| 摘要 |
Beer brewing pre-masher comprising an inlet opening (9) with a turbulence generator (15), is new. Beer brewing pre-masher comprises an inlet opening (9) with a turbulence generator (15) at the periphery of the grist or crushed malt flow. The turbulence generator (15) directs the mash water with a tangential component relative to the grist flow circumference. A first guide surface of the inlet opening extends into the grist flow, deflecting the mash water with a tangential component. This lies on a notionally-spiral, and optionally-conical, surface about the center (3a) of the casing extending in the direction of grist flow. A second guide surface (8) at the inlet, deflects the mash water with a radial component, relative to the center (3a). The width (D6) of the descender upstream of the inlet opening (9) is greater than the downstream width (D7), and the second guide surface makes a transition between diameters. A mixing section (7) with baffles turning and mixing the flow, lies downstream of the inlet opening, its length being twice its internal diameter. The inlet opening is a nozzle accelerating the mean mash velocity to 2 m/s. A bluff body baffle (13) for the grist flow is located centrally in the inlet opening.
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