Linear Compressor Gas Layer Design to Reduce Frame Heat Loss

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Solution Overview

Problem

Linear compressors experience heat loss and reduced compression efficiency due to high temperature and high pressure gases passing through discharge spaces, leading to inefficiencies in refrigerant compression.

Innovation Solution

A compressor design featuring a gas layer formed between the discharge cover assembly and the frame, which includes a series of parallel and vertical portions with low thermal conductivity, minimizing heat transfer and maintaining efficient compression by preventing direct contact between high temperature gases and the frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If high temperature and high pressure gas passes through the discharge space, then the gas is discharged from the compression chamber, but heat transfer to the frame occurs causing heat loss and reduced compression efficiency

Engineering Contradiction:
Improvecompression efficiencyVSAvoidheat loss
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The patent introduces a discharge cover assembly as an intermediary component between the high temperature discharge gas and the frame. This assembly includes a discharge space that guides the gas flow and prevents direct contact between the hot gas and the frame, thereby reducing heat transfer to the frame while maintaining discharge functionality

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent extracts the discharge cover assembly as a separate functional component from the frame structure. By separating the discharge gas pathway from the frame, the design eliminates the direct thermal coupling that causes heat loss, allowing the frame to remain cooler while the discharge gas is efficiently routed to the discharge port

Inventive Principle:
Principle #2Taking out (Extraction)

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 gas layer effectively reduces heat transfer to the frame, thereby preventing heat loss and enhancing compression efficiency by maintaining a thermal barrier between the high temperature gases and the compressor's frame.

Implementation Method 1

a gas layer is formed between the discharge cover assembly and the frame... a series of parallel and vertical portions with low thermal conductivity, minimizing heat transfer

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentUS11359617B2Compressor
Publication Date: 2022.06.14 LG ELECTRONICS INC
  • US11359617B2 patent drawing
  • US11359617B2 patent drawing
  • US11359617B2 patent drawing

AI summary

A compressor is disclosed. The compressor compressing and discharging a refrigerant sucked inside a cylinder includes a frame configured to support the cylinder, and a discharge cover assembly disposed in front of the frame. A gas layer is formed between the discharge cover assembly and the frame.