Movable Dry Filter Module Sealed Airflow in Spray Booths

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Solution Overview

Problem

Dry-filter spray booths face limitations such as lower paint transfer efficiency, higher VOC emissions, and inconvenient filter replacement processes, which hinder their use in applications with substantial paint usage and increase operational costs.

Innovation Solution

The design of a movable dry filter module with a cart system that allows for horizontal filter media orientation, sealed airflow pathways, and easy filter replacement, reducing exposure to contaminants and minimizing downtime during filter changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If dry filters are used to capture oversprayed paint, then simplicity and reduced initial investment are achieved, but VOC emissions increase and paint transfer efficiency decreases

Engineering Contradiction:

ImprovesimplicityVSAvoidVOC emissions

Core Design Contradiction:

Ease of manufactureVSObject-generated harmful factors

Solution Approach 1:

The filtration system is divided into multiple stages with different filter media (pre-filter, main filter, post-filter) that can be independently selected and replaced. This segmentation allows optimization of each stage for specific functions while maintaining overall system simplicity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system allows changing filter media parameters (type, density, depth) based on paint viscosity, spray pattern, and operational requirements. This enables adjustment of VOC capture efficiency without compromising the simplicity of the dry-filter configuration.

Inventive Principle:

Principle #35Parameter changes

2Quantity of substance

If dry filters are used instead of water wash filters, then moisture addition to exhaust air is eliminated, but filter replacement becomes time-consuming and productivity decreases

Engineering Contradiction:

Improvemoisture in exhaust airVSAvoidfilter replacement time

Core Design Contradiction:

Quantity of substanceVSLoss of time

Solution Approach 1:

Filter media is pre-loaded into removable housings before installation in the spray booth. This preliminary preparation allows for quick replacement without time-consuming on-site assembly, reducing downtime while maintaining the moisture-free exhaust advantage.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The filter system incorporates movable and removable components that can be quickly exchanged during operation or with minimal interruption. This dynamic design transforms the static filter replacement process into a rapid operational change, reducing productivity loss.

Inventive Principle:

Principle #15Dynamics

3Volume of moving object

If filter media is oriented vertically, then space utilization is improved, but filter loading and pressure drop characteristics worsen

Engineering Contradiction:

Improvespace utilizationVSAvoidpressure drop

Core Design Contradiction:

Volume of moving objectVSStress or pressure

Solution Approach 1:

The filter housings and media arrangements are designed with asymmetric configurations that optimize airflow patterns. This asymmetric design allows vertical orientation for space efficiency while incorporating features (such as airflow channels and media arrangement) that maintain acceptable pressure drop characteristics.

Inventive Principle:

Principle #4Asymmetry

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 enhances filter performance, reduces VOC emissions, and streamlines the filter replacement process, improving productivity and reducing operational costs by maintaining air quality and efficiency during paint spraying operations.

Implementation Method 1

at least one filter media element arranged within the housing and positioned between the housing inlet and the housing outlet for filtering the air stream

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Implementation Method 2

at least one seal provided around the one or more surfaces for sealing between the housing inlet and the under section inlet and between the housing outlet and the under section outlet

Methodology Applied

Scientific EffectSealing: Physical Containment

Data Source

PatentUS20230321682A1Dry filter module for use in spray booth

Publication Date: 2023.10.12 GIFFIN INC

AI summary

A dry filter module adapted for use with a paint spray booth having an under section inlet for conducting a flow of contaminated air and an under section outlet for conducting a flow of filtered air includes at least one movable cart formed with a housing having one or more surfaces for providing a housing inlet and a housing outlet, at least one filter media element arranged within the housing, and at least one seal provided around the one or more surfaces for sealing between the housing inlet and the under section inlet and also between the housing outlet and the under section outlet. The movable cart is operated to move for making contact with the at least one seal between the housing and the spray booth such that the housing of the movable cart and the spray booth are connected and sealed to each other.