CN212536076U

CN212536076U - Compressor and upper shell assembly thereof

Info

Publication number: CN212536076U
Application number: CN202020775441.XU
Authority: CN
Inventors: 李盖敏
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-02-12
Anticipated expiration: 2030-05-11

Abstract

The utility model discloses a compressor and shell assembly thereon, go up shell assembly and include casing and check valve subassembly, check valve subassembly installs on last casing and include the valve casing and have the valve seat board of valve opening, and the upper end of valve casing is equipped with the exhaust hole, and the lower extreme of valve casing is opened and is had the shirt rim of outside extension, and the lower extreme in order to seal the valve casing is welded with the lower surface resistance welding of shirt rim to the upper surface of valve seat board. The utility model discloses a go up casing assembly's check valve subassembly simple to operate, simple structure, reliability height, production efficiency height, with low costs.

Description

Compressor and upper shell assembly thereof

Technical Field

The utility model relates to a compressor technical field specifically, relates to a last casing assembly of compressor and compressor that has this last casing assembly.

Background

In a refrigeration system, when a compressor is stopped from a last operation to restart, a pressure difference between a suction side and a discharge side of the compressor must be within a predetermined range to restart the compressor, for example, in the case of a rolling rotor type compressor, the pressure difference must be within 1kgf/cm2, or the compressor cannot be restarted, so that a rapid start function cannot be realized.

Meanwhile, after the compressor is stopped, a refrigerant in the system may enter the compressor through the exhaust pipe, so that the refrigerant is deposited in the compressor, the viscosity of lubricating oil is reduced due to the fact that the refrigerant is dissolved too much in an oil pool at the bottom of the compressor, and when the compressor is started again, the viscosity of the lubricating oil in the compressor is reduced, so that abnormal abrasion is caused, and the reliability of the compressor is reduced. For this reason, the related art proposes to provide the discharge check valve on the compressor, however, the check valve in the related art has problems of complicated structure, difficult mounting operation on the compressor casing, high cost and low reliability.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model discloses an aspect provides a epitheca subassembly of compressor, this epitheca subassembly's check valve simple structure, simple to operate, reliability height, production efficiency height, with low costs.

Another aspect of the present invention provides a compressor.

The upper shell assembly of the compressor according to an embodiment of the first aspect of the present invention includes an upper shell and a check valve assembly, the check valve assembly being installed on the upper shell, the check valve assembly including: the exhaust valve comprises a valve shell, a valve core and a valve core, wherein the upper end of the valve shell is provided with an exhaust hole, and the lower end of the valve shell is open and is provided with a skirt edge extending outwards; the valve seat board, the upper surface of valve seat board with the lower surface resistance welding of shirt rim welds in order to seal the lower extreme of valve casing, the valve seat board is equipped with the valve hole.

According to the utility model discloses in the last casing subassembly of compressor, the check valve subassembly, the lower extreme of valve casing is opened and is had the shirt rim of outside extension, the lower surface of shirt rim and the upper surface welding of valve seat board are with the lower extreme of closed valve casing, from this with the lower terminal surface welding of valve seat board and valve casing, simple to operate, this check valve subassembly simple structure, reliability height. And the connection is realized by adopting a resistance welding mode, the production efficiency is relatively high, the investment cost is reduced, and the operation is relatively simple. Further, the resistance welding generates a small amount of heat, and has a small influence on deformation of the valve seat plate, so that the sealing property at the valve seat plate is less influenced by welding.

In some embodiments, the one-way valve assembly further comprises an exhaust tube connected to the exhaust vent.

In some embodiments, the periphery of the exhaust hole is provided with an inner flange extending towards the inner side of the valve shell, and the exhaust pipe is welded with the inner flange in a brazing mode.

In some embodiments, the one-way valve assembly further comprises:

the limiting piece is installed on the valve seat plate and is positioned in the valve shell, and the limiting piece is provided with a guide hole;

the guide block is movably arranged above the valve seat plate, and the upper end of the guide block is movably matched in the guide hole;

the valve plate is arranged on the guide block and used for closing and opening the valve hole;

a spring provided between a part of the guide block and the stopper, for urging the guide block toward the valve seat plate.

In some embodiments, the stopper has a basin shape, the guide hole is provided in a bottom wall of the stopper, and a peripheral edge of an opening of the stopper has an outwardly extending skirt fixed to the valve seat plate.

