Method and device for controlling water temperature

Abstract

The invention discloses a water temperature control method and device. The water inlet valve on the water inlet pipe is opened, the water pump runs and the water flow is heated by a heat exchanger to reach a temperature detection point. The water temperature at the temperature detection point is the outlet water temperature, and the outlet water The temperature is compared with the first set temperature and the second set temperature: when the outlet water temperature is lower than the first set temperature or greater than the second set temperature, the water inlet valve is closed, and the return valve is opened. The water flow continuously circulates between the water pump, water inlet valve, heat exchanger, and return valve until the outlet water temperature is greater than the first set temperature and less than the second set temperature, and the return valve closed, the water inlet valve is opened, and the water flow is discharged from the water outlet pipe; when the outlet water temperature is greater than the first set temperature and lower than the second set temperature, the water flow is discharged from the water outlet pipe, The invention can effectively control the outlet water temperature, avoiding the problem of cold scalding in the outlet water temperature.

Description

technical field [0001] The invention relates to a water temperature control method and device. Background technique [0002] During the use of fast household central hot water gas water heater, the gas water heater stops burning and does not work when the gas water heater runs out of hot water. In the case of overheating and short-term hot water, when the water heater is turned on again, it will take a period of time for the water heater to reach the corresponding temperature from ignition to combustion. It is very inconvenient to use, and it is difficult to grasp the outlet water temperature. Contents of the invention [0003] The technical problem to be solved by the present invention is: a water temperature control method is needed, which can better control the outlet water temperature. [0004] The solution of the present invention to solve its technical problem is: a water temperature control method, open the water inlet valve on the water inlet pipe, the water pump...

AI Technical Summary

Problems solved by technology

[0002] During the use of fast household central hot water gas water heater, the gas water heater stops burning and does not work when the gas water heater runs out of hot water. In the case of overheating and short-term hot water, when the water heater is turned on again, it will take a period of time for the water heater to reach the corresponding temperature from ignition to combustion. It is very inconvenient to use, and it is difficult to grasp the temperature of the water outlet

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