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    Alpha Stirling engine
    2.
    发明授权
    Alpha Stirling engine 有权

    公开(公告)号：US12071910B2

    公开(公告)日：2024-08-27

    申请号：US18033826

    申请日：2021-10-20

    Applicant: EnergyIntel Services Ltd

    Inventor： Martin Nilsson

    IPC: F02G1/045 ,  F02G1/04 ,  F02G1/044

    CPC classification number: F02G1/045 ,  F02G1/04 ,  F02G1/044 ,  F02G2243/30

    Abstract: An alpha type Stirling engine is provided and comprises an expansion cylinder and a compression cylinder, a regenerator, a cooler, and a heater. Each one of the expansion cylinder and the compression cylinder has a movable piston connected to a respective linear electric generator/motor, wherein the Stirling engine further comprises a control unit which is operatively connected to the linear electric generators/motors and which is configured to control the linear electric generators/motors individually so as to enable a different stroke length and/or motion profile of the piston in the expansion cylinder compared to the piston in the compression cylinder.

    Multi-stage stirling cycle machine and a steady-state operating parameter control method therefor
    4.
    发明授权
    Multi-stage stirling cycle machine and a steady-state operating parameter control method therefor 有权

    公开(公告)号：US11795890B2

    公开(公告)日：2023-10-24

    申请号：US17918296

    申请日：2021-04-26

    Applicant: Li Wang

    Inventor： Li Wang

    IPC: F02G1/045 ,  F02G1/044 ,  F02G1/04

    CPC classification number: F02G1/045 ,  F02G1/04 ,  F02G1/044 ,  F02G2243/30 ,  F02G2243/40

    Abstract: A multi-stage Stirling cycle machine and a steady-state operating parameter control method therefor are disclosed. In the Stirling cycle machine, a mechanical energy input piston, a mechanical energy transfer double-acting free piston, and a mechanical energy output piston constitute a plurality of Stirling working units which are arranged in stages. The mechanical energy input piston is connected to a mechanical energy input apparatus. The mechanical energy output piston is connected to a mechanical energy output apparatus. When the Stirling cycle machine is used as an engine, a relatively small amount of mechanical energy is input into a mechanical energy input piston in a set of pistons, the mechanical energy is amplified by a multi-stage Stirling unit, and a relatively large amount of mechanical energy is then output by a mechanical energy output piston.

    ENGINE APPARATUS AND METHOD FOR OPERATION
    5.
    发明公开
    ENGINE APPARATUS AND METHOD FOR OPERATION 审中-公开

    公开(公告)号：US20230175456A1

    公开(公告)日：2023-06-08

    申请号：US18161523

    申请日：2023-01-30

    Applicant: Hyliion Holdings Corp.

    Inventor： Joshua Tyler Mook ,  Kevin Michael VandeVoorde ,  Aigbedion Akwara ,  Michael Robert Notarnicola

    IPC: F02G1/044

    CPC classification number: F02G1/044

    Abstract: A piston apparatus includes a plurality of piston assemblies respectively having a first piston body and a first piston disposed within a first volume defined by the first piston body, a second piston body and a second piston disposed within a second volume defined by the second piston body, and a connection member coupled to the first piston and the second piston. The first and second volume respectively include an expansion chamber and a compression chamber defined by opposite sides of the corresponding piston. The respective expansion chambers fluidly communicate with a corresponding compression chamber of another one of the piston assemblies. The first volume of a first piston assembly fluidly communicates with the first volume and the second volume of a second piston assembly, and the first volume of a third piston assembly fluidly communicate with the first volume and the second volume of the second piston assembly.

    A NEARLY FULL ADIABATIC ENGINE
    6.
    发明申请
    A NEARLY FULL ADIABATIC ENGINE 审中-公开

    公开(公告)号：US20180238265A1

    公开(公告)日：2018-08-23

    申请号：US15751557

    申请日：2016-02-19

    Applicant: Barry W. JOHNSTON

    Inventor： Barry W. JOHNSTON

    IPC: F02G1/044 ,  F01K25/10 ,  F02G1/053 ,  F16J15/52

    CPC classification number: F02G1/044 ,  F01K25/10 ,  F02G1/043 ,  F02G1/0535 ,  F02G2270/40 ,  F02G2280/50 ,  F02G2290/00 ,  F16J15/52

    Abstract: A near adiabatic engine has four stages in a cycle: (1) a means of adiabatically expanding the working fluid during the downstroke from a high pressure/temperature level to a low level; (2) a means of cooling the working fluid at Bottom Dead Center (BDC); (3) a means of adiabatically compressing that fluid from a low pressure/temperature level at BDC to the higher level at Top Dead Center (TDC); and finally, (4) a means of passing that working fluid back to the high pressure/temperature source in a balanced pressure environment so as to minimize the resistance of that flow. This disclosure teaches the means of achieving (2) and (3) as follows: (2) a means is disclosed of BDC cooling of the expanded working fluid in the working chamber, and (3) a means is disclosed of adiabatically compressing the working fluid into the pump chamber before cycling the fluid.

