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Directional valve for a respirator product

A breathing protection, directional valve technology, applied in breathing protection containers, breathing protection devices, breathing masks, etc., can solve problems such as increasing flow resistance

Active Publication Date: 2011-08-24
DRAGER SAFETY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this known directional valve is that only a part of the cross-section is released by the sealing element in the flow direction. If the directional valve is inside the breathing tube, the breathing gas is deflected via the sealing element to the tube wall, which increases the flow. resistance

Method used

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  • Directional valve for a respirator product
  • Directional valve for a respirator product
  • Directional valve for a respirator product

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] figure 1 A prior art first directional valve 1 is shown in longitudinal section. The first valve housing 2 is connected to a breathing tube 4 in the outer region 3 . The valve housing 2 has a flat bearing surface 6 provided with a hole 5 for a sealing element 7 which is fixed on a centrally arranged web 8 . exist figure 1 In the shown flow direction of the first directional valve 1 , the sealing element 7 rises above the bearing surface 6 and the air flow can pass through the bore 5 . In the closing direction, the sealing element 7 rests on the bearing surface 6 and closes the bore 5 .

[0018] figure 2 A second directional valve 10 according to the invention is shown in longitudinal section. The second annular valve housing 11 is connected to the breathing hose 4 . At the second valve housing 11 the two semicircular valve plates 12 , 13 are fixed in such a way that they start from the fixed parts 14 , 15 at the second valve housing 11 with an extension to the co...

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PUM

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Abstract

A directional valve for a respirator product shall be improved with regard to a low flow resistance. To accomplish the object, two diaphragm-like valve disks (12, 13) abutting against one another at a central line of separation (16) that are attached to the valve housing (11) in a point-like manner and can be moved in a flap-like manner by the breathing gas stream are provided. A central web (19)at the valve housing (11), which runs along the line of separation (16) and support webs (21) additionally arranged on both sides, is used as a valve seat.

Description

technical field [0001] The invention relates to a directional valve for respiratory protection products. Background technique [0002] A directional valve of the aforementioned type is known from DE 10 27 518 in the form of an exhalation valve on a respiratory mask. The directional valve consists of a valve base with a valve seat and a sealing element held centrally by a web. In order to limit the transverse forces that occur when the sealing element is deformed, the sealing element is embodied in the shape of a frustum and has stepped plate-shaped sections displaced relative to one another. The disadvantage of this known directional valve is that only a part of the cross-section is released by the sealing element in the flow direction. If the directional valve is inside the breathing tube, the breathing gas is deflected via the sealing element to the tube wall, which increases the flow. resistance. When using directional valves in rebreather devices, a low flow resistanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62B9/02
CPCA62B9/02A62B18/10
Inventor J·昂格A·海曼J·赫施比格尔J·波尔齐恩
Owner DRAGER SAFETY