Valve body sealing element

Abstract

The invention relates to a valve body sealing element (40) with a central axis (X) and an elastic body (4) being deformable to seal, wherein multiple pass-through holes (41) are spaced through said elastic body (4) so that the elastic body (4) forms grid-like segments (42) around said pass-through holes (41) and wherein said elastic body (4) has an inner sealing area (4b) facing the central axis (X) and an outer sealing area (4a) facing away from the central axis (X) and wherein said sealing area (4a) is provided with sealing ribs (4.1) around said pass-through holes (41), said sealing rib (4.1) protruding over a basic surface (BS) of said elastic body (4), wherein said basic surface (BS) is alignable parallel to a sealing surface (1.3, 2.2) of a bushel. The sealing and the low-friction are to improve also with ageing of the sealing element. Said elastic body (4) is provided with at least one seal lip (4.2) positioned next to and in parallel to said sealing rib (4.1) and protruding over a basic surface (BS) of said elastic body (4), wherein the seal lip (4.2) has different elastic properties and / or a different shape in relation to the cross-sectional area, which differ from the properties of the sealing ribs (4.1).

Description

[0001] Valve body sealing element

[0002] TECHNICAL FIELD

[0003] The invention relates to a low-friction and high-sealing valve body sealing element with a central axis and an elastic body being deformable to seal, wherein multiple pass-through holes are spaced through said elastic body so that said elastic body forms grid-like sections around said pass-through holes and wherein said elastic body has an inner sealing area facing the central axis and an outer sealing area facing away from the inner sealing area and wherein said sealing area is provided with grid-like sealing ribs around said pass-through holes, said sealing ribs protruding over a basic surface of said elastic body, wherein said basic surface is alignable parallel to a sealing surface of a bushel. The valve body sealing element is for a conical or cylindrical or spherical bushel. The invention also relates to a multiport valve module system, comprising a housing (valve housing) with a plurality of ports and a central axis, which encloses a working chamber closed with a cover that is assembled to the housing for sealing the working chamber and a bushel with at least one channel and with a plurality of openings, placed in the working chamber and being rotatable about the central axis and being linearly movable in axial direction of the central axis.

[0004] BACKGROUND

[0005] A generic valve body sealing gasket is known from CN 220540295 U. The low- friction high-sealing electronic water valve body sealing gasket is characterized by comprising a rubber elastic main body, wherein one side of the rubber elastic main body is provided with a wear-resistant diaphragm. A plurality of circulating holes penetrating through the wear-resistant diaphragm is formed in the rubber elastic main body at intervals. A plurality of grooves penetrating through the wear- resistant membrane is formed in two sides of the rubber elastic main body in the length direction.

[0006] It is an object of the present invention to design and arrange a valve body sealing element in such a way that the sealing and the low-friction are improved also with ageing of the sealing element. According to an aspect of the invention, the problem is solved in that said elastic body is provided with at least one seal lip positioned next to and in parallel to said sealing rib, wherein the seal lip has different elastic properties and / or a different shape in relation to the cross-sectional area, which differ from the properties of the sealing ribs. In the non-deformed form of said elastic body, the seal lip has preferred a height_HL which is higher by an amount than a height_HR of the sealing rib, said heights with reference to said basic surface. The sealing of the housing openings is obtained by at least one seal rib and one seal lib positioned parallel next to each other. The elastic body is made of an elastomer of which hardness enables to have an elastic deformation, and features a polymer layer (friction reducing element) on the bushel side.

[0007] Because of the different heights, there is a two-step deformation of the elastic body when the bushel is translated along the central axis and moves in direction of the housing. The first step of the deformation involves the flexion of the two higher seal lips that extend sideways of the segment in direction of the pass- through holes. The second step of the deformation involves the compression of central rib or sealing rib. The first step deformation enables to ensure an efficient sealing with a low reaction force when the rubber-elastic body is new. When mounted and pressed against the sealing surface, the lip is bent to seal and to fit tightly against the sealing surface of the housing. Additionally, said sealing rib is pressed to said sealing surface in a direction of said rib axis to seal and to fit close against said sealing surface. Herewith, the central rib is separated from the directed fluids or gases as regards chemical attack as well as thermal stress. The second step deformation enables to ensure an efficient sealing with constant reaction force after the elastomer material stiffness increases because of ageing. The central axis is coaxial to a rotation axis of the bushel.

[0008] The different properties between the lips and the ribs result in different types of sealing. A lower elasticity, for example, guarantees a much longer service life than a high elasticity. The advantage of high elasticity is sealing with less force. This means that different sealing options can be achieved with the same sealing element. There is also redundancy in the event that one of several lips or ribs does not seal completely. The sealing element basically has grid-like design. The grid-like design is formed by segments that are arranged crosswise. The segments frame said pass-through holes (flow hole). The segment has a cross section showing several seal ribs and / or seal lips.

[0009] The cross section in radial direction to the central axis features in general three or four elements of the rubber-elastic body for sealing in form of ribs and lips. The two lips are partly orientated to an outside of the segment to the left or to the right of the sealing element. The central sealing rib is orientated between the two side lips. In all the examples shown, the lips or ribs have a specific orientation. A theoretical geometric axis is decisive for this orientation. In the case of a rib, the rib axis is for example a centre axis and in the case of a lip, the lip axis is for example an orientation axis running parallel to a flank of the lip. The orientation of the rib axis is essentially right angled to the basic surface and right angled to the segment. In radial direction, the rib axis is in line with an inner protrusion. The sealing element has pass-through holes that are in one-to-one correspondence with opening in the housing.

[0010] According to a relevant aspect of the invention, said elastic body has a second seal lip positioned next to and in parallel to said sealing rib, wherein said sealing rib is positioned between said both seal lips. This protects the sealing rib from the outside. The outer lips prevent direct contact between the rib and the respective medium. This reduces thermal or chemical influences on the rib.

[0011] It is advantageous in terms of a redundancy that the elastic body has a second sealing rib, wherein said second sealing rib is positioned next to said sealing rib and wherein said both sealing ribs are positioned between said both seal lips. The second sealing ribs ensure a second seal so that the risk of leakage is minimised.

[0012] It is advantageous that said seal lip has a lip axis and the sealing rib has a rib axis, wherein at least one of the following conditions applies: Said rib axis and said lip axis are inclined to each other enclosing an angle_a2 or said lip axis of the seal lip is inclined to said basic surface enclosing an angle_b2 or said rib axis is inclined to said basic surface enclosing an angle_b1 , said angle_b1 is between 80° to 100° or 90°. The different angles cause the lips to be elastically bent and the rib to be elastically compressed. Other angular characteristics are also advantageous in order to achieve the best possible seal.

[0013] An important aspect of the invention is that said sealing element has an elastic sealing protrusion, wherein said sealing protrusion is positioned opposite to said sealing ribs and in a radial direction to said central axis in line with said sealing ribs. For sealing, the sealing rib and the protrusion support each other in a linear direction to transfer the pressure to the respective sealing surface from the sealing rib to the sealing protrusion. The sealing protrusion reduces the sealing surface and increases the pressure at the sealing line. The elastic body is made of an elastomer of which hardness enables to have an elastic deformation, for example rubber.

[0014] It is an advantage for stabilisation that said sealing rib and the seal lip are connected to each other with a link, wherein the link is identical in material to the elastic body and forms a one-piece component with the elastic body. The link increases the rigidity of the seal lips in the section of the segments. This is particularly advantageous for the segments if the respective segments are quite long.

[0015] According to a relevant aspect in terms of low force sealing, the sealing rib and the seal lip have notches, wherein the sealing rib and the sealing lip are reduced in their height_HL and height_HR by the notches. The notches make it easier to bend the respective sealing rib or sealing lip in the area where the sealing rib or the sealing lip curves around an axis running in a radial direction. The curve runs in the areas where the individual segments join to form a grid structure.

[0016] To reduce friction, it is advantageous that the sealing protrusion is covered with a separate friction reducing element. Due to the movement of the bushel relative to the sealing element, the reduced friction increases the durability of the sealing element. On the outer sealing area, there is no significant movement of the sealing element relative to the housing, which is why the formation of the structure of seal ribs and seal lips according to the invention is made possible here. In terms of easier production, it is advantageous that said sealing element is divided into several separate sealing parts in the circumferential direction and whereby each of said sealing parts is made of one material or is a combination or a composite of different materials. No sealing effect is required in the areas where the sealing parts abut or lie next to each other in the circumferential direction.

