Patent DE-102007039713-A1 (DE)
Title: Device for mixing multi-fluid or multi-phase mixtures, comprises mixing channel/channel system with multi openings and actuators, which affect on liquid in mixing- and transportation chamber directly in actuator regions of the chamber
Inventor: BERONOV KAMEN
IPC: B81B1/00
Filed: 2007-08-22
Abstract: The device for mixing multi-fluid or multi-phase mixtures, comprises mixing channel/channel system with multi openings, and actuators, which affect on liquid in mixing- and transportation chamber direct in actuator regions of the chamber. In the mixing- and transportation chamber, the channel wall form has asymmetrical resistive elements (52, 54) in relation to the channel center-axis. The dimension of the asymmetrical resistive elements is comparable with one of the channel cross section dimensions based on the magnitude. The actuator flow rates are produced with Reynolds number of 50-5000. The device for mixing multi-fluid or multi-phase mixtures, comprises mixing channel/channel system with multi openings, and actuators, which affect on liquid in mixing- and transportation chamber direct in actuator regions of this chamber. In the mixing- and transportation chamber, the channel wall form has asymmetrical resistive elements (52, 54) in relation to the channel center-axis. The dimension of the asymmetrical resistive elements is comparable with one of the channel cross section dimensions based on the magnitude. The actuator flow rates are produced with a Reynolds number of 50-5000. The Reynolds number is determined based on the maximum momentary flow rate and the cross-sectional dimension. A controlled time-periodic pressure curve in channel is produced, so that a large part of the material volume, which can be mixed more than once by a larger part of the mixing channel. Ten resistive elements are intended along the center-axis of the mixing channel. The height of the asymmetrical resistive elements in the section along the center channel axis is locally perpendicular to the channel wall of maximal 90% and minimal 5% of the channel diameter. The asymmetrical resistive elements are intended on two channel walls with polygonal channel cross section and on 20 % of the circumference with rounded cross section. A part of the asymmetrical resistive elements has a profile that has a nozzle effect through the reduction of the channel cross-section produced from it by flow rates in the operating region in one of the alignments of the mainstream along the center-axis of the mixing channel. The distance of the asymmetrical resistive elements in relation to the channel center-axis is a multiple of the height of the resistive elements and 1.5 times of the local height. The arrangement of the resistive elements is oppositely in pairs. A part of the resistive elements is uniform and the distance is not more than 5 % of the height of the resistive elements along the channel center-axis between corresponding characteristic points of the opposite resistive elements. The time period of the actuator drive is multiply longer than the time, which needs the fluid for passing a resistive element. The actuator drive is changeable in the amplitude, frequency and/or phase. The amplitude, frequency and/or phase of the actuator drive are independently adjustable for each range. Multi actuators are intended, whose drive is individually adjustable. The actuators operate in opposite phase with same frequency and are hydraulically connected together by connection channels with uneven wall form in area-wise manner. Mass transportation in or from the mixing channel takes place via an external pressure gradient or drive device. The actuator control system is intended so that a time-separate operating program of simultaneous pumping and mixing, and of mixing without pumps is possible.