CN112963355A

CN112963355A - Muffler with tail pipe and compressor

Info

Publication number: CN112963355A
Application number: CN202110211168.7A
Authority: CN
Inventors: 张朝磊; 靳海水; 邓志强; 沈慧; 谢利昌
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-06-15

Abstract

The invention relates to the technical field of compressors, in particular to a silencer with tail pipes and a compressor, which comprise a silencer body and a silencing cavity arranged on the silencer body, wherein one end of the silencing cavity is an open end, the other end of the silencing cavity is a closed end, the wall surface of the silencing cavity is provided with an air outlet hole, the air outlet hole is provided with a tail pipe extending towards the outside, and the inner diameter of the tail pipe is provided with a convex part; the silencer is characterized in that the silencer body is provided with a tail pipe, the tail pipe is connected with the air outlet hole, the tail pipe is arranged in the silencer cavity, the tail pipe is provided with a lug boss, the flow structure state of the tail pipe during jet flow is changed under the action of the lug boss, the vortex frequency of the jet flow is changed, low-frequency noise generated when the air flow is discharged from the silencer to the outside is reduced, and the overall noise reduction effect of the silencer is improved.

Description

Muffler with tail pipe and compressor

Technical Field

The invention relates to the technical field of compressors, in particular to a silencer with a tail pipe and a compressor.

Background

In the related technology of the compressor, the generation source of the airflow noise of the compressor mainly has two places, the first place is in a silencer, and mainly airflow in an air cylinder flows into the silencer through an exhaust port to be generated; the second is the generation of gas flow discharged from the silencer, i.e. the compressor gas flow is discharged from the cylinder and enters the silencer, and then is ejected from the silencer outlet to generate jet flow noise.

For the first type of airflow noise, a common noise reduction measure is to optimize the silencer or by providing helmholtz muffling holes; for the second air flow, the currently adopted silencing measures mainly include a serrated outlet, an inward flanging silencer and the like; at present, in most cases, after relevant noise reduction measures are adopted, the overall noise reduction effect of the compressor, particularly the low-frequency noise reduction effect, is not ideal.

Disclosure of Invention

In order to solve the above problems, the present invention provides a silencer with exhaust tail pipe and a compressor, in which the exhaust hole is arranged in the silencing cavity of the silencer body, the exhaust tail pipe is connected to the exhaust hole, the tail pipe can exhaust the air flow in the silencing cavity, the inner part of the tail pipe is provided with a projection, the flow structure state of the tail pipe during jet flow is changed under the action of the projection, the vortex frequency of the jet flow is changed, the low frequency noise generated when the air flow is exhausted from the silencer to the outside is reduced, and the overall noise reduction effect of the silencer is improved.

The technical scheme adopted by the invention is as follows: the utility model provides a take muffler of tail pipe, include the muffler body, set up in the amortization chamber of muffler body, amortization chamber one end is for opening the end, the other end is the blind end, the wall in amortization chamber is provided with the venthole, the venthole is equipped with the tail pipe that extends towards the outside, the tail pipe internal diameter is provided with the bellying.

The silencer body is further improved by being provided with a plurality of fixing holes.

The sound attenuation chamber is characterized in that the closed end is provided with a center hole, and the center hole penetrates through the sound attenuation chamber.

The further improvement of the scheme is that the inner diameter of the tail pipe is equal or gradually increased by the air outlet.

The further improvement of the scheme is that the bulge part bulges towards the axle center of the tail pipe.

The further improvement of the scheme is that the bulge part is annularly or irregularly and uniformly distributed on the inner diameter of the tail pipe.

The technical proposal is further improved in that the cross section of the convex part is polygonal, circular, elliptical or semicircular.

In a further improvement of the above solution, the shape of the protrusion is a cylinder, a prism or a hemisphere.

The further improvement of the scheme is that the height of the bulge is 0.2-0.8 times of the radius of the tail pipe.

A compressor comprises the silencer with the exhaust tail pipe.

The invention has the beneficial effects that:

compared with the traditional compressor silencer, the silencer has the advantages that the air outlet is formed in the silencing cavity of the silencer body, the tail pipe is connected to the air outlet, air flow in the silencing cavity can be discharged through the tail pipe, the lug boss is arranged inside the tail pipe, the flow structure state of the tail pipe during jet flow is changed under the action of the lug boss, the jet flow vortex frequency is changed, low-frequency noise generated when the air flow is discharged from the interior of the silencer to the outside is reduced, and the overall noise reduction effect of the silencer is improved. Specifically, set up the muffler body, set up in the amortization chamber of muffler body, amortization chamber one end is for opening the end, the other end is the blind end, the wall in amortization chamber is provided with the venthole, the venthole is equipped with the tail pipe towards outside extension, the tail pipe internal diameter is provided with the bellying. By arranging the silencer, low-frequency noise generated when the air flow is discharged from the inside of the silencer to the outside can be generated, thereby further reducing the exhaust noise of the compressor.

Drawings

FIG. 1 is a schematic view of a muffler of the present invention in use;

FIG. 2 is a schematic perspective view of a silencer according to embodiment 1 of the present invention;

FIG. 3 is a schematic view showing the internal structure of the silencer in FIG. 2;

FIG. 4 is a schematic view of the structure of the tail pipe of the silencer of FIG. 2;

FIG. 5 is a schematic perspective view of a silencer according to embodiment 2 of the present invention;

FIG. 6 is a schematic view showing the internal structure of the silencer in FIG. 5;

fig. 7 is a schematic view of the structure of the tail pipe of the silencer of fig. 6.