In some embodiments, the retaining member has a through hole in a peripheral wall thereof.

In some embodiments, the skirt is welded or bolted to the valve seat plate.

In some embodiments, the skirt is resistance welded to the valve seat plate.

In some embodiments, the lower surface of the guide block is provided with a threaded hole, and the valve plate is fixed on the lower surface of the guide block through a screw matched in the threaded hole.

According to the utility model discloses a compressor of the embodiment of second aspect includes: the casing, the casing includes casing, last casing subassembly and lower casing, the last casing subassembly of compressor that the epitheca subassembly is any above-mentioned embodiment, the last casing of going up casing subassembly is installed the top of casing, the casing is installed down the bottom of casing.

Drawings

Fig. 1 is a schematic structural diagram of a compressor according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an upper shell assembly of a compressor according to an embodiment of the present invention.

Fig. 3 is a cross-sectional view of the one-way valve assembly of fig. 2.

FIG. 4 is an enlarged partial schematic view of the one-way valve assembly of FIG. 3.

Fig. 5 is a schematic view of the valve housing of the one-way valve assembly of fig. 3.

Fig. 6 is a schematic view of a stop of the one-way valve assembly of fig. 3.

Reference numerals:

the compressor (100) is provided with a compressor,

the upper shell assembly 10, the upper shell 1, the check valve assembly 2, the valve shell 21, the exhaust hole 211, the skirt 212, the inner flange 213, the exhaust pipe 22, the valve seat plate 23, the valve hole 231, the limiting member 24, the guide hole 241, the skirt 242, the through hole 243, the guide block 25, the flange 251, the threaded hole 252, the valve sheet 26, the spring 27, the screw 3, the process pipe 4,

a housing 20 and a lower housing 30.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

A compressor and an upper shell assembly according to an embodiment of the present invention are described below with reference to the accompanying drawings.

As shown in fig. 1, a compressor 100 according to an embodiment of the present invention includes a casing including a housing 20, an upper housing assembly installed at a top end of the housing 20, and a lower housing 30 installed at a bottom end of the housing 20. Wherein the upper shell assembly is an upper shell assembly 10 of a compressor according to an embodiment of the present invention.

An upper shell assembly of a compressor according to an embodiment of the present invention will be described with reference to fig. 2 to 6.

As shown in fig. 2 to 6, an upper shell assembly 10 of a compressor according to an embodiment of the present invention includes an upper shell 1 and a check valve assembly 2, and the check valve assembly 2 is mounted on the upper shell 1. In the compressor 100, the upper shell 1 of the upper shell assembly 10 is mounted on the top end of the shell 20.

The check valve assembly 2 includes a valve housing 21 and a valve seat plate 23. The upper end of the valve housing 21 is provided with an exhaust hole 211, and the lower end of the valve housing 21 is open and has a skirt 212 extending outward. As shown in fig. 2 and 3, the valve housing 21 has a generally circular cross-sectional outer peripheral profile, the valve housing 21 is provided at an upper end thereof with a vent hole 211, the valve housing 21 is open at a lower end thereof, and the valve housing 21 has a skirt 212 extending outward in a radial direction of the valve housing 21 at the lower end thereof.

The upper surface of the valve seat plate 23 is resistance-welded to the lower surface of the skirt 212 to close the lower end of the valve housing 21, and the valve seat plate 23 is provided with a valve hole 231. As shown in fig. 2 and 3, the valve seat plate 23 is provided below the valve housing 21 and is joined together with the skirt 212 by resistance welding to close the lower end of the valve housing 21, and the valve seat plate 23 is provided with a valve hole 231 penetrating the valve seat plate 23 in the up-down direction.

The inventor has found through research that in the prior art upper casing assembly, the valve seat plate in the check valve assembly is installed in the valve casing, and the installation of the valve seat plate in the valve casing is inconvenient and complicated. Therefore the utility model provides an upper shell subassembly has outside extension's shirt rim through the lower extreme of valve casing among the check valve subassembly in the upper shell subassembly to with the lower surface of shirt rim and the lower extreme of valve seat board's upper surface welding in order to seal the valve casing, weld the valve seat board at the lower terminal surface of valve casing from this, simple to operate, and this check valve subassembly simple structure, reliability height. Furthermore, the inventor of the present invention has found through research that, in the check valve assembly of the prior art upper housing assembly, the valve seat plate is generally installed in the valve housing by laser welding, which has low production efficiency and high investment cost. Therefore the utility model discloses with the lower terminal surface of valve seat board welding at the valve casing, when simple to operate, adopt the mode realization of resistance welding to connect, production efficiency is relatively high, has reduced investment cost moreover, and the operation is simple relatively. Further, the resistance welding generates a small amount of heat, and has a small influence on deformation of the valve seat plate, so that the sealing property at the valve seat plate is less influenced by welding.

