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WO2016142031A1 - Filter and filter system - Google Patents

Filter and filter system Download PDF

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Publication number
WO2016142031A1
WO2016142031A1 PCT/EP2016/000288 EP2016000288W WO2016142031A1 WO 2016142031 A1 WO2016142031 A1 WO 2016142031A1 EP 2016000288 W EP2016000288 W EP 2016000288W WO 2016142031 A1 WO2016142031 A1 WO 2016142031A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
filter housing
inlet
fluid
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2016/000288
Other languages
German (de)
French (fr)
Inventor
Peter Groth
Andreas LETTAU
Gerhard EBERLEIN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Donaldson Filtration Deutschland GmbH
Original Assignee
Donaldson Filtration Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Donaldson Filtration Deutschland GmbH filed Critical Donaldson Filtration Deutschland GmbH
Priority to EP16708354.2A priority Critical patent/EP3268108A1/en
Publication of WO2016142031A1 publication Critical patent/WO2016142031A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/001—Filters in combination with devices for the removal of gas, air purge systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
    • B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/28—Position of the filtering element
    • B01D2201/287—Filtering elements with a vertical or inclined rotation or symmetry axis

Definitions

  • the invention relates to a filter for the filtration of a fluid with a filter housing, which has an inlet and outlet.
  • the filter further includes a filter element disposed in the filter housing such that fluid passing through the inlet into the filter housing flows through the fluid and the fluid flowing through the filter element exits the filter housing through the outlet.
  • Such filters are used for example for the filtration of fluids in the chemical, pharmaceutical or food industry. They usually have a cylindrical shape and are vertically positioned. Both inlet and outlet are usually mounted in the lower area, in particular on the underside of the filter housing.
  • air remaining in the filter housing can have a very detrimental effect on the filtrate and the filtration process. This is the case, for example, in the food industry It is of utmost importance that drinks such as milk are sterile after sterile filtration. However, residual air in the filter housing causes the process temperature to drop and thus bacteria, viruses and other pathogens can not die.
  • Partial remedy is created by means of vent valves.
  • the deaeration process takes a certain amount of time, which cancels the effective production time. This is especially true for manually operated vent valves, this also still workers have to be turned off. But even automatic valves do not prevent in most cases that the filtration process for the venting must be interrupted.
  • automatic valves are usually part of a complex automation system with computer units, sensors,
  • Object of the present invention is therefore to propose a substantially self-venting filter, which does not require ventilation devices such as vent valves.
  • the essence of the invention provides to provide a filter of the type described, in which the inlet is arranged below the outlet.
  • Suitable fluids according to the invention are liquids and gases. These may also contain solid components such as solid particles. Particularly advantageous, the invention has an effect on the filtration of liquid fluids. It is often very difficult to transport liquids into the filter without air and other unwanted gases. For example, at the start of the process, trapped air volumes are located in the pipe systems connected upstream of the filter housing, which are in line with the inflowing air As a result, venting of the filter housing is often indispensable.
  • the filter according to the invention has a particularly advantageous effect on filter housings whose length is much greater than their width or diameter.
  • Such filter housings in a preferred embodiment have a substantially cylindrical shape and are usually positioned upright, which makes them particularly prone to trap large amounts of air.
  • these filter housings often have a thin, usually millimeter-thin, wall, so that almost their entire volume is available as a potential air reservoir.
  • any shape of the filter housing is conceivable.
  • the filter housing with upstream or downstream process sections or process units by means of connecting elements such. B. pipes connected.
  • filter element encompasses both individual filter elements and filter units comprising a plurality of filter elements. All known filter elements are basically suitable as filter element For example, fiberglass nonwoven fabrics are known from the prior art and can operate according to various functional principles, such as depth filtration or surface filtration.
  • the filter element is arranged in the filter housing such that it is flowed through by the fluid flowing through the inlet into the filter housing and the fluid flowing through the filter element exits the filter housing through the outlet.
  • the fluid must pass through the filter element before it emerges from the filter housing. Possibilities of the exact arrangement and attachment of the filter element in the filter housing are known in the art.
  • the inlet allows the fluid to enter the filter housing and flow through the filter element, whereas the outlet allows the filtered fluid to exit the filter housing.
  • the filter housing each have an inlet and an outlet.
  • the inlet is attached to the geodetically lower region and / or the outlet is attached to the geodetic upper region of the filter housing.
  • the term "geodesic lower area” is understood to mean the area of the filter housing which has the smallest vertical distance from the ground or ground. Accordingly, the "geodetically upper area” is the area with the greatest vertical distance from the same ground ,
  • the vertical distance from the ground and not about the distance along the longitudinal axis of the filter housing is authoritative. This is crucial in cases where the longitudinal axis does not coincide with the vertical. This is the case, for example, when a filter housing is screwed in or placed obliquely or horizontally. Since air usually accumulates in the highest part of a housing, the vertical distance from the ground must be considered.
  • Area in the term “geodesic upper area” or “geodesic lower area” is to be understood as about one tenth of the length from the geodetically lowest to the geodetically highest point of the filter housing.
  • the inlet is attached to the bottom and the outlet is attached to the top of the filter housing. Also conceivable are lateral attachments. However, it is conceivable, but not preferred, to attach the inlet to any other than the geodetic lower portion of the filter housing.
  • the outlet is attached to the geodetically highest point of the filter housing. It can also be several sites for the geodesic highest point in question. This is particularly the case when the top of the filter housing is in a horizontal plane.
  • the geodetically highest point is arranged centrally on the upper side. The same applies to the geodetically lowest point of the filter housing: this is advantageously arranged centrally on the underside of the filter housing.
