Integrated Gas Valve Timing Control for Accurate Shut-Off
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Solution Overview
Problem
Conventional gas valve control devices suffer from large timing errors, deadlocking issues, and lack of safety features, leading to potential accidents such as suffocation, fire, or explosion due to inaccurate gas shut-off.
Innovation Solution
A gas valve control device integrating a timing controller with an electromagnetic valve, a rotating button, contact plate, pressing spring, and a compact structure, featuring a microprocessor, electronic switching circuit, fault detection, and low-voltage detection circuits for precise timing and safety, ensuring accurate gas shut-off and preventing accidents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional timer is used in a home-use gas control valve, then gas shut-off timing is provided, but large timing error and deadlocking occur resulting in inaccurate gas shut-off
Solution Approach 1:
The patent replaces the conventional mechanical timer with an electromagnetic valve controlled by a microprocessor-based timing controller. This substitution eliminates mechanical wear and timing drift, providing accurate electronic timing control and reliable gas shut-off without deadlocking issues.
Solution Approach 2:
The patent changes the control parameter from mechanical timer rotation to electronic pulse width modulation (PWM) control of the electromagnetic valve. The microprocessor precisely controls the valve opening duration through electronic parameters, achieving accurate timing without mechanical errors.
2Ease of operation
If an electronic timing switch with thermoelectric couple and electromagnetic valve is used, then time control is facilitated, but single structure, rough appearance, and short life result
Solution Approach 1:
The patent incorporates a low-voltage detection circuit that automatically monitors the battery status and provides prompts before complete power failure. The system serves itself by detecting and responding to its own power state, ensuring continuous reliable operation and extended effective lifespan.
Solution Approach 2:
The patent includes a fault detection circuit and low-voltage detection circuit that identify potential failures before they occur. These protective circuits cushion against future failures by providing early warnings and preventing operation under faulty conditions, thereby extending device lifespan.
3Device complexity
If a compact structure with integrated timing controller and valve is designed, then features compact structure and long life are achieved, but manufacturing complexity increases
Solution Approach 1:
The patent merges the timing controller, electromagnetic valve, fault detection circuit, and low-voltage detection circuit into a single integrated control device. This consolidation achieves compact structure while the modular design with standardized components maintains manufacturing ease.
Solution Approach 2:
The integrated control device performs multiple functions: timing control, electromagnetic valve actuation, fault detection, and low-voltage detection. This multi-functionality in a single device achieves compactness while using standardized universal components that simplify manufacturing.
4Device complexity
If no gas source control device is installed between the gas stove and pressure regulating valve, then the structure is simple, but accidents such as suffocation, fire or explosion may occur due to forgotten gas shut-off
Solution Approach 1:
The gas control valve system performs automatic shut-off based on preset timing without requiring continuous user intervention. The microprocessor controls the electromagnetic valve to close automatically after the specified duration, providing self-service safety protection against forgotten gas shut-off.
Solution Approach 2:
The system incorporates fault detection and low-voltage detection circuits that provide feedback on system status. This feedback mechanism ensures safe operation by detecting abnormalities and preventing hazardous conditions, addressing safety concerns while maintaining relatively simple structure.
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 device provides accurate timing control, a compact and aesthetically pleasing design, easy operation, and enhanced safety with reliable shut-off functionality, reducing the risk of accidents and extending the device's lifespan.
Implementation Method 1
an electromagnetic valve, and a wire, and the electronic timing switch is serially connected to the thermoelectric couple and the electromagnetic valve
Implementation Method 2
a pressing spring, a valve cover, a valve pole
Data Source
AI summary
A gas valve control device, including at least: a timing controller, and a valve, including at least a rotating button, a contact plate, an electromagnetic valve, a pressing spring, a valve cover, a valve pole, a fixing pin, a plug bar, and a valve body having a cavity. Advantages of the gas valve control device include: integration of a timing controller and a control valve; timing control can be implemented mechanically or electrically; compact structure and good appearance; easy operation; safe and reliable; and accurate timing.