Gas-liquid separation device for vehicle

Solution Overview

Problem

Conventional vehicle air conditioning systems face increased manufacturing costs and complex pipe layouts due to the need for separate components like receiver driers and accumulators, which complicate space usage in small engine compartments.

Innovation Solution

A gas-liquid separation device that separates refrigerants into gas and liquid phases within a compact housing, using a guide pipe and refrigerant guider to prevent liquid refrigerant from entering the gas flow space, allowing selective supply to the compressor and condenser, thereby reducing the number of components and simplifying the layout.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate receiver drier and accumulator are provided, then refrigerant separation function is improved, but device complexity increases

Engineering Contradiction:
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the functions of the receiver drier and accumulator into a single integrated housing. The housing contains both liquid refrigerant storage and gas refrigerant storage spaces, with a refrigerant guider that directs refrigerant flow to separate liquid and gas phases. This merging eliminates the need for separate components while maintaining the refrigerant separation function.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If separate receiver drier and accumulator are provided, then refrigerant separation function is improved, but manufacturing cost increases

Engineering Contradiction:
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent combines the functions of the receiver drier and accumulator into a single integrated housing. The housing contains both liquid refrigerant storage and gas refrigerant storage spaces, with a refrigerant guider that directs refrigerant flow to separate liquid and gas phases. This merging eliminates the need for separate components while maintaining the refrigerant separation function.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If separate receiver drier and accumulator are provided, then refrigerant separation function is improved, but ease of operation worsens

Engineering Contradiction:
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent combines the functions of the receiver drier and accumulator into a single integrated housing. The housing contains both liquid refrigerant storage and gas refrigerant storage spaces, with a refrigerant guider that directs refrigerant flow to separate liquid and gas phases. This merging eliminates the need for separate components while maintaining the refrigerant separation function.

Inventive Principle:
Principle #5Merging (Combining)

4Volume of moving object

If refrigerant storage diameter is reduced, then space usage is improved, but liquid refrigerant storage capacity decreases

Engineering Contradiction:
Core Design Contradiction:
Volume of moving objectVSQuantity of substance

Solution Approach 1:

The patent utilizes the vertical dimension by extending the housing in the height direction rather than increasing diameter. The liquid refrigerant storage space is positioned at the lower portion and extends vertically, allowing adequate storage capacity while maintaining a compact horizontal footprint suitable for vehicle installation.

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

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 effectively separates refrigerants, reducing manufacturing costs and simplifying the air conditioning system layout by integrating the functions of multiple components, while ensuring efficient space usage in tight engine compartments.

Implementation Method 1

a guide pipe having a cylinder shape with an upper surface opened so that the exhaust pipe is inserted into the guide pipe and having a gas refrigerant flow space between an exterior circumference of the exhaust pipe and an interior circumference of the guide pipe; a refrigerant guider disposed on the cover inside the housing to prevent a liquid refrigerant from flowing into the gas refrigerant flow space

Methodology Applied
Scientific EffectDensity difference: Density Gradient

Implementation Method 2

a refrigerant guider disposed on the cover inside the housing to prevent a liquid refrigerant from flowing into the gas refrigerant flow space among a refrigerant flowing into the inlet, and refrigerant guider having a cup shape and fixed to the exhaust pipe

Methodology Applied
Scientific EffectFlow blocking:

Implementation Method 3

a housing of which an upper surface is opened and a lower surface is closed; In the housing, a refrigerant storage may be formed in a predetermined section from a lower end toward an upper part

Methodology Applied
Scientific EffectPhase separation: Phase Change

Data Source

PatentUS11162721B2Gas-liquid separation device for vehicle
Publication Date: 2021.11.02
  • US11162721B2 patent drawing
  • US11162721B2 patent drawing
  • US11162721B2 patent drawing

AI summary

A gas-liquid separation device for a vehicle includes: a housing of which an upper surface is opened and a lower surface is closed; a cover disposed on the upper surface of the housing, and the cover having an outlet disposed at a center region of the cover and an inlet disposed at a portion spaced apart from the center region; an exhaust pipe of which an upper end is connected to the outlet; a guide pipe having a cylinder shape with an upper surface opened and having a gas refrigerant flow space; a mounting cap disposed on the lower surface of the housing; and a refrigerant guider disposed on the cover inside the housing to prevent a liquid refrigerant from flowing into the gas refrigerant flow space among a refrigerant flowing into the inlet.