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公开(公告)号：US4319110A
公开(公告)日：1982-03-09
申请号：US152421
申请日：1980-05-22
CPC分类号： H05B6/6432 , G01N33/0063 , H05B6/6458
摘要： A microwave oven includes a gas sensor for detecting the concentration of gas developed from a foodstuff disposed in an oven cavity. When the cooking operation is conducted to a desired level, the gas concentration reaches a preselected level and, hence, an output signal of the gas sensor shows a predetermined output level at which the microwave generation is terminated. An abnormal condition detection circuit is provided for detecting an abnormally high resistance created in the gas sensor due to, for example, disconnection of a warming heater included in the gas sensor. When an abnormal condition is detected by the abnormal condition detection circuit, the microwave generation is terminated and an alarm display is conducted to inform the operator of the abnormal condition.
摘要翻译： 微波炉包括气体传感器，用于检测从设置在烤箱腔中的食品产生的气体的浓度。 当烹饪操作进行到期望水平时，气体浓度达到预选的水平，因此气体传感器的输出信号显示微波产生终止的预定输出水平。 提供了一种异常状态检测电路，用于检测气体传感器中产生的异常高电阻，例如由于气体传感器中包括的加温加热器的断开而导致的。 当异常状态检测电路检测到异常情况时，终止微波生成，进行报警显示，通知操作者异常状态。
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公开(公告)号：US4853519A
公开(公告)日：1989-08-01
申请号：US167101
申请日：1988-03-11
申请人： Seiji Tanaka , Hideshi Nakagawa
发明人： Seiji Tanaka , Hideshi Nakagawa
IPC分类号： A47J31/047 , F24C7/08 , G05D23/24 , H05B1/02
CPC分类号： A47J31/047 , G05D23/1902 , G05D23/24 , Y10T307/773
摘要： A heating apparatus that utilizes a heating member for heating a desired subject detects the temperature of the subject being heated. This apparatus further generates a plurality of preset reference set points, compares these reference signals with the detected temperature. An energizing control circuit controls the supply of electricity to the heating member in accordance with the comparison result. The apparatus retains the signal generated from the comparison result, and as a result of this signal, changes the reference set point to cause the apparatus to heat at a new temperature setting.
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