公开(公告)号：US06305414B1

公开(公告)日：2001-10-23

申请号：US09724209

申请日：2000-11-28

申请人： Richard C. Kozinski

发明人： Richard C. Kozinski

IPC分类号： F16K31122

CPC分类号： F25B41/062 ,  F25B43/006 ,  F25B2341/063 ,  Y10T137/7784 ,  Y10T137/7792

摘要： A refrigerant flow metering device for use in a refrigeration system which uses a movable piston with a fixed flow passage in series with a variable area flow passage. The variable flow area is defined by the position of the piston relative to the valve body. The position of the movable piston is a function of refrigerant pressure differential across the piston and the force of a spring member acting in an opposite direction on the piston. In one embodiment, the variable flow area is defined as the clearance between a tapered fixed housing and a tapered portion of the movable piston. In an alternative embodiment, the metering device includes a two-piece piston having a re-open feature that increases the inlet orifice diameter of the piston.

摘要翻译： 一种用于制冷系统的制冷剂流量计量装置，其使用具有与可变区域流动通道串联的固定流动通道的可移动活塞。 可变流动面积由活塞相对于阀体的位置限定。 可移动活塞的位置是跨越活塞的制冷剂压力差和沿与活塞相反方向作用的弹簧件的力的函数。 在一个实施例中，可变流动面积被定义为锥形固定壳体与可移动活塞的锥形部分之间的间隙。 在替代实施例中，计量装置包括具有增加活塞的入口孔直径的重新开启特征的两件式活塞。

公开(公告)号：US06257837B1

公开(公告)日：2001-07-10

申请号：US09293573

申请日：1999-04-16

申请人： Terry Adams ,  Roger Cook ,  Stephen Eaton

发明人： Terry Adams ,  Roger Cook ,  Stephen Eaton

IPC分类号： F16K31122

CPC分类号： F04C29/0014

摘要： A variable oil flow regulator for minimizing noise generated typically by an oil-injected rotary screw compressor when the compressor transitions from an on-load mode for compressing fluid to an off-load mode. The regulator includes a housing having a first end, a second end and a chamber formed therein extending between the first and second ends. The regulator also includes a first port formed at the first end of the housing for admitting a pressure signal into the chamber corresponding to a compression level of the fluid, a second port formed at the second end of the housing for admitting the oil into the chamber, and a third port formed in the housing between the first and second ends of the housing for discharging the oil admitted into the chamber through the second port. The regulator further comprises a piston slidably disposed in the chamber between the first and second ends of the housing, the piston having a first end in fluid communication with the pressure signal and a second end in fluid communication with the oil. The piston is movable into a first position for allowing unrestricted flow of the oil between the second and third ports when the compressor is in the on-load mode and into a second position for restricting flow of the oil between the second and third ports when the compressor is in the off-load mode, the position of the piston being dependent upon the pressure differential between the pressure signal and the oil.

摘要翻译： 一种可变油流量调节器，用于在压缩机从用于压缩流体的负载模式转换到脱离负载模式时，最小化通常由注油旋转螺杆式压缩机产生的噪音。 调节器包括具有第一端，第二端和形成在其中的在第一和第二端之间延伸的室的壳体。 调节器还包括形成在壳体的第一端处的第一端口，用于允许对应于流体的压缩水平的压力信号进入腔室;形成在壳体的第二端处的第二端口，用于将油进入腔室 以及形成在所述壳体的所述壳体的第一和第二端之间的第三端口，用于通过所述第二端口排出进入所述室的油。 所述调节器还包括活塞，其可滑动地设置在所述腔室中的所述壳体的第一和第二端之间，所述活塞具有与所述压力信号流体连通的第一端和与所述油流体连通的第二端。 当压缩机处于负载模式时，活塞可移动到第一位置，以允许在第二和第三端口之间的油的不受限制的流动，并且当第二和第三端口之间的油流在第二和第三端口时， 压缩机处于卸载模式，活塞的位置取决于压力信号和油之间的压力差。

公开(公告)号：US06217080B1

公开(公告)日：2001-04-17

申请号：US09207147

申请日：1998-12-08

申请人： Hiroshi Imai

发明人： Hiroshi Imai

IPC分类号： F16K31122

CPC分类号： F16L37/28 ,  Y10S285/92 ,  Y10T137/87973

摘要： In the coupling assembly, after a plug member 42 is slightly inserted into a socket member 15 with a slight push of the plug member 42 relative to the socket member 15, air pressure enables the plug member 42 to reach its innermost position inside the socket member 15 so that the plug member 42 is connected with the socket member 15. The coupling assembly comprises: the socket member 15 for receiving therein a valve 16 which is opened when pushed; and, a cylindrical slider 25 for slidably receiving therein the socket member 15. The slider 25 is provided with a piston 28 and an engaging means 34 in its rear and its forward end portion, respectively. Through the engaging means 34, a plug member 42 is connected with the forward end portion of the slider 25. The slider 25 is capable of moving relative to the socket member 15 when air is forced in one side of the piston 28 while discharged out of the other side of the piston 28, so that the plug member 42 is permitted to reach its innermost position inside the socket member 15 when the slider 25 is moved.

摘要翻译： 在联接组件中，在插头构件42相对于插座构件15稍微推动稍稍插入插座构件15中之后，空气压力使插头构件42能够到达插座构件内部的最内部位置 插头构件42与插座构件15连接。联接组件包括：插座构件15，用于在其中容纳推压时打开的阀16; 以及用于可滑动地容纳在其中的插座构件15的圆柱形滑块25.滑块25分别在其后部和前端部设置有活塞28和接合装置34。 通过接合装置34，插头构件42与滑块25的前端部分连接。当空气在活塞28的一侧被迫时，滑块25能够相对于插座构件15移动，同时排出 活塞28的另一侧，使得当滑块25移动时，插头构件42被允许到达其位于插座构件15内部的最内部位置。

公开(公告)号：US06189856B1

公开(公告)日：2001-02-20

申请号：US09147493

申请日：1999-03-10

申请人： John Bowman

发明人： John Bowman

IPC分类号： F16K31122

CPC分类号： F16K31/122 ,  F16K47/00

摘要： A pressure release valve for a steam peeler for potatoes has a differential piston assembly including a piston which is movable between an open position and a closed position under steam control, and a fixed piston element which is received in a secondary cylinder within the main piston for defining a chamber that progressively reduces in volume as the main piston moves towards its open position. The chamber receives a cushioning fluid for decelerating the piston as it moves towards the open position.

摘要翻译： 一种用于马铃薯蒸汽剥皮机的压力释放阀具有差动活塞组件，其包括可在蒸汽控制下在打开位置和关闭位置之间移动的活塞;以及固定活塞元件，其被容纳在主活塞内的次级缸中 限定当主活塞向其打开位置移动时体积逐渐减小的室。 该室接收缓冲流体，用于当活塞向打开位置运动时使活塞减速。