    EXTERNAL COMBUSTION ENGINE WITH SEQUENTIAL PISTON DRIVE
    7.
    发明申请
    EXTERNAL COMBUSTION ENGINE WITH SEQUENTIAL PISTON DRIVE 审中-公开

    公开(公告)号：US20170321630A1

    公开(公告)日：2017-11-09

    申请号：US15330921

    申请日：2014-12-03

    Applicant: Seppo LAITINEN

    Inventor： Seppo LAITINEN

    IPC: F02G1/044 ,  F01B7/16 ,  F02G1/05

    CPC classification number: F02G1/044 ,  F01B7/16 ,  F02G1/043 ,  F02G1/05 ,  F02G2244/00 ,  F02G2244/50 ,  F02G2244/54 ,  F02G2270/80

    Abstract: Method and system for efficient energy recovery from heat source with external combustion engine. Invention include sequentially operating drive mechanism for power pistons and displacement pistons of gamma type Stirling engine, providing nearly ideal pistons operation sequence. Stirling engine is supplemented with working flow fluid control and separation member between working fluid reheater and rest of the engine during high pressure stage. Working fluid is circulated in flow control via one or more consecutive displacement cylinder/power cylinder stages before reheating. Control system is directing working fluid from inlet port to the first displacement cylinder, further to the first power cylinder and after expansion either to reheating or to the next displacement cylinder. Low temperature working fluid is finally directed back to the counter flow type reheater.

    Double-acting modular free-piston stirling machines without buffer spaces
    8.
    发明授权
    Double-acting modular free-piston stirling machines without buffer spaces 有权

    公开(公告)号：US09689344B1

    公开(公告)日：2017-06-27

    申请号：US14146146

    申请日：2014-01-02

    Applicant: David Ray Gedeon

    Inventor： David Ray Gedeon

    IPC: F02G1/04 ,  F02G1/044 ,  F02G1/057

    CPC classification number: F02G1/044 ,  F02G1/0435 ,  F02G1/057 ,  F02G2244/54 ,  F02G2280/10

    Abstract: Multiple free-piston stirling-cycle machine modules are connected together in double-acting configurations that may be used as engines or heat pumps and scaled to any power level by varying the number of modules. Reciprocating piston assemblies oriented in balanced pairs reduce vibration forces. There are no buffer spaces. Linear motors or generators are packaged inside piston cavities entirely within the module working spaces. The external heat-accepting and heat-rejecting surfaces in one embodiment are directed along inward-facing and outward facing cylinders, and in another embodiment along parallel planes, simplifying thermal connections to the external heat source and sink.

    STIRLING CYCLE AND LINEAR-TO-ROTARY MECHANISM SYSTEMS, DEVICES, AND METHODS
    10.
    发明申请
    STIRLING CYCLE AND LINEAR-TO-ROTARY MECHANISM SYSTEMS, DEVICES, AND METHODS 审中-公开
    搅拌循环和线性转向机械系统，装置和方法

    公开(公告)号：US20170022932A1

    公开(公告)日：2017-01-26

    申请号：US15151325

    申请日：2016-05-10

    Applicant: Cool Energy, Inc.

    Inventor： Brian Nuel ,  Lee S. Smith ,  Samuel P. Weaver ,  William Gross ,  Stefan Berkower

    IPC: F02G1/044

    CPC classification number: F02G1/044 ,  F01B3/02 ,  F01B3/04 ,  F02G1/00 ,  F02G1/04 ,  F02G1/043 ,  F02G2244/00 ,  F02G2270/42 ,  F02G2270/55

    Abstract: Methods, systems, and devices are provided that may include Stirling cycle configurations and/or linear-to-rotary mechanisms in accordance with various embodiments. Some embodiments include a Stirling cycle device that may include a first hot piston contained within a first hot cylinder and a first cold piston contained within a first cold cylinder. A first single actuator may be configured to couple the first hot piston with the first cold piston such that the first hot piston and the first cold piston are on different thermodynamic circuits. The different thermodynamic circuits may include adjacent thermodynamic circuits. The Stirling cycle configuration may be configured as a single-acting alpha Stirling cycle configuration. Some embodiments include a linear-to-rotary mechanism device. The device may include multiple linkages. The device may include a cam plate coupled with the multiple linkages utilizing a cam and multiple cam followers. The linkages may include Watt linkages.

    Abstract translation: 提供了可以包括根据各种实施例的斯特林循环配置和/或线性到旋转机构的方法，系统和装置。 一些实施例包括斯特林循环装置，其可包括容纳在第一热气缸内的第一热活塞和容纳在第一冷气缸内的第一冷活塞。 第一单个致动器可以被配置为将第一热活塞与第一冷活塞联接，使得第一热活塞和第一冷活塞位于不同的热力学回路上。 不同的热力学电路可以包括相邻的热力学电路。 斯特林循环配置可以被配置为单作用阿尔法斯特林循环配置。 一些实施例包括线性到旋转机构装置。 该装置可以包括多个连接。 该装置可以包括利用凸轮和多个凸轮从动件与多个连杆联接的凸轮板。 连接可以包括瓦特连接。

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