PACKAGED TERMINAL AIR CONDITIONER UNIT
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United States of America Patent
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Issued Date -
Jun 20, 2019
app pub date -
Dec 14, 2017
filing date -
Dec 14, 2017
priority date (Note) -
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Abstract
A packaged terminal air conditioner unit includes a main expansion device connected to an interior coil such that the main expansion device is operable to throttle a flow of refrigerant to both a first coil section and a second coil section of the interior coil. A secondary expansion device is connected in series between the main expansion device and the second coil section of the interior coil such that the secondary expansion device is operable to throttle a flow of refrigerant to the second coil section of the interior coil. A controller is in operative communication with the secondary expansion device such that the controller adjusts the secondary expansion device to a configuration between a fully open configuration and a fully closed configuration during operation of the compressor.
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