CN218093878U - Wave foil, wave foil assembly, axial bearing, compressor and heating and ventilation equipment - Google Patents

Abstract

The utility model discloses an axial bearing's ripples paper tinsel, axial bearing's ripples paper tinsel subassembly, axial bearing, compressor and warm logical equipment, be equipped with the ripple section of staggered connection on the ripples paper tinsel, be equipped with the notch on the ripples paper tinsel, the notch is followed the thickness direction of ripples paper tinsel runs through the ripples paper tinsel, just the notch is cut at least one ripple section on the ripples paper tinsel. By applying the technical scheme, the air input of the bearing can be improved, the stability of the air film is improved, and the bearing capacity of the bearing is improved.

Description

Wave foil, wave foil assembly, axial bearing, compressor and heating and ventilation equipment

Technical Field

The utility model relates to a bearing technical field, in particular to axial bearing's ripples paper tinsel and the ripples paper tinsel subassembly that has this ripples paper tinsel, have the axial bearing of this ripples paper tinsel subassembly, have this axial bearing's compressor and have this ripples paper tinsel subassembly or have this axial bearing or have the warm equipment of leading to of this compressor.

Background

The core component of the refrigeration system is a refrigeration compressor, in the conventional refrigeration compressor, a lubricating medium of a sliding bearing is lubricating oil, but the lubricating medium has high viscosity, can generate high friction power consumption at high rotating speed, and in addition, the existence of the lubricating oil can influence the heat exchange effect of a heat exchanger after long-term use, so that the performance of the refrigeration system is reduced. The magnetic suspension bearing has the advantages of low friction loss and good stability, but the cost is higher, and the advantages are not obvious in the application of small and medium-sized compressors. The dynamic pressure gas bearing has the advantages of high rotating speed, high efficiency and low friction loss, and is very suitable for small and medium-sized compressors. However, in the related art, the gas viscosity coefficient is small, the gas leakage amount is large, the gas film pressure is small, and the bearing capacity is small.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide an axial bearing's ripples paper tinsel can improve the bearing air input, improves the air film stability to improve the bearing capacity of bearing.

Another object of the present invention is to provide a wave foil assembly of an axial bearing, including the aforementioned wave foil.

Another object of the present invention is to provide an axial bearing, including the aforesaid bump foil assembly.

A further object of the present invention is to provide a compressor, which includes the above axial bearing.

A further object of the present invention is to provide a heating and ventilation device, which includes the aforesaid wave foil assembly for axial bearing or the aforesaid compressor.

According to the utility model discloses axial bearing's ripples paper tinsel, be equipped with the ripple section of staggered phase on the ripples paper tinsel, be equipped with the notch on the ripples paper tinsel, the notch is followed the thickness direction of ripples paper tinsel runs through the ripples paper tinsel, just the notch is cut at least one ripple section on the ripples paper tinsel.

According to the utility model discloses axial bearing's ripples paper tinsel through set up the notch on the ripples paper tinsel, can improve the bearing air input, improves the air film stability to improve the bearing capacity of bearing.

In addition, the bump foil of the axial bearing according to the above embodiment of the present invention may also have the following additional technical features:

in some examples of the invention, the plurality of corrugated sections on the corrugated foil are arranged at intervals in the circumferential direction of the axial bearing, and the notches are arranged along the arrangement direction of the corrugated sections.

In some examples of the invention, the direction of extension of the notch and the direction of extension of the corrugated section have an angle greater than 0 °.

In some examples of the invention, the notch includes a plurality of notches arranged at intervals along an extending direction of the corrugated section.

In some examples of the invention, the bump foil is provided with a notch at one side of the axial bearing in the circumferential direction, and the notch is communicated with the notch.

In some examples of the invention, the notch divides at least one of the corrugated sections into a plurality of sections spaced apart along the extension of the corrugated section.

In some examples of the invention, a ratio of a total width dimension of the notches in the wave foil to a dimension of the wave foil in a radial direction of the axial bearing is in a range of 5% to 25%.

In some examples of the present invention, a ratio of an area of the notch portion opened on the bump foil to a total area of the bump foil is in a range of 30% to 40%.

According to the utility model discloses axial bearing's ripples paper tinsel subassembly, the ripples paper tinsel subassembly includes: the wave foils are connected with the first positioning part and are arranged along the circumferential direction of the first positioning part.

According to the utility model discloses axial bearing's ripples paper tinsel subassembly through set up aforementioned ripples paper tinsel 12 on the ripples paper tinsel subassembly, can improve the bearing capacity of bearing, and the ripples paper tinsel subassembly of independent structure does benefit to the manufacturing and the assembly of bearing.

In some examples of the invention, the notch penetrates through the fixed end of the bump foil along a circumferential direction of the first positioning portion, and has a predetermined interval with the movable end of the bump foil.

In some examples of the present invention, the fixed end of the wave foil is connected to the first positioning portion along two radial sides of the first positioning portion, and the fixed end of the wave foil is connected to the first positioning portion along a radial middle region of the first positioning portion spaced apart from the first positioning portion.

