Emergency Breathing Device Dual Valve Segmentation
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Solution Overview
Problem
Existing emergency escape breathing devices for fire grounds suffer from interference between the nose and mouth due to a single check valve and exhaust hole configuration, leading to repeated intake of carbon dioxide exhaust gas and difficulty in breathing.
Innovation Solution
The device features a main body with two passages connected at an intersection, equipped with a biting piece, an extension tube, an exhalation valve, and a suction valve. The exhalation valve opens the first passage during exhalation, while the suction valve opens the second passage during inhalation, preventing the intake of carbon dioxide and dense smoke.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single check valve and one exhaust hole are configured in the mask, then the device structure is simple, but the user experiences interference between nose and mouth causing repeated intake of carbon dioxide exhaust gas
Solution Approach 1:
The single check valve is divided into two separate check valves: a first check valve for the first passage and a second check valve for the second passage. This segmentation allows each valve to independently control its respective passage, preventing interference between nose and mouth breathing paths and eliminating repeated intake of carbon dioxide exhaust gas.
Solution Approach 2:
The invention introduces a spatial dimension by creating two separate passages (first passage and second passage) with independent check valves. This dimensional separation allows the nose and mouth to breathe independently without interference, transforming a one-dimensional single-valve system into a multi-dimensional dual-passages system.
2Object-affected harmful factors
If an air-tight pad is fitted between the mask and the face, then smoke intake is prevented, but the production cost increases
Solution Approach 1:
The invention extracts the smoke prevention function from the air-tight pad and relocates it to the dual check valve mechanism. The check valves themselves become the primary barrier against smoke intake, eliminating the need for separate air-tight pads and reducing production costs while maintaining smoke prevention effectiveness.
Solution Approach 2:
The invention replaces expensive, complex air-tight pads with simple, inexpensive check valves that can be easily manufactured. The check valves serve as disposable-like components that provide effective smoke prevention without the high cost and complexity of traditional air-tight sealing systems.
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
This configuration allows users to breathe smoothly and avoid carbon dioxide re-inhalation, enhancing their ability to escape or survive in smoke-filled environments by providing clean air from outside the hazardous area.
Implementation Method 1
an exhalation valve, connected to the outer end face of the first connecting hole of the main body, to open/close the first passage, i.e., open the first passage when the user exhales, and close the first passage when the user inhales
Implementation Method 2
a suction valve, connected to the inner end face of the second connecting hole of the main body, to open/close the second passage, i.e., open the second passage when the user inhales, and close the second passage when the user exhales
Implementation Method 3
an extension tube, connected to the outer end of the second passage of the main body, for extension to the outside to breathe clean air from an area without dense smoke
Data Source
AI summary
The present invention relates to an emergency escape breathing device for use in a fire ground, provided as an emergency life-saving apparatus and comprising an exhalation valve and a suction valve configured inside a main body. In addition, a biting piece is connected on the main body for biting by the mouth of a person, and an extension tube is connected to the main body for breathing clean air from the outside. Through the interactive operation of the exhalation valve and the suction valve provided by the present invention, the user can breathe smoothly and avoid repeated intake of carbon dioxide exhaust gas.