Sales Counter Humidifier Layout for Cleanable Steam Lines

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Solution Overview

Problem

Existing refrigerated counters with humidifiers face issues of unfiltered air being drawn into the steam generator and inaccessible, difficult-to-clean steam supply lines, leading to potential germ and slime formation, compromising hygiene.

Innovation Solution

The steam generator is positioned separately from the display area with a removable, air-permeable cover for the steam outlet and transparent pipes, allowing for easy cleaning and visual inspection, along with pre-filtering the air supply to prevent contamination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the steam supply line is positioned inside the goods display area with pipes or coils, then the steam can be effectively distributed throughout the display area, but the pipes become inaccessible for cleaning and hygiene deteriorates

Engineering Contradiction:
Improvesteam distribution effectivenessVSAvoidcleaning accessibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The steam supply system is segmented into a fixed steam generator and a removable steam outlet cover. The cover can be detached to provide access to the steam supply line for cleaning, while the generator remains stationary. This segmentation allows maintenance without compromising the overall system functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The steam outlet cover is designed to be movable (removable or pivoting) rather than fixed, enabling dynamic access to the steam supply line for cleaning purposes while maintaining steam distribution functionality when in place.

Inventive Principle:
Principle #15Dynamics

2Device complexity

If the air intake is directly connected to the steam generator without filters, then the device complexity is reduced, but contamination increases leading to germ and slime formation

Engineering Contradiction:
Improveair filtration systemVSAvoidair contamination
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

Air filters are installed in the air intake path before air enters the steam generator. This preliminary filtration action removes contaminants from the air supply, preventing germ and slime formation in the steam system while maintaining relatively simple device architecture.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the steam outlet cover is sealed to prevent contamination, then hygiene is improved, but steam penetration into the display area is blocked

Engineering Contradiction:
Improvehygiene protectionVSAvoidsteam penetration efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The steam outlet cover incorporates perforations or porous material that allows steam to pass through while providing a barrier against larger contaminants. This enables the cover to maintain hygiene protection without blocking steam penetration into the goods display area.

Inventive Principle:
Principle #31Porous materials

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 enhances hygiene by ensuring clean steam supply lines and prevents contamination, maintaining the freshness of stored produce while allowing for effective cleaning and visual monitoring of the steam system.

Implementation Method 1

a steam generator (9) for the fresh goods humidifier... convey the cold vapor into the interior of the merchandise display area

Methodology Applied
Scientific EffectEvaporation: Evaporation

Implementation Method 2

The vapor permeability of the cover means that the moist mist or steam can still penetrate into the merchandise display area

Methodology Applied
Scientific EffectPermeation: Permeation

Data Source

PatentEP1889558B1Humidifying device for a sales counter
Publication Date: 2012.01.18 HERTEL GUNTHER
  • EP1889558B1 patent drawingFigure 1
  • EP1889558B1 patent drawingFigure 2
  • EP1889558B1 patent drawingFigure 3

AI summary

The device comprises a steam generator (9) arranged separately opposite the goods display area and a steam discharge (13) opened in the goods display area. A steam supply line (12) is connected with the steam generator and steam discharge. A removable and steam permeable cover of the steam discharge is provided.