WO2002084188A1

WO2002084188A1 - Beverage cooling device

Info

Publication number: WO2002084188A1
Application number: PCT/EP2002/004117
Authority: WO
Inventors: Martin Behle
Original assignee: Hartek Beverage Handling Gmbh
Priority date: 2001-04-12
Filing date: 2002-04-12
Publication date: 2002-10-24
Also published as: HUP0303982A2; PT1379822E; EP1379822B1; HUP0303982A3; DE50202171D1; DE10118622C1; EP1379822A1; CZ20032998A3; ATE288574T1; SK13872003A3; CZ296490B6; ES2237681T3; SK286909B6

Abstract

The invention relates to a beverage cooling device having a receptacle (20) containing a water bath (12), at least one evaporator surface (16) of a refrigerating circuit, beverage lines and a stirrer (18) that brings about a water flux (S) being arranged in said receptacle. The evaporator surface (16) can be formed by the surface of an ice bank (30). The beverage cooling device also has flux guiding device (40) by means of which the water flux (S) is deflected in such a way that water flows along essentially the entire surface of the evaporator surface (16) and substantially parallel thereto. The flux guiding device (40) can have at least one frame profile (40a, 40b) with a substantially L-shaped cross section, one of its legs (42) being oriented substantially parallel to the evaporator surface (16) while the other leg (44) is oriented substantially parallel to the bottom of the receptacle (22). The flux guiding device (40) can be configured as a double guiding frame (40a, 40b). Said flux guiding device (40) can particularly deflect the water flux (S) at an angle (β) of approximately 90°.

Description

Beverage cooler

The invention relates to a device for cooling beverages, according to the preamble of patent claim 1.

Beverage cooling devices are known in the prior art, for example, as so-called beverage flow coolers or so-called circulation carbonators, for example for cooling beer and non-alcoholic beverages. To explain the devices known from the prior art, reference is first made to FIGS. 1 and 2. Known beverage cooling devices accordingly have a container 20 which is filled with water, the so-called water bath 12. In the water bath 12, evaporator lines 14 of a refrigeration cycle are arranged in such a way that they form at least one evaporator surface 16, for example by the evaporator lines 14 in the form of evaporator coils or Evaporator spirals are arranged side by side or one above the other. Depending on the container geometry and line routing, the evaporator lines 14 can form one or more evaporator surfaces 16. As part of the function of a thermodynamic cooling circuit, the evaporator lines absorb heat from the water bath 12. The evaporator surface 16 can optionally be formed by the surface of a so-called ice bank 30, as will be described further below.

In the water bath 12 there are furthermore pipelines in which the drink is conveyed. Such beverage lines are not shown in the accompanying figures for reasons of clarity. They can be guided in the container 20 in any suitable manner, wherein they typically utilize essentially the entire space of the water bath 12 and can be arranged centrally around an agitator 18 and / or in the vicinity of an ice bank 30. The beverage carried in the beverage lines releases heat to the water bath, which cools the beverage. If the beverage cooling device is also to be suitable for carbonated beverages, the associated carbonator tank can also be arranged in the water bath 12 (likewise not shown in the figures).

In the water bath 12 there is also an agitator 18 which causes a water flow S in the water bath 12. FIG. 1 shows an exemplary, temporally and spatially averaged course of the water flow S induced by the agitator 18. When the agitator 18 rotates (arrow D), for example about a central axis of the container 20, the water initially flows axially downward in the middle of the container 20, i.e. normal to the tank bottom 22. The impact is then deflected radially outwards by the impact on the tank bottom 22. The subsequent impact on the container walls 24 or the evaporator surfaces 16 which may be arranged there results in a deflection of the flow upwards. Alternatively, any other suitable arrangement of the agitator 18 in the container 20 with a correspondingly different flow pattern is also conceivable, for example an eccentric arrangement of the agitator 18, in which the flow pattern is basically the same as the curve described above.

From a thermodynamic point of view and to effect the cooling of the beverage in question, the water in the water bath 12 serves both as an energy store and as a transport medium for transferring the heat from the beverage lines to the evaporator lines 14. The water is used as an energy store through the formation of an ice layer 30 which forms around the evaporator tubes 14. One speaks here of a so-called ice bank, the surface of which corresponds to the evaporator surface 16. The enthalpy of solidification of the water stored by the phase transition serves to cover power peaks for a short time and thus reduces the size of the refrigeration cycle process. Depending on the application, an evaporator 14, 16 can also be operated without an ice layer 30, i.e. in such a case the beverage cooling device works without an ice bank.

The water serves as the transport medium by means of the flow S induced by the agitator 18 in the water bath 12, as described above. The aim of the water flow S is on the one hand to improve the heat transfer from the evaporator 14, 16 or the ice layer 30 to the water and from the water to the beverage lines. On the other hand, the transport of locally heated water into colder areas of the water bath 12 is to be increased by the water flow S. Insofar as "water" is used as an energy storage and transport medium, this term stands for all other suitable media or fluids that have comparable properties and functions and have the same effects with respect to the invention and deliver comparable results.

In such beverage cooling devices with an ice bank and in particular in the course of the water flow S in the water bath 12 described above, there is the problem that the normal component of the water flow with respect to the ice bank 30 can result in a successive washing out of the ice bank 30. If the course of the water flow S described above takes place over a longer period of time, a contour of the washout A is formed on the ice bank 30, as is shown by way of example in FIG. As can be seen, such a washout A is primarily located in the lower region of the ice bank 30, that is to say, for example, in the vicinity of the container bottom 22. Because of this washout A, the water flow S is no longer deflected upward by about 90 °, but by one Angles of more than 90 °, possibly even more than 90 °. The result of this is that the water no longer flows over essentially the entire height of the ice bank parallel to the evaporator surfaces 16 or the ice layer 30, but rather that the flow detaches itself from these surfaces, i.e. the water flow loses direct contact with the ice bank well in front of the upper edge of the ice bank 30. Due to the washout A, flow turbulence can also be caused in the water bath 12, which may have negative effects.

The effects described have the result that the area at which the heated water can give off energy at the ice layer is reduced. As a result, the heat transfer between the water bath and the evaporator, but also between the water bath and the beverage lines, is impaired, as a result of which a loss of performance and overall reduced efficiency of the beverage cooling device are caused. Furthermore, the washout A and the reduction in the thickness of the ice bank in the lower region of the water bath can lead to an earlier destabilization of the ice bank, which among other things can result in a reduced peak load capacity. Due to insufficient washing of the ice bank in the upper water bath area, which in turn is due to the separation of the flow from the ice bank described above, there may also be an increased tendency to freeze the upper beverage lines. The invention is therefore based on the object of preventing the stated disadvantages of the prior art and, in particular, of preventing the ice bank from washing out with the associated disadvantages.

This object is achieved according to the invention by a device for cooling beverages according to claim 1. Accordingly, the beverage cooling device has, in particular, a device for guiding the water flow in such a way that the water also flows along and essentially parallel to the substantially entire evaporator surface.

According to the invention, the flow guide device arranged in the beverage cooling device at least partially forces the water flow in such a way that the water in the area of the evaporator surfaces flows essentially parallel to these, if possible, this flow taking place along essentially the entire evaporator surface. If the evaporator is operated with an ice layer (ice bank), the flow thus runs essentially parallel to the surface of the ice bank and essentially over the entire height or length of the ice bank in the container.

The flow device according to the invention thus prevents the water flow in the region of the evaporator surfaces or the ice bank from detaching from them and losing contact with them. Due to the forced flow of water, the washing out of the ice bank with the associated disadvantages mentioned above is also avoided. By guiding the water flow according to the invention parallel to and essentially over the entire length of the ice bank, in particular an improved heat transfer between the water and the ice bank / evaporator is brought about, with which an increased performance and an improved efficiency of the beverage cooling device are achieved.

In the case of the water flow in the water bath induced by the agitator described above with reference to FIGS. 1 and 2, the flow guiding device is arranged essentially on the bottom of the container and has a shape that the water flow in the region of the lower end of the evaporator surfaces in one direction deflected essentially parallel to the evaporator surfaces. It is basically irrelevant here whether the container walls and / or the evaporator surfaces arranged in the region of these walls or in the interior of the container at a distance from the container walls are arranged perpendicularly or at an angle to the container bottom. Likewise, the shape, the course and the arrangement of the container bottom are fundamentally irrelevant. Evaporate surfaces and / or Container walls and / or container bottom can therefore in principle be arranged at any angle to one another.

In a preferred embodiment of the invention, however, the evaporator surfaces are arranged essentially perpendicular to the essentially flat, horizontally extending container bottom, the flow guide device in this case deflecting the water flow through an angle of approximately 90 °.

In a preferred embodiment of the invention, the flow guide device is designed in the form of at least one frame profile or guide plate, which is mounted in the water bath on the container bottom and / or in the vicinity thereof. The baffle or frame has a substantially L-shaped cross-section, one leg of the L-shaped sheet being oriented essentially parallel to the evaporator surface, and the other leg of the L-shaped sheet being substantially parallel to the container bottom, preferably horizontal, is aligned.

In a preferred embodiment of the invention, the flow guide device has a frame profile which is arranged radially inside the evaporator surfaces, the leg which is oriented essentially parallel to the evaporator surfaces slightly overlapping the lower end of the evaporator surfaces.

In a first application, in which the evaporator surfaces extend essentially to the bottom of the container, the frame profile can rest on the bottom of the container. In particular, the leg of the frame profile which is oriented essentially parallel to the bottom of the container rests on the bottom of the container. In a further development of this embodiment, the flow guiding device can have the shape of a flat trough with a closed bottom, which in turn is mounted on the tank bottom. Alternatively or additionally, one or more protrusions or embossments can be provided in the container base or the trough base, which have a corresponding effect.

In a second application, the evaporator surfaces can be arranged at distances from the container bottom and / or the container walls. In this case, the frame profile arranged radially inside the evaporator surfaces is not on the bottom of the container but is arranged above it in such a way that the leg, which is essentially parallel to the evaporator surfaces, slightly overlaps the lower end of the evaporator surfaces. In this case, the flow guiding device as a whole is designed and arranged in such a way that the water flow is divided in the region of the lower end of the evaporator surfaces in such a way that water flows both radially inside and radially outside the evaporator surfaces. The aerodynamic advantages of the frame profile or baffle are thus not only used on one side but on both sides of the ice bank, i.e. the radially inward and the radially outward side of the ice bank, by dividing the water flow that strikes the inner surface of the ice bank and is then guided both behind (outside) and in front of (inside) the ice bank along the surfaces of the ice bank. As a result, the heat-transferring surface of the ice bank or the evaporator is approximately doubled, so that these measures result in a further improved heat transfer between the water and the ice bank / evaporator, with which a further increased performance and an improved efficiency of the beverage cooling device are achieved.

In the last-mentioned second application, in which the evaporator surfaces are arranged at a distance from the container bottom and / or the container walls, the flow guiding device can have a second frame profile which is arranged below and / or at least partially radially outside of the evaporator surfaces. This frame profile can in turn rest on the container bottom, in which case in particular the leg of the frame profile oriented essentially parallel to the container bottom rests on the container bottom. Instead of the second frame profile, a flat pan with a closed bottom can be used. Furthermore, the second frame can be connected to the first frame to form a unitary overall structure, so that the flow guiding device can be inserted as a component in the container of the beverage cooling device.

Basically, in the shaping of all the above-described embodiments of the flow guide device, care must be taken that the deflection of the water flow takes place in the region of the lower end of the evaporator surfaces in such a way that the main flow direction after leaving the flow guide device runs parallel to the evaporator surfaces or the ice bank.

Further details and advantages of the invention will become apparent from the following description of various exemplary embodiments with reference to the accompanying drawings. Figure 1 shows a beverage cooling device from the prior art schematically in

Cross-section;

Figure 2 shows a beverage cooling device from the prior art schematically in

Cross section, in particular the effect of washing out the ice bank is shown;

Figure 3 shows a beverage cooling device according to the invention schematically in

Cross-section;

Figure 4 shows another embodiment of a beverage cooling device according to the

Invention schematically in cross section;

Figure 5 shows a perspective view of a flow control device according to the

Invention;

Figure 6 shows various embodiments of a flow control device according to the invention in cross section;

Figure 7 shows a further embodiment of a beverage cooling device according to the

Invention schematically in cross section;

Figure 8 shows two perspective views of a flow control device according to the embodiment of a beverage cooling device shown in Figure 7 according to the invention.

The beverage cooling device initially has the features that were described above with reference to FIG. 1, to which reference is made in this respect.

FIG. 3 shows a beverage cooling device which corresponds to the beverage cooling device shown in FIG. 1, the same features being identified by the same reference symbols. In addition, in a first embodiment the beverage cooling device now has a flow control device 40 which is arranged on the container bottom 22. The flow guide device is in particular a flow guide frame or guide plate 40a, which is shown in perspective in FIG. 5 and in cross section in various embodiments in FIG. 6. Decisive for the function of this baffle frame 40a is, on the one hand, its position relative to the lowermost evaporator tube 14a in the ice bank 30 or to the lowest position of evaporator tubes 14, for example, if these circulate on the walls 24 of the container 20. On the other hand, the shape and the dimensions of the frame profile are decisive for the function of the guide plate frame 40a. Basically, the shape of the profile must result in a substantially right-angled redirection of the water flow (see FIGS. 3, 5 and 6) if it is assumed that the main flow before the redirection runs parallel to the tank bottom 22, as described above in relation to FIG. 1 has been described. In this embodiment, the right-angled deflection of the water flow S means that the water after the deflection essentially flows along the entire evaporator or ice bank surface 16 and essentially parallel to it.

With regard to the shape and dimensions of the guide plate frame 40, 40a, reference is now made to FIG. 6, the individual representations (A), (B) and (C) representing different embodiments, each in cross section. Basically, the shape of the frame should be selected so that the flow is deflected as smoothly, homogeneously and continuously as possible without flow turbulence or water build-up. The frame profile 40a has an essentially L-shaped cross section, in which the upper leg 42 assigned to the evaporator flat 16 or ice bank 30 is at a substantially right angle on the lower leg 44 assigned to the container bottom 22 (angle β = approx. 90 °).

The variant according to FIG. 6 (A) represents the simplest shape of the frame 40a, which only inadequately fulfills the requirements mentioned. Shapes corresponding to FIGS. 6 (B) or (C) should preferably be selected. In the embodiment according to FIG. 6 (C), the upper leg 42 merges into the lower leg 44 via an essentially circular-shaped intermediate piece. The radius R significantly influences the quality of the deflection, and it should preferably be chosen as large as possible. In the embodiment according to FIG. 6 (B), the upper leg 42 merges into the lower leg 44 via an oblique intermediate piece, the bevel being inclined at an angle α with respect to the container bottom 22 or the lower leg 44. To achieve good flow deflection, the angle cc should preferably be approximately 45 ° and the slope should be as long as possible. Compared to the embodiment according to FIG. 6 (C), the oblique intermediate piece according to FIG. 6 (B) simplifies the radius R, which is a simpler solution, in particular from a manufacturing point of view. The deflection of the water flow, in particular on a continuously curved surface of the flow guide plate or frame, for example in accordance with the embodiment according to FIG. 6 (C), can induce so-called Taylor Goertler longitudinal vortices in the flow. Such longitudinal vortices can arise when a wall boundary layer is overlaid with centrifugal forces, as is the case here when the guide plate overflows. Such longitudinal vortices can in particular have a positive effect on the heat transfer.

In another embodiment, it is conceivable that the evaporator / ice bank surfaces 16 are not arranged perpendicular (.beta. - 90 °) but at an angle of less or more than 90 ° to the container bottom 22. In this case, the upper leg 42 of the frame 40a must again be aligned parallel to the evaporator / ice bank surface 16, i.e. it forms the same angle with the lower leg 44 of the frame 40a as it is formed between the evaporator / ice bank surface 16 and the container bottom 22.

Based on the arrangement of the flow guide frame 40, 40a shown in FIG. 3 essentially on or in the area of the container bottom 22, the length h of the upper leg 42 should preferably be selected with respect to the length of the legs 42, 44 of the frame 40a such that the leg 42 preferably covers 25% to 50% of the diameter of the lowermost evaporator tube 14a of the evaporator surface 16 or the lowermost layer of evaporator tubes 14. The length h thus depends on the arrangement of the evaporator in the container 20 and in particular on the height of the lowest evaporator tube 14a of the evaporator above the container bottom 22, the point with the greatest distance from the container bottom typically being the reference point for the position of the evaporator in the container is chosen. The length t of the lower leg 44 is preferably approximately 0.25 to 0.5 times the length h of the upper leg 42.

In the embodiments of FIG. 6, the angle β between the legs 42 and 44 of the flow guiding frame 40 should preferably be 90 °, so that a perpendicular deflection of the flow parallel to the evaporator ice bank surface 16 is achieved. If the angle β is chosen to be greater than 90 °, the washout effects occur in the ice bank, as explained above with reference to FIG. 2. This would not achieve the object according to the invention sufficiently, and the effectiveness of the flow guiding device would be at least partially nullified. If the angle β is chosen to be less than 90 °, the object according to the invention is also not adequately achieved, since the water flow immediately after the deflection from the evaporator / ice bank surfaces 16 would replace and remove from these. This would in turn deteriorate the heat transfer between water and evaporator, which would in turn reduce the performance and the efficiency of the beverage cooling device.

The minimum distance of the flow guide frame 40 from the evaporator coil results from the minimum distance X between the evaporator tubes 14 and the drink-carrying tubes (not shown). As a typical guide value, 0.5 to 0.7 times X should be selected for this distance.

Corresponding to the type of beverage cooling containers with a rectangular plan that predominates in beverage technology, the flow guiding device should also have a rectangular plan, as is shown by way of example for the flow guiding frame 40 in FIG. 5. With such a design, the guidance of the water flow is also ensured in the corner regions of the container. Due to the preferably essentially angular design of the frame and the bending radii of the evaporator tubes in the corners of the container, there is an increased washout in the corner areas of the ice bank. However, this has the advantage here that the areas that are normally most at risk from freezing are better protected.

As an alternative to the rectangular shape of the beverage cooler and the flow guide frame, the container and the flow guide frame may have any other suitable plan, for example a substantially circular plan. The shape and dimensions of the flow guiding frame can be essentially analogous to what was described above with reference to FIGS. 6 (A) to (C).

According to another embodiment of the invention, the flow guiding device can be formed by one or more projections 50 in the bottom 22 of the container 20, as is shown by way of example in FIG. 4. In particular, the projection 50 can be an embossing, groove or groove protruding into the container interior in the container bottom. The projection must in turn have a leg which is aligned essentially parallel to the evaporator / ice bank surface 16, so that the water flow is again deflected such that the water in turn is essentially parallel to the evaporator / ice bank surface and preferably essentially along the same entire area flows. In the embodiment according to FIG. 4, the radially inner leg of the embossing 50 causes the water flow to be deflected upward. The projection or the embossing 50 slightly overlaps the lower end of the evaporator / ice bank surface, as is principally shown in FIG With respect to the upper, substantially vertical leg 42 of the L-shaped frame profile 40a has been described.

In an alternative of the embodiment according to FIG. 4, the embossing or the projection 50 is arranged radially at the outermost position of the container base 22, that is to say in the lower, outer corner of the container, so that it is located directly under the evaporator surface or the ice bank 30. The radially inner leg of the embossing 50 can in this way form the extension of the evaporator / ice bank surface 16 downward, whereby a deflection of the water flow S upwards is in turn caused by this leg oriented parallel to the evaporator / ice bank surface 16. In order for the deflection to be as smooth and homogeneous as possible, in the two described cases of the embodiment according to FIG. 4, this leg can in turn merge into the container bottom 22 via an arc-shaped intermediate piece or an oblique intermediate piece, as is principally described above with reference to FIGS. 6 (B). and (C) has been explained.

The use of a flow guiding frame 40 has the advantage over projections or embossings 50 in the container bottom that the operation of the beverage cooling device can be carried out more individually and flexibly, in that different sized flow guiding frames 40 can be used in the same cooling device as required. In contrast, the embossments 50 are rigid and integrally connected to the container 20. Furthermore, the manufacture of the flow guide frame, regardless of the beverage cooler, is simpler in terms of production technology than the manufacture of the embossments or protrusions in the base of the container. In the case of evaporator tubes or coils circulating in the container, the embossing must also circulate continuously in a corresponding manner on the container base, which can also be problematic in terms of production technology.

In the embodiments of the beverage cooling device according to the invention previously described with reference to FIGS. 3 and 4, the evaporator / ice bank surfaces are essentially arranged on the container walls and extend essentially to the bottom of the container. In this case, the frame profile arranged radially inside the evaporator surfaces can rest on the container bottom. In contrast, in a further embodiment of the beverage cooling device according to the invention, which is shown in FIGS. 7 and 8, the evaporator / ice bank surfaces 16 are arranged at a distance from the container bottom 22 and the container walls 24. In this case, the frame profile 40a arranged radially inside the evaporator surfaces does not lie on the container bottom 22 but is arranged above it in such a way that, in turn, it is essentially parallel to the bottom Evaporator surfaces 16 aligned leg 42 slightly overlaps the lower end of the evaporator surfaces 16. Otherwise, the embodiment shown in FIG. 7 essentially corresponds to the beverage cooling device shown in FIGS. 3 to 6, the same features being identified by the same reference numerals. In particular, the frame profile 40a from FIG. 7 corresponds to the frame profile 40a shown in FIGS. 5 and 6, so that what has been said above in relation to these figures also applies analogously to the embodiment in FIG.

A controlled water flow S is achieved on both sides of the ice bank 30 by the flow baffle 40a according to FIG. 7, in that the water flow to be essentially parallel to the container bottom 22 and essentially perpendicular to the ice bank 30 or the inner evaporator / ice bank surface 16 Water flow S is divided in the region of the lower end of the evaporator / ice bank surface 16 in such a way that part of the water flow S is guided upwards along the evaporator / ice bank surface 16 along the radially inward-pointing evaporator surface 16, that is to say internally in front of the ice bank 30 , while the other part of the water flow S between the container wall 24 and the radially outward-facing evaporator surface 16, that is to say to the outside behind the ice bank 30, is guided upwards along this evaporator ice bank surface 16. The container wall 24 together with the outward-facing evaporator surface 16 thus forms a guideway or a channel for the partial water flow in question. As already explained at the beginning, this embodiment roughly doubles the heat-transferring surface of the ice bank 30 or of the evaporator. In favorable cases, the area around the ice can even be more than doubled.

As shown in FIG. 7, in addition to the first frame profile 40a, a second frame profile 40b can also be provided, which is arranged below and at least partially radially outside the ice bank 30 or the evaporator / ice bank surfaces 16. This second frame profile 40b can rest on the container bottom 22, and it can improve the guidance and deflection of the partial water flow that flows between the container wall 24 and the radially outward-facing evaporator surface 16. The frame profile 40b can essentially correspond to the frame profile 40a shown in FIGS. 5 and 6, so that what has been said above in relation to these figures also applies analogously to the frame profile 40b.

If the second frame profile 40b is not provided, the guiding and deflection of the partial water flow in question is accomplished through the lower corners of the container 20, that is to say through the transition between the container bottom 22 and the container walls 24 - ij

The transition must then be designed in a suitable manner. In both cases, the first frame profile 40a must be kept at a distance above the container bottom 22 or the second frame profile 40b by suitable spacers.

The second frame profile 40b can be connected to the first frame profile 40a to form an overall structure, as is shown in the two illustrations in FIG. In this case, the flow guide 40 is a double baffle or baffle that can be inserted as a unitary component into the container 20 of the beverage cooler.

In a further embodiment of the beverage cooling device according to the invention, which is not shown in the figures, the flow control device 40 can be formed by a wall which is arranged in the container 20 radially inside the evaporator surfaces 16 and at a distance, essentially parallel to these, wherein the wall extends substantially the entire length of the evaporator surface 16 or a large part thereof. The wall, together with the evaporator surface 16, forms a guideway or channel for the water flow, which always runs parallel to the ice bank surface and cannot detach from it.

Claims

1. Device for cooling beverages, with a container (20) which is filled with water (water bath 12), evaporator lines (14) of a refrigeration circuit being arranged in the water bath (12) such that they have at least one evaporator surface (16) form, wherein beverage lines carrying the beverage are arranged in the water bath (12), and wherein an agitator (18) for causing a water flow (S) is arranged in the water bath (12), characterized by a device (40; 50) for conducting the water flow (S) such that the water also flows along and essentially parallel to the substantially entire evaporator surface (16).

2. A beverage cooling device according to claim 1, in which the evaporator surfaces (16) are arranged essentially on walls (24) of the container (20), and in which the agitator (18) is arranged such that the water in the container (20) is axial flows downward, flows radially outward at the bottom (22) of the container (20) and is then deflected upward in the region of the walls (24) of the container (20), characterized in that the flow guide device (40; 50) in is essentially arranged on the container bottom (22) and has a shape which deflects the water flow (S) in the region of the lower end of the evaporator surfaces (16) in a direction essentially parallel to the evaporator surfaces (16).

->. Beverage cooling device according to claim 1 or 2, characterized in that the evaporator surfaces (16) are arranged substantially perpendicular to the container bottom (22) and in that the flow guiding device (40; 50) detects the water flow (S) by an angle (β) of approximately 90 ° deflects.

4. A beverage cooling device according to claim 2 or 3, characterized in that the flow guide device (40) has at least one frame profile (40a, 40b) with a substantially L-shaped cross section, one leg (42) of which is essentially parallel to the evaporator surfaces (16 ) is aligned and the other leg (44) is aligned substantially parallel to the container bottom (22).

5. A beverage cooling device according to claim 4, characterized in that the flow guiding device (40) has a frame profile (40a) which is arranged radially inside the evaporator surfaces (16), the leg (42) oriented essentially parallel to the evaporator surfaces (16). the lower end of the evaporator surfaces (16) overlaps.

6. A beverage cooling device according to claim 4 or 5, characterized in that the evaporator surfaces (16) extend substantially up to the container bottom (22) and that the leg (44) aligned essentially parallel to the container bottom (22) on the container bottom (22 ) rests.

7. A beverage cooling device according to claim 4 or 5, characterized in that the evaporator surfaces (16) are arranged at intervals from the container bottom (22) and / or the container walls (24), and that the flow guide device (40) has a frame profile (40b) , which is arranged below and / or at least partially radially outside the evaporator surfaces (16).

8. A beverage cooling device according to claim 7, characterized in that the leg (44) of the frame profile (40b) aligned essentially parallel to the container base (22) rests on the container base (22).

9. Beverage cooling device according to one of claims 4 to 8, characterized in that the flow guide device (40) is arranged such that the water flow (S) in the region of the lower end of the evaporator surfaces (16) is divided such that a water flow (S) both radially inside and radially outside of the evaporator surfaces (16).

10. A beverage cooling device according to claim 2 or 3, characterized in that the flow guide device (40) is formed by at least one projection (50) in the container bottom (22), in particular by at least one in the container interior. Clearly protruding embossing (50) in the container bottom (22), the projection (50) having a leg which is aligned essentially parallel to the evaporator surface (16).

1 1. Beverage cooling device according to one of claims 4 to 10, characterized in that the evaporator surfaces (16) are formed by evaporator tubes (14) arranged one above the other, and that the leg (42) aligned essentially parallel to the evaporator surfaces (16) has a length (h) has such that it preferably covers 25% to 50% of the diameter of the lowermost evaporator tube (14a) of the evaporator surfaces (16) when arranged radially within the evaporator surfaces (16).

12. A beverage cooling device according to claim 1 1, characterized in that the leg (44) aligned substantially parallel to the container bottom (22) has a length (t) which is approximately 0.25 to 0.5 times the length (h) of the other leg (42).

13. Beverage cooling device according to one of claims 4 to 12, characterized in that the two legs (42, 44) are connected to one another via an essentially circular-arc-shaped intermediate piece.

14. Beverage cooling device according to one of claims 4 to 12, characterized in that the two legs (42, 44) are connected to one another via an oblique intermediate piece which forms an angle (α) of approximately 45 ° with the container bottom (22).

15. Beverage cooling device according to one of claims 1 to 14, characterized in that the container (20) and the flow guide device (40) have a substantially rectangular plan.

16. Beverage cooling device according to one of claims 1 to 14, characterized in that the container (20) and the flow guide device (40) have a substantially circular plan.

17. Beverage cooling device according to one of claims 6, 7 or 8, characterized in that the flow guide device (40) has a trough with a closed bottom.

18. A beverage cooling device according to claim 1, characterized in that the flow guide device (40) has a wall arranged radially inside the evaporator surfaces (16) and at a distance essentially parallel to the evaporator surfaces (16).

19. A beverage cooling device according to one of the preceding claims, characterized in that an ice layer is formed on the evaporator lines (14), the evaporator surfaces (16) formed by the evaporator lines (14) being ice surfaces (ice bank 30).