Steam Cooker Drain Flushing for Fat and Oil Buildup

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Solution Overview

Problem

Steam cookers face inefficiencies in cleaning and maintenance due to the buildup of fats and oils in the drain lines, which reduces the effectiveness of the drainage system and requires manual intervention for cleaning.

Innovation Solution

A steam flushing system that uses steam from a generator to periodically flush debris, including fats and oils, through the drain lines, utilizing a dedicated steam flush line connected to the steam generator and controlled by a valve to liquefy and remove solidified residues, integrated with the existing steam cooking system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual cleaning intervention is used to remove fats and oils from drain lines, then cleaning effectiveness is improved, but operational productivity deteriorates due to time loss and labor requirements

Engineering Contradiction:
Improvedrainage system effectivenessVSAvoidoperational productivity
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The steam cooking system automatically flushes its own drain lines using steam generated during normal cooking operations. The system uses excess steam from the cooking chamber to periodically flush the drain lines, eliminating the need for manual intervention while maintaining drainage effectiveness. This self-service mechanism resolves the contradiction by making the system self-maintaining without reducing productivity.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system continuously generates steam during cooking operations and utilizes this continuous steam production to periodically flush the drain lines. By integrating the cleaning function into the ongoing cooking process, the system maintains continuous useful action without interrupting productivity or requiring separate manual cleaning operations.

Inventive Principle:
Principle #20Continuity of useful action

2Productivity

If a dedicated steam flush line is added to the system, then drainage efficiency is improved through automated cleaning, but device complexity increases

Engineering Contradiction:
Improvedrainage efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The steam generator serves dual functions: producing steam for cooking operations and generating steam for flushing the drain lines. By making the steam generator universal and multi-functional, the system improves drainage efficiency without adding a separate steam generation system, thereby limiting the increase in device complexity to only the necessary piping and control components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The steam flushing system merges the cleaning function with the existing steam cooking system by using the same steam generator and integrating the flush line into the existing infrastructure. This merging approach improves drainage efficiency while minimizing added complexity by combining functions rather than creating entirely separate systems.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If steam is delivered to drain path during cooking operation, then cleaning effectiveness is improved, but cooking operation is disrupted

Engineering Contradiction:
Improvedrain line cleanlinessVSAvoidcooking operation continuity
Core Design Contradiction:
ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The system implements periodic steam flushing of the drain lines rather than continuous flushing. Steam is delivered to the drain path at scheduled intervals during cooking operations, maintaining drain line cleanliness while minimizing disruption to cooking. This periodic action allows the cooking operation to continue uninterrupted between flush cycles.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system performs steam flushing as a preliminary maintenance action during scheduled intervals, preventing debris buildup before it significantly impacts drainage effectiveness. By taking preliminary cleaning action periodically, the system maintains drain line reliability without requiring continuous intervention that would disrupt cooking operations.

Inventive Principle:
Principle #10Preliminary action

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 steam flushing system effectively cleans the drain lines by liquefying and removing debris, enhancing the drainage efficiency and reducing maintenance needs, while being automated for improved operational productivity.

Implementation Method 1

A steam generator unit heats water to generate steam

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

A steam generator unit heats water to generate steam

Methodology Applied
Scientific EffectPhase change: Phase Change

Implementation Method 3

Steam is delivered from the steam generator to the drain path via a second steam path during a steam flushing operation

Methodology Applied
Scientific EffectHeating: Heating

Data Source

PatentEP2194791B1Steam cooking apparatus with steam flushing system
Publication Date: 2011.05.18 PREMARK FEG LLC
  • EP2194791B1 patent drawingFigure 1
  • EP2194791B1 patent drawingFigure 2

AI summary

A steam cooking system includes a steam cooking chamber (14) having an access door (16) and a drain (40a, 40b) for draining condensate from the steam cooking chamber along a drain path. A steam generator unit (12) heats water to generate steam. The steam generator unit is connected for delivery of steam from the steam generator to the steam cooking chamber via a first steam path (36a, 36b) during a cooking operation. The steam generator unit is also connected for delivery of steam from the steam generator to the drain path via a second steam path (50) during a steam flushing operation.