Integrated Cylindrical Compressor Housing Design

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Solution Overview

Problem

Screw compressor systems require precision manufacturing and multiple housings, leading to increased costs, complexity, and leakage risks due to numerous seals and alignment challenges.

Innovation Solution

A single, cylindrical housing integrates the motor, compression mechanism, and oil separator with a frictional connection to prevent relative movement, allowing for simplified assembly and reduced component complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple separate housings are used for motor and compressor, then functional modularity is improved, but device complexity and manufacturing precision requirements increase

Engineering Contradiction:

Improvefunctional modularityVSAvoidhousing structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines the motor housing and compressor housing into a single integrated housing structure. The motor mounting flange is formed as an integral part of the compressor housing, eliminating the need for separate housings and reducing overall system complexity while maintaining functional modularity through internal compartmentalization.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated housing serves multiple functions simultaneously: it provides structural support for both motor and compressor, acts as a mounting structure for the drive shaft, and serves as a seal chamber for refrigerant containment. This multi-functionality reduces the number of separate components needed.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple separate housings are used, then functional modularity is improved, but manufacturing precision and assembly complexity increase

Engineering Contradiction:

Improvefunctional modularityVSAvoidhousing alignment precision

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

By merging the motor housing and compressor housing into a single monolithic structure, the patent eliminates alignment precision requirements between separate housings. The integrated design ensures proper positioning of motor and compressor components without requiring precision machining of multiple separate parts and their precise assembly.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If multiple seals are used in separate housings, then fluid containment is improved, but leakage risk and system complexity increase

Engineering Contradiction:

Improvefluid containmentVSAvoidseal quantity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The integrated housing creates a single continuous seal chamber that contains refrigerant throughout the entire assembly. This eliminates the need for multiple seals at multiple locations, reducing leakage points while maintaining effective fluid containment through the unified sealed environment.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts and eliminates the need for multiple separate seals by designing an integrated housing structure that provides continuous fluid containment through its monolithic construction, removing the complexity of multiple sealing elements while maintaining reliability.

Inventive Principle:

Principle #2Taking out (Extraction)

4Adaptability or versatility

If separate housings are used, then functional modularity is improved, but support and alignment features increase complexity

Engineering Contradiction:

Improvefunctional modularityVSAvoidsupport and alignment features

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The integrated housing incorporates all necessary support and alignment features directly into its monolithic structure. The motor mounting flange and compressor mounting surfaces are formed as integral features, eliminating the need for separate support structures and alignment mechanisms that would be required for assembling multiple separate housings.

Inventive Principle:

Principle #5Merging (Combining)

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

This design reduces production costs, minimizes leakage risks, and enables smaller compressor size, facilitating automated manufacturing and lower material and transportation costs.

Implementation Method 1

The motor housing and the compressor housing are connected to the housing with a frictional connection to prevent axial movement of the motor housing and the compressor housing in the housing

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 2

The second housing is connected to the third housing to prevent relative rotational movement between the second housing and the third housing

Methodology Applied

Scientific EffectMechanical Interlocking: Mechanical Fastener

Data Source

PatentUS8475151B2Compressor

Publication Date: 2013.07.02 TYCO FIRE & SECURITY GMBH

AI summary

A compressor is provided with a substantially cylindrical housing. Inside the housing is a motor housing having a substantially cylindrical shape and a compressor housing having a substantially cylindrical shape. The motor housing and the compressor housing are connected or fit into the housing with a frictional connection to prevent axial movement of the motor housing and the compressor housing.