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suitably secured to a reinforcing ring 79 welded to the housing 10 around the outer edge of the associated cylin drical wall 20. 6 ing to form a discharge opening 106 in communication with the inlet of annular passage 34. At the region of the opening into annular passage 34, the wall of discharge opening 106 is partitioned, one edge being welded at 107 to the outer shroud 33 and the other edge 108 being sleeved over an extension of the supporting ring 95 to completeacontinuousfluidtightcommunicationfrom 3,167,914 Mounted on the platform 25 within each regenerator chamber 21 is a cylindrical regenerator disc 80 rota-table about a central hub 81 and comprising a matrix of sepa rategaspassagesextendingaxiallyofhub81. Defining the lower and upper rims of each regenerator 80 are an nular L-section brackets 82 and S3 respectively. The cylindricallegofbracket83terminatesinapluralityofl0 annularpassage34drivinglyengagetherotorblades52 resilient fingers 84 spaced around and offset from the cir cumference of the associated regenerator 80 and formed with a circumferential outwardly opening groove adapted to receive a mating annular bead 85 integral with the innercircumferenceofaringgear86. Thebead85is15 theregionboundedbysectoropenings27and74aandare pivotalwithinthematinggroovetoenablethermaldis tortion of the regenerator 80 without causing deflection of ring gear 86 from its desired position coaxial with the axisofhub81. Accordingly,thegear86ismaintainedin driven engagement with pinion gear 87 with a minimum ofnoiseandwear. Pinion87ismountedWithinaplate 88 carried by cylindrical wall 20 of outer housing 10. Preferably a plurality of idler gears also carried by hous ing 10 engage ring gear S6 in the manner of gear 87 at locations around the circumference of the regenerator 25 shafts 45 as determined by rotation of ring 48 on cylin 80 to maintain the latter in its desired alignment centered on platform 25. Extending completely around the low pressure sector opening 27 is a suitable seal 89 which slidably engages the radially inner surface of the associated regenerator 80 in sealing engagement and which is also secured to platform25. A similarseal90securedtoplate74ex tends completely around the sector opening 74a immedi atelyabovetheopening27andslidablyengagestheradi ally outer surface of the associated regenerator in seal ingengagement,theseals89and90beingeffectivetopre vent the flow of high pressure gases from chamber 21 into the sector openings 27 and 74a. Also extending around the high pressure sector opening 26 is a seal 91 similartoseal89andsupportedbyplatform25. The latter seal is designed to prevent flow of high pressure gases from chamber 21 into `the sector opening 26. exterior of the annular support 112, along the interior of the inner housing portions 10 and 23 as illustrated in FIGURE l,atoppositesidesofthebulkhead32which partitions the high temperature and high pressure inlet Inaccordancewiththearrangementoftheregenerators 80 and seals described, the high pressure combustion supporting gases entering each chamber 21 from the air inletduct31flowsradiallyinwardlythroughtheregen erator gas passages to absorb heat therefrom and are discharged into a region 92 of intermediate pressure irn mediatelybelowsectoropening26. Fromregion92, thehightemperaturegasesflowintothegenerallyannu 50 compriseaheatresistanceceramic,extendsaroundthe lar area 93 bounded by the support 5S, baille 67, and an extension 94 of support 58 which terminates in an an nularsupport95coaxialwiththerotors50and51. The support 95 carries a plurality of circumferentially spaced fixednozzles96locatedwithintheannulargaspassage 55 gasesofchamber92fromthecomparativelylowtempera 34 in supporting engagement with outer shroud 33. Supported within annular chamber 93 are a pair of hollowcylindricalcombustionchambers97,FIGURE 2, ture and low pressure exhaust gases at 109, and the con fronting portions of annular baille 67 and support 58 enclosingtheburners97. In'ordertoequalizethepres sure at opposite sides of end wall 63, the latter is provided having a plurality of annularly arranged air inlet open ings 98. Each combustion chamber 97 is closed at one 60 with a .plurality of pressure equalizing ducts 124 at the end by a plate 99 secured by a dished cover 100 to a reinforcing ring 101 suitably secured to portions of the outerhousing10. AsillustratedinFIGURE 2,thebaffle 67 at the region of 4the burners 97 comprises two parts, eachextendingcoaxiallywiththeshellportion11froma65 modatethermallyinducedrelativedimensionalchanges, Instead of being welded at 24 to the outer housing 10, as inFIGURE 1,theportionsoftheinnerhousing23be tween the platforms 25 extend arcuately at 23a and ter minate adjacent plate 19 in an axially directed flange pfortion of one of each of the reinforcing rings 101 and being welded to the shell portion 11 adjacent the com bustion chamber 97 which is supported by the other of the reinforcing rings 101. Each end closure 99 and plate 100supportafuelnozzle103andigniter104,whichdis 70 weldedtoanannularreinforcement126coaxialwiththe charges fuel into the combustion supporting air and ig ’ nites the mixture in accordance with customary practice. Extendingspirallyfromeachcombustionchamber97 oppositely from the end closure 99 is a tapering gas duct rotors 50 and 51. The reinforcement 126 is provided with a conical surface 126a in sliding engagement with a matingconicalsurface112:1ofsupport112,FIGURE 8. By virtue of the resiliency of baffle 67 and the pressure 105,lthesmallendsofthetwoducts105eventuallymerg 75ofthemotivegasesurginginnerhousing23totheright the burners 97 to the gas passage 34. Thus motive gases discharged from the burners 97 into and 53 and then exhaust into a collecting chamber 109 immediately below the low pressure sector opening 27 in platform25. Thereaftertheexhaustgasesflowradially outwardly through the matrix of the regenerator 80 at exhaustedintodome75. Duringthepassageoftheex haust gases through the regenerator, the latter is heated, whereupon as the heated portion of the regenerator is continuously rotated to the region of the inlet gases flow ing through sector opening 26, these latter gases are heatedbypassingthroughtheregenerator. Theenergy of the motive gases flowing in passage 34 is selectively prorated between the rotors 50 and 51 by angularly ad justing the nozzles 45a in accordance with pivoting of drical platform 49. The rotor shaft 55 is journalled in bearings 110 and 111 carried by an annular bearing support 112 which is similar in construction to bearing support 58 and which terminates in a flange 113 confined between plate 19 and flange17andsecuredtheretobythebolts18. Reinforcing web114,similartoweb59,issecuredtosupport112by bolts 115, the web 114 providing support for the bearing 111. Inthespacebetweenweb114andendplate19 and suitably mounted on the latter is a speed reducing geartrainindicatedgenerallybynumeral116. Thelatter operably connects shaft 55 with an axial power take-off shaft 117 for driving the vehicle and also with a radial power take-off shaft 118 for driving the pinion 87 and accordingly the regenerator 80 at low speed. A flange 119 at the inner end of support 112 is secured lto a radially inwardly directed flange 120e of an annular inner shroud extension120. Thelatterextendsgenerallyaxiallyfrom adjacent the roots of the blades 53 to adjacent the sup port 112 and cooperates with the latter to define the terminalofannulargaspassage34. Theradialextension 120a is clamped against flange 119 by means of a clamp ring 121 and bolts 122. Suitablethermalinsulatingmaterial123,whichmay region of the webs 60. A modificationoftheinventionisillustratedinFIG URES 6and8whereintheinnerhousing23isadjustably mounted within the outer housing 10 in order to accomPDF Image | GAS TURBINE ENGINE HOUSING
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