CN112177885A

CN112177885A - Silencer, compressor and refrigerator

Info

Publication number: CN112177885A
Application number: CN202010862565.6A
Authority: CN
Inventors: 赵旭敏; 刘源泉; 徐敏; 张问贵
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai; Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-01-05

Abstract

The application provides a muffler, a compressor and a refrigerator. The silencer comprises a sealed shell, a sealed shell and a sealed shell, wherein the sealed shell comprises an air inlet and an air outlet; be equipped with separator, first communicating pipe and second communicating pipe in the sealed casing, the separator will sealed casing internal separation is two different cavities of volume: a first expansion lumen and a second expansion lumen; the air inlet is arranged on the wall of the first expansion cavity; the first communicating pipe comprises a U-shaped section which is arranged on the isolating piece in a penetrating manner, the bottom of the U-shaped section is arranged in the second expansion cavity, and an air port is formed in the outer wall of the lowest end of the U-shaped section; one end of the U-shaped section is communicated with the air inlet, and the other end of the U-shaped section is communicated with the first expansion cavity; the second communicating pipe is communicated with the first expansion cavity and the air outlet. The connecting pipe with the U-shaped circulation channel is arranged in the sealing shell, so that the length of the pipeline is increased, the air column resonates, and the air suction efficiency of the silencer is improved.

Description

Silencer, compressor and refrigerator

Technical Field

The application belongs to the technical field of refrigerators, and particularly relates to a silencer, a compressor and a refrigerator.

Background

The suction muffler is mainly used for reducing suction noise of the compressor, and the principle of the suction muffler is that a suction port of the muffler sucks refrigerant gas in a shell of the compressor, and the refrigerant gas is expanded and contracted by a muffler cavity to cause sound reflection and interference, so that the suction muffler has a muffling effect.

The existing silencer is usually provided with a gas inlet pipe and a gas outlet pipe which are different in pipe diameter and length in a shell, so that the flow rate of refrigerant gas is changed, when the flow rate of gas is slowed down, the pulsation of the gas flow is correspondingly reduced, the noise generated is reduced, the structure reduces the noise, but the loss of the gas flow along the path resistance is increased, the kinetic energy part of the gas flow is converted into heat energy to be consumed, the gas transmission amount is greatly reduced, the efficiency of a compressor is influenced, and the performance is reduced. The energy consumption standard of the refrigerator is higher and higher in the market, and the energy efficiency of the silencer needs to be improved to improve the performance of the compressor so as to achieve the energy consumption standard of the refrigerator.

Disclosure of Invention

Therefore, an object of the present invention is to provide a muffler, a compressor, and a refrigerator, which can reduce a loss of fluid resistance.

In order to solve the above problems, the present application provides a muffler including:

the sealed shell comprises an air inlet and an air outlet; be equipped with separator, first communicating pipe and second communicating pipe in the sealed casing, the separator will sealed casing internal separation is two different cavities of volume: a first expansion lumen and a second expansion lumen; the air inlet is arranged on the wall of the first expansion cavity;

the first communicating pipe comprises a U-shaped section which is arranged on the isolating piece in a penetrating manner, the bottom of the U-shaped section is arranged in the second expansion cavity, and an air port is formed in the outer wall of the lowest end of the U-shaped section; one end of the U-shaped section is communicated with the air inlet, and the other end of the U-shaped section is communicated with the first expansion cavity; the second communicating pipe is communicated with the first expansion cavity and the air outlet.

Optionally, the flow channel in the first communication pipe is wave-shaped or zigzag-shaped in the flow direction.

Optionally, the ratio of the volumes of the first expansion chamber and the second expansion chamber is 1.5-3: 1.

Optionally, the sealed housing includes an upper housing and a lower housing, and the upper housing and the lower housing are fastened to form the sealed housing.

Optionally, the partition comprises a partition plate and a clamping groove, and the partition plate is hermetically inserted in the clamping groove; the partition plate is arranged on the upper shell, and the clamping groove is arranged on the lower shell; or the baffle is arranged on the lower shell, and the clamping groove is arranged on the upper shell.

Optionally, an inlet of the first communicating pipe is provided with a filter screen, and/or an inlet of the second communicating pipe is provided with a filter screen.

According to another aspect of the present application, there is provided a compressor including the muffler as described above.

Optionally, the muffler is provided on a cylinder head of the compressor.

Optionally, the air suction port of the compressor is communicated with the air inlet of the silencer, and the air outlet of the silencer is communicated with the air cavity inlet of the compressor.

According to another aspect of the present application, there is provided a refrigerator including the muffler as described above or the compressor as described above.

