Modular Breathing Gas Supply Device with Detachable Blower

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Solution Overview

Problem

Existing breathing gas supply devices face challenges in cleaning and maintenance due to wear and pressure variations in couplings during phase changes, which affect the reliability and efficiency of gas flow.

Innovation Solution

A modular design is introduced, separating the breathing gas module and blower module with a plug-type coupling for detachable connection, allowing for independent cleaning of the blower module without removing the electric drive, and a housing module that accommodates both, ensuring a compact and efficient gas flow connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the coupling parts are designed to be detachable for cleaning purposes, then the ease of operation is improved, but the coupling parts are subject to wear and stress during mounting and removal

Engineering Contradiction:
Improvecleaning accessibilityVSAvoidcoupling durability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The device is divided into separate modules (breathing gas module and blower module) that can be independently removed and cleaned. The coupling means allows detachment of the blower module from the housing module, enabling cleaning of the breathing gas module without disassembling the entire device. This segmentation resolves the contradiction by making cleaning accessible while minimizing wear through selective disassembly of only the necessary module.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If the blower module is integrated with the housing, then the device complexity is reduced, but the blower module cannot be easily separated for cleaning

Engineering Contradiction:
Improvestructural integrationVSAvoidcleaning accessibility
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The blower module is designed as a separate, detachable unit from the housing module through the coupling means. This allows the breathing gas module to be cleaned independently while maintaining a relatively simple integrated structure during operation. The segmentation enables easy removal and cleaning of the breathing gas module without requiring complete disassembly, thus resolving the contradiction between structural simplicity and cleaning accessibility.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If the coupling is designed for easy assembly without preferred position, then the ease of operation is improved, but the coupling parts experience wear and stress from pressure variations during phase changes

Engineering Contradiction:
Improveassembly simplicityVSAvoidcoupling stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The coupling means is designed with dynamic characteristics that allow it to accommodate pressure variations during inspiration and expiration phases. The coupling can withstand directional breathing gas flows and pressure changes while maintaining a reliable connection. This dynamic design resolves the contradiction by enabling easy assembly without requiring precise positioning, while simultaneously withstanding the stress from pressure variations through its resilient construction.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS8302598B2Breathing gas supply device
Publication Date: 2012.11.06 DRAGERWERK AG
  • US8302598B2 patent drawing
  • US8302598B2 patent drawing
  • US8302598B2 patent drawing

AI summary

A breathing gas supply device is provided which can be taken apart for cleaning purposes. The breathing gas supply device has a modular design in the form of a breathing gas module (2) and a blower module (3), which are inserted together into a housing module (4).