Heating device
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Solution Overview
Problem
Existing electromagnetic wave heating devices, such as microwave ovens, face inefficiencies in thawing food due to the strong electromagnetic wave absorption by object carrying vessels, which reduces the energy available for thawing, and the assembly and positioning of radiating antennas can be complex and prone to damage.
Innovation Solution
The use of non-transparent PP materials for plastic components in the heating device reduces electromagnetic wave absorption, and the radiating antenna is positioned at a height of 1/3 to 1/2 of the cylinder body, with an adjustable load impedance to optimize energy distribution, and a signal processing and measurement control circuit to adjust the electromagnetic wave absorption rate, enhancing heating efficiency and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If object carrying vessels have stronger ability to absorb electromagnetic waves, then easier to manufacture and position, but less electromagnetic waves act on the food reducing thawing efficiency
Solution Approach 1:
The patent changes the material parameter of the object carrying vessel from high electromagnetic wave absorption material to low absorption material (specific materials with low dielectric loss), thereby reducing energy loss and improving thawing efficiency by allowing more electromagnetic waves to reach the food.
2Manufacturing precision
If radiating antenna is positioned at standard location, then assembly is straightforward, but positioning precision and heating uniformity are insufficient
Solution Approach 1:
The patent segments the antenna assembly into a modular structure with the radiating antenna mounted on a movable rack that can be independently positioned. This allows precise positioning of the antenna at different heights and locations within the heating chamber while maintaining simple assembly through standardized mounting interfaces.
Solution Approach 2:
The patent implements a movable rack system that allows the radiating antenna to be dynamically repositioned to different locations and heights. This dynamic positioning capability enables optimization of heating uniformity for different food types and sizes while keeping the overall device structure simple and easy to assemble.
3Manufacturing precision
If antenna is fixed in position, then structure is simple, but heating uniformity and energy distribution are insufficient
Solution Approach 1:
The patent replaces fixed antenna positioning with a movable rack system that enables dynamic adjustment of antenna position. This allows optimization of energy distribution and heating uniformity for different cooking requirements while maintaining relatively simple device structure through modular design and standardized components.
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 configuration increases the ratio of electromagnetic waves acting on the food, improving thawing efficiency and reducing the risk of antenna damage, while simplifying the assembly process and ensuring uniform energy distribution for quicker heating.
Implementation Method 1
a radiating antenna (150) disposed in the cylinder body (110) and electrically connected with the electromagnetic generating module (161) to generate electromagnetic waves of corresponding frequencies according to the electromagnetic wave signals, so as to heat the object to be processed in the cylinder body (110)
Implementation Method 2
both the drawer (140) and the antenna housing (130) are made of a PP material... the absorption amount of the electromagnetic waves by the plastic components is reduced
Data Source
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AI summary
Disclosed is a heating device (100), including a cylinder body (110) provided with a pick-and-place opening, a door body (120) configured to open and close the pick-and-place opening, and an electromagnetic generating system. At least a part of the electromagnetic generating system is disposed in the cylinder body (110) or accessed into the cylinder body (110), so as to generate electromagnetic waves in the cylinder body (110) to heat an object to be processed. The heating device (100) further includes plastic components (130, 140) disposed on a propagation path of the electromagnetic waves. The plastic components (130, 140) are made of a non-transparent PP material to reduce the electromagnetic loss of the electromagnetic waves on the plastic components (130, 140) so as to indirectly increase the ratio of the electromagnetic waves acting on the object to be processed, thereby increasing the heating rate of the object to be processed.