High frequency heating apparatus and control method thereof

A high-frequency heating device and heating control technology, which is applied to electric heating devices, microwave heating, electric/magnetic/electromagnetic heating, etc., can solve the problems of reduced convenience, users cannot peep into the heating room, etc., and achieves reduced heating time, The effect of improving visibility and prolonging humidification time

Inactive Publication Date: 2004-05-12
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, for performing steam heating, condensation occurs on the window, and it is often impossible for the user to peek into the inside of the heating chamber; convenience of use may decrease

Method used

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  • High frequency heating apparatus and control method thereof
  • High frequency heating apparatus and control method thereof
  • High frequency heating apparatus and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] The high-frequency heating device and its control method according to the first embodiment will be described below.

[0111] Figure 6 is a basic circuit diagram of an inverter used in the power supply section 503 (see FIG. 5 ) for performing variable control of heating electric power of the heating section 511 (see FIG. 5 ). The converter is composed of transistors, inductors, transformers, capacitors, etc. exist Figure 6 In this, when a voltage is applied to the input side, current is supplied to the transistors Q1 and Q2 through the inductor L1 and the resistor R1, and the transistors Q1 and Q2 repeat ON / OFF operations due to oscillation. This oscillation becomes an oscillation waveform close to a sine wave, and resonates mainly with the resonance capacitor C1 and the transformer T1. The transformer T1 increases the voltage supplied to the primary coil of the transformer to the voltage required for heating, and outputs the voltage from the secondary coil. The hi...

Embodiment 2

[0179] Next, the heating control method of the high-frequency heating device of the second embodiment will be discussed with reference to the drawings.

[0180] Fig. 30 is the flowchart of high-frequency heating device; Figure 31 is the timing diagram of the high-frequency heating device; Figure 8 The internal state of the high-frequency heating device is shown.

[0181] As a preprocessing before the heating starts, in the heating condition input step P0, firstly, the user puts the heated item M to be heated on a plate, and puts the heated item on the plate into the heating chamber 11 and closes the door 21 . The user sets the heating condition through the input operation portion 507 and turns on the start switch (step 1 (S1)). Here, a case where a user selects steam heating as a heating condition will be discussed.

[0182] When the start switch is turned on, first, the preheating step P1 (S2) is started. In the preheating step P1, the evaporation pan 35 is heated main...

Embodiment 3

[0208] Next, the third embodiment is for controlling such that the temperature measurement of the infrared sensor 20 of the high-frequency heating device is performed within the time registered in the database in advance.

[0209]In this embodiment, control is performed so that the temperature measurement performed at the initial stage of heating in the second embodiment is performed within a prescribed time. If the heating chamber is filled with steam at a predetermined concentration or higher, it is substantially impossible for the infrared sensor 20 to measure the temperature of the object to be heated. The time from when steam is generated to when temperature measurement becomes impossible (temperature measurement limit time) varies depending on conditions such as the volume of heating chamber 11 , the amount of water supplied to evaporating pan 35 , and the output of evaporating pan heater 37 . Thus, the time until temperature measurement becomes impossible under the abov...

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Abstract

The present invention relates to a high-frequency heating apparatus with steam generation function and control method thereof. When high-frequency heating treatment for heat-treating with a high frequency and steam heating treatment for heat-treating with steam generated in a heating chamber are performed in order separately or at the same time for heat-treating the heated material, while air in the heating chamber is agitated, the air is circulated in the heating chamber. An appropriate heating program is automatically selected in response to the type of heated material to perform heat treatment. <IMAGE>

Description

technical field [0001] The present invention relates to a heating control method of a high-frequency heating device with a function of steam generation, and a high-frequency heating device with a function of steam generation, which uses high-frequency heating combined with steam heating to heat-treat objects to be heated (hereinafter referred to as for the item to be heated). Background technique [0002] So far, in order to heat food and other items, the item to be heated is first placed in the heating chamber, and the high-frequency heating switch is pressed to start heating. heated material. However, when the item is heated, the heated item that generates steam loses moisture due to high-frequency heating, and the surface of the heated item dries or hardens. In this way, to suppress moisture loss in high-frequency heating, for example, wrapping an article to be heated with a wrapping film (a film for wrapping food) is performed, and heat treatment is performed so that s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B6/68H05B6/80
CPCH05B6/6447H05B6/6479
Inventor 神崎浩二早川雄二内山智美渡辺贤治
Owner PANASONIC CORP
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