Abstract: An explosion-protected housing having a housing body, a frame part and at least two separate covers. The housing body delimits an interior space which is open at one side by means of a housing opening. The frame part has a circumferential web surrounding the housing opening. Extending within the circumferential web is a central web of the frame part that divides the housing opening into at least two opening portions. A cover abutment surface is formed, against which the covers bear in their closed position. An encirclingly closed flameproof gap is formed between each cover and the cover abutment surface when the cover is situated in the closed position and is detachably fastened by means of one or more connecting units to the frame part.

Abstract: A protective housing in explosion-protection-type pressure-proof encapsulation. At least one device for reducing explosive pressure is associated with the housing. The housing includes a first housing part having a first sealing surface and a second housing part having a second sealing surface, wherein, when the housing is in the closed pressure-proof state, a resilient seal is held between the first sealing surface and the second sealing surface so as to be elastically deformed, and, as a result, closes the space between the first sealing surface and the second sealing surface in a flame-proof manner in the event of an explosion inside the housing. The flame-proof arrangement can replace a planar gap between, for example, a surface of a cover and a surface of a housing part, which gap requires conformity to relatively narrow manufacturing tolerances.

Abstract: A flame trap filter including a grid structure, wherein the grid structure determines grid openings which are bordered by intersecting strip sections, and/or wherein the grid structure is formed by a laid scrim. A method for producing a grid structure of a flame trap filter includes the step of allowing a substance to solidify on a substrate, in order to form at least one strip section of the grid structure. Alternatively or in addition, the method includes the step of compressing a material for the flame trap filter or a semi-finished product of the flame trap filter at points, e.g. by mechanically deforming the material or the semi-finished product, in order to form at least one strip section of the grid structure.

Abstract: A housing that can be provided on the inside with a lining, made of an open-pore material and preferably covering at least two sides of the housing, for the reduction of internal explosion pressure. In addition, or alternatively, a molded body made of the open-pore material, in particular a bonded fiber material, can be arranged in the housing. Methods are used to provide an assembly of an open-pore material and a flameproof body in order to create an assembly that has a higher temperature class and/or a higher flameproofing class than those for which the flameproof body is designed.

Abstract: A module for producing a housing, in particular a housing of the ‘flameproof enclosure’ protection type, is provided, wherein the housing surrounds an interior space suitable for accommodating components that can form ignition sources. The module establishes at least one module interior space, which is fluidically connected to the interior space of the housing via a connection opening. The module can be used to produce vented housings having different interior volumes.

Abstract: The invention relates to an explosion-proof arrangement (10) with an explosion-proof housing (11) which has a wall opening (23) in a housing wall (12). The wall thickness (d) of the housing wall (12) is so small that it is not possible to form a thread there in order to screw in a connecting body (15) for a line to pass through or for receiving an assembly so as to ensure protection against flame transmission. According to the invention, a connecting body (25), which has a flange (38) with a flange face (39), is inserted into the wall opening (23). The flange face (39) delimits a flameproof gap (58) by way of the housing wall (12). The dimensions of a gap or intermediate space between the connecting body (25) and a boundary face (24) of the housing wall (12), which boundary face delimits the wall opening (23), are not important. The protection against flame transmission can be provided solely by the flameproof gap (58) between the flange face (39) and the housing wall (12).

Abstract: An explosion-proof housing having a cover arrangement which includes two or more covers. The covers are adjacent to a flameproof gap in the housing body (11). A flameproof gap is likewise arranged between the individual covers. Special seals, more particularly in the form of a butt joint closure, are arranged on the remaining butt joints or other gaps and through-holes.

Abstract: An explosion-proof apparatus with an explosion-proof housing and a cooling device. The explosion-proof housing has a plurality of outer walls enclosing a housing interior. A pressure-relief arrangement of the cooling device has at least one pressure relief opening with at least one gas-permeable, flameproof pressure-relief body. The pressure-relief opening passes through at least one of the outer walls. The cooling device also has at least one heat sink which forms at least one heat sink wall part of one the outer walls and which, as a heat sink wall part of this outer wall, directly borders, on its outer face, the surrounding area and directly borders, on its inner face, the housing interior.

Abstract: A pressure relief device including a gas-permeable body to which a membrane adheres that is preferably impermeable to moisture. The membrane can be a rubber membrane that is formed by applying liquid rubber to the pressure relief body and, optionally, a component which supports the liquid rubber and surrounds the pressure relief body.

Abstract: An explosion-proof housing having external walls, which enclose a housing interior so as to be proof against ignition penetration relative to an atmosphere at risk of explosion. At least one insert is arranged in at least one outer wall. The insert facilitates a gas flow between the housing interior and an environment around the housing. The at least one insert is configured in such a way that a gas flow having a sufficient mass flow or volumetric flow rate is permitted, but a flow connection which is proof against ignition penetration is produced. Attached to the outer wall having the at least one insert is a guiding means which together with the relevant outer wall delimits a flow channel. The flow channel defines a main flow direction of a main gas flow through the flow channel substantially parallel to the directly adjoining outer wall. In this way, the gas exchange between the environment and the housing interior can be improved and facilities arranged in the housing interior can be cooled.

