Nested Valve Assembly for Compact Door Drive Control
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Solution Overview
Problem
Existing door drive systems require multiple bores and a larger housing due to the need for two valves, which increases costs and complexity.
Innovation Solution
A compact valve arrangement where a second valve is nested within a first valve, with adjustable threads and sealing elements to minimize space and allow for adjustable passage cross-sections, enabling efficient fluid flow and actuation of the door mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two separate valves are used for controlling hydraulic fluid flow in door drive, then the door closing and opening speeds can be controlled, but the housing size and device complexity increase
Solution Approach 1:
The second valve is nested inside the first valve, with the second valve body positioned within the first valve body. This nesting arrangement allows both valves to occupy the same spatial envelope, significantly reducing the overall housing size while maintaining the functionality of both valves for controlling hydraulic fluid flow during door closing and opening operations.
Solution Approach 2:
The two separate valve functions are merged into a single integrated valve assembly. The first valve controls flow during door closing while the second valve controls flow during door opening, and both are combined in one location within the housing, reducing the number of separate components and simplifying the overall structure.
2Ease of operation
If two separate valves are used for controlling hydraulic fluid flow, then the door closing and opening speeds can be controlled, but the number of hydraulic channels and device complexity increase
Solution Approach 1:
The two valve functions are merged into a single integrated assembly where the first valve body and second valve body share common structural elements. The sealing elements are arranged to seal both valves against the housing, and the valve seats are positioned to control flow in both directions, reducing the number of separate hydraulic channels and components needed.
Solution Approach 2:
The first valve body serves multiple functions: it acts as a structural component of the first valve, provides a mounting location for the second valve, and serves as part of the sealing system for both valves. This multi-functionality reduces the overall number of components and simplifies the hydraulic channel arrangement.
3Reliability
If standard valve arrangement is used, then the valve functions can be achieved, but the passage cross-section and housing space are not optimized
Solution Approach 1:
The second valve is nested within the first valve, with the second valve body positioned inside the first valve body. This arrangement optimizes the use of available space within the housing, allowing both valves to function reliably while minimizing the overall volume required for the valve assembly and reducing the housing space needed.
Solution Approach 2:
Instead of arranging the two valves side-by-side in a two-dimensional layout that would require more housing space, the invention transitions to a three-dimensional nested arrangement where one valve is positioned inside the other, effectively utilizing the radial dimension and significantly reducing the footprint required in the housing.
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 reduces the number of hydraulic channels and housing size while maintaining control over the door's closing and opening speeds, achieving unbraked actuation and adjustable closing phases with reduced material costs.
Implementation Method 1
having a seal which interacts directly with the inner surface of the piston bore by the seal enclosing the valve body in a End position of its displacement range liquid-tight seals against the inner surface of the piston bore
Implementation Method 2
The hydraulic fluid in the housing must flow from one side of the piston to the other via hydraulic channels and valves
Implementation Method 3
a piston which is arranged in a housing and is acted upon by a spring
Data Source
Figure 1~2
AI summary
The device has two valves (5, 6) arranged adjustably in hydraulic channels (2`, 2``, 2```), where hydraulic fluids of a door drive flows through the channels. The two valves have two valve bodies (5`, 6`) respectively, where the valve body (6`) is arranged in the valve body (5`). The valve (6) has a valve seat (14) that is arranged in the body (5`). The channel (2```) is connected with the valve (6) through recesses of the body (5`).