Rotary Regenerative Deodorizing Filter for Odor Removal

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Solution Overview

Problem

Existing air cleaners face challenges in maintaining constant deodorizing efficiency due to limitations in regenerative filters, such as decreased adsorption capacity, environmental concerns with ozone usage, and generation of harmful byproducts like ozone during photocatalytic reactions.

Innovation Solution

An air cleaner equipped with a regenerative deodorizing filter that includes a rotary rotor made of high adsorptive materials like zeolite, activated alumina, or activated carbon, and a desorption system using heating or pressure to continuously regenerate the filter, ensuring efficient treatment of offensive odors and volatile organic compounds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a fixed-bed adsorption filter using activated carbon and zeolite is used, then gaseous substances can be adsorbed for purification, but the filter lacks regenerative capacity and has shortened service life

Engineering Contradiction:

Improveservice lifeVSAvoidregenerative capacity

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The patent applies the dynamics principle by transitioning from a static fixed-bed adsorption filter to a dynamic rotary rotor system. The rotary rotor continuously rotates between an adsorption section (exposed to contaminated air) and a desorption section (exposed to heated air), enabling the filter material to be dynamically regenerated in-place without replacement, thus extending service life while maintaining regenerative capacity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements the discarding and recovering principle by separating the adsorption and desorption processes into distinct sections. The rotary rotor brings adsorbed constituents to the desorption section where they are recovered through heating, allowing the filter material to be regenerated and reused continuously rather than discarded after single-use saturation.

Inventive Principle:

Principle #34Discarding and recovering

2Duration of action of stationary object

If an ozone oxidation filter is used, then the filter can be used over a prolonged period of time, but ozone discharged to the atmosphere may cause asthma and allergy

Engineering Contradiction:

Improveservice lifeVSAvoidozone discharge

Core Design Contradiction:

Duration of action of stationary objectVSObject-generated harmful factors

Solution Approach 1:

The patent extracts the harmful ozone generation step from the deodorizing process. Instead of using ozone oxidation that releases harmful ozone to the atmosphere, the system uses physical adsorption followed by thermal desorption to concentrate and treat contaminants, eliminating the harmful byproduct generation while maintaining prolonged service life.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent converts the harmful effect of accumulated adsorbed constituents (which would otherwise require filter replacement) into a beneficial regenerative process. By applying heat in the desorption section, the accumulated contaminants are deliberately released and concentrated for treatment, transforming what would be a harmful saturation state into a controlled regeneration opportunity that extends filter life without ozone discharge.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Reliability

If a photocatalytic filter is used, then detrimental constituents can be treated, but the reaction rate is decreased and accessory detrimental constituents such as ozone are generated

Engineering Contradiction:

Improvedeodorizing efficiencyVSAvoidaccessory detrimental constituents

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the chemical photocatalytic oxidation mechanism with a physical adsorption-desorption system. Instead of relying on photocatalyst reactions that generate harmful byproducts like ozone, the system uses physical adsorption in the rotary rotor followed by thermal desorption, eliminating accessory detrimental constituents while maintaining deodorizing efficiency through a different physical mechanism.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 regenerative deodorizing filter maintains consistent deodorizing efficiency over time, reduces environmental impact, and prevents the generation of harmful byproducts, extending the filter's service life and improving air quality.

Implementation Method 1

a regenerative deodorizing filter to adsorb gaseous substances such as offensive odors, volatile organic compounds and detrimental gas contained in the air introduced therein for purification and treatment

Methodology Applied

Scientific EffectAdsorption: Adsorption

Implementation Method 2

desorption means to desorb and treat the gaseous substances adsorbed on the regenerative deodorizing filter so that the regenerative deodorizing filter is continuously regenerated

Methodology Applied

Scientific EffectDesorption: Desorption

Data Source

PatentUS8366803B2Air cleaner having regenerative filter, and method for regenerative of air cleaner filter

Publication Date: 2013.02.05 ENBION

AI summary

The invention relates to an air cleaner, and more particularly to an air cleaner which includes a regenerative deodorizing filter to purify and treat gaseous substances contained in air, thus enabling efficient regeneration of the regenerative deodorizing filter, and a method of regenerating the filter of the air cleaner.