mixing valve

Abstract

The invention relates to a mixing valve, in particular for a heat transfer medium circuit and / or a motor vehicle, comprising a housing (100) having a first inlet (11), a second inlet (12), a first outlet (21) and a second outlet (22), and a valve element (200) adjustably arranged at least partially in the housing, the valve element having a first fluid passage which in a first position of the valve element communicates the first inlet with the first outlet, in a second position of the valve element communicates the first inlet with the second outlet, and in a third position of the valve element communicates the first inlet with the first outlet and the second outlet, the valve element having a second fluid passage which in the first position of the valve element communicates the second inlet with the second outlet, in the second position of the valve element communicates the second inlet with the first outlet, and in the third position of the valve element communicates the second inlet with the first outlet and the second outlet.

Description

TECHNICAL FIELD

[0001] The invention relates to a mixing valve, in particular for a heat transfer medium circuit and / or a motor vehicle, a heat transfer medium circuit and a motor vehicle having a mixing valve and a method for selectively connecting an inlet and an outlet of a mixing valve. SUMMARY

[0002] The object of the invention is to improve a valve.

[0003] This object is achieved by a mixing valve having the features of claim 1. Claims 10 to 12 claim a heat transfer medium circuit and a motor vehicle having a mixing valve or a heat transfer medium circuit as described herein and a method for operating such a mixing valve. The dependent claims relate to advantageous refinements.

[0004] According to an embodiment of the invention, the mixing valve comprises a housing having a first inlet, a second inlet, a first outlet and a second outlet, and a valve element, in particular a valve body, which is arranged at least partially in the housing adjustably, in one embodiment rotatably about a (virtual) axis of rotation, in one refinement rotatably through at least 30°, in one embodiment rotatably through at least 45°, in one refinement rotatably infinitely or rotatably more than 360°, and which has:

[0005] a) a single- or multi-channel first fluid channel which

[0006] i) connects the first inlet with the first outlet in a first position of the valve element;

[0007] ii) connects the first inlet with the second outlet in a second position of the valve element; and

[0008] iii) connects the first inlet with the first outlet and the second outlet in a third position of the valve element; and

[0009] b) a single- or multi-channel second fluid channel which

[0010] i) connects the second inlet with the second outlet in the first position of the valve element;

[0011] ii) connects the second inlet with the first outlet in the second position of the valve element; and

[0012] iii) connects the second inlet with the first outlet and the second outlet in a third position of the valve element, which in one embodiment is between the first and second positions.

[0013] In one embodiment,

[0014] a) in a first position of the valve element,

[0015] only the first inlet is in communication with the first outlet and the second inlet is in communication with the second outlet;

[0016] the first inlet is not in communication with the second outlet, the second inlet is not in communication with the first outlet, and the first inlet is not in communication with the second inlet;

[0017] the first inlet is separated from the second inlet and the second outlet, and the second inlet is separated from the first outlet; and / or

[0018] b) in a second position of the valve element, only the first inlet is in communication with the second outlet and the second inlet is in communication with the first outlet; or

[0019] the first inlet is not in communication with the first outlet, the second inlet is not in communication with the second outlet, and the first inlet is not in communication with the second inlet; or

[0020] the first inlet is separated from the first outlet and the second inlet, and the second inlet is separated from the second outlet.

[0021] Thereby, in an embodiment, in addition to the separation and the serial or cross communication of the fluid flows, a mixing of the fluid flows is advantageously realized. The mixing valve is in an embodiment a fluid valve, in a refinement a valve for alternatively or selectively separating, serially or cross communicating and mixing liquids.

[0022] In an embodiment, the smallest flowable cross section between the first inlet and the first outlet is smaller in the third position of the valve element than in the first position of the valve element and in a refinement greater than zero. As mentioned above, in an embodiment, the smallest flowable cross section between the first inlet and the first outlet is equal to zero in the second position of the valve element.

