DE102022200540A1 - Rotary slide valve for a thermal management system of a motor vehicle - Google Patents

Abstract

In order to create a rotary slide valve (100) for a thermal management system of a motor vehicle, a rotary slide valve (100) with at least the following components is proposed: - a housing (20) with at least three fluid openings (21, 22); - a rotary slide (30) arranged in the housing (20) so as to be rotatable about an axis of rotation (RA); and- a sealing element (40) arranged between the housing (20) and the rotary slide (30), wherein the rotary slide (30) partially closes at least one of the fluid openings (21, 22) in a rotary position and has a flow cutout (31), by means of which in a rotary position of the rotary slide (30) at least two of the fluid openings (21, 22) are fluidically connected, and wherein of the sealing element (40) at least one of the fluid openings en (21, 22), characterized in that the sealing element (40) comprises a first elevation (41) and a second elevation (42) extending in a first radial direction (RDf) and a third elevation (43) extending in an oppositely directed second radial direction (RDs), the elevations (41, 42, 43) being formed circumferentially around at least one of the fluid openings (21, 22), and the third elevation (43) is arranged between the first elevation (41) and the second elevation (42) in relation to this at least one fluid opening (21, 22).

Description

The invention relates to a rotary slide valve for a thermal management system of a motor vehicle according to claim 1.

The invention relates to a rotary slide valve for a thermal management system of a motor vehicle, having a housing with at least three fluid openings, a rotary slide arranged in the housing such that it can rotate about an axis of rotation, and a sealing element arranged between the housing and the rotary slide, the rotary slide having at least one of the fluid openings in a rotary position closed in sections and has a flow cutout, by means of which at least two of the fluid openings are fluidically connected in a rotational position of the rotary slide, and at least one of the fluid openings is circumferentially surrounded by the sealing element.

Rotary slide valves for thermal management systems in motor vehicles are well known. Such rotary slide valves are known in particular as multi-way valves. They are used, for example, to variably connect different fluid openings to one another. For example, several fluid inlet openings are switchably connected to one or more fluid outlet openings, so that different fluid openings are connected to one another or closed by rotating the rotary slide (changing the rotary position).

For example, from the DE 20 2016 103 160 U1 according to the summary, a multi-way valve (1, 1') for controlling at least one flow of at least one fluid, in particular within a motor vehicle. The multi-way valve comprises at least one housing (3) and a valve member (7) arranged at least partially within at least one valve chamber (5) formed at least partially within the housing (3). By changing the rotary position of the valve member (7) within the valve chamber (5) about a first axis of rotation (D), at least the amount of inflow of the fluid from at least one first fluid connection (11) into the valve chamber (5) and/or at least the amount of fluid discharged from the valve chamber (5) can be changed through at least one second fluid connection (13, 15). Furthermore, the multi-way valve (1) comprises at least one insert (17) which is arranged at least in regions between the valve member (7) and the housing (3) and is connected to the housing (3) in a rotationally entrainment-proof manner, and the insert (17) comprises at least one sealing arrangement (18 ).

For example, from the DE 10 2006 032 584 A1 According to the abstract, a cylinder slide arrangement (1) with a cylinder slide (3) arranged rotatably in a housing (2) and subject to play is known. The roller slide (3) has a first flow channel (5) for a fluid, which is arranged transversely to its axis of rotation (3`) and is formed by at least one cheek (4) of the roller slide (3) and the housing (2). The roller slide (3) can be rotated about its axis of rotation (3`) in such a way that a second flow channel (6) arranged in the housing (2) and corresponding to the first flow channel (5) can be closed by the cheek (4), and wherein the cheek (4) has a cavity (7) on the side facing away from the first flow channel (5) which is covered by an elastic sealing element (8). Furthermore, according to claim 2, for example, the sealing element (8) forms a circumferential sealing bead (9) on the side facing away from the cavity (7) and according to claim 3 and claim 4 on the side facing the cavity (7) a structure (10) which serves to fix the position of the sealing element (8) and is a raised area.

For example, from the DE 3 720 082 A1 a sealing arrangement for a rotary valve is known. According to the last paragraph in column 2 of the description, this sealing arrangement contains a profile seal (4) as an essential component, which, according to the summary, is under the influence of the gas forces in a pressure chamber assigned to the rotary valve (3) and for the purpose of avoiding an impermissibly high increase in the contact pressure forces between the profile seal (4) and slide (3) has a slide (3) facing extension (14) of their clear cross section.

