Adjustable air supply bearings and air-suspension compressors

Abstract

This application relates to the field of gas bearing technology and discloses a bearing with adjustable gas supply. The bearing includes a rear bearing disc (1) and a front bearing disc (2). Arc-shaped grooves (11) are distributed on the surface of the rear bearing disc (1); through holes (21) are provided on the surface of the front bearing disc (2). The number of through holes (21) is multiple, and different numbers of through holes (21) correspond to the arc-shaped grooves (11) in different states. At the initial startup of the compressor, a small section of the through hole (21) corresponding to the arc-shaped groove (11) is opened to reduce refrigerant loss. As the bearing speed increases and the demand for support force increases, half of the through holes (21) gradually open, then three-quarters of the through holes (21). When encountering external fluctuations or unstable operation, all through holes (21) are opened to increase stability and achieve the purpose of saving bearing gas supply. This application also discloses an air-suspension compressor.

Description

Technical Field

[0001] This application relates to the field of gas bearing technology, for example to a gas supply adjustable bearing and an air suspension compressor. Background Technology

[0002] Air-suspension compressors, with their high efficiency, energy saving, and oil-free operation, have become one of the mainstream directions in the development of centrifugal compressors. The bearings of air-suspension compressors are a crucial component ensuring their normal operation. Air-suspension compressor bearings are divided into radial bearings and axial bearings. The clearance of axial bearings is 5 to 10 times that of radial bearings, and the air consumption of axial bearings accounts for more than 80% of the total air consumption.

[0003] In the initial stage of compressor operation, the impeller speed is low, the axial force on the rotor shaft is small, and the axial bearing does not function effectively, resulting in a significant waste of its gas supply. Furthermore, the current bearing's gas supply capacity is designed based on the maximum speed multiplied by a safety factor, while centrifugal compressors mostly operate at 50% and 75% of their maximum speed. Therefore, a portion of the gas supply to the axial bearing is also wasted.

[0004] The prior art provides a gas bearing, a compressor, and an air conditioning unit, wherein the gas bearing includes a bearing housing and a throttling element. The bearing housing includes a support surface for supporting rotating parts and has an air supply port. The throttling element is disposed on the side of the bearing housing near the support surface and is made of porous material. The side of the throttling element near the bearing housing has an air inlet groove communicating with the air supply port.

[0005] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0006] Wasted air supply to the bearing. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides an adjustable air supply bearing and an air suspension compressor to solve the problem of wasted air supply to the bearing.

[0009] In some embodiments, the air-adjustable bearing includes a rear bearing disc and a front bearing disc, and further includes: arc-shaped grooves and through holes. The arc-shaped grooves are distributed on the surface of the rear bearing disc; the through holes are disposed on the surface of the front bearing disc, and there are multiple through holes. In different states, different numbers of through holes correspond to the arc-shaped grooves.

[0010] Optionally, the arc-shaped slots are evenly distributed in a first set value layer on the surface of the rear bearing disc.

[0011] Optionally, the through hole includes a small hole. The small hole is disposed on the surface of the front bearing disc, and the small hole is regularly arranged on the surface of the front bearing disc and aligned with the arc-shaped groove.

[0012] Optionally, the through hole includes a via. The via has the same shape and size as the arc-shaped groove, and the via is aligned with the arc-shaped groove.

[0013] Optionally, the rear bearing disc further includes a flow channel and an air inlet. The flow channel is disposed along the outer edge of the rear bearing disc and is interconnected at all points; the air inlet is disposed at intervals on the wall of the flow channel near the center and is connected to the flow channel.

[0014] Optionally, the air intake extends into the rear bearing disc and communicates with the arc-shaped slot.

[0015] Optionally, the number of air inlets is a second set value.

[0016] Optionally, the edge of the front bearing disc is provided with a sealing groove.

[0017] Optionally, an O-ring is provided on the sealing groove.

[0018] In some embodiments, the air suspension compressor includes a motor portion, a pneumatic portion, a housing portion, and a bearing portion, wherein the bearing portion is composed of bearings as provided in the foregoing embodiments.

