Hair Styling Apparatus with Moisture Sensor Temperature Control

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Solution Overview

Problem

Hair styling apparatuses that apply high heat can damage hair by breaking down its chemical structure and reducing elasticity, especially when excessive heat is applied over a prolonged period, leading to potential breakage.

Innovation Solution

A hair styling apparatus equipped with a moisture sensor that detects the moisture level of hair and adjusts the temperature from a moisture-temperature setting to a dry-temperature setting when the hair is at or below a predetermined moisture threshold, thereby protecting the hair from heat damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If high heat is applied to hair for styling, then styling effectiveness is improved, but hair damage increases

Engineering Contradiction:
Improvestyling effectivenessVSAvoidheat damage
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent implements a feedback mechanism where a moisture sensor continuously monitors the moisture content of hair during styling. When the sensor detects that hair moisture falls below a predetermined threshold, the control circuit automatically adjusts the heating element temperature downward. This closed-loop feedback system prevents excessive heat damage while maintaining effective styling by dynamically adapting temperature based on real-time hair condition.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent applies dynamics by making the heating temperature variable rather than fixed. The system transitions from a static high-temperature styling mode to a dynamic temperature control mode that adjusts heating intensity based on real-time moisture sensor feedback. This allows the system to optimize between styling effectiveness and hair protection by continuously adapting temperature parameters during the styling process.

Inventive Principle:
Principle #15Dynamics

2Object-affected harmful factors

If temperature is reduced to protect hair, then heat damage is prevented, but styling effectiveness decreases

Engineering Contradiction:
Improveheat damageVSAvoidstyling effectiveness
Core Design Contradiction:
Object-affected harmful factorsVSProductivity

Solution Approach 1:

The feedback mechanism ensures that temperature reduction only occurs when necessary - specifically when moisture sensor readings indicate hair is below the predetermined moisture threshold. When hair moisture is adequate, the system maintains higher styling temperatures for effective styling. This conditional feedback approach prevents unnecessary temperature reductions that would compromise styling effectiveness while still providing protection when needed.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system dynamically changes the temperature parameter based on moisture content parameters. Rather than using a fixed low temperature that would always protect but never style effectively, the system adjusts the temperature parameter in response to changing hair moisture conditions. This parameter adaptation allows the system to achieve both protection and styling effectiveness under different operational conditions.

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

The apparatus effectively reduces heat damage by lowering the temperature when hair is detected to be below a certain moisture level, preventing damage and maintaining hair health during styling.

Implementation Method 1

a moisture sensor to detect a moisture-indicating parameter of the hair being styled by the hair styling apparatus and generate a moisture-indicating signal indicative of whether the hair is at or below a predetermined moisture threshold level

Methodology Applied
Scientific EffectMoisture detection:

Implementation Method 2

a control circuit to adjust the temperature of the hair-heating device from the moisture-temperature setting to the dry-temperature setting in response to the moisture sensor generating a moisture-indicating signal indicative of the hair being at or below the predetermined moisture threshold level

Methodology Applied
Scientific EffectHeat transfer control:

Data Source

PatentEP2524617B1Hair styling apparatus having hair-protection function
Publication Date: 2016.07.06 ROVCAL INC
  • EP2524617B1 patent drawingFigure 1
  • EP2524617B1 patent drawingFigure 2
  • EP2524617B1 patent drawingFigure 3

AI summary

A hair styling apparatus (101) includes a hair-heating device (108) for applying heat to hair. The hair-heating device (108) has a moisture-temperature setting and a dry-temperature setting less than moisture-temperature setting. A moisture sensor detects a moisture-indicating parameter of the hair, and generates a moisture-indicating signal indicative of whether the hair is at or below a predetermined moisture threshold level. A control circuit adjusts the temperature of the hair-heating device (108) from the moisture-temperature setting to the dry-temperature setting in response to the moisture sensor generating a moisture-indicating signal indicative of the hair being at or below the predetermined moisture threshold level. The hair-heating device (108) is active in the dry-temperature setting.