CN101429949B - Cross flow wind wheel - Google Patents
Cross flow wind wheel Download PDFInfo
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- CN101429949B CN101429949B CN2008102196213A CN200810219621A CN101429949B CN 101429949 B CN101429949 B CN 101429949B CN 2008102196213 A CN2008102196213 A CN 2008102196213A CN 200810219621 A CN200810219621 A CN 200810219621A CN 101429949 B CN101429949 B CN 101429949B
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Abstract
The invention relates to a tubular wind wheel capable of being used for air conditioner and fan products such as a split-type air conditioner indoor unit, a movable air conditioner, an air freshener, a dehumidifier, a low static pressure blast pipe machine, a tower fan, a window type air conditioner and so on. The tubular wind wheel comprises a rotating shaft (27) and blades which are arranged on the rotating shaft (27), and is characterized in that the blades which are arranged on the rotating shaft (27) comprise large blades (24) and small blades (26); the diameters of the large blades (24)and the small blades (26) are unequal, and the large-diameter blades (24) and the small-diameter blades (26) are distributed in the staggered form; and the mounting intervals along the circumferential direction between the large blades (24) and the small blades (26) are unequal intervals. The tubular wind wheel has the advantages of good sound quality, low noise, large air quantity, high production efficiency, easy change of the shape of the blades and the length of the wind wheel, high reliability and so on.
Description
Technical field
The present invention is a kind of tubular wine wheel that is used for air-conditioning such as split-type air conditioner air conditioner indoor machine, mobile air conditioner, air cleaner, dehumidifier, low static pressure wind pipe machine, Balkh fan, window air conditioner and fan product, belongs to the renovation technique of tubular wine wheel.
Background technique
It is shown in figure 10 to have the tubular wine wheel that is assembled into air conditioner now; Setting up and down of 2a upper edge, front figure at the housing 2 of indoor set 1 sucks grid 3 and discharges grid 4 exactly, makes these suck grids 3 and discharge grid 4 and be communicated with through the ventilation channels 6 in the blower-casting 5.
And; Downwind side at the indoor side heat exchanger 7 of this ventilation channel 6 is provided with the tubular wine wheel 21 as indoor fan; Make from the indoor airs that suck in the grid 3 suction housings 2 and carry out heat exchange at indoor side heat exchanger 7; With tubular wine wheel 21 cold wind or warm braw are blown to indoor from discharging grid 4 once more, constitute hot and cold air-conditioning.
The tubular wine wheel 21 of this kind traditional form is shown in figure 11; At a plurality of linear leaf 21c that will be parallel to fan shaft 0 along circumferentially being arranged on 22,23 of the discoideus end plates of pairing left and right by required uniformly-spaced crossbearer, at axial intermediate portion vertically by the required annular partition plate 25 that uniformly-spaced is set up in parallel.In addition, tubular wine wheel 21 and blower-casting 5 shown in Figure 10 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 21.Especially at the gap portion δ at this two place since relatively the flow velocity direction of each linear leaf 21c of tubular wine wheel 21 take a turn for the worse, therefore big pressure oscillation takes place, become the main sound source of air-supply noise.The noise that causes because of this pressure oscillation takes place shown in the noise waveform N of Fig. 8; Multiply by frequency (Hz) the noise Pa that rotating speed (rps) expression, frequency are called as sound insulation between blade with the number of the linear leaf 21c of tubular wine wheel 21; And, be prone to take place characteristic as the higher harmonics (homophonic Pb) of first-harmonic so have because of the pressure oscillation waveform is precipitous.
Fig. 8 is the analysis chart of tubular wine wheel 21 gas fan noise N, and the size of this tubular wine wheel 21 and operating mode are: diameter is 94mm, and total length is 611mm; The number of linear leaf 21c is 35; Linear leaf is parallel with fan shaft 0, rotating speed be 19rps (revolutions per second) when running (Pa=665Hz, Pb=1330Hz).
In addition, exist tubular wine wheel 21 and snail tongue leading edge 9 and with 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 shaking by the noise stack generation association 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.
In the gas fan of traditional equal diameter tubular wine wheel 21; Because the blade diameter equal and opposite in direction of each traditional blades 21c; 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, so the pressure oscillation that it produces in the space is identical, causes the pressure waveform distortion to strengthen.As shown in Figure 8, the waveform pulsation of identical component and distortion are superimposed as has 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 improved the air-supply noise.
Summary of the invention
The objective of the invention is to consider the problems referred to above and provide a kind of rotation sound and higher harmonics thereof of making to lower, make noise to lower that sense of hearing is improved, and can improve the tubular wine wheel of wind pushing performance simultaneously.
Technological scheme of the present invention is: tubular wine wheel; Include rotating shaft and be installed in the blade in the rotating shaft; The blade that wherein is installed in the rotating shaft includes big blade and small leaf; Big blade does not wait with the diameter of small leaf, and the major diameter blade is interspersed with small diameter blades, and the circumferential installation interval Pa-Pn in edge is a unequal interval between blade and the small leaf greatly.
Be equiped with in the above-mentioned rotating shaft in the impeller that plurality of sections is integrally formed by big blade, small leaf and demarcation strip and save, joint is fixed along the axial connection of rotating shaft in the impeller.
Above-mentioned big blade, small leaf are being tapered to blade tip portion from its root perpendicular to the thickness on the section of rotating shaft.
Above-mentioned big blade, small leaf vertically form curve-like along himself.
Above-mentioned big blade, small leaf vertically form circular-arc along himself.
Between above-mentioned big blade and the small leaf along circumferential installation interval Pa-Pn for all having nothing in common with each other, or the combination of at least two group different interval.
The present invention is owing to adopt the structure that improves through to blade shape and installation interval, and the present invention compared with prior art has following advantage:
1) the present invention is owing to be arranged to blade diameter with each big blade and small leaf and differ in size; Major diameter blade and small diameter blades are interspersed; The pressure that in the gap of tubular wine wheel and snail tongue leading edge and blower-casting, produces is changed continuously; Rotation sound peak value is all reduced with its overtone peak value, improve sense of hearing thereby can reduce ear-piercing sense.
2) the present invention since will be respectively by fixing being connected vertically of saving in the big blade of demarcation strip and each and the multistage impeller that small leaf is integrally formed; So; Can change the entire length of tubular wine wheel easily through its hop count of suitable adjustment; Also change the shape of big blade and small leaf more easily, thereby manufacture cost is reduced, and the intensity of big blade, small leaf and demarcation strip is improved; Simultaneously stable accuracy and the raisings such as setting angle between big blade, small leaf and demarcation strip can be made, thereby the conformity of wind pushing performance can be improved.
3) the present invention is because forming from its root, attenuating to blade tip portion perpendicular to the thickness on the section of fan shaft each big blade, small leaf; The frictional force when metal pattern is extracted of joint in the multiblade impeller behind the injection moulding is reduced and extract easily, formability is improved.Simultaneously since do not make stress remain in big blade, small leaf from one's body, thereby can improve blade strength.
4) the present invention is because through vertically forming curve-likes such as circular-arc with big blade, small leaf self along it; Major diameter blade and small diameter blades are interspersed simultaneously; Can make the gap of big blade, the relative snail tongue of small leaf leading edge and blower-casting different; Can avoid the noise stack of same frequency and produce resonance, thereby can reduce the rotation sound, and improve tonequality.
The present invention is that a kind of rotation sound and higher harmonics thereof of making lowers, reduces the fan air-supply noise, reaches and improves tonequality, can improve the convenient and practical tubular wine wheel of wind pushing performance simultaneously.
