MICRO-SPRAY SYSTEM RESONANCE FREQUENCY MODULATION METHOD AND DEVICE

Abstract

A micro-spray system resonance frequency modulation method and device designed to minimize resonance frequency drift during atomization involves using a resonance frequency modulation unit for modulating resonance frequency and nodes, controlling and calibrating resonance frequency, and performing real-time measurement and correction to prevent operating frequency from drifting beyond a preferred operating frequency range, with a view to increasing spray flow and spray area, minimizing effects of ambient factors, and overcoming drawbacks of prior art.

Description

BRIEF DESCRIPTION OF DRAWINGS

The invention can be more fully understood by reading the following detailed description of the preferred embodiments, with reference made to the accompanying drawings, wherein:

FIG. 1A is a schematic diagram of a micro-sprayer actuation element and a sprayer base of a micro-spray system resonance frequency modulation device in accordance with the present invention;

FIG. 1B is a lateral view of the assembly of a micro-spray system resonance frequency modulation device in accordance with the present invention;

FIG. 2 is an exploded view of an embodiment of a micro-spray system resonance frequency modulation device in accordance with the present invention;

FIG. 3 is a schematic diagram of the assembly of a micro-spray system resonance frequency modulation device in accordance with the present invention;

FIG. 4 is a schematic diagram of the assembly of another embodiment of a micro-spray system resonance frequency modulation device in accordance with the present invention; and

FIG. 5 is a flowchart of a micro-spray system resonance frequency modulation method in accordance with the present invention.

Claims

1. A micro-spray system resonance frequency modulation device, comprising: a liquid storage unit;a micro-spray unit for atomizing a liquid in the liquid storage unit by vibration; anda resonance frequency adjustment unit including a resonance frequency adjustment element configured for applying various pressures to the micro-spray unit so as to adjust resonance frequency thereof.

2. The micro-spray system resonance frequency modulation device of claim 1, wherein the resonance frequency adjustment unit adjusts compression levels so as to adjust resonance frequency and nodes of the micro-spray unit, and the resonance frequency adjustment unit further comprises an elastomer for pressing against the micro-spray unit.

3. The micro-spray system resonance frequency modulation device of claim 1, wherein the micro-spray unit further comprises a micro-sprayer actuation element, a micro-nozzle plate, a sprayer upper lid, and a sprayer base.

4. The micro-spray system resonance frequency modulation device of claim 3, wherein the micro-sprayer actuation element further comprises an actuator, an actuator upper electrode, and an actuator lower electrode.

5. The micro-spray system resonance frequency modulation device of claim 4, wherein the actuator is made of one of piezoelectric porcelain and an electrostrictive material.

6. The micro-spray system resonance frequency modulation device of claim 3, wherein the micro-spray unit further comprises a plurality of micro-sprayer actuation elements.

7. The micro-spray system resonance frequency modulation device of claim 1, wherein the resonance frequency adjustment element is a screw configured to adjust load pressure or node variation.

8. The micro-spray system resonance frequency modulation device of claim 1, wherein the resonance frequency adjustment unit further comprises a plurality of resonance frequency adjustment elements.

9. The micro-spray system resonance frequency modulation device of claim 1, wherein the resonance frequency adjustment unit further comprises a resonance frequency detection and control circuit and a control motor.

10. The micro-spray system resonance frequency modulation device of claim 9, wherein the resonance frequency adjustment unit further comprises a plurality of control motors.

11. A micro-spray system resonance frequency modulation method for use in a micro-spray system having a resonance frequency adjustment unit and a micro-spray unit, the micro-spray system resonance frequency modulation method comprising the steps of: (1) measuring the micro-spray system and adjusting the resonance frequency adjustment unit so as to allow atomization-related operating frequency to be consistent with system resonance frequency;(2) driving the micro-spray unit to perform atomization; and(3) detecting resonance frequency of the micro-spray system during atomization in a real-time manner, modulating the resonance frequency adjustment unit whenever the detected resonance frequency exceeds operating frequency of the micro-spray system, such that the resonance frequency of the resonance frequency adjustment unit is consistent with the resonance frequency of the micro-spray system.

12. The micro-spray system resonance frequency modulation method of claim 11, wherein step (1) involves adjusting the overall operating frequency of the micro-spray system such that the system in operation performs atomization to a full extent and is energy-saving.

13. The micro-spray system resonance frequency modulation method of claim 11, wherein the micro-spray unit comprises a micro-sprayer actuation element, a micro-nozzle plate, a sprayer upper lid, and a sprayer base.

14. The micro-spray system resonance frequency modulation method of claim 13, wherein the micro-sprayer actuation element further comprises an actuator, an actuator upper electrode, and an actuator lower electrode.

15. The micro-spray system resonance frequency modulation method of claim 13, wherein step (2) involves driving the micro-sprayer actuation element and the micro-nozzle plate to perform atomization.

16. The micro-spray system resonance frequency modulation method of claim 15, wherein the micro-sprayer actuation element further comprises an actuator, an actuator upper electrode, and an actuator lower electrode.

17. The micro-spray system resonance frequency modulation method of claim 11, wherein the resonance frequency adjustment unit further comprises a resonance frequency adjustment element.

18. The micro-spray system resonance frequency modulation method of claim 11, wherein the resonance frequency adjustment unit further comprises an elastomer.

19. The micro-spray system resonance frequency modulation method of claim 11, wherein the resonance frequency adjustment unit further comprises a resonance frequency detection and control circuit and a control motor.

20. The micro-spray system resonance frequency modulation method of claim 19, wherein step (3) involves detecting the resonance frequency of the micro-spray system in a real-time manner with the resonance frequency detection and control circuit, driving the control motor and adjusting the resonance frequency adjustment unit so as to modulate resonance frequency and node positions.