Fluid diverting assembly

A fluid diverting assembly comprising:

• a plate-like sheet of rigid material having an aperture therein forming a nozzle for issuing a main stream of fluid as the fluid passes therethrough, said sheet of material having a relatively small dimension in the direction of the thickness thereof as compared with the width of the nozzle in the direction at right angles to the direction of flow of the fluid therethrough, the edges of said sheet of material around said aperture forming said nozzle having a shape for causing the fluid from upstream of said nozzle to flow therethrough in a main stream which is substantially unconstricted and having low inertia so that the direction of flow can be diverted easily;
• control chamber means positioned downstream of said nozzle and in spaced relation to said nozzle for developing a pressure differential in the main stream of fluid flowing from said nozzle;
• a pair of spaced opposed walls at a position downstream of said control chamber means and having a shape diverging away from each other in a direction downstream with respect to the direction of flow of the main stream of fluid and opening outwardly in a direction away from said nozzle, said walls being spaced from each other at the upstream side a distance slightly greater than the width of the nozzle for providing space for the main stream of fluid passing through the nozzle to be deflected;
• and said control chamber means having respective openings opening into the path of the main stream of fluid between said nozzle and said wall and having respective control openings opening into said chamber means having a cross-sectional area of a size sufficient for compensating for the reduction in pressure within the corresponding control chamber means due to the fluid within such control chamber means having been drawn into the main stream of fluid as the main stream of fluid flows past the openings opening into the path of the main stream.