CN219061993U

CN219061993U - Scroll compressor with novel floating seal supporting structure

Info

Publication number: CN219061993U
Application number: CN202223374510.4U
Authority: CN
Inventors: 秦佳
Original assignee: Suzhou Yinghuate Vortex Technology Co ltd
Current assignee: Suzhou Yinghuate Vortex Technology Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-05-23
Anticipated expiration: 2032-12-15

Abstract

The utility model discloses a scroll compressor with a novel floating seal supporting structure, which comprises a main bearing seat, wherein a seal groove is arranged in the main bearing seat and is circular, and the end part of the main bearing seat is provided with an axial seal; the floating ring is provided with a supporting rib at one side, the supporting rib points to the main bearing seat, the supporting rib is provided with a plurality of air guide grooves, and the floating ring floats up and down in the sealing groove; the movable disc is arranged above the floating ring and floats up and down together with the floating ring, and a back pressure hole is arranged in the movable disc to provide back pressure gas for the compressor; and the static disc is connected with the main bearing seat and is tightly attached to the movable disc. According to the utility model, through the design of the main bearing seat and the floating ring structure, the elastic auxiliary support around the sealing ring is eliminated, the air guide groove structure is added on the floating ring, the stability of the floating ring during the working of the compressor is improved, the working efficiency is improved, and the problem of the assembly error of the sealing ring and the auxiliary support during the assembly is solved.

Description

Scroll compressor with novel floating seal supporting structure

Technical Field

The utility model belongs to the technical field of compressors, and particularly relates to a vortex compressor with a novel floating seal support structure.

Background

The scroll compressor is a compressor with compressible volume comprising one fixed involute scroll and one eccentric orbiting scroll. With the development of industry and the improvement of life quality, people pay more and more attention to efficiency, noise, energy consumption and the like, and the scroll compressor is widely applied to systems in industry due to the advantages of low noise, high efficiency, small volume, low vibration and the like.

The prior application number is CN202123119426.3, the name is a floating movable disk mechanism and a compressor comprising the floating movable disk mechanism, the sealing part consists of a plurality of floating grooves and elastic supporting parts, the structure is complex, and the elastic supporting parts consist of a plurality of elastic parts, so that the assembly process is complex, the efficiency is low, and the assembly error is also frequently caused in the assembly process.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a vortex compressor with a novel floating seal supporting structure.

The utility model discloses a vortex compressor with a novel floating seal supporting structure, which comprises a main bearing seat, wherein a seal groove is arranged in the main bearing seat, the seal groove is circular, and the end part of the main bearing seat is provided with an axial seal; the floating ring is provided with a supporting rib at one side, the supporting rib points to the main bearing seat, the supporting rib is provided with a plurality of air guide grooves, and the floating ring floats up and down in the sealing groove; the movable disc is arranged above the floating ring and floats up and down together with the floating ring, and a back pressure hole is arranged in the movable disc to provide back pressure gas for the compressor; and the static disc is connected with the main bearing seat and is tightly attached to the movable disc.

According to the utility model, through the design of the main bearing seat and the floating ring structure, the elastic auxiliary support around the sealing ring is eliminated, and the air guide groove structure is added on the floating ring, so that the stability of the floating ring during working of the compressor is improved, the working efficiency is improved, the problem of incorrect assembly of the sealing ring and the auxiliary support during assembly is solved, and the production efficiency is improved.

Further, the back pressure hole passes through the inner cavity of the movable disc and is communicated with the cavity of the static disc.

Through adopting above-mentioned scheme, the back pressure hole acts on the movable plate through back pressure intracavity gas to come balanced back pressure chamber and compression chamber between the pressure, thereby ensure the high-efficient steady operation of movable plate, quiet dish.

Further, a sealing ring is arranged on one side, close to the supporting rib, of the sealing groove, and the sealing ring is in elastic contact with the floating ring.

By adopting the scheme, the sealing ring enhances the tightness between the floating ring and the main bearing seat, and is subjected to internal pressure in the operation process, the sealing ring is tightly attached to the floating ring and the sealing groove in a large diameter to form a seal, and meanwhile, the sealing ring can avoid overturning the floating ring in the process of supporting the starting disc by back pressure.

Further, the floating ring is matched with the sealing groove in shape.

By adopting the scheme, the floating ring floats up and down in the sealing groove under the action of pressure, and the stability and the sealing performance during floating can be improved due to shape matching.

Further, the height of the floating ring is smaller than the depth of the sealing groove, and a gap is reserved between the supporting rib and the bottom of the sealing groove.

By adopting the scheme, the clearance between the supporting rib and the bottom of the sealing groove can support the movable disc and the floating disc to float freely up and down, so that the main bearing seat and the floating ring are prevented from being damaged due to friction.

Further, the air guide grooves are uniformly distributed on the supporting ribs, and the depth of each air guide groove is smaller than the height of each supporting rib.

