CN103383140B - Indoor air conditioner cabinet denoising structure, indoor air conditioner cabinet and air-conditioner - Google Patents
Indoor air conditioner cabinet denoising structure, indoor air conditioner cabinet and air-conditioner Download PDFInfo
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- CN103383140B CN103383140B CN201310146262.4A CN201310146262A CN103383140B CN 103383140 B CN103383140 B CN 103383140B CN 201310146262 A CN201310146262 A CN 201310146262A CN 103383140 B CN103383140 B CN 103383140B
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Abstract
The present invention is applicable to air-conditioning manufacturing technology field, provide a kind of indoor air conditioner cabinet denoising structure, indoor air conditioner cabinet and air-conditioning, this denoising structure comprises indoor machine housing and is opened in the air outlet on indoor machine housing, be provided with the exhausting plate that edge connects with the inwall of indoor machine housing in indoor machine housing, be formed with the air-out passage communicated with air outlet at exhausting plate near the side of air outlet; Exhausting plate encloses in the side and indoor machine housing that deviate from air outlet and is formed with a cavity, and exhausting plate is provided with multiple microperforated panel soundabsorbing construction; This indoor air conditioner cabinet and air-conditioner adopt aforementioned denoising structure, indoor air conditioner cabinet denoising structure provided by the invention can effectively reduce indoor air conditioner cabinet noise, improve noise tonequality, and it manufactures and assembling is simple, cost is lower, applicability is wide.This indoor air conditioner cabinet and air-conditioner noise little, the experience comfort level of user is good, and the competitiveness of product in market gets a promotion.
Description
Technical field
The invention belongs to air-conditioning equipment manufacturing technology field, more particularly, relate to a kind of indoor air conditioner cabinet denoising structure, the indoor air conditioner cabinet adopting this denoising structure and air-conditioner.
Background technology
In the environment such as people's daily life and modern handle official bussiness, oneself is widely used indoor air conditioner cabinet.Although the noise objective of air-conditioning products is own lower than national standard, the noise produced during air-conditioner running still seems bigger than normal, greatly have impact on the experience of user, can not meet the requirement of user.The noise that indoor machine produces comprises mechanical noise and pneumatic noise, but pneumatic noise is much larger than mechanical noise, pneumatic noise mainly comprises inlet noise, fan noise (rotational noise and vortex noise), heat exchanging evaporator noise and exhaust outlet noise.
The indoor machine ducting system of tradition cabinet-type air conditioner is made up of single suction centrifugal blower, and air-flow is entered by the air port, both sides of air inlet faceplate, flows to spiral case, then flow out after evaporator and wind outlet panel by centrifugation blade after being done work after commutation 90 degree.In order to reduce pneumatic noise, most effective method is the rotating speed reducing wind wheel, but the air velocity reduced in cabinet-type air conditioner also just reduces the total head of centrifugal blower, changing, certainly will reduce air circulation, affecting the refrigeration performance of air-conditioner if do not carried out other.For this reason, Chinese invention patent CN2495946Y disclosed a kind of fan driving structure reducing indoor cabinet machine of air conditioner draft noise on 06 19th, 2002, its structure by adjustment centrifugal fan and electrical installation, thus under air circulation and the nondecreasing prerequisite of heat exchange efficiency thereof, reduce charge air flow noise, but this invention is difficult to carry out in engineering and application.Chinese invention patent CN2864457Y disclosed the wind deflector of a kind of osmanthus bodyguard indoor air conditioner cabinet for 01 month 31 days in 2007, it adopts the wind deflector installing arc surface in inner top angular region, cabinet-type air conditioner chamber additional, make air-flow in uphill process due to circular arc wind-guiding face effect and smooth and easy outflow, eliminate eddy airstream, reduce air-supply noise, but actual reduction noise effects is poor.Chinese invention patent CN201314639Y disclosed a kind of cabinet air-conditioner indoor machine on 09 23rd, 2009, and it arranges several blind holes by the whirlpool tongue portion at spiral case, utilize multiple blind hole resonant structure to reduce noise, but actual noise reduction was also poor.Traditional inclination whirlpool tongue technology, adjustment centrifugal impeller external diameter and whirlpool tongue room technology, the noise reduction measures such as spiral case technology that absorb sound carry out noise reduction to indoor machine and have reached a limit, therefore seek a kind of method and apparatus reducing indoor machine noise simply and effectively, and then improve its design, raising noise quality, to opening up the new market of air-conditioning and consolidating existing market, there is very important meaning.