In some embodiments, the one-way valve assembly 2 further includes an exhaust tube 22, the exhaust tube 22 being connected to the exhaust vent 211. As shown in fig. 2 and 3, the lower end of the exhaust pipe 22 penetrates into the valve housing 21 through the exhaust hole 211, and the lower end of the exhaust pipe 22 is connected to the upper end of the valve housing 21.

In some embodiments, the periphery of the exhaust hole 211 is provided with an inward flange 213 extending toward the inside of the valve housing 21, and the exhaust pipe 22 is welded to the inward flange 213. As shown in fig. 5, the top end of the valve housing 21 is provided with an inward flange 213, at least a part of the circumference of which forms the exhaust hole 211, and the exhaust pipe 22 penetrates the exhaust hole 211 and is welded to the inward flange 213. The top end of the base material of the valve housing 21 is punched downward with a downward extending burring to form the exhaust hole 211 and the burring 213, for example, by means of punching.

In some embodiments, the exhaust pipe 22 is brazed to the inner flange 213. The exhaust pipe 22 and the inner flanging 213 are brazed in the furnace, so that the exhaust pipe 22 and the inner flanging 213 of a plurality of check valve assemblies can be welded in the furnace at one time, and the production efficiency is improved.

In some embodiments, check valve assembly 2 further includes a retainer 24, a guide block 25, a valve plate 26, and a spring 27.

The stopper 24 is mounted on the valve seat plate 23 and positioned in the valve housing 21, and the stopper 24 is provided with a guide hole 241. As shown in fig. 2 and 3, the stopper 24 is provided in the valve housing 21, and the lower end of the stopper 24 is connected to the upper end of the valve seat plate 23. The stopper 24 has a guide hole 241 penetrating the stopper 24 in the vertical direction at an upper end thereof.

The guide block 25 is movably disposed above the valve seat plate 23 and an upper end of the guide block 25 is movably fitted in the guide hole 241. As shown in fig. 3, the guide block 25 is movably provided above the valve seat plate 23, an upper end of the guide block 25 is fitted in the guide hole 241 movably with respect to the stopper 24, and the rest of the guide block 25 is located between the upper end of the stopper 24 and the valve seat plate 23.

Valve sheet 26 is mounted on guide block 25 for closing and opening valve hole 231. As shown in fig. 2 to 4, the valve plate 26 is installed at the lower end of the guide block 25, and in a projection plane perpendicular to the up-down direction, the peripheral contour of the valve hole 231 is located in the peripheral contour of the valve plate 26, so that when the guide block 25 drives the valve plate 26 to move downward, at least a part of the valve plate 26 can be attached to the valve seat plate 23 to close the valve hole 231.

A spring 27 is provided between a part of the guide block 25 and the stopper 24 for urging the guide block 25 toward the valve seat plate 23. As shown in fig. 2-4, the lower end of the guide block 25 is provided with a flange 251, the spring 27 surrounds the guide block 25 and is located above the flange 251, the lower end of the spring 27 abuts against the upper surface of the flange 251, and the upper end of the spring 27 abuts against the inner surface of the upper end of the stopper 24. The spring 27 has an elastic force pushing the guide 25 downward so that the valve sheet 26 can close the valve hole 231.

When the compressor 100 operates, the compressor 100 discharges air through the discharge pipe 22, the gas pressure at the lower part of the valve sheet 26 is higher than that at the upper part of the valve sheet 26, the spring 27 is compressed, at this time, the valve sheet 26 is separated from the valve seat plate 23, the valve sheet 26 moves upward along with the guide block 25, the valve sheet 26 stops rising when rising to a certain height, that is, the guide block 25 contacts with the stopper 24, the check valve assembly 2 is opened, at this time, high-pressure refrigerant gas inside the casing of the compressor 100 enters the check valve assembly 2 through a gap between the valve sheet 26 and the valve seat plate 26, and is further discharged out of the compressor 100 through.

