CN202328554U

CN202328554U - Novel muffler

Info

Publication number: CN202328554U
Application number: CN2011205002931U
Authority: CN
Inventors: 李波
Original assignee: TCL Air Conditioner Zhongshan Co Ltd
Current assignee: TCL Air Conditioner Zhongshan Co Ltd
Priority date: 2011-12-05
Filing date: 2011-12-05
Publication date: 2012-07-11
Anticipated expiration: 2021-12-05

Abstract

The utility model discloses a novel muffler, which comprises a shell and muffling columns arranged in the shell, wherein the muffling columns are arranged on the inner wall of the shell along the inner wall of the shell at certain intervals, and comprise short muffling columns and long muffling columns; the cross sections of the short muffling columns are the same as those of the long muffling columns; and the short muffling columns are shorter than the long muffling columns. The muffling columns are arranged in a muffling tube, so that the reflection times of sound waves of respective frequency bands in the muffler are increased greatly, and the energy of the sound waves are converted into heat energy greatly; therefore, the noise is reduced greatly; the long muffling columns and the short muffling columns are staggered, so that a space in the muffling tube is used fully, the reflection times of the sound waves in the muffler are increased, and the noise reduction effect is enhanced; due to a unique structure of the muffler, a fixed frequency of a pipeline system can be changed; and therefore, resonance caused by vibration of a compressor is avoided, and the noise is reduced.

Description

A kind of novel muffler

Technical field

The utility model relates to air-conditioning technical field, more particularly, relates to a kind of novel muffler.

Background technology

Air-conditioner is a kind of common household electrical appliances, utilizes cold-producing medium in the characteristic of carrying out states of matter heat absorption and heat release when changing, and the temperature of air is regulated.

The noise of air-conditioner is the key factor that influences its comfort index, also is one of important indicator of estimating air-conditioning quality quality.It not only causes the pollution of surrounding environment, and influences people's live and work.How to weaken the sound wave of multiband, the reducing noise value becomes one of center of gravity of Air-conditioning Enterprise scientific research personnel work significantly.

Can produce exciting force during vibration of compressor, this exciting force is directly passed to the support section of compressor, through the transmission of pipe arrangement, produces secondary vibration.This exciting force is produced by the sinusoidal vibration shape, because stack, amplitude will be original 2 times or 3 times.Simultaneously, the compressor pipe arrangement is impacted by swiftly flowing cold-producing medium and forced vibration also produces noise.When the mechanical external force direction that gives when compressor was consistent with direction of vibration, external force was made positive work to pipe-line system, and system capacity increases; Vibration noise sharply increases; This partial noise passes to casing through pipe-line system, vibes with sheet metal box body outside the air conditioner chamber, produces buzz.Intrinsic frequency when compressor operation identical with a part intrinsic frequency in the pipe-line system or near the time, can produce resonance, make the noise aggravation even pipeline is collided, the pipeline fracture.

In sum, a kind of scheme that suppresses to resonate, reduce the cold-producing medium noise is provided, the real necessity that belongs to.

The utility model content

The utility model purpose is in order to overcome the deficiency that above-mentioned prior art exists; A kind of novel muffler is provided; Comprise housing, also comprise the noise reduction post that is provided with in the housing, said noise reduction post is arranged on the inwall of housing with certain phase mutual edge distance along the inwall of housing; Said noise reduction post comprises short noise reduction post and long noise reduction post, and said short noise reduction post equates with the cross section of long noise reduction post, length is less than length noise reduction post.

Said housing comprises the end pipe at housing two ends, the person in charge at housing middle part, and the bottom surface circumference of said end pipe is connected by conical pipe between holding pipe and being responsible for less than the bottom surface circumference of being responsible for.

In the said housing, long noise reduction post evenly is staggered on the circumference of housing with short noise reduction post at a certain distance, and vertical every row noise reduction post is formed by the consistent noise reduction post of length.

The length of said long noise reduction post is less than the inside radius of being responsible for.

Said noise reduction post is arranged on person in charge's inwall of housing.

Compared with prior art, the utlity model has following beneficial effect:

1, the noise reduction post that in hush pipe, is provided with has significantly increased the order of reflection of sound wave in muffler of each frequency range, makes the energy of sound wave be able to change in a large number heat energy, thereby reduces noise significantly;

2, grow being staggered of noise reduction post, short noise reduction post, the space in the hush pipe is fully used, increased the order of reflection of sound wave in muffler, strengthen noise reduction;

3, this muffler be because of self particular structure also can change the intrinsic frequency of pipe-line system, prevents the resonance that takes place because of vibration of compressor, thereby reduces noise.

