Double Check Valve Anti-Twist Sleeve Design
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Solution Overview
Problem
Existing double check valves in commercial vehicles are not compact enough and lack structural stability, leading to energy losses due to turbulence and longer switching times, while also being costly and difficult to manufacture.
Innovation Solution
A double check valve with a sleeve having only one outlet opening and an anti-twist device, allowing for a smaller diameter design that maintains stability and prevents rotation, ensuring laminar flow and rapid switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the sleeve is designed with multiple outlet openings and thin intermediate webs to reduce diameter, then the device size is reduced, but the structural stability and longevity are compromised
Solution Approach 1:
The invention segments the fluid discharge function by providing multiple outlet openings (first, second, and third outlet openings) distributed around the sleeve circumference, while maintaining structural integrity through strategic placement and sizing of these openings rather than using thin webs between numerous openings
Solution Approach 2:
The invention applies local quality by making the sleeve wall thickness non-uniform, with thicker walls at critical locations between outlet openings to provide enhanced structural support where needed, while maintaining thinner walls in less critical areas to reduce overall diameter
2Strength
If the sleeve is designed with multiple outlet openings to ensure stability, then structural stability is improved, but the device diameter increases
Solution Approach 1:
The invention transitions from a two-dimensional lattice pattern of multiple small openings to a three-dimensional arrangement where outlet openings are distributed around the circumference at different angular positions, allowing stable fluid discharge without requiring thin intermediate webs that would increase diameter
3Productivity
If the sleeve is made predominantly closed and fixed to prevent rotation, then laminar flow and switching speed are improved, but the manufacturing complexity increases
Solution Approach 1:
The invention introduces asymmetry through the anti-twist device consisting of an asymmetric profile on the sleeve that engages with a corresponding asymmetric profile in the valve block, preventing sleeve rotation while maintaining a relatively simple manufacturing process using conventional molding or machining techniques
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
The compact design with a reduced diameter achieves high reliability, operational safety, and longevity, reducing installation space and manufacturing costs while ensuring effective pressure fluid discharge.
Implementation Method 1
a guide part 32, which can be inserted into the sleeve 31 in a longitudinally displaceable manner and can be moved axially therein by being acted upon with pressurized fluid
Implementation Method 2
close in two blocking directions or alternately in one of two blocking directions by a spring or pressure force acting in the closing direction
Implementation Method 3
released in a third direction by a flowing fluid by overcoming the closing force at one or both inputs
Data Source
Figure 1a~1c
Figure 1d~1e
Figure 1f~1g
AI summary
The invention relates to a double check valve (20) with a sleeve (21) and a guide part (32) which can be inserted longitudinally displaceably into the sleeve (21) and can be moved axially therein by means of a pressure fluid, and in which the shell of the sleeve (21) has an outlet (3) for the pressure fluid. According to the invention, the outlet (3) is formed by only one outlet opening (4) in the shell of the sleeve (21), the area of the outlet opening (4) is small in relation to the total area of the shell of the sleeve (21), and a locking element (23) is arranged or formed on the sleeve (21) with which the sleeve (21) can be positioned in a fixed angular position on a component (8), wherein in the fixed angular position the one outlet opening (4) is aligned in the direction of a pressure fluid discharge (13) arranged on the component (8) and is secured against rotation in relation to the pressure fluid discharge (13).