CN201771854U - Tubular wind wheel capable of effectively reducing noise and air equipment provided with same - Google Patents
Tubular wind wheel capable of effectively reducing noise and air equipment provided with same Download PDFInfo
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- CN201771854U CN201771854U CN2010205141499U CN201020514149U CN201771854U CN 201771854 U CN201771854 U CN 201771854U CN 2010205141499 U CN2010205141499 U CN 2010205141499U CN 201020514149 U CN201020514149 U CN 201020514149U CN 201771854 U CN201771854 U CN 201771854U
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- impeller
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- tubular wine
- wine wheel
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Abstract
The utility model discloses a tubular wind wheel capable of effectively reducing noise and air equipment provided with same. The tubular wind wheel consists of a rotating shaft and an impeller, wherein the impeller comprises two or more impeller middle segments that are sequentially and fixedly connected along the axial direction of the rotating shaft; each impeller middle segment comprises a plurality of vanes configured into a circle at intervals along the periphery in the circumferential direction; the end of each vane is provided with an end plate for fixing the vane; the impeller is internally provided with at least two adjacent impeller middle segments, and the peripheral diameters of the circles enclosed by the vanes on the two impeller middle segments are different. In the utility model, impeller middle segments with different diameters are crossly distributed, the clearances between the middle segments and the front edge of a worm tongue are avoided being the same as with that between the middle segments and a wind wheel shell, pressure changes generated from the clearances among the different impeller middle segments and the wind wheel shell can be staggered and simultaneously the rotational frequency noise peaks of the vanes are staggered, so that the rotational noise of the tubular wind wheel is reduced, the ultraharmonics noise caused by superposition of same frequency and amplitude noise is avoided, and harsh howling is avoided generating.
Description
Technical field
The utility model relates to a kind of tubular wine wheel and has the air device of this tubular wine wheel, particularly a kind of tubular wine wheel that helps improving tonequality, reduces the air-supply noise is applicable to that split-type air conditioner air conditioner indoor machine, mobile air conditioner, air cleaner, dehumidifier, low static pressure wind pipe machine, Balkh fan, seat hang air devices such as dual-purpose machine, latent type embedded air-conditioner and use.
Background technique
The air conditioner that is assembled with tubular wine wheel is usually as shown in Figure 3: be exactly that setting up and down of 2a upper edge, front figure at the housing 2 of indoor set 1 sucks grid 3 and discharge grid 4, make these suck grids 3 and discharge grid 4 by the ventilation channels 6 in the blower-casting 5 to be communicated with.And, be provided as the tubular wine wheel 8 of indoor fan at the downwind side of the indoor side heat exchanger 7 of this ventilation channel 6, make from the indoor airs that suck in the grid suction housing 2 and carry out heat exchange at indoor side heat exchanger 7, with tubular wine wheel 8 cold wind or warm braw are blown to indoor once more from grid 4, constitute hot and cold air-conditioning.
Above-mentioned air conditioner is employed to be the tubular wine wheel 8 of traditional form, for example shown in Figure 4 as described later, circumferentially be arranged between the discoideus end plate 8a of pairing left and right, 8b on a plurality of linear leaf 8c edge that will be parallel to fan shaft 0 by required uniformly-spaced crossbearer, by required spacing parallel arranging annular partition plate 8d is set vertically at axial intermediate portion, thereby form in the multistage impeller and save 29, the outer circumference diameter of the ring-type that blade surrounds that saves in each section impeller is identical.Tubular wine wheel 8 and blower-casting 5 shown in Figure 3 and leading edge 9 common formation gas fans are divided into wind and suck part and wind discharge section near the gap delta of leading edge 9, blower-casting 5 and tubular wine wheel 8.Especially at the gap portion δ at this two place since relatively the flow velocity direction of each linear leaf 8c of tubular wine wheel 8 take a turn for the worse, therefore big pressure oscillation takes place, become the main sound source of air-supply noise.
