CN215950133U - Buffer structure, air bearing, compressor and air conditioner - Google Patents

Abstract

The utility model discloses a buffer structure, an air bearing, a compressor and an air conditioner, wherein the buffer structure comprises: the elastic units are distributed at intervals, and each elastic unit is independent; the first end of elastic element is used for being connected with the bearing, and the second end of elastic element is towards the suspension axle, and the second end of elastic element is used for absorbing the kinetic energy of suspension axle, and all elastic elements independently deform and mutually noninterfere. When the suspension shaft vibrates, the elastic units in the bearing area can independently deform to buffer the suspension shaft, the elastic units in the bearing area cannot interfere with the elastic units in the non-bearing area, and the bearing area is prevented from driving the non-bearing area to deform, so that the supporting and vibration damping effects can be better provided, the establishment of a dynamic pressure air film is obviously prolonged, the frictional contact of the suspension shaft is reduced, the high-speed stable operation of the suspension shaft is further promoted, and the bearing capacity and the working performance of the air bearing are improved.

Description

Buffer structure, air bearing, compressor and air conditioner

Technical Field

The utility model relates to the technical field of bearings, in particular to a buffer structure, an air bearing, a compressor and an air conditioner.

Background

The gas bearing is an elastic support bearing which drives gas around a rotor to form a gas film through high-speed rotation, and the gas film is used as a lubricant. Taking an air bearing as an example, friction between the bearing and the shaft can also be completely avoided since the air film located between the rotor and the gas bearing foil provides a good insulation for the rotor and the gas bearing.

The gas bearing structure is generally composed of a top foil, a bump foil and a bearing housing, wherein the top foil and the bump foil are respectively fixed at a foil fixing position of the bearing housing. The bump foil is required to play a role in supporting and damping the top foil, so most of the bump foil is made of materials with good elasticity and high deformation bearing capacity, and most of the bump foil is in a bendable and deformable form, so the bump foil of the air bearing is an elastic supporting structure determining the work of the bearing.

Present bump foil is mostly integral, the foil structure of integral type, however the bump foil limitation of foil structure is big in the in-service use, because the dependent nature of the bearing capacity of the bump foil of foil structure, can let the bump foil of foil structure whole no matter bear the weight of section or non-bear the weight of the section all atress deformation, so the stress sudden change of any point on the bump foil of foil structure all can produce corresponding deformation to the whole, finally produce actual harmful effects to elastic support's effect, more serious condition is because gas bearing works under this kind of unfavorable operating mode for a long time, the long time also can be far less than the design for final bump foil's in-service use.

Therefore, how to solve the problem that the non-bearing section is deformed when the existing foil wave foil bears pressure is an urgent need in the field.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a buffer structure, an air bearing, a compressor and an air conditioner, and solves the problem that a non-bearing section is deformed when the existing foil wave foil bears pressure.

According to an aspect of the present invention, there is disclosed a buffer structure for buffering a collision between a suspension shaft and a bearing, the buffer structure including: the elastic units are distributed at intervals, and each elastic unit is independent; the first end of elastic element is used for being connected with the bearing, and the second end of elastic element is towards the suspension axle, and the second end of elastic element is used for absorbing the kinetic energy of suspension axle, and all elastic elements independently deform and mutually noninterfere.

Further, the elastic unit includes a spring.

Further, the elastic unit is a metal wire with at least one arc segment.

Further, the buffer structure further comprises a base foil, the base foil is used for being connected with the bearing, and the elastic units are connected to the base foil.

Further, the base foil comprises an extrados and an intrados, the elastic unit being located on the intrados of the base foil, the extrados being adapted to be connected to the bearing.

According to another aspect of the present invention, there is disclosed a buffer structure for buffering a collision between a suspension shaft and a bearing, the buffer structure including a connection part for connecting with the bearing; the buffer structure comprises a plurality of buffer parts, the buffer parts face the suspension shaft, and all the buffer parts are independently deformed and do not interfere with each other.

