CN112177930B

CN112177930B - Pump body assembly, compressor and heat exchange equipment

Info

Publication number: CN112177930B
Application number: CN201910595457.4A
Authority: CN
Inventors: 李成龙; 谭章银
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2023-08-25
Anticipated expiration: 2039-07-03
Also published as: CN112177930A

Abstract

The application provides a pump body assembly, a compressor and heat exchange equipment. Wherein, pump body subassembly includes: the cylinder is provided with a roller compression cavity, a sliding vane cavity and a valve plate mounting cavity which are communicated with each other; the valve plate assembly is arranged in the valve plate mounting cavity; and at least one part of the compressing structure stretches into the valve plate mounting cavity to compress the valve plate assembly on the cavity wall of the valve plate mounting cavity. The application solves the problem of poor valve plate assembling performance of the pump body component in the prior art.

Description

Pump body assembly, compressor and heat exchange equipment

Technical Field

The application relates to the field of compressor equipment, in particular to a pump body assembly, a compressor and heat exchange equipment.

Background

In the compressor adopting the rolling rotor type and piston type coupling compression technology, the periodic increase and decrease of the sliding vane tail cavity are realized mainly by utilizing the sliding vane reciprocating motion, and the suction, compression and exhaust processes are realized. But the mounting of its valve plate 21' has a certain problem: the screw cannot directly press the valve plate 21', resulting in the possibility of large leakage and poor assemblability.

As shown in fig. 1 to 3, in the conventional pump body assembly, the valve plate 21', the suction valve plate 22' is fixed in the valve plate mounting chamber 13 'of the cylinder 10' mainly by a valve plate screw. In order to ensure that the valve plate 21', the suction valve plate 22' can be mounted in the valve plate mounting cavity 13', the width of the valve plate mounting cavity 13' is generally larger than the thickness dimension of the valve plate 21 'and the suction valve plate 22', so that a certain gap exists after the valve plate is assembled, and the valve plate screw is pressed on the outer wall surface of the cylinder 10', and cannot directly press the valve plate 21', so that the valve plate 21 'and the suction valve plate 22' cannot be effectively fixed, and larger leakage of the sliding vane compression cavity is caused.

Therefore, the compressor in the prior art has the problem that the valve plate assembly performance of the pump body assembly is poor.

Disclosure of Invention

The application mainly aims to provide a pump body assembly, a compressor and heat exchange equipment, so as to solve the problem of poor valve plate assembly performance of the pump body assembly in the prior art.

In order to achieve the above object, according to one aspect of the present application, there is provided a pump body assembly comprising: the cylinder is provided with a roller compression cavity, a sliding vane cavity and a valve plate mounting cavity which are communicated with each other; the valve plate assembly is arranged in the valve plate mounting cavity; and at least one part of the compressing structure stretches into the valve plate mounting cavity to compress the valve plate assembly on the cavity wall of the valve plate mounting cavity.

Further, the valve plate assembly is pressed on the cavity wall of one side of the valve plate installation cavity, which is close to the sliding vane cavity, by the pressing structure.

Further, one side of the sliding vane cavity close to the valve plate mounting cavity is used as a sliding vane compression cavity.

Further, the valve plate assembly includes: a valve plate; the suction valve plate is arranged on one side of the valve plate, which is close to the sliding vane cavity, and is tightly pressed with the cavity wall of the valve plate mounting cavity.

Further, the cylinder is provided with a radial avoidance hole, and a part of the pressing structure, which presses the valve plate assembly, can penetrate through the radial avoidance hole and extend into the valve plate mounting cavity.

Further, the compressing structure comprises a rod part and a head part positioned at one end of the rod part, and the head part compresses the valve plate assembly.

Further, the pressing structure includes: a shank having a threaded section; a head portion located at one end of the stem portion; and the compressing part is in threaded connection with the threaded section and compresses the valve plate assembly.

Further, the pressing structure includes: a stem portion; a head portion located at one end of the stem portion; and the pressing flange is arranged on the rod part and is arranged at intervals with the head part, and the pressing flange presses the valve plate assembly.

Further, the compression structure includes a filler that fills a gap between the valve plate mounting cavity and the valve plate assembly.

Further, the pump body assembly further includes: the sliding vane is correspondingly arranged at the sliding vane cavity; the roller is movably arranged in the roller compression cavity; the crankshaft is eccentrically arranged in the cylinder and drives the roller to rotate, and the eccentric amount e of the crankshaft, the height H of the cylinder and the width B of the sliding vane meet the following conditions: H.B/e is less than or equal to 10 and less than or equal to 28.

Further, the height H of the cylinder and the width B of the sliding vane satisfy the following conditions: B/H is more than or equal to 0.12 and less than or equal to 0.5.

