CN215256816U

CN215256816U - Compressor

Info

Publication number: CN215256816U
Application number: CN202121614526.0U
Authority: CN
Inventors: 李磊; 郭伟平
Original assignee: Emerson Climate Technologies Suzhou Co Ltd
Current assignee: Copeland Suzhou Co Ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2021-12-21
Anticipated expiration: 2031-07-15

Abstract

The utility model provides a compressor, include: a housing; a partition plate dividing an inner space of the housing into a low pressure chamber and a high pressure chamber and having an opening portion defining a central through hole; a compression mechanism provided in the housing and adapted to compress a fluid sucked from the low pressure chamber and then discharge the compressed fluid to the high pressure chamber; and a sealing member configured to be coupled to the opening portion and to be interference-fitted with the opening portion to seal the low pressure chamber from the high pressure chamber, wherein the sealing member includes a first interference surface, the opening portion includes a second interference surface interference-fitted with the first interference surface, and at least one sealing groove for accommodating an adhesive is provided between the first interference surface and the second interference surface. The utility model provides a compressor in order to improve sealed effect through set up the seal groove that holds the binder between the sealed interference surface in high pressure chamber and low pressure chamber.

Description

Compressor

Technical Field

The utility model relates to a compressor. The present invention relates in particular to a scroll compressor improved in the sealing of the high pressure chamber and the low pressure chamber.

Background

The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

A scroll compressor in the related art is a positive displacement fluid machine having a fixed scroll and an orbiting scroll. The fixed scroll and the orbiting scroll may generally have substantially the same scroll line and be installed opposite to each other at a phase angle of 180 ° different from each other, wherein the orbiting scroll is capable of performing a planar orbiting motion (i.e., orbiting motion) around a center of a base circle of the fixed scroll during an operation of the scroll compressor to compress a refrigerant sucked into the scroll compressor into a high-temperature and high-pressure gas and discharge the same from a discharge side. In order to ensure the efficiency of the compressor, the compressed high-temperature and high-pressure gas cannot leak to the low-pressure gas side.

In current low pressure side scroll compressors, an interference fit configuration of a partition plate (sound absorbing plate) and a floating seal ring is used to separate and seal a high pressure region and a low pressure region of the compressor, for example, an interference fit between the partition plate and a metal insert, or an interference fit between the partition plate and a non-orbiting scroll, so that high temperature and high pressure gas after being compressed does not leak to a low temperature and low pressure gas region. The interference surface is generally a smooth cylindrical surface, the interference magnitude needs to be controlled during the design and processing of parts so as to facilitate interference press fit during assembly, and sealant is generally required to be coated on the interference surface to help sealing before press fit.

However, due to the limitations of the assembly and manufacturing processes, the interference press-in force between the parts needs to be kept within a proper range, too high interference pressure easily causes the parts to damage or destroy the surface coated with the sealant during the assembly process, and too low interference pressure cannot generate enough sealing holding force, and further causes poor sealing effect. In addition, high requirements are placed on the design of the size of the interference fit surface of the part and the machining precision, so that the machining and time cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compressor in order to improve sealed effect through set up the seal groove that holds the binder between the sealed interference surface in high pressure chamber and low pressure chamber.

The utility model aims at providing a still provide the compressor that has reduced the requirement and the reduce cost to the design of part size and machining precision.

The utility model provides a compressor, include: a housing; a partition plate dividing an inner space of the housing into a low pressure chamber and a high pressure chamber and having an opening portion defining a central through hole; a compression mechanism provided in the housing and adapted to compress fluid drawn in from the low pressure chamber and then discharge the compressed fluid to the high pressure chamber; and a seal member configured to be coupled to the open portion and to be in interference fit with the open portion to seal the low pressure chamber from the high pressure chamber, wherein the seal member includes a first interference surface, the open portion includes a second interference surface in interference fit with the first interference surface, and at least one seal groove for receiving an adhesive is provided between the first interference surface and the second interference surface.

Advantageously, the first and second interference surfaces are substantially smooth annular faces.

Advantageously, the sealing groove is a circumferential annular sealing groove or a spiral sealing groove.

Advantageously, the sealing groove comprises: a containment groove enclosed between the first interference surface and the second interference surface; and/or an axially open groove formed by at least one of the first and second interference surfaces including a generally conical face.