Further, the buffer structure is an integrally formed spring structure, the spring structure comprises two sub-springs, a first end of each sub-spring forms the buffer portion, and second ends of the two sub-springs are connected and form the connecting portion.

Further, the buffer structure is an integrally formed corrugated foil, and the corrugated foil comprises: a first foil body forming a connection portion; the second foil bodies are connected with the first foil bodies and arranged at intervals, and the second foil bodies form a buffer part.

According to another aspect of the present invention, an air bearing is disclosed, comprising the above-described cushioning structure.

Further, the air bearing further comprises: the bearing housing, bearing housing have the through-hole that is used for holding the suspension axle, and buffer structure sets up in the through-hole.

Further, the air bearing further comprises: the top foil is arranged in the through hole, and the buffer structure is located between the top foil and the inner wall of the through hole.

According to another aspect of the utility model, a compressor is disclosed, comprising the air bearing described above.

According to another aspect of the utility model, an air conditioner is disclosed, comprising the air bearing described above.

All the elastic units in the buffer structure independently deform and do not interfere with each other, when the suspension shaft vibrates, the elastic units can collide with the buffer structure, the contact area of the buffer structure and the suspension shaft is a bearing area, the non-contact area of the buffer structure and the suspension shaft is a non-bearing area, the elastic units in the bearing area can independently deform to buffer the suspension shaft, and in the deformation process, the elastic units in the bearing area and the elastic units in the non-bearing area cannot interfere with each other, so that the bearing area is prevented from driving the non-bearing area to deform, the supporting and vibration damping effects can be better provided, the establishment of a dynamic pressure air film is obviously prolonged, the frictional contact of the suspension shaft is reduced, the high-speed stable operation of the suspension shaft is further promoted, and the bearing capacity and the working performance of the air bearing are improved.

Drawings

FIG. 1 is a schematic structural diagram of a buffer structure according to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an elastic unit of the cushioning structure according to the first embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a buffer structure according to a third embodiment of the present invention;

FIG. 4 is a schematic structural view of an air bearing according to a fourth embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a buffering structure according to a fifth embodiment of the present invention;

fig. 6 is a schematic structural view of an air bearing according to a sixth embodiment of the present invention.

Legend: 10. a buffer structure; 11. an elastic unit; 11a, a first end; 11b, a second end; 12. a base foil; 20. a buffer layer; 30. a bearing housing; 31. a through hole; 40. a top foil.

Detailed Description

The present invention is further illustrated by the following examples, but is not limited to the details of the description.

As shown in fig. 1, a first embodiment of the present invention is shown, and discloses an embodiment of a buffer structure, which is used for buffering the collision between a suspension shaft and a bearing, and the buffer structure 10 includes a plurality of elastic units 11, the elastic units 11 are distributed at intervals, wherein the elastic units 11 are distributed at intervals along the circumferential direction of the bearing housing, and simultaneously, the elastic units are distributed at intervals along the axial direction of the bearing housing, and the elastic units can be distributed uniformly or non-uniformly. Each elastic unit 11 is independent; as shown in fig. 2, the first end 11a of the elastic unit 11 is used for connecting with a bearing, the second end 11b of the elastic unit 11 faces the suspension shaft, the second end 11b of the elastic unit 11 is used for absorbing the kinetic energy of the suspension shaft, and all the elastic units 11 are independently deformed and do not interfere with each other.

The elastic unit 11 and the bearing can be connected and fixed by welding, bonding or pin joint.

