CN219366268U - Exhaust valve assembly of compressor - Google Patents

Abstract

The utility model discloses a compressor exhaust valve component, which is characterized by comprising a valve plate, an exhaust valve plate and a lift limiter, wherein the valve plate is provided with an exhaust hole, and the exhaust valve plate reciprocates between the exhaust hole and the lift limiter, and the compressor exhaust valve component is characterized in that: the valve plate is provided with a buffer elastic sheet, the buffer elastic sheet protrudes out of the surface of the valve plate and is in propping fit with the exhaust valve plate, the lift limiter is provided with a buffer air cavity, one side of the buffer air cavity, which is opposite to the exhaust valve plate, is provided with an adsorption air hole, the periphery of the buffer air cavity is provided with a small air hole, a baffle sheet is arranged in the small air hole, and the baffle sheet can swing in two directions at the inner side and the outer side of the small air hole. The utility model has the advantages of good valve plate movement stability and low compressor working noise.

Description

Exhaust valve assembly of compressor

Technical Field

The utility model relates to the technical field of compressors, in particular to a compressor exhaust valve assembly.

Background

The compressor is internally provided with a closed-loop cavity on-off realized by opening and closing the valve plate, and the piston reciprocates between two dead points of the cylinder, so that low-temperature gas introduced into the cylinder is compressed and is converted into high-temperature gas for output, and the gas is introduced and output, namely, the actions corresponding to the 'air suction' and the 'air discharge' of the compressor are realized. The valve group of the compressor comprises a valve plate, an exhaust valve plate and a lift limiter, wherein the valve plate is provided with an air suction hole and an exhaust hole, the exhaust valve plate is provided with a fixed end and a movable end, the movable end is attached to the vicinity of the exhaust hole and covers the exhaust hole, and the lift limiter is pressed on the fixed end of the exhaust valve plate. When the exhaust is carried out, the movable end of the exhaust valve plate is impacted to be lifted, the exhaust hole is opened, the gas is discharged into the inner cavity of the cylinder cover, and the lift limiter controls the lifting height of the exhaust valve plate; when in suction, the exhaust valve plate is reset to cover the exhaust hole and seal the exhaust hole due to negative pressure suction on the other side of the valve plate.

For the existing exhaust valve structure, two abnormal phenomena 1 of valve plate trembling and delayed closing are easy to occur in the movement of an exhaust valve plate, namely the delayed closing refers to the valve plate striking on a lift limiter after being opened, and the valve plate is attached to the lift limiter again after slight rebound until the valve plate starts to be closed. The valve plate is closed by the valve plate due to the small rigidity, so that the valve plate is long in closing process and slow in seating speed, and the valve plate is not closed when the piston reaches the dead point position, and the valve plate cannot fall to the valve plate until the piston moves reversely for a period of time. 2. The judder is that after the valve plate passes over the balance position, the valve plate does not slowly return to the balance position, but is flushed away in the opposite direction, so that the air valve is partially closed, the discharge of a part of air is blocked, the pressure is increased, the valve plate is flushed out of the valve plate again, and the process is repeated. The valve plate may actually contact the valve plate multiple times during the opening cycle of each valve.

The two abnormal movement phenomena can aggravate fatigue damage of the valve plate and make working noise of the compressor operation larger.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model provides the exhaust valve assembly of the compressor, which has the advantages of good valve plate movement stability and low working noise of the compressor.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a compressor discharge valve subassembly, includes valve plate, discharge valve piece and lift limiter, be provided with the exhaust hole on the valve plate, discharge valve piece reciprocating motion between exhaust hole and lift limiter, its characterized in that: the valve plate is provided with a buffer elastic sheet, the buffer elastic sheet protrudes out of the surface of the valve plate and is in propping fit with the exhaust valve plate, the lift limiter is provided with a buffer air cavity, one side of the buffer air cavity, which is opposite to the exhaust valve plate, is provided with an adsorption air hole, the periphery of the buffer air cavity is provided with a small air hole, a baffle sheet is arranged in the small air hole, and the baffle sheet can swing in two directions at the inner side and the outer side of the small air hole.

The utility model is further provided with: one end of the exhaust valve plate is fixed on the valve plate, the other end of the exhaust valve plate extends to the exhaust hole, one end of the lift limiter is pressed on the fixed end of the exhaust valve plate, the other end of the lift limiter is bent upwards to form a limiting part, and the buffer air cavity is arranged on the limiting part.

The utility model is further provided with: the part of the buffering elastic piece protruding out of the surface of the valve plate is arranged to be an arch structure.

The utility model is further provided with: one end of the exhaust hole matched with the exhaust valve plate is provided with a boss, and the exhaust valve plate is matched with the boss in a propping way.

The utility model is further provided with: and a sealing layer is arranged on the boss.

In summary, the utility model has the following beneficial effects:

compared with the prior art, the buffer air cavity is arranged on the lift limiter, the buffer air cavity is arranged in a hollow mode, the buffer air cavity is provided with the adsorption air hole towards the exhaust valve plate, the side wall of the buffer air cavity is provided with the small air hole, when exhaust is carried out, the exhaust valve plate rises and contacts with the buffer air cavity of the lift limiter, the exhaust valve plate abuts against the adsorption air hole, and the buffer air cavity is extruded, so that air in the buffer air cavity is discharged from the small air hole to form short-time negative pressure, and the exhaust valve plate is sucked through the adsorption air hole; therefore, through the structure, the exhaust valve plate is temporarily adsorbed by the buffer air cavity after impacting the lift limiter, so that the valve plate is prevented from bouncing.

