Abstract: The present invention relates to an improved ultrasonic cleaning system incorporating one or more improvements including, for example, permanently-attached flexible cables, waterproof bulkhead connectors provided on the transducers, submersible breakout assemblies, rigid cable guides and retainers, and at least one electronic switching unit whereby multiple ultrasonic transducers can be selectively driven by a single ultrasonic generator. The improved ultrasonic cleaning system may be configured with various transducer arrangements including, for example, elongated transducers provided on a carrying frame or structure and a more planar array configuration that may be assembled from a plurality of transducer subassemblies.

Abstract: A passive assembly for operating two cleaning chambers using a single filtration system having a flow diverter assembly is disclosed. The flow diverter assembly is actuated by a fuel assembly when a fuel assembly is inserted into the cleaning chamber. The flow diverter assembly acts so that each cleaning chamber is supplied with suction flow whenever there is a fuel assembly in the cleaning chamber. When a cleaning chamber is empty, the flow diverter acts to block the suction flow from the filtration system, forcing suction flow through the opposite cleaning chamber. The flow diverter only provides suction head to a cleaning chamber when there is a fuel assembly in the cleaning chamber. When both cleaning chambers are empty, suction pressure from the pump increases to the point that the flow diverters in both chambers open sufficiently to maintain flow through the pumps and prevent the pumps from cavitating.