| 摘要 |
A dry ice feeding apparatus comprises a hopper ( 10 ) adapted to store a supply of dry ice pieces. The hopper ( 10 ) has a substantially cylindrical upper portion ( 12 ), a frusto-conical lower portion ( 14 ) depending downwardly from the upper portion, and a head portion ( 18 ) disposed atop the upper portion. The hopper also has an upper opening ( 20 ) in the head portion to provide access for loading dry ice pellets into the hopper and a lower opening ( 17 ) at the bottom of lower portion. A lid ( 26 ) adapted to cover the upper opening of the hopper includes an 0-ring ( 30 ) providing a fluid seal between the lid and the hopper's upper opening. A mixing chamber ( 64 ) is disposed beneath the lower opening of the hopper.
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