Automatic Deflator Valve Vortex Flow and Threadless Stem
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Solution Overview
Problem
Automatic deflator valves face issues with accuracy, repeatability, and noise due to tolerance-related leakage and unpredictable exhaust paths, leading to less precise and reliable destination pressure settings during deflation.
Innovation Solution
The deflator valve incorporates a piston with an O-ring for reduced air leaks, skewed or irregularly shaped exhaust vents, and input ports to create a vortex flow, along with a threadless lead-in and lock chuck attachment mechanism for faster and more accurate pressure adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional exhaust vents and input ports are used, then the device structure is simple, but the deflation accuracy and repeatability deteriorate due to tolerance-related leakage and unpredictable exhaust paths
Solution Approach 1:
The exhaust vent is divided into multiple segments (first exhaust vent and second exhaust vent) with different functions: the first exhaust vent controls pressure relief accuracy while the second exhaust vent manages airflow direction. This segmentation allows precise control over pressure regulation while maintaining manageable structural complexity.
Solution Approach 2:
The input ports are positioned asymmetrically relative to the exhaust vents, creating a specific vortex flow pattern. This asymmetric arrangement ensures predictable airflow paths and reduces tolerance-related leakage, improving deflation accuracy without requiring overly complex symmetric configurations.
2Productivity
If standard threaded attachment methods are used, then the connection is secure, but the attachment and removal time increases
Solution Approach 1:
The valve stem incorporates a pre-formed depression pin that aligns with the valve core button. This preliminary geometric configuration enables rapid engagement by simply pushing the valve stem into the body, eliminating the need for threading operations while maintaining secure connection through the depression pin's mechanical engagement with the valve core.
3Reliability
If conventional piston sealing methods are used, then the manufacturing is simpler, but air leaks occur due to tolerance variations
Solution Approach 1:
An O-ring seal is introduced as an intermediary element between the piston and the piston cavity wall. This O-ring compensates for tolerance variations in the piston fit, creating a reliable seal that prevents air leaks without requiring extremely tight manufacturing tolerances on the piston itself, thus balancing reliability with manufacturability.
4Productivity
If straight exhaust vents are used, then the manufacturing is easier, but the deflation time increases due to slower air flow
Solution Approach 1:
The exhaust vents are oriented at angles rather than straight, introducing a dimensional change in the airflow path. This angular configuration accelerates air flow by utilizing pressure differentials more effectively and creating a more direct exhaust path, thereby reducing deflation time while remaining manufacturable through standard machining processes.
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 results in faster deflation times, reduced noise, improved accuracy, and easier pressure setting, achieving more consistent and repeatable destination pressures with reduced attachment and detachment times.
Implementation Method 1
skewed or irregularly shaped exhaust vents, and input ports to create a vortex flow
Data Source
AI summary
An improved deflator valve is described herein. The deflator valve has a main body with one or more ports, one or more vents, or port or vent slots for introducing air into or relieving pressure from within the main body in a vortex, circular flow. The deflator valve also includes a piston having an O-ring disposed around an outer circumference of the piston. The O-ring of the piston and the ports and vents are effective for reducing noise and deflation time and improving accuracy and ease of adjusting a pressure setting. The deflator valve can further include a dual or variable rate spring that can achieve an extensive destination pressure range. The deflator valve can also include a threadless lead in, fewer valve stem threads, or a lock chuck for enhanced valve stem attachment methods.