Ultrasonic humidifier with overheat self-locking function

Abstract

The invention relates to an ultrasonic humidifier with an overheat self-locking function, comprising a reed switch, a mist quantity regulating circuit, an oscillating circuit, and indicating circuit, a fan driving circuit and a temperature control self-locking circuit. Temperature parameters of a humidifier are collected and compared to control the working states of the mist quantity regulating circuit and the indicating circuit, if the temperature parameters reach a set value, the mist quantity regulating circuit is controlled not to supply a bias voltage, the indicating circuit is controlled to display corresponding information, and the temperature control self-locking circuit per se is subjected to self-lock; and if the temperature parameters do not reach the set value, the temperature control self-locking circuit does not influence the mist quantity regulating circuit and the indicating circuit. In the invention, when a machine lacks of water, the reed switch is switched off, the mist quantity regulating circuit cannot work normally, meanwhile, the fan driving circuit does not work either, the indicating circuit displays corresponding information, and the temperature control self-locking circuit has no influence to the indicating circuit; and when the reed switch is switched on, the mist quantity regulating circuit and the indicating circuit are controlled by the reed switch and simultaneously controlled by the temperature control self-locking circuit.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to an ultrasonic humidifier. Background technique [0002] Due to its good humidification effect, ultrasonic humidifier has been widely used and generally recognized, and after years of development, the product has gradually entered a mature stage. However, due to the large amount of humidification, there is a common defect in ultrasonic humidifiers, that is, the device generates serious heat; in addition, human faults, such as foreign objects stuck in magnetic components, can also cause dry burning. Existing solutions include: ①Using water to cool naturally, which is not efficient and reliable; ②Using one-time temperature protection fuses, which cannot be used when the fuses are damaged; ③Using recoverability This method will protect the thermostat when it is overheated, but without the user’s knowledge, the machine will dry intermittently, which will not only burn ou...

AI Technical Summary

Problems solved by technology

[0005] The utility model solves the problem of overheating protection of the ultrasonic humidifier. When the machine is short of water, the dry reed switch is disconnected, the mist volume adjustment circuit will not work normally, and the fan drive circuit will not work at the same time. The indicating circuit will display corresponding information, and the temperature control The self-locking circuit has no effect on it; when the dry reed switch is closed, the fog volume adjustment circuit and indicating circuit are controlled by the dry reed switch, and at the same time controlled by the temperature control self-locking circuit

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