Cts Technologies Ag

Sinterkil Ab

Bertil Eliasson

Lennart Carlsson

Fredrik Nils Engman

Per-Åke Hallberg

Per-&angst;ke Hallberg

Per-Ake Hallberg

Fredrik Engman

Apparatus and a method for controlling vermin either directly or indirectly via objects giving shelter to the vermin. Cooling of the vermin is effected by providing dry snow particles by passing pressurized carbon dioxide through a nozzle directed at the vermin. Smaller and larger snow particle sizes are allocated within a selected range of sizes and velocities. Environmentally friendly and rapid control of the vermin is achieved, and an effectively functioning cooling system is provided, which, by the gradual supply of snow, executes cooling through different velocities and sizes of the snow particles. In a initial cooling phase small snow particles provide cooling by sublimating and giving off cold rapidly. Larger snow particles then penetrate through the gas barrier that is created by the sublimating small snow particles to maintain the cooling effect.

Device and use in connection with measure for combating

The invention relates to a method for bringing about the transformation of a medium such as carbon dioxide or other gases or mixtures thereof into snow. In accordance with the invention, the aforementioned medium and the snow produced from it are caused to interact with surfaces of a snow-producing nozzle extending from a discharge orifice for the medium. The aforementioned medium, after exiting from the discharge orifice, is either permitted to expand into an elongated space which exhibits a uniform cross section. Or the medium is also permitted to act against a number of obstructions in the form of flexible bristles situated along the flow path of the medium as it flows out between the discharge orifice for the medium and an outlet for the formed snow. The produced carbon dioxide snow is intended for use in small animal pest decontamination. Means for producing snow are included in the invention.

Method to make snow for insect control and device for making the same

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Vallda, Sweden

Bertil Eliasson