Water heater control method and system

Abstract

The invention belongs to the field of household appliances, and particularly relates to a water heater control method and system. The method includes the steps of receiving a signal for hot water using, obtaining the temperature value of water in a hot water outlet pipe through a temperature detection element, judging whether the temperature value is smaller than a preset temperature threshold value or not, sending the water in the hot water outlet pipe back to a water tank if the temperature value is smaller than the preset temperature threshold value, and supplying the water in the hot water outlet pipe to users for use if the temperature value is not smaller than the preset temperature threshold value. According to the water heater control method and system, after the signal for hot water using is received, the temperature value of the water in the hot water outlet pipe is obtained, and the obtained temperature value is compared with the preset temperature threshold value to decide whether to open a water pump of a water return system or not, so that the temperature of the water flowing out of the hot water outlet pipe and the temperature of hot water in the upper portion of the water tank are made to be the same; the users can conveniently adjust the temperature of water, and the temperature of water is prevented from being suddenly high and suddenly low; meanwhile, the water using comfort of the users is improved, and the aims of saving energy and water are achieved.

Description

technical field [0001] The invention belongs to the field of household appliances, and in particular relates to a water heater control method and system. Background technique [0002] The installation point of the water tank of the air energy water heater is generally far away from the bathroom, and the hot water outlet pipe is long. When using it, the cold water in the outlet pipe must be drained before the hot water can be discharged. Due to the change of the water temperature, it takes a long time to adjust the water temperature, which is poor in comfort and wasteful. water resources. [0003] At present, there are also air energy heat pump water heaters with water return function, but the water return function needs to be turned on and off before the hot water can be returned, which is inconvenient to operate, and a water return system needs to be added independently on the water tank, the system is complex and difficult to install convenient. In addition, some water h...

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Problems solved by technology

[0004] The embodiment of the present invention provides a water heater control method and system, aiming to solve the problem of wasting a lot of heat energy in the prior art

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