Externally heated regenerative heat engine and machine

摘要

The invention comprises two cylindrical working cylinders in which a circular displacement piston is made to roll along each of the cylinder walls by means of an eccentric, which piston by means of two sprung sealing strips divides the volume of the working cylinder into two working chambers. The two eccentrics are fixed on a common shaft and are jointly driven by an auxiliary motor; eccentrics and the planes of separation defined by the sealing strips are rotated in opposition to one another approximately by 90 DEG . The upper working chambers of the two working cylinders divided by the sealing strips and eccentrics are directly connected to one another by way of a heating heat exchanger, a heat recovery unit and a cooler, the corresponding lower working chambers by a line, and filled with a gaseous or vapour working medium at high pressure. If heat is fed to the working gas by way of the heating heat exchanger and a smaller amount of heat withdrawn from it in the cooler, a heat engine or a heat pump is obtained according to whether the circular piston of the heated working vessel leads or lags behind that of the cooled working cylinder. For improved thermal insulation of the heated working cylinder this and the piston rotating in it are composed of ceramic material.