Conical Pin Ventilation Passage for Pneumatic Control Valves
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Solution Overview
Problem
Existing pneumatic control valves experience reduced venting speed due to suboptimal ventilation air flow guidance, particularly in the area between the annular sealing seat and tubular extension, leading to increased flow resistance and construction costs.
Innovation Solution
A conical pin is integrated into the central ventilation passage of the valve piston, with streamlined transitions between the annular sealing seat and the pin, and the pin's diameter is designed to minimize cross-sectional restriction, along with a tapered or rounded surface on the non-displaceable sealing seat to enhance airflow guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a tubular extension is used to form the vent connection, then the construction is simple, but the passage cross-section is narrowed and flow resistance increases
Solution Approach 1:
The patent applies curvature by replacing the tubular extension with a conical pin that has rounded transitions. The conical shape with gradually decreasing diameter and rounded edges eliminates sharp corners and fissures, creating streamlined airflow paths that reduce flow resistance while maintaining construction simplicity.
2Ease of manufacture
If a fissure is present between the annular sealing seat and tubular extension, then the construction is simple, but the ventilation air flow is not guided optimally
Solution Approach 1:
The conical pin design eliminates the fissure problem by providing continuous, curved surfaces. The rounded transitions from the annular sealing seat to the conical pin create smooth airflow guidance without the discontinuities and sharp edges that characterize fissure-based designs.
3Volume of moving object
If the passage cross-section is narrowed, then the construction is compact, but the flow resistance increases
Solution Approach 1:
The patent changes the geometric parameters of the ventilation passage by using a conical pin with gradually decreasing diameter rather than a constant-diameter tube. This parameter variation allows the passage to remain compact while minimizing flow resistance through the streamlined conical shape and optimized diameter progression.
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 significantly reduces flow resistance and increases venting speed without increasing installation or production costs, ensuring efficient pneumatic connections and improved performance.
Implementation Method 1
an annular space formed between the ring-shaped sealing seat and the pin is streamlined, has rounded transitions from the annular sealing seat to the annular space and from the annular space to the conical peg, and that the peg, due to its diameter decreasing in the outflow direction, is designed in such a way that it only slightly restricts the cross section of the ventilation passage and a streamlined guidance of a ventilation air flow guided in the ventilation passage causes
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a device in a control valve designed as a braking value indicator for a single-circuit or dual-circuit pneumatic brake system in a vehicle for adjusting a brake pressure corresponding to a desired braking effect, said control valve (1) comprising at least a first pneumatic valve system (10). In order to increase the bleeding rate, rounded transitions (24, 25) for conducting the bleeding air stream (52) in a flow-optimized manner are arranged at least in the region of a bleeding passage (18) of the at least first pneumatic valve system (10).