Ionization Apparatus Housing Pollution Detection

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Solution Overview

Problem

The ionization apparatus faces challenges in accurately focusing the ionizer bar, leading to housing surface pollution due to dust and charge influence, which can result in performance degradation or short circuits.

Innovation Solution

A measuring arrangement with at least one measuring electrode is used to detect housing surface pollution by measuring changes in complex resistance between the ion emitting electrode and the measuring electrode, utilizing AC-voltages to assess the buildup, and incorporating a rib-like wall segment for mechanical protection and easy component exchange.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the ionizer bar is not focused exactly onto the target area, then dust particles and housing components are charged and attracted to housing parts, but the ionization apparatus cannot effectively neutralize the target area

Engineering Contradiction:
Improvefocus precision of ionizer barVSAvoidhousing surface pollution
Core Design Contradiction:
Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The patent implements a measuring arrangement with measuring electrodes that detects housing surface pollution before it causes performance degradation or short circuits. By continuously monitoring the complex resistance between ion emitting electrodes and measuring electrodes, the system can detect pollution buildup early and trigger cleaning operations or warnings, preventing the harmful effects of pollution before they occur.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent employs a feedback mechanism where the measuring arrangement continuously monitors the complex resistance between ion emitting electrodes and measuring electrodes. This resistance value serves as feedback about the pollution level on housing surfaces. The system uses this feedback to determine when cleaning is needed, allowing operators to maintain optimal performance by cleaning at appropriate intervals based on actual pollution levels rather than fixed schedules.

Inventive Principle:
Principle #23Feedback

2Reliability

If housing surface pollution builds up, then conducting material layers form on housing surfaces, but this leads to performance decrease and potential short circuits

Engineering Contradiction:
Improveionization apparatus performanceVSAvoidconducting material layer on housing surface
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces mechanical inspection methods with an electrical measurement system. Instead of physically examining housing surfaces for pollution, the system uses measuring electrodes to detect changes in complex resistance electrically. This substitution allows for non-contact, continuous monitoring of pollution levels without mechanical wear or interruption of the ionization process.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces measuring electrodes as intermediary elements that indirectly detect housing surface pollution. These measuring electrodes do not directly contact the polluted surfaces but instead measure the electrical resistance through the housing material, which changes as pollution accumulates. This intermediary approach allows for safe, continuous monitoring without contaminating the housing surfaces further or requiring direct contact with potentially conductive pollution layers.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Difficulty of detecting and measuring

If a measuring arrangement is added to detect housing surface pollution, then pollution detection capability is improved, but device complexity increases

Engineering Contradiction:
Improvehousing surface pollution detectionVSAvoidmeasuring arrangement with electrodes
Core Design Contradiction:
Difficulty of detecting and measuringVSDevice complexity

Solution Approach 1:

The patent implements measuring electrodes that serve multiple functions: they detect housing surface pollution by measuring complex resistance, and they can also be used to monitor the electrical state of the ionization apparatus. This multi-functionality reduces the need for separate dedicated sensing systems, thereby limiting the increase in device complexity while maintaining comprehensive monitoring capability.

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

Solution Approach 2:

The patent combines the measuring arrangement with the existing ionization apparatus structure. The measuring electrodes are integrated into the housing or positioned near existing components, sharing mounting structures and electrical connections. This merging approach allows the pollution detection system to be added without requiring completely separate hardware systems, thereby minimizing the increase in overall device complexity.

Inventive Principle:
Principle #5Merging (Combining)

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 solution allows for reproducible detection of housing surface pollution, reducing performance degradation and enabling cost-effective operation by using existing AC-voltages for both ionization and pollution detection, with detachable components for efficient maintenance.

Implementation Method 1

detecting an indication for housing surface pollution, which detecting is based on a change in complex resistance between at least one said ion emitting electrode and at least one said measuring electrode

Methodology Applied
Scientific EffectElectrical Resistance: Electrical Resistance

Implementation Method 2

a high voltage power supply arrangement with a ion emitting electrode connected thereto. The voltage power supply arrangement supplies a bipolar voltage against ground potential to a so called ionizer bar

Methodology Applied
Scientific EffectIonization: Ionisation

Data Source

PatentEP2775577B1Ionization apparatus
Publication Date: 2017.02.01 ILLINOIS TOOL WORKS INC
  • EP2775577B1 patent drawing
  • EP2775577B1 patent drawing
  • EP2775577B1 patent drawing

AI summary

The invention is directed to a ionization apparatus comprising a housing (1) and at least partly within in the housing (1) a high voltage power supply arrangement (2) with at least one ion emitting electrode (3-5) connected thereto. It is proposed that a measuring arrangement (6) with at least one measuring electrode (7, 8) connected thereto is provided for detecting an indication for housing surface pollution (P) based on a change in complex resistance ( Z ') between at least one said ion emitting electrode (3-5) and at least one said measuring electrode (7, 8).