CN116292180A - Muffler for compressor and compressor - Google Patents
Muffler for compressor and compressor Download PDFInfo
- Publication number
- CN116292180A CN116292180A CN202111474341.9A CN202111474341A CN116292180A CN 116292180 A CN116292180 A CN 116292180A CN 202111474341 A CN202111474341 A CN 202111474341A CN 116292180 A CN116292180 A CN 116292180A
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- China
- Prior art keywords
- main
- muffler
- silencer
- cavity
- compressor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000003584 silencer Effects 0.000 claims abstract description 51
- 239000002184 metal Substances 0.000 claims abstract description 14
- 229920000642 polymer Polymers 0.000 claims abstract description 9
- 238000001746 injection moulding Methods 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 230000030279 gene silencing Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0083—Pulsation and noise damping means using blow off silencers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/125—Cylinder heads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a silencer for a compressor and the compressor, the compressor comprises a cylinder cover, the silencer comprises a main silencer, the main silencer is arranged on the cylinder cover, a main cavity is arranged in the main silencer, a secondary silencer is arranged in the main cavity of the main silencer, the secondary silencer comprises a secondary cavity wall, the secondary cavity wall is connected with the cylinder cover and/or the main cavity wall and forms a secondary cavity of the secondary silencer, a channel is arranged on the secondary cavity wall, openings at two ends of the channel are respectively connected and communicated with the secondary cavity of the secondary silencer and the main cavity of the main silencer, the secondary cavity of the secondary silencer is communicated with the main cavity of the main silencer through the channel, and the secondary cavity wall is made of high polymer or metal sheet metal parts. The invention effectively improves the transmission loss of the target frequency band and suppresses the noise of the air conditioner indoor unit.
Description
Technical Field
The invention relates to the field of compressors, in particular to a noise reduction muffler for a compressor and the compressor with the noise reduction muffler.
Background
The compressor is widely applied in production and life, but noise generated by the compressor during operation seriously affects physical and mental health of people, so that the noise treatment of the compressor is not slow.
A muffler is a device that allows airflow to pass through, while effectively attenuating noise. The device is mainly used for controlling and reducing the radiation of the air inlet and the air outlet of various aerodynamic devices or the noise transmitted along the pipeline. The muffler can be classified into resistive, composite, and variable frequency mufflers according to principles. The resistive muffler has good middle-high frequency silencing performance, and the resistive muffler has good low-frequency or low-medium frequency silencing performance, so that the effect of noise control of the compressor can be effectively achieved.
Silencers within rotor compressors are important noise reduction features. However, the existing muffler scheme has low noise reduction in certain frequency bands and cannot meet the noise requirements of the compressor. The external diameter and the height of the silencer are limited by the size of the upper cylinder cover and the position of the motor, and cannot be changed. Therefore, the improvement is needed in the muffler to improve the noise elimination and reduction performance.
Therefore, those skilled in the art have been working to develop a muffler for a compressor and a compressor having the same, which effectively increase the transmission loss of a target frequency band and suppress the noise of an air conditioner.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a silencer for a compressor and the compressor with the silencer, which effectively improves the transmission loss of a target frequency band and suppresses the noise of an air conditioner indoor unit.
According to one aspect of the invention, there is provided a muffler for a compressor, the compressor comprising a cylinder head, the muffler comprising a main muffler, the main muffler being provided on the cylinder head, a main chamber being provided in the main muffler, a secondary muffler being provided in the main chamber of the main muffler, the secondary muffler comprising a secondary chamber wall, the secondary chamber wall being connected to the cylinder head and/or the main chamber wall and forming a secondary chamber of the secondary muffler, a passage being provided in the secondary chamber wall, openings at both ends of the passage being connected to and communicating with a secondary chamber of the secondary muffler, the main chamber of the main muffler, respectively, the secondary chamber of the secondary muffler being in communication with the main chamber of the main muffler through the passage, the secondary chamber wall being made of a high molecular polymer or a metallic sheet metal part.
The method is characterized in that: the high molecular polymer is plastic or rubber.
The method is characterized in that: the secondary cavity wall is manufactured by injection molding or stamping.
The method is characterized in that: the main muffler comprises a main cavity wall, wherein the main cavity wall is connected with the cylinder cover, and the main cavity wall and the cylinder cover form the main muffler main cavity.
The method is characterized in that: the secondary cavity wall is provided with a plurality of holes and/or pipes, and the holes and/or pipes form a channel of the secondary muffler.
The method is characterized in that: and a plurality of holes or pipes are arranged on the secondary cavity wall, and the holes or pipes and the main cavity wall or the cylinder cover form a channel of the secondary silencer together.
The method is characterized in that: the pore sizes of the plurality of pores are the same or different from each other.
The method is characterized in that: the extending directions of the several tubes are the same or different from each other.
The method is characterized in that: the number of the secondary cavities is more than or equal to 1.
According to another aspect of the present invention, there is provided a compressor including the above-described muffler for a compressor.
The silencer for the compressor and the compressor with the silencer effectively improve the transmission loss of a target frequency band and inhibit the noise of an air conditioner.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings.
FIG. 1 is a schematic view of the external structure of a muffler according to an embodiment of the present invention;
fig. 2 is a schematic view showing an internal structure of a muffler for a compressor according to an embodiment of the present invention;
fig. 3 to 6 are schematic structural views of a muffler for a compressor according to various embodiments of the present invention.
Reference numerals
1. Cylinder cover
2. Main cavity wall
3. Secondary cavity
4. Channel
5. Exhaust port
6. Secondary cavity wall
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted.
As shown in fig. 1, in an embodiment of the present invention, there is provided a muffler for a compressor and a compressor, preferably a rotary rotor compressor, having the same.
In combination with the one shown in fig. 2, the compressor comprises a cylinder head 1. The muffler includes a primary muffler and a secondary muffler. The main muffler is arranged on the cylinder cover 1, and a main cavity serving as a silencing cavity is arranged in the main muffler. The secondary muffler is arranged in the main cavity of the main muffler. A secondary chamber 3 is also provided in the secondary muffler as a sound deadening chamber. The main cavity of the main silencer is connected with the secondary cavity 3 of the secondary silencer through a channel 4 arranged on the secondary silencer.
As shown in fig. 1, the main muffler includes a main chamber wall 2. The main chamber wall 2 is connected to the cylinder head 1.
The main cavity wall 2 is formed with a recess in its shape and covers the cylinder head 1. The space formed between the main cavity wall 2 and the cylinder cover 1 is the main cavity of the main silencer. In combination with the main chamber of the main muffler also comprising a secondary chamber 3 of the secondary muffler, as shown in figure 2. The secondary muffler may be 1 or more. The number of secondary cavities 3 may be 1 or more. The secondary cavity 3 is positioned in the main cavity, and the secondary cavity 3 is communicated with the main cavity through a channel 4 of the secondary muffler, so that a Helmholtz muffler is formed, and the sound attenuation of a specific frequency band is increased.
As shown in fig. 2, the secondary muffler includes a secondary chamber wall 6. The secondary chamber wall 6 is connected with the cylinder cover 1 and/or the main chamber wall 2, and a space serving as a silencing chamber is formed between the secondary chamber wall and the cylinder cover, so that a secondary chamber 3 of the secondary silencer can be formed.
The secondary chamber wall 6 is preferably made of a high molecular polymer or metal sheet metal part. And is made by injection molding or stamping.
According to the embodiment of the invention, the design of the silencer with the inner-layer cavity formed by injection molding or stamping of the high polymer or the metal piece can increase the sound attenuation amount of a specific frequency band and reduce the single noise of the compressor.
As shown in fig. 2-4, the secondary chamber wall 6 is preferably made of a high molecular polymer, preferably rubber or plastic. Rubber or plastic has certain hardness and meets the hardness requirement. And is preferably an engineering plastic. The high molecular polymer is made into the secondary cavity wall 6 by injection molding or stamping.
And preferably the secondary chamber wall 6 is connected to the cylinder head 1 to form the secondary chamber 3.
The shape of the secondary cavity wall 6 is groove-shaped, and a space formed between the secondary cavity wall 6 and the cylinder cover 1 is a secondary cavity 3. And preferably, the secondary cavity wall 6 is provided with a buckle, and the buckle is connected with the clamping position on the cylinder cover 1, so that the device is convenient to install on the cylinder cover 1. And preferably compress tightly inside subassembly through outer muffler, outer muffler inner wall is spacing, realizes the location of subassembly.
As shown in fig. 5-6, in an embodiment of the invention, the secondary chamber wall 6 is preferably a sheet metal part. The secondary cavity wall 6 is connected with the cylinder cover 1 and the main cavity wall 2.
The shape of the secondary cavity wall 6 is groove-shaped, and a space formed between the secondary cavity wall 6 and the cylinder cover 1 as well as between the secondary cavity wall 2 is the secondary cavity 3. And the secondary cavity wall 6 preferably determines the mutual installation position through the positioning point of the main cavity wall 2, and the sheet metal part and the outer silencer are fixed through welding.
As shown in fig. 1 and 5, in an embodiment of the present invention, it is preferable that the cylinder head 1 of the compressor is an upper cylinder head. The cylinder cover 1 is also provided with an exhaust port 5. The secondary chamber 3 does not cover the exhaust port of the upper cylinder head, i.e. the gas discharged from the exhaust port of the cylinder head 1 does not directly enter the secondary chamber 3.
As shown in fig. 5, in an embodiment of the invention, it is preferred that the secondary chamber wall 6 is provided with holes or/and tubes. The holes or/and tubes together form a channel 4 of the secondary chamber 3 in the secondary muffler. The pore diameters of the plurality of pores are the same or different from each other, and the pores can be uniformly distributed or distributed at intervals.
The number of tubes is 1 or more. The tube forms a channel 4 of the secondary chamber 3 in the secondary muffler, the orientation and extension of which can be determined according to the muffling frequency.
As shown in fig. 2, preferably 2 tubes are provided on the minor cavity wall 6. The tubes form passages 4,2 of the secondary chamber 3 in the secondary muffler, each extending towards the outside of the secondary chamber 3.
In addition, as shown in fig. 3, in the embodiment of the present invention, it is preferable that the main muffler and the sub-muffler are integrally formed, the sub-chamber 3 is integrally formed with the main chamber, and the sub-chamber wall 6 is formed together with the main chamber wall 2.
The invention is described below in the following by way of specific examples:
example 1
As shown in fig. 1 and 2, a muffler for a compressor and a rotary rotor compressor having the same.
As shown in fig. 1, the compressor includes a cylinder head 1. The muffler includes a primary muffler and a secondary muffler. The main muffler comprises a main chamber wall 2. The main chamber wall 2 is connected to the cylinder head 1.
The main cavity wall 2 is in a groove shape, and a space between the main cavity wall 2 and the cylinder cover 1 is a main cavity of the silencer.
In combination with the main chamber of the main muffler, as shown in fig. 2, there is also included 1 secondary muffler, in which secondary muffler a secondary chamber wall 6 is provided. The secondary chamber wall 6 is an assembly formed from plastics by injection moulding. The secondary chamber wall 6 is connected to the cylinder head 1.
The shape of the secondary cavity wall 6 is groove-shaped, and a space formed between the secondary cavity wall 6 and the cylinder cover 1 is a secondary cavity 3. The secondary cavity wall 6 is provided with a buckle which is connected with the clamping position on the cylinder cover 1, so that the device is convenient to install on the cylinder cover 1. The inner assembly is pressed by the outer silencer, the inner wall of the outer silencer is limited, and the assembly is positioned. The secondary cavity 3 is provided with a pipe with a semicircular section, and the pipe and the cylinder cover 2 jointly form a channel 4 of the secondary cavity 3, so that a Helmholtz silencer is formed, and the sound attenuation of a specific frequency band is increased.
Example 2
As shown in fig. 1 and 4, a muffler for a compressor and a rotary rotor compressor having the same.
As shown in fig. 1, the compressor includes a cylinder head 1. The muffler comprises a main chamber wall 2. The main chamber wall 2 is connected to the cylinder head 1.
The main cavity wall 2 is in a groove shape, and a space between the main cavity wall 2 and the cylinder cover 1 is a main cavity of the silencer.
In combination with the fact that the main chamber of the muffler also comprises 1 secondary chamber 3 as shown in fig. 4. The secondary chamber wall 6 is an assembly. The secondary chamber wall 6 is connected to the cylinder head 1.
The secondary cavity wall 6 is groove-shaped and is formed by injection molding plastic, and a space formed between the secondary cavity wall 6 and the cylinder cover 1 is the secondary cavity 3. The secondary cavity wall 6 is provided with a buckle which is connected with the clamping position on the cylinder cover 1, so that the device is convenient to install on the cylinder cover 1. The inner assembly is pressed by the outer silencer, the inner wall of the outer silencer is limited, and the assembly is positioned.
