CN212508833U

CN212508833U - Compressor cylinder and compressor

Info

Publication number: CN212508833U
Application number: CN202021896633.2U
Authority: CN
Inventors: 张优伟; 张涌; 吕林波; 胡孔生; 杨琦
Original assignee: Shanghai Highly Electrical Appliances Co Ltd
Current assignee: Shanghai Highly Electrical Appliances Co Ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-02-09
Anticipated expiration: 2030-09-02

Abstract

The utility model provides a compressor cylinder and a compressor, wherein the cylinder comprises a cylinder body, and a bolt hole which is communicated along the height direction of the cylinder body is arranged on the cylinder body; at least one end face of the cylinder body is positioned between the bolt hole and the inner wall of the cylinder body and is provided with a groove along the radial direction of the cylinder body; the method and the device reduce the influence of bolt fastening force on deformation of the inner projection of the cylinder, and improve the assembly precision of the compressor pump body; meanwhile, the friction loss in the running process of the compressor is reduced, so that the performance of the compressor is improved.

Description

Compressor cylinder and compressor

Technical Field

The utility model relates to a compressor technical field, specifically speaking relates to a compressor cylinder and compressor.

Background

As shown in fig. 1, in the assembly process of the prior art compressor pump body, bolts 101 are usually used to fasten an upper cylinder cover 102, a cylinder 103 and a lower cylinder cover 104 together. The fastening force generated after the bolt is tightened can cause the cylinder to deform to different degrees in the axial direction and the radial direction. The radial inward convex deformation not only affects the assembly precision of the pump body, but also increases the friction loss in the running process of the compressor to reduce the performance of the compressor, and can cause the locked rotor failure of the compressor under extreme conditions.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a compressor cylinder and compressor reduces the influence of bolt-up power to the interior convex deformation of cylinder.

According to one aspect of the present invention, there is provided a compressor cylinder, the cylinder including a cylinder body, the cylinder body having a bolt hole formed therethrough along a height direction of the cylinder body; at least one end face of the cylinder body is positioned between the bolt hole and the inner wall of the cylinder body and is provided with a groove along the radial direction of the cylinder body.

Preferably, the depth of the groove in the height direction of the cylinder is greater than or equal to 0.5mm and less than or equal to the height of the cylinder.

Preferably, the length of the groove in the radial direction of the cylinder block is a, the minimum distance between the bolt hole and the inner wall of the cylinder block is c, and the ratio of a to c is 0.05 or more and 0.5 or less.

Preferably, a minimum distance between a center line of a cross section of the groove and an inner wall of the cylinder block is d, a minimum distance between the bolt hole and the inner wall of the cylinder block is c, and a ratio of d to c is 0.3 or more and 0.7 or less.

Preferably, the length of the groove in a first direction perpendicular to a radial direction of the cylinder block is equal to or greater than the hole diameter of the bolt hole.

Preferably, a length of the groove in a radial direction of the cylinder block is 0.2mm or more.

Preferably, the groove is arc-shaped, and an inner wall of the groove extends toward a side close to the bolt hole.

Preferably, the grooves are formed in both end faces of the cylinder body, and the depth of the grooves in the height direction of the cylinder body is smaller than half of the height of the cylinder body.

According to the utility model discloses a compressor is provided in another aspect, the compressor includes cylinder cap, lower cylinder cap and above-mentioned compressor cylinder, the compressor passes through the bolt in proper order go up the cylinder cap the bolt hole of cylinder and lower cylinder cap realizes fixed connection between last cylinder cap, lower cylinder cap and the cylinder.

Compared with the prior art, the utility model beneficial effect lie in:

the compressor cylinder and the compressor provided by the utility model have the advantages that the groove is arranged between the bolt hole of the cylinder body and the inner wall of the cylinder body, the depth and the like of the groove are designed and optimized, the deformation of the cylinder body caused by bolt fastening along the radial direction is counteracted, the influence of the bolt fastening force on the deformation of the cylinder body in the convex direction is reduced, and the assembly precision of the compressor pump body is improved; and the friction loss in the running process of the compressor is reduced, so that the performance and the reliability of the compressor are improved.

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.

FIG. 1 is a partial cross-sectional view of a prior art compressor pump assembly;

FIG. 2 is a partial cross-sectional view of a compressor cylinder disclosed in this embodiment;

FIG. 3 is a top view of the compressor cylinder disclosed in this embodiment, showing the side of the cylinder adjacent to the upper head;

FIG. 4 is an enlarged partial schematic view of FIG. 3;

FIG. 5 is a bottom view of the compressor cylinder disclosed in this embodiment, showing the side of the cylinder adjacent to the lower head;

FIG. 6 is a bottom view of a compressor cylinder as disclosed in another embodiment of the present application.

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 embodiments 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. 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 disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other materials, devices, etc. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising," "having," and "providing" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

As shown in fig. 2 to 5, the embodiment of the utility model discloses a compressor cylinder. The cylinder includes a cylinder body 201. The cylinder 201 is provided with a bolt hole 202 penetrating in the height direction of the cylinder 201. The bolt holes 202 are used for assembling the air cylinder, the upper cylinder cover and the lower cylinder cover together by using bolts in the assembling process of the compressor pump body.

As shown in fig. 2, in the present embodiment, a groove 203 is provided on at least one end surface of the cylinder 201, between the bolt hole 202 and the inner wall of the cylinder 201, and in the radial direction of the cylinder 201. I.e. on the same end face, between the inner wall of the cylinder 201 and each bolt hole 202 the above-mentioned groove 203 is provided. It should be noted that, in other embodiments, the groove 203 may be only provided between the inner wall of the cylinder 201 and a part of the bolt holes 202 on the same end surface, that is, no groove may be provided between the inner wall of the cylinder 201 and a part of the bolt holes 202, which is also within the protection scope of the present application.

Through the arrangement of the groove 203, the deformation of the cylinder body 201 caused by bolt fastening along the radial direction can be counteracted, the influence of the bolt fastening force on the inward convex deformation of the cylinder is reduced, and the assembly precision of the compressor pump body is improved. Meanwhile, after the groove 203 is formed, the inward convex deformation can be further released outwards in the radial direction of the cylinder body 201 through the pressure difference between the inner cavity of the cylinder body 201 and the groove 203 in the running process of the compressor.

It should be noted that fig. 2 of this embodiment is a cross-sectional view corresponding to a half cylinder body 201 of the cylinder, and is not a cross-sectional view corresponding to a complete cylinder body 201. In addition, although fig. 2 to 4 shown in the present application show the grooves 203 provided on both the upper end surface and the lower end surface of the cylinder block 201, the present application is not limited thereto, and in a specific implementation, the grooves 203 may be provided only on one of the upper end surface and the lower end surface of the cylinder block 201. As a preferred embodiment of the present application, as shown in fig. 3 and 5, grooves 203 are provided on both the upper end surface and the lower end surface of the cylinder 201, and the depth of the groove 203 in the height direction of the cylinder 201 is less than half of the height of the cylinder 201.

In this embodiment, the depth of the groove 203 in the height direction of the cylinder 201 is not less than 0.5mm and not more than the height of the cylinder 201. Referring to fig. 3 and 4, the length of the groove 203 in the radial direction of the cylinder 201, that is, the width of the groove 203 is a, and a is 0.2mm or more. The length of the groove 203 in the first direction is b, and b is equal to or greater than the diameter of the bolt hole 202. The first direction is perpendicular to the radial direction of the cylinder 201. This application optimizes through length, width and the degree of depth to recess 203, has realized reducing the protruding deformation influence in the cylinder that bolt-up power leads to, is favorable to reducing the friction loss of compressor operation in-process to promote the performance and the reliability of compressor.

With continued reference to fig. 3 and 4, the minimum distance between the bolt hole 202 and the inner wall of the cylinder 201 is c, and the minimum distance between the center line of the cross section of the groove 203 and the inner wall of the cylinder 201 is d. In this embodiment, the ratio of the width a of the groove 203 to the width c is greater than or equal to 0.05 and less than or equal to 0.5. For example, the ratio of a to c may be 0.15, 0.25, 0.35, or 0.45. The ratio of d to c is 0.3 to 0.7. For example, the ratio of d to c may be 0.4, 0.5, or 0.6. Therefore, the relative position relation of the groove 203 between the bolt hole 202 and the inner wall of the cylinder body 201 and the proportional relation of the width of the groove 203 in the distance between the bolt hole 202 and the inner wall of the cylinder body 201 are optimized, so that the deformation of the cylinder body 201 caused by bolt fastening along the radial inward projection can be further favorably counteracted, the influence of the bolt fastening force on the deformation of the cylinder body inward projection is further reduced, and the assembly precision of the compressor pump body is improved; on the other hand, the friction loss in the running process of the compressor is further reduced, so that the performance of the compressor is improved.