Description of drawings
Fig. 1 tubular wine wheel one embodiment's of the present invention stereogram,
Fig. 2 is an exploded perspective view embodiment illustrated in fig. 1,
Fig. 3 is the detailed enlarged view of axle sleeve side of Fig. 1,
Fig. 4 is the detailed enlarged view of axle side of Fig. 1,
Fig. 5 saves stereogram in the multiple-blade of big and small blade through-flow impeller shown in Figure 2,
Fig. 6 is the plan view of impeller shown in Figure 5,
Fig. 7 is another disposing way stereogram of impeller shown in Figure 5,
Fig. 8 is the traditional tubular wine wheel noise spectrum distribution map of expression,
Fig. 9 is expression embodiment of the invention tubular wine wheel noise spectrum distribution map,
Figure 10 is the sectional arrangement drawing of indoor set one example of expression conventional air conditioner,
Figure 11 is the stereogram of traditional tubular wine wheel shown in Figure 10,
Air quantity noise curve figure when Figure 12 does corresponding comparison for embodiment of the invention tubular wine wheel performance and conventional case,
Embodiment
Embodiment:
Fig. 1 is the stereogram of embodiment of the invention main assembly; Fig. 2 is the exploded perspective view of Fig. 1; Fig. 3 is with two-part rear axle housing side (motor side) enlarged view in detail that axially is divided into embodiment illustrated in fig. 1; Fig. 4 is with the detailed enlarged view of two-part rear axle side that axially is divided into embodiment illustrated in fig. 1, and tubular wine wheel 21 is assembled into by the tubular wine wheel in the air conditioner indoor machine 1 shown in Figure 10 as indoor fan.Make big blade 24 that the circular-arc diameter in a plurality of transverse section do not wait and small leaf 26 be configured to concentric annular vertically crossbearer be fixed on 22,23 of pairing left and right end plates; On the axial intermediate portion of each big blade 24 and small leaf 26, set demarcation strip 25, make the impeller of above-mentioned formation form the through-flow air-supply of crossing whole impeller inside around fan shaft 0 rotation by required axially spaced-apart.
As shown in Figure 2; Tubular wine wheel 21 is that joint 29 is fixedly connected sequentially into concentric shape vertically in the multiblade impeller that multistage is integrally formed respectively; In Fig. 2 on the outside as the discoideus or ring-type demarcation strip 25 of joint 29 end plate 23 in the multiblade impeller of right-hand member, be concentric shape and form to make with the rotating shaft 27 of motivation with retaining screw etc. and can freely dismantle the hub portion 28 that combines.
In the present embodiment, as shown in Figure 6, set each the big blade 24 on each demarcation strip 25 of joint 29 in each multiblade impeller and installation interval Pa along the circumferential direction, Pb, the Pc......Pn of small leaf 26 for unequal interval respectively.In addition, as shown in Figure 1, with joint 29 in each axial adjacent multiblade impeller of tubular wine wheel 21 for example to sense of rotation successively by the predetermined angular several angle that staggers, be concentric shape and connect fixing; In each perhaps adjacent multiblade impeller joint 29 be in order concentric shape connect fixing, each other at circumferencial direction staggered angle degree not.
In addition, as shown in Figure 7, respectively with each big blade 24 form the thickness that makes its transverse section (perpendicular to the section of axle) from the 24c of blade root portion of demarcation strip 25 sides to the 24d of the blade tip portion such top attenuation shape that forms of attenuation gradually; Simultaneously each small leaf 26 form the thickness that makes its transverse section (perpendicular to the section of axle) from the 26c of blade root portion of demarcation strip 25 sides to the 26d of the blade tip portion such top attenuation shape that forms of attenuation gradually.
Figure 12 is that impeller diameter, lobe numbers, impeller length and the rotating speed of the tubular wine wheel of the embodiment of the invention is identical with traditional tubular wine wheel, and test method records the noise distribution map when identical with experimental condition.As can beappreciated from fig. 12, adopt example of the present invention can reduce about 2 decibels of noises effectively.
