Gas water heater with water cutoff temperature rise prevention function

Abstract

The invention relates to a gas water heater with a water cutoff temperature rise prevention function. The gas water heater comprises a heat exchanger, a main controller, a cold water temperature measuring component, a cold water flow rate sensor, a hot water proportional valve, a water outlet temperature measuring component, a cold water inlet pipe and a hot water outlet pipe, wherein a cold water pipe and a hot water pipe are arranged on the heat exchanger, and the cold water flow rate sensor is arranged on the cold water pipe. The gas water heater has the main technical characteristic that the gas water heater also comprises a bypass pipe, a bypass water proportional valve, a bypass water flow rate sensor, a hot water temperature measuring component and a water cutoff temperature rise controller, wherein the bypass pipe is communicated with the cold water pipe and the hot water pipe, the bypass water proportional valve and the bypass water flow rate sensor are arranged on the bypass pipe, the hot water temperature measuring component is arranged on the hot water pipe, the cold water temperature measuring component is arranged on the cold water pipe or the bypass pipe, and the water cutoff temperature rise controller is electrically connected with the bypass water proportional value, the bypass water flow rate sensor, the hot water temperature measuring component and the main controller. The gas water heater has the characteristics that the water cutoff temperature rise of the gas water heater can be effectively avoided, the outlet water temperature is vey stable, the use comfort is improved, the harm of residual hot water to the health of users is avoided, and the like.

Description

technical field [0001] The invention relates to a gas water heater with no water stop and temperature rise. Background technique [0002] In the prior art, the temperature rise of water stop means that when the water heater is used for a few minutes, the faucet is turned off for 1 minute, and the hot water faucet is turned on again, the temperature of the hot water that comes out is higher than the original temperature. "Instant Water Heater" (GB6932-2001) clearly stipulates that the temperature rise of the water heater should not exceed 18K. [0003] The reason for the temperature rise of the water stoppage is that when the water heater is suspended halfway, the hot water retained in the heat exchanger water pipe will absorb the waste heat of the heat exchanger shell and fins and continue to heat up, causing the water temperature to exceed the set temperature, especially under heavy load. When burning, the water temperature rises more obviously. When the customer starts t...

AI Technical Summary

Problems solved by technology

When the customer starts to use it again in a short period of time, the water heater will discharge the stranded high-temperature hot water first, and the high-temperature hot water will easily cause shoc

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