| 摘要 |
FIELD: personal use articles. ^ SUBSTANCE: door comprises a leaf of box type with a heat-insulating filler installed on roller-support suspensions with the possibility of reciprocal motion along a guide fixed above the chamber opening. Sealants are fixed on the inner side of the leaf along the perimetre and at its lower end. The air compressor for forced blowing of the sealant in the closed position of the door leaf is located in the upper part of the door leaf. Along the perimetre of the chamber opening there is a door leaf arranged as double-chamber in cross section. A ""-shaped chamber of smaller perimetre, with which sealants contact, is arranged with a heat-insulating filler. A ""-shaped chamber of larger diameter adjacent to it is hollow with perforation on outer surface. The door leaf is equipped with a lifting/lowering mechanism installed on its side end and joined to the opening/closing handle. In the lowered position the door leaf rests against a floor support. ^ EFFECT: provision of more efficient blowing of sealants, elimination of condensate formation and reduction of sealants wear, which increases door service life. ^ 2 cl, 6 dwg |
