阅读说明：本技术 滚子组件、泵体组件和压缩机 (Roller assembly, pump body assembly and compressor ) 是由 魏会军 丁少鹏 牟迪 邓丽颖 杨欧翔 赵海红 于 2021-09-10 设计创作，主要内容包括：本申请提供一种滚子组件、泵体组件和压缩机。该滚子组件包括滚子,包括滚子本体和内衬层,所述内衬层由弹性材料制成；所述内衬层沿所述滚子径向方向设在所述滚子本体内壁上。滚子采用在本体内设置弹性材料制成的内衬层,具有弹性变形与弹性补偿作用,将原配副的刚性接触转变为弹性接触,这样就能避免滚子与上、下法兰或隔板发生刚性接触时,表面材料不易产生塑性变形与脱离而破坏,有效改善端面异常摩擦磨损问题。(The application provides a roller subassembly, pump body subassembly and compressor. The roller assembly comprises a roller, a roller body and an inner lining layer, wherein the inner lining layer is made of an elastic material; the inner liner is arranged on the inner wall of the roller body along the radial direction of the roller. The roller adopts the inner liner layer that sets up elastic material in this body and make, has elastic deformation and elastic compensation effect, changes the rigid contact of original accessory into elastic contact, just so can avoid the roller and upper and lower flange or baffle when taking place rigid contact, surface material is difficult for producing plastic deformation and breaking away from and destroying, effectively improves the unusual frictional wear problem of terminal surface.)

1. A roller assembly, comprising:

a roller (5) comprising a roller body (51) and an inner liner (52), the inner liner (52) being made of an elastic material;

the inner liner (52) is arranged on the inner wall of the roller body (51) along the radial direction of the roller (5).

2. The roller assembly of claim 1, wherein the inner liner (52) is provided in an annular form with an interference fit with the roller body (51).

3. The roller assembly according to claim 2, characterized in that the two ends of the lining layer (52) comprise a head (53), the head (53) is provided in a ring plate structure, and the extension direction of the ring plate is the radial direction of the roller (5); the end face of the roller body (51) is provided with a groove (57) for accommodating part of the head part (53).

4. The roller assembly of claim 3, characterized in that the head (53) is obliquely disposed with its outer periphery remote from the body of the lining layer (52); the included angle between the head (53) and the cross section of the roller (5) is set to be theta, and the condition that 0< theta <500mrad is met.

5. The roller assembly of claim 4, characterized in that the outer periphery of the head (53) protrudes beyond the end face of the roller body (51) by a distance h5, satisfying 50 μm ≧ h5 ≧ 0 μm.

6. The roller assembly according to claim 3 or 4, characterized in that the body of the lining layer (52) comprises a support portion (54) provided in a straight tube shape, one end of the support portion (54) being connected to a side surface of the head portion (53).

7. The roller assembly according to claim 6, characterized in that the support portion (54) is provided as two axial segments, and the main body further comprises a compensation portion (55) connected to the support portion (54), wherein the compensation portion (55) is provided between the two support portions (54) for compensating two ends of the lining layer (52).

8. The roller assembly of claim 7, characterized in that the compensating portion (55) is provided in at least one of a wave shape and an arc shape in an axial direction of the inner liner (52).

9. The roller assembly according to claim 8, characterized in that the outer diameter of the compensating portion (55) is smaller than the outer diameter of the supporting portion (54) and the inner diameter of the compensating portion (55) is smaller than the inner diameter of the supporting portion (54).

10. A pump body assembly comprising a roller assembly according to any one of claims 1 to 9.

11. A compressor comprising a roller assembly according to any one of claims 1 to 9 or a pump body assembly according to claim 10.

Technical Field

The application belongs to the technical field of compressors, and particularly relates to a roller assembly, a pump body assembly and a compressor.

Background

The end surface abrasion of parts of a pump body is a common failure mode of a rotary compressor, a roller is easily subjected to operation condition change or external disturbance interference in normal work to cause end surface oil film breakage, a matched end surface is forced to rapidly enter a boundary lubrication state, mechanical collision is caused in severe cases, at the moment, the roller in the traditional structure is in rigid contact with an upper flange, a lower flange or a partition plate, and surface materials are easily subjected to plastic deformation and separation to be damaged.

