Title:
燃焼装置
Document Type and Number:
Japanese Patent JP7413145
Kind Code:
B2
Abstract:
To maintain an excess air rate of a fuel-air mixture at a proper value even when air resistance switching means 62 is switched to a high ventilation resistance state, in a combustion device which includes: the air resistance switching means which switches the ventilation resistance of an air supply route 6 at an upstream side of a fan 5; gas quantity adjusting means 74 for adjusting a fuel gas supply quantity; and flame resistance measurement means 9 for measuring the flame resistance, calculates a fuel-air mixture quantity from a fan rotation speed on the basis of a fan characteristic curve corresponding to an exhaust blocking rate calculated by a blocking rate calculation process based on a correlation between the fan rotation speed and a fan current, and controls the gas quantity adjusting means so that the measured flame resistance value becomes the flame resistance value on a reference flame resistance characteristic curve which matches the calculated fuel-air mixture quantity.SOLUTION: A blocking rate calculation process is performed only when air resistance switching means 62 is switched to a small ventilation resistance state.SELECTED DRAWING: Figure 1
Inventors:
Ken Takeuchi
Application Number:
JP2020084932A
Publication Date:
January 15, 2024
Filing Date:
May 14, 2020
Export Citation:
Assignee:
Rinnai Corporation
International Classes:
F23N1/04; F23N5/12
Domestic Patent References:
| JP2015230113A | ||||
| JP2007040697A | ||||
| JP2003028420A | ||||
| JP2017125672A | ||||
| JP2002089838A | ||||
| JP9014654A |
Foreign References:
| WO2011117896A1 |
Attorney, Agent or Firm:
Seika Patent Attorney Corporation
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