Ventilation – Having inlet airway – Including specific air distributor
Reexamination Certificate
2000-02-14
2001-04-03
Gravini, Stephen (Department: 3744)
Ventilation
Having inlet airway
Including specific air distributor
C454S318000, C454S321000
Reexamination Certificate
active
06210269
ABSTRACT:
TECHNICAL FIELD
The invention generally relates to air distribution units of the type commonly used in air conditioning, heating or ventilation systems and, more particularly, to a drive mechanism for an oscillating discharge louver assembly for such a unit.
BACKGROUND ART
In many commercial air conditioning, heating and ventilating systems, treated air is discharged into an area to be conditioned through an air distribution or conditioning unit. For example, one general type of air conditioning system, often referred to as a split system, includes separate indoor and outdoor units. The outdoor unit includes a compressor, a heat exchanger and a fan. The indoor unit includes a heat exchanger and a fan. In operation, the indoor fan draws air into the indoor unit, through an inlet thereof, and forces the air over the indoor heat exchanger and then out of the indoor unit, through an outlet opening therein.
The outdoor fan draws air into the outdoor unit, through an inlet, forces that air over the outdoor heat exchanger and then forces that air out of the outdoor unit through an outlet therein. At the same time, a compressor causes a refrigeration fluid to circulate through and between the indoor/outdoor heat exchangers. At the indoor heat exchanger, the refrigerant absorbs heat from the air passing over that heat exchanger, cooling that air. At the same time, at the outdoor heat exchanger, the air passing over the heat exchanger absorbs heat from the refrigerant passing therethrough. Typically, a louvered assembly is disposed in the outlet of the indoor unit to direct the air discharge from that unit at a preferred angle.
It is considered desirable for the louvered air discharge to be provided with an arrangement whereby the louvers are oscillated to vary the direction of air flow from the discharge assembly.
DISCLOSURE OF THE INVENTION
An oscillating drive mechanism for an air discharge nozzle, which is mounted for pivotal movement about an axis. The discharge nozzle includes end plates, each having a pivot pin extending along the pivot axis. One end plate has an elongated slot therein spaced from the pivot pin. The pivot pins are supported at opposite ends by support structure, which allows pivotal movement of the nozzle about the axis. The support structure adjacent one end includes an opening therethrough spaced from the axis and configured such that the elongated slot and one end plate will sweep across the opening as the air discharge nozzle pivots through a predetermined desired arcuate sweep. A drive motor having a drive axis is attached on the opposite side of the support structure, opposite the through opening. A drive mechanism is disposed in the opening. The drive mechanism is coupled to the drive motor on one side thereof and has a drive pin on the other side thereof, which is driven in an orbiting pattern around the motor drive axis. The drive pin is configured to engage the elongated slot in the end plate and to traverse the slot in alternating directions as the motor rotates the drive mechanism to thereby cause the air discharge nozzle to oscillate through the predetermined arcuate sweep.
REFERENCES:
patent: 4938122 (1990-07-01), Ziemba
patent: 4424904 (1995-01-01), None
patent: 05212193 (1993-08-01), None
patent: 811810 (1997-12-01), None
Correa Juan Carlos Carne
Tesche Carlos Alfonso
Carrier Corporation
Gravini Stephen
Lu Jiping
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