Energy-saving electric water heater

Abstract

The invention discloses an energy-saving electric water heater, which comprises one or more heaters, a water storage trough, a plurality of temperature sensors and a microcomputer controller, wherein the heaters are used for heating the cool water to hot water; the water storage trough is used for storing the hot water; the temperature sensors are used for detecting the temperature of the water in pipelines of different areas of the electric water heater; and the microcomputer controller is used for receiving a water temperature signal and for controlling at least one of the heaters to output the power. The energy-saving electric water heater can reduce the consumption of the electric energy, can store sufficient hot water and can instantly supply hot water.

Description

technical field [0001] The invention relates to an electric water heater, in particular to an energy-saving electric water heater capable of reducing power consumption, having sufficient hot water storage capacity and capable of providing hot water in real time. Background technique [0002] Existing electric water heaters are divided into storage type electric water heaters and instantaneous electric water heaters. The water storage type electric water heater stores hot water in a water storage tank, and the user turns on the faucet to mix the hot water and cold water into warm water at a suitable temperature. The disadvantage is that when the water temperature in the water storage tank is lower than a threshold value, the electric water heater will start the heating pipeline in the water storage tank to heat the water to the rated temperature, such as 65°C, or lead the water out of the water storage tank to be heated by the heater. Return to the water storage tank, which ...

AI Technical Summary

Problems solved by technology

The disadvantage is that when the water temperature in the water storage tank is lower than a threshold value, the electric water heater will start the heating pipeline in the water storage tank to heat the water to the rated temperature, such as 65°C, or lead the water out of the water storage tank to be heated by the heater. Return to the water storage tank, which will consume electricity and increase electricity bills, and the outside of the water storage tank needs to be covered with multiple layers of heat insulation materials

In addition, other types of storage-type electric water heaters set the temperature of the water storage tank at a fixed temperature, such as 65°C, at any time and regardless of the seasons, and set a heating pipeline in the water storage tank to directly heat the cold water. Water heaters consume considerable electricity and cause poor thermal circulation

[0003] In terms of instant electric water heaters, when the faucet is turned on, a large amount of electricity is required to heat the cold water instantly, and the amount of hot water output is also small, which not only consumes a lot of electricity, but also cannot provide sufficient hot water

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