Water heater return water control method

Abstract

The invention discloses a water heater water returning control method. The water heater water returning control method comprises the steps of judging frequently-used water points and not-frequently-used water points in multiple water using points of a water heater, and only conducting water returning on the frequently-used water points when the water temperature of the frequently-used water points is smaller than a first preset value. Firstly, the water using points are distinguished into the frequently-used water points and the not-frequently-used water points, then only the frequently-used water points are subjected to water returning when the water temperature of the frequently-used water points is smaller than the first preset value, but the not-frequently-used water points are not subjected to water returning. In this way, targeted control can be conducted, so that heat energy waste is effectively prevented while water using comfort is ensured.

Description

technical field [0001] The invention relates to the field of water heater backwater control, in particular to a water heater backwater control method. Background technique [0002] There is often a long section of pipeline between the hot water outlet of the water storage tank of the water heater and the user's water point. This pipeline will dissipate heat to the environment so that the hot water in the pipeline cools down. When the user uses water for a long time after the last time, because the water in the pipeline becomes cold, a large part of the water needs to be drained until the hot water in the water tank reaches the water point, wasting water resources and user time. [0003] At present, most hot water generators have built-in water return function or external water return device in the project. When the temperature at the user’s water point is detected to be lower than a set value, the return water pump is automatically turned on to send the hot water in the wate...

AI Technical Summary

Problems solved by technology

However, this water return method only controls the water return action by detecting the water temperature at the water point. When the water temperature drops below a set value, the return water pump is started to return water to the entire water system. The biggest disadvantage is that it cannot The water consumption of different water points is differentiated. In general, all return points are returned to water, which increases heat dissipation and wastes energy. This is one of the reasons why users often criticize the energy consumption of air source water heaters.

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