For example, from the WO 2021/013340 A1 a rotary slide valve for a cooling circuit, which, according to the summary, has a sealing element (38) surrounding a connection opening (30, 32) between a housing inner wall (36) and a control body (14). According to claim 7, the sealing element (38) has two thickened portions extending parallel to the axis of rotation for fastening the sealing element and according to claim 12 a sealing lip (46) extending in a V-shape towards the housing.

• Es soll ein Drehschieberventil mit einer guten Dichtwirkung und gleichzeitig geringem Widerstand gegen ein Drehen des Drehschiebers bereitgestellt werden.

Compared to previously known rotary slide valves, the invention is based on the object of solving the following problem with means that are as simple and inexpensive as possible:

• A rotary slide valve with a good sealing effect and, at the same time, low resistance to rotation of the rotary slide should be provided.

According to claim 1, the above object is achieved in that the sealing element comprises a first elevation and a second elevation extending in a first radial direction, and a third elevation extending in an opposite second radial direction. The elevations are formed circumferentially around at least one of the fluid openings, and the third elevation is arranged between the first elevation and the second elevation in relation to this at least one fluid opening.

Advantageous developments of the invention are characterized in the dependent claims.

• - ein Gehäuse mit zumindest drei Fluidöffnungen;
• - einen in dem Gehäuse um eine Drehachse drehbar angeordneten Drehschieber; und
• - ein zwischen dem Gehäuse und dem Drehschieber angeordnetes Dichtelement,

wobei der Drehschieber in einer Drehstellung zumindest eine der Fluidöffnungen abschnittsweise verschließt und eine Durchflussaussparung aufweist, mittels welcher in einer Drehstellung des Drehschiebers zumindest zwei der Fluidöffnungen fluidisch verbunden sind, und
wobei von dem Dichtelement zumindest eine der Fluidöffnungen umlaufend umschlossen ist.According to a first embodiment of the invention, a rotary slide valve for a thermal management system of a motor vehicle is proposed, which has at least the following components:

• - a housing with at least three fluid openings;
• - A rotary slide arranged in the housing so as to be rotatable about an axis of rotation; and
• - a sealing element arranged between the housing and the rotary valve,

wherein the rotary slide partially closes at least one of the fluid openings in a rotary position and has a flow cutout, by means of which at least two of the fluid openings are fluidically connected in a rotary position of the rotary slide, and
at least one of the fluid openings being circumferentially surrounded by the sealing element.

The rotary slide valve is primarily characterized in that the sealing element comprises a first elevation and a second elevation extending in a first radial direction, and a third elevation extending in an opposite second radial direction.
wherein the elevations are formed circumferentially around at least one of the fluid openings, and wherein the third elevation is arranged between the first elevation and the second elevation in relation to this at least one fluid opening.

In the following, reference is made to the axis of rotation mentioned when the axial direction, radial direction or the direction of rotation and corresponding terms are used without explicitly indicating otherwise. Unless explicitly stated otherwise, ordinal numbers used in the description above and below only serve to clearly distinguish them and do not reflect any order or ranking of the designated components. An ordinal number greater than one does not mean that another such component must necessarily be present.

The rotary slide is preferably rotatably mounted in the housing and can be driven, for example, by means of a drive unit arranged outside of the housing.

The elevations are correspondingly offset from one another in relation to the fluid opening that they encircle.

The first elevation and the second elevation extend from the sealing element in a first radial direction and the third elevation in a second radial direction. They are preferably formed in one piece from the sealing element, for example in the form of a bead.

In an advantageous embodiment of the rotary slide valve, the first radial direction points in the direction of the housing and the second radial direction points in the direction of the rotary slide, so that the first elevation and the second elevation rest on a sealing surface of the housing and the third elevation at least in one rotational position of the rotary slide on a sealing surface of the rotary valve, or
the first radial direction points in the direction of the rotary slide and the second radial direction points in the direction of the housing, so that the first elevation and the second elevation abut a sealing surface of the rotary slide at least in one rotational position of the rotary slide and the third elevation abut a sealing surface of the housing.

The first radial direction is directed radially outward, ie points away from an axis of rotation to which the radial directions relate. The second radial direction is correspondingly directed radially inwards, ie it points to the axis of rotation.

Depending on the rotational position of the rotary slide, different fluid openings are either fluidly connected to one another, that is to say there is a fluid connection between the fluid openings, or they are closed. The fluid openings can be closed partially, preferably continuously, so that a fluid flow that occurs through the fluid opening during operation can be reduced or increased, preferably continuously, by rotating the rotary slide.

