Loading patent…
AssigneeCWS International AG
InventorsMarkus Ehrensperger, Hans-Jörg Studer
Estimating the term…
An evaporation dispenser for freshening the air in closed spaces such as toilets, washrooms and waiting rooms, telephone booths and lifts. A mounting plate is arranged in a housing and is divided into two chambers by a horizontal separating surface. The lower chamber serves as an evaporation space and holds two bottles of active substance which form a saturated atmosphere in the chamber via evaporating elements. This atmosphere is diffused into the outside air by means of a fan which draws the saturated atmosphere from the evaporation space. Simultaneously, ambient air is drawn into the evaporation space to become saturated. Both the discharge of the saturated atmosphere and the drawing in of ambient air may be performed by a single rotor compressor, the rotor being divided into two sections by a radial divider. The discharge of the saturated atmosphere may be controlled by a microcontroller coupled to sensors which monitor activity in the closed space.
An evaporation dispenser for releasing at least one deodorizing and/or odor-neutralizing and/or perfuming volatile active substance by evaporating the active substance in a evaporation chamber in the dispenser via at least one evaporating element to form an atmosphere which is enriched with the volatile active substance in the region of the saturation vapor pressure of the substance constituents and releasing at least a portion of the enriched atmosphere in a mechanically accelerated manner into the ambient air during release periods in a range of about 3 to 20 seconds by means of a compressor operated by an autonomously loaded direct current motor, wherein the active substances are contained in at least one storage bottle and the compressor is a suction/pressure fan having a first part for drawing off a quantity of saturated atmosphere from the evaporation chamber and discharging the quantity into the ambient air and a send part for simultaneously supplying a substantially equal quantity of ambient air to the evaporation chamber.
Dependencies are inferred from the claim text.