The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 1983
Filed:
Oct. 27, 1980
Robert W Graham, Fairview Park, OH (US);
S Stephen Papell, Berea, OH (US);
Abstract
The object of the invention is to provide more effective film cooling to protect a wall surface from a hot fluid which impinges on or flows along the surface. A film of cooling fluid having increased area is provided by changing the direction of a stream of cooling fluid through an angle of from 135.degree. to 165.degree. before injecting it through the wall into the hot flowing gas. As shown in FIG. 1, cooling fluid is injected from an orifice (16) through a wall (10) into a hot flowing gas (11) at an angle (20) to form a cooling fluid film (12). Cooling fluid is supplied to the orifice (16) from a cooling fluid source (13) via a turbulence control passageway (14) having a curved portion (18) between two straight portions (17 and 19). The angle (24) through which the direction of the cooling fluid is turned results in less mixing of the cooling fluid with the hot gas (11), thereby substantially increasing the length of the film (12) in a downstream direction. FIGS. 2, 3, 4 and 5 illustrate specific applications of the invention.