CN114183365A - Compressor and air conditioner - Google Patents
Compressor and air conditioner Download PDFInfo
- Publication number
- CN114183365A CN114183365A CN202111516378.3A CN202111516378A CN114183365A CN 114183365 A CN114183365 A CN 114183365A CN 202111516378 A CN202111516378 A CN 202111516378A CN 114183365 A CN114183365 A CN 114183365A
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- CN
- China
- Prior art keywords
- compressor
- heat
- sound
- cotton body
- absorbing cotton
- Prior art date
- 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.)
- Granted
Links
- 229920000742 Cotton Polymers 0.000 claims abstract description 67
- 239000003973 paint Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 4
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 239000011491 glass wool Substances 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 239000011490 mineral wool Substances 0.000 claims description 3
- 239000011496 polyurethane foam Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 21
- 238000007906 compression Methods 0.000 abstract description 14
- 239000011148 porous material Substances 0.000 abstract description 14
- 239000002918 waste heat Substances 0.000 abstract description 11
- 230000017525 heat dissipation Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000000926 separation method Methods 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
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
- F04C29/063—Sound absorbing materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/045—Heating; Cooling; Heat insulation of the electric motor in hermetic pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
- F04C29/068—Silencing the silencing means being arranged inside the pump housing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The invention provides a compressor and an air conditioner, wherein the compressor comprises a sound absorption cotton body, the sound absorption cotton body is of a porous structure, heat-conducting media are filled in pores of the sound absorption cotton body, the heat-conducting coefficient of the heat-conducting media is larger than that of air, the heat-conducting coefficient of the heat-conducting media is larger than that of the sound absorption cotton body, the heat resistance of the sound absorption cotton is effectively reduced, the waste heat of the compressor is effectively and rapidly led into the environment side, the heat dissipation of the compressor to the environment is enhanced, the influence of the waste heat on the air suction process and the compression process of the compressor is effectively reduced, the air suction amount is increased, the refrigerating capacity is increased, and the COP of the compressor is obviously increased.
Description
Technical Field
The invention belongs to the technical field of compressors, and particularly relates to a compressor and an air conditioner.
Background
The high efficiency is the most urgent requirement of the domestic rotor compressor in recent years, and theoretical and experimental researches find that when the compressor runs, the loss of a compressor motor and a pump body mechanical structure generates waste heat which directly heats the air suction and compression process of the compressor in the compressor, so that the air suction amount and the compression power consumption are influenced, and the performance of the compressor is deteriorated. The compressor is applied to an air conditioning system, because the noise reduction requirement generally wraps the sound absorption cotton outside the compressor, the sound absorption cotton is generally made of porous materials such as felts, and sound is drilled in the pores of the felts to consume energy, so that the purpose of noise reduction is achieved. However, the felt is made of porous material, the air is usually filled in the gap, and the thermal conductivity coefficient of the air is low, which means that the sound-absorbing cotton keeps the temperature of the compressor, so that the heat of the compressor cannot be timely dissipated into the environment, the effective air suction quantity of the compressor is directly influenced, and the compression power consumption is deteriorated, so that the energy efficiency of the compressor is seriously influenced.
Therefore, the heat exchange between the shell of the compressor and the environment can be enhanced when the noise of the compressor is reduced and transmitted outwards, the heat generated by the loss of the motor of the compressor and the compression process is dissipated to the environment in time, the suction heating is weakened, and the cold quantity and the energy efficiency of the compressor are effectively improved.
Disclosure of Invention
Therefore, the invention aims to solve the technical problem of poor heat dissipation caused by the sound absorption cotton wrapped outside the existing compressor. Thereby providing a compressor and an air conditioner.
In order to solve the above problems, the present invention provides a compressor, which includes a sound-absorbing cotton body, wherein the sound-absorbing cotton body is of a porous structure, and heat-conducting media are filled in pores of the sound-absorbing cotton body, and have a thermal conductivity greater than that of air and a thermal conductivity greater than that of the sound-absorbing cotton body.
In some embodiments, the sound-absorbing cotton body is made of at least one of felt, blanket, slag wool, centrifugal glass wool, polyurethane foam, and soft foam.
In some embodiments, the heat transfer medium comprises at least one of a gaseous medium, a liquid medium, and a solid medium.
In some embodiments, the liquid medium comprises a metal thermal grease or engine oil.
In some embodiments, the thermal conductivity of the metallic thermal paste is no less than 128W/m.K.
In some embodiments, the side of the sound absorbing cotton body remote from the compressor is provided with a coating material having a higher emissivity than the sound absorbing cotton body.
