Hydrogen peroxide vaporizer arrangement in a disinfecting device

A disinfection device for evaporation of a liquid comprising hydrogen peroxide to a desired, enclosed air volume, the disinfection device comprising:

• a controller for controlling the disinfection device,
• a liquid container, which comprises an aqueous solution of hydrogen peroxide, in which content of hydrogen peroxide is selectable between 5-50%,
• wherein the disinfection device further comprises:
• an evaporator element, to which liquid is pumped or directed from the liquid container,
• an air blower, the air flow of which is directable in a direction of a longer dimension of the evaporator element, substantially horizontally,
• at least one inner surface of the disinfection device, which is or which may be in contact with gasified hydrogen peroxide after evaporation, has been heated using an additional heating element so that condensation of the gasified hydrogen peroxide on the at least one inner surface of the disinfection device in a route of the gas is prevented, and
• the evaporator element comprising:
• heat conducting material,
• at least one heating element, heat of the heating element is conductable to an upper surface of the evaporator element,
• wherein
• the evaporator element comprises on the upper surface one meandering groove comprising substantially straight and parallel sections for a liquid comprising hydrogen peroxide, the groove having a desired constant or varying width and depth, and an area of the groove seen directly from above covers at least 50% of the entire area of the evaporator element seen directly from above, and in which
• the evaporator element is adapted to be placed in an inclined angle or a bottom surface of the groove is arranged to be descending on a route of the liquid so that the liquid comprising hydrogen peroxide is fed and drained to a start point of the groove at a first end of the evaporator element as the liquid flows along the groove towards an end point of the groove at an opposite, second end of the evaporator element, the liquid spreading at least to a part of the groove before evaporation,
• wherein a volume of the upper side of the groove, which is arranged open, enables a vaporized air-gas mixture comprising hydrogen peroxide to spread to a desired enclosed air volume.