Built-In Refrigerator Airflow Guide for Low-Resistance Condenser Cooling
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Solution Overview
Problem
Built-in refrigerators face challenges in achieving efficient air flow and heat exchange due to high pneumatic resistance in their machine rooms, which are exacerbated by the axial flow fans used for air induction and discharge, limiting the formation of an efficient air-flowing channel.
Innovation Solution
The radiating apparatus modifies the machine room by partitioning it into a compressor section and a condenser section using an airflow guide, with a cross flow fan positioned above the condenser, and an airflow guide curved upwardly to separate the condenser and blower fan, allowing for improved airflow and reduced pneumatic resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an axial flow fan is used for air induction and discharge in the machine room, then the structure is simple, but the pneumatic resistance is high and efficient air-flowing channel formation is limited
Solution Approach 1:
The machine room is divided into a suction section and a discharge section using a partition wall, creating separate air flow paths. This segmentation allows the cross flow fan to efficiently induce air in one section while discharging it in another, reducing pneumatic resistance and improving heat exchange efficiency without requiring a completely different fan structure.
Solution Approach 2:
The patent transitions from axial flow (one-dimensional) to cross flow (two-dimensional) air movement. The cross flow fan creates air flow in a direction perpendicular to the fan axis, enabling more efficient utilization of the machine room space and creating better air circulation patterns that reduce pneumatic resistance while maintaining structural simplicity.
2Productivity
If the machine room is partitioned into compressor section and condenser section, then heat exchange efficiency is improved, but device complexity increases
Solution Approach 1:
The machine room is divided into a suction section containing the compressor and a discharge section containing the condenser using a partition wall with air holes. This segmentation improves heat exchange efficiency by separating air intake and discharge paths, while the partition wall with holes maintains structural simplicity by using a single component that serves both separation and air flow functions.
3Productivity
If air flow channels are formed through the machine room, then cooling performance is improved, but pneumatic resistance increases due to installation constraints
Solution Approach 1:
A cross flow fan is introduced as an intermediary device between the suction section and discharge section. This fan type creates efficient air circulation patterns that reduce pneumatic resistance compared to axial flow fans, while still achieving the required cooling performance through improved air flow management in the constrained built-in installation 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 enhances heat exchange efficiency by separating inflow and outflow air streams, reducing pneumatic resistance, and facilitating efficient air flow through the machine room, thereby improving the overall cooling performance of the built-in refrigerator.
Implementation Method 1
a condenser 24 in which heat is exchanged between the refrigerant and the introduced ambient air
Implementation Method 2
a blower fan 25 mounted at a front and/or a back of the condenser 24 for inducing the introduced ambient air
Data Source
AI summary
A radiating apparatus of a built-in refrigerator includes an airflow guide that separates a condenser from a blower fan in order to prevent a cool air and a hot air from mixing together, thereby increasing an efficiency of the built-in refrigerator.