In some embodiments, the coating material is a paint layer, and the paint layer is black or white paint.
In some embodiments, the paint layer is mixed with CuO such that the incidence of paint layers is not less than 0.96.
In some embodiments, the sound-absorbing cotton further comprises an upper cover, a shell and a lower cover which are fixedly connected in sequence, and the sound-absorbing cotton body is wrapped and fixed on the outer side of at least one of the upper cover, the shell and the lower cover.
The invention also provides an air conditioner which comprises the compressor.
The compressor provided by the invention has the following beneficial effects:
the invention provides a compressor, which comprises a sound absorption cotton body, wherein the sound absorption cotton body is of a porous structure, heat-conducting media are filled in pores of the sound absorption cotton body, the heat-conducting coefficient of the heat-conducting media is larger than that of air, and the heat-conducting coefficient of the heat-conducting media is larger than that of the sound absorption cotton body, so that the heat resistance of the sound absorption cotton is effectively reduced, the waste heat of the compressor is effectively and rapidly led to the environment side, the heat dissipation of the compressor to the environment is enhanced, the influence of the waste heat on the air suction process and the compression process of the compressor is effectively reduced, the air suction amount is increased, the refrigerating capacity is increased, and the COP of the compressor is obviously increased.
On the other hand, the air conditioner provided by the present invention is manufactured based on the compressor, and the beneficial effects of the air conditioner refer to the beneficial effects of the compressor, which are not described herein again.
Drawings
FIG. 1 is a schematic view of a sound-absorbing cotton structure of a conventional compressor;
FIG. 2 is a schematic structural view of a sound-absorbing cotton body of a compressor according to an embodiment of the present invention;
the reference numerals are represented as:
10. a sound absorbing cotton body; 11. a pore; 12. a paint layer; 20. an upper cover; 30. a housing; 40. and (7) a lower cover.
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 clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. 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 embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In traditional air conditioner trade, in order to promote user experience, the influence of separation compressor noise to people's life, often inhale the sound cotton in the peripheral parcel of compressor, it generally is porous material to inhale the cotton material of sound, the gas in packing space generally is the air, it plays the thermal-insulated effect of heat preservation when inhaling the sound cotton, from the angle that improves the efficiency, do the transmission that keeps warm and block the harmful heat that the compressor produced to atmospheric environment for the compressor, the inside that leads to harmful heat transfer to the compressor is breathed in and the compression process, the effective inspiratory capacity and the compression work that seriously influence the compressor, the conventional sound cotton back of inhaling of compressor parcel, the common expression is that the refrigeration capacity reduces, the compressor efficiency is showing and is reducing.
Fig. 1 shows the sound-absorbing cotton of the conventional compressor, which is formed and assembled, and the compressor casing comprises an upper cover 20, a shell 30 and a lower cover 40 fixedly connected in sequence, and the sound-absorbing cotton is wrapped on the outer sides of the upper cover 20, the shell 30 and the lower cover 40. The pores 11 of the sound-absorbing cotton body 10 are filled with air. The compressor motor is composed of a motor stator and a motor rotor, and the compressor pump body is composed of an upper flange, a cylinder, a roller, a crankshaft and a lower flange. Compressor pump body compression later stage and motor are because of iron loss, copper loss produce a large amount of heat flows, and the heat flow is often that where the thermal resistance is little to flow, and the conventional compressor periphery has wrapped up the sound cotton of inhaling that is made by porous material, because of filled low coefficient of thermal conductivity's air in porous material's the aperture for inhale the sound cotton and have good heat preservation function, the thermal resistance that the compressor conducts heat to the environment is very big promptly. Compared with the thermal resistance transferred to the atmospheric environment, the thermal resistance for transferring heat to the internal air suction channel is smaller, because the pump body of the internal compressor is generally made of metal materials and is directly communicated through the shell, the heat is transferred through metal heat conduction, therefore, most of heat generated by the operation of the compressor is transferred to the internal air suction with small thermal resistance, namely the air suction is heated, the air suction specific volume is increased, the air suction mass flow is reduced, the refrigerating capacity of the compressor is reduced, and the energy efficiency of the compressor is reduced due to the fact that the heating is deteriorated in the compression process.
In order to solve the technical problem that the sound absorption cotton wrapped outside the existing compressor causes poor heat dissipation.
Referring to fig. 2, the present invention provides a compressor, which includes a sound-absorbing cotton body 10, wherein the sound-absorbing cotton body 10 is a porous structure, and a heat-conducting medium is filled in a pore 11 of the sound-absorbing cotton body 10, and has a heat-conducting coefficient greater than that of air and a heat-conducting coefficient greater than that of the sound-absorbing cotton body 10.
