Temperature compensated ventilating roll

Details Temperature compensated ventilating roll Temperature compensated ventilating roll

1989-12-20

1990-08-21

Bennet, Henry A.

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

34117, 34122, F26B 1316

Patent

active

049494759

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.

REFERENCES:
patent: 3304626 (1967-02-01), Leckner
patent: 3345757 (1967-10-01), Daane
patent: 3702503 (1972-11-01), Nichols
patent: 4252184 (1981-02-01), Appel
patent: 4485567 (1984-12-01), Ely
patent: 4492044 (1985-01-01), Knutsen
patent: 4882854 (1989-11-01), Wedel et al.

Affiliated with

Also associated with

Rating

Temperature compensated ventilating roll does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Temperature compensated ventilating roll, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature compensated ventilating roll will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1668269