Abstract: A housing according of the flameproof encapsulation protection type having a housing body which has an opening closed by a cover. The opening is surrounded by a flange which is directed outward away from the housing body. The edge of the cover lies flat on the flange. The edge and the flange are both preferably continuous. In any case, the edge and the flange do not have any passage openings for clamping means. In order to clamp the edge against the flange, clamps are provided which hold the edge and the flange pressed against each other in the manner of screw clamps. The clamps are provided with releasable clamping means and are preferably captively retained on the housing body or the cover, the clamps being movable between a closed position, in which the cover is fixedly clamped, and an open position, in which the clamps do not extend over the cover and allow the cover to be opened unhindered.

Abstract: A housing with an inner lining, made of an open-pore material, preferably covering at least two sides of the housing, for the reduction of internal explosion pressure. In addition, or alternatively, a molded body made of the open-pore material, for example a bonded fibrous material, may be arranged in the housing.

Abstract: An explosion-proof housing 10 having at least one pressure relief body 15 arranged in a pressure compensation vent opening 14 of one of the housing parts 12, 13. In order to secure the pressure relief body 15 to the housing part 12, a thickened region 20 of the housing part 12 engages over an edge zone 24 of the pressure relief body 15 along its entire peripheral surface 23 on both of its flat sides 16, 17. A resulting engaging depth Si, which is measured parallel to the flat sides 16, 17, is preferably greater than a thickness D1, D2 of the part of the thickened region 20 engaging over the edge zone 24. The pressure relief element 15 consists of sintered wire mesh. This connection is pressure-resistant and stable over a wide temperature range.

Abstract: An explosion-proof assembly (20) is provided for guiding at least one conductor device (21) through a wall without ignition transmission. The assembly (20) has at least one bushing part (24) arranged in the wall having one or more bushing openings, each of which is delimited in the circumferential direction by a bushing surface. A connecting body (23) is associated with each conductor device (21) coaxially surrounds a mounting portion of the conductor device (21) in a flamegap-free connection. The connecting body (23) has a first outer delimiting surface and the bushing opening defines a second delimiting surface. A flameproof Ex gap (34) is formed between the two delimiting surfaces by at least partial insertion of the connecting body (23) into the bushing opening. Bushing openings without a connecting body (23) are closed in a flameproof manner by a closure member (70). A securing device (52) secures the connecting body (23) in the bushing opening (48).

Abstract: An explosion-proof line bushing and method for producing the line bushing. A prespecified amount of elastomeric material is applied to a line and completely surrounds the line in a flat section in the circumferential direction. The line is inserted into a passage opening of a bushing body. The bushing body is preferably plastically deformed. After the plastic deformation, the elastomeric material substantially fills the volume remaining between the formed bushing body and line. The elastomeric material is elastically deformed and presses both against the line and the formed bushing body so that flame-proof gaps are formed between the bushing body and the line. The applied mass of the elastomeric material is determined depending on the inner volume between the formed bushing body and the line remaining.

Abstract: The luminaire according to the invention comprises an inner space that is separated into a first section and a second section by a separating wall. While the first section is free and comprises at least one light source, an operating circuit for the light source and/or other components that form potential ignition sources and/or other components that may not be considered as ignition sources are arranged in the second section. The second section is provided with an open pored fill material. The separating wall comprises at least one opening that allows a flow connection between the two sections. The section of the inner space provided with fill material serves as pressure relief volume for the first section, in which the light source is arranged. The fill material can fill the section completely or partly.

Abstract: The invention relates to an explosion-proof assembly (20) designed to guide at least one conductor device (21) through a wall in a flameproof manner. The assembly (20) has a bushing part (24) with a bushing opening (48) having a bushing surface (49). The bushing part (24) is arranged in the wall. The bushing opening (48) has an associated connecting body (23) with at least one conductor channel (29) through which a conductor device (21) extends. The connecting body (23) has a connecting portion (30), which is connected to the conductor (22) in a frictionally engaged and/or form-fitting manner by plastic deformation. A first delimiting surface (32) is formed on the plastically deformed connecting portion (30), and the bushing surface (49) defines a second delimiting surface (33). A flameproof Ex gap (34) is formed between the two delimiting surfaces (32, 33) by inserting the connecting portion (30) into the bushing opening (48).

Abstract: An explosion-protected housing having a housing body, a frame part and at least two separate covers. The housing body delimits an interior space which is open at one side by means of a housing opening. The frame part has a circumferential web surrounding the housing opening. Extending within the circumferential web is a central web of the frame part that divides the housing opening into at least two opening portions. A cover abutment surface is formed, against which the covers bear in their closed position. An encirclingly closed flameproof gap is formed between each cover and the cover abutment surface when the cover is situated in the closed position and is detachably fastened by means of one or more connecting units to the frame part.

Abstract: An explosion-proof apparatus with an explosion-proof housing and a cooling device. The explosion-proof housing has a plurality of outer walls enclosing a housing interior. A pressure-relief arrangement of the cooling device has at least one pressure relief opening with at least one gas-permeable, flameproof pressure-relief body. The pressure-relief opening passes through at least one of the outer walls. The cooling device also has at least one heat sink which forms at least one heat sink wall part of one the outer walls and which, as a heat sink wall part of this outer wall, directly borders, on its outer face, the surrounding area and directly borders, on its inner face, the housing interior.