CN102927044A - Special-shaped fan blade - Google Patents
Special-shaped fan blade Download PDFInfo
- Publication number
- CN102927044A CN102927044A CN2012104968987A CN201210496898A CN102927044A CN 102927044 A CN102927044 A CN 102927044A CN 2012104968987 A CN2012104968987 A CN 2012104968987A CN 201210496898 A CN201210496898 A CN 201210496898A CN 102927044 A CN102927044 A CN 102927044A
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- special
- fan blade
- blower
- blade
- shaped fan
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Abstract
The invention provides a special-shaped fan blade. The technical scheme is as follows: a shape large in top and bottom and small in middle is formed on the metal sheets in a pressing way; upper mounting pins, upper radian displacement angles, lower mounting pins and lower radian displacement angles are respectively arranged on two ends of the blade, and the shapes of the two ends and the shape of the small middle form a shape meeting the shape under the wind fluidics, and the special-shaped fan blade can be formed according to the angle and the radian displacement; after the blade is combined with a main ring and a positioning ring to form an integral wind wheel, the blade is connected with an internal hole of the main ring by a motor output shaft and then is arranged in wind inlet spiral casings at two ends; and relatively high airflows are formed at both ends of the wind wheel under driving of the motor through rotating, therefore, strong induced air can be generated at two ends of the spiral casing, a smoke exhaust ventilator installed with a centrifugal fan with the special-shaped fan blade can realize powerful smoke absorption and smoke discharging effects, and the purpose of the special-shaped fan blade is achieved.
Description
Technical field
The present invention relates to special-shaped impeller of blower, particularly, but also not exclusively say, the present invention relates to the centrifugal fan fan blade, as be installed in centrifugal fan indication fan blade above the range hood.
Background technique
Centrifugal fan is to be installed at present most critical parts above the range hood, and disclosing at present various centrifugal fans has motor, spiral case, receded disk impeller to combine.
Common this centrifugal impeller structure combination is comprised of main circle, the identical long strip blade of some shapes and positioning ring.
Main circle center hole is connected with motor output shaft, and long strip blade one end is connected with main circle outer ring, and the other end is connected with positioning ring.
Above-mentioned long strip blade integral is pressed into certain radian, and there is several angle to be installed in main circle with above the fixed circle, form centrifugal impeller whole and be installed in the spiral case inboard after motor output shaft is connected, electric machine rotation drives centrifugation blade and presses the certain orientation rotation, oil smoke is inhaled in the middle of the impeller, the impeller of pressing the certain orientation High Rotation Speed produces centrifugal force, under the effect of centrifugal force, the oil smoke that enters the impeller inner ring is thrown out of the impeller outer ring, pass through radial shift, oil smoke is excluded from the spiral case exhaust outlet, reach the purpose of certain pump drainage oil smoke.
Equal to suck in the centrifugal impeller air quantity according to the air quantity in spiral case outlet port in theory, but in fact the airflow pressure of entry port and spiral case exhaust outlet is not equal in the middle of the centrifugal impeller, reason is that the airflow pressure of exhaust outlet is through the peculiar radial variation size of spiral case inner ring and centrifugal impeller outer ring, make air through the compression in fan blade on the wind wheel and gap, spiral case outlet port, just make the spiral case outlet port that the Air blowing of certain pressure is arranged.
But owing to using at present the defective of fan blade above the centrifugal wind wheel, not through the up and down little arc displacement in large centre, make the air in the centrifugal impeller that the larger variation of flowability not occur, thereby make the scroll casing type centrifugal blower that is installed at present above the range hood, when exhaust air rate reaches or exceed industry standard, and suction oil smoke effect is unsatisfactory.
In order to increase blower fan suction air quantity, producer attempts to increase blower fan air draft suction ability by the simultaneously perforate of spiral case two ends, but in fact the intake grill increase does not make blower fan suction ability increase.
Summary of the invention
Technical problem to be solved by this invention is for this reason, overcome existing scroll casing type centrifugal blower, the single shape of fan blade not through the up and down little arc displacement in large centre, spiral case two ends air intake does not increase the suction effect, make the poor technological deficiency of scroll casing type assembling smoking effect on range hood of prior art, provide a kind of two ends large, the middle little and special-shaped impeller of blower by the displacement of roman radian improves two ends air intake spiral case blower fan suction effect greatly
In order to realize technical purpose of the present invention, a kind of technological scheme that increases the employing of centrifugal fan suction air quantity fan blade: be included in and be pressed into the up and down little special-shaped impeller of blower in large centre on the tinsel.
Described fan blade two ends are respectively upper installation foot, upper radian deflection angle, lower installation foot, and lower radian deflection angle, diminishing with the centre forms the fluidics shape close mutually wind, by angle and radian displacement, forms special-shaped impeller of blower.
