CN110761971A

CN110761971A - Silencer and compressor comprising same

Info

Publication number: CN110761971A
Application number: CN201911092884.7A
Authority: CN
Inventors: 郭晓东; 张文科
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: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-02-07

Abstract

The invention provides a silencer and a compressor comprising the same, relates to the technical field of compressors, and solves the technical problem that noise reduction and low cold loss of the silencer in the compressor cannot be considered at the same time. The silencer comprises a silencer body arranged on a lower flange, wherein a closed cavity is arranged at one end, close to the lower flange, in the silencer body, noise reduction liquid is filled in the closed cavity, isolation layers which can prevent gas from passing through the liquid are arranged at the bottom and the top of the closed cavity, and high-pressure gas enters the silencer body after being subjected to primary noise reduction in oil liquid below the lower flange and is subjected to secondary noise reduction by the noise reduction liquid; the compressor comprises a lower flange, a crankshaft and the silencer. The invention utilizes the viscous oil to eliminate noise, and because the gas discharged by the flange is in the silencer, the muffling noise generated when the gas bubbles out of the oil can be reduced, thereby realizing the purpose of dual noise reduction; the sealed cavity is filled with the noise reduction liquid, so that the oil quantity in the compressor cannot be lost, and the performance of the compressor cannot be influenced.

Description

Silencer and compressor comprising same

Technical Field

The invention relates to the technical field of compressors, in particular to a silencer and a compressor comprising the same.

Background

The existing large-scale frequency conversion compressor has difficulty in noise reduction, various noise reduction schemes are tested on the same machine type, no obvious improvement effect exists, only the lower exhaust noise reduction scheme has obvious noise reduction under two refrigerants of R32 and R410, but after the exhaust is carried out by adopting the lower exhaust mode, bottom oil directly enters a cavity formed by a lower flange and a lower silencer, each time a flange baffle opens an exhaust gap, the oil also enters a cylinder, so that the actual cylinder compression space is reduced, the oil wrapped by compressed high-pressure gas is increased, the cold quantity is reduced, the loss of the lower exhaust noise reduction cold quantity is increased, the performance loss of the compressor is serious, compared with the machine type of the conventional noise reduction scheme, the refrigeration quantity of the compressor using the lower exhaust mode for noise reduction is reduced by 3.5% at 30Hz/60Hz, reduced by 5.7% at 90Hz, the COP is greatly reduced, and high-temperature high-pressure gas is directly discharged into oil, there is a corrupting sound generated by the bubbles.

Disclosure of Invention

The invention aims to provide a silencer and a compressor comprising the same, and aims to solve the technical problem that noise reduction and low cooling loss of the silencer in the compressor cannot be realized at the same time in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a silencer, which comprises a silencer body arranged on a lower flange, wherein a closed cavity is arranged at one end, close to the lower flange, in the silencer body, noise reduction liquid is filled in the closed cavity, isolating layers which can prevent gas from passing through the liquid are arranged at the bottom and the top of the closed cavity, and high-pressure gas enters the silencer body after primary noise reduction in oil liquid below the lower flange and then carries out secondary noise reduction through the noise reduction liquid.

On the basis of the technical scheme, the invention can be further improved as follows.

As a further improvement of the invention, the noise reduction liquid filled in the closed cavity is the same as the oil liquid material below the lower flange.

As a further improvement of the invention, the closed chamber is of an annular structure, the peripheral side wall is attached to the inner wall of the silencer body, the bottom of the closed chamber is attached to the end face of the lower flange, the height of the closed chamber is smaller than that of the inner cavity of the silencer body, and the isolation layer covers the whole bottom and top areas of the closed chamber. The top and the bottom of the closed chamber are opened to form a closed chamber through the isolation layer.

As a further improvement of the invention, the silencer body is of a double-layer silencing structure and comprises a silencer inner layer and a silencer outer layer, and the closed chamber is arranged in the silencer inner layer.

As a further improvement of the invention, the closed chamber is of an annular structure, the peripheral side wall and the top side wall are attached to the inner wall of the inner layer of the silencer, the bottom of the closed chamber is attached to the end face of the lower flange, the top side wall of the closed chamber is provided with a gas passing hole corresponding to the position of the exhaust hole on the inner layer of the silencer, and the isolation layer covers the whole bottom area and the gas passing hole area of the closed chamber. The closed cavity is of a structure with an opening at the bottom, and the closed cavity is formed by the isolation layer. The height of the closed chamber is the same as that of the inner layer of the silencer.

As a further improvement of the invention, the isolation layer is made of a PTFE microporous membrane.

As a further improvement of the invention, a dividing layer capable of cutting bubbles is arranged outside the isolating layer.

As a further improvement of the invention, the partition layer is made of a filter screen.

As a further improvement of the invention, the filter screen is made of a filter screen capable of bearing noise reduction liquid in the closed cavity and the weight of the isolation layer.

