专利汇可以提供Fume-removing apparatus专利检索,专利查询,专利分析的服务。并且PURPOSE: To obtain a fume-removing apparatus for previously preventing a fire from starting, by a method wherein it is decided that the time when a thermal change rate inside a fume-removing duct, which is detected by an abnormal-detecting sensor, becomes larger than that of normal is in an abnormal state, and a shut-off device is actuated by a controller and an exhaust fan is also stopped.
CONSTITUTION: In a suction opening 13 for a fume-removing duct 17, an abnormal- detecting sensor 18, for instance, composed of a thermal sensor is located, and a temperature in the fume-removing duct is detected, and the signal thereof is transmitted to a controller 22. In cooking, when a cooking utensil 23 without water is burned or cooking oil for deep-fried food is heated and left as it is, it becomes in overheat. At that time, the temperature of air sucked in the fume-removing duct 17 becomes suddenly high, and the abnormal-detecting sensor 18 in the suction opening 13 outputs an abnormal signal, and by the output thereof, a controller 22 decides that it is in the abnormal state and actuates a shut-off device 21 forcibly and shuts the supply of gas and stops the operation of an exhaust fan 16. As the result of it, the overheat in the fume-removing duct is restrained and a fire can be previously prevented from starting.
COPYRIGHT: (C)1991,JPO&Japio,下面是Fume-removing apparatus专利的具体信息内容。
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