EP3835688A1 - Cooling device - Google Patents

Abstract

The invention relates to a cooling device (1) for cooling units (2), such as machines or technical equipment, with a container (3) through which a heat transfer medium (7) flows and a cooling unit (12) attached to the container (3), which a refrigerant (17) guided in a circuit (20) which, while absorbing heat from the heat transport medium (7), changes into a gaseous state when it flows through an evaporator tube (18) protruding into the heat transport medium (7) and is subsequently compressed is then liquefied again with the release of heat. For an improved configuration, it is proposed that the evaporator tube (18) have tube loops (27) running from the outside to the inside and / or from the inside to the outside in an evaporator tube section (28, 29), which extend from an outermost tube loop (30). towards an innermost pipe loop (31) and / or starting from an innermost pipe loop (31) towards an outermost pipe loop (30), the cooling unit (12) with the evaporator pipe (18) as a removable module (M) on the Container (3) is seated.

Description

Field of technology

The invention relates to a cooling device for cooling units, such as machines or technical equipment, with a container through which a heat transport medium flows and a cooling unit attached to the container, which has a refrigerant guided in a circuit, which absorbs heat from the heat transport medium at a Flowing through an evaporator tube protruding into the heat transport medium and subsequent compression changes into a gaseous state and is then liquefied again with the release of heat.

State of the art

Cooling devices of the type in question are known in different configurations. This preferably results in two cooling circuits, one cooling circuit (the so-called hydraulic part of the cooling device) serving to directly cool the unit using the heat transfer medium provided, in particular liquid heat transfer medium such as water or water with additives to lower the freezing point. A second cooling circuit (what is known as the refrigeration part of the cooling device) is used to cool the heat transport medium from the first cooling circuit using the refrigerant provided here. The hydraulic components of the first circuit transport heat from heat-producing machines or systems by conveying the heat transport medium through the applications to be cooled. In the second cooling circuit, the refrigerant is evaporated in the evaporator tube. This process removes heat from the heat transport medium. The evaporator tube can be designed in the manner of an immersion cooler be. With this, refrigerant temperatures of approx. -10 ° C to further approx. + 20 ° C can be achieved regardless of the ambient temperature.

Summary of the invention

With regard to the prior art described above, an object of the invention is seen to be an improved design of a cooling device of the type in question.

A possible solution to the problem is given according to a first inventive idea in a cooling device, which is based on the fact that the evaporator tube in an evaporator tube section has tube loops that run from the outside to the inside and / or from the inside to the outside, starting from an outermost one Tube loop taper spirally to an innermost tube loop and / or starting from an innermost tube loop to an outermost tube loop, the cooling unit with the evaporator tube being seated on the container as a removable module.

The spiral configuration of such an evaporator tube section advantageously results in a favorable and effective heat transfer between the heat transport medium accommodated in the container and the refrigerant guided through the evaporator tube. The spiral shape offers a large contact surface of the evaporator tube on a comparatively small area and / or comparatively small volume within the container. The pipe loops can preferably be provided to run in such a way that their pipe outer walls run at a distance from one another, so that the refrigerant to be cooled can also pass through these intermediate spaces. The evaporator tube can, as is also preferred, in particular in the spiral-shaped evaporator tube section over the entire length The circumference of the evaporator tube comes into contact with the heat transfer medium to be cooled.

The spiral-shaped tapering from the outside to the inside or from the inside to the outside can be given uniformly, but alternatively also unevenly. In addition, three or more, for example four, five or six or more up to ten or fifteen tube loops can result in the spiral evaporator tube section.

The further proposed modular design of the cooling unit offers favorable handling, for example in the course of a repair or maintenance of the cooling unit. The module having in particular the evaporator tube and preferably also the other components, such as a compressor, for example, can be removed from the container, optionally after a lock or the like provided, for example, has been removed. In this way, for example, the cooling unit can be replaced with little effort, for example, the cooling unit can also be replaced by a cooling unit with a higher or lower cooling capacity. In the placed position on the container, the evaporator tube of the cooling unit module dips into the container and thus into the heat transport medium accommodated in the container, whereby the cooling unit module can at the same time, at least partially, form a cover for the container.

Further features of the invention are explained below, also in the description of the figures, often in their preferred assignment to the subject matter of claim 1 or to features of further claims. However, they can also be assigned to only individual features of claim 1 or the respective further claim or each can be independent of importance.

