Nebulizing driving apparatus and nebulizing system

Patent metadata

Field	Value
Publication number	US-9780286-B2
Application number	US-201514887798-A
Country	US
Kind code	B2
Filing date	Oct 20, 2015
Priority date	Feb 16, 2015
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

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 comprising:
a driving circuit electrically connected to a piezoelectric material of a nebulizing module;
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 control circuit is configured to control the driving circuit to drive the piezoelectric material with a driving frequency,
the feedback circuit is configured to detect an electrical data fed back from the piezoelectric material and to send the electrical data to the control circuit,
the control circuit is configured to control the driving circuit to drive the piezoelectric material with a working frequency based on the electrical data, and
the control circuit is configured to select a current driving frequency as the working frequency if (1) the electrical data corresponding to the current driving frequency is greater than the electrical data corresponding to a previous driving frequency and the electrical data corresponding to the current driving frequency is greater than the electrical data corresponding to a next driving frequency, (2) the next driving frequency is greater than the current driving frequency, and (3) the current driving frequency is greater than the previous driving frequency.

2. The nebulizing driving apparatus in claim 1 , wherein the nebulizing module comprises a liquid chamber connected to the piezoelectric material, and the driving circuit is configured to cause a liquid in the liquid chamber to be nebulized by driving the piezoelectric material.

3. The nebulizing driving apparatus in claim 1 , wherein the driving frequency is one of a plurality of different driving frequencies, and the feedback circuit is configured to:
detect a plurality of the electrical data fed back from the piezoelectric material corresponding to the driving frequencies of the plurality of different driving frequencies; and
send the plurality of electrical data to the control circuit to determine the working frequency.

4. The nebulizing driving apparatus in claim 3 , wherein the control circuit is configured to select the driving frequency by which the piezoelectric element is driven as the working frequency based on a determination that the electrical data of the plurality of electrical data corresponding to the selected driving frequency is a maximum of the plurality of electrical data as the working frequency.

5. The nebulizing driving apparatus in claim 1 , wherein the electrical data corresponding to the working frequency is indicative of a current value, and the electrical data is a maximum of a plurality of current values detected by the feedback circuit.

6. The nebulizing driving apparatus in claim 1 , wherein the electrical data corresponding to the working frequency is indicative of a voltage value, and the electrical data is a maximum of a plurality of voltage values detected by the feedback circuit.

7. The nebulizing driving apparatus in claim 1 , wherein
the control circuit is configured to calculate a plurality of power values based on a plurality of current values detected by the feedback circuit and a plurality of corresponding voltage values detected by the feedback circuit, and
the control circuit is configured to select the driving frequency associated with a maximum of the power values as the working frequency.

8. The nebulizing driving apparatus in claim 1 , wherein the control circuit is configured to control the driving circuit to stop driving the piezoelectric material based on a detection by the feedback circuit that the electrical data fed back from the piezoelectric material is less than or greater than a maximum of the electrical data by an offset amount over a predetermined time.

9. The nebulizing driving apparatus in claim 1 , 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.

10. 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 control circuit is configured to control the driving circuit to drive the piezoelectric material with a driving frequency,
the feedback circuit is configured to detect an electrical data fed back from the piezoelectric material and to send the electrical data to the control circuit,
the control circuit is configured to control the driving circuit to drive the piezoelectric material with a working frequency based on the electrical data, and
the control circuit is configured to select a current driving frequency as the working frequency when (1) the electrical data corresponding to the current driving frequency is greater than the electrical data corresponding to a previous driving frequency and the electrical data corresponding to the current driving frequency is greater than the electrical data corresponding to a next driving frequency, (2) the next driving frequency is greater than the current driving frequency, and (3) the current driving frequency is greater than the previous driving frequency.

11. The nebulizing system in claim 10 , wherein the nebulizing module comprises a liquid chamber connected to the piezoelectric material, and the driving circuit is configured to cause a liquid in the liquid chamber to be nebulized by driving the piezoelectric material.

12. The nebulizing system in claim 10 , wherein the driving frequency is one of a plurality of different driving frequencies, and the feedback circuit is configured to:
detect a plurality of the electrical data fed back from the piezoelectric material corresponding to the driving frequencies of the plurality of different driving frequencies; and
send the plurality of electrical data to the control circuit to determine the working frequency.

13. The nebulizing system in claim 12 , wherein the control circuit is configured to select the driving frequency by which the piezoelectric element is driven as the working frequency based on a determination that the electrical data of the plurality of electrical data corresponding to the selected driving frequency is a maximum of the plurality of electrical data as the working frequency.

14. The nebulizing driving apparatus in claim 10 , wherein the electrical data corresponding to the working frequency is indicative of a current value, and the electrical data is a maximum of a plurality of current values detected by the feedback circuit.

15. The nebulizing driving apparatus in claim 10 , wherein the electrical data corresponding to the working frequency is indicative of a voltage value, and the electrical data is a maximum of a plurality of voltage values detected by the feedback circuit.

16. The nebulizing driving apparatus in claim 10 , wherein
the control circuit is configured to calculate a plurality of power values based on a plurality of current values detected b

Assignees

• Delta Electronics Inc

Inventors

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

Classifications

• 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

• B05B17/0669

  Excitation frequencies · 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