Summary of the invention
The object of the invention is to for above-mentioned existing cabinet air-conditioner noise by sound absorption spiral case, inclination whirlpool tongue, change the measure such as inlet and outlet after cabinet-type air conditioner carry out the problem that noise reduction has reached a limit, provide structure simple, be easy to processing, cost is lower and effectively can reduce the indoor air conditioner cabinet denoising structure of indoor air conditioner cabinet noise and adopt indoor air conditioner cabinet and the air-conditioner of this denoising structure.
For achieving the above object, the technical solution used in the present invention is: provide a kind of indoor air conditioner cabinet denoising structure, it comprises indoor machine housing and is opened in the air outlet on described indoor machine housing, be provided with the exhausting plate that edge connects with the inwall of described indoor machine housing in described indoor machine housing, be formed with the air-out passage communicated with described air outlet at described exhausting plate near the side of described air outlet; Described exhausting plate encloses in the side and described indoor machine housing that deviate from described air outlet and is formed with a cavity, and described exhausting plate is provided with multiple microperforated panel soundabsorbing construction.
Particularly, described microperforated panel soundabsorbing construction is micropore or micro chink.
Preferably, the aperture of described micropore is the width of 1 ~ 2mm or described micro chink is 1 ~ 2mm.
Further preferably, the punching rate of described micropore or described micro chink is 1% ~ 5%.
Preferably, described multiple micropore is that square arrangement distribution or equilateral triangle arrangement are distributed on described exhausting plate.
Particularly, described micro chink is laterally distributed or in genesis analysis or in diagonally distributing or being arranged on described exhausting plate in cross-distribution.
Particularly, the degree of depth of described cavity is 5 ~ 20cm.
Further, also sound-absorbing material layer is provided with in described cavity.
Preferably, described sound-absorbing material layer is arranged on the madial wall of described indoor machine housing.
Preferably, the thickness of described exhausting plate is 0.2 ~ 5mm.
Preferably, described exhausting plate is circular arc plate.
Compared with prior art, the beneficial effect of indoor air conditioner cabinet denoising structure provided by the invention is:
Owing to exhausting plate being provided with multiple microperforated panel soundabsorbing construction, exhausting plate is made to become microperforated panel, and microperforated panel soundabsorbing construction is the resonance sound-absorbing structure of a kind of low acoustic mass, high acoustic resistance, its performance is between sound-absorbing porous material and resonance sound-absorbing structure, its sound sucting band width can be better than conventional perforation board resonance sound absorption structure, has acoustic absorptivity height and the wide feature of sound absorption frequency; Simultaneously, certain depth air layer is left on rear side of exhausting plate, i.e. cavity, so the cavity after microperforated panel and plate forms Helmholtz silencer, utilize sound wave to pass out-of-date air to rub back and forth in aperture sound energy consumption, and utilize the size of cavity to control the resonant frequency at peak, the narrow-band noise of lower frequency can be absorbed.Microperforated panel is thin and close owing to boring a hole simultaneously, and acoustic resistance is larger, and acoustic mass is smaller, and acoustic resistance and the ratio of acoustic mass improve greatly, can realize broadband acoustical absorptivity.Therefore, it is possible to effectively reduce indoor air conditioner cabinet noise, improve noise tonequality, greatly promote the experience comfort level of air conditioner user, thus improve the competitiveness of product in market.In addition, indoor air conditioner cabinet denoising structure of the present invention also has manufacture and assembles the advantage simple, cost is lower, applicability is wide.The exhausting plate forming microperforated panel can be made with multiple materials such as such as aluminium sheet, steel plate, galvanized sheet, corrosion resistant plate, plastic plates, and the air layer after microperforated panel can load sound-absorbing porous material, therefore not water funk and moisture, not mould, do not eat into, cleanliness without any pollution, the impact of high velocity air can be born, therefore, microperforated panel soundabsorbing construction is in sqouynd absorption lowering noise with improve to have in indoor tone quality and apply very widely.
