CN212959116U

CN212959116U - Upper outer cover for rotary compressor

Info

Publication number: CN212959116U
Application number: CN202021801080.8U
Authority: CN
Inventors: 陈朋; 武小娟; 齐永生; 樊张增
Original assignee: Xi'an Qing'an Refrigeration Equipment Co ltd
Current assignee: Xi'an Qing'an Refrigeration Equipment Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-04-13
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses a rotary compressor uses dustcoat, this dustcoat include top surface (1), spherical top surface (2) and lateral wall (3), the area of top surface (1) is less than the area of the circle that lateral wall (3) formed, spherical top surface (2) are used for top surface (1) with the connection of lateral wall (3). The utility model provides an area of the top surface of going up the dustcoat is less than the area of the circle that the lateral wall formed, has reduced top surface plane area, has strengthened the fatigue strength of going up the dustcoat, and spherical top surface is used for connecting top surface and lateral wall, alleviates upper shield plastic deformation simultaneously. Will the utility model provides an go up the dustcoat and install on the compressor, can reduce the compressor to the stress of top surface when high pressure operation, reduce the deformation of top surface to because this goes up and adopts spherical top surface to be connected between the top surface of dustcoat and the lateral wall, furthest has increased the pressure-bearing nature of compressor.

Description

Upper outer cover for rotary compressor

Technical Field

The utility model relates to a rotary compressor uses dustcoat.

Background

Along with the progress of society and the improvement of living standard of people, heat exchange equipment such as an air conditioner and the like are more and more widely applied in life, and the living comfort of people is improved. The outdoor unit of the air conditioner can be started and stopped during working, particularly a fixed-frequency compressor, the starting and stopping times are more during the operation process, and certain requirements are provided for the pressure resistance and the service life of the whole compressor; the main means of the compressor is generally solved by engineers through simulating the aspects of stress analysis, compressor complete machine destructive test, oil pressure pulse test and the like.

In recent years, an environment-friendly refrigerant R32 replaces a R410A working medium in the working medium of an air conditioning system, the running pressure of the compressor is increased, the upper outer cover circularly applies pressure under pulse oil pressure when a pulse test is performed on the traditional rotary compressor, the bending part of the upper outer cover continuously circularly applies force, and when the test requirement is not met, fatigue cracks appear at the bending fillet, so that the cracks leak, and the test fails.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that prior art exists, the utility model aims to provide a fatigue strength is strong here to can reduce the compressor and to the stress of top surface when high-pressure operation, reduce the top surface and warp, and increase the rotary compressor of compressor pressure-bearing nature and use the dustcoat.

In order to realize the purpose of the utility model, the rotary compressor that is provided herein uses upper cover includes top surface, spherical top surface and lateral wall, the area of top surface is less than the area of the circle that the lateral wall formed, spherical top surface is used for the top surface with the connection of lateral wall.

Further, the highest point of the top surface is higher than the highest point of the spherical top surface.

Further, a fillet R1 is formed at the connecting transition position of the top surface and the spherical top surface, a ratio is formed between the fillet R1 and the thickness of the top surface plate, the thickness of the spherical top surface plate and the thickness of the side wall plate respectively, and the ratio is more than or equal to 0.5.

Furthermore, a fillet R2 is formed at the transition position of the spherical top surface and the side wall, a ratio is formed between the fillet R2 and the thickness of the top surface, the thickness of the spherical top surface and the thickness of the side wall respectively, and the ratio is not less than 0.5.

Further, the ratio of the plate thickness of the top surface, the spherical top surface and the side wall to the diameter of a circle formed by the side wall is 0.025-0.035.

Further, the top surface is an irregular approximate polygon. By adjusting the edge shape of the irregular approximate polygon, the strength of the upper outer cover and the fatigue strength of the upper outer cover are further enhanced.

The beneficial effects of the utility model include:

1) the utility model provides an area of the top surface of going up the dustcoat is less than the area of the circle that the lateral wall formed, has reduced top surface plane area, has strengthened the fatigue strength of going up the dustcoat, and spherical top surface is used for connecting top surface and lateral wall, alleviates upper shield plastic deformation simultaneously. Will the utility model provides an go up the dustcoat and install on the compressor, can reduce the compressor to the stress of top surface when high pressure operation, reduce the deformation of top surface to because this goes up and adopts spherical top surface to be connected between the top surface of dustcoat and the lateral wall, furthest has increased the pressure-bearing nature of compressor.

2) The highest point of the top surface is set to be higher than that of the spherical top surface, so that a certain distance is reserved between the top surface and the spherical top surface, and the fatigue strength of the upper outer cover is further enhanced.

3) The utility model discloses constitute the ratio with the fillet that the top surface and the spherical top surface are connected the fillet that excessive department formed, spherical top surface and lateral wall are connected the fillet that excessive department formed respectively with panel thickness, further strengthened the fatigue strength of going up the dustcoat.

4) The fatigue strength of the upper outer cover is further enhanced by the ratio of the plate thickness of the top surface, the spherical top surface and the side wall to the diameter of the circle formed by the side wall.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic structural view of an upper outer cover for a rotary compressor according to the present invention;

fig. 2 is a cross-sectional view of an upper shell for a rotary compressor according to the present invention;

fig. 3 is a top view of an upper outer cover for a rotary compressor according to the present invention;

in the drawings: 1-top surface, 2-spherical top surface, 3-side wall, 4-exhaust pipe hole and 5-dense insertion hole.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the inventive subject matter may be practiced without one or more of the specific details, or with other methods. In other instances, well-known methods, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the invention.

Referring to fig. 1-3, the present invention provides an upper outer cover for a rotary compressor, which comprises a top surface 1, a spherical top surface 2 and a side wall 3, wherein the area of the top surface 1 is smaller than the area of the circle formed by the side wall 3, and the spherical top surface 2 is used for connecting the top surface 1 and the side wall 3. The shape of the top surface 1 ensures the installation of the screw and the electric appliance cover, the shape of the top surface 1 adopts an irregular approximate polygon, and the strength and the fatigue strength of the upper outer cover can be enhanced by adjusting the edge shape of the top surface.

The fatigue strength of the upper outer cover is enhanced by adjusting the proportion of the area of the top surface 1 to the area of the circle formed by the side wall 3, so that the upper outer cover meets the oil pressure pulse requirement of the compressor. The ratio of the area of the top surface 1 to the area of the circle formed by the side walls 3 can be adjusted according to the actual situation, for example, the area of the top surface 1 occupies 15% to 25% of the area of the circle formed by the side walls 3.

In order to further enhance the fatigue strength of the upper outer cover, the highest point of the top surface 1 of the upper outer cover for the rotary compressor provided herein is higher than the highest point of the spherical top surface 2, and the distance between the highest points of the two can be adjusted according to the implementation situation, for example, the distance between the highest point of the top surface 1 and the highest point of the spherical top surface 2 is greater than or equal to 1.5 mm.

In addition, the top surface 1 of the upper outer cover for the rotary compressor provided by the invention forms a round angle R1 at the transition of the top surface 2 and the spherical top surface 2, and forms a round angle R2 at the transition of the spherical top surface 2 and the side wall 3; the ratio of the fillet R1 to the fillet R2 to the thickness of the plate is not less than 0.5, and can be adjusted to be less than 0.5 according to actual conditions. The sheet thicknesses described herein are the sheet thickness of the top surface 1, the sheet thickness of the spherical top surface 2, and the sheet thickness of the side wall 3, i.e., the ratio of the radius R1 to the sheet thickness of the top surface 1, the sheet thickness of the spherical top surface 2, and the sheet thickness of the side wall 3, respectively, and the ratio of the radius R2 to the sheet thickness of the top surface 1, the sheet thickness of the spherical top surface 2, and the sheet thickness of the side wall 3, respectively. The fatigue strength of the upper outer cover is further enhanced by adjusting the ratio of the fillet to the thickness of the plate.

The plate thickness of the top surface 1, the spherical top surface 2 and the side wall 3 of the upper outer cover for the rotary compressor provided by the invention respectively forms a ratio with the diameter of the circle formed by the side wall 3, and the ratio is determined according to the plate thickness and the diameter of the circle formed by the side wall 3 and can be between 0.025 and 0.035.

Here, the vertical projections of the top surface 1 and the spherical top surface 2 are both within the area of the circle formed by the side walls 3.

The upper outer cover for the rotary compressor provided herein further includes a discharge pipe hole 4 and a close-fitting hole 5 provided on the top surface 1, the discharge pipe hole 4 being located above the center of the circle formed by the side walls 3 for the purpose of standardizing the discharge pipe connection position.

The top surface 1, the spherical top surface 2 and the side wall 3 can be made of any material, such as SPHC material, so that the material of the upper outer cover is the same as that of the shell of the compressor, the material purchase is simple and convenient, the manufacturing cost is not changed, and the purchase and manufacturing cost is reduced. The SPHC material includes, but is not limited to: 10#, 15# hot rolled steel sheet (national standard GB/T699-1999), etc. The material thickness of the top surface 1, the spherical top surface 2 and the side wall 3 can be determined according to actual conditions, for example, the adopted material thickness is more than or equal to 2.6 mm.