Disclosure of Invention

Therefore, the application provides a roller subassembly, pump body subassembly and compressor, can solve prior art in the roller and take place rigid contact with upper and lower flange or baffle, the surface material very easily produces plastic deformation and breaks away from and the problem of destruction.

In order to solve the above problems, the present application provides a roller assembly including:

the roller comprises a roller body and an inner lining layer, wherein the inner lining layer is made of an elastic material;

the inner liner is arranged on the inner wall of the roller body along the radial direction of the roller.

Optionally, the lining layer is annular and is in interference fit with the roller body.

Optionally, the two ends of the lining layer comprise heads, the heads are in a ring plate structure, and the extension direction of the ring plate is the radial direction of the roller; a groove for accommodating part of the head is arranged on the end face of the roller body.

Optionally, the head is arranged obliquely, and the outer periphery of the head is far away from the main body of the lining layer; the included angle between the head and the cross section of the roller is set to be theta, and the requirement that the theta is 0< theta <500mrad is met.

Optionally, the outer periphery of the head part protrudes out of the end face of the roller body, and the protruding distance is h5, which satisfies 50 μm ≧ h5 ≧ 0 μm.

Optionally, the main body of the inner liner includes a support portion in a straight cylinder shape, and one end of the support portion is connected to one side surface of the head portion.

Optionally, the supporting portions are provided as two axial sections, the main body further includes a compensation portion connected to the supporting portions, and the compensation portion is provided between the two supporting portions and used for compensating two ends of the inner liner.

Alternatively, the compensation portion is provided in at least one of a wave shape and an arc shape in an axial direction of the inner liner.

Optionally, the outer diameter of the compensation portion is smaller than the outer diameter of the support portion, and the inner diameter of the compensation portion is smaller than the inner diameter of the support portion.

According to another aspect of the present application, there is provided a pump body assembly comprising a roller assembly as described above.

According to a further aspect of the present application, there is provided a compressor comprising a roller assembly as described above or a pump body assembly as described above.

The present application provides a roller assembly comprising: the roller comprises a roller body and an inner lining layer, wherein the inner lining layer is made of an elastic material; the inner liner is arranged on the inner wall of the roller body along the radial direction of the roller.

The roller adopts the inner liner layer that sets up elastic material in this body and make, has elastic deformation and elastic compensation effect, changes the rigid contact of original accessory into elastic contact, just so can avoid the roller and upper and lower flange or baffle when taking place rigid contact, surface material is difficult for producing plastic deformation and breaking away from and destroying, effectively improves the unusual frictional wear problem of terminal surface.

Drawings

FIG. 1 is a schematic structural view of a pump body assembly according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a roller assembly according to an embodiment of the present application;

FIG. 3 is a schematic view of a stressed deformation of an inner liner according to an embodiment of the present application;

FIG. 4 is a schematic view of a stressed deformation of an inner liner according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a roller body according to an embodiment of the present application;

FIG. 6 is a schematic view of a liner layer construction according to an embodiment of the present application;

FIG. 7 is a schematic view of a construction of an innerliner layer in accordance with an embodiment of the present application;

FIG. 8 is a schematic view of a third construction of an innerliner layer in accordance with an embodiment of the present application;

fig. 9 is a fourth structural schematic diagram of the inner liner layer of the embodiment of the present application.

The reference numerals are represented as:

1. a crankshaft; 2. an upper flange; 3. a cylinder; 4. a lower flange; 5. a roller; 6. sliding blades; 51. a roller body; 52. an inner liner layer; 53. a head portion; 54. a support portion; 55. a compensation section; 56. a head end face; 57. and (4) a groove.

Detailed Description

Referring collectively to fig. 1-9, in accordance with an embodiment of the present application, a roller assembly includes:

a roller 5 including a roller body 51 and an inner liner 52, the inner liner 52 being made of an elastic material;

the lining layer 52 is arranged on the inner wall of the roller body 51 along the radial direction of the roller 5.

This application sets up the inner liner 52 that elastic material made inside roller body 51, because inner liner 52 has elasticity for whole roller 5 when the roller that the cover was established, roller body 51 can carry out elastic deformation along the axial, takes place rigid contact at roller body 51 and flange etc. and can change into roller 5 and join in marriage vice elastic contact, can effectively improve the unusual frictional wear problem of terminal surface.

The roller body 51 is of an annular structure, the lining layer 52 can be annular, and the outer wall of the lining layer is in contact with the inner wall of the roller body 51; the roller body 51 can be provided with a plurality of arc-shaped sections which are uniformly distributed on the inner wall of the roller body 51 along the circumferential direction of the inner wall of the roller body 51, so that the abrasion of the roller body 51 can be relieved.

In addition, the inner lining layer 52 is made of elastic material with low density, so that the total weight of the roller 5 can be reduced, and the power consumption of the compressor can be reduced.

In some embodiments, the lining layer 52 is provided in a ring shape, and is in an interference fit with the roller body 51.

Inner liner 52 establishes to cyclic annular, preparation and convenient assembling with roller body 51 interference fit for whole roller 5 stable in structure, better be have unsmooth complex limit structure between inner liner 52 outer wall and the roller body 51 inner wall, prevent to rotate the in-process dislocation. The outer diameter d1 of the inner liner 52 is not less than the inner diameter d6 of the roller body 51.

In some embodiments, the two ends of the lining layer 52 include head portions 53, the head portions 53 are provided in a ring plate structure, and the extension direction of the ring plate is the radial direction of the roller 5; the roller body 51 is provided with a groove 57 on an end surface thereof for receiving a portion of the head 53.

The two ends of the lining layer 52 are provided with annular plate structures, so that the axial structural strength of the lining layer 52 on the roller body 51 can be improved, and meanwhile, the axial length of the lining layer 52 can be longer than that of the roller body 51, so that the end face leakage can be effectively controlled.

The two side end faces of the roller 5 are provided with grooves 57 for placing the head 53, the depth h3 of each groove 57 is larger than the thickness h4 of the head 53, and the diameter d7 of each groove 57 is larger than the outer diameter d5 of the wedge-shaped end face of the head 53.

In some embodiments, the head 53 is obliquely disposed with its outer periphery away from the body of the liner 52; the included angle between the head 53 and the cross section of the roller 5 is set to theta, and 0< theta <500mrad is satisfied.

The head 53 is inclined so that the outer peripheral edge of the head 53 contacts the friction pair at both ends of the roller 5, and the leakage from the end surface of the roller 5 is reduced without increasing the frictional resistance.

The head 53 is designed to be a wedge-shaped end surface, and gradually decreases from the inner diameter to the outer diameter along the radial direction to form a convergent gap distribution with a matching auxiliary gap.

Under the action of radial pressure difference and circumferential shearing, fluid media flow into the wedge-shaped end face of the head 53 along the designed gap of the end face of the roller 5, the gap of the end face gradually converges along the flow direction, the fluid generates a significant dynamic pressure effect, the integral bearing capacity of an oil film is improved, the lubrication reliability is ensured, and the problem of oil film breakage caused by operation condition change or external disturbance in the working process is solved.

In some embodiments, the outer periphery of the head 53 protrudes beyond the end face of the roller body 51 by a distance h5, satisfying 50 μm.gtoreq.h 5.gtoreq.0 μm.

When abnormal abrasion occurs, the lining layer 52 contacts with the roller body 51 first, rigid contact of the original roller 5 matched pair is changed into elastic contact of the existing roller 5 matched pair, and elastic materials such as PTFE (polytetrafluoroethylene) and the like have smaller friction coefficient, so that the problem of abnormal friction and abrasion of the end face can be effectively solved.

The lining layer 52 protrudes out of the roller body 51, the height of a leakage channel is reduced, the stress of the end face and the gap distribution of the upper end face and the lower end face can be adjusted through the change of the wedge angle of the head 53, the roller 5 is in a stress self-balancing state, and the end face leakage is effectively controlled.

In some embodiments, the main body of the lining layer 52 includes a support portion 54 having a straight cylindrical shape, and one end of the support portion 54 is connected to one side surface of the head portion 53.

One end of the supporting portion 54 is connected to one side surface of the head portion 53, so that the head portion 53 can rotate slightly around the supporting portion 54 to adjust the wedge angle, and accordingly, the elastic compensation effect is achieved.

As shown in fig. 6, 8 and 9, the support portion 54 may be connected to the middle portion, inner circle side of the head portion 53, and all enable the head portion 53 to rotate slightly.

