公开(公告)号：US5816783A

公开(公告)日：1998-10-06

申请号：US842086

申请日：1997-04-28

申请人： Yasuhiro Oshima ,  Kenji Ogino ,  Hiromasa Uchida ,  Mitsuji Yamamoto ,  Kazuhiro Suzuki ,  Hiroyasu Owada

发明人： Yasuhiro Oshima ,  Kenji Ogino ,  Hiromasa Uchida ,  Mitsuji Yamamoto ,  Kazuhiro Suzuki ,  Hiroyasu Owada

IPC分类号： F01L25/04 ,  F04B39/00 ,  F04B17/00

CPC分类号： F01L25/04 ,  F04B39/0005 ,  F01L3/205 ,  Y10S417/902

摘要： An electrically driven hermetic compressor comprises a hermetic casing, an electric motor unit encased in the casing, and a compression mechanism encased by the casing and drivingly connected to the electric motor unit through a crankshaft. The compression mechanism includes a cylinder, a piston reciprocatingly slidable in the cylinder, a valve plate having formed therein a suction port and a discharge port and providing valve seats around the ports, suction valve and a discharge valve cooperating with the suction and discharge ports. The cylinder, the piston and the valve plate cooperate to define a compression chamber. The compressor further has a passage system providing separate passages for a gas to be compressed and the gas after compression, and a motion converting mechanism for converting rotary motion of the crankshaft into linear reciprocating motion of the piston. A frusto-conical projection is formed on the top of the piston at a point offset from the axis of the piston so as to be receivable in the discharge port which also is offset from the axis of the piston, thus minimizing dead volume when the piston has reached its top dead center of its stroke.

摘要翻译： 一种电动密闭式压缩机，包括密封壳体，封装在壳体中的电动机单元和由壳体包围并通过曲轴驱动连接到电动机单元的压缩机构。 压缩机构包括：气缸，能够在气缸中往复滑动的活塞，形成有吸入口和排出口的阀板，并且在端口周围设置阀座，吸入阀和与吸入口和排出口配合的排出阀。 气缸，活塞和阀板协作以限定压缩室。 压缩机还具有通道系统，用于为被压缩的气体和压缩后的气体提供分开的通道，以及用于将曲轴的旋转运动转换成活塞的直线往复运动的运动转换机构。 在活塞顶部形成一个截头圆锥形凸起，该活塞的顶部偏离活塞的轴线，以便能够接纳在也从活塞轴线偏离的排放口中，从而使活塞体积减小 已经达到了其中风的上死点。