The secondary cavity wall 6 is provided with 6 large holes which mutually enclose a triangle. 5 small holes are arranged in a linear mode. The 6 large holes and the 5 small holes together form the channel 4 of the secondary chamber 3.
The secondary cavity 3 is positioned in the main cavity, and the secondary cavity 3 is communicated with the main cavity through the channel 4, so that a Helmholtz silencer is formed, and the sound attenuation of a specific frequency band is increased.
Example 3
As shown in fig. 1 and 3, a muffler for a compressor and a rotary rotor compressor having the same.
As shown in fig. 1, the compressor includes a cylinder head 1. The muffler comprises a main chamber wall 2. The main chamber wall 2 is connected to the cylinder head 1.
The main cavity wall 2 is in a groove shape, and a space between the main cavity wall 2 and the cylinder cover 1 is a main cavity of the silencer.
In combination with the fact that as shown in fig. 6, the main chamber of the muffler also comprises 1 secondary chamber 3 formed by secondary chamber walls 6. The secondary chamber wall 6 is integrally formed with the primary chamber wall 2.
The secondary chamber wall 6 is provided with a tube. The section of the pipe is in a semicircular arc shape. The tube extends towards the interior of the secondary chamber 3. The semi-circular arc-shaped tube and the cylinder head 1 together form a channel 4 of the secondary chamber 3.
The secondary cavity 3 is positioned in the main cavity, and the secondary cavity 3 is communicated with the main cavity through the channel 4, so that a Helmholtz silencer is formed, and the sound attenuation of a specific frequency band is increased.
Example 4
As shown in fig. 1, 5 and 6, a muffler for a compressor and a rotary rotor compressor having the same.
As shown in fig. 1, the compressor includes a cylinder head 1. The muffler comprises a main chamber wall 2. The main chamber wall 2 is connected to the cylinder head 1.
The main cavity wall 2 is in a groove shape, and a space between the main cavity wall 2 and the cylinder cover 1 is a main cavity of the silencer.
The main chamber of the muffler also includes 1 secondary chamber 3. The secondary cavity wall 6 is a sheet metal part. The secondary cavity wall 6 is connected with the cylinder cover 1 and the main cavity wall 2.
The shape of the secondary cavity wall 6 is a groove shape and is a metal sheet metal part, and a space formed between the secondary cavity wall 6 and the cylinder cover 1 as well as between the secondary cavity wall 2 and the main cavity wall 2 is a secondary cavity 3. The secondary cavity wall 6 is used for determining the mutual installation position through the positioning points of the main cavity wall 2, and the sheet metal part, the outer-layer main muffler and the cylinder cover 1 are fixed through welding.
The secondary chamber wall 6 is provided with a tube and an opening. The section of the pipe is in a semicircular arc shape. The tube extends towards the interior of the secondary chamber 3. The semicircular arc-shaped pipe and the cylinder cover 1 form a semicircular channel, and the semicircular channel and the open hole on the secondary cavity wall 6 jointly form a channel 4 of the secondary cavity 3.
The secondary cavity 3 is positioned in the main cavity, and the secondary cavity 3 is communicated with the main cavity through the channel 4, so that a Helmholtz silencer is formed, and the sound attenuation of a specific frequency band is increased.
In summary, the silencer for the compressor and the compressor with the silencer for the compressor increase the silencing amount of a specific frequency band and reduce the noise of a single compressor.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these shall be considered to be within the scope of the invention.
Claims (10)
1. The silencer for the compressor is characterized by comprising a cylinder cover (1), wherein the silencer comprises a main silencer, the main silencer is arranged on the cylinder cover (1), a main cavity is arranged in the main silencer, a secondary silencer is arranged in the main cavity of the main silencer, the secondary silencer comprises a secondary cavity wall (6), the secondary cavity wall (6) is connected with the cylinder cover (1) and/or the main cavity wall (2) and forms a secondary cavity (3) of the secondary silencer, a channel (4) is arranged on the secondary cavity wall (6), openings at two ends of the channel (4) are respectively connected with and communicated with the secondary cavity (3) of the secondary silencer, the secondary cavity (3) of the secondary silencer is communicated with the main cavity through the channel (4), and the secondary cavity wall (6) is made of a high-molecular polymer or metal sheet metal part.
