CN111207058A - Noise reduction device for air compressor and corresponding air compressor - Google Patents

Abstract

The invention relates to a noise reduction device for an air compressor, which comprises an inner valve plate, an outer valve plate and a cylinder cover which are sequentially stacked, the end part of the inner valve plate attached to the outer valve plate is provided with a buffer cavity, the inner valve plate is provided with a plurality of first through holes for introducing gas, each first through hole is communicated with the buffer cavity, the outer valve plate is provided with a plurality of second through holes, each second through hole is communicated with the buffer cavity, the end part of the cylinder cover which is jointed with the outer valve plate is provided with a curved groove which is communicated with the second through hole, and a silencing and noise-reducing channel is formed among the inner valve plate, the outer valve plate and the cylinder cover, and gas enters the curved groove in the silencing and noise-reducing channel from the first through hole in the silencing and noise-reducing channel and is discharged through the curved groove in the silencing and noise-reducing channel. The invention also provides a corresponding air compressor. By adopting the product of the invention, gas is discharged through the noise reduction channel, and the noise is effectively reduced.

Description

Noise reduction device for air compressor and corresponding air compressor

Technical Field

The invention relates to the technical field of environmental protection, in particular to the technical field of air compressors, and particularly relates to a noise reduction device for an air compressor and a corresponding air compressor.

Background

The air compressor, namely the air compressor, is the main body in the air supply device, is a device for converting the mechanical energy of the motor into gas pressure energy, and is an air pressure generating device for compressing air; it is mainly driven by motor directly to make crankshaft (eccentric device) produce rotation movement, and drive connecting rod to make piston produce reciprocating motion to produce cylinder volume change so as to make the repeated work of air suction, air compression and air exhaust.

The air compressor machine is accomplishing the repetition during operation of breathing in, calming anger, exhaust, can produce the noise, consequently, the amortization noise reduction problem of air compressor machine need fully be considered when the design.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the noise reduction device for the air compressor and the corresponding air compressor, which have the advantages of simple structure, convenience in processing and installation and obvious effect.

In order to achieve the above object, an aspect of the present invention provides a noise reduction device for an air compressor, which comprises:

the device including stack gradually the interior valve plate, outer valve plate and the cylinder cap that set up, with outer valve plate laminating the tip of interior valve plate set up the cushion chamber, interior valve plate set up the first through-hole that the several is used for letting in gas, every first through-hole with the cushion chamber be linked together, outer valve plate set up the several second through-hole, every the second through-hole with the cushion chamber be linked together, with outer valve plate laminating the tip of cylinder cap set up the curved groove, the curved groove with the second through-hole be linked together, make interior valve plate, outer valve plate and cylinder cap between form the amortization and fall the passageway of making an uproar, gas is fallen the first through-hole entering process in the passageway of making an uproar by the amortization and is fallen the curved groove in the passageway of making an uproar and discharge.

Preferably, the buffer cavity is provided with a first area and a second area for buffering gas exhausted from the first through hole, and the second area and the second through hole are correspondingly arranged, so that the gas buffered by the first area and the second area is exhausted to the second through hole from the second area.

Preferably, the first area has a plurality of first buffer units, each of the first buffer units includes a pair of first sidewalls and a first buffer wall located between the pair of first sidewalls, a first buffer chamber is formed between the first buffer wall and the first sidewall, the first buffer wall has a first inclined surface, and each of the first buffer walls corresponds to one of the first through holes, so that the gas discharged from the first through holes flows along the first inclined surface of the first buffer wall and rises to be dispersed to the first buffer chambers on both sides of the first inclined surface.

Preferably, the first side wall has a second inclined surface, and the inclination of the second inclined surface is greater than that of the first inclined surface.

Preferably, the second area has a plurality of second buffer units, each second buffer unit includes a pair of second sidewalls and a second buffer wall located between the pair of second sidewalls, a second buffer chamber is formed between the second buffer wall and the second sidewall, the second buffer wall has a third inclined surface, and each second buffer wall corresponds to one first through hole, so that the gas discharged from the first through hole flows along the third inclined surface of the first buffer wall and rises to be dispersed to the second buffer chambers on both sides of the third inclined surface.

Preferably, the second side wall has a fourth inclined surface, and the inclination of the fourth inclined surface and the inclination of the third inclined surface are both minimum inclination.

