Food cooling appliance

1. A food cooling appliance ( 1 ) comprising:

an outer casing ( 2 ) extending along a substantially vertical reference axis (A);

a food cooling chamber ( 3 ) housed inside said outer casing ( 2 );

at least one adjustable food-supporting shelf ( 5 ) removably positionable inside said cooling chamber ( 3 ) in a plurality of operative positions vertically spaced inside said cooling chamber ( 3 );

a primary inductor ( 8 ) located adjacent to said cooling chamber ( 3 ) and extending in a direction substantially parallel to said vertical reference axis (A) to a predetermined length (l 2 ), said primary inductor ( 8 ) generating a single elongated magnetic field along a vertical length (l 1 ) of the cooling chamber ( 3 ) so as to be faced to said food-supporting shelf ( 5 ) when the food-supporting shelf ( 5 ) is located inside said cooling chamber ( 3 ) at any of the plurality of operative positions;

at least one light-emitting unit ( 18 ) located along an outer peripheral edge of said food-supporting shelf ( 5 ); and

at least one secondary inductor ( 9 ) housed in said food-supporting shelf ( 5 ) to supply contactlessly said light-emitting unit ( 18 ) with electric current induced in the secondary inductor ( 9 ) by the magnetic field generated by said primary inductor ( 8 ), when said food-supporting shelf ( 5 ) is housed inside said cooling chamber ( 3 ) in any operative position along said predetermined length (l 2 ) of said primary inductor ( 8 ), wherein the primary inductor ( 8 ) and the secondary inductor ( 9 ) are located on opposite sides of an inner wall of the cooling chamber ( 3 ) in a way that the primary inductor ( 8 ) and the secondary inductor ( 9 ) face each other.

2. An appliance as claimed in claim 1 , wherein said cooling chamber ( 3 ) extending inside outer casing ( 2 ) to a predetermined length (l 1 ); said primary inductor ( 8 ) being of a length (l 2 ) substantially equal or less than said length (l 1 ) of said cooling chamber ( 3 ) so as to be faced to said food-supporting shelf ( 5 ) when the food-supporting shelf ( 5 ) is located inside said cooling chamber ( 3 ) in a number of different operative positions.

3. An appliance as claimed in claim 1 , wherein said primary inductor ( 8 ) comprises at least one coil ( 10 ) having a number of turns wound to form a loop elongated in a direction parallel to said reference axis (A); said coil ( 10 ) being of a length (l 2 ) substantially equal or less than said length (l 1 ) of said cooling chamber ( 3 ).

4. An appliance as claimed in any one of claim 1 , comprising a number of light-emitting diodes ( 18 ) located along an outer peripheral edge of said food-supporting shelf ( 5 ) and coplanar with the food-supporting shelf ( 5 ).

5. An appliance as claimed in claim 4 , wherein said food-supporting shelf ( 5 ) is substantially rectangular, and comprises a rear peripheral edge ( 13 ) which is positioned facing said primary inductor ( 8 ) when the food-supporting shelf ( 5 ) is housed inside said cooling chamber ( 3 ); said light-emitting diodes ( 18 ) being housed in said food-supporting shelf ( 5 ) along said rear peripheral edge ( 13 ).

6. An appliance as claimed in claim 5 , wherein said food-supporting shelf ( 5 ) comprises a flat plate ( 16 ), which is coplanar with the food-supporting shelf ( 5 ) and made of material capable of transmitting and/or diffusing light; said light-emitting diodes ( 18 ) being housed in said food-supporting shelf ( 5 ) so as to be parallel to and face a peripheral edge ( 16 a ) of said flat plate ( 16 ).

7. An appliance as claimed in claim 6 , wherein the light-emitting diodes ( 18 ) are housed in said food-supporting shelf ( 5 ) so as to be parallel to and face a rear peripheral edge ( 16 a ) of said flat plate ( 16 ) facing said primary inductor ( 8 ).

8. An appliance as claimed in any one of claim 1 , wherein said primary inductor ( 8 ) is interposed between said outer casing ( 2 ) and said cooling chamber ( 3 ).

9. An appliance as claimed in claim 8 , wherein said cooling chamber ( 3 ) comprises a vertical rear wall ( 3 a ) opposite a door ( 4 ) closing said cooling chamber ( 3 ); said primary inductor ( 8 ) being interposed between said outer casing ( 2 ) and said vertical rear wall ( 3 a ), and outside said cooling chamber ( 3 ).

10. An appliance as claimed in any one of claim 1 , wherein said secondary inductor ( 9 ) comprises at least one coil ( 12 ) having a number of turns.

11. An appliance as claimed in claim 10 , wherein said secondary inductor ( 9 ) comprises at least one core of ferromagnetic material ( 11 ), about which the winding of said coil ( 12 ) are wound.

12. An appliance as claimed in claim 11 , wherein said core ( 11 ) is housed in said food-supporting shelf ( 5 ) to face said primary inductor ( 8 ) when said food-supporting shelf ( 5 ) is housed in said predetermined position inside said cooling chamber ( 3 ).