CN203454371U - Low-noise air conditioner indoor cabinet unit - Google Patents
Low-noise air conditioner indoor cabinet unit Download PDFInfo
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- CN203454371U CN203454371U CN201320533933.8U CN201320533933U CN203454371U CN 203454371 U CN203454371 U CN 203454371U CN 201320533933 U CN201320533933 U CN 201320533933U CN 203454371 U CN203454371 U CN 203454371U
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Abstract
The utility model provides a low-noise air conditioner indoor cabinet unit. The indoor cabinet unit comprises a volute which is provided with an air inlet, an air outlet and an air flow channel flowing from the air inlet to the air outlet, the volute comprises a volute tongue and a baffle wall located outside the air flow channel, a closed cavity is formed between the volute tongue and the baffle wall, a plurality of micro hole structures are formed in the volute tongue and communicated with the closed cavity, the porosity of the micro hole structures is 1-5%, and the micro hole structures are micro pores or micro cracks formed in the volute tongue. The micro hole structures are resonant sound absorption structures which are low in sound quality, high in sound resistance, simple in structure and easy to process, have the advantages of being high in sound absorption coefficient and wide in sound absorption frequency and can effectively reduce exhausted air flow noise in the air conditioner indoor cabinet unit, so that the problems that in the prior art, the technology that inlet air flow noise is reduced by adjusting the structure of a fan or the installing mode of a motor is difficult to achieve and not universal are solved.
Description
Technical field
The utility model belongs to air-conditioning manufacturing technology field, relates in particular to a kind of low-noise air conditioner indoor machine.
Background technology
Indoor cabinet machine of air conditioner has obtained using widely in family, working environment.The noise that indoor machine produces is comprised of pneumatic noise and mechanical noise two parts, and wherein, pneumatic noise is far longer than mechanical noise.Pneumatic noise mainly contains inlet noise, wind wheel noise (comprising rotational noise and vortex noise), evaporimeter noise and exhaust outlet noise.
The ducting system of traditional indoor cabinet machine of air conditioner is comprised of centrifugal blower, and air-flow enters through the air inlet of panel both sides, through the centrifugal wind wheel of centrifugal blower, does work and turns to the spiral case that flows to centrifugal blower after 90 degree, finally by pervaporation device, from air outlet, flows out.In order to keep the air circulation of indoor machine, do not reduce its performance, must make blower fan keep certain rotating speed, this has just increased the difficulty of noise reduction.
For this reason, many air-conditioning producers and research unit improve this, and many solutions have been proposed, Chinese patent notification number CN2495946Y for example, it discloses a kind of fan driving structure that reduces indoor cabinet machine of air conditioner draft noise, and it is by adjusting the structure of fan and the mounting means of motor, thereby under the prerequisite not subtracting at air circulation and heat exchange efficiency thereof, reduce charge air flow noise, but this technology in practical application engineering because operation easier is large, be difficult to realize.
Utility model content
The object of the utility model embodiment is to provide a kind of low-noise air conditioner indoor machine, is intended to solve the employing that exists in prior art and adjusts the structure of fan and the mounting means of motor and reduce technology that charge air flow noise brings and realize large and the problem that cannot be general of difficulty.
The utility model embodiment realizes like this, a kind of low-noise air conditioner indoor machine, it comprises spiral case, described spiral case has air inlet and air outlet, described low-noise air conditioner indoor machine also comprises that the described air inlet being arranged in described spiral case sentences the centrifugal blower that air-flow is sucked and discharged by described air outlet place by described air inlet place, described spiral case has the gas channel that is flow to described air outlet by described air inlet, described spiral case comprises snail tongue and is positioned at the retaining wall outside described gas channel, between described retaining wall and described snail tongue, form closed cavity, described snail tongue offers the some micro-hole structure being communicated with described closed cavity, the porosity of offering described micro-hole structure on described snail tongue is 1%～5%.
Further, described micro-hole structure is the micropore being opened on described snail tongue, and some described micropores are square or Triangular array.
Particularly, described in each, the diameter range of micropore is 0.5mm～2mm.
