Charcoal grill system and method for managing temperature within the same charcoal grill system

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Solution Overview

Problem

Traditional charcoal grills require lengthy preparation times and manual monitoring to achieve and maintain the desired cooking temperature, leading to inefficiencies and increased user effort.

Innovation Solution

A charcoal grill system with an integrated igniter, stoke fan, and cooling fan, controlled by a temperature sensor and controller, which automatically ignites and manages charcoal cartridges to rapidly reach and maintain target temperatures, reducing preparation time and user intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If manual charcoal lighting and temperature monitoring is used, then device complexity is reduced, but preparation time increases and user effort increases

Engineering Contradiction:
Improvepreparation timeVSAvoidsystem complexity
Core Design Contradiction:
Loss of timeVSDevice complexity

Solution Approach 1:

The igniter provides preliminary ignition action automatically, eliminating the need for manual lighting. The system pre-configures the ignition sequence and automatically activates the igniter when charcoal is detected, reducing preparation time without requiring user intervention.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The temperature sensor continuously monitors cooking chamber temperature and feeds this information back to the controller. The controller adjusts the stoke fan and cooling fan based on this feedback to maintain target temperature, automatically managing what would otherwise require continuous manual monitoring.

Inventive Principle:
Principle #23Feedback

2Ease of operation

If manual temperature monitoring and adjustment is used, then ease of operation is reduced, but device complexity is minimized

Engineering Contradiction:
Improveoperational simplicityVSAvoidcontrol system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The system performs self-service by automatically monitoring temperature and adjusting fan operations to maintain target temperature. The controller manages the entire temperature control process without user intervention, making operation simple while implementing automated control logic.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The controller serves multiple functions: detecting charcoal presence, controlling the igniter, managing the stoke fan, operating the cooling fan, and maintaining temperature. This multi-functionality consolidates what would otherwise require multiple separate manual operations into a single automated system.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Speed

If rapid heating is achieved through increased airflow, then heating speed improves, but temperature control precision deteriorates

Engineering Contradiction:
Improveheating speedVSAvoidtemperature control precision
Core Design Contradiction:
SpeedVSMeasurement precision

Solution Approach 1:

The system dynamically adjusts airflow through the stoke fan and cooling fan based on real-time temperature conditions. The stoke fan provides high airflow for rapid heating when temperature is below target, while the cooling fan activates when temperature approaches or exceeds target, creating a dynamic response that achieves both rapid heating and precise control.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The controller periodically cycles the stoke fan and cooling fan based on temperature thresholds. This periodic activation allows rapid heating during stoke phases while preventing overheating through cooling phases, achieving both speed and precision through rhythmic control.

Inventive Principle:
Principle #19Periodic action

4Productivity

If automated igniter and fan control is implemented, then productivity increases, but device complexity increases

Engineering Contradiction:
Improvecooking efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system segments control functions into distinct components: charcoal detection, igniter control, stoke fan control, and cooling fan control. Each component handles a specific aspect of the process, making the overall complex system manageable through functional segmentation while achieving high productivity through automation.

Inventive Principle:
Principle #1Segmentation

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 enables rapid heating to cooking temperature, automatic temperature control, and efficient fuel usage, minimizing the risk of overcooking and simplifying charcoal grill operation.

Implementation Method 1

activating the igniter to ignite the charcoal cartridge within the cartridge chamber

Methodology Applied
Scientific EffectCombustion: Combustion

Implementation Method 2

activate the stoke fan to accelerate combustion of the charcoal cartridge during the ignition mode

Methodology Applied
Scientific EffectCombustion: Combustion

Implementation Method 3

activating a cooling fan coupled to the cooking chamber to cool the cooking chamber down to the target grill temperature

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentUS11439276B2Charcoal grill system and method for managing temperature within the same charcoal grill system
Publication Date: 2022.09.13 CHAR BROIL LLC
  • US11439276B2 patent drawing
  • US11439276B2 patent drawing
  • US11439276B2 patent drawing

AI summary

Various charcoal cartridges are provided herein, including a charcoal cartridge having a unitary charcoal slab and a combustible igniter layer extending across the unitary charcoal slab. In some instances, the charcoal cartridge may have a plurality of holes extending through the unitary charcoal slab and/or a flavor layer that includes wood chips.