Preferably, the aperture of the first through hole is 2 to 3 times of the aperture of the second through hole.

Preferably, the first through holes are distributed in the inner valve plate in a circular shape.

Preferably, the curved groove has at least two bending parts.

The invention further provides an air compressor, and the air compressor is provided with the noise reduction device.

By adopting the silencing and noise-reducing device for the air compressor and the corresponding air compressor, the gas is discharged through the silencing and noise-reducing channel, so that the noise is effectively reduced.

Drawings

Fig. 1 is a perspective view of an inner valve plate in the noise reduction device of the present invention.

Fig. 2 is a front view of the inner valve plate of the noise reduction device of the present invention.

Fig. 3 is a rear view of the inner valve plate of the noise reduction and noise reduction device of the present invention.

Fig. 4 is a front view of an outer valve plate in the noise reduction device of the present invention.

Fig. 5 is a rear view of the outer valve plate in the noise reducing and noise reducing apparatus of the present invention.

Fig. 6 is a perspective view of a cylinder head in the noise reduction device of the present invention.

Fig. 7 is a front view of a cylinder head in the noise reduction device of the present invention.

Detailed Description

In order to more clearly describe the technical contents of the present invention, the following further description is given in conjunction with specific embodiments.

As shown in fig. 1 to 7, the embodiment of the noise reduction device for an air compressor according to the present invention includes an inner valve plate 100, an outer valve plate 200, and a cylinder cover 300, which are sequentially stacked, wherein the outer valve plate 200 is mounted on the inner valve plate 100, the cylinder cover 300 is mounted on the outer valve plate 200, and the noise reduction device is integrally mounted on a cylinder of the air compressor.

In the silencing and noise reducing device provided by the invention, a silencing and noise reducing channel is formed among the inner valve plate 100, the outer valve plate 200 and the cylinder cover 300, and gas enters from the inner valve plate 100 and is discharged through the cylinder cover 300 through the silencing and noise reducing channel so as to realize the silencing and noise reducing functions.

In the inner valve plate 100 according to the present invention as shown in fig. 1 to 3, the inner valve plate 100 includes an inner valve plate main body 110 having a first end 111 and a second end 112, and 10 first through holes 120 provided in the inner valve plate main body 110, the first end 111 of the inner valve plate main body 110 is attached to the outer valve plate 200, and the inner valve plate main body 110 has a certain thickness so that a buffer chamber is provided in the first end 111 of the inner valve plate main body 110; the axial direction of the 10 first through holes 120 is parallel to the axial direction of the inner valve plate 100, and the 10 first through holes 120 are uniformly distributed on the inner valve plate 100 in a circular shape around the central axis of the inner valve plate 100, each first through hole 120 can be filled with gas, and each first through hole 120 is communicated with the buffer cavity.

Therefore, the gas enters from the first through hole 120 at the second end 112 of the inner valve plate 100 as shown in fig. 3, passes through the first through hole 120, and enters the buffer chamber at the first end 11 of the inner valve plate 100 as shown in fig. 1 to 2, and the noise generated by the gas friction is relieved in the buffer chamber to a certain extent.

As shown in fig. 1 to 2 and 4 to 5, the buffer chamber is provided with a first region 140 and a second region 130 for buffering gas discharged from the first through hole 120, the second region 130 is provided corresponding to the plurality of second through holes 220 of the outer valve plate 200 shown in fig. 4 to 5, the inner valve plate 100 is communicated with the outer valve plate 200 through the second through holes 220, and the gas buffered by the first region 140 and the second region 130 in the buffer chamber of the inner valve plate 100 is discharged to the second through holes 220 of the outer valve plate 200 through the second region 130.