In some examples of the invention, the notch divides the fixed end of the bump foil into a plurality of segments spaced apart along the radial direction.

In some examples of the present invention, the plurality of bump foils and the first positioning portion are made of the same foil.

According to the utility model discloses axial bearing, including the mount pad of range upon range of arrangement, aforementioned ripples foil assembly and top foil assembly.

According to the utility model discloses axial bearing, mount pad, the aforesaid ripples paper tinsel subassembly and the range upon range of arrangement of top paper tinsel subassembly do benefit to and make and assemble, and do benefit to the bearing capacity who improves the bearing.

According to the utility model discloses compressor, including aforementioned axial bearing.

According to the utility model discloses compressor through using aforementioned axial bearing on the compressor, can improve the stability and the durability of compressor operation.

According to the embodiment of the utility model, the heating and ventilation equipment comprises the wave foil assembly for the axial bearing; or comprising the aforementioned axial bearing; or include the aforementioned compressor.

Drawings

Fig. 1 is a partial schematic structural view of an axial bearing in some embodiments of the present invention (showing a mount, a bump foil assembly and a top foil assembly).

Fig. 2 is a schematic diagram of a bump foil assembly according to some embodiments of the present invention.

Fig. 3 is a schematic diagram of a top foil assembly in some embodiments of the invention.

Reference numerals:

1. a bump foil assembly; 106. a second positioning hole; 11. a first positioning portion; 101. a first avoidance hole; 103. a first gap; 111. a first outer race; 112. a first inner race; 113. a first fixed edge; 12. a bump foil; 122. a corrugated section; 201. a notch; 202. a notch; 12a, a fixed end; 12b, a movable end; 2. a top foil assembly; 21. a second positioning portion; 22. a top foil; 102. a second avoidance hole; 104. a second gap; 211. a second outer race; 212. a second inner race; 213. a second fixed edge; 107. a third positioning hole; 3. a mounting base; 105. a first positioning hole; 31. and (5) positioning the boss.

Detailed Description

China is the biggest world producing, consuming and exporting country of refrigeration products, and the refrigeration energy consumption accounts for 15 percent of the total social energy consumption. During the peak period in summer, the increase of the refrigeration load of an air conditioner and the like not only brings heavy burden to a power grid, but also generates a large amount of greenhouse gas emission. Therefore, the promotion of green high-efficiency refrigeration is an important and urgent need for promoting energy conservation and emission reduction and coping with climate change in various countries.

The core component of the refrigeration system is a refrigeration compressor, in the conventional refrigeration compressor, a lubricating medium of a sliding bearing is lubricating oil, but the lubricating medium has high viscosity, can generate high friction power consumption at high rotating speed, and in addition, the existence of the lubricating oil can influence the heat exchange effect of a heat exchanger after long-term use, so that the performance of the refrigeration system is reduced. The magnetic suspension bearing has the advantages of low friction loss and good stability, but the cost is higher, and the advantages are not obvious in the application of small and medium-sized compressors. The dynamic pressure gas bearing has the advantages of high rotating speed, high efficiency and low friction loss, and is very suitable for small and medium-sized compressors. In the related technology, the gas viscosity coefficient is small, the gas leakage amount is large, the gas film pressure is small, and the bearing capacity is small; gas is brought between the top foil and the thrust plate from the wedge-shaped area by the straight thrust plate to form a high-pressure gas film, but the high-pressure gas between the top foil and the thrust plate leaks greatly due to the low viscosity coefficient of gaseous coolant, so that the formed pressure is limited, and the bearing capacity of the axial foil gas dynamic pressure bearing is low.

Therefore, the utility model provides an axial bearing's ripples paper tinsel through set up notch 201 on ripples paper tinsel 12, can improve the bearing air input, improves the air film stability, and then improves the bearing capacity of bearing.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

With reference to fig. 1 to fig. 3, according to the utility model discloses axial bearing's ripples paper tinsel 12 is equipped with staggered phase's ripple section 122 on the ripples paper tinsel 12, is equipped with notch 201 on the ripples paper tinsel 12, and notch 201 runs through ripples paper tinsel 12 along the thickness direction of ripples paper tinsel 12, and notch 201 cuts at least one ripple section 122 on the ripples paper tinsel 12, can axial bearing's air input, improves the gas film stability, and then improves axial bearing's bearing capacity. Specifically, the notch 201 cuts the corrugated section 122 on the corrugated foil 12, and when the axial bearing load is large, the corrugated section 122 of the corrugated foil 12 at the notch 201 is easy to deform and the deformation amount is large, so that the air inflow can be increased; when the load of the area of the corrugated foil 12 far away from the notch 201 is large, the deformation of the corrugated section 122 is relatively small, so that the leakage rate of gas after entering can be reduced, and the bearing capacity of the axial bearing is improved. Specifically, the size of the notch 201 may be adjusted according to actual conditions, or the number of the notches 201 cutting the corrugated section 122 may be increased to increase the intake air amount.