[0019] The adjustable air supply bearing and air-suspension compressor provided in this disclosure can achieve the following technical effects:

[0020] The bearing includes a rear bearing disc and a front bearing disc. The rear bearing disc has arc-shaped slots distributed across its surface, while the front bearing disc has through holes corresponding to the arc-shaped slots. During the initial compressor startup, a small section of the through hole corresponding to the arc-shaped slot is opened to minimize refrigerant loss while ensuring sufficient support. As the bearing speed increases and the demand for support increases, half of the through holes gradually open. When the bearing speed reaches its maximum, three-quarters of the through holes are opened. In the event of external fluctuations or operational instability, all through holes are opened to increase overall stability. This achieves the goal of conserving refrigerant supply to the bearing.

[0021] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0022] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0023] Figure 1 This is a schematic diagram of a bearing rear bearing disc structure with adjustable air supply provided in an embodiment of this disclosure;

[0024] Figure 2 This is a schematic diagram of another adjustable air supply bearing rear bearing disc structure provided in this embodiment of the present disclosure;

[0025] Figure 3 This is a schematic diagram of the structure of a front bearing disc with adjustable air supply provided in an embodiment of this disclosure;

[0026] Figure 4 This is a schematic diagram of the working state of an adjustable air supply bearing provided in an embodiment of this disclosure;

[0027] Figure 5 This is a schematic diagram of the working state of an adjustable air supply bearing provided in an embodiment of this disclosure;

[0028] Figure 6 This is a schematic diagram of the working state of an adjustable air supply bearing provided in an embodiment of this disclosure;

[0029] Figure 7 This is a schematic diagram of the working state of an adjustable air supply bearing provided in an embodiment of this disclosure;

[0030] Figure 8 This is a schematic diagram of the working state of an adjustable air supply bearing provided in an embodiment of this disclosure.

[0031] Figure label:

[0032] 1: Rear bearing disc; 11: Arc-shaped groove; 12: Flow channel groove; 13: Air inlet; 2: Front bearing disc; 21: Through hole; 22: Sealing groove. Detailed Implementation

[0033] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0034] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0035] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0036] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0037] Unless otherwise stated, the term "multiple" means two or more.

[0038] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0039] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0041] Combination Figures 1 to 7As shown, an adjustable air supply bearing includes a rear bearing disc 1 and a front bearing disc 2, and further includes: arc-shaped grooves 11 and through holes 21. The arc-shaped grooves 11 are distributed on the surface of the rear bearing disc 1; the through holes 21 are disposed on the surface of the front bearing disc 2, and there are multiple through holes 21. In different states, different numbers of through holes 21 are provided corresponding to the arc-shaped grooves 11.

[0042] A bearing is a component that fixes and reduces the coefficient of friction of loads during mechanical transmission. Its main function is to support rotating mechanical parts and reduce the coefficient of friction of mechanical loads during transmission. Based on the different frictional properties of moving elements, bearings can be divided into two main categories: rolling bearings and sliding bearings. Gas bearings are a type of sliding bearing that uses gas as a lubricant. The mechanism of forming a load-bearing gas film in gas-lubricated bearings is the same as that in liquid-lubricated bearings; therefore, they are further divided into gas hydrodynamic bearings and gas hydrostatic bearings. This embodiment uses an application in a hydrostatic axial bearing as an example for illustration.

[0043] The gas bearing provided in this embodiment has an arc-shaped groove 11 on the rear bearing disc 1 and multiple through holes 21 on the front bearing disc 2. The through holes 21 on the front bearing disc 2 are arranged opposite to the arc-shaped groove 11 on the rear bearing disc 1, meaning that every few through holes 21 on the front bearing disc 2 can be fully opened to communicate with the arc-shaped groove 11 on the rear bearing disc 1. The number of through holes 21 is multiple to meet the need for multiple through holes 21 corresponding to the arc-shaped groove 11. Different numbers of through holes 21 are set to correspond to the arc-shaped groove 11 in different states. In the initial stage of compressor startup, due to the low impeller speed and small axial force on the rotor shaft, the axial bearing does not function effectively. Therefore, while ensuring sufficient support force, a small portion of the through holes 21 corresponding to the arc-shaped groove 11 is opened to reduce refrigerant loss. As the bearing speed increases, the axial force requirement of the bearing support push plate increases, and half of the through holes 21 are gradually opened. As the bearing speed reaches its maximum, three-quarters of the through holes 21 are opened. When the compressor encounters external fluctuations or operational instability during operation, all through holes 21 are opened to increase overall stability. By opening the through holes 21 sequentially, the goal of saving air supply to the bearings is achieved.