In the gas fan of the tubular wine wheel 8 that in outer circumference diameter blades such as tradition, saves, because the outer circumference diameter equal and opposite in direction of the blade ring-type that 8C surrounds that saves in each tradition, it is also identical with each gap delta of the formation of leading edge 9 and blower-casting 5, pressure oscillation takes place in each linear leaf 8c simultaneously, therefore in axial direction, it is identical in the pressure oscillation that radial space produces, and causes the pressure waveform distortion to strengthen.As shown in Figure 5, pulsation of the waveform of identical component and distortion are superimposed as and have bigger higher harmonics.The result of higher harmonics stack has just produced ear-piercing howling like this, has a strong impact on the tonequality of air conditioner, and has significantly improved the air-supply noise.The noise that causes because of this pressure oscillation takes place that (transverse axis is represented frequency noise among the figure shown in the noise waveform N of Fig. 5, the longitudinal axis is represented level of noise), with the number of the linear leaf 8c of tubular wine wheel 8 multiply by tubular wine wheel 8 rotating speed (revolutions per second, rps) expression, the frequency BPF (Blade Passing-byFrequency) that speed is called as sound insulation between blade rotation is noise Pa (Hz), and because of the pressure oscillation waveform is precipitous, so have the characteristic of easy generation as the higher harmonics (homophonic Pb) of first-harmonic.
Figure 5 shows that: when the diameter of tubular wine wheel 8 is 94mm, total length is 610mm, the number of linear leaf 8c is 35, linear leaf is parallel with fan shaft 0, with the rotating speed be 19rps (revolutions per second) during running, its blade speed BPF is 665Hz, and its secondary harmonics Pb is the analysis chart of the gas fan noise N of 1330Hz.Since exist tubular wine wheel 8 and snail tongue leading edge 9 and and the tendency that gap delta is more little, the revolution air quantity increases of blower-casting 5, but since during this time the pressure oscillation of crack part δ also increase, make wind wheel Rotation Noise N become big, its higher harmonics composition also increases.If make this gap δ too little, because each blade diameter is identical, thereby cause producing resonance by the noise stack of same frequency, make wind wheel speed noise N value raise, abnormal sounds such as howling take place, therefore, can not make this gap δ too small.
The model utility content
The technical problems to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, provides to make rotation sound and higher harmonics thereof lower, make noise to lower the tubular wine wheel that sense of hearing is improved.
Another purpose of the present utility model provides a kind of air device with this tubular wine wheel, thereby improves the noise and the wind pushing performance of air device.
The technical solution of the utility model is: a kind of tubular wine wheel of effective reduction noise, comprise running shaft and impeller, described impeller comprises in the two or more impellers that axially are fixedly connected sequentially along running shaft and saving, joint comprises that the circumferential circle spacing of some edges is configured to the blade of ring-type in each impeller, the end of blade is provided with the end plate of stator blade, it is characterized in that: have at least in the described impeller in two adjacent impellers and save, the outer circumference diameter of the ring-type that blade surrounds in these two impellers on the joint is inequality.
The outer circumference diameter of the ring-type that blade surrounds in any adjacent two impellers of described impeller on the joint is inequality.
The outer circumference diameter of the ring-type that blade surrounds in any two impellers of described impeller on the joint is inequality.
Described impeller comprises in two groups or more the impeller and saving, and joint is one group in the identical impeller of the outer circumference diameter of ring-type that blade surrounds, and joint is not staggered in the impeller on the same group.
Described impeller comprises in two groups or more the impeller and saving, and joint is one group in the identical impeller of the outer circumference diameter of ring-type that blade surrounds, and joint is arranged in together in the impeller on the same group.
One of them end plate that saves in the above-mentioned impeller is provided with the hub portion that engages with running shaft.
The technological scheme of a kind of air device disclosed in the utility model is: this air device comprises each described tubular wine wheel of aforesaid right requirement.
Tubular wine wheel provided by the utility model is fixed on a plurality of blades to form in the impeller between a pair of round shape or ring-type end plate and saves along circumferentially being configured to the ring-type crossbearer by required installation interval, and the outer circumference diameter of the ring-type that blade surrounds that saves in each section impeller is inequality.Make simultaneously to save in the above-mentioned impeller and stack gradually the fixedly connected whole section impeller that be integrally formed into vertically, fixed charge method end plate forms rotary shaft on above-mentioned each blade tip of a side that saves in the impeller at these stacked two ends, on the end plate of the other end, form the hub portion that engages with running shaft, after running shaft engages, thereby form one whole tubular wine wheel.
Therefore, because tubular wine wheel provided by the utility model is made of joint in the impeller of two or more peripheral sheet diameter at least, joint is interspersed in the blade of different-diameter, thereby avoided in each joint to reach effectively with snail tongue leading edge and the wind wheel housing between the gap identical, joint and snail tongue leading edge are reached and the wind wheel housing between the gap in the pressure oscillation that produces stagger, blade speed frequency noise and amplitude stagger simultaneously, thereby can reduce the Rotation Noise of tubular wine wheel, avoid the noise stack of same frequency and cause the higher harmonics noise, avoid producing ear-piercing howling.The crest frequency of lowered rotation sound is disperseed, thereby ear-piercing sense reduction, sense of hearing are improved.After this tubular wine wheel is assemblied on the air device, can improves the noise of air device and improve wind pushing performance.
In addition, because a side is stacked vertically is fixed into integrally formed tubular wine wheel with the multistage multiblade impeller.So manufacturing is simple, cost is low, and the combination by saving in the suitable selection different-diameter, can change the axial length of wind wheel easily, when guaranteeing air quantity, can effectively reduce noise and improve tonequality.
Description of drawings
Below with reference to embodiment of the present utility model and accompanying drawing, above-mentioned and other aspects of the present utility model are described.
Fig. 1 the utility model tubular wine wheel one embodiment's stereogram;
Fig. 2 is an exploded perspective view embodiment illustrated in fig. 1;
Fig. 3 is the sectional arrangement drawing of indoor set one example of expression conventional air conditioner;
Fig. 4 is the stereogram of traditional tubular wine wheel;
Fig. 5 is the traditional tubular wine wheel noise spectrum distribution map of expression, and wherein transverse axis is represented frequency noise, and the longitudinal axis is represented level of noise;
Fig. 6 is expression the utility model embodiment tubular wine wheel noise spectrum distribution map, and wherein transverse axis is represented frequency noise, and the longitudinal axis is represented level of noise.
Use same label Fig. 1-6 pair of same or suitable part.
Embodiment
Remark additionally according to Fig. 1,2,6 couples of the utility model embodiments below.
Fig. 1 is the stereogram of expression the utility model embodiment main assembly, and Fig. 2 is the exploded perspective view of Fig. 1, and tubular wine wheel 21 is assembled into by in the air conditioner indoor machine 1 shown in Figure 3 as indoor fan.Will be by saving 29a, 29b in the peripheral diameter that blade 8c surrounds a plurality of impellers inequality, be configured to successively concentric annular vertically crossbearer be fixed between pairing left and right end plate 8a, 8b, tubular wine wheel 21 intermediate portions set demarcation strip 8d by required axially spaced-apart, make the impeller of above-mentioned formation form the through-flow air-supply of crossing whole impeller inside around fan shaft 0 rotation.
As shown in Figure 2, tubular wine wheel 21 is multistage to be formed respectively joint 29a is fixedly connected sequentially into concentric shape vertically with 29b in the different multiblade impeller of the diameter of one, in Fig. 2 on the outside as the discoideus of the end plate 8b that saves 29a (or 29b) in the multiblade impeller or ring-type demarcation strip 8d of right-hand member, be concentric shape and form to make with the running shaft of this illustrated motor etc. with retaining screw etc. and can freely dismantle the hub portion (axle sleeve) 27 that combines.
