Horizontal Gas-Liquid Separator for Space-Constrained Air Conditioners

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Solution Overview

Problem

Conventional gas-liquid separators for air conditioners, typically vertical in structure, face limitations in space constraints which affect the separation efficiency, leading to suboptimal performance when the tank height is insufficient.

Innovation Solution

A horizontal gas-liquid separator design with a refrigerant inlet pipe that flows from left to right within the housing, turns back after reaching the right side wall, enhancing separation stroke and time, and includes a partition plate to further separate gas and liquid phases, optimizing the positioning of outlets relative to the inlet pipe to prevent entrainment and improve separation efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a vertical gas-liquid separator is used, then the separation effect can be maintained, but the vertical space occupancy increases

Engineering Contradiction:
Improveseparation effectVSAvoidvertical space occupancy
Core Design Contradiction:
ReliabilityVSLength of stationary object

Solution Approach 1:

The patent transforms the traditional vertical gas-liquid separator into a horizontal configuration, changing the primary separation dimension from vertical to horizontal. This dimensional change allows the separator to achieve effective gas-liquid separation while occupying less vertical space, directly resolving the contradiction between maintaining separation effectiveness and reducing vertical footprint.

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

2Length of stationary object

If the tank height is reduced to save space, then the vertical space occupancy decreases, but the gas-liquid separation effect becomes worse

Engineering Contradiction:
Improvetank heightVSAvoidgas-liquid separation effect
Core Design Contradiction:
Length of stationary objectVSReliability

Solution Approach 1:

By switching from vertical to horizontal orientation, the patent extends the separation path in the horizontal dimension while reducing vertical height. The horizontal separator maintains adequate separation length without requiring tall vertical space, thus improving both space utilization and separation effectiveness simultaneously.

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

Solution Approach 2:

The patent modifies key geometric parameters of the separator, including the orientation angle, length-to-diameter ratio, and internal component positioning. These parameter changes optimize the separation performance for horizontal configuration, ensuring effective gas-liquid separation is achieved despite the reduced vertical dimension.

Inventive Principle:
Principle #35Parameter changes

3Duration of action of moving object

If the refrigerant inlet pipe extends far into the cavity, then the separation stroke increases, but the distance from the left sidewall must be carefully controlled

Engineering Contradiction:
Improveseparation strokeVSAvoidpositioning constraints
Core Design Contradiction:
Duration of action of moving objectVSDevice complexity

Solution Approach 1:

The patent establishes specific parameter ranges for the inlet pipe positioning, defining that the distance L3 from the left sidewall must be greater than or equal to both L1 (distance from gas outlet to left sidewall) and L2 (distance from liquid outlet to left sidewall). This parameter optimization ensures adequate separation stroke while maintaining simple positioning requirements.

Inventive Principle:
Principle #35Parameter changes

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

The horizontal design improves gas-liquid separation efficiency and reduces vertical space occupancy, achieving better separation outcomes by increasing the separation stroke and time while maintaining a compact form factor.

Implementation Method 1

enabling separation of gas and liquid mainly depending on the action of gravity

Methodology Applied
Scientific EffectGravity: Gravitation

Implementation Method 2

enabling separation of gas and liquid mainly depending on the action of gravity and centrifugal force

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentEP3502589B1Horizontal gas-liquid separator for air conditioner, and air conditioner
Publication Date: 2020.03.18 GD MIDEA HEATING & VENTILATING EQUIP CO LTD
  • EP3502589B1 patent drawingFigure 1~2
  • EP3502589B1 patent drawingFigure 3~4
  • EP3502589B1 patent drawingFigure 5~6

AI summary

A horizontal gas-liquid separator (100) for an air conditioner includes a housing (10) and a refrigerant inlet pipe (120). The housing (10) defines a cavity (110). The cavity (110) has a gas outlet (111) formed in the top of the cavity (110) and a liquid outlet (112) formed in the bottom of the cavity (110). A minimum distance between the gas outlet (111) and a left sidewall of the cavity (110) is denoted by L1, and a minimum distance between the liquid outlet (112) and the left sidewall of the cavity (110) is denoted by L2. The refrigerant inlet pipe (120) is located on a left side wall of the housing (10) and has an end extending into the cavity (10). A distance between an end face of the end of the refrigerant inlet pipe (120) and the left sidewall of the cavity (110) is denoted by L3, and L3≥L1, L3≥L2.