Title:
SUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/140304
Kind Code:
A1
Abstract:
[Problem] To provide a suction device that is easy to manufacture, has excellent design properties, and can stably form an air curtain surrounding a wide area, as well as efficiently suction said surrounded area with a tornado-like flow. [Solution] A suction device for localized ventilation, said suction device comprising: a suction flow passage 10 that has a suction opening at the end portion toward a suction target 90 and has a suction flow flowing therethrough; a suction fan 20 that generates the suction flow in the suction flow passage 10; an outflow generation chamber 30 that widens in a disc shape and to which an outflow is guided from an inlet opening on the side opposite from the suction target 90; a plurality of blower fans 40 that blow said outflow outward from the outflow generation chamber 30 and as circling around the axis of the suction flow passage 10; and an outflow deflection guide 50 that deflects, toward the suction target 90, said outflow blown out by the plurality of blower fans 40.
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Inventors:
HATAYAMA AKIHIRO (JP)
Application Number:
PCT/JP2023/001419
Publication Date:
July 27, 2023
Filing Date:
January 19, 2023
Export Citation:
Assignee:
HATAYAMA AKIHIRO (JP)
International Classes:
F24F9/00; F04D25/16; F04D29/54; F24F7/06; F24F13/06; F24F13/08; F24F13/10
Foreign References:
| JP6973796B2 | 2021-12-01 | |||
| JPH02195140A | 1990-08-01 | |||
| JP2005317205A | 2005-11-10 | |||
| KR20150027624A | 2015-03-12 | |||
| KR101761516B1 | 2017-07-26 | |||
| JPH04140A | 1992-01-06 | |||
| JPH09101049A | 1997-04-15 | |||
| CN105180238A | 2015-12-23 | |||
| CN103175238A | 2013-06-26 |
Attorney, Agent or Firm:
ARAI Ryokichi (JP)
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