Hot-gas reciprocating machine comprising two or more working spaces, provided with a control device for the supply of working medium to the said working spaces

A hot-gas reciprocating machine comprising two or more working spaces, the volumes of which can be varied at a mutual phase difference by piston-like bodies which are coupled to a crank shaft;

• a working medium performing a thermodynamic cycle in each of the said working spaces during operation, each of the working spaces being connected, via an associated supply duct which includes a non-return valve which opens in the direction of the relevant working space, to a control device which, during each revolution of the crank shaft, successively connects each of the supply ducts separately to a source of pressurized working medium;
• said control device comprising at least one control member which is slidable in a housing in the direction of its longitudinal axis under the influence of medium pressures which act on the control member in a mutually opposed sense, said housing comprising at least one inlet port which is connected to the source and at least one outlet port which is connected to the supply duct, characterized in that the control device is constructed so that each control member is controlled exclusively as a slide by two mutually phase-shifted cycle pressures which are associated per control member with different working spaces or, relative to the control members mutually, with different pairs of working spaces.