Longitudinal burn pot assembly and improved air flow system
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Solution Overview
Problem
Pellet grills and smokers often face challenges in evenly distributing heat and smoke throughout the cook chamber due to the size and location of the burn pot assembly, leading to inconsistent cooking results.
Innovation Solution
The implementation of a burn pot assembly with dual air supply systems, including a first air supply system that heats air in a burn chamber and a second air supply system that distributes air through outlet manifolds to ensure even heat distribution across the cooking chamber, utilizing blowers and ducts to enhance airflow and heat circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single burn pot assembly is used at the bottom center, then the structure is simple, but heat and smoke distribution becomes uneven
Solution Approach 1:
The burn pot assembly is divided into multiple burn chambers (first burn chamber and second burn chamber) arranged longitudinally. Each burn chamber has its own air supply system with blowers and ducts, allowing independent control of heat generation in different zones. This segmentation enables even heat distribution across the cooking chamber while maintaining a manageable structural complexity through modular design.
Solution Approach 2:
Different regions of the burn pot assembly are provided with different air supply characteristics. The first air supply system serves the first burn chamber while the second air supply system serves the second burn chamber. Each region can be independently controlled to achieve optimal local heat distribution, resulting in overall uniform heat across the cooking chamber.
2Device complexity
If air is supplied only to the burn chamber, then the air supply system is simple, but heat circulation and distribution efficiency is poor
Solution Approach 1:
Air is pre-heated in dedicated heating manifolds before being supplied to the burn chambers. The first heating manifold pre-heats air for the first burn chamber, and the second heating manifold pre-heats air for the second burn chamber. This preliminary heating action improves the overall heat circulation efficiency by reducing the energy required in the burn chambers while adding only moderate complexity to the air supply system.
Solution Approach 2:
Heating manifolds and ducts are introduced as intermediary components between the air supply sources and the burn chambers. These intermediaries facilitate efficient heat transfer and circulation by directing pre-heated air to the appropriate burn chambers, improving heat circulation efficiency without significantly complicating the overall system architecture.
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
This design ensures more uniform heat distribution and cooking performance by using blowers and ducts to circulate air and heat evenly throughout the cooking chamber, addressing the inconsistency issues of traditional pellet grills and smokers.
Implementation Method 1
a first blower causes air to enter a first duct via a first air inlet of the first blower. The air may then be distributed into a heating manifold that heats the air, and distributes the heated air into the burn chamber
Implementation Method 2
a burn chamber disposed in the main body and extending longitudinally between the first and second ends
Implementation Method 3
The air may then be distributed into a heating manifold that heats the air, and distributes the heated air into the burn chamber
Data Source
AI summary
An appliance includes a burn pot assembly and air distribution ducts that distribute air into a burn chamber of the burn pot assembly, and distribute heated air to a cooking chamber of the appliance. A first air supply system may distribute air into the burn chamber, and a second air supply system may distribute heated air through one or more outlet manifolds towards the cooking chamber.