According to the utility model discloses axial bearing's ripples paper tinsel 12 through set up notch 201 on ripples paper tinsel 12, can improve the bearing air input, improves air film stability.

When the bearing works, gas is brought between the top foil 22 and the thrust disc from the wedge-shaped area by the thrust disc to form a high-pressure gas film, the notch 201 cuts at least one corrugated section 122 on the corrugated foil 12, the rigidity of the corrugated foil 12 in the area where the notch 201 of the corrugated foil 12 is located can be effectively reduced, when the bearing load is larger, the deformation of the corrugated section 122 of the corrugated foil 12 is increased, the increase of the air inflow of the wedge-shaped area between the top foil assembly 2 and the thrust disc is facilitated, and the deformation of other areas of the corrugated foil 12 is smaller than that of the notch 201, so that the air leakage can be reduced, and the stable gas film is facilitated to be formed.

With reference to fig. 2, in some embodiments of the present invention, the plurality of corrugated sections 122 on the corrugated foil 12 are arranged along the circumferential direction of the axial bearing at intervals, and the notches 201 extend along the arrangement direction of the corrugated sections 122, so that there are deformation spaces between the plurality of corrugated sections 122, and when the corrugated sections 122 are under pressure, they can deform circumferentially, which is beneficial to supporting the axial suspension to avoid axial movement. The notch 201 extends in the direction of arrangement of the bellows 122, so that the notch 201 can cut a plurality of bellows 122 to increase the amount of intake air.

In some embodiments of the present invention, the extending direction of the notch 201 and the extending direction of the corrugated section 122 have an included angle greater than 0 °. That is, the extending direction of the slot 201 is different from the extending direction of the corrugated section 122, so that the corrugated section 122 deforms during the movement of the bearing, thereby enlarging the opening of the slot 201, facilitating the air suction and improving the air intake amount.

In some embodiments of the present invention, the notch 201 includes a plurality of notches arranged at intervals along the extending direction of the corrugated portion 122, so as to further increase the air input and improve the bearing capacity.

In some embodiments of the present invention, the bump foil 12 is provided with a notch 202 on one side of the axial bearing in the circumferential direction, and the notch 201 is communicated with the notch 202, which is favorable for improving the air input. Specifically, the notch 202 may separate the bump foil 12 from the first positioning portion 11, and the notch 201 communicates with the notch 202, which may increase the opening of the notch 201; the extension space of the corrugated section 122 in the circumferential direction can be increased, and deformation of the corrugated section 122 is facilitated to increase the air intake amount in the wedge-shaped area of the top foil assembly 2.

Of course, the notch 202 may not be provided, the plurality of notches 201 are directly connected to one side of the first positioning portion 11, or the plurality of notches 201 are all disposed on the bump foil 12 and spaced apart from the first positioning portion 11, and the present invention is not limited thereto.

In some embodiments of the present invention, in conjunction with fig. 2, the notch 201 divides at least one corrugated section 122 into multiple segments spaced along the extension of the corrugated section 122.

In some embodiments of the invention, the ratio of the total width dimension of the slots 201 in the bump foil 12 to the dimension of the bump foil 12 in the radial direction of the axial bearing is in the range of 5% to 25%. Therefore, the rigidity of the middle part of the notch 201 area of the wave foil 12 can be effectively reduced by the notch 201, the deformation from the radial notch 201 area of the wave foil 12 is increased under the condition of larger bearing load, the increase of the air inflow of the wedge-shaped area of the top foil 22 is facilitated, the deformation of the periphery (except the radial slotted area and the middle circumferential slotted area) of the wave foil 12 is smaller than that of the middle part, the deformation of the periphery of the top foil 22 at the corresponding position can be reduced, the gas leakage amount of the periphery position is reduced, the gas average pressure of the bearing is improved, and the integral bearing capacity of the bearing is improved.

In practical applications, the ratio of the total width dimension of the notch 201 in the bump foil 12 to the dimension of the bump foil 12 in the radial direction of the axial bearing may be set to 10% or 20%, or the like. Of course, the ratio of the total width dimension of the notch 201 in the bump foil 12 to the dimension of the bump foil 12 in the radial direction of the axial bearing may also be set to 5% or 30% or the like according to the practical application, and the present invention is not limited thereto.

In some embodiments of the present invention, the ratio of the area of the notch 201 on the wave foil 12 to the total area of the wave foil 12 is in the range of 30% to 40%, which is favorable for ensuring the bearing capacity of the wave foil 12 and can ensure the structural stability of the wave foil 12. For example, the ratio of the area of the portion of the corrugated foil 12 where the notch 201 is opened to the total area of the corrugated foil 12 is 35%. Of course, the ratio of the area of the part of the corrugated foil 12 where the notch 201 is opened to the total area of the corrugated foil 12 may be set to be less than 30% or greater than 40% according to actual conditions.

