Cooling liquid compensation vessel having an integrated vortex chamber spaced apart from the vessel wall along its entire circumference

Abstract

The present invention relates to a cooling liquid compensation container (10) for being arranged in a cooling liquid circulation loop, comprising: a container shell (12); a vortex chamber (42) in the container shell (12); a delivery pipeline (40) for introducing cooling liquid into the container shell (12), and an outflow opening (58) for discharging cooling liquid from the container shell (12), wherein the delivery pipeline (40) leads to the vortex chamber (42). According to the present invention, the vortex chamber (42) is defined by a wall (44) extending from a wall base section (44c) of the container shell (12) along the vortex chamber axis (W) and surrounding the vortex chamber axis (W) in a closed manner, and the wall is arranged to be spaced apart from the container shell (12) in each direction orthogonal to the vortex chamber axis (W).

Description

Technical Field

[0001] The invention relates to a cooling liquid compensation container for arrangement in a cooling liquid circuit, in particular in a motor vehicle, comprising:

[0002] - a container shell,

[0003] - a vortex chamber in the container housing,

[0004] - a supply line for introducing cooling liquid into the container shell, and

[0005] - an outflow opening for conducting cooling liquid out of the container housing,

[0006] The delivery pipeline leads into the vortex chamber. Background Art

[0007] Such a cooling liquid compensation tank, also referred to hereinafter as "compensation tank", is known from DE 100 50 852 A1. Like the compensation tank of the present application, the known compensation tank is also suitable and intended for arrangement in a cooling liquid circuit of a motor vehicle, referred to hereinafter as "cooling circuit".

[0008] Such compensation vessels in cooling circuits usually fulfill two tasks: On the one hand, they provide a compensation volume in order to accommodate the increased volume of the cooling liquid circulating in the cooling circuit caused by the increase in temperature. On the other hand, the compensation vessel is usually used to degas the cooling liquid via so-called eddy chambers, which is advantageous for avoiding undesirable cavitation at conveying devices for conveying the cooling liquid in the cooling circuit, such as at pump edges and valves.

[0009] Known cooling circuits with a compensating tank for motor vehicles with an internal combustion engine are operated with a volume flow of approximately 5 l / min. Surprisingly, battery-powered electric vehicles require higher absolute cooling liquid flows of 10 l / min or even 12 l / min or more for cooling their heated vehicle components. As the volume flow of the cooling liquid increases, its degassing becomes more difficult, which, given a predetermined holding volume of the compensating tank, can be associated with an increasingly shorter residence time of the cooling liquid in the compensating tank.

[0010] Numerous other compensating containers are known from the prior art. With certain relevance to the present application, reference is additionally made to the compensating container of DE 10 2008 060 088 B4.

[0011] In two known compensating containers with an integrated eddy chamber in the compensating container, in order to realize potential savings in material and production costs, a part of the eddy chamber wall which delimits the eddy flow occurring in the eddy chamber radially on the outside is simultaneously a part of the container wall. Furthermore, it is known from DE 100 50 852 A1 to divide the area within the container housing but outside the eddy chamber into a plurality of chambers separated from one another, wherein the separating walls separating the chambers from one another have connecting openings through which cooling liquid can flow from one chamber to an adjacent chamber on the other side of the separating wall. Summary of the invention

[0012] The object of the present invention is to improve the compensation container mentioned at the outset so that it can effectively realize the thermally caused expansion of the cooling liquid and its degassing without increasing the installation space at higher volume flows of cooling liquid of more than 10 l / min or even more than 12 l / min.

[0013] The invention achieves the above object with respect to the compensating container mentioned at the outset in that the vortex chamber is defined by a wall which extends from a wall base section of the container shell along the vortex chamber axis and which surrounds the vortex chamber axis in a closed manner, the wall being arranged at a distance from the container shell in each direction orthogonal to the vortex chamber axis.

