CN103185029B - Centrifugation blade - Google Patents
Centrifugation blade Download PDFInfo
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- CN103185029B CN103185029B CN201310114114.4A CN201310114114A CN103185029B CN 103185029 B CN103185029 B CN 103185029B CN 201310114114 A CN201310114114 A CN 201310114114A CN 103185029 B CN103185029 B CN 103185029B
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Abstract
The present invention relates to field of ventilation equipment.Centrifugation blade, comprises ring leaf base plate, wheel hub, blade and baffle liner, and baffle liner is protruded on wheel hub top, blade is 8,8 blade vertical arrangements are between ring leaf base plate and baffle liner, and air intake angle angle is not more than 10 °, between air-out angle angle 25 °-35 °; Angle, blade axle center angle between adjacent blades is different; Blade top is made up of the connection area be connected as a single entity and disconnected district, and connection area length accounts for the 68%-72% of vane tip length.The advantage of this centrifugation blade is novel structure, and air quantity is large and noise is low.
Description
Technical field
The present invention relates to field of ventilation equipment, particularly relate to a kind of centrifugation blade.
Background technique
Centrifugation blade is product conventional in field of ventilation equipment, centrifugation blade comprises ring leaf base plate, wheel hub, blade and baffle liner, blade is fixed between ring leaf base plate and baffle liner, be connected as a single entity inside wheel hub and ring leaf base plate, wheel hub is concentric with ring leaf base plate, the center of hub top arranges axle sleeve, and during use, motor shaft drives fan blade to rotate through the axis hole on axle sleeve.The usability of centrifugation blade is mainly reflected in air force and noise control aspect, air force and noise height are mutual, the large noise of general air quantity is relatively just high, the little noise of air quantity is naturally low, the parameter that the usability of centrifugation blade relates to is a lot, the shape of such as leaf base plate, wheel hub, blade and baffle liner, size and Placement etc.Very reasonably centrifugation blade is few in air force and noise control in the market.
Summary of the invention
The object of the invention is the kind in order to enrich centrifugation blade, disclosing a kind of novel structure, the large and centrifugation blade that noise is low of air quantity.
In order to realize above-mentioned object, present invention employs following technological scheme:
Centrifugation blade, comprise ring leaf base plate, wheel hub, blade and baffle liner, blade is fixed between ring leaf base plate and baffle liner, be connected as a single entity inside wheel hub and ring leaf base plate, wheel hub is concentric with ring leaf base plate, and wheel hub is provided with multiple radiation hole, the center of hub top is provided with the cylindrical plastic shaft hole sleeve be connected as a single entity with it, arrange material-saving die cavity in blade, baffle liner is protruded on wheel hub top, and namely wheel hub top is on baffle liner top; Blade is 8, and 8 blade vertical arrangements are between ring leaf base plate and baffle liner, and institute's vaned air intake angle angle is identical, and air intake angle angle is not more than 10 °, and institute's vaned air-out angle angle is identical, between air-out angle angle 25 °-35 °; Angle, blade axle center angle between adjacent blades is different, and angle, blade axle center angle is all between 40 °-50 °, and angle, arbitrary neighborhood blade axle center angle difference is not more than 8 °; The inner and the outer end of all blades be arranged on ring leaf base plate form blade inner circle and blade cylindrical respectively, and in blade, diameter of a circle is the outer diameter of a circle 68%-72% of blade, and the outer diameter of a circle of blade is between 420mm-480mm; Blade top is made up of the connection area be connected as a single entity and disconnected district, and connection area and the baffle liner of blade are fixed by ultrasonic welding, and connection area place is provided with stiffener, and baffle liner is provided with the auxiliary reinforcing element with stiffener position and structure matching; Disconnected district is in the air intake direction inside blade, connection area is in the outside in disconnected district, connection area length accounts for the 68%-72% of vane tip length, the tie point in connection area and disconnected district is highest point and the summit of blade, blade medial extremity and air intake height are higher than blade outboard end and outlet air end, the height of blade outboard end is the 90%-97% of blade medial extremity height, and the height of blade outboard end is the 78%-83% of blade apex height; Air-admitting surface between arbitrary neighborhood blade is the 68%-72% of corresponding exhaust outlet area; The length of material-saving die cavity is the 75%-80% of length of blade; In ring leaf base plate, circular diameter is the 68%-75% of outside diameter; The height of baffle liner is the 65%-74% of baffle liner width, and the height of baffle liner is the 58%-65% of blade exhaust outlet height.
As preferably, air intake angle is blade air intake surface with the angle of the contrary tangent direction of fan blade sense of rotation and blade air intake surface circular arc tangential line, and air-out angle is blade outlet air surface with the angle of the contrary tangent direction of fan blade sense of rotation and blade outlet air surface circular arc tangential line.
As preferably, angle, blade axle center is that two blades and axle center radius form angle, and angle, 8 blade axle center is 48 °, 42 °, 47 °, 46 °, 43 °, 44 °, 49 ° and 41 ° respectively, effectively can reduce the rotational noise 4dB of fan blade.
As preferably, described stiffener is cylindricality stiffening rib, and described auxiliary reinforcing element is circular receiving groove; Stiffener is in the middle of vane tip, the distance of stiffener and blade air-out front end is the 90%-95% of the distance of stiffener and blade air intake rear end, further, the distance 63.4mm of stiffener and blade outlet air end, the distance of blade air intake is 67.6mm, ensure that the join strength of blade and baffle liner.
As preferably, the equal ovalize of described radiation hole, radiation hole is 8, the arrangement of 8 equidistant rules of radiation hole, each radiation hole is all in the radius between blade outboard outlet air end to the ring leaf base plate center of circle, arranges axle sleeve stiffening rib between arbitrary neighborhood two radiation holes, and the inner and the axle sleeve outer side wall of axle sleeve stiffening rib are connected as a single entity, thermal diffusivity is good, and axle sleeve intensity is good.
As preferably, in blade, circular diameter is 321.1mm, and blade outside diameter is 452.9mm; The thickness size of blade is no more than 15mm; Connection area length is 91.3mm, and vane tip length is 131mm; The height 55.6mm of blade outboard end, the height of blade medial extremity is 58.9mm, and the height of the tie point in connection area and disconnected district is 69.4mm; The length of material-saving die cavity is 103.3mm, and length of blade is 131mm; In described ring leaf base plate, circular diameter is 324.2mm, and ring leaf base plate outside diameter is 452.9mm; Hub height is 94.5mm, and fan blade side height is 128.5mm, and the height of baffle liner is 35mm, and the width of baffle liner is 50.5mm; The height of blade exhaust outlet is 55.6mm; Guide face on baffle liner is curved, and its radius of the radian value is between 16-19mm; The air intake angle angle of blade is 5.8 °, and the air-out angle angle of blade is 29.6 °.Adopt above-mentioned parameter, fan blade utilization efficiency is best, and air quantity is maximum and noise is minimum.
Have employed the centrifugation blade of above-mentioned technological scheme, the air intake angle angle of 8 blades is identical and be not more than 10 °, and air-out angle angle is identical and between 25 °-35 °, air inlet/outlet efficiency is high.Angle, blade axle center angle between adjacent blades is different, angle, blade axle center angle is all between 40 °-50 °, angle, arbitrary neighborhood blade axle center angle difference is not more than 8 °, effectively can reduce the rotational noise of fan blade, especially can eliminate the noise spike that fan blade rotates frequency multiplication place.Connection area place is provided with stiffener, baffle liner is provided with the auxiliary reinforcing element with stiffener position and structure matching, blade and baffle liner join strength high, disconnected district is in the air intake direction inside blade, increase incoming air area and air quantity increase, connection area is in the outside in disconnected district, and connection area length accounts for the 68%-72% of vane tip length, the bulk strength of fan blade can be ensured, can air quantity be promoted again.The tie point in connection area and disconnected district is highest point and the summit of blade, blade medial extremity and air intake height are higher than blade outboard end and outlet air end, the height of blade outboard end is the 90%-97% of blade medial extremity height, the height of blade outboard end is the 78%-83% of blade apex height, increase incoming air area, namely increase air quantity.Air-admitting surface between arbitrary neighborhood blade is the 68%-72% of corresponding exhaust outlet area, and obtain good static pressure, air intake efficiency at least improves 3%.In ring leaf base plate, circular diameter is the 68%-75% of outside diameter, and the height of baffle liner is the 65%-74% of baffle liner width, and the height of baffle liner is the 58%-65% of blade exhaust outlet height, reduces noise.The advantage of this centrifugation blade is novel structure, and air quantity is large and noise is low.
Accompanying drawing explanation
Fig. 1: the centrifugation blade structural representation of the embodiment of the present invention.
Fig. 2: the schematic diagram of the centrifugation blade bottom surface of the embodiment of the present invention.
Fig. 3: the centrifugation blade side schematic view not installing baffle liner in the embodiment of the present invention.
Fig. 4: the centrifugation blade plan view not installing baffle liner in the embodiment of the present invention.
Embodiment
Below in conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the embodiment of invention is made a detailed explanation.