In some embodiments, the supporting portion 54 is provided as two axial segments, and the main body further includes a compensating portion 55 connected to the supporting portion 54, wherein the compensating portion 55 is provided between the two supporting portions 54 for compensating two ends of the lining layer 52.

Preferably, in the axial direction of the inner liner 52, the compensation portion 55 is provided with at least one of a wave shape and an arc shape, such as a wave shape shown in fig. 6 and an arc shape shown in fig. 7; the compensation effect can be achieved by combining the waveform and the arc.

If the wedge angle of the head 53 is changed and the stress cannot be balanced, the compensation function of the elastic deformation of the compensation part 55 in the lining layer 52 can effectively adjust the gap distribution of the upper end surface and the lower end surface of the roller 5, change the stress of the end surfaces to achieve a self-balancing state, further reduce the end surface leakage and reduce the direct contact friction and wear of the auxiliary end surfaces.

The compensating portion 55 is made of an elastic material, and responds to the axial compression when the upper and lower end surfaces are subjected to force changes, like the spring principle, so as to adjust the distance between the upper and lower end surfaces of the roller 5 and the mating surface. When the compensation part 55 is not deformed, the compensation part 55 is in a free state, a lubricating gap is reserved between the upper end surface and the lower end surface and the surfaces of the matching pair, when the compensation part is stressed, the upper end surface and the lower end surface are under the action of pressure, the compensation part 55 generates elastic deformation, and the size of the gap is adjusted.

In some embodiments, the outer diameter of the compensation portion 55 is smaller than the outer diameter of the support portion 54, and the inner diameter of the compensation portion 55 is smaller than the inner diameter of the support portion 54.

The size of the compensation part 55 is limited to be smaller than that of the support part 54, so that the deformation of the compensation part 55 is not influenced by the radial directions of the roller body 51 and the roller shaft, and the compensation effect is smoothly finished.

As shown in fig. 2, the compensation portion 55 has a wave-shaped structure and has an elastic compensation function, an outer diameter d1 of the compensation portion 55 is smaller than an outer diameter d2 of the supporting portion 54, and an inner diameter d3 of the compensation portion 55 is smaller than an inner diameter d4 of the supporting portion 54.

According to another aspect of the present application, there is provided a pump body assembly comprising a roller assembly as described above.

The pump body assembly shown in fig. 1 comprises a crankshaft 1, an upper flange 2, a cylinder 3, a lower flange 4, a roller 5 and a sliding sheet 6, wherein the roller 5 is sleeved on an eccentric part of the crankshaft 1, the roller 5 and the sliding sheet 6 are arranged in the cylinder 3, the upper flange 2 is arranged at the upper end of the cylinder 3, the lower flange 4 is arranged at the lower end of the cylinder 3, the roller 5 comprises a roller body 51 and an inner liner 52 which are annular, from one end face to the other end face, the inner liner 52 sequentially comprises a head part 53, a support part 54, a compensation part 55, a support part 54 and a head part 53, the compensation part 55 is symmetrically distributed, the inner liner 52 is made of an elastic material, and the support part 54 is connected with the head part 53 and the compensation part 55. The lining layer 52 is nested in the roller body 51, the outer circular surface of the supporting part 54 of the lining layer 52 is matched with the inner circular surface of the roller body 51, and the head part 53 is arranged in the grooves 57 on the two side end surfaces of the roller body 51. The inner surface of the inner layer is a cylindrical surface and is used for being matched with the crankshaft 1, and the outer surface of the roller body 51 is a cylindrical surface and is used for being matched with the cylinder 3 and the sliding sheet 6.

In the roller assembly structure shown in fig. 2, the roller 5 is formed by combining a roller body 51 and an inner liner 52, and the inner liner 52 is made of an elastic material, such as PTFE, and has elastic deformation and elastic compensation effects. The head 53 of the lining layer 52 adopts a wedge-shaped end surface design, the gap between the head 53 and the auxiliary is gradually reduced from the inner diameter to the outer diameter, the outer diameter of the end surface of the head 53 protrudes out of the end surface of the roller body 51, and the wedge-shaped surface of the head 53 can rotate slightly around the supporting part 54 to adjust the wedge-shaped angle; the compensation portion 55 has a structure of a wave-shaped knot, an arc shape, etc., and has an elastic compensation function.

According to a further aspect of the present application, there is provided a compressor comprising a roller assembly as described above or a pump body assembly as described above.

It is easily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.