专利汇可以提供Pyroelectric type steam sensor and high-frequency heater with pyroelectric type sensor专利检索,专利查询,专利分析的服务。并且PURPOSE: To detect a polarization current by a thermal contact by forming one of the ceramics electrodes having a pair of electrodes facing each other on a plate body having a heat transfer characteristic as a turning back electrode across the 1st face and a part of the 2nd face of the ceramics.
CONSTITUTION: There is a heat transfer in order of the plate body 2 → an adhesive agent 7 → pyroelectric element ceramics 5 when the steam having heat comes into contact with the heat transferable plate body 2 of the pyroelectric type steam sensor 1. The ceramics 5 which is disposed with the one of the electrodes as the turning back electrode 3 across the 1st face and a part of the 2nd face of the ceramics 5 and is disposed with the other electrode 4 on the 2nd face of the ceramics 5 generates the polarization current by the pyroelectric effect according to the heat transferred therein and the presence or absence of the steam input to the plate body 2 is discriminated according to this polarization current. The electrical contact of the plate body 2 and the pyroelectric element including the electrodes 3, 4 and the ceramics 5 is interrupted by using the one of the electrodes as the turning back electrode 3. The polarization current generated by the pyroelectric effect corresponding to the heat change is detected by the thermal contact even if the electrical contact is not maintained from the beginning.
COPYRIGHT: (C)1990,JPO&Japio,下面是Pyroelectric type steam sensor and high-frequency heater with pyroelectric type sensor专利的具体信息内容。
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