Present invention also offers a kind of indoor air conditioner cabinet, it comprises above-mentioned indoor air conditioner cabinet denoising structure.
Present invention also offers a kind of air-conditioner, it indoor set comprising off-premises station and be connected with described off-premises station, described indoor set is above-mentioned indoor air conditioner cabinet.
Indoor air conditioner cabinet provided by the invention and air-conditioner, owing to have employed above-mentioned indoor air conditioner cabinet denoising structure, the noise of its indoor machine is effectively reduced, noise tonequality is improved, substantially increase the experience comfort level of air conditioner user, product cost is well controlled simultaneously, complete machine usefulness is promoted, its market competitiveness thus be enhanced.
Accompanying drawing explanation
Fig. 1 is microperforated panel soundabsorbing construction principle schematic;
The perspective view of the indoor air conditioner cabinet denoising structure that Fig. 2 provides for the embodiment of the present invention one;
Fig. 3 is the front view of Fig. 2;
Fig. 4 be in Fig. 3 A-A to sectional structure chart;
Fig. 5 is B place partial enlarged drawing in Fig. 3;
Fig. 6 is C place partial enlarged drawing in Fig. 4;
Fig. 7 is micropore is square arrangement distribution schematic diagram;
Fig. 8 is micropore is equilateral triangle arrangement distribution schematic diagram;
The perspective view of the indoor air conditioner cabinet denoising structure that Fig. 9 provides for the embodiment of the present invention two;
Figure 10 is the front view of Fig. 9;
Figure 11 be in Fig. 9 D-D to sectional structure chart;
Figure 12 is E place partial enlarged drawing in Figure 10.
Detailed description of the invention
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearly understand, below in conjunction with structural principle, drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The noise that the present invention is directed to existing indoor air conditioner cabinet carries out by cabinet-type air conditioner after the measures such as sound absorption spiral case, inclination whirlpool tongue, change inlet and outlet the problem that noise reduction has reached a limit, propose a kind of new denoising structure carrying out out micropore or micro chink on the exhausting plate of indoor air conditioner cabinet spout member, certain depth air layer is left in exhausting plate side, also cavity is claimed, utilize sound wave to pass out-of-date air to rub back and forth in aperture sound energy consumption, and utilize the size of cavity to control the resonant frequency at peak, cavity is larger, and resonant frequency is lower.
Micropore orifice plate can regard the parallel connection of a large amount of microtubule (micropunch) as, each micropunch is a very thin short tube, pitch of holes more very large than aperture many time, can suppose that the characteristic in each hole is independent of each other, the acoustic impedance of microperforated panel equals the acoustic impedance of single hole simply divided by hole count, when sound wave is propagated in managing, impact particle vibration velocity vertically on tube wall of consideration viscosity is zero, vibration velocity is on center shaft maximum, velocity gradient is there is along radial direction in pipe, on the other hand, pitch of holes less than wavelength a lot of time, faced by orifice plate, sound wave reflection also can be ignored.
Referring to Fig. 1, is the principle schematic of microperforated panel soundabsorbing construction, the porose diameter d of major parameter of architectural characteristic, the dark h of orifice plate back cavity, orifice plate degree of depth t and punching rate p (by diameter d, pitch of holes b determines).
