CN221525064U - Structure of making an uproar falls in oil free compressor's air inlet valve restriction stroke - Google Patents

Abstract

The utility model discloses an air inlet valve stroke limiting and noise reducing structure of an oil-free compressor, which is characterized by comprising a valve plate, a limiting block, a valve gasket and a valve screw, wherein the bottom of the valve plate is provided with a mounting hole groove corresponding to the valve plate, the limiting block is pressed against the valve plate, the valve gasket is tightly attached to the limiting block, and the valve screw sequentially penetrates through the valve gasket, the limiting block and the valve plate to be connected and fixed with the valve plate. The utility model has good stability, effectively prolongs the service life of the valve plate and reduces the working noise of the compressor under the condition of ensuring the working flow of the compressor.

Description

Structure of making an uproar falls in oil free compressor's air inlet valve restriction stroke

Technical Field

The utility model relates to the technical field of compressors, in particular to a stroke limiting and noise reducing structure of an air inlet valve of a compressor.

Background

The compressor is one of the most important components of the current refrigeration system, and sucks low-temperature and low-pressure refrigerant gas from the air suction pipe, drives the piston to compress the refrigerant gas through the operation of the motor, and then discharges the high-temperature and high-pressure refrigerant gas to the exhaust pipe to provide power for the refrigeration cycle, thereby realizing the refrigeration cycle of compression, condensation, expansion and evaporation. The compressor generally consists of a housing, a motor, a cylinder, a piston, control equipment and a cooling system. The existing cylinder cover is provided with three pressing points for pressing the middle part of the limiter, but because the existing limiter is thinner, when the assembly height of the limiter on the valve plate is higher than a design value, the middle supporting point can press the middle part of the limiter and generate elastic deformation, so that the design limiting stroke of the limiter is reduced, and the design limiting stroke is uncontrollable under the influence of the depth of an exhaust groove and the machining error of the limiter, thereby directly influencing the opening and closing stroke of an exhaust valve plate, and further influencing the performance of the compressor. As chinese patent publication No. CN205089566U, a cylinder head assembly and a compressor having the same are disclosed, the cylinder head assembly comprising: the cylinder cover, be limited with the open cavity of one end in the cylinder cover, be equipped with along its circumference extension's sealing rib on the terminal surface of cylinder cover one end, the valve plate with the open end of cylinder cover links to each other and sealing rib ends the valve plate, be equipped with the stopper on the valve plate, be equipped with at least some stretching out on the cylinder cover the end portion of supporting of cavity, end portion end and compress tightly the both ends of stopper. According to the cylinder head assembly, the circumferential sealing ribs are arranged on the end face of the cylinder head assembly, so that the air seal of the compressor is ensured, the refrigerating capacity of the compressor is ensured, and the stopping part is arranged in the cylinder cover and can stop and press the limiter, so that the exhaust valve plate of the cylinder head assembly cannot shake, and the refrigerating capacity and the noise stability of the compressor are ensured. Although the sealing effect is better improved, in the actual machining process, the structure of the limiter is relatively complex and the machining error is relatively large due to the influence of the precision of the existing machining technology. For this reason, there is a need for further improvements in the art.

Disclosure of Invention

The utility model aims to solve the defects of the prior art and provides the stroke limiting and noise reducing structure of the air inlet valve of the oil-free compressor, which is simple in structure, stable and reliable.

The utility model adopts the following technical proposal to realize the aim: the utility model provides an oil-free compressor's air inlet valve restriction stroke and structure of making an uproar falls, its characterized in that includes valve plate, valve block, stopper, valve gasket and valve screw, and the bottom of valve plate is provided with the mounting hole groove that corresponds with the valve block, and the stopper roof pressure is on the valve block, and the valve gasket hugs closely the stopper, and valve screw passes valve gasket, stopper, valve block in proper order and valve plate connection is fixed.

As further explanation of the scheme, the contact end of the limiting block corresponding to the valve plate is provided with an inclined plane, and the maximum lift of the valve plate when being opened is limited.

Further, the limiting block is in the form of a limiting plate, and the limiting block and the valve gasket are embedded into the mounting hole groove.

Further, a spacing distance is formed between the inclined surface of the limiting block and the valve plate in the vertical direction, so that the valve plate can swing within the spacing distance.

Further, the limiting block is a nonmetallic component, and is made of nonmetallic materials, so that sound and vibration generated when the suction reducing valve plate is bent and flapped are reduced.

Further, the mounting hole groove is a strip-shaped hole groove, and the air inlet hole of the valve plate is communicated with the mounting hole groove.

Further, an annular groove is formed in the bottom of the valve plate and is used for accommodating the sealing ring.

The beneficial effects achieved by adopting the technical proposal of the utility model are that.

