Liquid Ejection Device Pressure Chamber Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid ejection devices with a single pressure applying part for the piston in the cylinder face challenges in finely controlling both ejection and suction operations, limiting their operational precision.
Innovation Solution
A liquid ejection device with a liquid feeder featuring a liquid reservoir divided into multiple pressure chambers, where a displacement part changes volumes between these chambers, and a drive unit controlled by a controller to manage suction and ejection operations, providing multiple pressure applying parts for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single pressure applying part is used for the piston in the cylinder, then the device structure is simple, but it is difficult to finely control ejection and suction operations
Solution Approach 1:
The liquid reservoir is divided into multiple pressure chambers (first pressure chamber and second pressure chamber) separated by a displacement part. Each pressure chamber can be independently pressurized by the drive unit, enabling separate control of suction and ejection operations. This segmentation allows precise control of liquid flow in both directions without requiring complex additional components.
2Ease of operation
If multiple pressure chambers are introduced for precise control, then control precision is improved, but device complexity increases
Solution Approach 1:
Multiple pressure chambers are merged within a single integrated liquid reservoir structure. The drive unit serves all pressure chambers simultaneously, and the displacement part acts as a common boundary between chambers. This merging approach achieves precise control functionality while avoiding the complexity of multiple separate reservoirs or independent actuation systems.
Solution Approach 2:
The drive unit is designed to universally pressurize multiple pressure chambers through a single actuation mechanism. The displacement part serves multiple functions: separating pressure chambers, storing liquid, and being actuated by the drive unit. This multi-functionality reduces the number of separate components needed, maintaining structural simplicity while enabling precise control.
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
Enables precise control over ejection and suction operations, improving the device's ability to handle liquids with reduced waste and maintaining stable pressure, thus enhancing operational efficiency.
Implementation Method 1
a drive unit configured to displace the displacement part relative to the liquid reservoir by inputting and outputting a fluid into and out of at least one of the first and second pressure chambers
Data Source
AI summary
A liquid ejection device includes an ejector configured to eject a liquid in a continuous flow, form the continuous flow into droplets, and cause a collision with an object in a form of the droplets, a liquid feeder includes a liquid reservoir, a displacement part, and a drive unit, the displacement part is placed to increase a volume of the liquid reservoir chamber when displaced to increase a volume of the first pressure chamber relative to the volume of the liquid reservoir, and decrease the volume of the liquid reservoir chamber when displaced to increase a volume of the second pressure chamber relative to the volume of the liquid reservoir, the displacement part is displaced to increase the volume of the first pressure chamber at a suction operation, and the displacement part is displaced to increase the volume of the second pressure chamber at an ejection operation.