Tangential-Flow Humidification Chamber for Stable Medical Gas Humidity
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Solution Overview
Problem
Existing humidification systems for medical applications face challenges in effectively controlling temperature, pressure, humidity, and flow rate, particularly in respiratory and surgical procedures, leading to inefficiencies in gas delivery to patients.
Innovation Solution
A humidification chamber design that increases gas path length, residence time, and velocity within the chamber, enhances surface area for heat and mass transfer, and introduces gas flow tangentially to create a vortex, improving chamber performance across a wide range of flow rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional humidification chamber with vertical or downward gas flow is used, then the structure is simple, but water splashing occurs and humidification efficiency is reduced
Solution Approach 1:
The patent applies the dynamics principle by orienting the gas inlet substantially tangentially to the side wall, creating a dynamic tangential gas flow pattern that follows the chamber wall. This dynamic flow configuration prevents water splashing while maintaining simple chamber geometry, thereby improving humidification efficiency without increasing structural complexity.
Solution Approach 2:
The patent changes the flow direction parameter of the gas inlet from vertical/downward to tangential relative to the side wall. This parameter change transforms the gas flow pattern to move along the water surface, preventing water droplet ejection while maintaining effective humidification, thus resolving the contradiction between efficiency and simplicity.
2Reliability
If a conventional humidification chamber with vertical gas flow is used, then the manufacturing is simple, but water may be ejected from the chamber
Solution Approach 1:
By configuring the gas inlet to flow tangentially along the side wall, the patent creates a dynamic flow pattern that naturally prevents water ejection. This approach maintains manufacturing simplicity while significantly improving reliability by eliminating water splashing and ejection issues associated with vertical gas flow configurations.
Solution Approach 2:
The patent modifies the flow direction parameter of the gas inlet to be substantially tangential to the side wall, which changes the gas-water interaction dynamics. This parameter change prevents water from being lifted or ejected while keeping the chamber structure simple and easy to manufacture.
3Ease of operation
If a humidification chamber with tangential gas inlet is used, then water splashing is prevented, but the device complexity increases
Solution Approach 1:
The tangential inlet configuration creates a dynamic flow pattern that naturally controls water flow by directing gas along the chamber wall. This dynamic approach improves ease of operation by preventing water splashing without requiring complex mechanical controls or additional components, thus avoiding increased device complexity.
Solution Approach 2:
By changing the inlet orientation parameter to substantially tangential, the patent achieves effective water flow control through flow dynamics alone. This parameter modification eliminates the need for complex water management mechanisms while improving operational ease, thereby resolving the contradiction between control quality and device complexity.
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 design enhances moisture uptake and heat transfer, resulting in improved gas humidity and temperature control, ensuring consistent delivery across varying flow rates, thereby optimizing patient gas intake.
Implementation Method 1
a humidification chamber for use in a medical humidification system... configured to contain a volume of water; a gases inlet configured to receive a gases flow from a gases source... to introduce the gases flow to the humidification chamber
Data Source
Figure 1
Figure 2~2A
Figure 2B~2C
AI summary
In one embodiment, there is provided a humidification chamber for use in a medical humidification system. The humidification chamber may comprise: a base and a top linked by a side wall to define the chamber, the chamber being configured to contain a volume of water; a gases inlet configured to receive a gases flow from a gases source; and a gases outlet, wherein the gases inlet is orientated relative to the side wall to introduce the gases flow to the humidification chamber at a direction substantially tangential to the side wall of the humidification chamber.