Small ventilator

Abstract

The invention discloses a small ventilator. The small ventilator is characterized in that a motor is connected with an external power source by a junction box arranged on a side surface of a housing case, the bottom of the motor is fixed to a flange, a blind window is arranged at the front of a certain end of the motor, fan blades are arranged at the certain end of the motor, a cover is arranged at the front of the blind window, is connected with the housing case by hinges and can be opened and closed by the aid of spiral fasteners and handles, the integral ventilator is fixedly mounted on a cabin by the aid of a composite plate on the housing case, sound absorption materials are arranged between an outer layer and an inner layer of the housing case, the blind window is a watertight blind window, the fan blades of the motor are made of aluminum alloy materials, and the housing case is made of steel plates and can be square or circular. The small ventilator has the advantages that the small ventilator can be easily and conveniently connected with a pipe system, noise can be lowered, and the small ventilator has extremely high practical value and economic value.

Description

technical field [0001] The invention belongs to the field of ship building, and in particular relates to a small fan. Background technique [0002] Now, for general marine axial flow fans, one end is usually paired with a ventilation pipe flange, and the other end needs to be equipped with a short pipe flange to be welded on the enclosure, and the bulkhead is externally connected with shutters. However, it is often inconvenient to make the enclosure without damaging the hull structure. Under the premise, it is necessary to find materials for splicing, butt welding with reinforcing ribs, girder panels, etc., butt welding with reinforcing plates, patching and sealing, etc., and the painting, welding slag cleaning, grinding and other processes after production are often very troublesome. It often has problems such as complex structure and construction, high noise, only partial painting, and welding slag generated during the installation of the surrounding well cannot be complet...

AI Technical Summary

Problems solved by technology

[0002] Now, for general marine axial flow fans, one end is usually paired with a ventilation pipe flange, and the other end needs to be equipped with a short pipe flange to be welded on the enclosure, and the bulkhead is externally connected with shutters. However, it is often inconvenient to make the enclosure without damaging the hull structure Under the premise, it is necessary to find materials for splicing, butt welding with reinforcing ribs, girder panels, etc., butt welding with reinforcing plates, patching and sealing, etc., and painting, welding slag cleaning, grinding and other processes after production are often very troublesome. It often has problems such as complex structure and construction, high noise, only partial painting, and welding slag generated during the installation of the surrounding well cannot be completely cleaned.

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