Refrigeration – Cryogenic treatment of gas or gas mixture – Solidification
Patent
1995-04-21
1997-09-16
Capossela, Ronald C.
Refrigeration
Cryogenic treatment of gas or gas mixture
Solidification
62 69, 62 70, F25J 100
Patent
active
056668210
ABSTRACT:
A cryoblasting process having a centrifugal accelerator for accelerating frozen pellets of argon or carbon dioxide toward a target area utilizes an accelerator throw wheel designed to induce, during operation, the creation of a low-friction gas bearing within internal passages of the wheel which would otherwise retard acceleration of the pellets as they move through the passages. An associated system and method for removing paint from a surface with cryoblasting techniques involves the treating, such as a preheating, of the painted surface to soften the paint prior to the impacting of frozen pellets thereagainst to increase the rate of paint removal. A system and method for producing large quantities of frozen pellets from a liquid material, such as liquid argon or carbon dioxide, for use in a cryoblasting process utilizes a chamber into which the liquid material is introduced in the form of a jet which disintegrates into droplets. A non-condensible gas, such as inert helium or air, is injected into the chamber at a controlled rate so that the droplets freeze into bodies of relatively high density.
REFERENCES:
patent: 2217678 (1940-10-01), Goosmann
patent: 2570074 (1951-10-01), Rupp
patent: 2608838 (1952-09-01), Rupp
patent: 3124442 (1964-03-01), Rich
patent: 3670516 (1972-06-01), Duron et al.
patent: 3676963 (1972-07-01), Rice et al.
patent: 3702519 (1972-11-01), Rice et al.
patent: 3817045 (1974-06-01), Muska
patent: 3901044 (1975-08-01), Vahl
patent: 4617064 (1986-10-01), Moore
patent: 4744181 (1988-05-01), Moore
patent: 4806171 (1989-02-01), Whitlock
patent: 5207068 (1993-05-01), Bridden
patent: 5249426 (1993-10-01), Spivak et al.
Product Bulletin (undated) related to Blastrac .TM. Portable Shot Blast Cleaning Systems from Wheelabrator Corporation.
Product Bulletin (undated)related to Cyroflash Model CD-1000 shot deflashing machine from Cyroquip Corporation.
"Source of Uniform-Sized Liquid Droplets" by J.M. Sneider and C.D. Hendricks, The Review of Scientific Instruments, vol. 35, No. 10, 10.
"Apparatus for Producing Uniform Solid Spheres of Hydrogen", C.A. Foster, et al. Rev. Sci. Instrum. vol. 48, No. 6, Jun. 1977.
Fisher Paul W.
Foster Christopher A.
Capossela Ronald C.
Lockheed Martin Energy Systems, Inc.
McKee Michael E.
Spicer James M.
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