CN216812142U - Static vortex with exhaust check valve structure and vortex compressor - Google Patents

Abstract

The utility model relates to the technical field of a fixed vortex of a scroll compressor, in particular to a fixed vortex with an exhaust check valve structure and a scroll compressor, wherein the fixed vortex comprises an end plate, the front surface of the end plate is provided with a vortex coiled in a vortex shape, the vortex forms a vortex cavity, the central part of the end plate is sequentially provided with an exhaust hole and an exhaust check valve structure in a penetrating way along the direction far away from the vortex, and the exhaust check valve structure comprises an exhaust check cavity, a stop piece fixed in the exhaust check cavity and a check valve plate movably arranged in the exhaust check cavity; the central part of the vortex cavity is sequentially communicated with the exhaust hole and the exhaust check cavity, and the exhaust check cavity is communicated with the space where the back of the end plate is located; the check valve plate can move up and down between the stop piece and the vent hole outlet; the utility model has simple structure and effectively prevents the problems of reverse rotation of the compressor and generation of very loud noise caused by refrigerant backflow when the compressor is stopped in the running process.

Description

Static vortex with exhaust check valve structure and vortex compressor

Technical Field

The utility model relates to the technical field of a fixed scroll of a scroll compressor, in particular to a fixed scroll with an exhaust check valve structure and a scroll compressor.

Background

The scroll compressor comprises a movable scroll, a fixed scroll, a driving shaft, a bearing seat, a shell and other components, wherein the movable scroll and the fixed scroll form a compression mechanism and are respectively provided with a scroll and an end plate, and the movable scroll and the fixed scroll are matched to form a compression cavity for compressing working fluid; the drive shaft drives the movable scroll to perform a translational motion relative to the fixed scroll, and compresses a working fluid, which is usually a gas, in a compression chamber by a relative motion between the lap of the movable scroll and the lap of the fixed scroll, and the compressed high-pressure gas is discharged through a discharge hole provided in an end plate of the fixed scroll, and in order to prevent the discharged high-pressure gas from flowing back to the discharge hole, a check valve is usually installed on the discharge hole.

For example, patent document No. CN113007094A discloses a fixed scroll with a function of an exhaust check valve, which includes an end plate, scroll teeth disposed on the front surface of the end plate, and an exhaust hole disposed in the middle of the end plate, the back of the end plate is provided with an exhaust check valve device, the exhaust check valve device includes at least two positioning bolts and an exhaust valve plate, the positioning bolts include at least two positioning bolts and are uniformly arranged along the periphery of the exhaust hole, the tail end of the positioning bolt is fixedly connected to the back of the end plate, the edge of the exhaust valve plate corresponding to the positioning bolt is provided with an exhaust valve plate through hole and is movably mounted on the positioning bolt, so that the exhaust valve plate can move upward along the positioning bolt to open the exhaust hole or move downward to close the exhaust hole; in the above patent document, the exhaust valve plate is mounted on the outer side of the end plate of the fixed scroll, and two positioning bolts are required to fix the exhaust valve plate to the fixed scroll, the structure of the exhaust check valve device is complex, and the number of parts is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the utility model provides a quiet vortex and a scroll compressor with exhaust check valve structure to solve among the prior art at the end plate outside installation exhaust valve piece of the quiet vortex, and the structure of exhaust check valve device is complicated, the more problem of part quantity.

The technical scheme of the utility model is as follows: the fixed vortex comprises an end plate, wherein a scroll which is coiled in a scroll shape is arranged on the front surface of the end plate, a scroll cavity is formed in the scroll, the central part of the end plate is sequentially provided with an exhaust hole and an exhaust check valve structure in a penetrating manner along the direction far away from the scroll, and the exhaust check valve structure comprises an exhaust check cavity, a stop piece fixed in the exhaust check cavity and a check valve plate movably arranged in the exhaust check cavity; the central part of the vortex cavity is sequentially communicated with the exhaust hole and the exhaust check cavity, and the exhaust check cavity is communicated with the space where the back surface of the end plate is located; the area of check valve piece is greater than the cross-sectional area in hole of exhausting, the check valve piece can reciprocate between the export of stopper and the hole of exhausting, the gas of vortex cavity flows to the space at end plate back place through exhausting hole, exhaust check cavity when the check valve piece upwards moves, the check valve piece closes the hole of exhausting when moving downwards.

