公开(公告)号：WO9937920A3

公开(公告)日：2000-12-28

申请号：PCT/US9901612

申请日：1999-01-26

Applicant: BRISTOL COMPRESSORS

Inventor： MONK DAVID T ,  HILL JOE T ,  WAGNER PHILLIP C ,  LOPRETE JOSEPH F ,  YOUNG MICHAEL R ,  SINGLETARY CHARLES A

IPC: F04B39/00 ,  F04B49/12 ,  F04B49/06

CPC classification number: F04B49/126 ,  F04B39/0094 ,  F04B2201/0206

Abstract: A two-stage reciprocating compressor is provided. The compressor includes a reversible motor that rotates a crankshaft. The crankshaft is connected to a piston by a mechanical system. The mechanical system drives the piston at a full stroke between a bottom position and a top dead center position when the motor is operated in a forward direction. The mechanical system drives the piston at a reduced stroke between an intermediate position and the top dead center position when the motor is operated in the reverse direction. The compressor also includes a control for selectively operating the motor in either the forward direction at a first preselected, fixed speed or in the reverse direction at a second preselected fixed speed.

Abstract translation: 提供了两级往复式压缩机。 压缩机包括使曲轴旋转的可逆电动机。 曲轴通过机械系统连接到活塞。 当马达向前运动时，机械系统在底部位置和上止点位置之间的整个行程上驱动活塞。 当电动机沿相反方向操作时，机械系统以中间位置和上止点位置之间的行程减小地驱动活塞。 该压缩机还包括用于以第一预选，固定速度或反方向以第二预定固定速度在向前方向上有选择地操作马达的控制器。

公开(公告)号：AU2471299A

公开(公告)日：1999-08-09

申请号：AU2471299

申请日：1999-01-26

Applicant: BRISTOL COMPRESSORS

Inventor： MONK DAVID T ,  HILL JOE T ,  WAGNER PHILLIP C ,  LOPRETE JOSEPH F ,  YOUNG MICHAEL R ,  SINGLETARY CHARLES A

IPC: F04B39/00 ,  F04B49/12

Abstract: For a refrigerant compressor having two capacities, a camming structure operable in different manners depending on direction of crankshaft rotation, to achieve each capacity while providing top dead center piston operation thru the use of a circular cam bushing which is eccentrically, rotatably mounted on the crankshaft eccentric and within the connecting rod bearing wherein the combined eccentricities of the bushing and the eccentric equal the primary stroke of the piston. A first stop mechanism is provided for stabilizing the bushing on the eccentric upon rotation of the crankshaft in one direction whereby the eccentricities of the eccentric and bushing become aligned and remain so during synchronous rotational orbiting motion of the eccentric and bushing during rotation of the crankshaft for producing full stroke and full capacity. A second stop mechanism is provided for stabilizing the bushing within the bearing upon opposite rotation of the crankshaft whereby the bushing eccentricity becomes and remains substantially aligned with the connecting rod stroke axis while the eccentric moves alone thru its rotational orbit for producing reduced stroke and reduced capacity. A unique electrical control system is also provided for a reversible electric induction motor for selectively and efficiently driving the compressor crankshaft in either direction for providing the different capacities.

公开(公告)号：BR9907750A

公开(公告)日：2001-09-04

申请号：BR9907750

申请日：1999-01-26

Applicant: BRISTOL COMPRESSORS

Inventor： MONK DAVID T ,  HILL JOE T ,  WAGNER PHILLIP C ,  LOPRETE JOSEPH F ,  YOUNG MICHAEL R ,  SINGLETARY CHARLES A

IPC: F04B39/00 ,  F04B49/12

Abstract: For a refrigerant compressor having two capacities, a camming structure operable in different manners depending on direction of crankshaft rotation, to achieve each capacity while providing top dead center piston operation thru the use of a circular cam bushing which is eccentrically, rotatably mounted on the crankshaft eccentric and within the connecting rod bearing wherein the combined eccentricities of the bushing and the eccentric equal the primary stroke of the piston. A first stop mechanism is provided for stabilizing the bushing on the eccentric upon rotation of the crankshaft in one direction whereby the eccentricities of the eccentric and bushing become aligned and remain so during synchronous rotational orbiting motion of the eccentric and bushing during rotation of the crankshaft for producing full stroke and full capacity. A second stop mechanism is provided for stabilizing the bushing within the bearing upon opposite rotation of the crankshaft whereby the bushing eccentricity becomes and remains substantially aligned with the connecting rod stroke axis while the eccentric moves alone thru its rotational orbit for producing reduced stroke and reduced capacity. A unique electrical control system is also provided for a reversible electric induction motor for selectively and efficiently driving the compressor crankshaft in either direction for providing the different capacities.