Cooking device and method for preventing cooking device from overheating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cooking devices face overheating issues when their cooling fans are constrained, leading to potential damage and fire, and existing solutions require additional components or devices that increase costs and complexity.
Innovation Solution
A cooking device with a thermal protector connected to both the neutral line and the motor/main board, which cuts off power if the motor temperature exceeds a predetermined value, using a minimum number of components to prevent overheating and fire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thermal protector is installed in the cooling motor to cut off power during overload, then the cooling motor is protected from damage, but the cooking device is not protected from overheating and fire
Solution Approach 1:
The patent introduces a thermal cut-out (TCO) as an intermediary device that monitors the temperature of the cooling motor and cuts off power supply when overheating is detected. This TCO is disposed in the power supply line to the cooling motor, acting as a mediator between the motor and the power source to prevent both motor damage and device overheating/fire hazards.
2Object-affected harmful factors
If separate devices or circuits such as thermal cut out or hall sensor are used to protect the cooking device from overheating, then overheating protection is achieved, but device complexity and cost increase
Solution Approach 1:
The patent combines the overheating protection function with the existing thermal protector structure by strategically disposing the thermal cut-out (TCO) in the power supply line to the cooling motor. This merging approach integrates multiple protection functions (motor overload protection and device overheating protection) into a unified system, avoiding the need for separate complex circuits or additional sensors while maintaining comprehensive protection.
3Object-affected harmful factors
If foreign matters stick to the cooling fan shaft, then the cooling fan cannot rotate properly causing overheating, but existing solutions require additional components that increase cost
Solution Approach 1:
The patent implements a self-service protection mechanism where the thermal cut-out (TCO) automatically monitors and responds to overheating conditions caused by cooling fan constraints. The system self-detects the problem through temperature monitoring and self-corrects by cutting off power supply, eliminating the need for external sensors, controllers, or additional components that would increase manufacturing cost.
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
Effectively prevents cooking device overheating and potential fires by cutting off power to the main board and motor when the cooling fan is constrained, using a simple and cost-effective configuration.
Implementation Method 1
a thermal protector having one end connected to the neutral line of the AC power supply and the other end commonly connected to the motor and the main board
Data Source
AI summary
A cooking device is provided. The cooking device supplied with power through an AC power supply including a neutral line includes: a motor configured to drive a cooling fan; a main board mounted with a plurality of components for an operation of the cooking device; and a thermal protector having one end connected to the neutral line of the AC power supply and the other end commonly connected to the motor and the main board, wherein the thermal protector cuts off connection between the neutral line and the main board through the thermal protector if a temperature of the motor is equal to or higher than a predetermined value.