Description of reference numerals: silencer body 1, silencing chamber 11, fixing hole 111, center hole 112, air outlet hole 12, tail pipe 13, and boss 14.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1 to 7, a muffler with a tail pipe comprises a muffler body 1 and a muffling cavity 11 disposed in the muffler body 1, wherein one end of the muffling cavity 11 is an open end, and the other end of the muffling cavity is a closed end, an air outlet 12 is disposed on a wall surface of the muffling cavity 11, a tail pipe 13 extending outward is disposed in the air outlet 12, and a protruding portion 14 is disposed in an inner diameter of the tail pipe 13.

In this embodiment, a plurality of fixed orifices 111 has been seted up to muffler body 1, and fixed orifices 111 is used for penetrating screw or fixed axle and installs on the compressor, and structure simple to operate, stability is good.

The closed end is provided with a central hole 112, the central hole 112 penetrates through the sound attenuation cavity 11, and the central hole 112 is used for being matched with a compressor to be installed, so that the structure is stable and reliable.

Referring to fig. 2 to 4, in the present embodiment, the inner diameter of the tail pipe 13 is equal, and the constant diameter structure is adopted, so that the flow structure state of the tail pipe 13 during jet flow is changed, the vortex frequency of the jet flow is changed, low-frequency noise generated when the air flow is discharged from the interior of the silencer to the exterior is reduced, and the overall noise reduction effect of the silencer is improved.

Referring to fig. 5 to 7, in another embodiment, a muffler with an exhaust tail pipe includes a muffler body 1 and a muffling chamber 11 disposed in the muffler body 1, wherein one end of the muffling chamber 11 is an open end, and the other end of the muffling chamber 11 is a closed end, a wall surface of the muffling chamber 11 is provided with an air outlet 12, the air outlet 12 is provided with a tail pipe 13 extending outward, and an inner diameter of the tail pipe 13 is provided with a protruding portion 14; the inner diameter of the tail pipe 13 is gradually increased from the air outlet 12, therefore, the air flow in the silencing cavity 11 can pass through the air outlet 12 and is discharged outwards through the tail pipe 13, the protruding part 14 in the tail pipe 13 changes the flow structure state of the tail pipe 13 during jet flow, changes the vortex frequency of the jet flow, improves or reduces the low-frequency noise generated when the air flow is discharged outwards from the silencer, and improves the overall noise reduction effect of the silencer.

In another embodiment, the protrusion 14 protrudes toward the axis of the tail pipe 13, so as to change the vortex frequency of the jet flow, improve or reduce the low-frequency noise generated when the air flow is discharged from the interior of the silencer to the outside, and improve the overall noise reduction effect of the silencer.

In another embodiment, the protrusions 14 are annularly or irregularly distributed on the inner diameter of the tail pipe 13, so as to change the vortex frequency of the jet flow, improve or reduce the low-frequency noise generated when the air flow is discharged from the interior of the silencer, and improve the overall noise reduction effect of the silencer.

In another embodiment, the cross-sectional shape of the boss 14 is polygonal, circular, elliptical, or semicircular.

In another embodiment, the shape of the boss 14 is cylindrical, prismatic, or hemispherical.

In another embodiment, the height dimension of the protrusion 14 is 0.2 to 0.8 times the radius dimension of the tail pipe 13.

According to the invention, the air outlet 12 is arranged in the silencing cavity 11 of the silencer body 1, the tail pipe 13 is connected on the air outlet 12, the tail pipe 13 can discharge air flow in the silencing cavity 11, the lug boss 14 is arranged in the tail pipe 13, the flow structure state of the tail pipe 13 during jet flow is changed under the action of the lug boss 14, the vortex frequency of the jet flow is changed, low-frequency noise generated when the air flow is discharged from the silencer to the outside is reduced, and the overall noise reduction effect of the silencer is improved. Specifically, set up muffler body 1, set up in muffler body 1

's amortization chamber

11, 11 one end in amortization chamber are for opening the end, the other end is the blind end, the wall in amortization chamber 11 is provided with venthole 12, venthole 12 is equipped with tail pipe 13 towards outside extension, tail pipe 13 internal diameter is provided with bellying 14. By arranging the silencer, low-frequency noise generated when the air flow is discharged from the inside of the silencer to the outside can be generated, thereby further reducing the exhaust noise of the compressor.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a take muffler of tail pipe which characterized in that: including the muffler body, set up in the amortization chamber of muffler body, amortization chamber one end is for opening the end, the other end is the blind end, the wall in amortization chamber is provided with the venthole, the venthole is equipped with the tail pipe that extends towards the outside, the tail pipe internal diameter is provided with the bellying.

2. The muffler with an exhaust tail pipe according to claim 1, characterized in that: the silencer body is provided with a plurality of fixing holes.

3. The muffler with an exhaust tail pipe according to claim 1, characterized in that: the closed end is provided with a central hole, and the central hole penetrates through the silencing cavity.

4. The muffler with an exhaust tail pipe according to claim 1, characterized in that: the inner diameter of the tail pipe is equal in diameter.

5. The muffler with an exhaust tail pipe according to claim 1, characterized in that: the inner diameter of the tail pipe is gradually increased by the air outlet hole.

6. The muffler with an exhaust tail pipe according to claim 1, characterized in that: the bulge part bulges towards the axle center of the tail pipe.

7. The muffler with an exhaust tail pipe according to claim 1, characterized in that: the convex part is annularly or irregularly and uniformly distributed on the inner diameter of the tail pipe.

8. The muffler with an exhaust tail pipe according to claim 1, characterized in that: the cross section of the convex part is polygonal, circular, elliptical or semicircular.

9. The muffler with an exhaust tail pipe according to claim 1, characterized in that: the height dimension of the bulge is 0.2-0.8 times of the radius dimension of the tail pipe.

10. A compressor, characterized by: a silencer including the exhaust tail pipe according to any one of claims 1 to 9.