Hair Styling Blowing Head With Offset Deflector Rows for Uniform Airflow

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Solution Overview

Problem

Existing hairdressing appliances suffer from imperfect aeraulic efficiency, particularly in terms of air flow homogeneity and ergonomics, requiring tedious mode switching and posing safety risks due to detachable accessories.

Innovation Solution

A hairdressing appliance with a blowing head featuring distinct first and second air blowing outlets and a movable air directing member, combined with a unique arrangement of air deflectors in parallel, offset rows to enhance airflow homogeneity and simplify operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional air deflectors are used in blow-drying brushes, then the appliance can blow air towards the hair, but the airflow becomes spatially heterogeneous with poor flow rate uniformity

Engineering Contradiction:
Improveairflow homogeneityVSAvoidair deflector arrangement
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies asymmetry by arranging air deflectors in offset rows where deflectors in adjacent rows are staggered rather than aligned. This asymmetric offset arrangement creates a more uniform airflow distribution by preventing concentrated flow paths, thereby improving airflow homogeneity without requiring complex additional components.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The patent segments the air deflector system into multiple rows with offset arrangements. By dividing the airflow control into segmented rows that are offset from each other, the system achieves more uniform airflow distribution across the outlet, resolving the contradiction between airflow homogeneity and device complexity.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If detachable accessories are used to modify blowing modes, then the appliance can perform multiple hair styling functions, but the user must assemble/disassemble accessories which is tedious and poses safety risks

Engineering Contradiction:
Improveblowing mode switchingVSAvoidmode switching operation
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent merges multiple blowing mode functions into a single integrated appliance body. Different blowing modes are achieved through internal air deflector configurations rather than requiring separate detachable accessories. This integration eliminates the need for assembly/disassembly operations while maintaining versatility, thereby improving ease of operation without sacrificing adaptability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent implements multi-functionality within a single appliance design, where the same appliance can perform multiple hair styling functions through internal reconfiguration of airflow paths. This universal design eliminates the need for multiple detachable accessories, making mode switching simpler and safer while maintaining adaptability to different styling needs.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Productivity

If large dimensions air blowing outlet is used, then the appliance can deliver higher airflow volume, but the airflow becomes spatially heterogeneous with poor flow rate uniformity

Engineering Contradiction:
Improveairflow volumeVSAvoidflow rate uniformity
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent addresses the airflow uniformity issue by transitioning from a single-row to a multi-row offset arrangement of air deflectors. This dimensional change in the deflector configuration allows the large air blowing outlet to maintain both high airflow volume and uniform flow rate distribution by distributing the airflow through multiple offset rows.

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

The appliance achieves improved aeraulic efficiency, ensuring uniform airflow and temperature distribution, enhancing user safety and ergonomics while allowing easy mode switching without external accessories.

Implementation Method 1

first air deflectors for guiding the air flow out of the appliance via said first air blowing outlet

Methodology Applied
Scientific EffectFluid flow guidance:

Implementation Method 2

said rows being adjacent and offset from each other in said first direction so that first air deflectors of one of said rows are neither contiguous nor aligned... with first air deflectors of another of said adjacent rows

Methodology Applied
Scientific EffectFlow homogenization:

Data Source

PatentEP4609750A1Hair styling appliance comprising a blowing head equipped with air deflectors arranged in offset manner
Publication Date: 2025.09.03 SEB SA
  • EP4609750A1 patent drawingFigure 1
  • EP4609750A1 patent drawingFigure 2
  • EP4609750A1 patent drawingFigure 3

AI summary

- The invention relates to a hairdressing appliance (1) comprising a blowing head (5) which carries at least one first air blowing outlet (6), and which comprises air deflectors (7A, 7B) for guiding an air flow out of the appliance via the first air blowing outlet, wherein said air deflectors are organized in a plurality of rows substantially parallel to a first direction, said rows being adjacent and offset from each other in said first direction so that air deflectors of one of said rows are neither contiguous nor aligned in a second direction substantially orthogonal to said first direction, with air deflectors of another of said adjacent rows. - Hairdressing appliances.