The pores 11 of the sound-absorbing cotton body 10 of the compressor of the embodiment are filled with heat-conducting media, the heat-conducting coefficient of the heat-conducting media is larger than that of air, the heat-conducting coefficient of the heat-conducting media is larger than that of the sound-absorbing cotton body, the heat resistance of the sound-absorbing cotton is effectively reduced, waste heat of the compressor is effectively and rapidly led into the environment side, the heat dissipation of the compressor to the environment is enhanced, the influence of the waste heat on the air suction process and the compression process of the compressor is effectively reduced, the air suction amount is increased, the refrigerating capacity is increased, and the COP of the compressor is remarkably increased.
In addition, the compressor sound absorption cotton body 10 of the embodiment still has the sound absorption function.
In some embodiments, the sound-absorbing cotton body 10 is made of at least one material selected from felt, blanket, slag wool, centrifugal glass wool, polyurethane foam, soft foam, and the like.
In some embodiments, the heat transfer medium includes at least one medium of a gaseous medium, a liquid medium, a solid medium, and the like.
In some embodiments, the liquid medium comprises a metallic thermal grease or oil, or the like.
Wherein the heat conductivity coefficient of the metal heat conducting paste is not lower than 128W/m.K.
In the embodiment, the porous gaps are filled in the pores 11 of the sound absorption cotton body 10 of the compressor, and the machine metal heat conduction paste or engine oil and other media with high heat conductivity, low fluidity and strong adhesion are filled in the porous gaps, wherein the heat conductivity coefficient of the metal heat conduction paste is up to 128W/m.K, the heat conductivity of the sound absorption cotton body 10 of the compressor is improved, the heat resistance of the sound absorption cotton is effectively reduced, the waste heat of the compressor is effectively and rapidly led into the environment side, the heat dissipation of the compressor to the environment is enhanced, the influence of the waste heat on the air suction process and the compression process of the compressor is effectively reduced, the air suction quantity is improved, the refrigerating capacity is accordingly improved, and the COP of the compressor is obviously improved.
In some embodiments, the side of the sound absorbing cotton body 10 remote from the compressor is provided with a coating material having a higher emissivity than the sound absorbing cotton body 10.
It should be noted that the ratio of the radiation force of the actual object to the radiation force of the black body at the same temperature is called emissivity, and emissivity is related to the temperature of the object in addition to the nature of the object. The emissivity is also called black rate or blackness, the larger the emissivity is, the larger the radiation heat exchange capacity to the external environment is, and the maximum blackbody emissivity is 1.
This embodiment is provided with the coating material that emissivity is high than inhaling cotton body 10 of sound is provided with through inhaling one side that cotton body 10 kept away from the compressor of sound, improve and inhale the external heat dissipation of cotton body 10 of sound, the increase of surface thermal emissivity, can strengthen in the heat gives off to external environment, effectively reduce and inhale the cotton thermal resistance of sound, effectively introduce into the environment side with compressor used heat rapidly, strengthen the compressor and dispel the heat to the environment, effectively reduce the influence of used heat to compressor inspiration process and compression process, improve the air suction capacity, thereby promote the refrigeration capacity, and show the COP who promotes the compressor.
In some embodiments, the coating material is a paint layer 12, and the paint layer 12 is a black or white paint.
This embodiment adopts the black or white of high emissivity to improve and inhale sound cotton body 10 and dispel the heat to the outside.
In some embodiments, CuO is mixed into paint layer 12 such that the incidence of paint layer 12 is not less than 0.96.
This embodiment improves the emissivity of paint layer 12 through thoughtlessly having CuO in paint layer 12, make the incidence of paint layer 12 be not less than 0.96, the emissivity of thoughtlessly having CuO paint layer 12 reaches up to 0.96 and then improves and inhale the cotton body 10 external heat dissipation of sound, the increase of surface thermal emissivity, can strengthen in the heat gives off to the external environment, effectively reduce and inhale the cotton thermal resistance of sound, effectively introduce into the environment side with compressor waste heat rapidly, strengthen the compressor and dispel the heat to the environment, effectively reduce the influence of waste heat to compressor inspiration process and compression process, improve the amount of breathing in, thereby promote the refrigerating output, and show the COP who promotes the compressor.
In some embodiments, the sound absorption cotton further comprises an upper cover 20, a shell 30 and a lower cover 40 which are fixedly connected in sequence, and the sound absorption cotton body 10 is wrapped and fixed on the outer side of at least one of the upper cover 20, the shell 30 and the lower cover 40.
