor housing. The stationary scroll 200 and the moving scroll are connected to each other. The moving scroll is connected to the motor. High-pressure gas discharged from the stationary scroll 200, along with the cooling oil carried by the gas, enters the compressor top cover and is finally discharged from the exhaust port 61 of the compressor top cover. The end face of the stationary scroll 200 facing away from the moving scroll abuts against and covers the first exhaust chamber 1, the second exhaust chamber 2, the flow port 3, and the oil return port 5. The stationary scroll 200 also includes a throttling channel (not shown), which runs through the end face of the stationary scroll 200 facing the moving scroll, the end face of the moving scroll, and the mounting end face 10. The throttling channel is a trapezoidal channel, wherein the inner diameter of the end of the throttling channel facing the moving scroll is smaller than the inner diameter of the end facing the mounting end face 10. This ensures that the amount of cooling oil passing through the moving scroll is moderate, so that the cooling oil can fully cool the inside of the compressor and lubricate the vortex between the moving scroll and the stationary scroll 200, thereby improving the working performance of the compressor.

[0047] In the description of this application, the references to terms such as "some embodiments," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least some embodiments or examples of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations 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 patent protection scope of this application.

Claims

1. A compressor top cover for a compressor, the compressor including a stationary scroll, the compressor top cover including a mounting end face facing the stationary scroll; characterized in that, The mounting end face is provided with a first exhaust chamber, a second exhaust chamber and a flow port. The first exhaust chamber and the second exhaust chamber are spaced apart from each other, and the flow port connects the first exhaust chamber and the second exhaust chamber. The compressor top cover is also provided with an exhaust channel, which connects to the second exhaust chamber and extends through the compressor top cover to form an exhaust port; The compressor top cover is also provided with an oil return port that connects the first exhaust chamber and the second exhaust chamber; Along the direction of gravity, the exhaust port, the flow port, and the oil return port are arranged sequentially; Along the extension direction from the geometric center of the compressor top cover to the side end face, the distances between any two points on the opposite inner walls of the second exhaust chamber, and on the same plane, are not exactly the same. The first exhaust chamber is circular, the second exhaust chamber is annular, the second exhaust chamber is formed on the outer periphery of the first exhaust chamber, and the first exhaust chamber and the second exhaust chamber are eccentrically arranged.

2. The compressor top cover according to claim 1, characterized in that, The second exhaust chamber is provided with multiple partition blocks, which divide the second exhaust chamber into multiple sub-cavities. The thickness of the partition blocks is less than the depth of the second exhaust chamber.

3. The compressor top cover according to claim 1, characterized in that, An isolation rib is formed between the first exhaust chamber and the second exhaust chamber, and the flow port is disposed on the isolation rib; The second exhaust chamber is arranged around the first exhaust chamber and is separated by the isolation rib; Along the cross-sectional direction parallel to the mounting end face, the inner wall of the flow port is inclined to the inner wall of the isolation rib or the tangent of the inner wall.

4. The compressor top cover according to claim 3, characterized in that, There are two flow ports, and the two flow ports are located on both sides of the return oil port.

5. The compressor top cover according to claim 4, characterized in that, Along the cross-sectional direction parallel to the mounting end face, the isolation rib is circular; The angle between the centerline of each of the flow ports and the centerline of the return port is less than 90 degrees.

6. The compressor top cover according to claim 1, characterized in that, The static vortex disk is provided with an air inlet hole, which is connected to the first exhaust chamber. The area of ​​the air inlet is less than or equal to the cross-sectional area of ​​the flow outlet, and the cross-sectional area of ​​the flow outlet is less than or equal to the area of ​​the exhaust outlet.

7. The compressor top cover according to claim 1, characterized in that, The mounting end face is also provided with an oil return groove, which is connected to the second exhaust chamber; The oil return groove is located on the mounting end face between the flow port and the oil return port.

8. The compressor top cover according to claim 1, characterized in that, The first exhaust chamber is provided with reinforcing ribs.

9. The compressor top cover according to claim 8, characterized in that, The second exhaust chamber is arranged around the first exhaust chamber, and an annular isolation rib is formed between the first exhaust chamber and the second exhaust chamber; The static vortex disk is provided with an air inlet hole, which is connected to the first exhaust chamber. The reinforcing rib is connected to the isolation rib and extends toward the air inlet hole.

10. The compressor top cover according to any one of claims 1-9, characterized in that, The compressor top cover also includes a pressure relief channel communicating with the second exhaust chamber. A pressure relief valve is installed in the pressure relief channel, and the pressure relief channel extends through the compressor top cover to communicate with the outside.

11. A compressor, characterized in that, The compressor includes a compressor top cover as described in any one of claims 1-10.

12. The compressor according to claim 11, characterized in that, The compressor also includes: The compressor housing, with the compressor top cover fixed to the compressor housing; The motor is installed inside the compressor housing; A moving scroll plate is disposed inside the compressor housing and connected to the motor; A stationary scroll plate is disposed within the compressor housing. The stationary scroll plate and the moving scroll plate are connected and cooperate with each other. The end face of the stationary scroll plate facing away from the moving scroll plate abuts against and covers the mounting end face, including the first exhaust chamber, the second exhaust chamber, the flow port, and the oil return port. The stationary volute also includes a throttling channel that extends through the end face of the stationary volute facing the moving volute, the end face of the moving volute, and the mounting end face. The throttling channel is a trapezoidal channel, wherein the inner diameter of the end of the throttling channel facing the moving scroll is smaller than the inner diameter of the end facing the mounting end face.

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