Covestro Intellectual Property Gmbh & Co. Kg

Andy Honour

Jan Suetterlin

Jeff Motley

Method for adjusting the volumetric flow ratio of at least two different fluids (F, F) with a control-device. The control-device comprises a first chamber with a chamber-volume (V) for the first fluid (F) and an inlet-element and an outlet-element for the first fluid (F) and at least one rotating or nutating element. The control-device further comprises at least one second chamber with a chamber-volume (V) for the second fluid (F), wherein the second chamber has an inlet-element and an outlet-element for the second fluid (F) and at least one rotating or nutating element. The rotating or nutating elements are coupled so as to rotate or nutate at a defined rotational or nutational frequency ratio and are driven by the fluids (F, F). The chamber volume ratio (V:V) and the rotational or nutational frequency ratio are selected such that the fluids (F, F) flowing out of the outlet-elements have a predefined volumetric flow ratio. The input resistor (R) of the respective inlet-element and the output resistor (R) of the respective outlet-element of the first chamber and/or the second chamber are chosen so as to satisfy the equation: (I), wherein ηis the viscosity of the respective fluid (F, F) and Cn designates the respective chamber.

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Amersham, United Kingdom

Andy Honour