Preferably, the exhaust check cavity comprises a cylindrical first cavity and a plurality of second cavities which are uniformly distributed around the first cavity by taking the edge of the first cavity as a starting point; the first chamber is communicated with the plurality of second chambers, and the vertical heights of the first chamber and the second chambers are the same.

Preferably, an annular clamping groove is horizontally and outwards formed in the inner wall of the end plate body, which is formed by the first cavity, the stop piece is clamped in the annular clamping groove, and the annular clamping groove is integrally horizontal; the check valve plate is movably arranged in the first cavity.

Preferably, the stopper is a C-shaped circlip.

Preferably, the stop part is the snap ring, the snap ring includes annular portion, sets up a plurality of landing legs just up on annular portion along annular portion circumference, every the tip that annular portion was kept away from to the landing leg all is equipped with the turn, the snap ring passes through the turn and blocks admittedly mutually with annular draw-in groove.

Preferably, the check valve plate is in a disc shape, and the diameter of the check valve plate is smaller than that of the first cavity and larger than that of the inner ring of the elastic retainer ring or the annular part.

Preferably, each of the second chambers has a meniscus shape in cross section, and the number of the second chambers is three.

The utility model also provides a technical scheme that the scroll compressor comprises a shell and a scroll disc assembly arranged in the shell, wherein the scroll disc assembly comprises a static scroll and a movable scroll, a high-pressure chamber is arranged above the static scroll in the shell, the static scroll is the static scroll with the exhaust check valve structure, the space on the back of an end plate of the static scroll is the high-pressure chamber, and the exhaust check chamber is communicated with the high-pressure chamber; the check valve plate can enable the exhaust hole of the static vortex to be communicated with the high-pressure cavity when moving upwards, and the check valve plate can enable the exhaust hole of the static vortex to be not communicated with the high-pressure cavity when moving downwards.

Compared with the prior art, the utility model has the advantages that:

the utility model is provided with an exhaust hole and an exhaust check valve structure which sequentially penetrate through the central part of an end plate of a static vortex along the direction far away from a scroll, wherein the exhaust check valve structure comprises an exhaust check cavity, a stop piece fixed in the exhaust check cavity and a check valve plate movably arranged in the exhaust check cavity; the utility model has simple structure, and effectively prevents the problems of the reverse rotation of the compressor and the generation of very loud noise caused by the backflow of the refrigerant when the compressor is stopped in the running process; compared with the structure that the exhaust check valve is installed on the outer side of the end plate of the fixed scroll in the prior art, the structure of the exhaust check valve is arranged in the end plate of the fixed scroll and is not fixed by screws, and the structure is simpler.

Drawings

The utility model is further described with reference to the following figures and examples:

FIG. 1 is a schematic view of a non-orbiting scroll with a discharge check valve configuration according to one embodiment;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic structural diagram of a portion of a non-orbiting scroll with an exhaust check valve structure according to an embodiment after a circlip and a check valve plate are hidden in the non-orbiting scroll;

FIG. 4 is an enlarged view of the structure at B in FIG. 3;

FIG. 5 is a schematic view of a top view of a non-orbiting scroll with an exhaust check valve structure according to an embodiment, in which an elastic check ring and a check valve plate are hidden;

FIG. 6 is an enlarged view of the structure at C in FIG. 5;

FIG. 7 is a top view schematic illustration of a non-orbiting scroll with a discharge check valve configuration according to one embodiment;

FIG. 8 is an enlarged view of the structure of FIG. 7 at D;

FIG. 9 is a schematic cross-sectional view taken along line A-A in FIG. 7;

FIG. 10 is an enlarged view of E in FIG. 9;

