CN219452684U - Air bearing and compressor - Google Patents
Air bearing and compressor Download PDFInfo
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- CN219452684U CN219452684U CN202320215701.1U CN202320215701U CN219452684U CN 219452684 U CN219452684 U CN 219452684U CN 202320215701 U CN202320215701 U CN 202320215701U CN 219452684 U CN219452684 U CN 219452684U
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Abstract
The utility model provides an air bearing and a compressor, wherein the air bearing comprises: the shaft sleeve is provided with a shaft hole, the supporting foil and the top foil are connected with the shaft sleeve, at least one part of the supporting foil and at least one part of the top foil are positioned in the shaft hole, the supporting foil is positioned between the shaft sleeve and the top foil, and the supporting foil is used for supporting the top foil. The elastic support member is connected with the shaft sleeve, and at least one part of the elastic support member protrudes out of the inner ring of the shaft sleeve and is in contact with the support foil for supporting the support foil.
Description
Technical Field
The utility model belongs to the technical field of air bearing, and particularly relates to an air bearing and a compressor.
Background
In an air bearing, the air bearing generally comprises a shaft sleeve, a top foil and a supporting foil, wherein the top foil and the supporting foil are fixed in the shaft sleeve, and the supporting foil is used for supporting the top foil.
At present, the air bearing is generally applied to high-speed light-load rotating equipment, and for some heavy-load occasions, the top foil and the support foil are easy to collapse, so that the equipment is abnormal in operation, and therefore, how to improve the applicability of the air bearing becomes a problem to be solved.
Disclosure of Invention
The present utility model aims to solve one of the technical problems existing in the prior art or related technologies.
In view of this, in a first aspect, the present utility model proposes an air bearing comprising: a shaft sleeve having a shaft hole; the support foil is connected with the shaft sleeve, and at least one part of the support foil is positioned in the shaft hole; the top foil is connected with the shaft sleeve, at least one part of the top foil is positioned in the shaft hole, the supporting foil is positioned between the shaft sleeve and the top foil, and the supporting foil is used for supporting the top foil; and the elastic support piece is connected with the shaft sleeve, and at least one part of the elastic support piece protrudes out of the inner ring of the shaft sleeve and is in contact with the support foil for supporting the support foil.
According to the air bearing provided by the utility model, the shaft sleeve is of a hollow structure, the shaft sleeve is provided with the shaft hole, the foil assembly and the rotating shaft are arranged in the shaft hole, the supporting foil is fixed on the shaft sleeve, and the supporting foil can support the top foil. The supporting foil has elastic deformation capability, and under the condition that the rotating shaft is arranged in the shaft hole, the supporting foil provides elastic support for the top foil, so that stable matching of the top foil and the rotating shaft can be ensured.
Install elastic support piece on the axle sleeve, elastic support piece is located between the inner circle of support foil and axle sleeve, and elastic support piece can provide holding power to support foil for support foil is difficult for taking place plastic deformation under the exogenic action, to some heavy load occasions, top foil and support foil are difficult for taking place to collapse, guarantee equipment stability is unusual, improves air bearing's suitability. Moreover, by adding the elastic support, the bearing capacity of the support foil is improved. Moreover, the supporting foil is supported by the elastic supporting piece, so that the supporting foil can stably support the top foil, and the air bearing has higher damping and rigidity, thereby being beneficial to improving the performance of the air bearing.
The elastic support piece has elasticity, so that the elastic support piece is prevented from being rigidly contacted with the support foil, and damage to the support foil caused by the elastic support piece can be avoided.
In addition, the air bearing in the technical scheme provided by the utility model can also have the following additional technical characteristics:
in the above technical scheme, the air bearing further comprises: the mounting groove is formed in the inner ring of the shaft sleeve, and a part of the elastic supporting piece is located in the mounting groove.
