Compressor Suction Fitting with Dual-Opening Fluid Distribution

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Solution Overview

Problem

Existing compressors in climate-control systems face inefficiencies in directing and managing working fluid flow, particularly in distributing it effectively between the compression mechanism and the motor, which can impact the system's cooling and heating performance.

Innovation Solution

The compressor design incorporates a suction fitting with strategically positioned openings and an axial end wall that deflects working fluid towards both the compression mechanism and the motor, allowing for efficient fluid distribution and reducing assembly complexity by integrating the suction fitting directly with the shell assembly at various angular orientations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a traditional suction fitting design is used, then the structure is simple, but the working fluid flow distribution between compression mechanism and motor is inefficient

Engineering Contradiction:
Improveworking fluid flow distribution efficiencyVSAvoidsuction fitting structure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The suction fitting is segmented into multiple functional openings (first opening for compression mechanism, second opening for motor) to enable separate and optimized fluid flow paths to different components, improving overall system efficiency without requiring entirely separate fitting structures

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The suction fitting is designed as a multi-functional component that simultaneously serves multiple purposes: directing fluid to the compression mechanism through the first opening, directing fluid to the motor through the second opening, and integrating with the shell assembly. This universal component replaces what would traditionally require multiple separate parts

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

2Productivity

If separate suction fittings are used for compression mechanism and motor, then the fluid flow distribution is optimized, but the assembly complexity and time increase

Engineering Contradiction:
Improvefluid flow distributionVSAvoidassembly time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

Multiple suction fitting functions are merged into a single integrated suction fitting component with multiple openings, eliminating the need for separate fittings for the compression mechanism and motor. This reduces the number of assembly steps and fasteners required while maintaining optimized fluid distribution paths

Inventive Principle:
Principle #5Merging (Combining)

3Productivity

If the suction fitting is aligned with the suction inlet, then the installation is straightforward, but the working fluid cannot be effectively directed towards both the compression mechanism and the motor

Engineering Contradiction:
Improveworking fluid distribution effectivenessVSAvoidsuction fitting alignment
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The suction fitting employs asymmetric angular orientation relative to the suction inlet, positioned at a specific angle that enables effective fluid distribution to both the compression mechanism and motor simultaneously. This asymmetric configuration optimizes flow dynamics to both components while maintaining manufacturability through standard angular positioning

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentUS11767838B2Compressor having suction fitting
Publication Date: 2023.09.26 COPELAND LP
  • US11767838B2 patent drawing
  • US11767838B2 patent drawing
  • US11767838B2 patent drawing

AI summary

A compressor includes a shell assembly, a compression mechanism and a suction fitting. The shell assembly defines a chamber. The compression mechanism is disposed within the chamber of the shell assembly and includes a suction inlet. The suction fitting is attached to the shell assembly and extends at least partially into the chamber of the shell assembly. The suction fitting defines first and second openings. The suction fitting directs working fluid through the first opening towards the compression mechanism and the suction fitting directs working fluid through the second opening away from the compression mechanism.