PROBLEM TO BE SOLVED: To efficiently perform cooling and warming for a long period by elongating the service life of a packing.SOLUTION: A duct 85 provided with ventilation flues 86 respectively connecting heat exchanging chamber-side openings 72 and 73 with storage chamber-side openings 24 and 25 which are positioned opposite each other is vertically movably disposed on a lower face side of a ceiling wall of a station 50. Packings 87 which come into close contact with to edges of the opposite storage chamber-side openings 24 and 25 are disposed at lower end portions of the respective ventilation flues 86. An elevating mechanism portion 90 is disposed for moving the duct 80 between a descent position at which the packings 87 are in close contact with the edges of the storage chamber-side openings 24 and 25, and an ascent position at which the packings 87 are separated to a position above the edges of the storage chamber-side openings 24 and 25. The duct 80 is retracted to the ascent position when a cart 10 is taken in and out to/from the station 50, and the duct 80 is lowered to the descent position when the cart 10 is accommodated in the station 50.COPYRIGHT: (C)2014,JPO&INPIT【課題】パッキンの耐用寿命を延ばして長期に亘って効率良く冷温蔵が行えるようにする。【解決手段】ステーション50の天井壁の下面側には、対向する熱交換室側通口72,73と貯蔵室側通口24,25同士を接続する通風路86が設けられたダクト85が昇降可能に配設され、各通風路86の下端部には、対向した貯蔵室側通口24,25の口縁に密着するパッキン87が設けられているとともに、ダクト80を、パッキン87が貯蔵室側通口24,25の口縁に密着する下降位置と、パッキン87が貯蔵室側通口24,25の口縁の上方に離間した上昇位置との間で昇降させる昇降機構部90が設けられる。カート10がステーション50内に出し入れされる際にはダクト80が上昇位置に逃がされ、カート10がステーション50内に収納されたときに、ダクト80が下降位置に下降する。【選択図】図12
