Sealed system for a packaged terminal air conditioner unit

A line filter assembly for a sealed heat exchange system, the line filter assembly comprising:

• a housing defining an indoor port having a first cross sectional area, a bypass port having a second cross sectional area smaller than the first cross sectional area, and an outdoor port;
• a check valve positioned within the housing, the check valve being configured for preventing a flow of refrigerant from passing from the indoor port to the outdoor port;
• a line filter fluidly coupled to the outdoor port of the housing and comprising a filter media for filtering the flow of refrigerant, the line filter defining a bypass discharge;
• a bypass conduit providing fluid communication between the bypass port and the bypass discharge, the filter media being positioned between the bypass discharge and the housing;
• and
• wherein the outdoor port is defined at a first end of the housing and the indoor port and bypass port are defined at a second end of the housing.

A packaged terminal air conditioner unit, comprising:

• a bulkhead positioned within a casing and defining an interior side portion and an exterior side portion;
• an outdoor heat exchanger disposed in the exterior side portion;
• an indoor heat exchanger disposed in the interior side portion;
• a compressor operable to urge a flow of refrigerant through the indoor heat exchanger and the outdoor heat exchanger;
• and
• a line filter assembly fluidly coupling the indoor heat exchanger to the outdoor heat exchanger, the line filter assembly comprising:
• a housing defining an indoor port having a first cross sectional area, a bypass port having a second cross sectional area smaller than the first cross sectional area, and an outdoor port defined at a first end of the housing, wherein the indoor port and bypass port are defined at a second end of the housing;
• an indoor conduit providing fluid communication between the indoor port and the indoor heat exchanger;
• an outdoor conduit providing fluid communication between the outdoor port and the outdoor heat exchanger;
• a line filter operably coupled to the outdoor conduit for filtering the flow of refrigerant;
• a check valve positioned within the housing, the check valve being configured for preventing the flow of refrigerant from passing from the indoor port to the outdoor port;
• and
• a bypass conduit providing fluid communication between the bypass port and the outdoor conduit.