A wireless protection system for electric heating equipment

Abstract

The invention discloses a wireless protection system for electric hot water equipment. The wireless protection system comprises a signal transmitting module and a signal receiving module. The signal transmitting module comprises an inflatable temperature switch and a code hopping signal transmitting circuit. A telescopic gas bag is arranged inside the inflatable temperature switch and filled with gases. A lower electrode plate and an upper electrode plate are sequentially arranged on the gas bag in parallel. The upper electrode plate is connected with a power source VCC. The lower electrode plate is connected with the code hopping signal transmitting circuit. When the temperature of water in the electric hot water equipment is increased, the gas bag expands with heat so as to drive the lower electrode plate to move upwards. When the temperature of the water reaches the alarm temperature, the gas bag expands to make the lower electrode plate make contact with the upper electrode plate, and the code hopping signal transmitting circuit is electrified to work and transmits a wireless code hopping control signal that a main power supply circuit of the electric hot water equipment is required to be switched off. The signal receiving module compares the wireless code hopping control signal with circulating hopping codes inside the signal receiving module after receiving the wireless code hopping control signal, and if codes of the wireless code hopping control signal and the circulating hopping codes are the same, the system is controlled to switch off a main power supply circuit power source.

Description

technical field [0001] The invention relates to the field of electric heating equipment, in particular to a wireless protection system for electric heating equipment. Background technique [0002] Household electric water heaters are generally boiling water kettles, electric kettles, electromagnetic kettles, etc. Electric water heaters in the prior art often also have a switch to prevent dry heating. When the power is bent and deformed at 100°C, the power supply will be disconnected. When there is water in the hot water equipment, the temperature will generally not exceed 100°C. This switch can realize the protection function. However, the temperature will be very high during dry burning, and the temperature controller will cut off the power supply. However, due to the disconnection of the power supply for a period of time, the temperature of the metal piece will drop, and the bimetallic piece will bounce back again to perform the next switching action. It takes a long time ...

AI Technical Summary

Problems solved by technology

But when dry burning, the temperature will be very high, and the temperature controller will cut off the power supply, but because the power supply is disconnected for a period of time, the temperature of the metal piece will drop, and the bimetallic piece will bounce back again to perform the next switching action, so it takes a long time to repeat It will also cause a short circuit in the power supply and the kettle will burn out

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