Because each big blade 24 of present embodiment is arranged to blade diameter with small leaf 26 to differ in size; Major diameter blade 24 is interspersed with small diameter blades 26, and the pressure that in the gap of tubular wine wheel 21 and snail tongue leading edge 9 shown in Figure 10 and blower-casting 5, produces is changed continuously.Make each big blade 24 be the unequal interval occasion along circumferential installation interval Pa-Pn simultaneously with small leaf 26, as shown in Figure 6, rotation sound peak value Pa is reduced with its overtone peak value Pb.The noise spectrum of the embodiment of the invention is as shown in Figure 9.
In addition; Because set a plurality of big blades 24 and small leaf 26 for unequal interval along circumferential installation interval Pa-Pn; Can make big blade 24; Small leaf 26 is different with the gap of snail tongue leading edge 9 shown in Figure 10 and blower-casting 5, and the crest frequency composition of the rotation sound N that reduces disperses, and improves sense of hearing thereby can reduce ear-piercing sense.
And; Because present embodiment will be respectively is connected fixing vertically by the multistage that saves 29 in the big blade 24 of demarcation strip 25 and each and the impeller that small leaf 26 is integrally formed; So; Can change the entire length of tubular wine wheel 21 easily through its hop count of suitable adjustment, also change the shape of big blade 24 and small leaf 26 more easily, thereby manufacture cost is reduced.
In addition, because joint 29 is with big blade 24 in the multiblade impeller, small leaf 26 is integrally formed with demarcation strip 25, thereby has following effect.
(1) since in the multiblade impeller joint 29 be that big blade 24, small leaf 26 and demarcation strip 25 are integrally formed; Thereby the intensity of big blade 24, small leaf 26 and demarcation strip 25 is improved; The stable accuracy and the raisings such as setting angle of 25 of big blade 24, small leaf 26 and demarcation strips can be made simultaneously, thereby the conformity of wind pushing performance can be improved.
(2) and; Present embodiment is owing to attenuate from its root 24c, 26c forming perpendicular to the thickness on the section of fan shaft of each big blade 24, small leaf 26 to the 24d of blade tip portion, 26d; The frictional force when metal pattern is extracted of joint 29 in the multiblade impeller behind the injection moulding is reduced and extract easily, formability is improved.Simultaneously since do not make stress remain in big blade 24, small leaf 26 from one's body, thereby can improve blade strength.
(3) because through big blade 24, small leaf 26 self are vertically formed curve-likes such as circular-arc along it; Major diameter blade 24 is interspersed with small diameter blades 26 simultaneously; Can make the snail tongue leading edge 9 shown in big blade 24, small leaf 26 relative Figure 10 different with the gap of blower-casting 5; Can avoid the noise stack of same frequency and produce resonance, thereby can reduce rotation sound N, and improve tonequality.
In addition, in the present embodiment, big blade 24, small leaf 26 being set at unequal interval along circumferential installation interval Pa-Pn, yet also can not being to form whole installation interval Pa-Pn to have nothing in common with each other, for example, also can be the combination of two groups of above different interval.In this occasion, compare with all at interval having nothing in common with each other, the effect that can make the dispersion because of the crest frequency composition that ear-piercing sense is reduced weakens, however this with form comparing of same intervals, the result improves.
In addition,, the crest frequency because of the different rotation sounds that lower of mutliblade diameter is disperseed, therefore, ear-piercing sense is improved because a plurality of blades that will be installed on the demarcation strip 25 are set at unequal interval along circumferential installation interval.
In addition; Owing to each blade and demarcation strip be integrally formed form one section multiblade impeller; So can stablize the precision that improves the setting angle between these blades and demarcation strip and reduce the inhomogeneous of wind pushing performance; And since need not adopt riveted joint with each vanes fixed on demarcation strip, again owing to the gap that riveted fixing is used need be set on demarcation strip, thereby can prevent because of air-flow and flow into the flute sound that this gap takes place.
In addition; Owing to the multistage multiblade impeller is stacked gradually vertically be fixed into one to constitute tubular wine wheel, thus make make simple and cost low, and can change the fan axial length easily through the range upon range of number of this multistage multiblade impeller of suitable selection; And; Make the multistage multiblade impeller each other along circumferentially suitably staggering owing to can set easily, promptly so-called section staggers, also setting changing blade shape easily.
