公开(公告)号：US20020187050A1

公开(公告)日：2002-12-12

申请号：US09877146

申请日：2001-06-11

Applicant: Bristol Compressors, Inc.

Inventor： John K. Narney II ,  David T. Monk ,  Joseph F. Loprete

IPC: F04B049/00 ,  F04B001/00

CPC classification number: F04C28/16

Abstract: A compressor with a capacity modulation system includes a compression chamber, a rotatable shaft within the compression chamber, and a roller mounted on the shaft in contact with a wall of the compression chamber. A suction channel is in fluid communication with the compression chamber for providing fluid at a suction pressure and a discharge channel is in fluid communication with the compression chamber for removing fluid at a discharge pressure. A re-expansion channel adjacent to the compression chamber has a first end forming a re-expansion port in the wall of the compression chamber. A re-expansion chamber is connected to the re-expansion channel. A valve disposed in the re-expansion channel is movable between a first position, in which the valve allows fluid communication between the compression chamber and the re-expansion chamber, and a second position, in which the valve prevents fluid communication between the compression chamber and the re-expansion chamber. The compressor operates in a reduced capacity mode with the valve in the first position, and in a full capacity mode with the valve in the second position. In one embodiment, the valve operates in response to a parameter internal to the compressor, such as fluid pressure. In another embodiment, the valve operates in response to a parameter internal or external to the compressor, such as temperature or fluid pressure. A further embodiment utilizes multiple re-expansion chambers to achieve varying levels of capacity reduction.

Abstract translation: 具有容量调节系统的压缩机包括压缩室，压缩室内的可旋转轴，以及安装在与压缩室壁相接触的轴上的辊。 抽吸通道与压缩室流体连通，用于在吸入压力下提供流体，并且排出通道与压缩室流体连通，以在排出压力下移除流体。 与压缩室相邻的再膨胀通道具有在压缩室的壁中形成再膨胀口的第一端。 再膨胀室连接到再膨胀通道。 设置在再膨胀通道中的阀可以在阀允许压缩室和再膨胀室之间的流体连通的第一位置和第二位置之间移动，在第二位置，阀阻止压缩室 和再膨胀室。 压缩机在阀处于第一位置时以减小容量模式运行，并且在阀处于第二位置的全容量模式下运行。 在一个实施例中，阀响应于压缩机内部的参数（例如流体压力）而操作。 在另一个实施例中，阀响应于压缩机内部或外部的参数（例如温度或流体压力）而操作。 另一实施例利用多个再膨胀室来实现不同程度的容量降低。

公开(公告)号：US20020170301A1

公开(公告)日：2002-11-21

申请号：US10140946

申请日：2002-05-09

Applicant: Bristol Compressors, Inc.

Inventor： Joseph F. Loprete ,  Michael R. Young ,  John W. Tolbert JR. ,  David T. Monk ,  Philip C. Wagner ,  Joe T. Hill ,  Larry Pippin ,  Robert B. Peters

IPC: F25B007/00 ,  F25B013/00

CPC classification number: F25B1/10 ,  F04B39/0005 ,  F04B39/0094 ,  F04B39/0246 ,  F04B49/06 ,  F04B49/126 ,  F04B2201/0206 ,  F04B2205/15 ,  F25B2400/074 ,  G11C16/08

Abstract: A two stage reciprocating compressor and associated HVAC systems and methods are disclosed. The reciprocating compressor includes a crankshaft having an eccentric crankpin, a reversible motor for rotating the crankshaft in a forward and a reverse direction, and an eccentric, two position cam rotatably mounted over the crankpin. The crankshaft and cam combine to cause the piston to have a first stroke when the motor operates in the forward direction and a second stroke when the motor operates in the reverse direction. The cam and crankpin also include stabilization means to restrict the relative rotation of the cam about the crankpin. A lubrication system is provided to lubricate the engaging surfaces of the crankshaft and cam and between the cam and the bearing surface of the connecting rod. There is also provided a control for selectively operating the motor either in the forward direction at a first power load or in the reverse direction at a reduced second power load. A protector for the motor is also provided. In addition, the application of the reciprocating compressor to both air conditioning and heat pump systems is disclosed.

Abstract translation: 公开了两级往复式压缩机和相关的HVAC系统和方法。 往复式压缩机包括具有偏心曲柄销的曲轴，用于使曲轴向前和向后旋转的可逆电动机和可旋转地安装在曲柄销上的偏心的两位置凸轮。 当电动机在正向工作时，曲轴和凸轮组合以使活塞具有第一冲程，并且当电动机沿相反方向工作时，该活塞具有第一冲程。 凸轮和曲柄销还包括限制凸轮围绕曲柄销的相对旋转的稳定装置。 提供润滑系统以润滑曲轴和凸轮的接合表面以及凸轮与连杆的支承表面之间。 还提供了一种用于在减小的第二功率负载下在第一功率负载或反向的方向上选择性地操作电动机的控制。 还提供电机保护器。 此外，公开了往复式压缩机对空调和热泵系统的应用。