Refrigerator Air Bypass Control for Independent Compartment Cooling

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional refrigerators require auxiliary evaporators and complex control methods to independently control cooling and storage compartments, leading to increased production costs and complexity.

Innovation Solution

A refrigerator design with a partitioned cool air generation compartment and a bypass path allows independent temperature control of the storage compartment using a cooler, fan, damper, and cool air control unit, enabling efficient and reliable operation of both compartments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an auxiliary evaporator and auxiliary control units are added to independently control the storage compartment, then independent temperature control capability is improved, but production cost and device complexity increase

Engineering Contradiction:
Improveindependent temperature control capabilityVSAvoidcontrol system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The main evaporator is designed to serve dual purposes: cooling both the cooling compartment and the storage compartment independently. By strategically positioning the evaporator and using a partition plate with controlled air flow paths, a single evaporator replaces what would traditionally require two separate evaporators, thereby reducing device complexity while maintaining independent temperature control capability

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

Solution Approach 2:

The cooling compartment is divided into two independent air flow zones using a partition plate. The partition plate includes a first air flow path for the cooling compartment and a second air flow path for the storage compartment, allowing independent temperature control through separate dampers while sharing a common evaporator

Inventive Principle:
Principle #1Segmentation

2Measurement precision

If multiple dampers and control units are installed for independent compartment control, then temperature adjustment precision is improved, but device complexity and production cost increase

Engineering Contradiction:
Improvetemperature adjustment precisionVSAvoidnumber of control components
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The main evaporator serves multiple functions by providing cooled air to both the cooling compartment and the storage compartment through separate air flow paths. This multi-functional design achieves precise temperature control for both compartments while minimizing the number of control components

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

Solution Approach 2:

The partition plate includes controllable dampers that dynamically adjust the air flow distribution between the cooling compartment and the storage compartment. These dampers can be opened or closed to regulate the amount of cold air supplied to each compartment, enabling flexible and precise temperature adjustment without requiring separate evaporators

Inventive Principle:
Principle #15Dynamics

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 allows for high refrigerator operation efficiency and reliable storage of various cooling objects by independently adjusting temperatures in both the cooling and storage compartments.

Implementation Method 1

a cooler (21) provided in the cool air generation compartment (20) to generate cool air

Methodology Applied
Scientific EffectRefrigeration cycle:

Implementation Method 2

a fan (141) provided at the partition plate (100) to move the cool air generated by the cooler (21)

Methodology Applied
Scientific EffectForced convection: Forced Convection

Implementation Method 3

a damper (130) provided at the main path (110) to control the flow of the cool air to the cooling compartment (10)

Methodology Applied
Scientific EffectFlow control:

Implementation Method 4

a cool air control unit (150) installed at the bypass path (120) to control the bypass path (120)

Methodology Applied
Scientific EffectBypass flow control:

Implementation Method 5

a partition plate (100) to partition space into the cooling compartment (10) and the cool air generation compartment (20)

Methodology Applied
Scientific EffectPhysical partitioning: Physical Containment

Data Source

PatentEP2142864B1A refrigerator and a control method for the same
Publication Date: 2017.03.22 LG ELECTRONICS INC
  • EP2142864B1 patent drawing
  • EP2142864B1 patent drawing
  • EP2142864B1 patent drawing

AI summary

A refrigerator and a control method for the same are disclosed. A refrigerator includes a body comprising a cooling compartment (10) and a storage compartment (10) provided in the cooling compartment (10) to form a predetermined cooling space, a cool air generation compartment (20) comprising a cooler and a fan to supply cool air, a partition plate (100) to partition a predetermined space into the cooling compartment (10) and the cool air generation compartment (20), the partition plate (100) comprising a main path to guide the cool air into the cooling compartment (10) and a bypass path (120) to guide the cool air into the storage compartment (30), and a cool air control unit (100) provided at the bypass path (120) to control the cool air supplied to the storage compartment (30) via the bypass path (120).