Because along forming perpendicular to the thickness on the section of fan shaft from blade root to blade tip attenuation gradually, the frictional force of multiblade impeller when model is extracted after the injection moulding lowers, the demoulding easily thereby can make, and makes formability good with each blade.
Owing to vertically become the circular-arc curve-like that waits through blade body being formed along it; The blade outer diameter does not wait simultaneously, and major diameter blade and small diameter blades are interspersed, thereby the rotation sound is reduced; Simultaneously since on blade body not for residual stress is arranged, make the intensity raising.
Claims (6)
1. tubular wine wheel; Include rotating shaft (27) and be installed in the blade in the rotating shaft (27); The blade that it is characterized in that being installed in the rotating shaft (27) includes big blade (24) and small leaf (26); Big blade (24) does not wait with the diameter of small leaf (26), and major diameter blade (24) is interspersed with small diameter blades (26), and the circumferential installation interval Pa-Pn in edge is a unequal interval between big blade (24) and the small leaf (26).
2. tubular wine wheel according to claim 1; It is characterized in that being equiped with in the above-mentioned rotating shaft (27) joint (29) in the impeller that plurality of sections is integrally formed by big blade (24), small leaf (26) and demarcation strip (25), joint (29) is fixed along the axial connection of rotating shaft (27) in the impeller.
3. tubular wine wheel according to claim 1 is characterized in that above-mentioned big blade (24), small leaf (26) are being tapered to blade tip portion (24d, 26d) from its root (24c, 26c) perpendicular to the thickness on the section of rotating shaft (27).
4. according to each described tubular wine wheel of claim 1 to 3, it is characterized in that above-mentioned big blade (24), small leaf (26) vertically form curve-like along himself.
5. tubular wine wheel according to claim 4 is characterized in that above-mentioned big blade (24), small leaf (26) vertically form circular-arc along himself.
6. tubular wine wheel according to claim 5 is characterized in that between above-mentioned big blade (24) and the small leaf (26) along circumferential installation interval Pa-Pn for all having nothing in common with each other, or the combination of at least two group different interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102196213A CN101429949B (en) | 2008-12-02 | 2008-12-02 | Cross flow wind wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102196213A CN101429949B (en) | 2008-12-02 | 2008-12-02 | Cross flow wind wheel |
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| Publication Number | Publication Date |
|---|---|
| CN101429949A CN101429949A (en) | 2009-05-13 |
| CN101429949B true CN101429949B (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008102196213A Active CN101429949B (en) | 2008-12-02 | 2008-12-02 | Cross flow wind wheel |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121210A (en) * | 2013-12-18 | 2014-10-29 | 东风柳州汽车有限公司 | Vehicle-mounted air conditioner air blower |
| CN104033404A (en) * | 2014-06-19 | 2014-09-10 | 徐荣兰 | Ventilation device |
| CN109323329A (en) * | 2018-10-11 | 2019-02-12 | 珠海格力电器股份有限公司 | Air conditioner with double cross-flow fan blades and control method thereof |
| CN109209990B (en) * | 2018-10-26 | 2024-07-02 | 珠海格力电器股份有限公司 | Cross-flow fan blade, cross-flow fan and air conditioner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201372965Y (en) * | 2008-12-02 | 2009-12-30 | 美的集团有限公司 | Cross flow wind wheel |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201372965Y (en) * | 2008-12-02 | 2009-12-30 | 美的集团有限公司 | Cross flow wind wheel |
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| CN101429949A (en) | 2009-05-13 |
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Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER OWNER: MEIDI ELECTRIC APPLIANCES CO., LTD., GUANGDONG Effective date: 20131209 |
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Effective date of registration: 20131209 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, Foshan District, Guangdong, China, Patentee before: Meidi Electric Appliances Co., Ltd., Guangdong |