CN215333419U

CN215333419U - Rotary compressor pump and compressor

Info

Publication number: CN215333419U
Application number: CN202121667586.9U
Authority: CN
Inventors: 纪德奎
Original assignee: Rechi Qingdao Precision Electric Machinery Co Ltd
Current assignee: Rechi Qingdao Precision Electric Machinery Co Ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2021-12-28
Anticipated expiration: 2031-07-21

Abstract

The utility model discloses a rotary compressor pump and a compressor, which comprise a pump body, wherein blade pull grooves are formed in the front side and the rear side of each blade of the pump body, and the width of each blade pull groove is equal; an eccentric shaft pull groove is formed in the joint of the lower thrust surface of the eccentric shaft of the pumping body and the short shaft.

Description

Rotary compressor pump and compressor

Technical Field

The utility model belongs to the technical field of compressors, and particularly relates to a rotary compressor pump and a compressor.

Background

Referring to fig. 4, during the pumping operation, the eccentric shaft lower thrust surface is always in contact with the lower support plane. If the grinding precision of the thrust surface under the eccentric shaft is not enough, the two parts are worn seriously, and the single body energy efficiency is abnormal.

Referring to FIG. 5, during the operation of the pump, the vane is in a reciprocating condition between the groove widths of the cylinder. If the gap size is small, the contact area between the vane and the cylinder groove width is increased. Resulting in compressor power anomalies.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a rotary compressor pump and a compressor so as to improve the energy efficiency of a single compressor and the grinding production quality of an eccentric shaft.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

in a first aspect, the technical scheme of the utility model provides a rotary compressor pump, which comprises a pump body, wherein blade pull grooves are formed in the front side and the rear side of each blade of the pump body, and the width of each blade pull groove is equal; an eccentric shaft pull groove is formed in the joint of the lower thrust surface of the eccentric shaft of the pumping body and the short shaft.

Further, the blade of pumping body is equipped with a plurality ofly, and every blade all is equipped with the blade kerve.

Furthermore, the blade pull groove on the front side and the blade pull groove on the rear side of the blade are both arranged in the middle of the blade.

Furthermore, the cross section of the blade pull groove is rectangular.

Furthermore, the section of the eccentric shaft pull groove is in a right trapezoid shape.

Furthermore, the wall surfaces of the eccentric shaft slot comprise a first wall surface, a second wall surface and a third wall surface, and the first wall surface, the second wall surface and the third wall surface are all concentric annular surfaces.

Furthermore, a cross section is formed by cutting the first wall surface, the second wall surface and the third wall surface by a plane passing through the central axis of the first wall surface, the cross section of the first wall surface is inclined to the cross section of the second wall surface, and the cross section of the second wall surface is vertically connected with the cross section of the third wall surface.

Furthermore, the wall surface of the blade groove comprises a first vertical surface, a second vertical surface and a bottom surface, wherein the bottom surface is a plane.

Further, the depths of the blade drawing grooves are the same.

In a second aspect, the present invention provides a compressor comprising a rotary compressor pump as described in the first aspect.

The technical scheme of the utility model has the following beneficial effects:

1) according to the utility model, the design of the pull groove is added on the side surface of the blade, so that the friction between the side surface and the groove width of the cylinder body is reduced when the blade is subjected to reciprocating operation. Thereby improving the energy efficiency of the compressor monomer; the design of adding the pull groove at the joint of the lower thrust surface and the short shaft of the eccentric shaft can not only avoid the increase of production cost caused by the material reworking phenomenon caused by poor grinding of the lower thrust surface. But also helps to improve the efficiency.

2) In the utility model, the drawing grooves on each blade have the same specification so as to be convenient for manufacturing.

3) In the utility model, the section of the eccentric shaft pull groove is in a right trapezoid shape, and the inclined plane of the eccentric shaft pull groove can adapt to the eccentric moment when the eccentric shaft rotates.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.

Fig. 1 is a schematic structural view of a prior art rotary compressor mentioned in the background of the utility model;

FIG. 2 is a schematic diagram of a prior art pump assembly as mentioned in the background of the utility model;

FIG. 3a is a schematic diagram of the thrust surface under the eccentric shaft of the prior art mentioned in the background of the utility model;

FIG. 3b is an enlarged view at G of FIG. 3 a;

FIG. 4 is a schematic view of a prior art blade as referred to in the background of the utility model;

FIG. 5 is a schematic view of a blade in accordance with one or more embodiments of the utility model;

FIG. 6a is a schematic view of the eccentric thrust plane in one or more embodiments of the present invention;

fig. 6b is an enlarged view at G in fig. 6 a.

In the figure: 11. the device comprises a top cover, 12, a shell, 13, a stator, 14, a rotor, 15, a pump, 16, a foot rest, 17, a filter flask, 18, a shell bottom, 21, a cylinder body, 22, an upper support, 23, an eccentric shaft, 24, a ring, 25, a lower support, 26, a blade, 201, a blade groove, 231 and an eccentric shaft groove.

The spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only.

Detailed Description

It should be noted that any combination between the following embodiments is possible.

Example 1

In a typical embodiment of the present invention, the present embodiment discloses a rotary compressor pump 15, which includes a pump 15 body, a blade pull groove 201 is disposed on a side surface of a blade 26 of the pump 15 body, and each blade pull groove 201 has an equal width; an eccentric shaft pull groove 231 is arranged at the joint of the lower thrust surface of the eccentric shaft 23 of the pumping 15 body and the short shaft.

It can be understood that the body of the pump 15 of the present invention includes a cylinder body 21, an upper support 22, an eccentric shaft 23, a ring 24, a lower support 25, and a vane 26. the upper end of the cylinder body 21 is connected to the upper support 22, the lower end of the cylinder body 21 is connected to the lower support 25, the eccentric shaft 23 is inserted into the center of the cylinder body 21, the ring 24 is disposed between the inner wall of the cylinder body 21 and the eccentric shaft 23, and the vane 26 is disposed between the ring 24 and the inner wall of the cylinder body 21. The ring 24 and the blades 26 may be referred to collectively as an impeller, which has a particular aerodynamic configuration that draws fluid in from one end to the other as it rotates. In the actual operation process, the eccentric shaft 23 is the core of the pump 15, and the eccentric shaft 23 drives the impeller to rotate in the rotating process.

The vanes 26 of the body of the pump 15 are provided in plurality, and each vane 26 is provided with a vane pull groove 201.

Specifically, the impeller generally used includes 17 blades 26, and the direction along the rotation direction of the impeller is defined as front, and the direction opposite to the rotation direction of the impeller is defined as rear, so that the front and rear sides of the blade 26 are provided with blade pull grooves 201, and the blade pull grooves 201 on the front side of the blade 26 and the blade pull grooves 201 on the rear side of the blade 26 are equal in width.

The grooves of the blades 26 are formed in the embodiment, and the friction between the side surfaces of the blades 26 and the groove width of the cylinder body 21 during reciprocating operation is mainly considered to be reduced, so that the energy efficiency of the compressor unit is improved. In addition, the slots can also reduce the weight of the blades 26, which is beneficial to improving the operating efficiency of the impeller.

In this embodiment, the cross section of the blade pull groove 201 is rectangular, and the depths of the blade pull grooves 201 are the same.

Specifically, the wall surface of the blade groove 201 includes a first vertical surface, a second vertical surface and a bottom surface, wherein the bottom surface is a plane.

It should be noted that the overall shape of the blade 26 may be a straight blade 26 as used in the present embodiment and the drawings, or may be a curved blade 26, and therefore the shape of the entire blade 26 is defined by using the cross-sectional shape.

Since the blade 26 in the present embodiment is a flat blade 26, the specific shape of the pull grooves formed on both sides of the blade 26 in the present embodiment is a rectangular parallelepiped.

When the impeller rotates, the vane pull groove 201 not only has the aforementioned functions of reducing abrasion and weight, but also has a certain drainage function, and fluid in the cavity can be guided by the vane pull groove 201.

The cross section of the eccentric shaft pull groove 231 is in a right trapezoid shape.