Further, the valve plate assembly has an intake passage and an exhaust passage, wherein the intake passage area S1 of the intake passage and the exhaust passage area S2 of the exhaust passage satisfy: S1/S2 is more than or equal to 2.5 and less than or equal to 5.

According to another aspect of the present application, there is provided a compressor comprising the pump body assembly described above.

According to another aspect of the present application, there is provided a heat exchange apparatus comprising the compressor described above.

Further, the heat exchange device is an air conditioner.

By applying the technical scheme of the application, the pump body assembly comprises a cylinder, a valve plate assembly and a compression structure. The cylinder is provided with a roller compression cavity, a sliding vane cavity and a valve plate mounting cavity which are communicated with each other; the valve plate assembly is arranged in the valve plate mounting cavity; at least a part of the compression structure stretches into the valve plate mounting cavity to compress the valve plate assembly on the cavity wall of the valve plate mounting cavity.

When the pump body assembly with the structure is used, due to the compression structure, the valve plate assembly can be compressed on the cavity wall of the valve plate mounting cavity through the compression structure, so that the stability of the valve plate assembly can be effectively ensured in the suction, compression and exhaust processes of the pump body assembly, and the air leakage caused by the instability of the valve plate assembly is effectively reduced. Therefore, the mounting manufacturability of the valve plate is effectively improved, the assembly and mounting efficiency of the pump body assembly are improved, and the mounting reliability of the valve plate assembly is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 is a schematic diagram showing the connection relationship between a cylinder and a valve plate assembly in the prior art;

FIG. 2 shows an exploded view of the cylinder and valve plate assembly of FIG. 1;

FIG. 3 shows a schematic view of a pump body assembly of the prior art;

FIG. 4 shows a schematic structural view of a pump body assembly according to an embodiment of the present application;

FIG. 5 is a schematic diagram showing the connection of the valve plate assembly of FIG. 4 to a cylinder;

FIG. 6 is a schematic view of a body assembly according to another embodiment of the present application;

FIG. 7 is a schematic diagram showing the connection of the valve plate assembly of FIG. 6 to a cylinder;

FIG. 8 shows a graph of the relationship between the eccentric amount e of the crankshaft, the height H of the cylinder, and the width B of the slide, and the coefficient of performance COP of the compressor;

fig. 9 shows a graph of the relationship between the suction passage area S1 of the suction passage and the discharge passage area S2 of the discharge passage and the coefficient of performance COP of the compressor.

Wherein the above figures include the following reference numerals:

10', a cylinder; 13', a valve plate mounting cavity; 21', a valve plate; 22', a suction valve plate; 10. a cylinder; 11. a roller compression chamber; 12. a slide cavity; 13. a valve plate mounting cavity; 14. radial avoidance holes; 15. a slide compression chamber; 20. a valve plate assembly; 21. a valve plate; 22. a suction valve plate; 30. a compacting structure; 31. a stem portion; 32. a head; 33. a pressing part; 40. a sliding sheet; 50. a roller; 60. and (3) a crankshaft.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.

In the present application, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present application.

The application provides a pump body assembly, a compressor and heat exchange equipment, and aims to solve the problem that a valve plate of the pump body assembly in the prior art is poor in assembly performance.

The heat exchange device comprises a compressor, and the compressor is provided with a pump body assembly.

In the present application, the heat exchange device may be an air conditioner.

As shown in fig. 4 to 7, the pump body assembly of the present application includes a cylinder 10, a valve plate assembly 20, and a pressing structure 30. The cylinder 10 is provided with a roller compression cavity 11, a sliding vane cavity 12 and a valve plate mounting cavity 13 which are communicated; valve plate assembly 20 is disposed in valve plate mounting chamber 13; at least a portion of compression structure 30 extends into valve plate mounting chamber 13 to compress valve plate assembly 20 against the walls of valve plate mounting chamber 13.

When the pump body assembly with the structure is used, due to the compression structure 30, the valve plate assembly 20 can be compressed on the cavity wall of the valve plate mounting cavity 13 through the compression structure 30, so that the stability of the valve plate assembly 20 can be effectively ensured in the suction, compression and exhaust processes of the pump body assembly, and the air leakage caused by the instability of the valve plate assembly 20 can be effectively reduced. Thereby effectively improving the mounting manufacturability of the valve plate 21, improving the assembly and mounting efficiency of the pump body assembly, and improving the mounting reliability of the valve plate assembly 20.

Specifically, the pressing structure 30 presses the valve plate assembly 20 against the chamber wall of the valve plate mounting chamber 13 on the side close to the slide chamber 12. Because the pump body structure is realized through the cooperation of the sliding vane cavity 12, the valve plate mounting cavity 13 and the valve plate assembly 20 when in the process of air suction, compression and air discharge, and the sealing performance between the sliding vane cavity 12 and the valve plate mounting cavity 13 needs to be ensured, the valve plate assembly 20 needs to be pressed on the cavity wall of the valve plate mounting cavity 13, which is close to one side of the sliding vane cavity 12.

