Abstract:
L'invention concerne un moteur (1) à combustion externe comprenant au moins : - un cylindre (3), - un piston (2) délimitant une chambre (6), - un déplaceur (11) déplacé par un organe d'entraînement (12), un réchauffeur (4) d'une zone chaude (10) et un refroidisseur (5) d'une zone froide (14) du cylindre (3), - un mécanisme (20, 21, 22) d'asservissement du mouvement en translation du piston (2) par rapport au déplaceur (11). Le moteur (1) comprend en outre un mécanisme (23 à 27) de retenue élastique exerçant au moins une retenue élastique du piston (2) dans une position de compression de la chambre ou une retenue élastique du piston (2) dans une position d'expansion de la chambre.
Abstract:
Disclosed is a hot gas engine comprising a cylinder (2), a working piston (4) that delimits a cylinder chamber which accommodates a working medium along with the cylinder cover (3), a displacement mechanism (5) that subdivides the cylinder chamber into a first working chamber (14) which is delimited by the working piston (4) and a second working chamber (15) which is delimited by the cylinder cover (3), a device (7) for heating the working medium, and a device (8) for cooling the heated working medium. The working chambers (14 and 15) are interconnected in a communicating manner via a regenerator (27). The heating device (7) encompasses a heating element (31) that can be mounted in a stationary fashion on the cylinder (2) and is provided with a heating area (33) which extends substantially across the entire cross section of the cylinder chamber (6) and a heating system (32) which is allocated to the heating element (31). Said embodiment allows the externally delivered heat to be efficiently transferred to the heating medium so as to be continuously effective across the entire cross section of the cylinder while allowing for a simple, compact design of the hot gas engine.
Abstract:
An energy converter (201) operating according to the Stirling, Ericsson, or similar thermodynamic cycle and being power-controlled by adjustment of the mean pressure of the working gas with the aid of at least one pressure tank (214) which is filled with working gas and connected to the cylinder(s) of the energy converter and in which the gas pressure is substantially higher than the mean pressure, thus enabling an increase of the latter; at least one gas pump (213) which at the exhaust side communicates with the pressure tank and at the inlet side generates a negative pressure enabling a decrease of the working-gas pressure; and valves (215, 216) for controlling both the pressure increase and decrease. Further, the energy converter accommodates at least one low-pressure tank, e.g. the crankcase (211), which is filled with working gas and in which the gas pressure is substantially below the mean pressure. The low-pressure tank communicates both with the inlet side of the gas pump and, via the valve for controlling the decrease in mean pressure, with the cylinder of the energy converter, the total volume of the low-pressure tank being much larger than the stroke volume of the energy converter.
Abstract:
본 발명은 폐열 회수에 의한 에너지 재생산 구조를 갖는 스털링 엔진에 관한 것이다. 이에 본 발명의 기술적 요지는 스털링 엔진의 디스플레이서 실린더 일측에 각종 산업용 또는 가정용 설비로부터 버려지는 폐열을 즉답(직착) 형태로 연결한 후 발생된 열적 변화(등온변화 및 등적변화)에 따라 디스플레이서 피스톤과 로드의 직선 왕복운동이 휠 바퀴의 회전운동으로 가변되도록 하되, 상기 휠 바퀴에는 자석체가 부설되도록 형성되어 실린더 로드와 링크 결합에 의해 원주방향으로 회전하면 자석체 주변에 부설된 전력선 코일로부터 자기장이 형성되어 전력을 생산하도록 형성되고, 휠 바퀴의 회전시 발생되는 원심력은 실린더 로드의 직선운동을 보다 강력하게 추진하도록 형성되며, 특히 실린더 본체 하부에 결합된 하판에는 열전달 효율을 높이도록 열전달 면적 확장용 전도핀이 부설되어 열전달 성능을 배가시키도록 형성되고, 확장된 열전달 면적에 의해 실린더는 흡열과 방열 성능이 크게 개선되어 저온식 폐열 설비에도 적용이 용이한 것을 특징으로 한다.
Abstract:
A thermal cycle engine (96) having a heat exchanger for transferring thermal energy across the heater head (100) from a heated external fluid to the working fluid. The heat exchanger has a set of heat transfer pins (124) each having an axis directed away from the cylindrical wall of the expansion cylinder (115), or, alternatively, a set of fins substantially aligned with the axis of the expansion cylinder. The height and density of the heat transfer pins (124) may vary with distance in the direction of the flow path, and the pin structure may be fabricated by stacking perforated rings in contact with a heater head. A ring burner supplements the main combustor for supplying additional fuel to cause additional combustion of the exhaust gas. A regenerator (134) for the thermal cycle engine (96) has a random network of fibers formed to fill a specified volume and a material for cross-linking the fibers at points of close contact between fibers of the network.
Abstract:
Bed of the water bed type comprising a seat cushion or bed cushion having a support cushion (2) of an elastic foam plastic or foam rubber material which is enclosed in a water sealed and gas sealed bed tick (1) of a pliable but nonelastic material. The length and the width of the support cushion is substantially the same as those of the bed tick whereas the height of the bed tick is larger, for instance 20% lager than the height of the support cushion. The support cushion is formed with several vertical through holes (5) having a cross section corresponding to a circle the diameter of which is 45 - 75% of the height of the support cushion. The water bed may be formed with side edges which are stiffer than the remaining portions of the bed or it may be immersed in a base plate having a frame (16) surrounding the entire water bed portion. The water bed portion may be substantially less than the base plate (14) and the water may be secured in the base plate in that the sides (17) of the base plate in which the water bed is immersed are undercut and/or in that the water bed is formed with connection tongues (18) which are introduced in longitudinal slots (19) of the base plate.
Abstract:
An improvement is provided to a pressurized close-cycle machine that has a cold-end pressure vessel (70) and is of the type having a piston (60, 128) undergoing reciprocating linear motion within a cylinder containing a working fluid heated by conduction through a heater (52, 106) by heat from an external thermal source. The improvement includes a heat exchanger for cooling the working fluid, where the heat exchanger is disposed within the cold-end pressure vessel by welding or other methods. A coolant tube (130) is used to convey coolant through the heat exchanger.
Abstract:
A thermal cycle engine having a heat exchanger for transferring thermal energy across the heater head from a heated external fluid to the working fluid. The heat exchanger has a set of heat transfer pins each having an axis directed away from the cylindrical wall of the expansion cylinder. The height and density of the heat transfer pins may vary with distance in the direction of the flow path, and the pin structure may be fabricated by stacking perforated rings in contact with a heater head. Ribs are provided interior to the heater head to enhance hoop strength and thermal transfer.
Abstract:
A regenerator for a thermal cycle engine and methods for its manufacture. One method for manufacturing a regenerator has steps of providing a length of knitted metal tape and wrapping a plurality of layers of the tape in an annular spiral. Another method for manufacturing a regenerator has steps of providing a length of metal tube having a tube axis and axially compressing the tube along the tube axis thereby generating a bellows.
Abstract:
A Stirling engine which uses a dual pressure shell surrounding the high pressure and temperature engine components. Space between the shells is filled with an incompressible and insulating liquid material, such as a liquid salt. The liquid may have a filler material to prevent excessive movement. The liquid provides a time varying pressure field, driven by the pressure variations in the Stirling engine working fluid, which cancels the pressure differential on heat transfer tubing. A continuous heat extraction burner reduces flame temperature and nitrous oxide emissions from the burner. The combination described provides a Stirling engine that operates at significantly higher temperatures and pressures relative to existing technology.