Air purifier for a refrigerator
AssigneeLaboratori Fabrici Srl
InventorsVincenzo VITIELLO, Alessio D'ANDREA, Pietro Paolo Felice GANIS
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Abstract
An air purifier for use in refrigerators contains in the path for the flow of air through the purifier: a photocatalyst wherein a layer based on tungsten oxide (WO3) is applied on a ceramic foam support. The layer may also contain tin oxide and silver oxide, as well as platinum. The oxide layer may be applied by immersion without the application of a primer. A method for increasing the shelf life of fruits, in particular also of strawberries, salad and vegetables in a refrigerator and a related refrigerator are also described. The purifier is characterized by low energy consumption, thanks to the use of white light to activate the photocatalyst, as well as little toxic impact.
Claims17
An air purifier for use in refrigerators comprising:
- (a) a housing provided with an inlet for a fluid, in particular air, and an outlet for the fluid;
- (b) a photocatalysis chamber suitable for being passed through by said fluid and in communication with said inlet and said outlet, comprising
- (b-1) a photocatalyst comprising a ceramic foam support coated with a layer containing tungsten trioxide;
- and
- (b-2) a visible light source for activating said photocatalyst.
A food refrigerator comprising an air purifier comprising:
- (a) a housing provided with an inlet for a fluid, in particular air, and an outlet for the fluid;
- (b) a photocatalysis chamber suitable for being passed through by said fluid and in communication with said inlet and said outlet, comprising
- (b-1) a photocatalyst comprising a ceramic foam support coated with a layer containing tungsten trioxide;
- and
- (b-2) a visible light source for activating said photocatalyst.
13-15. (canceled)
Dependencies are inferred from the claim text.