CN211715330U

CN211715330U - Silencer and compressor

Info

Publication number: CN211715330U
Application number: CN201921961264.8U
Authority: CN
Inventors: 张洪钰; 蒋姝婷; 王成; 邝艳平; 黄振丽
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-10-20
Anticipated expiration: 2029-11-13

Abstract

The utility model discloses a silencer, including the muffler body, the muffler body has the muffler body, and the muffler body is inside to be enclosed into the amortization chamber, still includes the baffle, the baffle level is established and is separated into upper amortization chamber and lower floor's amortization chamber with the amortization chamber body in the amortization chamber is originally internal, be equipped with the circulation passageway that is used for feeding through amortization chamber and lower amortization chamber on the baffle to the air current flows through upper amortization chamber and lower floor's amortization chamber in order to eliminate the noise. The utility model also discloses a compressor, including above the muffler. The utility model discloses a muffler and compressor have following advantage: the utility model discloses a set up the muffler into the bilayer, separate its circumference for a plurality of amortization chambeies in the upper strata of muffler, gaseous entering into upper strata amortization chamber behind lower floor's amortization chamber, upper strata amortization chamber circumference sets up to a plurality ofly, and through circulation passageway successive layer intercommunication, last amortization chamber is sealed chamber, and gaseous can't continue the discharge again.

Description

Silencer and compressor

Technical Field

The utility model relates to a compressor technical field, in particular to muffler and compressor.

Background

With the improvement of living standard of people, the requirement on noise of an air conditioner is higher and higher, the compressor is used as a power source and is a main noise generating part, the reduction of the noise of the compressor is an important direction, and the silencer plays an important role in reducing the noise of the compressor.

In the rotary compressor, the silencer is a noise reduction device installed on the exhaust passage of the upper and lower flanges of the compressor, can block the propagation of sound waves, allows the air flow to pass through, and is an effective tool for controlling noise. The silencing principle is that a reactive exhaust silencer is used to reduce pressure pulsation and noise level, and abrupt change of the cross-sectional area of a pipeline in the flow direction is utilized to reflect or interfere airflow, so that the noise level is reduced. The existing silencer generally adopts upper and lower double-layer silencing settings to carry out layer-by-layer silencing, but the noise of the partial frequency band of the compressor cannot be effectively eliminated under the condition.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a muffler and compressor solves the problem that the background art mentioned.

In order to achieve the above object, the present invention provides a muffler and a compressor, which comprises:

the utility model provides a muffler, includes the muffler body, the inside amortization chamber that encloses of muffler body, its characterized in that still includes the baffle, the central part of muffler body and baffle is equipped with the centre bore that is linked together, the muffler cover is established on the bearing, the baffle level is established and is separated into upper layer amortization chamber and lower floor amortization chamber with the amortization chamber body in the amortization chamber body.

Further, the upper layer of silencing cavity at least comprises 1 baffle, at least 1 baffle divides the upper layer of silencing cavity into at least two silencing spaces, and at least one silencing space is internally provided with silencing materials.

Furthermore, the baffle plates are provided with communicating channels, the number of the baffle plates is set to be N, N is more than or equal to 1 and less than or equal to 6, and the number of the baffle plates provided with the communicating channels is N-1.

Further, the filling materials in at least two cavities of the upper-layer silencing cavity are different.

Further, the sound attenuation material is organic fiber, inorganic foam, metal fiber, foamed aluminum, aluminum alloy or resin.

Further, the volumes of at least two silencing spaces divided by the upper silencing cavity are different.

Further, baffle and muffler body are welding or baffle and muffler body pass through screw fixed connection.

Further, the lower-layer silencing cavity at least comprises 1 baffle, the number of the baffles is at least 1, the lower-layer silencing cavity is divided into at least two silencing spaces by the baffles, at least 1 of the baffles is provided with at least one communicating channel, and the silencing spaces are filled with silencing materials.

Further, the silencer body center is provided with the ring, the ring is with baffle, silencer body welding.

A compressor comprising the above-described muffler.