Particularly, described in each axially bored line of micropore perpendicular to described retaining wall.
Further, described micro-hole structure is the micro chink being opened on described snail tongue, and described in each, micro chink longitudinally arranges.
Further, described micro-hole structure is the micro chink being opened on described snail tongue, and described in each, micro chink is horizontal or arranged in a crossed manner.
Particularly, described in each, the width range of micro chink is 0.5mm～2mm.
The thickness of the described closed cavity forming between described snail tongue and described retaining wall further, is 5mm～20mm.
The cross section of the described closed cavity forming between described retaining wall and described snail tongue further, is triangle.
Further, the medial surface of the described retaining wall absorbent treatment that has been sticked, described absorbent treatment is positioned at described closed cavity.
Micro-hole structure of above-mentioned low-noise air conditioner indoor machine is the resonance sound-absorbing structure of a kind of matter in a low voice, 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, there is acoustic absorptivity height and the wide feature of sound absorption frequency, can effectively reduce indoor cabinet machine of air conditioner exhaust airstream noise.Simple and reasonable, the easy processing in micro-hole of above-mentioned low-noise air conditioner indoor machine, applied widely, highly versatile and can effectively reduce noise.
Accompanying drawing explanation
Fig. 1 is the perspective exploded view of the low-noise air conditioner indoor machine that provides of the utility model the first embodiment.
Fig. 2 is the schematic perspective view of spiral case of the low-noise air conditioner indoor machine of Fig. 1.
Fig. 3 is the enlarged drawing at circle A place of spiral case of the low-noise air conditioner indoor machine of Fig. 2.
Fig. 4 is the longitudinal cross-sectional schematic after the low-noise air conditioner indoor machine of Fig. 1 is assembled.
Fig. 5 is the enlarged diagram of circled B of the low-noise air conditioner indoor machine of Fig. 4.
Fig. 6 is the schematic perspective view of the spiral case of the low-noise air conditioner indoor machine that provides of the utility model the second embodiment.
Fig. 7 is the enlarged drawing at circle C place of the low-noise air conditioner indoor machine of Fig. 6.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The first embodiment:
Please refer to Fig. 1 to Fig. 3, the low-noise air conditioner indoor machine that the utility model the first embodiment provides comprises spiral case 20, described spiral case 20 has air inlet 21 and air outlet 22, described low-noise air conditioner indoor machine also comprises that the described air inlet 21 being arranged in described spiral case 20 sentences the centrifugal blower 10 that air-flow is sucked and discharged by described air outlet 22 places by described air inlet 21 places, refer to Fig. 4, described spiral case 20 has the gas channel 201 that is flow to described air outlet 22 by described air inlet 21.
Please refer to Fig. 4 and Fig. 5, described spiral case 20 comprises snail tongue 23 and is positioned at the retaining wall 24 outside described gas channel 201.Between described retaining wall 24 and described snail tongue 23, form closed cavity 25.Described snail tongue 23 offers the some micro-hole structure 230 being communicated with described closed cavity 25, and the porosity of offering described micro-hole structure 230 on described snail tongue 23 is 3%～5%, and described porosity refers to that perforated area accounts for the long-pending ratio of whirlpool lingual surface.
By offer micro-hole structure 230 on snail tongue 23, air-flow is entered in closed cavity 25 by micro-hole structure 230, air-flow is played to sound absorption, micro-hole structure 230 forms the resonance sound-absorbing structure of matter, high acoustic resistance in a low voice with closed cavity 25 combinations, 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, there is acoustic absorptivity height and the wide feature of sound absorption frequency, can effectively reduce indoor cabinet machine of air conditioner exhaust airstream noise.Micro-hole structure 230 advantages of simple of above-mentioned low-noise air conditioner indoor machine, easily processing, applied widely, highly versatile and can effectively reduce noise.
Described spiral case 20 integral body can become class " R " shape.Described snail tongue 23 comprises another flanging 232 near a flanging 231 of air inlet 21 and close air outlet 22.The structure that forms outwardly convex between two flangings 231,232, micro-hole structure 230 is formed in this protruding structure.
