SU289029A1 - BRUSH CLEANER - Google Patents

Description

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The present invention relates to the field of aviation technology and is intended to clean the windows of an aircraft cabin during rain or snowfall.

A mechanical windscreen wiper with an electric drive and a brush is known, which is pressed against the glass by a lever mechanism.

The disadvantage of such a wiper is that it does not provide a constant amount of force pressing the brush to the surface of flat convex glass.

The proposed wiper is characterized in that the bottom surface of the elastic profile of the brush is concave and forms a closed iolost during which the glass is in contact, in which a vacuum is created by the ejector. This ensures that the brush is evenly and consistently pressed against the glass. In order to increase the cleaning effect of the glass surface in the end edges of the elastic profile of the brush, the sprue holes and calibrated holes communicate the closed cavity with the atmosphere.

FIG. 1 shows a diagram of the described wiper; on fit. 2 is a cross-section of the brush (section along A-A in FIG. 1).

the wife has an elastic profile 7, in the end parts of which holes 8 are made.

The operation of a wiper is as follows.

When turned on, the brush / begins to clean the surface of the glass 2. At the same time, pressure from the air drawn from the engine compressors is supplied to the ejector 5 by pressure.

In the working area

an ejector will be created by an unbending pipeline that is cavity, the cavity formed extends to 2n the internal surface of glass of profile 7. By virtue of the elastic difference of pressure applied to the inner and inner surfaces of the brush, the pressure drops off, equally and irregularly and continuously moving the brush to the glass, regardless of degree of curvature of its surface. The holes 8 in the elastic profile of the brush provide a constant flow of air through the cavity of the brush. This air, trapping particles of moisture under the brush, enhances the effect of cleaning the glass.

Subject invention

I. Brush screen wiper

and permanently pressing the brush against glass with any curvature of the surface, the elastic brush profile is made concave with a surface that forms a closed cavity upon contact with glass, in which the ejector creates a rarefaction.

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2. Wiper on and. 1, characterized in that, in order to enhance the cleaning effect of the glass surface, the elastic profile of the brush is made with calibrated holes in the end edges, which communicate a closed cavity with the atmosphere.

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