Multi-Cavity Piezoelectric Pump Layout for High Pressure and Flow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing piezoelectric micropumps face challenges in simultaneously increasing output pressure and flow while maintaining miniaturization, as series or parallel connections through external pipelines increase pipeline length and overall volume, hindering design compactness.
Innovation Solution
A multi-vibrator connected piezoelectric pump with multiple pump cavities arranged in series, parallel, or both, featuring internal connections and independent resonance point tracking circuits, reduces volume and enhances output capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple micropumps are connected in series or parallel through external pipelines to increase output flow or pressure, then the output capacity is improved, but the pipeline length increases and runner resistance increases, weakening the output capacity
Solution Approach 1:
The patent merges multiple pump cavities into a single integrated pump body with internal fluid passage connections. The first and second pump cavities are connected through an internal fluid passage within the pump body, eliminating the need for external pipelines. This combining approach increases output capacity while reducing pipeline length and runner resistance.
Solution Approach 2:
The patent nests multiple pump cavities within a single pump body structure. The first and second pump cavities are arranged inside the same pump body and connected through internal passages, creating a nested configuration that reduces overall system volume and eliminates external connecting pipelines.
2Productivity
If multiple micropumps are connected through external pipelines to increase output flow or pressure, then the output capacity is improved, but the overall volume of the pump increases, which is not conducive to miniaturization design
Solution Approach 1:
The patent combines multiple pump cavities into a single integrated pump body with internal fluid passage connections. The first and second pump cavities are connected through an internal fluid passage within the pump body, eliminating the need for external pipelines. This combining approach increases output capacity while reducing pipeline length and runner resistance.
Solution Approach 2:
The patent nests multiple pump cavities within a single pump body structure. The first and second pump cavities are arranged inside the same pump body and connected through internal passages, creating a nested configuration that reduces overall system volume and eliminates external connecting pipelines.
3Productivity
If a single piezoelectric vibrator is used, then the pump structure is simple, but it is difficult to improve both output pressure and flow simultaneously
Solution Approach 1:
The patent divides the pump into multiple independent pump cavities (first and second pump cavities), each equipped with its own piezoelectric vibrator. This segmentation allows each cavity to contribute to the overall output, enabling simultaneous improvement of output pressure and flow while maintaining a relatively simple structure through modular design.
Solution Approach 2:
The patent creates a multi-functional pump system where multiple pump cavities work together to achieve both pressure and flow enhancement. Each pump cavity with its piezoelectric vibrator serves as a functional unit that contributes to both pressure generation and flow delivery, making the system universally capable of meeting diverse output requirements.
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 pump achieves increased output flow and pressure with reduced volume, ensuring miniaturization and safety through independent frequency control and internal connections, while maintaining stable one-way fluid transmission.
Implementation Method 1
the piezoelectric micropump is an important branch, which forms positive and negative sound pressures at the check valve under ultrasonic vibration of the piezoelectric vibrator
Implementation Method 2
under ultrasonic vibration of the piezoelectric vibrator
Implementation Method 3
the piezoelectric vibrators are respectively equipped with an independent resonance point tracking circuit and an independent power control circuit, and vibrate periodically under the drive of periodic voltage signals above 20 KHz
Data Source
AI summary
The invention relates to the technical field of piezoelectric pump, in particular to a multi-vibrator connected piezoelectric pump, an operating method and an application device, comprising a pump body and piezoelectric vibrators arranged in the pump body for fluid transmission. In the invention, a plurality of pump cavities are arranged in the pump body, the piezoelectric vibrator is arranged in each pump cavity, the plurality of piezoelectric vibrators are concentrated into the pump body, and the pump cavities are connected in series or parallel or in series and parallel, so that the pump body can provide large output flow and higher output pressure and greatly reduce the volume of the pump at the same output capacity, facilitating the miniaturization design of the product.