DE102011010029A1 - Textile filtering respirator for protection against chemical, bacterial or radioactive media, has cover material of head cover, which is made of woven or knitted fabric laminate - Google Patents

Abstract

The textile filtering respirator has a cover material of a head cover (1), which is made of a woven or knitted fabric laminate, and has a non-woven fabric layer in combination with a water vapor-permeable membrane. The non-woven fabric layer of the cover material of the head cover is formed as a layer structure.

Description

The invention essentially relates to a respirator hood. The respirator serves to protect against chemical, bacteriological and / or radioactive media and consists for example of a hood made of a textile material in multilayer structure and a water vapor permeable membrane, a front mounted, flexible or semi-flexible viewing window with tarnish protection, a half mask of textile filter material and a sealed at the level of the neck to the transition to the remaining protective suit sealing membrane and for automatic fixation of the head as well as its distance from the flexible or semi-flexible viewing window internally integrated spacers.

State of the art

Such protective hoods serve to protect against unwanted substances in an external atmosphere and have a breathing device through which the user can breathe air or oxygen in a suitable manner. On the front side, the protective hoods known from the prior art are closed with a sight-like window for protection against chemical, bacteriological and / or radioactive media.

Typical protective equipment with protective hoods for protecting, for example, workers in hazardous and / or contaminated environments are in the patents DE 103 03 602 A1 and US-P-42 72 851 described. Although in these by external compressed air sources and double-walled designed partial areas, the fresh air needed for breathing targeted the facial area is created by the fresh air located inside and the exhaled air condensation, which accumulates disadvantageously under the transparent visor of the respiratory protective hood.

Another way of air in the inner mask is in a variety of full masks training with control valves, which also leads to an unwanted breathing resistance to arrange a variety of additional parts, so that on the one hand increase the cost and on the other hand, a constant extensive maintenance is required.

One way to solve the problems described is known in the art "open execution" of the inner mask. A disadvantage of this embodiment is that this inner mask must be connected with elaborate constructions for securing the flushing of the viewing window or the viewing windows, otherwise their fogging can not be prevented.

Examples of breathing masks formed with an inner mask are described below DD 60 931 described mask, the inner mask consists of a double, a gap forming wall, wherein the intermediate space is connected by means of openings with the surrounding the breathing organs interior and formed by a connecting piece and a partition antechamber.

The in the DE 12 38 780 described respirator mask with irrigation has below the lens on a transverse, integrally connected to the mask body partition on the inhalation ends and which is provided with openings for the inhaled air, while the exhaled air is discharged via below the partition wall mounted on the mask body exhalation valves.

According to the US 13 52 818 The respirator is divided over a diaphragm into an eye and a mouth, the spaces being connected by at least one tube extending through the diaphragm.

Finally, that describes DE 26 43 8533 a respirator, which has an inner mask covering a mouth and nose as well as an inhalation and exhalation valve. An insert body of a capillary-acting resilient material replicated from the inner mask and replicated to the face shape is arranged inside the inner mask and with its bottom surface at the lowest point on the mask base and has an inhalation hole on the front side above the bottom surface.

It is known in goggles to avoid fogging the inside of the glasses to provide the same with an anti-fog coating. In strenuous physical work, the anti-fog coating slows down the start-up of sight glasses, but does not completely prevent it. Fans equipped with glasses are not suitable as goggles because of their high weight and at low temperatures decreasing fan ventilation.

Another example of protective covers available on the market is respiratory masks. These are made of refractory stretchable material shaped like a hood and close at the neck substantially airtight. A part of the mask is provided with a transparent visor. In addition, such hoods have a filter material sealingly attached thereto at an orifice, the filter comprising a plurality of refractory flexible sheets. In most cases, activated carbon is embedded in at least one of these layers.

task

The invention has for its object to provide a textile filtering respirator hood, the intended use of which is caused by the exhaled air condensation on the window-like visor is avoided.

Technical solution

This object is achieved by the features of claim 1. Further, particularly advantageous embodiments of the invention disclose the dependent claims.

The invention is based essentially on the idea of combining the hood material of a textile bilinate of a woven or knitted textile layer and / or a nonwoven fabric layer with a water vapor permeable membrane.

The filtering respirator hood for protection against chemical, bacteriological and / or radioactive media is multi-layered, for example as a multi-layered layer structure, formed, wherein the individual layers can be interconnected, for example by ultrasonic or RF technology.

Furthermore, the hood material of the hood of the respiratory protective hood according to the invention can be flame-retardant, for example made of a anti-hammering material. In addition, the textile filtering respirator can be made flame retardant, for example by applying a PU formulation.

In one embodiment of the invention can be provided that the window-like viewing area, which may be flexible or semi-flexible, is provided with a tarnish protection. The advantageous distance between the face of the user of the textile filtering respiratory protective hood and the field of view and a fixation of the head can be achieved by incorporated spacers.

The sealed orinasal area can consist of a multi-layer, progressively designed filter system with direct exhalation valves. A sealing membrane made of silicone, for example, serves to prevent the entry of false air.

The air filtering may be via conventional prior art masks, half masks or the like. The masks, half masks o. A. may consist of textile filter materials having adsorptive and / or absorptive deposition properties.

embodiment

Further details and advantages of the invention will become apparent from the following with reference to figures explained embodiments. Show it:

1 a section through a textile filtering respiratory protection hood according to the invention for protection against chemical, bacteriological and / or radioactive media;

2 a side view of a possible embodiment of an inventive textile filtering respirator hood to protect against chemical, bacteriological and / or radioactive media;

In the 1 and 2 a textile filtering respirator hood according to the invention or an exemplary embodiment according to the invention for protection against chemical, bacteriological and / or radioactive media are shown in which a person to be protected 6 located. The filtering respirator hood for protection against chemical, bacteriological and / or radioactive media comprises a hood 1 which has a sealing membrane 5 can be connected to any protective clothing for the remaining body protection. The hood 1 is front side with a flexible or semi-flexible viewing window 2 , which is fog-resistant by a coating, sealed. Directly below the flexible or semi-flexible viewing window 2 is a half mask on the front 3 attached for air filtration. Above the flexible or semi-flexible viewing window 2 is inside for automatic fixation of the head of the person 6 as well as for automatically obtaining a sufficient distance to the viewing window 2 a spacer 4 appropriate. At the transition of the hood 1 to the remaining protective suit at the level of the neck area is a sealing membrane for the airtight seal 5 integrated.

LIST OF REFERENCE NUMBERS

1

hood

2

window

3

(Semi) Mask

4

spacer

5

sealing membrane

6

person

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10303602 A1 [0003]
• US 4272851 P [0003]
• DD 60931 [0006]
• DE 1238780 [0007]
• US 1352818 [0008]
• DE 26438533 [0009]

Claims (7)

Textile filtering respiratory protective cover for protection against chemical, bacteriological and / or radioactive media, characterized in that the hood material of the hood ( 1 ) consists of a woven or knitted textileillinate or a nonwoven fabric layer in combination with a water vapor permeable membrane. Textile filtering respiratory protective hood according to claim 1, characterized in that the hood material of the hood ( 1 ) of woven or knitted textileillinate or a nonwoven fabric layer in combination with a water vapor permeable membrane as a layer structure, in particular may be configured multi-layered. Textile filtering respiratory protective hood according to claim 1 to 2, characterized in that the hood material of the hood ( 1 ) is flame-retardant. Textile filtering respiratory protective hood according to claim 1, characterized in that the front side a flexible or semi-flexible viewing window ( 2 ) provided with tarnish protection, in particular integrated, is. Textile filtering respiratory protective hood according to claim 1, characterized in that spacers for internal fixation of the head and / or for spacing ( 4 ) of the head to the flexible or semi-flexible viewing window ( 2 ) are integrated. Textile filtering respiratory protective hood according to claim 1, characterized in that on the front side a half mask ( 3 ), which consists of textile filter materials with adsorptive and / or absorptive deposition properties. Textile filtering respiratory protective hood according to claim 1, characterized in that at the transition from the textile filtering respiratory protective hood to the remaining protective suit at the level of the neck region for airtight sealing, a sealing membrane ( 5 ) is available.

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