Electric roasting machine
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Solution Overview
Problem
Electric roasting machines experience heat loss and increased outer housing temperature due to heat radiation, leading to reduced food heating efficiency and potential user safety hazards.
Innovation Solution
The electric roasting machine incorporates a heat insulating cavity between the heating device and inner housing, utilizing a reflecting cover with a radiant heat source and a galvanized or aluminized layer to minimize heat conduction and radiation to the outer housing, along with a heat dissipating passage and air flow management to reduce temperature and enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If heat radiation device is used to heat food, then food heating efficiency is improved, but outer housing temperature increases causing safety hazards
Solution Approach 1:
The patent introduces an inner housing as an intermediary component between the heat radiation device and the outer housing. This inner housing acts as a thermal barrier that intercepts heat radiation before it reaches the outer housing, thereby maintaining food heating efficiency while preventing outer housing temperature increase that would cause safety hazards.
Solution Approach 2:
The patent divides the housing structure into two separate parts: an inner housing and an outer housing. This segmentation creates a thermal isolation layer that allows the heating function to operate effectively while protecting the outer housing from excessive heat, thus resolving the contradiction between heating efficiency and safety.
2Productivity
If heat radiation device operates, then food is heated effectively, but heat loss to outer housing increases
Solution Approach 1:
The inner housing serves as a thermal intermediary that redirects heat radiation toward the food while preventing heat loss to the outer housing. This intermediary structure ensures that the heat energy generated by the heating device is efficiently transferred to the food rather than being lost to the surrounding housing structure.
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
This design significantly reduces heat loss, improves food heating efficiency, and decreases the outer housing temperature, making the machine safer for users by minimizing the risk of scalding and enhancing overall performance.
Implementation Method 1
the inner housing cooperates with the heating device to form a heat insulating cavity
Implementation Method 2
a surface of the inner housing facing the reflecting cover is coated with a reflecting layer, and the reflecting layer is a galvanized layer or an aluminized layer
Implementation Method 3
a heat dissipating passage is formed between the outer housing and the inner housing
Data Source
AI summary
An electric roasting machine includes an outer housing, a heating device accommodated in the outer housing, and an inner housing between the outer housing and the heating device. A heat insulating cavity is formed between the inner housing and the heating device. A heat dissipating passage is formed between the outer housing and the inner housing.