Patent GB-649852-A (GB)
Title: Improvements in or relating to rotary engines or compressors
IPC: F01C9/00
Filed: 1948-08-04
Abstract: 649,852. Rotary engines. ABBEY, A. (Soc. De Constructions Mecano-Thermiques, C.O.M.E.T.). Aug. 4, 1948, No. 20635. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 7, 1949]. [Class 110(ii)] A multi-cylinder oscillating-vane engine or compressor of the type described in Specification 599,552, has side-by-side cylinders with rotors 27, 21, 61, 63 on concentric shafts 5, 7, oppositely acting chambers being in communication with each other for balancing purposes Cross-tubes 49, 51 which may have outer cooling tubes 5( connect diametrically-opposite chambers 44, 42, anc other tubes allow passage of fluid between similar cham bers in the engines 1, 3. The shaft 7, Fig. 1, is carried or bearing rings 15. A casing 35 has inwardly-extending walls 31, 32, 33 the rotary parts 1, 3 carrying locking rings 39. Vanes 17, 23 extenc outwards to the bores of the casing 35. An abutmen block 41, containing inlet and discharge valves, is fitted between each pair of vanes. The compressor unit has radial vanes attached to rotors 61, 63, the casing side walls 67, 65 extending inwards to packing pieces 69. Cooling passages are provided in the rotors and walls. The cross-section of the working-chambers may vary as illustrated in Figs. 5, 6, 7 (not shown). Fig. 8 shows another form of engine, the casing being built up of sections 91, containing cooling passages 119, secured together, before machining the working-chamber bore by bolts 97 and being welded at the inner and outer surfaces at 99. The oscillating member 105 has side walls extending partly up the sides of the vanes 103. Packing 115, and 123 is provided in the vanes 103 and abutments 41. The vanes are secured by studs 112 and bolts 113 passing through to the side cheeks of the member 105. Cooling passages are provided in the stator and rotor. Figs. 10, 11 show an engine-compressor unit in which high and low pressure compressors 181, 183 and an engine unit 151 have vanes which move relatively and alternately apart and towards one another, no abutment blocks being used. The engine has relatively-moving vanes 153, 159, secured to inner and outer cylindrical shafts 131, 133, the latter having slots 167 to allow the relative movement of the studs 157 carrying the vanes 153. The shaft 131 is supported at its ends by heads 135 having hubs 137 and the shaft 133 is carried by heads 143, both pairs of heads having beams on a stationary shaft 141. Vanes 153 are attached to ring 155 and vanes 159 attached to ring 161, packing 163 being provided. Valves control the admission of working fluid to spaces 169 to force pistons 153, 159 apart, and fluid compressed in spaces 171 is discharged through side passages. Working-fluid is then introduced into the spaces 171, now small, and the fluid compressed in spaces 169 discharged. The spaces 169, 171 are balanced diametrically. The vanes in the H.P. and L.P. compressors are fixed to the concentric shafts 131, 133 The clearances between the piston pairs may be adjusted by means of external gears 201, 203, 205 through the concentric shafts.