Meanwhile, compared with the prior art, the valve plate is provided with the buffer elastic piece, through the protruding structure of the buffer elastic piece, after the exhaust valve plate passes through the balance position, the exhaust valve plate is supported by the buffer elastic piece, so that the exhaust valve plate is prevented from falling to the valve plate to close the exhaust hole too quickly after passing through the balance position, and the problem of valve plate tremble can be effectively avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A;

fig. 3 is an enlarged schematic view of the structure of fig. 1B.

Reference numerals: 1. a valve plate; 101. an exhaust hole; 2. an exhaust valve plate; 3. a lift limiter; 4. a buffer elastic sheet; 5. a buffer air cavity; 501. adsorption pores; 502. small pores; 6. a boss; 601. a sealing layer; 7. a baffle.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a compressor discharge valve subassembly, as shown in fig. 1-3, including valve plate 1, discharge valve piece 2 and lift limiter 3, be provided with exhaust hole 101 on the valve plate 1, discharge valve piece 2 is provided with buffering elastic piece 4 between exhaust hole 101 and lift limiter 3 reciprocating motion on the valve plate 1, buffering elastic piece 4 protrusion valve plate 1's surface, and offset the cooperation with discharge valve piece 2, be provided with buffering air cavity 5 on the lift limiter 3, buffering air cavity 5 is provided with absorption gas pocket 501 to the side of discharge valve piece 2, the week side of buffering air cavity 5 sets up little gas pocket 502, be provided with separation blade 7 in the little gas pocket 502, separation blade 7 can be at the inside and outside both sides bidirectional oscillation of little gas pocket 502.

Through the structure, after the exhaust valve plate 2 is lifted up to impact the lift limiter 4, the adsorption air hole 501 on the buffer air cavity 5 is propped against by the exhaust valve plate 2, and the buffer air cavity 5 is deformed, so that internal air is discharged from the small air hole 502, and a short negative pressure is generated in the buffer air cavity 5, so that the exhaust valve plate 3 can be temporarily adsorbed on the buffer air cavity 5 through the adsorption air hole 501, and the exhaust valve plate 2 is prevented from bouncing after impacting the lift limiter 3; after a short period of time, the external air enters the buffer air cavity 5 from the small air hole 502 again, the negative pressure is relieved, and the exhaust valve 2 pieces can fall back normally; wherein, the baffle plate 7 arranged in the small air hole 502 can swing inside and outside during air inlet and air outlet to adjust the speed of air inlet.

Meanwhile, as the buffer elastic piece 4 is arranged on the valve plate 1, and the part of the buffer elastic piece 4 protruding out of the surface of the valve plate 1 is of an arch structure, the exhaust valve plate 2 is subjected to upward supporting acting force of the buffer elastic piece 4 after crossing the balance position, so that the exhaust valve plate 2 cannot fall onto the exhaust hole 101 too quickly, the local closure of an air valve is prevented, the discharge of a part of air is further hindered, the pressure is increased as a result, the valve plate is flushed out of the valve plate again, and the problem of valve plate tremble occurs.

Further, one end of the exhaust valve plate 2 is fixed on the valve plate 1, the other end extends to the exhaust hole 101, one end of the lift limiter 3 is pressed on the fixed end of the exhaust valve plate 2, the other end is bent upwards to form a limiting part 301, and the buffer air cavity 5 is arranged on the limiting part 301; through the above structure, one end of the exhaust valve plate 2 is fixed, and the other end can swing up and down between the exhaust hole 101 and the limiting part 301 flexibly, so as to realize opening and closing of the exhaust hole 101.

Further, referring to fig. 3, the end of the exhaust hole 101, which is matched with the exhaust valve plate 2, is provided with a boss 6, the exhaust valve plate 2 is matched against the boss 5, a sealing layer 601 is arranged on the boss 6, and the sealing layer 601 arranged on the boss 6 and the boss 601 can select flexible sealing materials such as rubber, so that good sealing can be ensured, and the exhaust valve plate 2 is buffered to a certain extent when being impacted on the surface of the boss 2, and is not easy to break.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the design concept of the present utility model should be included in the scope of the present utility model.

Claims (5)

1. The utility model provides a compressor discharge valve subassembly, includes valve plate (1), discharge valve piece (2) and lift limiter (3), be provided with exhaust hole (101) on valve plate (1), discharge valve piece (2) reciprocating motion between exhaust hole (101) and lift limiter (3), its characterized in that: the novel air valve is characterized in that a buffer elastic piece (4) is arranged on the valve plate (1), the buffer elastic piece (4) protrudes out of the surface of the valve plate (1) and is in butt fit with the exhaust valve plate (2), a buffer air cavity (5) is arranged on the lift limiter (3), an adsorption air hole (501) is formed in one side, opposite to the exhaust valve plate (2), of the buffer air cavity (5), a small air hole (502) is formed in the peripheral side of the buffer air cavity (5), a baffle piece (7) is arranged in the small air hole (502), and the baffle piece (7) can swing in two directions on the inner side and the outer side of the small air hole (502).

2. A compressor discharge valve assembly according to claim 1, wherein: one end of the exhaust valve plate (2) is fixed on the valve plate (1), the other end of the exhaust valve plate extends to the exhaust hole (101), one end of the lift limiter (3) is pressed on the fixed end of the exhaust valve plate (2), the other end of the exhaust valve plate is bent upwards to form a limiting part (301), and the buffer air cavity (5) is arranged on the limiting part (301).

3. A compressor discharge valve assembly according to claim 1, wherein: the part of the buffering elastic piece (4) protruding out of the surface of the valve plate (1) is arranged to be an arch structure.

4. A compressor discharge valve assembly according to claim 1, wherein: one end of the exhaust hole (101) matched with the exhaust valve plate (2) is provided with a boss (6), and the exhaust valve plate (2) is in butt fit with the boss (6).

5. A compressor discharge valve assembly according to claim 4, wherein: a sealing layer (601) is arranged on the boss (6).