Liquid delivery device and liquid spray device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid delivery devices face issues with unstable pressure due to pump mechanisms, leading to inconsistent liquid delivery, and nonpulsatile pumps are complex and costly, resulting in device size and cost increases.
Innovation Solution
A liquid delivery device with a cylinder, piston, gas container, regulator, and three-way valve configuration that maintains constant gas pressure to stabilize liquid delivery, featuring a simple and compact design without requiring a power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a pump mechanism is used to deliver liquid, then liquid delivery is achieved, but pressure becomes unstable and device complexity increases
Solution Approach 1:
The patent uses a gas-filled bladder (pneumatic element) within the liquid delivery device to maintain stable pressure. The gas bladder expands and contracts to compensate for liquid flow variations, providing consistent delivery pressure without requiring a complex pump mechanism. This pneumatic approach resolves the contradiction by achieving reliable pressure stability through gas-liquid interaction rather than mechanical pumping.
Solution Approach 2:
The gas bladder acts as an intermediary between the liquid supply and the delivery system. It absorbs pressure fluctuations and provides a buffering effect, mediating between variable liquid input and the need for stable delivery pressure. This intermediary element enables reliable liquid delivery without the complexity of active pump control systems.
2Reliability
If a nonpulsatile pump with triple pump and adjusting pump is used, then liquid delivery stability is improved, but device complexity and size increase
Solution Approach 1:
The patent replaces complex mechanical pump systems with a pneumatic solution using a gas-filled bladder. The gas compressibility provides inherent pulsation damping and flow stabilization without requiring multiple pumps or adjusting mechanisms. This single-bladder pneumatic system achieves the same stability function as complex multi-pump arrangements but with dramatically reduced complexity.
Solution Approach 2:
The gas bladder is a passive, self-regulating element that automatically compensates for pressure variations through its elastic properties. It requires no external control system, power supply, or adjustment mechanisms - the gas simply expands and contracts in response to liquid flow changes, providing self-service pressure stabilization without adding device complexity.
3Reliability
If a complex pump system is used to ensure stable liquid delivery, then delivery reliability is improved, but device size increases
Solution Approach 1:
The patent employs a compact gas-filled bladder that provides pressure stabilization within a minimal volume. The gas compressibility allows the bladder to absorb and release pressure in a compact form factor, eliminating the need for large mechanical pump assemblies. This pneumatic approach achieves reliable liquid delivery consistency while maintaining a small device footprint.
Solution Approach 2:
The patent changes the physical parameter of using compressible gas instead of incompressible liquid or mechanical components. This parameter change enables pressure stabilization through volume variation of the gas bladder, achieving reliable delivery with a much smaller device size compared to mechanical pump systems that require substantial clearance and mechanical clearance volumes.
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 device achieves stable and efficient liquid delivery with a compact design, ensuring consistent pressure and reducing the risk of size and cost increases, while allowing for easy liquid inflow and outflow.
Implementation Method 1
a gas container configured to encapsulate gas at pressure exceeding atmospheric pressure
Implementation Method 2
a regulator which is coupled to the gas container, and is configured to adjust pressure of the gas delivered from the gas container
Implementation Method 3
a piston configured to change a volume of the liquid retention section
Data Source
AI summary
A liquid delivery device includes a cylinder having a liquid retention section configured to retain a liquid, a piston configured to change a volume of the liquid retention section, a gas container configured to encapsulate a gas at pressure exceeding atmospheric pressure, a regulator which is coupled to the gas container, and is configured to adjust pressure of the gas delivered from the gas container, a gas flow channel having a supply flow channel configured to supply the gas delivered from the regulator to the piston, and a release-to-atmosphere flow channel configured to release the gas delivered from the regulator to an atmosphere, and a three-way valve provided to the gas flow channel to switch between delivering the gas delivered from the regulator to the supply flow channel and delivering the gas to the release-to-atmosphere flow channel.