Portable Respiratory System With Nested Flow-Sensing Channels
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Solution Overview
Problem
Existing portable respiratory systems face challenges in accurately controlling airflow, leading to discomfort, ineffective treatment, and inefficient energy use due to inadequate pressure regulation.
Innovation Solution
A portable respiratory system with a flow sensor, flow limiter, and specific flow channel design that includes asymmetrical buffer spaces and detection passages to stabilize airflow measurement, allowing for precise control and regulation of airflow based on user requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a portable respiratory system is designed to be miniature and lightweight, then portability is improved, but airflow control accuracy deteriorates
Solution Approach 1:
The flow sensor is nested within the housing structure, with detection passages integrated into the rigid member that defines flow channels. The elastic member surrounds the blower, creating a compact nested arrangement that maintains measurement precision while reducing overall system size and weight.
Solution Approach 2:
The rigid member defines multiple flow channels (air inlet, lateral, transmission, air outlet) in three-dimensional space, with detection passages positioned at specific locations to measure pressure differences. This spatial arrangement enables accurate airflow measurement within a compact form factor.
2Reliability
If pressure regulation is improved to enhance comfort and therapeutic effectiveness, then treatment quality is improved, but energy consumption increases
Solution Approach 1:
The flow sensor measures pressure differences across the flow channels and provides feedback to the control system. Based on this feedback, the system adjusts blower operation to maintain optimal airflow, ensuring therapeutic effectiveness while minimizing energy consumption by avoiding excessive pressure regulation.
Solution Approach 2:
The system dynamically adjusts operating parameters (blower speed, pressure) based on real-time flow sensor measurements and user requirements. This enables precise control of airflow to achieve the minimum effective pressure needed for treatment, rather than maintaining excessively high pressure, thereby reducing energy consumption.
3Measurement precision
If flow measurement accuracy is improved through detection passages and buffer spaces, then airflow control precision is improved, but device complexity increases
Solution Approach 1:
The rigid member serves multiple functions simultaneously: it defines the flow channels (air inlet, lateral, transmission, air outlet), positions the detection passages, and creates the buffer spaces. This merging of functions into a single component reduces overall device complexity while maintaining measurement precision.
Solution Approach 2:
The elastic member also serves multiple purposes: it surrounds and supports the blower, provides sealing, and contributes to the compact structure. The flow limiter with pipes serves both to regulate flow and to define detection passages for measurement. This multi-functionality reduces the number of separate components needed.
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
The system achieves improved therapeutic effectiveness and user comfort by accurately regulating airflow, enhancing stability and accuracy of flow measurement, and promoting better therapeutic outcomes.
Implementation Method 1
the first detection passage and the second detection passage are individually connected to the flow sensor
Implementation Method 2
The blower is disposed in the elastic member, and is operable to receive an airflow from the transmission flow channel to generate a positive pressure airflow
Implementation Method 3
The elastic member is disposed in the lower chamber
Data Source
AI summary
The present invention discloses a portable respiratory system including a housing, a divider, a flow sensor, an elastic member, a rigid member, a blower and a flow limiter. By configuring the divider in the housing, the system is partitioned into an upper chamber and a lower chamber, wherein the flow sensor is located in the upper chamber and the elastic member is located in the lower chamber. The rigid member is fixed in the lower chamber, and defines an air inlet flow channel, a lateral flow channel, a transmission flow channel, and an air outlet flow channel. The blower is disposed in the elastic member and is operable to receive an airflow from the transmission flow channel and generate a positive pressure airflow. The flow limiter includes multiple pipes and is located in the lateral flow channel.