Hygienic process for an air supply system
AssigneeStiebel Eltron GmbH & Co. KG
InventorsHubert Nolte, Frank Stiebel
Life of this patent
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Abstract
The invention relates to an air blower apparatus, in particular a jet air hand dryer, comprising: a housing having an inlet and an outlet, at least one air duct extending inside the housing between the inlet and the outlet, for guiding an air stream, a fan unit for producing a directed stream of air in the air duct, and a UV treatment unit arranged inside a section of the air duct, said UV treatment unit having a treatment chamber for at least parts of the stream passing through the air duct, characterised in that the treatment chamber is at least part of a receiving chamber for a fan impeller in the fan unit, wherein a plurality of lighting adapted to emit UV light are arranged inside the receiving chamber.
Claims20
An air blower apparatus comprising:
- a housing having an inlet and an outlet;
- at least one air duct extending inside the housing between the inlet and the outlet and configured to guide an air stream;
- a fan unit having a fan impeller configured to produce the air stream in the air duct;
- and
- a UV treatment unit arranged inside a section of the air duct, the UV treatment unit having a treatment chamber for at least parts of the air stream passing through the air duct;
- wherein
- the treatment chamber is at least part of a receiving chamber for the fan impeller in the fan unit, and a plurality of lights adapted to emit UV light are arranged inside the receiving chamber,
- the lights are designed to emit light with a wavelength in a UV-C range from 100 nm to 280 nm, inclusive,
- the lights are light emitting diodes (LEDs) and are arranged in electrical communication with each other on a flexible strip of material, and
- the housing has at least two housing portions that are connected sealingly to each other by the strip of material.
An air blower apparatus comprising:
- a housing having an inlet and an outlet;
- at least one air duct extending inside the housing between the inlet and the outlet and configured to guide an air stream;
- a centrifugal fan unit having a fan impeller configured to produce the air stream in the air duct;
- a UV treatment unit arranged inside a section of the air duct, the UV treatment unit having a treatment chamber for at least parts of the air stream passing through the air duct;
- wherein the treatment chamber is at least part of a receiving chamber for the fan impeller in the fan unit;
- and
- a plurality of lights adapted to emit UV light are arranged inside the receiving chamber and directed towards an outer circumferential surface of the fan impeller such that the UV light emitted by the lights hits vanes of the fan impeller or radiates into interspaces between the vanes, wherein the lights are arranged at intervals from one another on a circumferential surface of the receiving chamber surrounding the fan impeller;
- wherein the receiving chamber is substantially cylindrical in shape, and the fan impeller is arranged off-center in the receiving chamber, wherein the lights are arranged on the circumferential surface at increasingly larger intervals in a direction of the outlet.
An air blower apparatus comprising:
- a housing having an inlet and an outlet;
- at least one air duct extending inside the housing between the inlet and the outlet and configured to guide an air stream;
- a fan unit having a fan impeller configured to produce the air stream in the air duct;
- a UV treatment unit arranged inside a section of the air duct, the UV treatment unit having a treatment chamber for at least parts of the air stream passing through the air duct, wherein the treatment chamber is at least part of a receiving chamber for the fan impeller in the fan unit;
- wherein the receiving chamber is substantially cylindrical in shape, and the fan impeller is arranged off-center in the receiving chamber;
- and
- a plurality of lights adapted to emit UV light and arranged on a circumferential surface of the receiving chamber at increasingly larger intervals in a direction of the outlet.
Dependencies are inferred from the claim text.