Refrigeration door system and door assembly with defrosting and related methods

摘要

A door assembly for a refrigeration door system with a defrosting feature. The door assembly also includes a door frame. The door frame may include a top member having a first end and a second end opposite the first end, and the top member may have a top conduit therein. The door frame may also include a first side member coupled transversely to the first end of the top member and having a first conduit therein, the first conduit being fluidly coupled to the top conduit, and a second side member coupled transversely to the second end of the top member and having a second conduit. The second conduit may be fluidly coupled to the top conduit. The door frame may further have orifices positioned along the top member, the first side member, and the second side member. The door assembly also includes a positive pressure source.