Inductive Down-Tube Carafe Heating for Safer Beverage Warming
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Solution Overview
Problem
Beverage carafe warmers with electrically resistive heating pads remain energized and can become hot even without a carafe, posing burn risks, and existing inductive heating systems do not effectively utilize down-tubes for beverage mixing and heating.
Innovation Solution
A carafe system with a non-metallic carafe and a funnel assembly featuring a down-tube made from electromagnetic-responsive material that functions as both a down-tube and an inductive heating element, heated by an alternating electromagnetic field generated by an inductive heating coil module, ensuring efficient heating of beverages without mixing with existing contents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If an electrically resistive heating pad is used to warm the carafe, then the carafe can be kept at a warm temperature, but the heating pad remains energized and becomes hot even without a carafe present, creating burn risks
Solution Approach 1:
The patent replaces the electrically resistive heating pad with an inductive heating system that uses electromagnetic fields to heat the beverage directly through the down-tube. This substitution eliminates the need for direct contact heating elements that remain hot when idle, thereby reducing burn risks while maintaining carafe warmth.
Solution Approach 2:
The inductive heating system activates only when needed through electromagnetic field generation, automatically heating the beverage through the electromagnetic-responsive down-tube material without requiring continuous energization of external heating elements. The system self-regulates by only heating when electromagnetic fields are applied.
2Stability of the object's composition
If a down-tube is used to pass freshly brewed beverage to the bottom of the carafe to create convection currents, then beverage mixing is improved, but the down-tube material must be impervious to water while still allowing effective heat transfer
Solution Approach 1:
The down-tube is constructed from composite or specially treated material that combines water imperviousness with electromagnetic responsiveness. This allows the tube to prevent water penetration while enabling inductive heating through electromagnetic field interaction, satisfying both the sealing requirement and the heating functionality.
Solution Approach 2:
The patent changes the material parameters of the down-tube by selecting or treating materials to be impervious to water while maintaining or enhancing their electromagnetic properties. This parameter modification allows the same material to satisfy both the water sealing requirement and the inductive heating capability.
3Use of energy by moving object
If inductive heating is applied to the down-tube to heat the beverage, then heating efficiency is improved and burn risks are reduced, but the down-tube material must be responsive to alternating electromagnetic fields
Solution Approach 1:
The down-tube utilizes composite or specially selected materials that possess both water imperviousness and electromagnetic field responsiveness. This composite material approach enables efficient inductive heating while maintaining the structural integrity and sealing properties required for down-tube functionality.
Solution Approach 2:
The material parameters of the down-tube are specifically modified or selected to enhance electromagnetic field responsiveness while maintaining water imperviousness. This parameter optimization allows efficient energy transfer from the electromagnetic field to the beverage through the down-tube material.
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 safely and efficiently heats beverages by using the down-tube as an inductive heating element, preventing overheating of the carafe and ensuring uniform temperature distribution through controlled electromagnetic heating, reducing burn risks and enhancing beverage mixing.
Implementation Method 1
generating an alternating electromagnetic field that interacts with the electromagnetic responsive material of the down-tube to cause at least part of the down-tube to function as an inductive heating element to heat any beverage within the carafe
Implementation Method 2
said material of the down-tube being, at least in part, a material responsive to alternating electromagnetic fields to create surface eddy currents that heat the down-tube
Implementation Method 3
The system safely and efficiently heats beverages by using the down-tube as an inductive heating element
Implementation Method 4
pass freshly brewed beverage from a hot beverage maker, such as a coffee brewer, to the bottom of the carafe to increase mixing of the beverage in the carafe through creation of convection currents
Data Source
AI summary
An inductively heated beverage carafe system (10) with a non-metallic carafe (13) has a funnel assembly (26) with a down-tube (34, 54) made from material impervious to water to pass hot beverage received within the funnel assembly (26) to adjacent the bottom (14) of the carafe (13) without mixing with beverage already present in the carafe until (13) the newly added hot beverage passes out of the open outlet end (59) and which is, at least partly a material responsive to alternating electromagnetic fields to induce surface eddy currents that heat at least part of the down-tube (34, 54) and an inductive heating coil module (36) for supporting the carafe (14) and generating an electromagnetic field to energize at least part of the down-tube (34, 54) to function as an inductive heating element within the carafe (13).