Humidifier Reservoir Pressure Coupling for Stable Heat Transfer
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Solution Overview
Problem
Existing respiratory devices suffer from discomfort, poor fit, and inefficiencies in thermal coupling and over-filling of humidifier reservoirs, which affect patient comfort and treatment efficacy.
Innovation Solution
A humidifier reservoir design featuring a variable portion that enhances thermal engagement with the heater plate using therapy pressure and includes over-filling protection elements to prevent excess water, improving comfort and efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the humidifier reservoir is engaged with the heater plate using conventional means, then the structure is simple, but thermal engagement is poor leading to reduced humidification effectiveness
Solution Approach 1:
The reservoir utilizes therapy pressure as a variable parameter to dynamically improve thermal engagement. When therapy pressure is applied, it forces the reservoir into better contact with the heater plate, enhancing heat transfer and humidification effectiveness without requiring a permanently complex structure.
Solution Approach 2:
The system uses its own operating parameter (therapy pressure) to automatically improve its own thermal engagement. The therapy pressure itself serves the dual purpose of treating the patient and simultaneously enhancing the humidification function, eliminating the need for separate mechanical engagement mechanisms.
2Ease of operation
If no over-filling protection is provided, then the device is simpler, but water spillage occurs reducing comfort and causing operational issues
Solution Approach 1:
The reservoir incorporates visual indicators (such as color-coded zones or transparent markings) that change or become visible to indicate the maximum fill level. This allows users to easily identify the correct fill level without complex mechanical or electronic protection mechanisms, maintaining simplicity while preventing over-filling.
3Reliability
If thermal engagement is poor, then the reservoir structure can be simpler, but humidity delivery is inconsistent reducing treatment efficacy
Solution Approach 1:
The reservoir employs pneumatic pressure (therapy pressure) to achieve and maintain consistent thermal engagement with the heater plate. The gas pressure dynamically adjusts the contact between reservoir and heater, ensuring reliable heat transfer and consistent humidity delivery throughout the therapy cycle.
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
Enhances thermal coupling and prevents over-filling, leading to improved patient comfort and treatment efficacy by maintaining optimal humidification and reducing spillage risks.
Implementation Method 1
improving thermal engagement for better humidity delivery
Implementation Method 2
utilizes therapy pressure to enhance thermal coupling
Implementation Method 3
over-filling protection mechanism, such as an orifice or sloped profile
Implementation Method 4
prevent water spillage and ensure optimal operation
Data Source
AI summary
An apparatus for humidifying a flow of pressurised, breathable air includes varying a first pressure of the flow of breathable gas to vary a level of thermal engagement between the conductive portion of the reservoir and the heater plate, varying a height of the variable portion varies a level of thermal engagement between the conductive portion of the reservoir and the heater plate, use of a humidifier reservoir base component with a maximum water capacity substantially equal to the predetermined maximum volume of water of the humidifier reservoir or the use of intersecting inlet and outlet axes.