Protection circuit for preventing atomization sheet and coupler from electrolyzing

Abstract

The embodiment of the invention discloses a protection circuit for preventing electrolysis of an atomization sheet and a coupler, the protection circuit comprises a control panel which is electrically connected with a fan and an upper coupler, and lower couplers which are in one-to-one correspondence with the upper coupler and are in coupling connection with the upper coupler, the lower couplers are connected with a large aluminum piece integrated plate, the large aluminum piece integrated plate is connected with a fan and a power line, and the fan and the power line are electrically connected with the control panel. The power line is connected with a power supply circuit, an upper coupling circuit is arranged in the upper coupler, a lower coupling circuit is arranged in the lower coupler, and the power supply circuit is electrically connected with the upper coupling circuit and the lower coupling circuit. The protection circuit for preventing the atomization sheet and the coupler from electrolyzing prevents the atomization sheet and the coupler from electrolyzing; the service life of the atomization sheet and the coupler is prolonged; compared with other implementation modes, the circuit is more cost-saving, more economical, safer and more reliable, and the service life of a product is prolonged; a non-common-ground power supply design is adopted; power supplies of the atomization part and the control part are mutually independent and do not interfere with each other when the structures are butted and coupled.

Description

technical field [0001] The embodiments of the present invention relate to the field of electronic circuits, in particular to a protection circuit for preventing electrolysis of an atomizing sheet and a coupler. Background technique [0002] Humidifiers are household appliances used to increase space humidity, including ultrasonic humidifiers, electric humidifiers, and pure humidifiers. [0003] At present, most ultrasonic humidifiers generally use butt coupling to connect the control part and the atomizing part. This butt coupling connection can simplify the structure of the ultrasonic humidifier and make it more convenient to use. In an ultrasonic humidifier in the prior art, the switching power supply adopts 34V+12V (or 24V+12V) two-way common ground output, wherein 34V (or 24V) powers the atomizing part, 12V powers the fan and the control circuit. Due to the electromagnetic coupling of the atomization part, the atomizer is in direct contact with the heat sink. At this ti...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a protection circuit to prevent the electrolysis of the atomizing sheet and the coupler, so as to solve the traditional solution proposed in the above background technology. The switching power supply of the humidifier uses 34V+12V two-way common ground output, 34V power supply atomization part, 12V power supply fan And the control circuit, the atomization part is in direct contact with the heat sink due to EMC, causing the heat sink voltage to be 34V, and the atomizer itself has a 34V voltage, which causes the water in contact with it to also carry a 34V voltage. When the structure uses the butt coupling connection method, the control part and the atomizing part will form a circuit due to the accumulation of water molecules between the coupler and the atomizing chamber, which will cause a pressure difference between the atomizing sheet and the coupler, and the atomizing sheet and the coupler will Mutual electrolysis due to the existence of a voltage difference; damage to the atomizer and coupler may easily lead to failure of the atomizer or poor contact of the coupler

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