High frequency heating apparatus utilizing inverter power supply
First Claim
1. In a high frequency heating apparatus which includes an enclosure having a door, a heating chamber, and a control panel, the improvement comprising:
- a unitary structure disposed within the enclosure and outside of the heating chamber comprising;
an essentially closed metallic casing, a magnetron disposed within said casing for generating microwaves, an inverter power supply disposed within said casing for supplying a high voltage electric power to said magnetron, and a cooling means disposed within said casing for cooling said magnetron and said inverter power supply; and
an abnormality detecting means disposed within said casing and operatively connected to at least one of said inverter power supply, said magnetron, and said cooling means for detecting an occurrence of an abnormal condition in at least one of said inverter power supply, said magnetron and said cooling means, said abnormality detecting means providing information for controlling an operation of said inverter power supply.
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Accused Products
Abstract
A high frequency heating apparatus includes a unitary structure including a magnetron for generating a microwaves, an inverter power supply for supplying a high voltage electric power to the magnetron, and a cooling unit for cooling the magnetron and the inverter power supply, all of which are accommodated within a common metallic casing. The unitary structure is provided at least one of a detector for detecting an operating condition of the cooling unit and a safety device including a detector for detecting a mounting of the metallic casing to a cabinet. For avoiding an electric shock, the unitary structure is divided into high and low voltage portions and the magnetron and the inverter power supply are electrically connected directly to each other without relying on the unitary structure so as to thereby accomplish a structure effective to minimize noise and to improve the reliability and the safety factor.
46 Citations
7 Claims
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1. In a high frequency heating apparatus which includes an enclosure having a door, a heating chamber, and a control panel, the improvement comprising:
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a unitary structure disposed within the enclosure and outside of the heating chamber comprising;
an essentially closed metallic casing, a magnetron disposed within said casing for generating microwaves, an inverter power supply disposed within said casing for supplying a high voltage electric power to said magnetron, and a cooling means disposed within said casing for cooling said magnetron and said inverter power supply; andan abnormality detecting means disposed within said casing and operatively connected to at least one of said inverter power supply, said magnetron, and said cooling means for detecting an occurrence of an abnormal condition in at least one of said inverter power supply, said magnetron and said cooling means, said abnormality detecting means providing information for controlling an operation of said inverter power supply. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification