Hair Styler Thermal Control With Idle-Boost Temperature Recovery

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Solution Overview

Problem

Existing hair styling devices struggle to maintain a consistent temperature on the heating surface, especially when hair is frequently loaded and unloaded, which can impact the quality of thermal styling and potentially damage the hair.

Innovation Solution

A heating apparatus with a temperature sensor and control circuitry that adjusts power delivery to the heating element based on temperature measurements and control parameters, switching between idle and boost modes to maintain the desired operating temperature and prevent overheating.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the heating element continuously supplies high power to maintain temperature, then the temperature stability is improved, but the energy consumption increases and the risk of overheating when hair is removed increases

Engineering Contradiction:
Improvetemperature stabilityVSAvoidenergy consumption
Core Design Contradiction:
Stability of the object's compositionVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic power adjustment by switching between idle mode (lower power) and boost mode (higher power) based on real-time temperature measurements and operational state detection. The control circuitry dynamically adapts the heating power to match the actual thermal needs, using temperature sensors to detect when hair is loaded or removed and adjusting power accordingly, thereby maintaining temperature stability while reducing unnecessary energy consumption.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the power delivery parameter dynamically based on operational conditions. When hair is detected on the heating element, the system transitions to boost mode with higher power parameters; when hair is removed, it switches to idle mode with reduced power parameters. This parameter adaptation allows the system to maintain effective styling temperature during use while minimizing energy consumption and overheating risk during idle periods.

Inventive Principle:
Principle #35Parameter changes

2Speed

If the heating element quickly responds to temperature drops by increasing power, then the temperature recovery speed is improved, but the temperature overshoot and hair damage risk increases

Engineering Contradiction:
Improvetemperature recovery speedVSAvoidhair damage from overheating
Core Design Contradiction:
SpeedVSObject-affected harmful factors

Solution Approach 1:

The patent employs feedback control through temperature sensors that continuously monitor the heating element temperature and provide real-time data to the control circuitry. This feedback mechanism allows the system to detect temperature drops caused by hair loading and respond by increasing power in boost mode, while also detecting when the desired temperature is reached or exceeded, triggering a switch back to idle mode to prevent overheating and hair damage.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system uses dynamic power adjustment with two distinct operational modes that adapt to real-time conditions. The control circuitry detects operational state changes (hair loaded/unloaded) and dynamically switches between idle and boost modes, enabling rapid temperature recovery when needed while automatically reducing power to prevent temperature overshoot and associated hair damage.

Inventive Principle:
Principle #15Dynamics

3Reliability

If the system maintains high temperature at all times, then the styling quality is improved, but the energy consumption increases and the safety risk when no hair is present increases

Engineering Contradiction:
Improvestyling quality consistencyVSAvoidcontrol system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements a dynamic control system with two operational modes (idle and boost) that adapts to the presence or absence of hair on the heating element. The control circuitry uses temperature sensor feedback to detect when styling operations are active and maintains high temperature in boost mode for consistent styling quality. When no hair is detected, the system automatically transitions to idle mode with reduced temperature, thereby maintaining styling reliability during use while reducing energy consumption and safety risks during idle periods.

Inventive Principle:
Principle #15Dynamics

4Speed

If the heating element rapidly heats up when hair is loaded, then the temperature recovery is improved, but the temperature fluctuation and styling consistency worsens

Engineering Contradiction:
Improvetemperature recovery speedVSAvoidtemperature consistency
Core Design Contradiction:
SpeedVSStability of the object's composition

Solution Approach 1:

The system uses continuous temperature monitoring and feedback control to manage the heating process. When hair is loaded and temperature drops, the feedback mechanism triggers boost mode with increased power for rapid recovery. The feedback loop continuously monitors temperature and automatically switches back to idle mode once the target temperature is reached, preventing excessive temperature fluctuations and maintaining styling consistency through precise thermal control.

Inventive Principle:
Principle #23Feedback

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 system effectively maintains high temperatures during hair loading and prevents overheating during unloading, ensuring consistent styling quality and reducing the risk of hair damage.

Implementation Method 1

a heater having a heating element for receiving electrical power and for converting the electrical power into heat to heat a heating surface of the heater

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

a temperature sensor for sensing and outputting measurements of a temperature of the heater

Methodology Applied
Scientific EffectThermal sensing: Thermistor

Implementation Method 3

control circuitry for controlling the power actuator to control the power delivered by the power actuator to the heating element, wherein the control circuitry is configured to: receive temperature measurements from the temperature sensor; control the power delivered to the heating element by the power actuator in dependence upon the temperature measurements and at least one control parameter, to maintain the heater at a desired operating temperature

Methodology Applied
Scientific EffectFeedback control: Feedback

Implementation Method 4

Hair has a relatively high thermal mass and when in contact with the heating surface of a hair styler the hair absorbs a significant amount of the heat energy

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS20250160495A1Thermal control apparatus and method
Publication Date: 2025.05.22 JEMELLA LTD
  • US20250160495A1 patent drawing
  • US20250160495A1 patent drawing
  • US20250160495A1 patent drawing

AI summary

An apparatus is used for drying and/or styling hair. The apparatus provides improved mixing of air from a heater using an impeller. A hinge is ergonomically positioned relative to the center of mass of the device. The housing is sealed to prevent ingress of water into the housing.