CAPILLARY TUBE FOR A PACKAGED TERMINAL AIR CONDITIONER UNIT

摘要

A capillary tube for a heat pump system, such as a packaged terminal air conditioner unit, includes features for adjusting a restriction on a flow of refrigerant through the capillary tube depending upon a direction of the flow of refrigerant through the capillary tube. A related packaged terminal air conditioner unit is also provided.

主权项

1. A packaged terminal air conditioner unit, comprising:
a casing extending between an exterior side portion and an interior side portion; a compressor positioned within the casing, the compressor operable to compress a refrigerant; an interior coil positioned within the casing at the interior side portion of the casing; an exterior coil positioned within the casing at the exterior side portion of the casing; a reversing valve in fluid communication with the compressor in order to receive compressed refrigerant from the compressor, the reversing valve configured for selectively directing the compressed refrigerant from the compressor to either the interior coil or the exterior coil; a capillary tube extending between the interior coil and the exterior coil in order to direct refrigerant between the interior coil and the exterior coil, the capillary tube comprising means for adjusting a restriction on a flow of refrigerant through the capillary tube depending upon a direction of the flow of refrigerant through the capillary tube.