Refrigerant Distribution Unit Layout for Shorter Air Conditioner Piping

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Solution Overview

Problem

The installation of a distribution unit in air conditioners requires refrigerant pipes to be bent multiple times, leading to increased flow resistance and poor energy efficiency, and the complex, lengthy pipe arrangement results in a poor exterior appearance and higher costs.

Innovation Solution

A distribution unit that can be installed in any direction relative to the indoor units, allowing for flexible mounting positions and detachment from the outdoor unit, with a design that includes a recess in the outdoor unit housing for the distribution unit, minimizing pipe lengths and simplifying the pipe arrangement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the distribution unit is fixed to the outdoor unit, then the refrigerant pipe lines become complicate and lengthy, but the connection between distribution unit and outdoor unit is stable

Engineering Contradiction:
Improverefrigerant pipe line complexityVSAvoidconnection stability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The distribution unit is separated from the outdoor unit, allowing independent positioning. The refrigerant pipes are divided into separate segments that can be routed independently, reducing overall complexity while maintaining connection integrity through standardized interfaces.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The distribution unit is made movable relative to the outdoor unit, enabling flexible installation in various directions. This dynamic positioning capability allows optimization of pipe routing to minimize bends and length, while connection stability is maintained through robust coupling mechanisms.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If the refrigerant pipe is bent multiple times to connect the distribution unit to the indoor unit, then the connection is achieved, but the flow resistance increases and energy efficiency decreases

Engineering Contradiction:
Improveinstallation flexibilityVSAvoidrefrigerant energy efficiency
Core Design Contradiction:
Ease of operationVSLoss of energy

Solution Approach 1:

The distribution unit can be positioned dynamically in various directions relative to the outdoor unit and indoor units. This flexibility enables direct, short pipe routing without multiple bends, minimizing flow resistance and energy loss while maintaining ease of installation in different spatial configurations.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The distribution unit is positioned in three-dimensional space around the outdoor unit, utilizing vertical and lateral dimensions to achieve direct pipe connections. This spatial optimization eliminates the need for multiple horizontal bends, reducing refrigerant flow resistance and improving energy efficiency.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Adaptability or versatility

If the distribution unit is installed in a direction different from the indoor unit installation direction, then the mounting flexibility is improved, but the refrigerant pipe line becomes lengthy and complicated

Engineering Contradiction:
Improvemounting direction flexibilityVSAvoidrefrigerant pipe length
Core Design Contradiction:
Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

The distribution unit can be mounted in any direction relative to the outdoor unit, providing adaptability to different indoor unit configurations. The movable design allows the distribution unit to be oriented optimally to minimize pipe length, regardless of the indoor unit installation direction.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The distribution unit is designed with universal mounting capabilities that work with various indoor unit positions and orientations. This multi-functional design allows the same distribution unit to be installed in different directions and locations, optimizing pipe routing for each specific configuration without increasing pipe length.

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

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 solution reduces refrigerant flow resistance, minimizes pipe lengths, and improves the appearance and cost-effectiveness of the air conditioning system by allowing the distribution unit to be mounted in various spaces without restriction.

Implementation Method 1

The outdoor unit is provided with an outdoor unit heat exchanger for making the refrigerant to heat exchange with the outside air where the outdoor unit is installed

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Implementation Method 2

the refrigerant circulating the indoor units is collected to the same outdoor unit and distributed to the indoor units through a compression process

Methodology Applied
Scientific EffectCompression: Compression

Data Source

PatentEP2402671B1Air conditioner and outdoor unit
Publication Date: 2018.06.06 LG ELECTRONICS INC
  • EP2402671B1 patent drawingFigure 1
  • EP2402671B1 patent drawingFigure 2(a)~2(b)
  • EP2402671B1 patent drawingFigure 3(a)~3(b)

AI summary

The present invention relates to an air conditioner and to an outdoor unit. More particularly, the present invention relates to an air conditioner having a plurality of indoor units, wherein said air conditioner comprises a distribution unit which is accommodated in an outdoor unit of the air conditioner and connected to the outdoor unit and indoor units, or which is separated from the outdoor unit and connected to the outdoor unit and indoor units to distribute refrigerant to the plurality of indoor units.