The utility model discloses a muffler and compressor have following advantage: the utility model discloses a set up the muffler into the bilayer, separate its circumference for a plurality of amortization chambeies in the upper strata of muffler, gaseous entering into upper strata amortization chamber behind lower floor's amortization chamber, upper strata amortization chamber circumference sets up to a plurality ofly, through circulation passageway successive layer intercommunication, is sealed chamber at last amortization chamber, and gaseous can't continue the discharge again.

Drawings

FIG. 1 is a top view of the muffler of the present invention;

FIG. 2 is a sectional view taken along line B-B of FIG. 1;

fig. 3 is a sectional view taken along a line a-a in fig. 2.

The reference numbers in the figures illustrate: 1. a muffler body; 11. an upper muffling cavity; 12. a lower muffling cavity; 2. screw holes; 3. a central bore; 4. a flow-through channel; 5. a communication channel; 6. and a baffle plate.

Detailed Description

To better understand the objects, structure and functions of the present invention, a muffler and a compressor of the present invention will be described in further detail with reference to the accompanying drawings 1-3.

The utility model provides a compressor, including the pump body, still include as shown in figure 1 to the silencer that figure 3 shows. The utility model provides a treat that the installation object is the last flange of the pump body, treat that the installation object axle is last flange axle.

The utility model provides a muffler includes muffler body 1 and baffle, as shown in fig. 2, muffler has

muffler body

1, and 1 inside encirclement of muffler body becomes the amortization chamber, and the baffle level is established in the amortization intracavity in order to separate into the amortization chamber to lie in the baffle upper amortization chamber 11 and lie in the lower floor's amortization chamber 12 of baffle below, is equipped with the circulation passageway 4 that is used for communicateing the amortization chamber and the lower amortization chamber on the baffle, and the middle part of baffle is equipped with centre bore 3.

It will be understood that the flow passage 4 may communicate the upper muffling chamber 11 and the lower muffling chamber 12, and that the refrigerant discharged from the flange flow passage of the compressor may enter the lower muffling chamber 12 in the muffler, and then the refrigerant enters the upper muffling chamber 11 through the flow passage 4. Thus, the refrigerant can be diffused in the lower sound-deadening chamber 12 and the upper sound-deadening chamber 11, respectively, and the muffler can reduce the flow noise of the refrigerant to at least some extent. Here, the number of the flow channel 4 may be one, but is not limited thereto, and the number of the flow channel 4 may be plural. The partition plate provided with the central hole 3 can be sleeved on the bearing.

Further, 1 center of muffler body is provided with the ring, and the ring welds with baffle 6, baffle, muffler body 1, is equipped with circulation passageway 4 on the baffle, and the refrigerant is discharged to muffler lower floor amortization chamber 12 from the flange circulation passageway, and through circulation passageway 4 on the baffle, the refrigerant flows into upper noise elimination chamber to guarantee the diffusion of refrigerant in upper amortization chamber 11, can reduce the flowing noise of refrigerant to a certain extent at least.

As shown in fig. 1 and 3, a baffle 6 for changing the flow direction of the air flow is arranged in the upper-layer silencing cavity 11, and a communicating channel 5 is formed in the baffle 6, so that at least two cavities can be defined by the upper silencing cavity again, the at least two cavities can be communicated with each other, the refrigerant can flow from one cavity to the other cavity, and when the refrigerant flows among the cavities, the refrigerant is continuously diffused, and the flowing noise of the refrigerant can be effectively reduced. Correspondingly, the lower layer silencing cavity 12 is provided with the baffle 6 for changing the flow direction of the airflow, so that at least two cavities can be defined by the upper silencing cavity again, the at least two cavities can be communicated, the refrigerant can flow from one cavity to the other cavity, and when the refrigerant flows among the cavities, the refrigerant is continuously diffused, and the flowing noise of the refrigerant can be effectively reduced.

Further, the shape of the silencer is circular, the baffle 6 is arranged in the upper-layer silencing cavity 11 along the radial direction, the baffle 6 divides the upper-layer silencing cavity 11 into a plurality of silencing spaces, and the silencing space and each silencing space resonate layer by layer to achieve the effect of silencing layer by layer.

