Packaged air conditioner

In a package terminal air conditioning unit that is formed of an interior unit disposed within a building, a separate exterior unit disposed outside the building, and connecting duct means connecting the interior unit to the exterior unit, in which the interior unit comprises a cabinet, an indoor heat exchanger coil, and a cylindrical fan which includes a cylindrical fan rotor, means mounting the rotor in the cabinet, and a volute shaped member;

• said exterior unit comprises an outside heat exchanger coil and an outside cabinet separated from said indoor cabinet and housing said outdoor heat exchanger;
• and said connecting duct means comprises a pair of refrigerant lines passing between the two cabinets for connecting the two heat exchanger coils, a compressor, and an expansion valve to complete an air conditioning circuit;
• the improvement wherein said compressor is contained in the indoor cabinet of the interior unit so that the exterior unit is kept as small and light as possible, and has a relatively small power requirement as compared with the interior unit;
• said indoor cabinet is molded of a synthetic resin and is formed of a base section, a back section, and a removable front cover section that interlock to form an equipment compartment that houses said compressor and an adjacent air duct that connects an inlet vent and an outlet vent with the indoor heat exchanger coil situated therebetween;
• both of which compartments are opened by removal of only the front cover section;
• said back section having an integral molded volute-shaped casing that forms a part of the air duct for housing the cylindrical fan rotor and integral support means for mounting the indoor heat exchanger coil in said air duct;
• said base section including means for mounting the compressor in said equipment compartment and;
• said front cover section including a guide vane removably mounted therein that is positioned in said air duct adjacent the fan for directing the air therethrough.