Spring-Driven Pump for Discrete Liquid Bursts

The pump employs periodic action by using an actuator that reciprocates the plunger back and forth to create discrete bursts of liquid. The plunger moves forward to dispense liquid and returns rearward to refill, creating periodic bursts rather than continuous flow. This periodic reciprocating motion reduces power consumption compared to continuous pump operation while still achieving the desired discrete burst effect.

The invention extracts only the necessary portion of liquid for each burst by using a plunger that moves a limited distance to dispense a specific volume. The one-way valves ensure liquid is drawn in during the return stroke and only discharged during the forward stroke, extracting exactly the needed amount for each burst without the excessive power consumption of re-circulating systems.

The pump transitions from static constant flow to dynamic pulsating flow by using a reciprocating plunger mechanism. The plunger's back-and-forth motion dynamically varies the flow rate, creating discrete bursts at high pressure during the forward stroke while stopping flow during the return stroke. This dynamic operation maintains required pressure (8-10 bar) while producing separate bursts rather than constant flow.

The continuous flow is segmented into discrete bursts by dividing the pump cycle into distinct phases: a forward stroke that dispenses liquid in a burst, followed by a return stroke that refills the chamber. The one-way valves segment the flow path to ensure liquid only moves forward during the discharge phase, creating separated bursts rather than continuous flow while maintaining high pressure.

The pump assembly serves multiple functions within a single integrated unit: it generates high pressure, creates discrete bursts, controls flow direction through one-way valves, and enables efficient cleaning. The plunger mechanism simultaneously acts as both a pressure generator and a flow controller, while the spring provides both propulsion and reset functions, reducing overall device complexity despite the multiple capabilities required for effective hand-held cleaning.

The spring acts as an intermediary element that simplifies the pump design by providing mechanical energy storage and release. Instead of requiring a complex motor control system to achieve reciprocating motion, the spring mediates between the actuator and plunger, storing energy during the return stroke and releasing it during the forward stroke to create discrete bursts. This intermediary spring mechanism reduces control complexity while maintaining cleaning efficiency.