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Flame-guard filter composed of a number of layer sequences, and arrangements of flame-guard filters and their use

A filter and layer sequence technology, applied in filtration and separation, dispersed particle filtration, fire rescue, etc., can solve the problems of high space requirements, high material input, limited application possibilities of flame protection filters, etc. Dangerous effect of ignition breakdown

Inactive Publication Date: 2017-08-18
R STAHL SCHALTGERATE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the large construction length limits the application possibilities of such flame protection filters and requires, in addition to a high space requirement, a higher material investment

Method used

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  • Flame-guard filter composed of a number of layer sequences, and arrangements of flame-guard filters and their use
  • Flame-guard filter composed of a number of layer sequences, and arrangements of flame-guard filters and their use
  • Flame-guard filter composed of a number of layer sequences, and arrangements of flame-guard filters and their use

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Embodiment Construction

[0082] According to the flame protection filter F of the present invention in figure 1 An important element of the first embodiment schematically shown in is the first layer sequence S1 consisting of a first filter layer 1 and a second filter layer 2 along the are arranged one above the other along a common axis 7. The first filter layer 1 is formed from a metal wire fabric, has a circular cross section and has first openings 1.1. The first openings 1.1 are delimited by webs 1.2, all of the same size and of the same shape, and have a first opening width 1.11 of 400 μm as the clear width between two webs 1.2 running parallel to one another.

[0083] The second filter layer 2 is likewise formed from a metal wire fabric. The wire fabric is a plain woven wire mesh and has second openings 2.1 with a second opening width 2.11 of 150 μm.

[0084] The first filter layer 1 has free sides 6.3 and is henceforth referred to as the first end filter layer 3 . The second filter layer 2 h...

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Abstract

The invention relates to flame-guard filters (F) consisting of a number of layer sequences (S1, S2, S3), wherein each of the layer sequences (S1, S2, S3) consists of filter layers (1, 2) arranged on top of each other. Each layer sequence (S1, S2, S3) consists of a first filter layer (1) and of a second filter layer (2), each made of a material arranged in a lattice formation and having openings (1.1, 2.1), each with an opening width (1.11, 2.11). The first filter layer (1) having a free side face (6.3) is a first end-filter layer (3) with a first end- filter opening width (3.11), and the second filter layer (2) having a free side face (6.4) is a second end-filter layer (4) with a second end-filter opening width (4.11). The second opening width (2.11) of a second filter layer (2) is smaller than the first opening width (1.11) of a first filter layer (1). The second filter layer (2) is opaque. The invention further relates to an arrangement (10) of at least two flame-guard filters (F1, F2), and also to a housing (9) which is encapsulated in a pressure-resistant manner and has at least one flame-guard filter (F, F1, F2).

Description

technical field [0001] The invention relates to a flame protection filter such as is known generically from DE 20 2011 050 194 U1. Furthermore, the invention relates to a system of at least two flame protection filters, the use of the flame protection filter and the system, and a pressure-resistant housing with at least one flame protection filter. Background technique [0002] In various technical installations, undesired accumulations of explosive gases, gas mixtures and / or fumes (aerosols) can occur locally. When they are ignited, in addition to the rapidly rising explosion pressure, a flame is also formed in most cases. As a result of this flame or already as a result of the temperature increase of the structural elements to which the thermal energy is transferred by ignition or explosion, secondary reactions can occur, for example subsequent ignition on further areas of the installation concerned. [0003] Electrically operated devices in hazardous areas of such insta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C4/00
CPCA62C4/00B01D39/12B01D46/12
Inventor 伊内斯·巴尔兹
Owner R STAHL SCHALTGERATE GMBH
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