KR101758450B1

KR101758450B1 - Inhalation and ventilation valve for compressor

Info

Publication number: KR101758450B1
Application number: KR1020150072723A
Authority: KR
Inventors: 민병일; 민성현
Original assignee: 민성현
Priority date: 2015-05-26
Filing date: 2015-05-26
Publication date: 2017-07-17
Also published as: KR20160138640A

Abstract

An intake and exhaust valve for a compressor is disclosed. An intake and exhaust valve for introducing air into a cylinder block of a compressor and controlling air exhausted from the cylinder block, the intake and exhaust valve comprising a plurality of intake holes and a plurality of exhaust holes formed in communication with the cylinder block, body; A first support member installed on the valve body; An intake valve plate elastically installed to be vertically movable between the valve body and the first support member to open and close the plurality of intake holes; A second support member provided under the valve body; An exhaust valve plate provided between the valve body and the second support member so as to be movable up and down to open and close the exhaust holes; A first buffer disposed on the valve body and the first support member and having elasticity to absorb an impact generated when the intake valve plate moves up and down; And a second buffer disposed on the valve body and the second support member and having elasticity to absorb an impact generated when the exhaust valve plate moves up and down.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a valve for a compressor,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake and exhaust valve for a compressor, and more particularly to an intake and exhaust valve for a compressor that absorbs shock generated by a valve plate when an intake port and an exhaust port are opened and closed and minimizes noise generated by the impact sound.

In general, a reciprocating air compressor is a device that stores compressed air in a storage tank of a certain capacity and enables various operations using high pressure storage air when necessary.

The conventional air compressor includes a storage tank for storing compressed air, a cylinder block provided with an electric motor and a pulley at one side of the electric motor at the upper end of the storage tank, a belt for transmitting the power of the electric motor to the pulley, And a cylinder head having an intake valve for sucking air and an exhaust valve for exhausting compressed air is provided at the upper end of the cylinder block.

In the cylinder block, several pistons for intake and exhaust are provided. The piston is connected to a crankshaft. One side of the crankshaft is connected to a pulley and receives power of the electric motor to perform rotational motion.

In the conventional air compressor constructed as described above, the power of the electric motor is transmitted to the pulley through the belt, the pulley transmits power to the crank shaft, and the piston installed in the cylinder block reciprocates up and down, Compresses the compressed air, and exhausts the compressed air through the exhaust valve, thereby storing the compressed air in the storage tank through the discharge pipe.

A conventional intake / exhaust valve having such an intake valve and an exhaust valve has a plurality of openings formed in the main body, and a valve plate for blocking the opening is resiliently mounted by a spring. In the case of an intake valve, In the case of an exhaust valve, the valve plate closes the upper surface of the opening and is opened by a suction force or an expansion force in the cylinder formed by the reciprocating motion of the piston, thereby sucking and exhausting air.

Such an intake and exhaust valve is inserted into a cylinder head and then fixed by interposing an intake side and an exhaust side holder having a plurality of through holes on one side wall.

However, since the valve plate of the intake and exhaust valve is mostly made of a metal material (stainless steel), it is detached and attached to the opening at the time of sucking and exhausting air, so that a hitting sound and vibration are generated. And is transmitted to the outside, which causes noise.

In order to solve such a problem, the noise reduction apparatus disclosed in Korean Utility Model Publication No. 359639 (August 10, 2004) replaces the valve plate made of a metal material with a synthetic resin material and changes the structure of the holder to some extent, The valve plate having a thin disk shape flows continuously from the inside to the inside of the intake / exhaust valve, while it bumps against the lower surface of the upper side and strikes against the fixed body at the lower side and the ringing phenomenon and the hitting sound are still generated due to the thin thickness Which is a cause of noise.

In addition, since the valve plate is made of synthetic resin, the valve plate is not only vulnerable to heat, but also has a fatal problem in that its durability is significantly lower than that of a conventional metal valve plate.

An object of the present invention is to provide a suction and discharge valve for a compressor, and more particularly, to provide a suction and discharge valve for a compressor that absorbs a sound generated by a valve plate when an inlet and an outlet are opened and closed to minimize noise.

Another object of the present invention is to provide an intake and exhaust valve for a compressor for eliminating a resonance phenomenon occurring inside a valve.

