Multi-Zone Oven Side-Directed Drainage for Humidity Isolation
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Solution Overview
Problem
Multi-zone ovens face challenges in handling condensed moisture from steam-assisted cooking, particularly in stacked compartments, which prevents direct bottom wall drains and compromises humidity isolation, making it difficult to maintain separate steam and no steam cooking zones.
Innovation Solution
A multi-zone oven design with side-directed drain systems and thermal barriers that allow independent temperature and humidity control in each compartment, using a common drain receptacle with backflow limiters to manage moisture without breaching the seal or promoting steam transfer between compartments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If direct bottom wall drains are used in stacked compartments, then moisture extraction is simplified, but humidity isolation between compartments is compromised and steam transfer occurs
Solution Approach 1:
The drain system is segmented into lateral drain ports in upper compartments and a separate common drain receptacle in the lower compartment. This segmentation allows moisture extraction from upper compartments without creating a direct vertical path through the thermal barrier, thus maintaining humidity isolation while achieving effective drainage.
Solution Approach 2:
A common drain receptacle acts as an intermediary element that receives moisture from multiple upper compartments laterally. This mediator allows moisture extraction without requiring vertical penetration through thermal barriers, preserving the integrity of humidity isolation between compartments.
2Ease of operation
If drain pipe passes through lower compartments to extract moisture, then drainage is achieved, but excess drain pipe heating occurs and compartment seal is breached
Solution Approach 1:
The drainage approach transitions from a vertical dimension (drain pipe passing through lower compartments) to a lateral dimension (drain ports in side walls of upper compartments). This dimensional change allows moisture extraction without the drain system being exposed to high temperatures in the lower compartments, eliminating excessive heat transfer while maintaining effective drainage.
3Reliability
If thermal barriers are fixed to maintain humidity isolation, then steam transfer is prevented, but compartment size adjustment is limited
Solution Approach 1:
The thermal barriers are designed to be movable rather than fixed, enabling dynamic adjustment of compartment sizes. The lateral drain port configuration ensures that humidity isolation is maintained through the movable barriers, while the barriers can be repositioned to accommodate different cooking requirements and compartment size needs.
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 solution effectively extracts cavity moisture without reducing lower compartment volume, maintains humidity isolation, and accommodates changing compartment sizes, enabling efficient steam-assisted cooking while preventing steam transfer between zones.
Implementation Method 1
A drain port extends laterally through a vertical wall of each of the at least one upper cooking cavity to conduct liquid received at an upper surface of the thermal barrier to the drain port
Implementation Method 2
The drain ports may communicate with the common drain receptacle through respective backflow limiters blocking conduction of steam between the cooking cavities through the drain ports
Implementation Method 3
horizontally extending thermal barriers into multiple cooking cavities
Data Source
AI summary
A multi-compartment oven provides a side directed drainage system permitting moisture removal from the cavities without interference with the integrity of lower cavity volumes and permitting removability of cavity dividers.