Next, with reference to Fig. 5 and Fig. 6 the noise of present embodiment being lowered effect describes.Represent as Fig. 5, the size of tubular wine wheel 8, for example diameter is 94mm, total length is 610mm, the number of linear leaf 8c is 35, and linear leaf is parallel with fan shaft 0, with the rotating speed be 1140rpm (rev/min) when running, blade passing frequency BPF is the analysis chart of the gas fan noise N of 35*1140/60=665Hz (one times fundamental frequency Pa=665Hz, twice fundamental frequency Pb=1330Hz).The noise stack that produces owing to identical blade passing frequency (BPF), cause at the noise peak at blade one times of fundamental frequency 665HZ of rotation and two times of fundamental frequency places bigger, thereby produce howling, also cause the overall noise value bigger than normal simultaneously.
In the utility model, shown in accompanying drawing 2,6, save 29a in the impeller of forming tubular wine wheel, the diameter of 29b is respectively 96mm, and during 90mm, then the gap delta of joint and snail tongue leading edge is respectively 6mm, 9mm in the impeller of these two kinds of different-diameters.When joint in these two kinds of impellers intermeshes combination, the frequency noise and the noise amplitude that produce in its snail tongue room are all inequality, its integrated noise stack frequency spectrum as shown in Figure 6, the amplitude Pa of air-supply noise N and blade speed noise BPF (Blade Passing-byFrequency) with and overtone peak value Pb all significantly reduce, avoid the noise stack of same frequency and amplitude composition effectively and produce the resonance noise, thereby ear-piercing howling and buzz that conventional tubular wine wheel is easy to generate have been eliminated, tonequality and sense of hearing have been improved, and reduce noise more than 2 decibels, can ensure air quantity effectively simultaneously.
Though present embodiment has only provided the tubular wine wheel example of joint combination in the impeller of two kinds of diameters, the utility model comprises the combination that saves in the impeller of two kinds and two or more different-diameters.Simultaneously, joint combination can be that joint 29a becomes one group in the impeller of a plurality of diameters of the same race in the impeller of different-diameter, be positioned at an end of tubular wine wheel 21, joint 29b becomes one group in the impeller of a plurality of another kind of diameters, be positioned at the other end of tubular wine wheel, or saving 29a in the impeller of two groups of different-diameters, 29b is interspersed.Or more than three kinds and three kinds, joint combination in the impeller of the above different-diameters of three groups or three groups, with the noise of effective reduction tubular wine wheel, improve tonequality and sense of hearing.
Claims (7)
1. tubular wine wheel that effectively reduces noise, comprise running shaft and impeller, described impeller comprises in the two or more impellers that axially are fixedly connected sequentially along running shaft and saving, joint comprises that the circumferential circle spacing of some edges is configured to the blade of ring-type in each impeller, the end of blade is provided with the end plate of stator blade, it is characterized in that: have at least in the described impeller in two adjacent impellers and save, the outer circumference diameter of the ring-type that blade surrounds in these two impellers on the joint is inequality.
2. according to the tubular wine wheel of the described effective reduction noise of claim 1, it is characterized in that: the outer circumference diameter of the ring-type that blade surrounds in any adjacent two impellers of described impeller on the joint is inequality.
3. according to the tubular wine wheel of the described effective reduction noise of claim 1, it is characterized in that: the outer circumference diameter of the ring-type that blade surrounds in any two impellers of described impeller on the joint is inequality.
4. according to the tubular wine wheel of the described effective reduction noise of claim 1, it is characterized in that: described impeller comprises in two groups or more the impeller and saving, joint is one group in the identical impeller of the outer circumference diameter of ring-type that blade surrounds, and joint is not staggered in the impeller on the same group.
5. according to the tubular wine wheel of the described effective reduction noise of claim 1, it is characterized in that: described impeller comprises in two groups or more the impeller and saving, joint is one group in the identical impeller of the outer circumference diameter of ring-type that blade surrounds, and joint is arranged in together in the impeller on the same group.
6. according to the tubular wine wheel of each described effective reduction noise of claim 1 to 5, it is characterized in that: one of them end plate that saves in the described impeller is provided with the hub portion that engages with running shaft.
