Title:
COMBUSTION DEVICE
Document Type and Number:
Japanese Patent JP2020118430
Kind Code:
A
Abstract:
To provide a combustion device capable of suppressing combustion stop of a burner caused by a drift phenomenon of a CO sensor.SOLUTION: A fuel gas is combusted by a burner, and a concentration of carbon monoxide contained in a combusted exhaust gas from the burner is measured by a CO sensor. On the basis of a measurement of the CO sensor exceeding a reference value, the combustion in the burner is stopped. Then, a correction for enlargement with the lapse of a combustion time in the burner after execution of zero point calibration of the CO sensor is performed on the reference value. The reference value is corrected to be enlarged as the measurement of the CO sensor is made greater than an actual CO concentration by a drift phenomenon. Therefore, if an actual CO concentration is normal, the measurement of the CO sensor is hard to exceed the reference value, thereby suppressing combustion stop of the burner caused by the drift phenomenon.SELECTED DRAWING: Figure 5
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Inventors:
NAGAHAMA TOMOHIRO
Application Number:
JP2019012622A
Publication Date:
August 06, 2020
Filing Date:
January 28, 2019
Export Citation:
Assignee:
RINNAI KK
International Classes:
F23N5/24
Domestic Patent References:
| JPH0526440A | 1993-02-02 | |||
| JPH1151383A | 1999-02-26 | |||
| JP4458795B2 | 2010-04-28 | |||
| JPS61239153A | 1986-10-24 | |||
| JP2013076483A | 2013-04-25 | |||
| JP2015117865A | 2015-06-25 | |||
| JPH11142360A | 1999-05-28 | |||
| JPH0842848A | 1996-02-16 |
Attorney, Agent or Firm:
Daisuke Mibayashi