Refrigeration – Structural installation – Window connected or mounted
Reexamination Certificate
2000-05-09
2001-08-21
Doerrler, William (Department: 3744)
Refrigeration
Structural installation
Window connected or mounted
C062S298000, C062S427000
Reexamination Certificate
active
06276157
ABSTRACT:
TECHNICAL FIELD
This invention relates to air conditioning units which are adapted to exhaust unwanted air as well as to provide conditioned air to a room being served by the unit. More specifically, the present invention relates to apparatus for moving a door covering an exhaust port in a self contained air conditioner having the foregoing capability.
BACKGROUND ART
Air conditioning units which are commonly used for residential and similar application generally are contained within a single casing. This casing is usually divided by a partition into an evaporator section and a condenser section, each section having its own fan to circulate air therein. The air conditioning unit is normally mounted with the evaporator section communicating with the room air to be conditioned and the condenser section communicating with external air such as outside air. Refrigerant flows through the self contained refrigerant circuit removing heat from the room air and discharging heat to the outside air.
In addition to the capability of the air conditioning unit to provide temperature controlled air to the room, it is desirable for the unit to have means for exhausting unwanted room air from the room to the outside. This is accomplished by the location of a port in the partition separating the condenser section from the evaporator section. A part of the room air enters the evaporator section of the unit and is forced by the evaporator and condenser fans through the port into the condenser section communicating with outside air.
Since the port must be selectively open when the unit is in the exhaust mode of operation, that mode in which part of the unwanted room air is being exhausted, and closed when the unit is in the separate mode of operation to condition the room air, a door is provided to cover the port and a control mechanism is necessary to maintain the door in the appropriate position.
Previous door control mechanisms, while effective, have been relatively complex, requiring numerous parts and considerable skill and effort to assemble the parts. Moreover, prior mechanisms have been awkward to operate and have required the exertion of considerable force to change door positions. Furthermore, mechanisms of the preceding type have tended to make access to the interior of the unit for service more difficult.
DISCLOSURE OF THE INVENTION
A room air conditioner of the type having a partition, which divides the indoor and outdoor sections of the air conditioning unit. The partition has an exhaust opening for exhausting room air into the outdoor section. An improved exhaust and control arrangement includes a scroll structure mounted in the indoor section for directing conditioned air into the space to be cooled. The scroll structure has a rear wall in confronting relation with the partition and has an exhaust opening therein in fluid communication with the indoor section side of the exhaust opening in the partition. Support structure is provided in the indoor section located laterally of and forwardly of the exhaust opening in the partition. The partition is provided with a second opening therethrough adjacent the support structure. A one-piece exhaust actuation device includes an elongated actuating arm. The arm has a first end extending forwardly of the support structure, an intermediate section extending in close proximity to the support structure and through the second opening into the outdoor section. A second end of the actuation device has a curved section configured to extend into the outdoor section in a first direction and to substantially reverse direction with the end of the curved section being adjacent to the outdoor section side of the exhaust opening in the partition. The end of the curved section carries a door thereupon which is configured to block air flow through the exhaust opening in the partition when it is in confronting relation therewith. Means are provided on the support structure for pivotally supporting the intermediate section of the actuating arm at a position such that lateral movement of the first end of the arm will result in movement of the door selectively between a position in confronting relation with the exhaust opening and a position allowing free exhaust flow through the exhaust opening.
REFERENCES:
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patent: 5415011 (1995-05-01), Gilmore et al.
patent: 5927096 (1999-07-01), Piccione
patent: 4039164 (1991-06-01), None
patent: 2170589 (1986-08-01), None
Carrier Corporation
Doerrler William
Shulman Mark S.
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