Transformer-Coupled Heater Connectors for Low-Resistance Mesh Heating
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Solution Overview
Problem
Existing aerosol-generating devices with high electrical resistance heating elements face manufacturing challenges, design restrictions, and structural fragility due to the need for small-diameter filaments, limiting material choices and flexibility.
Innovation Solution
A transformer assembly with a primary winding having more turns than the secondary winding is used to supply power to a heating element, reducing electrical losses and allowing for lower resistance heating elements, such as a mesh, with improved design flexibility and material options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If high electrical resistance heating elements with small-diameter filaments are used, then electrical losses are reduced and circuit efficiency is improved, but manufacturing precision requirements increase and structural fragility increases
Solution Approach 1:
The patent changes the electrical resistance parameter of the heating element from high to low, allowing the use of larger-diameter filaments that are easier to manufacture with standard precision while maintaining acceptable energy efficiency through optimized circuit design and transformer assembly
2Loss of energy
If high electrical resistance heating elements with small-diameter filaments are used, then electrical losses are reduced, but device complexity and design restrictions increase
Solution Approach 1:
The patent modifies the electrical resistance parameter to enable simpler design options including standardized filament diameters, conventional manufacturing processes, and greater flexibility in heating element geometry and material selection
Solution Approach 2:
The patent adopts a disposable cartridge design where the heating element is integrated into a replaceable cartridge, eliminating the need for complex maintenance and replacement mechanisms while reducing overall device complexity
3Use of energy by moving object
If high electrical resistance heating elements are used, then circuit efficiency is improved, but material choices and design flexibility are limited
Solution Approach 1:
The patent changes the electrical resistance parameter to enable the use of diverse materials including various metal alloys, ceramics, and composite materials with different thermal and electrical properties, allowing optimization for specific applications
Solution Approach 2:
The patent utilizes composite material structures combining different materials with complementary properties to achieve desired thermal, electrical, and mechanical characteristics while maintaining design flexibility
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 enables efficient power supply to heating elements with reduced losses, allowing for flexible design and material choices, particularly for flat, fluid-permeable meshes, without compromising system efficiency.
Implementation Method 1
a transformer assembly with a primary winding having more turns than the secondary winding is used to supply power to a heating element
Implementation Method 2
an electrically operated heater assembly acting as a vaporizer... Electrical power is supplied to the mesh to vaporize fluid held in the storage portion
Data Source
AI summary
The aerosol-generating device includes a housing, and a power supply configured to supply electrical power to a heating element by way of a transformer assembly within the housing. The transformer assembly includes a magnetic flux guide, a primary circuit including a primary winding extending around a first portion of the magnetic flux guide and electrically connected to the power supply, and a secondary circuit including a secondary winding inductively coupled to the primary winding and extending around a second portion of the magnetic flux guide. The number of turns in the primary winding is greater than the number of turns in the secondary winding. The secondary circuit includes at least two electrical contacts configured to form an electrical connection with the heating element.