Packable modular combustion grill
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Solution Overview
Problem
Conventional grills face issues with portability, poor combustion performance, short service life, safety risks, contamination, and aesthetic degradation due to design limitations, heat exposure, and inadequate airflow, leading to improper cooking and potential fires.
Innovation Solution
A packable modular combustion grill with a doubled-walled body design, hinged grill grate, ash pan, and fuel packs that include combustible wrappers with instructions and fire lighters, allowing for efficient fuel management and airflow, enhancing portability and cooking performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the grill is designed with a fixed structure and cooking surface at accessible height, then cooking convenience is improved, but portability deteriorates and the grill becomes top-heavy and unstable
Solution Approach 1:
The grill is divided into separate modular components including a collapsible stand with individual legs, a removable cooking surface, and a separable body. This segmentation allows each component to be lightweight and easily transported, while assembling them creates a stable, convenient cooking structure when deployed.
Solution Approach 2:
The grill stand features collapsible legs that can be folded parallel to each other for compact storage and transport. The cooking surface is designed to be removable and reconfigurable, allowing the grill to transition between a compact portable state and an expanded operational state with optimal cooking height and stability.
2Productivity
If the grill materials are exposed to significant heat and weathering, then cooking performance is maintained, but oxidation and warpage occur limiting service life and causing structural failure
Solution Approach 1:
The grill incorporates stainless steel components and heat-resistant coatings on materials exposed to high temperatures. The doubled-walled construction uses materials selected for their resistance to thermal expansion and oxidation, while the collapsible stand employs treated materials that resist weathering and structural degradation from repeated assembly and disassembly.
Solution Approach 2:
The design includes protective coatings and material selections that preemptively resist oxidation and warpage before they occur. The doubled-walled structure provides thermal insulation that protects outer surfaces from extreme heat exposure, preventing premature material degradation and extending the grill's service life.
3Productivity
If the cooking surface is heated to cooking temperatures, then cooking function is enabled, but users cannot remove the cooking surface to access fuel without risk of fire or injury
Solution Approach 1:
The cooking surface is designed as a removable component that can be easily detached from the grill body even when hot, allowing safe access to the fuel chamber. The modular design separates the cooking area from the fuel storage area, enabling users to manage fuel without direct contact with the hot cooking surface through the openable fuel access door.
Solution Approach 2:
The fuel access door serves as an intermediary mechanism that provides safe access to the fuel chamber without requiring removal of the hot cooking surface. Users can open the fuel access door to rearrange coals or check fuel levels while the cooking surface remains in place, eliminating the need to handle both hot surfaces and fuel simultaneously.
4Use of energy by stationary object
If a closed grill design is used, then heat retention is improved, but adequate air flow required for full and even combustion is prevented
Solution Approach 1:
The grill lid incorporates strategically positioned vents that provide localized air intake and exhaust pathways. These vents are designed to optimize airflow patterns that support complete combustion of the fuel while the rest of the lid remains closed to retain heat. The doubled-walled body also includes ventilation apertures that facilitate air circulation without compromising overall heat retention.
Solution Approach 2:
The ventilation system is designed to supply adequate oxygen to the combustion zone, ensuring complete and efficient burning of the fuel. The positioned vents create optimal air flow patterns that enhance combustion performance, allowing the grill to maintain high temperatures with efficient fuel consumption while retaining heat effectively.
5Volume of moving object
If the grill is designed for portability with collapsible components, then storage volume is reduced, but assembly complexity increases
Solution Approach 1:
The grill is divided into clearly defined modular components with standardized connection interfaces. The collapsible stand legs feature simple interlocking mechanisms that require minimal tools for assembly, while the removable cooking surface and other components are designed with intuitive attachment points that reduce assembly complexity despite the modular design.
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 modular design improves airflow and heat distribution, making cooking more efficient and safe, allowing for precise temperature control and easy fuel management, reducing the risk of fires and contamination, while extending the grill's service life and enhancing user experience.
Implementation Method 1
a doubled-walled body design
Implementation Method 2
combustible fuel burning grill stove
Data Source
AI summary
A grill stove includes a kettle, legs, and a lid. The kettle includes an outer wall with a ventilation aperture, an inner wall, and a top collar extending between the inner wall and the outer wall and connecting the top portion of the outer wall to the top portion of the inner wall to form a dual-walled kettle. A base pan may be attached to the outer wall and may form a bottom of the kettle. A nest pan may have an edge and a ventilation aperture. The edge of the nest pan may be attached to the bottom portion of the inner wall and disposed above the base pan. The nest pan and the base pan being spaced apart to form a gap therebetween. The ventilation aperture of the nest pan may be in fluid communication with the ventilation aperture of the outer wall. An ash pan may be removably positionable above the nest pan.