By adopting the scheme, the gap between the floating ring and the main bearing seat is tiny, so that the gas flow can be blocked, and the gas pouring groove is formed, so that the gas smoothly enters the other side of the supporting rib to generate upward buoyancy.

Further, the axial seal adopts a shaft seal, and the shaft seal, the movable disc, the floating ring, the sealing ring and the main bearing seat form a pressure cavity, so that the movable disc is in a floating state in the running process and is tightly attached to the static disc.

By adopting the scheme, the shaft seal has reliable sealing performance, rarely causes leakage in long-term use, improves the sealing performance of a sealing cavity, and also improves the stability of the movable disc and the floating ring when floating.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic view of the location of a main bearing housing, floating ring, and seal ring of a scroll compressor;

FIG. 2 is a schematic view of a main bearing housing of the scroll compressor;

FIG. 3 is a schematic view of the floating ring structure of the scroll compressor;

FIG. 4 is a schematic view of a scroll compressor having a novel floating seal support structure;

fig. 5 is a cross-sectional view of a scroll compressor.

Wherein reference numerals are as follows: the device comprises a static disc 1, a movable disc 2, a floating ring 3, a main bearing seat 4, a sealing ring 5, a sealing groove 6, a shaft seal 7, a set screw 8, an eccentric shaft 9, a compression cavity 10, a back pressure hole 21, a support rib 31, an air guide groove 32 and a gap A.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model discloses a sealing support structure of a floating ring 3 of a scroll compressor, which is shown in figures 1-5, and comprises a main bearing seat 4, wherein a sealing groove 6 is arranged in the main bearing seat 4, the sealing groove 6 is circular, and the end part of the main bearing seat 4 is provided with an axial seal; the floating ring 3, wherein a supporting rib 31 is arranged on one side of the floating ring 3, the supporting rib 31 points to the main bearing seat 4, a plurality of air guide grooves 32 are arranged on the supporting rib 31, and the floating ring 3 floats up and down in the sealing groove 6; the movable disc 2 is arranged above the floating ring 3 and floats up and down together with the floating ring 3, and a back pressure hole 21 is arranged in the movable disc 2 to provide back pressure gas for the compressor; the static disc 1 is arranged above the main bearing, is connected with the main bearing seat 4 through a set screw 8 and is tightly attached to the movable disc 2.

The sealing support structure has the beneficial effects that:

firstly, seal groove 6 is circular, removes the profile of tooth elasticity auxiliary stay in the outside, adopts single sealing washer 5 to realize gaseous sealed and auxiliary stay power, has improved the leakproofness and the stability of cavity to can make the discrete holding power in circumference change continuous holding power into, the system is more reliable.

Secondly, in the aspect of assembly, the process is simpler, and because the elastic auxiliary support in the sealing ring 5 is smaller, the error probability of the product during assembly is reduced, and the reliability of the product is improved.

Third, the air guide grooves 32 are provided to allow air to smoothly enter the other side of the support rib 31, thereby generating upward buoyancy.

In some embodiments of the present utility model, the back pressure hole 21 communicates with the cavity of the stationary plate 1 through the internal cavity of the movable plate 2.

The beneficial effects of this embodiment lie in: the back pressure hole 21 acts on the movable disc 2 through the gas in the back pressure cavity, so that the pressure between the back pressure cavity and the compression cavity is balanced, and the efficient and stable operation of the movable disc 2 and the static disc 1 is ensured; in the event of a hydraulic shock or overload, the pressure in the scroll is greater than the back pressure, the floating disc 2 is lowered and the pressure in the scroll is relieved to protect the compressor.

In some embodiments of the present utility model, a sealing ring 5 is disposed on one side of the sealing groove 6 near the supporting rib 31, and the sealing ring 5 is a single sealing ring 5, and is elastically contacted with the floating ring 3, and slightly interferes with the large diameter of the sealing groove 6 in the main bearing housing 4 under the action of pressure.

The beneficial effects of this embodiment lie in: the sealing ring 5 enhances the tightness between the floating ring 3 and the main bearing seat 4, and in the running process, the sealing ring 5 is tightly attached to the floating ring 3 and the sealing groove 6 in a large diameter to form a seal, and meanwhile, the sealing ring 5 can avoid overturning the floating ring 3 in the process of backing pressure supporting the starting disc 2.

In some embodiments of the present utility model, floating ring 3 is shaped to match seal groove 6, floating ring 3 floating up and down in seal groove 6.

The beneficial effect of this embodiment lies in that floating ring 3 floats from top to bottom in seal groove 6 under the effect of pressure, and shape matching can improve stability and leakproofness when floating, and floating ring 3 is in the compression volume that reasonable sealed throughout in the upper and lower floating process, and upper and lower two sides form the terminal surface and seal to provide axial auxiliary support counter-force.

In some embodiments of the present utility model, the height of floating ring 3 is less than the depth of seal groove 6, so that floating ring 3 enters seal groove 6, leaving a gap a between support rib 31 and the bottom of seal groove 6.