In this technical scheme, processing shaping has the mounting groove on the inner circle of axle sleeve, and the partly installation of elastic support spare is in the mounting groove, and the mounting groove can play the effect of location to elastic support spare, needs under the condition of installing elastic support spare to the axle sleeve, only needs to peg graft elastic support spare to the mounting groove in just accomplish the location to elastic support spare, and elastic support spare can accurately support the position of waiting to support of foil, does not need other auxiliary positioning modes just can realize the location to elastic support spare, is favorable to improving the installation convenience to elastic support spare.
The mounting groove can also play a limiting role on the elastic support piece, and a part of the elastic support piece is positioned in the mounting groove, so that the elastic support piece is not easy to shake relative to the shaft sleeve, and the mounting stability of the elastic support piece is improved.
In any of the above solutions, the elastic support member is in interference fit with the mounting groove.
In this technical scheme, elastic support piece pegging graft and is fixed in the mounting groove, and specifically, elastic support piece is interference fit with the cooperation mode of mounting groove, and elastic support piece can insert tightly in the mounting groove, need not just can be fixed in the mounting groove with the help of other locking parts with elastic support piece. The elastic support piece and the mounting groove are assembled in an interference fit mode, so that the stability of the elastic support piece and the mounting groove can be guaranteed, and the elastic support piece can stably support the support foil.
In other technical schemes, magnetic structures can be arranged in the elastic supporting piece and the mounting groove, and the elastic supporting piece and the mounting groove are fixed in a magnetic attraction mode.
In any of the above embodiments, the supporting foil includes a plurality of sub-foils, the plurality of sub-foils are distributed along a circumferential direction of the sleeve, the number of the elastic supporting members is greater than or equal to the number of the sub-foils, and one sub-foil is supported by at least one elastic supporting member.
In the technical scheme, along the circumference of the shaft sleeve, a plurality of sub-foils are arranged on the shaft sleeve, and an annular structure surrounded by a plurality of annular parts is used as a supporting foil. When the supporting foil is assembled, a plurality of sub-foils can be assembled on the shaft sleeve respectively, and at least one elastic supporting piece is arranged between each sub-foil and the shaft sleeve, so that one sub-foil is supported by the at least one elastic supporting piece, and the bearing capacity of the supporting foil can be improved by increasing the number of the elastic supporting pieces.
In one possible application, the number of elastic supports may be set according to the load, and although the greater the number of elastic supports, the greater the carrying capacity of the support foil, the greater the number of elastic supports used, the greater the manufacturing cost, and thus the number of elastic supports used may be increased or decreased according to the load.
In any of the above technical solutions, the air bearing further includes: the slots are arranged on the inner ring of the shaft sleeve, the number of the slots is multiple, and the slots are arranged at intervals along the inner ring of the shaft sleeve; the support foil further comprises: the first bending parts are arranged at the two ends of the sub-foil along the circumferential direction of the shaft sleeve, and the first bending parts at the two ends of the sub-foil are respectively inserted into the adjacent two slots.
In this technical solution, the first bending portions are provided at two ends of the sub-foil, and the first bending portions have a bending angle compared with the sub-foil, and in one possible application, the first bending portions may be formed after bending a portion of the supporting foil, or the first bending portions may be welded at the ends of the sub-foil by welding.
The inner ring of the shaft sleeve is provided with the slots in a machining mode, and the two first bending parts on one supporting foil are respectively inserted into the two adjacent slots, so that the supporting foil can be fixed on the shaft sleeve, the mounting mode of the supporting foil is simple and convenient, and the assembly efficiency of the supporting foil is improved.
The support foil is fixed on the shaft sleeve in a plugging manner, so that the support foil can be detached from the shaft sleeve, and the first bending part can be pulled out of the slot under the condition that the support foil is damaged or deformed, so that the support foil is maintained or replaced without replacing the whole air bearing, and the maintenance cost and the use cost of the air bearing can be reduced.