The acoustics person's character of microperforated panel soundabsorbing construction is its acoustic impedance, and which determine the acoustical behavior index of sound absorption structure in fact just, soundabsorbing construction as shown in Figure 1, its acoustic impedance Z is
Wherein: r is orifice plate specific acoustic resistance, and its value is:
λ is orifice plate specific acoustic reactance, and its value is:
In formula, ω is incident angular frequency, and c is the medium velocity of sound, and μ is the air coefficient of viscosity, and ρ is atmospheric density, and p is punching rate; K is medium wave number
The acoustic absorptivity α when the normal incidence of sound absorption structure
nfor
Acoustic absorptivity is the function of structural parameters and frequency, and for ad hoc structure, acoustic absorptivity changes with the change of frequency.When system resonance, acoustic reactance is zero, and acoustic absorptivity reaches maximum, and corresponding resonant frequency is f, and maximum acoustic absorptivity during resonance is:
When the non-normal incidence of microperforated panel soundabsorbing construction, i.e. sound wave and normal oblique incidence into θ angle, then acoustic absorptivity is now:
The acoustical behavior index of microperforated panel soundabsorbing construction generally represents by acoustic absorptivity, wide band sound absorption B and maximum sound absorption frequency f.Acoustic absorptivity is absorbed power and the ratio of incident power, wide band sound absorption is also the half-band width that relatively absorbs sound, namely, near maximum sound absorption frequency (being sometimes resonant frequency), acoustic absorptivity equals the difference of two frequencies of maximum acoustic absorptivity half and the ratio of maximum sound absorption frequency.Obviously, maximum acoustic absorptivity is the bigger the better, and wide band sound absorption is more wide better.The factor such as punching rate, cavity depth, aperture, thickness of slab all has a certain impact to the acoustic absorptivity of microperforated panel soundabsorbing construction and sound sucting band.
Indoor air conditioner cabinet denoising structure of the present invention has multiple embodiments, and its better detailed description of the invention is as follows:
Embodiment one
Refer to Fig. 2 to Fig. 8, the air outlet 10 that indoor air conditioner cabinet denoising structure provided by the invention comprises indoor machine housing 1 and is opened on indoor machine housing 1, be provided with the exhausting plate 2 that edge connects with the inwall of indoor machine housing 1 in indoor machine housing 1, be formed with the air-out passage 110 communicated with air outlet 10 at exhausting plate 2 near the side of air outlet 10; Exhausting plate 2 encloses in the side and indoor machine housing 1 that deviate from air outlet 10 and is formed with a cavity 120, and exhausting plate 2 is provided with multiple microperforated panel soundabsorbing construction.
In the present embodiment, microperforated panel soundabsorbing construction is the micropore 20 running through exhausting plate 2.Air-supply exit portion adopts working of plastics usually, outlet plastics exhausting plate 2 punches, micropore 20 diameter is 1mm ~ 2mm, the diameter of micropore 20 is less in theory, and have impact clearly to the maximum of acoustic absorptivity, acoustic absorptivity will be larger, frequency bandwidth can also be widened simultaneously, its acoustically effective is relative also better, but difficulty of processing is also larger, and processing cost also rises thereupon; If micropore 20 diameter is excessive, then acoustic absorptivity reduces, and causes noise reduction not obvious.The scope that the punching rate of micropore 20 and all micropores 20 gross area account for the ratio of the gross area of exhausting plate 2 is 1% ~ 5%, under certain condition, increases punching rate and resonant frequency can be made to increase, maximum acoustic absorptivity is also slightly increased; Micropore 20 square arrangement can be distributed on exhausting plate 2 and (refers to Fig. 7), also can be distributed on exhausting plate 2 with equilateral triangle arrangement and (refer to Fig. 8).
