Vacuum Valve Piston Drive with Angled Partial Paths
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Solution Overview
Problem
Conventional valves with multiple partial paths for closure require complex drive mechanisms and multiple pressure medium loading, which can be inefficient and costly, especially in applications requiring precise control like vacuum technology.
Innovation Solution
A valve drive system utilizing two pistons connected by a prestressing element, such as a spring, that moves the closure member through angled partial paths, with a common pressure line for both cylinder spaces, allowing for efficient operation by pre-stressing the pistons and using pressure medium interaction to guide the closure member from open to closed positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional valve drive mechanisms with multiple pressure medium loadings are used, then the closure member can be moved through multiple partial paths, but the device complexity and cost increase
Solution Approach 1:
The patent combines multiple cylinder spaces into a single integrated valve drive unit, where multiple pistons operate within shared cylinder spaces connected by common pressure lines. This merging eliminates the need for separate drive mechanisms for each partial path, reducing overall device complexity while maintaining the capability to control closure member movement through multiple angled partial paths.
Solution Approach 2:
The common pressure lines serve multiple functions by connecting different cylinder spaces, allowing a single pressure medium source to control multiple pistons simultaneously. This multi-functional design enables the valve drive to manage complex multi-path closure member movements using a unified pressure control system, reducing the number of separate components needed.
2Measurement precision
If multiple cylinder spaces are used for multi-path closure, then precise control is achieved, but the quantity of pressure medium and system complexity increase
Solution Approach 1:
Multiple cylinder spaces are merged into a unified system with common pressure lines that distribute pressure medium to multiple pistons. This allows precise control of the closure member through coordinated piston movements while using a shared pressure medium reservoir, reducing the total quantity of pressure medium required compared to completely separate systems.
Solution Approach 2:
The prestressing element (spring) automatically pre-stresses the pistons in the direction away from each other, creating initial separation without requiring external pressure medium. This self-service mechanism reduces the pressure medium consumption by eliminating the need for pressure medium to perform the prestressing function.
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 solution simplifies the valve drive mechanism, reduces complexity and cost, and ensures precise control over the closure member's movement, enhancing operational efficiency and adaptability in various applications, including vacuum technology.
Implementation Method 1
the prestressing element is particularly preferably a spring element. Spring elements generally mean elastic elements which are deformed elastically in the case of a corresponding compressive loading or tensile loading and return automatically elastically into their initial shape and/or position again when the external forces stop.
Implementation Method 2
the movement of the pistons is favorably defined exclusively by the interaction of the pressures of the pressure medium and the loading by means of the prestressing element
Data Source
AI summary
A valve, in particular a vacuum valve, in which, in order to close a passage opening, in particular of the valve, at least one closure member can be moved by a valve drive, starting from a maximum open position, in which the closure member opens the passage opening at least partially, first on a first partial path into an intermediate position, and the closure member can be moved, starting from the intermediate position, on at least one second partial path which is angled away from the first partial path into a closed position, in which the closure member closes the passage opening, the valve drive having at least two cylinder spaces which are loadable in each case with a pressure medium, at least one piston being mounted displaceably in each of the cylinder spaces, and the pistons being supported on one another by way of at least one prestressing element.