As shown in FIGS. 1-2, the first region 140 and the second region 130 of the buffer chamber are respectively provided with a plurality of buffer units, the buffer units located in the first region 140 and the buffer units located in the second region 130 have some differences in structure, so that different effects are generated, and the effect of relieving the gas noise is enhanced by the cooperation of the two buffer units. As shown in fig. 1, the first area 140 has a plurality of first buffer units, and the first buffer units adjacent to the second area 130 are exemplified as the first buffer units, the first buffer units include a left first sidewall 141, a right first sidewall 143, and a first buffer wall 142 located between the left first sidewall 141 and the right first sidewall 143, the left first sidewall 141, the right first sidewall 143, and the first buffer wall 142 are all walls extending from the side inner surfaces and the bottom inner surfaces of the buffer cavities, the 3 extending walls divide the buffer cavities into two first buffer chambers, that is, one first buffer chamber is formed between the first buffer wall 142, the side inner surfaces of the buffer cavities, the left first sidewall 141, and the bottom inner surfaces of the buffer cavities, and another first buffer chamber is formed between the first buffer wall 142, the side inner surfaces of the buffer cavities, the right first sidewall 143, and the bottom inner surfaces of the buffer cavities, the first buffer chamber is used for buffering gas; the first buffer wall 142, the left first side wall 141 and the right first side wall 143 are all configured to have a right trapezoid profile, the first buffer wall has a first inclined surface 145, the first inclined surface 145 is an inclined waist in the right trapezoid profile, the first buffer wall 142 is disposed corresponding to one first through hole 120, that is, a plane where the first buffer wall 142 is located passes through a circle center of the corresponding first through hole 120.

Accordingly, based on the design of the plurality of first buffer cells in the first region 140 of the buffer chamber, the gas discharged from the first through-hole 120 corresponding to the first region 140 flows along the first inclined surface 145 of the first buffer wall 142 in each first buffer cell and rises, and then is dispersed to the two first buffer chambers on both sides of the first inclined surface 145, and the gas in the first buffer chambers is collected to the second region 130 and discharged to the second through-hole 220.

In order to enhance the buffering effect of the first buffer unit in the first region 140 and facilitate the gas flow, the left first sidewall 141 has a left second inclined surface 146, the right first sidewall 143 has a right second inclined surface 144, and the inclination of the left second inclined surface 146 and the inclination of the right first inclined surface 144 are greater than the inclination of the first inclined surface 145. For convenience of processing, the left second inclined surface 146 and the right second inclined surface 144 are provided to have the same inclination. In the two right trapezoid profiles formed by the first buffer wall 142 and the left or right first side wall 141 or 143, the waist with the same height and the bottom with the same length, the top with different length and the oblique waist with different length and inclination are provided. The first inclined surface 145 preferably has a minimum inclination, and when the upper bottom of the right trapezoid is 0, the inclination of the inclined waist is the minimum inclination.

As shown in fig. 1 to 2, the buffer units in the second area and the first area are different in structure and function, wherein the second area 130 has 3 second buffer units, the second buffer unit includes a left second sidewall 131, a right second sidewall 133 and a second buffer wall 132 located between the left second sidewall 131 and the right second sidewall 131, two second buffer chambers can be formed between the second buffer wall 132 and the left and right second sidewalls, the second buffer wall 132 has a third inclined surface, and among three first through holes 120 corresponding to the second area 130, the second buffer wall 133 corresponds to one first through hole 120, that is, a plane where the first buffer wall 133 is located passes through a circle of the first through hole 120.

Thereby, the gas discharged from the first through hole 120 flows along the third inclined surface of the first buffer wall 132, rises, is dispersed to two second buffer chambers on both sides of the third inclined surface, and is discharged through the second through hole 220; the gas collected from the first region 140 is dispersed along the left second sidewall 131, the right second sidewall 133, the second buffer wall 132, and the second buffer chamber, and discharged through the second through hole 220.

In order to enhance the gas flow and the buffer function of the second buffer unit in the second region 130, the left and right second sidewalls 131 and 133 have a fourth inclined surface, and the inclination of the third inclined surface is set to be the same as the inclination of the fourth inclined surface, i.e., the minimum inclination; the left second side wall 131, the right second side wall 133 and the second buffer wall 132 are all in the shape of a right triangle, the hypotenuse is an inclined plane, one cathetus of the right triangle has the same height as the waist of the right trapezoid, and the other cathetus of the right triangle has the same length as the lower bottom of the right trapezoid.

For the distribution specific gravity of the first region and the second region in the buffer cavity, as shown in fig. 1-2, there are 7 first through holes corresponding to the first region, 7 first buffer units corresponding to the first region, 3 first through holes corresponding to the second region, and 3 second buffer units corresponding to the second region. The distribution proportion of the first area and the second area in the buffer cavity can be adjusted according to the power, the size and the like of the actual air compressor.

