Towel Heating Barrel Control Circuit Over-Temperature Protection
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Solution Overview
Problem
Existing towel heating devices lack effective over-temperature protection circuits, leading to unsafe high temperatures, energy wastage, and potential fires, compromising user experience and device longevity.
Innovation Solution
A control and protection circuit for a towel heating barrel, comprising a power module, temperature detection module, and high-temperature protection switch, which includes a relay and fuse for automatic temperature control and safety shutdown, ensuring the heating temperature remains within a safe range and preventing overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a towel heating device heats towels to high temperature, then heating efficiency is improved, but temperature safety deteriorates and fire risk increases
Solution Approach 1:
The patent implements preliminary protective actions by pre-installing multiple protection circuits (over-temperature protection circuit, over-current protection circuit, leakage protection circuit) before heating operations begin. These circuits are configured to automatically detect and respond to dangerous conditions, preventing fire risks before they materialize while allowing efficient heating to proceed.
Solution Approach 2:
The patent introduces intermediary protection circuits as mediators between the heating element and the towel. These circuits continuously monitor temperature, current, and leakage conditions, acting as intermediaries that can interrupt the heating circuit when dangerous conditions are detected, thus preventing direct fire hazards while maintaining heating efficiency during normal operation.
2Speed
If a towel heating device heats towels to high temperature, then heating speed is improved, but temperature control precision deteriorates
Solution Approach 1:
The patent implements feedback control through over-temperature protection circuits that continuously monitor the heating temperature. When the temperature reaches a preset threshold, the feedback signal automatically triggers the protection circuit to interrupt the heating power supply, preventing further temperature rise. This feedback mechanism ensures precise temperature control while maintaining fast heating speed during the normal heating phase.
Solution Approach 2:
The patent employs dynamic temperature control by configuring multiple protection circuits with different threshold values. The system dynamically adjusts the heating state based on real-time temperature conditions, allowing rapid heating when temperature is below thresholds and automatic shutdown when thresholds are exceeded, thus achieving both fast heating and precise temperature control.
3Reliability
If multiple protection circuits are added to the heater, then safety reliability is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple protection functions (over-temperature protection, over-current protection, leakage protection) into an integrated control system. The protection circuits are combined with the existing heating control circuitry, sharing common components such as the microcontroller and power switching elements. This merging approach enhances safety reliability through multiple protection layers while minimizing the increase in device complexity by utilizing shared resources.
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 solution effectively maintains the heating temperature within a controllable range, preventing overheating, reducing energy wastage, and ensuring the safety and longevity of the device by providing three levels of protection through the relay, high-temperature protection switch, and fuse.
Implementation Method 1
a heating module... The power module, the power supply module and the heating module are connected in series to supply power to the heating module
Implementation Method 2
the temperature detection module is in signal connection with the control module
Implementation Method 3
The power supply module includes a high-temperature protection switch, a fuse and a relay. The high-temperature protection switch and the fuse are connected in series with the heating module
Implementation Method 4
the power supply module is electrically connected with the power module through the relay. The control module includes a control circuit, and the control circuit is connected with the relay in a controlled way, and controls on and off of the relay
Data Source
AI summary
A control and protection circuit of a heater, a towel heating barrel and a control method thereof are provided in this disclosure. The control and protection circuit of the heater includes a power module, a power supply module, a control module, a temperature detection module and a heating module. The power module, the power supply module and the heating module are connected in series to supply power to the heating module, the control module is in signal connection with the power supply module to control on and off of the power supply module, and the temperature detection module in signal connection with the control module. The power supply module includes a high-temperature protection switch, a fuse and a relay. The control and protection circuit of the whole heater has three levels of protection, which can not only effectively provide high-temperature protection, but also ensure service life of the heater.