All the elastic units 11 in the buffer structure are independently deformed and do not interfere with each other, when the suspension shaft vibrates, the buffer structure is collided with the buffer structure, the contact area of the buffer structure and the suspension shaft is a bearing area, the non-contact area of the buffer structure and the suspension shaft is a non-bearing area, the elastic units 11 in the bearing area are independently deformed to buffer the suspension shaft, and in the deformation process, the elastic units 11 in the bearing area and the elastic units 11 in the non-bearing area are not interfered with each other, so that the bearing area is prevented from driving the non-bearing area to deform, the supporting and vibration damping effects can be better provided, the establishment of a dynamic pressure air film is obviously prolonged, the frictional contact of the suspension shaft is reduced, the high-speed stable operation of the suspension shaft is further promoted, and the bearing capacity and the working performance of the air bearing are improved.

It should be noted that, if the specific shape of the elastic unit 11 is different, the position represented by the second end 11b is also different. For example, the elastic unit 11 shown in fig. 2 has an S-shaped structure, and the second end 11b of the elastic unit 11 includes a tip of the elastic unit 11 and a portion near the tip, which is in contact with the levitation shaft when the levitation shaft vibrates, thereby absorbing kinetic energy of the levitation shaft. For example, if the elastic unit 11 is a spring, the two ends of the elastic unit 11 are also the end faces or end connection positions of the whole spring, and do not refer to the tip of the specific structure of the spring. Further, the portions of the first end 11a and the second end 11b of the elastic unit 11 refer to the entire concept of the end of the elastic unit, and do not necessarily refer to a certain end point or a pointed end point. The first end 11a of the elastic unit 11 may be provided as long as the elastic unit 11 is located at a position (including a side surface, an end surface, and an end point structure) where one end can be connected to the bearing. The second end 11b of the elastic member 11 may be provided at a position (including a side surface, an end surface, and an end point structure) where one end of the elastic member 11 can be brought into contact with the floating shaft.

In this embodiment, through setting up a plurality of elastic unit, every elastic unit 11 all can be independently deformed and mutually noninterfere, is equivalent to forming independent little spring, when the suspension axle strikes the elastic unit because of the vibration, can absorb and convert the kinetic energy of suspension axle into elastic potential energy through elastic deformation with the elastic unit 11 that the suspension axle contacted to the realization is to the buffering of suspension axle. Because all the elastic units 11 are independent and do not interfere with each other, therefore, the elastic units 11 do not influence other elastic units 11 in the elastic deformation process, therefore, only the elastic units 11 which are impacted can be ensured to elastically deform, and the elastic units 11 which are not impacted can not elastically deform, thereby better providing the supporting and vibration damping effects, obviously prolonging the establishment of a dynamic pressure air film, reducing the frictional contact of a suspension shaft, further promoting the high-speed stable operation of the suspension shaft, and improving the bearing capacity and the working performance of the air bearing.

Further, the elastic unit 11 may be a spring, a bump foil, or a combination of a spring and a bump foil.

In practical applications, in order to improve the elastic deformation capability of the elastic unit 11, the elastic unit 11 is a metal wire (i.e. a wire-like corrugated foil) having at least one arc segment, and the metal wire having the arc segment has deformation and recovery capabilities, and is preferably made into an S-shaped structure in this embodiment, specifically referring to fig. 2. The shape of the elastic unit 11 may improve its own deformability, thereby better absorbing the kinetic energy of the suspension shaft. Of course, in addition to this, a C-shaped structure or a spiral structure, or other shape structure having arc-shaped sections may be made.

In a second embodiment, not shown in the figures, an embodiment of a buffer structure is disclosed, the buffer structure is used for buffering the collision between the suspension shaft and the bearing, the buffer structure 10 is integrally of a spring structure, the buffer structure 10 comprises a connecting part, and the connecting part is used for connecting with the bearing; the buffer structure 10 includes a plurality of buffer portions facing the suspension shaft, and all the buffer portions are independently deformed and do not interfere with each other. In this embodiment, the buffer structure is an integrated spring structure, and the spring structure includes two sub-springs, and the first end of each sub-spring constitutes the buffer portion, and the second ends of two sub-springs link to each other and constitute connecting portion. The sub-spring is in the shape of a normal spring and will not be described in detail here. The first end of the sub-spring can be restored to deform and can absorb the kinetic energy of the suspension shaft, the structure of the sub-spring can absorb the corresponding kinetic energy, and one sub-spring cannot be transmitted to the other sub-spring after being deformed, so that deformation linkage cannot occur. The spring structure is integrated in the process.

The buffer structure comprises a plurality of buffer parts, all the buffer parts are independently deformed and do not interfere with each other, namely, when the suspension shaft vibrates, the buffer parts can collide with the buffer structure, the contact area of the buffer structure and the suspension shaft is a bearing area, the non-contact area of the buffer structure and the suspension shaft is a non-bearing area, the buffer parts positioned in the bearing area can independently deform to buffer the suspension shaft, and in the deformation process, the buffer parts of the bearing area and the non-bearing area cannot interfere with each other, so that the bearing area is prevented from driving the non-bearing area to deform, the support and vibration reduction effects can be better provided, the establishment of a dynamic pressure air film is remarkably prolonged, the frictional contact of the suspension shaft is reduced, the high-speed stable operation of the suspension shaft is further promoted, and the bearing capacity and the working performance of the air bearing are improved. The cushioning structure 10 is integrally formed as a spring structure rather than a separate elastic unit. This has the advantage that the cushioning structure as a whole is more convenient to install and replace.

As shown in fig. 3, the present invention further discloses a third embodiment, which discloses a buffer structure for buffering the collision between the suspension shaft and the bearing, the buffer structure 10 includes a connecting portion for connecting with the bearing; buffer structure 10 includes a plurality of buffers, and buffer orientation suspension axle, all independent deformation of buffer and mutually noninterfere, buffer structure 10 are integrated into one piece's ripples paper tinsel, and ripples paper tinsel includes integrated into one piece's first foil body 101 and a plurality of second foil body 102, and first foil body 101 forms connecting portion. The second foil body 102 is connected to the first foil body 101, a plurality of the second foil bodies 102 are arranged at intervals, and the second foil bodies 102 form a buffer portion.

In this embodiment, the thickness of the first foil body 101 of the wave foil is larger than that of the second foil body 102, the wave foil is entirely made of a metal material, the first foil body 101 is not deformed or has a small deformation amount due to the thickness, and after one of the second foil bodies 102 is deformed, the first foil body 101 cannot generate linkage deformation transmission, so that all the second foil bodies 102 are of an integral structure which is independently deformed.

The first foil body 101 is connected to the bearing through a curved surface formed by itself (connection forms such as bonding and welding). The second foil body 102 has a small thickness and can deform to absorb the kinetic energy of the floating shaft. The distance between two adjacent second foil bodies 102 may prevent the deformed second foil bodies 102 from interfering with the adjacent second foil bodies 102, which is a process parameter, and all the second foil bodies 102 may not interfere with each other. The entirety of all the second foil bodies 102 may form a wave shape, i.e. form the overall shape of the wave foil, which is also the structure of the wave foil product.

The buffer structure comprises a plurality of buffer parts, all the buffer parts are independently deformed and do not interfere with each other, namely, when the suspension shaft vibrates, the buffer parts can collide with the buffer structure, the contact area of the buffer structure and the suspension shaft is a bearing area, the non-contact area of the buffer structure and the suspension shaft is a non-bearing area, the buffer parts positioned in the bearing area can independently deform to buffer the suspension shaft, and in the deformation process, the buffer parts of the bearing area and the non-bearing area cannot interfere with each other, so that the bearing area is prevented from driving the non-bearing area to deform, the support and vibration reduction effects can be better provided, the establishment of a dynamic pressure air film is remarkably prolonged, the frictional contact of the suspension shaft is reduced, the high-speed stable operation of the suspension shaft is further promoted, and the bearing capacity and the working performance of the air bearing are improved.

