2,411,?98 ; " Patented Nov. 26, 1946 UNITED STATE s [PATENT ' OFFICE-c 2,411,798 GAS TURBINE. . Arthur H. Matthews, Lake Be'auport, ‘Quebec, Canad Application July 5, 1944, Serial No, 542,574 v2 Claims; ' (01.60-41) l ‘ - i . )obiect is to provide a simple and emcient gas turbine which may be constructed of ordinary in ' respectively indicated at 5 and 8. ’ for adequate cooling with minimum loss of pow ‘ 2 , In this drawing the rotor and the stator-cas ing elements of my improved gas-turbine are ' expensive metals and in which provision is made er and e?iciency. , Fig. 2 is a sectional view taken substantially along the line 2-2 of Fig. 1. This invention relates to gas-turbines and the ‘ ' -' The rotor 5 is shown as a simple disk ?xed to a shaft 1 which rotates in bearings 8 carried a The commercial develope'mentnoi cheap and \ by opposite side walls of the stator-casing't. The e?lcient gas-turbines, especially in the smaller sizes required for general use, has been retarded periphery of the rotor is recessed to provide an by reason of the fact that the best gas-turbines i0 annular channel 8. into which jets of fluid are directed from nozzles or jet passages it, ‘ii and - heretofore proposed must be constructed of rel I2 formed in a removable section ta ofxthe stator casing 6. ‘At least one side wall of the channel tively rare and expensive heat resistant metals or alloys in order to withstand, for any consider able period, the destructive action of the high 9 is provided with discharge, ports M through operating temperatures characteristic of ' such 15 which jets of the motive fluid suppliedto said ‘ turbines. Gas-turbines constructed of ordinary metals and equipped with heat-dissipating water _ jackets in accordance with previous'proposals do not have the operating speed, e?iciency, low-cost characteristics and other essential requisites nec 24) essary to justify wide~scale commercial produc tion thereof, especially in the smaller sizes suit able for general use in various?elds in which other types of relatively small power plants are channel are discharged against suitable station ary vanes or buckets i5 arrangedwaround the upper‘ half of stator-casing t to thereby effect ' jet-reaction operation of the rotor. The motive ?uid is discharged from stator-casing 6 through the exhaust outlet i1, - ‘ Part of the motive ?uidexsupplied to the chan nel d of rotor 5 comprises hot products .of com bustion resulting from ignition of a combustible fuel mixture with a combustion chamber it pro . 'l vided in the removable cylinder section ta. The An important feature of the gas-turbine ‘pron ‘fuel mixture is supplied to chamber 89 through vided in accordance with my invention is '"that 9. “Tesla" valve 2!) and is ignited by a spark plug the rotor is of simple design and is free of vanes, 2! or other suitable igniter. - The resulting prod buckets, or other resistance-increasing projec-v tions which, as employedin prior types of gas. 30 ucts of combustion escape from chamber i9 through vjet passage it and are directedinto the turbines, tend to decrease both the operating now being used. speed and the power output. rotor channel 9. \ Another feature of the invention consistsin the provision of a generally improved gas-turbine in which the use of ordinary metals is ‘made feasible by’ the use ‘of water jets which serve both as a cooling medium and as a motive ?uid. ' A still further feature of the invention consists ' Another part of the motive ?uid supplied to the rotor consists of steam formed by vaporization ~ of Jets of water which are directed-into the rotor channel 9 by the Jet passages ii and it. The , cooling action of these jets of water is suf?cient to prevent_heat-destruction of ordinary-metal used in the construction of the turbine.- The water is . in_ the provision of a jet-propelled or reaction preferably supplied to the jet passages ii and 02 40 ' type gas-turbine in which the rotor comprises a simple disk-shaped element provided with a pe ripheral channel into which jets of motive ?uid - are directed from nozzles or jets carried by a through “Tesla" type valves indicated at 22 and 23. ' ‘The peripheral wall of the stator casing t is provided with a series of expansion chambers 25 stator casing in which the rotor operates. at least one side wall of said channel being provided with 45 into which the steam resulting from vaporization of the water jets directed against the rotor is discharge openings through which the motive I expanded to'increase the momentum imparted to ?uid-is supplied to said channel in the form of jets which impinge against stationary buckets the rotor. I The hot products of combustion directed into the rotor channel 9 by nozzle it constitute the 50 Other characteristic features and advantages main motive fluid which drives and heats the of my invention will be- made apparent by the or vanes carried by the stator casing. following detailed description of the accompany- _ ing drawing, in which Fig. 1 is a vertical sectional view taken substan tially along the line i-—| of Fig. 2: and , rotor. The water injected through the jet pas sages I l and I2 serves primarily as a cooling me dium but, when converted into steam as described herein‘, also serves as a motive ?uid and enables ' , 2,411,798 3 , the turbine to be operated ef?ciently with ‘a smaller amount of combustible fuel than would otherwise be required. The combustion chamber I9 is provided with a removable cover or head 26 formed with a water' jacket 21 which is connected, by pipe 28, to water jet valve 22. Cooling water is supplied to jacket 21 by a suitable supply pipe (not, shown) and I claim: Y 4 - ' 1. A gas-turbine comprising a rotor provided with a peripheral channel having discharge ports in one side wall thereof, a stationary casing en closing said rotor and provided with jet-passages through which expansible motive ?uid is directed into said channel and stationary vanes or buckets in said casing located opposite the ported side of said channel and positioned to receive the im passes from thence through pipe 28 and valve 22 to water-Jet passage II. The valve 23 of 10 pact of jets of motive ?uid discharged from said water-jet passage l2 may be similarly connected channel through said ports. to water jacket 27. _ ‘ Having thus described what I now conceive to be the preferred embodiment of my invention it , 2. A gas-turbine as set forth in claim 1, in which said rotor comprises a simple, substantially disk shaped member having its periphery recessed to will be understood that various modi?cations may 15 provide said channel. , be resorted to within the scope and spirit of the ARTHUR H. MATTHEWS. invention as de?ned by the appended claims.