Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Patent
1985-12-23
1987-06-02
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
415115, F01D 518
Patent
active
046699570
ABSTRACT:
The wall of a hollow turbine airfoil has a longitudinally extending coolant outlet slot in its external surface which intersects, along its length, a longitudinally extending cylindrical channel within the wall. Metering passages extend from the inside surface of the airfoil wall to the cylindrical channel and direct a metered amount of coolant into the channel in a manner which results in a swirling motion being imparted to the fluid as the fluid diffuses within the channel. The coolant is thereupon ejected from the channel through the slot in the external surface as a film on the external surface of the airfoil along the length of the slot. The swirling of the fluid within the cylindrical channel helps diffuse the fluid such that the outlet slot becomes completely filled with coolant, whereby a film of coolant is created on the airfoil surface downstream of the slot over the full length of the slot.
REFERENCES:
patent: 1857509 (1932-05-01), Holmstrom
patent: 2149510 (1939-03-01), Darrieus
patent: 2220420 (1940-11-01), Meyer
patent: 2236426 (1941-03-01), Faber
patent: 2477583 (1949-08-01), De Zubay et al.
patent: 2489683 (1949-11-01), Stalker
patent: 3098148 (1963-07-01), Diot et al.
patent: 3303645 (1967-02-01), Ishibashi
patent: 3447318 (1969-06-01), Caruel et al.
patent: 3515499 (1970-06-01), Beer et al.
patent: 3527543 (1970-09-01), Howald
patent: 3594536 (1971-07-01), Holroyd
patent: 3619076 (1971-11-01), Kydd
patent: 3635586 (1972-01-01), Keat et al.
patent: 3746827 (1973-07-01), Martin et al.
patent: 3778183 (1973-12-01), Luscher et al.
patent: 3799696 (1974-03-01), Redman
patent: 3801218 (1974-04-01), Moore
patent: 3830450 (1974-08-01), Williams et al.
patent: 3844677 (1974-10-01), Evans
patent: 3889903 (1975-06-01), Hilby
patent: 3915106 (1975-10-01), De Witt
patent: 3978662 (1976-09-01), Dubell et al.
patent: 3995422 (1976-12-01), Stamm
patent: 4142824 (1979-03-01), Andersen
patent: 4162136 (1979-07-01), Parkes
patent: 4168938 (1979-09-01), Dodd
patent: 4197443 (1980-04-01), Sidenstick
patent: 4214722 (1980-07-01), Tamura
patent: 4259842 (1981-04-01), Koshoffer et al.
patent: 4267698 (1981-05-01), Hartmann et al.
patent: 4303374 (1981-12-01), Braddy
patent: 4314442 (1982-02-01), Rice
patent: 4347037 (1982-08-01), Corrigan
patent: 4380906 (1983-04-01), Dierberger
patent: 4384823 (1983-05-01), Graham
patent: 4505639 (1985-03-01), Groess et al.
patent: 4529358 (1985-07-01), Papell
patent: 4565490 (1986-01-01), Rice
Flight and Aircraft Engineer, No. 2460, vol. 69, 3-16-56, pp. 292-295.
Advances in Heat Transfer, by Richard J. Goldstein, vol. 7, Academic Press, (N.Y., 1971), The Monograph Film Cooling, pp. 321-379.
NASA Technical Paper 1546 Influence of Coolant Tube Curvature on Film Cooling Effectiveness as Detected by Infrared Imagery, by S. Stephen Papell et al, 1979.
Field Robert E.
Phillips James S.
Powell Jr. Everette A.
Revis Stephen E.
United Technologies Corporation
LandOfFree
Film coolant passage with swirl diffuser does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Film coolant passage with swirl diffuser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Film coolant passage with swirl diffuser will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-610262