摘要:
Selective etching techniques are used to manufacture a basic filtration element, which can then be used as a basis for constructing various devices for different applications. In this process, sheets of etchable material are etched from one or both sides of that sheet to form channels in a premasked pattern, which controls the minimum opening of the filtration element. The desired channel opening is only limited by the capability of the photochemical etching system being used. Alternatively, a filter element may be made by rolling or extruding a first sheet to form a plurality of recessed areas bordered by lands, selectively etching or punching through the recessed pattern areas, and bonding a second sheet having a plurality of etched or punched through areas to the first sheet, and, aligning the etched through areas to the second sheet with the recessed areas of the first sheet.
摘要:
A microstructured filter for a fluid, the filter having an inlet for unfiltered fluid and an outlet for filtered fluid, the filter comprising: a plurality of projections (7) which are arranged in at least two rows (3) in mutually juxtaposed relationship and which project out of a base plate (1) and which are an integral component of the base plate, a plurality of passages (8) between the projections (7), and a cover plate which is securable to the base plate to cover the projections (7) and the passages (8), wherein the passages form a plurality of through paths from the inlet to the outlet, said inlet comprises an elongate inlet slot (5) for the unfiltered fluid, which extends over approximately the entire filter width and which is approximately as high as the projections (7) projecting out of the base plate, on the inlet side of the filter, and said outlet comprises an elongate outlet slot for the filtered fluid, which extends over approximately the entire filter width and which is approximately as high as the projections (7) projecting out of the base plate, on the outlet side of the filter. The filter according to the invention remains operational, even if a part of the filter area is obstructed. The filter is used for example in an atomiser with which an aerosol is produced from a fluid which contains a medicament.
摘要:
A multiple disc filter having a plurality of discs (10, 20) arranged in a stack with a face of each disc in contact with a face of the next adjacent disc in the stack; the contacting faces of the discs including surface formations defining small filtering passageways between the contacting faces of adjacent discs for filtering a fluid passing between the contacting faces; the surface formations including a rib array (11) of spaced rib sections (11a) integrally formed on a flat surface of one of the contacting faces; and a protrusion array of spaced discrete protrusions (21) spacing the rib array of the one contacting face from a flat surface of the other contacting face.
摘要:
Selective etching techniques are used to manufacture a basic filtration element, which can then be used as a basis for constructing various devices for different applications. In this process, sheets of etchable material are etched from one or both sides of that sheet to form channels in a premasked pattern, which controls the minimum opening of the filtration element. The desired channel opening is only limited by the capability of the photochemical etching system being used. Alternatively, a filter element may be made by rolling or extruding a first sheet to form a plurality of recessed areas bordered by lands, selectively etching or punching through the recessed pattern areas, and bonding a second sheet having a plurality of etched or punched through areas to the first sheet, and, aligning the etched through areas to the second sheet with the recessed areas of the first sheet.
摘要:
A microstructured filter for a fluid, the filter having an inlet for unfiltered fluid and an outlet for filtered fluid, the filter comprising: a plurality of projections (7) which are arranged in at least two rows (3) in mutually juxtaposed relationship and which project out of a base plate (1) and which are an integral component of the base plate, a plurality of passages (8) between the projections (7), and a cover plate which is securable to the base plate to cover the projections (7) and the passages (8), wherein the passages form a plurality of through paths from the inlet to the outlet, said inlet comprises an elongate inlet slot (5) for the unfiltered fluid, which extends over approximately the entire filter width and which is approximately as high as the projections (7) projecting out of the base plate, on the inlet side of the filter, and said outlet comprises an elongate outlet slot for the filtered fluid, which extends over approximately the entire filter width and which is approximately as high as the projections (7) projecting out of the base plate, on the outlet side of the filter. The filter according to the invention remains operational, even if a part of the filter area is obstructed. The filter is used for example in an atomiser with which an aerosol is produced from a fluid which contains a medicament.
摘要:
A multiple disc filter having a plurality of discs (10, 20) arranged in a stack with a face of each disc in contact with a face of the next adjacent disc in the stack; the contacting faces of the discs including surface formations defining small filtering passageways between the contacting faces of adjacent discs for filtering a fluid passing between the contacting faces; the surface formations including a rib array (11) of spaced rib sections (11a) integrally formed on a flat surface of one of the contacting faces; and a protrusion array of spaced discrete protrusions (21) spacing the rib array of the one contacting face from a flat surface of the other contacting face.
摘要:
Die Erfindung bezieht sich auf eine Filtereinrichtung (1), insbesondere zum Abscheiden von Dieselrußpartikel aus Dieselmotorabgasen, mit einem Filtergehäuse (2), das einen Gaseintritt (7, 8) und einen Austrittskanal (10) aufweist und in dem ein Filterkörper aus porösem, filterwirksamem Keramikmaterial angeordnet ist, der den Austrittskanal (10) wenigstens teilweise umgibt und im wesentlichen in Richtung auf den Austrittskanal (10) durchströmt ist, wobei der Filterkörper von gestapelten Filterscheiben (11, 12) aus porösem, filterwirksamem Material gebildet ist, die abwechselnd einströmseitig und ausströmseitig offene Zwischenräume (17, 18) trennen. Die Filtereinrichtung ist dadurch gekennzeichnet, daß der Gaseintritt (7, 8) auf Höhe des Filterkörpers liegt und quer zum Austrittskanal (10) gerichtet ist.
摘要:
A microstructured filter for a fluid, the filter having an inlet for unfiltered fluid and an outlet for filtered fluid, the filter comprising: a plurality of projections (7) which are arranged in at least two rows (3) in mutually juxtaposed relationship and which project out of a base plate (1) and which are an integral component of the base plate, a plurality of passages (8) between the projections (7), and a cover plate which is securable to the base plate to cover the projections (7) and the passages (8), wherein the passages form a plurality of through paths from the inlet to the outlet, said inlet comprises an elongate inlet slot (5) for the unfiltered fluid, which extends over approximately the entire filter width and which is approximately as high as the projections (7) projecting out of the base plate, on the inlet side of the filter, and said outlet comprises an elongate outlet slot for the filtered fluid, which extends over approximately the entire filter width and which is approximately as high as the projections (7) projecting out of the base plate, on the outlet side of the filter. The filter according to the invention remains operational, even if a part of the filter area is obstructed. The filter is used for example in an atomiser with which an aerosol is produced from a fluid which contains a medicament.