Thus, according to a possible embodiment, a longitudinal axis running in the longitudinal extension of the evaporator tube can extend in the spiral-shaped evaporator tube section in a spiral section plane. Correspondingly, both the outer pipe loop and the inner pipe loop of the spiral evaporator pipe section, as well as the pipe loops continuing between the outer and inner pipe loops, extend essentially in a common plane (with respect to their longitudinal center axes).

In the usual position of use of the cooling unit or the cooling unit module, as is also preferred, the above-described spiral section plane can be oriented vertically or along a vertical plane. The orientation of the spiral section plane in the arrangement position of the cooling unit on the container can be adapted to a broad or longitudinal extension of the container. For example, the spiral section plane can be aligned parallel to a container wall running in the width direction or in the longitudinal direction. In an alternative embodiment, the spiral section plane is aligned in a horizontal section including an acute or also obtuse angle to a container wall.

According to a further possible embodiment, two spiral evaporator tube sections can be provided. Their spiral section planes can be spaced apart from one another, viewed in a direction perpendicular to the spiral section planes.

If two spiral evaporator tube sections are formed, these can be aligned parallel to one another with respect to their spiral section planes, alternatively with reference to a horizontal section in the usual position of use, possibly including an acute angle.

In particular with a parallel alignment of the spiral section planes of both evaporator tube sections, a distance perpendicular to the plane can be given which is one or more times, for example two to four times, possibly up to ten times the outer pipe diameter of a pipe Pipe loop, viewed transversely to the extent of the longitudinal axis, can correspond.

A spiral evaporator tube section can taper from the outermost tube loop to the innermost tube loop and the further spiral evaporator tube section, possibly offset in planes, from the innermost tube loop to the outermost tube loop and thus correspondingly opposite to the other evaporator tube section .

The spiral evaporator tube section preferably has an inlet section and an outlet section. If two spiral evaporator tube sections are formed, as is also preferred, one evaporator tube section can be provided with the inlet section and the other evaporator tube section with the outlet section.

The longitudinal axis of the inlet section and / or the outlet section can extend in the spiral section plane of the associated evaporator tube section. In an alternative embodiment, this longitudinal axis can also run at an acute angle to the plane described above.

In a further embodiment, it is preferred that the inlet section and / or the outlet section is assigned to the outermost tube loop of the spiral evaporator tube section. The extreme The pipe loop accordingly preferably merges into the inlet section or the outlet section, extending in the same plane.

When two spiral-shaped evaporator tube sections are formed, these are overall line-connected to one another to form the evaporator tube. The relevant connecting section of the evaporator tube can, as is also preferred, run at an acute angle of approximately 10 ° to 30 °, further for example approximately 15 °, to one of the spiral section planes.

More preferably, such a connecting section and the two evaporator tube sections, as also optionally also the inlet section and the outlet section, continuously have the same internal and also preferably the same external diameter. In a further preferred embodiment, the evaporator tube sections and the connecting section, moreover preferably also the inlet section and the outlet section, are designed in one piece and further preferably of the same material.

The spiral course of an evaporator tube section can be given essentially rectangular, more preferably with rounded corner transition areas. Even with the preferably selected double layer, that is to say the arrangement in particular of two evaporator tube sections aligned parallel to one another and connected to one another, a sensible limitation of the overall tube length is given. This is around 20 to 25 meters to avoid too great a pressure drop inside the evaporator tube.

The heat transfer medium used to cool a unit, such as a machine or a further technical device, can be circulated by means of a pump. This can be, for example be an electrically operated pump, further for example in the form of a circulating pump.

The container of the cooling device can, as is also preferred, have a depth, a width and a length, the length being 1.5 times or more, further for example 2 to 5 times the width. According to a further development, the depth of the container can be selected to be approximately adapted to the width of the container, so more preferably approximately 0.7 to 2 times the width.

Thus, in a further embodiment, the evaporator tube can extend essentially over the depth of the container, correspondingly in the usual state of use over the depth of the container viewed in the vertical direction. Here, the evaporator tube can also leave a distance to a container bottom, so that a relevant extent of the evaporator tube in the vertical direction is approximately 0.7 to 0.95 times, for example approximately 0.85 times the depth of the container, measured starting out from an upper opening plane of the container to the bottom surface.

According to a preferred embodiment, the evaporator tube can only extend over a part over the length and / or over the width of the container, for example over a width dimension that is approximately 0.3 to 0.6 times, further approximately 0, 4 to 0.5 times the container width. Viewed over the length of the container, the evaporator tube can extend, for example, over a dimension that is approximately 0.2 to 0.5 times, further for example approximately 0.3 times, but possibly also up to 0.95 times can correspond to the inner container length.