In one possible application, one first bend on one support foil shares one slot with one first bend on an adjacent support foil, i.e. two first bends are inserted into one slot.
In any of the above technical solutions, the air bearing further includes: the second bending part is arranged at the end part of the top foil and is inserted into the slot.
In this technical solution, a second bending portion is provided at the end of the top foil, which has a bending angle compared to the top foil, and in one possible application, the second bending portion may be formed after bending a portion of the top foil, or may be welded at the end of the top foil by means of welding.
After the top foil is rolled and formed, the second bending part is inserted into the slot, so that the top foil can be fixed on the shaft sleeve, the mounting mode of the top foil is simple and convenient, and the assembly efficiency of the top foil is improved.
The top foil is fixed on the shaft sleeve in a plugging manner, so that the top foil can be detached from the shaft sleeve, and the second bending part can be pulled out of the slot under the condition that the top foil is damaged or deformed, so that the top foil is maintained or replaced, and the maintenance cost and the use cost of the air bearing are reduced.
The first bending part and the second bending part share one slot, so that the processing difficulty of the shaft sleeve can be reduced.
In any of the above solutions, the slot includes: the first slot is used for being inserted into the first bending part and the second bending part, and the second slot is used for being inserted into the first bending part.
In this technical scheme, the quantity of support foil is a plurality of, consequently sets up the quantity of second slot to a plurality of, can peg graft two first kinks on the support foil in adjacent second slot, and it should be noted that, in a plurality of support foil, two first kinks on one of them support foil, one peg graft in the first slot, another peg graft in the second slot.
The first slot is used for being inserted into the first bending part and the second bending part, and only the first bending part is needed to be inserted into the second slot, so that the width of the first slot is required to be larger than that of the second slot, and the assembly requirements of the first bending part and the second bending part are met.
The width of the second slot is smaller, so that the first bending part can be tightly inserted into the second slot, and the first bending part is prevented from being separated from the first slot.
In one possible application, the number of first slots is a plurality, and the number of second slots is 1.
In any of the above solutions, the elastic support comprises at least one of the following: metal rubber, rubber parts and silica gel parts.
In any of the above technical solutions, the thickness H of the support foil is 0.1mm or more and 0.5mm or less.
In the technical scheme, when the thickness of the supporting foil is smaller than 0.1mm, the supporting foil is too small in thickness and is easy to deform, so that the carrying capacity of the supporting foil is weaker. When the thickness of the supporting foil is larger than 0.5mm, the curling forming effect of the supporting foil is poor, and the supporting foil is not easy to deform due to the large thickness, so that the self-adaption of the air bearing is poor. Therefore, the thickness of the supporting foil is limited between 0.1mm and 0.5mm, so that the bearing capacity of the supporting foil can be ensured, the curling effect of the supporting foil can be improved, and the self-adaption capacity of the air bearing can be improved.
In any of the above embodiments, the support foil comprises: stainless steel sub-foils and/or nickel-based alloy sub-foils.
In the technical scheme, the supporting foil can be made of stainless steel materials or nickel-based alloy materials, the stainless steel materials and the nickel-based alloy materials are not easy to rust, and the supporting foil can be ensured to have longer service life. Moreover, the hardness of the stainless steel material or the nickel-based alloy material is high, so that the supporting foil is not easy to damage, and the top foil can be stably supported.
In any of the above technical solutions, the air bearing further includes: and the coating is arranged on the inner ring of the top foil.
In the technical scheme, the coating can be a wear-resistant coating, the wear-resistant coating has self-lubricating performance, and the coating can reduce friction between the rotating shaft and the inner ring of the top foil, so that the service life of the air bearing can be prolonged.
In a second aspect, the present utility model proposes a compressor comprising: the air bearing in the technical scheme is as above.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 shows a schematic structural view of an air bearing in an embodiment of the utility model;
FIG. 2 shows an exploded view of an air bearing in an embodiment of the utility model;
FIG. 3 shows a schematic structural view of a bushing in an embodiment of the utility model;
FIG. 4 shows a schematic structural view of a neutron foil according to an embodiment of the utility model;
FIG. 5 shows a schematic structural view of a top foil in an embodiment of the utility model;
fig. 6 shows a schematic structural view of a metal rubber in an embodiment of the present utility model.
Reference numerals:
100 sleeves, 110 shaft holes, 120 mounting grooves, 130 slots, 131 first slots, 132 second slots, 200 support foils, 210 sub foils, 220 first bending parts, 300 top foils, 310 second bending parts, 400 elastic support pieces.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.
An air bearing and a compressor provided according to some embodiments of the present utility model are described below with reference to fig. 1 to 6.
As shown in fig. 1 and 2, in some embodiments of the present utility model, an air bearing is provided, including: the sleeve 100 has a shaft hole 110, the support foil 200 and the top foil 300 are connected with the sleeve 100, and at least a portion of the support foil 200 and at least a portion of the top foil 300 are positioned in the shaft hole 110, the support foil 200 is positioned between the sleeve 100 and the top foil 300, and the support foil 200 is used for supporting the top foil 300. The elastic support 400 is connected to the hub 100, at least a portion of the elastic support 400 protrudes from the inner circumference of the hub 100, and the elastic support 400 is in contact with the support foil 200 for supporting the support foil 200.
The air bearing provided in this embodiment, the shaft sleeve 100 is of a hollow structure, the shaft sleeve 100 is provided with a shaft hole 110, the shaft hole 110 is internally provided with a foil assembly and a rotating shaft, the supporting foil 200 is fixed on the shaft sleeve 100, and the supporting foil 200 can support the top foil 300. The supporting foil 200 has an elastic deformation capability, and in the case of the shaft hole 110 having the shaft inserted therein, the supporting foil 200 provides an elastic support for the top foil 300, so that a stable fit of the top foil 300 with the shaft can be ensured.
The elastic support 400 is arranged on the shaft sleeve 100, the elastic support 400 is positioned between the support foil 200 and the inner ring of the shaft sleeve 100, and the elastic support 400 can provide supporting force for the support foil 200, so that the support foil 200 is not easy to generate plastic deformation under the action of external force, collapse of the top foil 300 and the support foil 200 is not easy to occur in heavy-load occasions, equipment stability abnormality is guaranteed, and the applicability of the air bearing is improved. Moreover, by adding the elastic support 400, the load carrying capacity of the support foil 200 is advantageously increased. Moreover, the supporting foil 200 is supported by the elastic supporting piece 400, so that the supporting foil 200 can stably support the top foil 300, and the air bearing has higher damping and rigidity, thereby being beneficial to improving the performance of the air bearing.
Since the elastic support 400 has elasticity, rigid contact of the elastic support 400 and the support foil 200 is avoided, and damage of the elastic support 400 to the support foil 200 can be avoided.
As shown in connection with fig. 1, 2 and 3, in the above embodiment, the air bearing further includes: and a mounting groove 120, wherein the mounting groove 120 is provided at an inner circumference of the sleeve 100, and a portion of the elastic support 400 is positioned in the mounting groove 120.
In this embodiment, the mounting groove 120 is formed on the inner ring of the sleeve 100, a part of the elastic support 400 is mounted in the mounting groove 120, the mounting groove 120 can play a role in positioning the elastic support 400, and the elastic support 400 is positioned only by plugging the elastic support 400 into the mounting groove 120 under the condition that the elastic support 400 needs to be mounted on the sleeve 100, so that the elastic support 400 can accurately support the position to be supported of the support foil 200, positioning of the elastic support 400 can be achieved without other auxiliary positioning modes, and convenience in mounting the elastic support 400 is improved.
