Vertical Airflow Storage Layout for Clean Room Particle Removal

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Solution Overview

Problem

Existing storage arrangements for sensitive goods, such as perishables and semiconductor products, face challenges in maintaining clean room conditions due to horizontal air flow which can stir up particles, leading to increased air particle density.

Innovation Solution

The storage arrangement features air-permeable storage goods carriers with vertical air flow, where suction and injection openings are strategically placed on the floor and ceiling respectively, allowing air to flow vertically and directing particles towards the floor for easy removal, combined with a conditioning device equipped with a particle filter for air cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If horizontal air flow is used in storage arrangements, then air circulation and ventilation are achieved, but particle density in the air increases due to particles being stirred up

Engineering Contradiction:
Improveair particle densityVSAvoidclean room properties
Core Design Contradiction:
Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent inverts the conventional horizontal air flow direction by implementing vertical air flow from ceiling to floor. This inversion causes particles to settle downward with the air flow rather than being circulated horizontally where they would be stirred up, thereby reducing particle density while maintaining ventilation effectiveness

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The patent transitions from two-dimensional horizontal air flow to three-dimensional vertical air flow by introducing ceiling injection openings and floor suction openings. This dimensional change allows air to flow through the storage space vertically, enabling particles to settle on the floor where they can be removed, thus improving clean room properties

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If injection and suction openings are placed on ceiling and floor respectively, then vertical air flow is achieved for better particle removal, but structural complexity increases

Engineering Contradiction:
Improveparticle removal efficiencyVSAvoidopening configuration
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The storage goods carriers serve multiple functions: they support stored goods, allow vertical air flow through their base structure, and facilitate particle removal. The base of the carriers is designed with features that enable air permeability while maintaining structural integrity, reducing the need for separate complex opening structures

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

Solution Approach 2:

The base of the storage goods carriers is designed to be air-permeable, allowing vertical air flow to pass through. This porous design enables efficient particle removal while maintaining the structural stability of the carriers, avoiding the need for large openings that would compromise structural integrity

Inventive Principle:
Principle #31Porous materials

3Productivity

If storage goods carriers are made air-permeable with openings in the base, then vertical air flow passes through unhindered, but structural stability may be compromised

Engineering Contradiction:
Improveair flow efficiencyVSAvoidcarrier stability
Core Design Contradiction:
ProductivityVSStrength

Solution Approach 1:

The base of the storage goods carriers is designed to be air-permeable, allowing vertical air flow to pass through. This porous design enables efficient particle removal while maintaining the structural integrity of the carriers

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The air permeability feature is applied locally to the base of the storage goods carriers rather than throughout the entire structure. This localized approach allows vertical air flow to pass through where needed while maintaining structural stability in other critical areas of the carrier

Inventive Principle:
Principle #3Local quality

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 significantly reduces air particle density, enhancing clean room suitability by minimizing particle suspension and facilitating efficient dust and particle removal, while maintaining air flow and structural stability.

Implementation Method 1

The conditioning device advantageously has a particle filter which is designed to clean the air. This makes it possible to clean the exhaust air extracted from the storage room from dust and small particles and to keep the air clean.

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Implementation Method 2

This has the advantage that particles, even if they are carried along by the air flow, gradually migrate downwards with the force of gravity and thus collect on the floor or in the extracted air and can thus be removed more easily from the storage room.

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentEP2201304B1Storage configuration having predeterminable storage atmosphere
Publication Date: 2012.05.30 HANEL & CO
  • EP2201304B1 patent drawingFigure 1~2
  • EP2201304B1 patent drawingFigure 3~4
  • EP2201304B1 patent drawingFigure 5~6

AI summary

The invention relates to a storage configuration (10) having a predeterminable storage atmosphere, comprising a storage chamber (12) for receiving a plurality of storage product carriers (14) for storage product (32), which can be delivered to a feeding and removal opening (42) for the storage and removal of the storage product (32) using a transport apparatus (16), and further comprising an air-conditioning apparatus (24), which associated with the storage chamber (12) and exhausts air from the storage chamber (12), treats it, and injects it back into the storage chamber (12) via exhaust and injection openings (18, 20) provided on the storage chamber (12). The exhaust and injection openings (18, 20) are disposed such that the air flows through the storage chamber (12) in the vertical direction.