The utility model adopts the structure of limiting travel and reducing noise of the air inlet valve of the oil-free compressor mainly composed of the valve plate, the limiting block, the valve gasket and the valve screw, wherein the limiting block is a non-metal travel limiting block which is made of different materials from the metal valve plate, limits the maximum lift of the valve plate when being opened, and adopts the limiting block made of non-metal materials, thereby being capable of influencing and absorbing and reducing the sound and vibration generated when the valve plate is bent and beaten, not influencing the original clearance design of the compressor, effectively prolonging the service life of the valve plate and reducing the working noise of the compressor under the condition of ensuring the working flow of the compressor.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Reference numerals illustrate: 1. the valve plate 1-1, the annular groove 1-2, the mounting hole groove 1-3, the air inlet hole 2, the valve plate 3, the limiting block 3-1, the inclined plane 4, the valve gasket 5 and the valve screw.

Detailed Description

In the description of the present utility model, it should be noted that, for the azimuth words such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present utility model that the device or element referred to must have a specific azimuth configuration and operation.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such features, and in the description of the utility model, "at least" means one or more, unless clearly specifically defined otherwise.

In the present utility model, unless explicitly stated and limited otherwise, the terms "assembled," "connected," and "connected" are to be construed broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; can be directly connected or connected through an intermediate medium, and can be communicated with the inside of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless specified and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "below," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply representing the first feature as having a higher level than the second feature. The first feature being "above," "below," and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or simply indicating that the first feature is level below the second feature.

The following description of the specific embodiments of the present utility model is further provided with reference to the accompanying drawings, so that the technical scheme and the beneficial effects of the present utility model are more clear and definite. The embodiments described below are exemplary by referring to the drawings for the purpose of illustrating the utility model and are not to be construed as limiting the utility model.

As shown in fig. 1, the utility model relates to an air inlet valve stroke limiting and noise reducing structure of an oil-free compressor, which comprises a valve plate 1, a valve plate 2, a limiting block 3, a valve gasket 4 and a valve screw 5, wherein an annular groove 1-1 is arranged at the bottom of the valve plate 1, and the annular groove 1-1 is used for embedding a sealing ring. The bottom of valve plate 1 is provided with the mounting hole groove 1-2 that corresponds with valve block 2, and stopper 3 roof pressure is on valve block 2, and the stopper 3 is hugged closely to the valve gasket, and valve screw 5 passes valve gasket 4, stopper 3 in proper order, and valve block 2 is connected fixedly with valve plate 1, and valve block, stopper, valve gasket from top to bottom stack in proper order and install. The mounting hole groove is a strip-shaped hole groove 1-2, and the air inlet hole 1-3 of the valve plate 1 is communicated with the mounting hole groove 1-2. The valve block 2 is a metal sheet, the limiting block is a nonmetal limiting block, and the combination of the metal valve block and the nonmetal limiting block can reduce the sound and vibration generated when the suction valve block is bent and flapped.

The contact end of the limiting block 3 corresponding to the valve plate 2 is provided with an inclined surface 3-1, and an interval distance is reserved between the inclined surface and the valve plate in the vertical direction, so that the valve plate can swing within the interval distance, and the valve plate lift can be adjusted according to the air flow requirement of the compressor.

Compared with the prior art, the valve plate has the advantages that the original structure is a reinforcing sheet combined structure, and the valve plate lift is large; the valve plate lift can be adjusted according to the air quantity requirement of the compressor, the service life of the valve plate is effectively prolonged and the working noise of the compressor is reduced under the condition of ensuring the working flow of the compressor.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present utility model.

Claims (7)

1. The utility model provides an oil-free compressor's air inlet valve restriction stroke and structure of making an uproar falls, its characterized in that includes valve plate, valve block, stopper, valve gasket and valve screw, and the bottom of valve plate is provided with the mounting hole groove that corresponds with the valve block, and the stopper roof pressure is on the valve block, and the valve gasket hugs closely the stopper, and valve screw passes valve gasket, stopper, valve block in proper order and valve plate connection is fixed.

2. The structure for limiting stroke and reducing noise of an air inlet valve of an oil-free compressor according to claim 1, wherein an inclined plane is arranged at a contact end of the limiting block corresponding to the valve plate, and the maximum lift of the valve plate when the valve plate is opened is limited.

3. The structure for limiting stroke and reducing noise of an intake valve of an oil-free compressor according to claim 1 or 2, wherein the limiting block is in the form of a limiting plate, and the limiting block and the valve gasket are embedded in the mounting hole groove.

4. The oil-free compressor air intake valve stroke limiting and noise reducing structure of claim 2, wherein the inclined surface of the limiting block is vertically spaced from the valve plate.

5. The oil-free compressor air intake valve stroke limiting and noise reducing structure of claim 1, wherein the limiting block is a nonmetallic component.

6. The oil-free compressor air intake valve stroke limiting and noise reducing structure of claim 1, wherein the mounting hole groove is a bar-shaped hole groove, and the air intake hole of the valve plate is communicated with the mounting hole groove.

7. The stroke limiting and noise reducing structure of an intake valve of an oil-free compressor as claimed in claim 1, wherein the bottom of the valve plate is provided with an annular groove for receiving a sealing ring.