Title:
加熱調理器
Document Type and Number:
Japanese Patent JP4792931
Kind Code:
B2
Abstract:
A heating cooking device includes a top plate arranged to have an object to be heated placed thereon, a heating unit for heating the object, a touch key including a first electrode and a second electrode facing each other across the top plate, an input unit for applying an alternating current (AC) voltage to the second electrode and for outputting a voltage changing according to a change of the AC voltage when the first electrode is pushed, a detector for outputting a first signal if the voltage output from the input unit changes from the reference value to the first value, an operation judging unit for outputting a second signal according to a rate of change of the voltage output from the input unit, and a controller operable to perform control of the heating unit based on the first and second signals. The input unit outputs a voltage changing from a reference value to a first value and consecutively changing towards the reference value according to a change of a capacitance between the first and second electrodes. The detector outputs a first signal if the voltage output from the input unit changes from the reference value to the first value. The operation judging unit outputs a second signal according to a rate of change of the voltage output from the input unit which changes towards the reference value consecutively after changing from the reference value to the first value. The controller is operable to perform control of energization of the heating unit if the controller does not receive the second signal after receiving the first signal, and not to perform the control of the energization of the heating unit if the controller receives the second signal after receiving the first signal. This heating cooking device does not erroneously operate even when the touch key contacts conductive material, such as water.
Inventors:
Koji Niiyama
Masamichi Komada
Nakamura politics
Masamichi Komada
Nakamura politics
Application Number:
JP2005331073A
Publication Date:
October 12, 2011
Filing Date:
November 16, 2005
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H05B6/12; F24C7/04; F24C15/00; H03K17/96; H01H36/00
Domestic Patent References:
| JP2005291510A | ||||
| JP2003224459A | ||||
| JP2005085667A | ||||
| JP2005158651A | ||||
| JP2005166392A | ||||
| JP2006185745A |
Attorney, Agent or Firm:
Hiroki Naito
Daisuke Nagano
Kentaro Fujii
Daisuke Nagano
Kentaro Fujii