[0014] In principle, the vortex chamber into which the cooling liquid is introduced can have an approximately arbitrary configuration. In order to achieve a flow with as little turbulence as possible after the cooling liquid is introduced into the vortex chamber, the wall of the vortex chamber that surrounds the vortex chamber axis in a closed manner has a non-bending, concavely curved inner surface. Preferably, the inner surface of the wall does not have a flow obstacle, such as a tab or impact surface protruding from the inner surface, and the flow obstacle protrudes from the wall toward the vortex chamber axis. The vortex chamber can have a spherical or spherical inner surface. Preferably, the vortex chamber has a cylindrical or elliptical cylindrical inner surface. It is also not ruled out that different inner surface configurations are combined in different regions of the wall of the vortex chamber, such as when a wall section with a spherical inner surface is connected to the cylindrical inner wall surface in the region of the cylindrical end side.

[0015] The vortex chamber of the compensation container of the present invention may also have a wall section formed together with the container housing wall, for example, at the wall base section, for forming an inner wall surface that delimits the vortex chamber and is oriented transversely to the vortex chamber axis. If there is only one vortex chamber axis, the vortex chamber may have a cylindrical, conical or generally tapered or / and widened chamber configuration along the vortex chamber axis section. The inner surface of the wall of the vortex chamber has a section line that surrounds the vortex chamber axis in a closed manner in a section plane orthogonal to the vortex chamber axis. The section line is preferably a circle, wherein, however, an elliptical or oval section line should not be excluded.

[0016] By introducing the cooling liquid into the vortex chamber, the cooling liquid flows along the inner wall surface of the vortex chamber, usually in a vortex, as is already known from the prior art, and is degassed in the process. By forming the vortex chamber wall orthogonally to the vortex chamber axis and spaced apart from the container housing, i.e., the container wall, the flow path of the cooling liquid in the compensation container but outside the vortex chamber is long. As a result, the residence time of the cooling liquid in the compensation container is increased, thereby improving the degassing result.

[0017] By means of the above-mentioned configuration in which the vortex chamber is spaced apart from the container housing, the vortex chamber can be accommodated in the container housing in such a way that the cooling liquid circulates completely around the vortex chamber on its outer side in the circumferential direction. By means of the possibility that the cooling liquid circulates around the vortex chamber on its outer side after leaving the vortex chamber, but still inside the container housing, thereby generating an annular flow outside the vortex chamber in addition to the vortex flow in the vortex chamber, the residence time of the cooling liquid in the compensation container can be further increased, so that the cooling liquid is degassed over a longer time and thus with greater effectiveness despite the large volume flow values.

[0018] In principle, the wall base section, from which the wall delimiting the vortex chamber protrudes, can be any wall section of the container housing, for example a side wall of the container or a section of the container top or container bottom. Preferably, the wall base section is a section of the container bottom or a section of the container top opposite to the container bottom, so that the vortex chamber axis extends substantially parallel to the direction of gravity in the fully installed, operationally ready state or at least in the following cone, the cone having a half cone angle of 10° around the cone axis parallel to the direction of gravity, the cone axis intersecting the vortex chamber axis. Then, the cooling liquid flow introduced into the vortex chamber can advantageously surround the vortex chamber axis with a vortex flow at the side wall of the vortex chamber, wherein gravity has substantially the same effect on the flowing liquid along the vortex flow at each circumferential position. If the vortex chamber axis is too strongly inclined relative to the direction of gravity, then undesirable flow separation occurs at the upper vertex of the vortex flow that exists around the vortex chamber axis.

[0019] In order that the cooling liquid introduced into the vortex chamber can also reach areas located outside the vortex chamber, but still within the container housing, the wall of the vortex chamber preferably has at least one through-opening, which passes completely through the wall in the thickness direction. The through-opening is preferably formed at a position that is geodesically as deep as possible when the compensating container is ready for operation, so that the cooling liquid can be introduced into the vortex chamber at a position that is geodesically as high as possible, so that the cooling liquid travels as long as possible within the vortex chamber before it reaches the through-opening. Preferably, the through-opening is arranged so that a section of it is delimited by the container bottom.

[0020] In contrast to the above, the opening of the supply line into the vortex chamber is at the same height as the at least one through-opening. This is possible in particular at high volume flows of 12 l / min or more, for example more than 20 l / min or more than 30 l / min. Thus, the opening of the supply line can also be located at a geodesically deep, in particular geodesically deepest, position of the vortex chamber. Due to the high volume flow, the introduced cooling liquid can then rise from the geodesically deep opening, thereby extending its flow path and thus its residence time.

[0021] In principle, a single through-opening in the wall of the vortex chamber may be sufficient. In order to ensure that a large volume flow of cooling liquid can safely reach the area between the vortex chamber and the container housing from the vortex chamber, the wall of the vortex chamber may have a plurality of through-openings, each of which completely penetrates the wall in the thickness direction. At least two of the through-openings can be arranged at different circumferential positions in the circumferential direction around the axis of the vortex chamber. Additionally or alternatively, at least two of the through-openings can be arranged at different positions in the direction along the axis of the vortex chamber. Additionally or alternatively, at least two through-openings can have different configurations, such as circular and elliptical or rounded and polygonal, or / and opening cross-sectional areas of different values.

[0022] In order to improve the flow of the cooling liquid in the vortex chamber, a guide plate may be provided inside the vortex chamber. In order to achieve the cooling liquid flow that follows the inner wall surface, i.e., the inner surface of the wall of the vortex chamber as much as possible, the guide plate may extend parallel to the inner wall surface of the vortex chamber and spaced apart from the inner wall surface. Preferably, the guide plate extends around the axis of the vortex chamber only around the circumferential section, but not completely closed. Therefore, if the vortex chamber is a cylindrical vortex chamber, the guide plate is preferably a partially cylindrical guide plate. Preferably, the guide plate protrudes from the same wall base section as the wall of the vortex chamber along the axis of the vortex chamber. Preferably, the guide plate is bent around the axis of the vortex chamber or around a bending axis parallel to the axis of the vortex chamber.

[0023] Likewise, the guide plate preferably extends into the vortex chamber in the region of the flow inflow, i.e. approximately along the vortex chamber axis in the common axial region with the opening of the delivery line. Since the guide plate should preferably influence the course of the cooling liquid flow in its inflow region into the vortex chamber, it is sufficient if the guide plate extends only over a portion of the axial dimension of the vortex chamber relative to the vortex chamber axis. Preferably, the guide plate is completely located in the container hood that carries it, which is preferably injection-molded, as explained in more detail further below.

[0024] In order to accelerate or decelerate the cooling liquid in the vortex chamber, the gap distance between the inner surface of the wall of the vortex chamber and the surface of the guide plate facing it can be reduced or increased along the gap formed by the inner surface of the wall of the vortex chamber and the surface of the guide plate facing it, for example, along the circumferential direction around the vortex chamber axis and / or around the bending axis of the guide plate parallel to the vortex chamber axis.

[0025] In principle, it is sufficient that the vortex chamber extends only over a portion of the space provided along the vortex chamber axis in the interior of the container housing. For a flow path that is as long as possible within the vortex chamber, it is however advantageous that the vortex chamber extends from the wall base section of the container housing along the vortex chamber axis to the wall end section of the container housing opposite the wall base section. Therefore, preferably, the vortex chamber extends from the bottom of the container to the opposite container top. Similarly, the guide plate, if present, is preferably formed only in the lower container cover or only in the upper container cover. For the reasons mentioned above, the guide plate, if present, is preferably formed in a container cover as follows, which also shows the opening of the conveying line into the vortex chamber.

[0026] The compensating container can advantageously be formed in an injection molding process and comprises, for example, an upper and a lower container hood. Preferably, the lower container hood comprises the container bottom and a part of the container side wall, and the upper container hood comprises the container top and a part of the container side wall. In this preferred case, each container hood comprises a part of the vortex chamber, wherein preferably the corresponding part of the vortex chamber is formed integrally with the container hood having it.

[0027] In principle, the area outside the vortex chamber but inside the container shell may not have flow obstacles. However, preferably, the area inside the container shell but outside the vortex chamber is divided into a plurality of cavities that are connected to each other. In the prior art, such a cavity is called an expansion cavity because it is more strongly used to accommodate the increased volume caused by the temperature of the cooling liquid than the vortex chamber through which the flow passes. The cavities are in principle separated from each other by a separation wall, wherein the area inside the container shell but outside the vortex chamber should be configured so that the flow outside the vortex chamber in the circumferential direction around the axis of the vortex chamber is feasible. The flow in the circumferential direction can, but does not have to, surround the vortex chamber in a completely closed manner. For the purpose, the separation wall separating two adjacent cavities from each other can have a connecting opening, through which the cooling liquid can flow from one of the cavities to another adjacent cavity respectively.

[0028] All the separating walls can each have at least one connecting opening, so that the cooling liquid can circulate the vortex chamber multiple times in an annular flow form on the outside. Alternatively, at least one separating wall can have no connecting opening, in particular the inner area around the delivery side and / or the delivery line is physically separated from the outflow opening. The separating wall without connecting opening preferably extends between the container housing and the vortex chamber in a surface-covering manner, so as to achieve a complete physical interruption of the space around the vortex chamber on the outside.

[0029] In order to promote the degassing of the cooling liquid, the connecting openings of at least two separating walls can be arranged at different distances from the vortex chamber or / and at different positions in the direction along the axis of the vortex chamber. As a result, the cooling liquid flow flowing around the vortex chamber on the outside can be superimposed with the radial or / and axial flow about the axis of the vortex chamber. The cooling liquid flow can therefore, for example, approach the wall of the container shell from the vortex chamber in a spiral or helical shape, especially the side wall, or the cooling liquid flow flowing around the vortex chamber outside the vortex chamber can, for example, approach the vortex chamber and the wall of the container shell in a superimposed swinging motion. In addition or alternatively to the different setting positions of the connecting opening, the connecting opening can have different configurations or / and opening cross-sectional areas with different values, for example, in order to change the flow velocity in a targeted manner. This further supports degassing.

[0030] Preferably, the planar separating wall, wherein for each planar separating wall it is applicable that its thickness dimension is significantly shorter than its main physical extension directions relative to one another and orthogonal to the respective local thickness direction, extends in at least one of its main physical extension directions parallel to the vortex chamber axis. Although this need not necessarily be the case, the design of a planar separating wall is still preferred.

[0031] In principle, it is conceivable that the separating wall extends along the vortex chamber axis only over a portion of the corresponding dimension of the vortex chamber. In order to carefully degas the cooling liquid with the large volume flow mentioned at the beginning, it is preferred that the separating wall separating two adjacent chambers extends from the container bottom to the container top opposite the container bottom.

[0032] The partition wall is also preferably formed in one piece with the container hood which in each case carries it in the injection molding method.

[0033] In order to realize the cooling liquid flow with the longest possible flow path in the container housing, the outflow opening is preferably formed in the container housing outside the vortex chamber. Therefore, the cooling liquid must flow from the inside of the vortex chamber to the external environment of the vortex chamber in the container housing.

[0034] The present application also relates to a motor vehicle, in particular a hybrid electric drive or a fully electric drive, comprising a cooling circuit with a cooling liquid compensation tank configured according to the above description. The cooling circuit comprises a pump device for generating a cooling liquid flow in the cooling circuit, wherein the pump device is configured to generate a volume flow of cooling liquid of at least 12 l / min, preferably at least 25 l / min, more preferably at least 35 l / min in a normal cooling operation in accordance with regulations. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention is explained in detail below with reference to the attached drawings. The drawings show:

[0036] Figure 1 shows a section through a compensating container according to the invention along a section axis parallel to the vortex chamber axis,

[0037] Figure 2 Show Figure 1 A top view of the inner side of the container hood of the lower part of the compensation container, and

[0038] Figure 3 Show Figure 2 A perspective view of the interior area of ​​the lower container cover. DETAILED DESCRIPTION

[0039] exist Figure 1 In the drawings, one embodiment of a cooling liquid compensation tank according to the invention is generally designated by 10. The compensation tank 10 has a tank housing 12 and is formed by an upper tank hood 14 and a lower tank hood 16.

[0040] The upper container cap 14 comprises a container top 18 and a closed, circumferential upper side wall 20 which projects in one piece from the container top 18 as a section of the container housing 12 .

[0041] The lower tank hood 16 comprises a tank bottom 22 which is opposite the tank top 18 in the operationally ready state of the compensating tank 10 and a closed, circumferential lower side wall 24 which projects in one piece from the tank bottom 22 as a section of the tank housing 12. The upper and lower tank hoods 14 and 16 are connected to one another along a joining plane 26, in particular welded, for example by mirror welding or by another suitable welding method.

[0042] Functional means, such as holders 28 , 30 and 32 , are integrally formed on the outer sides of the tank hoods 14 and 16 for fastening the compensating tank 10 to a surrounding structure, in particular a structure of the vehicle V. A further functional means is, in the example shown, a sensor holder 34 extending through the upper tank hood 14 and holding a sensor device 36 for detecting an operating state of the compensating tank 10 and / or a property of the cooling liquid flowing through the compensating tank 10 .

[0043] In the region of the tank bottom 22, at the lower tank hood 14, a pipe 38, which is formed integrally with the lower tank hood 14, introduces cooling liquid into the compensation tank 10 as part of a delivery line 40. In the example shown, the pipe 38 and the delivery line 40 advantageously extend along a rectilinear delivery axis Z, which theoretically passes through the pipe 38 and the delivery line 40 centrally. The delivery line 40 is part of a cooling liquid circuit or a cooling circuit 41 in the motor vehicle V. The cooling circuit 41 comprises a pump 39, which, during operation of the cooling circuit 41, generates a volume flow of cooling liquid of between 30 l / min and 50 l / min.

[0044] The two container caps 14 and 16 are produced from a thermoplastic, preferably polyurethane or polypropylene, in an injection molding process.

[0045] The compensating container 10 is Figure 1 The arrow g indicates the direction of gravity. The direction of gravity is parallel to Figure 1 The drawing plane is perpendicular to Figure 2 The drawing plane is stretched.

[0046] A cylindrical vortex chamber 42 is formed inside the compensating container 10, which extends continuously from the container bottom 22 to the container top 18. As an aid to a simplified description of the interior area of ​​the compensating container 10, a virtual vortex chamber axis W is shown, which theoretically passes through the vortex chamber 42 in the center. Due to the cylindrical configuration of the vortex chamber 42, the virtual vortex chamber axis W coincides with the cylindrical axis of the vortex chamber 42.

[0047] The wall 44 of the vortex chamber 42 is currently formed in two parts in approximately the same parts in the upper container hood 14 and in the lower container hood 16. The upper vortex chamber wall 44a formed in one piece with the upper container hood 14 and the lower vortex chamber wall 44b formed in one piece with the lower container hood 16 intersect in the joint plane 26 and are welded to each other there to form the wall 44 of the vortex chamber 42.

[0048] The delivery line 40 passes through the lower side wall 24 and opens into the vortex chamber 42 at the inlet opening 46. The cooling liquid introduced into the vortex chamber 42 eccentrically with respect to the vortex chamber axis W via the inlet opening 46 is observed. Figure 2 The liquid flows into the vortex chamber 42 and turns into a counterclockwise oriented vortex flow after impacting the inner surface of the wall 44.

[0049] The vortex chamber 42 extends with its lower vortex chamber wall 44 b away from a wall base section 44 c formed by a section of the container bottom 22 toward a wall end section 44 d.

[0050] The guide plate 48 also extends along the vortex chamber axis W away from the wall base section 44c. The guide plate 48 extends at a distance from the lower vortex chamber wall 44b orthogonal to the vortex chamber axis W. The guide plate 48, which is bent around a bending axis parallel to the vortex chamber axis W, does not reach the joint plane 26 in the example shown, but terminates at a distance therefrom. However, the guide plate 48 extends along the vortex chamber axis W so that its longitudinal end away from the container bottom 22 is closer to the joint plane 26 than the container bottom 22.

[0051] Although the guide plate 48 is bent around the vortex chamber axis W, it only extends incompletely around the vortex chamber axis W and does not extend around it in a closed manner. The angle of rotation of the guide plate 48 around the axis P about the center of the guide plate 48 (see Figure 2 ) is approximately 180°, and the central axis may be different from the vortex chamber axis W in the illustrated embodiment.

[0052] As in Figure 2 and 3 As can be seen in the example shown, the guide plate 48 is substantially partially cylindrical, wherein the cylindrical axis P of the guide plate 48 (see Figure 2 ) is spaced apart from the vortex chamber axis W, so that the spacing between the guide plate 48 and the lower vortex chamber wall 44b opposite thereto extends along the circumference of the two mechanisms. Figure 2 The inlet opening 46 of the delivery line 40 points to the area between the guide plate 48 and the lower vortex chamber wall 44b where the spacing is larger. The cooling liquid introduced into the gap 49 between the guide plate 48 and the lower vortex chamber wall 44b is therefore observed. Figure 2 The fluid flows counterclockwise along the gap 49 and is accelerated by the gap size of the gap 49 which decreases along the flow path.

[0053] Through the plurality of through-openings 50 , cooling liquid can flow from the vortex chamber 42 into the environment outside the vortex chamber 42 between the wall 44 of the vortex chamber 42 and the container housing 12 . Figure 1 Only one through-opening 50 is visible. Figure 3 Two through-openings 50 are shown.

[0054] An expansion chamber 52 is formed outside the vortex chamber 42, in which two directly adjacent expansion chambers 52 are separated from each other by a planar separating wall 54. The separating wall 54 extends completely between the container bottom 22 and the container top 18. Like the wall 44 of the vortex chamber 42, each separating wall 54 is formed in the illustrated embodiment by an upper separating wall 54a and a lower separating wall 54b, which are in contact with each other in the joint plane 26 and are preferably connected to each other, particularly preferably by material bonding. Since the two container hoods 14 and 16 are manufactured by injection molding, the upper and lower separating walls 54a or 54b are formed in one piece with the container housing 12, that is, with the housing cover 18, the housing bottom 22 and the side walls 20 and 24 in the illustrated example.

[0055] In each separation wall 54, except for the separation wall 54b' between the conveying pipeline 40 and its lower part, Figure 2 and 3 In addition to the separation wall between the outflow openings 58 visible in the figure, communication openings 56 are respectively formed, and the coolant can flow from one side of the separation wall 54 to the other side of the separation wall 54 through the communication openings.

[0056] The vortex chamber 42 is configured to be spaced apart from the container housing 12 in each (radial) direction orthogonal to the vortex chamber axis W. Through the communication opening 56, a flow of cooling liquid in a circumferential direction around the vortex chamber axis W is possible.

[0057] exist Figure 2 and 3 , through which the cooling liquid can flow out of the compensation container 10. The outflow opening 58 opens directly into the expansion space 52', so that the cooling liquid must flow from the vortex space 42 into the expansion space 52' having the outflow opening 58 in order to be able to leave the compensation container 10 again.

[0058] In order to increase the flow path and thus the residence time of the cooling liquid in the compensation container 10, the vortex chamber 42 does not have the following through-openings 50, which open into the expansion chamber 52' ​​having the outflow opening 58 and into the expansion chamber 52" adjacent to the expansion chamber 52' ​​in the opposite direction to the vortex direction of the cooling liquid in the vortex chamber 42. The vortex chamber 42, however, each has a through-opening 50 into the remaining expansion chambers 52 adjacent to the vortex chamber 42.

[0059] The partition wall 54 between the outflow opening 58 and the delivery line 40 has no communication opening 56. It extends completely over the entire cross section of the interior space between the vortex chamber 42 and the container housing 12. All other partition walls 54 each have a communication opening 56. Thus, with the exception of the directly adjacent expansion chamber 52 through which the delivery line 40 extends and the expansion chamber 52 ′ in which the outflow opening 58 is arranged, all expansion chambers 52 are connected to one another.

