Gas Solenoid Valve Damping Chamber for Chattering Control
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Solution Overview
Problem
Solenoid valves used on gas tanks experience chattering issues during gas filling, leading to noise, damage to the valve seat, and contamination due to wear and tear.
Innovation Solution
A gas solenoid valve design that incorporates a damping chamber, where the biasing member is housed, to restrict the movement of the main valve body and dampen vibrations, thereby minimizing chattering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a damping chamber is added to dampen vibrations of the main valve body, then chattering is minimized, but the device size increases
Solution Approach 1:
The patent combines the damping chamber function with the existing biasing member housing space. The biasing member is disposed inside the damping chamber, and the chamber is formed within the plunger structure, merging two functional elements into one integrated component without increasing overall valve size
Solution Approach 2:
The plunger structure serves multiple functions: it houses the biasing member, contains the damping chamber, and provides the gap for gas flow control. This multi-functionality eliminates the need for separate damping components, resolving the contradiction between vibration damping and compact size
2Reliability
If gas flow through the damping chamber is unrestricted, then the damping chamber volume changes abruptly causing vibrations, but restricting gas flow increases complexity
Solution Approach 1:
The patent creates a localized gap between the seat piston and plunger that selectively restricts gas flow only where needed for damping control. This local restriction through a simple geometric feature rather than a complex mechanism achieves vibration control without increasing device complexity
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 solution effectively minimizes the occurrence of chattering at the main valve body, reducing noise, preventing damage, and minimizing contamination, while also avoiding an increase in the valve's size.
Implementation Method 1
a solenoid that provides the excitation force to the plunger to attract the plunger to the stationary pole
Implementation Method 2
gas is introduced into and discharged from the damping chamber through a gap between the seat piston and the plunger
Data Source
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AI summary
A gas solenoid valve includes: a housing including a first port, a second port, and a valve port leading to the first port and the second port; a main valve body capable of moving between a closed position thereof closing the valve port and an open position thereof opening the valve port and configured to move in an opening direction from the closed position to the open opposition by pressure of gas supplied through the first port; a biasing member that provides a biasing force acting in a closing direction from the open position to the closed position to the main valve body to position the main valve body in the closed position; and an electromagnetic drive device that generates an excitation force opposing the biasing force of the biasing member to cause the main valve body to move to the open position. A damping chamber is formed in the housing to damp movement of the main valve body.