Coal Grate Positioning Mechanism for Precise Grill Temperature Control
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Solution Overview
Problem
Charcoal kettle grills lack efficient temperature control mechanisms that allow for precise adjustment of cooking temperatures without disturbing the coal or food, leading to inconsistent cooking results.
Innovation Solution
A grill apparatus with a rotatable shaft and tether system that allows the coal grate to be raised and lowered incrementally, maintaining a consistent heat source by adjusting the distance between the coal and food, while minimizing smoke, ash, and sparks, and enabling one-handed operation for temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the coal grate is manually moved to adjust temperature, then temperature control is achieved, but the coal or food is disturbed and cooking consistency is lost
Solution Approach 1:
The system separates the temperature control function from the coal and food elements by introducing an independent grate positioning mechanism. The grate is divided into a movable component that can be adjusted without affecting the stationary coal bed or food items, allowing temperature regulation while maintaining cooking consistency.
Solution Approach 2:
A tether or cable system acts as an intermediary mechanism between the user's manual input and the grate position. This intermediary allows incremental adjustment of the grate height without requiring direct contact with or movement of the coal or food, thus controlling temperature while preserving cooking consistency.
2Measurement precision
If the grate is adjusted frequently for temperature control, then temperature precision is improved, but time is lost and operation complexity increases
Solution Approach 1:
The grate positioning system transitions from static to dynamic adjustment, allowing the grate to be moved incrementally to precise positions as needed. The tether mechanism enables smooth, controlled movement that can be stopped at any point, providing precise temperature control without requiring frequent or lengthy adjustments.
Solution Approach 2:
The system changes the physical parameter of grate height to control temperature precision. By allowing continuous adjustment of this single parameter through the tether mechanism, the system achieves precise temperature control in a time-efficient manner without altering other cooking parameters.
3Measurement precision
If a complex temperature control mechanism is added, then temperature control precision is improved, but device complexity increases
Solution Approach 1:
The tether system is designed to be self-contained and self-operating, requiring no external power source or complex control systems. The user simply pulls or releases the tether to adjust the grate position, and the mechanism self-regulates through friction or mechanical stops, achieving precise temperature control with minimal complexity.
Solution Approach 2:
The system uses simple, inexpensive mechanical components such as tethers, pulleys, or cables that can be easily replaced if needed. These basic elements provide effective temperature control precision without the need for expensive, complex electronic or mechanical control systems.
Data Source
AI summary
A grill apparatus that raises and lowers a coal grate to and away from a food grill. The grill apparatus includes an oven having a bottom oven portion in the shape of an upright bowl, a top oven portion in the shape of an inverted bowl, and a middle portion in the shape of a cylinder. A cranking of a handle outside of the oven rotates a shaft running through the oven. The shaft spools up and spools out a tether engaged to the coal grate to draw a heat source on the coal grate to and away from food items on the food grill.