FIG. 11 is a schematic structural view illustrating a vent hole closed by the circlip according to the first embodiment;

FIG. 12 is a schematic cross-sectional view taken along line B-B in FIG. 7;

FIG. 13 is an enlarged view of the structure of FIG. 12 at F;

FIG. 14 is a schematic structural view of the circlip and the check valve plate according to the first embodiment;

FIG. 15 is a schematic cross-sectional view of a scroll compressor according to an embodiment;

FIG. 16 is a schematic structural view of a snap ring according to the second embodiment;

FIG. 17 is a schematic view of a non-orbiting scroll with a discharge check valve structure according to the second embodiment;

FIG. 18 is an enlarged view of the structure of FIG. 17 at G;

FIG. 19 is a top view schematic illustration of a non-orbiting scroll with a discharge check valve configuration according to a second embodiment;

FIG. 20 is an enlarged view of the structure of FIG. 19 at H;

FIG. 21 is a schematic cross-sectional view taken at C-C in FIG. 19;

fig. 22 is an enlarged schematic view of the structure at I in fig. 21.

Wherein: 1. the non-orbiting scroll comprises a non-orbiting scroll, 2, an end plate, 3, a scroll, 4, a scroll chamber, 5, an exhaust hole, 6, an exhaust check valve structure, 61, an exhaust check chamber, 611, a first chamber, 612, a second chamber, 62, an elastic retainer ring, 63, a check valve plate, 7, an annular clamping groove, 8, a shell, 9, an orbiting scroll, 10, a high-pressure chamber, 11, a scroll compression chamber, 12, a clamping ring, 121, an annular part, 122, support legs, 123 and a bent part.

Detailed Description

The present invention will be further described in detail with reference to the following specific examples:

in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example one

In one embodiment, the stop is a C-shaped circlip.

As shown in fig. 1-14, the fixed scroll 1 with the exhaust check valve structure includes an end plate 2, a scroll 3 coiled in a scroll shape is disposed on the front surface of the end plate 2, the scroll 3 forms a scroll chamber 4, an exhaust hole 5 and an exhaust check valve structure 6 sequentially penetrate through the center of the end plate 2 along a direction away from the scroll 3, and the exhaust check valve structure 6 includes an exhaust check chamber 61, a stopper fixed inside the exhaust check chamber 61, and a check valve plate 63 movably disposed inside the exhaust check chamber 61; the central part of the vortex cavity 4 is sequentially communicated with the exhaust hole 5 and the exhaust check cavity 61, and the exhaust check cavity 61 is communicated with the space on the back of the end plate 2; the area of the check valve plate 63 is larger than the cross section area of the exhaust hole 5, and the check valve plate 63 can fully cover the exhaust hole 5; the check valve plate 63 can move up and down between the stop piece and the outlet of the exhaust hole 5, when the check valve plate 63 moves upwards, the gas of the vortex cavity 4 flows to the space of the back of the end plate 2 through the exhaust hole 5 and the exhaust check cavity 61, and when the check valve plate 63 moves downwards, the exhaust hole 5 is closed.

The exhaust check chamber 61 includes a first chamber 611 having a cylindrical shape, and a plurality of second chambers 612 uniformly distributed around the first chamber 611 with the edge of the first chamber 611 as a starting point; the first chamber 611 is communicated with the plurality of second chambers 612, and the vertical heights of the first chamber and the second chambers are the same; in this embodiment, the cross section of each second chamber 612 is a meniscus shape, and the number of the second chambers 612 is three; the cross-sectional shape of the second chamber 612 may be other shapes, and the number of the shapes may be set as required, which is not limited herein.