7. an air device is characterized in that: comprise aforesaid right requirement 1～5 each described tubular wine wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205141499U CN201771854U (en) | 2010-08-31 | 2010-08-31 | Tubular wind wheel capable of effectively reducing noise and air equipment provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205141499U CN201771854U (en) | 2010-08-31 | 2010-08-31 | Tubular wind wheel capable of effectively reducing noise and air equipment provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201771854U true CN201771854U (en) | 2011-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205141499U Expired - Lifetime CN201771854U (en) | 2010-08-31 | 2010-08-31 | Tubular wind wheel capable of effectively reducing noise and air equipment provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201771854U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162464A (en) * | 2011-05-05 | 2011-08-24 | 广东志高空调有限公司 | Cross flow wind wheel of sawtooth-type vanes with pits |
| CN102619783A (en) * | 2012-04-18 | 2012-08-01 | 广东志高空调有限公司 | Blade structure for centrifugal fans |
| CN104981612A (en) * | 2013-02-12 | 2015-10-14 | 大金工业株式会社 | Air conditioner |
| CN106089800A (en) * | 2016-08-18 | 2016-11-09 | 珠海格力电器股份有限公司 | Blower fan and through-flow fan blade thereof |
| CN107939730A (en) * | 2017-12-19 | 2018-04-20 | 宁波朗迪叶轮机械有限公司 | Through-flow fan blade and air-conditioning |
| CN109323329A (en) * | 2018-10-11 | 2019-02-12 | 珠海格力电器股份有限公司 | A kind of air conditioner and its control method with double through-flow fan blade |
| CN110486322A (en) * | 2019-09-12 | 2019-11-22 | 宁波奥克斯电气股份有限公司 | A kind of through-flow fan blade and air conditioner of anti-surge |
| WO2022143328A1 (en) * | 2020-12-31 | 2022-07-07 | 广东美的厨房电器制造有限公司 | Centrifugal fan, household appliance, volute, and cooking utensil |
-
2010
- 2010-08-31 CN CN2010205141499U patent/CN201771854U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162464A (en) * | 2011-05-05 | 2011-08-24 | 广东志高空调有限公司 | Cross flow wind wheel of sawtooth-type vanes with pits |
| CN102619783A (en) * | 2012-04-18 | 2012-08-01 | 广东志高空调有限公司 | Blade structure for centrifugal fans |
| CN104981612A (en) * | 2013-02-12 | 2015-10-14 | 大金工业株式会社 | Air conditioner |
| CN104981612B (en) * | 2013-02-12 | 2017-02-22 | 大金工业株式会社 | Air conditioner |
| CN106089800A (en) * | 2016-08-18 | 2016-11-09 | 珠海格力电器股份有限公司 | Blower fan and through-flow fan blade thereof |
| CN106089800B (en) * | 2016-08-18 | 2019-10-22 | 珠海格力电器股份有限公司 | Blower and its through-flow fan blade |
| CN107939730A (en) * | 2017-12-19 | 2018-04-20 | 宁波朗迪叶轮机械有限公司 | Through-flow fan blade and air-conditioning |
| CN107939730B (en) * | 2017-12-19 | 2024-02-09 | 宁波朗迪叶轮机械有限公司 | Cross-flow fan blade and air conditioner |
| CN109323329A (en) * | 2018-10-11 | 2019-02-12 | 珠海格力电器股份有限公司 | A kind of air conditioner and its control method with double through-flow fan blade |
| CN110486322A (en) * | 2019-09-12 | 2019-11-22 | 宁波奥克斯电气股份有限公司 | A kind of through-flow fan blade and air conditioner of anti-surge |
| WO2022143328A1 (en) * | 2020-12-31 | 2022-07-07 | 广东美的厨房电器制造有限公司 | Centrifugal fan, household appliance, volute, and cooking utensil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER OWNER: MEIDI ELECTRIC APPLIANCES CO., LTD., GUANGDONG Effective date: 20140108 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140108 Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: Midea Group Co., Ltd. Address before: 528311 Penglai Road, Beijiao Town, Shunde District, Guangdong, Foshan province Midea Group Co., Ltd. Patentee before: Meidi Electric Appliances Co., Ltd., Guangdong |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |
|
| CX01 | Expiry of patent term |