• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:SE1150054A1
    申请号:SE1150054
    申请日:2011-01-26
    公开日:2012-07-27
    发明作者:Carl Tengstedt
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    1015202530failure of the main filter. At the bottom of the casing surrounding the filter paper isvalves are provided and the warning system gives a signal when the oil is carried out throughthe valve in case of damage to the filter paper.
    There are sensors for sensing excessive pressures and temperatures in oil filtersas described in, for example, CN 101526020. These sensors do not detectoil filter breakdowns.
    It is also known with systems that detect if the oil filter medium is cloggedand then releases the oil via a bypass valve. There are also systems likewarns if the oil passes through the bypass valve as it indicates that the filter iscongested.
    The invention is intended to solve problems in detecting oil filter breakdowns.
    SUMMARY OF THE INVENTIONThe present invention relates to an oil filter element, comprising onefilter medium with at least one sensor in the form of an electrical conductor, whereinrupture of said filter medium is intended to be sensed bysensing means.
    The invention also relates to an oil filter unit comprising an oil filter elementand a filter housing enclosing the oil filter element.
    In addition, the invention relates to a vehicle comprising at least oneoil filter element or an oil filter unit.
    The present invention also relates to a method for detectingfilter medium failure of an oil filter element as above, comprising the stepstomeasuring the resistance of the conductor with a sensing means,evaluate whether the resistance exceeds a predetermined value RO,1015202530indicate when the resistance exceeds the predetermined value RO so that aindication is obtained that a filter medium failure has occurred.
    The invention will be described in the following with reference to figuresas below.
    DESCRIPTION OF FIGURESFigure 1 shows an oil filter element in perspective view according to the invention.
    Figure 2 shows a cross section of a part of an oil filter element according to the invention.
    Figure 3 shows a sheet of filter medium material before it is formed into oneoil filter element.
    Figure 4 shows a vehicle comprising an oil filter element.
    Figure 5 shows a block diagram of a method according to the invention.
    DETAILED DESCRIPTIONThe invention relates to an oil filter element comprising a filter medium withat least one sensor in the form of an electrical conductor to detect ifthe oil filter element breaks. An oil filter element 1 can be seen in Figure 1.
    The oil filter element 1 comprises a filter medium 2 with at least one sensor inin the form of at least one electrical conductor 4, the bursting of saidfilter medium 2 is intended to be sensed by means of sensing means 5.
    The sensing means 5 then gives a signal and the driver of the vehicle can make sure that the filteris replaced.
    The oil filter element 1 is provided with said conductor 4 so that the conductor breaksthe filter medium 2 bursts. The sensing means 5 then senses that said conductor 4burst.
    Said conductor 4 is connected via known contact devices (not shown) andsignal cables 7 to the sensing means 5. When the vehicle is running, oil is pumped around in1015202530the motor or when measurement is desired, a current will be passed through itelectrical conductor 4 to be able to measure the resistance through said conductor 4with appropriate technology and equipment. It is also important to put a strain on itthe conductor to be able to measure the resistance. Figure 1 shows a lid 12 which canbe arranged in the top of the oil filter element 1.
    The conductor 4 has contacts at its ends and these contacts are connected tosignal cables 7 going to the sensing means 5. The sensing means 5 may beconnected to a signal system where an indicator 11 in the form of, for example, a lamp lights up5 indicates that 2 have broken.
    The sensing means 5 may be in the form of a control system. The sensing means 5when the sensing means the filter mediumis arranged for sensing the resistance of said conductor 4. Ifthe oil filter element 1 breaks and said conductor 4 failsthe resistance to become infinite which will be detected withthe sensing means 5. By the expression that the resistance becomes infinite is meant thatthe resistance increases, as the resistance increases from a previous value then the conductorconducts power. The sensing means 5 then communicates the result towarn the driver.
    The filter medium 2 may comprise cellulose fibers and / or synthetic fibers.
