Gas Stove Safety Switch Integrating Ignition and Flame Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional gas stove ignition devices lack a comprehensive solution for sequent ignition, automatic gas shut-off when the flame is out, and temperature control, often resulting in complex structures, large size, and safety issues.
Innovation Solution
A safety switch with a cone valve chamber, check ports, electromagnetic valve, temperature controllers, and a knob system that integrates sequent ignition, automatic gas shut-off, and temperature control, using a combination of conventional components like thermocouples and fluid-type temperature controllers to manage gas flow and temperature sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a control unit is added to integrate ignition, gas shut-off, and temperature control functions, then functional completeness is improved, but device complexity and size increase
Solution Approach 1:
The patent applies multi-functionality by integrating three distinct safety functions into a single switch device: (1) sequent ignition control through the electromagnetic valve, (2) automatic gas shut-off via the thermocouple sensing mechanism, and (3) temperature control through the bimetallic strip. This allows one device to perform multiple safety-critical functions that would traditionally require separate control units, thereby improving functional completeness without proportionally increasing complexity
Solution Approach 2:
The patent combines multiple safety mechanisms into a unified switch structure where the electromagnetic valve, thermocouple, and bimetallic strip are integrated within the same housing and operate cooperatively. The close member and plug are shared components that serve multiple functions across different safety mechanisms, reducing overall device complexity while maintaining all required functions
2Reliability
If multiple safety functions are integrated into one device, then safety reliability is improved, but device size increases
Solution Approach 1:
The patent employs nesting by placing the thermocouple, electromagnetic valve, and bimetallic strip within the compact housing of the switch device. The close member and plug are nested components that move within the valve chamber, maximizing space utilization. This nested arrangement allows multiple safety functions to coexist in a compact form factor, improving safety reliability without proportionally increasing device size
3Device complexity
If conventional separate ignition devices are used, then device simplicity is maintained, but safety problems occur due to lack of integrated control
Solution Approach 1:
The patent implements feedback mechanisms where the thermocouple continuously monitors flame presence and automatically triggers gas shut-off through the electromagnetic valve when flame is detected as absent. The bimetallic strip provides continuous temperature feedback to regulate gas flow and maintain safe operating temperatures. This automated feedback control ensures safety functions operate reliably without requiring complex external control systems
Solution Approach 2:
The switch device performs self-service safety functions where the thermocouple automatically detects flame status and triggers gas shut-off without external intervention. The bimetallic strip self-regulates temperature by expanding or contracting in response to heat, automatically adjusting gas flow. These self-service mechanisms ensure safety operations occur reliably without adding complex external control systems
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 provides a compact, user-friendly, and safe gas stove ignition system that effectively manages ignition, flame safety, and temperature control, preventing gas leakage and ensuring safe operation.
Implementation Method 1
a thermocouple electrically connected to the electromagnetic valve. The knob is pressed and turned to drive a shaft of the close member forward the electromagnetic valve and move a plug of the electromagnetic valve away, therefore, gas may flow into the close member and flow through the output tunnel for the mother flame ignition device. And then, the thermocouple may sense the heat of the mother flame and generate current to activate the electromagnetic valve
Implementation Method 2
the thermocouple may sense the heat of the mother flame and generate current to activate the electromagnetic valve for return of the plug that gas keeps providing to the burner for maim flame to complete the ignition procedure. When the flame of the burner is out, the thermocouple can't sense the heat anymore that the electromagnetic valve returns to the initial condition to shut the gas up
Implementation Method 3
A first temperature controller is received in the second chamber and associated with the second check port to seal the second check port normally. A second temperature controller is received in the second output tunnel with an end sensing a temperature of the gas stove to switch the second tunnel communicated with outside or not and change a gas flow rate
Data Source
AI summary
A safety switch of a gas stove includes a main member including a cone valve chamber, a first chamber, a second chamber, an input tunnel, a first output tunnel and a second output tunnel connected to the second chamber and outside. A close member, an electromagnetic valve and a first temperature controller are mounted in the valve chamber, the first chamber and the second chamber respectively. A second temperature controller and a knob set are mounted on the main member. The knob set is connected to the close member, the first temperature controller and the electromagnetic valve to turn the close member and activate the first temperature controller and the electromagnetic valve for control of gas flowing into the input tunnel or flowing out of the first and second output tunnels. The present invention provides the functions of sequent ignition, shut the gas when flame is out, and temperature control.