Magnetic Face Guard Mask Layout for Low-Resistance Airflow
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Solution Overview
Problem
Existing masks with front surface air suction holes face issues such as increased flow resistance, power consumption, noise, and potential dust ingress when not worn correctly, and separate covers for these holes can be damaged or protrude, affecting appearance and durability.
Innovation Solution
A mask apparatus with a rear surface suction hole and internal discharge hole, using a detachable face guard coupled by magnets, and an air cleaning module with a centrifugal fan and filter, ensuring airflow separation and minimizing external exposure of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the air suction hole is defined in the front surface of the mask, then the mask structure is simple, but flow resistance increases and power consumption increases
Solution Approach 1:
The suction hole is relocated from the front surface to the rear surface of the mask body, inverting the conventional airflow entry position. This inversion allows air to be drawn in from behind the filter assembly, reducing the number of flow conversions required and thereby decreasing power consumption while maintaining structural simplicity
2Device complexity
If the air suction hole is defined in the front surface of the mask, then the mask structure is simple, but flow noise increases
Solution Approach 1:
By inverting the suction hole position to the rear surface, the airflow path is optimized to reduce turbulence and flow conversions, thereby minimizing flow noise generation while keeping the overall mask structure simple
3Object-affected harmful factors
If the suction hole cover is mounted separately, then the suction hole can be covered, but the cover can be damaged or separated due to external force
Solution Approach 1:
The suction hole cover function is extracted as a separate detachable component that can be easily attached and removed. This allows the cover to be replaced if damaged and enables easy cleaning of the suction hole area, improving maintenance reliability while preventing dust ingress during use
Solution Approach 2:
The cover is designed with elastic deformation capability, allowing it to flex and return to its original shape, which enhances its resistance to damage from external forces and extends its service life
4Adaptability or versatility
If the suction hole is defined outside the mask body, then the structure is flexible, but flow resistance increases
Solution Approach 1:
The suction hole is positioned on the rear surface of the mask body, utilizing the three-dimensional space available in the mask structure. This spatial arrangement allows the air intake to be optimally positioned relative to the filter and fan assembly, minimizing flow resistance while maintaining structural flexibility and adaptability
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 airflow efficiency, reduces noise and power consumption, maintains mask appearance, and improves durability by integrating the suction and discharge holes in a way that prevents dust ingress and ensures smooth operation.
Implementation Method 1
a magnetic body disposed at the coupling portion... that is detachably coupled to a rear surface of the rear body by magnetic force
Implementation Method 2
an air cleaning module with a centrifugal fan and filter
Data Source
AI summary
A mask apparatus includes a mask body that defines a suction hole and a discharge hole, a face guard detachably coupled to the mask body by magnetic force and configured to contact a face of a user, and an air cleaning module configured to filter external air and to supply the filtered air to a breathing space. The face guard includes a coupling portion facing a rear surface of the mask body. The coupling portion includes a magnetic body and a magnetic body mounting portion that receives the magnetic body. The magnetic body mounting portion includes a mounting portion body that protrudes forward from an outer surface of the coupling portion and an insertion guide rib disposed inside the mounting portion body, where the mounting portion body and the insertion guide rib are spaced apart from each other to thereby define an insertion hole that receives the magnetic body.