    Cellulose fibers can originate from wood, cotton or other plants.orcellulose fibers and synthetic fibers. The synthetic fibers can be, for exampleThe filter medium may comprise synthetic fibers, a mixture ofpolymer fibers, glass fibers or carbon fibers. Usually the fibers are bonded togetherwith a phenolic resin. Cellulose fibers are sensitive to high temperatures andaggressive oil. Oils used in engines can absorb combustion residues, e.g.eg sulfuric acid, which can make the oil acidic and corrosive. To prevent the oilbecomes acidic contains the various additives that act as a buffer. With timethe additives are consumed and the buffering effect then decreases, resulting inthat the oil becomes acidic and corrosive. The fibers can become brittle and thus becomethe filter medium brittle if exposed to high temperature or aggressive oil belowa time. If the filter medium becomes brittle, there is a risk that the filter medium will rupture.1015202530Filter failure can also occur if the filter medium becomes clogged and it becomes too highpress the filter media.
    The conductor 4 can be arranged in the filter medium 2 or on the filter medium 2. Whenthe conductor is arranged in the filter medium, the conductor in the filter medium is arranged atpreparation of the filter medium. When arranging the conductor on the filter medium canthe conductor, for example, is glued to the filter medium.
    The oil filter element 1 may have a cylindrical configuration, as shown in Figure 1.
    An arrow Z shows the axial direction Z of the cylinder and an arrow Y shows a directionperpendicular to the axial direction Z of the cylinder, and an arrow X shows a directionperpendicular to the axial direction of the cylinder.
    The filter medium 2 can burst in several different ways and in different directions and therefore shouldthe conductor be arranged so that it breaks when the filter medium 2 breaks regardless of iwhich direction the filter medium is missing. The conductor 4 can then be arranged in several different waysway.
    The conductor 24 is arranged in or on the filter medium 22 and preferably hascontact with the material constituting the filter medium 22 which has a cylindricalform. Figure 2 shows a section of a part of an oil filter element. The leader orthe conductors are arranged in or on the filter medium 22 and extend in a helical shapeor as part of a helical shape in the cylindrical oil filter element.
    The filter medium 22 may be provided with at least one conductor 24 oriented in onedirection with the angle oi in relation to the axial direction of the cylinder Z. The angle oican be between 0 and 90 °. If there are several leaders, they can be separateconnected to coupling elements that can be connected to sensing means todetect if the conductor 24 or the conductors are missing. Leaders can also beinterconnected and form part of one and the same circuit and beingconnectable via electrical connectors and then via signal cables to onesensing means.1015202530Furthermore, the filter medium 22 may be provided with a further conductor 29 orientedin a direction ß in relation to the axial direction of the cylinder Z. The angle ß can bebetween 0 and 90 °. The conductor 29 can propagate in a helical shape or part of onehelix shape in or on the filter medium 22 in a manner similar to that of the conductor 24sig.
    The sensors will be able to feel stretch marks in different directionsthe filter medium if the angles oi and ß are not equal. It should be at least about 20 to 30 ° apartbetween the angles oi and ß so that they can feel stretch marks in different directions. lIn one embodiment, for example, the angle d may be 0 ° and the angle ß may be 90 °.
    The filter medium 22 may be provided with several substantially parallel conductors 24oriented with the angle oi in the axial direction Z of the cylinder and several substantiallyparallel conductors 29 oriented in a direction ß relative to the cylinderaxial direction Z. The conductors should extend in the vicinity or adjacent to each otherto detect if the oil filter element 22 is defective. This precludes the filterfails without the conductors failing which results in a signal of filter failureabsent.
    Oil filter element 1 according to the invention may comprise a pleated filter mediumwhere folds 8 are arranged in the axial direction Z of the cylinder. Figure 1 shows outer folds8 which runs parallel to the axis direction Z of the cylinder. Inner folds 9 are visiblethrough an upper opening 10 in the oil filter element 1. This is a common onedesign of oil filter elements when the surface that can filter the oil becomes large.
