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Fire-fighting centrifugal fan

A centrifugal fan and firefighting technology, which is used in mechanical equipment, machines/engines, liquid fuel engines, etc., can solve the problems of short continuous running time and poor working stability, and achieve the effect of good working stability and low noise.

Inactive Publication Date: 2011-05-25
黄山市大华消防空调设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a centrifugal fan for fire-fighting, which solves the problems of poor working stability and short continuous running time of the existing centrifugal fans for fire-fighting

Method used

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Embodiment 1

[0012] Example 1, such as figure 1 and figure 2 As shown, a centrifugal fan for fire fighting includes a box body 1 provided with an air inlet and an air outlet, the box body 1 is fixedly provided with a motor 2, and the box body 1 is provided with a volute 5. A bearing seat 9 is fixedly arranged in the volute, and the bearing seat is hinged with an impeller shaft 8 through a bearing, and the motor drives the impeller shaft 8 in the volute through a V-belt 3 to drive the impeller 6 to rotate, and the impeller 6 24 impeller blades 7 are evenly distributed on the inner circumference to form a multi-wing forward curved blade structure. In order to increase the smoke exhaust air volume, the impeller blade 7 is a forward curved blade structure. The box body 1 is a composite panel structure, and a heat insulation layer 4 is arranged in the middle of the composite panel. Further, the material of the volute is galvanized steel plate.

[0013] In the present invention, the motor o...

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Abstract

The invention discloses a fire-fighting centrifugal fan, which comprises a box body with an air inlet and an air outlet, wherein a scroll case is arranged in the box body; a motor is fixedly arranged on the box body; the motor drives an impeller in the scroll case to rotate by a triangle belt; impeller blades are distributed on the inner circumference of the impeller uniformly; the box body has a duplex plate structure; and a heat-insulating layer is arranged in a duplex plate. The fire-fighting centrifugal fan has high operating stability, and can run continuously at the high temperature of 300 DEG C for over 60 minutes.

Description

technical field [0001] The invention relates to a centrifugal fan, in particular to a centrifugal fan for fire protection. Background technique [0002] At present, there are many problems of fire and smoke exhaust systems in buildings, especially the quality of fire and smoke exhaust systems in high-rise buildings is very important. Many fires have serious consequences due to poor smoke exhaust systems. Many high-rise buildings are equipped with fire and smoke exhaust systems to discharge a large amount of toxic smoke generated by fire combustion. In the fire and smoke exhaust system, the smoke exhaust fan is its core component, and the stability of the work determines the quality of the entire system. Most of the existing fire-fighting smoke exhaust fans have poor working stability and short continuous operation time due to the temperature of the combustion flue gas reaching 200-300°C, so they cannot achieve a good smoke exhaust effect. For example, Chinese patent 022928...

Claims

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Application Information

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IPC IPC(8): F04D29/42F04D29/58F04D29/28F04D29/02
Inventor 汪昌国汪国娟汪慧婷李志斌丁炜方彬燕
Owner 黄山市大华消防空调设备有限公司
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