[0023] Additionally or alternatively, in an embodiment, the smallest flowable cross section between the first inlet and the second outlet is smaller in the third position of the valve element than in the second position of the valve element and in a refinement greater than zero. As mentioned above, in an embodiment, the smallest flowable cross section between the first inlet and the second outlet is equal to zero in the first position of the valve element.

[0024] Additionally or alternatively, in an embodiment, the smallest flowable cross section between the second inlet and the second outlet is smaller in the third position of the valve element than in the first position of the valve element and in a refinement greater than zero. As mentioned above, in an embodiment, the smallest flowable cross section between the second inlet and the second outlet is equal to zero in the second position of the valve element.

[0025] Additionally or alternatively, in an embodiment, the smallest flow-through cross section between the second inlet and the first outlet is smaller in the third position of the valve element than in the second position of the valve element and, in a refinement, greater than zero. As mentioned above, in an embodiment, the smallest flow-through cross section between the second inlet and the first outlet is equal to zero in the first position of the valve element.

[0026] Thereby, in an embodiment, an advantageous mixing of the fluid flow is achieved.

[0027] In an embodiment, in the fourth position of the valve element, the first fluid channel communicates the first inlet with the first outlet and the second outlet, and the second fluid channel communicates the second inlet with the first outlet and the second outlet.

[0028] In an embodiment, the smallest flow-through cross section between the first inlet and the first outlet is smaller in the fourth position of the valve element than in the first and third positions of the valve element and, in a refinement, greater than zero.

[0029] Additionally or alternatively, in an embodiment, the smallest flow-through cross section between the first inlet and the second outlet is smaller in the fourth position of the valve element than in the second position of the valve element but larger than in the third position of the valve element and, in a refinement, greater than zero.

[0030] Additionally or alternatively, in an embodiment, the smallest flow-through cross section between the second inlet and the second outlet is smaller in the fourth position of the valve element than in the first and third positions of the valve element and, in a refinement, greater than zero.

[0031] Additionally or alternatively, in an embodiment, the smallest flow-through cross section between the second inlet and the first outlet is smaller in the fourth position of the valve element than in the second position of the valve element but larger than in the third position of the valve element and, in a refinement, greater than zero.

[0032] Thereby, in an embodiment, a different or variable mixing of the fluid flow is advantageously achieved.

[0033] In an embodiment, in another position of the valve element, the first fluid channel communicates the first inlet only with the first outlet, and the second fluid channel communicates the second inlet with the first outlet and the second outlet.

[0034] Additionally or alternatively, in an embodiment, in another position of the valve element, the first fluid channel communicates the first inlet only with the second outlet, and the second fluid channel communicates the second inlet with the first outlet and the second outlet.

[0035] Additionally or alternatively, in an embodiment, in the other position of the valve element, the first fluid channel communicates the first inlet with the first outlet and the second outlet, and the second fluid channel communicates the second inlet only with the first outlet.

[0036] Additionally or alternatively, in an embodiment, in the other position of the valve element, the first fluid channel communicates the first inlet with the first outlet and the second outlet, and the second fluid channel communicates the second inlet only with the second outlet.

[0037] Thereby, in an embodiment, a different or variable mixing of the fluid flow is advantageously achieved.

[0038] In an embodiment, the valve element is adjusted or adjustable, in particular rotatable, continuously or steplessly from the first position to the third or fourth position or one of the other positions, from the second position to the fourth or third position or one of the other positions, and / or from the third position to the fourth or one of the other positions, between at least two of the positions described herein, in an embodiment in a reversible manner.

[0039] In an embodiment, the valve element has, in addition to the positions mentioned here, a plurality of intermediate positions, in an embodiment an infinite number of intermediate positions, which in particular are capable of being continuously transitioned into one another. In an embodiment, the valve element is adjusted or adjustable, in particular rotatable, continuously or steplessly, and in an embodiment continuously through one or more of the positions described here.

[0040] Thereby, in an embodiment, an advantageous, in particular low-loss and / or low-impact mixing of the fluid flow is achievable.