The invention provides a compressor, which comprises a lower flange, a crankshaft and a silencer.

Compared with the prior art, the invention has the following beneficial effects:

the noise reduction principle of the silencer provided by the invention is the same as that of the traditional lower exhaust noise reduction, liquid noise reduction is adopted, a closed chamber filled with viscous noise reduction liquid is arranged in the silencer body, viscous oil is used for eliminating noise, and because the closed chamber and the noise reduction liquid are positioned in the silencer body, bubbles from the oil below a lower flange are subjected to noise reduction in the silencer, and because the gas discharged from the flange is in the silencer, the corruptions when the bubbles discharge the oil can be reduced, and the purpose of double noise reduction is realized; the closed cavity is filled with the noise reduction liquid, so that the oil quantity in the compressor cannot be lost, and the performance of the compressor cannot be influenced; in order to fix the oil serving as noise reduction liquid in a closed cavity of the silencer body, a PTFE material microporous membrane is used, so that liquid molecules can not pass through the PTFE material microporous membrane, but gas molecules can pass through the PTFE material microporous membrane, and therefore the purpose of noise reduction is achieved by fixing the oil in the silencer without losing oil mass and discharging gas; the silencer can reduce the noise reduction difficulty of a large series of variable frequency compressors, and reasonably reduces noise by fully utilizing the characteristics of different flow rates and different frequency and rotating speeds of refrigerants in the noise reduction process; under the condition of keeping the structure of the pump body unchanged, the noise problem of the large-displacement compressor is eliminated, so that the noise reduction of the frequency converter is easier, the characteristic of changing the structure of the pump body due to different refrigerants is avoided, and the development cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a cross-sectional view of a muffler of the present invention in a single-layer muffling configuration;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view of a muffler of the present invention in a double-layered muffler structure;

FIG. 4 is a top view of the inner layer of the muffler of FIG. 3;

FIG. 5 is a cross-sectional view of the outer layer of the muffler of FIG. 3;

fig. 6 is a top view of fig. 5.

FIG. 1, lower flange; 2. closing the chamber; 3. an isolation layer; 4. a filter screen; 5. a muffler inner layer; 6. an outer layer of a muffler; 100. a crankshaft; 200. and (4) exhausting holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

The invention provides a silencer, which comprises a silencer body arranged on a lower flange 1, wherein a closed cavity 2 is arranged at one end, close to the lower flange 1, in the silencer body, the closed cavity 2 is filled with noise reduction liquid, an isolation layer 3 which can prevent gas from passing through the liquid is arranged at the bottom and the top of the closed cavity 2, and high-pressure gas enters the silencer body after the noise of oil liquid below the lower flange 1 is reduced for the first time and then is subjected to secondary noise reduction through the noise reduction liquid.

The muffler provided by the invention has the same noise reduction principle as the traditional lower exhaust noise reduction, adopts liquid noise reduction, and is characterized in that a closed chamber filled with viscous noise reduction liquid is arranged in the muffler body, viscous oil is used for eliminating noise, and because the closed chamber and the noise reduction liquid are positioned in the muffler body, bubbles from the oil below a lower flange are subjected to noise reduction in the muffler, and because the gas exhausted from the flange is in the muffler, the muffling noise generated when the bubbles are exhausted out of the oil can be reduced, and the aim of double noise reduction is fulfilled; the sealed cavity is filled with the noise reduction liquid, so that the oil quantity in the compressor cannot be lost, and the performance of the compressor cannot be influenced.

In order to prevent the pump body from being polluted, the noise reduction liquid filled in the closed cavity 2 is the same as the oil liquid material below the lower flange 1.

Example 1:

as shown in fig. 1 and 2, in the present embodiment, the muffler body is a single-layer muffling structure, in order to prevent the noise reduction liquid in the sealed chamber 2 from contacting the crankshaft 100 rotatably penetrating through the muffler body to cause leakage, in the present invention, the sealed chamber 2 is an annular structure, the middle of the sealed chamber 2 is provided with an opening through which the crankshaft 100 passes, the crankshaft 100 and the opening in the middle of the sealed chamber 2 are in clearance fit, the shape and specification of the peripheral side wall of the sealed chamber 2 are the same as those of the inner cavity of the muffler body, and the sealed chamber 2 is welded to the inner wall of the muffler body, the top and the bottom of the sealed chamber 2 are open, and the sealed chamber 2 is formed by covering the; the bottom of airtight chamber 2 sets up with the laminating of lower flange 1 terminal surface, and it should be explained that, in this embodiment, the height of airtight chamber 2 is less than the muffler body inner chamber height, and isolation layer 3 covers in the whole bottom and the top region of airtight chamber 2.

In order to enable gas to pass through the closed chamber 2 without oil below the lower flange 1 entering the closed chamber 2, the isolation layer 3 is made of a PTFE microporous membrane. The microporous membrane made of PTFE polytetrafluoroethylene material can allow gas molecules to pass through, but oil liquid cannot pass through, and the oil-proof air-permeable oil-proof microporous membrane has the effects of oil resistance, air permeability and organic solvent resistance.

In order to fix the separator 3 without deformation or destruction due to gas impact, a dividing layer capable of scattering bubbles is provided outside the separator 3. The partition layers are disposed below the lower separator 3 and above the upper separator 3, respectively.

Furthermore, the division layer is made of a filter screen 4. In order to disperse the bubbles, the pore diameter of the filter net 4 is preferably smaller.

The filter screen 4 is made of a filter screen which can bear the weight of the noise reduction liquid and the isolation layer 3 in the closed cavity 2.

Example 2:

as shown in fig. 3 to 6, in the present embodiment, the muffler body has a double-layered sound-deadening structure, and includes a muffler inner layer 5 and a muffler outer layer 6, and the closed chamber 2 is disposed inside the muffler inner layer 5.

In order to prevent noise reduction liquid in the closed chamber 2 from contacting with the crankshaft 100 rotatably penetrating through the silencer body to cause leakage, in the invention, the closed chamber 2 is of an annular structure, the middle of the closed chamber is provided with an opening through which the crankshaft 100 passes, the crankshaft 100 is in clearance fit with the opening in the middle of the closed chamber 2, the shape and the specification of the peripheral side wall and the top side wall of the closed chamber 2 are the same as the specification of an inner cavity of the silencer body, the peripheral side wall and the top side wall are welded on the inner wall of the silencer body, the bottom of the closed chamber 2 is attached to the end face of the lower flange 1, it needs to be noted that in the embodiment, the height of the closed chamber 2 is equal to the height of the inner layer 5 of the silencer, the top side wall of the closed chamber 2 is provided with air passing holes corresponding to the positions of the exhaust holes 200 on the. The closed chamber 2 is of a bottom opening structure, and the closed chamber 2 is formed by the isolation layer 3.

The invention provides a compressor, which comprises a lower flange 1, a crankshaft 100 and the silencer.

In order to fix the oil serving as noise reduction liquid in a closed cavity of the silencer body, a PTFE material microporous membrane is used, so that liquid molecules can not pass through the PTFE material microporous membrane, but gas molecules can pass through the PTFE material microporous membrane, and therefore the purpose of noise reduction is achieved by fixing the oil in the silencer without losing oil mass and discharging gas; the silencer can reduce the noise reduction difficulty of a large series of variable frequency compressors, and reasonably reduces noise by fully utilizing the characteristics of different flow rates and different frequency and rotating speeds of refrigerants in the noise reduction process; under the condition of keeping the structure of the pump body unchanged, the noise problem of the large-displacement compressor is eliminated, so that the noise reduction of the frequency converter is easier, the characteristic of changing the structure of the pump body due to different refrigerants is avoided, and the development cost is reduced.

It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in fig. 1 to facilitate the description of the invention and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The utility model provides a muffler, is including setting up the muffler body on the flange down, its characterized in that, this internal flange one end of being close to of muffler has airtight cavity, be full of the liquid of making an uproar that falls in the airtight cavity, the bottom and the top of airtight cavity are provided with and enable gaseous isolation layer that can't pass through liquid.

2. The muffler of claim 1, wherein the closed chamber is filled with the same noise reducing liquid as the oil material below the lower flange.

3. The silencer of claim 1, wherein the closed chamber is of an annular structure, the peripheral side wall is attached to the inner wall of the silencer body, the bottom of the closed chamber is attached to the end face of the lower flange, the height of the closed chamber is smaller than the height of the inner cavity of the silencer body, and the isolation layer covers the whole bottom and top areas of the closed chamber.

4. The silencer of claim 1, wherein the silencer body is of a double-layer silencing structure and comprises an inner silencer layer and an outer silencer layer, and the closed chamber is arranged in the inner silencer layer.

5. The silencer of claim 4, wherein the closed chamber is of an annular structure, the peripheral side wall and the top side wall are attached to the inner wall of the silencer inner layer, the bottom of the closed chamber is attached to the end face of the lower flange, the top side wall of the closed chamber is provided with air passing holes corresponding to the positions of the air exhaust holes in the silencer inner layer, and the isolation layer covers the whole bottom area and the air passing hole area of the closed chamber.

6. The muffler of claim 1, wherein the barrier layer is made of a PTFE microporous membrane.

7. The silencer of any of claims 1-6, wherein the insulating layer is provided with a dividing layer on the outside to disperse the bubbles.

8. The muffler of claim 7, wherein the dividing layer is made of a filter mesh.

9. The muffler of claim 8, wherein the filter screen is made of a filter screen capable of carrying the noise reducing liquid and the weight of the insulating layer within the closed chamber.

10. A compressor comprising a lower flange, a crankshaft and a muffler as claimed in any one of claims 1 to 9.