Electric water heater with solar-photovoltaic direct heating function

Abstract

The invention discloses an electric water heater with a solar-photovoltaic direct heating function. The electric water heater comprises a water tank, a heating part and a controller; the water tank comprises a cold water inlet pipe and a hot water outlet pipe, an inner container is arranged in the water tank, and the heating part arranged in the inner container comprises an alternating-current heating portion and a photovoltaic direct-current electric heating portion; the alternating-current heating portion comprises an alternating-current electric heating pipe and an alternating-current heating switch, the photovoltaic direct-current heating portion comprises a direct-current electric heating pipe, a photovoltaic direct-current heating switch and a solar photovoltaic cell, a direct-current electric heater is connected with an outdoor solar photovoltaic panel through a connecting wire, and the controller controls the alternating-current heating switch and the photovoltaic direct-current heating switch; a water temperature and water level sensor is arranged in the water tank and connected with the controller, and a loop connecting the solar photovoltaic panel with the controller is provided with a voltage detecting device; a flow switch is installed at the cold water inlet of the water tank and connected with the controller. According to the electric water heater with the solar-photovoltaic direct heating function, the solar energy resources are fully utilized, city power usage is reduced to the maximum limit, hot water can be quickly supplied, and use is more convenient.

Description

technical field [0001] The invention relates to an electric water heater, in particular to an electric water heater with solar photovoltaic direct heating, and belongs to the technical field of electric water heater applications. Background technique [0002] During the use of electric water heaters, there is a constant temperature heating mode, that is, to ensure that users can use hot water at any time, the control logic is designed as constant temperature heating. At the same time, electric water heaters generally use municipal alternating current to directly heat the water in the electric heating tube, and this heating method will consume a lot of commercial energy. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an electric water heater with solar photovoltaic direct heating, which uses solar energy to supplement the heat loss of the constant temperature heating of the electric water heater to achieve the pu...

AI Technical Summary

Problems solved by technology

[0002] During the use of electric water heaters, there is a constant temperature heating mode, that is, to ensure that users can use hot water at any time, the control logic is designed as constant temperature heating. state, resulting in unnecessary waste of energy; at the same time, electric water heaters generally use the city's alternating current to directly heat the water in the electric heating tube, and this heating method will consume a lot of city power energy

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