As shown in fig. 4, the present invention further discloses a fourth embodiment, which discloses a buffer structure for buffering the collision between the suspension shaft and the bearing, the buffer structure 10 includes a connecting portion for connecting with the bearing; buffer structure 10 includes a plurality of buffers, and buffer orientation suspension axle, all independent deformation of buffer and mutually noninterfere, buffer structure 10 are integrated into one piece's ripples paper tinsel, and ripples paper tinsel includes integrated into one piece's first foil body 101 and a plurality of second foil body 102, and first foil body 101 forms connecting portion. The second foil body 102 is connected to the first foil body 101, a plurality of the second foil bodies 102 are arranged at intervals, and the second foil bodies 102 form a buffer portion.

In the present embodiment, two adjacent second foil bodies 102 are connected by one first foil body 101, the number of the first foil bodies in the present embodiment is multiple, and the multiple first foil bodies 101 are fitted to form a shape matching with the bearing for connecting with the bearing (both connection forms such as bonding and welding). Fig. 4 is a partial structural schematic diagram of the buffer structure 10, which illustrates a structural state after the wave foil is straightened, and in an actual wave foil product, all surfaces of the first foil body 101 corresponding to the bearing will finally form a fitted curved surface.

The thickness of the first foil body 101 of ripples foil is bigger than the second foil body 102, and the whole metallic material that all is of ripples foil, the thickness of the first foil body 101 makes it can not deform or the deformation volume is very little, takes place the deformation back at one of them second foil body 102, and the first foil body 101 can not produce the transmission of linkage deformation, and then realizes that all second foil bodies 102 all are the integral structure of independent deformation.

The second foil body 102 has a small thickness and can deform to absorb the kinetic energy of the floating shaft. The distance between two adjacent second foil bodies 102 may prevent the deformed second foil bodies 102 from interfering with the adjacent second foil bodies 102, which is a process parameter, and all the second foil bodies 102 may not interfere with each other.

The second foil bodies 102 are formed through a stamping process, and the second foil bodies 102 are reduced in thickness after being stamped, but are capable of being deformed due to the reduced thickness. All the first foil bodies 101 and all the second foil bodies 102 are formed integrally into a wave shape, i.e. form the overall shape of a wave foil, which is also the structure of a wave foil product.

As shown in fig. 5, the present invention further discloses a fifth embodiment, in this embodiment, the buffering structure 10 includes a plurality of elastic units 11, the elastic units 11 are distributed at intervals, and each elastic unit 11 is independent; the first end 11a of the elastic unit 11 is used for being connected with the bearing, the second end 11b of the elastic unit 11 faces the suspension shaft, the second end 11b of the elastic unit 11 is used for absorbing the kinetic energy of the suspension shaft, and all the elastic units 11 deform independently and do not interfere with each other. The buffer structure 10 further comprises a base foil 12, the resilient units 11 being distributed over the base foil 12. Further, the base foil 12 is used for being connected with a bearing, the elastic units 11 are connected to the base foil 12, in the specific implementation process, the base foil 12 can be directly abutted to the bearing, in order to make the connection more reliable, a folded edge can be arranged on the edge of the base foil 12, a slot is arranged on the bearing, the folded edge is placed into the slot, then the base foil 12 and the bearing are fixedly connected through a pin, the fixing between the base foil 12 and the bearing is achieved, and the elastic elements 11 can be welded or bonded to the base foil 12. That is, when in use, the elastic unit 11 can be connected to the base foil 12 first, and then connected to the bearing through the base foil 12, because the elastic unit 11 is usually connected to the bearing through welding or bonding, if the bearing is small, the operation is not easy, and by arranging the base foil 12, the base foil 12 can be laid flat, then the elastic unit 11 is welded or bonded to the base foil 12, and then the base foil 12 is installed in the bearing, so that the installation and replacement of the elastic unit 11 can be facilitated.

Preferably, the base foil 12 comprises an extrados and an intrados, the resilient unit 11 being located on the intrados of the base foil 12, the extrados being intended to be connected with a bearing. When the flexible unit is used, the base foil 12 is firstly tiled, then the flexible unit 11 is welded or adhered to the base foil 12, and then the base foil 12 is bent into an arc-shaped structure matched with the bearing, so that the flexible unit 11 can be conveniently installed and replaced.