In order to achieve the above object, the present invention provides an intake and exhaust valve for introducing air into a cylinder block of a compressor and controlling air exhausted from the cylinder block, the intake and exhaust valve being provided in communication with the cylinder block, A valve body in which an exhaust hole is formed; A first support member installed on the valve body; An intake valve plate elastically installed to be vertically movable between the valve body and the first support member to open and close the plurality of intake holes; A second support member provided under the valve body; An exhaust valve plate provided between the valve body and the second support member so as to be movable up and down to open and close the exhaust holes; A first buffer disposed on the valve body and the first support member and having elasticity to absorb an impact generated when the intake valve plate moves up and down; And a second cushioning portion disposed on the valve body and the second support member, the second cushioning portion having elasticity to absorb an impact generated when the exhaust valve plate moves up and down .

The plurality of intake holes may be circularly arranged, and the plurality of exhaust holes may be circularly arranged to surround the intake holes.

The first buffer part may include a first ring member disposed on the first support member, and a second ring member and a third ring member disposed on the valve body.

The valve body may include an intake block formed in the upper portion thereof and disposed in the groove.

Wherein the second ring member is sealably disposed between the inner periphery of the intake block and the lower projection of the first support member and the third member is sealable between the outer periphery of the intake block and the inner periphery of the groove of the valve body Lt; / RTI >

The intake block may include a plurality of auxiliary intake holes communicating with the plurality of intake holes.

The intake valve plate may be movably coupled to the lower projection of the first support member.

The second buffer portion may include fourth and fifth ring members disposed on the valve body, and a sixth ring member disposed on the second support member.

The valve body may have a protrusion formed at a lower portion thereof and an exhaust block surrounding the protrusion.

The sixth ring member may be disposed in a sealable state between an outer periphery of an auxiliary block seated in a groove formed in the upper portion of the second support member and an inner periphery of the groove formed in the upper portion of the second support member.

The exhaust block may include a plurality of auxiliary exhaust holes communicating with the plurality of exhaust holes.

The exhaust block may be releasably secured to the valve body through a plurality of fastening screws.

The plurality of intake holes may be formed in protrusions of the valve body.

The exhaust valve plate may be movably coupled to the protrusion of the valve body.

The present invention is characterized by comprising: a stud bolt, one end of which passes through the second support member and the valve body sequentially and is fastened to the first support member; And a nut fastened to the other end of the stud bolt to maintain the assembled state of the valve body and the first and second support members.

In the present invention, the first and second buffer members absorb the impact of the first and second valve plates during the intake and exhaust operation to fundamentally eliminate the noise generating factors, thereby lowering the noise to about 20 dB or less below the living noise level There is an advantage that a pleasant working environment can be maintained.

1 is an assembled perspective view illustrating an intake and exhaust valve for a compressor according to an embodiment of the present invention.
2 is an exploded perspective view showing an intake and exhaust valve for a compressor according to an embodiment of the present invention.
Fig. 3 is a perspective view showing the intake plate support member shown in Fig. 1. Fig.
4 and 5 are a bottom view and a side view showing the valve body shown in Fig.
6 is a cross-sectional view illustrating an intake and exhaust valve for a compressor according to an embodiment of the present invention.
FIGS. 7 and 8 are sectional views respectively showing intake and exhaust states of an intake and exhaust valve for a compressor according to an embodiment of the present invention.

The present invention will become more apparent by describing in detail preferred embodiments of the present invention with reference to the accompanying drawings. Also, for ease of understanding of the invention, the appended drawings are not drawn to scale, but the dimensions of some of the components may be exaggerated.

1 to 6, an intake and exhaust valve 10 according to an embodiment of the present invention includes a valve body 100, an intake block 130, an exhaust block 150, a first support member 300, A valve plate 400, a second support member 500, an exhaust valve plate 600, a first buffer, and a second buffer.

The valve body 100 has a circular shape such that its outer periphery corresponds to the inner periphery 21 of the cylinder block 20 (see Fig. 7). The valve body 100 is formed with a circular upper groove 101 in which a first support member 300 is installed at a central portion of the upper surface of the valve body 100 and has a diameter similar to the diameter of the upper groove 101 Like projecting portion 103 is formed. In this case, the valve body 100 is formed with a through hole 105 passing through the center of the upper groove 101 and the projection 103. A stud bolt (30) penetrates through the through hole (105).

The nut 40 fastened to the other end of the stud bolt 30 can maintain the assembly state of the valve body 100 and the first and second support members 300 and 500.

A plurality of intake holes 111 are formed in the upper groove 101 of the valve body 100 around the through hole 105 in a circular shape. At this time, an inner groove 102 on which the intake block 130 is seated is formed at the center of the upper groove. A plurality of intake holes 111 are formed at regular intervals along the bottom surface of the inner groove 102.

The intake block 130 is formed in a ring shape and a plurality of auxiliary intake holes 131 communicating with the plurality of intake holes 111 formed in the valve body 100 are formed. A through hole 133 through which the stud bolt 30 passes is formed in the center of the intake block 130 and a groove 135 including the through hole 133 is formed. In this case, the lower end of the lower projection 330 of the first support block 300, which will be described later, is seated in the groove 135 of the intake block 130.

A second ring member 720 which is a part of the first cushioning portion is coupled in a sealing state between the inner periphery of the groove 135 of the intake block 130 and the outer periphery of the lower projection 330 of the first support block 300, A third ring member 730, which is a part of the first cushioning portion, is coupled to the inner circumference of the inner groove 102 of the valve body 100 in a sealed state.

In the peripheral portion 106 of the valve body 100, a plurality of exhaust holes 113 are arranged in a circular shape at a predetermined price. In this case, a ring-shaped lower groove 109 is formed along the bottom surface of the peripheral portion 106. The lower groove 109 includes a plurality of exhaust holes 113, and an exhaust block 150 is disposed. At this time, the exhaust block 150 is fixedly coupled to the valve body 100 through a plurality of fastening screws 200, and a plurality of first and second fastening holes 210 and 230, to which the plurality of fastening screws 200 are screwed, Are formed in the valve body 100 and the exhaust block 150, respectively.

The exhaust block 150 is formed in a ring shape and a plurality of auxiliary exhaust holes 151 communicating with a plurality of exhaust holes 113 formed in the valve body 100 are formed. Further, the exhaust block 150 is disposed in the lower groove 109 in a sealable state by the fourth and fifth ring members 740 and 750, which constitute a part of the second buffer part, which will be described later.

A plurality of intake holes 111 and a plurality of exhaust holes 113 formed in the valve body 100 are formed in the inner portion 23 of the cylinder block 20 and the exhaust holes 113 of the cylinder block 20 when the valve body 100 is mounted on the cylinder block 20. [ Respectively.

The first support member 300 is disposed in the upper groove 101 of the valve body 100 and prevents the intake valve plate 400 from being separated from the valve body 100 while the intake valve plate 400 is in the upper groove And a predetermined distance is maintained so as to be able to move up and down within the casing 101.

The first support member 300 is formed with a fastening hole 310 for fastening the stud bolts 30 at the center thereof and has a cylindrical lower protrusion 310 having a smaller diameter than the outer circumference of the first support member 300, (330) is formed. An intake valve plate 400 is movably coupled to the lower protrusion 330.

6, the lower end of the lower protrusion 330 is seated on the bottom surface of the groove 135 of the intake block 130. At this time, the upper surface of the first support member 300 is in contact with the upper surface of the valve body 100 As shown in FIG. The outer diameter of the first support member 300 is smaller than the diameter of the upper groove 101 of the valve body 100 so that the outer diameter of the first support member 300 and the groove of the valve body 100 101, a gap G through which air can pass is formed. The air introduced through the plurality of auxiliary intake holes 131 of the suction block 130 can be introduced into the interior 23 of the cylinder block 20 through the gap G. [

The intake valve plate 400 is formed with a through hole 410 through which the lower protrusion 330 of the first support member 300 is slidably inserted. The intake valve plate 400 is provided with a plurality of intake holes 111 so that the plurality of intake holes 111 can be opened only when air is sucked into the inside 23 of the cylinder block 20, And is elastically supported by the member S1.