Further, with reference to fig. 2, the present invention further provides a bump foil assembly 1 of an axial bearing, where the bump foil assembly 1 includes: the first positioning portion 11, and a plurality of the aforementioned bump foils 12, the plurality of bump foils 12 being connected to the first positioning portion 11 and being arranged along the circumferential direction of the first positioning portion 11. That is, the bump foil 12 may be disposed on the first positioning portion 11 to form the bump foil assembly 1 may improve structural stability of mounting of the bump foil 12, and the bump foil assembly 1 may be configured as a separate component to facilitate manufacturing and assembly.

According to the utility model discloses axial bearing's ripples paper tinsel subassembly 1 through set up aforementioned ripples paper tinsel 12 on ripples paper tinsel subassembly 1, can improve the bearing capacity of bearing, and the ripples paper tinsel subassembly 1 of independent structure is favorable to the manufacturing and the assembly of bearing.

More specifically, referring to fig. 2, in some embodiments of the present invention, the notch 201 penetrates the fixed end 12a of the bump foil 12 in the circumferential direction of the first positioning portion 11 and has a predetermined interval from the movable end 12b of the bump foil 12. Specifically, the fixed end 12a of the wave foil 12 has high stability, and the deformation of the corrugated section 122 of the wave foil 12 near the movable end 12b may be greater than that of the fixed end 12a, so that the notch 201 connecting the axial direction of the first positioning portion 11 penetrates through the fixed end 12a of the wave foil 12 and keeps a certain distance from the movable end 12b of the wave foil 12, and the deformation of the fixed end 12a of the wave foil 12 may be increased, thereby facilitating to maintain the dynamic balance of the wave foil assembly 1. In addition, when the bearing is used, the deformation of the fixed end 12a of the bump foil 12 is increased, the air inflow is increased, the deformation of the movable end 12b of the bump foil 12 is smaller, the air flow is smaller, the air leakage can be reduced, and the stable air film is favorably formed.

In some embodiments of the present invention, the fixed end 12a of the bump foil 12 is connected to the first positioning portion 11 along both sides of the first positioning portion 11 in the radial direction, so as to connect the bump foil 12 to the first positioning portion 11. Further, the middle region of the fixed end 12a of the bump foil 12 in the radial direction of the first positioning portion 11 is spaced from the first positioning portion 11, so that the deformation amount of the bump section 122 of the bump foil 12 in the middle region of the fixed end 12a can be increased, which is beneficial to increasing the air intake amount in the middle region.

With reference to fig. 2, in some embodiments of the present invention, the notch 201 divides the fixed end 12a of the bump foil 12 into multiple segments spaced apart along the radial direction, which is beneficial to increase the air inflow, and can disperse the air inflow position, which is beneficial to maintaining the dynamic balance of the deformation of the bump foil 12.

With reference to fig. 2, in some embodiments of the present invention, a plurality of first avoiding holes 101 are disposed on the first positioning portion 11, the plurality of first avoiding holes 101 are arranged along the circumferential direction of the first positioning portion 11 and run through the first positioning portion 11, and the plurality of wave foils 12 are opposite to the plurality of first avoiding holes 101. That is, the plurality of first avoiding holes 101 may be used to mount the plurality of bump foils 12, so as to dispose the bump foils 12 on the first positioning portion 11 to form the bump foil assembly 1. The first avoiding hole 101 may be directly formed in the first positioning portion 11, which is beneficial to simplifying the structure of the structural bump foil assembly 1.

In some embodiments of the present invention, the wave foil 12 is connected to one side of the corresponding first avoiding hole 101 along one side in the circumferential direction of the first positioning portion 11, and the remaining sides of the wave foil 12 are located inside the corresponding first avoiding hole 101 in the axial projection. Specifically, one side edge of the wave foil 12 is connected to one side edge of the first avoiding hole 101, and the other side edges of the wave foil 12 are located in the first avoiding hole 101, so that the wave foil 12 can be movably connected to the first positioning portion 11, which is beneficial to improving the functionality of the wave foil 12. For example, the wave foil 12 may extend along the remaining sides of the wave foil 12 projected axially when subjected to a force.

Specifically, a first gap 103 is formed between the other side of the bump foil 12 in the circumferential direction of the first positioning portion 11 and the corresponding side of the first avoidance hole 101, and the first gap 103 may provide a deformation space for the bump foil 12 to deform under stress. In addition, the first gap 103 may also facilitate the connection of the bump foil assembly 1 with the mount 3 and the top foil assembly 2.

In some embodiments of the present invention, the first positioning portion 11 is configured to be a hollow ring, which is beneficial to improve the rotation effect of the bearing and is convenient for manufacturing.

Further, in some embodiments of the present invention, the first positioning portion 11 includes: the first outer ring 111, the first inner ring 112 and a plurality of first fixed edges 113, the first inner ring 112 is arranged at the inner side of the first outer ring 111, and an annular structure is constructed. The first fixed edges 113 are respectively connected to the first inner ring 112 and the first outer ring 111, and are arranged at intervals along the circumferential direction of the first positioning portion 11, that is, the first fixed edges 113 separate a plurality of first avoidance holes 101 on the annular structure, and further, the bump foils 12 are connected to the corresponding first fixed edges 113 to be fixedly connected to the first positioning portion 11. Here, the first positioning portion 11 may be an integrally formed structure to facilitate manufacturing. In assembling, the plurality of bump foils 12 may be attached to the first positioning portion 11.

Referring to fig. 2, in some embodiments of the present invention, the plurality of corrugated sections 122 on the corrugated foil 12 are arranged at intervals along the circumferential direction of the first positioning portion 11. When the corrugated section 122 is applied, the corrugated section can deform in the circumferential direction when being stressed, and axial suspension is supported to avoid axial movement.

In some embodiments of the present invention, the corrugated section 122 on the corrugated foil 12 extends along a predetermined direction, and the predetermined direction and the radial direction of the first positioning portion 11 have an included angle smaller than 90 °, which is beneficial to improving the bearing effect of the corrugated foil 12. Specifically, the included angle between the predetermined direction and the radial direction of the first positioning portion 11 may be adjusted according to the extending space of the corrugated segment 122 or the actual use condition, for example, the included angle between the predetermined direction and the first positioning portion 11 is 60 °.

In some embodiments of the present invention, the included angle between the predetermined direction and the radial direction of the first positioning portion 11 is in a range of 0 to 45 °, so as to improve the axial supporting effect of the bump foil 12.

The utility model discloses an in some embodiments, a plurality of ripples paper tinsel 12 and first locating part 11 fixed connection back one shot forming do benefit to the quality that improves a plurality of ripples paper tinsel 12, do benefit to the bearing capacity and the durability that improve ripples paper tinsel 12. Specifically, the plurality of bump foils 12 are integrally installed behind the first positioning portion 11, so that the heights of the plurality of bump foils 12 are consistent, the heights of the bumps of the plurality of bump sections 122 are consistent, and the gaps between the plurality of bump foils 12 and the first positioning portion 11 are consistent, so that the loads of the plurality of bump foils 12 are consistent, and the bearing capacity of the bearing is improved. Therefore, when the plurality of axial bearings are used, the axial bearings have consistency and are beneficial to improving the bearing performance.

In some embodiments of the present invention, the plurality of bump foils 12 and the first positioning portion 11 are integrally formed, that is, the bump foil assembly 1 is an integral structure, which is convenient for manufacturing.

In some embodiments of the present invention, the plurality of bump foils 12 and the first positioning portion 11 may be made of the same foil, which is convenient for manufacturing and can ensure the consistency of the plurality of bump foils 12. For example, a plurality of bump foils 12 may be directly formed on the same foil; a plurality of foils may be cut from the same foil, connected to the first positioning portion 11, and integrally formed to form a plurality of bump foils 12.

With reference to fig. 2, a bump foil assembly 1 according to some embodiments of the present invention comprises: the first outer ring 111, the plurality of bump foils 12, the first avoidance hole 101, the first fixing edge 113, the first inner ring 112, and the second positioning hole 106. The first outer ring 111, the first inner ring 112 and the first fixed edge 113 form an integrated first positioning portion 11. The bump foil 12 may have 8 pieces, and each of the 8 pieces of bump foil 12 has a fixed end 12a and a movable end 12b, and the fixed end 12a is connected with the first positioning portion 11 to form a whole.

During manufacturing, the plurality of corrugated foils 12 can be integrally molded, and the corrugated foils 12 can be consistent in height. Each bump foil 12 starts to be provided with radial notches 201 and axial notches 202 at the connecting part of the fixed end 12a and the bump foil 12, the number of the notches 201 in the radial direction can be more than or equal to 4, and the area of the notch 201 part on the bump foil 12 accounts for 30-40% of the area of the whole bump foil 12. Specifically, in practical application, the notch 201 can effectively reduce the rigidity of the middle part of the notch 201 region of the bump foil 12, the deformation from the radial slotted part is increased under the condition of larger bearing load, the air input of the wedge-shaped region of the top foil 22 is increased, the three-cycle deformation (except the radial slotted part and the middle circumferential slotted part) of the bump foil 12 is smaller than the middle deformation, the deformation of the top foil 22 at the corresponding position in the three-cycle direction can be reduced, the gas leakage amount at the three-cycle position is reduced, the average gas pressure of each bearing is improved, and the integral bearing capacity of each bearing is improved; the first gap 103 can avoid the positioning boss 31 on the mounting seat 3, the wave foil 12 is axially limited by the positioning boss 31, and is axially pressed and positioned by the top foil 22, so that welding is not needed, and the welding process of the wave foil 12 can be reduced. The radial notch 201 and the notch 202 in the axial direction are formed in the position, corresponding to the wedge-shaped area, of the bump foil 12, so that the rigidity of the air inlet position (the wedge-shaped area) of the bearing is low, the rigidity of the other three circles is high, under the condition of high load, the air inflow of the wedge-shaped area of each bearing is increased, the air leakage of the other three circles is reduced, the air film pressure between each bearing and the thrust disc is increased, and the bearing capacity of each bearing is improved by more than 30%.