[0017] The wording of axially or axial direction, radially or radial direction, circumferentially or circumferential direction and also coaxially or coaxial position and rotationally, conical and spherical have all a meaning in relation to the central axis. A rotation is also in relation to the central axis and means the movement in circumferential direction. A linear movement is also in relation to the central axis a linear movement in axial direction or a translation. Rotationally symmetric includes at least partially rotationally symmetric, likewise conical or spherical also includes at least partially conical or spherical. For the purposes of the invention, a linear movement is to be understood as meaning the same as a translational movement. An offset is the amount or distance between two axes in parallel.

[0018] BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various aspects of the invention, including its features and advantages, will be readily understood from the example embodiments discussed in the following detailed description and the accompanying drawings, in which:

[0020] Figure 1 illustrates a perspective view of a sealing element with two sealing parts;

[0021] Figure 2 illustrates a sectional part view of a valve;

[0022] Figure 2a illustrates a detail shown in figure 2;

[0023] Figure 3 illustrates a perspective view of a bushel with cavities;

[0024] Figure 4 illustrates a sectional part view of the sealing element;

[0025] Figure 4a illustrates a sectional part view of the sealing element according to fig. 4;

[0026] Figure 5 illustrates a sectional part view of a sealing element with two bent sealing ribs;

[0027] Figure 6 illustrates a sectional part view of a sealing element with two sealing ribs;

[0028] Figure 7 illustrates a perspective view of a sealing part;

[0029] Figure 7a illustrates a perspective view of a detail of a sealing part with links;

[0030] Figure 8 illustrates a perspective view of a detail of a sealing part with links and notches;

[0031] Figure 9 illustrates a perspective view of a sealing part;

[0032] Figure 10 illustrates a sectional view of a valve. The perspective view according to fig. 1 shows a sealing element 40 arranged circumferentially around a central axis X, consisting of an elastic body 4 and a friction reducing element 43. The friction reducing element 43 is placed in a radial direction from the inside on the elastic body 4. The sealing element 40 is divided into two parts in the circumferential direction around the central axis X and accordingly has two individual sealing parts 40a, 40b. Each of the two sealing parts 40a, 40b extends by approximately 180° in the circumferential direction. The two sealing parts 40a, 40b complement each other in the circumferential direction to form the sealing element 40 essentially in the shape of a truncated cone. The sealing element 40 is positioned between a housing 1 and a bushel 2. This position is shown in fig. 2. The sealing element 40 has an outer sealing area 4a orientated outwards towards a housing 1 and an inner sealing area 4b orientated opposite to a bushel 2. The sealing element 40 is in contact with a bushel 2 via the friction reducing element 43. Several pass-through holes 41 are provided in the sealing element 40, via which ports 1.1a, 1.1 b of the housing 1 communicate with at least one cavity 2.1 a in the bushel 2. The sealing element 40 forms a frame around each of the pass-through holes 41 . The respective frame comprises four segments 42 for each pass-through hole, which together form a grid-like structure.

[0033] Fig. 2 shows a sectional view in radial direction to the central axis X of a part of an arrangement of the housing 1 with the bushel 2 and the sealing element 40. The bushel 2 and the sealing element 40 are arranged in a working chamber 1.1 of the housing 1 . The sealing element 40 is arranged between the housing 1 and the bushel 2. The movement of the bushel 2 in the axial direction presses the elastic body 4 against the housing 1 . With the outer sealing area 4a of the elastic body 4 (see fig. 1 ), the elastic body 4 seals against an inner sealing surface 1.3 of the housing 1 . With the inner sealing area 4b (see fig. 1 ) of the sealing element 40, the sealing element 40 seals against an outer sealing surface 2.2 of the bushel 2. The medium flows through the pass-through holes 41 , which are sealed all the way round by the segments 42 of the sealing element 40. The geometric orientation of the inner sealing surface 1.3 and the outer sealing surface 2.2 is shown with dashed lines. The geometry for sealing is shown in figs. 2 to 9. The cavity 2.1 a arranged in bushel 2 connects the two ports 1.1 a, 1 .1 b of housing 1 with each other. The cavity 2.1 a has two openings that are separated by a cavity bridge 2.3. This makes it possible for each opening to be sealed all the way round by the sealing element 40. The ports 1.1 a, 1.1 b are arranged one above the other in the axial direction. Each of the ports 1.1 a, 1.1 b is arranged in a separate plane P1 , P2. The two planes P1 , P2 are spaced apart by a dimension DP. The cavity 2.1a has a cavity axis CA, which extends along the cavity 2.1a from the plane P1 to the plane P2. The cavity axis CA runs parallel to the outer sealing surface 2.2. The geometry of the cavities 2.1a is also shown in fig. 3. The cavity 2.1 b, which is arranged opposite cavity 2.1a, has the same geometry. The rotation of the bushel 2 is transmitted to the bushel 2 via an input shaft 3.

[0034] Figs. 2a, 4a and 4 show the basic structure of the sealing element 40 in a sectional view of a detail from fig. 2. The elastic body 4 has a seal rib 4. T arranged in the centre and two seal lips 4.2', 4.3' arranged opposite the seal rib 4.T. Opposite the seal ribs 4.1 , the elastic body 4 is equipped with a sealing protrusion 4.7. The sealing protrusion 4.7 has a convex cross-section with a maximum curvature opposite the seal ribs 4.1 . The outer sealing area 4a of the bushel 2 is in contact with the outer sealing surface 2.2 of the bushel 2. To reduce friction, the elastic body 4 is covered with a friction reducing element 43 in the area of the outer sealing area 4a. The friction reducing element 43 is in close contact with the outer sealing surface 2.2 of the bushel 2. The pressure on the elastic body 4 or on the sealing element 40 elastically compresses the seal ribs 4.1 at right angles to the inner sealing surface 1.3. An arrow illustrates this deformation. At the end of the seal ribs 4.1 that is in contact with the inner sealing surface 1.3, the compression results in a thickening. The thickening is also shown in fig. 4a with a dashed line. The seal lips 4.2’, 4.3' shown in fig. 2a show that the seal lips 4.2’, 4.3' are not compressed but bent due to their geometry and orientation in relation to the inner sealing surface 1.3. Like the compression, this elastic bending is caused by the resulting pressure in a direction perpendicular to the inner sealing surface 1.3. Two arrows illustrate this deformation.

[0035] The geometry of the elastic properties of the seal lips 4.2, 4.3 are shown using the example of the seal lip 4.3 in more detail in figs. 4 and 4a. The inner sealing surface 1 .3 and the outer sealing surface 2.2 run parallel to each other. The seal lips 4.2, 4.3 basically have a geometric orientation that can be represented by a lip axis 4.2a, 4.3a. The lip axes 4.2a, 4.3a run approximately parallel to a respective flank of the seal lips 4.2, 4.3. As also shown in fig. 4a, the lip axis 4.3a is positioned at an angle_b3 to the inner sealing surface 1 .3 in a non-deformed state, i.e. without pressure on the seal lip 4.3. The pressure causes the seal lip 4.3 to bend, so that the bent seal lip 4.3' shown in fig. 2a and fig. 4a is further bent with its lip axis 4.3a' by an angle_e in addition to the angle_b3. The angle_e is referred to as the elastic angle. The seal lip 4.3 is bent by the 'elastic' angle_e. At least one of the following conditions is fulfilled in the elastic performance of the seal rib and the seal lips: A) Said lip axis 4.2a is inclined to said rib axis 4.1 a in an angle_a2 and a lip axis 4.3a of said second seal lip 4.3 is inclined to said rib axis 4.1 a in an angle_a3, said angle_a3 is not equal to or equal to said angle_a2. B) Both lip axes 4.2a, 4.3a of said seal lips 4.2, 4.3 are inclined to said basic surface (BS) enclosing an angle_b2 and respectively an angle_b3, said angle_b3 is not equal to or equal to said angle_b2.

[0036] By varying the absolute elasticity of the elastomer and the relative elasticity of the respective seal rib and seal lip, the ageing resistance and the sealing properties can be varied depending on the contact pressure of the seal rib and the seal lips. Another option for multiple sealing is to use different geometries and different heights in the seal rib and seal lips.

[0037] Fig. 4 shows a cross-section of the geometry of the sealing element 40 in a nonloaded state, i.e. without pressure. The seal rib 4.1 is aligned with its rib axis 4.1a at right angles to the basic surface BS. The basic surface BS is used to define the height and alignment of the seal ribs 4.1 and seal lips 4.2, 4.3 and is defined parallel to the inner sealing surface 1.3. The seal rib 4.1 has a height_HR. To reduce the friction between the elastic body 4 and the bushel 2, the sealing protrusion 4.7 of the elastic body 4 is coated with the friction reducing element 43. The two outer seal lips 4.2, 4.3 protrude further from the basic surface BS than the seal rib 4.1 . The height_HL of the seal lips 4.2, 4.3 is greater by the amount S than the height_HR of the seal rib 4.1 . The two seal lips 4.2, 4.3 are set at the respective angle_b2 or angle_b3 in relation to the basic surface BS. The alignment of the seal lips 4.2, 4.3 is defined by the respective lip axis 4.2a, 4.3a. The seal lip 4.2 is positioned in the opposite direction to the seal lip 4.3. The geometry and deformation of the two seal lips 4.2, 4.3 are described using seal lip 4.3 as an example. The comparison of figs. 4 and 4a shows how the seal lips 4.3 bend elastically outwards from an unloaded position around the elastic angle_e due to the pressure. Fig. 2a shows the principle of elastic bending for both seal lips 4.2 and 4.3. Fig. 2a shows an actual situation of the elastically deformed elastic body 4.

[0038] As shown in this embodiment example, the angle_b2 is preferably equal to the angle_b3. The seal ribs 4.1 and the seal lips 4.2, 4.3 can also be aligned relative to the ribs or seal lips. The angle_a2 and angle_a3, which are defined between the rib axis 4.1 a and the lip axis 4.2a, 4.3a, are decisive for this.

[0039] Because of the different heights, there is a two-step deformation of the elastic body 4 when the bushel 2 is translated along the central axis and moves in direction of the housing 1 . The first step of the deformation involves the flexion of the two higher seal lips 4.2, 4.3 that extend sideways of the segment in direction of the pass-through holes 41 . The second step of the deformation involves the compression of central rib 4.1. The first step deformation enables to ensure an efficient sealing with a low reaction force when the rubber-elastic body 4 is new. When mounted and pressed against the inner sealing surface 1.3, the seal lip 4.2, 4.3 is bent to seal and to fit tightly against the inner sealing surface 1 .3 of the housing 1. Additionally, said seal rib 4.1 is pressed to the outer sealing surface 2.2 in a direction of the rib axis 4.1 a to seal and to fit close against the outer sealing surface 2.2. Herewith, the central rib 4.1 is separated from the directed fluids or gases as regards chemical attack as well as thermal stress. The second step deformation enables to ensure an efficient sealing with constant reaction force after the elastomer material stiffness increases because of ageing.

[0040] Figs. 5 and 6 show cross-sections of alternative geometries of the sealing element 40. The embodiment example according to fig. 6 has two central seal ribs 4.1 , 4.4. The height_HR of the two seal ribs 4.1 , 4.4 is equal to the height_HL of the two seal lips 4.2, 4.3. The advantage of this embodiment example according to the invention is the different geometries and alignment of the seal lips to the ribs and thus different elastic properties at the sealing. According to fig. 5, the elastic body 4 has two central seal ribs 4.1 , 4.4 that are bent and adjusted in the unloaded state. The seal ribs 4.1 , 4.4 bend in a similar way to the seal lips 4.2, 4.3 when pressure is applied to the inner sealing surface 1 .3. In the shown nondeformed form of the elastic body 4, the seal lips 4.2, 4.3 have a height_HL which is higher by the amount S than a height_HR of the seal rib 4.1 , 4.4.

[0041] Fig. 7 shows a perspective view of the outer sealing area 4a of the sealing part 40a. The segments 42 running around the pass-through holes 41 create a gridlike structure. The segments 42 predominantly have the cross-sectional shape shown in figs. 2a, 4 and 4a. Each of the pass-through holes 41 is surrounded by the segments 42. An enlarged section of fig. 7 is shown in fig. 7a. The seal lips 4.2, 4.3 and the seal ribs 4.1 are then connected to each other by a link 4.5 in the middle of the length of the segments 42. The links 4.5 are shown in detail in the sectional view shown in fig. 2a according to the sectional view Ha-Ha'. Relative to the heights HL, HR of the seal ribs and seal lips, the link 4.5 is reduced in height. It serves to stabilise the seal lips 4.2, 4.3. Fig. 8 shows an example of a sealing element 40 in which the seal lips 4.2, 4.3 have notches 4.6 in the corner areas of the pass-through holes 41 , which improve the bending properties of the seal lips 4.2, 4.3. Accordingly, notches 4.6 are also provided in the outermost seal lips 4.2, 4.3 surrounding the elastic body 4.

[0042] Fig. 9 shows a perspective view of the inner sealing area 4b of a sealing part 40a. The grid-like structure created by the segments 42, which surround the pass- through holes 41 , is also evident here.

[0043] Fig. 10 shows that sealing element 40 is integrated into a valve with a housing 1 and a bushel 2. In addition to the features described above, a drive motor 5 is provided, which rotates the bushel 2 into various positions in the circumferential direction via the input shaft 3. The rotatable input shaft 3 is penetrating the cover 1.2 to drive the bushel 2 for the rotation, wherein the sealing element 40 is positioned between the bushel 2 and the housing 1. The linear movement of the bushel 2 in the axial direction generated during rotation takes place via cams, which are not shown. A preload component 6 is assembled between the housing 1 and the bushel 2, by means of which said bushel 2 is preloaded in the axial direction against the sealing element to ensure a closed and a tight seat of said sealing element 40.

[0044] List of references housing .1 working chamber .1a port .1b port .2 cover .3 inner sealing surface bushel .1a cavity .1 b cavity .2 outer sealing surface .3 cavity bridge input shaft elastic body a outer sealing area b inner sealing area .1 sealing rib .1’ sealing rib compressed .1a rib axis .2 seal lip .2’ seal lip bent .2a lip axis .3 seal lip .3’ seal lip bent .3a lip axis .3a’ lip axis bent .4 sealing rib .5 link .6 notch .7 sealing protrusion 0 sealing element 0a sealing parts 40b sealing parts

[0045] 41 pass-through holes

[0046] 42 segments

[0047] 43 friction reducing element

[0048] 5 drive motor

[0049] 6 loading component a2 angle a3 angle

[0050] BS basic surface b1 angle b2 angle b3 angle

[0051] CA cavity axis

[0052] DP distance e elastic angle

[0053] HL height_HL

[0054] HR height_HR

[0055] Ila sectional view

[0056] Ila’ sectional view

[0057] P1 plane

[0058] P2 plane

[0059] S amount

[0060] X central axis

Claims

AMENDED CLAIMS received by the International Bureau on 01.04.2026 (01.04.2026)1 . A valve body sealing element (40) with a central axis (X) and an elastic body (4) being deformable to seal, wherein multiple pass-through holes (41 ) are spaced through said elastic body (4) so that the elastic body (4) forms grid-like segments (42) around said pass-through holes (41 ) and wherein said elastic body (4) has an inner sealing area (4b) facing the central axis (X) and an outer sealing area (4a) facing away from the central axis (X) and wherein said sealing area (4a) is provided with sealing ribs (4.1 ) around said pass-through holes (41 ), said sealing rib (4.1 ) protruding over a basic surface (BS) of said elastic body (4), wherein said basic surface (BS) is alignable parallel to a sealing surface (1 .3, 2.2) of a bushel (2), characterized in that said elastic body (4) is provided with at least one seal lip (4.2) positioned next to and in parallel to said sealing rib (4.1 ) and protruding over a basic surface (BS) of said elastic body (4), wherein a) the seal lip (4.2) has different elastic properties and a different shape in relation to the cross-sectional area, which differ from the properties of the sealing ribs (4.1 ) and / or b) in a non-deformed form of said elastic body (4), said seal lip (4.2) has a height_HL which is higher by the amount S than a height_HR of the sealing rib (4.1 ), said heights_HL, _HR with reference to said basic surface (BS).

2. A sealing element according to claim 1 , characterized in that said elastic body (4) has a second seal lip (4.3) positioned next to and in parallel to said sealing rib (4.1 ), wherein said sealing rib (4.1 ) is positioned between said both seal lips (4.2, 4.3).

3. A sealing element according to claim 1 or 2, characterized in that the elastic body (4) has a second sealing rib (4.4), wherein said second sealing rib (4.4) is positioned next to said sealing rib (4.1 ) and wherein said both sealing ribs (4.1 , 4.4) are positioned between said both seal lips (4.2, 4.3).

