CN103195751B - BI centrifugation blade - Google Patents
BI centrifugation blade Download PDFInfo
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- CN103195751B CN103195751B CN201310114086.6A CN201310114086A CN103195751B CN 103195751 B CN103195751 B CN 103195751B CN 201310114086 A CN201310114086 A CN 201310114086A CN 103195751 B CN103195751 B CN 103195751B
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Abstract
The present invention relates to field of ventilation equipment.BI centrifugation blade, comprises circular leaf base plate, blade and baffle liner, and described blade is 9; The air intake angle of blade is not more than 10 °, and the air-out angle angle of blade is between 25 °-35 °; 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 length accounts for the 25%-35% of vane tip length; Air-admitting surface between arbitrary neighborhood blade is the 62%-65% of corresponding exhaust outlet area; The width of baffle liner is the 45%-55% of baffle liner height, and the height of baffle liner is the 60%-70% of blade exhaust outlet height.The advantage of this BI 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
BI centrifugation blade is product conventional in field of ventilation equipment, BI centrifugation blade comprises circular leaf base plate, blade and baffle liner, blade is fixed between circular leaf base plate and baffle liner, and during use, motor shaft drives fan blade to rotate through the axis hole on circular leaf base plate.The usability of BI 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 BI centrifugation blade relates to is a lot, the shape of such as leaf base plate, blade and baffle liner, size and Placement etc.Very reasonably BI 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 BI centrifugation blade that noise is low of air quantity.
In order to realize above-mentioned object, present invention employs following technological scheme:
BI centrifugation blade, comprises circular leaf base plate, blade and baffle liner, and blade is fixed between circular leaf base plate and baffle liner, arranges material-saving die cavity in blade, and described blade is 9, and blade is regularly arranged along the circumference end face of circular leaf base plate; Institute's vaned air intake angle angle is identical, and the air intake angle of blade is not more than 10 °, and institute's vaned air-out angle angle is identical, and the air-out angle angle of blade is between 25 °-35 °; The inner of blade and outer end form blade inner circle and blade cylindrical respectively, and in blade, diameter of a circle is the outer diameter of a circle 40%-45% of blade; Blade top is made up of the connection area be connected as a single entity and disconnected district, connection area and the baffle liner of blade are fixed by ultrasonic welding, disconnected district is in the air intake direction inside blade, connection area is in the outside in disconnected district, the tie point in connection area and disconnected district is highest point and the summit of blade, and connection area length accounts for the 25%-35% of vane tip length; Air-admitting surface between arbitrary neighborhood blade is the 62%-65% of corresponding exhaust outlet area; The width of baffle liner is the 45%-55% of baffle liner height, and the height of baffle liner is the 60%-70% of blade exhaust outlet height.
As preferably, the outer ledge of baffle liner is provided with the flange be connected as a single entity with it, and the height of flange is the 18%-23% of baffle liner height, improves the intensity of baffle liner.
As preferably, the air intake angle of blade is 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 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; Guide face on baffle liner is curved, and its radius of the radian value is between 100-110mm.The baffle liner of said structure is adopted to reduce noise.
As preferably, in blade, circular diameter is 120.5mm, and blade outside diameter is 283.7mm; The height of baffle liner is 57.2mm, and width is 28.6mm; The height of blade exhaust outlet is 87.8mm; The height of flange is 12.5mm; Connection area length is 43.1mm, and vane tip length is 144.6mm.Further, the air intake angle of blade is 5.6 °, and institute's vaned air-out angle angle is 30 °.Adopt the BI centrifugation blade utilization efficiency of above-mentioned parameter best, air quantity is maximum and noise is minimum.
