Outlet scroll

The centrifugal fan has an inlet on the axis of rotation and outlet from a scroll casing 90° from the inlet. The centrifugal fan is not reversible. The characteristics of the fan are determined by blade shape, i.e. ... 

A scroll vacuum pump uses two interleaved Archimedean spiral-shaped scrolls to pump or compress gases (see Fig. 1.9). One of the scrolls is fixed, while the other orbits eccentrically without rotating, thereby trapping and compressing gases between the scrolls and moving it towards the outlet. 

The scroll rotates slower than the bowl at a differential speed of 1/20 to 1/160 of the bowl speed this differential speed causes translation of the solids along the bowl. Particularly, soft solids can be conveyed with low conveyor differential speeds should higher differential speeds cause resuspensions. Units will have g forces up to 6000 and range in diameter from 6" to The solids discharge outlet is usually smaller than the liquid... 

In the Inlet, scroll down to select Feed and Outlet in the Outlet as shown in Figure 3-... 

Pressure-recovery type vortex tubes, along with pressure-recovery type diffusers set atop the roof of the cyclone, are occasionally used to convert some of the rotational energy of the exiting gas back into static pressure. Based on data presented by Muschelknautz and Bruimer (1967), a modest amount of pressure recovery (15 to 20% reduction in vortex core pressure loss) can be achieved with a simple conically shaped vortex tube, such as that shown in frame g. More efficient recovery (35 to 40% loss reduction) is possible with a well-designed internal conical insert, such as that shown in frame h. Normally, such a vortex tube is directly connected to a wide-bodied outlet diffuser or exit scroll which sits atop the cyclone roof. 

Collector Scroll Radial housing that is connected to the diffuser that collects the fluid to near static conditions and transfers this flow to the compressor outlet duct... 

---