CN-224214374-U - Spring mounting structure of scroll compressor and scroll compressor

CN224214374UCN 224214374 UCN224214374 UCN 224214374UCN-224214374-U

Abstract

The utility model relates to the technical field of scroll compressors, in particular to a spring mounting structure of a scroll compressor and the scroll compressor, wherein the spring mounting structure of the scroll compressor comprises a fixed disc assembly, and a fixed disc groove is formed in the top of the fixed disc assembly; the sealing device comprises a fixed disc groove, a sealing component, a spring and a limiting part, wherein the fixed disc groove is arranged on the upper side of the fixed disc groove, the sealing component can move along the vertical direction, the spring is arranged in the fixed disc groove, the limiting part is arranged between the sealing component and the fixed disc groove, and when the sealing component moves downwards to a limiting position, an accommodating space capable of accommodating the spring is formed between the fixed disc groove and the sealing component. The spring mounting structure of the scroll compressor and the scroll compressor can solve the problem that the springs are easy to lose effectiveness due to overlarge bearing stress in the existing scroll compressor.

Inventors

Chen Xiongpeng
YANG JIAXIANG

Assignees

广州博世舒适科技压缩机技术有限公司

Dates

Publication Date: 20260508
Application Date: 20250626

Claims (10)

1. A spring mounting structure of scroll compressor sets up in scroll compressor, its characterized in that, the spring mounting structure of scroll compressor includes: the top of the fixed disc assembly is provided with a fixed disc groove; The sealing component is arranged right above the fixed disc groove and can move along the vertical direction; a spring arranged in the groove of the fixed disk, and And the limiting part is arranged between the sealing assembly and the fixed disc groove, and when the sealing assembly moves downwards to the limit position, an accommodating space capable of accommodating the spring is formed between the fixed disc groove and the sealing assembly.
2. The spring mounting structure of a scroll compressor according to claim 1, wherein the restricting portion is a plurality of ring-shaped spacers disposed in the fixed disk groove, the spring is mounted on a side portion of the ring-shaped spacers in a radial direction, and when the seal assembly moves downward to a limit position, a lower end face of the seal assembly abuts against a top face of the ring-shaped spacers.
3. The spring mounting structure of a scroll compressor of claim 2, wherein the fixed disk groove is an annular groove, and a plurality of the annular pads are in interference fit with an inner wall surface of the fixed disk groove.
4. The spring mounting structure of a scroll compressor according to claim 1, wherein the limiting portion is a limiting step formed at a bottom of the fixed disk groove, the limiting step protrudes from a bottom surface of the fixed disk groove, the spring is disposed at a side portion of the limiting step, and when the seal assembly moves downward to a limit position, a lower end surface of the seal assembly abuts against a top surface of the limiting step.
5. The spring mounting structure of a scroll compressor according to claim 1, wherein the limiting portion is a plurality of arc-shaped cushion blocks, the plurality of arc-shaped cushion blocks are circumferentially arranged in the fixed disc groove, the springs are mounted on side portions of the arc-shaped cushion blocks, and when the seal assembly moves downward to a limit position, a lower end face of the seal assembly abuts against a top face of the arc-shaped cushion blocks.
6. The spring mounting structure of a scroll compressor according to claim 1, wherein the limiting portion is a limiting projection, the limiting projection is formed at the bottom of the sealing assembly, the limiting projection protrudes out of the lower end face of the sealing assembly, the spring and the limiting projection are staggered, and when the sealing assembly moves downwards to a limiting position, the bottom face of the limiting projection is abutted to the bottom of the fixed disc groove.
7. The spring mounting structure of a scroll compressor according to claim 1, wherein the restriction portion is an annular groove formed at a bottom of the seal assembly, the spring corresponding to a disposition position of the annular groove, the spring being located in the annular groove when the seal assembly moves downward to a limit position.
8. The spring mounting structure of a scroll compressor according to any one of claims 2 to 5, wherein a medium pressure chamber through hole is provided at a bottom of the fixed disk groove, and the restricting portion is provided so as to avoid the medium pressure chamber through hole.
9. The spring mounting structure of a scroll compressor as claimed in claim 8, wherein the limiting portion is formed with an arc-shaped notch corresponding to a disposition position of the medium pressure chamber through hole.
10. A scroll compressor comprising the spring mounting structure of the scroll compressor of any one of claims 1 to 9.

