CN105697415A - Backward centrifugal wind wheel - Google Patents
Backward centrifugal wind wheel Download PDFInfo
- Publication number
- CN105697415A CN105697415A CN201610229611.2A CN201610229611A CN105697415A CN 105697415 A CN105697415 A CN 105697415A CN 201610229611 A CN201610229611 A CN 201610229611A CN 105697415 A CN105697415 A CN 105697415A
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- CN
- China
- Prior art keywords
- wheel
- section
- blade
- type
- wheel disc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
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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
- F04D29/30—Vanes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a backward centrifugal wind wheel which comprises a wheel cover, a wheel disc and multiple blades evenly and radially connected between the wheel cover and the wheel disc in the same direction. Each blade is provided with an upper reinforcing rib and a lower reinforcing rib. The blades are in contact with the wheel cover through the upper reinforcing ribs. The upper reinforcing ribs are perpendicular to the wheel cover. The blades are in contact with the wheel disc through the lower reinforcing ribs. The lower reinforcing ribs are perpendicular to the wheel disc. The included angle between the tangential direction of the extension line of the wheel cover and the horizontal direction is a1, the included angle between the tangential direction of the extension line of the wheel disc and the horizontal direction is a2, and a1 is much smaller than a 2. According to the backward centrifugal wind wheel, the reinforcing ribs are additionally arranged on the positions, connected with the wheel disc and the wheel cover, of the blades, and therefore the structural strength of the whole wind wheel can be improved, and an impeller is not likely to deform; and under the higher structural strength, the thinner wheel disc and wheel cover can be adopted, the overall weight of the wind wheel is reduced, and meanwhile the wind wheel is more economical.
Description
Technical field
The present invention relates to a kind of backward centrifugal wind wheel。
Background technology
Backward centrifugal impeller is product conventional in field of ventilation equipment, and current backward centrifugal wind wheel, including wheel cap, wheel disc and blade, blade is evenly distributed between wheel cap and wheel disc, and wheel disc center is motor installation position。Wheel cap center is air inlet, and the periphery of wheel cap and wheel disc constitutes air outlet。
But, current backward centrifugal wind wheel is not only heavy, and consumptive material is many, and cost is high, and structural strength is relatively low, causes that wheel cap, wheel disc and blade are easily deformed。
Summary of the invention
Present invention aim to address the technical problem that current backward centrifugal wind wheel structural strength is low。
For solving above-mentioned technical problem, the present invention provides a kind of backward centrifugal wind wheel, including wheel cap, wheel disc and radially and be uniformly connected to the multiple blades between described wheel cap and wheel disc in the same direction, the center of described wheel cap is air inlet, described air inlet is the entrance of described wheel cap, the bottom circumference of described air inlet is connected to a circle and is positioned at the peripheral part of outlet section；
The center of described wheel disc is motor installation position, the circumference of described motor installation position is connected to a circle peripheral part, air outlet is formed between peripheral part and the peripheral part of described wheel disc of described wheel cap, described blade has upper reinforcement and lower reinforcement, described blade is contacted with described wheel cap by described upper reinforcement, and described upper reinforcement is vertical with described wheel cap；Described blade is by described lower reinforcement and described sheave contact, and described lower reinforcement is vertical with described wheel disc；
The extended line tangential direction of described wheel cap and the angle of horizontal direction are а 1, and the extended line tangential direction of described wheel disc and the angle of horizontal direction are а 2, а 1 " а 2。
Further, а 2 < 60 °。
Further, the angle of the entrance extended line tangential direction of described blade and the rotation axis of described blade is β 1, and the angle of the outlet section extended line tangential direction of described blade and the rotation axis of described blade is β 2, β 1=β 2=0 °。
Further, 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 shaped form shape, and " S " type concave portion is near air inlet, and " S " type male portion is near air outlet place。
Further, the molded line of described blade is made up of the distortion section of straight stretch section and sweepforward type, and described straight stretch section is near air inlet, and the distortion section of described sweepforward type is near air outlet place；Part that described " S " type is recessed is vertical with described stretch section to be connected, and the convex part of described " S " type is connected with the distortion section of the sweepforward type of described blade, and described distortion section is also connected with the straightway of the outlet section of described wheel cap。
Further, the corner position D1 of described " S " type is 0.6 to 0.8 with the numerical range of the ratio of described shroud diameter D2。
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。
The invention has the beneficial effects as follows:
The present invention increases reinforcement by the position being attached with wheel disc and wheel cap on blade, it is possible to improving the structural strength of whole wind wheel, impeller is unlikely to deform；Under stronger structural strength, it is possible to adopt thinner wheel disc and wheel cap, the lighter overall weight of wind wheel, simultaneously also more economical。
Accompanying drawing explanation
Fig. 1 is blade construction schematic diagram；
Fig. 2 is wheeling disk structure schematic diagram；
Fig. 3 is the wheeling disk structure schematic diagram after simplifying from Fig. 2。
In figure, upper reinforcement 1；Blade 2；Lower reinforcement 3；Blade rotation axis 4；The extended line tangential direction 5 of blade inlet section；The extended line tangential direction 6 of blade exit section；Wheel cap 7；Wheel disc 8；Air flow inlet direction 9；Air stream outlet direction 10；Motor 11。
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described。
As depicted in figs. 1 and 2, backward centrifugal wind wheel in the present invention, including wheel cap 7, wheel disc 8 and radially and be uniformly connected to the multiple blades 2 between wheel cap and wheel disc in the same direction, the center of wheel cap 7 is air inlet, air inlet is the entrance of wheel cap 7, the bottom circumference of air inlet is connected to a circle and is positioned at the peripheral part of outlet section；The center of wheel disc 8 is motor installation position, the circumference of motor installation position is connected to a circle peripheral part, air outlet is formed between peripheral part and the peripheral part of wheel disc 8 of wheel cap 7, blade 2 has upper reinforcement 1 and lower reinforcement 3, blade 2 is contacted with wheel cap 7 by upper reinforcement 1, and upper reinforcement 1 is vertical with wheel cap 7；Blade 2 is contacted with wheel disc 8 by lower reinforcement 3, and lower reinforcement 3 is vertical with wheel disc 8；
As shown in Figure 3, the extended line tangential direction of wheel cap 7 and the angle of horizontal direction are а 1, and the extended line tangential direction of wheel disc 8 and the angle of horizontal direction are а 2, а 1 " а 2, namely a1 is much smaller than a2, can change the airflow direction (namely changing the angle c1 in Fig. 3) entering wind wheel；Preferably, а 2 < 60 °, it is ensured that have reasonable air quantity and wind wheel static pressure efficiency。As shown by the arrows in Figure 3, air-flow angle (or claiming arrow streamline angle) c1 from impeller eye side (i.e. air flow inlet direction 9 Fig. 3) to impeller outlet side (i.e. air stream outlet direction 10 in Fig. 3) is obtuse angle, а 2 is more big, and streamline angle c1 is more big for arrow, but а 2 should be less than 60 degree。
The entrance extended line tangential direction 5 of blade is β 1 with the angle of the rotation axis 4 of blade, and the outlet section extended line tangential direction 6 of blade is β 2, β 1=β 2=0 ° with the angle of the rotation axis 4 of blade。
Preferably, entrance and the outlet section of wheel cap 7 are straight line, are arc transition between two straight lines, and the cross section of wheel disc 8 is " S " type shaped form shape, and " S " type concave portion is near air inlet, and " S " type male portion is near air outlet place。
Preferably, the molded line of blade 2 is made up of the distortion section of straight stretch section and sweepforward type, and straight stretch section is near air inlet, and the distortion section of sweepforward type is near air outlet place；Part that " S " type is recessed is vertical with stretch section to be connected, and the convex part of " S " type is connected with the distortion section of the sweepforward type of blade 2, and distortion section is also connected with the straightway of the outlet section of wheel cap 7。
Preferably, the corner position D1 of " S " type is 0.6-0.8 with the numerical range of the ratio of the diameter D2 of wheel cap 7。
Preferably, the torsional displacement L3 of the sweepforward distortion section of outlet is less than the height that L2/2, L2 are blade 2。
The present invention is not limited to above-described embodiment, and the technical scheme of each embodiment above-mentioned of the present invention combined crosswise can form new technical scheme each other, and additionally all employings are equal to the technical scheme replacing formation, all fall within the protection domain of application claims。
Claims (7)
1. a backward centrifugal wind wheel, including wheel cap, wheel disc and radially and be uniformly connected to the multiple blades between described wheel cap and wheel disc in the same direction, the center of described wheel cap is air inlet, described air inlet is the entrance of described wheel cap, the bottom circumference of described air inlet is connected to a circle and is positioned at the peripheral part of outlet section；
The center of described wheel disc is motor installation position, is connected to a circle peripheral part in the circumference of described motor installation position, forms air outlet between peripheral part and the peripheral part of described wheel disc of described wheel cap, it is characterised in that:
Described blade has upper reinforcement and lower reinforcement, and described blade is contacted with described wheel cap by described upper reinforcement, and described upper reinforcement is vertical with described wheel cap；Described blade is by described lower reinforcement and described sheave contact, and described lower reinforcement is vertical with described wheel disc；
The extended line tangential direction of described wheel cap and the angle of horizontal direction are а 1, and the extended line tangential direction of described wheel disc and the angle of horizontal direction are а 2, а 1 " а 2。
2. backward centrifugal wind wheel according to claim 1, it is characterised in that: а 2 < 60 °。
3. backward centrifugal wind wheel according to claim 1, it is characterized in that: the angle of the entrance extended line tangential direction of described blade and the rotation axis of described blade is β 1, the angle of the outlet section extended line tangential direction of described blade and the rotation axis of described blade is β 2, β 1=β 2=0 °。
4. backward centrifugal wind wheel according to claim 1, it is characterized in that: entrance and the outlet section of described wheel cap are straight line, it it is arc transition between two straight lines, the cross section of described wheel disc is " S " type shaped form shape, " S " type concave portion is near air inlet, and " S " type male portion is near air outlet place。
5. backward centrifugal wind wheel according to claim 4, it is characterised in that: the molded line of described blade is made up of the distortion section of straight stretch section and sweepforward type, and described straight stretch section is near air inlet, and the distortion section of described sweepforward type is near air outlet place；Part that described " S " type is recessed is vertical with described stretch section to be connected, and the convex part of described " S " type is connected with the distortion section of the sweepforward type of described blade, and described distortion section is also connected with the straightway of the outlet section of described wheel cap。
6. backward centrifugal wind wheel according to claim 4, it is characterised in that: the corner position D1 of described " S " type is 0.6 to 0.8 with the numerical range of the ratio of described shroud diameter D2。
7. backward centrifugal wind wheel according to claim 5, it is characterised in that: 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。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610229611.2A CN105697415A (en) | 2016-04-14 | 2016-04-14 | Backward centrifugal wind wheel |
| CN201610917454.4A CN106368980A (en) | 2016-04-14 | 2016-10-21 | Backward centrifugal wind wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610229611.2A CN105697415A (en) | 2016-04-14 | 2016-04-14 | Backward centrifugal wind wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105697415A true CN105697415A (en) | 2016-06-22 |
Family
ID=56216070
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610229611.2A Pending CN105697415A (en) | 2016-04-14 | 2016-04-14 | Backward centrifugal wind wheel |
| CN201610917454.4A Pending CN106368980A (en) | 2016-04-14 | 2016-10-21 | Backward centrifugal wind wheel |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610917454.4A Pending CN106368980A (en) | 2016-04-14 | 2016-10-21 | Backward centrifugal wind wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN105697415A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321510A (en) * | 2016-08-31 | 2017-01-11 | 广东泛仕达机电有限公司 | Backward centrifugal impeller |
| CN115263815A (en) * | 2022-09-26 | 2022-11-01 | 西门子电机(中国)有限公司 | Motor fan cover |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4657810B2 (en) * | 2005-05-27 | 2011-03-23 | オリエンタルモーター株式会社 | Multi-blade impeller structure |
| CN203175982U (en) * | 2013-04-03 | 2013-09-04 | 宁波朗迪叶轮机械有限公司 | Centrifugal fan blade |
| CN204113731U (en) * | 2014-08-29 | 2015-01-21 | 中国神华煤制油化工有限公司鄂尔多斯煤制油分公司 | A kind of abrasion proof impeller |
| CN204591692U (en) * | 2015-04-14 | 2015-08-26 | 广东梅雁吉祥水电股份有限公司 | A kind of anti-plugging water pump |
| CN204729337U (en) * | 2015-04-15 | 2015-10-28 | 天津提爱思塑料制品有限公司 | A kind of Water-pump impeller of automobile |
| CN105422506B (en) * | 2015-12-22 | 2017-09-29 | 浙江亿利达风机股份有限公司 | A kind of backward centrifugal wind wheel |
-
2016
- 2016-04-14 CN CN201610229611.2A patent/CN105697415A/en active Pending
- 2016-10-21 CN CN201610917454.4A patent/CN106368980A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321510A (en) * | 2016-08-31 | 2017-01-11 | 广东泛仕达机电有限公司 | Backward centrifugal impeller |
| CN106321510B (en) * | 2016-08-31 | 2020-03-06 | 泛仕达机电股份有限公司 | Backward centrifugal impeller |
| CN115263815A (en) * | 2022-09-26 | 2022-11-01 | 西门子电机(中国)有限公司 | Motor fan cover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106368980A (en) | 2017-02-01 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160622 |