Nebulizing driving apparatus and nebulizing system

Patent metadata

Field	Value
Publication number	US-2016240767-A1
Application number	US-201514887798-A
Country	US
Kind code	A1
Filing date	Oct 20, 2015
Priority date	Feb 16, 2015
Publication date	Aug 18, 2016
Grant date	—

Abstract

A nebulizing driving apparatus is used to drive a piezoelectric material of a nebulizing module. The nebulizing driving apparatus includes a driving circuit, a control circuit and a feedback circuit. The feedback circuit detects an electrical data fed back from the piezoelectric material and sends the electrical data to the control circuit when the control circuit is configured to control the driving circuit to drive the piezoelectric material with a driving frequency. According to the electrical data, the control circuit is configured to control the driving circuit to drive the piezoelectric material with a working frequency.

First claim

What is claimed is:

1 . A nebulizing driving apparatus used to drive a piezoelectric material of a nebulizing module, the nebulizing driving apparatus comprising:
a driving circuit electrically connected to the piezoelectric material; a control circuit electrically connected to the driving circuit; and a feedback circuit electrically connected to the driving circuit, the control circuit and the piezoelectric material, wherein the feedback circuit detects an electrical data fed back from the piezoelectric material and sends the electrical data to the control circuit when the control circuit is configured to control the driving circuit to drive the piezoelectric material with a driving frequency; according to the electrical data, the control circuit is configured to control the driving circuit to drive the piezoelectric material with a working frequency.

2 . The nebulizing driving apparatus in claim 1 , wherein the nebulizing module further comprises a liquid chamber connected to the piezoelectric material; a liquid in the liquid chamber is nebulized when the driving circuit drives the piezoelectric material.

3 . The nebulizing driving apparatus in claim 1 , wherein the feedback circuit detects a plurality of the electrical data fed back from the piezoelectric material in accordance with a plurality of different driving frequencies and sends the electrical data to the control circuit when the control circuit is configured to control the driving circuit to drive the piezoelectric material with the different driving frequencies; according to the electrical data, the control circuit is configured to determine the working frequency.

4 . The nebulizing driving apparatus in claim 3 , wherein the control circuit selects the driving frequency in accordance with a maximum of the electrical data as the working frequency.

5 . The nebulizing driving apparatus in claim 4 , wherein the control circuit selects a current driving frequency as the working frequency when the electrical data in accordance with the current driving frequency is greater than the electrical data in accordance with a previous driving frequency and is greater than the electrical data in accordance with a next driving frequency; the next driving frequency is greater than the current driving frequency; the current driving frequency is greater than the previous driving frequency.

6 . The nebulizing driving apparatus in claim 5 , wherein the electrical data in accordance with the working frequency is a maximum of a plurality of current values when the electrical data are the current values.

7 . The nebulizing driving apparatus in claim 5 , wherein the electrical data in accordance with the working frequency is a maximum of a plurality of voltage values when the electrical data are the voltage values.

8 . The nebulizing driving apparatus in claim 5 , wherein the control circuit calculates a plurality of current values multiplied by a plurality of voltage values in accordance with the current values respectively to obtain a plurality of power values when the electrical data are the current values and the voltage values in accordance with the current values; the control circuit selects the driving frequency in accordance with a maximum of the power values as the working frequency.

9 . The nebulizing driving apparatus in claim 5 , wherein after the control circuit controls the driving circuit to drive the piezoelectric material with the working frequency, if the feedback circuit detects that the electrical data fed back from the piezoelectric material is less than or greater than the maximum of the electrical data an offset over a predetermined time, the control circuit controls the driving circuit to stop driving the piezoelectric material.

10 . The nebulizing driving apparatus in claim 5 , wherein the feedback circuit comprises:
a voltage detection sub-circuit electrically connected to the driving circuit, the control circuit and the piezoelectric material; and a current detection sub-circuit electrically connected to the control circuit and the piezoelectric material.

11 . A nebulizing system comprising:
a nebulizing driving apparatus; and a nebulizing module electrically connected to the nebulizing driving apparatus, wherein the nebulizing module comprises: a piezoelectric material electrically connected to the nebulizing driving apparatus, wherein the nebulizing driving apparatus comprises: a driving circuit electrically connected to the piezoelectric material; a control circuit electrically connected to the driving circuit; and a feedback circuit electrically connected to the driving circuit, the control circuit and the piezoelectric material, wherein the feedback circuit detects an electrical data fed back from the piezoelectric material and sends the electrical data to the control circuit when the control circuit is configured to control the driving circuit to drive the piezoelectric material with a driving frequency; according to the electrical data, the control circuit is configured to control the driving circuit to drive the piezoelectric material with a working frequency.

12 . The nebulizing system in claim 11 , wherein the nebulizing module further comprises a liquid chamber connected to the piezoelectric material; a liquid in the liquid chamber is nebulized when the driving circuit drives the piezoelectric material.

13 . The nebulizing system in claim 11 , wherein the feedback circuit detects a plurality of the electrical data fed back from the piezoelectric material in accordance with a plurality of different driving frequencies and sends the electrical data to the control circuit when the control circuit is configured to control the driving circuit to drive the piezoelectric material with the different driving frequencies; according to the electrical data, the control circuit is configured to determine the working frequency.

14 . The nebulizing system in claim 13 , wherein the control circuit selects the driving frequency in accordance with a maximum of the electrical data as the working frequency.

15 . The nebulizing system in claim 14 , wherein the control circuit selects a current driving frequency as the working frequency when the electrical data in accordance with the current driving frequency is greater than the electrical data in accordance with a previous driving frequency and is greater than the electrical data in accordance with a next driving frequency; the next driving frequency is greater than the current driving frequency; the current driving frequency is greater than the previous driving frequency.

16 . The nebulizing system in claim 15 , wherein the electrical data in accordance with the working frequency is a maximum of a plurality of current values when the electrical data are the current values.

17 . The nebulizing system in claim 15 , wherein the electrical data in accordance with the working frequency is a maximum of a plurality of voltage values when the electrical data are the voltage values.

18 . The nebulizing system in claim 15 , wherein the control circuit calculates a plurality of current values multiplied by a plurality of voltage values in accordance with the current values respectively to obtain a plurality of power values when the electrical data are the current values and the voltage values in accordance with the current values; the control circuit selects the driving frequency in accordance with a maximum of the power values as the working frequency.

19 . The nebulizing system in claim 15 , wherein

Assignees

• Delta Electronics Inc

Inventors

• Ma I-Chen
• Chen Tien-He
• Shih Yu-Jia
• Chang Chih-Ching
• Lin Jung-Yu

Classifications

• B05B17/0669

  Excitation frequencies · CPC title

• B05B12/081 Primary

  responsive to the weight of a reservoir or container for liquid or other fluent material; responsive to level or volume of liquid or other fluent material in a reservoir or container · CPC title

• B05B17/0607

  generated by electrical means, e.g. piezoelectric transducers · CPC title

• H01L41/09

  Electricity · mapped topic

• H01L41/042 Primary

  Electricity · mapped topic