Adjusting method and structure for resonance frequency of demounting type spray head of atomizer

Abstract

The invention discloses an adjusting method and structure for resonance frequency of a demounting type spray head of an atomizer. When electrical connection of assembling or replacing the demounting type spray head of the atomizer on or from a host machine is finished, a microcomputer in the host machine gradually sends out a preset frequency and more than one detection frequency and drives a piezoelectric element on the spray head to work in a detection manner by the signal multiplication of a power amplification unit; a resistor is arranged on an electrical connection line passing through the gap between the power magnification unit and the piezoelectric element, a feedback signal generating unit is used for detecting the change of electric signals at two ends of the resistor, a starting value feedback signal and more than one adjusting valve feedback signal are gradually generated according to the sending of the preset frequency and the detection frequency of the microcomputer, and the feedback signals are output to the microcomputer for comparing or processing; and therefore, the demounting type spray head can be assembled to or replaced from the host machine, the resonance frequency of the piezoelectric element can be simply and automatically adjusted, inconvenience or error caused by manual frequency adjusting and correcting is avoided, and optimal atomization effect is exerted.

Description

technical field [0001] The present invention relates to a detachable spray head that can be assembled or replaced on the main machine, and can automatically adjust the resonance frequency of the piezoelectric element, atomize the liquid agent, and maintain the method and structure at the optimum performance and effect. The invention refers to a method and structure for adjusting the resonant frequency of a detachable spray head of an atomizer. Background technique [0002] Recently, the inhalation drug nebulizer developed by using micro-electromechanical technology can produce extremely fine mist droplets to make the medicine finer and improve the drug absorption effect, and because this nebulizer is easy to carry around, it brings great benefits to patients. Convenience, however, after the atomizer has been atomizing liquid medicine for a long time, the spray head is often prone to clogging. Because it is not easy to clean, there is a spray head of the atomizer that can be ...

AI Technical Summary

Problems solved by technology

[0002] Recently, the inhalation drug nebulizer developed by using micro-electromechanical technology can produce extremely fine mist droplets to make the medicine finer and improve the drug absorption effect, and because this nebulizer is easy to carry around, it brings great benefits to patients. Convenience, however, after the atomizer has been atomizing liquid medicine for a long time, the spray head is often prone to clogging. Because it is not easy to clean, there is a spray head of the atomizer that can be disassembled and replaced, and it also has patient medical care. Advantages of health and safety

[0003] Basically, the sprayer with detachable and replaceable spray head, the technical problem faced when replacing the spray head is the piezoelectric actuator of the spray head, due to the vibration characteristics of the element material or the porous metal orifice sheet. Due to the difference, the operating frequency of the piezoelectric element must be adjusted, otherwise the normal atomization performance cannot be exerted; although the existing technology has solved this problem, such as directly obtaining the feedback signal from the piezoelectric element (vibration sensor) for frequency adjustment solution, but the accuracy of this feedback signal is not high, and it is easy to misjudge; for this reason, the existing patent case such as China Taiwan Announcement No. The (manual) adjustment method of the variable capacitor is used to achieve frequency conversion or adjust the operating frequency of the piezoelectric element. However, the user (consumer) of the nebulizer, without the assistance of an electrical testing instrument, may be affected by the adjustment process. There is no scientific data for reference when tuning, and it is indeed difficult to tune out the best working frequency, and this improvement plan also causes the inconvenience of manual frequency tuning and the trouble of not knowing how to tune the frequency after the spray head is replaced; only the spray head After replacement, the optimum operating frequency of the piezoelectric element can be accurately and automatically and quickly adjusted, so that the atomizer with a detachable spray head can achieve the benefits of the most convenient use and the best performance can be reliably maintained

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