If the rotary slide is in a rotary position in which a fluid opening is completely closed, an elevation surrounding the fluid opening, which is directed radially inwards, is preferably completely in contact with the sealing surface of the rotary slide. Is the fluid port only partially occluded? sen, the elevation is only partially on the sealing surface of the rotary valve. If the fluid opening is completely open, sections of the elevation that extend in a tangential direction (relative to the axis of rotation) are preferably in contact with the sealing surface of the rotary slide. The sections of the elevation running along an axial direction are in contact with the sealing surface of the rotary slide either only on one side of the fluid opening or not at all.

The sealing element is preferably fixed in the housing in a rotationally secure manner, so that the radially outwardly directed elevations are in constant contact with the sealing surface of the housing.

In an advantageous embodiment of the rotary slide valve, the relevant fluid opening is surrounded without interruption by the third elevation and by the first elevation and/or the second elevation.

The elevations thus form a continuous line of contact with a complementary sealing surface of the housing or of the rotary slide.

In an advantageous embodiment of the rotary slide valve, the sealing element is shaped to run along a circular path around the axis of rotation,
wherein several or each of the fluid openings are enclosed by the sealing element, and wherein a first elevation, a second elevation and a third elevation are arranged circumferentially around each of the enclosed fluid openings.

The sealing element is thus in the form of a hollow cylinder or a hollow cylinder section.

Preferably, an inner surface of the housing and an outer surface of the rotary slide opposite the inner surface of the housing are each formed along a circular path. Correspondingly, the inner surface of the housing and the outer surface of the rotary slide are each cylindrical or in the form of a section of a cylinder.

In an advantageous embodiment of the rotary slide valve, several or all of the fluid openings are surrounded by the second elevation.

Preferably, some of the fluid openings are exclusively inlet-side fluid openings and some, preferably only one, of the fluid openings are exclusively outlet-side fluid openings. Accordingly, in some embodiments it is sufficient if the fluid opening on the inlet side can be sealed off from the rotary slide by means of the sealing element.

Preferably, the rotary slide is sealed by means of the sealing element circumferentially at both ends in an axial direction against the housing. In such an embodiment, preferably the third elevation comprises a portion uninterrupted along the tangential direction around the rotary valve, and the first elevation and/or the second elevation, preferably exclusively the second elevation, comprise a portion uninterrupted along the tangential direction along the inner surface of the housing running section. The second elevation is preferably an elevation that runs uninterruptedly along an outer edge of the sealing element and forms a closed shape.

A web is preferably arranged between two adjacent fluid openings, which particularly preferably runs along the axial direction. The ridge is located along the tangential direction between the respective third ridges circumscribing the two fluid ports. In one embodiment, two webs that preferably run parallel to one another are arranged correspondingly between the two third elevations.

In an advantageous embodiment of the rotary slide valve, the sealing element is fastened in the housing by means of a clamping fit against an inner surface of the housing.

In an advantageous embodiment of the rotary slide valve, the sealing element has a parting line and a spring element for a clamping force acting radially outwards.

In an advantageous embodiment of the rotary slide valve, the rotary slide is guided radially without play by one or more of the elevations.

In an advantageous embodiment of the rotary slide valve, at least one, preferably all, of the fluid openings enters the housing radially, and/or at least one of the fluid openings enters the housing axially.

The fluid opening which enters the housing axially is preferably an inlet-side fluid opening.

In one embodiment, several rotary slide valves, as described above, can be assembled along the axial direction to form a rotary slide module. The rotary slide valves of the rotary slide module have, for example, a common fluid opening on the output side and/or fluid opening on the input side or separate fluid openings in each case. Preferably share the rotation slide of the rotary slide module share a common drive unit.

• 1: ein Drehschieberventil in einer Explosionsdarstellung;
• 2: das Drehschieberventil aus 1 in einer Querschnittsansicht;
• 3: einen Ausschnitt eines Drehschieberventils in einer schematischen Darstellung; und
• 4: eine perspektivische Ansicht des Dichtelements.

Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. Show it:

• 1 : a rotary slide valve in an exploded view;
• 2 : the rotary valve off 1 in a cross-sectional view;
• 3 : a section of a rotary slide valve in a schematic representation; and
• 4 : a perspective view of the sealing element.

