Entrance refrigerator
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Solution Overview
Problem
Conventional wall-embedded entrance refrigerators face issues such as uneven temperature distribution, discomfort from heat discharge into outdoor corridors, and inefficient heat dissipation, which affect the preservation of food freshness and user convenience.
Innovation Solution
The design incorporates a cold air supply module on both the upper and lower portions of the refrigerator's rear surface, with an external air guide between them, and uses thermoelectric elements for temperature maintenance, ensuring heat is dissipated indoors and minimizing heat re-circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a cooling device is installed on the bottom of the storage compartment, then the structure is simple, but the temperature distribution becomes uneven causing the storage compartment temperature to vary
Solution Approach 1:
The cooling device is divided into multiple independent cooling modules (first cooling module and second cooling module) positioned at different locations (upper and lower portions) of the storage compartment. This segmentation allows cold air to be supplied from multiple points, creating more uniform temperature distribution throughout the storage space while maintaining relatively simple device structure.
Solution Approach 2:
The cooling device transitions from a single-point (bottom-only) cooling approach to a multi-dimensional cooling system with modules distributed both vertically (upper and lower portions) and horizontally (left and right sides). This spatial distribution in multiple dimensions ensures comprehensive coverage and uniform temperature throughout the storage compartment.
2Device complexity
If heat is discharged to the outdoor corridor, then the heat dissipation is simple, but passersby experience discomfort and corridor temperature increases
Solution Approach 1:
A heat dissipation guide structure is introduced as an intermediary element between the heat dissipation fan and the outdoor environment. This guide redirects the heat flow path away from the outdoor corridor, channeling hot air toward the rear or side areas where it will not contact passersby, thereby eliminating the harmful effect of heat discharge to the corridor while maintaining simple heat dissipation functionality.
3Device complexity
If the cold air supply device is disposed on the bottom of the storage compartment, then the device arrangement is simple, but temperature difference occurs between upper and lower sides
Solution Approach 1:
The cold air supply function is segmented into multiple independent modules positioned at both upper and lower portions of the storage compartment. This segmentation eliminates the temperature gradient that would occur with bottom-only cooling, as cold air is now supplied from both upper and lower regions, ensuring uniform temperature distribution vertically and horizontally throughout the storage space.
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 maintains food freshness by ensuring uniform temperature, reduces discomfort for passersby, and enhances heat exchange performance by directing heat dissipation away from outdoor areas, allowing for secure and convenient food delivery and storage.
Implementation Method 1
since the cold air supply module including a thermoelectric element is used as a means for maintaining a temperature inside the refrigerator
Implementation Method 2
a heat dissipation fan of the first cold air supply module and a second heat dissipation fan of the second cold air supply module
Data Source
AI summary
An entrance refrigerator includes an upper first cold air supply on an upper portion and a lower second cold air supply on a lower portion, and an external air guide provided between the upper first cold air supply and the lower second cold air supply.