Breathing Mask Vent Housing With Noise Reduction and Anti-Blockage Gap
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Solution Overview
Problem
Existing respiratory masks suffer from noise generation due to exhaled gas flushing through vents, which can be mitigated by filter media but risk vent blockage from dust accumulation, and lack effective moisture retention for prolonged wear comfort.
Innovation Solution
A ventilation and noise reduction housing with a supporting protrusion structure maintaining a ventilation gap between the noise reduction core and the mounting wall segment, allowing exhaled gas to pass through while reducing noise and preventing vent blockage, combined with a moisture retention apparatus for humidified breathable gas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If filter media is arranged next to the vent to reduce noise, then noise is reduced, but dust accumulates at the vent causing flow value reduction and potential blockage
Solution Approach 1:
The vent is divided into two separate components: a filter media element for noise reduction and a vent hole for gas discharge. The filter media is positioned adjacent to but separate from the vent hole, allowing exhaust gas to pass through the vent hole while impurities are directed away from it. This segmentation prevents dust accumulation at the vent opening while maintaining noise reduction functionality.
Solution Approach 2:
The harmful function of the filter media (causing dust accumulation and potential blockage) is separated from its useful function (noise reduction). The filter media is extracted and repositioned adjacent to the vent rather than being integrated into the vent structure, so that only the beneficial noise reduction effect remains while the harmful blockage risk is eliminated.
2Duration of action of moving object
If breathing mask is worn for prolonged period, then respiratory treatment is maintained, but wearing comfort decreases due to dry air and low temperature
Solution Approach 1:
A heating-humidification device is introduced as an intermediary component between the ventilator and the breathing mask. This device heats and humidifies the breathable gas before it reaches the user, providing thermal and moisture comfort during prolonged wear while maintaining the therapeutic benefits of the respiratory treatment.
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 solution effectively reduces noise and prevents vent blockage by allowing impurities to be discharged away from the vents, while providing moisture retention for enhanced user comfort and hygiene.
Implementation Method 1
a layer of filter media is arranged next to the vent outside the vent, so that the exhaust gas discharged from the vent can only be discharged through the filter media. The filter media has a slowing effect on the exhaled exhaust gas, thereby effectively reducing such noise.
Implementation Method 2
the supporting protrusion structure is configured to support a ventilation and noise reduction core of a ventilation and noise reduction unit disposed on the ventilation-noise reduction unit mounting wall segment, so that a ventilation gap is at least partially maintained between the ventilation and noise reduction core and the outer surface of the ventilation-noise reduction unit mounting wall segment
Data Source
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AI summary
The present disclosure relates to the field of medical instruments. Disclosed are a ventilation and noise reduction housing and assembly, a ventilation and moisture retention apparatus, a breathing mask assembly and a breathing support device. The ventilation and noise reduction housing comprises a breathing channel segment, one end of the breathing channel segment is a ventilation and noise reduction housing connection end, and the other end of the breathing channel segment is a breathing tube communication end, wherein a channel wall of the breathing channel segment comprises a ventilation and noise reduction unit mounting wall segment, the ventilation and noise reduction unit mounting wall segment is provided with an exhaust port and a support protrusion structure protruding from the outer surface of the ventilation and noise reduction unit mounting wall segment, and the support protrusion structure is used for supporting a ventilation and noise reduction core of a ventilation and noise reduction unit provided on the ventilation and noise reduction unit mounting wall segment, such that a ventilation gap is maintained in at least a part of a space between the ventilation and noise reduction core and the outer surface of the ventilation and noise reduction unit mounting wall segment. The ventilation and noise reduction housing can improve sanitation while reducing noise, so as to improve a therapeutic effect.