Title: Flame detector
Application Number: 97121312 Application Date: 1997.10.24
Publication Number: 1190768 Publication Date: 1998.08.19
Approval Pub. Date: 2005.07.27 Granted Pub. Date: 2005.07.27
International Classifi-cation: G08B17/117;F23N5/12
Applicant(s) Name: Matsushita Electric Industrial Co., Ltd. Address:
Inventor(s) Name: Umeta Kosuke;Nagai Takeki;Ogino Toshiro
Attorney & Agent: zhang zhengquan
Abstract:
    A pair of reference electrodes and a flame rod are placed in contact with charged particles in a flame produced by a burner. When a voltage is applied between the flame rod and the burner by a power source, a current (Ifr) flows between them due to the flame conductivity. A potential difference (V12) between the pair of reference electrodes is detected by a potential difference detector. The dynamic flame impedance between the pair of reference electrodes is defined as the slope of the Ifr-V12 relationship and is independent of Ifr.
Time: 9
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