The cross section of described closed cavity 25 is triangle, and according to triangle Force principle, triangle stability under loading, can guarantee the intensity of described closed cavity, thereby guarantees that the wind speed of the described closed cavity of turnover is even.
Please again consult Fig. 1, described centrifugal blower 10 comprises motor 11 and wind wheel 12.After assembling, this centrifugal blower 10 is arranged at air inlet 21 places of spiral case 20.
As shown in Fig. 2～3, described micro-hole structure 230 is for to be opened in the micropore 233a on described snail tongue 23, and described in each, the diameter range of micropore 233a is 0.5mm～2mm, and described micropore 233a is less, and soundproof effect is better.Described in each, the axially bored line of micropore 233a, perpendicular to described retaining wall 24, is beneficial to and makes more air-flow enter into described closed cavity by described micropore 233a.Some described micropore 233a are square or Triangular array.
The operation principle of described low-noise air conditioner indoor machine is as follows: the motor 11 of centrifugal blower 10 drives centrifugal wind wheel 12 to rotate, air-flow is entered by described air inlet 21, through centrifugal wind wheel 12, do work and change the air outlet 22 that flows to spiral case 20 after turning to 90 degree, air-flow is in flow process, air-flow enters closed cavity 25 from the micropore 233a being located at snail tongue 23, and then flow out through micropore 233a from closed cavity 25, finally from air outlet 22, flow out.Air flows to closed cavity 25 from micropore 233a, from closed cavity 25 to micropore 233a, flow out again, one-in-and-one-out like this, the air sound energy consumption that rubs back and forth in described micropore 233a, and the size of utilizing closed cavity 25 reduces the resonant frequency of the system that air-flow and described spiral case 20 form, thereby reach the effect that reduces noise.Closed cavity 25 is larger, and the resonant frequency of the system that air-flow and described spiral case 20 forms is lower, and the thickness of closed cavity 25 reduces noise result the best while being 5mm～20mm.
As shown in Figure 5, in order to strengthen acoustically effective, as described in the medial surface of retaining wall 24 absorbent treatment 26 that has been sticked, described absorbent treatment 26 is positioned at described closed cavity 25.
In the present embodiment, the whole one-tenth class " R " of described spiral case 20 shape is a kind of enforceable mode.In other embodiments, the concrete shape of described spiral case 20 is as long as meet the real requirement that described centrifugal blower 10 can be set.
The second embodiment:
As shown in Figure 6, Figure 7, the low-noise air conditioner indoor machine that the low-noise air conditioner indoor machine that the utility model the second embodiment provides and the first embodiment provide is roughly the same, different from the first embodiment: by described micro-hole structure 230b, be that micropore 233a makes into as micro chink 3b.
Described in each, the width range of micro chink 3b is 0.5mm～2mm, and the action effect that is 0.5mm～2mm with the diameter range of micropore 233a described in each of the first embodiment is identical.In a second embodiment, described in each, micro chink 3b can be longitudinal setting, horizontally set or arranged in a crossed manner, but in order to consider process consistency, generally makes and draw mill direction consistent.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a low-noise air conditioner indoor machine, it comprises spiral case, described spiral case has air inlet and air outlet, described low-noise air conditioner indoor machine also comprises that the described air inlet being arranged in described spiral case sentences the centrifugal blower that air-flow is sucked and discharged by described air outlet place by described air inlet place, described spiral case has the gas channel that is flow to described air outlet by described air inlet, it is characterized in that: described spiral case comprises snail tongue and is positioned at the retaining wall outside described gas channel, between described retaining wall and described snail tongue, form closed cavity, described snail tongue offers the some micro-hole structure being communicated with described closed cavity, the porosity of offering described micro-hole structure on described snail tongue is 1%～5%.
2. low-noise air conditioner indoor machine as claimed in claim 1, is characterized in that: described micro-hole structure is the micropore being opened on described snail tongue, and some described micropores are square or Triangular array.
3. low-noise air conditioner indoor machine as claimed in claim 2, is characterized in that: described in each, the diameter range of micropore is 0.5mm～2mm.
4. low-noise air conditioner indoor machine as claimed in claim 2, is characterized in that: described in each, the axially bored line of micropore is perpendicular to described retaining wall.
