US 12,215,877 B2
Air circulation device
Masafumi Uda, Osaka (JP); Yousuke Imai, Osaka (JP); Keita Kawahara, Osaka (JP); and Kiichirou Satou, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Mar. 16, 2022, as Appl. No. 17/696,719.
Application 17/696,719 is a continuation of application No. PCT/JP2020/036660, filed on Sep. 28, 2020.
Prior Publication US 2022/0205658 A1, Jun. 30, 2022
Int. Cl. F24F 11/00 (2018.01); F24F 7/007 (2006.01); F24F 120/12 (2018.01)
CPC F24F 11/0001 (2013.01) [F24F 7/007 (2013.01); F24F 2120/12 (2018.01)] 8 Claims
OG exemplary drawing
 
1. An air circulation device comprising:
a suction section configured to suck indoor air; and
a blower section configured to blow the air sucked by the suction section into a room, the air being in a form of a vortex ring,
the air circulation device being operable in at least a first mode in which the vortex ring blown from the air circulation device reaches a wall surface of the room and air of the vortex ring, having reached the wall surface and collapsed, being pushed back toward the suction section, wherein
the vortex ring is blown through an outlet into the room,
the air circulation device further includes a damper configured to close a portion of an air passage connecting the blower section to the outlet, and
the damper is further configured to move to a position in which the damper blocks air traveling from the suction section toward the blower section.