Aerodynamic vibration power-generation device

• US 8,102,072 B2
• Filed: 12/31/2008
• Issued: 01/24/2012
• Est. Priority Date: 12/31/2008
• Status: Active Grant

• Current Assignee: Kuei-Sheng Tsou
• Original Assignee: Kuei-Sheng Tsou
• Inventors: Tsou, Kuei-Sheng
• Primary Examiner(s): Waks, Joseph
• Application Number:
  US12/346,880
• Publication Number:
  US 20100164231A1
• Time in Patent Office: 1,119 Days
• Field of Search: 290/55
• US Class Current: 290/55
• CPC Class Codes: F03D 5/00 Other wind motors controlling thereof F03D7/00
• CPC Class Codes: F03D 5/06 the wind-engaging parts swinging to-and-fro and not rotating
• CPC Class Codes: F05B 2220/709 Piezoelectric means
• CPC Class Codes: F05B 2260/407 through piezoelectric conversion
• CPC Class Codes: H02N 2/185 using fluid streams
• CPC Class Codes: Y02E 10/70 Wind energy
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction

Abstract

An aerodynamic vibration power-generation device is provided, including at least a brace, and at least a blade. The blade is attached to the brace at least with one side. The blade is an aerodynamic vibration element, with at least an embedded piezoelectric transducer. The piezoelectric transducer embedded in the blade includes related circuitry for electrically connecting to a load unit. When the airflow passes along the surfaces of the blade, the difference between the air speeds on both sides of the blade will generate a pressure difference on the surfaces of the blade, according to Bernoulli'"'"'s Principle, and the pressure difference will cause the blade to deform and vibrate. The fluttering and the oscillation of the blade caused by the continuously changing airflow speeds will cause the embedded piezoelectric transducer to generate electricity.

Claims

1. An aerodynamic vibration power-generation device, comprising:

at least a brace; and

at least a blade, with at least one side attached to said brace, being an aerodynamic vibration element, having at least a piezoelectric transducer embedded inside said blade with areas of said blade extending directly above and below said piezoelectric transducer;

said embedded piezoelectric transducer further having related circuitry electrically connected to a load unit;

wherein when airflow passes along two sides of said blade, a difference between air speed on two surfaces of said blade generates a pressure difference, and continuously changing air speed generates a continuous pressure difference to cause said blade to deform and vibrate, which makes said embedded piezoelectric transducer deform and vibrate to generate electric current.

2. The device as claimed in claim 1, wherein said blade has the functionality of airflow spoiling and fluttering.

3. The device as claimed in claim 1, wherein only a part of said blade embeds said piezoelectric transducer.

4. The device as claimed in claim 1, wherein the shape of said embedded piezoelectric transducer is similar to the shape of said blade.

5. The device as claimed in claim 1, wherein the shape of said embedded piezoelectric transducer is identical to the shape of said blade.

6. The device as claimed in claim 1, wherein the shape of said embedded piezoelectric transducer is different from the shape of said blade.

7. The device as claimed in claim 1, wherein said two surfaces of said blade are identical.

8. The device as claimed in claim 1, wherein said two surfaces of said blade are non-identical.

9. The device as claimed in claim 1, wherein said two surfaces of said blade are smooth.

10. The device as claimed in claim 1, wherein said two surfaces of said blade are rough.