WATER HEATER AND A METHOD OF PREVENTING THE WATER HEATER FROM EMPTY BOILING
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United States of America Patent
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Apr 24, 2014
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Oct 18, 2013
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Abstract
A water heater, which includes a water pipe, a combustor, and a dry-boiling protector. The dry-boiling protector includes a first sensor, a second sensor, and a controller. The first sensor senses a resistance of water in the water pipe, and the second sensor senses a flow rate of the water in the water pipe. The controller is electrically connected to the first sensor and the second sensor to stop the combustor to heat water when a resistance sensed by the first sensor is higher than a critical resistance for a predetermined period, and a flow rate sensed by the second sensor is not zero.
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