公开(公告)号：US4417859A

公开(公告)日：1983-11-29

申请号：US81820

申请日：1979-10-04

申请人： Frank C. Praner

发明人： Frank C. Praner

IPC分类号： F01C1/20 ,  F01C1/36 ,  F01C19/00 ,  F01C20/00 ,  F01C20/14 ,  F01C20/24 ,  F01C20/26 ,  F01C21/00 ,  F01C21/08 ,  F01C21/10 ,  F01C21/18 ,  F02B75/02 ,  F04B49/02 ,  F01C1/12

CPC分类号： F01C21/006 ,  F01C1/20 ,  F01C1/36 ,  F01C19/00 ,  F01C21/003 ,  F02B2075/027

摘要： An external combustion engine is disclosed of the type including two or more circular rotors rotatably supported, one of the rotors acting as a power rotor and rotating in tangential contact with the other sealing rotor. The power rotor is formed with a radially projecting piston passing into a mating recess with the sealing rotor at a corresponding circumferential location. Steam or other working fluid is admitted via an intake port located opposite one face of the power rotor to cause rotation of the power rotor by expansion of the fluid in a working chamber defined by the space behind the piston. As the power rotor continues to rotate, the working chamber passes into communication with an exhaust port preparator to another power stroke. A vacuum relief port is provided at an intermediate location which relieves any vacuum condition which develops behind the piston during part throttle operating conditions of the engine. A pressure balancing groove is located on a face of the power rotor and pressurized with working fluid to balance the pressure acting on the power rotor by the location of the intake port on the opposite face of the power rotor. An absorber chamber is provided downstream of the throttle valve and upstream of the intake port to smooth out the pressure forces created by intermittent flow of fluid through the intake port. An elliptical port throttle valve design is disclosed which minimizes the wire drawing effect of the working fluid acting on the valve member during operation of the valve. A special rotor sealing surface treatment is disclosed comprising a series of slight depressions or holes formed in the mating faces of the power rotor and which generate a sealing due to condensation of the escaping steam in the surface indentations. Two and three rotor versions of the engine are described as well as one, two, and four power stroke per revolution embodiments.

摘要翻译： 公开了一种外部燃烧发动机，其包括可旋转地支撑的两个或更多个圆形转子，其中一个转子用作动力转子并与另一个密封转子切向接触。 动力转子形成有径向突出的活塞，该活塞通过与密封转子相对应的圆周位置的配合凹槽。 蒸汽或其他工作流体经由位于动力转子的一个面的进气口进入，以通过由活塞后面的空间限定的工作室中的流体膨胀来引起动力转子的旋转。 当动力转子继续旋转时，工作室与排气口准备器连通进行另一个动力冲程。 在中间位置处提供真空释放口，其在发动机的部分节流操作条件期间减轻在活塞后方产生的任何真空状况。 压力平衡槽位于动力转子的表面上并用工作流体加压，以通过进气口在动力转子的相对面上的位置平衡作用在动力转子上的压力。 在节流阀的下游和进气口的上游设有吸收室，以平滑通过进气口间歇性流动的压力。 公开了一种椭圆形端口节流阀设计，其最小化在阀的操作期间作用在阀构件上的工作流体的拉丝效果。 公开了一种特殊的转子密封表面处理，其包括形成在动力转子的配合面中的一系列轻微的凹陷或孔，并且由于表面凹陷中的逸出蒸汽的冷凝而产生密封。 描述了发动机的两个和三个转子形式以及每转一个实施例的一个，两个和四个动力冲程。