Portable air-purifying system utilizing enclosed filters

A technology of air purification and air, applied in colloid chemistry, colloid chemistry, respiratory protection containers, etc., can solve problems such as time-consuming, troublesome, and user troubles

Inactive Publication Date: 2008-05-14
SCOTT TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, this design requires an additional step of removing the sterile shoe, which is time consuming and cumbersome
Also, once removed, sterile shoes must be carried or stored safely, which is cumbersome for the user

Method used

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  • Portable air-purifying system utilizing enclosed filters
  • Portable air-purifying system utilizing enclosed filters
  • Portable air-purifying system utilizing enclosed filters

Examples

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Embodiment Construction

[0050] Referring now to the drawings, in which like numerals refer to like parts throughout the several views, the preferred embodiments of the present invention will now be described. The following description of the preferred embodiments is merely exemplary in nature and in no way restricts the invention, its application or uses.

[0051] FIG. 1 is a perspective view of a combined air supply / protection air purification system 10 according to a first preferred embodiment of the present invention. Combined system 10 includes SCBA 20 and protective PAPR 40 (both supported by carrying frame 21 ), and mask or visor 18 . Each of these components will be described in more detail below.

[0052] FIG. 2 is a height schematic view of the SCBA of FIG. 1 . The SCBA 20 includes one or more pressure vessels 22, a valve assembly 24, a pressure reducer 26, a high pressure hose assembly 30 for providing a fluid connection between the outlet of the pressure reducer 26 and the mask 18, a sec...

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PUM

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Abstract

A powered air-purifying respirator that includes an enclosure, defining a single contiguous enclosed interior, an inlet duct, including an inlet and a distribution portion, that guides ambient air to the interior of the enclosure, a plurality of filter canisters disposed within the interior of the enclosure, and a blower that forces air through the at least one inlet, into the interior of the enclosure and through the plurality of filter canisters to produce filtered air suitable for breathing. A valve controls the flow of ambient air through the inlet duct. A fluid dam, disposed in an air path between the inlet and the filter canisters prevents liquids from reaching the filter canisters. The enclosure is reinforced and is adapted to provide protection for the filter canister from flame and heat while the filter canister is in use. A recirculation valve recycles previously-filtered air back into the enclosure.

Description

[0001] Cross References to Related Applications [0002] This application is entitled to and claims U.S. Patent Application No. 11 / 100,257, filed April 6, 2005, entitled "Portable Air-Purifying System Utilizing Enclosed Filters," and filed April 6, 2004, entitled "Combined Air-Supplied / Air-Purifying System”, the entire subject matter of both applications is hereby incorporated by reference. technical field [0003] The present invention relates generally to respirator devices, and in particular to portable powered air-purifying respirators utilizing one or more enclosed filters. Background technique [0004] Various devices are known for providing breathable air in hazardous environments. Two specific common types are the air filtration type, in which the ambient air is filtered to remove hazardous pollutants so that the user can breathe the air safely, and the self-contained breathing apparatus ("SCBA") type, in which the user carries and Use pressurized container with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62B7/10
CPCA62B18/006Y10S55/35A62B7/10
Inventor J·A·菲弗W·E·帕森J·W·摩根三世R·D·威廉斯
Owner SCOTT TECH INC
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