Electric water heater

Abstract

The invention discloses an electric water heater. The electric water heater comprises inner containers and a control part, and is characterized in that: the two inner containers are arranged side by side and are connected in series end to end; a group of corresponding heaters are arranged in each inner container; each group of heaters are provided with corresponding temperature sensors; a cold water inlet of one inner container is provided with a flow sensor which is used for sensing water flow to judge whether a system is in a used state or an unused state; the control part comprises a central processing unit (CPU) master control circuit; the temperature sensors corresponding to each group of heaters are connected with the CPU master control circuit; the flow sensor is connected with the CPU master control circuit; the CPU master control circuit is connected with a group of corresponding heaters in each inner container and is used for controlling the two groups of heaters through input signals of all the temperature sensors and the flow sensor; and the two groups of heaters can automatically, alternately and interactively heat water along with the change of the water temperature in the inner containers, and can automatically change the current heating power along with the difference of the current water temperatures of the inner containers, namely heat the water by using lower-grade power at high temperature and heat the water by using higher-grade power at low temperature. The electric water heater has the advantages of reducing waste of redundant heat and effectively saving energy.

Description

technical field [0001] The invention relates to the technical field of electric water heaters, in particular to an electric water heater. Background technique [0002] Existing electric water heaters generally include an inner tank, heating element and power control part, that is, other auxiliary structures. The heating element is installed in the inner tank. This type of electric water heater is limited by capacity when used, resulting in single function or energy consumption. High and small-capacity water heaters can only be used for general washing and a small amount of hot water, while large-capacity water heaters are suitable for bathing. In order to ensure hot water supply throughout the day, the water heater must be kept warm for 24 hours, which will increase power consumption. , if intermittent heating is used, although it can save electric energy, the number of operations will increase, which will bring trouble to the user, and there is a large amount of hot water i...

AI Technical Summary

Problems solved by technology

[0002] Existing electric water heaters generally include an inner container, a heating element and power control parts, namely other auxiliary structures, and the heating element is installed in the inner container. This type of electric water heater is limited by its capacity when used, resulting in single function or energy consumption. High and small-capacity water heaters can only be used for general washing and a small amount of hot water, while large-capacity water heaters are suitable for bathing. In order to ensure hot water supply throughout the day, the water heater must be kept warm for 24 hours, which will increase power consumption. , if intermittent heating is used, although it can save electric energy, the number of operations will increase, which will bring trouble to the user, and there is a large amount of hot water in the tank, which cannot be absolutely kept warm, and a large amount of heat energy will be lost. Ordinary water heaters can only choose a constant temperature state, the seasonal hot water consumption cannot be adjusted, so the energy consumption is high and the use is inconvenient

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