The mounting groove 120 can also play a limiting role on the elastic support 400, and a part of the elastic support 400 is located in the mounting groove 120, so that the elastic support 400 is not easy to shake relative to the shaft sleeve 100, and the mounting stability of the elastic support 400 is improved.
In any of the above embodiments, the resilient support 400 is an interference fit with the mounting slot 120.
In this embodiment, the elastic support 400 is inserted and fixed in the mounting groove 120, specifically, the elastic support 400 is in interference fit with the mounting groove 120, and the elastic support 400 can be inserted and fastened in the mounting groove 120, so that the elastic support 400 can be fixed in the mounting groove 120 without using other locking components. The elastic support 400 and the mounting groove 120 are assembled in an interference fit manner, so that the stability of the fit of the elastic support 400 and the mounting groove 120 can be ensured, and the elastic support 400 can stably support the support foil 200.
In other embodiments, magnetic structures may be disposed in the elastic support 400 and the mounting groove 120, and the elastic support 400 and the mounting groove 120 may be fixed by magnetic attraction.
Alternatively, the elastic support 400 may be welded to the inner ring of the sleeve 100 by welding.
As shown in fig. 1 and 2, in any of the above embodiments, the support foil 200 includes a plurality of sub-foils 210, the plurality of sub-foils 210 are distributed along the circumferential direction of the sleeve 100, the number of the elastic supports 400 is greater than or equal to the number of sub-foils 210, and one sub-foil 210 is supported by at least one elastic support 400.
In this embodiment, a plurality of sub-foils 210 are provided on the sleeve 100 along the circumferential direction of the sleeve 100, and an annular structure surrounded by a plurality of annular portions is the support foil 200. In assembling the support foil 200, a plurality of sub-foils 210 may be assembled to the sleeve 100, respectively, and at least one elastic support 400 is provided between each sub-foil 210 and the sleeve 100, so that one sub-foil 210 is supported by at least one elastic support 400, and the load-bearing capacity of the support foil 200 may be improved by increasing the number of elastic supports 400.
In one possible application, the number of elastic supports 400 may be set according to the load, and although the greater the number of elastic supports 400, the greater the load carrying capacity of the support foil 200, the greater the number of elastic supports 400 used, the greater the manufacturing cost, and thus the number of elastic supports 400 used may be increased or decreased according to the load.
As shown in connection with fig. 1, 3 and 4, in any of the above embodiments, the air bearing further includes: the slots 130 are arranged on the inner ring of the shaft sleeve 100, the number of the slots 130 is multiple, and the slots 130 are arranged at intervals along the inner ring of the shaft sleeve 100. The support foil 200 further comprises: the first bending parts 220 are arranged at two ends of the sub-foil 210 along the circumferential direction of the shaft sleeve 100, and the first bending parts 220 at two ends of the sub-foil 210 are respectively inserted into the adjacent two slots 130.
In this embodiment, the first bending parts 220 are provided at both ends of the sub-foil 210, and the first bending parts 220 have a bending angle compared to the sub-foil 210, and in one possible application, the first bending parts 220 may be formed after bending a portion of the support foil 200, or the first bending parts 220 may be welded at the ends of the sub-foil 210 by welding.
The slot 130 is formed on the inner ring of the shaft sleeve 100, and the two first bending parts 220 on one supporting foil 200 are respectively inserted into the two adjacent slots 130, so that the supporting foil 200 can be fixed on the shaft sleeve 100, the mounting mode of the supporting foil 200 is simple and convenient, and the assembly efficiency of the supporting foil 200 is improved.
The supporting foil 200 is fixed on the shaft sleeve 100 in a plugging manner, so that the supporting foil 200 can be detached from the shaft sleeve 100, and the first bending part 220 can be pulled out of the slot 130 under the condition that the supporting foil 200 is damaged or deformed, so that the supporting foil 200 is maintained or replaced without replacing the whole air bearing, and the maintenance cost and the use cost of the air bearing can be reduced.
