Voltage application device, rotation apparatus and voltage application method

Patent metadata

Field	Value
Publication number	US-9644632-B2
Application number	US-201414503462-A
Country	US
Kind code	B2
Filing date	Oct 1, 2014
Priority date	May 13, 2011
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A voltage application device of an embodiment applies a voltage between a first and second electrode disposed separately from each other in an airflow generation device, which is disposed on a rotation blade of a rotation apparatus, in which a rotation shaft of the rotation blade is held rotatably by a holding part. In the voltage application device of the embodiment, a voltage output unit outputs a voltage. Then, a sliding type transmission unit having electrodes disposed respectively on the rotation blade side and the holding part side of the rotation shaft transmits a voltage outputted from the voltage output unit from the holding part side to the rotation blade side. Then, a transformation unit disposed on the rotation blade side increases the voltage transmitted by the sliding type transmission unit and outputs the voltage to the airflow generation device.

First claim

What is claimed is:

1. A voltage application device for applying a voltage between a first electrode and a second electrode disposed separately from each other in an airflow generation device,
the airflow generation device disposed on rotation blades of a rotation apparatus, the rotation apparatus having a holding part and a rotation shaft held by the holding part, the rotation blades attached to the rotation shaft, the voltage application device comprising:
an AC/DC converter for converting a voltage of a commercial frequency into a direct-current voltage;
a high frequency generator for generating an alternating voltage based on the direct-current voltage converted by the AC/DC converter;
slip rings disposed on a rotation blade side and a holding part side of the rotation shaft for transmitting the alternating voltage or direct current voltage from the holding part side to the rotation blade side; and
transformers for increasing the alternating voltage generated by the high frequency generator and outputting the increased voltage between the first electrode and the second electrode, the transformers being disposed in the rotation blades so that a combined center of gravity thereof substantially matches a center axis of the rotation shaft.

2. A rotation apparatus comprising the voltage application device according to claim 1 .

3. The voltage application device according to claim 1 , wherein the slip rings transmit the commercial frequency to the AC/DC converter.

4. A rotation apparatus comprising the voltage application device according to claim 3 .

5. The voltage application device according to claim 1 , wherein the slip rings transmit the direct current voltage from the AC/DC converter.

6. A rotation apparatus comprising the voltage application device according to claim 5 .

7. The voltage application device according to claim 1 , wherein the slip rings transmit the high frequency voltage from the high frequency generator.

8. A rotation apparatus comprising the voltage application device according to claim 7 .

9. The voltage application device according to claim 1 , wherein the slip ring has a ring and a brush in electrical contact with the ring.

10. A rotation apparatus comprising the voltage application device according to claim 9 .

11. The voltage application device according to claim 3 , wherein the slip ring has a ring and a brush in electrical contact with the ring.

12. A rotation apparatus comprising the voltage application device according to claim 11 .

13. The voltage application device according to claim 5 , wherein the slip ring has a ring and a brush in electrical contact with the ring.

14. A rotation apparatus comprising the voltage application device according to claim 13 .

15. The voltage application device according to claim 7 , wherein the slip ring has a ring and a brush in electrical contact with the ring.

16. A rotation apparatus comprising the voltage application device according to claim 15 .

Assignees

• Toshiba Kk

Inventors

• Tanaka Motofumi
• Matsuda Hisashi
• Goshima Shohei
• Yasui Hiroyuki
• Majima Amane
• Osako Toshiki

Classifications

• F04D29/388

  characterised by construction · CPC title

• F04D29/687

  Plasma actuators therefore · CPC title

• F03D80/85

  Cabling · CPC title

• F04D29/324

  Blades · CPC title

• F04D19/002

  Axial flow fans · CPC title