Advantageously, the containment groove is in plurality and/or the axially open groove is provided at both axial ends of the interference fit.

Advantageously, the opening portion is configured as a cylindrical portion extending in an axial direction, and the seal member is joined to the opening portion on an inner side in a circumferential direction of the opening portion to form an interference fit, wherein the first interference surface of the seal member is an outer circumferential surface and the second interference surface of the opening portion is an inner circumferential surface, or the seal member is joined to the opening portion on an outer side in the circumferential direction of the opening portion to form an interference fit, wherein the first interference surface of the seal member is an inner circumferential surface and the second interference surface of the opening portion is an outer circumferential surface.

Advantageously, the compressor is a scroll compressor, the compression mechanism comprises a non-orbiting scroll and an orbiting scroll cooperating to define a compression chamber for compressing fluid, the non-orbiting scroll including an end plate provided with a discharge port at a substantially central location and an annular hub portion surrounding the discharge port, and the annular hub portion serving as the sealing member.

Advantageously, the compressor is a scroll compressor, the compression mechanism includes a fixed scroll and an orbiting scroll which cooperate to define a compression chamber for compressing fluid, and a collar serving as the sealing member is provided at the opening portion, and an axial end surface of the collar is adapted to cooperate with a floating seal ring provided to the fixed scroll to seal the low pressure chamber from the high pressure chamber.

Advantageously, the seal groove is disposed in at least one of the first and second interference surfaces.

Advantageously, the sealing groove is a groove for receiving a sealing glue comprising loctite glue.

According to the utility model discloses compressor has one or more in following beneficial effect: by providing a seal groove for accommodating an adhesive between the interference surfaces, the degree of freedom of the assembly and manufacturing process can be improved, interference pressure can be favorably maintained within an appropriate range, damage to parts or breakage of the adhesive due to excessive interference pressure can be reduced or eliminated, sufficient seal holding force is generated at the same time, and improved sealing effect is achieved. In addition, the requirements on the size design and machining precision of parts are reduced, and the machining and time cost is reduced.

Drawings

Embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which like features or components are designated by like reference numerals and which are not necessarily drawn to scale, and in which:

fig. 1 is a schematic view showing a part of a compressor according to a first embodiment of the present invention.

Fig. 2 is an enlarged schematic view illustrating a portion a of fig. 1.

Fig. 3 is a schematic view showing a variation of the sealing configuration of the compressor according to the first embodiment of the present invention.

Fig. 4 is a schematic view showing a part of a compressor according to a second embodiment of the present invention.

Fig. 5 is an enlarged schematic view illustrating a portion B of fig. 4.

Detailed Description

The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, like reference numerals indicate like or similar parts and features. The drawings are only schematic representations of the principles and concepts of the embodiments of the present invention, not necessarily the specific dimensions and proportions thereof, illustrated by the various embodiments of the invention, and the specific parts thereof which are illustrated in particular drawings may have exaggerated forms to show relevant details or structures of the embodiments of the present invention.

A compressor according to an embodiment of the present invention will be described with reference to the accompanying drawings. It is noted that the compressor according to the present invention may comprise many other components in addition to those shown in the drawings. In the present invention, in order to clearly explain the inventive concept, only the parts related to the inventive concept are shown by way of example, and other parts are omitted.

A compressor according to a first embodiment of the present invention will be described with reference to fig. 1 and 2, wherein fig. 1 is a schematic view showing a part of the compressor according to the first embodiment of the present invention. Fig. 2 is an enlarged schematic view illustrating a portion a of fig. 1.

In the drawings, there is shown a compressor 10 comprising: a housing 20; a partition plate 30 dividing an inner space of the case into a low-pressure chamber L (low-temperature low-pressure gas region) and a high-pressure chamber H (high-temperature high-pressure gas region) and having an opening portion 32 defining a central through hole; a compression mechanism 100 provided in the housing 20 and adapted to compress a fluid drawn from the low pressure chamber L and then discharge the compressed fluid to the high pressure chamber H; and a seal member 40 configured to be joined to the opening portion 32 and to be interference-fitted with the opening portion 32 to seal the low pressure chamber from the high pressure chamber, wherein the seal member 40 includes a first interference surface 41, the opening portion 32 includes a second interference surface 31 interference-fitted with the first interference surface 41, and a seal groove 50 and a seal groove 500 (see fig. 2) for accommodating an adhesive are provided between the first interference surface 41 and the second interference surface 31.