The utility model also provides an axial bearing, mount pad 3, the aforesaid ripples paper tinsel subassembly 1 and the top paper tinsel subassembly 3 of arranging including range upon range of. In this way, the wave foil 12 is disposed on the first positioning portion 11 to form the wave foil assembly 1, which can improve the structural stability of the wave foil 12 installation, and the wave foil assembly 1 is configured as a separate component, which is convenient for manufacturing and assembling, and is beneficial for improving the bearing capacity of the bearing. Thus, the mount 3, the bump foil assembly 1, and the top foil assembly 2 can be separately manufactured and stacked for easy assembly.

With reference to fig. 1 to 3, according to the present invention, the axial bearing can improve the bearing capacity and durability of the axial bearing by applying the aforementioned bump foil assembly 1 to the axial bearing, and the mounting seat, the bump foil assembly and the top foil assembly can be manufactured respectively, stacked, and assembled conveniently.

In connection with fig. 3, in some embodiments of the invention, the top foil assembly 2 comprises: a second positioning portion 21 and a plurality of top foils 22, the plurality of top foils 22 being connected to the second positioning portion 21 and arranged in the circumferential direction of the second positioning portion 21. In particular, the top foil 22 being provided on the second positioning portion 21 to form the top foil assembly 2 may improve the structural stability of the top foil 22 installation, the top foil assembly 2 being constructed as a separate component, facilitating manufacturing and assembly. Further, the plurality of top foils 22 correspond to and are stacked on the plurality of wave foils 12, and the plurality of wave foils 12 can provide support for the plurality of top foils 22, which is beneficial to improving the operation stability and is convenient for assembly and maintenance.

In some embodiments of the present invention, a plurality of second avoiding holes 102 are disposed on the second positioning portion 21, the plurality of second avoiding holes 102 are arranged along a circumferential direction of the second positioning portion 21 and run through the second positioning portion 21, and the plurality of top foils 22 are opposite to the plurality of second avoiding holes 102. In other words, the second avoiding holes 102 may be used to mount the top foils 22, so as to connect the top foils 22 to the second positioning portions 21. The second avoiding hole 102 may be directly formed on the second positioning portion 21, which is beneficial to simplifying the structure of the structural top foil assembly 2.

In some embodiments of the present invention, one side of the top foil 22 in the circumferential direction of the second positioning portion 21 is connected to one side of the corresponding second avoiding hole 102, and the remaining sides of the top foil 22 are located inside the corresponding second avoiding hole 102 in the axial projection. Specifically, one side edge of the top foil 22 is connected to one side edge of the second avoiding hole 102, and the other side edges of the top foil 22 are located in the second avoiding hole 102, so that the top foil 22 can be movably connected to the second positioning portion 21, which is beneficial to improving the functionality of the top foil 22. For example, the top foil 22 may extend along the remaining sides of the bump foil 12 projected axially when subjected to a force.

In some embodiments of the present invention, the top foil 22 has a second gap 104 between the other side edge in the circumferential direction of the second positioning portion 21 and the side edge of the corresponding second avoidance hole 102. The second gap 104 may provide a deformation space for the top foil 22 to deform under force.

In some embodiments of the present invention, in conjunction with fig. 1, the second gap 104 is opposite a portion of the corresponding bump foil 12, whereby the second gap 104 may facilitate the connection of the top foil assembly 2 with the bump foil assembly 1 or the mount 3.

Specifically, the second gap 104 is opposite to the fixed end 12a of the corresponding bump foil 12, which facilitates the gas to enter the wedge-shaped area in the top foil assembly 2 and the thrust plate bracket from the second gap 104, which facilitates the increase of the gas inflow to improve the bearing capacity.

Referring to fig. 2, in some embodiments of the present invention, the corrugated foil 12 is provided with a notch 201, and the second gap 104 is opposite to the notch 201. The notch 201 can increase the deformation of the bump foil 12, so that air inlet is facilitated, the notch 201 is opposite to the second gap 104, and the gas entering the bump foil 12 directly enters the top foil assembly 2, so that energy loss is avoided, and the operation effect of the axial bearing is improved.

More specifically, with reference to fig. 3, in some embodiments of the present invention, the second positioning portion 21 includes: a second outer ring 211, a second inner ring 212, and a second fixed edge 213, wherein the second inner ring 212 is disposed inside the second outer ring 211 to form an annular structure. The second fixing edges 213 are respectively connected to the second inner ring 212 and the second outer ring 211, the second fixing edges 213 may be arranged at intervals along the circumferential direction, that is, the second fixing edges 213 separate a plurality of second avoiding holes 102 on the annular structure, and further, the top foil 22 is connected to the corresponding second fixing edge 213 so as to be fixedly connected to the second positioning portion 21. Here, the second positioning portion 21 may be an integrally formed structure to facilitate manufacturing. In assembling, the plurality of top foils 22 may be attached to the second positioning portion 21.