In this embodiment, as shown in fig. 14, the stopper is a C-shaped circlip 62; an annular clamping groove 7 is horizontally and outwards formed in the inner wall of the end plate 2 body formed by the first cavity 611, the elastic retainer ring 62 is clamped in the annular clamping groove 7, and the annular clamping groove 7 is horizontal as a whole; the check valve plate 63 is movably arranged in the first cavity 611; the elastic retainer ring 62 is convenient for generating elastic deformation towards the inner direction of the ring, so that the elastic retainer ring 62 is placed into the ring-shaped clamping groove 7, and the elastic retainer ring 62 is restored to elastic deformation after being placed into the ring-shaped clamping groove 7, so that the elastic retainer ring 62 is clamped and fixed in the ring-shaped clamping groove 7.

The check valve plate 63 is in a shape of a circular disc, and the diameter of the check valve plate 63 is smaller than the diameter of the first cavity 611 and larger than the diameter of the inner ring of the elastic check ring 62, so that the check valve plate 63 can move up and down in the first cavity 611 and the elastic check ring 62 limits the upward movement stroke of the check valve plate 63.

The technical scheme also provided in the embodiment is a scroll compressor, as shown in fig. 15, which includes a housing 8 and a scroll assembly installed in the housing 8, wherein the scroll assembly includes a non-orbiting scroll 1 and an orbiting scroll 9, and a scroll wrap of the orbiting scroll 9 is engaged with a scroll wrap 3 of the non-orbiting scroll 1 to form a scroll compression chamber 11; a high-pressure chamber 10 is arranged above the static vortex 1 in the shell 8, the static vortex 1 is the static vortex 1 with the exhaust check valve structure 6, the space on the back of the end plate 2 of the static vortex 1 is the high-pressure chamber 10, and the exhaust check chamber 61 is communicated with the high-pressure chamber 10; when the check valve plate 63 moves upward, the exhaust hole 5 of the fixed scroll 1 is communicated with the high-pressure chamber 10, and when the check valve plate 63 moves downward, the exhaust hole 5 of the fixed scroll 1 is not communicated with the high-pressure chamber 10.

When the scroll compressor in the embodiment operates, refrigerant gas enters the scroll compression cavity 11 through the air suction port of the scroll compressor, and the main shaft of the scroll compressor drives the movable scroll 9 to rotate around the base circle of the fixed scroll 1 to compress the refrigerant gas; as shown in fig. 10, during the exhaust, the refrigerant gas pushes the check valve plate 63 upward against the elastic retainer ring 62, and the whole refrigerant gas flows into the high-pressure chamber 10 from the central part of the scroll chamber 4, the exhaust hole 5 and the exhaust check chamber 61 after being compressed, and is finally discharged to the outside of the scroll compressor; when the scroll compressor is stopped, as shown in fig. 11, the check valve plate 63 returns to the gas discharge hole 5 under the action of the backflow gas and its own weight to seal the gas backflow passage, and thus, the gas backflow prevention function is achieved in the scroll compression chamber 11.

Example two

The difference between the second embodiment and the first embodiment is that the stop member is a snap ring 12.

As shown in fig. 16-22, referring to fig. 16 in detail, the snap ring 12 includes an annular portion 121, and a plurality of upward legs 122 disposed on the annular portion 121 along the circumferential direction of the annular portion 121, wherein the legs 122 are made of an elastic material; the end part of each supporting leg 122 far away from the annular part 121 is provided with a bent part 123, and the clamping ring 12 is clamped and fixed with the annular clamping groove 7 through the bent part 123; in this embodiment, the number of the supporting legs 122 is three, which is the same as the number of the annular grooves 7; the diameter of the check valve plate 63 is smaller than the diameter of the first chamber 611 and larger than the inner ring diameter of the annular portion 121; as shown in fig. 22, the check valve plate 63 can move up and down between the annular portion 121 of the snap ring 12 and the outlet of the exhaust hole 5, so that the exhaust hole 5 of the fixed scroll 1 is communicated with the high-pressure chamber 10 when the check valve plate 63 moves up, and the exhaust hole 5 of the fixed scroll 1 is not communicated with the high-pressure chamber 10 when the check valve plate 63 moves down; when the snap ring 12 is used, the leg 122 with the bent part 123 is clamped and fixed in the annular groove 7.

