Air flow producer for reducing room temperature gradients

Details Air flow producer for reducing room temperature gradients Air flow producer for reducing room temperature gradients

2005-10-18

2005-10-18

Joyce, Harold (Department: 3749)

Ventilation

Having forced recirculation

Forced recirculation alone

C454S231000

Reexamination Certificate

active

06955596

ABSTRACT:
An air flow producer mounted at the ceiling of a room generates an air flow toward the floor, reducing temperature gradients and improving heating and cooling efficiency. A housing defines a circular cylindrical, vertical flow passage that receives the air flow. A discharge chamber discharges the air flow through a grill toward the floor. The discharge chamber has a cross-section that expands progressively from the outlet of the flow passage to the outlet of the discharge chamber. The air flow through the housing is produced by a fan with a rotary blade assembly, and the blade assembly extends partially into the discharge chamber. The position of the blade assembly and the expanding cross-section of the discharge chamber cooperate to increase air flows through the housing. Optionally, an air intake chamber of generally inverted frustoconical shape may be mounted at the upper inlet end of the cylindrical flow passage to smooth flows further.

REFERENCES:
patent: 2301045 (1942-11-01), Heath
patent: 2700331 (1955-01-01), Miller
patent: 3827342 (1974-08-01), Hughes
patent: 4628798 (1986-12-01), Tagnon
patent: 5350337 (1994-09-01), Kondo et al.
patent: 5624311 (1997-04-01), Peludat
patent: 8203932 (1984-05-01), None

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