Dual-Cartridge Heating Assembly for Portable or Plug-In Use
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Solution Overview
Problem
Existing portable heating devices are limited by their reliance on a single heat source, either fuel-powered combustion or electrical power, making them unsuitable for use in locations without access to electricity or fuel, and combining both sources increases size, weight, and risks temperature control issues.
Innovation Solution
A portable device that alternates between hydrocarbon fuel and electric power sources, using interchangeable cartridges to provide dual heating capabilities while maintaining a streamlined and lightweight design, with separate mechanisms for safe and controlled heat generation in both modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both fuel-powered and electric heat sources are combined in a single device, then the device can be used in any location (portable or plugged-in mode), but the size, weight, and complexity of the device increase
Solution Approach 1:
The device separates the two heat sources into distinct, interchangeable cartridges - a fuel cartridge and an electric cartridge. Each cartridge contains its own heating element and power source (fuel tank or electrical connector), allowing them to be stored separately and attached only when needed. This segmentation reduces the weight of the device in any given mode while maintaining the ability to use either power source.
Solution Approach 2:
The device employs a dynamic cartridge attachment system where the power source can be changed based on the operating mode. The tank connection assembly accepts different cartridge types, and the system automatically or manually switches between fuel-powered and electric modes by simply replacing the cartridge. This dynamic reconfiguration allows the device to adapt to different locations without carrying both power sources simultaneously.
2Adaptability or versatility
If both fuel-powered and electric heat sources are combined in a single device, then the device can be used in any location (portable or plugged-in mode), but the device complexity increases
Solution Approach 1:
The device uses a universal tank connection assembly that can accept both fuel cartridges and electric cartridges through the same interface. The heating element, control circuitry, and safety mechanisms are designed to work with either power source, eliminating the need for separate systems for each mode. This multi-functionality reduces overall system complexity while maintaining versatility.
Solution Approach 2:
The invention extracts the power source (fuel tank or electrical connector) from the main device body and places it in interchangeable cartridges. This separation removes the complexity of integrating two different power systems into a single permanent structure, while the simple cartridge replacement mechanism provides an elegant solution for switching between modes.
3Power
If both fuel-powered and electric heat sources operate simultaneously, then heating capacity increases, but temperature control problems occur and unit damage is possible
Solution Approach 1:
The device segments the heating function into separate cartridges, where only one heating element can be active at a time based on which cartridge is installed. The fuel cartridge contains a fuel-powered heating element, while the electric cartridge contains an electric heating element. The system design prevents simultaneous operation by physically separating the heating elements into different cartridges that cannot both be installed or activated at the same time, thereby avoiding temperature control issues.
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
Enables the device to be used in any location, either portable or plugged into an outlet, without carrying fuel, while preventing simultaneous use of both sources to avoid temperature control problems, resulting in a versatile and efficient heat delivery system.
Implementation Method 1
an electric cartridge for connecting the device to a source of electricity... Current flowing through the circuit causes the heating element to reach a temperature
Implementation Method 2
a fuel cartridge is inserted for providing fuel for combustion... a spark source is provided for igniting a fuel/air mixture for combustion
Data Source
Figure 1
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Figure 4
AI summary
A portable device which generates heat and which can be used alternatively as a corded, plug-in device or as a cordless, fuel-powered device. The device has dual heating capabilities - each of which is powered by a unique cartridge. For use as a plug-in device an electric cartridge that connects the device to an adapter is utilized, whereas for use as a portable device a fuel cartridge is utilized for supplying a hydrocarbon fuel to support combustion. Use of one of the cartridges prevents the use of the other.