Liquid Jet Discharge Device Using Pressure Wave and Staggered Interface
Solution Overview
Problem
Existing liquid jet discharge devices have low velocity increase ratios and struggle to generate liquid jets using high viscosity liquids.
Innovation Solution
A liquid jet discharge device with a narrow tube open at both ends, where the discharge liquid contacts the inner face at a contact angle less than 90 degrees, featuring a container with a transmission medium and an adjustment mechanism to stagger the liquid surface and interface positions, and a generation mechanism that creates a pressure wave to discharge a thin liquid jet from the narrow tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional ink jet extrusion methods are used, then liquid can be discharged from discharge holes, but the discharged liquid droplet diameter is limited to the diameter of the discharge holes or greater, causing blocking problems
Solution Approach 1:
The patent replaces traditional mechanical extrusion methods with a pressure wave generation mechanism. By generating pressure waves in the transmission medium that contact the liquid surface, the system achieves liquid jet discharge without mechanical contact, eliminating blocking issues while producing thinner jets than the discharge tube diameter
Solution Approach 2:
The patent introduces a transmission medium as an intermediary between the pressure wave generation mechanism and the discharge liquid. The pressure wave propagates through the transmission medium to act on the liquid surface, enabling indirect action that avoids direct mechanical contact and blocking problems
2Speed
If existing liquid jet discharge methods are used, then liquid jets can be discharged, but the velocity increase ratio is low (about two times), making it difficult to generate liquid jets using high viscosity liquids
Solution Approach 1:
The patent changes the physical parameters of the discharge system by using a transmission medium with different acoustic impedance characteristics than the discharge liquid. This parameter change enables more efficient pressure wave transmission and higher velocity increase ratios, allowing the system to handle high viscosity liquids that were previously difficult to jet
Solution Approach 2:
The patent employs periodic pressure wave generation to accelerate liquid jets. By generating pressure waves at optimized intervals and frequencies, the system achieves cumulative acceleration effects that significantly increase jet velocity, enabling the discharge of high viscosity liquids with velocity increase ratios much higher than traditional methods
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 a high velocity increase ratio for the liquid jet, enabling the discharge of even high viscosity liquids with a focused, long, thin jet, overcoming the limitations of traditional methods.
Implementation Method 1
a generation mechanism that generates a pressure wave in the transmission medium such that a liquid jet is discharged from the discharge liquid inside the narrow tube
Implementation Method 2
the transmission medium includes a transmission liquid that is disposed at least at an outside of the narrow tube and the bottom side inside the container; and a separator member that is disposed between the discharge liquid and the transmission liquid either inside the narrow tube or at an end portion of the narrow tube, so as to separate the transmission medium and the discharge liquid and to propagate a pressure wave from the transmission liquid to the discharge liquid
Implementation Method 3
the discharge liquid contacting at least at an inner face of the narrow tube at a contact angle of less than 90 degrees
Implementation Method 4
the discharge liquid contacts the inner face at a contact angle less than 90 degrees
Implementation Method 5
an adjustment mechanism that causes a liquid surface of the discharge liquid inside the narrow tube and an interface of the transmission medium outside the narrow tube and inside the container to be staggered in position along an axial direction of the narrow tube
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A liquid jet discharge device includes: a narrow tube having a tube shaped body that is open at both ends, and in which a discharge liquid being disposed therein, the discharge liquid contacting at least at an inner face of the narrow tube at a contact angle of less than 90 degrees; a container in which a transmission medium being disposed at a base side thereof where one end of the narrow tube is disposed, so as to enable pressure to be transmitted to the discharge liquid; an adjustment mechanism that causes a liquid surface of the discharge liquid inside the narrow tube and an interface of the transmission medium outside the narrow tube and inside the container to be staggered in position along an axial direction of the narrow tube; and a generation mechanism that generates a pressure wave in the transmission medium such that a liquid jet is discharged from the discharge liquid inside the narrow tube.