The application provides a muffler includes: the sealed shell comprises an air inlet and an air outlet; be equipped with separator, first communicating pipe and second communicating pipe in the sealed casing, the separator will sealed casing internal separation is two different cavities of volume: a first expansion lumen and a second expansion lumen; the air inlet is arranged on the wall of the first expansion cavity; the first communicating pipe comprises a U-shaped section which is arranged on the isolating piece in a penetrating manner, the bottom of the U-shaped section is arranged in the second expansion cavity, and an air port is formed in the outer wall of the lowest end of the U-shaped section; one end of the U-shaped section is communicated with the air inlet, and the other end of the U-shaped section is communicated with the first expansion cavity; the second communicating pipe is communicated with the first expansion cavity and the air outlet. The connecting pipe with the U-shaped flow channel is arranged in the sealed shell, so that the length of the pipeline is increased, the air column resonates, and the air suction efficiency of the silencer is improved; meanwhile, the inner cavity of the silencer is separated and the proportion of the interlayer of the inner cavity is controlled so that the silencing effect is good.

Drawings

Fig. 1 is an exploded view of a silencer according to an embodiment of the present application.

The reference numerals are represented as:

1. an upper housing; 2. a lower housing; 22. filtering with a screen; 23. a card slot; 24. a card slot; 25. an air inlet; 26. an air outlet; 27. a second expansion lumen; 28. a first expansion lumen; 31. a gas port; 32. a lead-out port; 33. a first communication pipe; 34. and a second communication pipe.

Detailed Description

Referring collectively to FIG. 1, in accordance with an embodiment of the present application, a muffler comprises:

a sealed housing including an air inlet 25 and an air outlet 26; be equipped with separator, first communicating pipe 33 and second communicating pipe 34 in the sealed casing, the separator will sealed casing internal partitioning is two different cavitys of volume: a first expansion lumen 28 and a second expansion lumen 27; the air inlet 25 is provided in the wall of the first expansion chamber 28;

the first communicating pipe 33 comprises a U-shaped section which is arranged on the isolating piece in a penetrating manner, the bottom of the U-shaped section is arranged in the second expansion cavity 27, and the outer wall of the lowest end of the U-shaped section is provided with an air port 31; one end of the U-shaped section is communicated with the air inlet 25, and the other end of the U-shaped section is communicated with the first expansion cavity 28; the second communication pipe 34 communicates the first expansion chamber 28 with the air outlet 26.

The structure that is provided with baffle and two communicating pipes in the casing for different volumetric expansion chamber weakens or eliminates the noise of different frequency sections, can reduce the fluid resistance loss, promotes the efficiency of breathing in of muffler.

According to the structure of the communicating pipe arranged on the partition board to connect the adjacent expansion cavities, the effective length L and the diameter d of the communicating pipe are determined according to the resonance frequency

Designing, wherein C is sound velocity, V is compressor displacement, and S is suction port sectional area; the frequency influence range is between 0.8f and 1.2f, so that the running frequency of the compressor and the gas column frequency of the silencer resonate, the purpose of improving the performance is achieved, and the performance can be improved by 5 to 10 percent.

This application takes the communicating pipe of U type section through the design, is equivalent to along having lengthened the length of communicating pipe, makes the gas column frequency the same with compressor operating frequency, reaches the air current resonance, increases the air current velocity of flow, increases unit mass flow to reach and promote the refrigerating output. Meanwhile, the optimal silencing effect is achieved by separating the inner cavity of the silencer and controlling the proportion of the interlayer of the inner cavity.

In some embodiments, the flow channels in the first communication pipe 33 are wave-shaped or zigzag-shaped in the flow direction.

Through improving the circulation passageway of the fluid in first communicating pipe 33 for under the prerequisite that does not influence the inside effective use space of muffler, the effective length L of multiplicable communicating pipe, consequently promote noise cancelling efficiency.

And as for the outer shape of the first communication pipe 33, the cross-sectional shape thereof may be rectangular, circular, square, or the like; the shape of the inner portion in the flow direction may be other bent shapes.

In some embodiments, the ratio of the volumes of the first expansion chamber 28 and the second expansion chamber 27 is 1.5-3: 1.

The volume of the two expansion cavities is set to be 1.5-3:1, more preferably 2:1, most of noise can be weakened or eliminated, and the noise reduction effect is good.

In some embodiments, the sealed housing includes an upper housing 1 and a lower housing 2, and the upper housing 1 and the lower housing 2 are buckled to form the sealed housing.

The sealed shell adopts the upper and lower two parts lock setting, and convenient assembly is convenient for install communicating pipe and separator in sealed shell.

In some embodiments, the spacer comprises a partition and a

slot

23, 24, said partition being sealingly inserted in said

slot

23, 24; the partition plate is arranged on the upper shell 1, and the

clamping grooves

23 and 24 are arranged on the lower shell 2; or the partition plate is arranged on the lower shell 2, and the

clamping grooves

23 and 24 are arranged on the upper shell 1.

The isolating pieces are inserted into the

clamping grooves

23 and 24 through the partition plates, so that the assembling is convenient, the sealing performance is good, and the structural strength is high.

In some embodiments, the inlet of the first communication pipe 33 is provided with a screen 22, and/or the inlet of the second communication pipe 34 is provided with a screen 22.

The filter screen 22 is installed at the inlet of the communicating pipe, which can filter impurities and prevent the impurities from entering the cylinder of the compressor.

