GB1392105A - Rotary positive-displacement machines - Google Patents

Abstract

1392105 Rotary positive-displacement machines E M RYLEWSKI 31 May 1972 [3 June 1971 (3)] 25365/72 Heading F1F A machine that may be used as an hydraulic motor has wheels 62 in slots 56 1 ÀÀ 56 4 formed in a rotor 30 with an annular convex surface 77 abutting the top faces 102 of spiral ribs 101 on a stator 20 containing inlet and outlet pipes 34, 39, which communicate with the inner and outer ends of passages 91 a ÀÀ 91 d between said ribs, vanes 69 on the wheels being swept along said passages by the working fluid. To form an I.C. engine the machine may be connected in series with a similar one through a combustion chamber (523), Fig.1a (not shown), one machine serving as a compressor and the other as a motor driven by the combustion products. The configurations of the passages 91a ÀÀ 91d are described in detail with reference to Figs.12 to 14 (not shown), and can be such as to produce either the desired compression, or expansion, ratio and gradient or a constant volume flow when the working fluid is a liquid. Seals (316), Fig.15 (not shown), may be lodged in the top faces of the spiral ribs. The vanes may comprise overlapping halves pressed against the flanks of the ribs by springs, Figs.16 and 17 (not shown). Alternatively, the vanes have seals in the edges thereof, Fig.18 (not shown). Each of the wheels may be replaced by a pair of wheels with the teeth thereon disposed alternately, Figs.19 to 21 (not shown). The wheels may be orientated non- radially, Fig.22 (not shown). As a pump or compressor the machine may have inlets 221, 222, Fig.23, a common outlet 225 and pairs of intermeshing wheels 207, 208. Alternatively, the wheels on opposite sides of the rotor are disposed 45 degrees apart circumferentially of the rotor, Figs.25 and 26 (not shown), and in this form the machine may be arranged to operate as an I.C. engine with the spiral passages connected in series through a combustion chamber, Fig.25a (not shown). A machine similar to that shown in Fig.23 may have a single central inlet (294) and a single lateral outlet (298), Figs.27 and 28 (not shown). The inlet may contain an impeller, Fig.29 (not shown). In a machine similar to that shown in Figs. 1 to 3 the positions of the inlet and outlet are reversed, Fig.30 (not shown). The wheels may co-operate with two symmetrically disposed stators with the spiral passages thereof connected in series through a heat exchanger to effect air compression in two stages, Fig.31 (not shown). The machine according to Fig.31 may be adapted to work as an I.C. engine generally similar to that according to Fig.1a, Figs.32 to 35 (not shown). A rotor is described with reference to Figs.36 and 37 (not shown), in which sealing plates (957, 958, 961 and 962) are situated between the sides of the wheels and the respective slots, and a sealing ring (965) is fixed to the periphery of the rotor body. It is indicated that the wheels may be mounted in the stator and the spiral passages formed in the rotor.