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O f.\ .\ 3,167,914 UnitedStatesPatentO ice am.,Feb,2,.E l2 3,167,914 GAS TURBINE ENGINE HOUSING Giovanni F. Savonuzzi, Birmingham, Mich., assignor to Chrysler Corporation, Highland Parli, Mich., a corpo ration of Delaware ' FiledJuly3,1961,Ser.No. 121,672 12Claims. (Cl.oil-39.51) This invention relates to the assembly and arrangements of parts in a gas turbine engine particularly adapted for 10 automotive use. An object of the present invention is to provide im proved means for supporting and housing the rotors, com pressor, burners, and speed reducing gearing for an auto motive gas turbine engine which is particularly simple, compact, and economical in structure and eñicient in operation. Another object is to provide an improved gas turbine engine having an inner housing containing an annular passageformotivegases. Aroundtheinnerhousingis20 an outer housing including an outer shell adapted to be fabricated primarily from sheet steel and having three cylindrical outer extensions projecting radially of the axis of the annular passage at equally spaced locations around said axis to define three cylindrical regenerator chambers. Atthebaseofeachregeneratorchamber, the inner housing provides a plane platform adapted to support an axial flow regenerator, the axis of rotation of each regenerator extending centrally through the asso ciatedsupportingplatformperpendicularlytheretoandto 30 theaxisoftheannulargaspassage. Axiallyopposite ends of the inner housing are supported by annular sup porting structures coaxial with said gas passage and car riedbyaxialendwallsoftheouterhousing. Alsocoaxial with the gas passage andcarried by the end walls re spectively of said outer housing are a pair of annular bear ing supports which extend toward each other into the space bounded by the inner wall of the annular gas pas sage and provide journal means for the shafts of a com pressordrivingrotorandapowerrotorrotatablecoaxially40 within said space. Another object is to provide such an engine wherein said annular supporting structures slidably engage conical end portions of said inner housing under resilient tension ataxiallyoppositeendsthereoftoaccommodatethermally 45 induced relative dimensional changes between said inner and outer housings. Other objects are to provide such an engine wherein the bearing support for the compressor driving rotor shaft isconnectedtoitsrespectiveouterhousingendwallby 50 web means adjacent the axis of rotation to minimize thermalstressesattheregionoftheconnection. The latter bearing support also extends radially to an annular rim in sliding engagement with the end wall at a location spacedfromsaidregionofconnectiontoprovideadequate 55 leverage for supporting the compressor driving rotor. fromthecompressorWall. Theannularspacebetweenthe baille and outer shell comprises an inlet air duct connect ing each regenerator chamber with the radially outer dis chargeendofsaiddiffuser. Betweenthebailleandbear ing support for the compressor driving rotor shaft is an annular chamber containing a pair of spirally arranged burners adapted to receive combustion supporting inlet air from the regenerators and to discharge the gaseous combustion products into the upstream end of the annular motive gas passage. > Another object is to provide an engine of the above character wherein the shaft for the power rotor is con nected with a power take-off gear by means of a speed reducing gear train contained within the space bounded by the annular bearing support for the power rotor. Still another object is to provide such an engine wherein the regenerator supporting platform is welded to the base of the cylindrical regenerator chamber around approxi mately half the circumference thereof located downstream ofaplanetransversetotherotoraxisandcontainingthe axes of the three regenerators, the upstream half of said platform being spaced from said outer shell to provide communication between said regenerator chambers and aforesaid annular air inlet passage. Other objects of this invention will appear in the fol lowing description and appended claims, reference being had to the accompanying drawings forming a part of this specification wherein like reference characters designate corresponding parts in the several views. FIGURE lisalongitudinalmidsectionalviewthrough the rotor axis of a gas turbine engine embodying the presentinvention. FIGURE 2isatransversesectionalviewtakeninthe direction of the arrows substantially along the line 2--2 ofFIGURE1. FIGURE 3isatransversesectionalviewtakeninthe direction of the arrows substantially along the line 3_3 ofFIGURE1. FIGURE 4isareducedelevationalviewofthebearing supportforthecompressordrivingrotorshaft,takenin the direction of the arrows along the line 4~4 of FIG URE 1. FIGURE 5 is a sectional view taken in the direction of the arrows substantially along the line 5_5 of FIG URE 1,theregeneratorbeingremovedtoillustratedetails of the regenerator supporting platform. FIGURE 6isalongitudinalmidsectionalviewshowing a modification of the inner housing and the supporting structure therefor. FIGURE 7isanenlargedViewoftheportionofFIG URE 6enclosedwithinthecircle7. FIGURE 8isanenlargedViewoftheportionofFIG URE 6enclosedwithinthecircle8. FIGURE 9isatransversesectionalviewtakeninthe directionofthearrowssubstantiallyalongtheline9-9 ofFIGURE6. Another object is to provide such an engine wherein the end wall which carries the bearing support for the compressor rotor comprises a compressor wall and co operates with an outer portion of said shell to define a 60 housing for an axial flow compressor mounted on an axial endwise extension of the shaft for the compressor driving rotor. Thecompressordischargesradiallyintoanannu lar diiîuser formed between the compressor wall and outer shell portion which are connected together and spaced apartbysuitablediffuserblades. A resilientannularbaiiie carried by the compressor wall coaxially with the rotors extends toward the juxtaposed axial end of the inner housing and terminates in a conical surface yieldingly 70 portion 11 is welded to an annular reinforcement 13 and slidably engaging a mating conical surface of the inner suitably secured -by bolts 14 to an end closure 15 which housing to urge the latter in the direction axially away may comprise an aluminum casting and is formed to pro 65 Referring to the drawings a gas turbine engine is illus trated by Way of example comprising an outer housing formed primarily from a sheet steel outer shell having coaxial cylindrical upstream and downstream end por tions11and12respectively. Thelargercylindricalend It is to be understood that the invention is not limited in its application to the details of construction and ar rangement of parts illustrated in the accompanying draw ings, since the invention is capable of other embodiments and of being practiced or carried out in various ways. Also it is to be understood that the phraseology or ter minology employed herein is for the purpose of descrip tion and not of limitation.PDF Image | GAS TURBINE ENGINE HOUSING
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