After described fan blade is combined to form wind wheel integral body with main circle, positioning ring, after being connected, endoporus is installed in the air intake spiral case of two ends with main the circle by motor output shaft, under electric machine rotation drives, there is larger Air Flow at the wind wheel two ends, making the spiral case two ends form strong air introduces, with the range hood that fan blade centrifugal fan of the present invention is housed strong smoking and smoke discharging effect are arranged, reach purpose of the present invention.
Making of the present invention is such with working principle: become special-shaped fan blade shape of the present invention with sheet metal direct pressing on the die pressure machine, then special-shaped fan blade two ends installation foot encloses the outer end with the master respectively, positioning ring is connected to form a wind wheel integral body, the wind wheel master enclose center hole by be installed in the air intake spiral case of two ends after motor output shaft is connected, electrical power rotates to drive the rotation of present technique special-shaped fan blade wind wheel is housed, make the wind wheel two ends that larger Air Flow be arranged, the spiral case two ends form strong air and introduce, and using special-shaped fan blade centrifugal fan of the present invention to be installed in has strong smoking and smoke discharging effect above the smoke extractor.
Description of drawings
Special-shaped fan blade shape view shown in Figure 1:
Special-shaped fan blade shown in Figure 2 is installed shaping wind wheel view:
Embodiment
Fig. 1 be pressed at tinsel large up and down, middle little special-shaped impeller of blower 5 shape views, special-shaped impeller of blower 5 comprises, upper installation foot 4, upper radian deflection angle 3, lower installation foot 1, lower radian deflection angle 2, diminishing with the centre forms the fluidics shape that meets wind.
Fig. 2 is that special-shaped impeller of blower 5 is combined to form wind wheel integral body with main circle 7 positioning rings 6, can be installed in the air intake spiral case of two ends after endoporus 8 is connected with main the circle by motor output shaft.
Claims (3)
1. the technological scheme of a special-shaped impeller of blower: be included in and be pressed into the up and down little special-shaped impeller of blower (5) in large centre on the tinsel.
2. according to the described special-shaped impeller of blower of claim, be further characterized in that, special-shaped impeller of blower comprises above (5), upper installation foot (4), upper radian deflection angle (3), lower installation foot (1), lower radian deflection angle (2), diminishing with the centre forms the fluidics shape meet wind.
3. according to the described special-shaped impeller of blower of claim, be further characterized in that, after special-shaped impeller of blower (5) is combined to form wind wheel integral body with main circle (7) positioning ring (6), can after being connected, endoporus (8) can be installed in the volute of blower the inside with main the circle by motor output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104968987A CN102927044A (en) | 2012-11-29 | 2012-11-29 | Special-shaped fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104968987A CN102927044A (en) | 2012-11-29 | 2012-11-29 | Special-shaped fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102927044A true CN102927044A (en) | 2013-02-13 |
Family
ID=47641939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104968987A Pending CN102927044A (en) | 2012-11-29 | 2012-11-29 | Special-shaped fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102927044A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104797825A (en) * | 2013-05-10 | 2015-07-22 | Lg电子株式会社 | Method for producing centrifugal fan |
| US9995311B2 (en) | 2013-05-10 | 2018-06-12 | Lg Electronics Inc. | Centrifugal fan |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2536818Y (en) * | 2002-03-16 | 2003-02-19 | 杨金星 | Centrifugal fan impeller blade |
| CN201037475Y (en) * | 2007-05-08 | 2008-03-19 | 金家宝工业有限公司 | Fan blade structure |
| EP1688623B1 (en) * | 2003-11-27 | 2008-11-05 | Daikin Industries, Ltd. | Blade wheel for centrifugal blower and centerifugal blower with the same |
| CN202040116U (en) * | 2011-03-24 | 2011-11-16 | 朱红火 | Aerofoil type blade and centrifugal wind wheel |
-
2012
- 2012-11-29 CN CN2012104968987A patent/CN102927044A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2536818Y (en) * | 2002-03-16 | 2003-02-19 | 杨金星 | Centrifugal fan impeller blade |
| EP1688623B1 (en) * | 2003-11-27 | 2008-11-05 | Daikin Industries, Ltd. | Blade wheel for centrifugal blower and centerifugal blower with the same |
| CN201037475Y (en) * | 2007-05-08 | 2008-03-19 | 金家宝工业有限公司 | Fan blade structure |
| CN202040116U (en) * | 2011-03-24 | 2011-11-16 | 朱红火 | Aerofoil type blade and centrifugal wind wheel |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104797825A (en) * | 2013-05-10 | 2015-07-22 | Lg电子株式会社 | Method for producing centrifugal fan |
| CN104797825B (en) * | 2013-05-10 | 2017-06-30 | Lg电子株式会社 | The manufacture method of centrifugal fan |
| US9995311B2 (en) | 2013-05-10 | 2018-06-12 | Lg Electronics Inc. | Centrifugal fan |
| US10662968B2 (en) | 2013-05-10 | 2020-05-26 | Lg Electronics Inc. | Method of manufacturing centrifugal fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |