Refrigeration – Compartment access or use and air blocking – Including article conveyer or transporter
Patent
1991-05-21
1992-09-22
Capossela, Ronald C.
Refrigeration
Compartment access or use and air blocking
Including article conveyer or transporter
F25D 2302
Patent
active
051486873
ABSTRACT:
The invention relates to a cooling apparatus for hot bulk material, such as sintered ore. Gaps are defined between respective lower ends of side wall portions of a moveable annular air duct and respective upper ends of side wall portions of a stationary annular air duct, which gaps communicate the air passage in the stationary annular air duct with annular water seal chambers. First seal plates are disposed at respective upper ends of the side wall portions of the stationary annular air duct in relation to respective lower ends of the side wall portions of the moveable annular air duct. Second seal plates are disposed at respective lower ends of the side wall portions of the movable annular air duct. Labyrinth seals are formed by the first seal plates, the side wall portions of the moveable annular air duct, and the second seal plates in combination. This seal arrangement is entirely different from the conventional seal structure which involves sliding contact of seal members with other surfaces. Therefore, the seals are not subject to abrasion and this provides greater ease of maintenance and checking.
REFERENCES:
patent: 3955484 (1976-05-01), Hirahama et al.
patent: 4026200 (1977-05-01), Lindqvist
patent: 4426088 (1984-01-01), Ernst
Nakahara Takashi
Nishimoto Masaru
Oshio Katsuhiro
Sumoto Tadaaki
Tamei Akira
Capossela Ronald C.
Farley Joseph W.
Hitachi Zosen Corporation
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