CN213743898U - Suction muffler with honeycomb hole structure and compressor - Google Patents

Abstract

The utility model relates to the technical field of compressors, in particular to a suction muffler with a honeycomb structure and a compressor, which comprises a shell, wherein a silencing cavity is arranged inside the shell, an air inlet and an air outlet are arranged on the shell, the air inlet and the air outlet are both communicated with the silencing cavity, a sealing plate A is arranged at the air inlet, a plurality of through holes communicated with the silencing cavity are arranged on the sealing plate A, and all the through holes are honeycomb; the utility model provides high silencer noise cancelling effect and inner structure are simple, make the degree of difficulty and low in production cost, have reduced compressor running noise.

Description

Suction muffler with honeycomb hole structure and compressor

Technical Field

The utility model relates to a compressor technical field specifically is a silencer and compressor of breathing in with honeycomb holes structure.

Background

The compressor is the heart of household appliances such as refrigerators, freezers, air conditioners and the like, the compressor continuously sucks in refrigerants when working, the refrigerants are discharged after compression work, air flow can generate noise in the processes of air suction and exhaust, the noise requirement on the household appliances is more and more strict along with the improvement of life quality of people at present, therefore, an air suction silencer is required to be installed in the compressor, the existing air suction silencer has better silencing performance, most of the existing air suction silencer is provided with structures such as partition plates, communicating pipes and the like with different sizes, the structure of an internal pipeline is complex, and certain processing and production difficulty is caused; meanwhile, the complicated pipeline is easy to generate airflow regeneration noise, and the noise elimination performance is influenced.

Disclosure of Invention

The utility model aims at providing a silencer and compressor of breathing in with honeycomb holes structure that just solves current silencer inner tube structure complicacy of breathing in, the processing degree of difficulty is big on the one hand, and manufacturing cost is high, and the problem that noise elimination performance has been reduced is produced to the pipeline that on the other hand is complicated.

The utility model has the following concrete scheme: the utility model provides a silencer of breathing in with honeycomb holes structure, includes the shell, and the inside noise elimination chamber that is equipped with of shell is equipped with air inlet and gas outlet on the shell, air inlet and gas outlet all with noise elimination chamber intercommunication, air inlet department is equipped with a shrouding A, is equipped with the through-hole of a plurality of and noise elimination chamber intercommunication on the shrouding A, and all through-holes are honeycomb.

The utility model discloses a noise elimination intracavity is equipped with a linker, and the linker includes a baffle, and the baffle separates the noise elimination chamber for first noise elimination chamber and second noise elimination chamber, first noise elimination chamber and air inlet intercommunication, second noise elimination chamber and gas outlet intercommunication, a communicating pipe is equipped with on the baffle, communicating pipe is used for communicateing first noise elimination chamber and second noise elimination chamber.

The communicating pipe is located the terminal surface of first noise elimination intracavity and is equipped with a shrouding B, is equipped with cellular through-hole on the shrouding B.

The end part of the communicating pipe, which is positioned in the first silencing cavity, is provided with a blocking block, the inner surface of the blocking block and the central axis of the communicating pipe form an alpha angle, the alpha range is 30-90 degrees, and the blocking block is provided with a honeycomb-shaped through hole which is arranged along the axial direction.

Communicating pipe is an L venturi tube, and L venturi tube lower extreme is just right the air inlet is equipped with the cellular through-hole that the horizontal direction was arranged on the vertical part pipe wall of L venturi tube, is equipped with the cellular through-hole that the vertical direction was arranged on the horizontal part pipe wall of L venturi tube.

Communicating pipe is an L venturi tube, and L venturi tube lower extreme is just right the air inlet, the corner position of L venturi tube are equipped with the cellular through-hole that the slope was arranged.

The area of a single through hole of the honeycomb-shaped through hole is 0.1mm²~20mm²。

The utility model also provides a compressor, it installs above-mentioned silencer of breathing in.

The working principle of the utility model is as follows: the silencer is optimally designed by utilizing the Helmholtz resonant cavity, so that the noise in a problem frequency band can be effectively reduced, and the aim of improving the silencing level is fulfilled. The pipe wall is provided with an opening and is connected with a closed cavity outside the pipe wall, and the cavity is a Helmholtz resonant cavity. The pipeline and the Helmholtz resonator form an acoustic resonance system, and air columns in all the honeycomb holes do reciprocating motion like pistons under the action of sound waves, so that friction and damping are generated, partial sound energy is converted into heat energy, and the aim of silencing is fulfilled. The honeycomb-shaped through holes arranged in the flow channel can generate larger air flow resistance and air flow loss, has better silencing performance and can effectively widen the silencing frequency band.

