Fluid sprinkling – spraying – and diffusing – Processes – Of weather control or modification
Patent
1996-07-03
1998-09-08
Weldon, Kevin
Fluid sprinkling, spraying, and diffusing
Processes
Of weather control or modification
239 141, 239136, H05B 348, G08B 1502
Patent
active
058033599
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a device for generating a fog.
The object of the invention is to provide a device which can gasify a relatively small quantity of liquid extremely quickly, in order to fill a closed space entirely or almost entirely.
The invention intends in particular to provide a device, by means of which a quantity of non-transparent vapour can be generated in a space starting from a signal emitted by an alarm device so that, in case of burglary, the burglar is in a room where any visual observation or orientation has become impossible.
2. Description of the Background Art
The use of a fog, filling one or more spaces, as means for preventing burglaries is suggested by German patent No. DE-A-21 61 378. This document gives no indication of the way wherein large quantities of fog can be generated quickly. This is indeed an absolute requirement to apply this method with success.
French patent 2 501 960 describes a method and a device for generating an artificial fog, wherein water has to be preheated for transferring thermal energy to the liquid or frozen CO.sub.2 in order to vaporize this CO.sub.2 into the vapour phase. This transfer occurs in a subsequent mixing room or mixing and storage room.
The thermal energy used here is therefore not used to exert a sufficient pressure for permitting the artificial fog to be emitted quickly.
SUMMARY OF THE INVENTION
An essential object of the invention is thus to generate large quantities of fog and to distribute it by using the pressure, which can be continuously generated by a small quantity of liquid during a known and determined period.
To achieve this object, the device according to the invention comprises: alcohol mixture, a second closed vessel having a heat exchanger therein for keeping the second vessel at a second temperature higher than the first temperature of the first vessel, a pipe connecting the first vessel to the inside of the second vessel, said pipe including a valve mounted thereon between the first vessel and the second vessel and opening a connection between the first vessel and the second vessel upon activation by a signal emitted by an alarm device, and an outlet located in the wall of the second vessel for distributing fog generated under pressure in the second vessel into the environment with a mixture consisting of mono- or polyvalent alcohols and a liquid and/or a gas or a mixture of liquids or gasses having such a vapour pressure curve that pressure can be generated by varying the temperature of the mixture; higher than the temperature of the liquids and/or gasses in the first vessel; to the inside of the second vessel, said pipe comprising a valve mounted thereon between the first and the second vessel and opening the connection between the first and the second vessel upon activation by a signal emitted by an alarm device; generated in this latter vessel into the environment, optionally by using a pipe mounted on this outlet.
Still according to the invention, the first and second vessels are kept at the required temperature by thermostatically controlled heating resistances, and the heat exchanger is formed by a mass kept at the required temperature, onto which mass the alcohol mixture coming from the first vessel can be evaporated and/or overheated.
In a preferably applied embodiment, the mass of metal particles (die-waste).
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS
Other details and advantages of the invention will become apparent from the following description of a device for generating a fog, according to
REFERENCES:
patent: 2311199 (1943-02-01), Astradsson
patent: 3864440 (1975-02-01), Giocoechea
patent: 4129252 (1978-12-01), Pouring
patent: 4697735 (1987-10-01), Temple
patent: 4764660 (1988-08-01), Swiatosz
patent: 4818843 (1989-04-01), Swiatosz
patent: 5156333 (1992-10-01), Worsfold
Jaico
Weldon Kevin
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