Regenerative Pleated Filter Media for Bakery Dust Filtration

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Solution Overview

Problem

Existing filtration systems in the baking industry face inefficiencies in dust collection and maintenance, with cloth bag filters prone to dust leakage and pleated cartridge filters generating waste due to compacted debris, leading to reduced filtration efficiency and increased maintenance costs.

Innovation Solution

A filtration system with a regenerative air pulse mechanism that reversibly moves pleated filter media to dislodge compacted debris, utilizing a dual-cage structure to maximize surface area and prevent re-deposition of particles, allowing for efficient dry cleaning and extended filter life.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If high pressure air pulses are used to clean filter bags, then dust is dislodged from the filter medium, but the blown off debris deposits on adjacent filters reducing their filtering ability

Engineering Contradiction:
Improvecleaning efficiencyVSAvoidfiltration efficiency of adjacent filters
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The filter system is divided into multiple independent cylindrical sleeves or bags, each capable of being cleaned separately. The cleaning mechanism targets individual filters rather than affecting the entire filter assembly, preventing debris from one filter from contaminating adjacent filters during the cleaning process.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A removable collection container is introduced as an intermediary component to capture and contain the dust and debris dislodged during cleaning. This intermediary prevents the blown-off debris from settling on adjacent filters and maintains their filtration efficiency during the cleaning operation.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Area of stationary object

If pleated cartridge filters are used to maximize surface area, then filtration capacity increases, but compacted debris cannot be easily removed and creates paste or varnish

Engineering Contradiction:
Improvefiltration surface areaVSAvoidcleaning accessibility
Core Design Contradiction:
Area of stationary objectVSEase of operation

Solution Approach 1:

The filter medium is designed with dynamic flexibility, allowing it to be reversibly deformed from a compressed pleated state during filtration to an expanded state during cleaning. This dynamic behavior enables easy access to compacted debris in the pleat vertices, allowing thorough cleaning without creating paste or varnish.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The physical state of the filter medium is changed between operation and cleaning modes. During filtration, the medium is in a compressed state to maximize surface area. During cleaning, the medium is expanded or deformed to allow access to compacted debris, then returned to its original state. This parameter change enables effective cleaning while maintaining high filtration capacity.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If filter media is tightly sealed to prevent dust leakage, then filtration effectiveness improves, but cleaning access to compacted material is reduced

Engineering Contradiction:
Improvedust containmentVSAvoidcleaning accessibility
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The filter medium employs dynamic deformation capabilities, transitioning from a tightly sealed compressed state during filtration to an expanded or opened state during cleaning. This allows the medium to maintain dust containment effectiveness during operation while providing access to compacted debris for thorough cleaning.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The filter system undergoes periodic cleaning cycles where the filter medium is temporarily opened or deformed to remove compacted debris, then returned to its sealed state for continued filtration operation. This periodic action maintains both dust containment effectiveness and cleaning accessibility.

Inventive Principle:
Principle #19Periodic action

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 system effectively extends the life of filter media, enhances filtration efficiency, and reduces maintenance costs by allowing for easy regeneration and cleaning of filters without creating paste or varnish, thereby improving dust and debris removal in commercial bakery environments.

Implementation Method 1

A filtration system with a regenerative air pulse mechanism that reversibly moves pleated filter media to dislodge compacted debris

Methodology Applied
Scientific EffectAir pulse:

Implementation Method 2

utilizing a dual-cage structure to maximize surface area and prevent re-deposition of particles

Methodology Applied
Scientific EffectAir flow reversal:

Implementation Method 3

pleated cartridge filters that had a substantial amount of surface due to the pleated use of a fibrous or cellulose filter element medium

Methodology Applied
Scientific EffectPleating:

Implementation Method 4

chamber separation to spread air flows

Methodology Applied
Scientific EffectChamber separation:

Data Source

PatentUS20240316486A1Device and method for enhanced filtration for bakery dust and dried glaze coating
Publication Date: 2024.09.26 SCHMIDT NORMAN G
  • US20240316486A1 patent drawing
  • US20240316486A1 patent drawing
  • US20240316486A1 patent drawing

AI summary

An embodiment is designed for and provided in a large commercial bakery setting which can typically make roll products such as but not limited to hamburger buns to filter air from a cleaning process. The invention can include for example one or more cage elements with a filter material that during operations takes a pleated shape upon the cage elements so as to filter particulate from the air. During a regenerative process the filter media is retained in such a way that it can easily reverse the pleats and force the removal of any compacted filtrate or debris from the pleats and any adhered materials on the filter media. The re-released materials are further collected in a fashion similar to the filtered material in a collection area below the filter assemblies. The invention entails the removal of these contaminants and their excess from pans and the like and filtration of the air and area around the cleaning of the pans from these particulates. Finally, a process employing a more efficient filtration system, providing a regenerative cycle, with a separated assembly divided design maximizing surface area for filtration and modulating the air to remove debris through the chamber separation and to spread air flows, and providing easy access for cleaning and maintenance of the filtration media is described.