Enclosure for refrigerating chambers

A closure assembly for closing an access opening (3) to a refrigerating chamber, the closure assembly comprising:

• a sliding refrigerating door (1);
• and
• a quick-opening door (2);
• wherein both said doors (1, 2) are assembled on one same side of the access opening (3) to the refrigerating chamber, and;
• the quick-opening door (2) comprising:
• a frame provided with vertical posts (4);
• at least one flexible sheet (21, 22), exposed to the refrigerating chamber, the at least one flexible sheet (21, 22) movable along guides (41) of the vertical posts (4);
• and
• a motorised drum (5), provided with a protective cover (51), the motorised drum (5) rolling and unrolling said at least one flexible sheet (21, 22);
• wherein each of the vertical posts (4) of the frame of the quick-opening door (2) comprises:
• on an outer face thereof, at least one mouth (42) wherein a fan (6) is coupled at the at least one mouth (42) and introduces air into the vertical post (4);
• on an inside thereof, a deflector plate (61) which directs the air introduced by the fan (6) to a lower area of the vertical post (4), and electrical resistors (7) for heating the air are positioned underneath said deflector plate (61);
• and
• on an inner face thereof, an outlet (43) for supplying the heated air to an inner or outer surface of the at least one flexible sheet (21, 22), the inner or outer surface being exposed to the refrigerating chamber, and the heated air removing frost from said at least one flexible sheet (21, 22).