Refrigerator Bypass Duct Cooling for Independent Storage Chambers

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Solution Overview

Problem

The high manufacturing costs and complexity of independently controlling the storage chamber in refrigerators, often requiring additional evaporators or multiple apparatuses, lead to potential malfunctions and increased structural complexity.

Innovation Solution

A refrigerator design featuring a partition plate with a main flow channel and bypass ducts that allow cool air to be selectively directed between the cold chamber and storage chamber, eliminating the need for an additional evaporator and simplifying control mechanisms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an additional evaporator is provided to independently control the storage chamber, then the storage chamber can be cooled independently, but the manufacturing cost increases

Engineering Contradiction:
Improveindependent cooling controlVSAvoidmanufacturing cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The single evaporator is designed to serve multiple functions: cooling the cold chamber through the cold air circulation channel and cooling the storage chamber through the storage chamber air circulation channel. This multi-functionality eliminates the need for an additional evaporator while maintaining independent cooling control for both chambers.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The air circulation system is segmented into separate channels: a cold air circulation channel for the cold chamber and a storage chamber air circulation channel for the storage chamber. This segmentation allows independent temperature control for each chamber using a single evaporator, avoiding the need for additional cooling components.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If an additional evaporator is provided to independently control the storage chamber, then the storage chamber can be cooled independently, but the device complexity increases

Engineering Contradiction:
Improveindependent cooling controlVSAvoidapparatus structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The single evaporator is designed to serve multiple functions: cooling the cold chamber through the cold air circulation channel and cooling the storage chamber through the storage chamber air circulation channel. This multi-functionality eliminates the need for an additional evaporator while maintaining independent cooling control for both chambers.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The air circulation system is segmented into separate channels: a cold air circulation channel for the cold chamber and a storage chamber air circulation channel for the storage chamber. This segmentation allows independent temperature control for each chamber using a single evaporator, avoiding the need for additional cooling components.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If a cooler and fan are used to independently control the storage chamber, then the storage chamber can be cooled, but the device complexity increases

Engineering Contradiction:
Improveindependent cooling controlVSAvoidapparatus structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The cooling functions for both the cold chamber and storage chamber are merged into a single evaporator system. The evaporator connects to both chambers through separate circulation channels, eliminating the need for separate coolers and reducing overall device complexity while maintaining independent cooling capability.

Inventive Principle:
Principle #5Merging (Combining)

4Adaptability or versatility

If an additional evaporator is provided, then the storage chamber can be cooled independently, but the risk of malfunction increases

Engineering Contradiction:
Improveindependent cooling controlVSAvoidmalfunction risk
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The single evaporator is designed to serve multiple functions: cooling the cold chamber through the cold air circulation channel and cooling the storage chamber through the storage chamber air circulation channel. This multi-functionality eliminates the need for an additional evaporator while maintaining independent cooling control for both chambers.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses a single evaporator that can independently serve both chambers through controlled air circulation channels, reducing the number of components that could potentially malfunction. The simplified structure with fewer parts directly connected to the refrigeration cycle improves overall system reliability.

Inventive Principle:
Principle #25Self-service

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 design enables independent operation of the storage chamber without additional evaporators, maintaining uniform temperature in both chambers and reducing the risk of malfunction, while lowering manufacturing costs and simplifying the control process.

Implementation Method 1

a refrigerator is an appliance that is capable of preserving foods at low temperature for a long time through the supply of cool air, generated by a refrigeration cycle apparatus including a compressor and a heat exchanger

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Implementation Method 2

a cool air generation chamber having a cooler and a fan for supplying cool air mounted therein

Methodology Applied
Scientific EffectForced convection: Forced Convection

Data Source

PatentUS8984908B2Refrigerator
Publication Date: 2015.03.24 LG ELECTRONICS INC
  • US8984908B2 patent drawing
  • US8984908B2 patent drawing
  • US8984908B2 patent drawing

AI summary

A refrigerator that is capable of easily operating a storage chamber (30) where cooling is carried out independently from a cold chamber (10) is disclosed. The refrigerator includes a refrigerator body having a cold chamber (10) defined therein and a storage chamber (30) disposed in the cold chamber, a cool air generation chamber having a cooler and a fan (102) for supplying cool air mounted therein, a partition plate for partitioning the cold chamber (10) and the cool air generation chamber from each other, the partition plate having a main flow channel (103) for guiding the cool air supplied by the fan (102) to the cold chamber (10) and at least one cool air hole (201) located between the fan (102) and the main flow channel (103) for bypassing the cool air, and at least one bypass duct (200) for guiding the cool air bypassed through the at least one cool air hole (201) to the storage chamber (30).