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Method for diagnosing induction cooking device, induction cooking device

A cooking device and electromagnetic technology, applied in the direction of electric heating device, electric/magnetic/electromagnetic heating, electrical components, etc., can solve the problem of uneven heating of food

Active Publication Date: 2021-07-30
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cooking food in a closed chamber with a single, incoherent source such as a magnetron results in uneven heating of the food

Method used

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  • Method for diagnosing induction cooking device, induction cooking device
  • Method for diagnosing induction cooking device, induction cooking device
  • Method for diagnosing induction cooking device, induction cooking device

Examples

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Embodiment Construction

[0011] It is to be understood that the specific devices and processes illustrated in the drawings and described in the following specification are merely exemplary embodiments of inventive concepts. Accordingly, other physical characteristics relating to the embodiments disclosed herein are not to be considered limiting unless expressly stated otherwise.

[0012] Solid state radio frequency (RF) cooking appliances heat and prepare food by directing electromagnetic radiation into an enclosed chamber. Multiple RF feeds at different locations in a closed chamber create dynamic electromagnetic wave patterns as they radiate. To control and shape the waveform in the closed chamber, multiple RF feeds can radiate waves with individually controlled electromagnetic properties to maintain coherence (ie, a fixed interference pattern) within the closed chamber. For example, each RF feed may transmit a different phase and / or amplitude relative to other feeds. Other electromagnetic charact...

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Abstract

A method for diagnosing an electromagnetic cooking device, and an electromagnetic cooking device. The method includes: selecting a frequency from a set of frequencies in the bandwidth of radio frequency electromagnetic waves; setting a subset of the set of radio frequency feeds to output a radio frequency signal having the selected frequency; measuring the ongoing output of the set of radio frequency feeds forward power levels of a subset of said radio frequency signals; measuring forward power levels and backward power levels of the set of radio frequency feeds; and processing said forward power levels and said backward power level measurements As a result, the operating state of the induction cooking device is determined with this process based on the measurements of the forward power level and the backward power level.

Description

technical field [0001] The present invention relates generally to methods for diagnosing electromagnetic cooking devices and, more particularly, to modeling a plurality of high power amplifiers of a microwave oven as a multi-port radio frequency network to characterize the state of the network. Background technique [0002] A conventional microwave oven cooks food through a process of dielectric heating, in which a high frequency alternating electromagnetic field is distributed throughout an enclosed chamber. A subband of the radio spectrum, microwave frequencies at or near 2.45 GHz induce dielectric heating primarily by absorbing energy in water. [0003] To generate microwave frequency radiation in conventional microwaves, a voltage applied to a high voltage transformer results in high voltage power applied to a magnetron that generates microwave frequency radiation. Microwaves are then transmitted through the waveguide into the enclosed chamber containing the food. Cook...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B6/72
CPCH05B6/681H05B6/70H05B6/705H05B6/72H05B6/686
Inventor R·迪马尔蒂诺G·多尔F·乔达诺
Owner PANASONIC CORP
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