Description of drawings

Fig. 1 is the front view of the novel muffler of the utility model;

Fig. 2 is the side view of the novel muffler of the utility model;

Fig. 3 is the profile of the novel muffler of the utility model;

Fig. 4 is person in charge's structural representation of the novel muffler of the utility model;

Fig. 5 is person in charge's profile of the novel muffler of the utility model.

The specific embodiment

Below pass through the specific embodiment, and combine accompanying drawing that the utility model is described further.

A kind of novel muffler of the utility model, material is provided with a plurality of noise reduction posts for for copper T2M in housing 1.

Like Fig. 1, shown in 2, housing 1 comprises the end pipe 11 at housing 1 two ends, the person in charge 13 at housing 1 middle part, and the bottom surface circumference of end pipe 11 is connected by conical pipe 12 between holding pipe 11 and being responsible for 13 less than the bottom surface circumference of being responsible for.The upper base circumference of conical pipe 12 equals to hold the bottom surface circumference of pipe 11, and its circumference of going to the bottom equals to be responsible for 13 bottom surface circumference.

The noise reduction post is divided into short

noise reduction post

22 and 21 two types on long noise reduction post.Short noise reduction post 22 equates with the cross section of long noise reduction post 21, length is less than growing the noise reduction post.The length of long noise reduction post is less than the inside radius of being responsible for.

Every row (being vertical direction) noise reduction post being responsible for inwall is made up of the noise reduction post of equal in length, and long noise reduction post is formed long noise reduction colonnade, and short noise reduction post is formed short noise reduction colonnade.Long noise reduction colonnade is staggered evenly distributed along the circumference of being responsible for 13 with short noise reduction colonnade.

Novel hush pipe is connected with the pipe arrangement of compressor through end pipe 11, makes cold-producing medium from one end pipe 11 entering, again in the end pipe outflow from the other end.

In air-conditioner when running,, the noise that the cold-producing medium of HTHP is accompanied by compressor from compressor flows into the pipe arrangement of compressor, and novel hush pipe is connected on the pipe arrangement.Cold-producing medium expands greatly because of being responsible for 13 interior spaces after flowing into novel hush pipe.Because of the acting of expanding, the interior of cold-producing medium can significantly reduce, and pressure and temperature all reduces rapidly.When cold-producing medium finally passed through muffler, cold-producing medium was all very low because of pressure, temperature, and the noise that produces that expands is inhibited.In addition; The noise reduction post that in novel hush pipe, is provided with makes noise in the person in charge 13, come back reflective; Order of reflection increases greatly; Make noise in the propagation of repeatedly reflection and long distance, be converted into heat energy and diminish, and long noise reduction post 21 is fully utilized the spaces of being responsible in 13 with being crisscross arranged of short noise reduction post 22, increases noise to the full extent at the order of reflection of being responsible in 13.

Compressor in the running can high vibration, and drives its pipe arrangement vibration, when vibration frequency near or when reaching the intrinsic frequency of pipe arrangement, vibration is aggravation significantly, noise strengthens, damages pipe arrangement.And be installed in the intrinsic frequency that novel hush pipe on the compressor pipe arrangement has changed pipe arrangement, and can avoid the resonance of pipe arrangement and compressor, reduce noise and fault.

Claims

1. novel muffler; Comprise housing; It is characterized in that: also comprise the noise reduction post that is provided with in the housing; Said noise reduction post is arranged on the inwall of housing with certain phase mutual edge distance along the inwall of housing, and said noise reduction post comprises short noise reduction post and long noise reduction post, and said short noise reduction post equates with the cross section of long noise reduction post, length is less than length noise reduction post.

2. a kind of novel muffler according to claim 1 is characterized in that: said housing comprises the end pipe at housing two ends, the person in charge at housing middle part, and the bottom surface circumference of said end pipe is connected by conical pipe between holding pipe and being responsible for less than the bottom surface circumference of being responsible for.

3. a kind of novel muffler according to claim 2 is characterized in that: in the said housing, long noise reduction post evenly is staggered on the circumference of housing with short noise reduction post at a certain distance, and vertical every row noise reduction post is formed by the consistent noise reduction post of length.

4. a kind of novel muffler according to claim 3 is characterized in that: the length of said long noise reduction post is less than the inside radius of being responsible for.

5. a kind of novel muffler according to claim 4 is characterized in that: said noise reduction post is arranged on person in charge's inwall of housing.