External Deodorizing Filter Layout to Prevent Disposer Condensation

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Solution Overview

Problem

Existing food waste disposers experience condensation issues due to temperature differences between the disposer and the outside, leading to moisture accumulation and malfunction, particularly affecting the fan motor and activated carbon filter.

Innovation Solution

A deodorizing filter with a housing, including a filter front part, rear part made of expanded polypropylene for insulation, and a divider rib part to create separate upper and lower spaces, facilitating air circulation and preventing condensation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the filter is placed close to the outside to enable external attachment, then installation flexibility is improved, but condensation occurs on the activated carbon due to temperature difference

Engineering Contradiction:

Improveinstallation flexibilityVSAvoidcondensation

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

An insulation layer is introduced as an intermediary between the filter housing and the activated carbon filter. This insulation layer mediates the thermal interaction, preventing direct heat transfer from the external environment to the activated carbon, thereby preventing condensation while maintaining the external attachment configuration

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The filter housing is constructed using composite material structure combining metal or plastic housing with an insulation layer. This composite structure provides both the mechanical strength needed for external attachment and the thermal insulation properties to prevent condensation on the activated carbon

Inventive Principle:

Principle #40Composite materials

2Productivity

If the fan motor is placed near the activated carbon to facilitate air discharge, then air discharge efficiency is improved, but moisture condenses easily in the activated carbon near the fan motor

Engineering Contradiction:

Improveair discharge efficiencyVSAvoidmoisture condensation

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The insulation layer serves as a thermal intermediary between the fan motor assembly and the activated carbon filter. It allows the fan motor to be positioned near the activated carbon for efficient air discharge while preventing thermal conditions that would cause moisture condensation in the activated carbon

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If the filter housing is exposed to external temperature, then external attachment function is achieved, but temperature difference causes condensation during winter

Engineering Contradiction:

Improveexternal attachment functionVSAvoidtemperature difference

Core Design Contradiction:

Adaptability or versatilityVSTemperature

Solution Approach 1:

The filter housing employs a composite material structure with an insulation layer that reduces thermal conductivity. This allows the housing to be externally attached and exposed to external temperature while minimizing the temperature difference transmission to internal components, preventing condensation during winter

Inventive Principle:

Principle #40Composite materials

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

Prevents condensation by using eco-friendly expanded polypropylene insulation and a divider rib part to maintain air circulation, ensuring effective deodorization and reducing maintenance needs.

Implementation Method 1

a rear body (210) that is installed to face the front body (110) to form an internal space (S)

Methodology Applied

Scientific EffectThermal insulation: Thermal Insulation

Implementation Method 2

a deodorizing filter formed of activated carbon, which has a function of adsorbing and removing the odor by activated carbon

Methodology Applied

Scientific EffectAdsorption: Adsorption

Data Source

PatentUS20250345740A1Deodorizing filter for external attachment of food waste disposer to prevent condensation

Publication Date: 2025.11.13 HAN MI FLEXIBLE

AI summary

The present disclosure relates to a deodorizing filter for external attachment of a food waste disposer, including a housing, a storage tank, and a fan motor, wherein the deodorizing filter includes a filter front part including a front body, an air intake part, and an exhaust part, a filter rear part including a rear body, a divider rib part dividing the internal space between the front body and the rear body into an upper storage space and a lower exhaust space, and activated carbon stored in the upper storage space. Accordingly, by applying expanded polypropylene to the filter rear part exposed to the outside, and having the divider rib part to provide the lower exhaust space in order to facilitate air circulation of the fan motor, it is 10 possible to prevent condensation from occurring even in temperature changes between a food waste disposer and the outside.