In one possible application, one first bend 220 on one support foil 200 shares one slot 130 with one first bend 220 on an adjacent support foil 200, i.e. two first bends 220 are inserted into one slot 130.
As shown in connection with fig. 1, 3 and 5, in any of the above embodiments, the air bearing further includes: the second bending part 310, the second bending part 310 is arranged at the end of the top foil 300, and the second bending part 310 is inserted into the slot 130.
In this embodiment, the second bending part 310 is provided at the end of the top foil 300, and the second bending part 310 has a bending angle compared to the top foil 300, and in one possible application, the second bending part 310 may be formed after bending a part of the top foil 300, or the second bending part 310 may be welded at the end of the top foil 300 by welding.
After the top foil 300 is rolled and formed, the second bending part 310 is inserted into the slot 130, so that the top foil 300 can be fixed on the shaft sleeve 100, the mounting mode of the top foil 300 is simple and convenient, and the assembly efficiency of the top foil 300 is improved.
The top foil 300 is fixed on the shaft sleeve 100 in a plugging manner, so that the top foil 300 can be detached from the shaft sleeve 100, and the second bending part 310 can be pulled out of the slot 130 under the condition that the top foil 300 is damaged or deformed, so that the top foil 300 is maintained or replaced, and the maintenance cost and the use cost of the air bearing are reduced.
The first bending portion 220 and the second bending portion 310 share one slot 130, so that the processing difficulty of the shaft sleeve 100 can be reduced.
As shown in connection with fig. 1, 3, 4 and 5, in any of the above embodiments, the slot 130 includes: the first slot 131 and the plurality of second slots 132, the width of the first slot 131 is greater than the width of any second slot 132, the first slot 131 is used for inserting the first bending part 220 and the second bending part 310, and the second slot 132 is used for inserting the first bending part 220.
In this embodiment, the number of the supporting foils 200 is plural, so the number of the second slots 132 is plural, and two first bending portions 220 on the supporting foils 200 can be inserted into adjacent second slots 132, and it should be noted that, among the plural supporting foils 200, one of the two first bending portions 220 on the supporting foils 200 is inserted into the first slot 131, and the other is inserted into the second slot 132.
The first slot 131 is used for plugging the first bending part 220 and the second bending part 310, and only the first bending part 220 needs to be plugged into the second slot 132, so that the width of the first slot 131 is larger than that of the second slot 132, and the assembly requirements of the first bending part 220 and the second bending part 310 are met.
The width of the second slot 132 is smaller, so that the first bending portion 220 can be inserted into the second slot 132, and the first bending portion 220 is prevented from being separated from the first slot 131.
In one possible application, the number of first slots 131 is a plurality, and the number of second slots 132 is a 1.
In any of the above embodiments, the elastic support 400 includes at least one of the following: metal rubber, rubber parts and silica gel parts. In one possible application, as shown in fig. 6, the metal rubber is press formed from a wire mesh material.
In any of the above embodiments, the thickness H of the support foil 200 is 0.1 mm.ltoreq.H.ltoreq.0.5 mm.
In this embodiment, when the thickness of the support foil 200 is less than 0.1mm, the thickness of the support foil 200 is too small, and the support foil 200 is easily deformed, resulting in a weak load-carrying capacity of the support foil 200. When the thickness of the support foil 200 is greater than 0.5mm, the curling effect of the support foil 200 is poor, and the support foil 200 is not easily deformed due to the large thickness, thereby causing poor adaptation of the air bearing. Therefore, the thickness of the support foil 200 is limited to between 0.1mm and 0.5mm, so that the bearing capacity of the support foil 200 can be ensured, the curling effect of the support foil 200 can be improved, and the self-adapting capacity of the air bearing can be improved.
In any of the above embodiments, the support foil 200 comprises: stainless steel sub-foils and/or nickel-based alloy sub-foils.
