Fill Pump Activation for Spill-Free Fluid Extraction
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Solution Overview
Problem
Printing devices with continuous fluid systems face challenges in efficiently extracting remaining fluid from reservoirs at the end of a contract or when devices are to be returned, stored, or disposed of, due to potential spills and drying out, which can lead to blockages and unauthorized fluid use.
Innovation Solution
A fluid extraction system that includes a switch to prevent leakage by activating a fill pump to draw fluid back into the reservoir when the removable extraction reservoir is removed, ensuring secure and spill-free extraction and recycling of fluid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If fluid is extracted from the reservoir to a removable extraction reservoir, then fluid can be removed for recycling or disposal, but fluid may spill during extraction or after removal of the extraction reservoir
Solution Approach 1:
The system performs preliminary actions by activating the fill pump before the extraction reservoir is fully removed, and maintains pump activation until fluid flow is confirmed to stop. This preliminary and continuous action ensures that the fluid pathway is sealed and any remaining fluid is drawn back into the reservoir, preventing spills during the transition state when the extraction reservoir is detached.
Solution Approach 2:
The fill pump serves as an intermediary device between the reservoir and the extraction reservoir. By activating this intermediary pump, the system creates controlled fluid flow management that prevents uncontrolled spilling. The pump mediates the fluid transfer process, ensuring that fluid moves only when and where intended, and stops before the extraction reservoir is completely removed.
2Ease of operation
If the extraction reservoir is removed before extraction is complete, then device operation can be simplified, but fluid may continue to flow and spill
Solution Approach 1:
The system implements feedback control by continuously monitoring the fluid flow state after extraction reservoir removal. The fill pump remains activated and the system monitors whether fluid flow has ceased. This feedback mechanism allows the system to maintain simplified operation (pump stays on automatically) while detecting and responding to the completion of fluid transfer, preventing spills by knowing when flow has stopped.
Solution Approach 2:
The system provides self-service by automatically maintaining the fill pump activation state after extraction reservoir removal. Rather than requiring manual intervention to stop the pump or prevent spills, the system self-manages the fluid flow control, keeping the pump active until fluid flow naturally ceases, thereby preventing spills without additional user action.
3Quantity of substance
If fluid remains in the reservoir after contract end or device disposal, then fluid can be reused, but unauthorized use or waste may occur
Solution Approach 1:
The system enables both discarding and recovering of fluid through the removable extraction reservoir mechanism. Fluid can be completely extracted and removed from the device for proper disposal or authorized recycling. The extraction process ensures thorough fluid removal, allowing suppliers to recover valuable fluid assets while preventing unauthorized use by ensuring the fluid is either retained under control or properly disposed of through the controlled extraction process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively prevents fluid spillage and allows for the reuse of extracted ink, reducing waste and financial exposure for suppliers, while maintaining fluid integrity and enabling recyclability of printing devices.
Implementation Method 1
A fill pump draws fluid to the reservoir
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
In one example in accordance with the present disclosure, a fluid extraction system is described. The fluid extraction system includes an interface to fluidically and electrically couple a removable extraction reservoir to a printing device. A supply line of the fluid extraction system transports fluid from the interface to a reservoir of the printing device. A return line of the fluid extraction system is coupled to the reservoir and supply line and transports fluid from the reservoir to the interface. The fluid extraction system also includes a switch to, responsive to removal of the removable extraction reservoir from the printing device, activate a fill pump to draw fluid through the supply line away from the interface.