Heated Razor Cartridge Thermal Management
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Solution Overview
Problem
Existing heated razors for wet shaving have inefficiencies in skin heating due to minimal skin contact area and safety concerns from uneven heating, leading to discomfort or burning.
Innovation Solution
A shaving razor system with a housing, guard, and cap, featuring a heating element with a skin-contacting surface and an insulating member, along with thermal sensors for precise temperature control, ensuring safe and consistent heat distribution during shaving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the heating element surface area is increased to improve heating efficiency, then the heating effectiveness improves, but the risk of burning or discomfort increases
Solution Approach 1:
The patent incorporates temperature sensors that continuously monitor the temperature of the heating element and provide feedback to a control system. This feedback mechanism allows the system to adjust the heating power in real-time, maintaining the heating element temperature within a safe range while ensuring effective heating during shaving.
Solution Approach 2:
The patent employs variable power supply to the heating element, dynamically adjusting electrical parameters (voltage, current) based on detected temperature conditions. This parameter change strategy enables the heating element to operate at different power levels, optimizing heating efficiency while preventing overheating and burning risks.
2Temperature
If more heat is delivered to the skin to improve heating effectiveness, then the warmth sensation improves, but safety concerns such as burning increase
Solution Approach 1:
Temperature sensors positioned near the heating element continuously monitor the actual temperature and feed this information back to the control system. This real-time feedback enables precise temperature control, ensuring the skin receives beneficial warmth while preventing dangerous temperature levels that could cause burning.
Solution Approach 2:
The heating system transitions from static fixed-power heating to dynamic adjustable heating. The control system continuously modulates the heating power based on real-time temperature feedback, allowing the system to adapt to varying thermal conditions and maintain safe operating temperatures while delivering effective heating.
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 provides a safe and efficient heating mechanism that enhances the shaving experience by maintaining a consistent temperature across the heating element, preventing overheating and ensuring user comfort.
Implementation Method 1
A heating element is mounted to the housing for transferring heat during a shaving stroke
Implementation Method 2
An insulating member is positioned within the perimeter wall
Data Source
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AI summary
A shaving razor cartridge with a housing having a guard, a cap, and one or more blades located between the guard and the cap. The guard is positioned in front of the one or more blades and the cap is positioned behind said one or more blades. A heating element (16) is mounted to the housing for transferring heat during a shaving stroke. The heating element includes a skin contacting surface (30) and an opposing bottom surface (34) defined by a perimeter wall (36). An insulating member (40) is positioned within the perimeter wall. The insulating member has a first surface (42) facing the bottom surface of the heating element and a second surface (44).