[0041] In an embodiment, the first fluid channel has a branch with a first branch, which in the first, second and third position of the valve element, in an embodiment in the first, second, third and fourth position of the valve element, communicates with the first inlet, a second branch, which in the first and third position of the valve element, in an embodiment in the first, third and fourth position of the valve element, communicates with the first outlet, and a third branch, which in the second and third position of the valve element, in an embodiment in the second, third and fourth position of the valve element, communicates with the second outlet.

[0042] Additionally or alternatively, in an embodiment, the outer surface of the valve element has a first recess, in an embodiment a slot-shaped first recess.

[0043] In an embodiment, the first recess in the third position, in an embodiment in the third and fourth position, at least partially intersects or overlaps with the two inlets, the two outlets or at least one inlet and at least one outlet, respectively.

[0044] In an embodiment, the first recess in the third position, in an embodiment in the third and fourth position, at least partially intersects or overlaps with the two inlets, the two outlets or at least one inlet and at least one outlet, respectively.

[0045] Additionally or alternatively, in an embodiment, the first recess is in communication with a second recess, in an embodiment a slot, via a through-going channel, which second recess itself in at least one, in an embodiment a further, position of the valve element interconnects the two inlets, the two outlets or at least one inlet and at least one outlet, respectively.

[0046] In an embodiment, the second recess in the at least one (further) position at least partially intersects or overlaps with the two inlets, the two outlets or at least one inlet and at least one outlet, respectively.

[0047] Additionally or alternatively, in an embodiment, at least one section of the outer surface of the valve element, in an embodiment a section of the opening, in particular the inlet opening, having the first branch and / or a section of the opening, in particular the outlet opening, having the second branch and / or a section of the opening, in particular the outlet opening, having the third branch and / or a section having the first recess and / or a section having the second recess is rotationally symmetrical, in an embodiment spherocylindrical.

[0048] Thereby, an advantageous, in an embodiment compact, reliable, well-adjustable and / or low flow resistance mixing valve can be realized, in particular by a combination of two or more of the aforementioned features.

[0049] In an embodiment, the two inlets are offset relative to each other in the rotational direction around the rotational axis of the valve element, in an embodiment by at least 45°, in an embodiment by at least 90°. In an embodiment, the inlets are arranged in one plane.

[0050] Additionally or alternatively, in an embodiment, the two outlets are offset relative to each other in the rotational direction around the rotational axis of the valve element, in an embodiment by at least 45°, in an embodiment by at least 90°. In an embodiment, the outlets are arranged in one plane.

[0051] Additionally or alternatively, in an embodiment, at least one of the inlets and at least one of the outlets are misaligned relative to each other in the rotational direction around the rotational axis of the valve element, in an improvement at least 45° misaligned, in an embodiment at least 90° misaligned. In an embodiment, the at least one inlet and the at least one outlet are arranged in one plane.

[0052] Additionally or alternatively, in an embodiment, the two inlets are misaligned relative to each other in the circumferential direction around a misalignment axis perpendicular to the rotational axis of the valve element, in an improvement at least 45° misaligned, in particular at least 60° misaligned, in an embodiment at least 85° misaligned.

[0053] Additionally or alternatively, in an embodiment, the two outlets are misaligned relative to each other in the circumferential direction around a misalignment axis perpendicular to the rotational axis of the valve element, in an improvement at least 45° misaligned, in particular at least 60° misaligned, in an embodiment at least 85° misaligned.

[0054] Additionally or alternatively, in an embodiment, at least one of the inlets and at least one of the outlets are misaligned relative to each other in the circumferential direction around a misalignment axis perpendicular to the rotational axis of the valve element, in an improvement at least 45° misaligned, in particular at least 60° misaligned, in an embodiment at least 85° misaligned.

[0055] Additionally or alternatively, in an embodiment, the (virtual or kinematic) rotational axis of the valve element passes through at least one of the inlets and / or at least one of the outlets.

