| abstract |
(57) [Summary] [PROBLEMS] To provide a switching room capable of switching between freezing and a temperature zone other than freezing in an insulated box body, and to integrate the door of the switching room with a door dedicated to freezing. SOLUTION: A cooler 20 is arranged behind a freezer compartment formed inside an insulated box 1, and a first partition plate is provided in front of the cooler 20. A second partition plate provided with a blower 22 for forcibly circulating cool air and the like in front of the cool air generation chamber 21 30 and a third partition plate 31, and the upper and lower cold air outlets 31. a, 30e and a cold air distribution chamber 23 equipped with damper devices 33, 32 A heat insulating partition 7 is provided in front of the lower portion of the cold air outlet 30e at a position higher than the cold air outlet 30e. A first return duct for cool air is provided between the cooling air generation chamber 21 and the second return duct for cool air is provided between the rear of the switching chamber 11 and the cold air generation chamber 21, and is switched to the dedicated refrigeration chamber 10. The door of the chamber 11 is, for example, an integrated drawer-type door 24. |