The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that the present embodiments be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (8)

1. The utility model provides a quiet vortex with exhaust check valve structure, quiet vortex (1) is including end plate (2), be equipped with on end plate (2) openly and be the scrollwork (3) that the vortex form coiled, scrollwork (3) are formed with vortex cavity (4), its characterized in that: the central part of the end plate (2) is sequentially provided with an exhaust hole (5) and an exhaust check valve structure (6) in a penetrating manner along a direction far away from the scroll (3), and the exhaust check valve structure (6) comprises an exhaust check chamber (61), a stop piece fixed in the exhaust check chamber (61) and a check valve plate (63) movably arranged in the exhaust check chamber (61); the central part of the vortex cavity (4) is sequentially communicated with the exhaust hole (5) and the exhaust check cavity (61), and the exhaust check cavity (61) is communicated with the space where the back of the end plate (2) is located; the area of check valve piece (63) is greater than the cross-sectional area of exhausting hole (5), check valve piece (63) can reciprocate between the export of stopper and exhaust hole (5), the gaseous of vortex cavity (4) flows to end plate (2) back place space through exhausting hole (5), exhaust check cavity (61) when check valve piece (63) rebound, will exhaust hole (5) and seal when check valve piece (63) lapse.

2. The non-orbiting scroll with a discharge check valve configuration as claimed in claim 1, wherein: the exhaust check cavity (61) comprises a first cavity (611) in a cylindrical shape and a plurality of second cavities (612) which are uniformly distributed around the first cavity (611) by taking the edge of the first cavity (611) as a starting point; the first chamber (611) is communicated with a plurality of second chambers (612) and the vertical heights of the first chamber and the second chambers are the same.

3. The non-orbiting scroll with a discharge check valve configuration as claimed in claim 2, wherein: an annular clamping groove (7) is horizontally and outwards formed in the inner wall of the end plate (2) body, which is formed by the first cavity (611), the stop piece is clamped in the annular clamping groove (7), and the annular clamping groove (7) is horizontal as a whole; the check valve plate (63) is movably arranged in the first cavity (611).

4. A non-orbiting scroll with a discharge check valve configuration as claimed in claim 3, wherein: the stop piece is a C-shaped elastic retainer ring (62).

5. The non-orbiting scroll with a discharge check valve configuration of claim 3, wherein: the stop part is snap ring (12), snap ring (12) include annular portion (121), set up on annular portion (121) and a plurality of landing legs (122) up along annular portion (121) circumference, every the tip that annular portion (121) were kept away from in landing leg (122) all is equipped with curved portion (123), snap ring (12) are blocked admittedly mutually with ring groove (7) through curved portion (123).

6. The non-orbiting scroll with a discharge check valve structure as claimed in claim 4 or 5, wherein: the check valve plate (63) is in a disc shape, and the diameter of the check valve plate (63) is smaller than that of the first cavity (611) and larger than the inner ring diameter of the elastic retainer ring (62) or the annular part (121).

7. The non-orbiting scroll with a discharge check valve configuration as claimed in claim 2, wherein: each second chamber (612) is meniscus-shaped in cross section, and the number of the second chambers (612) is three.

8. The utility model provides a scroll compressor, is including casing (8) and install the scroll dish subassembly in casing (8), and the scroll dish subassembly is including quiet vortex (1) and move vortex (9), and the top that lies in quiet vortex (1) in casing (8) has high-pressure chamber (10), its characterized in that: the fixed vortex (1) is the fixed vortex (1) with the exhaust check valve structure (6) as claimed in any one of claims 1-5 and 7, the space at the back of the end plate (2) of the fixed vortex (1) is a high-pressure chamber (10), and the exhaust check chamber (61) is communicated with the high-pressure chamber (10); the check valve plate (63) can enable the exhaust hole (5) of the static vortex (1) to be communicated with the high-pressure cavity (10) when moving upwards, and the check valve plate (63) enables the exhaust hole (5) of the static vortex (1) not to be communicated with the high-pressure cavity (10) when moving downwards.

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