Title:
VENTILATION FAN
Document Type and Number:
WIPO Patent Application WO/2021/049536
Kind Code:
A1
Abstract:
This ventilation fan enables an increase in airflow rate without an increase in the size of a casing. The ventilation fan includes: a composite fan 10 comprising first and second ventilation fans 10A, 10B which are connected onto the same rotating shaft 14; a box-shaped casing 20 accommodating the composite fan; a bell mouth 22 for sucking in air, formed through one surface of the casing; and a discharge port 24 provided in one side surface of the casing. The configuration is such that air that has been sucked into the casing, including an airflow that has stagnated inside the casing on the opposite side to the discharge port, is discharged from the discharge port by means of the rotation of the first and second ventilation fans.
Inventors:
HAYASHI HIDECHITO (JP)
WAR WAR MIN SWE (JP)
WAR WAR MIN SWE (JP)
Application Number:
PCT/JP2020/034142
Publication Date:
March 18, 2021
Filing Date:
September 09, 2020
Export Citation:
Assignee:
UNIV NAGASAKI (JP)
International Classes:
F04D25/16; F04D17/04; F04D29/28
Domestic Patent References:
| WO2017085837A1 | 2017-05-26 |
Foreign References:
| CN103321929A | 2013-09-25 | |||
| JP2008010256A | 2008-01-17 | |||
| JP2012132428A | 2012-07-12 | |||
| JPS4111946B1 | 1966-06-30 |
Attorney, Agent or Firm:
YAMAGUCHI INTERNATIONAL PATENT FIRM (JP)
Download PDF: