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Filtering face respirator having optimized facial filter location

A filter and respirator technology, which is used in breathing filters, respirator protective containers, respirator masks, etc., can solve problems such as user discomfort and inability to tolerate wearing respirator.

Inactive Publication Date: 2017-02-22
SCOTT TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A common complaint and cause of respirator intolerance for users is user discomfort

Method used

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  • Filtering face respirator having optimized facial filter location
  • Filtering face respirator having optimized facial filter location
  • Filtering face respirator having optimized facial filter location

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0018] Human breathing involves breathing from the mouth and nose, where airflow follows separate air paths during the inhalation and exhalation movements. Proper placement of the filter elements of the mask allows for minimal turbulent airflow through the filter for the mouth and nose.

[0019] As shown in Figure 1A, which shows a side respiratory view of the inhaled and exhaled nasal flow, which can be defined in part as a gradually expanding conical air path by the nasal passage with The nostrils begin to extend with increasing radius. The outer boundaries of the airflow from the nostrils (shown as n1 and n2) are defined by two or more angles of incidence (denoted as Φ1 and Φ2) of the outer envelope of the air path cone (whose center is Φc) originating from the nose The difference indicates. Referring to FIG. 1B , which shows a frontal respiratory view of the inhaled and exhaled nasal flow of FIG. 1A , a three-dimensional perspective view is defined at a 90-degree offset ...

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PUM

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Abstract

A respiratory mask has a filter element that is optimally position relative to the inhale and exhale of a wearer's nose and mouth in relation to the size and shape of the filter allowing a direct pathway of the airflow between the wearer's nose and mouth to the filter. A non- permeable section, incorporated in the filter element, filtering structure, the sealing area or a combination thereof, is used to direct and channel the outer dispersed boundaries of the nasal and oral flow to the filter element. The optimally positioned filter coupled with channeling of the boundary flow through the filter element reduces residency time of exhaled breath in the mask.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 61 / 985,291, filed April 28, 2014, the contents of which are incorporated herein by reference. technical field [0003] The present invention relates to respirator efficiency and respirator user (also referred to as "wearer") comfort. Background technique [0004] Respiratory protection is critical in many occupations where workers are exposed to gases, vapors and / or aerosols, including dust, mist and biological agents. Respirators come in all types and sizes, from inexpensive disposable masks to more expensive reusable masks with replaceable filter cartridges. The basic components of most respirators include the filter structure, the sealing area (either as part of the filter structure or as a separate reusable molded component on multiple half-mask and full-face respirators) and the ability to hold the respirator on the user's face Certain typ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62B23/02
CPCA62B18/025A62B23/02
Inventor M·帕哈姆A·W·萨博里斯E·D·佛斯C·瓦德G·P·威尔逊
Owner SCOTT TECH INC