Heating device and refrigerator with heating device
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Solution Overview
Problem
Existing electromagnetic wave heating devices for thawing food face inefficiencies due to varying dielectric coefficients of foods with different attributes and temperature changes, leading to fluctuating absorption rates and potential safety hazards.
Innovation Solution
A heating device with a grounded metal cylinder body, integrated signal processing and measurement circuit, and adjustable load impedance to optimize electromagnetic wave absorption, combined with a refrigerator design that separates heating and electrical components to enhance safety and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If the signal processing and measurement and control circuit is disposed at the rear lower part in the cylinder body, then the storage space is increased, but the circuit may be damaged by high temperature from food
Solution Approach 1:
The interior space of the cylinder body is segmented into two distinct chambers: a heating chamber for placing food and an electrical appliance chamber for housing the circuit board. This spatial segmentation isolates the temperature-sensitive circuit from the high-temperature heating environment while maximizing storage capacity.
Solution Approach 2:
The signal processing and measurement and control circuit is extracted from the general heating environment and specifically placed in the electrical appliance chamber, which is thermally separated from the heating chamber. This extraction protects the circuit from thermal damage while maintaining device functionality.
2Reliability
If the cylinder body is made of metal and grounded, then safety is improved by discharging electrostatic charges, but the device complexity increases
Solution Approach 1:
The metal cylinder body itself serves dual functions: as the structural container and as the grounding path for electrostatic discharge. By utilizing the inherent conductive properties of the metal material and providing a grounding connection, the system achieves safety functionality without requiring separate active safety mechanisms.
Solution Approach 2:
The metal cylinder body performs multiple functions simultaneously: it provides structural support, contains the heating chamber, and acts as a grounding element for electrostatic discharge. This multi-functionality reduces the need for additional safety components and simplifies the overall device structure.
3Reliability
If the housing separates the heating chamber and electrical appliance chamber, then the circuit is protected from high temperature, but the device complexity increases
Solution Approach 1:
The housing is segmented into distinct functional chambers: a heating chamber for food processing and an electrical appliance chamber for housing sensitive electronics. This segmentation creates thermal isolation while maintaining a compact overall structure, protecting circuits from heat without requiring complex active cooling systems.
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 provides a large storage space, improved heating efficiency, and safety by optimizing electromagnetic wave absorption and discharging electrostatic charges, ensuring uniform heating and preventing circuit damage.
Implementation Method 1
the dielectric coefficients of foods with different attributes are different, but the dielectric coefficients of foods with the same attributes will also change as the temperature changes during the thawing process, so that the absorption rate of electromagnetic waves by the foods fluctuates up and down
Implementation Method 2
the cylinder body is made of a metal and is configured to be grounded; and the heating device further includes: a metal bracket, configured to connect the circuit board and the cylinder body
Data Source
AI summary
Provided is a heating device and a refrigerator. The heating device includes a cylinder body provided with a pick-and-place opening, a door body configured to open and close the pick-and-place opening, an electromagnetic generating module configured to generate an electromagnetic wave signal, and a radiating antenna. The radiating antenna is configured to be electrically connected with the electromagnetic generating module to generate electromagnetic waves of a corresponding frequency according to the electromagnetic wave signal. The heating device further includes a signal processing and measurement and control circuit for measurement and control processing of the electromagnetic wave signal. The signal processing and measurement and control circuit is configured to be electrically connected with the electromagnetic generating module and is disposed at a rear lower part in the cylinder body.