Machine Tool Mist Collector With Rotating Filter Cleaning

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Solution Overview

Problem

Mist collectors in machine tools face clogging issues due to the accumulation of fine chips and other debris along with oil mist, which impairs efficient collection.

Innovation Solution

A mist collector design that includes a rotating filter and a fixed nozzle with multiple ejection ports, where the nozzle's position is adjusted to clean the filter by ejecting fluid onto it, preventing clogging and enhancing collection efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a filter is used to collect oil mist, then mist collection efficiency is improved, but fine chips and debris cause filter clogging

Engineering Contradiction:

Improvemist collection efficiencyVSAvoidfilter clogging

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The nozzle ejects fluid onto the filter surface before fine chips and debris can completely clog the filter, performing preventive cleaning action in advance to maintain filter permeability and mist collection efficiency

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses its own fluid supply system to clean the filter, with the nozzle directing fluid onto the filter surface to remove accumulated debris, enabling the mist collector to maintain itself without external intervention

Inventive Principle:

Principle #25Self-service

2Device complexity

If the nozzle position is fixed, then device complexity is reduced, but filter cleaning effectiveness is limited

Engineering Contradiction:

Improvenozzle configuration simplicityVSAvoidfilter cleaning effectiveness

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The nozzle is positioned to move relative to the filter, allowing the ejection port to target different areas of the filter surface during operation, thereby improving cleaning coverage and effectiveness without requiring a complex multi-nozzle system

Inventive Principle:

Principle #15Dynamics

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

The design effectively prevents filter clogging and enhances mist collection by periodically cleaning the filter, ensuring continuous operation and improved performance.

Implementation Method 1

a nozzle 91 that includes a plurality of ejection ports 93 arranged along a radial direction of the predetermined axis... the fluid is ejected from the ejection port toward the filter

Methodology Applied

Scientific EffectFluid spray cleaning: Fluid Spray

Implementation Method 2

a fan 71 that generates an airflow passing through the filter... the mist collector further includes a fan that generates an airflow passing through the filter

Methodology Applied

Scientific EffectForced convection: Forced Convection

Data Source

PatentEP4186581B1Mist collector and machine tool

Publication Date: 2025.10.01 DMG MORI CO LTD

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AI summary

A mist collector includes: a filter (81) that collects mist; a nozzle (91) including an ejection port capable of ejecting a coolant, the nozzle (91) being disposed to cause the ejection port to be opposite to the filter (81); and a motor (61) that causes the filter (81) to move, to cause a position on the filter (81) to which the ejection port is opposite to change.