CN103835999A - Centrifugal volute and air conditioner indoor unit with same - Google Patents
Centrifugal volute and air conditioner indoor unit with same Download PDFInfo
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- CN103835999A CN103835999A CN201410050441.2A CN201410050441A CN103835999A CN 103835999 A CN103835999 A CN 103835999A CN 201410050441 A CN201410050441 A CN 201410050441A CN 103835999 A CN103835999 A CN 103835999A
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- bloop
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- 238000012360 testing method Methods 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
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- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
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- 238000002474 experimental method Methods 0.000 description 1
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Abstract
The invention provides a centrifugal volute, which comprises a front wall plate (1) and side wall plates, wherein the side wall plates comprise a first side wall plate (3) and a second side wall plate (4), the first side wall plate (3) comprises a volute tongue (33), an upper side wall plate (31) connected with the volute tongue (33) and a lower side wall plate (32) connected with the volute tongue (33), and the lower side wall plate (32) is connected with the second side wall plate (4).
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of anticentripetal spiral casing and there is its indoor apparatus of air conditioner.
Background technique
The noise of air conditioner indoor machine mainly results from ducting system, and indoor apparatus of air conditioner adopts centrifugal blower air-supply conventionally, has a noise peak not changing with wheel speed, on noise spectrum, in different rotating speeds situation, there will be noise peak at same frequency band, have a strong impact on tonequality.Therefore, how to reduce the noise peak of centrifugal blower, be the technical problem that those skilled in the art pay close attention to always.Publication number is that the patent document of CN102758798A discloses a kind of kitchen ventilator anticentripetal spiral casing, on the snail tongue on spiral case and the spiral case wall that is connected with snail tongue, is provided with bloop, reduces in this way noise.Inventor attempts identical bloop is set on the anticentripetal spiral casing of indoor apparatus of air conditioner centrifugal blower, and through overtesting, although find that noise total value decreases, bloop can leak out, and reduces blast pressure, cannot meet the requirement of the large air output of indoor apparatus of air conditioner.Moreover, this spiral case of opening bloop also cannot reduce noise peak, and this spiral case is compared with common spiral case, and maximum noise is worth less than effectively reducing.
Summary of the invention
The present invention aims to provide a kind of anticentripetal spiral casing and has its indoor apparatus of air conditioner, to reduce the noise peak of anticentripetal spiral casing and indoor apparatus of air conditioner, to reach the effect of improving tonequality, also can ensure air quantity simultaneously.
To achieve these goals, according to an aspect of the present invention, a kind of anticentripetal spiral casing, comprise front panel and side panel, side panel comprises the first side wall plate and the second side panel, the first side wall plate comprises snail tongue, the upside wallboard being connected with snail tongue and the downside wallboard being connected with snail tongue, described downside wallboard is connected with described the second side panel, it is characterized in that, on described downside wallboard, offer the first bloop, and be provided with in described downside wallboard outside the first anechoic chamber being communicated with described the first bloop.
Further, on described downside wallboard from starting to offer the first bloop with the joint of described snail tongue, and being provided with in described downside wallboard outside the first anechoic chamber being communicated with described the first bloop, the head and the tail two-end-point of the orthographic projection of the part that described downside wallboard is provided with the first bloop and the first anechoic chamber in described front panel is 10 degree to 90 degree with the scope of the included angle A of the line of the center of circle O of spiral case intake grill respectively.
Further, in described the first anechoic chamber, be provided with multiple dividing plates, described divider upright, in the tangent line of described downside wallboard, is divided into multiple independently anechoic chambers by the first anechoic chamber.
Further, on described upside wallboard, offer the second bloop, and be provided with in described upside wallboard outside the second anechoic chamber being communicated with described the second bloop.
Further, on described upside wallboard, from starting to offer the second bloop with the joint of described snail tongue, and be provided with in described upside wallboard outside the second anechoic chamber being communicated with described the second bloop.
Further, in described the second anechoic chamber, be provided with multiple dividing plates, described divider upright, in described upside wallboard, is divided into multiple independently anechoic chambers by the second anechoic chamber.
Further, described the first bloop and the second bloop are uniformly distributed, and the punching rate of the first bloop or the second bloop is 0.5%-3%.
Further, the aperture of described the first bloop or the second bloop is 1-3mm.
Further, the degree of depth of described the first anechoic chamber or the second anechoic chamber is 10-80mm.