For square arrangement distribution, its punching rate computing formula is:
For equilateral triangle arrangement distribution, its punching rate computing formula is:
The cavity 120 at micropore 20 orifice plate and exhausting plate 2 rear portion leaves the air layer of certain degree of depth, be generally 5 ~ 20cm, cavity 120 degree of depth on rear side of orifice plate has the greatest impact to resonant frequency, the degree of depth of cavity 120 is larger, resonant frequency is lower, good with other parameters combination of orifice plate, maximum coffer can also be made slightly to increase, and wide band sound absorption increases to some extent.Meanwhile, exhausting plate 2 is designed to circular arc plate, the corner transition of the air-out passage 110 formed like this is mild, and be beneficial to airflow smooth and flow out, reduction air-flow and exhausting plate 2 rub and produce the possibility of noise greatly.
In a word, the degree of depth of punching rate, cavity 120, the factor such as aperture, thickness of slab of micropore all have a certain impact to the acoustic absorptivity of microperforated panel soundabsorbing construction and sound sucting band.Punching rate is preferably no more than 5%; When condition is allowed, the degree of depth of cavity 120 is large as far as possible; The aperture of micropore is then as well little as far as possible; Select thicker plate also can improve acoustic absorptivity, thickness of slab general control is in this scope of 0.2 ~ 5mm.The selection of these parameters according to actual conditions, will consider that various factors comprehensively determines.
Refer to Fig. 4 and Fig. 6, in the present embodiment, in cavity 120, sound-absorbing material layer 3 can also be set, sound-absorbing material layer 3 is preferably arranged on the madial wall of indoor machine housing 1, arranging on micropore 20 architecture basics like this, filling sucting sound material in the cavity 120 further on rear side of micropore orifice plate, not only can improve acoustic absorptivity, and also play function of heat insulation, prevent air-conditioning freeze time air-conditioner air outlet 10 with condensed water.
Embodiment two
Refer to Fig. 9 to Figure 12, difference in the present embodiment and embodiment one is that microperforated panel soundabsorbing construction is the micro chink 21 running through exhausting plate 2, the width of micro chink 21 is 1mm ~ 2mm, the scope that the punching rate of micro chink 21 and the gross area of all micro chinks 21 account for the ratio of the gross area of exhausting plate 2 is 1% ~ 5%, micro chink 21 can horizontal, longitudinal, oblique or intersect be opened on exhausting plate 2, but consideration ease of processing, generally makes consistent with drawing die direction.Compare with the micropore orifice plate in embodiment one, micro chink 21 orifice plate acoustically effective a little bit poorer a little (about 0.3dBA), but gap of cracking is simple due to manufacturing process at orifice plate, is convenient at engineering construction.Other structure of embodiment two is identical with embodiment one, repeats no more herein.
In actual enforcement, test for certain indoor air conditioner cabinet, semianechoic room indoor machine being placed band operating mode carries out noise contrast test, indoor machine is set to powerful shelves, ventilation state, two centrifugal wind wheel rotating speed is 700rpm, adopts B & K vibrating noise testing equipment to its gather and analysis.Before the invention process, indoor air conditioner cabinet A weighted sound pressure level value is 50.8dBA, and after the denoising structure adopting inventive embodiments two to provide, cabinet-type air conditioner noise figure is 46.8dBA, reduce about 4dBA, adopt denoising structure of the present invention can effectively reduce indoor air conditioner cabinet noise.
The present invention also provides a kind of indoor air conditioner cabinet (not shown).Indoor air conditioner cabinet comprises above-mentioned indoor air conditioner cabinet denoising structure.
The present invention also provides a kind of air-conditioner (not shown).The indoor set that air conditioning chamber's device comprises off-premises station and is connected with off-premises station, indoor set is above-mentioned indoor air conditioner cabinet.
Indoor air conditioner cabinet provided by the invention and air-conditioner, owing to have employed above-mentioned indoor air conditioner cabinet denoising structure, the noise of its indoor machine is effectively reduced, noise tonequality is improved, substantially increase the experience comfort level of air conditioner user, product cost is well controlled simultaneously, complete machine usefulness is promoted, its market competitiveness thus be enhanced.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. indoor air conditioner cabinet denoising structure, comprise indoor machine housing and be opened in the air outlet on described indoor machine housing, be provided with the exhausting plate that edge connects with the inwall of described indoor machine housing in described indoor machine housing, be formed with the air-out passage communicated with described air outlet at described exhausting plate near the side of described air outlet; It is characterized in that: described exhausting plate encloses in the side and described indoor machine housing that deviate from described air outlet and is formed with a cavity, and the degree of depth of described cavity is 5 ~ 20cm, and described exhausting plate is provided with multiple microperforated panel soundabsorbing construction.