The upper outer cover provided by the invention effectively reduces the stress of the upper outer cover when the interior of the compressor is high-pressure, so that the fatigue pulse frequency is obvious in effect especially in the high-pressure range of 4.0-4.5 MPa, and the pulse frequency is improved by more than 60%. When the thickness of the adopted material is 2.6mm, the oil pressure pulse frequency of the structure on the whole machine can reach 20 ten thousand times; the thickness of the material is more than 2.6mm, and the oil pressure pulse frequency of the structure on the whole machine can reach more than 20 ten thousand.

The upper outer cover for the rotary compressor is suitable for any compressor, and particularly relates to a compressor with the requirements on the strength and the fatigue life of the upper outer cover being more than or equal to 15 ten thousand times. The purpose of installing the outer cover on the compressor in the using process is to effectively improve the pulse frequency of the compressor, the upper outer cover provided by the text is installed on the compressor, and the pulse frequency can be improved to 20 ten thousand times, so that the pulse frequency of the whole compressor is well improved, and the safety and the market competitiveness of the compressor are improved. In addition, set up exhaust pipe hole 4 and close jack 5 on top surface 1, taken into account existing motor cover mounting structure and packing material, both improved the commonality of annex and packing, reduced goods and materials deposit again, promoted compressor design standardization rate, and convenient to use does benefit to the popularization.

The material specification and the manufacturing cost of the upper outer cover for the rotary compressor are unchanged, but the service life of the whole compressor is obviously prolonged, the requirement of a new working medium refrigerant air-conditioning system can be met, and the rotary compressor has a better market popularization prospect. The upper outer cover for the rotary compressor is assembled with the air conditioner in an unchanged installation mode, and the original process files are directly executed when the whole machine is assembled and produced without newly adding and changing processes and equipment.

The present disclosure has been described in terms of the above-described embodiments, which are merely exemplary of the implementations of the present disclosure. It must be noted that the disclosed embodiments do not limit the scope of the disclosure. Rather, variations and modifications are possible within the spirit and scope of the disclosure, and these are all within the scope of the disclosure.

Claims

1. The utility model provides a rotary compressor uses dustcoat which characterized in that: the outer cover comprises a top surface (1), a spherical top surface (2) and a side wall (3), wherein the area of the top surface (1) is smaller than that of a circle formed by the side wall (3), and the spherical top surface (2) is used for connecting the top surface (1) with the side wall (3).

2. The upper outer cover for a rotary compressor according to claim 1, wherein: the highest point of the top surface (1) is higher than that of the spherical top surface (2).

3. The upper outer cover for a rotary compressor according to claim 2, wherein: the distance between the top surface (1) and the highest point of the spherical top surface (2) is more than or equal to 1.5 mm.

4. The upper outer cover for a rotary compressor according to claim 1, wherein: the connecting transition part of the top surface (1) and the spherical top surface (2) forms a fillet R1, the fillet R1 forms a ratio with the plate thickness of the top surface (1), the plate thickness of the spherical top surface (2) and the plate thickness of the side wall (3), and the ratio is more than or equal to 0.5.

5. The upper outer cover for a rotary compressor according to any one of claims 1 to 4, wherein: the connecting transition part of the spherical top surface (2) and the side wall (3) forms a fillet R2, the fillet R2 forms a ratio with the plate thickness of the top surface (1), the plate thickness of the spherical top surface (2) and the plate thickness of the side wall (3), and the ratio is more than or equal to 0.5.

6. The upper outer cover for a rotary compressor according to any one of claims 1 to 4, wherein: the area of the top surface (1) accounts for 15-25% of the area of a circle formed by the side wall (3).

7. The upper outer cover for a rotary compressor according to any one of claims 1 to 4, wherein: the vertical projections of the top surface (1) and the spherical top surface (2) are both within the area of the circle formed by the side wall (3).

8. The upper outer cover for a rotary compressor according to any one of claims 1 to 4, wherein: the ratio of the plate thickness of the top surface (1), the plate thickness of the spherical top surface (2) and the plate thickness of the side wall (3) to the diameter of a circle formed by the side wall (3) is 0.025-0.035.

9. The upper outer cover for a rotary compressor according to any one of claims 1 to 4, wherein: the top surface (1) is provided with an exhaust pipe hole (4) and a sealed insertion hole (5).