Bubble Pump Vaporization Device for Reliable Fluid Delivery
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Solution Overview
Problem
Conventional microfluidic structures for dispensing fluids to vaporization heaters are unreliable in providing consistent and desired amounts, often experiencing clogging and incomplete fluid delivery due to issues with fluid flow paths.
Innovation Solution
A vaporization device incorporating a bubble pump to transport fluid from a supply to a vaporization heater, with flow sequencing heaters within the fluid path to ensure consistent fluid delivery and prevent clogging, utilizing a heated surface to vaporize the fluid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional microfluidic structures are used to dispense fluid to a vaporization heater, then the device complexity is reduced, but the reliability of fluid delivery is poor due to clogging and incomplete fluid travel
Solution Approach 1:
The device is segmented into distinct functional modules: a bubble pump module for reliable fluid transport, a flow path with heated sections to prevent clogging, and a vaporization heater module. This segmentation allows each component to perform its specific function optimally, improving overall reliability while maintaining manageable complexity through modular design
Solution Approach 2:
Heated sections are incorporated into the flow path before the fluid reaches the vaporization heater. This preliminary heating action prevents clogging by maintaining fluid flowability throughout the transport path, ensuring complete fluid delivery to the vaporization zone without blockages
2Reliability
If the fluid flow path is simplified, then the device complexity is reduced, but clogging occurs and fluid delivery becomes incomplete
Solution Approach 1:
The temperature parameter is changed along the flow path by incorporating heated sections. This parameter change prevents clogging by maintaining the fluid in a flowable state throughout transport, ensuring complete delivery to the vaporization heater without requiring complex mechanical anti-clogging mechanisms
3Reliability
If a bubble pump is added to transport fluid, then the reliability of fluid delivery is improved, but the device complexity increases
Solution Approach 1:
The bubble pump uses thermal fields (heated sections) to generate and control bubble formation and movement, replacing complex mechanical pumping mechanisms. This substitution maintains reliable fluid transport while reducing mechanical complexity and improving reliability through a more robust thermal-based actuation mechanism
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 solution ensures reliable and consistent vaporization of fluids by preventing clogging and ensuring complete fluid delivery to the vaporization heater, enhancing the reliability and efficiency of fluid vaporization processes.
Implementation Method 1
The bubble pump includes a series of flow sequencing heaters located within the fluid flow path
Implementation Method 2
A fluid vaporization heater is located adjacent the outlet of the bubble pump to receive fluid from the bubble pump and to heat and thereby vaporize the received fluid
Implementation Method 3
The vaporization heater is operative to heat and thereby vaporize the received fluid
Data Source
AI summary
A vaporization device, including a fluid supply containing a vaporizable fluid; a bubble pump operative to pump fluid from the fluid supply to an outlet of the bubble pump; and a fluid vaporization heater located adjacent the outlet of the bubble pump to receive fluid from the bubble pump.