Segmented Blowing Device Air Outlets for Uniform Wind Speed

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Solution Overview

Problem

Existing blowing devices for recording devices face challenges in maintaining uniform wind speed across the width of a medium due to warpage and manufacturing difficulties, leading to gas leakage and uneven heating.

Innovation Solution

A blowing device configuration featuring a housing with a blowing path, a fan, and multiple flow path members arranged in a line in the width direction, with strategically positioned air outlets to minimize warpage and gas leakage, ensuring consistent wind speed and improved thermal efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the air outlet is lengthened in the width direction to heat the entire medium, then the heating coverage is improved, but the manufacturing accuracy requirement increases and warpage occurs

Engineering Contradiction:
Improveheating coverageVSAvoidair outlet manufacturing accuracy
Core Design Contradiction:
Area of stationary objectVSManufacturing precision

Solution Approach 1:

The air outlet is divided into multiple separate members arranged in a line in the width direction. Each member has a manageable length that avoids warpage while collectively providing full width coverage. The defining walls between adjacent members are designed with consistent thickness dimensions to maintain uniform wind speed across all outlets.

Inventive Principle:
Principle #1Segmentation

2Area of stationary object

If the air outlet is lengthened in the width direction, then the heating coverage is improved, but warpage is caused leading to gas leakage

Engineering Contradiction:
Improveheating coverageVSAvoidgas leakage prevention
Core Design Contradiction:
Area of stationary objectVSReliability

Solution Approach 1:

The air outlet is segmented into multiple shorter members arranged in a line, preventing warpage in each individual member while collectively covering the full width. This segmentation ensures that each member maintains its structural integrity and sealing reliability without the warpage issues that plague single long members.

Inventive Principle:
Principle #1Segmentation

3Ease of manufacture

If multiple members are arranged in a line to prevent warpage, then manufacturing ease is improved, but wind speed variation occurs due to different wall thickness dimensions

Engineering Contradiction:
Improveair outlet manufacturingVSAvoidwind speed uniformity
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The defining walls between adjacent members are designed with consistent thickness dimensions specifically at the critical interfaces where members join. This localized quality control ensures uniform airflow characteristics and wind speed across all air outlets, while the overall structure remains divided into manageable segments for ease of manufacture.

Inventive Principle:
Principle #3Local quality

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 configuration enhances manufacturing ease, reduces warpage, and maintains uniform wind speed, preventing gas leakage and ensuring consistent drying of the medium, thereby improving thermal efficiency and reducing the risk of uneven heating.

Implementation Method 1

a fan configured to blow air, the fan being provided on the blowing path

Methodology Applied
Scientific EffectGas flow:

Implementation Method 2

a blowing device configured to blow air toward a medium being applied with liquid

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentUS11173728B2Blowing device and recording device
Publication Date: 2021.11.16 SEIKO EPSON CORP
  • US11173728B2 patent drawing
  • US11173728B2 patent drawing
  • US11173728B2 patent drawing

AI summary

A blowing device includes a housing including a blowing path, a fan, a first flow path member being fixed downstream of the fan, and including a first and a second air outlet that are arranged in a width direction, and a second flow path member being fixed downstream of the fan, and including a third and a fourth air outlet that are arranged in the width direction. The first and the second flow path member are fixed in a state of being arranged in the width direction, a fifth air outlet is formed between the first and the second flow path member that are fixed, and a part of an opening edge of the fifth air outlet is the first flow path member, and a part of the opening edge of the fifth air outlet is the second flow path member.