公开(公告)号：US5016790A

公开(公告)日：1991-05-21

申请号：US453078

申请日：1989-12-19

Applicant: John E. Thomas ,  Darrell Saby ,  Richard Mehus

Inventor： John E. Thomas ,  Darrell Saby ,  Richard Mehus

IPC: A47L15/44 ,  F16K21/10 ,  G01F13/00

CPC classification number: G01F13/006 ,  A47L15/44 ,  A47L15/4436 ,  F16K21/10

Abstract: An apparatus for dispensing a liquid detergent solution using a timing fluid is disclosed. A preferred cleaning system (10) includes a fluid-operated solvent metering apparatus (38). The metering apparatus (38) preferably includes a normally-closed valve (16) and a timing device (40). The timing device (40) preferably includes a cylinder (52) and a piston (54), wherein the piston (54) forms a pair of subchambers (56, 58) which are interconnected by a flow control device (68). The flow control device (68) serves to restrict the flow of a timing fluid from one subchamber (56) to the other subchamber (58) so as to hold the valve (16) in its open position for a period of timing following its initial manual opening. A return spring (48) in the normally closed valve (16) urges the valve (16) toward its closed position, and the spring (48) also acts against the piston (54) to cause the timing fluid to flow from the first subchamber (56 ) to the second subchamber (58). A water source 12 and a detergent source 14 are in fluid communication for the period of time that the valve (16) is held open.

Abstract translation: 公开了一种使用定时流体分配液体洗涤剂溶液的设备。 优选的清洁系统（10）包括流体操作的溶剂计量装置（38）。 计量装置（38）优选地包括常闭阀（16）和定时装置（40）。 定时装置（40）优选地包括气缸（52）和活塞（54），其中活塞（54）形成一对通过流量控制装置（68）互连的子室（56,58）。 流量控制装置（68）用于限制定时流体从一个子室（56）到另一个子室（58）的流动，以将阀门（16）保持在其打开位置，在其初始 手动打开。 常闭阀（16）中的复位弹簧（48）将阀（16）推向其关闭位置，并且弹簧（48）也作用在活塞（54）上，以使正时流体从第一子室 （56）连接到第二子室（58）。 水源12和洗涤剂源14在阀（16）保持打开的时间段内流体连通。