Self-igniting Cap for Water Pipe Using Pressure Sensor
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Solution Overview
Problem
Existing methods for igniting combustible materials in waterpipes, such as bongs, face challenges in maintaining a stable flame in outdoor environments due to wind and ambient conditions, and can result in unpleasant tastes from sulfur or chemical residues from lighter fuels.
Innovation Solution
A self-ignitor system comprising an igniter cap with a housing containing a power source, a resistive coil igniter, and a pressure sensor that generates localized heat above 450° F upon detecting a user's inhalation, allowing for efficient and chemical-residue-free combustion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flame (lighter or match) is used to ignite herb in the bowl, then ignition can be achieved, but the flame is unstable in outdoor environments due to wind and ambient conditions
Solution Approach 1:
The patent replaces the mechanical/chemical flame-based ignition system with an electrical heating element (resistive coil) that can be controlled electronically. This substitution eliminates the instability caused by wind and ambient conditions, providing reliable ignition in outdoor environments while maintaining the ability to ignite herb in the bowl.
Solution Approach 2:
The system incorporates a pressure sensor that automatically detects when the user draws on the mouthpiece and triggers the heating element to ignite the herb. This self-activating mechanism eliminates the need for manual lighting operations, ensuring consistent ignition regardless of environmental conditions.
2Reliability
If matches or lighter fuels (butane) are used for ignition, then combustion can be initiated, but harmful chemicals (sulfur from matches, combustion residues from butane) are introduced into the smoke
Solution Approach 1:
The patent replaces chemical-based ignition sources (matches, butane lighters) with an electrical resistive heating element. This substitution eliminates the introduction of harmful chemicals such as sulfur from matches and combustion residues from butane, providing a cleaner ignition method that does not contaminate the smoke with additional chemical byproducts.
3Ease of operation
If a manual lighting method is used, then the user can control the ignition process, but additional manual操作步骤 are required that complicate the user experience
Solution Approach 1:
The system uses a pressure sensor integrated into the mouthpiece to automatically detect when the user draws on the pipe and triggers the heating element to ignite the herb. This self-activating mechanism simplifies the user experience by eliminating manual lighting steps while the underlying electronic control system manages the ignition process automatically.
Solution Approach 2:
The patent integrates the ignition system components (heating element, pressure sensor, power source) into the existing pipe structure, merging the lighting function with the breathing detection and smoke delivery system. This integration reduces the number of separate components and simplifies the overall device while maintaining automated functionality.
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 self-ignitor system ensures reliable ignition in various conditions while minimizing exposure to harmful chemicals, providing a cleaner and more consistent smoking experience.
Implementation Method 1
a resistive coil igniter, and a pressure sensor that generates localized heat above 450° F upon detecting a user's inhalation
Data Source
AI summary
An apparatus to automatically ignite herbs in a water pipe. The apparatus includes a cap dimensioned to engage a bowl piece of a water pipe and provide a restricted air path to the bowl. A pressure sensor within the cap senses a pressure change response to air being drawn through the air path. Responsive to a signal from the sensor a controller drives an igniter to ignite the herb within the bowl.