  • venting devices such as valves and their operation and control can thus be eliminated. This also eliminates the process interruption for venting operations, which in turn leads to a more economical production time. By dispensing with additional system components such as bleeder valves and venting In addition, a space-saving design is made possible. It has also been found that venting components such as valves are susceptible to failure in certain production conditions, which may adversely affect the filtrate, process and equipment. Even with complex maintenance work, defects and failures can not be ruled out.
  • the attachment of the outlet at the geodetically highest point of the filter housing affects, although the inlet is still attached to the geodesic lowest point.
  • the fluid flows from the inlet to the outlet without major changes in direction. Larger air accumulations or adhesions, for example, in the filter element, which may occur, for example, in the filter element. B. as a result of flow turbulence, can thus be reduced or avoided.
  • the invention likewise relates to a filter system with at least two filters connected in series according to the invention.
  • the filter housing of the one filter is arranged above the filter housing of the other filter.
  • z. B. a multi-stage filter system are created in which about the lower filter can act as a pre-filter and the upper filter as a sterile filter.
  • series connection according to the invention is meant that a fluid flowing out of the outlet of the lower filter housing then flows into the latter through the inlet of the upper filter housing.
  • the filter housings are therefore fluid-permeable connected to each other.
  • the outlet is attached to the geodetically highest point of the upper filter housing and the inlet to the geodetically lowest point of the lower filter housing.
  • the filter housings of the filter system are connected directly to one another.
  • Particularly preferred are the outlet of the lower filter housing and the inlet of the upper filter housing at the same location.
  • a flange connection or a simple plug-in connection comes in
  • connection is fluid-tight, so no fluid can escape at the junction.
  • Suitable sealing elements such.
  • B. O-rings can be used here.
  • the filter housings are indirectly connected to each other via an intermediate part. This may be z. B. act an adapter or a pipe.
  • the interior of the connection or transition area between the lower and upper filter housings, through which the fluid flows has no or at least scarcely any points which are not detected by the fluid flow, as shown in FIG. For example, "dead corners.” This prevents air from accumulating and remaining in the filter system, for example, by avoiding undercutting.
  • connection points between the upper and lower filters are particularly preferably modular, d. h., They are coordinated and allow a quick and easy assembly. As a result, a filter system with any number of filter stages can be constructed in the simplest way.
  • the lowermost filter housing has a condensate drain attached to the geodetic lower region.
  • the filter system according to the invention it was recognized that it is sufficient in the filter system according to the invention to attach only one Kondensatabieiter geodetically lower portion of the bottom filter housing. Most preferably, the attachment is at the geodesic lowest point or in the vicinity of the inlet attached to the geodesic lowest point. Due to the fluid-permeable connection of the superimposed, in particular vertical, arranged filter housing and the effect of gravity, the condensates of the entire filter system accumulate in the geodesic lower region of the bottom filter housing. This can be saved additional Kondensatabieiter.
  • the filter housing on a particular tubular approach for the connection of Kondensatabieiters.
  • the filter according to the invention or the filter system according to the invention is outstandingly suitable for the filtration of fluids in the chemical, pharmaceutical or food industry and for fluids in mechanical engineering, the automotive industry, in biological processes, biorectors and in the field of environmental technology.
  • this is not a limitation; Rather, basically all application areas of fluid filtration come into consideration.
  • fluids examples include drinks such as milk, juices or soft drinks, pharmaceutical products and pharmaceuticals, color dispersions, motor oils and many more.
  • the filter according to the invention or the filter system according to the invention can be used for a variety of filtration purposes such. As the prefiltration, sterile filtration, steam filtration, fine filtration and many more.
  • the invention will be explained in more detail with reference to the following drawing, which shows only an advantageous embodiment of the invention. It shows:
  • Fig. 1 is a sectional view of an exemplary filter system with two filters connected in series.
  • Figure 1 shows a sectional view of a filter system 1, which consists of two filters 2 and 3 connected in series. The section runs along the longitudinal axis of the filter system.
  • the upper filter 2 has a filter housing 2.1 and a filter element 2.2, which is arranged in the filter housing 2.
  • the filter element 2.2 is a hollow cylindrical filter insert and for clarity sake shown schematically by a rectangle.
  • the filter housing 2.1 also has an inlet 2.3 and a Ausiass 2.4.
  • the inlet 2.3 is located at the geodetically lowest point of the filter housing 2.
  • the Ausiass 2.4 is attached to the geodetically highest point of the filter housing 2.1.
  • the lower filter 3 has a filter housing 3.1, a filter element 3.2 and an inlet 3.3 and Ausiass 3.4.
  • the inlet 3.3 is located at the geodesic lowest point and the Ausiass 3.4 at the geodetically highest point.
  • the filter housing 3.1 of the lower filter 3 has a tubular extension 3.5 as a connection point for a Kondensatabieiter (not shown), which is mounted in the vicinity of the inlet 3.3.
  • a pipe 4 is connected at the inlet 3.3 of the lower filter housing 3.1.
  • a pipe 5 is also connected at Ausiass 2.4 of the upper filter housing 2.1 .
  • a filter to be filtered fluid is supplied to the filter system.
  • the fluid enters via the inlet 3.3 in the lower filter housing 3.1 and then flows through the filter element 3.2.
  • the fluid is pre-filtered and then passes through the Ausiass 3.4 of the lower filter housing 3.1, which is located at the same point as the inlet 2.3 of the upper filter housing 2.1, from the lower filter housing 3.1 and in the upper filter housing 2.1 a.
  • the prefiltered fluid flows through the filter element 2.2.
  • This can be a sterile filtration.
  • the sterile-filtered fluid leaves the filter system 1 via the outlet 2.4 of the upper filter housing 2.1 and is guided via the tube 5 to the next process section. This is indicated by the upper spring arrow.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention relates to a filter for the filtration of a fluid, having a filter housing which has an inlet and an outlet. The filter furthermore comprises a filter element which is arranged in the filter housing such that it is flowed through by the fluid entering the filter housing through the inlet and the fluid that has flowed through the filter element exits the filter housing through the outlet. Here, the inlet is situated on the lower region and the outlet is situated on the upper region of the filter housing. The invention also relates to a filter system composed of at least two filters according to the invention.

Description

"Filter und Filtersvstem"  "Filters and Filters"

Die Erfindung betrifft einen Filter zur Filtration eines Fluids mit einem Filtergehäuse, welches einen Ein- und Auslass aufweist. Der Filter umfasst ferner ein Filterelement, das im Filtergehäuse derart angeordnet ist, dass es von dem durch den Einlass in das Filtergehäuse eintretenden Fluid durchströmt wird und das das Filterelement durchströmthabende Fluid durch den Auslass aus dem Filtergehäuse austritt. The invention relates to a filter for the filtration of a fluid with a filter housing, which has an inlet and outlet. The filter further includes a filter element disposed in the filter housing such that fluid passing through the inlet into the filter housing flows through the fluid and the fluid flowing through the filter element exits the filter housing through the outlet.

Derartige Filter werden beispielsweise zur Filtration von Fluiden in der chemischen, pharmazeutischen oder Lebensmittelindustrie eingesetzt. Sie weisen meist eine zylindrische Form auf und sind vertikal aufgestellt. Sowohl Einlass als auch Auslass sind meist im unteren Bereich, insbesondere an der Unterseite des Filtergehäuses angebracht. Such filters are used for example for the filtration of fluids in the chemical, pharmaceutical or food industry. They usually have a cylindrical shape and are vertically positioned. Both inlet and outlet are usually mounted in the lower area, in particular on the underside of the filter housing.

In vielen Fällen lässt es sich nicht vermeiden, dass Luft oder anderer unerwünschte Gase mit dem durch den Einlass einströmenden Fluid in das Filtergehäuse eingetragen werden. Dies kann z. B. auf Luft zurückzuführen sein, die sich vor Filtrationsbeginn in dem dem Filtergehäuse vorgeschalteten Rohrsystem befindet und durch das dann eintretende Fluid in das Filtergehäuse eingeschoben wird. Dort angekommen, sammelt sich die Luft an verschiedenen Stellen, aber vor allem im oberen Bereich des Filtergehäuses an. Da sich bei konventionellen Filtern der Auslass im unteren Bereich des Filtergehäuses befindet, gelingt es nicht, dass die Luft mit dem Fluid ausgespült wird. In many cases, it is unavoidable that air or other undesirable gases are introduced into the filter housing with the fluid flowing through the inlet. This can be z. B. due to air, which is located before the beginning of filtration in the filter housing upstream pipe system and is then inserted through the then entering fluid into the filter housing. Once there, the air collects in different places, but especially in the upper part of the filter housing. Conventional filters have the outlet in the lower part of the filter housing, so it is not possible for the air to be flushed out with the fluid.

Im Filtergehäuse verbleibende Luft kann sich aber sehr nachteilig auf das Filtrat und den Flltrationsprozess auswirken. So ist es beispielsweise in der Lebensmittelindustrie von höchster Wichtigkeit, dass Getränke wie Milch nach der Sterilfiltration keimfrei sind. Restluft im Filtergehäuse führt allerdings dazu, dass sich die Prozesstemperatur absenkt und dadurch Bakterien, Viren und andere Krankheitserreger nicht absterben können. However, air remaining in the filter housing can have a very detrimental effect on the filtrate and the filtration process. This is the case, for example, in the food industry It is of utmost importance that drinks such as milk are sterile after sterile filtration. However, residual air in the filter housing causes the process temperature to drop and thus bacteria, viruses and other pathogens can not die.

Zudem kann es durch die eingeschlossene Luft zu Funktionsbeeinträchtigungen des Filterelements kommen, was sich ebenfalls nachteilig auf das Filtrat auswirkt. In addition, it may be due to the trapped air to functional impairments of the filter element, which also adversely affects the filtrate.

Teilweise wird Abhilfe mittels Entlüftungsventilen geschaffen. Der Entlüftungsprozess nimmt jedoch eine gewisse Zeit in Anspruch, die der effektiven Produktionszeit abhandenkommt. Dies gilt vor allem für manuell zu betätigende Entlüftungsventile, wobei hierfür außerdem noch Arbeitskräfte abgestellt werden müssen. Aber auch automatische Ventile verhindern in den meisten Fällen nicht, dass der Filtrationsprozess für die Entlüftung unterbrochen werden muss. Zudem sind automatische Ventile in der Regel Teil eines komplexen Automatisierungssystems mit Rechnereinheiten, Sensoren,Partial remedy is created by means of vent valves. However, the deaeration process takes a certain amount of time, which cancels the effective production time. This is especially true for manually operated vent valves, this also still workers have to be turned off. But even automatic valves do not prevent in most cases that the filtration process for the venting must be interrupted. In addition, automatic valves are usually part of a complex automation system with computer units, sensors,

Stellgliedern etc. Hinzu kommt der Wartungsaufwand für Ventile und derartige Systeme, da sie sonst fehleranfällig arbeiten, was folgenschwere Auswirkungen auf die Produktqualität, den Filtrationsprozess und die Produktionsanlage haben kann. Aufgabe der vorliegenden Erfindung ist es daher, einen im Wesentlichen selbstentlüftenden Filter vorzuschlagen, der ohne Entlüftungsvorrichtungen wie Entlüftungsventilen auskommt. Actuators, etc. In addition, the maintenance of valves and such systems, since they otherwise work error-prone, which can have serious consequences on the product quality, the filtration process and the production plant. Object of the present invention is therefore to propose a substantially self-venting filter, which does not require ventilation devices such as vent valves.

Die Aufgabe wird durch den Gegenstand des Anspruchs 1 gelöst. Vorteilhafte Ausführungsformen sind in den Unteransprüchen und der hiernach folgendenThe object is solved by the subject matter of claim 1. Advantageous embodiments are given in the subclaims and the following

Beschreibung angegeben. Description given.

Der Kern der Erfindung sieht vor, einen Filter der eingangs bezeichneten Art bereitzustellen, bei dem der Einlass unterhalb des Auslasses angeordnet ist. The essence of the invention provides to provide a filter of the type described, in which the inlet is arranged below the outlet.

Dadurch wird ermöglicht, dass sich keine oder kaum Luftansammlungen im Filtergehäuse bilden können. Mit der Fluidströmung werden Luft und andere unerwünschte Gase durch den am oberen Bereich des Filtergehäuses angebrachten Auslass aus dem Filtergehäuse befördert. This makes it possible that little or no accumulation of air can form in the filter housing. With the fluid flow, air and other undesirable gases are carried out of the filter housing through the outlet located at the top of the filter housing.

Als Fluid kommen erfindungsgemäß Flüssigkeiten und Gase in Frage. Diese können auch feste Bestandteile wie Feststoffpartikel enthalten. Besonders vorteilhaft wirkt sich die Erfindung auf die Filtration flüssiger Fluide aus. Es ist oftmals sehr schwierig, Flüssigkeiten ohne Luftmengen und anderen unerwünschten Gasen in den Filter zu beför- dem. So befinden sich beispielsweise zu Prozessbeginn eingeschlossene Luftmengen in den dem Filtergehäuse vorgeschalteten Rohrsystemen, die mit dem einströmenden Fluid in das Filtergehäuse„eingeschoben" werden. Infolgedessen ist eine Entlüftung des Filtergehäuses oftmals unabdingbar. Suitable fluids according to the invention are liquids and gases. These may also contain solid components such as solid particles. Particularly advantageous, the invention has an effect on the filtration of liquid fluids. It is often very difficult to transport liquids into the filter without air and other unwanted gases. For example, at the start of the process, trapped air volumes are located in the pipe systems connected upstream of the filter housing, which are in line with the inflowing air As a result, venting of the filter housing is often indispensable.

Besonders vorteilhaft wirkt sich der erfindungsgemäße Filter bei Filtergehäusen aus, deren Länge viel größer als deren Breite oder Durchmesser ist. Derartige Filtergehäuse weisen in einer bevorzugten Ausführungsform eine im Wesentlichen zylindrische Form auf und werden meistens aufrecht positioniert, wodurch sie besonders anfällig sind, große Luftmengen einzuschließen. Zudem weisen diese Filtergehäuse oftmals eine dünne, meist millimeterdünne, Wandung auf, sodass nahezu ihr ganzes Volumen als potentieller Luftspeicher zur Verfügung steht. Grundsätzlich ist jedoch jede Form des Filtergehäuses denkbar. Auch kann das Filtergehäuse aus jedem denkbaren Werkstoff bestehen, z. B: aus Edelstahl. The filter according to the invention has a particularly advantageous effect on filter housings whose length is much greater than their width or diameter. Such filter housings in a preferred embodiment have a substantially cylindrical shape and are usually positioned upright, which makes them particularly prone to trap large amounts of air. In addition, these filter housings often have a thin, usually millimeter-thin, wall, so that almost their entire volume is available as a potential air reservoir. In principle, however, any shape of the filter housing is conceivable. Also, the filter housing made of any conceivable material, for. B: made of stainless steel.

Üblicherweise ist das Filtergehäuse mit vor- oder nachgeschalteten Prozessabschnitten oder Prozessaggregaten mittels Verbindungselemente wie z. B. Rohre verbunden. Usually, the filter housing with upstream or downstream process sections or process units by means of connecting elements such. B. pipes connected.

Der Begriff „Filterelement" umfasst gemäß der Erfindung sowohl einzelne Filterelemente als auch Filtereinheiten aus mehreren Filterelementen. Als Filterelement kommen grundsätzlich alle bekannten Filterelemente in Betracht. Bevorzugt sind hohlzylindrische Filtereinsätze. Üblicherweise umfasst das Filterelement ein Filtermedium, d.h. das eigentliche Filtermaterial. Filtermedien bzw. Filtermaterialien wie z. B. Glasfaservlies sind aus dem Stand der Technik bekannt. Sie können nach verschiedenen Funktionsprinzipien wie beispielsweise der Tiefenfiltration oder Oberflächenfiltration arbeiten. According to the invention, the term "filter element" encompasses both individual filter elements and filter units comprising a plurality of filter elements.All known filter elements are basically suitable as filter element For example, fiberglass nonwoven fabrics are known from the prior art and can operate according to various functional principles, such as depth filtration or surface filtration.

Das Filterelement ist im Filtergehäuse derart angeordnet, dass es von dem durch den Einlass in das Filtergehäuse einströmende Fluid durchströmt wird und das das Filterelement durchströmthabende Fluid durch den Auslass aus dem Filtergehäuse austritt. Zweckgemäß muss also das Fluid das Filterelement passieren, bevor es aus dem Filtergehäuse austritt. Möglichkeiten der genauen Anordnung und der Befestigung des Filterelements im Filtergehäuse sind dem Fachmann bekannt. The filter element is arranged in the filter housing such that it is flowed through by the fluid flowing through the inlet into the filter housing and the fluid flowing through the filter element exits the filter housing through the outlet. Suitably, therefore, the fluid must pass through the filter element before it emerges from the filter housing. Possibilities of the exact arrangement and attachment of the filter element in the filter housing are known in the art.

Der Einlass ermöglicht es, dass das Fluid in das Filtergehäuse eintreten und das Filterelement durchströmen kann, wohingegen der Auslass es gestattet, dass das filtrierte Fluid das Filtergehäuse wieder verlassen kann. Bevorzugt weist das Filtergehäuse je einen Ein- und einen Auslass auf. Es sind jedoch mehrere Ein- und/oder Auslässe denkbar. The inlet allows the fluid to enter the filter housing and flow through the filter element, whereas the outlet allows the filtered fluid to exit the filter housing. Preferably, the filter housing each have an inlet and an outlet. However, there are several inputs and / or outlets conceivable.

In einer bevorzugten Ausführungsform ist der Einlass am geodätisch unteren Bereich und/oder der Auslass am geodätisch oberen Bereich des Filtergehäuses angebracht. Unter der Wortgruppe„geodätisch unterer Bereich" ist erfindungsgemäß der Bereich des Filtergehäuses zu verstehen, der vom Untergrund bzw. Boden den kleinesten vertikalen Abstand aufweist. Entsprechend ist der„geodätisch obere Bereich" der Bereich mit dem größten vertikalen Abstand vom selben Untergrund bzw. Boden. In a preferred embodiment, the inlet is attached to the geodetically lower region and / or the outlet is attached to the geodetic upper region of the filter housing. According to the invention, the term "geodesic lower area" is understood to mean the area of the filter housing which has the smallest vertical distance from the ground or ground. Accordingly, the "geodetically upper area" is the area with the greatest vertical distance from the same ground ,

Insbesondere wird dabei Bezug genommen auf die Position des Filtergehäuses zur Zeit der Filtration, wobei das Filtergehäuse üblicherweise ohnehin an einer festen Position angeordnet ist. In particular, reference is made to the position of the filter housing at the time of filtration, wherein the filter housing is usually already arranged at a fixed position.

Mit diesen Definitionen ist somit der vertikale Abstand vom Untergrund und nicht etwa der Abstand entlang der Längsachse des Filtergehäuses maßgebend. Das ist in den Fällen entscheidend, in denen sich die Längsachse nicht mit der Vertikalen deckt. Das ist beispielsweise der Fall, wenn ein Filtergehäuse schräg oder horizontal eingeschraubt oder aufgestellt ist. Da sich Luft in der Regel im höchsten Bereich eines Gehäuses ansammelt, muss der vertikale Abstand vom Untergrund in Betracht gezogen werden. With these definitions, therefore, the vertical distance from the ground and not about the distance along the longitudinal axis of the filter housing is authoritative. This is crucial in cases where the longitudinal axis does not coincide with the vertical. This is the case, for example, when a filter housing is screwed in or placed obliquely or horizontally. Since air usually accumulates in the highest part of a housing, the vertical distance from the ground must be considered.

Unter„Bereich" im Ausdruck„geodätisch oberer Bereich" bzw. „geodätisch unterer Bereich" ist etwa ein Zehntel der Länge von der geodätisch tiefste bis zur geodätisch höchsten Stelle des Filtergehäuses zu verstehen. "Area" in the term "geodesic upper area" or "geodesic lower area" is to be understood as about one tenth of the length from the geodetically lowest to the geodetically highest point of the filter housing.

Besonders bevorzugt ist der Einlass an der Unterseite und der Auslass an der Oberseite des Filtergehäuses angebracht. Denkbar sind aber auch seitliche Anbringungen. Vorstellbar, jedoch nicht bevorzugt, ist ebenso das Anbringen des Einlasses an einem anderen als den geodätisch unteren Bereich des Filtergehäuses. More preferably, the inlet is attached to the bottom and the outlet is attached to the top of the filter housing. Also conceivable are lateral attachments. However, it is conceivable, but not preferred, to attach the inlet to any other than the geodetic lower portion of the filter housing.

In einer besonders bevorzugten Ausführungsform ist der Auslass an der geodätisch höchsten Stelle des Filtergehäuses angebracht. Es können auch mehrere Stellen für die geodätisch höchste Stelle in Frage kommen. Dies ist insbesondere dann der Fall, wenn die Oberseite des Filtergehäuses in einer horizontalen Ebene liegt. Vorteilhafterweise ist die geodätisch höchste Stelle zentral an der Oberseite angeordnet. Entsprechendes gilt für die geodätisch tiefste Stelle des Filtergehäuses: Diese ist vorteilhafterweise zentral an der Unterseite des Filtergehäuses angeordnet. In a particularly preferred embodiment, the outlet is attached to the geodetically highest point of the filter housing. It can also be several sites for the geodesic highest point in question. This is particularly the case when the top of the filter housing is in a horizontal plane. Advantageously, the geodetically highest point is arranged centrally on the upper side. The same applies to the geodetically lowest point of the filter housing: this is advantageously arranged centrally on the underside of the filter housing.

Dadurch wird gewährleistet, dass Luft oder andere unerwünschte Gase mit der Flu- idströmung aus dem Filtergehäuse ausgespült werden. Idealerweise gibt es somit keine Bereiche im Filtergehäuse mehr, in denen Luft eingeschlossen werden kann. Entlüftungsvorrichtungen wie Ventile sowie deren Bedienung und Ansteuerung können somit wegfallen. Dadurch entfällt ebenfalls die Prozessunterbrechung für Entlüftungsvorgänge, was wiederum zu einer wirtschaftlicheren Produktionszeit führt. Durch den Verzicht zusätzlicher Systemkomponenten wie Entlüftungsventile und Entlüftungslei- tungen wird zudem eine platzsparende Bauweise ermöglicht. Es hat sich zudem gezeigt, dass Entlüftungskomponenten wie Ventile bei bestimmten Produktionsbedingungen fehleranfällig sind, was sich nachteilig auf das Filtrat, den Prozess und die Anlagen auswirken kann. Selbst bei aufwändigen Wartungsarbeiten können Defekte und Ausfälle nicht ausgeschlossen werden. This will ensure that air or other unwanted gases are flushed out of the filter housing with the flow of fluid. Ideally, there are thus no areas in the filter housing in which air can be trapped. Venting devices such as valves and their operation and control can thus be eliminated. This also eliminates the process interruption for venting operations, which in turn leads to a more economical production time. By dispensing with additional system components such as bleeder valves and venting In addition, a space-saving design is made possible. It has also been found that venting components such as valves are susceptible to failure in certain production conditions, which may adversely affect the filtrate, process and equipment. Even with complex maintenance work, defects and failures can not be ruled out.

Insbesondere vorteilhaft wirkt sich die Anbringung des Auslasses an der geodätisch höchsten Stelle des Filtergehäuses aus, wenn auch noch der Einlass an der geodätisch tiefsten Stelle angebracht ist. Idealerweise strömt das Fluid ohne größere Rich- tungsänderung vom Einlass zum Auslass. Größere Luftansammlungen oder -anhaf- tungen etwa im Filterelement, die sich z. B. infolge von Strömungsturbulenzen bilden, können somit verringert oder vermieden werden. Particularly advantageous is the attachment of the outlet at the geodetically highest point of the filter housing affects, although the inlet is still attached to the geodesic lowest point. Ideally, the fluid flows from the inlet to the outlet without major changes in direction. Larger air accumulations or adhesions, for example, in the filter element, which may occur, for example, in the filter element. B. as a result of flow turbulence, can thus be reduced or avoided.

Die Erfindung betrifft ebenfalls ein Filtersystem mit mindestens zwei in Reihe geschal- teten erfindungsgemäßen Filtern. Dabei ist das Filtergehäuse des einen Filters über dem Filtergehäuse des anderen Filters angeordnet. Auf diese Weise kann z. B. ein mehrstufiges Filtersystem geschaffen werden, bei dem etwa der untere Filter als Vorfilter und der obere Filter als Sterilfilter fungieren kann. Unter Reihenschaltung ist erfindungsgemäß gemeint, dass ein aus dem Auslass des unteren Filtergehäuses ausströmendes Fluid danach durch den Einlass des oberen Filtergehäuses in dieses einströmt. Die Filtergehäuse sind daher fluiddurchlässig miteinander verbunden. Besonders bevorzugt ist dabei der Auslass an der geodätisch höchsten Stelle des oberen Filtergehäuses und der Einlass an der geodätisch tiefsten Stelle des unteren Filtergehäuses angebracht. The invention likewise relates to a filter system with at least two filters connected in series according to the invention. In this case, the filter housing of the one filter is arranged above the filter housing of the other filter. In this way, z. B. a multi-stage filter system are created in which about the lower filter can act as a pre-filter and the upper filter as a sterile filter. By series connection according to the invention is meant that a fluid flowing out of the outlet of the lower filter housing then flows into the latter through the inlet of the upper filter housing. The filter housings are therefore fluid-permeable connected to each other. Particularly preferably, the outlet is attached to the geodetically highest point of the upper filter housing and the inlet to the geodetically lowest point of the lower filter housing.

In einer bevorzugten Ausführungsform sind die Filtergehäuse des Filtersystems unmittelbar aneinander angeschlossen. Besonders bevorzugt sind dabei Auslass des unteren Filtergehäuses und Einlass des oberen Filtergehäuses an derselben Stelle. So kommt beispielsweise eine Flanschverbindung oder eine einfache Steckverbindung inIn a preferred embodiment, the filter housings of the filter system are connected directly to one another. Particularly preferred are the outlet of the lower filter housing and the inlet of the upper filter housing at the same location. For example, a flange connection or a simple plug-in connection comes in

Frage. Zweckmäßigerweise ist der Anschluss fluiddicht, lässt also kein Fluid an der Anschlussstelle entweichen. Geeignete Dichtungselemente wie z. B. O-Ringe können hierbei zum Einsatz kommen. Alternativ ist es auch möglich, dass die Filtergehäuse mittelbar über ein Zwischenteil miteinander verbunden sind. Hierbei kann es sich z. B. um einen Adapter oder eine Rohrleitung handeln. Question. Appropriately, the connection is fluid-tight, so no fluid can escape at the junction. Suitable sealing elements such. B. O-rings can be used here. Alternatively, it is also possible that the filter housings are indirectly connected to each other via an intermediate part. This may be z. B. act an adapter or a pipe.

Vorteilhafterweise weist der von dem Fluid durchströmte Innenraum des Anschlussoder Übergangsbereichs zwischen unterem und oberem Filtergehäuse keine oder zumindest kaum Stellen auf, die von der Fluidströmung nicht erfasst werden, wie bei- spielsweise „tote Ecken". Dadurch wird vermieden, dass sich Luft im Filtersystem ansammelt und dort verbleibt. Dies kann beispielsweise durch Vermeidung von Hinter- schneidungen erreicht werden. Advantageously, the interior of the connection or transition area between the lower and upper filter housings, through which the fluid flows, has no or at least scarcely any points which are not detected by the fluid flow, as shown in FIG. For example, "dead corners." This prevents air from accumulating and remaining in the filter system, for example, by avoiding undercutting.

Die Anschlussstellen zwischen oberem und unterem Filter sind besonders bevorzugt modular ausgebildet, d. h., sie sind aufeinander abgestimmt und ermöglichen einen schnellen sowie unkomplizierten Zusammenbau. Dadurch kann auf einfachste Weise ein Filtersystem mit beliebig vielen Filterstufen aufgebaut werden. The connection points between the upper and lower filters are particularly preferably modular, d. h., They are coordinated and allow a quick and easy assembly. As a result, a filter system with any number of filter stages can be constructed in the simplest way.

In einer bevorzugten Ausführungsform weist das unterste Filtergehäuse einen am geodätisch unteren Bereich angebrachten Kondensatabieiter auf. In a preferred embodiment, the lowermost filter housing has a condensate drain attached to the geodetic lower region.

Bei vielen Prozessen lassen sich unerwünschte Kondensate nicht vermeiden und müssen aus dem System abgeleitet werden. Andernfalls führen sie dazu, dass die Funktion von Filterelementen beeinträchtigt wird und Prozesskomponenten, insbesondere Ventile beschädigt werden. Viele Filter kommen ohne Kondensatabieiter nicht aus. In many processes, unwanted condensates can not be avoided and must be derived from the system. Otherwise, they will impair the function of filter elements and damage process components, especially valves. Many filters do not work without condensate drainage.

Es wurde erkannt, dass es in dem erfindungsgemäßen Filtersystem ausreicht, lediglich einen Kondensatabieiter am geodätisch unteren Bereich des untersten Filtergehäuses anzubringen. Insbesondere bevorzugt ist die Anbringung an der geodätisch tiefsten Stelle oder in der Nähe zu dem an der geodätisch tiefsten Stelle angebrachten Einlass. Durch die fluiddurchlässige Verbindung der übereinander, insbesondere vertikal, angeordneten Filtergehäuse und der Wirkung der Schwerkraft sammeln sich die Kondensate des gesamten Filtersystems im geodätisch unteren Bereich des untersten Filtergehäuses an. Dadurch können zusätzliche Kondensatabieiter eingespart werden. Vorteilhafterweise weist das Filtergehäuse einen insbesondere rohrförmigen Ansatz für den Anschluss des Kondensatabieiters auf. It was recognized that it is sufficient in the filter system according to the invention to attach only one Kondensatabieiter geodetically lower portion of the bottom filter housing. Most preferably, the attachment is at the geodesic lowest point or in the vicinity of the inlet attached to the geodesic lowest point. Due to the fluid-permeable connection of the superimposed, in particular vertical, arranged filter housing and the effect of gravity, the condensates of the entire filter system accumulate in the geodesic lower region of the bottom filter housing. This can be saved additional Kondensatabieiter. Advantageously, the filter housing on a particular tubular approach for the connection of Kondensatabieiters.

Der erfindungsgemäße Filter bzw. das erfindungsgemäße Filtersystem eignet sich hervorragend für die Filtration von Fluiden in der chemischen, pharmazeutischen oder Lebensmittelindustrie sowie für Fluide im Maschinenbau, der Automobilindustrie, in biologischen Prozessen, Biorektoren und im Bereich der Umwelttechnologie. Dies stellt jedoch keine Beschränkung dar; vielmehr kommen grundsätzlich alle Anwendungsgebiete der Fluidfiltration in Betracht. The filter according to the invention or the filter system according to the invention is outstandingly suitable for the filtration of fluids in the chemical, pharmaceutical or food industry and for fluids in mechanical engineering, the automotive industry, in biological processes, biorectors and in the field of environmental technology. However, this is not a limitation; Rather, basically all application areas of fluid filtration come into consideration.

Als Fluide kommen beispielsweise Getränke wie Milch, Säfte oder Softdrinks, Pharma- produkte und Arzneimittel, Farbdispersionen, Motoröle und viele mehr in Frage. Examples of fluids are drinks such as milk, juices or soft drinks, pharmaceutical products and pharmaceuticals, color dispersions, motor oils and many more.

Der erfindungsgemäße Filter bzw. das erfindungsgemäße Filtersystem kann für die verschiedensten Filtrationszwecke wie z. B. der Vorfiltration, Sterilfiltration, Dampffiltration, Feinfiltration und viele mehr eingesetzt werden. Die Erfindung wird nachfolgend anhand der folgenden Zeichnung, die lediglich eine vorteilhafte Ausführungsform der Erfindung zeigt, näher erläutert. Darin zeigt: The filter according to the invention or the filter system according to the invention can be used for a variety of filtration purposes such. As the prefiltration, sterile filtration, steam filtration, fine filtration and many more. The invention will be explained in more detail with reference to the following drawing, which shows only an advantageous embodiment of the invention. It shows:

Fig. 1 eine Schnittansicht eines beispielhaften Filtersystems mit zwei in Reihe geschalteten Filtern. Fig. 1 is a sectional view of an exemplary filter system with two filters connected in series.

Figur 1 zeigt eine Schnittansicht eines Filtersystems 1 , das aus zwei in Reihe geschalteten Filtern 2 und 3 besteht. Der Schnitt verläuft dabei entlang der Längsachse des Filtersystems 1. Figure 1 shows a sectional view of a filter system 1, which consists of two filters 2 and 3 connected in series. The section runs along the longitudinal axis of the filter system. 1

Der obere Filter 2 weist ein Filtergehäuse 2.1 und ein Filterelement 2.2 auf, welches im Filtergehäuse 2 angeordnet ist. Das Filterelement 2.2 ist ein hohlzylindrischer Filtereinsatz und übersichtlichkeitshalber schematisch durch ein Rechteck dargestellt. Das Filtergehäuse 2.1 weist ferner einen Einlass 2.3 und einen Ausiass 2.4 auf. Der Einlass 2.3 befindet sich dabei an der geodätisch tiefsten Stelle des Filtergehäuses 2. Der Ausiass 2.4 ist an der geodätisch höchsten Stelle des Filtergehäuses 2.1 angebracht. The upper filter 2 has a filter housing 2.1 and a filter element 2.2, which is arranged in the filter housing 2. The filter element 2.2 is a hollow cylindrical filter insert and for clarity sake shown schematically by a rectangle. The filter housing 2.1 also has an inlet 2.3 and a Ausiass 2.4. The inlet 2.3 is located at the geodetically lowest point of the filter housing 2. The Ausiass 2.4 is attached to the geodetically highest point of the filter housing 2.1.

Entsprechend weist auch der untere Filter 3 ein Filtergehäuse 3.1 , ein Filterelement 3.2 sowie einen Einlass 3.3 und Ausiass 3.4 auf. Auch hier befindet sich der Einlass 3.3 an der geodätisch tiefsten Stelle und der Ausiass 3.4 an der geodätisch höchsten Stelle. Zusätzlich weist das Filtergehäuse 3.1 des unteren Filters 3 einen rohrförmigen Ansatz 3.5 als Anschlussstelle für einen Kondensatabieiter (nicht dargestellt) auf, der in der Nähe des Einlasses 3.3 angebracht ist. Accordingly, the lower filter 3 has a filter housing 3.1, a filter element 3.2 and an inlet 3.3 and Ausiass 3.4. Again, the inlet 3.3 is located at the geodesic lowest point and the Ausiass 3.4 at the geodetically highest point. In addition, the filter housing 3.1 of the lower filter 3 has a tubular extension 3.5 as a connection point for a Kondensatabieiter (not shown), which is mounted in the vicinity of the inlet 3.3.

An dem Einlass 3.3 des unteren Filtergehäuses 3.1 ist ein Rohr 4 angeschlossen. Am Ausiass 2.4 des oberen Filtergehäuses 2.1 ist ebenfalls ein Rohr 5 angeschlossen. At the inlet 3.3 of the lower filter housing 3.1, a pipe 4 is connected. At Ausiass 2.4 of the upper filter housing 2.1 a pipe 5 is also connected.

