Peltier-Cooled Skin Treatment Head for Overheating Protection
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Solution Overview
Problem
Existing skin treatment devices using liquefied nitrogen (LN2) for cooling risk frostbite and require precise timing, posing safety hazards and structural complexity, while existing solutions fail to optimally control cooling temperature.
Innovation Solution
A skin treatment device utilizing a Peltier element for cooling, combined with an air cooling unit, allows for rapid cooling of the output unit and a detachable assembly unit for convenient replacement, reducing manufacturing costs and safety risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If liquefied nitrogen (LN2) is used for cooling the output unit, then cooling effectiveness is improved, but safety risks increase due to frostbite hazards and handling complexity
Solution Approach 1:
The patent replaces the expensive and dangerous liquefied nitrogen system with a Peltier element that uses electrical energy for cooling. The Peltier element is a solid-state device that actively cools the output unit contact part without requiring cryogenic liquids, thereby eliminating frostbite risks while maintaining effective cooling during the treatment process
Solution Approach 2:
The patent substitutes the mechanical/chemical cooling system (LN2 tank, valve, tube, nozzle) with an electrical cooling system based on the Peltier effect. This replacement eliminates the need for cryogenic liquid handling, valves, and tubes, thereby removing the associated safety hazards while achieving the required cooling effect
2Temperature
If liquefied nitrogen is used for cooling, then cooling capability is improved, but device complexity increases due to additional components like tanks, valves, and tubes
Solution Approach 1:
The patent extracts and removes the complex LN2 storage and delivery system (tank, valve, tube, nozzle) from the device structure. Instead, it integrates a compact Peltier element directly into the output unit, significantly simplifying the overall device structure while maintaining effective cooling capability
Solution Approach 2:
The Peltier element serves multiple functions: it provides active cooling, is controlled electronically, and integrates directly into the output unit structure. This multi-functional component replaces several separate components (cooling system, control valve, delivery tube), thereby reducing device complexity
3Duration of action of moving object
If nitrogen gas spraying time is extended, then cooling duration is improved, but frostbite risk increases due to moisture condensation on skin
Solution Approach 1:
The patent incorporates a temperature sensor that continuously monitors the temperature of the output unit contact part and provides feedback to the control unit. The control unit adjusts the Peltier element operation based on this feedback, maintaining the temperature within a safe range (above 0°C) to prevent frostbite while ensuring adequate cooling throughout the treatment duration
Solution Approach 2:
The cooling system transitions from a static, pre-determined spray duration to a dynamic, real-time controlled system. The Peltier element's cooling action is continuously adjusted based on temperature sensor feedback, allowing the cooling duration and intensity to adapt to actual thermal conditions, thereby preventing frostbite while maintaining effective cooling
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 device effectively prevents overheating-induced skin damage by rapid cooling and simplifies the structure, enhancing safety and ease of maintenance.
Implementation Method 1
a cooling unit configured to cool the output unit... a cooling element part configured to come into contact with the output unit and cool the output unit with a Peltier element
Implementation Method 2
an air cooling unit configured to supply external air to the cooling unit to forcibly cool the cooling unit
Data Source
AI summary
The present invention relates to a skin treatment device with overheating protection and includes a grip unit allowed to be gripped, a power unit connected to the grip unit to supply power, an assembly unit detachably attached to the grip unit, an output unit mounted on the assembly unit, connected to the grip unit to receive power, and configured to come into contact with skin to output a high frequency pulse, and a cooling unit configured to cool the output unit, and thus it is possible to prevent skin damage due to overheating of the output unit during the skin treatment process.