When compressor 100 stops, the gas pressure difference force between the lower portion of valve plate 26 and the upper portion of valve plate 26 is smaller than the elastic force of spring 27, spring 27 drives guide block 25 to move downward, so as to drive valve plate 26 to move downward together with guide block 25 until contacting with valve seat plate 23, the check valve assembly is closed, and the gas on the upper portion of valve plate 26, i.e., the gas in exhaust pipe 22, cannot enter the lower portion of valve plate 26, i.e., the interior of compressor 100, so as to play a sealing role of the check valve assembly.

In some embodiments, the position-limiting member 24 has a basin shape, the guiding hole 241 is disposed on the bottom wall of the position-limiting member 24, the periphery of the opening of the position-limiting member 24 has an outwardly extending skirt 242, and the skirt 242 is fixed to the valve seat plate 23. As shown in fig. 6, the stopper member 24 is substantially in the shape of a basin that opens downward, and the stopper member 24 includes a bottom wall that is connected to an upper end of the peripheral wall and is the upper end of the stopper member 24, and a peripheral edge of a lower end of the peripheral wall is provided with a skirt 242 that extends outward, and a lower surface of the skirt 242 is fixed to an upper surface of the valve seat plate 23. Specifically, the skirt 242 and the valve seat plate 23 may be welded together, and preferably, the skirt 242 and the valve seat plate 23 are resistance welded, which is convenient in operation and improves production efficiency. The connection mode of the skirt 242 and the valve seat plate 23 is not limited to this, and may be, for example, a bolt connection.

In some embodiments, the retaining member 24 has a through hole 243 in its peripheral wall. The through hole 243 is formed in the peripheral wall of the limiting member 24, so that stress of the limiting member 24 can be released, fatigue of the limiting member 24 is reduced, and the service life of the limiting member is prolonged.

In some embodiments, the lower surface of guide block 25 is provided with a threaded hole 252, and valve sheet 26 is fixed to the lower surface of guide block 25 by screw 3 fitted in threaded hole 252. As shown in fig. 3 and 4, a screw hole 252 extending upward is formed in a lower surface of guide block 25, valve sheet 26 is provided with a through hole penetrating valve sheet 26 in the vertical direction, and screw 3 sequentially extends into through hole and screw hole 252 from valve hole 231 to fixedly connect valve sheet 26 and guide block 25 by screw 3.

In some embodiments, the upper shell assembly 10 of the compressor further comprises a process tube 4, a lower end of the process tube 4 passing through an upper end of the upper shell 1 and being connected to an upper end of the upper shell 1. The inventor has found that the exhaust pipe 22 provided in the check valve assembly 2 is generally not beneficial to the production processes of oil sealing, vacuum pumping, etc. in the production of the compressor 100, and therefore the process pipe 4 is provided on the upper shell 1 for the oil sealing process.

An upper shell assembly 10 of a compressor according to one specific example of the present invention is described below with reference to fig. 2 to 6.

As shown in fig. 2, the upper shell assembly 10 of the compressor includes an upper shell 1, a check valve assembly 2, a screw 3 and a process pipe 4, wherein the lower end of the process pipe 4 passes through the upper end of the upper shell 1 and is connected with the upper end of the upper shell 1, and the process pipe is used for oil sealing and other processes during the production of the compressor.

The check valve assembly 2 includes a valve housing 21, an exhaust pipe 22, a valve seat plate 23, a retainer 24, a guide block 25, a valve sheet 26, and a spring 27. The upper end of the valve housing 21 is provided with an exhaust hole 211, the periphery of the exhaust hole 211 is provided with an inward flange 213 extending toward the inside of the valve housing 21, and the lower end of the valve housing 21 is open and has a skirt 212 extending outward. The lower end of the exhaust pipe 22 penetrates into the valve housing 21 through the exhaust hole 211, and the exhaust pipe 22 is welded to the inward turned edge 213. Preferably, the exhaust pipe 22 is brazed to the inner flange 213.

The valve seat plate 23 is provided below the valve housing 21 and welded to the skirt 212 to close the lower end of the valve housing 21, and the valve seat plate 23 is provided with a valve hole 231 penetrating the valve seat plate 23 in the up-down direction. Preferably, the upper surface of the valve seat plate 23 is resistance welded to the lower surface of the skirt 212.

