Imperfect combustion detecting device
AssigneeRinnai Corporation
InventorHideo OKAMOTO
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Abstract
An imperfect combustion detecting device includes a destructive current supplying means which supplies, under a condition that it is determined by a useful life determining means that a deterioration status corresponding value matches a use limit value, destructive current to a sensor in order to melt down a part of a circuit that configures the sensor. When it is determined that the sensor is no longer capable of performing a normal CO level detecting function, the sensor is destroyed to the extent rendering the CO level detecting function of the sensor lost to an unrecoverable level.
Claims12
An imperfect combustion detecting device comprising:
- a sensor which detects, when being energized, a CO level in combustion gas as generated at a burner in a combustion apparatus;
- a useful life determining means which compares a use limit value, which is a value corresponding to a predetermined probable useful life of the sensor and being stored in a memory section, with a deterioration status corresponding value, which is a value inputted depending on changes in deterioration status of the sensor, in order to determine as to whether the deterioration status corresponding value matches the use limit value;
- and
- a destructive current supplying means which supplies, under a condition in which it is determined by the useful life determining means that the deterioration status corresponding value matches the use limit value, destructive current to the sensor in order to destroy a circuit that configures the sensor.
Dependencies are inferred from the claim text.