CN217152311U - Silencer and compressor assembly - Google Patents

Abstract

The utility model belongs to the technical field of the noise elimination, a silencer and compressor unit spare is disclosed, locate the noise elimination outside of the pipe through overlapping first sleeve and second sleeve respectively, on the length direction of noise elimination pipe, the noise elimination pipe divide into two noise elimination districts, and two noise elimination districts are located first sleeve and second sleeve respectively, and the noise elimination mode that two noise elimination districts are parallelly connected in view of the above can further improve the acoustic absorptivity, improves the noise reduction effect.

Description

Silencer and compressor assembly

Technical Field

The utility model belongs to the technical field of the noise elimination, concretely relates to silencer and compressor unit spare.

Background

The existing silencer is formed by combining pipes with suddenly changed sectional areas, like an acoustic filter, and the pipes with different pipe diameters have own natural frequency. When sound waves containing various frequency components enter the first pipe orifice, only sound waves with certain frequencies near the first natural frequency can pass through and reach the second pipe orifice, and sound waves with other frequencies cannot pass through.

However, when the R134a flooded unit is newly developed in the company, the noise of the whole machine is still relatively high, the unpleasant low-frequency noise cannot be eliminated, and the sound is unpleasant to hear.

Disclosure of Invention

An object of the utility model is to provide a silencer and compressor unit spare can further improve the acoustic absorption coefficient, improves the noise reduction effect.

In order to achieve the above object, the utility model provides a muffler in a first aspect, including noise elimination pipe, first sleeve and second sleeve, first sleeve with the second sleeve is overlapped respectively and is located outside the noise elimination pipe on the length direction of noise elimination pipe, the noise elimination pipe divide into two noise elimination districts, two the noise elimination district is located respectively first sleeve with in the second sleeve.

In some embodiments, the muffler further comprises a first partition plate, the muffler pipe penetrates through the first partition plate, and the first partition plate is connected with the first sleeve and the second sleeve respectively.

In some embodiments, the muffler further comprises a second partition plate, the muffler pipe penetrates through the second partition plate, the outer edge of the second partition plate abuts against the inner wall of the first sleeve, in the length direction of the muffler pipe, the second partition plate divides a muffling area in the first sleeve into at least two muffling areas, and a plurality of muffling holes are formed in each muffling area.

In some embodiments, the axial length of each of the muffling zones is the same.

In some embodiments, the number of the silencing holes in any two adjacent silencing areas is different, and the aperture of the silencing holes in any two adjacent silencing areas is different.

In some embodiments, the radial dimension of the first sleeve is greater than the radial dimension of the second sleeve.

In some embodiments, the muffler further comprises a first sealing plate and a second sealing plate, the first sealing plate and the second sealing plate are respectively connected to two ports of the muffler pipe, the first sealing plate is connected to one end of the first sleeve far away from the second sleeve, and the second sealing plate is connected to one end of the second sleeve far away from the first sleeve.

In some embodiments, a first clamping portion is convexly arranged on one surface of the first sealing plate close to the first sleeve, and the first clamping portion is clamped between the first sleeve and the muffler pipe.

In some embodiments, a second clamping portion is convexly arranged on one surface, close to the second sleeve, of the second sealing plate, and the second clamping portion is clamped in the port, close to the second sleeve, of the muffling tube.

A second aspect of the present invention provides a compressor assembly, comprising a compressor and the muffler of the first aspect, the muffler being connected to the gas outlet of the compressor.

The beneficial effects of the utility model reside in that, the silencer and the compressor unit spare that provide, through locating the noise elimination outside of the pipe with first sleeve and second sleeve cover respectively, on the length direction of noise elimination pipe, the noise elimination pipe divide into two noise elimination districts, and two noise elimination districts are located first sleeve and second sleeve respectively, and the noise elimination mode that two noise elimination districts are parallelly connected in view of the above can further improve the acoustic absorptivity, improves the noise reduction effect.

Drawings

Fig. 1 is a schematic view of an installation structure of a muffler according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view taken along the line A-A in FIG. 1;

fig. 3 is an exploded schematic view of a muffler according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a first sealing plate according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 4;

fig. 6 is a schematic structural view of a second sealing plate according to the present invention;

fig. 7 is a schematic cross-sectional view in the direction C-C in fig. 6.

Description of reference numerals:

10. a muffler pipe; 20. a first sleeve; 21. a first mouth portion; 30. a second sleeve; 31. a second mouth portion; 40. a first separator; 50. a second separator; 60. a first seal plate; 61. a first clamping part; 70. a second seal plate; 71. a second clamping part.

Detailed Description

In order to facilitate an understanding of the invention, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.

