Self-Cleaning Solid Fuel Grill Using Vacuum Evacuation for Ash Removal
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Solution Overview
Problem
Existing solid fuel grills face challenges in efficiently and conveniently removing combustion byproducts such as ash, soot, and creosote, which accumulate in the grilling cavity, affecting performance and flavor, and require cumbersome manual cleaning that often leads to contamination and improper reassembly.
Innovation Solution
A self-cleaning solid fuel grill design with a grilling cavity, evacuation cavity, and passageways that allow combustion byproducts to be drawn out using a vacuum, along with a screen to prevent byproducts from entering the cooking chamber, and features like ventilation holes and funnels to facilitate easy cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual cleaning is used to remove combustion byproducts, then the grill can be cleaned, but the process is cumbersome, time-consuming, and leads to contamination
Solution Approach 1:
The system enables self-service cleaning by using the grill's own blower to automatically draw combustion byproducts through the firepot and into a collection container, eliminating the need for manual disassembly and cleaning operations
Solution Approach 2:
The invention uses pneumatic pressure differentials created by the blower to automatically transport ash and combustion byproducts from the firepot through passageways into a collection container, replacing manual cleaning tools and methods
2Ease of operation
If the grill is disassembled for cleaning, then combustion byproducts can be accessed, but reassembly is complicated and may lead to improper function
Solution Approach 1:
The automatic cleaning system allows the grill to clean itself without disassembly, maintaining the integrity of the assembly and ensuring proper function while still accessing the firepot for byproduct removal
Solution Approach 2:
The system performs cleaning actions automatically during or after normal operation without requiring preliminary disassembly, thus avoiding reassembly errors while still achieving thorough cleaning
3Productivity
If manual cleaning tools are used, then combustion byproducts can be removed, but ash and soot contaminate surrounding surfaces
Solution Approach 1:
The pneumatic system uses controlled air flow to transport combustion byproducts through enclosed passageways directly into a collection container, preventing ash and soot from contacting and contaminating surrounding surfaces
Solution Approach 2:
The system introduces air flow as an intermediary medium to carry combustion byproducts away from the firepot and into the collection container, eliminating direct contact between cleaning tools and byproducts that causes contamination
4Duration of action of stationary object
If cleaning is delayed, then the grill can operate longer, but combustion byproducts accumulate and decrease combustion efficiency
Solution Approach 1:
The system enables continuous or frequent cleaning operations without interrupting or significantly reducing grill operation, maintaining high combustion efficiency by regularly removing combustion byproducts that would otherwise accumulate and reduce performance
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 design enables efficient, mess-free, and automated cleaning of combustion byproducts, maintaining grill performance and flavor quality without manual disassembly, reducing the effort and risk of contamination.
Implementation Method 1
a vacuum within an evacuation cavity disposed beneath the grilling cavity. A second step includes drawing combustion byproducts down from the grilling cavity into the evacuation cavity
Data Source
AI summary
A self-cleaning solid fuel grilling device comprises a grilling cavity and a firepot disposed within the grilling cavity. In addition, the embodiment includes an evacuation cavity disposed beneath the firepot. The evacuation cavity is in communication with the grilling cavity.