Fan device

Patent metadata

Field	Value
Publication number	US-11293459-B2
Application number	US-201916533163-A
Country	US
Kind code	B2
Filing date	Aug 6, 2019
Priority date	Aug 7, 2018
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

A fan device including high voltage power source, conductive blade, first electrode and a resistance device is provided. Connecting side of the conductive blade is connected to first electric contact of the high voltage power source, and the conductive blade further includes a vibration side, wherein the conductive blade is extended from the connecting side to the vibration side along a first direction. The first electrode electrically connected to the second electric contact of the high voltage power source. The first electrode is disposed on a side of the vibration side of the conductive blade, and located in the vibrating range of the vibration side. The resistance device is connected between the conductive blade and the second electric contact in series.

First claim

The invention claimed is:

1. A Fan device comprising:
a high voltage power source;
a conductive blade, electrically connected to first electric contact of the high voltage power source, wherein the conductive blade includes a connection side and a vibration side, and the first electric contact is connected to the connection side, and the conductive blade is extended along a first direction between the connection side and the vibration side;
a first electrode, electrically connected to second electric contact of the high voltage power source, wherein the first electrode is disposed beside the vibration side and located in vibration range of the vibration side; a resistance device, connected between the conductive blade and the second electric contact in series; and
a frame, configured to fix the connection side of the conductive blade;
wherein when the high voltage power source provides second electric charge to the first electrode via the resistance device, the vibration side of the conductive blade is being attracted by the first electrode until they touched;
the vibration side bounces back after touching the first electrode due to electrical balance, the first electrode then resupplies the second electric charge from the high voltage power source to attract the vibration side, causing the vibration side waving back-and-forth.

2. The fan device of claim 1 , further comprising:
a second electrode, electrically connected to the second electric contact of the high voltage power source,
wherein the second electrode along the first direction remains a distance from the vibration side, and the high voltage power source forms potential difference between the second electrode and the conductive blade so as to generate corona wind transmitting to the second electrode.

3. The fan device of claim 1 , wherein the high voltage power source causes positive or negative corona around the conductive blade.

4. The fan device of claim 1 , wherein the resistance device is a variable resistance and provides a resistance between the conductive blade and the second electric type electrode, and the resistance device is adapted to adjust the magnitude of the resistance so as to control flowing rate of the second electrical charge being supplied to the first electrode.

5. The fan device of claim 1 , wherein the frame is made of insulating material.

6. The fan device of claim 5 , wherein the conductive blade further includes a first surface and a second surface being opposite to each other, and the frame clips the first surface and the second surface of the connection side, wherein the first electrode is in the position of facing the first or the second surface of the vibration side.

7. The fan device of claim 1 , wherein the resistance device includes glass-glaze high-voltage resistor.

8. The fan device of claim 1 , wherein a material of the conductive blade includes red copper, brass, beryllium copper or spring steel.

Assignees

• Univ National Chiao Tung

Inventors

• TSUI Yeng-Yung
• Wang Chi-Chuan
• Wei Ting-Kai
• Chin Hsueh-Han

Classifications

• F04D33/00 Primary

  Non-positive-displacement pumps with other than pure rotation, e.g. of oscillating type (F04D35/00 takes precedence; hand-held fans A45B) · CPC title

• B03C2201/14

  the gas being moved electro-kinetically · CPC title

• H01T23/00

  Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere · CPC title

• B03C3/38

  Particle charging or ionising stations, e.g. using electric discharge, radioactive radiation or flames · CPC title

• H01T19/00 Primary

  Devices providing for corona discharge (for charging electrographic elements G03G15/02) · CPC title