Cleaner Fan Motor Diffuser Design to Reduce Length and Weight

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Solution Overview

Problem

Conventional cleaners with diffusers often increase the length and weight of the device due to the extension of diffuser components along the rotational axis of the impeller, which can lead to inefficiencies and reduced mobility, especially in robot cleaners and upright types.

Innovation Solution

The implementation of a diffuser device with a radiating diffuser extending radially from the rotational axis of the impeller and an axial diffuser that discharges air in a direction opposite to the impeller's discharge, reducing the overall length and weight of the cleaner while improving efficiency and heat dissipation by arranging the motor, impeller, and diffuser in a specific configuration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the diffuser extends in the rotational axis direction of the impeller, then the diffusing function is improved, but the length and weight of the cleaner increase

Engineering Contradiction:

Improvediffusing functionVSAvoidlength of cleaner

Core Design Contradiction:

ProductivityVSLength of moving object

Solution Approach 1:

The diffuser is reconfigured to extend in the radial direction from the rotational axis of the impeller instead of the axial direction, changing the spatial dimension of extension. This dimensional change allows the diffuser to perform its function while reducing the overall length of the cleaner in the rotational axis direction.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

Instead of extending the diffuser in the conventional axial direction, the invention inverts the extension direction to radial direction. This inversion resolves the contradiction by achieving diffusing function without increasing the length in the rotational axis direction.

Inventive Principle:

Principle #13The other way round (Inversion)

2Productivity

If the diffuser extends in the rotational axis direction of the impeller, then the diffusing function is improved, but the weight of the cleaner increases

Engineering Contradiction:

Improvediffusing functionVSAvoidweight of cleaner

Core Design Contradiction:

ProductivityVSWeight of moving object

Solution Approach 1:

The diffuser extends in the radial direction from the rotational axis instead of the axial direction, changing the spatial dimension. This dimensional change reduces the overall size and consequently the weight of the cleaner while maintaining the diffusing function.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The invention inverts the conventional axial extension to radial extension, achieving the diffusing function with a more compact structure that reduces weight.

Inventive Principle:

Principle #13The other way round (Inversion)

3Productivity

If the axial diffuser discharges air toward the filter, then the air flow efficiency is improved, but the turbulence and noise increase

Engineering Contradiction:

Improveair flow efficiencyVSAvoidturbulence and noise

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The axial diffuser includes curved surfaces that gradually guide air flow from the radial direction to the axial direction. The curved geometry smooths the transition of air flow, reducing turbulence and noise while maintaining efficient air flow toward the filter.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The diffuser changes the flow parameters of air gradually through its curved structure, transitioning from high-velocity radial flow to lower-velocity axial flow. This parameter change reduces turbulence and noise while maintaining air flow efficiency.

Inventive Principle:

Principle #35Parameter changes

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 reduces the length and weight of the cleaner, enhances efficiency, and improves heat dissipation by arranging components to minimize turbulence and noise, resulting in a more effective and compact cleaning device.

Implementation Method 1

an impeller configured to be rotatable to generate a suction force inside the body

Methodology Applied

Scientific EffectSuction force generation through impeller rotation: Impeller

Implementation Method 2

a radiating diffuser extending in a radial direction from a rotational axis of the impeller, and an axial diffuser extending from the radiating diffuser

Methodology Applied

Scientific EffectRadial diffusion of air flow: Diffusion

Implementation Method 3

guided by the axial diffuser to the filter to be filtered, and then discharged through the body exhaust vent

Methodology Applied

Scientific EffectAxial guidance of air flow: Advection

Data Source

PatentUS20240122420A1cleaner

Publication Date: 2024.04.18 SAMSUNG ELECTRONICS CO LTD

AI summary

A cleaner including a body including a body exhaust vent; a filter installable inside the body; and a fan motor device including a rotatable impeller to generate a suction force inside the body, a motor to rotate the impeller, and a diffuser device including a radiating diffuser extending in a radial direction from a rotational axis of the impeller, and an axial diffuser extending from the radiating diffuser. The fan motor device is configured so that, with the filter installed inside the body, rotation of the impeller by the power provided by the motor causes air to pass through the fan motor device and be discharged from the impeller, and then guided by the radiating diffuser in the radial direction from the rotational axis of the impeller, and then guided by the axial diffuser to the filter to be filtered, and then discharged through the body exhaust vent.