[0056] Thereby, an advantageous, in an embodiment compact, reliable, well-adjustable and / or low-flow-resistance mixing valve can be realized accordingly, in particular by a combination of two or more of the aforementioned features.

[0057] The mixing valve can in particular be used advantageously for or in a heat medium circuit and / or a motor vehicle, in particular a passenger car, i.e. in particular for or in a motor vehicle heat medium circuit, but not limited thereto, based on structural, thermal, fluid-mechanical and / or control-technical boundary conditions.

[0058] According to an embodiment of the present application, therefore, a motor vehicle, in particular a passenger car, or a heat medium circuit has at least one mixing valve as described herein, a first sub-circuit connected to the first inlet and the first outlet of the mixing valve and a second sub-circuit connected to the second inlet and the second outlet of the mixing valve. In an embodiment, the motor vehicle has a heat medium circuit with the mixing valve.

[0059] Thus, in an embodiment, the first and second sub-circuits can be separated from each other, connected in series, or a portion of the heat transfer medium flowing from the first sub-circuit is branched from the first sub-circuit to the second sub-circuit, and a portion of the heat transfer medium flowing from the second sub-circuit is returned from the second sub-circuit to the first sub-circuit, in or by the mixing valve.

[0060] In an embodiment, "in communication" or "being in communication" means "flow-technically connected" or "flow-technically being connected". BRIEF DESCRIPTION OF DRAWINGS

[0061] Further advantages and features result from the dependent claims and embodiments. In this section, schematically shown are:

[0062] Figure 1 : in perspective view, a mixing valve according to an embodiment of the application;

[0063] Figure 2 : in perspective view, a valve element of the mixing valve;

[0064] Figure 3 : in perspective view, a partial cross-section of the valve element in a cut plane perpendicular to the plane of

[0065] Figure 4 : in perspective view, a partial cross-section of the valve element in a cut plane perpendicular to the plane of Figure 3 Fig. 5;

[0066] Figure 5A : in cross-section, the mixing valve along the line V-V in Figure 2 Fig. 4, including the valve element in a first position;

[0067] Figure 5B : in cross-section, the mixing valve along the line V-V in Figure 5A Fig. 5, including the valve element in a second position;

[0068] Figure 5C : in cross-section, the mixing valve along the line V-V in Figure 5A Fig. 6, including the valve element in a third position; Figure 5B

[0069] : in cross-section, the mixing valve along the line V-V in Figure 5D Fig. 7, including the valve element in a fourth position; Figures 5A-5C

[0070] : in cross-section, the mixing valve along the line V-V in Figure 5E Fig. 8, including the valve element in another position; and Figures 5A-5D

[0071] : in cross-section, the mixing valve along the line V-V in Figure 6 Fig. 9, including the valve element in a further position. DETAILED DESCRIPTION

[0072] Figure 1 A mixing valve according to an embodiment of the application is shown in perspective view.

[0073] The mixing valve comprises a housing 100 having a first inlet 11, a second inlet 12, a first outlet 21 and a second outlet 22, and a spherical valve element 200 rotatably arranged in the housing (see Fig. 5) and having first fluid passages 211-213 and second fluid passages 221-223.

[0074] The seals between the housing 100 and the valve element 200 are indicated with 300. In a not shown variant one or more of the seals 300 can also be omitted.

[0075] The first fluid passages 211-213 communicate the first inlet 11 with the first outlet 21 in a first position (see Fig. 6a) of the valve element, with the second outlet 22 in a second position (see Fig. 6b) of the valve element, and with the first outlet 21 and the second outlet 22 in a third position (see Fig. 6c) and a fourth position (see Fig. 6d) of the valve element, respectively. Figure 5A , Figure 6 (a)) of the valve element, with the second inlet 12 with the second outlet 22 in the first position of the valve element, with the first outlet 21 in the second position of the valve element, and with the first outlet 21 and the second outlet 22 in the third and fourth positions (see Fig. 7) of the valve element, respectively. Figure 5B , Figure 6 (b)) of the valve element, and with the first outlet 21 and the second outlet 22 in a third position (see Fig. 8c) and a fourth position (see Fig. 8d) of the valve element, respectively. Figure 5C , Figure 6 (c)) and a fourth position (see Fig. 8) of the valve element, respectively. Figure 5D

