Patent application number | Description | Published |
20090171507 | GASKET TYPE ORIFICE AND PRESSURE TYPE FLOW RATE CONTROL APPARATUS FOR WHICH THE ORIFICE IS EMPLOYED - An orifice changeable pressure type flow rate control apparatus comprises a valve body of a control valve for a pressure type flow rate control apparatus installed between an inlet side fitting block provided with a coupling part of a fluid supply pipe and an outlet side fitting block provided with a coupling part of a fluid takeout pipe; a fluid inlet side of the valve body and the inlet side fitting block, and a fluid outlet side of the valve body and the outlet side fitting block are detachably and hermitically connected respectively so a flow passage for gases through the control valve is formed; and, a gasket type orifice for a pressure type flow rate control apparatus is removably inserted between a gasket type orifice insertion hole provided on the outlet side of the valve body and a gasket type orifice insertion hole of the outlet side fitting block. | 07-02-2009 |
20100139775 | FLOW RATE RANGE VARIABLE TYPE FLOW RATE CONTROL APPARATUS - A pressure type flow control device enabling a reduction in size and an installation cost by accurately controlling the flow of a fluid in a wide flow range. Specifically, the flow of the fluid flowing in an orifice ( | 06-10-2010 |
20110120566 | DISCONTINUOUS SWITCHING FLUID FLOW RATE CONTROL METHOD USING PRESSURE TYPE FLOW RATE CONTROL DEVICE - A fluid flow rate control method is provided that uses a flow rate range variable type pressure type flow rate control device provided with at least two or more parallel fluid passages disposed between the downstream side of a control valve of the control device and a fluid supply pipe passage, and orifices having different fluid flow rate characteristics are respectively interposed in parallel fluid passages to pass fluid in a first flow rate region through one orifice for flow rate control, and to pass fluid in a second flow rate region through at least another orifice for flow rate control. Flow rate characteristics of the respective orifices are selected so that a maximum controllable flow rate of fluid in the first flow rate region at low flow rate is smaller than 10% of a maximum controllable flow rate in the second flow rate region at high flow rate. | 05-26-2011 |
20110315905 | GASKET TYPE ORIFICE AND PRESSURE TYPE FLOW RATE CONTROL APPARATUS FOR WHICH THE ORIFICE IS EMPLOYED - A gasket type orifice includes a first orifice base having a through-type passage in a central area thereof, a second orifice base having in a central area thereof a through-type passage communicating with the passage of the first orifice base, and an orifice plate having an orifice hole formed in a central area thereof, wherein the orifice plate is mounted by insertion in an airtight manner between both orifice bases, and the gasket type orifice is installed in a fluid passage, in which the outer end faces of both orifice bases respectively serve as sealing faces, and an outer diameter of the second orifice base, located on the downstream side, is larger than an outer diameter of the first orifice base located on the upstream side, and an outer peripheral edge portion of an inner end face of the second orifice base serves as another sealing face. | 12-29-2011 |
20130220451 | FLOW RATE RANGE VARIABLE TYPE FLOW RATE CONTROL APPARATUS - A pressure type flow rate control apparatus is provided wherein flow rate of fluid passing through an orifice is computed as Qc=KP | 08-29-2013 |
20140299201 | GAS SUPPLYING APPARATUS - A gas supply line and gas supplying apparatus that facilitates maintenance and management of various types of devices. The supplying apparatus is formed with a supply line that is made up of a gas inlet-side block, a gas outlet-side block and a plurality of fluid control devices. The gas supplying apparatus is formed with at least two gas supply lines, the fluid control device of each gas supply line includes at least one flow controller, an inlet-side block of the flow controller on one gas supplying line is connected to an inlet-side block of the flow controller on the other gas supply line so as to oppose the inlet-side block, and an outlet-side block of one flow controller is connected to an outlet-side block of the other flow controller so as to oppose the gas outlet-side block. | 10-09-2014 |
20150160662 | FLOW RATE RANGE VARIABLE TYPE FLOW RATE CONTROL APPARATUS - A pressure type flow rate control apparatus is provided wherein flow rate of fluid passing through an orifice is computed as Qc=KP1 (where K is a proportionality constant) or as Qc=KP2 | 06-11-2015 |
20150234390 | INTEGRATED TYPE GAS SUPPLYING APPARATUS - A plurality of stacked and fixed gas supplying units U, each gas supplying unit U having at least four gas supply lines S is formed by opposingly combining and fixing two flow controllers | 08-20-2015 |