[0044] Optionally, the rear bearing disc 1 further includes a flow channel groove 12 and an air inlet 13. The flow channel groove 12 is arranged along the outer edge of the rear bearing disc 1, and the flow channel groove 12 is interconnected at all points; the air inlet 13 is spaced apart on the wall of the flow channel groove 12 near the center and is connected to the flow channel groove 12.

[0045] The rear bearing disc 1 also includes a flow channel groove 12 and an air inlet 13. The flow channel groove 12 is a circular groove formed by three walls, located on the outer edge of the rear bearing disc 1. The opening of the flow channel groove 12 faces the side of the rear bearing disc 1, and all parts of the flow channel groove 12 are interconnected, allowing refrigerant to flow and fill the entire outer edge of the rear bearing disc 1. The air inlet 13 is spaced apart on the wall of the flow channel groove 12 near the center of the rear bearing disc 1, and is connected to the flow channel groove 12, allowing refrigerant to flow into the rear bearing disc 1.

[0046] Optionally, the air inlet 13 extends into the rear bearing disc 1 and communicates with the arc-shaped groove 11.

[0047] The rear bearing disc 1 includes an arc-shaped groove 11, a flow channel groove 12, and an air inlet 13. The flow channel groove 12 is connected to the air inlet 13, and the air inlet 13 extends into the rear bearing disc 1 and is connected to the arc-shaped groove 11. Refrigerant flows into the flow channel groove 12 and enters the arc-shaped groove 11 through the air inlet 13.

[0048] In some applications, during the initial startup of the compressor, a flow channel groove 12 is machined on the outer edge. This allows external refrigerant to enter and flow along the groove 12 to various points on the outer edge of the bearing, eventually entering the intake port 13. The intake port 13 connects to the arc-shaped groove 11. Due to the low impeller speed, the axial force on the rotor shaft is very small, and the axial bearing does not function effectively. A small portion of the through-hole 21 corresponding to the arc-shaped groove 11 is opened, allowing some refrigerant to flow into the through-hole 21 through the arc-shaped groove 11. This reduces refrigerant loss while ensuring sufficient support. As the bearing speed increases, the axial force required for the bearing support plate increases, gradually opening half of the through-holes 21, allowing half of the refrigerant to flow into the through-holes 21 through the arc-shaped groove 11. When the bearing speed reaches its maximum, three-quarters of the through-holes 21 corresponding to one arc-shaped groove 11 are opened, allowing three-quarters of the total refrigerant to enter the through-holes 21 through the arc-shaped groove 11. When encountering external fluctuations or unstable operation, all through holes 21 are opened, allowing all refrigerant to enter through holes 21 through the arc-shaped groove 11, increasing overall stability. By controlling the number of through holes 21 opened sequentially, the amount of refrigerant entering through holes 21 is reduced, minimizing unnecessary refrigerant entry and achieving the goal of saving bearing air supply.

[0049] Optionally, the arc-shaped slots 11 are evenly distributed on the surface of the rear bearing disc 1 in the first set value layer.

[0050] Multiple arc-shaped slots 11 can be evenly arranged in one layer on the surface of the rear bearing disc 1, in two layers, in three layers, in four layers, or in various other distribution configurations. The number of layers of arc-shaped slots 11 is related to the airflow rate; the greater the required airflow, the more layers of arc-shaped slots 11 are needed. In this embodiment, the arc-shaped slots 11 are evenly arranged in three layers on the surface of the rear bearing disc 1. When the bearing speed reaches its maximum, opening three-quarters of the through hole 21 corresponding to the three layers of arc-shaped slots 11 provides sufficient support to withstand the axial force of the push plate.

[0051] Optionally, the through hole 21 includes a small hole. The small hole is disposed on the surface of the front bearing disc 2, and the small holes are regularly arranged on the surface of the front bearing disc 2 and aligned with the arc-shaped groove 11.

