Water heater and controlling method thereof

Abstract

The invention relates to a water heater and a controlling method thereof. The water heater comprises a combustor, a heat exchanger, a water inlet pipe and a water outlet pipe, wherein the water inletpipe and the water outlet pipe communicate with the inlet end and the outlet end of the heat exchanger respectively, the combustor is used for combusting to generate flue gas exchanging heat with water in the heat exchanger, the water heater further comprises a water storage mechanism and a pressurization mechanism, the water storage mechanism communicates with the water inlet pipe, the pressurization mechanism communicates with the water storage mechanism, when a water using point does not have an input signal and the temperature of water in the water outlet pipe is smaller than a first preset threshold value, the water inlet pipe is disconnected from a water source, and the pressurization mechanism controllably provides a first acting force enabling the water in the water outlet pipe toflow into the water storage mechanism through the heat exchanger and the water inlet pipe. According to the water heater and the controlling method thereof, when the water heater is used next time, itcan be guaranteed that the temperature of the water flowing out of the water outlet pipe is larger than or equal to the first preset threshold value, and therefore the water heater achieves a zero cold water function.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a water heater and a control method thereof. Background technique [0002] Along with economic development and social progress, water heaters appear in people's daily life. A water heater refers to a device that raises the temperature of cold water into hot water within a certain period of time through various physical principles. According to different principles, it can be divided into electric water heaters, gas water heaters, solar water heaters, magnetic energy water heaters, air energy water heaters and heating water heaters. Among them, gas water heaters are widely used in people's daily life. [0003] Since there is a certain distance between the water point and the water heater, every time you use hot water, you need to drain the cold water in the pipeline before the hot water can flow out. This not only reduces the user experience, but also causes a wa...

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Problems solved by technology

[0005] Based on this, it is necessary to provide a water heater and its control method that can realize the zero cold water function and have a simple structure in order to solve the problem that the structure of the water heater is complicated in order to realize the zero cold water function

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