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High full-voltage large-flow centrifugal blower with slant-wheel disk front-bent impeller

A centrifugal fan and large flow technology, applied in mechanical equipment, radial flow pumps, machines/engines, etc., can solve problems such as low operating efficiency and high energy consumption, and achieve reduced flow loss, reduced noise, and reasonable design Effect

Inactive Publication Date: 2010-09-01
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in this patent is to provide a centrifugal fan with a high total pressure and large flow rate inclined disc impeller, which can overcome the low operating efficiency and energy efficiency of traditional fans at the large flow point when providing high total pressure and large flow rate. In order to further improve the aerodynamic efficiency, device efficiency and use efficiency of the fan to reduce the proportion of the power consumed by it in the auxiliary power of the locomotive and improve the overall operating efficiency of the locomotive

Method used

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  • High full-voltage large-flow centrifugal blower with slant-wheel disk front-bent impeller

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Embodiment Construction

[0017] The specific implementation manner of this patent is described in detail below in conjunction with technical scheme and accompanying drawing.

[0018] Such as figure 1 , figure 2 As shown, a high total pressure and large flow inclined wheel disk forward curved impeller centrifugal fan of this patent consists of a motor 1, a bracket 2, a rear side plate 3, an impeller 4, an exhaust volute 5, a front side plate 6, and a cone arc Shaped inlet guide pipe 7, protective net 8 and inlet guide cover 9 are formed. Wherein the impeller 4 adopts a slanted wheel disc, and a conical inlet shroud 9 is installed at the wheel hub, and compared with the traditional forward curved impeller of the same type that mostly adopts many short blades, the impeller 4 in this patent adopts 36 arc-shaped long blades. The number of blades is obviously reduced by about half, and the inlet side of the blades has a relatively large extension to the inlet of the impeller 4. The exhaust volute 5 is in...

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Abstract

The invention discloses a high full-voltage large-flow centrifugal blower with a slant-wheel disk front-bent impeller, and belongs to the technical field of blowers. The high full-voltage large-flow centrifugal blower is characterized in that: the high full-voltage large-flow centrifugal blower consists of a motor, a support, a rear side plate, the impeller, an exhaust volute, a front side plate, a conical arc inlet guide pipe, a protective screen and an inlet fairing, wherein the impeller has the slant wheel disk structure; the slant wheel disk is that the wheel disk is not vertical to a motor shaft in a front view; the inlet fairing is arranged on a hub; the impeller adopts 36 circular arc long blades; the mold line of the exhaust volute adopts a logarithmic spiral form; the front side plate is provided with a large hole; and the rear side plate is provided with a small hole. The centrifugal blower meets the running requirements of a cooling fan on high full-voltage and large flow; the special slant wheel disk also improves the air flowing condition inside a ventilator, so the flow loss and noise are all reduced; and compared with the traditional similar ventilators, the centrifugal blower has the advantage of simpler processing and manufacturing due to a small number of the blades of the impeller.

Description

technical field [0001] This patent belongs to the technical field of fans, and relates to a cooling and ventilation of locomotive traction motors and related equipment, in particular to a centrifugal fan with high total pressure and large flow with inclined wheel discs and forward curved impellers. Background technique [0002] Centrifugal fans are widely used in ventilation, dust removal and cooling of vehicles, ships, factories, mines, tunnels, cooling towers and buildings. It is mainly composed of the impeller and the casing. The impeller is the main part of the centrifugal fan. Its geometric shape, size, number of blades and manufacturing precision have a great influence on the performance. Generally, centrifugal fans have the characteristics of high total pressure coefficient and large flow coefficient. [0003] However, the space inside the locomotive is quite limited, and the requirements for the centrifugal fan are higher. While providing high total pressure and lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D17/08F04D29/30F04D29/44
Inventor 王晓放戚光鑫王宗伟吴联军谢蓉
Owner DALIAN UNIV OF TECH
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