5. low-noise air conditioner indoor machine as claimed in claim 1, is characterized in that: described micro-hole structure is the micro chink being opened on described snail tongue, and described in each, micro chink longitudinally arranges.
6. low-noise air conditioner indoor machine as claimed in claim 1, is characterized in that: described micro-hole structure is the micro chink being opened on described snail tongue, and described in each, micro chink is horizontal or arranged in a crossed manner.
7. the low-noise air conditioner indoor machine as described in claim 5 or 6, is characterized in that: described in each, the width range of micro chink is 0.5mm～2mm.
8. the low-noise air conditioner indoor machine as described in claim 1-6 any one, is characterized in that: the thickness of the described closed cavity forming between described snail tongue and described retaining wall is 5mm～20mm.
9. the low-noise air conditioner indoor machine as described in claim 1-6 any one, is characterized in that: the cross section of the described closed cavity forming between described retaining wall and described snail tongue is triangle.
10. the low-noise air conditioner indoor machine as described in claim 1-6 any one, is characterized in that: the medial surface of the described retaining wall absorbent treatment that has been sticked, described absorbent treatment is positioned at described closed cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533933.8U CN203454371U (en) | 2013-08-29 | 2013-08-29 | Low-noise air conditioner indoor cabinet unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533933.8U CN203454371U (en) | 2013-08-29 | 2013-08-29 | Low-noise air conditioner indoor cabinet unit |
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| CN203454371U true CN203454371U (en) | 2014-02-26 |
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| CN201320533933.8U Expired - Lifetime CN203454371U (en) | 2013-08-29 | 2013-08-29 | Low-noise air conditioner indoor cabinet unit |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835997A (en) * | 2014-03-06 | 2014-06-04 | 珠海格力电器股份有限公司 | Air conditioner indoor unit and volute thereof |
| CN104314874A (en) * | 2014-10-16 | 2015-01-28 | 珠海格力电器股份有限公司 | Volute and fan comprising same |
| CN104807095A (en) * | 2015-05-08 | 2015-07-29 | 珠海格力电器股份有限公司 | Air conditioner |
| CN105526193A (en) * | 2016-02-29 | 2016-04-27 | 宁波方太厨具有限公司 | Blower volute for extractor hoods |
| CN106593961A (en) * | 2017-01-03 | 2017-04-26 | 奥克斯空调股份有限公司 | Silencer and air conditioner with same |
| CN106907351A (en) * | 2017-04-26 | 2017-06-30 | 广东美的制冷设备有限公司 | Spiral case, blower fan and air-conditioner |
| CN106907773A (en) * | 2017-03-22 | 2017-06-30 | 广东美的制冷设备有限公司 | Snail tongue, air channel structure and air-conditioner |
| CN107101353A (en) * | 2017-05-27 | 2017-08-29 | 远大洁净空气科技有限公司 | A kind of new blower fan of low noise |
| CN107289605A (en) * | 2017-07-31 | 2017-10-24 | 广东美的制冷设备有限公司 | Snail tongue, spiral case, cross flow fan and indoor apparatus of air conditioner |
| CN107355397A (en) * | 2017-07-10 | 2017-11-17 | 加丁（天津）科技有限公司 | A kind of low noise centrifugal fan, air cleaning unit for being provided with noise-reducing acoustic liner |
| CN107965896A (en) * | 2017-12-26 | 2018-04-27 | 海信（广东）空调有限公司 | Volute tongue, air duct device and air conditioner indoor unit |