1 shows a rotary slide valve 100 with a housing 20, a rotary slide 30, a sealing element 40 and a drive unit 50. The rotary slide 30 is rotatably mounted in the housing 20 about an axis of rotation RA. In order to rotate the rotary slide 30, the rotary slide 30 is connected to the drive unit 50 in a torque-transmitting manner.

The housing 20 has a cylindrical inner surface 24 in the preferred embodiment shown. The axis of rotation RA of the rotary valve 30 is arranged coaxially with the inner surface 24 of the housing 20 and a cylindrical outer surface 33 of the rotary valve 30 faces the inner surface 24 of the housing 20 in a complementary manner. The sealing element 40 , which has the shape of a hollow cylinder, is arranged between the outer surface 33 of the rotary slide 30 and the inner surface 24 of the housing 20 .

The housing 20 is closed off at one end face (the upper end face according to the illustration) along an axial direction AD, which runs along the axis of rotation RA, with a passage being provided for a shaft 34 of the rotary slide valve 30 for torque transmission (not shown). The housing 20 is designed to be openable or non-openable on this front side, for example the housing 20 is cast and the front side is part of the cast housing 20. On the opposite front side (as shown below) the housing 20 is closed off by a cover 25 which, for example, screwed on as shown.

In the exemplary embodiment shown, the housing 20 has three fluid openings 21 on the inlet side, through which fluid can flow into the housing 20 . The three input-side fluid openings 21 are arranged side by side and enter the housing 20 radially through the inner surface 24 of the housing 20 . On a radially opposite side, the housing 20 has a fluid opening 22 on the outlet side, through which fluid can flow out of the housing 20 . In an alternative embodiment, one or more fluid openings 21, 22 are arranged axially on the housing 20, preferably on the side facing away from the drive unit 50.

According to the illustration, the sealing element 40 consists of two open rings 46 which axially delimit the sealing element 40 (cf 4 ). In this exemplary embodiment, the two rings 46 are axially spaced apart from one another by five struts 47 . The struts 47 are preferably arranged in each case between the fluid openings 21, 22, so that in such an embodiment there are at least as many webs 48 as there are fluid openings 21, 22. In the present case, the sealing element 40 has an axially running parting line 44, which is delimited laterally by two struts 47 (cf 4 ). Thus, two struts 47 are provided at the parting line 44, which are arranged between two fluid openings 21, 22, so that one strut 47 is provided more than fluid openings 21, 22 are provided. The struts 47 preferably run parallel to the axis of rotation RA.

On the sealing element 40 are in a first radial direction RDf (cf 3 ) First elevations 41 and a second elevation 42 are arranged radially outward. Third elevations 43 are arranged radially inwards in a second radial direction RDs. The first elevations 41 each enclose a fluid opening 21, 22 and are arranged on an edge of the sealing element 40 to the respective fluid opening 21, 22 in the exemplary embodiment shown. At a greater distance from the respective fluid opening 21, 22, ie offset from the first elevations 41, the third elevations 43 enclose the fluid openings 21, 22 in each case circumferentially. The second elevation 42 runs circumferentially along an outer edge of the sealing element 40, which delimits the sealing element 40 in the axial direction AD (at the end faces) and at a parting line 44 (at the side edges). Thus, the second elevation 42 is offset from the first elevations 41 and the third elevations 43 and is at the greatest distance from the fluid openings 21,22. The second elevation 42 encloses all of the fluid openings 21, 22. The third elevations 43 are therefore each located, preferably at least partially centrally, between the first elevations 41 and the second elevation 42.

Along the struts 47, with the exception of the two outer struts 47 (cf 4 ) webs 48 are also formed, which run parallel to the axis of rotation RA and extend radially outwards. The ridges 48 are preferred in cross-section and radial height embodied identically to the first elevations 41 and the second elevations 42 . The webs 48 are offset to the third elevations 43 away from the fluid opening 21, 22 outwards, so that the third elevations 43 in a tangential direction or circumferential direction with a section that extends along the axial direction AD (preferably in the middle) between the first surveys 41 and the webs 48 are arranged. On a strut 47 two webs 48 are arranged in the illustrated embodiment. In an alternative embodiment, a web 48 is arranged for each strut 47 , preferably in the middle, between two adjacent third elevations 43 .

