Variable venturi, variable volume, air induction input for an ai

Details Variable venturi, variable volume, air induction input for an ai Variable venturi, variable volume, air induction input for an ai

1981-01-02

1984-05-15

Makay, Albert J.

98 40D, F24F 1306

Patent

active

044481110

ABSTRACT:
A unit for heating or cooling multiple rooms including a plenum diffuser mounted parallel within a ceiling runner and supported by hangars within the ceiling plenum. Each unit includes a round inlet collar, an elongated plenum to form a "Venturi," hinged volume dampers, secondary air openings, a bottom plenum chamber, and a pattern controller. The volume dampers housed within the Venturi work in unison. When the volume dampers are open, the unit functions similar to any conventional heating or cooling plenum diffuser. Primary air (heating air or cooling air) will enter the unit and leave through a discharge opening with no change in the air quantity or temperature. As space cooling or heating requirements are met, the volume dampers close at a preset distance, the primary air is reduced (variable volume), the velocity is increased and induces (induction) warm return air through the secondary air openings from the ceiling plenum, or ducted room return, into the primary air stream. This maintains effective room air motion and varies the air discharge temperature (variable discharge temperature) to bring the space to the desired temperature quicker. A pattern controller is located at the discharge opening of the unit, which when rotated, will adjust the air system to numerous air patterns.

REFERENCES:
patent: 3760708 (1973-09-01), Burup
patent: 3848799 (1974-11-01), Day
patent: 4178840 (1979-12-01), Caknis

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