4. A sealing element according to at least one of the preceding claims, characterized in that said seal lip (4.2) has a lip axis (4.2a) and the sealing rib (4.1) has a rib axis (4.1a), wherein at least one of a) to c) applies: a) said rib axis (4.1a) and said lip axis (4.2a) are inclined to each other enclosing an angle_a2; b) said lip axis (4.2a) of the seal lip (4.2) is inclined to said basic surface (BS) enclosing an angle_b2; c) said rib axis (4.1a) is inclined to said basic surface (BS) enclosing an an- gle_b1 , said angle_b1 is between 80° to 100° or 90°.

5. A sealing element according to at least one of the preceding claims, characterized in that said sealing element (40) has an elastic sealing protrusion (4.7), wherein said sealing protrusion (4.7) is positioned opposite to said sealing ribs (4.1 ) and in a radial direction to said central axis (X) in line with said sealing ribs (4.1).

6. A sealing element according to at least one of the preceding claims, characterized in that the sealing ribs (4.1 , 4.4) and the seal lip (4.2, 4.3) are connected to each other with a link (4.5), wherein the link (4.5) is identical in material to the elastic body (4) and forms a one-piece component with the elastic body (4).

7. A sealing element according to at least one of the preceding claims, characterized in that the sealing rib (4.1 , 4.4) and / or the seal lip (4.2, 4.3) have notches (4.6), wherein the sealing rib (4.1 , 4.4) and the sealing lip (4.2, 4.3) are reduced in their height_HL and height_HR by the notches (4.6).

8. A sealing element according to claim 3, characterized in that said sealing protrusion (4.7) is covered with a separate friction reducing element (43).

9. A sealing element according to at least one of the preceding claims, characterized in that said sealing element (40) is divided into several separate sealing parts (40a, 40b) in the circumferential direction and whereby each of said sealing parts (40a, 40b) is made of one material or is a combination or a composite of different materials.

10. A multiport valve module system, comprising a sealing element (40) according to at least one of the preceding claims and a) a housing (1 ) having said central axis (X) and with at least two ports (1.1 a-b), wherein the housing (1 ) encloses a working chamber (1.1 ) with an inner sealing surface (1 .3) closed with a cover (1 .2) that is assembled to the housing (1 ) for sealing the working chamber (1.1 ); b) a bushel (2) with at least two channels or cavities (2.1 a, 2.1 b) with a central cavity axis (CA), said bushel (2) is placed in the working chamber (1.1 ) and being rotatable about the central axis (X), wherein said bushel (2) has an outer sealing surface (2.2), wherein said sealing element (40) is mounted between said outer sealing surface (2.2) and said inner sealing surface (1 .3).

11. A multiport valve module system according to claim 10, characterized in that said inner sealing surface (1.3) and said outer sealing surface (2.2) and said sealing element (40) have at least in part a rotationally symmetrical, preferably a conical or a spherical or a cylindrical basic geometry.

12. A multiport valve module system according to at least one of the claims 10 and 11 , characterized in that said cavities (2.1 a, 2.1 b) are spaced along the bushel (2) and around the bushel (2) in the circumferential direction and are located next to each other, wherein the cavities (2.1 a, 2.1 b) and / or the ports (1.1 a, 1.1 b) are arranged in the axial direction of central axis (X) in at least two different planes (P1 , P2), which are aligned at right angles to the central axis (X) and axially spaced by one distance (DP).

13. A multiport valve module system according to one of the claims 10 to 12, characterized in that at least one cavity (2.1a, 2.1 b) covers at least two different ports (1.1a, 1.1 b), wherein said two different ports (1.1 a, 1.1 b) are arranged in two different planes (P1 , P2).

14. A multiport valve module system according to at least one of the preceding claims 10 to 13, characterized in that said valve module system is a) part of a cooling system or a Thermal Management System or b) a part of a Thermal Management Module device to manage the refrigerant or coolant flow in a thermal management system or c) a Thermal Management Module device for transportation industry or for battery electrical vehicle or for hybrid vehicle or for heavy duty industry.

15. Method to improve a low friction for a valve body sealing element (40) having an elastic body (4) being deformable to seal, wherein the body (4) has at least one sealing rib (4.1 ) and at least one seal lip (4.2) being positioned parallel and next to each other, characterized in that said body (4) is manufactured in a way, that the sealing rib (4.1) has a smaller height_HR as said height_HL of said sealing lip (4.2, 4.3), both respectively with reference to a basic surface (BS), wherein the basic surface (BS) is parallel to said sealing surface (1 .3).

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