As used herein, unless otherwise specified or defined, "first" and "second" … are used merely for name differentiation and do not denote any particular quantity or order.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, unless specified or otherwise defined.

It should be noted that "fixed to" or "connected to" in this document may be directly fixed to or connected to one element or may be indirectly fixed to or connected to one element.

As shown in fig. 1 to 7, the embodiment of the utility model discloses a silencer, including muffler pipe 10, first sleeve 20 and second sleeve 30, outside muffler pipe 10 was located to first sleeve 20 and second sleeve 30 cover respectively, in the length direction of muffler pipe 10, muffler pipe 10 divided into two noise elimination districts, and two noise elimination districts are located first sleeve 20 and second sleeve 30 respectively.

The first sleeve 20 and the second sleeve 30 are respectively sleeved outside the muffling pipe 10, the first sleeve 20 and the second sleeve 30 are adjacently distributed in the length direction of the muffling pipe 10, two muffling spaces are respectively formed between the inner walls of the first sleeve 20 and the second sleeve 30 and the outer wall of the muffling pipe 10, the muffling pipe 10 is divided into two muffling areas corresponding to the two muffling spaces, and the two muffling areas are respectively located in the first sleeve 20 and the second sleeve 30.

In some possible embodiments, the first sleeve 20 and the second sleeve 30 may be two cylinders of the same structure, and each of the two ports of the cylinder is correspondingly provided with a closing member, and an avoiding groove communicating the inside and the outside of the cylinder is formed on the closing member, and the cylinder can be sleeved outside the silencing tube 10 through the avoiding groove.

In this embodiment, a first partition plate 40 may be disposed between the first sleeve 20 and the second sleeve 30, a first through groove is disposed on the first partition plate 40, the first partition plate 40 is sleeved outside the muffler pipe 10 through the first through groove, the muffler pipe 10 penetrates through the first partition plate 40 through the first through groove, and two plate surfaces of the first partition plate 40 are connected to the first sleeve 20 and the second sleeve 30, respectively.

Wherein, the size of the first clapboard 40 is larger than the radial size of the first sleeve 20 and the second sleeve 30 so as to ensure the closed silencing effect.

The first sleeve 20 and the second sleeve 30 may be cylindrical or square-cylindrical, and are preferably cylindrical in this embodiment.

In this embodiment, the muffler further includes four second partition plates 50, each second partition plate 50 is provided with a second through groove, the second partition plate 50 is sleeved outside the muffler pipe 10 through the second through groove, and the muffler pipe 10 penetrates through the second partition plate 50 through the second through groove.

Four second baffles 50 are positioned within the first sleeve 20, with the outer edge of each second baffle 50 abutting the inner wall of the first sleeve 20. Wherein, the second partition board 50 can be fixedly connected with the muffler pipe 10 by adopting an expansion joint process.

In the length direction of the muffler pipe 10, the four second partition plates 50 divide the muffling area in the first sleeve 20 into five muffling areas, and one muffling area in the second sleeve 30 includes six muffling areas in total, wherein each muffling area is provided with a plurality of muffling holes. By adopting a noise elimination mode that a plurality of noise elimination areas are connected in parallel, the sound absorption coefficient can be further improved, and the noise reduction effect is improved.

In the present embodiment, the axial length of each muffling area is the same, and the plurality of muffling areas are relatively uniformly distributed in the longitudinal direction of the muffling tube 10.

The number of the silencing holes in any two adjacent silencing areas is different, and the aperture of the silencing holes in any two adjacent silencing areas is also different. By adopting the porous parallel technology, the noise elimination coefficient can be maximized.

In other embodiments, the radial dimension of the first sleeve 20 may be equal to or less than the radial dimension of the second sleeve 30. In this embodiment, the radial dimension of the first sleeve 20 is greater than the radial dimension of the second sleeve 30.

Since there are multiple sound attenuating regions in the first sleeve 20 and only one sound attenuating region in the second sleeve 30, the axial length of the first sleeve 20 is approximately four times that of the second sleeve 30 in this embodiment.

It is understood that in other possible embodiments, a plurality of sound deadening regions may be provided in the second sleeve 30, and is not limited thereto.

In this embodiment, the muffler further includes a first sealing plate 60 and a second sealing plate 70, the first sealing plate 60 and the second sealing plate 70 are respectively connected to two ports of the muffler pipe 10, the first sealing plate 60 is connected to an end of the first sleeve 20 far away from the second sleeve 30, and the second sealing plate 70 is connected to an end of the second sleeve 30 far away from the first sleeve 20.

Wherein, the first sealing plate 60 and the second sealing plate 70 are also provided with avoiding grooves, the size of the avoiding grooves is matched with the size of the orifice of the silencing tube 10, so as to avoid blocking the orifice of the silencing tube 10 and block the air circulation in the silencing tube 10.