As Fig. 1, Fig. 2, centrifugation blade shown in Fig. 3 and Fig. 4, mainly comprise ring leaf base plate 1, wheel hub 2, blade 3 and baffle liner 4, blade 3 is 8, 8 blade 3 vertical arrangements are between ring leaf base plate 1 and baffle liner 4, be connected as a single entity inside wheel hub 2 and ring leaf base plate 1, wheel hub 2 is concentric with ring leaf base plate 1, the center at wheel hub 2 top is provided with the cylindrical plastic shaft hole sleeve 5 be connected as a single entity with it, material-saving die cavity 31 is set in blade 3, wheel hub 2 is provided with 8 radiation holes 21, the arrangement of 8 equidistant rules of radiation hole 21, each radiation hole 21 is all in the radius outside blade 3 between outlet air end to ring leaf base plate 1 center of circle, between arbitrary neighborhood two radiation holes 21, axle sleeve stiffening rib 51 is set, the inner and cylindrical plastic shaft hole sleeve 5 outer side wall of axle sleeve stiffening rib 51 are connected as a single entity.
The air intake angle a angle of all blades 3 is identical, and air intake angle a angle is not more than 10 °, and institute's vaned air-out angle b angle is identical, between air-out angle b angle 25 °-35 °.Air intake angle a is blade air intake surface with the angle of the contrary tangent direction of fan blade sense of rotation and blade air intake surface circular arc tangential line, and air-out angle b is blade outlet air surface with the angle of the contrary tangent direction of fan blade sense of rotation and blade outlet air surface circular arc tangential line.Angle, blade axle center angle between adjacent blades 3 is different, angle, blade axle center angle is all between 40 °-50 °, angle, arbitrary neighborhood blade axle center angle difference is not more than 8 °, angle, blade axle center is that two blades and axle center radius form angle, angle, blade axle center angle difference can reduce the rotational noise of fan blade effectively, especially can eliminate the noise spike that fan blade rotates frequency multiplication place, the centrifugation blade identical relative to the angle, axle center of same Dimensions can reduce the rotational noise of fan blade.
The inner and the outer end of all blades 3 be arranged on ring leaf base plate 1 form blade inner circle and blade cylindrical respectively, and in blade, diameter of a circle is the outer diameter of a circle 68%-72% of blade, and the outer diameter of a circle of blade is between 420mm-480mm.Blade 3 top is made up of the connection area 32 be connected as a single entity and disconnected district 33, connection area 32 and the baffle liner 4 of blade are fixed by ultrasonic welding, connection area 32 place is provided with stiffener 321, baffle liner 4 is provided with the auxiliary reinforcing element with stiffener 321 position and structure matching, and blade 3 is high with baffle liner 4 join strength.Disconnected district 33 is in the air intake direction inside blade, connection area 32 is in the outside in disconnected district 33, connection area 33 length accounts for the 68%-72% of blade 3 top length, the intensity of the connection of blade 3 and baffle liner 4 can be ensured, air quantity can be promoted again, the tie point in connection area 32 and disconnected district 44 is highest point and the summit of blade 3, blade medial extremity and air intake height are higher than blade outboard end and outlet air end, the height of blade outboard end is the 90%-97% of blade medial extremity height, the height of blade outboard end is the 78%-83% of blade apex height, at least increase by the incoming air area of 2%, namely at least increase by the air quantity of 2%.Air-admitting surface between arbitrary neighborhood blade 3 is the 68%-72% of corresponding exhaust outlet area, and the static pressure obtained is good, and can obtain best static pressure, air intake efficiency at least improves 5%.The length of material-saving die cavity 31 is 75%-80% of blade 3 length.In ring leaf base plate 1, circular diameter is the 68%-75% of outside diameter, and the height of baffle liner 4 is 65%-74% of baffle liner 4 width, and the height of baffle liner 4 is 58%-65% of blade exhaust outlet height, well controls noise when air quantity strengthens.Stiffener 321 is cylindricality stiffening ribs, auxiliary reinforcing element is circular receiving groove, namely the cylindricality stiffening rib 321 on connection area 32 inserts in the circular receiving groove on baffle liner 4, stiffener 321 is in the middle at blade 3 top, stiffener 321 and the distance of blade air-out front end are stiffener 321 and the 90%-95% of the distance of blade air intake rear end, ensure that the join strength of blade 3 and baffle liner 4.
