Electromagnetic Induction Tooth-Brushing Cup for Rapid Water Heating
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Solution Overview
Problem
People often find tooth brushing uncomfortable due to cold water, and mixing hot water can be troublesome and time-consuming.
Innovation Solution
A tooth-brushing cup and heating device featuring a food-grade stainless steel cup with an electromagnetic coil and control circuit, allowing for temperature and heating time setting via a display window and buttons, ensuring efficient heating of water using eddy currents and automatic temperature sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If hot water is mixed manually, then water temperature can be adjusted, but it is troublesome and time-consuming
Solution Approach 1:
The patent replaces the manual mechanical mixing process with an electromagnetic heating system. An electromagnetic coil generates eddy currents that directly heat the stainless steel cup, which in turn heats the water electronically, eliminating the need for manual hot water mixing and significantly reducing the time required.
Solution Approach 2:
The patent changes the temperature parameter through electronic control rather than manual mixing. A control circuit with temperature sensor and timer allows precise adjustment of heating temperature and duration, enabling quick adaptation to different temperature needs without the time-consuming manual mixing process.
2Productivity
If electromagnetic coil heating is used, then heating efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by concentrating the heating function in a specific location - the electromagnetic coil is positioned within the base, directly beneath the stainless steel cup. This localized heating approach improves efficiency while minimizing the overall device complexity by avoiding distributed heating systems.
Solution Approach 2:
The base unit serves multiple functions: it houses the electromagnetic coil for heating, contains the control circuit for temperature and time management, and provides structural support for the cup. This multi-functionality consolidates complexity into a single base unit rather than requiring separate components.
3Productivity
If the cup is tightly attached to the base panel, then heating effect is improved, but water may accumulate on the outer wall
Solution Approach 1:
The patent uses a conical surface design on the inner wall of the cup that contacts the base panel. This curved geometric shape ensures tight attachment for efficient heating while the slope of the conical surface prevents water from accumulating on the outer wall, as water naturally drains downward along the angled surface.
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 quickly heats water to a set temperature for a specified time, reducing waiting time and ensuring comfort during tooth brushing with minimal complexity and precision requirements.
Implementation Method 1
When alternating current is introduced into the electromagnetic coil in the base, eddy current is generated in the stainless steel side plane of the tooth-brushing cup attached to the base panel. The eddy current heats the tooth-brushing cup, and the metal wall of the side plane further heats water in the tooth-brushing cup.
Implementation Method 2
When alternating current is introduced into the electromagnetic coil in the base, eddy current is generated in the stainless steel side plane of the tooth-brushing cup attached to the base panel.
Implementation Method 3
A thermistor is arranged in the control circuit and used for sensing the temperature transmitted by the tooth-brushing cup.
Implementation Method 4
Under the combined action of the gravity and the conical surface inside the hoop the side plane on the tooth-brushing cup is tightly attached to the base panel, and meanwhile, water on the outer wall of the tooth-brushing cup naturally drops and cannot accumulate.
Data Source
AI summary
A tooth-brushing cup and heating device consists of a tooth-brushing cup, a hoop, a base and the like an electromagnetic coil, a control circuit and the like are arranged in the base, a display window is arranged at the upper part of the base. Four buttons are arranged above the display window for setting the temperature and the heating time respectively, and a power switch is arranged on the right side of the display window. The hoop is installed on the base, and a conical surface inside the hoop is attached to the outer conical surface of the tooth-brushing cup. The tooth-brushing cup is made of stainless steel by stamping and is in a circular table shape, and a side plane is stamped on the side wall of the tooth-brushing cup to be tightly attached to a base panel.