In this application, there is not a through state between the groove 203 and the bolt hole 202, and between the groove 203 and the inner cavity of the cylinder block 201.

It should be noted that the groove 203 is illustrated as a rectangle in the present application, but the cross-sectional shape of the groove 203 is not limited in the present application, for example, in another embodiment of the present application, fig. 6 is a bottom view of the cylinder in the embodiment on a side close to the lower cylinder head. As shown in fig. 6, the cylinder groove 203 may include circular arcs, dumbbells, rectangles, and other irregular shapes.

In another embodiment of the present application, the grooves 203 are all circular arc-shaped, and the inner walls of the grooves 203 extend toward a side close to the bolt hole 202. This is favorable to further offsetting the deformation that bolt fastening produced to cylinder body 201 along radial direction is protruding inwards, has strengthened the offset effect promptly to can further reduce the deformation influence that bolt fastening power is protruding inwards to the cylinder.

The embodiment of the utility model provides a still provide a compressor, this compressor include cylinder cap, lower cylinder cap and any embodiment of the aforesaid compressor cylinder, above-mentioned compressor passes the bolt hole and the aforesaid lower cylinder cap of above-mentioned cylinder cap, above-mentioned cylinder in proper order through the bolt, realizes the fixed connection between the aforesaid upper cylinder cap, lower cylinder cap and the cylinder. The detailed structural features and advantages of the compressor cylinder can be referred to the description of the above embodiments, and are not repeated herein.

To sum up, the utility model discloses a compressor cylinder and compressor have following advantage at least:

according to the compressor cylinder and the compressor disclosed by the embodiment, the groove is arranged between the bolt hole of the cylinder body and the inner wall of the cylinder body, and the depth of the groove, the relative position relation among the groove, the bolt hole and the inner wall of the cylinder body are optimized, so that the deformation of the cylinder body caused by bolt fastening along the radial direction is offset, the influence of the bolt fastening force on the deformation of the inner bulge of the cylinder is reduced, and the assembly precision of the pump body of the compressor is improved; and the friction loss in the running process of the compressor is reduced, so that the performance and the reliability of the compressor are improved.

In the description of the present invention, it is to be understood that the terms "bottom", "longitudinal", "lateral", "up", "down", "front", "back", "vertical", "horizontal", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the structures or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more and "several" means one or more unless otherwise specified.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A compressor cylinder comprises a cylinder body, and is characterized in that a bolt hole which is communicated along the height direction of the cylinder body is formed in the cylinder body; at least one end face of the cylinder body is positioned between the bolt hole and the inner wall of the cylinder body and is provided with a groove along the radial direction of the cylinder body.

2. The compressor cylinder as claimed in claim 1, wherein a depth of the groove in a height direction of the cylinder block is 0.5mm or more and 0 mm or less of a height of the cylinder block.

3. The compressor cylinder as claimed in claim 1, wherein the groove has a length a in a radial direction of the cylinder block, a minimum distance c between the bolt hole and an inner wall of the cylinder block, and a ratio of a to c is 0.05 or more and 0.5 or less.

4. The compressor cylinder as claimed in claim 1, wherein a minimum distance between a center line of a cross section of the groove and an inner wall of the cylinder block is d, a minimum distance between the bolt hole and the inner wall of the cylinder block is c, and a ratio of d to c is 0.3 or more and 0.7 or less.

5. The compressor cylinder as claimed in claim 1, wherein a length of the groove in a first direction perpendicular to a radial direction of the block is equal to or greater than a hole diameter of the bolt hole.

6. The compressor cylinder as claimed in claim 1, wherein a length of the groove in a radial direction of the cylinder block is 0.2mm or more.

7. The compressor cylinder as claimed in claim 1, wherein the groove is arc-shaped, and an inner wall of the groove extends toward a side close to the bolt hole.

8. The compressor cylinder as claimed in claim 1, wherein both end surfaces of the cylinder block are provided with the grooves, and the depth of the grooves in the height direction of the cylinder block is less than half of the height of the cylinder block.

9. A compressor, characterized in that it comprises an upper cylinder cover, a lower cylinder cover and a compressor cylinder according to any one of claims 1-8, said compressor being fixedly connected between said upper cylinder cover, said lower cylinder cover and said cylinder by means of bolts passing through said upper cylinder cover, said bolt holes of said cylinder and said lower cylinder cover in sequence.