Method and apparatus for providing test ports

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Solution Overview

Problem

Existing clean room ceiling filter systems require additional centerboards that increase manufacturing costs, assembly labor, and material waste, while also compromising airflow uniformity and visual appearance.

Innovation Solution

A filter apparatus with a test port member positioned along the filter media's periphery, allowing for uninterrupted airflow and eliminating the need for separate filter media packs and scrims, thereby reducing assembly labor and material costs while enhancing airflow uniformity and visual integration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a centerboard with test ports is used in the filter, then test access is provided, but manufacturing cost and assembly labor increase

Engineering Contradiction:
Improvetest accessVSAvoidmanufacturing cost and assembly labor
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The test port is integrated directly into the filter media pack structure, combining the filtration function and test access function into a single unified component. This eliminates the need for a separate centerboard assembly, thereby reducing manufacturing cost and assembly labor while maintaining test access capability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The filter media pack is designed to serve multiple functions: it provides filtration and simultaneously provides test access through integrated test ports. This multi-functionality eliminates the need for separate dedicated test access components, reducing overall system complexity and manufacturing cost.

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

2Ease of operation

If a centerboard with test ports is used in the filter, then test access is provided, but assembly labor increases

Engineering Contradiction:
Improvetest accessVSAvoidassembly labor
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The test port structure is merged with the filter media pack, creating a single integrated component that requires only one assembly operation instead of multiple separate assemblies. This simplifies the assembly process and reduces labor requirements.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If a centerboard is used in the filter, then test ports are provided, but airflow uniformity decreases

Engineering Contradiction:
Improvetest accessVSAvoidairflow uniformity
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

By integrating the test ports directly into the filter media pack structure, the design eliminates the centerboard that disrupted airflow. The test ports are formed as part of the media pack itself, allowing uniform airflow to pass through without obstruction while still providing test access capability.

Inventive Principle:
Principle #5Merging (Combining)

4Ease of operation

If a centerboard is used in the filter, then test ports are provided, but visual appearance and integration with ceiling deteriorate

Engineering Contradiction:
Improvetest accessVSAvoidvisual appearance and integration
Core Design Contradiction:
Ease of operationVSShape

Solution Approach 1:

The test ports are integrated into the filter media pack structure, eliminating the need for a separate centerboard that protrudes or disrupts the filter's appearance. This integration allows the filter to maintain a uniform, clean appearance that blends seamlessly with the ceiling while still providing test access functionality.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP3749433B1Method and apparatus for providing test ports
Publication Date: 2024.05.15 AMERICAN AIR FILTER CO INC
  • EP3749433B1 patent drawingFigure 1
  • EP3749433B1 patent drawingFigure 2
  • EP3749433B1 patent drawingFigure 3

AI summary

A filter apparatus and method having a test port member (220) in combination with a filter media (40). The test port member may be positioned adjacent the outer periphery of the outer peripheral frame (32) and may be attached to a truncated portion (44) of the filter media. One or more scrim layers (160) may be disposed across one or more sides of the test port member and/or the truncated portion of the filter media. A plug (150) may be inserted into a through port of the test port member.