In some embodiments of the present invention, the top foils 22 and the second positioning portion 21 are integrally formed, so as to improve the quality of the top foils 22 and the bearing capacity and durability of the top foils 22. Specifically, the top foils 22 may be integrally installed on the second positioning portion 21, or the top foils 22 and the second positioning portion 21 may be integrally constructed, so that the gaps between the top foils 22 and the second positioning portion 21 are consistent, the loads of the top foils 22 are consistent, and the bearing capacity of the bearing is improved. In combination with the foregoing, the gaps and loads between the plurality of wave foils 12 and the first positioning portion 11 are consistent, the plurality of wave foils 12 are matched with the plurality of top foils 22, the wave foils 12 and the top foils 22 are arranged oppositely, and the consistency between the plurality of top foils 22 and the plurality of top foils 22 enables the wave foils 12 to be stably matched with the top foils 22, so that structural stability is improved, and the bearing capacity is improved. Therefore, when the plurality of axial bearings are used, the axial bearings have consistency, and the performance of the bearings is improved.

In particular, in connection with fig. 3, according to the top foil assembly 2 of some embodiments of the present invention, the top foil assembly 2 comprises: a second outer collar 211, a second inner collar 212, a second stationary rim 213, a plurality of top foils 22 and a third positioning hole 107. The second outer ring 211, the second inner ring 212 and the second fixing edge 213 form a second avoiding hole 102, and the top foil 22 is connected in the second avoiding hole 102 to form the top foil assembly 2. The top foil assembly 2 can be an integrated structure, and during manufacturing, the integrated top foil 22 forming die is used for pressing and forming the top foil, so that 8 pieces of top foils 22 are consistent in height, the corrugated foils 12 with consistent height are matched, the gap between each piece of top foil 22 of the bearing and the thrust disc is consistent, the load of each piece of bearing is consistent, and the integral bearing capacity of the bearing is improved. When the rotor suspension device is used, the inclined surface of the top foil 22 and the thrust disc form a wedge-shaped area, the thrust disc drives airflow to enter the top foil 22 from the wedge-shaped area under high-speed rotation, and high-pressure gas is formed through compression of the wedge-shaped area, so that rotor suspension can be realized. More specifically, the welding position of the top foil assembly 2 and the mounting seat 3 are fixed by welding through the positioning boss 31, and the third positioning hole 107 realizes the positioning and locking of the top foil assembly 2, the second positioning hole 106 of the bump foil assembly 1 and the first positioning hole 105 of the mounting seat 3 together.

According to the utility model discloses axial bearing of some embodiments through constructing integral type ripples paper tinsel subassembly 1 and integral type top paper tinsel subassembly 2, realizes the highly uniform between each lamella bearing to realize and the thrust disc between the clearance unanimous, the load between each piece bearing is unanimous when the operation, thereby realizes that the whole bearing capacity of axial bearing is the biggest. In the related art, the height difference between the lobe bearings is large, the load between the lobe bearings is inconsistent, when the individual bearing capacity reaches the limit, the bearing capacity is small due to the large gap, so that the whole bearing capacity of the axis bearing is small, sometimes even only one lobe bearing works at the maximum load, and when the load continues to increase, the top foil 22 with the small gap is worn, so that the bearing rapidly fails.

Therefore, the utility model discloses a set up integral type ripples paper tinsel subassembly 1, integral type top paper tinsel subassembly 2, can realize ripples paper tinsel 12 and top paper tinsel 22 one shot forming, the scheme of long and flow than correlation technique has reduced about 85% during its shaping process to in this application, ripples paper tinsel 12 passes through the axial and the spacing welding that need not of axial, and the long scheme that has reduced about 50% with the process than correlation technique during the welding.

In some embodiments of the present invention, the mounting seat 3 is provided with a first positioning hole 105 at the periphery, the bump foil assembly 1 is provided with a second positioning hole 106 at the periphery, the top foil assembly 2 is provided with a third positioning hole 107 at the periphery, and the first positioning hole 105, the second positioning hole 106 and the third positioning hole 107 are opposite to each other. Specifically, the first positioning hole 105, the second positioning hole 106 and the third positioning hole 107 are communicated, and the positioning element can pass through the positioning holes to connect the mounting base 3, the bump foil assembly 1 and the top foil assembly 2, that is, the first positioning hole 105, the second positioning hole 106 and the third positioning hole 107 are matched to jointly realize the positioning and locking of the axial bearing. The first positioning hole 105, the second positioning hole 106 and the third positioning hole 107 are respectively arranged along the periphery of the mounting base 3, the bump foil assembly 1 and the top foil assembly 2 at intervals, so as to improve the positioning effect.

In some embodiments of the present invention, the axial bearing further comprises a thrust disk, and the opposite sides of the thrust disk are stacked with the top foil assembly 2, the bump foil assembly 1, and the mounting seat 3. When the thrust disc rotates at a high speed, gas is brought into a wedge-shaped area between the thrust disc and the top foil assembly 2, and a high-pressure gas film is formed, so that the thrust disc can be axially suspended, and the balance of the thrust disc is favorably maintained.

