| 摘要 |
A vertically elongated upright and closed bottom cabinet is provided including peripherally extending sides. A vertically extending passage structure is disposed within the cabinet inwardly of the peripheral sides thereof and the passage structure is constructed from material having good heat transfer properties and include upper and lower ends opening outwardly of the cabinet. Blower structure is operatively associated with the passage structure for pumping air through the passage structure and inlet structure is provided for admitting CO2 "snow" into the upper end portion of the cabinet about the passage structure for gravity falling of the "snow" within the cabinet toward the closed bottom thereof about the passage structure.
|