Description

Spring mounting structure of scroll compressor and scroll compressor Technical Field The application relates to the technical field of scroll compressors, in particular to a spring mounting structure of a scroll compressor and the scroll compressor. Background The low temperature heat pump scroll compressor consists of fixed scroll part and movable scroll part, and has the sealing cavity formed by the mutual engagement of the blades of the movable disc part and the fixed disc part, and the movable disc part has the small volume and thus fluid compressing effect. To separate the discharge chamber from the suction chamber fluid, the top of the stator is typically provided with a seal assembly to enable the compressor to operate properly. The sealing component is introduced with medium-pressure gas through the through hole of the back plate surface of the static plate, and the medium-pressure gas floats the sealing component to be in close contact with the silencing cover component so as to realize sealing. Because the low-temperature heat pump scroll compressor needs to work in cold areas, the lower evaporation temperature leads to lower medium-pressure gas pressure and can not float the sealing component to be closely contacted with the silencing cover component, and the separation of the exhaust cavity and the suction cavity gas can not be realized, so that the low-temperature heat pump scroll compressor can not work normally. In this case, the sealing assembly is required to be in close contact with the muffler cover assembly with the aid of the spring, and thus, the low temperature heat pump scroll compressor has a high requirement for reliability of the spring. In prior designs, the springs are generally disposed in a recess in the stationary plate, which is located in the lower portion of the seal assembly. When the scroll compressor stops running, high-pressure gas can push the scroll plate to reversely rotate due to higher pressure in the compression cavity, so that a vacuum phenomenon occurs in the medium-pressure cavity, and the sealing assembly moves downwards rapidly. Because no seal assembly limiting structure is arranged in the existing compressor structure, the spring can be extruded by the seal assembly, so that the stress born by the spring is far beyond the design stress range of the spring, the fatigue life of a spring material can be obviously shortened after the spring is repeatedly extruded for many times, the high stress can accelerate the generation and the expansion of fatigue cracks, finally the fatigue fracture of the spring is caused, and the compressor cannot work normally after the spring fails. Disclosure of utility model In view of the above, an object of the present application is to provide a spring mounting structure of a scroll compressor and a scroll compressor, which are used for solving the problem that a conventional scroll compressor is prone to failure due to excessive stress to which a spring is subjected. According to a first aspect of the utility model, a spring mounting structure of a scroll compressor is provided, wherein the spring mounting structure of the scroll compressor comprises a fixed disc assembly, a sealing assembly, a spring and a limiting part, wherein the fixed disc assembly is provided with a fixed disc groove at the top part of the fixed disc assembly, the sealing assembly is arranged right above the fixed disc groove and can move along the vertical direction, the spring is arranged in the fixed disc groove, the limiting part is arranged between the sealing assembly and the fixed disc groove, and when the sealing assembly moves downwards to a limiting position, a containing space capable of containing the spring is formed between the fixed disc groove and the sealing assembly. Preferably, the limiting part is a plurality of annular cushion blocks, the annular cushion blocks are arranged in the fixed disc groove, the springs are arranged on the radial side parts of the annular cushion blocks, and when the sealing assembly moves downwards to the limit position, the lower end face of the sealing assembly is abutted to the top face of the annular cushion blocks. Preferably, the fixed disc groove is an annular groove, and the annular cushion blocks are in interference fit with the inner wall surface of the fixed disc groove. Preferably, the limiting part is a limiting step, the limiting step is formed at the bottom of the fixed disc groove, the limiting step protrudes out of the bottom surface of the fixed disc groove, the spring is arranged at the side part of the limiting step, and when the sealing assembly moves downwards to the limiting position, the lower end surface of the sealing assembly is abutted with the top surface of the limiting step. Preferably, the restriction portion is a plurality of arc cushion, and a plurality of arc cushion is in along circumference direction arranges in the fixed disk recess, the spring is installed the lateral pa