Compared with the prior art, the sealing groove for containing the adhesive is arranged between the interference surfaces, so that the degree of freedom of an assembling and manufacturing process can be improved (for example, the influence of component assembling and position tolerance on interference fit pressure is reduced or eliminated), the interference pressure is favorably kept in a proper range, the damage of the components or the damage of the adhesive caused by overlarge interference pressure can be reduced or eliminated, meanwhile, enough sealing holding force is generated, and improved sealing effect is realized. In addition, the requirements on the size design and machining precision of parts are reduced, and the machining and time cost is reduced.

In fig. 1, the opening portion 32 is configured as a cylindrical portion extending in the axial direction, and the seal member 40, of which the outer circumferential surface is a first interference surface and the inner circumferential surface of the opening portion 32 is a second interference surface, is joined to the opening portion 32 inside in the circumferential direction of the opening portion 32 to form an interference fit. It will be appreciated by those skilled in the art that the sealing member 40 may be engaged to the opening portion circumferentially outwardly of the opening portion 32 to form an interference fit, with the inner circumferential surface of the sealing member acting as a first interference surface and the outer circumferential surface of the opening portion 32 acting as a second interference surface, the inner circumferential surface of the sealing member being in interference fit with the outer circumferential surface of the opening portion 32.

In the drawings, a scroll compressor is illustrated, but the above-described sealing arrangement is also applicable to any type of compressor in which the high-pressure chamber and the low-pressure chamber are sealed in an interference sealing arrangement. In a scroll compressor, the compression mechanism includes a fixed scroll 110 and an orbiting scroll (not shown) which cooperate to define a compression chamber for compressing fluid, the fixed scroll 110 including an end plate 112 provided with a discharge port 114 at a substantially central position and an annular hub portion surrounding the discharge port 114, which serves as the seal member 40.

The first interference surface 41 of the seal member 40 and the second interference surface 31 of the opening portion 32 may be substantially smooth annular surfaces or cylindrical surfaces. Referring to FIG. 2, a seal groove 50 is disposed in an outer circumferential surface (i.e., first interference surface 41) of an annular hub portion (i.e., seal member 40). Additionally or alternatively, the seal groove may also be provided in the inner circumferential surface (i.e., the second interference surface 31) of the opening portion 32 of the partition plate 30. The seal groove 50 is a closed groove closed between an outer circumferential surface of an annular boss portion and an inner circumferential surface of an opening portion, which are in interference fit.

Fig. 3 is a schematic view showing a variation of the sealing configuration of the compressor according to the first embodiment of the present invention, and the number of the sealing grooves 50 is set to two, of course, the number of the sealing grooves may be set as needed.

Further, the sealing groove may also be formed by having the interference surface comprise a substantially conical surface. Referring to fig. 2 and 3, the outer circumferential surface of the annular hub of the non-orbiting scroll includes a substantially conical surface at an axial upper end to form an axially open groove 500 between the outer circumferential surface of the annular hub and the inner circumferential surface of the opening portion of the diaphragm. Also, the inner circumferential surface of the opening portion 32 of the bulkhead 30 includes a substantially conical surface at the axial lower end to form an axially open groove 500 between the outer circumferential surface of the annular boss portion and the inner circumferential surface of the opening portion of the bulkhead.

A compressor according to a second embodiment of the present invention will now be described with reference to fig. 4 and 5, wherein fig. 4 is a schematic view showing a part of the compressor according to the second embodiment of the present invention. Fig. 5 is an enlarged schematic view illustrating a portion B of fig. 1.

In the drawings, the compressor is also shown as a scroll compressor, the compression mechanism 200 includes a non-orbiting scroll 210 and an orbiting scroll (not shown) which cooperate to define a compression chamber for compressing fluid, and a collar serving as a sealing member 400 is provided at the opening portion 32 of the partition plate 30.

The collar includes an outer circumferential surface as a first interference surface 410, the opening portion 32 includes an inner circumferential surface interference-fitted with the outer circumferential surface of the collar as a second interference surface 31, and a seal groove 50 for receiving an adhesive is provided between the outer circumferential surface of the collar and the inner circumferential surface of the opening portion, wherein the seal groove 50 is provided in the outer circumferential surface of the collar. Also, an axial end surface of the collar is adapted to cooperate with a floating seal ring 300 provided to the non-orbiting scroll 210 to seal the low pressure chamber from the high pressure chamber. Therefore, the partition plate 30 and the floating seal ring 300 partition the internal space of the scroll compressor housing 20 into the high pressure chamber H and the low pressure chamber L, so that the compressed high temperature and high pressure gas does not leak to the low pressure chamber L.

