Water heater and its control method

Abstract

The invention discloses a water heater and a control method thereof, which relate to the technical field of hot water engineering. The water heater comprises: an inner container; an electric heating element arranged in the inner container; an anode arranged in the inner container and insulated from the inner container device, the anode device at least includes a first anode device and a second anode device; a control unit capable of controlling the operation of the electric heating element, the control unit includes: a sampling module electrically connected to the first anode device and the second anode device and a sampling module The MCU module is electrically connected, the sampling module is used to collect the electrical signal between the first anode device and the second anode device, the MCU module is used to receive the electrical signal for judgment, and when the electrical signal meets the preset condition, the control unit controls the electrical signal The heating element stops working and / or an alarm is issued, which can effectively prevent the water heater from being in a dry state.

Description

technical field [0001] The invention relates to the technical field of hot water engineering, in particular to a water heater and a control method thereof. Background technique [0002] In the water heater, in order to prevent the electric heating element in the water heater from being damaged due to dry heating, a device is usually installed to detect the water level in the inner tank of the water heater, so that the water heater can judge the water level in the inner tank Whether it meets the requirements, and then controls whether to continue heating the water in the inner tank. [0003] Chinese patent CN201401928Y discloses a water heater, which includes an inner tank, a heating tube, and a flange for fixing the heating tube on the inner tank, and also includes: a water level electrode and a reference electrode fixed on the water heater; used to control the heating tube The processing unit is energized or de-energized, and the water level electrode and the reference ele...

AI Technical Summary

Problems solved by technology

In the above-mentioned water heater, two parts, the water level electrode and the reference electrode, which are specially used to detect the water level, need to be installed to realize the function of water level detection, which increases the number of parts in the entire water heater. In the case of realizing the above functions, the structure of the water heater is not simple enough.

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