Parallel Oscillating Piston Pump Phase Displacement

The patent applies periodic action by operating two oscillating piston pumps with a phase displacement of 180 degrees. Each pump operates on alternating half-waves of the AC supply (one pump on positive half-wave, the other on negative half-wave), creating complementary periodic cycles. This ensures that when one pump is in its discharge phase, the other is in its suction phase, and vice versa, thereby maintaining continuous and uniform flow output while preserving the benefits of parallel operation for increased productivity.

The patent inverts the conventional approach by not adding flow rectifiers downstream to correct pulsating flow, but rather by preventing the pulsating flow from occurring in the first place. This is achieved by operating the two pumps with 180-degree phase displacement, so their discharge cycles are complementary rather than simultaneous. The inversion transforms the problem from one requiring corrective downstream equipment to one solved by upstream operational configuration, thereby eliminating the need for expensive flow rectifiers while guaranteeing uniform flow rate.

The patent applies dynamics by transitioning from static simultaneous discharge operation to dynamic complementary discharge operation. The two pumps are operated with variable phase displacement of 180 degrees, allowing their discharge cycles to be dynamically coordinated. One pump discharges during the positive half-wave while the other discharges during the negative half-wave, creating a continuous dynamic flow pattern that maintains maximum productivity while ensuring smooth, non-pulsating flow suitable for industrial applications.