The stopper 24 is provided in the valve housing 21 and has a substantially basin shape opening downward, and the stopper 24 includes a bottom wall connected to an upper end of a peripheral wall, and a peripheral wall having a lower end provided with an outwardly extending skirt 242, and a lower surface of the skirt 242 is fixed to an upper surface of the valve seat plate 23, for example, by welding or bolting. Preferably, the skirt 242 is resistance welded to the valve seat plate 23.

The bottom wall of the limiting member 24 is provided with a guiding hole 241 penetrating through the bottom wall along the vertical direction, and the peripheral wall of the limiting member 24 is provided with a through hole 243 for releasing the stress of the limiting member.

The guide block 25 is movably disposed above the valve seat plate 23, an upper end of the guide block 25 is fitted in the guide hole 241 movably with respect to the stopper 24, and the rest of the guide block 25 is located between the upper end of the stopper 24 and the valve seat plate 23. The lower end of the guide block 25 is provided with a flange 251, and the lower surface of the guide block 25 is provided with a screw hole 252 extending upward.

Valve sheet 26 is mounted on the lower surface of flange 251, and in the projection plane perpendicular to the up-down direction, the outer peripheral contour of valve hole 231 is located in the outer peripheral contour of valve sheet 26, valve sheet 26 is provided with a through hole penetrating valve sheet 26 along the up-down direction, and screw 3 sequentially extends into through hole and screw hole 252 from valve hole 231, so that valve sheet 26 and guide block 25 are fixedly connected through screw 3.

The spring 27 surrounds the guide 25 and is located above the flange 251, the lower end of the spring 27 abuts the upper surface of the flange 251, and the upper end of the spring 27 abuts the inner surface of the upper end of the stopper 24. The spring 27 has an elastic force pushing the guide 25 downward so that the valve sheet 26 can close the valve hole 231.

According to the utility model discloses an upper housing assembly of compressor, check valve subassembly pass through the lower extreme of valve casing and have the shirt rim of outside extension to with the lower surface of shirt rim and the upper surface welding of valve seat board with the lower extreme of closed valve casing, weld the valve seat board at the lower terminal surface of valve casing from this, simple to operate, and this check valve subassembly simple structure, reliability are high. But also the valve seat plate and the skirt edge are welded by resistance welding, the deformation influence on the valve seat plate is small, the influence on the sealing performance of the valve seat plate is reduced, and the production efficiency is relatively high. The exhaust pipe and the inner flanging are brazed, so that the production efficiency is improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like 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 present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. An upper shell assembly of a compressor, comprising an upper shell and a check valve assembly mounted on the upper shell, the check valve assembly comprising:

the exhaust valve comprises a valve shell, a valve core and a valve core, wherein the upper end of the valve shell is provided with an exhaust hole, and the lower end of the valve shell is open and is provided with a skirt edge extending outwards;

the valve seat board, the upper surface of valve seat board with the lower surface resistance welding of shirt rim welds in order to seal the lower extreme of valve casing, the valve seat board is equipped with the valve hole.

2. The upper shell assembly of a compressor, according to claim 1, wherein said check valve assembly further comprises a discharge pipe connected to said discharge hole.

3. The upper shell assembly of a compressor according to claim 2, wherein the discharge hole is provided at a periphery thereof with an inner flange extending toward an inner side of the valve housing, and the discharge pipe is brazed to the inner flange.

4. The upper shell assembly of a compressor according to claim 1, wherein the check valve assembly further comprises:

5. The upper shell assembly of a compressor as set forth in claim 4, wherein said retainer is basin-shaped, said guide hole being provided in a bottom wall of said retainer, a peripheral edge of an opening of said retainer having an outwardly extending skirt fixed to said valve seat plate.

6. The upper shell assembly of a compressor, according to claim 5, wherein a through hole is provided on a peripheral wall of said retainer.

7. The upper shell assembly of a compressor as set forth in claim 5, wherein said skirt is welded or bolted to said valve seat plate.

8. The compressor upper housing assembly of claim 6, wherein the skirt is resistance welded to the valve seat plate.

9. The upper shell assembly of a compressor, according to claim 4, wherein a threaded hole is formed in a lower surface of the guide block, and the valve plate is fixed to the lower surface of the guide block by a screw fitted into the threaded hole.

10. A compressor, comprising: a casing including a shell, an upper shell assembly of the compressor of any one of claims 1 to 9, the upper shell of the upper shell assembly being mounted at a top end of the shell, and a lower shell being mounted at a bottom end of the shell.