As shown in fig. 4 to 5, outer valve plate 200 includes outer valve plate body 210 and a plurality of second through holes 220 penetrating outer valve plate body 210, and serves as a part of noise reduction and noise reduction passages, and the diameter of first through hole 120 is 2 to 3 times the diameter of second through holes 220.

As shown in fig. 6 to 7, the gas enters the cylinder head 300 through the second through hole 220 of the outer valve plate 200, the cylinder head 300 is mounted on the outer valve plate 200, the cylinder head 300 has a cylinder head body 310, a heat sink 320 located outside the cylinder head body, and a curved groove 330 located inside the cylinder head body, an end of the curved groove 330 communicates with the second through hole 220 as a part of a noise reduction and noise reduction passage, and the gas is finally discharged through the curved groove 330, wherein the curved groove 330 is provided with 3 bent portions 331.

The noise reduction device provided by the invention can be installed in an air compressor, so that the noise reduction air compressor can be obtained.

By adopting the silencing and noise-reducing device for the air compressor and the corresponding air compressor, the gas is discharged through the silencing and noise-reducing channel, so that the noise is effectively reduced.

In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.

Claims (10)

1. A noise reduction device for an air compressor is characterized by comprising an inner valve plate, an outer valve plate and a cylinder cover which are sequentially stacked, the end part of the inner valve plate attached to the outer valve plate is provided with a buffer cavity, the inner valve plate is provided with a plurality of first through holes for introducing gas, each first through hole is communicated with the buffer cavity, the outer valve plate is provided with a plurality of second through holes, each second through hole is communicated with the buffer cavity, the end part of the cylinder cover which is jointed with the outer valve plate is provided with a curved groove which is communicated with the second through hole, and a silencing and noise-reducing channel is formed among the inner valve plate, the outer valve plate and the cylinder cover, and gas enters the curved groove in the silencing and noise-reducing channel from the first through hole in the silencing and noise-reducing channel and is discharged through the curved groove in the silencing and noise-reducing channel.

2. The noise reduction device for the air compressor according to claim 1, wherein the buffer chamber is provided with a first region and a second region for buffering the air exhausted from the first through hole, and the second region is arranged corresponding to the second through hole, so that the air buffered by the first region and the second region is exhausted from the second region to the second through hole.

3. The noise reduction device for the air compressor as claimed in claim 2, wherein the first region has a plurality of first buffer units, each of the first buffer units includes a pair of first sidewalls and a first buffer wall between the pair of first sidewalls, a first buffer chamber is formed between the first buffer walls, the first buffer wall has a first inclined surface, each of the first buffer walls corresponds to one of the first through holes, such that the gas exhausted from the first through holes flows along the first inclined surface of the first buffer wall and rises to be dispersed to the first buffer chambers on both sides of the first inclined surface.

4. The noise reduction device for an air compressor according to claim 3, wherein said first side wall has a second inclined surface, and an inclination of said second inclined surface is greater than an inclination of said first inclined surface.

5. The noise reduction device for the air compressor according to claim 2, wherein the second region has a plurality of second buffer units, each second buffer unit includes a pair of second sidewalls and a second buffer wall located between the pair of second sidewalls, a second buffer chamber is formed between the second buffer walls, the second buffer walls have third inclined surfaces, each second buffer wall corresponds to one first through hole, and thus the gas exhausted from the first through holes flows along the third inclined surfaces of the first buffer walls and rises to be dispersed to the second buffer chambers on both sides of the third inclined surfaces.

6. The noise reduction device for an air compressor according to claim 5, wherein the second side wall has a fourth inclined surface, and the inclination of the fourth inclined surface and the inclination of the third inclined surface are both the minimum inclination.

7. The noise reduction device for the air compressor as claimed in claim 1 or 2, wherein the diameter of the first through hole is 2-3 times that of the second through hole.

8. The noise reduction device for the air compressor as claimed in claim 1 or 2, wherein the first through holes are distributed in the inner valve plate in a circular shape.

9. The noise reduction device for the air compressor as claimed in claim 1, wherein the curved groove has at least two bending portions.

10. An air compressor, characterized in that, the air compressor is provided with the noise reduction device of claim 1.

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