The compressor shell can be regarded as a closed Helmholtz resonant cavity, and the honeycomb pore plate arranged at the air inlet of the air suction muffler is used as a pipeline for increasing airflow, so that more sound energy is converted into heat energy; the inside of the shell of the suction muffler can also be regarded as a Helmholtz resonant cavity, and the honeycomb holes are arranged at different positions on the communicating pipe, so that the purpose is also achieved.

Compared with the prior art, the utility model has the following advantages: 1. the honeycomb structure has a good flow limiting effect, and can improve the airflow pulsation of the air suction port of the compressor; 2. the coaxial honeycomb perforated structure of the communicating pipe can effectively increase the volume of the air column in the Helmholtz resonant cavity, generate more friction and damping, effectively reduce the problem of frequency band noise and improve the silencing performance; 3. the combination of the honeycomb hole structures in different directions and positions can effectively control the size of the noise elimination amount and the range of a target noise elimination frequency band; 4. by utilizing the flow limiting effect of the honeycomb pore plate, the air flow buffering effect is good, and the medium-high frequency noise elimination effect can be improved.

Drawings

Fig. 1 is a perspective view of a first embodiment of the present invention;

fig. 2 is an internal structural view of a second embodiment of the present invention;

fig. 3 is a perspective view of a communicating vessel according to a second embodiment of the present invention;

fig. 4 is a perspective view of a communicating vessel according to a third embodiment of the present invention;

FIG. 5 is a front view of FIG. 4;

fig. 6 is a perspective view of a communicating vessel according to a fourth embodiment of the present invention;

FIG. 7 is a front view of FIG. 6;

fig. 8 is a perspective view of a fifth embodiment of the present invention;

FIG. 9 is a front view of FIG. 8;

FIG. 10 is a comparison graph of the simulated muffling effect of the first to fifth embodiments of the present invention and the comparative embodiment;

in the figure: 1-shell, 2-air inlet, 3-air outlet, 4-honeycomb through hole, 5-communicating vessel, 51-clapboard, 52-communicating tube, 53-honeycomb through hole, 54-block, 55-closing plate B, 6-closing plate A, 7-first muffling cavity, 8-second muffling cavity.

Detailed Description

Example one

Referring to fig. 1, this embodiment includes shell 1, and shell 1 is inside to be equipped with the anechoic chamber, is equipped with air inlet 2 and gas outlet 3 on the shell 1, and air inlet 2 and gas outlet 3 all communicate with the anechoic chamber, air inlet 2 department is equipped with a shrouding A6, is equipped with the through-hole 4 of a plurality of and anechoic chamber intercommunication on the shrouding A6, and all through-holes 4 are cellular.

The embodiment also provides a compressor, which comprises a shell, wherein the shell is provided with an air suction pipe and an air exhaust pipe, the shell is internally provided with a core, the core is provided with the air suction silencer, and an air inlet 2 of the air suction silencer is opposite to the air suction pipe of the shell.

The air pressure at the air inlet 2 is maximum, and the air flow resistance generated when the air flow passes through the honeycomb-shaped through holes 4 of the sealing plate A6 is large, so that the air flow speed is effectively reduced, the air flow kinetic energy is reduced, and the purpose of noise elimination is achieved.

Example two

Referring to fig. 2-3, in the present embodiment, the following features are added on the basis of the first embodiment, a communicating vessel 5 is installed in the muffling chamber, the communicating vessel 5 includes a partition plate 51, the partition plate 51 divides the muffling chamber into a first muffling chamber 7 and a second muffling chamber 8, the first muffling chamber 7 is communicated with the air inlet 2, the second muffling chamber 8 is communicated with the air outlet 3, a communicating pipe 52 is installed on the partition plate 51, and the communicating pipe 52 is used for communicating the first muffling chamber 7 with the second muffling chamber 8.

In this embodiment, a sealing plate B55 is disposed on the end surface of the communication pipe 52 located in the first muffling chamber 7, and a honeycomb through hole 53 is disposed on the sealing plate B55.

The airflow pressure of the airflow entering the muffler at the pipe orifice of the communicating pipe 52 is large, and the airflow resistance is large when the airflow passes through the honeycomb-shaped through hole 53, so that the throttling and pressure reducing effects are good, and the noise elimination effect is improved.

