摘要:
57 A thermal engine 1 0 of the type having a displacer body 24 movable between the hot end and the cold end of a chamber 12 for subjecting a fluid within that chamber 12 to a thermodynamic cycle and having a work piston 26 driven by the fluid for deriving a useful work output is improved by provision of a working gas recovery system for controlling leakage of working gas from the displacer chamber 1 2, and a compound work piston arrangement 26,38 for preventing leakage of hydraulic fluid around the work piston 26,38 into the displacer chamber 12.
摘要:
This Stirling machine comprises a transfer piston (6, 6a) and a moving part (14) of a generator or of an electric motor, the transfer piston (6, 6a) periodically displacing a working gas between an expansion chamber (V E ) and a compression chamber (V c ) which chambers are respectively associated with two working faces of the transfer piston (6, 6a) of which the cross-sectional area ratio a c /a E is > 0.35 so that its displacement along an axis X oriented towards the expansion volume (V E ) generates an in-phase working gas pressure component P x that opposes the displacement of the piston (6, 6a), so that all of the mechanical energy produced is transmitted to the moving part (14). This machine comprises a resonant second piston (10) coupled to the transfer piston (6, 6a) by a quantity of energy that is proportional to the pressure component P x .
摘要:
An apparatus for effecting the lubrication of expansible chamber devices of the type having a cylinder with a piston reciprocating therein and having fluid flowing in and out of the chamber. The invention is particularly suitable for free piston Stirling engines and pumps. A torque force is applied to the piston causing it to spin sufficiently to entrain and drag along its outer surface some of the fluid in the expansible chamber so as to separate its outer surface from the wall of the cylinder.
摘要:
Stirling engine which may be used as a heat pump, which consists of a hot half and a cold half. Both halves are connected by two lines which constitute a counterflow heat exahnger or in which a counterflow heat exchanger is mounted. Moreover, a mutual shaft, to which in the hot half a large and a small piston are mounted and to which in the cold half a large and a small piston are mounted, connects both parts. For every up or down going movement of the shaft, a complete Stirling cycle is performed. If desired, the shaft may be replaced by a hydraulic interconnection.
摘要:
Sont décrits un moteur qui combine un moteur thermique à cycle Stirling de type Alpha et un mécanisme à résonance magnétoélectrique adaptable pour faire office de générateur électrique et de pompe à chaleur électrique (Fig. 2). Un tel moteur à résonance et à cycle Stirling (Fig. 2) présente un dispositif mécanique simplifié avec un nombre minimum de pièces en mouvement à l'intérieur d'un carter (16) hermétiquement scellé et lubrifié en permanence, est entièrement automatique, démarre automatiquement, et est autorégulé en service en ce que le mouvement mécanique des pistons (14, 15) est maintenu dans une relation de phase appropriée par un circuit électronique à verrouillage de phase en quadrature. Ce moteur peut aisément utiliser de multiples combustibles en tant que générateur électrique et de multiples sources de courant (cc ou ca) en tant que pompe à chaleur électrique.
摘要:
Thermal machine (12) of the type having a machine body with a main axis extending between a thermal end (16) and a work end (18), said machine body being comprised of a plurality of axial body sections (20, 22), a working fluid at relatively high pressure in a chamber (24) defined in said body and a displacer element (34) reciprocable in said chamber (24) for displacing the working fluid between a hot space and a cold space of said chamber (24) for subjecting the fluid to a thermodynamic cycle in cooperation with a work piston (36), further comprising outer means (56) compressively pre-loading said machine body between said ends (16, 18) for maintaining said body sections (20, 22) in axially assembled operative relationship.
摘要:
A thermocompressor utilizing a modified Stirling cycle is disclosed having a self-oscillating free piston driven by a thermal lag heating chamber connected to the hot end of the cylinder. A cylinder bypass containing a regenerator and cooling chamber provides a coasting region of the cylinder for the piston. The cylinder bypass is connected to the heating chamber via a conduit passing through a nipple in the hot end of the cylinder, with a very thin gap around the nipple to allow thermal lag driving of the cup-shaped free piston by the heating chamber without losing very much compressible fluid along the gap, from the conduit. The small amount of lost fluid is merely not heated thoroughly. During the cooling portion of the Stirling cycle, a check valve and short conduit in the nipple allow the gas in the cylinder hot space to bypass the heating chamber and flow directly through the nipple to the first-mentioned conduit and thence to the regenerator in the cylinder bypass for cooling, thereby avoiding unnecessary fluid drag and heating in the heating chamber during the cooling portion of the Stirling cycle.
摘要:
A machine which combines an Alpha-type Stirling cycle thermal machine and a magnetoelectric resonance mechanism adaptable to be useful both as an electric generator and an electric heat pump (Fig. 2). Such a Stirling cycle resonance machine (Fig. 2) has a simplified mechanical arrangement with a minimum number of moving parts within a hermetically sealed and permanently lubricated housing (16), is fully automatic, self-starting, and self-regulating in operation in that the mechanical motion of the pistons (14, 15) is maintained in appropriate phase relationship by an electronic quadrature phase-locking circuit. It can readily use multiple fuels as an electric generator and multiple electric power sources (DC or AC) as an electric heat pump.
摘要:
A machine which combines an Alpha-type Stirling cycle thermal machine and a magnetoelectric resonance mechanism adaptable to be useful both as an electric generator and an electric heat pump (Fig. 2). Such a Stirling cycle resonance machine (Fig. 2) has a simplified mechanical arrangement with a minimum number of moving parts within a hermetically sealed and permanently lubricated housing (16), is fully automatic, self-starting, and self-regulating in operation in that the mechanical motion of the pistons (14, 15) is maintained in appropriate phase relationship by an electronic quadrature phase-locking circuit. It can readily use multiple fuels as an electric generator and multiple electric power sources (DC or AC) as an electric heat pump.