| CN110211560A (en) * | 2019-05-31 | 2019-09-06 | 广东美的制冷设备有限公司 | Resonance sound-absorbing structure and air-conditioning draught fan component |
| CN111795006A (en) * | 2020-07-17 | 2020-10-20 | 广东美的白色家电技术创新中心有限公司 | Volute assembly and centrifugal fan |
| CN115217795A (en) * | 2022-08-19 | 2022-10-21 | 上海理工大学 | Centrifugal fan with micro-perforated noise elimination volute tongue |
| WO2023103121A1 (en) * | 2021-12-08 | 2023-06-15 | Tcl空调器(中山)有限公司 | Volute casing, air passage assembly, and air conditioner |
-
2013
- 2013-08-29 CN CN201320533933.8U patent/CN203454371U/en not_active Expired - Lifetime
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835997A (en) * | 2014-03-06 | 2014-06-04 | 珠海格力电器股份有限公司 | Air conditioner indoor unit and volute thereof |
| CN103835997B (en) * | 2014-03-06 | 2017-05-03 | 珠海格力电器股份有限公司 | Air conditioner indoor unit and volute thereof |
| CN104314874A (en) * | 2014-10-16 | 2015-01-28 | 珠海格力电器股份有限公司 | Volute and fan comprising same |
| CN104807095A (en) * | 2015-05-08 | 2015-07-29 | 珠海格力电器股份有限公司 | Air conditioner |
| WO2016180250A1 (en) * | 2015-05-08 | 2016-11-17 | 珠海格力电器股份有限公司 | Air conditioner |
| CN104807095B (en) * | 2015-05-08 | 2020-02-21 | 珠海格力电器股份有限公司 | Air conditioner |
| CN105526193B (en) * | 2016-02-29 | 2019-02-26 | 宁波方太厨具有限公司 | A kind of volute of blower for range hood |
| CN105526193A (en) * | 2016-02-29 | 2016-04-27 | 宁波方太厨具有限公司 | Blower volute for extractor hoods |
| CN106593961A (en) * | 2017-01-03 | 2017-04-26 | 奥克斯空调股份有限公司 | Silencer and air conditioner with same |
| CN106907773A (en) * | 2017-03-22 | 2017-06-30 | 广东美的制冷设备有限公司 | Snail tongue, air channel structure and air-conditioner |
| CN106907351A (en) * | 2017-04-26 | 2017-06-30 | 广东美的制冷设备有限公司 | Spiral case, blower fan and air-conditioner |
| CN107101353B (en) * | 2017-05-27 | 2022-08-26 | 远大洁净空气科技有限公司 | New fan of low noise |
| CN107101353A (en) * | 2017-05-27 | 2017-08-29 | 远大洁净空气科技有限公司 | A kind of new blower fan of low noise |
| CN107355397A (en) * | 2017-07-10 | 2017-11-17 | 加丁（天津）科技有限公司 | A kind of low noise centrifugal fan, air cleaning unit for being provided with noise-reducing acoustic liner |
| CN107355397B (en) * | 2017-07-10 | 2024-05-31 | 三羊(北京)文化有限公司 | A low-noise centrifugal fan and air purification device equipped with a noise reduction lining |
| CN107289605A (en) * | 2017-07-31 | 2017-10-24 | 广东美的制冷设备有限公司 | Snail tongue, spiral case, cross flow fan and indoor apparatus of air conditioner |
| CN107289605B (en) * | 2017-07-31 | 2023-09-26 | 广东美的制冷设备有限公司 | Volute tongue, volute, cross-flow fan and air conditioner indoor unit |
| CN107965896A (en) * | 2017-12-26 | 2018-04-27 | 海信（广东）空调有限公司 | Volute tongue, air duct device and air conditioner indoor unit |
| CN110211560A (en) * | 2019-05-31 | 2019-09-06 | 广东美的制冷设备有限公司 | Resonance sound-absorbing structure and air-conditioning draught fan component |
| CN110211560B (en) * | 2019-05-31 | 2022-02-08 | 广东美的制冷设备有限公司 | Resonance sound absorption structure and air conditioner fan subassembly |
| CN111795006A (en) * | 2020-07-17 | 2020-10-20 | 广东美的白色家电技术创新中心有限公司 | Volute assembly and centrifugal fan |
| WO2023103121A1 (en) * | 2021-12-08 | 2023-06-15 | Tcl空调器(中山)有限公司 | Volute casing, air passage assembly, and air conditioner |
| CN115217795A (en) * | 2022-08-19 | 2022-10-21 | 上海理工大学 | Centrifugal fan with micro-perforated noise elimination volute tongue |
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Granted publication date: 20140226 |