Powered exhaust apparatus for a personal protection respiratory device

A technology of exhaust equipment and breathing devices, which is applied in the direction of respiratory protection devices, protective devices against harmful chemicals, and breathing filters, etc., which can solve the problems of heat and moisture accumulation in negative pressure respirators, and improve comfort and overall experience

Active Publication Date: 2015-07-22
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Despite years of development work, wearers of negative pressure respirators may still experience heat and moisture buildup

Method used

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  • Powered exhaust apparatus for a personal protection respiratory device
  • Powered exhaust apparatus for a personal protection respiratory device
  • Powered exhaust apparatus for a personal protection respiratory device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] The present invention has employed a method of using an exhaust device for detachable or permanent connection to personal protective breathing apparatus to allow improved comfort and overall experience for the wearer. Use of the present invention allows the respirator to be worn during high-intensity work, and / or for extended periods of time, and / or in hot and humid environmental conditions, by removing heat and moisture built up within the respirator. The benefit felt by the wearer occurs at low work rates (eg, when performing sedentary tasks), but the effect may also increase as work rate increases. Using a powered exhaust device that draws hot air and moisture out of the enclosed space between the inside of the respirator and the wearer means that the difficulties sometimes experienced in hot and humid conditions or after extended periods of use are minimized or remove it entirely. Advantageously, the act of drawing hot, humid air out of the respirator and replacing...

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PUM

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Abstract

The present invention relates to an exhaust apparatus 10 for releasable or permanent connection to a personal protection respiratory device 20 that defines a filtered air volume adjacent to the face of a wearer and comprises at least one exhalation valve 26. The exhaust apparatus 10 comprising a powered blower 30 in fluid connection with the at least one to exhalation valve 26, the blower 30 being operable to draw a portion of the wearer's exhaled breath through the exhalation valve 26. Using such an exhaust apparatus 10 improves the comfort and overall experience for respirator wearers who use the respirator for intensive work, and / or for long periods of time, and / or in hot and humid environmental conditions by removing the heat and moisture build-up inside the respirator.

Description

technical field [0001] The invention relates to an exhaust device for a personal protective breathing apparatus, especially a negative pressure respirator. In particular, the present invention relates to a powered exhaust device releasably connectable to personal protective breathing apparatus. In use, such a powered exhaust device removes hot and humid air that can often accumulate within a negative pressure respirator to significantly improve and enhance wearer comfort. Background technique [0002] Negative pressure respirators are well known in the art. With this type of respirator, filtered air is drawn by the filter system into the enclosed space between the inside of the respirator and the wearer's face through the wearer's breathing action. When the wearer inhales, a negative pressure is created in the respirator and air is drawn through the filtration system. When the wearer exhales breath, the air consumed exits the respirator through the exhalation valve and / or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62B18/00A62B18/10
CPCA62B18/10A62B18/006A62B18/003A62B18/02A62B18/00A61M16/208A61M16/22A62B7/10A62B7/12A62B17/04A62B23/025
Inventor 德斯蒙德·T·柯伦
Owner 3M INNOVATIVE PROPERTIES CO
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