The utility model discloses an in some embodiments, top paper tinsel subassembly 2, ripples paper tinsel subassembly 1 and mount pad 3 do benefit to the equilibrium that improves the thrust plate at the relative bilateral symmetry arrangement of thrust plate, do benefit to the equilibrium that improves the axial bearing during operation.

Specifically, according to some embodiments of the present invention, the front axial direction has a front mounting seat 3, a front bump foil assembly 1 and a front top foil assembly 2 on opposite sides of the thrust disk; the rear shaft is provided with a rear top foil component 2, a rear wave foil component 1, a rear mounting seat 3 and other parts. Wherein the front axial bearing and the rear axial bearing are symmetrically distributed on two sides of the thrust disk.

Specifically, according to the utility model discloses mount pad 3 of some embodiments contains backup pad, first locating hole 105 and location boss 31, and wherein the backup pad is used for supporting axial ripples foil 12, and first locating hole 105 is used for the axial bearing installation, and location boss 31 is used for spacing and with axial top foil subassembly 2 welded connection of axial ripples foil 12. More specifically, the mounting base 3 further has a bottom plate and a flange, the bottom plate is connected to the flange, the flange extends along an axial direction, and an accommodating space suitable for accommodating the bump foil assembly 1 and the top foil assembly 2 is formed by the bottom plate and the flange, so that when the positioning boss 31 penetrates through the bump foil assembly 1 and the top foil assembly 2 for welding connection, an integrated structure can be formed.

According to the utility model discloses compressor, including aforementioned axial bearing, through using aforementioned axial bearing on the compressor, can improve the stability and the durability of compressor operation.

The utility model also provides a warm equipment of leading to, this warm equipment of leading to includes aforementioned ripples paper tinsel subassembly 1.

The utility model also provides a warm equipment of leading to, this warm equipment of leading to includes aforementioned axial bearing.

The utility model also provides a warm equipment of leading to, this warm equipment of leading to includes aforementioned compressor.

In the description of the present invention, it is to be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings only for the convenience of description and simplicity of description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (16)

1. The wave foil of the axial bearing is characterized in that the wave foil is provided with corrugated sections which are connected in a staggered mode, the wave foil is provided with notches, the notches penetrate through the wave foil in the thickness direction of the wave foil, and the notches cut at least one corrugated section on the wave foil.

2. The bump foil of an axial bearing of claim 1, wherein a plurality of bump segments on the bump foil are arranged at intervals in a circumferential direction of the axial bearing, and the notch extends in an arrangement direction of the bump segments.

3. The bump foil of an axial bearing of claim 2, wherein the direction of extension of the notches has an angle greater than 0 ° with the direction of extension of the corrugated section.

4. The bump foil of an axial bearing of claim 2, wherein the notch comprises a plurality of notches arranged at intervals along an extension direction of the corrugated section.

5. The bump foil of an axial bearing according to any one of claims 1 to 4, wherein the bump foil is provided with a notch on one side in a circumferential direction of the axial bearing, the notch communicating with the notch.

6. The bump foil of an axial bearing according to any one of claims 1 to 4, wherein the notches divide at least one of the bump segments into a plurality of segments spaced apart in the direction of extension of the bump segment.

7. The bump foil of an axial bearing of any one of claims 1-4, wherein a ratio of a total width dimension of the notches in the bump foil to a dimension of the bump foil in a radial direction of the axial bearing is in a range of 5% to 25%.

8. The wave foil of an axial bearing according to any one of claims 1 to 4, wherein a ratio of an area of the notched portion of the wave foil to a total area of the wave foil is in a range of 30% to 40%.

9. A bump foil assembly for an axial bearing, the bump foil assembly comprising:

a first positioning portion;

a plurality of bump foils according to any one of claims 1 to 8, connected to the first positioning portion and arranged in a circumferential direction of the first positioning portion.

10. The bump foil assembly of an axial bearing of claim 9, wherein the notch penetrates through a fixed end of the bump foil in a circumferential direction of the first positioning portion and has a predetermined interval from a movable end of the bump foil.

11. The bump foil assembly of an axial bearing of claim 10, wherein the fixed end of the bump foil is connected to the first retainer along both sides in a radial direction of the first retainer, and the fixed end of the bump foil is spaced apart from the first retainer along a middle region in the radial direction of the first retainer.

12. The bump foil assembly of an axial bearing of claim 11, wherein the notch divides the fixed end of the bump foil into segments spaced apart along the radial direction.

13. The bump foil assembly of an axial bearing of any one of claims 9 to 12, wherein a plurality of the bump foils and the first positioning portion are made of the same foil sheet.

14. An axial bearing comprising a mount, a bump foil assembly and a top foil assembly in a stacked arrangement, the bump foil assembly being in accordance with any one of claims 9 to 13.

15. A compressor, characterized by comprising an axial bearing according to claim 14.

16. Heating and ventilation device, characterized by a bump foil assembly comprising an axial bearing according to any of claims 1-13; or comprising an axial bearing according to claim 14; or comprising a compressor according to claim 15.

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