Durch das untere Rohr 4 wird dem Filtersystem ein zu filterndes Fluid zugeführt. Dies wird durch den unteren Federpfeil angedeutet. Das Fluid tritt über den Einlass 3.3 in das untere Filtergehäuse 3.1 ein und durchströmt dann das Filterelement 3.2. Hierbei wird das Fluid vorgefiltert und tritt danach durch den Ausiass 3.4 des unteren Filtergehäuses 3.1 , der sich an derselben Stelle befindet wie der Einlass 2.3 des oberen Filtergehäuses 2.1 , aus dem unteren Filtergehäuse 3.1 aus und in das obere Filtergehäuse 2.1 ein. Sodann durchströmt das vorgefilterte Fluid das Filterelement 2.2. Hierbei kann es sich um eine Sterilfiltration handeln. Letztlich verlässt das sterilgefilterte Fluid das Filtersystem 1 über den Ausiass 2.4 des oberen Filtergehäuses 2.1 und wird über das Rohr 5 zum nächsten Prozessabschnitt geführt. Dies wird durch den oberen Federpfeil angedeutet. Through the lower tube 4, a filter to be filtered fluid is supplied to the filter system. This is indicated by the lower spring arrow. The fluid enters via the inlet 3.3 in the lower filter housing 3.1 and then flows through the filter element 3.2. Here, the fluid is pre-filtered and then passes through the Ausiass 3.4 of the lower filter housing 3.1, which is located at the same point as the inlet 2.3 of the upper filter housing 2.1, from the lower filter housing 3.1 and in the upper filter housing 2.1 a. Then the prefiltered fluid flows through the filter element 2.2. This can be a sterile filtration. Finally, the sterile-filtered fluid leaves the filter system 1 via the outlet 2.4 of the upper filter housing 2.1 and is guided via the tube 5 to the next process section. This is indicated by the upper spring arrow.

Claims

Patentansprüche: claims: 1. Filter (2) zur Filtration eines Fluids mit einem Filtergehäuse (2.1), das einen Ein- (2.3) und Auslass (2.4) aufweist und einem im Filtergehäuse (2.1) derart angeordneten Filterelement (2.2), dass das Filterelement (2.2) von dem durch den Einlass (2.3) in das Filtergehäuse (2.1 ) eintretenden Fluid durchströmt wird und das das Filterelement (2.2) durchströmthabende Fluid durch den Auslass (2.4) aus dem Filtergehäuse (2.1) austritt, dadurch gekennzeichnet, dass der Einlass (2.3) unterhalb des Auslasses (2.4) angeordnet ist. 1. filter (2) for filtering a fluid with a filter housing (2.1) having an inlet (2.3) and outlet (2.4) and a filter housing (2.1) arranged in such a filter element (2.2) that the filter element (2.2) from which the fluid entering through the inlet (2.3) flows through the filter housing (2.1) and the fluid flowing through the filter element (2.2) exits the filter housing (2.1) through the outlet (2.4), characterized in that the inlet (2.3) is arranged below the outlet (2.4). 2. Filter (2) nach Anspruch 1 , dadurch gekennzeichnet, dass der Einlass (2.3) an der tiefsten Stelle und/oder der Auslass (2.4) an der höchsten Stelle des Filtergehäuses (2.1 ) angebracht ist. 2. Filter (2) according to claim 1, characterized in that the inlet (2.3) at the lowest point and / or the outlet (2.4) at the highest point of the filter housing (2.1) is mounted. 3. Filtersystem (1) aufweisend mindestens zwei in Reihe geschaltete Filter (2, 3) gemäß der Ansprüche 1 und 2, wobei das eine Filtergehäuse (2.1) oberhalb des anderen Filtergehäuses (3.1) angeordnet ist. 3. Filter system (1) comprising at least two filters in series (2, 3) according to claims 1 and 2, wherein the one filter housing (2.1) above the other filter housing (3.1) is arranged. 4. Filtersystem (1) nach Anspruch 3, dadurch gekennzeichnet, dass die Filtergehäuse (2, 3) unmittelbar aneinander angeschlossen sind oder über ein Zwischenteil miteinander verbunden sind. 4. Filter system (1) according to claim 3, characterized in that the filter housing (2, 3) are connected directly to each other or are connected to each other via an intermediate part. 5. Filtersystem (1) nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das unterste Filtergehäuse (3.1) einen in seinem unteren Bereich angebrachten Kon- densatableiter aufweist. 5. Filter system (1) according to claim 3 or 4, characterized in that the lowermost filter housing (3.1) has a mounted in its lower region condensate drain.
PCT/EP2016/000288 2015-03-09 2016-02-19 Filter and filter system Ceased WO2016142031A1 (en)

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Cited By (1)

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CN106422472A (en) * 2016-11-22 2017-02-22 镇江市和云工业废水处置有限公司 Efficient curve-type water purifying device

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WO2005110575A1 (en) * 2004-04-15 2005-11-24 Pall Corporation Fluid treatment arrangements and methods for operating fluid treatment arrangements
WO2006101364A1 (en) * 2005-03-24 2006-09-28 Picogram Co., Ltd Water purification filter easily replaced using a connector, and a water purification system using the same
EP2407225A1 (en) * 2010-07-14 2012-01-18 Balvinder Singh Nagi Fluid filter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040035777A1 (en) * 2000-03-01 2004-02-26 Ralph Stankowski Disposable fluid separation device and manifold assembly design with easy change-out feature
WO2005110575A1 (en) * 2004-04-15 2005-11-24 Pall Corporation Fluid treatment arrangements and methods for operating fluid treatment arrangements
WO2006101364A1 (en) * 2005-03-24 2006-09-28 Picogram Co., Ltd Water purification filter easily replaced using a connector, and a water purification system using the same
EP2407225A1 (en) * 2010-07-14 2012-01-18 Balvinder Singh Nagi Fluid filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106422472A (en) * 2016-11-22 2017-02-22 镇江市和云工业废水处置有限公司 Efficient curve-type water purifying device

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