In particular, floating seal ring 300 forms two sealing surfaces by contacting its top surface with the lower end surface of the collar in bulkhead 30 to form an end face seal and contacting a non-metallic sealing tongue embedded on its inside to seal with scroll center hub 204 of non-orbiting scroll 210. By means of the two sealing surfaces, the high-pressure area and the low-pressure area and the high-pressure area and the middle-pressure area in the back-pressure chamber are isolated

In one aspect of the above embodiment, the sealing groove may be a groove for receiving a sealant including a loctite glue. In another aspect of the above embodiment, the seal groove may be a circumferential annular seal groove or a spiral seal groove. The sealing groove may be in the form of a recessed recess on the circumferential surface. The sealing groove may be continuous or discontinuous. In addition, the sealing groove may also be in the form of a concave groove formed by the fit between the angled surfaces.

Here, the exemplary embodiments of the present invention have been described in detail, but it should be understood that the present invention is not limited to the specific embodiments described and illustrated in detail above. Numerous modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the invention. All such variations and modifications are intended to fall within the scope of the present invention. Moreover, all the components described herein may be replaced by other technically equivalent components.

Claims

1. A compressor, comprising:

a housing;

a partition plate dividing an inner space of the housing into a low pressure chamber and a high pressure chamber and having an opening portion defining a central through hole;

a compression mechanism provided in the housing and adapted to compress fluid drawn in from the low pressure chamber and then discharge the compressed fluid to the high pressure chamber; and

a seal member configured to be engaged to the open portion and to be interference fit with the open portion to seal the low pressure chamber from the high pressure chamber, wherein the seal member includes a first interference surface, the open portion includes a second interference surface interference fit with the first interference surface,

wherein at least one sealing groove for receiving an adhesive is disposed between the first and second interference surfaces.

2. The compressor of claim 1, wherein the first and second interference surfaces are substantially smooth annular faces.

3. The compressor of claim 1, wherein the seal groove is a circumferential annular seal groove or a spiral seal groove.

4. The compressor of claim 1, wherein the seal groove comprises: a containment groove enclosed between the first interference surface and the second interference surface; and/or an axially open groove formed by at least one of the first and second interference surfaces including a generally conical face.

5. Compressor according to claim 4, characterized in that said containment groove is in plurality and/or in that said axially open groove is provided at both axial ends of the interference fit.

6. The compressor according to any one of claims 1 to 5, wherein:

the opening portion is configured as a cylindrical portion extending in the axial direction, and

the seal member is joined to the opening portion at the opening portion circumferential direction inside to form an interference fit, wherein the first interference surface of the seal member is an outer circumferential surface and the second interference surface of the opening portion is an inner circumferential surface, or the seal member is joined to the opening portion at the opening portion circumferential direction outside to form an interference fit, wherein the first interference surface of the seal member is an inner circumferential surface and the second interference surface of the opening portion is an outer circumferential surface.

7. The compressor according to any one of claims 1 to 5, wherein:

the compressor is a scroll compressor, the compression mechanism includes a fixed scroll and an orbiting scroll cooperating to define a compression chamber for compressing fluid, the fixed scroll including an end plate provided with a discharge port at a substantially central position and an annular hub portion surrounding the discharge port, and

the annular hub serves as the sealing member.

8. The compressor according to any one of claims 1 to 5, wherein:

the compressor is a scroll compressor, the compression mechanism includes a fixed scroll and an orbiting scroll cooperating to define a compression chamber for compressing fluid, an

A collar serving as the seal member is provided at the opening portion, and an axial end surface of the collar is adapted to cooperate with a floating seal ring provided to the non-orbiting scroll to seal the low pressure chamber from the high pressure chamber.

9. The compressor of any one of claims 1-5, wherein the seal groove is disposed in at least one of the first and second interference surfaces.

10. A compressor according to any one of claims 1 to 5 wherein the sealing groove is a groove for receiving a sealing glue comprising a loctite glue.