Induction Heating Cup Control for Hands-Free Hookah Heating
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Solution Overview
Problem
Conventional high-frequency heating devices for hookahs are cumbersome to use and lack over-temperature protection, requiring manual operation and posing safety risks.
Innovation Solution
A high-frequency heating device with a magnetic induction coil, thermal insulation cup, temperature difference sensor, and thermistor for automatic temperature control, allowing hands-free operation and over-temperature protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional high-frequency heating device is held by hands to heat tobacco material, then the heating function is achieved, but the operation is cumbersome and requires manual intervention
Solution Approach 1:
The patent replaces the manual mechanical holding operation with an automated magnetic induction heating system. The magnetic induction coil generates an alternating magnetic field that induces eddy currents in the metal conductor, producing heat automatically without requiring manual intervention to hold or position the device.
Solution Approach 2:
The heating device is designed to perform the heating function automatically through the temperature difference sensor and variable-frequency power source that adjust heating parameters based on detected temperature conditions, enabling the system to serve itself without continuous manual operation.
2Reliability
If a conventional high-frequency heating device is used without over-temperature protection, then the device structure is simple, but safety risks arise from uncontrolled heating
Solution Approach 1:
The patent implements a feedback control system where the temperature difference sensor continuously monitors the temperature of air entering the thermal insulation cup and the thermistor monitors the temperature inside the cup. This feedback information is used by the variable-frequency power source to adjust heating parameters and stop heating when temperature thresholds are reached, preventing uncontrolled overheating.
Solution Approach 2:
The patent incorporates preventive safety measures by designing the system to automatically stop heating when predetermined temperature thresholds are approached. The thermistor positioned inside the thermal insulation cup provides early warning before dangerous overheating occurs, allowing the system to take corrective action in advance.
3Extent of automation
If automatic temperature control is implemented with temperature difference sensor and thermistor, then safety and automation are improved, but device complexity increases
Solution Approach 1:
The variable-frequency power source serves multiple functions: it provides power to the magnetic induction coil, receives temperature feedback from both the temperature difference sensor and thermistor, automatically adjusts heating parameters, and controls the heating process. This multi-functionality reduces the need for separate control components, mitigating the increase in device complexity.
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
Enables convenient, safe, and automated heating of tobacco materials in hookahs, ensuring user safety and enhanced user experience.
Implementation Method 1
the variable-frequency power source outputs an alternating current and thus the magnetic induction coil produces an induced magnetic field
Implementation Method 2
an eddy current is produced in the metal conductor in an induction magnetic field of the magnetic induction coil whereby the metal conductor is heated up
Implementation Method 3
the thermal insulation cup is nested in the magnetic induction coil
Implementation Method 4
the temperature difference sensor is soldered on the variable-frequency power source and is in the vicinity of a top opening of the thermal insulation cup to sense a temperature of an airflow entering the thermal insulation cup
Implementation Method 5
the thermistor is soldered on the variable-frequency power source and is located in the thermal insulation cup for over-temperature protection; when a working temperature of the heating device reaches 315,6 degrees Celsius (600 degrees Fahrenheit), no current is output from the variable-frequency power source
Implementation Method 6
the metal conductor is heated up, and then the heat is transferred to the heating cup through heat transfer to heat the tobacco material in the heating cup
Data Source
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AI summary
A high-frequency heating device, includes: a housing, a thermal insulation cup, and a magnetic induction coil. The housing includes a cavity and the magnetic induction coil is disposed in the cavity. The thermal insulation cup is nested in the magnetic induction coil.