Gas Solenoid Valve Buffer Groove for Chatter Suppression
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Solution Overview
Problem
Gas solenoid valves experience chattering issues due to abrupt pressure fluctuations, leading to noise, damage, and contamination, particularly when filling gas tanks, which existing technologies fail to adequately address.
Innovation Solution
The design incorporates a housing with a guide member, main valve body, biasing members, and an electromagnetic drive device, featuring a buffer groove and depressurization passages to minimize pressure fluctuations and reduce chattering by guiding gas flow and discharging excess gas, thereby stabilizing the main valve body's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If gas pressure is used to lift the main valve body to open the channel, then the valve can be opened for gas filling, but chattering occurs at the main valve body causing noise, damage, and contamination
Solution Approach 1:
A buffer groove is introduced as an intermediary space between the main valve body and the guide member. This buffer groove absorbs excess gas pressure and prevents it from directly acting on the main valve body, thereby eliminating the chattering phenomenon while maintaining the gas filling capability
Solution Approach 2:
The excess gas that causes chattering is extracted from the harmful path by directing it into the buffer groove through the guide member. This separates the useful gas flow (through the valve port) from the harmful pressure fluctuations (in the buffer groove), resolving the contradiction between productivity and reliability
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 effectively minimizes chattering at the main valve body, reducing noise and wear, and preventing contamination by stabilizing internal pressure and enhancing sliding resistance.
Implementation Method 1
an electromagnetic drive device that generates an excitation force to cause the main valve body to move to the open position, the excitation force opposing the biasing force of the second biasing member
Implementation Method 2
a first biasing member that is disposed in a housing space and biases the main valve body in the opening direction
Implementation Method 3
a second biasing member that provides, to the main valve body, a biasing force opposing a biasing force of the first biasing member to position the main valve body in the closed position
Implementation Method 4
configured to move in an opening direction by pressure of gas supplied through the first port
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 and an open position and configured to move in an opening direction by pressure of gas supplied through the first port; a guide member disposed having one end facing the valve port and including an inner hole in which the main valve body is inserted; a first biasing member that is disposed in a housing space formed inward of the guide member to surround the main valve body and biases the main valve body in the opening direction; a second biasing member that provides a biasing force 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 second biasing member to cause the main valve body to move to the open position. The housing space is spaced apart from the one end in the opening direction. A buffer groove is formed at the one end of the guide member to surround an opening end of the inner hole of the guide member.