Refrigeration door system and door assembly with defrosting and related methods

A door assembly for a refrigeration door system with a defrosting feature, the door assembly comprising:

• a door frame;
• a sliding door coupled to the door frame, the sliding door switching between an open position providing access to a refrigerated cavity and a closed position where the refrigerated cavity is inaccessible;
• the door frame comprising
• a top member having a first end and a second end opposite the first end,
• a first side member coupled transversely to the first end of the top member and having a side conduit therein,
• a second side member coupled transversely to the second end of the top member, and
• a medial member coupled transversely to the top member between the first end and the second end of the top member, the medial member having a medial conduit therein;
• at least one heated pressure source coupled to the top member and configured to output heated air into the side conduit and the medial conduit;
• and
• a distal molding section carried by the first side member cooperating with the first side member to define the side conduit when the sliding door is in the closed position, the distal molding section comprising distal molding strip adjacent an outer surface of the sliding door.

A method for making a refrigeration door system with a defrosting feature, the method comprising:

• coupling a door assembly to be carried by a housing and providing access to a refrigerated cavity, the door assembly comprising
• a door frame and a sliding door coupled to the door frame, the sliding door switching between an open position providing the access to the refrigerated cavity and a closed position where the refrigerated cavity is inaccessible,
• the door frame comprising
• a top member having a first end and a second end opposite the first end,
• a first side member coupled transversely to the first end of the top member and having a side conduit therein,
• a second side member coupled transversely to the second end of the top member, and
• a medial member coupled transversely to the top member between the first end and the second end of the top member, the medial member having a medial conduit therein;
• positioning at least one heated pressure source coupled to the top member and configured to output heated air into the side conduit and the medial conduit;
• the door assembly comprising a distal molding section carried by the first side member cooperating with the first side member to define the side conduit when the sliding door is in the closed position, the distal molding section comprising distal molding strip adjacent an outer surface of the sliding door.