Preferably, the base foil 12 may also be bent into a cylindrical structure, the base foil 12 forming a levitation space for passing through a levitation axis, the elastic unit 11 being located on an intrados of the base foil 12. In this way, the bearing can be directly arranged in the bearing, and is very convenient.

As shown in fig. 6, according to a sixth embodiment of the present invention, an air bearing is disclosed, which includes the above-described cushion structure.

The air bearing further comprises a bearing housing 30 and a top foil 40, the bearing housing 30 has a through hole 31 for accommodating the suspension shaft, the buffer structure 10 and the top foil 40 are both arranged in the through hole 31, and the buffer structure 10 is located between the top foil 40 and the inner wall of the through hole 31. Through setting up buffer structure 10 between through-hole 31 inner wall and top foil 40, when the suspension axle vibrates, can hit buffer structure on, buffer structure is the bearing area with the regional of suspension axle contact, the region that does not contact with the suspension axle is the non-bearing area, the buffering portion that is located the bearing area can independently deform and cushion the suspension axle, in deformation process, can not mutual interference between the buffering portion in bearing area and the buffering portion in non-bearing area, this prevents that the bearing area from driving the non-bearing area and warp, thereby can provide supporting and damping effect better, show the establishment of extension dynamic pressure gas film, reduce the frictional contact of suspension axle, further promote the high-speed steady operation of suspension axle, air bearing's bearing capacity and working property have been improved.

It should be noted that the top foil 40 is a thin-walled curved part, on which a fixing plate is integrated, which is in engagement with a groove and a fixing pin provided on the bearing housing. The top foil is provided with a top foil curved surface which forms a gas film with the suspension shaft rotating at a high speed. The top foil is heat treated to increase the elastic properties of the material and covered with a coating to increase the surface's resistance to rubbing.

In the present embodiment, the buffering structure 10 includes a plurality of elastic units 11, the elastic units 11 are distributed on the inner wall of the through hole 31 at intervals, and each elastic unit 11 is independent; the first end 11a of the elastic unit 11 is connected with the bearing housing 30, the second end 11b of the elastic unit 11 faces the suspension shaft, the second end 11b of the elastic unit 11 is used for absorbing the kinetic energy of the suspension shaft, and all the elastic units 11 deform independently and do not interfere with each other. Through with a plurality of elastic unit 11 snap-on the through-hole inner wall, can form buffer layer 20 between top foil and through-hole inner wall, thereby realize the buffering to the suspension axle, and because all elastic unit 11 independently deform and mutually noninterfere, therefore, only the region that receives the collision of suspension axle can collapse the deformation on the top foil, and non-bearing area can not collapse the deformation, thereby make top foil can provide supporting and damping effect better, show the establishment of extension dynamic pressure pneumatic film, reduce the frictional contact of suspension axle, further promote the high-speed steady operation of suspension axle, air bearing's bearing capacity and working property have been improved.

In another embodiment not shown, the buffer structure further comprises a base foil 12, the base foil 12 being detachably arranged in the through hole 31; a plurality of elastic cells 11, the elastic cells 11 being distributed over the base foil 12, each elastic cell 11 being independent; the first end 11a of the elastic unit 11 is connected with the base foil 12, the second end 11b of the elastic unit 11 faces the suspension shaft, the second end 11b of the elastic unit 11 is used for absorbing the kinetic energy of the suspension shaft, and all the elastic units 11 deform independently and do not interfere with each other.

Generally, the elastic unit 11 needs to be connected to the inner wall of the through hole 31 by welding or bonding, and it is very difficult to handle because the space inside the through hole 31 is small. By arranging the base foil 12, when the flexible printed circuit board is used, the base foil 12 can be firstly laid flat, then the flexible unit 11 is welded or adhered to the base foil 12, and then the base foil 12 is arranged in the through hole 31, so that the flexible unit 11 can be conveniently installed and replaced.

