Gas Solenoid Valve Pressure Buffering for Main Valve Stability

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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.

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 manage gas flow and pressure, minimizing fluctuations and chattering.

Engineering Contradictions & Design Principles

VSEngineering 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

Engineering Contradiction:

Improvegas filling capabilityVSAvoidvalve stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

A buffer groove is introduced as an intermediary structure between the main valve body and the guide member. This buffer groove receives and absorbs the gas that would otherwise cause direct pressure fluctuations on the main valve body, thereby mediating the harmful effect and preventing chattering while maintaining the gas filling function

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The gas that causes harmful pressure fluctuations and chattering is redirected into the buffer groove, where it serves a beneficial function by being contained and controlled. The previously harmful gas flow becomes part of a controlled pressure management system that stabilizes the main valve body operation

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 reduces chattering at the main valve body, preventing noise and damage 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

Methodology Applied

Scientific EffectElectromagnetic force: Electromagnet

Implementation Method 2

gas pressure causes a main valve to be lifted off a valve seat, thus opening a channel

Methodology Applied

Scientific EffectGas pressure: Pressure Increase

Implementation Method 3

a first biasing member that is disposed in a housing space and biases the main valve body in the opening direction

Methodology Applied

Scientific EffectElastic force: Spring

Implementation Method 4

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

Methodology Applied

Scientific EffectElastic force: Spring

Data Source

PatentUS11821539B2Gas solenoid valve

Publication Date: 2023.11.21 KAWASAKI JUKOGYO KK

AI summary

A gas solenoid valve includes: a housing; a main valve body; a guide member; 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 an opening direction; a second biasing member; and an electromagnetic drive device. The housing space is spaced apart from one end of the guide member in the opening direction. A buffer groove is formed at the one end of the guide member to surround an opening end of an inner hole of the guide member.