The structure of the silencer will be described in detail with reference to fig. 1; the silencer comprises an upper shell 1 and a lower shell 2 which are combined together to form a closed structure, the interiors of the upper shell 1 and the lower shell 2 are divided into a first expansion cavity 28 and a second expansion cavity 27 which are connected in series through a partition plate, the volumes of the two expansion cavities are set according to a certain proportion, and the volume proportion of the inner cavities is about 2:1, so that the silencing effect on different frequency sections is achieved.

Specifically, the baffle sets up at last casing 1, and lower casing 2 sets up draw-in groove 23 and draw-in groove 24 corresponding with the baffle, and the draw-in groove is in the same place with the mutual interpolation of baffle, and the leakproofness is good, and structural strength is high.

In actual manufacturing, both the first communication pipe 33 and the second communication pipe 34 are arranged on the lower shell 2, the first communication pipe 33 penetrates through the partition board, the suction port 31 of the silencer is arranged on the side wall of the first expansion cavity 28, one port of the first communication pipe 33 is communicated with the suction port 31, the first communication pipe 33 is of a U-shaped structure, the bending part is positioned in the second expansion cavity 27, the side wall of the bending part is provided with an air port 31, and the first expansion cavity 28 and the second expansion cavity 27 are communicated with the other port of the first communication pipe 33 through the air port 31, so that refrigerant gas can be stored in the cavity; the length and the sectional area of the first communication pipe 33 need to be designed according to the actual displacement of the compressor. The second communication pipe 34 is used to lead out the suction air in the first expansion chamber 28. And filter screens 22 for filtering impurities are arranged at the inlets of the two communicating pipes, and the filter screens 22 are square and need to be welded.

As shown by the line segment with an arrow in fig. 1, the gas flow enters the first communicating pipe 33 from the gas inlet 25, part of the gas is sent to the second expansion chamber 27 through the gas inlet 31, is partially silenced in the second expansion chamber 27, is sent to the first expansion chamber 28 through the gas inlet 31, is subjected to secondary silencing treatment, and is finally led out through the second communicating pipe 34.

The first communicating pipe 33 is designed into a U-shaped structure, the length of the communicating pipe can be adjusted to the maximum extent, the natural frequency of the air column is the same as or close to the running frequency of the compressor, the frequency resonates, and the air displacement is improved.

According to another embodiment of the present application, there is provided a compressor including the muffler as described above.

In some embodiments, a muffler is provided on a cylinder head of the compressor.

The silencer can also be arranged at other positions of the compressor, and only the suction gas is conveniently led into the cylinder, so that the silencing effect can be achieved.

In some embodiments, the suction port of the compressor communicates with the inlet 25 of the muffler, and the outlet 26 of the muffler communicates with the inlet of the air chamber of the compressor.

It is easily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims

1. A muffler, comprising:

the sealed shell comprises an air inlet (25) and an air outlet (26); be equipped with separator, first communicating pipe (33) and second communicating pipe (34) in the sealed casing, the separator will sealed casing internal separation is two different cavities of volume: a first expansion chamber (28) and a second expansion chamber (27); the air inlet (25) is arranged on the wall of the first expansion cavity (28);

the first communicating pipe (33) comprises a U-shaped section which is arranged on the isolating piece in a penetrating manner, the bottom of the U-shaped section is arranged in the second expansion cavity (27), and an air port (31) is arranged on the outer wall of the lowest end of the U-shaped section; one end of the U-shaped section is communicated with the air inlet (25), and the other end of the U-shaped section is communicated with the first expansion cavity (28); the second communication pipe (34) communicates the first expansion chamber (28) with the air outlet (26).

2. A silencer according to claim 1, characterized in that the flow channel in the first duct (33) is wave-shaped or Z-shaped in the flow direction.

3. A silencer according to claim 1 or 2, characterized in that the ratio of the volumes of the first expansion chamber (28) and the second expansion chamber (27) is 1.5-3: 1.

4. The muffler according to claim 1, wherein the sealed housing comprises an upper housing (1) and a lower housing (2), and the upper housing (1) and the lower housing (2) are buckled to form the sealed housing.

5. The muffler according to claim 4, wherein the spacer comprises a partition and a slot (23), the partition being sealingly inserted in the slot (23); the partition plate is arranged on the upper shell (1), and the clamping groove (23) is arranged on the lower shell (2); or the partition plate is arranged on the lower shell (2), and the clamping groove (23) is arranged on the upper shell (1).

6. A silencer according to claim 1, characterized in that the inlet of the first communication pipe (33) is provided with a sieve (22) and/or that the inlet of the second communication pipe (34) is provided with a sieve (22).

7. A compressor, characterized by comprising a muffler as claimed in any one of claims 1 to 6.

8. The compressor of claim 7, wherein the muffler is provided on a cylinder head of the compressor.

9. A compressor according to claim 7 or 8, characterized in that the suction inlet of the compressor communicates with the inlet (25) of the silencer and the outlet (26) of the silencer communicates with the inlet of the air chamber of the compressor.

10. A refrigerator comprising a muffler as claimed in any one of claims 1 to 6 or a compressor as claimed in any one of claims 7 to 9.