GB2586006A

GB2586006A - Electromagnetic waves induced wipers for vehicles' front and back windscreens

Info

Publication number: GB2586006A
Application number: GB1909820.1A
Authority: GB
Inventors: Mokhber Ali
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2021-02-03
Anticipated expiration: 2039-07-09
Also published as: GB2586006B; GB201909820D0

Abstract

A device which emits microwave radiations in the form of electromagnetic waves which can be used to clear a windscreen of rain or snow water droplets from a windscreen surface to keep the surface clear. This may be used instead of conventional windscreen wipers. The emitter sends microwaves across the screen and the reflector may be placed at opposite lateral side of a windscreen, which on microwave reflection will form standing waves immediate to the glass surface of the windscreens. The microwave electromagnetic radiation in this region heats and vaporises the rain or snow falling on the outside glass surface of the vehicle windscreen. It effectively stops build-up of a water layer on the glass surface with the advantage of not producing noises and obstructing the drivers' field of view as per existing blade type wipers.

Description

Electromagnetic Waves Induced Wipers for Vehicles' Front and Back Windscreens The subject matter of this patent is an alternative design to existing vehicle windscreen wipers. The currently in-use conventional vehicles windscreen wipers were introduced in the beginning of last century and have not changed due to their robustness, ease of operation and maintenance and above all, their effectiveness to clean the windscreen glass surfaces.

For this patent, the definition of a vehicle is something used as an instrument of conveyance. It can include any conveyance used for transporting passengers or things by land, water, or air.

The conventional windscreen wiper has two functions; namely to wipe out the water layer such as rain droplets and snow or remove general dirt that falls on the windscreen such as dust, mud or birds dropping and such like.

Although the existing blade type windscreen wipers function well, but there is an important problem which makes using them unpleasant to the vehicle's occupants. The issue is 'annoyance in-use' factor. They are inconvenient as they generate irritating frictional noises when functional and disturbs the drivers' view. This issue has been overlooked due to lack of alternatives and having to 'learnt to live with it'.

This patent describes an innovative device which functions as a vehicle windscreen glass wiper for removing the water or snow layer from the windscreen without the problems associated with the use of current wipers. It is anticipated that if this new devise is used, the vehicles still need to have a conventual blade type windscreen wiper for the objective of removing general dirt from the windscreens.

Since the major use of windscreen wipers is related to cleaning the glass surface by removing the water layer, this innovative product for most of the time eliminates the 'annoyance' factor associated with the use of conventional windscreen wipers. This device is in effect an invisible windscreen glass wiper.

The invention will now be described solely by way of example and with reference to the accompanying drawing. As such this patent is related to the use of electromagnetic waves to heat and vapourise the rain or snow drops falling on the outside glass surface of the vehicle windscreen.

The electromagnetic wave for this purpose is in the microwave range. Water molecules absorb energy from the microwaves in a process called dielectric heating. Water molecules are electric dipoles, meaning that they have a partial positive charge at one end and a partial negative charge at the other, and therefore rotate as they try to align themselves with the alternating electric field of the microwaves. Rotating molecules hit other molecules and put them into motion, thus generate heating energy. This energy raises the temperature of the water to boiling point and vapourisation temperature.

As depicted in Figure 1, for this proposed design a microwave generator is located inside the vehicle with an emitter which is situated on the lateral side of the vehicle windscreen. On the opposite lateral side of the windscreen there is a deflector panel which bounces back the microwaves to form standing microwaves. The standing waves heat up the windscreen glass outside surface and form a high energy region immediate to the glass outside surface which can heat the water molecules to vapour state.

The rain or snow landing water molecules on the glass surface are thus heated within this region and also the hot surface of the windscreen glass. This heating energy is enough to boil and vapourise the water molecule and effectively there is no liquid aqueous phase forming on the outside of the windscreen glass to block and obstruct the view of the driver. Additionally, no frictional noises will occur as there are no mechanical part in this device.

This concept is novel as no such device is currently in existence.

Claims

Claims 1. Use of microwave electromagnetic radiation for the purpose of evapourating the falling rain water and snow droplets on the vehicle windscreens glass surfaces.
2. A device as in claim 1 where it is fitted inside the vehicle and it emits microwaves from the lateral side of the windscreen with a reflector panel situated on the opposite lateral side of the windscreen.
3. A device as in claim 1 will heat up the water liquid droplets and snowflakes solids to the boiling point where the water molecules will vapourise and no liquid layer is formed on the vehicle windscreen.