Elastic Guide Device for Wick Compaction in Steam Hair Straighteners

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Solution Overview

Problem

Existing hair straightening appliances with steam production systems face issues of durability and reliability due to wick deformation and maintenance challenges, such as scale formation and difficult disassembly, which affect steam production and user convenience.

Innovation Solution

A hair straightening device with an elastic guide device that maintains the wick in a perpendicular direction to prevent compaction and ensures optimal contact with the heating element, combined with a helical spring for precise guidance and air venting, and a wick composed of multiple strands for enhanced durability and adjustable liquid flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the wick is made flexible to facilitate liquid transfer, then steam production is improved, but the wick deforms and compacting occurs reducing reliability

Engineering Contradiction:
Improvesteam productionVSAvoidwick contact consistency
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent applies a flexible membrane structure that allows the wick to expand and contract radially while maintaining its position. This flexible membrane prevents the wick from permanently deforming and compacting during repeated use, thereby maintaining reliable contact with the heating element while preserving steam production capability.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The patent introduces a dynamic positioning mechanism that allows the wick to move automatically between a retracted position (when not in use) and an extended position (when steam production is needed). This dynamic behavior ensures the wick is properly positioned for optimal contact without permanent deformation, resolving the reliability issue.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If the wick is made movable to enable automatic steam activation, then ease of operation is improved, but maintenance difficulty increases due to scale formation

Engineering Contradiction:
Improveautomatic steam activationVSAvoidmaintenance and descaling
Core Design Contradiction:
Ease of operationVSEase of repair

Solution Approach 1:

The patent divides the steam production system into separable components, allowing the wick and membrane assembly to be easily removed from the main device body. This segmentation enables users to access and maintain the wick independently, making descaling and replacement procedures simpler while preserving the automatic activation functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary membrane structure between the wick and the external environment. This membrane acts as a barrier that prevents scale formation on the wick itself, while still allowing steam to pass through. This intermediary layer simplifies maintenance by preventing the accumulation of scale that would otherwise require frequent descaling operations.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If the wick is compressed to improve contact with heating element, then steam production is improved, but the wick deteriorates and becomes packed reducing durability

Engineering Contradiction:
Improvesteam productionVSAvoidwick durability
Core Design Contradiction:
ProductivityVSDuration of action of stationary object

Solution Approach 1:

The patent uses a flexible membrane that can elastically deform during operation to ensure good contact with the heating element, then returns to its original shape when not in use. This elastic flexibility allows the membrane to maintain optimal contact for steam production without the permanent compression and deterioration that would reduce durability.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The patent incorporates a cushioning mechanism that prevents excessive compression forces from being imposed on the wick. This cushioning action absorbs excess mechanical stress during the compression phase, protecting the wick from deterioration and extending its service life while still achieving adequate contact for steam production.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

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 solution enhances the reliability and durability of the appliance by maintaining consistent steam production, simplifies maintenance, and prevents scale formation, ensuring continuous and efficient operation.

Implementation Method 1

the wick, in contact with the liquid contained in the reservoir, will soak up the liquid, by capillarity, thus allowing the transfer of the liquid from the reservoir to the heating element

Methodology Applied
Scientific EffectCapillarity: Capillary Action

Implementation Method 2

The wick is then in contact with the heating element, which has the effect of vaporizing the liquid which it contains at its end, and consequently of producing steam

Methodology Applied
Scientific EffectVaporization: Evaporation

Data Source

PatentEP3806693B1Hair-styling apparatus provided with a resilient lock-guide device
Publication Date: 2022.03.16 SEB SA
  • EP3806693B1 patent drawingFigure 1~3
  • EP3806693B1 patent drawingFigure 4~7

AI summary

Disclosed is a hairstyling device (1) for straightening hair, comprising a straightening surface (5) having at least one planar portion intended to come into contact with a strand of hair, a reservoir (10) for liquid, a heating element (21), a wick (13) communicating with the reservoir (10) so as to be soaked with liquid, said wick (13) extending between a distal end (16) intended to come into contact with the heating element (21) and a proximal end (20) supplied with liquid from the reservoir (10), and means for guiding the wick (13) configured to allow it to move from a passive position to an active position in which said wick is in contact with the heating element (21) for creating steam, characterized in that said guiding means comprise an elastic guide device (18) in contact with the periphery of said wick (13) at the distal end (16).