Have employed the BI centrifugation blade of above-mentioned technological scheme, blade is 9, the air-out angle angle of blade is identical and be not more than 10 °, the air-out angle angle of blade is identical and between 25 °-35 °, the inner of blade and outer end form blade inner circle and blade cylindrical respectively, in blade, diameter of a circle is the outer diameter of a circle 40%-45% of blade, and the efficiency of air inlet/outlet is high.Disconnected district is in the air intake direction inside blade, increases incoming air area, and air quantity increases.The tie point in connection area and disconnected district is highest point and the summit of blade, and connection area length accounts for the 25%-35% of vane tip length, can ensure the join strength of blade and baffle liner, can promote again the air quantity of more than 3%.Air-admitting surface between arbitrary neighborhood blade is the 62%-65% of corresponding exhaust outlet area, and obtain good static pressure, air intake efficiency at least improves 3%.The width of baffle liner is the 45%-55% of baffle liner height, and the height of baffle liner is the 60%-70% of blade exhaust outlet height, and noise reduction is well controlled.The advantage of this BI centrifugation blade is novel structure, and air quantity is large and noise is low.
Accompanying drawing explanation
Fig. 1: the structural representation of embodiments of the invention.
Fig. 2: the schematic diagram in the embodiment of the present invention bottom BI centrifugation blade.
Fig. 3: the structural representation of circular leaf base plate and blade in the embodiment of the present invention.
Fig. 4: the close-up schematic view of baffle liner in the embodiment of the present invention.
Embodiment
Below in conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the specific embodiment of the present invention is made a detailed explanation.
BI centrifugation blade as shown in Figure 1, Figure 2, Figure 3 and Figure 4, comprise circular leaf base plate 1, blade 3 and baffle liner 4, blade 3 is fixed between circular leaf base plate 1 and baffle liner 4, material-saving die cavity 31 is set in blade 3, blade 3 is 9, and blade 3 is regularly arranged along the circumference end face of circular leaf base plate 1.The middle part of circular leaf base plate 1 arranges axis hole 2, and during use, motor shaft drives fan blade to rotate through the axis hole 2 on circular leaf base plate 1.
The air intake angle a angle of all blades 3 is identical, the air intake angle a of blade is not more than 10 °, the air-out angle b angle of all blades 3 is identical, the air-out angle b angle of blade is between 25 °-35 °, the air intake angle a of blade is 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 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.
The inner of blade 3 and outer end form blade inner circle and blade cylindrical respectively, and in blade, diameter of a circle is the outer diameter of a circle 40%-45% of blade.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 3 are fixed by ultrasonic welding, disconnected district 33 is in the air intake direction inside blade 3, connection area 32 is in the outside in disconnected district 33, the tie point in connection area 32 and disconnected district 33 is highest point and the summit of blade 3, connection area 32 length accounts for the 25%-35% of blade 3 top length, can ensure the intensity of the connection of blade 3 and baffle liner 4, can promote again the air quantity of about 2%.Intake grill 51 area between arbitrary neighborhood blade 3 is the 62%-65% of corresponding exhaust outlet 52 area, and can obtain best static pressure, air intake efficiency at least improves 5%.The width 4L of baffle liner 4 is 45%-55% of baffle liner 4 height 4H, and the height 4H of baffle liner is the 60%-70% of blade exhaust outlet 52 height, and the guide face on baffle liner 4 is curved, and its radius of the radian value is between 100-110mm.The outer ledge of baffle liner 4 is provided with the flange 41 be connected as a single entity with it, and the height 41H of flange 41 is 18%-23% of baffle liner height 4H, well controls noise.
The parameter of above-mentioned BI centrifugation blade the best is as follows, and the air intake angle a of blade is 5.6 °, and the air-out angle b angle of blade is 30 °.In blade, circular diameter is 120.5mm, and blade outside diameter is 283.7mm.The height 4H of baffle liner is 57.2mm, and the width 4L of baffle liner is 28.6mm.The height of blade exhaust outlet 52 is 87.8mm.The height of flange 41 is 12.5mm, and connection area 32 length is 43.1mm, and blade 3 top length is 144.6mm.Adopt the BI centrifugation blade utilization efficiency of above-mentioned parameter best, air quantity is maximum and noise is minimum.
Adopt the BI 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 2000 cubic metres per hour, noise is generally 45 decibels, adopt its air quantity of centrifugation blade of above-mentioned parameter be 2100 cubic metres per hour, noise is 41 decibels, and namely air quantity is large and noise is low.
Claims (3)
1. BI centrifugation blade, comprises circular leaf base plate, blade and baffle liner, and blade is fixed between circular leaf base plate and baffle liner, arranges material-saving die cavity in blade, and it is characterized in that described blade is 9, blade is regularly arranged along the circumference end face of circular leaf base plate; Institute's vaned air intake angle angle is identical, and the air intake angle of blade is not more than 10 °, and institute's vaned air-out angle angle is identical, and the air-out angle angle of blade is between 25 °-35 °; The inner of blade and outer end form blade inner circle and blade cylindrical respectively, and in blade, diameter of a circle is the 40%-45% of the outer diameter of a circle of blade; Blade top is made up of the connection area be connected as a single entity and disconnected district, connection area and the baffle liner of blade are fixed by ultrasonic welding, disconnected district is in the air intake direction inside blade, connection area is in the outside in disconnected district, the tie point in connection area and disconnected district is highest point and the summit of blade, and connection area length accounts for the 25%-35% of vane tip length; Air-admitting surface between arbitrary neighborhood blade is the 62%-65% of corresponding exhaust outlet area; The width of baffle liner is the 45%-55% of baffle liner height, and the height of baffle liner is the 60%-70% of blade exhaust outlet height; The outer ledge of baffle liner is provided with the flange be connected as a single entity with it, and the height of flange is the 18%-23% of baffle liner height; The air intake angle of blade is 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 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; Guide face on baffle liner is curved, and its radius of the radian value is between 100-110mm.
2. BI centrifugation blade according to claim 1, it is characterized in that in blade, circular diameter is 120.5mm, blade outside diameter is 283.7mm; The height of baffle liner is 57.2mm, and width is 28.6mm; The height of blade exhaust outlet is 87.8mm; The height of flange is 12.5mm; Connection area length is 43.1mm, and vane tip length is 144.6mm.
3. BI centrifugation blade according to claim 1, is characterized in that the air intake angle of described blade is 5.6 °, and institute's vaned air-out angle angle is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114086.6A CN103195751B (en) | 2013-04-03 | 2013-04-03 | BI centrifugation blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114086.6A CN103195751B (en) | 2013-04-03 | 2013-04-03 | BI centrifugation blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103195751A CN103195751A (en) | 2013-07-10 |
| CN103195751B true CN103195751B (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310114086.6A Active CN103195751B (en) | 2013-04-03 | 2013-04-03 | BI centrifugation blade |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010133254A (en) * | 2008-12-02 | 2010-06-17 | Daikin Ind Ltd | Centrifugal blower, and air conditioner provided with the same |
| CN101960150A (en) * | 2008-04-18 | 2011-01-26 | 三菱电机株式会社 | Turbofan and air conditioner |
| JP2011149367A (en) * | 2010-01-22 | 2011-08-04 | Mitsubishi Electric Corp | Turbo fan, and air conditioner equipped therewith |
| CN102459917A (en) * | 2009-06-11 | 2012-05-16 | 三菱电机株式会社 | Turbofan and air conditioner |
| CN203175975U (en) * | 2013-04-03 | 2013-09-04 | 宁波朗迪叶轮机械有限公司 | Backward-style centrifugal fan blade |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100847523B1 (en) * | 2006-12-29 | 2008-07-22 | 엘지전자 주식회사 | Turbo fan |
-
2013
- 2013-04-03 CN CN201310114086.6A patent/CN103195751B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101960150A (en) * | 2008-04-18 | 2011-01-26 | 三菱电机株式会社 | Turbofan and air conditioner |
| JP2010133254A (en) * | 2008-12-02 | 2010-06-17 | Daikin Ind Ltd | Centrifugal blower, and air conditioner provided with the same |
| CN102459917A (en) * | 2009-06-11 | 2012-05-16 | 三菱电机株式会社 | Turbofan and air conditioner |
| JP2011149367A (en) * | 2010-01-22 | 2011-08-04 | Mitsubishi Electric Corp | Turbo fan, and air conditioner equipped therewith |
| CN203175975U (en) * | 2013-04-03 | 2013-09-04 | 宁波朗迪叶轮机械有限公司 | Backward-style centrifugal fan blade |
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| Publication number | Publication date |
|---|---|
| CN103195751A (en) | 2013-07-10 |
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