EXAMPLE III

Referring to fig. 4-5, the present embodiment has substantially the same structure as the second embodiment, except that the end of the communication pipe 52 located in the first muffling chamber 7 is provided with a block 54, the inner surface of the block 54 forms an angle of α 60 ° with the central axis of the communication pipe 52 (the angle may be reasonably selected within 30 ° to 90 ° according to the actual operating condition of the compressor), and the block 54 is provided with honeycomb-shaped through holes 53 arranged along the axial direction.

The honeycomb structure can effectively weaken the flow velocity of air flow in the flow channel, and meanwhile, the length of the through hole flow channel is uneven through the inclined plane, so that the purpose of widening the noise elimination frequency range can be achieved.

Example four

Referring to fig. 6 to 7, the present embodiment has substantially the same structure as the second embodiment, except that the communicating pipe 52 is an L-shaped pipe, the lower end of the L-shaped pipe faces the air inlet 2, the vertical part of the L-shaped pipe is provided with horizontally arranged cellular through holes 53, and the horizontal part of the L-shaped pipe is provided with vertically arranged cellular through holes 53.

The resonance cavities generated by the air columns in the honeycomb holes in different directions on the pipe wall of the communication pipe 52 have different sizes, have different characteristic silencing frequencies, and consume a large amount of sound energy after sound wave resonance, so that the silencing purpose is achieved.

EXAMPLE five

Referring to fig. 8 to 9, the present embodiment has substantially the same structure as the second embodiment, except that the corner portions of the L-shaped pipe are provided with honeycomb-shaped through holes 53 arranged obliquely.

The largest flow velocity of the air flow in the pipeline of the communicating pipe 52 is at the corner, and the honeycomb-shaped through holes 53 are arranged at the corner, so that the flow velocity of the air flow in the flow channel can be effectively reduced, and the noise elimination effect is improved.

In order to verify the silencing effect of each embodiment, the utility model discloses a simulation software calculates the silencing effect of each embodiment to a comparison example has been designed and has been compared with it, and the scheme that the comparison example adopted is basically the same with embodiment one, and the difference is that the air inlet department of comparison example does not set up the honeycomb orifice plate, and specific comparative analysis result picture is seen in figure 10.

Claims (8)

1. The utility model provides a silencer of breathing in with honeycomb holes structure, includes the shell, and the inside chamber of eliminating the noise that is equipped with of shell is equipped with air inlet and gas outlet on the shell, and air inlet and gas outlet all communicate characterized by with the chamber of eliminating the noise: the air inlet is provided with a sealing plate A, the sealing plate A is provided with a plurality of through holes communicated with the silencing cavity, and all the through holes are arranged in a honeycomb shape.

2. The suction muffler having a honeycomb cell structure as set forth in claim 1, wherein: the silencer is characterized in that a communicating vessel is arranged in the silencing cavity, the communicating vessel comprises a partition board, the partition board divides the silencing cavity into a first silencing cavity and a second silencing cavity, the first silencing cavity is communicated with the air inlet, the second silencing cavity is communicated with the air outlet, a communicating pipe is arranged on the partition board, and the communicating pipe is used for communicating the first silencing cavity with the second silencing cavity.

3. The suction muffler having a honeycomb cell structure as set forth in claim 2, wherein: the end face of the communicating pipe, which is positioned in the first silencing cavity, is provided with a sealing plate B, and the sealing plate B is provided with a honeycomb-shaped through hole.

4. The suction muffler having a honeycomb cell structure as set forth in claim 2, wherein: the end part of the communicating pipe, which is positioned in the first silencing cavity, is provided with a blocking block, the inner surface of the blocking block and the central axis of the communicating pipe form an angle alpha, the range of alpha is 30-90 degrees, and the blocking block is provided with honeycomb-shaped through holes which are arranged along the axial direction.

5. The suction muffler having a honeycomb cell structure as set forth in claim 2, wherein: the communicating pipe is an L-shaped pipe, the lower end of the L-shaped pipe is opposite to the air inlet, cellular through holes arranged in the horizontal direction are formed in the pipe wall of the vertical part of the L-shaped pipe, and cellular through holes arranged in the vertical direction are formed in the pipe wall of the horizontal part of the L-shaped pipe.

6. The suction muffler having a honeycomb cell structure as set forth in claim 2, wherein: the communicating pipe is an L-shaped pipe, the lower end of the L-shaped pipe is opposite to the air inlet, and the corner part of the L-shaped pipe is provided with a honeycomb-shaped through hole which is obliquely arranged.

7. A suction muffler having a honeycomb structure according to any one of claims 1 to 6, wherein: the area of a single through hole of the honeycomb-shaped through hole is 0.1mm²~20mm²。

8. A compressor, characterized by: a suction muffler according to any one of claims 1 to 7 is mounted.

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