[0076] The second fluid passages 221-223 communicate the second inlet 12 with the second outlet 22 in the first position of the valve element, with the first outlet 21 in the second position of the valve element, and with the first outlet 21 and the second outlet 22 in the third and fourth positions (see Fig. 7) of the valve element, respectively. Figure 5D The first fluid passages have a branch with a first branch 211 communicating with the first inlet 11 in the first, second, third and fourth positions of the valve element, a second branch 212 communicating with the first outlet 21 in the first, third and fourth positions of the valve element and not communicating with the first outlet 21 in the second position of the valve element, and a third branch 213 communicating with the second outlet 22 in the second, third and fourth positions of the valve element and not communicating with the second outlet 22 in the first position of the valve element.

[0077]

[0078] ​​The outer surface of the valve element has a first notch 221 in the shape of a groove which, in the third and fourth positions of the valve element, interconnects the two outlets 21, 22 with one another, wherein the first notch 221 respectively intersects or overlaps the two outlets 21, 22.

[0079] The outer surface of the valve element has a second notch 222 in the shape of a groove. If the valve element is continued to be rotated in the anti-clockwise direction from its second position shown in Figure 5B , the second notch 222 in some of the further positions resulting therefrom (not shown) interconnects the second inlet 12 and the second outlet 22 or the two outlets 21, 22 and there is again a varying minimum flowable cross section between these inlets and outlets, wherein the second notch 222 subsequently intersects or overlaps the second inlet 12 and the second outlet 22 respectively.

[0080] A curved through passage 223 interconnects the first notch 221 and the second notch 222.

[0081] The second inlet 12 and the second outlet 22 and the second outlet 22 and the first outlet 21 are respectively displaced relative to one another in the direction of rotation around the axis of rotation D of the valve element by at least 90° and are arranged in a common plane, said axis of rotation being perpendicular to the drawing plane of Figure 5.

[0082] The first inlet 11 and the second inlet 12, the first inlet 11 and the first outlet 21 and the first inlet 11 and the second outlet 22 are respectively displaced relative to one another in the direction of encircling around an axis of displacement perpendicular to the axis of rotation D of the valve element by 90°, wherein the axis of rotation D of the valve element passes through the first inlet 11 which is hidden by the valve element 200 in Figure 5 or is below or behind the drawing plane of Figure 5.

[0083] In the third position of the valve element (see Figure 5C ), the minimum flowable cross section between the first inlet 11 and the first outlet 21 is smaller than the minimum flowable cross section in the first position of the valve element (see Figure 5A ) and the minimum flowable cross section between the first inlet 11 and the second outlet 22 is smaller than the minimum flowable cross section in the second position of the valve element (see Figure 5B ).

[0084] In the third position of the valve element (see Figure 5C ), the minimum flowable cross section between the second inlet 12 and the second outlet 22 is smaller than the minimum flowable cross section in the first position of the valve element (see Figure 5A ) and the minimum flowable cross section between the second inlet 12 and the first outlet 11 in the third position of the valve element is smaller than the minimum flowable cross section in the second position of the valve element (see Figure 5B ).

[0085] In a fourth position (see Figure 5D ) of the valve element, the smallest flow-through cross section between the first inlet 11 and the first outlet 21 is smaller than in the first and third position of the valve element, the smallest flow-through cross section between the first inlet 11 and the second outlet 22 is smaller than in the second position of the valve element and larger than in the third position of the valve element, the smallest flow-through cross section between the second inlet 12 and the second outlet 22 is smaller than in the first and third position of the valve element, and the smallest flow-through cross section between the second inlet 12 and the first outlet 21 is smaller than in the second position of the valve element and larger than in the third position of the valve element.

[0086] Figure 5E Another position of the valve element is shown in the view corresponding to Figures 5A-5D .

[0087] In said another position, the first fluid channel 211-213 communicates the first inlet 11 only with the second outlet 22, and the second fluid channel 221-223 communicates the second inlet 12 with the first outlet 21 and the second outlet 22.

[0088] In particular as shown in Figures 5A-5E , the valve element can be continuously adjusted and here in particular through the positions shown here.

[0089] In Figure 6 (a), a heat transfer medium circuit is drawn, which has a mixing valve, a first sub-circuit 1000 connected to the first inlet 11 and the first outlet 21 of the mixing valve, and a second sub-circuit 2000 connected to the second inlet 12 and the second outlet 22 of the mixing valve. Furthermore, for the purpose of illustrating the functional principle in Figure 6 , the flow situation of the heat transfer medium in or through the mixing valve is shown.

[0090] Although exemplary embodiments have been described in the foregoing description, it is to be understood that many modifications can be made. Additionally, it is to be understood that the examples are only illustrative and are not to be used as limiting in any way. Rather, the only limitation is imposed by the appended claims and equivalents thereof. Various embodiments and variations of the described embodiments can be practiced without departing from the spirit or scope of the claimed subject matter.

[0091] List of reference signs:

[0092] 11 first inlet

[0093] 12 second inlet

[0094] 21 first outlet

[0095] 22 second outlet

[0096] 100 housing

[0097] 200 valve element

[0098] 211 first branch

[0099] 212 second branch

[0100] 213 third branch

[0101] 221 first recess

[0102] 222 second recess

[0103] 223 through passage

[0104] 300 seal

[0105] 1000 first sub-circuit

[0106] 2000 second sub-circuit

[0107] D axis of rotation

Claims

1. A mixing valve for a heat transfer medium circuit and / or a motor vehicle, wherein The mixing valve comprises: a housing (100) having a first inlet (11); a second inlet (12); a first outlet (21); and a second outlet (22); The mixing valve further comprises a valve element (200) adjustably arranged at least partially in the housing (100), the valve element having a first fluid passage (211-213) which in a first position of the valve element communicates the first inlet (11) with the first outlet (21); in a second position of the valve element communicates the first inlet (11) with the second outlet (22); in a third position of the valve element communicates the first inlet (11) with the first outlet (21) and the second outlet (22); the valve element having a second fluid passage (221-223) which in the first position of the valve element communicates the second inlet (12) with the second outlet (22); in the second position of the valve element communicates the second inlet (12) with the first outlet (21); in the third position of the valve element communicates the second inlet (12) with the first outlet (21) and the second outlet (22); the first fluid passage having a branch with a first branch (211) which in the first, second and third position of the valve element communicates with the first inlet, a second branch (212) which in the first and third position of the valve element communicates with the first outlet, and a third branch (213) which in the second and third position of the valve element communicates with the second outlet.

2. The mixing valve according to claim 1, wherein - the smallest flowable cross section between the first inlet and the first outlet is smaller in the third position of the valve element than in the first position of the valve element; - the smallest flowable cross section between the first inlet and the second outlet is smaller in the third position of the valve element than in the second position of the valve element; - the smallest flowable cross section between the second inlet and the second outlet is smaller in the third position of the valve element than in the first position of the valve element; and / or - the smallest flowable cross section between the second inlet and the first outlet is smaller in the third position of the valve element than in the second position of the valve element.

3. The mixing valve of claim 1, wherein in a fourth position of the valve element the first fluid passage communicates the first inlet with the first outlet the second outlet and the second fluid passage communicates the second inlet with the first outlet and the second outlet, wherein - the smallest flowable cross section between the first inlet and the first outlet is smaller in the fourth position of the valve element than in the first and third position of the valve element; - the smallest flowable cross section between the first inlet and the second outlet is smaller in the fourth position of the valve element than in the second position of the valve element, but larger than in the third position of the valve element; - the smallest flowable cross section between the second inlet and the second outlet is smaller in the fourth position of the valve element than in the first and third position of the valve element; and / or - the smallest flowable cross section between the second inlet and the first outlet is smaller in the fourth position of the valve element than in the second position of the valve element, but larger than in the third position of the valve element.

4. The mixing valve according to claim 3, characterized in that - in a further position of the valve element, the first fluid channel communicates the first inlet only with the first outlet, and the second fluid channel communicates the second inlet with the first outlet and the second outlet; and / or - in a further position of the valve element, the first fluid channel communicates the first inlet only with the second outlet, and the second fluid channel communicates the second inlet with the first outlet and the second outlet; and / or - in a further position of the valve element, the first fluid channel communicates the first inlet with the first outlet and the second outlet, and the second fluid channel communicates the second inlet only with the first outlet; and / or - in a further position of the valve element, the first fluid channel communicates the first inlet with the first outlet and the second outlet, and the second fluid channel communicates the second inlet only with the second outlet.

5. The mixing valve of claim 1, wherein The valve element can be adjusted steplessly.

6. The mixing valve of claim 1, wherein The first branch communicates with the first inlet in the first, second, third and fourth position of the valve element, the second branch communicates with the first outlet in the first, third and fourth position of the valve element, and the third branch communicates with the second outlet in the second, third and fourth position of the valve element.

7. The mixing valve of claim 1, wherein The outer surface of the valve element has a first recess (221) which is: - in the third position of the valve element, communicates the two inlets with each other, the two outlets with each other, or at least one of the inlets and at least one of the outlets with each other; and / or - in communication with a second recess (222) which, in at least one position of the valve element, communicates the two inlets with each other, the two outlets with each other, or at least one of the inlets and at least one of the outlets with each other, by means of a through channel (223).

8. The mixing valve of claim 1, wherein At least one section of the outer surface of the valve element is rotationally symmetrical.

9. The mixing valve of claim 1, wherein The two inlets, the two outlets and / or at least one of the inlets and at least one of the outlets are respectively displaced relative to each other in a rotational direction around an axis of rotation (D) of the valve element, and / or the two inlets, the two outlets and / or at least one of the inlets and at least one of the outlets are displaced relative to each other in a circumferential direction around an axis of displacement perpendicular to the axis of rotation (D) of the valve element.

10. The mixing valve of claim 7, wherein The first recess communicates the two inlets with each other, the two outlets with each other, or at least one of the inlets and at least one of the outlets with each other in the third and fourth position of the valve element.

11. The mixing valve of claim 8, wherein The sections of the outer surface of the valve element having an opening with the first branch (211), having an opening with the second branch (212), having an opening with the third branch (213), having the first recess (221) and / or having the second recess (222) are rotationally symmetrical.

12. The mixing valve of claim 9, wherein two inlets, two outlets and / or at least one of the inlets and at least one of the outlets are offset in a rotational direction around the rotational axis (D) of the valve element relative to each other by at least 45° and are arranged in one plane, and / or two inlets, two outlets and / or at least one of the inlets and at least one of the outlets are offset in a circumferential direction around an axis of offset perpendicular to the rotational axis (D) of the valve element relative to each other by at least 45°, and the rotational axis (D) of the valve element passes through at least one of the inlets and / or at least one of the outlets.

13. Heat transfer medium circuit for a motor vehicle, having a mixing valve according to any one of the preceding claims, a first sub-circuit (1000) connected to the first inlet and the first outlet of the mixing valve and a second sub-circuit (2000) connected to the second inlet and the second outlet of the mixing valve.

14. Motor vehicle having a mixing valve according to any one of the preceding claims 1 to 12.

15. A method for selectively communicating an inlet and an outlet of a mixing valve according to any one of the preceding claims 1 to 12, characterized in that, adjusting the valve element (200) of the mixing valve into the first position, the second position and the third position.

16. The method of claim 15, wherein, adjusting the valve element (200) of the mixing valve into the fourth position.

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