Portable Oxygen Concentrator Compressor Assembly for Compact Reliability

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Solution Overview

Problem

Portable oxygen concentrators face challenges in reducing size and weight while maintaining performance, requiring innovative design approaches to achieve compactness, efficiency, and reliability.

Innovation Solution

The design incorporates improved compressor control features, high-density gas-tight interconnects, integrated sensor blocks, space-efficient adsorber designs, enhanced airflow, and a battery retention system with a flexible stiffening mechanism to create a compact, lightweight, and reliable portable oxygen concentrator.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If the size and weight of portable oxygen concentrator components are reduced, then portability and user convenience are improved, but device reliability and performance may deteriorate

Engineering Contradiction:
Improveweight of portable oxygen concentratorVSAvoiddevice reliability
Core Design Contradiction:
Weight of moving objectVSReliability

Solution Approach 1:

The battery is divided into two separate slides (first slide and second slide) that can be independently retained by corresponding rails, allowing each battery unit to be securely held and replaced separately while maintaining overall device reliability

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The flexible stiffening mechanism with protrusions and slits is nested within the battery retention structure, where the protrusions fit into slots in the battery slides, creating a compact integrated system that provides stiffening without adding external bulk

Inventive Principle:
Principle #7Nested doll (Nesting)

2Stability of the object's composition

If the battery retention structure is made more rigid to stabilize the battery, then battery stability is improved, but the structure becomes more complex and harder to assemble

Engineering Contradiction:
Improvebattery stabilityVSAvoidbattery retention structure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The battery retention structure incorporates flexibility through slits that allow the protrusions to move dynamically during battery insertion and removal, enabling easy assembly and disassembly while maintaining battery stability during operation

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The flexible stiffening mechanism uses thin flexible components with protrusions and slits that provide structural support and battery stabilization without requiring complex rigid structures, simplifying the overall retention design

Inventive Principle:
Principle #30Flexible shells and thin films

Data Source

PatentUS11821559B2Compact portable oxygen concentrator
Publication Date: 2023.11.21 INOGEN INC
  • US11821559B2 patent drawing
  • US11821559B2 patent drawing
  • US11821559B2 patent drawing

AI summary

A compressor assembly for a portable oxygen concentrator includes a first compressor chamber having a first connector, a second compressor chamber having a second connector, and a tube having a first end having a first connection interface configured to connect to the first connector and a second end having a second connection interface configured to connect to the second connector. The first connection interface is shaped to maintain the connection between the first connector and the first connection interface in a fixed orientation and the second connection interface is shaped to maintain the connection between the second connector and the second connection interface in a fixed orientation. One or more of the first connector, the second connector, and the tube are compliant.