One end of the first elastic member S1 is supported on the bottom of the first support member 300 and the other end is supported on the upper surface of the intake valve plate 400. [ The intake valve plate 400 is pressed toward the intake block 130 by the first elastic member S1 when the compressor is off and when the exhaust valve is exhausted, And is moved up to the first support member 300 side by the air introduced through the intake holes 131. [

The second support member 500 is disposed below the valve body 100 and has a through hole 510 through which the protrusion 103 of the valve body 100 is inserted. In this case, a seal ring 530 is disposed between the protrusion 103 of the valve body 100 and the through hole 510. The seal ring 530 is inserted into the insertion groove 103a formed along the outer periphery of the projection 103. [

A ring-shaped auxiliary block 570 is seated on the groove 501 of the second support member 500. In this case, a sixth ring member 760, which is a part of the second cushioning portion, is disposed in a sealed state between the groove 501 of the second support member 500 and the outer periphery of the auxiliary block 570, And the outer periphery of the protruding portion 103 of the valve body 100, the seal ring 571 is coupled in a sealing state.

The exhaust valve plate 600 is provided with a plurality of exhaust holes 113 so as to open a plurality of exhaust holes 113 only when exhausting the air from the inside 23 of the cylinder block 20, And is elastically supported by the elastic member S2.

The exhaust valve plate 600 has a through hole through which the protrusion 103 is coupled so as to be slidable along the protrusion 103 of the valve body 100 between the valve body 100 and the second support member 500 610) are formed.

One end of the plurality of second elastic members S2 is supported by the plurality of spring fixing grooves 503 of the second support member 500 and the other end is supported by the lower surface of the exhaust valve plate 600. [ Accordingly, the exhaust valve plate 600 is pressed toward the valve body 100 by the plurality of second elastic members S2 at the time of compressor off and during intake, 23 by the air discharged sequentially through the plurality of exhaust holes 113 and the plurality of auxiliary exhaust holes 151 and moves toward the second support member 500 side.

The first buffer part includes a first ring member 710 coupled along the outer circumferential surface of the first support member 300 and second and third ring members 720 and 730 coupled to the inner and outer circumferences of the intake block 130, ).

The first ring member 710 protrudes more than the bottom surface of the first support member 300 and the second and third ring members 720 and 730 protrude more than the upper surface of the intake block 130. The first ring member 710 collides with the upper surface of the intake valve plate 400 and the second and third ring members 720 and 730 collide against the upper surface of the intake valve plate 400 ). At this time, since the first to third ring members 710, 720, and 730 are made of a material having elasticity, it is possible to absorb an impact generated when colliding with the intake valve plate 400. Accordingly, the intake valve plate 400 is not damaged by the first buffer during the lifting operation and can suppress noise generation.

The second buffer part includes fourth and fifth ring members 740 and 750 respectively coupled along the inner periphery and the outer periphery of the exhaust block 150 and a sixth ring member 760 coupled along the outer periphery of the auxiliary block 570 do.

The fourth and fifth ring members 740 and 750 protrude more than the bottom surface of the valve body 100 and the sixth ring member 760 protrudes more than the upper surface of the auxiliary block 570. The fourth and fifth ring members 740 and 750 collide with the upper surface of the exhaust valve plate 600 and the sixth ring member 760 collides with the exhaust valve plate 600 ). At this time, since the fourth to sixth ring members 740, 750, and 760 are made of a material having elasticity, the impact generated when colliding with the exhaust valve plate 600 can be absorbed. Accordingly, the exhaust valve plate 600 is not damaged by the second buffer part during the lifting operation as in the above-described intake valve plate 400, and can suppress noise generation.

Hereinafter, the intake and exhaust actions of the intake and exhaust valve 10 for a compressor according to an embodiment of the present invention will be described with reference to FIGS. 7 and 8.

Before the intake operation, the intake valve plate 400 is seated on the second and third ring members 720 and 730, which are portions of the first cushioning portion as they are pressed by the first elastic member 100, Closing.

Referring to Fig. 7, the piston 25 in the cylinder block 20 rises in the intake / exhaust valve 10 for the compressor during intake, and a negative pressure is formed in the cylinder block 20.

The air existing outside the cylinder block 20 is sequentially introduced into the plurality of suction holes 111 of the valve body 100 and the plurality of auxiliary suction holes 131 of the suction block 130. [

The intake valve plate 400 is pushed up by the introduced air and opens the plurality of auxiliary suction holes 131. [

The air introduced into the upper groove 101 of the valve body 100 through the plurality of auxiliary intake holes 131 flows through the gap G between the upper groove 101 and the first support member 300, (23) of the housing (20).

