Steam Oven Water Separation for Grease-Free Drainage

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Solution Overview

Problem

Ovens with steam generation face challenges in handling excess water, which often mixes with food drippings, requiring complex drainage systems and potentially necessitating the use of grease traps for separation.

Innovation Solution

An oven design featuring a separate exit flow path for excess water from the steam input arrangement, preventing it from mixing with food drippings by directing unconverted water to a collection trough and then to a distinct exit path, while using a universal drain for all liquid flows, including food drippings, grease, and water.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single drainage system is used for both steam excess water and food drippings, then the drainage system is simpler, but grease traps are required and installation becomes more complex

Engineering Contradiction:
Improvedrainage system complexityVSAvoidinstallation complexity
Core Design Contradiction:
Device complexityVSEase of manufacture

Solution Approach 1:

The drainage system is segmented into two separate flow paths: one for steam excess water and one for food drippings. This segmentation allows each path to be optimized independently, eliminating the need for grease traps while maintaining system simplicity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The excess water from the steam input arrangement is extracted and directed through a separate exit flow path, removing it from the food drippings drainage stream. This extraction eliminates the harmful mixing of water and grease, avoiding the need for grease trap separation

Inventive Principle:
Principle #2Taking out (Extraction)

2Device complexity

If excess water is allowed to mix with food drippings, then the drainage system can be simpler, but grease traps are necessitated for proper separation

Engineering Contradiction:
Improvedrainage system complexityVSAvoidgrease contamination
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The excess water is extracted from the potential mixing zone and directed through a dedicated exit flow path, preventing contact with food drippings and eliminating grease contamination issues

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

A separate exit flow path acts as an intermediary channel that transports excess water independently from the food drippings flow, preventing harmful interactions between water and grease while maintaining efficient drainage

Inventive Principle:
Principle #24Intermediary (Mediator)

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 effectively prevents excess water from mixing with food drippings, simplifying installation and potentially eliminating the need for grease traps, while allowing for efficient water management through recirculation or municipal drainage.

Implementation Method 1

The impingement of the water onto the hot thermal mass causes nearly instantaneous conversion of the water to steam

Methodology Applied
Scientific EffectInstantaneous vaporization: Evaporation

Implementation Method 2

a steam input arrangement within the chamber includes a separate exit flow path for excess water

Methodology Applied
Scientific EffectGravitational flow separation: Gravitation

Data Source

PatentEP3134683B1Oven with steam-water separation and method of using said oven
Publication Date: 2019.01.09 ILLINOIS TOOL WORKS INC
  • EP3134683B1 patent drawingFigure 1
  • EP3134683B1 patent drawingFigure 2
  • EP3134683B1 patent drawingFigure 3

AI summary

An oven includes chamber with a food drippings drain path along which food drippings can flow for removal from the chamber. A steam input arrangement associated with the chamber includes a separate exit flow path for excess water.