Title:
【発明の名称】温度補償型換気ロール
Document Type and Number:
Japanese Patent JPH05504380
Kind Code:
A
Abstract:
A ventilating roll for introducing a supply of relatively dry air into the pocket spaces between dryer rolls and the co-running fabrics and paper web in a papermaking machine, and removing the relatively moist air which is liberated from the traveling paper web as it comes into contact with the heated dryer rolls. The ventilating roll has a plurality of separate compartments, some of which conduct super-atmospheric pressure air into the pocket spaces, and some of which conduct sub-atmospheric air out of the pocket spaces. The compartments conducting air into the roll alternate with the compartments for conducting air out of the roll. The temperature of the internal structure of the roll is thereby balanced circumferentially about the center shaft of the roll and thermal bowing of the roll is kept to a minimum.
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Inventors:
Rayrick, Arnold Jay
Wedel, Gregory El
Brown, Dale A
Wedel, Gregory El
Brown, Dale A
Application Number:
JP50588590A
Publication Date:
July 08, 1993
Filing Date:
April 09, 1990
Export Citation:
Assignee:
Beloit Technologies, Inc.
International Classes:
D21F5/04; F26B13/16; (IPC1-7): F26B13/16; D21F5/04
Attorney, Agent or Firm:
Akasaka Saka (2 people outside)