Specifically, the side of the slide chamber 12 close to the valve plate mounting chamber 13 serves as a slide compression chamber 15. So configured, when the slide 40 is sucking in the slide compression chamber 15, it is possible to suck in through the valve plate assembly 20; and during the exhaust process, exhaust can also be performed through valve plate assembly 20. By this arrangement, it is possible to effectively ensure that the vane 40 can perform normal suction, compression and discharge processes in the vane compression chamber 15.

Specifically, to ensure proper performance of the suction, compression and discharge processes. Valve plate assembly 20 includes a valve plate 21 and a suction valve plate 22. The suction valve plate 22 is arranged on one side of the valve plate 21, which is close to the sliding vane cavity 12, and the suction valve plate 22 is pressed with the cavity wall of the valve plate mounting cavity 13.

Of course, depending on the actual situation, the valve plate 21 may be provided with an exhaust valve plate.

Specifically, the cylinder 10 has a radial avoidance hole 14, and a portion of the pressing structure 30 that presses the valve plate assembly 20 can extend into the valve plate mounting chamber 13 through the radial avoidance hole 14. Since the baffle plate for sealing the cylinder 10 is also included in the whole pump body structure, in order to maintain the sealing performance in the cylinder 10, the upper and lower ends in the axial direction of the cylinder 10 are also required to be provided with sealing baffle plates or flanges. Therefore, in order to secure the sealing performance of the cylinder 10, it is necessary to compress the valve plate assembly 20 by the compressing structure 30 in the radial direction of the cylinder 10.

Specifically, compression structure 30 includes a stem 31 and a head 32 at one end of stem 31, head 32 compressing valve plate assembly 20. When so positioned, it is desirable that the head 32 of the hold-down mechanism 30 be located within the valve plate mounting chamber 13, and only then is it ensured that the hold-down mechanism 30 can firmly hold down the valve plate assembly 20.

And it is also noted that when the head portion 32 at one end of the stem portion 31 is located inside the valve plate mounting chamber 13, it is necessary to satisfy that the diameter of the head portion 32 is equal to or smaller than the diameter of the hole of the head portion 32 into the cylinder 10.

In another specific embodiment, as shown in fig. 6 and 7, the pressing structure 30 includes a stem 31, a head 32 at one end of the stem 31, and a pressing portion 33. The shank 31 has a threaded section; compression portion 33 is threadably coupled to the threaded segment and compresses valve plate assembly 20. So configured, valve plate assembly 20 is positioned between an end of stem portion 31 remote from head portion 32 and compression portion 33, and valve plate assembly 20 is compressed by compression portion 33. In this embodiment, it should be noted that, in one installation manner, the thickness of the pressing plate assembly may be measured first, then the position of the pressing portion 33 on the rod portion 31 may be adjusted according to the thickness, and the pressing portion may be directly installed with the valve plate assembly 20 to compress the valve plate assembly 20, and in this process, the position of the pressing portion 33 may not be adjusted by the threaded section after the installation of the pressing structure 30 and the valve plate assembly 20 is completed. In another installation mode, the compressing structure 30 and the valve plate assembly 20 are installed first, and then the position of the compressing part 33 on the rod part 31 is adjusted through the thread segments, so that the valve plate assembly 20 is compressed.

Alternatively, in one embodiment, not shown, the compression structure 30 includes a stem 31, a head 32 at one end of the stem 31, and a compression flange provided on the stem 31. A hold down flange is spaced from head 32 and holds down flange holds down valve plate assembly 20. So configured, the hold-down structure 30 may be held down by adjusting the distance between the head 32 at one end of the stem 31 and the hold-down structure 30.

In another embodiment, not shown, the hold-down structure 30 includes a filler that fills the gap between the valve plate mounting chamber 13 and the valve plate assembly 20. So arranged, the space between the valve plate mounting chamber 13 and the valve plate assembly 20 can be filled with the filler, thereby achieving compression of the valve plate assembly 20. When valve plate assembly 20 is compressed in this manner, all the space between valve plate mounting chamber 13 and valve plate assembly 20 should not be filled, since slide compression chamber 15 needs to be sucked, compressed, and discharged through valve plate assembly 20.

Specifically, the pump body assembly also includes a slide 40, rollers 50, and a crankshaft 60. The sliding vane 40 is correspondingly arranged at the sliding vane cavity 12; the roller 50 is movably arranged in the roller compression chamber 11; the crankshaft 60 is eccentrically arranged in the cylinder 10 and drives the roller 50 to rotate, and the eccentric amount e of the crankshaft 60, the height H of the cylinder 10 and the width B of the slide 40 satisfy the following conditions: H.B/e is less than or equal to 10 and less than or equal to 28. As shown in fig. 8, by this arrangement, the coefficient of performance COP of the compressor can be ensured to be within an optimum range.

