Liquid Discharging Head Segmentation for Rigidity and Efficiency
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Solution Overview
Problem
Existing liquid discharging technologies face challenges in increasing the amount of liquid discharged from a nozzle while maintaining discharge efficiency, as increasing the volume of the pressure chamber reduces its rigidity, leading to weakened pressure transmission and responsiveness.
Innovation Solution
A liquid discharging head design featuring a nozzle, pressure chambers, drive elements, and lead electrodes, where two pressure chambers communicate with a single nozzle, and lead electrodes are configured to overlap, allowing for efficient liquid discharge without increasing the pressure chamber volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the volume of the pressure chamber is increased to discharge a larger amount of liquid, then the discharge amount increases, but the rigidity of the pressure chamber is lowered
Solution Approach 1:
The pressure chamber is divided into multiple smaller pressure chambers (first pressure chamber and second pressure chamber) that communicate with a common nozzle. This segmentation allows the system to discharge larger amounts of liquid through multiple chambers simultaneously while each chamber maintains its rigidity, avoiding the rigidity loss that would occur if a single large chamber were used.
2Quantity of substance
If the volume of the pressure chamber is increased to discharge a larger amount of liquid, then the discharge amount increases, but the discharge efficiency is lowered
Solution Approach 1:
The pressure chamber is divided into multiple smaller pressure chambers (first pressure chamber and second pressure chamber) that communicate with a common nozzle. This segmentation allows the system to discharge larger amounts of liquid through multiple chambers simultaneously while each chamber maintains its rigidity, avoiding the rigidity loss that would occur if a single large chamber were used.
3Volume of stationary object
If the rigidity of the pressure chamber is lowered, then the volume can be increased, but the pressure transmission is weakened
Solution Approach 1:
The pressure chamber is divided into multiple smaller pressure chambers (first pressure chamber and second pressure chamber) that communicate with a common nozzle. This segmentation allows the system to discharge larger amounts of liquid through multiple chambers simultaneously while each chamber maintains its rigidity, avoiding the rigidity loss that would occur if a single large chamber were used.
4Volume of stationary object
If the rigidity of the pressure chamber is lowered, then the volume can be increased, but the pressure responsiveness is lowered
Solution Approach 1:
The pressure chamber is divided into multiple smaller pressure chambers (first pressure chamber and second pressure chamber) that communicate with a common nozzle. This segmentation allows the system to discharge larger amounts of liquid through multiple chambers simultaneously while each chamber maintains its rigidity, avoiding the rigidity loss that would occur if a single large chamber were used.
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
This configuration enables a higher volume of liquid to be discharged from the nozzle while maintaining or improving discharge efficiency, by optimizing the rigidity and responsiveness of the pressure chambers.
Implementation Method 1
a resonance frequency of a piezoelectric element and a pressure chamber is lowered
Data Source
AI summary
Provided is a liquid discharging head including: a nozzle discharging a liquid; a chamber plate having a plurality of pressure chambers, a drive element provided to correspond to each of the pressure chambers, and a plurality of lead electrodes for supplying an electric signal to the drive element; and a circuit substrate having a terminal coupled to the lead electrode. A first pressure chamber and a second pressure chamber communicate with the nozzle in common. The chamber plate includes a first individual lead electrode for the drive element corresponding to the first pressure chamber and a second individual lead electrode for the drive element corresponding to the second pressure chamber. The terminal of the circuit substrate is coupled so as to overlap the first individual lead electrode and the second individual lead electrode in plan view.