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Microwave oven

A technology of a microcontroller and a driving part, applied in the microwave oven field, can solve the problems of incomplete cooking, small sensing area of ​​a single infrared sensor, and inability to judge the state of food, etc., to achieve the effect of reducing errors

Inactive Publication Date: 2009-09-16
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As mentioned above, in the prior art, only a single infrared sensor is used to determine the temperature inside the cooking chamber. Since the sensing area of ​​a single infrared sensor is small, it is impossible to accurately determine the state of the food with the measured temperature. Food is burnt or undercooked

Method used

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Experimental program
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Embodiment Construction

[0017] Hereinafter, the microwave oven of the present invention will be described in detail with reference to the accompanying drawings and embodiments.

[0018] Such as figure 2 , 3 As shown, the main body of the microwave oven of the present invention is composed of a cooking chamber in which food is put in and heated, and a control chamber in which electrical devices such as magnetrons are installed, and an operating panel capable of controlling the operation of the microwave oven is also provided. A plurality of buttons for inputting an operation signal of the microwave oven and a display unit for displaying the operation signal of the microwave oven are provided on the operation panel.

[0019] Such as figure 2 As shown, an array type infrared sensor (hereinafter referred to as an infrared sensor) composed of a plurality of infrared sensors is installed on one side of the cooking chamber of the microwave oven. That is, it consists of an array of upper sensor rack A1,...

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PUM

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Abstract

The invention provides a microwave oven, which includes a cooking chamber, a tray, a control chamber and a driving device, wherein: a temperature sensing component composed of a plurality of infrared sensor arrays is arranged in the control chamber, and can simultaneously detect a plurality of infrared sensors on the tray. Sensing field: In the control room, there is also a microcontroller connected to the signal input part and the infrared sensor part, and the internal state of the cooking chamber is judged according to the temperature deviation of the multiple sensing fields detected by the temperature sensing part to control the output of heating energy. The device is connected to the driving device including the heater driving part and the magnetron driving part. The driving device receives the heating energy output control signal of the microcontroller, and sends the heat generated by the heater or the microwave of the magnetron driving part to the inside of the cooking chamber. output. The beneficial effect is that the microwave oven can accurately judge the temperature of the food and the internal temperature of the cooking chamber through multiple sensing fields, and it has nothing to do with the position of the food to reduce the error of judging the temperature, and the heating of the food can reach an ideal state.

Description

technical field [0001] The invention relates to a microwave oven, in particular to a microwave oven which measures the temperature of the upper part of the chassis inside the microwave oven into multiple areas at the same time. Background technique [0002] Such as figure 1 As shown, in the prior art, in order to detect the temperature of the food inside the cooking chamber, an infrared sensor 3 as a temperature detection device is used, and the heating temperature is controlled by the temperature detection result of the infrared sensor 3 . As described above, when the temperature inside the microwave oven is measured by a single infrared sensor, only a part of the upper part of the chassis T inside the cooking chamber can be detected. Therefore, when the food is located outside the detectable range, the temperature of the food cannot be accurately measured, and thus, it is impossible to accurately control the heating of the food. [0003] As shown in the figure, the infra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24C7/02F24C7/08
Inventor 李旺林
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD