• 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:
    The invention relates to a liquid filter (100), in particular for fuels or urea solution. The liquid filter (100) comprises a housing (200) with a housing longitudinal axis (280) and a filter insert (110) arranged in the housing (200) for separating particles. Thereby, the housing (200) is formed by a first housing element (210) and a second housing element (220) separated therefrom, wherein between the first housing element (210) and the second housing element (220) a sealing element (300) is arranged for fluid-tight sealing of the two housing elements (210, 220) opposite each other. In order to achieve an improved seal and to prevent the seal from being fitted incorrectly, it is then provided that the sealing element (300) has a substantially hexagonal shape in cross section (Figure 1b).
    公开号:SE1651106A1
    申请号:SE1651106
    申请日:2016-08-16
    公开日:2017-02-21
    发明作者:Rey Portero Francisco；Martinez Gomez Miguel
    申请人:Bosch Gmbh Robert；
    IPC主号:
    专利说明:

    Liquid filterField of the inventionThe invention relates to a liquid filterState of the artIn motor vehicles, in particular motor vehicles with internal combustion engines, which are powered by petrol or diesel, liquid filters are often used. Such liquid filters can also serve to separate particles or water from the fuel, in order to prevent damage to the engine. However, due to the ever-increasing requirements for the purification of exhaust gases from internal combustion engines, these are also liquid filters, which are to separate particles from aurea solution, the urea solution serving to purify the exhaust gas.
    According to the state of the art, liquid filters are known, which have a housing consisting of two separate housing elements. In the housing, a filter insert is arranged for separating particles. In order to be able to seal the housing in a fluid-tight manner, a sealing element can be arranged between the twohouse elements.
    Such a liquid filter is known from DE 103 22 555 A1.
    Description of the InventionThe invention is based on the insight that the reliability of a fluid-tight seal of the two-part housing of the liquid filter can be limited by means of a sealing element, in particular in maintenance cases, i.e. when the sealing element must be replaced and the two separatethe house elements are reassembled.
    Traditional O-rings can, for example, be clamped or twisted during transport or handling. In addition, they have only a small contact surface between the two housing elements intended for sealing against each other - this is first expanded by applying pressure and a corresponding reshaping of the O-ring. It may thus be the case that during usedue to too little pressure on the O-ring, the sealing surface is too small and this leads to leaks.
    Other two-part liquid filters with sealing elements, which could deviate from the symmetrical shape of an O-ring, likewise include the risk if its sealing element is distorted, a sealing element outside now constituting a sealing element inside, also thatafter the assembly of the housing, only an insufficient sealing effect is achieved.
    There may therefore be a need to provide a liquid filter, which has a two-part housing and which is cost-effective and simple, reliably fluid-tight, even inmaintenance case, can be sealed by means of a sealing element.
    Advantages of the Invention This need can be met by the article of the present invention according to the independent claims. Advantageous embodiments of the present invention are described independency requirements.
    According to a first aspect of the invention, a liquid filter with a two-part housing is proposed, which compared with the prior art is particularly simple and reliably fluid-tight, in particular inmaintenance case, sealable by means of a sealing element.
    This is achieved in that the liquid filter, in particular for fuels or urea solution, comprises a housing with a housing longitudinal axis and a filter insert arranged in the housing for separating particles. The housing is then formed by a first housing element and a second housing element separated therefrom. Between the first housing element and the second housing element, a sealing element is arranged for fluid-tight sealing of the two housing elements against each other. According to the invention, it is then provided that the sealing element is in cross sectionhas a substantially hexagonal shape.
    According to a second aspect of the invention, a sealing element for a liquid filter is proposed, in particular for a liquid filter formed of two housing elements, wherein the sealing element incross section has a substantially hexagonal shape.
    In other words, the sealing element is not designed with a round or rectangular cross-section.
    Thereby obtained in an advantageous manner compared to such sealing elements having oneround or rectangular cross-section even with little effort a significantly extended contact surface between the facing housing elements and the sealing element, so that the liquid filter is fluid tight sealable with little power consumption. Advantageously, the material strength of the housing is thereby reduced, as during assembly the same pressure of the housing elements against each other does not have to be used as with a round cross-section, rectangular or elliptical sealant. Furthermore, flat surfaces can also be advantageously used as contact surfaces on the housing at the location of the sealing seat, since a sufficient sealing surface is provided through the flat surfaces of the sealing element (hexagonal shape). Wide traditional sealing elements with a round cross-section, it may be necessary to also provide a curved surface at the location of the sealing element, in order to provide a sufficientsealing surface.
    Furthermore, a sealing element with a hexagonal shape in cross section is considerably better protected against a twist or a twist during handling or transport, as the hexagonal shape has a higher rigidity against rotation than, for example, a sealing element with a round, elliptical, rectangular or asymmetrical cross section. This advantageously reduces the risk of incorrect installation and incorrect installation of the sealing element in the liquid filter and thus reduces the risk ofthe liquid filter becomes leaky.
    A sealing element with a hexagonal shape in cross section also has a higher moment of inertia than, for example, a cross section with a round or elliptical cross section or a medrectangular cross section. Thereby, a higher is advantageously achievedform elasticity, whereby the sealing ratio can be improved.
    Furthermore, due to the hexagonal shape of the sealing element in the cross section, it is particularly easy and reliable to purposefully redirect a pressure of action along the housing longitudinal axis, with which the two housing elements are clamped against each other, in a radial or lateral direction. This advantageously reduces the compression ofthe sealing element exclusively along the longitudinal direction, as the sealing element can alsodeformed in radial direction. At the same time, a side seal is also advantageously made possible by means of the sealing element simpler than, for example, in the case of sealing elements with a round cross-section.
    In this way, the effective sealing surface can be advantageously increased.
    Finally, sealing elements with hexagonally shaped cross-sections can be stored and transported in a particularly simple and space-saving manner during transport or in an automated manufacturing process, since in contrast sealing elements with, for example, round cross-sections, smaller cavities are formed between each other.arranged sealing elements.
    Advantageous further developments of the invention are subject to the dependent claims.
    The sealing element can then have a cross-section at least one hilly corner, in particular on its outer side. According to this application, the term "hilly corner" shall mean a corner, which is, for example, rounded or cut off at its outermost end. Thus, at least one of the six corners located on the outside of the hexagonal shape of the sealing element may be a round counter formed by a straight piece, without Such a rounding or hilling can, in the manufacture of the sealing element, for example advantageously facilitate the shaping of the sealing element.the sealing element from an injection mold.
    The sealing element can advantageously be annularly closed. This way is onadvantageously a sealing effect along the entire extent is guaranteed.
    A further development of the invention proposes that the sealing element in a non-compressed state is designed mirror-symmetrically in its cross section to a longitudinal axis and to a transverse axis. In this case, the transverse axis extends perpendicular to the longitudinal axis. In the built-in state of the sealing element, in particular the longitudinal axis extends mainlyparallel to the housing longitudinal axis.
    In other words, in a state in which it does not change in its shape by pressure or in a force-free state, the sealing element has two axes of symmetry. The transverse axis extendspreferably in radius | direction.
    Due to this symmetry, it is advantageously achieved that the sealing element is particularly easy to manufacture and can also be used in the event of an internal distortion or "twist" without appreciable change in the sealing effect. By a distortion or twisting is meant a process which leads to the actually radially inwardly facing side pointing radially outwards and the actually radially outwardly pointing side invertingradially inwards.
    Thus, through this symmetrical design can advantageously require an effortvisual inspection lapses before installation.
    A further development of the invention proposes that the sealing element in the cross section is formed by a first isosceles triangle, a rectangle connecting to the base of the first triangle and a second isosceles triangle, the base of the second triangle joining the rectangle. In this case, the first triangle and the second triangle can have the same side lengths. In this case, the first triangle and the second triangle can have hillscorner.
    By the base of an isosceles triangle is meant the side of the triangle which does not have the same leg lengths as the other two sides. In the case of an equilateral trianglerefers to one of the three sides.
    Due to this constructive design of the sealing element, a particularly high stability is achieved against a distortion or "twist". Furthermore, such a format sealing element is particularly easy to manufacture. In the production by means of an injection molding process, such a shaped sealing element can be removed particularly easily fromthe form.
    A further development of the invention proposes that one of the two equally long sides (s1) of the first triangle enclosed first angle a1 and one of the two equally long sides (s1 ') of the second triangle enclosed second angle oL2 in all cases lie in an area between ° and 110 °, in particular in a range between 30 ° and 90 °, particularly advantageously between 45 ° and 80 °. Thereby, a particularly large sealing surface or contact surface is advantageously provided between the sealing element and the first housing element or the second housing element. Furthermore, this enables in particular a redirection of pressure acting along the longitudinal axis in a radial transformation and a radially acting pressure application, respectively, by means of the sealing element, whereby the sealing effect onadvantageous way can be improved.
    A further development of the invention proposes that in the cross section of the sealing element a maximum first diameter D1 along the longitudinal axis and along the longitudinal axis direction is greater than a maximum second diameter D2 along the transverse axis and along the transverse axis direction, respectively. In this case, the maximum first diameter D1 can be at least 1.5 times as large as the maximum second diameter D2. Preferably, the maximum first diameter D1 is at least twice as large as the maximum second diameter D2, and most preferably, the maximum first diameter D1 is at least 2.5 times or even at least three times as large as the maximum second diameter D2. small wall thickness of the first and second housing elements, a particularly large sealing surface and contact surface between the sealing element and the first housing element and the second housing element, respectively, is thereby obtained.Thus the sealing effect is improved and the wall elements of the housing elements can be kept small. As the sealing surface extends along the proposed structural configuration. without requiring a corresponding extension in the radial direction, as would be required, for example, with a sealing element with a round cross-section. In addition, in this way the risk of a leakage even with minor material defects the cough sealing element is considerably reduced, as the length s with the longitudinal axis, a greatly extended sealing path is obtained at the same wall thickness of the housing elements compared to asealing element with round cross section.
    A further development of the invention proposes that the first housing element has a first circumferential side wall and in particular is cup-shaped, the first side wall and the first housing wall, respectively, having a circumferential groove in their front side. In this case the sealing element can be arranged in the groove. As a result, a particularly simple mounting option is obtained in an advantageous manner, whereby the sealing element is safely inserted into the groove during the assembly process loss, before the second housing element is mounted. An oblique slip of the sealing element and a possible source of leakage thereby caused can thus be advantageously avoided. Furthermore, in this way the sealing surfaces between the first housing element and the sealing element and also between the second housing element and the sealing element can advantageously be increased, whereby when exerting a directionally acting force on the sealing element the sealing element transforms this force and this pressure in a radial transformation and thereby increasesthe sealing surface.
    A further development of the invention proposes that the second housing element has a second circumferential side wall and in particular a cup-shaped design, the second side wall with its front side being insertable into the groove of the first side wall or inserted into the groove in mounted condition of the liquid filter. Due to this further development, a particularly high sealing effect is achieved and the liquid filter is also fluid-tightly sealable with a small clamping force between the two housing elements. Advantageously, this constructive configuration also reduces the risk of incorrect mounting, since the engagement of the front side of the second side wall in the groove of the first side wall forms a groove-spring system, in which only the suitable second housing element can be assembled with thethe first housing element of the housing in accordance with a poka-yoke solution.
    A further development of the invention proposes that the second side wall and the second housing wall, respectively, in a sealing section adjacent to their front side, radially inwardly pointing, have an (inner) slope with a first slope end adjacent to the front side and extending from there in the direction of the housing longitudinal axis. Thereby, the sealing section wall thickness can decrease from the first slope end of the (inner) slopeto the other slope end.
    A further development of the invention proposes that the radially outer side surface of the isosceles triangle facing the second housing element is in mechanical contact with the radially inwardly facing surface of the second side wall or with the (inner) inclination of the second side wall, whereby through the mechanical contact between the the second side wall or the (inner) slope and the sealing element are providedparticularly fluid tight seal.
    In another development of the invention it is envisaged that the second side wall and the second housing wall, respectively, in a radially outwardly showing sealing section adjacent to their front side, have an (outer) slope with a first slope end adjoining the front side and one extending therefrom in the direction of the housing longitudinal axis. slope wall. In this case, in the sealing section, the wall thickness can increase from the first slope end ofthe (outer) slope up to the other slope end.
    In a further development of this embodiment of the invention, it is provided that the radially inner side surface of the isosceles triangle facing the second housing element is in mechanical contact with the radially outer horizontal surface of the other side wall or with the (outer) inclination of the second side wall, through the mechanical contact between the second side wall or the slope and the sealing elementa particularly fluid-tight seal is provided.
    By designing the slopes in the sealing section of the second housing wall, the use of the sealing surface, i.e. the surface on which the sealing element comes into mechanical contact with the second side wall, can be advantageously increased. Thereby advantageously the sealing effect increases or decreases. a desired sealing effect. At the same time, the inclination can advantageously provide a self-centering and a centering of the sealing element in the radial direction when assembling the second housing element with the first housing element and thus reduce the risk of a leak. Finally, in this way, a longitudinally acting force and a longitudinally acting pressure viathe slope and the hexagonal shape of the sealing element are transformed into a radialdirection and in a radial transformation of the sealing element, whereby the sealing surfaceexpanded and the sealing effect improved.
    In the design of the side wall with an (inner) opening, the advantageous set sealing element is compressed radially and can thus abut tightly against an inner wall of the groove of the first housing element. Advantageously, this compression counteracts one withthe increasing porosity of the sealing element of the sealing element.
    In the design of the side wall with an (outer) slope, the advantageous set sealing element is pulled radially apart and can thus lie close to an outer wall of groove etching the first housing element. The intrinsic elasticity of the sealing element thus advantageously provides a particularly effective seal between the sealing element, which tends to contract radially inwards, and the (outer) inclinationrespectively the second side wall.
    DrawingsAdditional criteria and advantages of the present invention will become apparentthose skilled in the art of the following description of exemplary embodiments, whichhowever, should not be construed as limiting the invention, with reference to the appended claimsthe drawings.
    They show:Fig. 1a: a cross section of a liquid filter according to the invention;Fig. 1b: a section of the cross section from Fig. 1a;Fig. 2a: a perspective view of a sealing element according to the invention;Fig. 2b: a cross-section of the sealing element of Fig. 2a;Fig. 3a. a perspective view of the first housing element and a sealing element according tothe invention just before assembly;Fig. 3b: a cross section through the first housing element and the sealing element from Fig. 3a.
    Fig. 1a shows simply schematically in cross section an embodiment of the liquid filter 100 according to the invention. The liquid filter 100 may be particularly suitable for fuels (eg diesel or petrol) or also for urea solution. The liquid filter 100 comprises a housing 200 with a single-housing longitudinal axis 280. The housing can be formed substantially rotationally symmetrically in the form of a hollow cylinder, for example a circular cylinder or also be flat or ellipsoidal orrectangular with rounded edges.
    Arranged in the interior of the housing 200 is a filter insert 110, which is configured to separate particles and / or water from the fuel or urea solution. The filter insert comprises a filter element 112, a first end piece 150 and a second end piece 160. The filter element 112 may, for example, be star-folded and fluid-tight. between the first end piece 150 and the second end piece 160, for example with sinafront sides glued to the two end pieces 150, 160. The filter element 112 can, for example, be radiated through radially from the outside and inwards, thus separating an outerlocated raw side from an inner located clean side.
    In the figure, a leveling element 140 is arranged below the filter insert 110, which is suitable for compensating for a volume increase when the liquid in liquid filter 100 is frozen (for example when the liquid is water) in such a way that the housing 200 of the liquid filter 100 does notinjured.
    The housing 200 is formed of a first housing element 210 and a second housing element 220 separate therefrom. Between the first housing element 210 and the second housing element 220 a sealing element 300 for fluid-tight sealing of the two housing elements 210, 220 is arranged opposite each other. The sealing element 300 then has a substantially cross-sectional viewhexagonal form.llThe first housing element 210 has a first circumferential side wall 212. The first housing element 210 may be, for example, cup-shaped. The first housing wall 212 and the first side wall 212, respectively, have a front side 214. In the front side 214 of the first side wall 212, a circumferential groove 216 is formed. In the groove 216 the sealing element 300 can be inserted and in the groove 216 the sealing element 300 is inserted in the assembled state of the liquid filter 100. The first housing element 210 further has a liquid inlet 120, through which the unfiltered liquid can flow into the liquid filter 100. In the exemplary embodiment shown, the liquid inlet 120 is slightly eccentrically arranged on the housing longitudinal axis 280. The first housing element 210 further has a liquid outlet and a central outlet 130. which the purified liquid can leave againthe liquid filter 100.
    The filter insert 110 is then fixed in the housing 200 in such a way that it fluidly separates the raw side from the cleaning side and the liquid only comes from the liquid inlet 120 to the liquid outlet 130.as it passes the filter insert 110.
    The second housing member 220 has a second circumferential side wall 222. The second circumferential side wall 222 may be cup-shaped. The second side wall 222 has a front side 224, which in the assembled state of the liquid filter 100 faces the front side 214 of the first side wall 212. The diameter of the second side wall 222 is formed so that the front side 224 of the second side wall 222 is insertable into the groove 226 of the first the side wall 212 and respectively are inserted into the assembled state ofthe liquid filter 100.
    To fluidly assemble the housing 200 of the liquid filter 100, the second housing member 220 is inserted below the intermediate position of the sealing member 300 in the groove 216 of the first housing member 210. The first housing member 210 and the second housing member 220 are clamped to seal along the longitudinal axis 280 so that the sealing member 300 the first housing element 210 and the second housing element 220 are loaded with pressure along the medial longitudinal axis 280. Thereby the sealing element 300 comes into mechanical contact with the first side wall 212 and with the second side wall 222, whereby the sealing actionoccurs. The voltage of the first housing element 210 and the second housing element 220 can12for example, by means of a clip connection, by an externally intended bracket or also by a screw connection, whereby in the first housing element 210 and the second housing element 220 complementary to each otherscrew threads must be designed (the clamping elements are not shown here).
    Here also not shown exemplary embodiments are conceivable, in which the first housing element 210 does not have a groove 216 in the front side 214. In such embodiments the edge sealing element 300 can for instance be arranged on an outside of the side wall 212 of the first housing element 210. The second housing element 220 is then pushed with its side wall 222 over the outside of the side wall 212 of the first housing element 210. In this exemplary embodiment, a radial and lateral seal of the sealing element 300, respectively, is located substantially differently from the exemplary embodiment shown in Fig. 1a, in which both a sealing effect alongthe housing longitudinal axis 280 which also provides a radial sealing effect.
    The first housing element 210 and the second housing element 220 can then be formed ofmetal or of a plastic such as polyamide, eg PA 66.
    The sealing element 300 is preferably formed of an elastic and highly elastic material, respectively, and may comprise, for example, rubber, polyethylene (PE) or polytetrafluoroethylene (PTFE, Teflon). The sealing element can be produced, for example, by injection molding orby compression molding.
    Fig. 1b shows a cut-out from Fig. 1a, in which the interaction between the first housing element210, the sealing element 300 and the second housing element 220 are shown in magnification.
    In the figure it can be seen that the groove 216 in the cross-section shown has the form of a single-hole bore in the first side wall 212, starting from the front side 214 of the first side wall 212. In this case the groove 216 in the first side wall 212 is inserted first from the front side 214 of the first side wall 21. with a groove diameter in the front side wall 212, the groove diameter on the radially outer side of the closed end of the blind hole approximately from the last third of the length of the blind hole alongwith the housing length axis 280 seen sloping is reduced. In this way, a groove slope is 21713between a first (upper) groove slope end 218 and a second (lower) groove slope end 219 formed. At the second groove slope end 219 of the groove slope 217, the groove 216 has only about 15% to 30% of the original groove diameter, which is present atthe first groove-slope end 218.
    In the groove 216, the sealing element 300 is inserted up to the lower end of the blind hole and the groove 216, respectively. Through the groove slope 217, the sealing element 300 is automatically centered in the radial direction when inserted. It may abut the radially inwardly facing wall oftrack 216.
    The second side wall 222 has in a radially inwardly facing sealing section 226 adjacent to its front side 224 an (inner) slope 227. The (inner) slope 227 has a front side 224 of the second housing wall 222 adjacent the first slope end 228 and turned away therefrom in the inclination section 226 increases the wall thickness 223 of the second housing wall 222 from the first inclination end 228 to the second inclination end 229, in particular it increases by 10% to 50%, preferably by 15% to the second inclination end 229. 30%. The inclination may have an inclination angle [31 with respect to the direction of the housing longitudinal axis 280 in a range between 5 ° and 60 °,preferably between 5 ° and 45 °, most preferably between 10 ° and 35 °.
    If the slope is designed as an outer slope, ie at the radially outwardly facing wall side of the second side wall 222, the criteria stated for the (inner) slope 227 apply.conversely for the outer slope.
    Fig. 2a shows the sealing element 300 in a perspective view. The sealing element 300 has a cross-sectional hexagonal shape and is annularly closed. In the illustrated embodiment, the sealing element 300 is formed in the state of incorporation in the liquid filter 100 rotationally symmetrically about the housing longitudinal axis 280. However, when the liquid filter 100 has a non-circular cylindrical shape, the sealing element 300 may also have a shape deviating from the circular ring. The sealing element 300 has at its upper end in the figure an inwardly inwardly facing inner sealing surface 374 and an obliquely outwardly facing outer sealing surface 372.
    Due to the hexagonal shape in the cross section, the sealing element 300 is particularly rigid14rotation, the outer sealing surface 372 becoming an inner sealing surface 374. In addition, the sealing element 300 exhibits an increased moment of inertia relative to across section round or elliptical shape.
    On the outside of the sealing element 300, at least one corner can be designed as a hilly corner 302. At such a hilly corner 302, at the outside of the sealing element 300, the tip of a corner of the hexagonal shape is rounded and designed as a substantially flat surface. This may, for example, be due to the production, in order in this way, for example in the case of a single-injection molded part, to enable a better removal of the original mold or to avoid spray-thin layers. The hexagonal shape of the cross section is not adversely affected by the decoupled corners 302, as seen from the interior of the sealing element 300, the hexagonal shape with six corners is retained. In other words, the sum of the smooth surfaces of the decoupled corners 302 and the surfaces of the curves of the hilly corners 302 at the outside, respectively, is at most 25%, preferably at most 20%, most preferably at most 10% of the total.the surface of the outside of the sealing element 300.
    Fig. 2b shows a cross-section through the non-compressed, i.e. in non-built-in force-free condition element from Fig. 2a. In the exemplary embodiment shown, the sealing element 300 is mirror-symmetrically designed with respect to a longitudinal axis 380 and a transverse axis 390 extending perpendicular to the longitudinal axis 380. The sealing element 300 may be formed in cross section by a first isosceles triangle 350, a rectangle 360 adjoining a base 355, s2 of the first triangle 350 and a second isosceles triangle 370, the rectangle 360 at its side facing away from the triangle 350 connecting to the base 375, s2 'of itsecond triangle 370.
    The first triangle 350 has two equally long sides s1, which enclose a first angular angle. Furthermore, the first triangle 350 has a third side, the base 355, s2. The second triangle 370 likewise has two equally long sides s1 ', which enclose a second angle oL2. Furthermore, the second triangle 370 has a third side, the base 375, s2'. In the illustrated embodiment, the first triangle 350 and the second triangle 370 have the sameside lengths sl = sl 'and s2 = s2'.
    The first triangle 350 and the second triangle 370 may have hilly corners 302.
    Along the longitudinal axis 380, the sealing element 300 has a maximum first diameter D1 and along the transverse axis 390 a maximum second diameter D2. In this case, the precursor diameter D1 can be larger than the second diameter, for example 1.5 times as large as the second diameter. Preferably, the first diameter D1 is at least twice as large as the second diameter D2, particularly preferably, at least 2.5 times as large or at least three times as largeas the second diameter D2.
    The first diameter D1 extends, for example, from the outer tip of the first triangle 350 to the outer tip of the second triangle 370. The second diameter D2 maycorrespond to the distance between the two outwardly facing sides of the rectangle 360.
    The height h of the sealing element 300 then extends along the longitudinal axis 380 from the tipof the first triangle 350 to the base 375, s2 'of the second triangle 370.
    Fig. 3a shows a perspective view of the first housing element 210 and of the sealing element 300 during assembly. Thereby, the sealing element 300 is inserted into the groove 216 in the front side 214 of the first housing element 210. Due to the symmetry of the sealing element 300, it is essential if the sealing element 300 is inserted into the groove 216 so that the first triangle 350 faces the bottom of the groove 216 or the second triangle 370. is facing the track216 bottom.
    Fig. 3b shows a cross section of Fig. 3a. The sealing member 300 is then formed so that the height h of the sealing member 300 along the longitudinal axis 380 corresponds approximately to the length h of the groove slope 217 along the housing longitudinal axis 280. The height h of the sealing member 300 then extends along the longitudinal axis 380 from the tip of the first triangle 350.base 375, s2 'of the second triangle 370.
    If now, as can be seen in Figs. 1a and 1b, the second sealing element 220 is placed on the first housing element 210 provided with the co-sealing element 300 and during application of apressure along the housing longitudinal axis 280 is clamped against the first housing element 210, then ends up16(inner) opening 227 of the second side wall 222 in mechanical contact with the outer sealing surface 372 of the sealing element 300 at the second triangle 370. Preferably, the angle [31 of the (inner) opening 227 is equal to or greater than half the second angle oL2 of the second triangle 370 of the sealing element 300, with which the (inner) outlet 227 comes into contact. Thus, for example, if the second angle is oL2 = 90 °, then half the second angle is oL2 / 2 = 45 °. The angle [31 should thus be greater than or equal to 45 °, in order to provide as large a sealing surface as possible between the (inner) | orifice 227 and the sealing element 300. Then in the stated relation the upper triangle 370 can particularly advantageously partially convert the pressure along the housing longitudinal axis 280. to a radial pressure or radially inwards fold down or move it. Thereby, the outer sealing surface 372 adapts to the (inner) surface 227, whereby a large contact surface and thus sealing surface is achieved. At the same time, the inner sealing surface 374 can be pressed against the inner horizontal wall of the groove 216 and thus also seals this side. Furthermore, through the specified angular relationship, the risk can be reduced that the (inner) | outlet 227 drills into the assembly during assembly.the sealing element 300 and damages it or displaces it with the sealing element 300.
    In the mounted condition, the front side 224 of the second side wall 222 terminates approximately at the height of the base 375 of the second triangle 370, which faces the second side wall.222 (the first triangle 350 is in this case facing the closed end of the groove 216).
    Due to the special, cross-sectional hexagonal shape of the sealing element 300, a very large sealing surface and thus a large sealing effect can thus be achieved, without being able to bring the sealing element 300 only by applying pressure by means of the resulting reshaping transformation. Then, due to the hexagonal shape, the first triangle 350 and the second triangle 370, especially in the region of their apex, can be relatively easily reshaped. At the same time, through the groove slope 217 and the (inner / outer) slope 227, respectively, at the second side wall 222, a contour approximately equal to the two triangles 350,370 is provided, so that it automatically results in a large sealing surface even without great force. In this way, it becomes possible, for example, to reduce the material thickness of the first housing element 210 or the secondthe housing element 220, since less radial pressure must be absorbed in the sealing process17by pressing the sealing element 300 off the side walls 212, 222. At the same timealso the material of the sealing element 300 is less heavily loaded, so that its service life increases.
    The proposed liquid filter 100 can be used, for example, as a fuel filter for filtering diesel or petrol. In another use, aqueous solutions, such as urea solutions, can also be filtered. The proposed sealing element 300 can be used in such liquid filter 100, in particular in liquid filter 100 with two-part housing 200.
    Finally, it should be pointed out that the terms "present", "including", etc. do not exclude any other elements and terms such as "one" or "one" do not exclude a plural. It should further be pointed out that criteria, which are described with reference to one of the above embodiments , can also be used in combination with other criteria in the above describedworking examples. Reference signs in the requirements should not be construed as limiting.
    权利要求:
    Claims (13)
    [1]
    Liquid filter, in particular for fuels or urea solution, comprising - a housing (200) with a housing longitudinal axis (280), - a filter insert (110) arranged for the housing (200) for separating particles, the housing (200) being formed of a first housing element (210) and a second housing element (220) separated therefrom, wherein between the first housing element (210) and the second housing element (220) a sealing element (300) is arranged for fluid-tight sealing of the two housing elements (210, 220) relative to each other. , the sealing element (300) having a substantially hexagonal shape in cross section.
    [2]
    A liquid filter according to claim 1, wherein the sealing element has at least one hilly corner (302) in cross section.
    [3]
    A liquid filter according to claim 1 or 2, wherein the sealing element (300) is annularly closed.
    [4]
    A liquid filter according to any one of the preceding claims, wherein the sealing element (300) in a non-compressed state in its cross section is mirror-symmetrically formed to a longitudinal axis (380) and to a transverse axis (390), the transverse axis (390) extending perpendicular to the longitudinal axis (380), wherein in the built-in condition of the sealing element (300) the longitudinal axis (380) extends substantially parallel to the housing longitudinal axis (280).
    [5]
    A liquid filter according to any one of the preceding claims, wherein the sealing element (300) in cross section is formed by a first isosceles triangle (350), a rectangle (360) connecting to the base (355, s2) of the first triangle (350) and a second isosceles triangle (370), the base (375, s2) of the second triangle (370) adjoining the rectangle (360) and in particular the first triangle (350) and the second triangle (370) having identical 19 side lengths (sl, s1 ', s2), in particular the first triangle (350) and the second triangle (370) have hilly corners (302).
    [6]
    A liquid filter according to claim 5, wherein one of the two equally long sides (s1) of the first triangle (350) encloses the first angle o1 and one of the two equally long sides (s1 ') of the second triangle (370) encloses the second angle oL2. in all cases is in a range between 20 ° and 110 °, in particular in a range between 30 ° and 90 °.
    [7]
    A liquid filter according to any one of claims 4 to 6, wherein in the cross section of the sealing element (300) a maximum first diameter D1 along the mean longitudinal axis (380) is larger than a maximum second diameter D2 along the transverse axis (390), in particular the maximum first diameter D1 is at least twice as large as the maximum second diameter D2.
    [8]
    Liquid filter according to one of the preceding claims, wherein the first housing element (210) has a first circumferential side wall (212) and is in particular cup-shaped, the first side wall (212) having a circumferential groove (216) in its front side (214). wherein in particular the sealing element (300) is arranged in the groove (216).
    [9]
    Liquid filter according to claim 8, wherein the second housing element (220) has a second circumferential side wall (222) and is in particular cup-shaped, the second side wall (222) with its front side (224) being insertable into the groove (216) of the liquid filter. first side wall (212).
    [10]
    Liquid filter according to claim 9, wherein the second side wall (222) in a radially inwardly facing display sealing section (226) adjacent to its front side (224) has a slope (227) with a first slope end (228) adjacent to the front side (224). and a second inclined end (229) extending therefrom in the direction of the housing longitudinal axis (280), wherein in the sealing section (226) in particular the wall thickness (223) increases from the first inclined end (228) of the inclination (227) to the second slope end (229).
    [11]
    Liquid filter according to claim 9 or 10, wherein the second side wall (222) in a radially outwardly facing display sealing section (226) adjacent to its front side (224) has a slope (227) with a first slope end (227) adjacent to the front side (224). 228) and a second inclination end (229) extending therefrom in the direction of the housing longitudinal axis (280), wherein in the sealing section (226) in particular the wall thickness (223) from the first inclination end (228) of the inclination (227) to the second inclination -end (229).
    [12]
    A liquid filter according to any one of claims 5 to 7 and any one of claims 9 to 11, wherein the radially outer side surface (372) of the isosceles triangle (370) facing the second housing member (220) of the sealing member (300) is in mechanical contact with the radially inwardly facing surface of the second side wall (222) or with the inclination (227) of the second side wall (222), whereby by the mechanical contact between the second side wall (222) or the inclination (227) and the sealing element (300) a special fluid tight seal.
    [13]
    A sealing element for a liquid filter according to any one of claims 1 to 12, wherein the sealing element (300) in cross section has a substantially hexagonal shape, in particular a hexagonal shape with hilly corners (302), and in particular is annularly closed.
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    同族专利:
    公开号 | 公开日
    SE542185C2|2020-03-10|
    DE102015215933B4|2020-03-26|
    DE102015215933A1|2017-02-23|
    IT201600085802A1|2018-02-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2018174783A1|2017-03-20|2018-09-27|Scania Cv Ab|Filter arrangement comprising a housing and a filter unit, and a filter unit comprising a sealing|US5938209A|1997-02-14|1999-08-17|Alternative Fuel Systems, Inc.|Seal system for fluid pressure vessels|
    DE10322555A1|2002-12-30|2004-07-08|Robert Bosch Gmbh|Fuel filter system|JP2021011903A|2019-07-05|2021-02-04|Smc株式会社|Fluororesin molding|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102015215933.7A|DE102015215933B4|2015-08-20|2015-08-20|Liquid filter|
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