Increasing jet entrainment, mixing and spreading

Details Increasing jet entrainment, mixing and spreading Increasing jet entrainment, mixing and spreading

1992-12-22

1994-08-16

Joyce, Harold

Ventilation

Having inlet airway

Including specific air distributor

454256, 454290, 454305, F24F 7007

Patent

active

053382544

ABSTRACT:
A free jet of air is disturbed at a frequency that substantially matches natural turbulences in the free jet to increase the entrainment, mixing, and spreading of air by the free jet, for example in a room or other enclosure. The disturbances are created by pulsing the flow of air that creates the free jet at the desired frequency. Such pulsing of the flow of air can be accomplished by sequentially occluding and opening a duct that confines and directs the flow of air, such as by rotating a disk on an axis transverse to the flow of air in the duct.

REFERENCES:
patent: 681215 (1901-08-01), Goll
patent: 2212468 (1940-08-01), Ferris
patent: 2972358 (1961-02-01), Hinden
patent: 3242846 (1966-03-01), Bunn
patent: 3777651 (1973-12-01), Hansen
patent: 3815485 (1974-06-01), Beusink et al.
patent: 3927827 (1975-12-01), Strindehag
patent: 4413550 (1983-11-01), Piano
patent: 4823681 (1989-04-01), Gore
patent: 4875624 (1989-10-01), Hara et al.

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