Deployable Kitchen Exhaust Assembly with Nested Duct Insulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Deployable kitchens face challenges in managing cooking and combustion exhausts efficiently, leading to undesirable emissions and excessive heat within the kitchen environment, particularly in temporary or remote cooking setups.
Innovation Solution
The deployment of an exhaust assembly within the kitchen that includes an exhaust hood, plenum, blower, outer duct, and inner duct, where the cooking exhaust flows through the outer duct and insulates the combustion exhaust within the inner duct, effectively routing and isolating the heat from the cooking and combustion processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If open flame burners are used for cooking, then cooking efficiency is improved, but undesirable emissions and excessive heat are produced within the kitchen environment
Solution Approach 1:
The harmful combustion exhaust is extracted from the kitchen environment through a dedicated exhaust system that includes an exhaust hood, plenum, and ductwork leading to an external exhaust outlet. This separates the harmful byproducts from the cooking space while retaining the benefits of open flame cooking.
Solution Approach 2:
A blower acts as an intermediary device that forces combustion exhaust through the exhaust system. The blower mediates between the combustion source and the external environment, ensuring proper exhaust removal while allowing efficient cooking to continue.
2Object-generated harmful factors
If closed burners are used to reduce emissions, then exhaust management is improved, but system complexity increases due to additional exhaust routing requirements
Solution Approach 1:
The exhaust system merges the collection of combustion exhaust and cooking exhaust into a unified exhaust assembly. The exhaust hood and plenum combine multiple exhaust streams and route them through a single duct system to the external outlet, reducing overall system complexity.
Solution Approach 2:
The exhaust assembly serves multiple functions: it removes combustion exhaust, removes cooking exhaust, and provides thermal insulation. By combining these functions into a single multi-functional system, the patent reduces the number of separate components needed.
3Object-generated harmful factors
If exhaust ducts are routed through the kitchen environment, then exhaust removal is achieved, but heat exposure to personnel increases
Solution Approach 1:
The patent converts the harmful hot combustion exhaust into a beneficial thermal insulation layer. By routing the hot exhaust through an inner duct surrounded by an outer duct containing cooler air, the heat that would otherwise expose personnel is instead used to insulate the exhaust system and reduce thermal transfer to the kitchen environment.
Solution Approach 2:
The exhaust system uses a nested duct configuration where an inner duct containing hot combustion exhaust is placed within an outer duct. This nested structure allows the hot exhaust to be contained and insulated by the surrounding cooler air space, reducing heat exposure to personnel in the kitchen.
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 configuration ensures efficient exhaust management, reducing heat exposure to personnel and minimizing the risk of burns while maintaining a safe and functional cooking environment, even in resource-constrained or temporary settings.
Implementation Method 1
The cooking exhaust flows through the outer duct and insulates the combustion exhaust within the inner duct
Implementation Method 2
the blower is configured to produce a flow of the cooking exhaust through the outer duct
Data Source
AI summary
A deployable kitchen includes an enclosure, a lateral wall, and then exhaust assembly. The exhaust assembly is positioned within the enclosure and is configured to receive a cooking exhaust and a combustion exhaust from an appliance. The exhaust assembly includes an exhaust hood, an exhaust plenum, a blower, an outer duct, and an inner duct. The outer duct is configured to receive the cooking exhaust. The inner duct is positioned within the outer duct and is positioned to receive the combustion exhaust.