High-frequency heating apparatus, state detecting apparatus and method for detecting operating state of high-frequency heating apparatus

A state detection device and technology of operation state, applied in lighting and heating equipment, electric heating device, microwave heating and other directions, can solve the problems of increasing device cost and total number of assembly processes, and achieve the effect of preventing false detection

Active Publication Date: 2010-10-06
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] According to the method of Patent Document 1, there is a problem that since the fastening process using screws t

Method used

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  • High-frequency heating apparatus, state detecting apparatus and method for detecting operating state of high-frequency heating apparatus
  • High-frequency heating apparatus, state detecting apparatus and method for detecting operating state of high-frequency heating apparatus
  • High-frequency heating apparatus, state detecting apparatus and method for detecting operating state of high-frequency heating apparatus

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Example

[0085] (First embodiment)

[0086] figure 1 It is a diagram showing a high-frequency heating device (such as a microwave oven) according to an embodiment of the present invention, and specifically showing the configuration of a part related to detection of an operating state of the high-frequency heating device. in figure 1 In this, AC power from a commercial power source is rectified into a DC current by a rectifier circuit, then smoothed by a smoothing circuit configured on the output side of the rectifier circuit and a smoothing capacitor of the choke coil, and is applied to the input side of the inverter. The DC current is converted into a desired high frequency (20 to 40 kHz) current through the on / off operation of the semiconductor switching element of the inverter. The inverter is driven by an inverter control circuit for controlling a semiconductor switching element that switches a DC current at a high speed, thereby switching the current flowing in the primary side of ...

Example

[0118] (Second embodiment)

[0119] Next, a second embodiment according to the present invention will be described in detail with reference to the drawings.

[0120] Figure 4 It is a diagram showing the high-frequency heating device 100 (such as a microwave oven) according to this embodiment of the present invention, and specifically showing the configuration of a part related to the detection of the operating state of the high-frequency heating device. in Figure 4 In this, AC power from a commercial power source is rectified into a DC current by a rectifier circuit, then smoothed by a smoothing circuit configured on the output side of the rectifier circuit and a smoothing capacitor of the choke coil, and is applied to the input side of the inverter. The DC current is converted into a desired high frequency (20 to 40 kHz) current through the on / off operation of the semiconductor switching element of the inverter. The inverter is driven by an inverter control circuit for controll...

Example

[0165] (Third embodiment)

[0166] According to the second embodiment, during a period of one rotation of the radio wave stirring member as the rotating member, the corresponding value of the anode current is detected. According to the present embodiment, regardless of a specific period of time for one rotation of the radio wave stirring member, in the case of using (1) threshold control or (2) change value detection control, the threshold of (1) or (2) is controlled according to the high frequency The output (output control signal) of the heating device changes. In other words, each threshold can be changed according to any time and any number of detections. In this case, as in the foregoing embodiment, the foregoing three methods (A) to (C) can be used.

[0167] That is, in this embodiment, refer to the second embodiment Image 6 with 7 Each of the calculation of the IaDC value in each segment and the detection of the rotation of the rotating antennas 68, 69 described can be op...

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Abstract

The application provides a high frequency heating equipment and a method for detecting the status detecting apparatus of the operational state. The status detecting apparatus includes a movement position determining part, which determines the movement position of the radio wave agitation component, the radio wave agitation component periodically operating to relatively agitate the microwave produced by the magnetrons relative to the object to be heated; an anode current input part, which determines one cycle of the cyclical movement of the radio wave agitation component based on the movement position information determined by the movement position determining part, and then corresponding values corresponding to the anode current input from the anode current input part is read multiple times during one cycle, and the operational state of the high frequency heating equipment is determined based on a plurality of corresponding values during one cycle. The operating state detecting apparatus and method can accurately detect an abnormality of a high-frequency heating apparatus without faulty operations.

Description

[0001] This application is a divisional application of the invention patent application with the application number 200680053430.3, the application date is December 26, 2006, and the invention title is "state detection device for detecting the operating state of high-frequency assumption equipment". technical field [0002] The present invention relates to a technique for high-frequency heating in equipment using a magnetron, such as a microwave oven, and in particular, to a state detection device for detecting an operating state of the high-frequency heating equipment. Background technique [0003] Figure 13 is a diagram showing the configuration of a microwave oven as an example of a high-frequency heating device. In this figure, AC power from a commercial power source 11 is rectified into a DC current by a rectification circuit 13, then smoothed by an output side of the rectification circuit 13 and a smoothing capacitor 15 of a choke coil 14, and applied to an inverter 16...

Claims

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Application Information

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IPC IPC(8): H05B6/68F24C7/02
CPCH05B6/666H05B2206/043
Inventor 守屋英明城川信夫末永治雄酒井伸一木下学
Owner PANASONIC CORP
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