CN112177930A

CN112177930A - Pump body subassembly, compressor and indirect heating equipment

Info

Publication number: CN112177930A
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: 2021-01-05
Anticipated expiration: 2039-07-03
Also published as: CN112177930B

Abstract

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

Description

Pump body subassembly, compressor and indirect heating equipment

Technical Field

The invention 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 cavity at the tail part of the sliding sheet is periodically increased and reduced by mainly utilizing the reciprocating motion of the sliding sheet, and the processes of air suction, compression and exhaust are realized. However, the mounting of the valve plate 21' presents certain problems: the screw cannot directly press the valve plate 21', resulting in a possibility of a large leakage and poor assemblability.

As shown in fig. 1 to 3, in the conventional pump block assembly, the valve plate 21 'and the suction valve plate 22' are fixed in the valve plate mounting cavity 13 'of the cylinder 10' mainly by the valve plate screws. In order to ensure that the valve plate 21 'and the suction valve plate 22' can be installed in the valve plate installation cavity 13 ', the width of the valve plate installation cavity 13' is generally larger than the thickness of the valve plate 21 'and the suction valve plate 22', so that a certain gap exists after the valve plate installation cavity 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 the sliding vane compression cavity is caused to have larger leakage.

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

Disclosure of Invention

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

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

Further, the compressing structure compresses the valve plate assembly on the wall of the side, close to the sliding sheet cavity, of the valve plate mounting cavity.

And 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; and the air suction valve plate is arranged on one side of the valve plate close to the sliding sheet cavity and is tightly pressed with the wall of the valve plate mounting cavity.

Further, the cylinder has radial dodge the hole, and the part that compresses tightly the valve plate subassembly on the compact structure can pass radial dodge the hole and stretch into the valve plate installation intracavity.

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

Further, the packing structure includes: a rod portion; a head portion at one end of the stem portion; the compressing flange is arranged on the rod part, the compressing flange and the head part are arranged at intervals, and the compressing flange compresses the valve plate assembly.

Further, the compressing structure comprises a filling piece, and the filling piece fills a gap between the valve plate mounting cavity and the valve plate assembly.

Further, the pump body assembly still includes: the sliding sheet is correspondingly arranged at the sliding sheet cavity; the roller is movably arranged in the roller compression cavity; the bent axle, bent axle eccentric settings are in the cylinder and drive roller rotates, satisfy between the eccentric volume e of bent axle, the height H of cylinder and the width B of gleitbretter: H.B/e is more 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 sheet satisfy the following condition: B/H is more than or equal to 0.12 and less than or equal to 0.5.

Further, the valve plate assembly has a suction passage and a discharge passage, wherein a suction passage area S1 of the suction passage and a discharge passage area S2 of the discharge passage satisfy: 2.5 is less than or equal to S1/S2 is less than or equal to 5.

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

According to another aspect of the invention, a heat exchange device is provided, which comprises the compressor.

Further, the heat exchange device is an air conditioner.

By applying the technical scheme of the invention, the pump body assembly comprises the cylinder, the valve plate assembly and the compression structure. The cylinder is provided with a roller compression cavity, a sliding vane cavity and a valve plate installation cavity which are communicated; the valve plate assembly is arranged in the valve plate mounting cavity; at least one part of the compressing structure extends 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, the compressing structure is arranged, and the valve plate assembly can be compressed on the wall of the valve plate mounting cavity through the compressing structure, so that the stability of the valve plate assembly can be effectively guaranteed in the processes of air suction, compression and exhaust of the pump body assembly, and the air leakage caused by instability of the valve plate assembly is effectively reduced. Therefore, the installation manufacturability of the valve plate is effectively improved, the assembly and installation efficiency of the pump body assembly is improved, and the installation reliability of the valve plate assembly is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view showing the connection of a cylinder to a valve plate assembly according to 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 prior art pump body assembly;

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

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

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

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

FIG. 8 is a graph illustrating a relationship between an eccentricity e of a crankshaft, a height H of a cylinder, and a width B of a vane, and a coefficient of performance cycle COP of a 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 cycle COP of the compressor.

Wherein the figures include the following reference numerals:

10', a cylinder; 13' and 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 plate cavity; 13. a valve plate mounting cavity; 14. radial avoiding holes; 15. a sliding vane compression chamber; 20. a valve plate assembly; 21. a valve plate; 22. an air suction valve plate; 30. a compression structure; 31. a rod portion; 32. a head portion; 33. a pressing part; 40. sliding blades; 50. a roller; 60. a crankshaft.

Detailed Description

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

It is noted that, unless otherwise indicated, 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.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In order to solve the problem that the valve plate assembly performance of the pump body assembly is poor among the prior art, the application provides a pump body assembly, compressor and indirect heating equipment.

Wherein, indirect heating equipment includes the compressor, and the compressor has the following pump body subassembly.

It should be noted that, in the present application, the heat exchange device may be an air conditioner.

As shown in fig. 4 to 7, the pump body assembly in the present application includes a cylinder 10, a valve plate assembly 20, and a compression 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; a valve plate assembly 20 is disposed in the valve plate mounting cavity 13; at least a portion of the hold-down structure 30 extends into the valve plate mounting cavity 13 to hold the valve plate assembly 20 against the wall of the valve plate mounting cavity 13.

When using the pump body subassembly of above-mentioned structure, owing to have compact structure 30 to valve plate subassembly 20 can compress tightly on the chamber wall of valve plate installation cavity 13 through compact structure 30, thereby inhale at the pump body subassembly, compress and exhaust in-process can guarantee valve plate subassembly 20's stability effectively, effectively reduce because of the gas leakage that valve plate subassembly 20 unstable produced. Therefore, the installation manufacturability of the valve plate 21 is effectively improved, the assembly and installation efficiency of the pump body assembly is improved, and the installation reliability of the valve plate assembly 20 is improved.

Specifically, compressing structure 30 compresses valve plate assembly 20 against the wall of valve plate mounting cavity 13 on the side adjacent to slide plate cavity 12. Because pump body structure is breathing in, compression and exhaust process, need just can realize through gleitbretter chamber 12, valve plate installation cavity 13 and valve plate assembly 20's cooperation to need guarantee the sealing performance between gleitbretter chamber 12 and the valve plate installation cavity 13, so need compress tightly valve plate assembly 20 on the chamber wall that valve plate installation cavity 13 is close to gleitbretter chamber 12 one side.

Specifically, the side of the vane chamber 12 close to the valve plate mounting chamber 13 serves as a vane compression chamber 15. So arranged, when the sliding sheet 40 sucks air in the sliding sheet compression cavity 15, the air can be sucked through the valve plate assembly 20; during the exhaust process, the exhaust can also be performed through the valve plate assembly 20. So by this arrangement, it can be effectively ensured that the sliding vane 40 can perform normal suction, compression and exhaust processes in the sliding vane compression chamber 15.

In particular, in order to guarantee the proper functioning of the suction, compression and discharge processes. The valve plate assembly 20 includes a valve plate 21 and a suction valve plate 22. The air suction valve plate 22 is arranged on one side of the valve plate 21 close to the slide plate cavity 12, and the air suction valve plate 22 is tightly pressed with the cavity wall of the valve plate installation cavity 13.

Of course, the valve plate 21 may be provided with a discharge valve plate according to actual conditions.

Specifically, the cylinder 10 has a radial avoiding hole 14, and a portion of the compressing structure 30 compressing the valve plate assembly 20 can penetrate through the radial avoiding hole 14 and extend into the valve plate mounting cavity 13. Since the whole pump body structure further includes a baffle plate for sealing the cylinder 10, in order to maintain the sealing performance in the cylinder 10, the upper and lower ends of the cylinder 10 in the axial direction need to be provided with sealing baffle plates or flanges. Therefore, in order to ensure the sealing performance of the cylinder 10, the compressing structure 30 is required to compress the valve plate assembly 20 in the radial direction of the cylinder 10.

Specifically, the compressing structure 30 includes a rod 31 and a head 32 at one end of the rod 31, and the head 32 compresses the valve plate assembly 20. When so configured, it is desirable that the head 32 of the hold-down structure 30 be located within the valve plate mounting cavity 13, only to ensure that the hold-down structure 30 can firmly hold down the valve plate assembly 20.

It is also noted that when the head portion 32 at one end of the rod portion 31 is located inside the valve plate mounting chamber 13, it is necessary that the diameter of the head portion 32 is equal to or smaller than the diameter of the hole through which the head portion 32 enters the cylinder 10.

In another specific embodiment, as shown in fig. 6 and 7, the compacting structure 30 includes a shank 31, a head 32 at one end of the shank 31, and a compacting section 33. The shank 31 has a threaded section; the compression portion 33 is threaded onto the threaded section and compresses the valve plate assembly 20. When so arranged, valve plate assembly 20 is positioned between the end of stem 31 remote from head 32 and clamping portion 33, and valve plate assembly 20 is clamped by clamping portion 33. In this embodiment, it should be noted that one of the mounting manners is to measure the thickness of the pressing plate assembly, adjust the position of the pressing portion 33 on the rod portion 31 according to the thickness, directly mount the pressing portion on the valve plate assembly 20, and press the valve plate assembly 20, and during this process, after the pressing structure 30 and the valve plate assembly 20 are mounted, it is no longer necessary to adjust the position of the pressing portion 33 through a threaded portion. And another installation mode is that the compressing structure 30 and the valve plate assembly 20 are installed firstly, and then the position of the compressing part 33 on the rod part 31 is adjusted through the thread section, so that the compressing of the valve plate assembly 20 is realized.

Alternatively, in one embodiment, not shown, the compression structure 30 includes a shaft 31, a head 32 at one end of the shaft 31, and a compression flange disposed on the shaft 31. Spaced from head 32 is a hold-down flange that holds down valve plate assembly 20. Thus, the pressing structure 30 can be pressed by adjusting the distance between the head 32 at one end of the shaft 31 and the pressing structure 30.

In another embodiment, not shown, hold-down structure 30 includes a filler piece that fills the gap between valve plate mounting cavity 13 and valve plate assembly 20. With this arrangement, the space between valve plate mounting chamber 13 and valve plate assembly 20 can be filled with the filler, thereby compressing valve plate assembly 20. It should be noted that when valve plate assembly 20 is compressed in this manner, all of the space between valve plate mounting cavity 13 and valve plate assembly 20 should not be filled, since sliding vane compression cavity 15 requires suction, compression and discharge through valve plate assembly 20.

Specifically, the pump block assembly further includes a slide 40, a roller 50, and a crankshaft 60. The sliding sheet 40 is correspondingly arranged at the sliding sheet cavity 12; the roller 50 is movably arranged in the roller compression cavity 11; the crankshaft 60 is eccentrically arranged in the cylinder 10 and drives the roller 50 to rotate, and the eccentricity e of the crankshaft 60, the height H of the cylinder 10 and the width B of the slide sheet 40 satisfy the following conditions: H.B/e is more than or equal to 10 and less than or equal to 28. By so arranging, as shown in fig. 8, the cycle performance coefficient COP of the compressor can be ensured within an optimum range.

Specifically, in order to satisfy the reliability of the operation of the vane 40, the height H of the cylinder 10 and the width B of the vane 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 a suction passage and a discharge passage, wherein a space between a suction passage area S1 of the suction passage and a discharge passage area S2 of the discharge passage satisfies: 2.5 is less than or equal to S1/S2 is less than or equal to 5. In the present application, if the suction passage area S1 is too small, insufficient suction is easily caused, resulting in a low value of 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-described embodiments of the present invention achieve the following technical effects:

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

2. the installation manufacturability of the valve plate 21 is improved, and the assembly and production efficiency is improved;

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

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

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 example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of 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 claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

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 pump body assembly, comprising:

the air 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), said valve plate assembly (20) disposed in said valve plate mounting cavity (13);

the pressing structure (30) extends into the valve plate mounting cavity (13) at least one part of the pressing structure (30) to press the valve plate assembly (20) on the wall of the valve plate mounting cavity (13).

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

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

4. The pump body assembly according to claim 1, characterized in that said valve plate assembly (20) comprises:

a valve plate (21);

the air suction valve plate (22), air suction valve plate (22) set up one side that valve plate (21) are close to gleitbretter chamber (12), just air suction valve plate (22) with the chamber wall of valve plate installation cavity (13) compresses tightly.

5. The pump body assembly according to claim 1, characterized in that the cylinder (10) has a radial relief hole (14), the portion of the compression structure (30) compressing the valve plate assembly (20) being able to penetrate through the radial relief hole (14) into the valve plate mounting cavity (13).

6. The pump body assembly according to any one of claims 1 to 5, characterized in that 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).

7. The pump body assembly according to any one of claims 1 to 5, characterized in that the compression structure (30) comprises:

a shaft (31), the shaft (31) having a threaded section;

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

a compression portion (33), the compression portion (33) being threaded onto the threaded section and compressing the valve plate assembly (20).

8. The pump body assembly according to any one of claims 1 to 5, characterized in that the compression structure (30) comprises:

a rod (31);

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

a compression flange disposed on the stem (31) spaced from the head (32), the compression flange compressing the valve plate assembly (20).

9. The pump body assembly according to any one of claims 1 to 5, characterized in that the compression structure (30) comprises a filler which fills the gap between the valve plate mounting cavity (13) and the valve plate assembly (20).

10. The pump body assembly according to any one of claims 1 to 5, further comprising:

the sliding piece (40), the sliding piece (40) is correspondingly arranged at the sliding piece cavity (12);

a roller (50), wherein the roller (50) is movably arranged in the roller compression cavity (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 sheet (40) meet the following conditions: H.B/e is more than or equal to 10 and less than or equal to 28.

11. The pump block assembly according to claim 10, characterized in that 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.

12. The pump body assembly according to claim 10, wherein the valve plate assembly (20) has a suction channel and a discharge channel, wherein between a suction channel area S1 of the suction channel and a discharge channel area S2 of the discharge channel there is satisfied: 2.5 is less than or equal to S1/S2 is less than or equal to 5.

13. A compressor, characterized by comprising a pump body assembly according to any one of claims 1 to 12.

14. A heat exchange apparatus comprising the compressor of claim 13.

15. The heat exchange device of claim 14 wherein the heat exchange device is an air conditioner.