Magnetic Ball Valve Actuation for Leak-Tight Dispensing
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Solution Overview
Problem
Existing dispensing systems, particularly carbonated dispensing head valves, face issues with leakage and sealing due to the need for components to penetrate through the chamber wall, and 'wet' pistons require precise machining and are not self-cleaning, with the fluid acting as a lubricant posing challenges.
Innovation Solution
A novel valve mechanism using a ball that rolls off an opening to control fluid flow, eliminating the need for components to penetrate the chamber wall and utilizing magnetic or electro-magnetic means to open and close the valve, with the ball self-sealing and self-cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a paddle valve with an arm penetrating through the chamber wall is used, then the valve can be actuated to open and close, but leakage and sealing issues occur at the penetration point
Solution Approach 1:
The invention extracts the problematic penetrating arm from the system by replacing it with a magnetic coupling mechanism. The magnetic driver operates entirely outside the fluid chamber, eliminating the penetration point that causes leakage and sealing failures while still enabling valve actuation through magnetic field transmission.
Solution Approach 2:
The invention replaces the mechanical penetration system (arm passing through wall) with a magnetic field-based actuation system. The magnetic driver and magnetically responsive element interact through the chamber wall without physical penetration, substituting mechanical contact with magnetic field interaction to eliminate sealing issues.
2Ease of operation
If a wet piston is used in the solenoid, then the valve can be controlled, but precise machining of sliding surfaces is required to maintain closing of the orifice
Solution Approach 1:
The invention replaces the wet piston mechanical system with a magnetic coupling system. The ball valve mechanism controlled by magnetic attraction eliminates the need for precision-machined sliding surfaces, as the magnetic field provides the actuating force without requiring tight mechanical tolerances for sealing and control.
Solution Approach 2:
The ball valve design inherently self-seals through the magnetic attraction force that pulls the ball against the seat, eliminating the need for externally controlled piston positioning and precision sliding surfaces. The system self-regulates the sealing contact through the magnetic field strength.
3Ease of operation
If the fluid acts as a lubricant for the sliding surfaces, then the mechanism can operate, but the character of the fluid creates problems for lubrication
Solution Approach 1:
The invention eliminates the sliding surfaces that require lubrication by replacing the piston-based mechanical system with a magnetic coupling and ball valve mechanism. This substitution removes the dependency on fluid lubrication properties, allowing the valve to operate reliably regardless of the fluid's lubricating characteristics.
4Device complexity
If a fixed piston is used, then the valve structure is simple, but the piston is not self-cleaning and accumulates debris
Solution Approach 1:
The invention replaces the fixed piston with a dynamic ball valve mechanism actuated by magnetic coupling. The ball's rotational and positional movements within the valve body create self-cleaning action that prevents debris accumulation, while the overall structure remains relatively simple through the use of few moving parts.
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 design reduces leakage and sealing issues, enhances the accuracy of fluid control, and simplifies the mechanism for opening and closing the valve, allowing for efficient and reliable fluid dispensing without the need for precise machining of sliding surfaces.
Implementation Method 1
a magnetic driver positioned external to the fluid flow path and in communication with the check ball to move the check ball between the blocked position and the open position
Implementation Method 2
utilizing magnetic or electro-magnetic means to open and close the valve
Data Source
AI summary
Examples disclosed herein relate to conduits, devices, systems and methods, which may include a dispensing device including a valve configured to interact with an inlet stream, the inlet stream having a first pressure, the valve having an outlet area with an outlet stream, the outlet stream having a second pressure; and a solenoid configured to interact with the outlet stream.