Soy-Based HVAC Filter Media Using Cold Plasma Treatment

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Solution Overview

Problem

Current HVAC air filters are either expensive and highly effective or cheap with poor filtration efficiency, and most are made from petroleum-based products, posing environmental hazards, with an unmet need for sustainable, affordable, and environmentally friendly materials.

Innovation Solution

A soy-based HVAC air filter using milled whole soybean material and recyclable materials, such as recycled paper, with cold plasma treatment to enhance filtration efficiency and extend product life, offering a cost-effective, high-efficiency, and biodegradable solution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If petroleum-based materials are used for HVAC filters, then filtration effectiveness can be achieved, but environmental hazards increase and sustainability is compromised

Engineering Contradiction:
Improvefiltration effectivenessVSAvoidenvironmental hazards
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the material parameter from petroleum-based to soy-based, transforming the chemical composition while maintaining filtration functionality. This parameter change resolves the contradiction by eliminating environmental hazards associated with petroleum products while preserving filtration effectiveness through the unique properties of soy proteins.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses composite materials combining soy-based proteins with recyclable materials to create a filter media that achieves both effective filtration and environmental sustainability. The composite structure allows the soy proteins to provide filtration effectiveness while the biodegradable and recyclable nature of components eliminates environmental hazards.

Inventive Principle:
Principle #40Composite materials

2Reliability

If high-efficiency filtration materials are used, then filtration effectiveness improves, but manufacturing cost increases

Engineering Contradiction:
Improvefiltration effectivenessVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent employs disposable filter media made from inexpensive soy-based materials and recyclable components. This approach allows the use of cost-effective materials that can be replaced regularly, achieving high filtration effectiveness without the high manufacturing costs of permanent or reusable filter systems.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent changes the material composition parameter to use soy-based proteins and recyclable materials, which are inherently more cost-effective than traditional high-performance filter materials. This parameter change enables high filtration effectiveness to be achieved at lower manufacturing costs.

Inventive Principle:
Principle #35Parameter changes

3Ease of manufacture

If affordable filter materials are used, then manufacturing cost decreases, but filtration efficiency deteriorates

Engineering Contradiction:
Improvemanufacturing costVSAvoidfiltration efficiency
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent changes the material parameter from conventional affordable materials to soy-based proteins, which possess unique properties that provide high filtration efficiency. This parameter change allows affordable manufacturing costs to be maintained while dramatically improving filtration efficiency beyond what traditional affordable materials can achieve.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates composite materials combining soy-based proteins with recyclable materials to achieve a synergistic effect. The soy proteins provide the filtration efficiency typically associated with expensive materials, while the recyclable components maintain cost-effectiveness, resolving the contradiction between affordability and efficiency.

Inventive Principle:
Principle #40Composite materials

4Duration of action of stationary object

If conventional filter materials are used, then product lifespan is maintained, but environmental sustainability is compromised

Engineering Contradiction:
Improveproduct lifespanVSAvoidenvironmental sustainability
Core Design Contradiction:
Duration of action of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent changes the material parameter from conventional non-biodegradable materials to soy-based proteins and recyclable materials. This parameter change enables the filter to maintain its functional lifespan while becoming environmentally sustainable through biodegradation and recyclability, eliminating the harmful effects of persistent waste.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent employs discarding and recovering principles by making the filter media biodegradable and recyclable. After use, the soy-based filter can be composted or recycled, transforming the end-of-life phase from environmental hazard to resource recovery, thus maintaining product lifespan while achieving environmental sustainability.

Inventive Principle:
Principle #34Discarding and recovering

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 soy-based filter outperforms existing HVAC filters by 15% in filtration efficiency, is more environmentally friendly, and significantly cheaper to produce, while being biodegradable and suitable for various industries, including industrial and agricultural air filtration.

Implementation Method 1

the product has experimentally gone through cold plasma treatment, which may extend the life of the product and at the same time allow for an even higher filtration efficiency due to the resultant surface charge held by the soy proteins

Methodology Applied
Scientific EffectCold plasma treatment: Plasma

Data Source

PatentUS12090431B2Soy based filtration system
Publication Date: 2024.09.17 PURDUE RES FOUND

AI summary

The present application relates generally to filter media useful for manufacturing air filters for residential and commercial office's Heating, Ventilation, and Air Conditioning (HVAC), particularly to filters and filter media comprising soybean-based materials. The present invention provides an inexpensive, effective, environmentally friendly, and sustainable media for manufacturing HVAC air filters for residential and commercial buildings.