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Fire sensing control method for microwave oven

A control method and technology of microwave ovens, which are applied in the directions of household stoves/stoves, household heating, lighting and heating equipment, etc., can solve the problems of the troublesome assembly process of microwave ovens, increase the burden on consumers, and increase production costs, achieve low prices, reduce Quantity, effect of preventing product damage

Inactive Publication Date: 2004-06-09
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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Problems solved by technology

But the microwave oven of this prior art needs to be provided with a plurality of thermostats and thermistors in multiple places in the microwave oven in order to be able to perceive whether to break out of fire during the driving process, will bring a lot of troubles to the assembling process of microwave oven like this
In addition, due to the increase in the number of parts, the production cost will increase, which will eventually increase the burden on consumers.

Method used

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  • Fire sensing control method for microwave oven
  • Fire sensing control method for microwave oven
  • Fire sensing control method for microwave oven

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Embodiment Construction

[0015] Such as image 3 As shown, the microwave oven fire sensing control device of the present invention mainly includes a power supply unit 15 , a keyboard input unit 20 , a display unit 25 , a drive unit 35 , a first thermistor 40 , a second thermistor 45 and a microcontroller 30 . The power supply unit 15 is used to provide power for the product; the keyboard input unit 20 is used to input the work control signal; the display unit 25 is used to display the work control signal input by the user; the drive unit 35 is used to perform the cooking operation; the first thermistor 40 and the second thermistor 45 are used to sense the fire occurring inside the heating chamber; and the microcontroller 30 can control the working state of the microwave oven according to whether the fire occurs or not. Wherein the microcontroller 30 has already set a reference resistance value, and the reference resistance value is the reference value when the first thermistor 40 and the second thermi...

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Abstract

The present invention relates to a fire-sensing control method for microwave oven. Said method includes the following steps: first stage, according to the working control signal inputted by user utilizing microwave mode or roasting mode to output heat energy; second stage, after a certain period of time for outputting heat energy, sensing resistance value of temp. sensor placed in the interior of heating chamber; and third stage, if the resistance value sensed by said temp. sensor is reached to standard value, can judge that the fire lakes place in the heating chamber, the power supply can be cut off promptly.

Description

technical field [0001] The present invention relates to a fire perception control method of a microwave oven, in particular to a fire perception control method of a microwave oven which can judge the fire situation in the heating chamber by regularly reading the resistance value of the temperature sensing device inside the heating chamber in microwave mode and barbecue mode . Background technique [0002] In general, a microwave oven is a device that heats food in a heating chamber having a heating space by radiating microwaves generated by an applied power source. This kind of microwave oven has high thermal efficiency, which can greatly shorten the cooking time of food, and can reduce the loss of nutritional value of food in the process of cooking, thawing and heating, and only need to put the food in the container and directly irradiate it when cooking. That's it, so it's very convenient to use. The recently developed microwave ovens are equipped with heaters and blowin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C7/08
Inventor 金圭英
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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