Specifically, in order to satisfy the reliability of the operation of the slide 40, the height H of the cylinder 10 and the width B of the slide 40 satisfy: B/H is more than or equal to 0.12 and less than or equal to 0.5.

As shown in fig. 9, in order to ensure that the coefficient of performance COP of the compressor does not greatly fluctuate, the valve plate assembly 20 has an intake passage and an exhaust passage, wherein the intake passage area S1 of the intake passage and the exhaust passage area S2 of the exhaust passage satisfy: S1/S2 is more than or equal to 2.5 and less than or equal to 5. In the present application, if the suction passage area S1 is too small, the shortage of suction is liable to be caused, resulting in a lower value of the coefficient of performance COP of the compressor; meanwhile, if the exhaust passage area S2 of the exhaust passage is too large, a large exhaust clearance volume occurs, which also results in a low COP.

From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

1. a new way of mounting the valve plate 21 is provided;

2. the valve plate 21 mounting manufacturability is improved, and the assembly and production efficiency are improved;

3. the reliability of the mounting of the valve plate 21 is improved.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pump body assembly, comprising:

the cylinder (10) is provided with a roller compression cavity (11), a sliding vane cavity (12) and a valve plate mounting cavity (13) which are communicated with each other;

a valve plate assembly (20), the valve plate assembly (20) being disposed in the valve plate mounting cavity (13);

the compressing structure (30) stretches into the valve plate mounting cavity (13) to compress the valve plate assembly (20) on the cavity wall of the valve plate mounting cavity (13), the air cylinder (10) is provided with a radial avoidance hole (14), and the part, which compresses the valve plate assembly (20), of the compressing structure (30) can penetrate through the radial avoidance hole (14) and stretch into the valve plate mounting cavity (13);

the compression structure (30) comprises a filler filling a gap between the valve plate mounting cavity (13) and the valve plate assembly (20);

the sliding sheets (40) are correspondingly arranged at the sliding sheet cavities (12);

a roller (50), the roller (50) being movably arranged in the roller compression chamber (11);

the crankshaft (60) is eccentrically arranged in the cylinder (10) and drives the roller (50) to rotate, and the eccentric amount e of the crankshaft (60), the height H of the cylinder (10) and the width B of the sliding sheet (40) satisfy the following conditions: H.B/e is more than or equal to 10 and less than or equal to 28;

the valve plate assembly (20) has an intake passage and an exhaust passage, wherein an intake passage area S1 of the intake passage and an exhaust passage area S2 of the exhaust passage satisfy: S1/S2 is more than or equal to 2.5 and less than or equal to 5.

2. Pump body assembly according to claim 1, characterized in that the compression structure (30) compresses the valve plate assembly (20) against the chamber wall of the valve plate mounting chamber (13) on the side close to the slide chamber (12).

3. Pump body assembly according to claim 1, characterized in that the side of the slide chamber (12) close to the valve plate mounting chamber (13) acts as a slide compression chamber (15).

4. Pump body assembly according to claim 1, wherein the valve plate assembly (20) comprises:

a valve plate (21);

the suction valve plate (22) is arranged on one side, close to the sliding vane cavity (12), of the valve plate (21), and the suction valve plate (22) is tightly pressed with the cavity wall of the valve plate mounting cavity (13).

5. Pump body assembly according to any one of claims 1 to 4, wherein the compression structure (30) comprises a stem (31) and a head (32) at one end of the stem (31), the head (32) compressing the valve plate assembly (20).

6. Pump body assembly according to any one of claims 1 to 4, wherein the compression structure (30) comprises:

-a shank (31), the shank (31) having a threaded section;

a head (32) at one end of the stem (31);

and the pressing part (33) is in threaded connection with the threaded section and presses the valve plate assembly (20).

7. Pump body assembly according to any one of claims 1 to 4, wherein the compression structure (30) comprises:

a rod (31);

a head (32) at one end of the stem (31);

and the pressing flange is arranged on the rod part (31) and is spaced from the head part (32), and the pressing flange presses the valve plate assembly (20).

8. Pump body assembly according to any one of claims 1 to 4, characterized in that between the height H of the cylinder (10) and the width B of the slide (40) is: B/H is more than or equal to 0.12 and less than or equal to 0.5.

9. A compressor comprising a pump body assembly according to any one of claims 1 to 8.

10. A heat exchange apparatus comprising the compressor of claim 9.

11. The heat exchange device of claim 10, wherein the heat exchange device is an air conditioner.