Method and device for de-icing an intake aperture
AssigneeWagner Alarm-und Sicherungssysteme GmbH
InventorDieter Lietz
Life of this patent
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Abstract
Disclosed is an apparatus and a method for de-icing an intake opening (2) in an intake duct (1) of a fire alarm system, through which ambient or equipment air is drawn in and supplied to a detector for sensing a fire parameter. To effectively remove an ice deposit on the intake opening (2) there is provided, in or on the intake opening (2), an elastic element having a through-hole (3) coaxial with the intake opening (2) which is adapted to be subjected to a compressed air blast in order to de-ice the intake opening (2) (FIGS. 4a to 4c).
Claims10
Apparatus for de-icing an intake opening in an intake duct of a fire alarm system, through which ambient or equipment air is drawn in and fed to a detector for sensing a fire parameter, characterized in that in or on the intake opening there is provided an elastic or flexible element having a through-hole coaxial with intake opening, which is adapted to be subjected to a compressed air blast via the intake duct.
A method for de-icing an intake opening in an intake duct of a fire alarm system, through which ambient or equipment air is drawn in and fed to a detector for sensing a fire parameter, characterized in that a compressed air blast is produced in the intake duct, by means of which an elastic or flexible de-icing element located in or on the intake opening is stretched or lifted up from the intake opening and subsequently resiliently returned under the influence of a restoring force, thereby detaching ice deposited on the intake opening.
Dependencies are inferred from the claim text.