HIGH-FREQUENCY HEATER

Title:

HIGH-FREQUENCY HEATER

Document Type and Number:

WIPO Patent Application WO/2001/097571

Kind Code:

A1

Abstract:

A high-frequency heater ensures a constant breaking current, maximizes input current, and thus produces a maximum high-frequency output efficiently. In this high-frequency heater, a power supply (1) is connected in a supply line associated with an overcurrent relay (4a), and a power converter (2) converts the power from the power supply (1) to high-frequency power and supplies it to a magnetron (15). A control circuit (20) supplies a signal to an inverter controller (10) to control input current so that the input current characteristic of the high-frequency heater may become close to the current breaking characteristic with time of the overcurrent relay (4a).

Inventors:

TAKASHIGE YUTAKA (JP)
MASUDA SHINICHI (JP)
UEDA KOJI (JP)

Application Number:

PCT/JP2001/005073

Publication Date:

December 20, 2001

Filing Date:

June 14, 2001

Export Citation:

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Assignee:

SHARP KK (JP)
TAKASHIGE YUTAKA (JP)
MASUDA SHINICHI (JP)
UEDA KOJI (JP)

International Classes:

H05B6/66; H05B6/68; (IPC1-7): H05B6/68

Foreign References:

JPH1187047A	1999-03-30
JPH11283737A	1999-10-15

Other References: