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公开(公告)号：DE4209519C2
公开(公告)日：1995-06-29
申请号：DE4209519
申请日：1992-03-24
Applicant: PALL CORP
Inventor： RANDHAHN HORST DR , VOGELMANN HARTMUT DR
Abstract: A method of testing the integrity of a filter element in a falter assembly includes a) wetting filter material of a filter element having an inlet side and an outlet side connected to an outlet conduit, b) subjecting the inlet side of the filter element to a gas pressure, c) measuring the pressure in the outlet conduit as a function of time, with a downstream outlet valve for the outlet conduit being closed, and d) determining whether the pressure measured at a preselected time exceeds a reference pressure by a predetermined amount, or determining whether the time required to reach a preselected pressure is shorter than a reference time by a predetermined amount.
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公开(公告)号：DE19649661A1
公开(公告)日：1998-06-04
申请号：DE19649661
申请日：1996-11-29
Applicant: PALL CORP
Inventor： LOTZ MARKUS , RANDHAHN HORST DR , ALEX TONY , BERNDT ROLF , MUELLER GEBHARDT
Abstract: With a mashing process, the mash is fed to the filter material of a dynamic cross-flow filtration system, wort is withdrawn from the side-stream side of the filter material and thickened remainder is withdrawn from the feed side of the filter material.
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公开(公告)号：AT142896T
公开(公告)日：1996-10-15
申请号：AT93103753
申请日：1993-03-09
Applicant: PALL CORP
Inventor： RANDHAHN HORST DR , VOGELMANN HARTMUT DR , MEISTER MICHAEL
Abstract: An apparatus and a method for separating a suspension into a filtrate and a concentrate. There is provided a separation means and a method in which partial filtrates are collected as a plurality of filtrate streams in a plurality of parallel filtrate chambers. The filtrate chamber is divided into several partial filtrate chambers, each of which is connected to a different portion of a partially permeable wall or membrane and receives that part of the filtrate passing therethrough. Also, a relative motion is induced between the suspension and the wall or membrane by a rotating part, thus preventing clogging of the membrane. Furthermore, sensors are provided in the partial filtrate chambers, permitting more information about a dynamic separation process to be obtained.
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公开(公告)号：DE69304744D1
公开(公告)日：1996-10-24
申请号：DE69304744
申请日：1993-03-09
Applicant: PALL CORP
Inventor： RANDHAHN HORST DR , VOGELMANN HARTMUT DR , MEISTER MICHAEL
Abstract: An apparatus and a method for separating a suspension into a filtrate and a concentrate. There is provided a separation means and a method in which partial filtrates are collected as a plurality of filtrate streams in a plurality of parallel filtrate chambers. The filtrate chamber is divided into several partial filtrate chambers, each of which is connected to a different portion of a partially permeable wall or membrane and receives that part of the filtrate passing therethrough. Also, a relative motion is induced between the suspension and the wall or membrane by a rotating part, thus preventing clogging of the membrane. Furthermore, sensors are provided in the partial filtrate chambers, permitting more information about a dynamic separation process to be obtained.
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Patent Agency Ranking
公开(公告)号：DE69304744T2
公开(公告)日：1997-01-30
申请号：DE69304744
申请日：1993-03-09
Applicant: PALL CORP
Inventor： RANDHAHN HORST DR , VOGELMANN HARTMUT DR , MEISTER MICHAEL
Abstract: An apparatus and a method for separating a suspension into a filtrate and a concentrate. There is provided a separation means and a method in which partial filtrates are collected as a plurality of filtrate streams in a plurality of parallel filtrate chambers. The filtrate chamber is divided into several partial filtrate chambers, each of which is connected to a different portion of a partially permeable wall or membrane and receives that part of the filtrate passing therethrough. Also, a relative motion is induced between the suspension and the wall or membrane by a rotating part, thus preventing clogging of the membrane. Furthermore, sensors are provided in the partial filtrate chambers, permitting more information about a dynamic separation process to be obtained.
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公开(公告)号：DE59003979D1
公开(公告)日：1994-02-03
申请号：DE59003979
申请日：1990-12-24
Applicant: PALL CORP
Inventor： BAUMBACH FRANK , OTTO ULRICH , RANDHAHN HORST DR
Abstract: An arrangement for connecting two parts of a fluid system, preferably an aseptic system, by which the pressure gradient acts from the outside to the inside. The one system part carries an O-ring in a groove open to the other system part and open radially outwardly and the other system part is pressed against the O-ring by an axial holding device. To avoid dead space, in which bacteria could deposit, a space formed by the O-ring, the two system parts and the axial holding device is provided with a communication to the surroundings.
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公开(公告)号：DE4209519A1
公开(公告)日：1993-09-30
申请号：DE4209519
申请日：1992-03-24
Applicant: PALL CORP
Inventor： RANDHAHN HORST DR , VOGELMANN HARTMUT DR
Abstract: A method of testing the integrity of at least one filter element in a filter assembly, the filter element or elements being connected to a common outlet conduit, is described, wherein the method comprises the steps: a) wetting the filter material of said at least one filter element, b) subjecting the inlet side of the filter element having wetted filter material to a gas pressure, c) measuring the pressure (Pi) in the outlet conduit as a function of time, with a downstream outlet valve being closed, d) determining whether the pressure measured at a preselected time exceeds a reference pressure by a predetermined amount, or determining whether the time required to reach a preselected pressure is shorter than a reference time by a predetermined amount.
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公开(公告)号：DE4342782C2
公开(公告)日：1998-02-26
申请号：DE4342782
申请日：1993-12-15
Applicant: PALL CORP EAST HILLS
Inventor： RANDHAHN HORST DR
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公开(公告)号：ES2047238T3
公开(公告)日：1994-02-16
申请号：ES90125453
申请日：1990-12-24
Applicant: PALL CORP
Inventor： BAUMBACH FRANK , OTTO ULRICH , RANDHAHN HORST DR
Abstract: An arrangement for connecting two parts of a fluid system, preferably an aseptic system, by which the pressure gradient acts from the outside to the inside. The one system part carries an O-ring in a groove open to the other system part and open radially outwardly and the other system part is pressed against the O-ring by an axial holding device. To avoid dead space, in which bacteria could deposit, a space formed by the O-ring, the two system parts and the axial holding device is provided with a communication to the surroundings.
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