초록 ▼

A method and system for controlling the rate of fluid flow. A flow restrictor having known pressure drop and flow rate characteristics provided in a passage through which the fluid, preferably a gas, flows. An upstream pressure sensor determines the pressure of fluid in the flow passage upstream of

A method and system for controlling the rate of fluid flow. A flow restrictor having known pressure drop and flow rate characteristics provided in a passage through which the fluid, preferably a gas, flows. An upstream pressure sensor determines the pressure of fluid in the flow passage upstream of the flow restrictor. A downstream pressure sensor determines the pressure of fluid in the flow passage downstream of said flow restrictor. A pressure regulator adjusts the pressure of fluid upstream or downstream of the flow restrictor based on the pressure drop across the flow restrictor so that the actual pressure drop across the flow restrictor closely corresponds to the pressure drop associated with a desired rate of fluid flow.

대표청구항 ▼

1. The method of controlling flow including:providing a flow restrictor comprising a three-dimensional porous structure defining a through-flow matrix having a plurality of pores and having known pressure drop-flow rate characteristics; determining a desired rate of fluid flow through the flow restr

1. The method of controlling flow including:providing a flow restrictor comprising a three-dimensional porous structure defining a through-flow matrix having a plurality of pores and having known pressure drop-flow rate characteristics; determining a desired rate of fluid flow through the flow restrictor; causing fluid to flow through the flow restrictor; determining the pressure drop across the flow restrictor of the fluid flowing therethrough; and adjusting the pressure drop across the flow restrictor of the fluid flowing through the flow restrictor such that the pressure drop of fluid across the flow restrictor corresponds to the desired rate of fluid flow.