Further, described the first bloop and the second bloop are uniformly distributed, the punching rate of described the first bloop or the second bloop (16) is 0.5%-3%, and the aperture of described the first bloop or the second bloop is 1-3mm, and the degree of depth of described the first anechoic chamber or the second anechoic chamber is 10-80mm.
According to a further aspect in the invention, a kind of indoor apparatus of air conditioner, comprises anticentripetal spiral casing, it is characterized in that, described anticentripetal spiral casing is the anticentripetal spiral casing as described in above-mentioned any one.
Apply technological scheme of the present invention, due to the first bloop and the first anechoic chamber are arranged on to described downside wallboard, in first anechoic chamber in downside wallboard outside, airstream vibration frequency is consistent with the noise peak frequency of air-flow in spiral case like this, cause air-flow in the first noise reduction indoor air flow and spiral case to resonate, friction dissipation effect when air-flow passes through the first bloop back and forth strengthens, consume more acoustic energy, can effectively reduce the noise peak of anticentripetal spiral casing, reach the effect of improving tonequality, also can ensure air quantity simultaneously.
Brief description of the drawings
The Figure of description that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic perspective view in the anticentripetal spiral casing front according to the present invention;
Fig. 2 is the schematic perspective view at the anticentripetal spiral casing back side according to the present invention;
Fig. 3 is the perspective view in the anticentripetal spiral casing front according to the present invention;
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the present invention can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Shown in figure 1-3, anticentripetal spiral casing of the present invention comprises front panel 1 and side panel, in front panel 1, offer intake grill 11, the upper end portion of spiral case is provided with exhaust outlet 2, side panel comprises the first side wall plate 3 and the second side panel 4, the division of the first side wall plate 3 and the second side panel 4 as shown in Figure 3, taking spiral case modes of emplacement in Fig. 3 as benchmark, if the center of circle of intake grill 11 is O, and cross O point and make vertical curve OL, vertical curve OL left side is the first side wall plate 3, the right side of vertical curve is the second side panel 4, the first side wall plate 3 comprises snail tongue 33, the upside wallboard 31 being connected with snail tongue 33 and the downside wallboard 32 being connected with snail tongue 33.
Inventor is through long-term research and repetition test, although find that offering bloop at described downside wallboard 32 can reduce noise total value, but can there is higher noise peak, because gas is while passing through from the bloop of spiral case inside, make acoustic energy be converted into heat energy and reduce noise with the rubbing action of bloop, but can produce the sound wave that frequency is consistent with spiral case bloop sound absorbent resonant frequency, form larger noise peak.For a change this sound wave frequency, inventor is by offer the first bloop 6 on described downside wallboard 32, and is provided with the first anechoic chamber 5 being communicated with described the first bloop 6 in described downside wallboard 32 outsides.The first bloop 6 coordinates with the first anechoic chamber 5, when air-flow passes through the first bloop 6, rub with the first bloop 6, acoustic energy is converted into heat energy, effectively reduce noise, the first interior airstream vibration frequency in anechoic chamber 5 is consistent with the noise peak frequency of air-flow in spiral case, cause like this air-flow in the first interior air-flow in anechoic chamber 5 and spiral case to resonate, friction dissipation effect when air-flow passes through the first bloop 6 back and forth strengthens, consume more acoustic energy, the noise peak that can effectively reduce anticentripetal spiral casing, reaches the effect of improving tonequality, also can ensure air quantity simultaneously.Inventor finds after long-term research and repetition test, because of the structure of spiral case special, the stream pressure difference that side panel is subject to everywhere, on the first side wall plate 3 and the second side panel 4, bloop and anechoic chamber are all set, although also can reach identical effect, but because there is pressure difference in anechoic chamber, the Speed Reduction of gas communication obtains large not, its generation sound wave frequency and resonant frequency are more approaching, than being easier to produce resonance, there is larger noise peak in occasional, and gas passes through bloop at a relatively high speed, also can generating portion noise, noise reduction is obvious not, therefore, in order to reduce further noise peak, improve noise reduction, as further improved technical scheme of the present invention, for reducing the pressure difference of 5 inside, the first anechoic chamber, reduce gas in first anechoic chamber's 5 inner flow velocity, the first bloop 6 and the first anechoic chamber 5 are arranged on described downside wallboard 32 by the present invention, diminish in first anechoic chamber's 5 internal pressure differences in downside wallboard 32 outsides like this, gas flow resistance increases, further reduce gas by the speed of the first bloop 6, thereby obtain better reduction noise and avoid the effect resonating.
