Cylindrical Oil Catch Filter for Compact Air Separation

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Solution Overview

Problem

Existing oil catch apparatuses do not effectively estimate the amount of oil separated from compressed air, leading to environmental concerns due to improper disposal of collected oil.

Innovation Solution

An oil catch apparatus with a cylindrically wound filter unit made of stacked network stainless and polyester mesh, supported by keep members and a buffer to prevent splashing, along with a transparent tubular member for visual confirmation of oil accumulation, allowing efficient separation and collection of oil within a compact design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a conventional filter structure is used, then the device complexity is low, but the oil separation efficiency and compactness are insufficient

Engineering Contradiction:
Improveoil separation efficiencyVSAvoidfilter structure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The filter is divided into multiple functional segments: a main filter unit with cylindrical winding structure for primary separation, a buffer zone for oil accumulation, and a transparent observation section. This segmentation allows each part to perform its specific function efficiently while maintaining overall compactness.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The filter employs a nested structure where the main filter unit is positioned within the housing, the buffer is integrated around it, and the transparent section is incorporated into the existing structure. This nesting approach maximizes space utilization and achieves compact design without sacrificing separation efficiency.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Quantity of substance

If the filter size is increased to improve oil collection capacity, then the oil separation performance improves, but the device volume increases

Engineering Contradiction:
Improveoil collection capacityVSAvoiddevice volume
Core Design Contradiction:
Quantity of substanceVSVolume of stationary object

Solution Approach 1:

The filter transitions from a conventional planar structure to a three-dimensional cylindrical winding configuration. This dimensional change allows the filter media to be packed more densely and efficiently within the available volume, increasing oil collection capacity without proportionally increasing device volume.

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

Solution Approach 2:

The filter utilizes thin film structures wrapped in a cylindrical configuration, creating a high surface area to volume ratio. This allows maximum oil separation capacity within a compact footprint, as the thin films provide extensive filtering surface without adding significant bulk.

Inventive Principle:
Principle #30Flexible shells and thin films

3Measurement precision

If a transparent observation section is added to monitor oil accumulation, then the measurement capability improves, but the device complexity increases

Engineering Contradiction:
Improveoil accumulation measurementVSAvoidstructure complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The transparent section allows visual monitoring of oil accumulation by observing changes in transparency and color intensity. As oil accumulates in the buffer zone, the visual appearance changes, providing a simple yet effective measurement capability without requiring complex sensors or instrumentation.

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The transparent observation section enables users to self-monitor oil accumulation levels without requiring external measurement devices or complex control systems. The visual indication serves the measurement function directly, eliminating the need for additional complexity while maintaining measurement capability.

Inventive Principle:
Principle #25Self-service

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

Enables accurate estimation and efficient separation and collection of oil, suppressing splashing and enhancing muffling effects, while maintaining a compact and cost-effective design for environmental sustainability.

Implementation Method 1

air flowing into the main filter unit is cleared of impurities upon passing through the main filter unit

Methodology Applied
Scientific EffectPhysical filtration: Filter (physical)

Data Source

PatentEP3225295B1Oil catcher
Publication Date: 2019.04.24 KNORR BREMSE SYSTEME FUER NUTZFAHIZEUGE GMBH
  • EP3225295B1 patent drawingFigure 1
  • EP3225295B1 patent drawingFigure 2
  • EP3225295B1 patent drawingFigure 3

AI summary

Object The invention has for its object to provide an oil catch apparatus that is capable of extracting a sufficient amount of oil albeit being of compact size. Embodiment As shown in Fig. 4, the oil catch apparatus 1 comprises a filter 7 that includes a cylindrically wound main filter unit 71 and a keep member 72 for keeping both ends of the main filter unit 71. An air flowing into the main filter unit 71 is cleared of impurities upon passing through the main filter unit 71, and exits out of the main filter unit 71.