The number of baffles 6 arranged in the upper-layer sound-deadening chamber 11 is preferably six, the baffles 6 form 6 sound-deadening spaces in the upper-layer sound-deadening chamber 11, and the number of the baffles 6 is at least two, and may be 2, 3, 4, 5, 6, and the like, which is not particularly limited herein. The plurality of silencing spaces of the upper silencing cavity 11 are filled with porous silencing materials. The metal noise reduction material is preferably selected from organic fiber, inorganic foam, metal fiber, foamed aluminum or aluminum alloy, resin and the like by applying the resonance noise reduction principle. The material can also be filled with noise reduction cotton materials, and the sound absorption and noise reduction principle of the materials, such as slag cotton, felt, wave crest sponge, foaming adhesive and the like, is utilized. It can be further known that the number of the communicating passages 5 is one less than that of the baffle plates 6, the number of the baffle plates 6 is five, the communicating passages 5 are formed in the baffle plates 6, and the number of the communicating passages 5 is 4, so that noise generated by the compressor flows through the plurality of silencing spaces to be silenced layer by layer, the noise stops flowing in the last silencing space flowing through, and the noise is eliminated in the last silencing space. The number of the communication channels 5 on the single baffle 6 can be multiple, and the airflow is further cut and disturbed, so that the noise is reduced. The total number of the communication passages 5 on all the baffles is larger than the number of the baffles 6. The gas enters the upper silencing cavity after passing through the lower silencing cavity 12, the upper silencing cavity is circumferentially arranged to be a plurality of cavities, the cavities are communicated layer by layer through the communication channel 5, the last silencing cavity is a sealed cavity, and the gas cannot be continuously discharged.

The volumes of the plurality of sound-deadening chambers on the upper layer of the silencer can be adjusted according to the noise frequency band to be eliminated. The inner part of each silencing cavity on the upper layer of the silencer can be filled with silencing materials made of different materials, and the problem of eliminating noises in different frequency bands is solved by changing the materials of the silencing materials of each cavity. The material conditioning is according to the following formula:

wherein f is the resonance frequency, q is the perforation rate, h is the thickness of the cavity, l is the length of the cavity, S is the total area of the holes, So is the total area of the sound-deadening material. The thinner the sound deadening material is, the higher the density is, and the medium and high frequency noise can be eliminated. The thicker the material of the sound attenuation material is, the lower the density is, and the medium and low frequency noise can be eliminated. When the compressor generates high-frequency noise, the number of the upper-layer silencing cavities of the silencer is set to be as large as possible, preferably 6, the circumferential distance of the silencing cavities is reduced, and the interior of the silencing cavities is filled with a silencing material with high density, so that the high-frequency noise is reduced. When the compressor generates low-frequency noise, one or two silencing cavities are arranged, and the interior of the silencing cavities is filled with silencing materials with lower density, so that the low-frequency noise is reduced.

According to the utility model discloses muffler through setting up baffle and baffle 6, can reduce the mobile noise of refrigerant to a certain extent at least to can reduce rotary compressor's noise, reduce the noise that has this rotary compressor's refrigeration plant, improve user's satisfaction.

Optionally, the partition plate can be welded with the silencer body 1, the integrally formed silencer body 1 and the partition plate are simple and reliable in structure, the installation process of the partition plate and the silencer body 1 can be omitted, and the installation efficiency of the compressor is improved.

Preferably, the silencer passes through the screw and locks baffle and silencer body 1 on the flange jointly, and when the baffle passed through the screw with silencer body 1 and establishes the connection, baffle 6 and silencer baffle or silencer body 1 of upper strata amortization chamber 11 welded mutually.

The surface symmetry is provided with screw hole 2 on the muffler body 1, and the muffler passes through two screw hole 2 and compressor fixed connection, and the compressor refrigerant is discharged the back from the flange, gets into muffler lower floor's amortization chamber, and partial gas is discharged from pump body passageway behind the amortization chamber resonance amortization of lower floor, and the circulation passageway 4 that some other gas set up on the baffle from the muffler middle level is arranged to the amortization chamber of muffler upper strata.