The beneficial effects of this embodiment lie in: the clearance A between the supporting rib 31 and the bottom of the sealing groove 6 can support the movable disc 2 and the floating disc 2 to freely float up and down, so that the main bearing seat 4 and the floating ring 3 are prevented from being damaged due to friction.

In some embodiments of the present utility model, the air guide grooves 32 are uniformly distributed on the supporting ribs 31, and can be adjusted according to actual requirements, and the depth of the air guide grooves 32 is smaller than the height of the supporting ribs 31, so as to ensure the strength and sealing performance of the floating ring 3.

The beneficial effects of this embodiment lie in: the gas enters the other side of the supporting rib 31 through the gap between the floating ring 3 and the main bearing seat 4, and the gas flow is slightly blocked by the gap, so that the gas guide groove 32 is formed, the gas smoothly enters the other side of the supporting rib 31, and upward buoyancy is generated to drive the floating ring 3 to float.

In some embodiments of the present utility model, the axial seal adopts a shaft seal 7, and the shaft seal 7 forms a pressure cavity with the movable disc 2, the floating ring 3, the sealing ring 5 and the main bearing seat 4, so that the movable disc 2 is in a floating state during operation and is tightly attached to the static disc 1.

The beneficial effects of this embodiment lie in: the shaft seal 7 has reliable sealing performance, and rarely leaks in long-term use, so that the sealing performance of a sealing cavity is improved, and the stability of the movable disc 2 and the floating ring 3 during floating is also improved.

The working principle of the utility model is as follows: the eccentric shaft 9 drives the movable disc 2 to rotate, and the movable disc 2 is matched with the static disc 1 fixed on the frame to complete the working processes of air suction, compression and air discharge, and the movable disc 2 is driven by the eccentric shaft 9 and restrained by the anti-rotation mechanism to rotate around the base circle center of the static disc 1 in a plane with a small radius. The air is sucked into the periphery of the static disc 1 through the air filter element, and is gradually compressed in a plurality of crescent compression cavities 10 formed by the dynamic disc 2 and the static disc 1 along with the rotation of the eccentric shaft 9, and then is continuously discharged from the axial hole of the central part of the static disc 1.

In the running process of the compressor, if the pressure at the bottom of the movable disc 2 is greater than the pressure in the compression cavity 10, the floating ring 3 floats upwards to drive the movable disc 2 to press the static disc 1; when the pressure of the compression cavity 10 is larger than that of the back pressure cavity, the movable disc 2 is separated from the static disc 1, so that the floating ring 3 is driven to descend for pressure relief to protect the movable disc 2 and the static disc 1.

While the basic principles and main features of the present utility model and advantages of the present utility model have been shown and described, it will be understood by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which are described in the foregoing specification merely illustrate the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined in the appended claims and their equivalents.

Claims

1. A scroll compressor having a novel floating seal support structure, comprising:

the main bearing seat (4), wherein a sealing groove (6) is arranged in the main bearing seat (4), the sealing groove (6) is circular, and the end part of the main bearing seat (4) is provided with an axial seal;

the floating ring (3), one side of the floating ring (3) is provided with a supporting rib (31), the supporting rib (31) points to the main bearing seat (4), the supporting rib (31) is provided with a plurality of air guide grooves (32), and the floating ring (3) floats up and down in the sealing groove (6);

the movable disc (2) is arranged above the floating ring (3) and floats up and down together with the floating ring (3), and a back pressure hole (21) is arranged in the movable disc (2) to provide back pressure gas for the compressor;

the static disc (1), static disc (1) is connected with main bearing frame (4), closely laminates with movable disc (2).

2. The scroll compressor with the novel floating seal support structure according to claim 1, wherein the back pressure hole (21) passes through the inner cavity of the movable disc (2) to be communicated with the cavity of the fixed disc (1).

3. The scroll compressor with the novel floating seal support structure according to claim 1, wherein a sealing ring (5) is arranged on one side of the sealing groove (6) close to the supporting rib (31), and the sealing ring (5) is in elastic contact with the floating ring (3).

4. A scroll compressor with a novel floating seal support structure according to claim 1, characterized in that the floating ring (3) is shaped to match the seal groove (6).

5. The scroll compressor with the novel floating seal support structure according to claim 1, wherein the height of the floating ring (3) is smaller than the depth of the sealing groove (6), and a gap (a) is reserved between the supporting rib (31) and the bottom of the sealing groove (6).

6. The scroll compressor with the novel floating seal support structure according to claim 1, wherein the air guide grooves (32) are uniformly distributed on the support ribs (31), and the depth of the air guide grooves (32) is smaller than the height of the support ribs (31).

7. The scroll compressor with the novel floating seal support structure according to claim 1, wherein the axial seal is a shaft seal (7), and the shaft seal (7) forms a pressure cavity with the movable disc (2), the floating ring (3), the sealing ring (5) and the main bearing seat (4), so that the movable disc (2) is in a floating state in the running process and is tightly attached to the static disc (1).