[0052] A through hole 21 is provided on the front bearing disc 2. The through hole 21 can be a small hole, which is set on the surface of the front bearing disc 2 to connect to the arc-shaped groove 11. The small holes are regularly arranged on the surface of the front bearing disc 2. Here, "regular" means that a certain number of small holes correspond to one arc-shaped groove 11. The "certain number" means that a certain number of small holes are spaced at certain intervals. These small holes plus the intervals between them form a certain shape, which is the same as the shape of the arc-shaped groove 11. The "certain number" is a multiple of 4 because the compressor can be divided into three stages from start-up to full operation. When fluctuations or unstable operation are encountered during operation, a fourth small hole needs to be opened. In these four stages, the amount of refrigerant required in each stage is different.

[0053] In some applications, during the initial startup of the compressor, one-quarter of the number of small holes corresponding to one arc-shaped slot 11 in the through-holes 21 are opened. Refrigerant enters the through-holes 21 through the arc-shaped slot 11, and one-quarter of the total refrigerant volume enters the bearing clearance. This one-quarter refrigerant volume is sufficient to support bearing rotation, preventing refrigerant waste. As the bearing speed increases, the axial force required to support the bearing push plate increases, and half of the number of small holes corresponding to one arc-shaped slot 11 in the through-holes 21 gradually opens. Half of the refrigerant flows into the through-holes 21 through the arc-shaped slot 11. At this point, half of the refrigerant volume is sufficient to support bearing rotation, and it is not necessary to open all the small holes to avoid refrigerant waste. As the bearing speed reaches its maximum, three-quarters of the number of small holes corresponding to one arc-shaped slot 11 in the through-holes 21 are opened, meaning that three-quarters of the total refrigerant volume enters the through-holes 21 through the arc-shaped slot 11. At this point, three-quarters of the refrigerant volume is sufficient to support bearing rotation, and it is not necessary to open all the small holes to avoid refrigerant waste. When encountering external fluctuations or unstable operation, all through holes 21 are opened, allowing all refrigerant to enter through holes 21 through the arc-shaped groove 11, increasing overall stability. By controlling the number of through holes 21 opened sequentially, the amount of refrigerant entering through holes 21 is reduced, minimizing unnecessary refrigerant entry and achieving the goal of saving bearing air supply.

[0054] Optionally, the number of air intakes 13 is a second set value.

[0055] When the through hole 21 is a small hole, the second set value is greater than or equal to the number of arc-shaped slots 11 multiplied by 4, because one arc-shaped slot 11 corresponds to multiple small holes. At this time, the number of multiple small holes corresponding to one arc-shaped slot 11 is a multiple of 4. This is because the compressor start-up is divided into three stages, plus an overall stabilization stage. Each stage has different requirements for refrigerant quantity. Therefore, the small holes are opened four times, each time opening one-quarter of the total number of small holes in the through hole 21.

[0056] Optionally, the through hole 21 includes a via. The via has the same shape and size as the arc-shaped groove 11, and the via is aligned with the arc-shaped groove 11.

[0057] The front bearing disc 2 is provided with a through hole 21, which can be a via. The shape and size of the via are the same as the shape and size of the arc-shaped groove 11, and the via is aligned with the arc-shaped groove 11. That is, the rear bearing disc 1 is provided with an arc-shaped groove 11, and the front bearing disc 2 is also provided with an arc-shaped groove 11. The arc-shaped grooves 11 on the two discs are located in the same position and are connected. The refrigerant can flow from the rear bearing to the front bearing disc 2.

