Automatic operation device for range hood
专利汇可以提供Automatic operation device for range hood专利检索，专利查询，专利分析的服务。并且PURPOSE: To perform an automatic operation of a range hood with an inexpensive device which controls operation with high accuracy and without faulty operation to be caused by change in outdoor temperatures, by providing a driving circuit which operates a range hood in response to the output signals from a microcomputer.
CONSTITUTION: A triac 6 is interposed between an output part of a microcomputer 4 and a motor 7 for a range hood. Usual variation in outdoor and room air temperatures is slow. Therefore, variation in conductivity characteristics of a detecting element 1 is small and a degree of said vatiation is processed by the microcomputer 4, where operation instructions are not sent to the triac 6, as a result, the motor 7 is not driven. Only when gas or electric heat sources are used in a kitchen etc., a range hood is operated automatically, thus enabling an operation control of high accuracy. In such a manner as described above, a simple control circuit can be formed, by using a detecting circuit having a detecting element, conductivity characteristics of which vary in response to heat, and a microcomputer; therefore, an inexpensive device which performs operation control of a range hood with high accuracy and without faulty operation can be provided.
COPYRIGHT: (C)1987,JPO&Japio，下面是Automatic operation device for range hood专利的具体信息内容。
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