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US 5,334,403 AGranted
Method and device for applying microwaves to products, especially for drying, reheating and defreezing said products
OwnerEtienne de Maillardinventor
Life of this patent
Estimating the term…
Abstract
A method and apparatus defreeze, reheat and dry products in a closed chamber by moving a microwave source above a layer of product in a to-and-from motion at a specific, constant height from the product layer.
Claims8
A method of applying microwaves for defreezing, reheating or drying products, comprising the steps of:
- disposing product to be treated on a least one layer in a closed chamber, the layer having an extent;
- moving a microwave source above and at a specific constant distance from the layer to scan the extent of the layer in at least one to-and-from movement;
- and
- varying microwave source movement speed, passage number and microwave radiation intensity according to product type and treatment.
1 more element
A device for applying microwaves for defreezing, reheating or drying products, comprising:
- a heat-insulated, metallic, waveproof sealed chamber with an access device;
- product receiving means, located inside said chamber, for maintaining product to be treated in at least one layer;
- a microwave source coupled to carrier means for moving said microwave source in at least a to-and-fro movement and for supporting said microwave source at a specific constant height above said product receiving means;
- and
- control means, coupled to said microwave source and said carrier means, for commanding, adjusting and controlling parameters of irradiation and movement.
2 more elements
Dependencies are inferred from the claim text.