[0058] In some applications, during the initial startup of the compressor, a quarter of the through-holes on the front bearing disc 2, corresponding to an arc-shaped groove 11 on the rear bearing disc 1, are opened. Refrigerant enters the through-hole through the arc-shaped groove 11, with one-quarter of the total refrigerant volume entering the bearing clearance. This one-quarter refrigerant volume is sufficient to support bearing rotation, preventing refrigerant waste. As the bearing speed increases, the axial force required to support the bearing push plate increases, gradually opening half of the through-holes on the front bearing disc 2, corresponding to the arc-shaped groove 11 on the rear bearing disc 1. Half of the refrigerant flows into the through-hole through the arc-shaped groove 11. At this point, half of the refrigerant volume is sufficient to support bearing rotation, eliminating the need to open all through-holes and avoid refrigerant waste. As the bearing reaches its maximum speed, three-quarters of the through-hole on the front bearing disc 2 corresponding to one arc-shaped slot 11 on the rear bearing disc 1 is opened. This allows three-quarters of the total refrigerant to enter the through-hole through the arc-shaped slot 11. At this point, the three-quarters refrigerant is sufficient to support bearing rotation, eliminating the need to open all through-holes and thus avoiding refrigerant waste. In the event of external fluctuations or operational instability, all through-holes on the front bearing discs 2 opposite to one rear bearing disc 1 are opened, allowing all refrigerant to enter the through-holes through the arc-shaped slot 11, increasing overall stability. By sequentially opening the number of through-holes, the amount of refrigerant entering the through-holes is controlled, reducing unnecessary refrigerant entry and achieving the goal of conserving bearing gas supply.

[0059] Optionally, the number of air intakes 13 is a second set value.

[0060] When the through hole 21 is a via, the second setting value is greater than or equal to the number of arc-shaped slots 11, because one arc-shaped slot 11 corresponds to one via.

[0061] Optionally, the mounting bearing is located on the other side of the rear bearing disc 1 for driving the rear bearing disc 1.

[0062] This embodiment uses one arc-shaped groove 11 corresponding to four through holes 21 as an example. A front bearing disc 2 is located on one side of the rear bearing disc 1, and an assembly bearing is located on the other side of the rear bearing disc 1. When the compressor starts, the drive rotates the assembly bearing, which in turn rotates the rear bearing disc 1 until it reaches a through hole 21 on the front bearing disc 2 that corresponds to one arc-shaped groove 11. Refrigerant flows in through this through hole 21, preventing refrigerant waste during the initial startup phase of the compressor. As the bearing speed increases, the drive rotates the assembly bearing, which in turn rotates the rear bearing disc 1 until it reaches two through holes 21 on the front bearing disc 2 that correspond to one arc-shaped groove 11. Refrigerant flows in through these two through holes 21, preventing refrigerant waste during the second phase of compressor startup. As the bearing speed increases, the compressor reaches its maximum speed, driving the assembly bearing to rotate. The assembly bearing then drives the rear bearing disc 1 to rotate until it reaches the arc-shaped groove 11 and the three through holes 21 on the front bearing disc 2 corresponding to one arc-shaped groove 11. Refrigerant flows in through these three through holes 21, preventing refrigerant waste when the compressor reaches its maximum speed. When encountering external fluctuations or unstable operation, all the through holes 21 on the front bearing disc 2 corresponding to one arc-shaped groove 11 open, allowing refrigerant to flow in through these four through holes 21. By sequentially opening the number of through holes 21, the amount of refrigerant entering the through holes 21 is controlled, reducing unnecessary refrigerant entry and achieving the goal of saving bearing gas supply.

[0063] Optionally, a sealing groove 22 is provided on the edge of the front bearing disc 2. This is used to prevent refrigerant from flowing out of the front bearing disc 2 and to avoid refrigerant waste.

[0064] Optionally, an O-ring is provided on the sealing groove 22. The O-ring is provided along the edge of the front bearing disc (2) and fits perfectly into the sealing groove (22).

[0065] In some embodiments, the air suspension compressor includes a motor portion, a pneumatic portion, a housing portion, and a bearing portion, wherein the bearing portion is composed of bearings as provided in the foregoing embodiments.

[0066] The air-suspension compressor provided in this embodiment includes a motor section, a pneumatic section, a housing section, and a bearing section. The motor section includes a stator core, coils, and a rotor shaft. The pneumatic section includes an impeller, volute, booster, and guide vanes. The bearing section includes axial bearings, thrust plates, and radial bearings. The impeller and other components are mounted on the main shaft to form a rotor, which is supported by bearings. During the initial startup of the compressor, only one bearing through-hole 21 is open to ensure sufficient support and reduce refrigerant loss. As the rotational speed increases, the demand for support increases, and the second and third through-holes 21 are gradually opened. At the highest speed, opening all three through-holes 21 is sufficient to meet the support requirements. In the event of external fluctuations or operational instability, the fourth through-hole 21 is opened to increase overall stability. When the impeller rotates at high speed, due to the interaction of forces between the blades and the refrigerant, primarily centrifugal force, the refrigerant is drawn in from the center of the impeller and flows along the blade passages (the channels between the blades) to the outer edge of the impeller. The impeller performs work on the refrigerant, giving it energy and increasing its pressure and velocity. Then, the refrigerant flows through channels such as the turbocharger, where its velocity decreases and its pressure further increases, meaning kinetic energy is converted into pressure energy. The refrigerant flowing out of the turbocharger enters the volute and is then transported out. Throughout the compression process, the specific volume of the refrigerant decreases, and its temperature increases. With the temperature increasing, compressing the refrigerant requires more energy. To save power, multi-stage centrifugal compressors often employ intercooling when the pressure ratio is greater than 3. The refrigerant enters the intercooler from the previous stage, where its temperature is lowered before entering the next stage for further compression. The intercooler is typically water-cooled.

[0067] Figure 8 This is a schematic diagram of the working state of an adjustable air supply bearing provided in an embodiment of this disclosure, combined with... Figure 8 As shown, during the initial startup of the compressor, refrigerant flows in through the flow groove 12 of the rear bearing disc 1 and into the arc-shaped groove 11 through the air inlet 13 on the rear bearing disc. At this time, one of the through holes 21 on the front bearing disc 2, corresponding to the arc-shaped groove 11 on the rear bearing disc 1, is opened, allowing refrigerant to flow in and reducing refrigerant loss while ensuring sufficient support force. As the bearing speed increases, the demand for support force increases, and the two through holes 21 on the front bearing disc 2 are gradually opened, allowing refrigerant to flow into the impeller through the two through holes 21. When the bearing speed reaches its maximum, opening all three through holes 21 on the front bearing disc 2 is sufficient to meet the support force requirement. In the event of external fluctuations or unstable operation, all through holes 21 are opened to increase overall stability. By gradually opening the number of through holes 21, the amount of refrigerant entering the through holes 21 is controlled, reducing unnecessary refrigerant entry into the through holes and achieving the goal of saving bearing gas supply.

[0068] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A bearing with adjustable air supply, comprising a rear bearing disc (1) and a front bearing disc (2), characterized in that, Also includes: Arc-shaped slots (11) are distributed on the surface of the rear bearing disc (1); Through holes (21) are provided on the surface of the front bearing disc (2). There are multiple through holes (21). In different states, different numbers of through holes (21) are provided corresponding to the arc-shaped groove (11) so as to control the amount of refrigerant entering the through holes (21) by opening the through holes (21) one by one, thereby achieving the purpose of saving bearing air supply. The arc-shaped groove (11) is evenly distributed in a first set value layer on the surface of the rear bearing disc (1). The through hole (21) includes a small hole, which is disposed on the surface of the front bearing disc (2). The small holes are regularly arranged on the surface of the front bearing disc (2) and aligned with the arc-shaped groove (11).

2. The bearing according to claim 1, characterized in that, The through hole (21) includes: The via is the same shape and size as the arc-shaped groove (11), and the via is aligned with the arc-shaped groove (11).

3. The bearing according to claim 1, characterized in that, The rear bearing disc (1) also includes: A flow channel (12) is provided along the outer edge of the rear bearing disc (1), and the flow channel (12) is interconnected in all places; Air inlets (13) are spaced apart on the wall of the flow channel (12) near the center and are connected to the flow channel (12).

4. The bearing according to claim 3, characterized in that, The air inlet (13) extends into the rear bearing disc (1) and is connected to the arc-shaped groove (11).

5. The bearing according to claim 3, characterized in that, The number of air inlets (13) is a second set value.

6. The bearing according to claim 1, characterized in that, The edge of the front bearing disc (2) is provided with a sealing groove (22).

7. The bearing according to claim 6, characterized in that, An O-ring is provided on the sealing groove (22).

8. An air-suspension compressor, characterized in that, It includes a motor part, a pneumatic part, a housing part, and a bearing part, wherein the bearing part is composed of a bearing as described in any one of claims 1 to 7.

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