The best embodiment is tested and verified by a 1.5HP compressor, the effect is obvious, the refrigerating capacity is obviously improved under 5 key working conditions of an APF evaluation system shown in Table 1, the improvement range is 1.5-3.9%,
the power is slightly increased by 0.2-2.6%, the COP is increased by 1.3-2.5%, and the effect is very obvious.
TABLE 1
The invention also provides an air conditioner which comprises the compressor.
It is easily understood by those skilled in the art that the above-described modes can be freely combined and superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a compressor, its characterized in that, is including inhaling cotton body of sound (10), it is porous structure to inhale cotton body of sound (10), it has the heat-conducting medium to fill in hole (11) of inhaling cotton body of sound (10), the heat conductivity of heat-conducting medium is great than the heat conductivity of air, the heat conductivity of heat-conducting medium is great than the heat conductivity of inhaling cotton body of sound (10).
2. Compressor according to claim 1, characterized in that the sound-absorbing cotton body (10) is made of at least one material of felt, blanket, slag wool, centrifugal glass wool, polyurethane foam and soft foam.
3. The compressor of claim 1, wherein the heat transfer medium comprises at least one of a gaseous medium, a liquid medium, and a solid medium.
4. The compressor of claim 3, wherein the liquid medium comprises a metallic thermal grease or an oil.
5. The compressor of claim 4, wherein the thermal conductivity of the metallic thermal paste is not less than 128W/m.K.
6. Compressor according to claim 1, characterized in that the side of the sound-absorbing cotton body (10) facing away from the compressor is provided with a coating material having a higher emissivity than the sound-absorbing cotton body (10).
7. The compressor according to claim 6, characterized in that said coating material is a paint layer (12), said paint layer (12) being a black or white paint.
8. Compressor according to claim 7, characterized in that said paint layer (12) incorporates CuO, so that the incidence of said paint layer (12) is not less than 0.96.
9. The compressor according to any one of claims 1 to 8, further comprising an upper cover (20), a housing (30) and a lower cover (40) fixedly connected in sequence, wherein the sound-absorbing cotton body (10) is wrapped and fixed on the outer side of at least one of the upper cover (20), the housing (30) and the lower cover (40).
10. An air conditioner characterized by comprising the compressor of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111516378.3A CN114183365B (en) | 2021-12-08 | 2021-12-08 | Compressor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111516378.3A CN114183365B (en) | 2021-12-08 | 2021-12-08 | Compressor and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114183365A true CN114183365A (en) | 2022-03-15 |
| CN114183365B CN114183365B (en) | 2022-10-25 |
Family
ID=80543426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111516378.3A Active CN114183365B (en) | 2021-12-08 | 2021-12-08 | Compressor and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114183365B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004191451A (en) * | 2002-12-09 | 2004-07-08 | Showa Electric Wire & Cable Co Ltd | Sound absorbing material |
| CN106382211A (en) * | 2016-10-31 | 2017-02-08 | 美的集团股份有限公司 | Compressor, air-conditioner outdoor unit and air-conditioner |
| CN109340087A (en) * | 2018-11-23 | 2019-02-15 | 西安庆安制冷设备股份有限公司 | A kind of noise-reduce device for compressor and compressor |
| CN109545556A (en) * | 2018-11-05 | 2019-03-29 | 铜陵市超越电子有限公司 | A kind of ultra-quiet type new energy thin film capacitor |
| CN208723689U (en) * | 2018-07-27 | 2019-04-09 | 江苏华源防爆电机有限公司 | A kind of threephase asynchronous sound insulation and noise reduction protective cover |
-
2021
- 2021-12-08 CN CN202111516378.3A patent/CN114183365B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004191451A (en) * | 2002-12-09 | 2004-07-08 | Showa Electric Wire & Cable Co Ltd | Sound absorbing material |
| CN106382211A (en) * | 2016-10-31 | 2017-02-08 | 美的集团股份有限公司 | Compressor, air-conditioner outdoor unit and air-conditioner |
| CN208723689U (en) * | 2018-07-27 | 2019-04-09 | 江苏华源防爆电机有限公司 | A kind of threephase asynchronous sound insulation and noise reduction protective cover |
| CN109545556A (en) * | 2018-11-05 | 2019-03-29 | 铜陵市超越电子有限公司 | A kind of ultra-quiet type new energy thin film capacitor |
| CN109340087A (en) * | 2018-11-23 | 2019-02-15 | 西安庆安制冷设备股份有限公司 | A kind of noise-reduce device for compressor and compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114183365B (en) | 2022-10-25 |
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