2. indoor air conditioner cabinet denoising structure as claimed in claim 1, is characterized in that: described microperforated panel soundabsorbing construction is micropore or micro chink.
3. indoor air conditioner cabinet denoising structure as claimed in claim 2, is characterized in that: the aperture of described micropore is the width of 1 ~ 2mm or described micro chink is 1 ~ 2mm.
4. indoor air conditioner cabinet denoising structure as claimed in claim 3, is characterized in that: the punching rate of described micropore or described micro chink is 1% ~ 5%.
5. indoor air conditioner cabinet denoising structure as claimed in claim 4, is characterized in that: multiple described micropore is that square arrangement distribution or equilateral triangle arrangement are distributed on described exhausting plate.
6. indoor air conditioner cabinet denoising structure as claimed in claim 4, is characterized in that: described micro chink is laterally distributed or in genesis analysis or in diagonally distributing or being arranged on described exhausting plate in cross-distribution.
7. indoor air conditioner cabinet denoising structure as claimed in claim 1, is characterized in that: be also provided with sound-absorbing material layer in described cavity.
8. indoor air conditioner cabinet denoising structure as claimed in claim 7, is characterized in that: described sound-absorbing material layer is arranged on the madial wall of described indoor machine housing.
9. indoor air conditioner cabinet denoising structure as claimed in claim 1, is characterized in that: the thickness of described exhausting plate is 0.2 ~ 5mm.
10. indoor air conditioner cabinet denoising structure as claimed in claim 1, is characterized in that: described exhausting plate is circular arc plate.
11. indoor air conditioner cabinets, is characterized in that: comprise the indoor air conditioner cabinet denoising structure described in any one of claim 1 to 10.
12. air-conditioners, the indoor set comprising off-premises station and be connected with described off-premises station, is characterized in that: described indoor set is indoor air conditioner cabinet according to claim 11.
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| CN201310146262.4A CN103383140B (en) | 2012-05-04 | 2013-04-24 | Indoor air conditioner cabinet denoising structure, indoor air conditioner cabinet and air-conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101384442A CN102721164A (en) | 2012-05-04 | 2012-05-04 | Control device for reducing noise of indoor cabinet of air conditioner |
| CN2012101384442 | 2012-05-04 | ||
| CN201210138444.2 | 2012-05-04 | ||
| CN201310146262.4A CN103383140B (en) | 2012-05-04 | 2013-04-24 | Indoor air conditioner cabinet denoising structure, indoor air conditioner cabinet and air-conditioner |
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| CN103383140A CN103383140A (en) | 2013-11-06 |
| CN103383140B true CN103383140B (en) | 2016-04-06 |
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| CN2012101384442A Pending CN102721164A (en) | 2012-05-04 | 2012-05-04 | Control device for reducing noise of indoor cabinet of air conditioner |
| CN201310146262.4A Active CN103383140B (en) | 2012-05-04 | 2013-04-24 | Indoor air conditioner cabinet denoising structure, indoor air conditioner cabinet and air-conditioner |
