CN105422506A - Backward centrifugal wind wheel - Google Patents
Backward centrifugal wind wheel Download PDFInfo
- Publication number
- CN105422506A CN105422506A CN201510965630.7A CN201510965630A CN105422506A CN 105422506 A CN105422506 A CN 105422506A CN 201510965630 A CN201510965630 A CN 201510965630A CN 105422506 A CN105422506 A CN 105422506A
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- wheel
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- outlet
- centrifugal wind
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
- F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a backward centrifugal wind wheel. The backward centrifugal wind wheel comprises a wheel cap, a wheel disc, and a plurality of blades connected between the wheel cap and the wheel disc radially and evenly in the same direction; an inlet section and an outlet section of the wheel cap both are straight lines, and the two straight lines are in circular-arc transition to each other; a section of the wheel disc is in an ''S'' curve shape, and a concave part of the ''S'' shape is close to an air inlet, while a convex part of the ''S'' shape is close to an air outlet; a molded line of each blade is composed of a straight stretch section and a forward swept distorted section, and the straight stretch section is close to the air inlet, while the forward swept distorted section is close to the air outlet; the concave part of the ''S'' shape is vertically connected with each stretch section, while the convex part of the ''S'' shape is connected with the forward swept distorted section of each blade; moreover, each distorted section is further connected with a straight section of the outlet section of the wheel cap. According to the backward centrifugal wind wheel, an optimized arrangement of a fluid flowing channel is carried out so as to reduce resistance to a fluid in a flowing process, thereby being conductive to the fluid flowing in and out; as a result, the efficiency and air quantity of an impeller can be improved more effectively.
Description
Technical field
The present invention relates to a kind of backward centrifugal wind wheel, be specifically related to a kind of backward centrifugal wind wheel with novel blade profile, wheel cap and wheel disc.
Background technique
Backward centrifugal impeller is product conventional in field of ventilation equipment, and current backward centrifugal wind wheel, comprises wheel cap, wheel disc and blade, and blade is evenly distributed between wheel cap and wheel disc, and wheel disc central position is motor installation position.Wheel cap center is intake grill, and the periphery of wheel cap and wheel disc constitutes exhaust outlet.
But the structure of current backward centrifugal wind wheel does not have applied fluid mechanics principle to be optimized mostly, the air quantity of impeller and the efficiency of impeller all comparatively low.
Summary of the invention
The technical problem to be solved in the present invention is: propose a kind of be conducive to fluid turnover and impeller adiabatic efficiency and all higher backward centrifugal wind wheel of impeller air quantity.
The present invention is the technological scheme solving the problems of the technologies described above proposition: a kind of backward centrifugal wind wheel, comprise wheel cap, wheel disc and radially and the multiple blades be evenly connected in the same way between described wheel cap and wheel disc, the center of described wheel cap is intake grill, described intake grill is the entrance of wheel cap, and the bottom circumference of described intake grill is connected with the peripheral part that a circle is positioned at outlet section; The central position of described wheel disc is motor installation position, the circumference of described motor installation position is connected with a circle peripheral part, forms exhaust outlet between described wheel cap and the peripheral part of wheel disc; Entrance and the outlet section of described wheel cap are straight line, are arc transition between two straight lines, and the cross section of described wheel disc is " S " type curved shape, and " S " type concave portion is near air inlet, and " S " type male portion is near exhaust outlet place; The molded line of described blade is made up of the distortion section of straight stretch section and sweepforward type, straight stretch section is near air inlet, the distortion section of sweepforward type is near exhaust outlet place, the part that described " S " type is recessed is connected with described stretch section is vertical, the convex part of described " S " type is connected with the distortion section of the sweepforward type of blade, and distortion section is also connected with the straightway of the outlet section of wheel cap.
Further, the described corner position D1 of " S " type is 0.6 to 0.8 with the number range of the ratio of shroud diameter D2.
Further, the straight line at described entrance place becomes obtuse angle with the straight line at described outlet section place, and described outlet section is identical with described corner position with the position, joint of described arc transition.
Further, described straight stretch section is identical with described corner position with the position, joint of the distortion section of sweepforward type.
Further, the torsional displacement L3 of the sweepforward distortion section of described outlet is less than L2/2, and the height of described blade is L2.
Further, the height of described wheel cap is L1, and the height of described blade is L2, described L1+16mm<L2.
The invention has the beneficial effects as follows:
The passage that the present invention is advanced by convection cell is optimized setting, and this optimal design-aside decreases the resistance of fluid in the process of carrying out, and is conducive to the turnover of fluid, can more effective raising impeller adiabatic efficiency and impeller air quantity.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, backward centrifugal wind wheel of the present invention is described further.
Fig. 1 is the plan view of backward centrifugal wind wheel in the present invention;
Fig. 2 is the front view of backward centrifugal wind wheel in the present invention;
Fig. 3 is the structure cut-away view of backward centrifugal wind wheel in Fig. 2;
Fig. 4 is the structural representation of blade shape.
Embodiment
Embodiment
According to Fig. 1-Fig. 4, the backward centrifugal wind wheel in the present invention, comprises wheel cap 1, wheel disc 2 and one group of blade 3.
Wherein, one group of blade 3 radially and be evenly connected in the same way between wheel cap 1 and wheel disc 2.
The intake grill that the center of wheel cap 1 is, intake grill is the entrance 1-1 of wheel cap 1, and the bottom circumference of intake grill is connected with the peripheral part that a circle is positioned at outlet section 1-2.Entrance 1-1 and the outlet section 1-2 of wheel cap 1 are straight line, are arc transition between two straight lines.
The central position of wheel disc 2 is motor 5 installation position, and the circumference of motor 5 installation position is connected with a circle peripheral part.Exhaust outlet is formed between the peripheral part of wheel cap 1 and the peripheral part of wheel disc 2.The cross section 6 of wheel disc 2 is " S " type curved shape, and " S " type concave portion 6-1 is near air inlet, and male portion 6-2 is near exhaust outlet place for " S " type.
The molded line of blade is made up of the distortion section 3-2 of straight stretch section 3-1 and sweepforward type, straight stretch section 3-1 is near air inlet, the distortion section 3-2 of sweepforward type is near exhaust outlet place, the part that " S " type is recessed is connected with stretch section 3-1 is vertical, the convex part of " S " type is connected with the distortion section 3-2 of the sweepforward type of blade, and distortion section 3-2 is also connected with the straightway of the outlet section 1-2 of wheel cap 1.
Can as preferably: the straight line at entrance 1-1 place becomes obtuse angle with the straight line at outlet section 1-2 place, and outlet section 1-2 is identical with corner position with the position, joint of arc transition.Further, the corner position D1 of " S " type is 0.6 to 0.8 with the number range of the ratio of wheel cap 1 diameter D2.
Can as preferably: straight stretch section 3-1 is identical with corner position with the position, joint of the distortion section 3-2 of sweepforward type.
Can as preferably: the torsional displacement L3 of the sweepforward distortion section 3-2 of outlet is less than L2/2, and the height of blade is L2.
Can as preferably: the height of wheel cap 1 is L1, and the height of blade is L2, L1+16mm<L2.
Of the present inventionly be not limited to above-described embodiment, the technological scheme of each embodiment above-mentioned of the present invention combined crosswise can form new technological scheme each other, and all employings are equal to the technological scheme of replacing and being formed in addition, all drop in the protection domain of application claims.
Claims (6)
1. a backward centrifugal wind wheel, comprises wheel cap, wheel disc and radially and the multiple blades be evenly connected in the same way between described wheel cap and wheel disc, it is characterized in that:
The center of described wheel cap is intake grill, and described intake grill is the entrance of wheel cap, and the bottom circumference of described intake grill is connected with the peripheral part that a circle is positioned at outlet section;
The central position of described wheel disc is motor installation position, the circumference of described motor installation position is connected with a circle peripheral part, forms exhaust outlet between the peripheral part of described wheel cap and the peripheral part of wheel disc;
Entrance and the outlet section of described wheel cap are straight line, are arc transition between two straight lines, and the cross section of described wheel disc is " S " type curved shape, and " S " type concave portion is near air inlet, and " S " type male portion is near exhaust outlet place;
The molded line of described blade is made up of the distortion section of straight stretch section and sweepforward type, straight stretch section is near air inlet, the distortion section of sweepforward type is near exhaust outlet place, the part that described " S " type is recessed is connected with described stretch section is vertical, the convex part of described " S " type is connected with the distortion section of the sweepforward type of blade, and distortion section is also connected with the straightway of the outlet section of wheel cap.
2. backward centrifugal wind wheel according to claim 1, is characterized in that: the corner position D1 of described " S " type is 0.6 to 0.8 with the number range of the ratio of shroud diameter D2.
3. backward centrifugal wind wheel according to claim 2, it is characterized in that: described entrance place is vertical straight line, the straight line at described entrance place becomes obtuse angle with the straight line at described outlet section place, and described outlet section is identical with described corner position with the position, joint of described arc transition.
4. backward centrifugal wind wheel according to claim 2, is characterized in that: described straight stretch section is identical with described corner position with the position, joint of the distortion section of sweepforward type.
5. backward centrifugal wind wheel according to claim 2, it is characterized in that: the torsional displacement L3 of the sweepforward distortion section of described outlet is less than L2/2, the height of described blade is L2.
6. the backward centrifugal impeller of efficient Wind Volume according to claim 4, it is characterized in that: the height of described wheel cap is L1, the height of described blade is L2, described L1+16mm<L2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510965630.7A CN105422506B (en) | 2015-12-22 | 2015-12-22 | A kind of backward centrifugal wind wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510965630.7A CN105422506B (en) | 2015-12-22 | 2015-12-22 | A kind of backward centrifugal wind wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105422506A true CN105422506A (en) | 2016-03-23 |
| CN105422506B CN105422506B (en) | 2017-09-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510965630.7A Active CN105422506B (en) | 2015-12-22 | 2015-12-22 | A kind of backward centrifugal wind wheel |
Country Status (1)
| Country | Link |
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| CN (1) | CN105422506B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368980A (en) * | 2016-04-14 | 2017-02-01 | 浙江亿利达风机股份有限公司 | Backward centrifugal wind wheel |
| CN113915162A (en) * | 2021-11-05 | 2022-01-11 | 泛仕达机电股份有限公司 | Efficiency-improving wheel disc for backward centrifugal fan and backward centrifugal fan |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1756908A (en) * | 2003-03-04 | 2006-04-05 | 施乐百有限公司 | Radial fan wheel, fan unit, and radial fan arrangement |
| US20060150928A1 (en) * | 2003-08-01 | 2006-07-13 | Hans-Georg Lehmann | Air supply device for an internal combustion engine |
| DE202009018770U1 (en) * | 2009-02-12 | 2013-03-07 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Radial or diagonal fan wheel |
| CN203272222U (en) * | 2013-05-29 | 2013-11-06 | 青蛙泵业有限公司 | Impeller of submersible pump for well |
| US20140023491A1 (en) * | 2012-07-17 | 2014-01-23 | Ruck Ventilatoren Gmbh | Diagonal fan |
| CN205298056U (en) * | 2015-12-22 | 2016-06-08 | 浙江亿利达风机股份有限公司 | Back is to centrifugal wind wheel |
-
2015
- 2015-12-22 CN CN201510965630.7A patent/CN105422506B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1756908A (en) * | 2003-03-04 | 2006-04-05 | 施乐百有限公司 | Radial fan wheel, fan unit, and radial fan arrangement |
| US20060150928A1 (en) * | 2003-08-01 | 2006-07-13 | Hans-Georg Lehmann | Air supply device for an internal combustion engine |
| DE202009018770U1 (en) * | 2009-02-12 | 2013-03-07 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Radial or diagonal fan wheel |
| US20140023491A1 (en) * | 2012-07-17 | 2014-01-23 | Ruck Ventilatoren Gmbh | Diagonal fan |
| CN203272222U (en) * | 2013-05-29 | 2013-11-06 | 青蛙泵业有限公司 | Impeller of submersible pump for well |
| CN205298056U (en) * | 2015-12-22 | 2016-06-08 | 浙江亿利达风机股份有限公司 | Back is to centrifugal wind wheel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368980A (en) * | 2016-04-14 | 2017-02-01 | 浙江亿利达风机股份有限公司 | Backward centrifugal wind wheel |
| CN113915162A (en) * | 2021-11-05 | 2022-01-11 | 泛仕达机电股份有限公司 | Efficiency-improving wheel disc for backward centrifugal fan and backward centrifugal fan |
| CN113915162B (en) * | 2021-11-05 | 2024-04-09 | 泛仕达机电股份有限公司 | Back centrifugal fan efficiency improving wheel disc and back centrifugal fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105422506B (en) | 2017-09-29 |
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