Microparticle Diffuser Flow Path for Long-Range Low-Noise Dispersion

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Solution Overview

Problem

Conventional microparticle diffusing apparatuses, such as ion diffusing apparatuses in refrigerators, have limited dispersing ability due to short spray travel distances and high noise levels when trying to cover a wide area, leading to inadequate sterilization and increased ozone generation.

Innovation Solution

The apparatus features a wind-blowing path with a gradually changing aspect ratio from the start to the end point, optimized to suppress wind velocity attenuation, allowing microparticles to travel further and disperse uniformly over a wide range, using a rectifier to reduce air disturbance and prevent ion collisions, and an air filter to prevent contamination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the rotation number of the blower is increased to increase the region having high concentration of emitted microparticles, then the dispersing ability of microparticles is improved, but the blowing noise is largely increased

Engineering Contradiction:

Improvedispersing ability of microparticlesVSAvoidblowing noise

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the geometric parameters of the wind-blowing path, specifically the aspect ratio of the cross-section, to optimize microparticle dispersion. By gradually changing the aspect ratio from the start point to the end point within the range of 2 to 20, the patent achieves effective dispersing ability without requiring increased blower rotation speed, thus avoiding noise increase.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If the generating amount of microparticles from the microparticle generating apparatus is increased to increase the region having high concentration of emitted microparticles, then the dispersing ability of microparticles is improved, but the voltage to be applied to the microparticle generating apparatus must be largely increased and ion generating noise is increased

Engineering Contradiction:

Improvedispersing ability of microparticlesVSAvoidion generating noise and ozone generation

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a wind-blowing path as an intermediary medium to transport microparticles from the generating apparatus to the discharge opening. This intermediary system allows effective dispersion through optimized flow path geometry rather than increasing the microparticle generation amount, thereby avoiding the need to increase voltage and reducing ion generating noise and ozone production.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Device complexity

If conventional microparticle diffusing apparatus is used, then the structure is simple, but the spray travel distance of the jet stream is short and the dispersing ability of microparticles is low

Engineering Contradiction:

Improvestructure simplicityVSAvoidspray travel distance

Core Design Contradiction:

Device complexityVSLength of moving object

Solution Approach 1:

The patent segments the wind-blowing path into distinct sections with different aspect ratios. The path is divided into a first section with a smaller aspect ratio and a second section with a larger aspect ratio, allowing optimized flow characteristics in each segment to achieve extended spray travel distance while maintaining structural feasibility.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent optimizes the two-dimensional cross-sectional geometry of the wind-blowing path by controlling the aspect ratio. This dimensional optimization of the flow path cross-section enables extended spray travel distance and improved dispersing ability without adding complex three-dimensional structures or components.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 configuration significantly elongates the spray travel distance of microparticles, enhances their dispersing ability, reduces noise, and maintains high ion concentrations over a larger area, effectively preventing bacterial entry into the refrigerator while maintaining a sanitary environment.

Implementation Method 1

If the enlarging rate of the aspect ratio or the enlarging rate of the cross-sectional area is selected to appropriate values, diffuser effect can be obtained and the sending out ability of microparticles can be enhanced.

Methodology Applied

Scientific EffectDiffuser effect: Diffusion

Implementation Method 2

An ion generating apparatus 14 which generates the ion. A refrigerator (see FIG. 35) having the ion diffusing apparatus is described in Patent Publications 1 and 2.

Methodology Applied

Scientific EffectIon generation: Ionisation

Data Source

PatentUS7718136B2Fine particle diffuser and refrigerator with the same

Publication Date: 2010.05.18 SHARP KK

AI summary

It is an object of the invention to provide a microparticle diffusing apparatus capable of largely elongating the spray travel distance of microparticles emitted from the microparticle diffusing apparatus and, also, capable of emitting the microparticles in a wide range, enhancing the effect of the microparticles and reducing the noise. The microparticle diffusing apparatus includes a microparticle generating apparatus which generates microparticles from a microparticle generating part, a wind-blowing path which transfers the microparticles generated from the microparticle generating apparatus, and a blowout opening which is formed in an end of the wind-blowing path and which discharges the microparticles, and an aspect ratio of a cross section of the wind-blowing path is gradually increased from a start point to an end point.