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US 12,613,055 B2Granted
Hot water supply apparatus
AssigneeRinnai Corporation
InventorChihiro Nagahama
Life of this patent
Estimating the term…
Abstract
In a hot water supply apparatus including a heat exchanger to which water heated by renewable energy or waste heat from other heat sources is supplied, a controller performs an intermittent combustion control in which combustion and combustion stoppage in a burner are repeated as a condition in which a water supply temperature exceeds a predetermined upper limit of the water supply temperature. In the intermittent combustion control, a combustion fan is caused to operate during the combustion and to at least temporarily, preferably always, operate during the combustion stoppage.
Claims5
A hot water supply apparatus, comprising,
- a burner;
- a combustion fan which supplies air for combustion to the burner;
- a heat exchanger which is heated by a combustion gas generated by combustion of the burner to supply hot water;
- a water supply temperature sensor which detects a water supply temperature which is a temperature of water supplied to the heat exchanger;
- and
- a controller
- wherein the controller is configured to perform an intermittent combustion control which causes the combustion and combustion stoppage of the burner to be repeated as a condition in which the water supply temperature detected by the water supply temperature sensor exceeds a predetermined upper limit of the water supply temperature during a hot water supply operation in which the water is caused to flow in the heat exchanger, and
- wherein the intermittent combustion control causes the combustion fan to operate not only during the combustion, but also at least temporarily during the combustion stoppage.
5 more elements
Dependencies are inferred from the claim text.