2. The muffler for a compressor according to claim 1, wherein: the high molecular polymer is plastic or rubber.
3. The muffler for a compressor according to claim 1, wherein: the secondary chamber wall (6) is produced by injection moulding or stamping.
4. The muffler for a compressor according to claim 1, wherein: the main muffler comprises a main cavity wall (2), the main cavity wall (2) is connected with the cylinder cover (1), and the main cavity wall (2) and the cylinder cover (1) form the main muffler main cavity.
5. The muffler for a compressor according to claim 1, wherein: the secondary chamber wall (6) is provided with a plurality of holes and/or pipes which form the channels (4) of the secondary muffler.
6. The muffler for a compressor according to claim 1, wherein: the secondary cavity wall (6) is provided with a plurality of holes or pipes, and the holes or pipes and the main cavity wall (2) or the cylinder cover (1) form a channel (4) of the secondary muffler together.
7. The muffler for a compressor according to claim 5 or 6, wherein: the pore sizes of the plurality of pores are the same or different from each other.
8. The muffler for a compressor according to claim 5 or 6, wherein: the extending directions of the several tubes are the same or different from each other.
9. The muffler for a compressor according to claim 1, wherein: the number of the secondary cavities (3) is more than or equal to 1.
10. A compressor, characterized in that: comprising a muffler for a compressor according to any one of claims 1 to 6, 9.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111474341.9A CN116292180A (en) | 2021-12-03 | 2021-12-03 | Muffler for compressor and compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111474341.9A CN116292180A (en) | 2021-12-03 | 2021-12-03 | Muffler for compressor and compressor |
Publications (1)
Publication Number | Publication Date |
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CN116292180A true CN116292180A (en) | 2023-06-23 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202111474341.9A Pending CN116292180A (en) | 2021-12-03 | 2021-12-03 | Muffler for compressor and compressor |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116221072A (en) * | 2021-12-03 | 2023-06-06 | 上海海立电器有限公司 | Muffler for compressor and compressor |
Citations (6)
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CN105673445A (en) * | 2016-01-18 | 2016-06-15 | 广东美芝制冷设备有限公司 | Silencing assembly for compressor, and compressor with same |
CN109404257A (en) * | 2018-11-26 | 2019-03-01 | 珠海凌达压缩机有限公司 | Silencer, compressor and refrigerating system |
CN208996963U (en) * | 2018-10-08 | 2019-06-18 | 珠海凌达压缩机有限公司 | Silencer and compressor |
CN211715330U (en) * | 2019-11-13 | 2020-10-20 | 珠海凌达压缩机有限公司 | Silencer and compressor |
CN113027768A (en) * | 2019-12-25 | 2021-06-25 | 广东美的白色家电技术创新中心有限公司 | Silencer and optimization method thereof, compressor, heat exchange system and electrical equipment |
CN116221072A (en) * | 2021-12-03 | 2023-06-06 | 上海海立电器有限公司 | Muffler for compressor and compressor |
-
2021
- 2021-12-03 CN CN202111474341.9A patent/CN116292180A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105673445A (en) * | 2016-01-18 | 2016-06-15 | 广东美芝制冷设备有限公司 | Silencing assembly for compressor, and compressor with same |
CN208996963U (en) * | 2018-10-08 | 2019-06-18 | 珠海凌达压缩机有限公司 | Silencer and compressor |
CN109404257A (en) * | 2018-11-26 | 2019-03-01 | 珠海凌达压缩机有限公司 | Silencer, compressor and refrigerating system |
CN211715330U (en) * | 2019-11-13 | 2020-10-20 | 珠海凌达压缩机有限公司 | Silencer and compressor |
CN113027768A (en) * | 2019-12-25 | 2021-06-25 | 广东美的白色家电技术创新中心有限公司 | Silencer and optimization method thereof, compressor, heat exchange system and electrical equipment |
CN116221072A (en) * | 2021-12-03 | 2023-06-06 | 上海海立电器有限公司 | Muffler for compressor and compressor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116221072A (en) * | 2021-12-03 | 2023-06-06 | 上海海立电器有限公司 | Muffler for compressor and compressor |
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