Claims

1. A cooling liquid compensation container (10) for being arranged in a cooling liquid circulation loop (41), comprising: - a container housing (12); - a vortex chamber (42) in the container housing (12); - a delivery line (40) for introducing cooling liquid into the container housing (12); and - an outflow opening (58) for conducting cooling liquid out of the container housing (12), The delivery pipeline (40) leads to the vortex chamber (42). The vortex chamber (42) is defined by a wall (44), the wall extending from a wall base section (44c) of the container shell (12) along the vortex chamber axis (W) and surrounding the vortex chamber axis (W) in a closed manner, and the wall is arranged to be spaced apart from the container shell (12) in each direction orthogonal to the vortex chamber axis (W), A guide plate (48) is arranged inside the vortex chamber (42), and the guide plate extends only around a circumferential section but not completely around the axis of the vortex chamber. wherein a gap is formed between the inner surface of the wall of the vortex chamber and the surface of the guide plate facing the wall of the vortex chamber, the gap having a gap spacing along the flow path of the cooling liquid in the gap, and The gap spacing becomes smaller or larger along the circumferential direction around the axis of the vortex chamber, so as to accelerate or decelerate the cooling liquid in the vortex chamber.

2. The cooling liquid compensation container (10) according to claim 1, It is characterized in that The vortex chamber (42) is completely accommodated with its outer side in the circumferential direction in the container housing (12) so that cooling liquid can flow around.

3. The cooling liquid compensation container (10) according to claim 2, It is characterized in that The wall (44) of the vortex chamber (42) has at least one through-opening (50), which completely penetrates the wall (44) in the thickness direction.

4. The cooling liquid compensation container (10) according to claim 3, It is characterized in that The wall (44) of the vortex chamber (42) has a plurality of through openings (50), which completely penetrate the wall (44) in the thickness direction, wherein at least two of the through openings (50) are arranged at different circumferential positions in the circumferential direction around the axis (W) of the vortex chamber or / and are arranged at different positions in the direction along the axis (W) of the vortex chamber or / and have different configurations or / and different opening cross-sectional areas.

5. The cooling liquid compensation container (10) according to any one of claims 1 to 4, It is characterized in that The guide plate (48) extends parallel to the inner wall surface of the vortex chamber (42) and is spaced apart therefrom.

6. The cooling liquid compensation container (10) according to any one of claims 1 to 4, It is characterized in that The vortex chamber (42) extends from a wall base section (44c) of the container shell (12) along the vortex chamber axis (W) to a wall end section (44d) of the container shell (12) opposite the wall base section (44c).

7. The cooling liquid compensation container (10) according to any one of claims 1 to 4, It is characterized in that A region within the container housing (12) but outside the vortex chamber (42) is divided into a plurality of chambers (52, 52', 52") that are interconnected.

8. The cooling liquid compensation container (10) according to claim 7, It is characterized in that A separation wall (54) separating two adjacent chambers (52, 52', 52") from each other has a connecting opening (56), through which cooling liquid can flow from one of the chambers (52, 52', 52") to the other chamber, wherein the connecting openings (56) of at least two separation walls (54) are arranged at different intervals from the vortex chamber (42) or / and are arranged at different positions in the direction along the vortex chamber axis (W) or / and have different configurations or / and different opening cross-sectional areas.

9. The cooling liquid compensation container (10) according to claim 7, It is characterized in that A separation wall (54) separating two adjacent chambers (52, 52', 52") from one another extends from a container bottom (22) to a container top (18) opposite the container bottom (22).

10. The cooling liquid compensation container (10) according to any one of claims 1 to 4, It is characterized in that The outflow opening (58) is formed outside the vortex chamber (42) in the container housing (12).

11. A motor vehicle (V) having a cooling liquid circuit (41) with a cooling liquid compensation tank (10) according to any one of claims 1 to 10, It is characterized in that The cooling liquid circulation loop (41) comprises a pump (39) which is designed to achieve a cooling liquid flow of more than 12 l / min.

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