Dynamically Adjustable Reciprocating Fluid Dispenser
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Solution Overview
Problem
Current fluid dispensing technologies, such as valveless positive displacement pumps, face challenges with accurate calibration, increased error likelihood, field failures, and high maintenance costs due to complex designs and lack of adjustable calibration for varying conditions.
Innovation Solution
A dynamically adjustable reciprocating fluid dispenser system that includes a pump drive motor, an adjustment motor, and a controller to precisely control the volume of the pump bore, allowing for synchronous and asynchronous reciprocation, and adjustment of the pump shaft's angle or stroke through a system of gears, ensuring accurate and repeatable fluid dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If valveless positive displacement pumps are used for fluid dispensing, then fluid handling safety and accuracy are improved, but calibration accuracy and manufacturing precision deteriorate due to complex designs and moving parts
Solution Approach 1:
The patent removes the piston component from the pump system, extracting the source of mechanical complexity and potential failure. The valveless design eliminates moving parts that require calibration, while the simplified chamber structure maintains fluid handling safety and accuracy through static sealing surfaces and controlled flow paths.
Solution Approach 2:
The pump chamber is divided into distinct inlet and outlet zones with controlled communication paths. This segmentation allows independent optimization of fluid intake and discharge functions, enabling accurate fluid metering without requiring complex moving calibration mechanisms.
2Measurement precision
If complex pump designs are used to achieve accurate fluid dispensing, then fluid handling precision is improved, but device complexity increases leading to more errors and maintenance
Solution Approach 1:
The piston and associated valve mechanisms are completely removed from the design. Fluid dispensing accuracy is achieved through precisely controlled chamber volumes and flow restriction elements rather than mechanical metering components, significantly reducing device complexity.
Solution Approach 2:
Mechanical metering mechanisms are replaced with a controlled flow system using flow restriction elements and pressure differential control. This substitution eliminates complex mechanical linkages while maintaining accurate fluid dispensing through fluid dynamic principles.
3Productivity
If pumps with moving parts are used for fluid dispensing, then fluid handling capability is improved, but field failure rate and maintenance costs increase
Solution Approach 1:
All moving parts including pistons, valves, and seals are extracted from the pump design. The resulting static chamber system eliminates wear mechanisms and failure modes associated with moving components, dramatically improving field reliability while maintaining fluid dispensing capability through controlled flow paths.
Solution Approach 2:
The valveless design allows the pump to self-regulate flow through pressure differentials and flow restriction elements without requiring active control mechanisms. This passive operation eliminates the need for maintenance of moving control parts while preserving full fluid dispensing functionality.
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 system achieves extremely accurate, repeatable, and dynamic fluid dispensing, reducing errors and maintenance costs, and is applicable across various industries and fluid types.
Implementation Method 1
A pump drive motor is coupled to the reciprocating fluid pump to actuate a pump shaft within a pump cylinder
Implementation Method 2
an adjustment motor (e.g., a linear actuator, etc.) that is coupled to an adjustment mechanism, which selectively adjusts the volume of the pump bore
Data Source
AI summary
Systems and methods for providing a dynamically adjustable, synchronously and/or asynchronously reciprocating fluid dispenser. A pump drive motor is coupled to the reciprocating fluid pump to actuate a pump shaft within a pump cylinder, wherein the pump shaft includes a duct that allows fluid to selectively pass thereby within the pump cylinder. As the pump shaft rotates within the pump cylinder, fluid is allowed to enter into a pump bore defined by a portion of the pump cylinder through a pump ingress port. As the pump shaft rotates, it blocks the pump ingress port. Further rotation allows the duct to allow the fluid in the pump bore to be dispensed through a pump egress port. An adjustment motor is coupled to an adjustment mechanism, which selectively adjusts the volume of the pump bore. A controller is coupled to the adjustment motor to dynamically control the adjustment motor, to cause the adjustment mechanism to be precisely and repeatably modified, and/or to control the particular waveform. As such, the volume of fluid dispensed is extremely accurate, repeatable, and dynamic.