The above embodiment provided by the utility model is that the upper layer silencing cavity 11 is provided with at least two baffles 6, the baffles 6 divide the silencing cavity into a plurality of silencing spaces, and the lower layer silencing cavity 12 is not provided with the baffles 6; the utility model also provides an embodiment upper amortization chamber 11 and lower floor's amortization chamber 12 set up two at least baffles 6 respectively, and a plurality of noise elimination spaces are separated into with upper amortization chamber 11 and lower floor's amortization chamber 12 to two at least baffles 6, also fill porous amortization material in a plurality of noise elimination spaces in lower floor's amortization chamber 12 to each noise elimination space is flowed through to the refrigerant successive layer, through with each amortization chamber successive layer resonance amortization, reaches the effect of amortization layer upon layer.

When the baffles 6 are arranged on the upper side and the lower side of the partition plate, refrigerant discharged from a flange circulation channel of the compressor flows through the lower-layer silencing cavity, gas flows in the cavity formed by the lower-layer baffle in the lower-layer silencing cavity, after the gas is refracted and silenced among the baffles 6, the gas is discharged to the upper-layer silencing cavity through the communication channel on the partition plate, and the secondary silencing is performed on the upper-layer silencing cavity through the circulation channel between the baffles 6 arranged in the upper-layer silencing cavity.

Furthermore, the included angle alpha between the baffle 6 and the partition board is more than or equal to 30 degrees and less than or equal to 120 degrees, and when the angle alpha is equal to 90 degrees, the baffle 6 refracts, resonates and eliminates noise. When alpha is 30 degrees or 120 degrees, the gas enters the silencing cavity, the baffle 6 guides the gas, and meanwhile, the angle of the baffle 6 is inclined, so that cutting force is generated on the gas, and noise is reduced. Meanwhile, when the baffle 6 is inclined, the refraction direction of noise is changed, and noise elimination is facilitated.

As shown in fig. 3, the refrigerant enters each muffling chamber layer by layer according to the path shown by the arrow in fig. 3. The silencer has solved the not good problem of original double-deck silencer noise cancelling effect, has practiced thrift the axial high space of silencer simultaneously, through the regulation to upper amortization chamber 11 and the cotton material of amortization, has eliminated the noise of each frequency channel of compressor simultaneously, has played better noise cancelling effect.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides a muffler, includes muffler body (1), muffler body (1) inside encloses into the amortization chamber, its characterized in that still includes the baffle, the central part of muffler body (1) and baffle is equipped with centre bore (3) that are linked together, the muffler cover is established on the bearing, the baffle level is established and is separated into upper layer amortization chamber (11) and lower floor amortization chamber (12) at this internal amortization chamber with the amortization chamber body in amortization chamber.

2. A silencer according to claim 1, characterized in that the upper chamber (11) comprises at least 1 baffle (6), and at least 1 baffle (6) divides the upper chamber (11) into at least two silencing spaces, at least one of which is filled with silencing material.

3. The silencer according to claim 2, characterized in that the baffle (6) is provided with communicating channels (5), the number of the baffles is N, N is more than or equal to 1 and less than or equal to 6, and the number of the baffles provided with the communicating channels (5) is N-1.

4. A silencer according to claim 2, characterized in that the filling material in at least two of the cavities of the upper silencing cavity (11) is different.

5. The muffler of claim 4, wherein the sound attenuating material is an organic fiber, an inorganic foam, a metal fiber, an aluminum foam, an aluminum alloy, or a resin.

6. A silencer according to claim 2, characterized in that the volumes of at least two of said silencing spaces into which the upper silencing chamber (11) is divided are different.

7. The silencer according to claim 1, characterized in that the partition and the silencer body (1) are welded or the partition and the silencer body (1) are fixedly connected by screws.

8. The silencer according to claim 1, characterized in that the lower silencing chamber (12) includes at least 1 baffle (6), at least 1 baffle (6) divides the lower silencing chamber (12) into at least two silencing spaces, at least one communicating channel (5) is opened on at least 1 baffle (6), and the silencing spaces are filled with silencing material.

9. The silencer according to claim 1, characterized in that the silencer body (1) is centrally provided with a circular ring, which is welded with the baffle (6), the partition, the silencer body (1).

10. A compressor, characterized by comprising a muffler as claimed in any one of claims 1 to 9.