The first elevations 41 , the webs 48 and the second elevation 42 are in contact with a sealing surface 23 of the housing 20 . The first elevations 41 seal around the fluid openings 21 , 22 . The second elevation 42 seals essentially in the axial direction AD at the ends of the housing 20 and at the two outer struts 47 (at the parting line 44) of the sealing element 40 in the tangential direction or the circumferential direction. The webs 48 seal in the circumferential direction between two fluid openings 21, 22 against the housing 20. The third elevations 43 are in contact with a sealing surface 23, 32 of the rotary slide 30 and the sealing slide runs along this during a rotation. The third bumps 43 seal circumferentially around the fluid ports 21, 22 and up and down in the axial direction AD.

In an alternative embodiment, not shown, the first elevations 41, the second elevation 42 and the webs 48 extend radially inwards and rest against the rotary slide 30, and the third elevations 43 extend radially outwards and rest on the housing 20 on.

The rotary slide 30 has a throughflow recess 31 . The through-flow recess 31 is in fluid communication with one of the fluid openings 21 on the inlet side and the fluid opening on the outlet side 22 at least in one rotational position of the rotary slide 30. In this rotational position, a fluid connection can thus be established between the corresponding fluid opening 21 on the inlet side and the fluid opening 22 on the outlet side. For example, the remaining fluid openings 21 on the inlet side can be closed by the rotary slide 30 in this rotary position. The closed fluid openings 21 on the inlet side are sealed off from the rotary slide 30 by means of the sealing element 40 between the housing 20 and the rotary slide 30 . Alternatively or additionally, several of the fluid openings 21 on the input side, for example two, are fluidically connected to the fluid opening 22 on the output side in a rotational position. In this way, for example, two fluid streams can be mixed with one another. Alternatively or additionally, all the fluid openings 21 on the inlet side and/or the fluid openings 22 on the outlet side can be closed in a rotational position. The fluid openings 21 , 22 can be closed continuously by means of the rotary slide 30 by rotating the rotary slide 30 . For example, when two fluid flows are mixed, the proportion of each fluid flow can be adjusted continuously.

The flow cutout 31 in the rotary slide valve 30 preferably does not extend over the entire axial extent of the rotary slide valve 30, so that, as shown, the rotary slide valve 30 has a circular cross-section at the two axial ends of the rotary slide valve 30 at the level of the rings 46 of the sealing element 40. As a result of this shape, the sealing element 40 is pressed circumferentially radially outwards against the housing 20 by the sealing slide, independently of the rotational position of the rotary slide 30 .

The rotary slide valve 100 is preferably designed in such a way that the components described above can be mounted axially. For example, the sealing element 40 can be compressed due to the parting line 44 and its circumference can therefore be reduced. In this way, the sealing element 40 can easily be inserted axially into the housing 20 . The rotary slide 30 can then be pushed into the housing 20 or the sealing element 40 and the housing 20 can be closed by means of the cover 25 . The drive unit 50 can be mounted on the shaft 34 of the rotary valve 30 from the opposite side.

2 shows the rotary slide valve 100 after 1 in a cross-sectional view. Reference is accordingly made to the above description. A spring element 45 is shown in the sealing element 40 in the cross-sectional view. The spring element 45 has a preload which pushes the sealing element 40 apart radially outwards. For assembly, the sealing element 40 is, as explained, compressed at the parting line 44 and reduced in its circumference, so that the spring element 45 is tensioned. In the housing 20, the spring element 45 presses the sealing element 40 apart in an assembled state and thus generates a clamping force, which fixes the sealing element 40 by means of a clamping fit in the housing 20, preferably along the axial direction AD and rotationally (i.e. along the circumferential direction). . For example, the sealing element 40 is made of two materials for this purpose. The spring element 45 is made, for example, from a spring material such as metal or plastic, by means of which a high return force or clamping force can be generated. The surfaces of the sealing element 40, which form the elevations 41, 42, 43 and webs 48, are preferably made of a softer sealing material with good sealing properties (for example rubber or softer plastic). The spring element 45 is enclosed, for example, as a sandwich layer between two layers of the sealing material.

3 shows a schematic representation of a section of an exemplary rotary slide valve 100. The section includes a fluid opening 22 on the outlet side with the adjoining sections of the sealing element 40, the housing 20 and the rotary slide 30, the alignment of the elevations 41, 42, 43 becoming clear. As previously explained, the first elevations 41, the second elevation 42 and the webs 48 are directed radially outward and the third elevations 43 are directed radially inward. In that regard, on the description 1 referred.

The offset arrangement of the third elevation 43 between the first elevation 41 and the second elevation 42 or the first elevation 41 and a web 48 offers the advantage that, despite the good sealing effect, manufacturing tolerances can be compensated for by means of the sealing element 40 and smooth, low-friction rotation of the rotary slide 30 is possible. For this purpose, the sealing element 40 acts like an elastic bending beam. The elasticity of the sealing element 40 can thus also be adjusted via the spacing of the elevations 41, 42, 43 or webs 48 from one another.

4 shows a perspective view of the sealing element 40 from the rotary slide valve 100 1 . In this case, the sealing element 40 has a spring element 45, as shown in FIG 2 explained. In this respect, the statements 1 and 2 referred.

Reference List

100

rotary valve

20

Housing

21

inlet side fluid opening

22

outlet-side fluid opening

23

sealing surface of the housing

24

inner surface of the housing

25

Lid

30

rotary vane

31

flow cutout

32

sealing surface of the rotary valve

33

Outer surface of the rotary valve

34

Wave

40

sealing element

41

first survey

42

second elevation

43

third survey

44

parting line

45

spring element

46

rings

47

striving

48

web

50

drive unit

AD

axial direction

RA

axis of rotation

RDf

first radial direction

RD's

second radial direction

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 202016103160 U1 [0004]
• DE 102006032584 A1 [0005]
• DE 3720082 A1 [0006]
• WO 2021/013340 A1 [0007]

Claims (9)

Rotary slide valve (100) for a thermal management system of a motor vehicle, having at least the following components: - a housing (20) with at least three fluid openings (21, 22); - A rotary valve (30) arranged in the housing (20) so as to be rotatable about an axis of rotation (RA); and - a sealing element (40) arranged between the housing (20) and the rotary slide (30), wherein the rotary slide (30) partially closes at least one of the fluid openings (21, 22) in a rotary position and has a flow cutout (31), by means which in a rotational position of the rotary slide (30) at least two of the fluid openings (21, 22) are fluidically connected, and wherein at least one of the fluid openings (21, 22) is surrounded circumferentially by the sealing element (40), characterized in that the sealing element ( 40) a first elevation (41) and a second elevation (42) extending in a first radial direction (RDf), and a third elevation (43) extending in an oppositely directed second radial direction (RDs), the elevations (41, 42, 43) are formed around at least one of the fluid openings (21, 22), and wherein the third elevation (43) is located between the first elevation (41) and the second elevation (42 ) is arranged. rotary slide valve (100). claim 1 , wherein the first radial direction (RDf) points in the direction of the housing (20) and the second radial direction (RDs) points in the direction of the rotary valve (30), so that the first elevation (41) and the second elevation (42) on a sealing surface ( 23) of the housing (20) and the third elevation (43) is in contact with a sealing surface (32) of the rotary slide (30) at least in one rotational position of the rotary slide (30), or the first radial direction (RDf) in the direction of the rotary slide (30 ) and the second radial direction (RDs) points in the direction of the housing (20), so that the first elevation (41) and the second elevation (42) at least in one rotational position of the rotary slide (30) on a sealing surface (32) of the rotary slide ( 30) and the third elevation (43) rests against a sealing surface (23) of the housing (20). rotary slide valve (100). claim 1 or claim 2 , wherein the fluid opening (21, 22) in question is continuously surrounded by the third elevation (43) and by the first elevation (41) and/or the second elevation (42). Rotary slide valve (100) according to one of the preceding claims, wherein the sealing element (40) is formed to run along a circular path around the axis of rotation (RA), wherein several or each of the fluid openings (21, 22) are surrounded by the sealing element (40), and a first elevation (41), a second elevation (42) and a third elevation (43) being arranged circumferentially around each of the enclosed fluid openings (21, 22). Rotary slide valve (100) according to one of the preceding claims, wherein several or all of the fluid openings (21, 22) are surrounded by the second elevation (42). A rotary valve (100) according to any one of the preceding claims, wherein the sealing member (40) is secured in the housing (20) by means of an interference fit against an inner surface (24) of the housing (20). rotary slide valve (100). claim 6 , wherein the sealing element (40) has a parting line (44) and a spring element (45) for a radially outwardly acting clamping force. Rotary slide valve (100) according to one of the preceding claims, wherein the rotary slide (30) is guided radially without play by one or more of the elevations (43). Rotary slide valve (100) according to one of the preceding claims, wherein at least one, preferably all, of the fluid openings (21, 22) enters radially into the housing (20) and/or at least one of the fluid openings (21) enters axially into the housing (20 ) entry.

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