Vane Cell End Plate Recess for Sealing Stability
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Solution Overview
Problem
The existing vane cell machine designs are complex due to the use of separate plates for sealing, which complicates construction and reduces the structural integrity and efficiency of the sealing mechanism.
Innovation Solution
A single-piece end plate with a recess houses the sealing means, including a sealing ring and insert part, which is stabilized against radial movement and secured with force-generating means like springs or hydraulic pressure, allowing for effective sealing without compromising structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate plates are used for sealing at the axial end of the housing, then the sealing function is achieved, but the construction becomes complicated and structural integrity is reduced
Solution Approach 1:
The patent combines the sealing function and structural support function into a single integrated end plate. The end plate includes a sealing recess that houses the sealing means, eliminating the need for separate sealing plates. This merging of functions simplifies the construction while maintaining effective sealing between the rotor and stator bore.
2Strength
If separate plates are used for sealing, then mounting is complicated, but using a single piece end plate enhances structural stiffness to withstand higher pressures
Solution Approach 1:
The end plate is designed as a single piece structure that integrates both sealing and support functions. The sealing means are mounted within a recess formed in the end plate, creating a unified component that is both structurally stiff for withstanding high pressures and simpler to manufacture and install as a single unit.
3Device complexity
If sealing means are positioned without a recess, then the structure is simpler, but radial movement of sealing means cannot be stabilized
Solution Approach 1:
The patent introduces a recess (a dimensional feature) in the end plate to house the sealing means. This recess provides lateral containment that stabilizes the sealing means against radial movement while maintaining the overall simplicity of the single-piece end plate structure. The recess acts as a geometric constraint that prevents unwanted movement.
4Reliability
If sealing means contact the radially outer part of the end plate, then sealing is achieved, but friction exceeds predefined values
Solution Approach 1:
The patent extracts the sealing function from the main body of the end plate by positioning the sealing means within a dedicated recess. This allows the sealing means to contact the rotor at a controlled location that protrudes slightly from the recess, achieving effective sealing while limiting the contact area and keeping friction forces within predefined values.
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 simplifies the construction and mounting process, enhances the structural stiffness to withstand higher pressures, and ensures efficient sealing by decoupling the sealing and supporting functions, maintaining a predefined friction level and securing the sealing means against the rotor.
Implementation Method 1
force generating means are provided to press said sealing means against said rotor. Preferably said force generating means comprise spring means
Implementation Method 2
force generating means comprise spring means and/or hydraulic pressure. The hydraulic pressure can be generated during the operation of the vane cell machine.
Implementation Method 3
the friction between the sealing element and the rotor does not exceed a predefined value on the one hand and on the other hand the force is high enough to secure sufficient sealing
Data Source
AI summary
A vane cell machine is provided comprising a housing having a stator bore with an outer limitation formed by a circumferential wall and two axial end faces (5), a rotor mounted rotatably in said stator bore, a plurality of vanes moveable in radial direction relative to said rotor and sliding along said circumferential wall, and sealing means (12) at least at one of said end faces (5), said sealing means (12) acting on said rotor in axial direction. Such a vane cell machine should have a simple construction. To this end said end face (5) is formed at an end plate (11) of said housing wherein said end plate (11) comprises a recess in which said sealing means (12) are rotated.