Further, inventor by described downside wallboard 32 from starting to offer the first bloop 6 with the joint of described snail tongue 33, and being provided with the first anechoic chamber 5 being communicated with described the first bloop 6 in described downside wallboard 32 outsides, the head and the tail two-end-point of the orthographic projection of the part that described downside wallboard 32 is provided with the first bloop 6 and the first anechoic chamber 5 in described front panel 1 is 10 degree to 90 degree with the scope of the included angle A of the line of the center of circle O of spiral case intake grill 11 respectively.Impact maximum because this part of downside wallboard is subject to gas, the first bloop 6 and the first anechoic chamber 5 are set in this section, can consume most effectively gas impact energy, reduce vibrating noise, and effectively suppress resonance.Above-mentioned bloop and the anechoic chamber of arranging on a large scale that compare, simplified manufacturing technique, saves material, reduces costs, and has also further reduced the pressure difference of anechoic chamber's internal gas.
Further, on described downside wallboard 32, offer the first bloop 6, and be provided with in described downside wallboard 32 outsides on the basis of scheme of the first anechoic chamber 5 being communicated with described the first bloop 6, the present invention from starting to offer the second bloop 16 with the joint of described snail tongue 33, and is provided with in described upside wallboard 31 outsides the second anechoic chamber 15 being communicated with described the second bloop 16 on described upside wallboard 31.In indoor apparatus of air conditioner, anticentripetal spiral casing exhaust outlet 2 tops are provided with heat exchanger, the air of sending from anticentripetal spiral casing is stopped at exhaust outlet 2, gas flow resistance increases, and easily forms eddy current at spiral case to outlet port, and the upside wallboard 31 being connected with snail tongue 33 is formed and impacted, particularly described upside wallboard 32 parts are leaning structure, lifting surface area is large, is more prone to vibrate, and produces noise.Be provided with the second bloop 16 and the second anechoic chamber 15 here, air-flow can pass in and out the second anechoic chamber 15 from the second bloop 16, reduces eddy current herein, reduces eddy current crack, avoids producing resonance.
In order further to reduce the pressure difference of inside, anechoic chamber, as further improved technical scheme of the present invention, in the first anechoic chamber 5, be provided with dividing plate (not shown), the tangent line of dividing plate and described downside wallboard 32 is perpendicular, and the first anechoic chamber is divided into at least two independently anechoic chambers.In embodiments of the invention, taking the spiral case of Fig. 1 as benchmark, the dividing plate arranging in the first anechoic chamber, downside wallboard 32 outside, can start from snail tongue, arranges one counterclockwise in the position of 90 degree, forms two independently anechoic chambers.Certainly, also can, according to three dividing plates are set every the position of miter angle, form four anechoic chambers.More dividing plates also can be set in addition.In like manner, in described the second anechoic chamber 15, multiple dividing plates also can be set, the second anechoic chamber 15 is divided into multiple independently anechoic chambers.
Inventor's discovery is provided with bloop and anechoic chamber's structure on spiral case, and the parameter relevant to resonant frequency comprises punching rate σ, anechoic chamber's depth d, spiral case thickness t, wherein punching rate σ=π r
2/ 4ab(r is the radius of bloop, and a, b are hole pitch), punching rate refers within the scope of perforation field, the gross area of perforation eyelet accounts for the percentage of whole area.Therefore by changing above-mentioned parameter, can change resonant frequency, avoid spiral case to produce resonance, reduce the peak value of resonance noise.The cabinet air-conditioner of most is two or three systems, and for adapting to the air output requirement of this class air-conditioning, the present invention has made further improvement on the basis of above scheme.As a further improvement on the present invention, described the first bloop 6 and the second bloop 16 are uniformly distributed, the punching rate of the first bloop 6 or the second bloop 16 is 0.5%-3%, or the aperture of described the first bloop 6 or the second bloop (16) is 1-3mm, or the degree of depth of described the first anechoic chamber 5 or the second anechoic chamber 15 is 10-80mm.Although the improvement of above technological scheme has good noise reduction for two or three indoor apparatus of air conditioner processed, can not limit spiral case concrete structure of the present invention and be only applicable to this class air-conditioning.
