Electric water heater and constant temperature control device and method thereof

Abstract

The invention provides a constant temperature control device of an electric water heater. The constant temperature control device of the electric water heater comprises a body, a cold water control valve, a hot water control valve, a first temperature detector, a first flow detector and a controller. The body comprises a cold and hot water mixing cavity which is provided with a cold water inlet, a hot water inlet and a water outlet. The cold water control valve is arranged on the cold water inlet, and the hot water control valve is arranged on the hot water inlet. The first temperature detector and the first flow detector are both arranged on the water outlet and used for detecting the outlet water temperature and the outlet water flow. The controller controls the cold water control valve and the hot water control valve according to the outlet water temperature, the outlet water flow, a target outlet water temperature and a target outlet water flow. According to the constant temperature control device of the electric water heater, the outlet water flow can be adjusted, and user requirements can be better met. The invention further provides the electric water heater with the constant temperature control device and a constant temperature control method of the electric water heater.

Description

technical field [0001] The invention relates to the technical field of electrical appliances, in particular to a constant temperature control device and a constant temperature control method for an electric water heater, and an electric water heater with the constant temperature control device. Background technique [0002] At present, ordinary storage-type electric water heaters generally do not have a thermostatic valve, and the ordinary thermostatic valve uses a single motor instead of a manual water mixing valve to adjust the temperature, so the water flow cannot be adjusted. However, since people have higher and higher requirements on the use of electric water heaters, it is hoped that the water flow can be adjusted according to the desired size during bathing. For example, often due to water pressure problems, the outlet water temperature fluctuates, and the water flow fluctuates. In addition, users generally hope that when the water temperature of the electric water ...

AI Technical Summary

Problems solved by technology

In addition, the temperature adjustment device with a mechanical structure disclosed on the electric water heater is more accurate than ordinary water mixing valves, and can also achieve a constant temperature effect, but it is also unable to adjust the outlet water flow

[0003] In a nutshell, at present, electric water heaters can adjust the outlet water temperature through the thermostatic valve, but cannot adjust the outlet water flow.

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