Tunable nanowires blended rapid heating plate
AssigneeWhirlpool Corporation
InventorMuhammad Khizar
Life of this patent
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Abstract
A microwave heating appliance includes a housing having interior walls with interior surfaces defining a cooking chamber for heating food, a microwave heating source configured to generate microwave radiation for heating the food, and a rapid heating plate disposed in the cooking chamber. The rapid heating plate includes a substrate having a hybrid coating disposed on thereon, with the hybrid coating configured to generate heat upon application of a magnetic field and upon absorption of the microwave radiation from the microwave heating source. The hybrid coating includes ferromagnetic nanowires and ferritic carbon nanotubes dispersed in a polymer to generate heat for transferring to food placed on the rapid heating plate in the cooking chamber.
Claims20
A microwave heating appliance comprising:
- a housing having interior walls with interior surfaces defining a cooking chamber for heating food;
- a microwave heating source configured to generate microwave radiation for heating the food;
- and
- a rapid heating plate disposed in the cooking chamber, the rapid heating plate including a substrate having a hybrid coating disposed on thereon, the hybrid coating configured to generate heat upon application of a magnetic field and upon absorption of the microwave radiation from the microwave heating source,
- wherein the hybrid coating includes ferromagnetic nanowires and ferritic carbon nanotubes dispersed in a polymer to generate heat for transferring to food placed on the rapid heating plate in the cooking chamber.
A rapid heating plate for a microwave heating appliance, the rapid heating plate comprising:
- an aluminum substrate defining a surface for supporting food for heating thereon;
- and
- a hybrid coating disposed on the surface, the hybrid coating including ferromagnetic nanowires and ferritic carbon nanotubes and configured to generate heat upon application of a magnetic field and upon absorption of microwave radiation from a microwave heating source.
A method of forming a rapid heating plate for a microwave appliance, the method comprising:
- mixing ferromagnetic nanowires with ferritic carbon nanotubes in a liquid polymer to form a hybrid nanocoating;
- depositing the hybrid nanocoating on a substrate to form a rapid heating plate;
- and
- curing the rapid heating plate to form a coating having an initial heat ramp of up to 960 degrees C. per minute.
Dependencies are inferred from the claim text.