Specifically, the wall surfaces of the eccentric shaft slot 231 include a first wall surface, a second wall surface, and a third wall surface, and the first wall surface, the second wall surface, and the third wall surface are all concentric ring 24-shaped surfaces. The first wall surface, the second wall surface and the third wall surface are cut off by a plane passing through the central axis of the first wall surface to form a cross section, the cross section of the first wall surface is inclined to the cross section of the second wall surface, and the cross section of the second wall surface is vertically connected with the cross section of the third wall surface.

More specifically, the thrust surface under the eccentric shaft 23 will be in contact with the plane of the lower support 25 at all times. If the grinding precision of the thrust surface under the eccentric shaft 23 is not enough, the abrasion of the thrust surface and the eccentric shaft is serious, and the energy efficiency of the single body is abnormal; in the present embodiment, the eccentric shaft 23 is provided with a pull groove at the joint of the lower thrust surface and the short shaft. Not only can avoid the phenomenon of material rework caused by poor grinding of the lower thrust surface, but also can avoid the increase of production cost. But also help to improve the efficiency.

In this embodiment, the friction between the side surface of the vane 26 and the width of the groove of the cylinder 21 during reciprocating operation can be reduced by adding a pull groove to the side surface of the vane 26. Thereby improving the energy efficiency of the compressor monomer; the eccentric shaft 23 is added with a pull groove design at the joint of the lower thrust surface and the short shaft. Not only can avoid the phenomenon of material rework caused by poor grinding of the lower thrust surface, but also can avoid the increase of production cost. But also help to improve the efficiency.

Example 2

In an exemplary embodiment of the present invention, the present embodiment discloses a compressor, which includes the rotary compressor pump 15 as described in embodiment 1.

It can be understood that the compressor in this embodiment includes a top cover 11, a housing 12, a stator 13, a rotor 14, a pump 15, a foot rest 16, a filter flask 17 and a foot rest 16, and the specific connection manner is that the housing 12 is opened, the top cover 11 is connected to the opening of the housing 12, the stator 13 is disposed in the housing 12, the rotor 14 passes through the stator 13, the rotor 14 is connected to the pump 15, wherein the rotor 14 and the pump 15 are disposed in the housing 12; the bottom of the shell 12 is connected with a foot rest 16; the housing 12 is also connected to a filter flask 17.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary compressor pump comprises a pump body and is characterized in that blade pull grooves are formed in the front side and the rear side of each blade of the pump body, and the width of each blade pull groove is equal; an eccentric shaft pull groove is formed in the joint of the lower thrust surface of the eccentric shaft of the pumping body and the short shaft.

2. The rotary compressor pump according to claim 1, wherein the plurality of vanes of the pump body are provided, and each vane is provided with a vane pull groove.

3. The rotary compressor pump according to claim 1, wherein the vane pull groove on the front side and the vane pull groove on the back side of the vane are both provided in the middle of the vane.

4. The rotary compressor pump according to claim 1, wherein the vane pull grooves have a rectangular cross-section.

5. The rotary compressor pump according to claim 1, wherein the eccentric shaft pull groove has a right trapezoid cross section.

6. The rotary compressor pump according to claim 5, wherein the wall surfaces of the eccentric shaft slot comprise a first wall surface, a second wall surface and a third wall surface, and the first wall surface, the second wall surface and the third wall surface are all concentric annular surfaces.

7. The rotary compressor pump according to claim 6, wherein the first wall, the second wall and the third wall are sectioned by a plane passing through a central axis of the first wall to form a cross-section, wherein the cross-section of the first wall is inclined to the cross-section of the second wall, and the cross-section of the second wall is perpendicular to the cross-section of the third wall.

8. The rotary compressor pump according to claim 1, wherein the wall surface of the vane slot comprises a first vertical surface, a second vertical surface and a bottom surface, wherein the bottom surface is a plane.

9. The rotary compressor pump according to claim 1, wherein the vane pull grooves have the same depth.

10. A compressor comprising a rotary compressor pump according to any one of claims 1 to 9.