| CN 201320214783 Withdrawn - After Issue CN203274204U (en) | 2012-05-04 | 2013-04-24 | Noise reduction structure of air conditioner indoor cabinet, air conditioner indoor cabinet and air conditioner |
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| CN102721164A (en) * | 2012-05-04 | 2012-10-10 | 美的集团有限公司 | Control device for reducing noise of indoor cabinet of air conditioner |
| CN103358856A (en) * | 2013-07-10 | 2013-10-23 | 奇瑞汽车股份有限公司 | Sound-absorption dust shield for passenger vehicle scavenge port |
| CN104422109B (en) * | 2013-08-26 | 2018-02-06 | 广东美的暖通设备有限公司 | For air-conditioning silencer and there is its air-conditioning |
| CN105423660B (en) * | 2014-09-15 | 2019-01-01 | 上海海立电器有限公司 | A kind of compressor liquid storage device |
| CN105444387B (en) * | 2015-12-29 | 2018-06-19 | 美的集团武汉制冷设备有限公司 | Outlet air adjustable plate and air conditioner indoor unit |
| CN105444386B (en) * | 2015-12-29 | 2018-07-03 | 美的集团武汉制冷设备有限公司 | The production method of outlet air adjustable plate, air conditioner indoor unit and outlet air adjustable plate |
| CN105823133B (en) * | 2016-05-31 | 2018-11-09 | 广东美的制冷设备有限公司 | Cabinet air-conditioner |
| CN105928077B (en) * | 2016-06-17 | 2019-08-16 | 美的集团武汉制冷设备有限公司 | Air conditioner indoor unit and air conditioner |
| CN105928169A (en) * | 2016-06-21 | 2016-09-07 | 珠海格力电器股份有限公司 | Air outlet device and indoor vertical type air conditioner provided with same |
| CN106122103A (en) * | 2016-08-24 | 2016-11-16 | 珠海格力电器股份有限公司 | Air-conditioner, cross flow fan and worm frame thereof |
| KR102600956B1 (en) * | 2016-09-22 | 2023-11-13 | 삼성전자주식회사 | Air Conditioner |
| CN106403221A (en) * | 2016-11-22 | 2017-02-15 | 广东美的暖通设备有限公司 | Perforating air guide ring, outdoor unit of air conditioner and air conditioner |
| CN107687700A (en) * | 2017-09-18 | 2018-02-13 | 珠海格力电器股份有限公司 | Wind outlet panel structure and there is its air conditioner |
| CN108709302B (en) * | 2018-04-13 | 2020-07-14 | 宁波清智环保科技有限公司 | Environment-friendly noise silencer |
| CN109388886B (en) * | 2018-10-09 | 2022-10-28 | 山东理工大学 | Method for calculating sound absorption coefficient of porous material |
| CN111189106A (en) * | 2020-03-03 | 2020-05-22 | 青岛海尔空调器有限总公司 | Active noise reduction air conditioner and control method thereof |
| CN112484272B (en) * | 2020-11-30 | 2022-03-11 | 珠海格力电器股份有限公司 | Air conditioner control method and device and air conditioning unit |
| CN112628517B (en) * | 2020-12-11 | 2023-06-02 | 南京光声超构材料研究院有限公司 | Pipeline muffler, device and preparation method |
| CN112648724A (en) * | 2020-12-28 | 2021-04-13 | 江苏科技大学 | Condensate water recovery device of wall-mounted air conditioner indoor unit |
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| CN1556147A (en) * | 2004-01-06 | 2004-12-22 | 刘永丰 | Controllable biodegradable plastic mother materal |
| CN201606610U (en) * | 2009-09-23 | 2010-10-13 | 北京绿创声学工程股份有限公司 | Muffling elbow of ultra-micro pore plate |
| CN201582959U (en) * | 2009-12-23 | 2010-09-15 | 中国舰船研究设计中心 | Ventilating muffler |
| CN201606994U (en) * | 2010-01-27 | 2010-10-13 | 任小平 | Muffling air duct |
| CN201838309U (en) * | 2010-08-18 | 2011-05-18 | 中国人民解放军96550部队 | Microfracture plate muffler |
| CN203274204U (en) * | 2012-05-04 | 2013-11-06 | 美的集团股份有限公司 | Noise reduction structure of air conditioner indoor cabinet, air conditioner indoor cabinet and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103383140A (en) | 2013-11-06 |
| CN102721164A (en) | 2012-10-10 |
| CN203274204U (en) | 2013-11-06 |
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