CN205503562U - Take centrifugal fan spiral case of water conservancy diversion structure - Google Patents
Take centrifugal fan spiral case of water conservancy diversion structure Download PDFInfo
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- CN205503562U CN205503562U CN201620088675.0U CN201620088675U CN205503562U CN 205503562 U CN205503562 U CN 205503562U CN 201620088675 U CN201620088675 U CN 201620088675U CN 205503562 U CN205503562 U CN 205503562U
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- deflector
- centrifugal blower
- coaming plate
- straightway
- guiding structure
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Abstract
Take centrifugal fan spiral case of water conservancy diversion structure, including bounding wall, two curb plates and flange, the bounding wall comprises straightway and segmental arc, is provided with the guide plate on the bounding wall, and specifically, the guide plate is installed on the straightway of bounding wall, can stabilize near the air current in centrifugal fan spiral case air outlet effectively, reduction airborne noise, improvement fan operation efficiency.
Description
Technical field
This utility model relates to range hood technical field, particularly relates to the centrifugal blower volute of band flow-guiding structure.
Background technology
In the prior art, centrifugal blower is divided into FC, backward type and radial centrifugal blower by wind wheel blade exit installation angle degree.In flow and wind speed round one timing, on the premise of reaching uniform pressure, the model of FC centrifugal blower is minimum, and therefore range hood is substantially and is assembled with FC centrifugal blower.But it is comparatively short that the shortcoming of FC centrifugal blower is exactly blade, gas through air inlet ring axially into wind wheel through wind wheel accelerate after, gas leaves after wind wheel due to runner sudden enlargement, flow velocity abrupt change, therefore the airflow stability being gathered in spiral case air outlet is poor, easily produce sinuous flow, reduce efficiency, and the biggest airborne noise can be produced.For overcoming the problems referred to above, centrifugal blower volute is improved.
Summary of the invention
Technical problem to be solved in the utility model is to provide for the centrifugal blower volute of band flow-guiding structure, and it can stablize the air-flow near centrifugal blower volute air outlet effectively, reduces airborne noise, improves fan operation efficiency.
The solved technical problem of this utility model the technical scheme is that the centrifugal blower volute of band flow-guiding structure, including coaming plate, two side plates and flange, it is provided with deflector on described coaming plate, it can stablize the air-flow near centrifugal blower volute air outlet effectively, reduce airborne noise, improve fan operation efficiency.
Further, described coaming plate also includes that straightway and segmental arc, described deflector are arranged on the straightway of described coaming plate.
Further, described deflector is identical with the length of the straightway on described coaming plate.
Further, deflector, is highly gradually increased to double-pointed direction by the first end points, and the second end points of described deflector is in the one end near spiral case air outlet.
Further, described deflector is perpendicular to described coaming plate.
Further, the height of described deflector is set as 20mm < h1 < h2 < h3, wherein h1 represents the height of deflector the first end points, and h2 represents the double-pointed height of deflector, and h3 represents the distance sum of deflector the first end points distance to spiral case straightway and the first end points to air inlet ring tangent line.
Further, the installation quantity of described deflector is 1 to 4 pieces.
Further, described deflector is equidistantly arranged on described straightway, and the distance between described side plate with closest one piece of deflector is identical with the distance between arbitrary adjacent two pieces of deflectors.
Further, described deflector is arranged on described coaming plate by screw, buckle or welding manner.
Accompanying drawing explanation
Fig. 1 is the centrifugal fan structure schematic diagram of this utility model embodiment.
Fig. 2 is the centrifugal blower side sectional view of this utility model embodiment.
Detailed description of the invention
Referring to Fig. 1, the present embodiment is the centrifugal blower volute of band flow-guiding structure, including 1, two side plates 2 of coaming plate and flange 4, coaming plate 1 is provided with deflector 3.Coaming plate 1 is made up of straightway 11 and segmental arc 12, and specifically, deflector 3 is arranged on the straightway 11 of coaming plate 1.It can stablize the air-flow near centrifugal blower volute air outlet effectively, reduces airborne noise, improves fan operation efficiency.
Specifically, referring to Fig. 2, deflector 3 is identical with the length of the straightway 11 on coaming plate 1, deflector 3 by the first end points 31 to the direction of 32, the second end, highly it is gradually increased, second end points 32 of deflector 3 is in the one end near spiral case air outlet, deflector 3 is perpendicular to coaming plate 1, the height of deflector 3 is set as 20mm < h1 < h2 < h3, wherein h1 is the height of the first end points 31 of deflector 3, h2 is the height of deflector 3 second end points 32, h3 is the distance sum of deflector 3 first end points 31 distance to spiral case straightway 11 and the first end points 31 to air inlet ring 22 tangent line, h1 can be 22mm, 30mm, 38mm, 50mm, 58mm, 60mm equidimension, preferably, h1 is 30mm, h2 is 50mm.Deflector 3 takes up space less, and can reach good guide functions, and deflector 3 is also easy to be arranged on coaming plate 1.
Further, the installation quantity of deflector 3 is 1 to 4 pieces, it can be 1 piece, 2 pieces, 3 pieces, 4 pieces, it is preferably 3 pieces, deflector 3 is equidistantly arranged on straightway 11, distance between side plate 2 with closest one piece of deflector 3 is identical with the distance between arbitrary adjacent two pieces of deflectors 3, makes gas flow uniform, improves drafting efficiency.Deflector 3 is arranged on coaming plate 1 by screw, buckle or welding manner.
When fan operation, air-flow enters centrifugal blower volute from air inlet, by the straightway 11 at spiral case coaming plate 1, several piece deflector is set, air-flow can be played guide functions, air-flow when the straightway 11 of spiral case coaming plate 1 by the Stabilization of deflector 3, make air-out uniform, thus reduce its noise produced, improve fan operation efficiency.
Claims (8)
1. the centrifugal blower volute of band flow-guiding structure, including coaming plate (1), two side plates (2) and flange (4), it is characterized in that being provided with on described coaming plate (1) deflector (3), deflector (3) is arranged on described coaming plate (1) by screw, buckle or welding manner.
The centrifugal blower volute of band flow-guiding structure the most according to claim 1, it is characterised in that described coaming plate (1) also includes that straightway (11) and segmental arc (12), described deflector (3) are arranged on the straightway (11) of described coaming plate (1).
The centrifugal blower volute of band flow-guiding structure the most according to claim 2, it is characterised in that described deflector (3) is identical with the length of the straightway (11) on described coaming plate (1).
The centrifugal blower volute of band flow-guiding structure the most according to claim 3, it is characterized in that described deflector (3) by the first end points (31) to the direction of the second end points (32), highly being gradually increased, second end points (32) of described deflector (3) is in the one end near spiral case air outlet.
The centrifugal blower volute of band flow-guiding structure the most according to claim 4, it is characterised in that described deflector (3) is perpendicular to described coaming plate (1).
The centrifugal blower volute of band flow-guiding structure the most according to claim 5, it is characterized in that the height of described deflector (3) is set as 20mm < h1 < h2 < h3, wherein h1 represents the height of deflector (3) first end points, h2 represents the double-pointed height of deflector (3), and h3 represents the distance sum of the deflector (3) first end points (31) distance to spiral case straightway (11) and the first end points (31) to air inlet ring (22) tangent line.
7. according to the centrifugal blower volute of the band flow-guiding structure described in any one of claim 2-6, it is characterised in that the installation quantity of described deflector (3) is 1 to 4 pieces.
The centrifugal blower volute of band flow-guiding structure the most according to claim 7, it is characterized in that described deflector (3) is the most equidistantly arranged at described straightway (11), the distance between described side plate (2) with closest one piece of deflector (3) is identical with the distance between arbitrary adjacent two pieces of deflectors (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620088675.0U CN205503562U (en) | 2016-01-29 | 2016-01-29 | Take centrifugal fan spiral case of water conservancy diversion structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620088675.0U CN205503562U (en) | 2016-01-29 | 2016-01-29 | Take centrifugal fan spiral case of water conservancy diversion structure |
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| CN205503562U true CN205503562U (en) | 2016-08-24 |
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| CN201620088675.0U Active CN205503562U (en) | 2016-01-29 | 2016-01-29 | Take centrifugal fan spiral case of water conservancy diversion structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131154A (en) * | 2017-04-28 | 2017-09-05 | 广东威灵电机制造有限公司 | Blower fan system and electric device |
| WO2018040015A1 (en) * | 2016-08-31 | 2018-03-08 | 广东泛仕达机电有限公司 | Volute housing and forward multi-blade centrifugal fan |
| CN107846823A (en) * | 2017-11-28 | 2018-03-27 | 北京京仪绿能电力系统工程有限公司 | A kind of inverter heat abstractor with air-duct clapboard |
| CN109779976A (en) * | 2016-12-27 | 2019-05-21 | 广东美的厨房电器制造有限公司 | Spiral case and range hood |
| CN112524091A (en) * | 2020-11-25 | 2021-03-19 | 江苏大学 | Centrifugal pump volute with flow distribution plate |
| CN115788957A (en) * | 2022-11-29 | 2023-03-14 | 广东顺威精密塑料股份有限公司 | Volute with vortex generator and multi-wing centrifugal fan using volute |
-
2016
- 2016-01-29 CN CN201620088675.0U patent/CN205503562U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018040015A1 (en) * | 2016-08-31 | 2018-03-08 | 广东泛仕达机电有限公司 | Volute housing and forward multi-blade centrifugal fan |
| CN109779976A (en) * | 2016-12-27 | 2019-05-21 | 广东美的厨房电器制造有限公司 | Spiral case and range hood |
| CN107131154A (en) * | 2017-04-28 | 2017-09-05 | 广东威灵电机制造有限公司 | Blower fan system and electric device |
| CN107846823A (en) * | 2017-11-28 | 2018-03-27 | 北京京仪绿能电力系统工程有限公司 | A kind of inverter heat abstractor with air-duct clapboard |
| CN112524091A (en) * | 2020-11-25 | 2021-03-19 | 江苏大学 | Centrifugal pump volute with flow distribution plate |
| CN115788957A (en) * | 2022-11-29 | 2023-03-14 | 广东顺威精密塑料股份有限公司 | Volute with vortex generator and multi-wing centrifugal fan using volute |
| CN115788957B (en) * | 2022-11-29 | 2023-05-30 | 广东顺威精密塑料股份有限公司 | Volute with vortex generator and multi-wing centrifugal fan using same |
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