Three-Port Gas-Liquid Separator for Multi-Mode Air Conditioning

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Solution Overview

Problem

Conventional gas-liquid separation devices in automotive air-conditioning systems are limited by their single inlet and outlet configuration, which restricts their application to specific working modes and does not efficiently handle the varying refrigerant states in cooling and heating modes.

Innovation Solution

A gas-liquid separation device with three ports, allowing for two working states: one inlet and one outlet, and one inlet with two outlets, enabling flexible operation in cooling, heating, and defrosting modes by selectively opening and closing channels to manage gas-liquid two-phase refrigerant separation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a conventional gas-liquid separation device with one inlet and one outlet is used, then the device structure is simple, but the device cannot adapt to different working modes (cooling and heating modes) of the air conditioning system

Engineering Contradiction:
Improveadaptability to different working modesVSAvoiddevice structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The gas-liquid separation device is designed with three ports (first inlet, second inlet, and outlet) and internal flow control mechanisms that enable it to perform gas-liquid separation in multiple working modes including cooling mode and heating mode. The device can selectively receive refrigerant from different inlets based on the working mode and discharge separated gas and liquid through the outlet, making it universally applicable to different air conditioning system configurations without requiring separate devices for each mode.

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

2Adaptability or versatility

If a gas-liquid separation device with three ports is used to enable flexible operation in different modes, then the adaptability to different working modes is improved, but the device structure becomes more complex

Engineering Contradiction:
Improveflexibility in working modesVSAvoidthree-port structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The gas-liquid separation device is divided into distinct functional segments including a first flow control mechanism for controlling refrigerant flow from the first inlet, a second flow control mechanism for controlling refrigerant flow from the second inlet, and a separation chamber for gas-liquid separation. Each segment operates independently and can be controlled based on the specific working mode, allowing flexible operation while maintaining manageable structural complexity through modular functional design.

Inventive Principle:
Principle #1Segmentation

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 device enhances the operational flexibility and efficiency of air conditioning systems by effectively separating refrigerant phases in different modes, improving the heating capacity by up to 35% without requiring supplemental gas enthalpy cycles.

Implementation Method 1

a gas-liquid separation component which separates a gas-liquid two-phase refrigerant

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentEP3936794B1Gas-liquid separating device
Publication Date: 2024.02.07 HANGZHOU SANHUA RES INST CO LTD
  • EP3936794B1 patent drawingFigure 1
  • EP3936794B1 patent drawingFigure 2
  • EP3936794B1 patent drawingFigure 3

AI summary

The present application provides a gas-liquid separating device. The gas-liquid separating device comprises a cylinder body, an outer interface, an adaptor, and a gas-liquid separating piece. The cylinder body has a first cavity, a second cavity, and a third cavity; the first cavity is communicated with the second cavity, and the second cavity is communicated with the third cavity; the outer interface comprises a first interface, a second interface, and a third interface; the first interface is communicated with the first cavity, and the second interface is communicated with the second cavity; the adaptor is at least partially located in the cylinder body, and the third interface is communicated with the third cavity by means of the adaptor; the gas-liquid separating piece is located in the third cavity; wherein when the gas-liquid separating device is in a first working state, the adaptor disconnects the third interface and the third cavity, the first interface is used as an inlet, and the second interface is used as an outlet; when the gas-liquid separating device is in a second working state, the third interface is communicated with the third cavity by means of the adaptor, the second interface is used as an inlet, and the first interface and the third interface are used as an outlet; and the gas-liquid separating piece separates a gas-liquid two-phase refrigerant.