IMPROVED NOZZLE OF STIRLING ENGINE Russian patent published in 2004 - IPC

FIELD: mechanical engineering; engines. SUBSTANCE: proposed nozzle for external combustion engine contains body and shell inside outer body. Shell forms, at least partially, central combustion chamber, air intake device from which admitted air is directed along surface of inner wall of body for cooling the body, and guides to direct admitted air into combustion chamber. Guides direct admitted air so that, when nozzle operates, admitted air cools shell before getting into combustion chamber. Nozzle includes also heat exchange means in which admitted air, after cooling the body, is heated before delivery to shell, fuel feed device to deliver fuel into combustion chamber, fuel igniter and gas exhaust device. Outer body, shell, heat exchange means and guides from number of channels around combustion chamber. Arrangement of said channels provides maximum heat exchange between exhaust gases and admitted air. EFFECT: simplified design, provision of nozzle for external combustion engine which solves the problem of effective heat exchange. 9 cl, 2 dwg