Minor axis draught fan with motor being rear-mounted

Abstract

A minor axis draught fan with a motor being rear-mounted comprises a guide vane, an impeller, a bearing seat, a motor cooling air pipe, an explosion-proof motor, a diffuser and a motor cooling air inlet. The minor axis draught fan is characterized in that the explosion-proof motor is arranged at the air inlet, and the components of the explosion-proof motor, the bearing seat, the impellor, the guide vane and the diffuser are arranged sequentially; the motor cooling air pipe is arranged above the explosion-proof motor, the motor cooling air inlet is formed below the explosion-proof motor, the explosion-proof motor is connected with the impellor through the bearing seat, the impellor is aligned with the guide vane, and the guide vane is connected with the diffuser. The minor axis draught fanhas the beneficial effects that wind current flowing in a motor sealing cavity can be located in fresh wind current, flammable and combustible gas and polluted air under a well cannot enter the motorsealing cavity under the negative pressure condition, the explosion-proof safety is high, the cooling system is unblocked, the temperature of the motor is stable, and the operation safety coefficientof the draught fan is high.

Description

technical field [0001] The invention relates to a short-axis fan, in particular to a rear-mounted short-axis fan with a motor. Background technique [0002] The existing short-axis fan has difficulty in cooling the secondary fan. During operation, the motor bearing temperature is always at a high temperature stage. The air flow flowing in the motor sealing cavity cannot be in the fresh air flow. Entering the sealed cavity of the motor, the safety factor is low. Contents of the invention [0003] The object of the present invention is to provide a short-axis fan with a rear motor in order to overcome the deficiencies of the prior art. [0004] In order to realize the above object, the technical scheme adopted by the present invention is: [0005] A motor rear-mounted short-axis fan, including guide vanes, impellers, bearing housings, motor cooling air ducts, explosion-proof motors, diffusers, and motor cooling air inlets. Explosion-proof motor, bearing seat, impeller, gu...

AI Technical Summary

Problems solved by technology

[0002] The existing short-axis fan has difficulty in cooling the secondary fan. During operation, the motor bearing temperature is always at a high temperature stage. The air flow flowing in the motor sealing cavity cannot be in the fresh air flow. Entering the sealed cavity of the motor, the safety factor is low

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