Water heating device, control method thereof and water dispenser

Abstract

The invention discloses a water heating device, a control method thereof and a water dispenser. The water heating device comprises a water tank, a pre-heater, a heater, a water pump, a control valve, a temperature sensor and a controller, wherein the pre-heater is communicated with the water tank, the heater is provided with an inlet and an outlet, the inlet of the heater is communicated with the pre-heater, the water pump is connected between the water tank and the inlet of the heater, the control valve is connected between the water tank and the inlet of the heater, the temperature sensor is arranged on the heater, and the controller is connected with the temperature sensor and the water pump, and controls rotating speed of the water pump according to a water temperature detecting value of the temperature sensor. According to the water heating device of the embodiment, the output water temperature can be adjusted in a stepless mode, and the water heating device has the advantages of being large in hot water output amount, high in heating efficiency, small in generated steam amount, long in service life, safe, reliable and the like.

Description

technical field [0001] The present invention relates to the technical field of electric appliance manufacturing, in particular to a water heating device, a water dispenser with the water heating device and a control method for the water heating device. Background technique [0002] In the fast-heating water dispenser in the related art, the output flow rate of high-temperature water is relatively small, and the higher the temperature, the smaller the output rate. The flow rate of boiled water is generally only a few hundred milliliters per minute, and the user needs to wait to fill up a cup of boiled water. It takes about one minute, which takes a long time and is very inconvenient to use. [0003] In addition, because the fast-heating water dispenser uses steam to discharge water, not only a large amount of high-temperature water vapor is mixed in the discharged water, which is easy to burn the user, but also the heat loss is large, the heating pipe and its pipeline are eas...

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Problems solved by technology

[0002] In the fast-heating water dispenser in the related art, the output flow rate of high-temperature water is relatively small, and the higher the temperature, the smaller the output rate. The flow rate of boiled water is generally only a few hundred milliliters per minute, and the user needs to wait to fill up a cup of boiled water. About one minute, time-consuming, very inconvenient to use

[0003] In addition, because the fast-heating water dispenser uses steam to discharge water, not only a large amount of high-temperature water vapor is mixed in the discharged water, which is easy to burn the user, but also the heat loss is large, the heating pipe and its pipeline are easy to age, and the controllability of the water level difference is relatively low. Difference

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