Contra-rotating impeller ventilation equipment driven by long shaft

Abstract

The invention discloses contra-rotating impeller ventilation equipment driven by a long shaft. An electric motor and a transmission gearbox of the electric motor are arranged outside an air duct in an extending manner through a thin shaft arranged in the long shaft, and the electric motor and the transmission gearbox of the electric motor are connected with a first-stage impeller and a second-stage impeller which are arranged in the air duct through the thin shaft and the long shaft; according to a contra-rotating impeller ventilation structure, the ventilation equipment is arranged inside and outside the air duct through a transmission shaft, so that maintenance and operation are convenient; and the axial distances of the impellers are arranged in an extending manner, and due to the fact that a hub is not affected by an internally-arranged motor, the ventilation resistance is reduced; under the condition that the air pressure requirement is met, switching between single-stage rotating and contra-rotating of the impellers can be achieved; and the energy consumption is further reduced, power configuration under the different working conditions is achieved, and the contra-rotating impeller ventilation performance is improved.

Description

technical field [0001] The invention relates to a counter-rotating impeller ventilation device, in particular to a technical proposal of a counter-rotating impeller ventilation device driven by a long axis. Background technique [0002] A reasonable ventilation system is to use ventilation power to provide sufficient fresh air, suitable temperature and humidity, and maintain good climate conditions to ensure the safety of personnel and improve the environment in the most economical way. need. A reasonable ventilation system should have the characteristics of a simple ventilation system, and the rationality of the ventilation system must be ensured as much as possible, so as to achieve the purpose of safe production. The quality of the ventilation equipment has a very important impact on the ventilation effect. [0003] Most of the existing counter-rotating impeller ventilation equipment adopts two-stage impellers driven by two motors with opposite rotation directions. ...

AI Technical Summary

Problems solved by technology

[0007] The specific technical problem to be solved by the present invention is the poor heat dissipation of the existing counter-rotating ventilation equipment and the problem of constant maintenance; at the same time, under the condition of satisfying the wind pressure, the switching between the single-stage rotation and counter-rotating rotation of the impeller is realized to further reduce the energy consumption. consumption, and provide a long-shaft driven counter-rotating impeller ventilator

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