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

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...

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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

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