The parameter of above-mentioned centrifugation blade the best is as follows, and the air intake angle a angle of blade 3 is 5.8 °, and air-out angle b angle is 29.6 °.Angle, 8 blade axle center is 48 °, 42 °, 47 °, 46 °, 43 °, 44 °, 49 ° and 41 ° respectively, at least reduces the rotational noise 4dB of fan blade.In blade, circular diameter is 321.1mm, and blade outside diameter is 452.9mm.The thickness size of blade 3 is no more than 15mm.Blade 3 top length is 131mm, and blade 3 length is 131mm, and connection area 32 length is 91.3mm, and the height of the tie point in connection area 32 and disconnected district 33 is 69.4mm.The height 55.6mm of blade outboard end, the height of blade medial extremity is 58.9mm, and the height of blade exhaust outlet is 55.6mm.In ring leaf base plate 1, circular diameter is 324.2mm, and ring leaf base plate 1 outside diameter is 452.9mm.Wheel hub 2 height is 94.5mm, and the height of baffle liner 4 is 35mm, and the width of baffle liner 4 is 50.5mm, and the guide face on baffle liner 4 is curved, and its radius of the radian value is between 16-19mm.The length of material-saving die cavity 31 is 103.3mm, the distance 63.4mm of stiffener 321 and blade outlet air end, and stiffener 321 is 67.6mm with the distance of blade air intake.Adopt above-mentioned parameter, fan blade utilization efficiency is best, and air quantity is maximum and noise is minimum.Adopt the centrifugation blade of said structure and parameter, noise is effectively reduced under the prerequisite that air quantity increases, its air quantity of centrifugation blade that Dimensions is similar be in the market generally 2200 cubic metres per hour, noise is generally 49 decibels, adopt its air quantity of centrifugation blade of above-mentioned parameter be 2300 cubic metres per hour, noise is 44 decibels, and namely air quantity is large and noise is low.
Above-described embodiment is only the preferred forms of this patent, and such as air intake angle angle can also be that 1 °, 2 °, 3 °, 4 °, 5 °, 6 °, 7 °, 8 ° or 9 ° of air-out angle angles are between 25 °-35 °.
Claims (7)
1. centrifugation blade, comprise ring leaf base plate, wheel hub, blade and baffle liner, blade is fixed between ring leaf base plate and baffle liner, be connected as a single entity inside wheel hub and ring leaf base plate, wheel hub is concentric with ring leaf base plate, and wheel hub is provided with multiple radiation hole, the center of hub top is provided with the cylindrical plastic shaft hole sleeve be connected as a single entity with it, arrange material-saving die cavity in blade, it is characterized in that baffle liner is protruded on wheel hub top, namely wheel hub top is on baffle liner top; Blade is 8, and 8 blade vertical arrangements are between ring leaf base plate and baffle liner, and institute's vaned air intake angle angle is identical, and air intake angle angle is not more than 10 °, and institute's vaned air-out angle angle is identical, between air-out angle angle 25 °-35 °; Angle, blade axle center angle between adjacent blades is different, and angle, blade axle center angle is all between 40 °-50 °, and angle, arbitrary neighborhood blade axle center angle difference is not more than 8 °; The inner and the outer end of all blades be arranged on ring leaf base plate form blade inner circle and blade cylindrical respectively, and in blade, diameter of a circle is the outer diameter of a circle 68%-72% of blade, and the outer diameter of a circle of blade is between 420mm-480mm; Blade top is made up of the connection area be connected as a single entity and disconnected district, and connection area and the baffle liner of blade are fixed by ultrasonic welding, and connection area place is provided with stiffener, and baffle liner is provided with the auxiliary reinforcing element with stiffener position and structure matching; Disconnected district is in the air intake direction inside blade, connection area is in the outside in disconnected district, connection area length accounts for the 68%-72% of vane tip length, the tie point in connection area and disconnected district is highest point and the summit of blade, blade medial extremity and air intake height are higher than blade outboard end and outlet air end, the height of blade outboard end is the 90%-97% of blade medial extremity height, and the height of blade outboard end is the 78%-83% of blade apex height; Air-admitting surface between arbitrary neighborhood blade is the 68%-72% of corresponding exhaust outlet area; The length of material-saving die cavity is the 75%-80% of length of blade; In ring leaf base plate, circular diameter is the 68%-75% of outside diameter; The height of baffle liner is the 65%-74% of baffle liner width, and the height of baffle liner is the 58%-65% of blade exhaust outlet height.
2. a kind of centrifugation blade according to claim 1, it is characterized in that air intake angle is blade air intake surface with the angle of the contrary tangent direction of fan blade sense of rotation and blade air intake surface circular arc tangential line, air-out angle is blade outlet air surface with the angle of the contrary tangent direction of fan blade sense of rotation and blade outlet air surface circular arc tangential line.
3. a kind of centrifugation blade according to claim 1, it is characterized in that angle, blade axle center is that two blades and axle center radius form angle, angle, 8 blade axle center is 48 °, 42 °, 47 °, 46 °, 43 °, 44 °, 49 ° and 41 ° respectively.
4. centrifugation blade according to claim 1, it is characterized in that described stiffener is cylindricality stiffening rib, described auxiliary reinforcing element is circular receiving groove; Stiffener is in the middle of vane tip, and the distance of stiffener and blade outlet air end is the 90%-95% of the distance of stiffener and blade air intake.
5. a kind of centrifugation blade according to claim 4, is characterized in that the distance 63.4mm of stiffener and blade air-out front end, and the distance of blade air intake rear end is 67.6mm.
6. centrifugation blade according to claim 1, it is characterized in that the equal ovalize of described radiation hole, radiation hole is 8, the arrangement of 8 equidistant rules of radiation hole, each radiation hole is all in the radius between blade outboard outlet air end to the ring leaf base plate center of circle, arrange axle sleeve stiffening rib between arbitrary neighborhood two radiation holes, the inner and the axle sleeve outer side wall of axle sleeve stiffening rib are connected as a single entity.
7. centrifugation blade according to claim 1, it is characterized in that in blade, circular diameter is 321.1mm, blade outside diameter is 452.9mm; The thickness size of blade is no more than 15mm; Connection area length is 91.3mm, and vane tip length is 131mm; The height 55.6mm of blade outboard end, the height of blade medial extremity is 58.9mm, and the height of the tie point in connection area and disconnected district is 69.4mm; The length of material-saving die cavity is 103.3mm, and length of blade is 131mm; In described ring leaf base plate, circular diameter is 324.2mm, and ring leaf base plate outside diameter is 452.9mm; Hub height is 94.5mm, and fan blade side height is 128.5mm, and the height of baffle liner is 35mm, and the width of baffle liner is 50.5mm; The height of blade exhaust outlet is 55.6mm; Guide face on baffle liner is curved, and its radius of the radian value is between 16-19mm; The air intake angle angle of blade is 5.8 °, and the air-out angle angle of blade is 29.6 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310114114.4A CN103185029B (en) | 2013-04-03 | 2013-04-03 | Centrifugation blade |
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| CN201310114114.4A CN103185029B (en) | 2013-04-03 | 2013-04-03 | Centrifugation blade |
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| CN103185029A CN103185029A (en) | 2013-07-03 |
| CN103185029B true CN103185029B (en) | 2015-09-16 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925240A (en) * | 2014-04-03 | 2014-07-16 | 马鞍山市兴隆铸造有限公司 | High-efficiency cooling type motor fan |
| CN105332946A (en) * | 2015-12-09 | 2016-02-17 | 中国北方车辆研究所 | Centrifugal fan capable of generating large-air-quantity high-pressure heads |
| CN108286528B (en) * | 2018-01-10 | 2024-05-28 | 青岛海尔智慧厨房电器有限公司 | Fan and oven |
| TWI653397B (en) * | 2018-02-02 | 2019-03-11 | 建準電機工業股份有限公司 | Centrifugal fan wheel |
| CN112283151A (en) * | 2020-10-09 | 2021-01-29 | 青岛海尔智慧厨房电器有限公司 | Fan blade structure and oven with same |
| CN114963483B (en) * | 2021-02-20 | 2023-07-07 | 浙江盾安人工环境股份有限公司 | Liquid separator |
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| CN203175982U (en) * | 2013-04-03 | 2013-09-04 | 宁波朗迪叶轮机械有限公司 | Centrifugal fan blade |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3110205B2 (en) * | 1993-04-28 | 2000-11-20 | 株式会社日立製作所 | Centrifugal compressor and diffuser with blades |
| JP2007170331A (en) * | 2005-12-26 | 2007-07-05 | Daikin Ind Ltd | Turbofan and indoor unit of air conditioner using it |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1802512A (en) * | 2003-11-27 | 2006-07-12 | 大金工业株式会社 | Blade wheel for centrifugal blower and centerifugal blower with the same |
| CN202768478U (en) * | 2012-09-06 | 2013-03-06 | 宁波朗迪叶轮机械有限公司 | Centrifugation fan blade |
| CN202833296U (en) * | 2012-10-09 | 2013-03-27 | 宁波朗迪叶轮机械有限公司 | Oblique flow centrifuge blade |
| CN202833295U (en) * | 2012-10-09 | 2013-03-27 | 宁波朗迪叶轮机械有限公司 | Centrifugal fan blade |
| CN203175982U (en) * | 2013-04-03 | 2013-09-04 | 宁波朗迪叶轮机械有限公司 | Centrifugal fan blade |
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