Metering device

摘要

The channel section (29) includes a recess (32) to hold the dosing components (31). The recess is circumferentially-bounded by the channel section, with the dosing component held in the recess. A further upstream channel section borders the fluid-holding section and there is at least one further channel downstream. These channel sections include a permanent connection (39). This is welded. The chamber defined by the channel sections, contains static mixer components (24). The static mixing component is constructed as part of a channel section (29, 33, 34). Preferably, the mixing component and channel section are an integral casting. Alternatively they are connected by welding, soldering or interference-fitting. The dosing component has an essentially circular inlet cross section. Alternatively it has longer and shorter sides with an aspect ration of at least 1.25. In a further variant, the inlet cross section is formed by sections of convex and/or concave edge curves, or straight line longitudinal side sections. The dosing component has a pore- or capillary structure. The cross section in a step parallel to the main axis of the dosing element is cylindrical, conical, cylindrical in sections and/or conical, with sectionally- varying diameters. The dosing component projects into the interior of the flow channel. Adjacent dosing components are spaced apart, the spacing preferably being from one to 1.5 times their minimal diameters. The proportion of the surface area of the channel sections (29, 30) taken up by dosing components is at most 20%, at a maximum operational pressure of 1000 bar.