Referring to FIG. 8, the piston 25 is lowered during the exhaust operation to compress the air present in the interior 23 of the cylinder block 20.

Accordingly, the air is sequentially discharged through the plurality of exhaust holes 113 of the valve body 100 and the plurality of auxiliary exhaust holes 151 of the exhaust block 150.

At this time, the exhaust valve plate 600, which has closed the plurality of auxiliary exhaust holes 151 by the plurality of second elastic members S2, is pushed down by the exhausted air, and the plurality of auxiliary exhaust holes 151 ).

Accordingly, the air discharged from the plurality of auxiliary exhaust holes 151 is exhausted between the valve body 100 and the second support member 500.

While the intake and exhaust operations are repeatedly performed, the intake valve plate 400 is absorbed by the first buffer part during the ascent and the noise is reduced. The exhaust valve plate 600 is moved by the second buffer part Noise is reduced as the shock is absorbed.

As described above, the present invention has been described by reference to the preferred embodiments and drawings, but it should be understood that the present invention is not limited to these embodiments, and various changes and modifications may be made without departing from the spirit and scope of the present invention by those skilled in the art. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the appended claims.

100: Valve body 111: Suction ball
113: exhaust hole 130: intake block
131: auxiliary intake hole 150: exhaust block
151: auxiliary exhaust hole 300: first supporting member
400: intake valve plate 500: second support member
600: exhaust valve plate 710, 720, 730:
740, 750, 760:

Claims

An intake and exhaust valve for introducing air into a cylinder block of a compressor and controlling air exhausted from the cylinder block,
A valve body communicably connected to the cylinder block, the valve body having a plurality of intake holes and a plurality of exhaust holes;
A first support member installed on the valve body;
An intake valve plate elastically installed to be vertically movable between the valve body and the first support member to open and close the plurality of intake holes;
A second support member provided under the valve body;
An exhaust valve plate provided between the valve body and the second support member so as to be movable up and down to open and close the exhaust holes;
A first buffer disposed on the valve body and the first support member and having elasticity to absorb an impact generated when the intake valve plate moves up and down; And
And a second buffer disposed on the valve body and the second support member and having elasticity to absorb an impact generated when the exhaust valve plate moves up and down.

The method according to claim 1,
The plurality of intake holes are arranged in a circular shape,
And the plurality of exhaust holes are circularly arranged so as to surround the intake holes.

The method according to claim 1,
Wherein the first buffer includes a first ring member disposed on the first support member, and second and third ring members disposed on the valve body.

The method of claim 3,
Wherein the valve body includes an intake block disposed at an upper portion of the valve body and disposed in the groove.

5. The method of claim 4,
The second ring member is disposed between the inner periphery of the intake block and the lower projection of the first support member in a sealable state,
Wherein the third ring member is disposed between the outer periphery of the intake block and the inner periphery of the groove of the valve body so as to be sealable.

5. The method of claim 4,
Wherein the intake block has a plurality of auxiliary intake holes communicating with the plurality of intake holes, respectively.

6. The method of claim 5,
Wherein the intake valve plate is movably coupled to the lower projection of the first support member.

The method according to claim 1,
Wherein the second buffer portion comprises fourth and fifth ring members disposed on the valve body, and a sixth ring member disposed on the second support member.

9. The method of claim 8,
Wherein the valve body includes a protrusion formed at a lower portion thereof, and an exhaust block surrounding the protrusion.

10. The method of claim 9,
Wherein the sixth ring member is disposed in a sealable state between an outer periphery of an auxiliary block seated in a recess formed in the upper portion of the second support member and an inner periphery of the recess formed in the upper portion of the second support member. Suction and exhaust valve.

10. The method of claim 9,
Wherein the exhaust block has a plurality of auxiliary exhaust holes communicating with the plurality of exhaust holes, respectively.

10. The method of claim 9,
Wherein the exhaust block is detachably secured to the valve body via a plurality of fastening screws.

10. The method of claim 9,
Wherein the plurality of intake holes are formed in protrusions of the valve body.

10. The method of claim 9,
Wherein the exhaust valve plate is movably coupled to the protrusion of the valve body.

The method according to claim 1,
A stud bolt passing through the second support member and the valve body sequentially and having one end fastened to the first support member; And
And a nut secured to the other end of the stud bolt to maintain the assembled state of the valve body and the first and second support members.