Rear-Flow Purifying Mask Layout for Lower Breathing Resistance
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Solution Overview
Problem
Conventional masks with air inlets on the front and outlets on the rear side experience increased flow resistance, power consumption, noise, and risk of dust introduction due to frequent air flow conversions, and have design limitations that affect appearance and durability.
Innovation Solution
A mask apparatus with inlets and outlets on the rear surface, symmetric accommodation portions for the air cleaning module, and a control module distributed on both front and rear surfaces, reducing flow resistance and eliminating the need for external covers, while allowing for a sleek design and efficient component placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the air inlet is provided on the front side of the mask and the air outlet is provided on the rear side, then the mask structure is simple, but the flow resistance increases and the fan load increases
Solution Approach 1:
The patent inverts the conventional air inlet/outlet arrangement by placing both the air inlet and air outlet on the rear side of the mask instead of front-rear configuration. This inversion reduces the number of flow direction changes air must undergo, thereby reducing flow resistance and fan load while maintaining structural simplicity
2Device complexity
If the air inlet is provided on the front side of the mask, then the mask structure is simple, but the power consumption of the battery increases
Solution Approach 1:
By inverting the air inlet position to the rear side of the mask, the patent reduces the flow resistance that the fan must overcome. This reduction in resistance directly lowers the power consumption of the battery that supplies power to the fan, extending battery life without complicating the mask structure
3Device complexity
If the air inlet is provided on the front side of the mask, then the mask structure is simple, but the flow noise increases
Solution Approach 1:
The patent moves the air inlet to the rear side of the mask, which simplifies the air flow path and reduces the number of bends and direction changes. This reduction in flow turbulence directly decreases flow noise generation while keeping the overall mask structure simple
4Device complexity
If the air inlet is provided on the front side of the mask, then the mask structure is simple, but the filter life is shortened
Solution Approach 1:
By relocating the air inlet to the rear side of the mask, the patent reduces the exposure of the air intake to external contaminants such as dust and insects. This positional change decreases the amount of particulate matter that reaches the filter, thereby extending filter life without complicating the mask structure
5Device complexity
If the air inlet is provided on the front side of the mask, then the mask structure is simple, but the appearance is degraded
Solution Approach 1:
The patent inverts the conventional air inlet placement to the rear side of the mask, which eliminates the need for protruding inlet covers on the front surface. This design choice improves the aesthetic appearance by creating a smoother front surface while maintaining structural simplicity through the rear-side inlet configuration
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
Significantly reduces flow resistance, power consumption, and dust introduction, enhances durability, and improves appearance, while optimizing space utilization and component integration.
Implementation Method 1
an air cleaning module that is mounted on the rear body, that is configured to purify air introduced into the inlet, and that is configured to supply the purified air to the respiration space
Data Source
AI summary
A mask apparatus includes: a mask body including a rear body and a front body coupled to a front surface of the rear body and providing an inlet and an outlet, a face guard coupled to the rear body, accommodating a portion for user's face, and defining a respiration space, an air cleaning module mounted on the rear body, purifying air introduced into the inlet, and supplying the purified air to the respiration space, a main control module mounted on the front surface of the rear body, and a battery mounted on the front surface of the rear body corresponding to a lower side of the main control module. The main control module includes: a main control substrate, a first electric part component mounted on a front surface of the main control substrate, and a second electric part component mounted on a rear surface of the main control substrate.