    If the oil filter element comprises a pleated filter medium where the folds 8, 9 arearranged in the axial direction Z of the cylinder, at least one conductor can bearranged with orientation in the axial direction of the cylinder in a fold. Ie the leaderor the conductors are arranged at an angle oi which is 0 °. To feelfilter media failures, conductors are needed in approximately every other fold. It can tooit is conceivable that conductors are arranged with one conductor located in each fold, but onebalancing can be done in terms of the cost of producing1015202530the oil filter element. Leaders can also be arranged less often in the folds thanevery other fold. In addition, the filter medium may have at least one conductor providedat an angle ß relative to the axial direction Z of the cylinder.
    The conductors can be arranged in the inner folds or the outer folds or both.
    The conductor can also be oriented in the axial direction Z of the cylinder in the filter mediumbetween two folds.
    The oil filter element 1 comprises a filter medium 2, 22 which may consist of onerectangular filter medium sheet 30, see Figure 3, before it has been formed into acylindrical configuration. The two short sides 31, 32 are then joined toforming the cylindrical configuration of the oil filter medium 2, 22. The conductorarranged in or on this filter medium sheet 30. The conductor can be integrated inthe filter medium when it is produced. It can also be arranged on the filter and e.g.glued to the oil filter element. It is important to arrange the leader or leaders onthe oil filter element before it is joined to the cylindrical onethe configuration. The direction of the short side will be parallel to that of the cylinderaxial direction Z.
    The filter medium may be provided with at least one conductor oriented inzigzag pattern. To illustrate how the conductor can be arranged is shown inFigure 3 shows a filter medium sheet 30 with a conductor 34 arranged in a zigzag shape therethe conductor extends from one short side to the other short side. The leader34 extends back and forth between the long sides of itrectangular filter media sheet 30. The zigzag shape can extend intoany direction of the sheet and the cylindrical oil filter element.
    Conductors can also be arranged in a zigzag pattern where the conductors leave itone long side to the other long side. These leaders can individually beconnected to sensing means via electrical contacts, or the conductors may beinterconnected and form part of one and the same circuit and beingconnectable via electrical contacts to a sensing means. The connectionsalready ascan go to existing electrical systems that operate1015202530sensing means. When the conductor is arranged zigzag, stretch marks come inseveral different directions of the filter medium to be felt.
    As mentioned above, the filter medium may be provided with at least one conductororiented in a direction with the angle oi relative to the axial of the cylinderdirection Z. In addition, the filter medium may be provided with a conductor inzigzag pattern. The two conductors can be connected to each other so that theyconstitutes the same circuit. Furthermore, several conductors with the angle oi can beconnected by several conductors in a zigzag pattern. Every other leader canbe a leader with the angle oi and every other leader can be a leader withzigzag pattern. In addition, the oil filter element may be provided with aconductor with the angle ß in relation to the axial direction Z of the cylinder.
    The conductor may, for example, be in the form of a wire or the conductor may be in the form ofa rolled material like a thin foil. The thin and elongated foilplaced like a thread in or on the filter media.
    The conductor material must be able to conduct current and can be selected from metals, conductivepolymers and conductive adhesives. The metal can be aluminum, silver, iron, gold,copper or alloys thereof. In addition, a rolled metal material canbe used, eg rolled material of aluminum, silver, iron, gold copper oralloys thereof. Among conductive polymers, polyaniline, or PEDOT-PPS,ie poly (3,4-ethylenedioxytiophene) poly (styrene sulfonate), used inthe conductor material. Conductive adhesives can also be used. Conductive adhesive containsoften fillers that are conductive, such as silver (Ag), gold (Au), copper (Cu),Palladium / Silver (Pd / Ag), carbon or graphite. An example of conductive adhesive can e.g.be epoxy glue containing silver.
    The conductor material is so provided that it breaks when the oil filter element breaks.
    It has, for example, a brittleness, toughness and dimension that is adapted so that itgoes off when the oil filter element breaks.1015202530The material used should be quite resistant to aggressive oil so thatthe wire is not affected too much by the oil.
    If the conductor is a wire, it can have a diameter of about 0.1 mm.
    The diameter can be in a range of 0.02 and 2.0 mm. The thickness ofthe leader affects the leader's ability to resign, which ability is also affectedof which material the conductor is made of. If the leader is not a thread and mancan not measure a diameter, the cross-sectional area can be about 0.008 mmz.
    The cross-sectional area can be in a range of 0.0003 and 4.0 mmz. The length ofthe leader can vary greatly. This may, for example, be due to the use of several conductorsor a conductor through the entire filter medium.
    The oil filter element 1 can be of the input filter element type. The oil filter element1 is then placed in a filter housing 6. When the oil filter element 1 has broken, it is replacedit out and you insert a new oil filter element 1 in the filter housing 6. Oneinsert filter is thus an oil filter element where the oil filter element is inserted as oneinsert in a filter housing.
    The invention also relates to an oil filter unit 13, wherein it comprises oneoil filter element 1 according to the invention and a filter housing 6 which enclosesthen thatoil filter element failure, which is an advantage when using this type ofthe oil filter element. The entire oil filter unit can be replaced atoil filter. The oil filter unit 13 can be removed during replacement and thereaftera new oil filter unit is installed on site. The oil filter element 1 which is included inthe oil filter unit 13 are designed according to the invention.
    The conductor 4 is connected via electrical contacts and signal cables 7 to onesensing means 5. Contact must be made between the oil filter elementconductor 4 and contacting device which is then in turn connected toelectricThe contacting device may consist of spring-loaded contact plates such assignal cables 7 connected to the sensing means 5.mechanically pressed against the oil filter element. The conductor of the oil filter element is101520253010connected to contact plates, or the conductor is placed in a larger quantity therethe contacting must take place. A part of the filter housing 6 is shown in Figure 1 with a dashed lineline. The filter housing 6 will enclose the entire oil filter element 1. Ifthe oil filter element 1 is of the screw-on oil filter type with integrated filter housing6, the conductor 4 is arranged so that there is contact also to the filter housing 6 as thenis connected to the sensing means 5 when fitting an oil filter in the vehicle. Ifthe oil filter element 1 is of the input filter type, the conductor 4 or the conductors mustis connected to the filter housing 6 when mounting the oil filter element. These connectionsarranged in a conventional manner and manner described above.
    The filter housing 6 has both inlet and outlet for the oil, but these are not shown inthe figure.
    The present invention also relates to a vehicle 40 comprising at leastan oil filter element 41 according to the invention or an oil filter unit according tothe invention. A vehicle 40 is shown in Figure 4. The oil filter element 41 may bearranged on or near the internal combustion engine or on another suitableseat in the vehicle 40.
    Furthermore, the invention relates to a method, shown in Figure 5, fordetecting filter medium failure of an oil filter element as described above,including the steps of measuring the resistance of the conductor with asensing means s110, and evaluate whether the resistance exceeds onepredetermined value RO s120, indicate when the resistance exceeds itpredetermined value RO so that an indication is obtained that a filter medium failurehas occurred s130. As mentioned above, the resistance can be measured, for example, bya voltage is applied to the conductor and the current is measured or by a currentled by the leader. The resistance is measured with suitable technology and equipment.
    Figure 5 shows a block diagram of the method according to the invention.
    The method comprises the steps ofmeasuring the resistance of the conductor with a sensing means in step s110,11measure if the resistance is higher than a predetermined value RO in step s120.
    When the resistance is higher than a predetermined value RO, one is indicatedfilter medium failure s130. If the conductor resigns, the resistance will beinfinite and thus be above RO. If, on the other hand, the resistance is not higher than onepredetermined value Ro, the system continues to measure the resistance according to stepss110. The value RO will depend on the material used in the conductor,thickness of the conductor and other properties of the conductor that determine whichvalue required for filter medium failure indication.
    权利要求:
    Claims (13)
    [1]
    10 15 20 25 30 12
    [2]
    PATENT REQUIREMENTS
    [3]
    . Oil filter element (1), characterized in that it comprises a filter medium (2) with at least one sensor in the form of at least one electrical conductor (4), the rupture of said filter medium (2) being intended to be sensed by means of sensing medium (5).
    [4]
    . Oil filter element (1) according to claim 1, characterized in that the filter medium (2) is provided with said conductor (4) so that the conductor (4) breaks if the filter medium (2) breaks. Oil filter element (1) according to claim 2, characterized in that the sensing means (5) are arranged for sensing resistance of said conductor (4).
    [5]
    . Oil filter element (1) according to one of the preceding claims, characterized in that the oil filter element (1) has a cylindrical configuration. Oil filter element (1) according to claim 4, characterized in that the filter medium (22) is provided with at least one conductor (24) oriented in a direction with the angle o 1 in relation to the axial direction (Z) of the cylinder.
    [6]
    . Oil filter element (1) according to claim 5, characterized in that the filter medium (22) is provided with at least one more conductor (29) oriented in a direction ß in relation to the axial direction (Z) of the cylinder.
    [7]
    . Oil filter element (1) according to one of the preceding claims, characterized in that the filter medium (3) is provided with at least one conductor (34) oriented in a zigzag pattern. 10 15 20 25 13
    [8]
    Oil filter element (1) according to any one of the preceding claims, characterized in that said conductor comprises a material selected from metals, conductive polymers and conductive adhesives.
    [9]
    Oil filter element (1) according to one of the preceding claims, characterized in that the filter medium (2, 22) comprises cellulose fibers and / or synthetic fibers.
    [10]
    Oil filter element (1) according to one of the preceding claims, characterized in that the oil filter element (1) is of the input filter element type.
    [11]
    Oil filter unit (13), characterized in that it comprises an oil filter element (1) according to any one of claims 1 to 9 and a filter housing (6) enclosing the oil filter element (1).
    [12]
    Vehicle (40) characterized in that it comprises at least one oil filter element (41) according to any one of claims 1-10 or an oil filter unit according to claim 11.
    [13]
    A method for detecting filter medium failure of an oil filter element (1) according to any one of claims 1-10, comprising the steps of measuring the resistance of the conductor with a sensing means (s110), evaluating whether the resistance exceeds a predetermined value RO (s120), indicating when the resistance exceeds the predetermined value RO so that an indication is obtained that a filter medium failure has occurred (s130).
    类似技术:
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    同族专利:
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    WO2012102662A1|2012-08-02|
    SE535509C2|2012-09-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6221242B1|1996-12-17|2001-04-24|Dei-Tec Corporation|Renewable filter with a bypass valve|
    US7373809B2|2006-09-22|2008-05-20|General Motors Corporation|Method for controlling a filter maintenance indicator|
    KR20080058753A|2006-12-22|2008-06-26|두산인프라코어 주식회사|Oil filter|
    CN101526020A|2009-03-31|2009-09-09|浙江大学|Alarm device of oil filter|US10286342B2|2013-04-17|2019-05-14|OutotecOy|Filter plate, filter disc apparatus, and a method for controlling a disc filter|
    FI20155525A|2015-07-03|2017-01-04|OutotecOy|The filter device|
    FI20155528A|2015-07-03|2017-01-04|OutotecOy|Filter element, disk filter device and method|
    FI20155526A|2015-07-03|2017-01-04|OutotecOy|The filter element|
    DE102016004904A1|2016-04-22|2017-10-26|Audi Ag|Filter element, device for detecting a loading of a filter element and filter device for a vehicle|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1150054A|SE535509C2|2011-01-26|2011-01-26|Device and method for detecting rupture of oil filter medium|SE1150054A| SE535509C2|2011-01-26|2011-01-26|Device and method for detecting rupture of oil filter medium|
    PCT/SE2012/050039| WO2012102662A1|2011-01-26|2012-01-19|Oil filter element|
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