Piezoelectric Fluid Pump Signal Layer Nesting
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Solution Overview
Problem
The existing fluid driving systems with piezoelectric elements face challenges in protecting the signal transmission layer, which is often externally located and prone to damage due to its multi-layer structure and large volume, affecting the overall system's reliability and precision.
Innovation Solution
The fluid driving system incorporates a signal transmission layer electrically connected to the piezoelectric element, which is formed inside the system, utilizing a vibration unit, a piezoelectric element, a plane unit, and a protrusion to reduce the number of central components and ensure better protection and precision, with the signal transmission layer being integrated between the vibration unit and the plane unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the signal transmission layer is located outside the pump body with a multi-layer structure, then the electrical connection to the piezoelectric element is achieved, but the overall volume is large and the structure is easily damaged
Solution Approach 1:
The signal transmission layer is integrated inside the pump body structure, nesting the electrical connection components within the existing mechanical housing rather than placing them externally. This reduces the overall volume while protecting the signal transmission layer from external damage.
Solution Approach 2:
The signal transmission layer is merged with the pump body structure, combining the electrical connection function with the mechanical housing. This integration eliminates the need for separate external circuit boards or wiring assemblies, reducing volume and improving protection.
2Reliability
If the signal transmission layer is located outside the pump body, then the electrical connection to the piezoelectric element is achieved, but the structure is easily damaged
Solution Approach 1:
The signal transmission layer is merged with the pump body structure, combining the electrical connection function with the mechanical housing. This integration simplifies the overall structure by eliminating separate external components and reducing the number of assembly steps.
3Ease of operation
If multiple components are located at the central zone of the fluid driving system, then the electrical connection and fluid control are achieved, but the tolerance and precision are affected
Solution Approach 1:
The protrusion is extracted from the central functional zone and repositioned to the peripheral area of the pump body. This extraction removes the interfering component from the critical central region, allowing for better manufacturing precision and tighter tolerances in the pump chamber and valve assembly.
Solution Approach 2:
The pump body is segmented into distinct functional zones: the central zone for precision fluid control components and the peripheral zone for the protrusion and other non-critical elements. This spatial segmentation allows each zone to be optimized for its specific function without compromising overall performance.
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 enhances the protection of the signal transmission layer, reduces the overall thickness of the system, and maintains high precision and small tolerance, improving the reliability and efficiency of the fluid driving mechanism.
Implementation Method 1
a piezoelectric pump is a new type of fluid driver, which does not require any additional driving motor and can deform a piezoelectric vibrator only by an inverse piezoelectric effect of piezoelectric ceramics
Data Source
AI summary
A fluid driving system includes a vibration unit, a piezoelectric element, a signal transmission layer, a plane unit, and a protrusion. The piezoelectric element includes a first electrode and a second electrode electrically isolated from each other. The signal transmission layer includes a first conductive zone and a second conductive zone. The first electrode of the piezoelectric element is electrically connected to the first conductive zone of the signal transmission layer, and the second electrode of the piezoelectric element is electrically connected to the second conductive zone of the signal transmission layer. The plane unit has at least one hole. The piezoelectric element, the signal transmission layer, and the plane unit are located at one side of the vibration unit. The protrusion is located between the vibration unit and the plane unit, and the protrusion corresponds to and protrudes toward the at least one hole.