Further, anticentripetal spiral casing of the present invention, described the first bloop 6 and the second bloop 16 are uniformly distributed, the punching rate of described the first bloop 6 or the second bloop 16 is 0.5%-3%, the aperture of described the first bloop 6 or the second bloop 16 is 1-3mm, and the degree of depth of described the first anechoic chamber 5 or the second anechoic chamber (15) is 10-80mm.Spiral case assembly of the present invention is used for to centrifugal blower, on the blower fan standard test platform that meets GB-1236, test, spiral case taking thickness as 3mm is example, the aperture of the aperture of the first bloop 6 and hole pitch and the second bloop 16 and hole pitch are selected same size, the degree of depth of the degree of depth of the first anechoic chamber 5 and the second anechoic chamber 15 is selected same size, when corresponding aperture, the specific experiment data that hole pitch, anechoic chamber's degree of depth obtain while change are as follows:
| Thickness of slab (mm) | Aperture (mm) | Hole pitch (mm) | Anechoic chamber's degree of depth (mm) | Noise figure |
| 3 | 0 | 0 | 0 | 39.05dB/ |
| 3 | 1 | 10 | 70 | 33.79dB/ |
| 3 | 2 | 20 | 62 | 36.8dB/ |
| 3 | 2 | 19 | 23 | 33.2dB/ |
| 3 | 3 | 30 | 54 | 38.5dB/490HZ |
Can find out from above laboratory data, when the thickness of the shell wall of spiral case is 3mm, bloop aperture is 2mm, hole pitch is 19mm, when anechoic chamber's 5 degree of depth are 23mm, compared with not using the conventional centrifugal blower of spiral case assembly of the present invention, use spiral case of the present invention make blower fan reducing noise 5.85dB, can significantly improve resonance noise peak value, extraordinary noise peak reduction, tonequality obviously improves.
The present invention also provides a kind of indoor apparatus of air conditioner, comprises anticentripetal spiral casing, and anticentripetal spiral casing is anticentripetal spiral casing as above.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (11)
1. an anticentripetal spiral casing, comprise front panel (1) and side panel, side panel comprises the first side wall plate (3) and the second side panel (4), the first side wall plate (3) comprises snail tongue (33), the upside wallboard (31) being connected with snail tongue (33) and the downside wallboard (32) being connected with snail tongue (33), described downside wallboard (32) is connected with described the second side panel (4), it is characterized in that, on described downside wallboard (32), offer the first bloop (6), and be provided with in described downside wallboard (32) outside the first anechoic chamber (5) being communicated with described the first bloop (6).
2. anticentripetal spiral casing according to claim 1, it is characterized in that, upper from starting to offer the first bloop (6) with the joint of described snail tongue (33) at described downside wallboard (32), and be provided with in described downside wallboard (32) outside the first anechoic chamber (5) being communicated with described the first bloop (6), the head and the tail two-end-point of the orthographic projection of the part that described downside wallboard (32) is provided with the first bloop (6) and the first anechoic chamber (5) in described front panel (1) is 10 degree to 90 degree with the scope of the included angle A of the line of the center of circle O of spiral case intake grill (11) respectively.
3. anticentripetal spiral casing according to claim 1 and 2, it is characterized in that, in described the first anechoic chamber (5), be provided with multiple dividing plates, described divider upright, in the tangent line of described downside wallboard (32), is divided into multiple independently anechoic chambers by the first anechoic chamber (5).
4. anticentripetal spiral casing according to claim 1 and 2, it is characterized in that, on described upside wallboard (31), offer the second bloop (16), and be provided with in described upside wallboard (31) outside the second anechoic chamber (15) being communicated with described the second bloop (16).
5. anticentripetal spiral casing according to claim 1 and 2, it is characterized in that, upper from starting to offer the second bloop (16) with the joint of described snail tongue (33) at described upside wallboard (31), and be provided with in described upside wallboard (31) outside the second anechoic chamber (15) being communicated with described the second bloop (16).
6. anticentripetal spiral casing according to claim 4, is characterized in that, in described the second anechoic chamber (15), is provided with multiple dividing plates, and described divider upright, in described upside wallboard (31), is divided into multiple independently anechoic chambers by the second anechoic chamber (15).
7. anticentripetal spiral casing according to claim 4, is characterized in that, described the first bloop (6) and the second bloop (16) are uniformly distributed, and the punching rate of the first bloop (6) or the second bloop (16) is 0.5%-3%.
8. anticentripetal spiral casing according to claim 4, is characterized in that, the aperture of described the first bloop (6) or the second bloop (16) is 1-3mm.
9. anticentripetal spiral casing according to claim 4, is characterized in that, the degree of depth of described the first anechoic chamber (5) or the second anechoic chamber (15) is 10-80mm.
10. anticentripetal spiral casing according to claim 4, it is characterized in that, described the first bloop (6) and the second bloop (16) are uniformly distributed, the punching rate of described the first bloop (6) or the second bloop (16) is 0.5%-3%, the aperture of described the first bloop (6) or the second bloop (16) is 1-3mm, and the degree of depth of described the first anechoic chamber (5) or the second anechoic chamber (15) is 10-80mm.
11. 1 kinds of indoor apparatus of air conditioner, comprise anticentripetal spiral casing, it is characterized in that, described anticentripetal spiral casing is the anticentripetal spiral casing as described in claim 1-10 any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410050441.2A CN103835999A (en) | 2014-02-13 | 2014-02-13 | Centrifugal volute and air conditioner indoor unit with same |
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| CN201410050441.2A CN103835999A (en) | 2014-02-13 | 2014-02-13 | Centrifugal volute and air conditioner indoor unit with same |
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| CN201410050441.2A Pending CN103835999A (en) | 2014-02-13 | 2014-02-13 | Centrifugal volute and air conditioner indoor unit with same |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104266285A (en) * | 2014-09-11 | 2015-01-07 | 青岛海尔空调器有限总公司 | Table top air conditioner |
| CN104807095A (en) * | 2015-05-08 | 2015-07-29 | 珠海格力电器股份有限公司 | Air conditioner |
| CN106016406A (en) * | 2016-07-14 | 2016-10-12 | 广东美的厨房电器制造有限公司 | Volute assembly and exhaust hood |
| CN107664141A (en) * | 2017-09-30 | 2018-02-06 | 常州大学 | A kind of high powered diesel locomotive low noise dusting fan spiral case |
| CN108240357A (en) * | 2017-12-27 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of wind turbine noise reduction spiral tougue |
| CN110873077A (en) * | 2018-08-29 | 2020-03-10 | 联想（新加坡）私人有限公司 | Fan device and electronic apparatus |
| JP2020037936A (en) * | 2018-08-29 | 2020-03-12 | レノボ・シンガポール・プライベート・リミテッド | Fan device and electronic instrument |
| CN114857053A (en) * | 2022-05-30 | 2022-08-05 | 杭州老板电器股份有限公司 | Volute, multi-wing centrifugal fan and range hood |
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2014
- 2014-02-13 CN CN201410050441.2A patent/CN103835999A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266285B (en) * | 2014-09-11 | 2017-02-01 | 青岛海尔空调器有限总公司 | Table top air conditioner |
| CN104266285A (en) * | 2014-09-11 | 2015-01-07 | 青岛海尔空调器有限总公司 | Table top air conditioner |
| CN104807095B (en) * | 2015-05-08 | 2020-02-21 | 珠海格力电器股份有限公司 | Air conditioner |
| 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 |
| CN106016406A (en) * | 2016-07-14 | 2016-10-12 | 广东美的厨房电器制造有限公司 | Volute assembly and exhaust hood |
| CN107664141A (en) * | 2017-09-30 | 2018-02-06 | 常州大学 | A kind of high powered diesel locomotive low noise dusting fan spiral case |
| CN108240357A (en) * | 2017-12-27 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of wind turbine noise reduction spiral tougue |
| CN108240357B (en) * | 2017-12-27 | 2024-05-14 | 宁波方太厨具有限公司 | Noise-reducing volute tongue of fan |
| CN110873077A (en) * | 2018-08-29 | 2020-03-10 | 联想（新加坡）私人有限公司 | Fan device and electronic apparatus |
| JP2020037936A (en) * | 2018-08-29 | 2020-03-12 | レノボ・シンガポール・プライベート・リミテッド | Fan device and electronic instrument |
| US11078927B2 (en) | 2018-08-29 | 2021-08-03 | Lenovo (Singapore) Pte Ltd | Electronic device having a fan |
| CN114857053A (en) * | 2022-05-30 | 2022-08-05 | 杭州老板电器股份有限公司 | Volute, multi-wing centrifugal fan and range hood |
| CN114857053B (en) * | 2022-05-30 | 2024-02-27 | 杭州老板电器股份有限公司 | Volute, multi-wing centrifugal fan and range hood |
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