| 摘要 |
<p>A VORTEX FLOW CONTROL DEVICE A method of manufacturing a vortex flow control device is described. The vortex flow control device comprises a housing defining a vortex chamber, the housing comprising oppositely disposed end walls (4, 6) and an outer wall (8) extending about an axis (X) and disposed between the end walls, an outlet (5) from the housing being disposed in one of the end walls, and an inlet (30) to the housing being disposed in the outer wall and configured so that fluid entering the vortex chamber through the inlet induces a circulating flow within the vortex chamber about the axis, the inlet (30) being defined between an upstream edge (22) and a downstream edge (32) of the outer wall with respect to the direction of the circulating flow in the region of the inlet, the upstream edge being an edge of a terminal portion of the outer wall. The method comprises the steps of: (a) manufacturing a template unit (2) comprising the end walls and a partial outer wall excluding the terminal portion; and (b) subsequently securing the terminal portion of the outer wall to the template unit.</p> |
