Magnetically Actuated Valve Reducing Magnetic Reluctance
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Solution Overview
Problem
Existing magnetically actuatable valve devices struggle to exert a significant force on the valve body due to high magnetic reluctance in the circuit, which limits the magnetic flux and subsequent force applied.
Innovation Solution
The valve device incorporates guide elements made of magnetizable material on opposite sides of the valve body, forming a magnetic circuit with the magnetizable wall and valve body, reducing gap widths and magnetic reluctance, and an intermediate element with a recess and projection to create an asymmetry in the magnetic field, enhancing the force exerted on the valve body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the magnetic circuit uses larger gap widths between the valve body and magnetizable wall, then the valve body can move more freely, but the magnetic reluctance increases and magnetic flux decreases
Solution Approach 1:
The magnetic circuit is segmented into multiple paths through the introduction of guide elements. Instead of relying on a single large gap between the valve body and magnetizable wall, the magnetic flux is divided and conducted through multiple smaller gaps via the guide elements, reducing overall magnetic reluctance while maintaining valve body movement freedom.
Solution Approach 2:
Guide elements act as intermediary components between the valve body and the magnetizable wall. These intermediaries provide dedicated magnetic flux paths with controlled small gaps, mediating between the need for strong magnetic force (requiring small gaps) and the need for valve body movement freedom (requiring larger clearance).
2Force
If the magnetic circuit uses smaller gap widths to reduce magnetic reluctance, then magnetic flux and force increase, but the valve body movement is constrained
Solution Approach 1:
The magnetic circuit is segmented into multiple paths through the introduction of guide elements. Instead of relying on a single large gap between the valve body and magnetizable wall, the magnetic flux is divided and conducted through multiple smaller gaps via the guide elements, reducing overall magnetic reluctance while maintaining valve body movement freedom.
Solution Approach 2:
Guide elements act as intermediary components between the valve body and the magnetizable wall. These intermediaries provide dedicated magnetic flux paths with controlled small gaps, mediating between the need for strong magnetic force (requiring small gaps) and the need for valve body movement freedom (requiring larger clearance).
3Force
If the magnetic circuit uses asymmetric configuration with intermediate element, then magnetic flux is enhanced through optimized paths, but device complexity increases
Solution Approach 1:
An asymmetric intermediate element is introduced with a specific geometric configuration that creates optimized magnetic flux paths. The asymmetric design allows the magnetic flux to preferentially flow through paths with lower reluctance, enhancing the magnetic force on the valve body while the complexity is managed through the functional necessity of the asymmetric configuration.
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 allows for a substantial increase in the magnetic flux and force applied to the valve body, ensuring a low magnetic reluctance throughout the opening movement and maintaining a small gap between guide elements and the valve body, resulting in a more effective and efficient valve operation.
Implementation Method 1
the magnetic field acting on the valve body from the side moves the valve body away from the valve opening
Implementation Method 2
the magnetic field exerts a force on the valve body, which is directed parallel to the valve seat
Implementation Method 3
the magnetizable wall forms a magnetic circuit with the valve body
Implementation Method 4
The magnetic flux through the valve body is a measure of the force with which the valve body is moved away from the valve opening
Implementation Method 5
A large magnetic flux also means a great magnetic force acting on the valve body. The magnetic flux enters the valve body and exits therefrom. With a given magnetic potential difference, a low magnetic reluctance in the magnetic circuit is advantageous, in order to obtain a large magnetic flux
Implementation Method 6
By providing the guide elements it is achieved that only relatively narrow gaps have to be overcome in the magnetic circuit so that the magnetic reluctance is low in the magnetic circuit
Data Source
AI summary
A magnetically actuatable valve device, including an inner chamber delimited by at least one wall of magnetizable material, which wall forms a valve seat, and a magnet arrangement which generates a magnetic circuit with magnetic flux running in the magnetizable wall, and at least one magnetizable valve body which is moveable in the inner chamber, wherein at least one intermediate element is arranged in the wall extending around the inner chamber and with reduced magnetic conductivity in comparison with the wall, wherein the intermediate element includes a recess where a projection of the wall extends, where two magnetizable guide elements are arranged in the inner chamber on opposite sides of the valve body; and offset to the recess, wherein the guide elements guide the valve body and together with the wall form the magnetic circuit, wherein magnetic flux runs through the wall, the valve body, and guide elements.