Rotatable SWI Heater Head With Level Switch Safety Cutoff
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Solution Overview
Problem
Conventional LPG patio heaters are inefficient, bulky, and limited by the need for a large and heavy fuel tank, restricting their design and usability, while SWI heaters face safety concerns due to power limitations and the need for precise placement.
Innovation Solution
A SWI heater system with a support assembly, wheels for mobility, a rotatable head for directed heat, safety mechanisms like thermocouples and extendable safety bars, and a continuous energy source to address inefficiencies and safety issues, allowing for indoor and outdoor use without exhaust fumes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If SWI heater power rating is increased above 1500 watts, then heating efficiency and utility value are improved, but safety concerns and risk of fire hazards increase
Solution Approach 1:
The patent implements preliminary safety actions by installing multiple safety mechanisms (thermostat, overheat protection, tip-over switch) before the heater operates at high power. These preventive measures are built into the system design to detect and respond to dangerous conditions before they can cause harm, allowing the heater to safely operate at higher power ratings for improved heating efficiency.
Solution Approach 2:
The patent applies beforehand cushioning by incorporating safety buffers and protection systems that cushion against potential hazards. The thermostatic control, overheat shutdown mechanism, and tip-over protection create safety margins that cushion the system against running away or causing fire hazards, enabling higher power operation with reduced risk.
2Productivity
If heater head is positioned closer to objects to be heated, then heating effectiveness is improved, but safety risk increases
Solution Approach 1:
The patent introduces safety mechanisms as intermediaries between the heater head and objects to be heated. The thermostatic control and overheat protection systems act as intermediaries that monitor temperature and automatically shut down the heater if dangerous conditions are detected, allowing the heater to be positioned closer to objects for improved heating effectiveness while maintaining safety.
3Duration of action of moving object
If LPG tank size is increased to improve heating duration, then operational time is extended, but device portability and design flexibility are reduced
Solution Approach 1:
The patent replaces the mechanical/LPG-based heating system with an electrical heating system. This substitution eliminates the need for large LPG tanks, significantly reducing device weight and improving portability while maintaining heating duration through efficient electrical heating elements and SWI technology that provides focused, high-efficiency heating.
Solution Approach 2:
The patent changes the energy source parameter from chemical (LPG) to electrical, which fundamentally alters the weight and portability characteristics. This parameter change allows the heater to achieve extended operational duration through efficient electrical heating without the burden of heavy fuel tanks, enabling both indoor and outdoor use with improved mobility.
4Adaptability or versatility
If heater design is optimized for aesthetic appeal, then user satisfaction is improved, but structural complexity and manufacturing difficulty increase
Solution Approach 1:
The patent incorporates a rotatable heater head that can dynamically adjust its orientation to direct heat toward different areas. This dynamic feature provides design flexibility and versatility, allowing the heater to adapt to various heating scenarios and aesthetic placements while maintaining relatively simple structural implementation through a rotational joint mechanism.
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 system provides efficient, safe, and versatile heating with improved mobility and design flexibility, reducing operational costs and safety hazards compared to traditional LPG heaters.
Implementation Method 1
SWI heaters have a heat energy conversion rate of approximately 92%
Implementation Method 2
provide a thermocouple so that the heater head may be turned off if the thermocouple senses a temperature level reaching a threshold dangerous level
Implementation Method 3
provide a level switch that interrupts power supply to the heater head unit when the heater is not in a substantially level position
Implementation Method 4
SWI heaters can be directly aimed toward an object to be heated whereas LPG heaters are designed to heat the ambient environment
Data Source
AI summary
An indoor or outdoor heater with a safety bar, a tiltable heater head, a power controlling and power limiting device serving as safety mechanisms.