It should be noted that the base foil 12 may have an arc-shaped structure, and when the arc-shaped structure is adopted, a plurality of base foils 12 may be provided in the through hole 31, and a structure matching the inner wall of the through hole may be formed by the plurality of base foils. Of course, it is also possible to provide the base foil 12 directly in a configuration matching the inner wall of the through hole, which facilitates the mounting. In addition, the base foil may be mounted in the same manner as the top foil by providing a folded edge at the edge of the base foil and a groove in the inner wall of the through hole, and the folded edge may be inserted into the groove and fixed by a pin during mounting.

In a seventh embodiment of the present invention, a compressor is further disclosed, which includes the above air bearing. The compressor comprises a motor shaft, and the air bearing of the embodiment is matched with the motor shaft of the compressor.

In an eighth embodiment of the present invention, an air conditioner is disclosed, which comprises the above air bearing. The outdoor unit and the indoor unit of the air conditioner are provided with rotating shafts, and air bearings are matched with the rotating shafts.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the utility model are covered by the protection scope of the utility model.

Claims (13)

1. A buffer structure for buffering a collision between a suspension shaft and a bearing, characterized in that the buffer structure (10) comprises:

a plurality of elastic units (11), wherein the elastic units (11) are distributed at intervals;

the first end (11a) of elastic element (11) be used for with the bearing is connected, the second end (11b) orientation of elastic element (11) the suspension axle, the second end (11b) of elastic element (11) are used for absorbing the kinetic energy of suspension axle, all elastic element (11) independent deformation and mutually noninterfere.

2. The cushioning structure of claim 1,

the elastic unit (11) includes a spring.

3. The cushioning structure of claim 1,

the elastic unit (11) is a metal wire with at least one arc segment.

4. Cushioning structure according to claim 1, characterized in that the cushioning structure (10) further comprises a base foil (12), the base foil (12) being adapted for connection with the bearing, the resilient units (11) each being connected to the base foil (12).

5. The cushioning structure of claim 4,

the base foil (12) comprises an extrados and an intrados, the elastic unit (11) is located on the intrados of the base foil (12), and the extrados is used for being connected with the bearing.

6. A buffer structure for buffering collision between a suspension shaft and a bearing,

the buffer structure (10) comprises a connecting part which is used for connecting with the bearing;

the buffer structure (10) comprises a plurality of buffer parts, the buffer parts face the suspension shaft, and all the buffer parts are independently deformed and do not interfere with each other.

7. The cushioning structure of claim 6,

the buffer structure (10) is an integrally formed spring structure, the spring structure comprises two sub-springs, the first end of each sub-spring forms the buffer part, and the second ends of the two sub-springs are connected and form the connecting part.

8. The cushioning structure according to claim 6, characterized in that the cushioning structure (10) is an integrally formed wave foil comprising:

a first foil body (101), the first foil body (101) forming the connection;

the buffer part comprises a plurality of second foil bodies (102), wherein the second foil bodies (102) are connected with the first foil body (101), the second foil bodies (102) are arranged at intervals, and the second foil bodies (102) form the buffer part.

9. An air bearing comprising the cushion structure of any one of claims 1 to 8.

10. The air bearing of claim 9, further comprising:

a bearing housing (30), the bearing housing (30) having a through hole (31) for accommodating a suspension shaft, the buffer structure (10) being disposed within the through hole (31).

11. The air bearing of claim 10, further comprising:

a top foil (40), the top foil (40) being arranged within the through hole (31), the cushioning structure (10) being located between the top foil (40) and an inner wall of the through hole (31).

12. A compressor, characterized by comprising an air bearing according to any one of claims 9 to 11.

13. An air conditioner characterised by comprising an air bearing as claimed in any one of claims 9 to 11.

Images