| 摘要 |
PROBLEM TO BE SOLVED: To form a deep freezing chamber and a switching chamber capable of being switched to a temperature zone except the freezing without using a heat insulation partition in the freezing chamber. SOLUTION: A cooler 18 is disposed at the rear side of a deep freezing chamber, and a partition plate 28 having a blower 20 is stood at its front side to a chilled air generating chamber 19. Then, a chilled air distributing chamber 21 made of partition plates 28, 29 at front sides of the chamber 19, having chilled air outlets 29a, 28e above and below and having a damper 30 in the lower outlet 28e is provided. An upper container 23 made of inner and outer cases 23A, 23B to communicate the air between both is provided at the front side of a higher position than the lower outlet 28e. A gasket 27 for shutting off the air flow is provided between upper and lower parts at the lower end of the outer periphery of the container 23 to form an upper freezing chamber 9A and a lower switching chamber 9B. Then, chilled air return ducts 29b, 31 are respectively provided between the container 23 and the chamber 19 and between the rear side of the chamber 9B and the chamber 19. |