In this embodiment, the support foil 200 may be made of a stainless steel material or a nickel-based alloy material, which is not easily rusted, so that the support foil 200 can have a long service life. Also, the hardness of the stainless steel material or the nickel base alloy material is high, so that the support foil 200 is not easily damaged, and thus the top foil 300 can be stably supported.
In any of the above embodiments, the air bearing further comprises: a coating layer provided on the inner periphery of the top foil 300.
In this embodiment, the coating may be a wear-resistant coating having self-lubricating properties, which may reduce friction between the rotating shaft and the inner ring of the top foil 300, thereby improving the service life of the air bearing.
In one possible application, the material of the coating may be PTFE (polytetrafluoroethylene), PTFE+MoS 2 (molybdenum disulfide), PI (polyimide) or PI+MoS 2 At least one of them.
In an embodiment of the present utility model, there is provided a compressor including: the air bearing in the above embodiment, therefore, the compressor in this embodiment can achieve all technical effects of the air bearing, which is not described herein.
In the present utility model, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (12)
1. An air bearing, comprising:
a shaft sleeve having a shaft hole;
a support foil connected to the sleeve, at least a portion of the support foil being located within the shaft bore;
a top foil, at least a portion of the top foil being located within the shaft aperture, the support foil being located between the sleeve and the top foil, the support foil being for supporting the top foil;
and the elastic support piece is connected with the shaft sleeve, and at least one part of the elastic support piece protrudes out of the inner ring of the shaft sleeve and is in contact with the support foil for supporting the support foil.
2. The air bearing of claim 1, further comprising:
and the mounting groove is formed in the inner ring of the shaft sleeve, and a part of the elastic supporting piece is positioned in the mounting groove.
3. An air bearing according to claim 2, wherein the resilient support is an interference fit with the mounting groove.
4. A gas bearing according to any one of claims 1 to 3, wherein the support foil comprises a plurality of sub-foils distributed circumferentially about the sleeve, the number of resilient supports being greater than or equal to the number of sub-foils, one sub-foil being supported by at least one resilient support.
5. The air bearing of claim 4, further comprising:
the slots are arranged on the inner ring of the shaft sleeve, the number of the slots is multiple, and the slots are arranged at intervals along the inner ring of the shaft sleeve;
the support foil further comprises:
the first bending parts are arranged at the two ends of the sub-foil along the circumferential direction of the shaft sleeve, and the first bending parts at the two ends of the sub-foil are respectively inserted into the adjacent two slots.
6. The air bearing of claim 5, further comprising:
the second bending part is arranged at the end part of the top foil and is inserted into the slot.
7. The air bearing of claim 6, wherein the slot comprises:
the first slot is used for being inserted into the first bending part and the second bending part, and the second slot is used for being inserted into the first bending part.
8. A gas bearing according to any one of claims 1 to 3, wherein the resilient support comprises at least one of:
metal rubber, rubber parts and silica gel parts.
9. A gas bearing according to any one of claims 1 to 3, wherein the thickness H of the support foil is 0.1mm +.h +.0.5 mm.
10. A gas bearing according to any one of claims 1 to 3, wherein the support foil comprises:
stainless steel sub-foils and/or nickel-based alloy sub-foils.
11. A gas bearing according to any one of claims 1 to 3, further comprising:
and the coating is arranged on the inner ring of the top foil.
12. A compressor, comprising:
an air bearing as claimed in any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320215701.1U CN219452684U (en) | 2023-02-02 | 2023-02-02 | Air bearing and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320215701.1U CN219452684U (en) | 2023-02-02 | 2023-02-02 | Air bearing and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219452684U true CN219452684U (en) | 2023-08-01 |
Family
ID=87421629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320215701.1U Active CN219452684U (en) | 2023-02-02 | 2023-02-02 | Air bearing and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219452684U (en) |
-
2023
- 2023-02-02 CN CN202320215701.1U patent/CN219452684U/en active Active
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