Wherein the first cover plate 60 should be sized larger than the radial dimension of the first sleeve 20 and the second cover plate 70 should be sized larger than the radial dimension of the second sleeve 30 to ensure a close muffling effect.

As shown in fig. 4 and 5, a first clamping portion 61 is convexly disposed on one surface of the first sealing plate 60 close to the first sleeve 20, and the first clamping portion 61 is clamped between the first sleeve 20 and the muffler pipe 10.

As shown in fig. 6 and 7, a second snap-in portion 71 is protrudingly provided on a surface of the second sealing plate 70 close to the second sleeve 30, and the second snap-in portion 71 is snapped into a port of the muffler pipe 10 close to the second sleeve 30.

In order to improve the tightness of the muffling space, the two ports of the first sleeve 20 are further provided with first closing portions 21, the radial dimension of the first closing portions 21 decreases from the inside of the first sleeve 20 to the outside, and the first closing portions 60 are fixedly connected to the first partition plate 40 at the minimum port.

And two ports of the second sleeve 30 are respectively provided with a second closing-in part 31, the radial dimension of the second closing-in part 31 is smaller and smaller from the inside to the outside of the second sleeve 30, and the second closing plate 70 and the first baffle plate 40 are fixedly connected at the minimum port.

The first closing portion 21 is welded to the first partition plate 40 and the first sealing plate 60, and the second closing portion 31 is welded to the first partition plate 40 and the second sealing plate 70. By using a welded closure, rather than a threaded closure, reliability and stability may be improved.

The embodiment of the utility model provides a still disclose a compressor unit spare, including compressor and the silencer as above-mentioned related, the silencer is connected in the exhaust pipe mouth of pipe of compressor.

The silencer is arranged at the opening of the exhaust pipe, so that the air flow inlet and the air flow outlet of the silencer are on the same line. Wherein the compressor may be a screw compressor, such as an R134a flooded unit.

Based on the Helmholtz principle, the silencer adopts a porous parallel connection mode, so that the sound absorption coefficient is further improved, and the noise reduction effect is improved. After the silencer is assembled at the exhaust port of the compressor, the noise of the whole machine is improved, and particularly the low and medium frequency noise which is difficult to be heard.

Under the water cooling working condition, the 100% load noise is reduced by 4.8 dBA; a 25% load noise reduction of 5.9 dBA;

under the air cooling working condition, the 100% load noise is reduced by 7.2 dBA; the 25% load noise did not improve.

The above examples are not intended to be exhaustive list of the present invention, and there may be many other embodiments not listed. Any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.

Claims (10)

1. The silencer is characterized by comprising a silencing pipe, a first sleeve and a second sleeve, wherein the first sleeve and the second sleeve are respectively sleeved outside the silencing pipe, the silencing pipe is divided into two silencing areas in the length direction of the silencing pipe, and the two silencing areas are respectively positioned in the first sleeve and the second sleeve.

2. The muffler of claim 1, further comprising a first baffle through which the muffler pipe extends, the first baffle being connected to the first sleeve and the second sleeve, respectively.

3. The muffler of claim 1, further comprising a second baffle, wherein the muffler pipe extends through the second baffle, an outer edge of the second baffle abuts an inner wall of the first sleeve, and the second baffle divides a muffling area within the first sleeve into at least two muffling areas in a length direction of the muffler pipe, each muffling area having a plurality of muffling holes.

4. The muffler of claim 3, wherein the axial length of each of said muffling areas is the same.

5. The muffler of claim 3 or 4, wherein the number of the muffling holes in any two adjacent muffling areas is different, and the aperture of the muffling holes in any two adjacent muffling areas is different.

6. The muffler of any one of claims 1 to 4, wherein a radial dimension of the first sleeve is greater than a radial dimension of the second sleeve.

7. The muffler of claim 1, further comprising a first sealing plate and a second sealing plate, the first sealing plate and the second sealing plate being connected to two ports of the muffler pipe, respectively, the first sealing plate being connected to an end of the first sleeve distal from the second sleeve, and the second sealing plate being connected to an end of the second sleeve distal from the first sleeve.

8. The muffler of claim 7, wherein a first retaining portion is provided on a side of the first sealing plate adjacent to the first sleeve, and the first retaining portion is retained between the first sleeve and the muffler pipe.

9. The muffler of claim 7, wherein a second retaining portion is provided on a side of the second sealing plate adjacent to the second sleeve, and the second retaining portion is retained in the port of the muffler pipe adjacent to the second sleeve.

10. A compressor assembly comprising a compressor and a muffler as claimed in any one of claims 1 to 9, said muffler being connected to an exhaust port of said compressor.

Images