Refrigerator Multi-Duct Structure for Direct Door Container Cooling
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Solution Overview
Problem
Conventional refrigerator duct structures face challenges in smoothly supplying cool air to container spaces on the door side due to obstructions from shelves and food, leading to temperature gaps between the internal refrigerator space and the door-side container space.
Innovation Solution
A duct structure featuring a multi-duct system with a connecting outlet, connecting duct, and nozzle unit that directs cool air directly to the container space without passing through the internal refrigerator space, utilizing partitioning portions and refraction components to enhance airflow and maintain constant temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If cool air is supplied through the internal space of the refrigerator to the container space, then the existing duct structure is simple, but the temperature gap between internal space and container space occurs due to obstructions from shelves and food
Solution Approach 1:
The duct system is segmented into multiple components: a rear duct positioned at the rear of the cabinet, a connecting duct linking the rear duct to the container space, and a nozzle unit for direct air discharge. This segmentation allows cool air to be delivered directly to the container space without passing through the internal refrigerator space, eliminating temperature gaps caused by shelves and food obstructions.
2Reliability
If a partition cover is installed to prevent cool air outflow when the inner door is opened, then cool air retention is improved, but the opening size is reduced and direct cool air supply to container space is hindered
Solution Approach 1:
The cool air supply path is extracted and separated from the internal refrigerator space. The rear duct and connecting duct create an independent air delivery system that bypasses the partition cover, allowing direct supply of cool air to the container space regardless of the partition cover's presence or opening size.
3Quantity of substance
If food is stored in the refrigerator, then storage capacity is improved, but food obstructs the cool air flow and prevents smooth supply to container space
Solution Approach 1:
The connecting duct acts as an intermediary channel that bridges the rear duct and the container space. This intermediary structure allows cool air to flow directly from the rear of the cabinet to the container space, bypassing the food-stored internal space and eliminating flow obstruction issues.
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
Ensures uniform and efficient cool air supply to container spaces, reducing temperature gaps and extending food storage periods by maintaining a consistent temperature, while allowing for easy installation and compatibility with various refrigerator designs.
Implementation Method 1
a multi-duct which is provided in a rear space in the internal space of the refrigerator and which discharges cool air into the internal space of the refrigerator while allowing air to flow upward
Implementation Method 2
a nozzle unit which is provided in a lower portion of the front duct and which discharges cool air into the container space of door
Data Source
AI summary
A duct structure of a refrigerator equipped with a door provided with a container space separated from an internal space of the refrigerator comprises: a multi-duct which is provided in a rear space in the internal space of the refrigerator and which discharges cool air into the internal space of the refrigerator while allowing air to flow upward; a connecting outlet which is provided in an upper end of the multi-duct; a connecting duct which communicates with the connecting outlet and which is extended in a front-rear direction; a front duct which is connected to a front end of the connecting duct and which is extended in a left-right direction; and a nozzle unit which is provided in a lower portion of the front duct and which discharges cool air into the container space of door.