Refrigerator Heating Cavity Layout for Cooling the External Power Module
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Solution Overview
Problem
Existing refrigerating and freezing devices face challenges in efficiently heating food without causing moisture loss or uneven heating, and their power supply modules are prone to overheating and moisture damage, affecting efficiency and safety.
Innovation Solution
A refrigerating and freezing device with an electromagnetic heating system that includes a power supply module located outside the cabinet, utilizing heat dissipation holes and a fan for efficient cooling, and a water retaining rib to prevent moisture ingress, ensuring high space utilization and safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the power supply module is disposed inside the cabinet, then the device structure is compact, but the heating space is reduced and heat dissipation is difficult
Solution Approach 1:
The power supply module is extracted from the cabinet interior and disposed in the space above the cabinet. This separation removes the power supply module from the heating space, maximizing the available heating volume while maintaining a compact overall device structure through external placement.
2Productivity
If the power supply module operates continuously, then the heating function is sustained, but the power supply module overheats and efficiency decreases
Solution Approach 1:
The heat generated by the power supply module during continuous operation is converted from a harmful factor into a beneficial one by using it for hot air circulation. The heat dissipation fan draws air through the power supply module, utilizing its heat to pre-warm the air before it enters the heating cavity, thereby maintaining heating function while managing temperature through productive heat reuse.
3Temperature
If the power supply box is open for heat dissipation, then heat dissipation efficiency is improved, but moisture and dust can enter and affect the power supply module
Solution Approach 1:
The power supply box employs a semi-enclosed structure with heat dissipation holes that allow thermal exchange while providing environmental protection. The box body acts as a flexible barrier that permits heat dissipation through controlled openings while preventing direct ingress of moisture and dust to the power supply module, balancing heat dissipation efficiency with component protection.
4Productivity
If a heating device is disposed in the refrigerator to heat food, then heating function is added, but heating time is long and food quality is lost
Solution Approach 1:
The conventional resistive heating device is replaced with an electromagnetic heating system that generates electromagnetic waves to directly heat food molecules. This substitution enables rapid and uniform heating throughout the food, significantly reducing heating time while preserving food quality by avoiding the moisture loss and juice loss associated with traditional heating methods.
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 rapid and uniform heating of food while maintaining high space efficiency and preventing power supply module overheating and moisture damage, thereby extending its service life and ensuring user safety.
Implementation Method 1
an electromagnetic heating device, configured to supply electromagnetic waves into the heating cavity so as to heat the to-be-processed object in the heating cavity
Implementation Method 2
a heat dissipation fan is further provided in the power supply box and is configured to drive airflow to flow between the interior of the power supply box and an external environment where the power supply box is located through the heat dissipation holes, so as to dissipate heat from the power supply module
Data Source
AI summary
A refrigerating and freezing device (1) includes a cabinet, wherein at least one storage compartment (11) is defined therein, and a heating cavity is defined in one of the storage compartments (11); and an electromagnetic heating device, configured to supply electromagnetic waves into the heating cavity so as to heat a to-be-processed object, wherein the electromagnetic heating device is provided with an electromagnetic generation module (21) configured to produce an electromagnetic wave signal and a power supply module (24) configured to supply a power source to the electromagnetic generation module (21). A power supply box (40) is provided above a top of the cabinet (10), and heat dissipation holes configured to achieve communication between the interior of the power supply box (40) and an external environment where the power supply box (40) is located are provided in a box body of the power supply box (40). The power supply module (24) is disposed in the power supply box (40), a heat dissipation fan (31) is further provided in the power supply box (40) and is configured to drive airflow to flow between the interior of the power supply box (40) and the external environment where the power supply box (40) is located through the heat dissipation holes, so as to dissipate heat from the power supply module (24). The decrease of service life and efficiency caused by temperature rise during continuous working of the power supply module (24) and burn hazards caused by unintentional touch by users are completely eradicated, and meanwhile space is saved.