Hermetic Compressor Suction Muffler Flow Distribution

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Solution Overview

Problem

Current suction acoustic filters in hermetic compressors often have outlet pipes with a single hole, which can lead to uneven fluid distribution and pulsation, affecting efficiency and noise reduction.

Innovation Solution

The suction acoustic filter features multiple independent outlet holes, each with its own tubular extension, spaced by a wall and optionally varying in length and curvature, to ensure balanced fluid flow to suction valves.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single outlet hole is used in the suction acoustic filter, then the device complexity is reduced, but the fluid flow distribution becomes uneven and pulsation increases

Engineering Contradiction:

Improveoutlet pipe structureVSAvoidsuction flow distribution

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The outlet pipe is segmented into multiple independent outlet holes (at least two), each with its own tubular extension. This segmentation allows the suction flow to be divided into separate streams that reach different suction valves independently, eliminating the uneven distribution and pulsation problems associated with a single outlet hole while maintaining manageable device complexity.

Inventive Principle:

Principle #1Segmentation

2Productivity

If multiple outlet holes are provided in the suction acoustic filter, then the suction capacity and fluid flow distribution are improved, but the device complexity increases

Engineering Contradiction:

Improvesuction capacityVSAvoidoutlet pipe structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

Multiple outlet holes and their corresponding tubular extensions are merged into a single integrated outlet pipe structure. This combining approach allows the system to achieve enhanced suction capacity and improved fluid flow distribution through multiple openings while avoiding the complexity of completely separate pipe assemblies, as all components are unified within one outlet pipe.

Inventive Principle:

Principle #5Merging (Combining)

3Volume of moving object

If the tubular extensions of outlet holes are arranged closely, then the device compactness is improved, but the fluid flow from one hole can impair the fluid flow from another hole

Engineering Contradiction:

Improveacoustic filter volumeVSAvoidfluid flow independence

Core Design Contradiction:

Volume of moving objectVSProductivity

Solution Approach 1:

The tubular extensions are designed with differentiated local characteristics, including varying lengths and curvatures, rather than uniform identical structures. This local quality variation ensures that each tubular extension operates with sufficient flow independence while maintaining overall compactness, preventing the fluid flow from one outlet hole from interfering with another.

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP3047145B1Suction muffler for hermetic compressor

Publication Date: 2019.11.27 EMBRACO IND DE COMPRESSORES E SOLUCOES EM REFRIGERACAO LTDA

Figure 1~2

AI summary

Suction muffler (1) for hermetic compressor comprises at least one inlet pipe (2) having at least two independent suction inlets (21). Each independent suction inlet (21) extending along the inlet pipe (2). The independent suction inlets (21) are spaced apart by at least one wall (4). The tubular extensions (22) of each suction independent inlet (21) are isolated from each other by at least one vertical projection (3) arranged along the inlet pipe (2).