The cooling unit can moreover, as is also preferred, have a heat exchanger arranged outside the container in the arrangement position of the module on the container. This can be a so-called condenser or condenser. This heat exchanger is more preferably part of the cooling unit module. In a further embodiment, the heat exchanger runs next to the evaporator tube with reference to a vertical projection in the usual usage position of the cooling unit module.

The container can also have a base running along a broad and / or longitudinal side and protruding over the broad and / or longitudinal side of the container. This base can be used to fasten further components of the cooling device. For example, a switch box for the electrical supply of the cooling device and possibly for the electrical control of the cooling device can also be arranged on the base. In addition, according to a possible embodiment, the pump described above can also be arranged on this base.

Advantageously, two or more cooling units or cooling unit modules can be assigned to the same container. This can involve the same cooling units, particularly preferably cooling units with the same output. By arranging one or more cooling units, a power adjustment can be achieved in a simple manner. For example, by arranging three cooling units on the container, the cooling capacity can be tripled compared to the arrangement of only one cooling unit.

According to the proposed invention, one, two or three cooling unit modules can be placed on a (basic) container. The cooling unit modules can be constructed identically and are preferably one below the other interchangeable. A central control unit, which may be provided in the switch box, can operate every stage of the module. Due to this modular structure, the cooling device can for example be built in three power variants, for example with powers of 1.5 kW, for example 3 kW and for example 4.5 kW with an individual power of a cooling unit module of for example 1.5 kW.

Propane (R290), for example, can be used as the refrigerant in the refrigeration unit, and the amount of refrigerant in a refrigeration unit module can be approximately 120 to 180 g, for example approximately 150 g.

With regard to the disclosure, the ranges or value ranges or multiple ranges specified above and below also include all intermediate values, in particular in 1/10 steps of the respective dimension, possibly also dimensionless. For example, the specification 0.3 to 0.6 times also includes the disclosure of 0.31 to 0.6 times, 0.3 to 0.59 times, 0.31 to 0.59 times etc. This disclosure can serve, on the one hand, to delimit a specified range limit from below and / or above, but alternatively or additionally to disclose one or more singular values from a respective specified range.

Brief description of the drawings

Fig. 1

die Kühleinrichtung in perspektivischer Darstellung, eine erste Ausführungsform betreffend;

Fig. 2

die Kühleinrichtung in einer Ansichtsdarstellung;

Fig. 3

die Seitenansicht gegen die Kühleinrichtung gemäß dem Pfeil III in Figur 2;

Fig. 4

die Draufsicht auf die Kühleinrichtung gemäß dem Pfeil IV in Figur 2;

Fig. 5

in schematischer Darstellung die Kühleinrichtung gemäß Figur 1 in Zuordnungsstellung zu einem zu kühlenden Aggregat;

Fig. 6

eine Schemadarstellung der Kühleinrichtung;

Fig. 7

in einer Einzeldarstellung ein Kühlaggregat-Modul der Kühleinrichtung;

Fig. 8

die Seitenansicht gegen das Kühlaggregat-Modul;

Fig. 9

die Draufsicht auf das Kühlaggregat-Modul;

Fig. 10

in Ansicht eine Einzeldarstellung eines Verdampfers des Kühlaggregat-Moduls;

Fig. 11

die Seitenansicht gegen den Verdampfer;

Fig. 12

die Rückansicht des Verdampfers;

Fig. 13

den Verdampfer in perspektivischer Darstellung;

Fig. 14

eine der Figur 1 entsprechende perspektivische Darstellung einer Kühleinrichtung in einer zweiten Ausführungsform;

Fig. 15

die Kühleinrichtung gemäß Figur 14 in einer Ansichtsdarstellung;

Fig. 16

die Seitenansicht gemäß dem Pfeil XVI in Figur 15;

Fig. 17

die Kühleinrichtung in einer weiteren Ausführungsform, betreffend eine Vorderansicht;

Fig. 18

die Seitenansicht gemäß dem Pfeil XVIII in Figur 17;

Fig. 19

die Draufsicht auf die Kühleinrichtung gemäß Figur 17.

The invention is explained below with reference to the accompanying drawing, which, however, merely represents exemplary embodiments. A part that is only explained with reference to one of the exemplary embodiments and is not replaced by another part in a further exemplary embodiment due to the particularity highlighted there, is therefore also for this further exemplary embodiment described as a possible existing part. The drawing shows:

Fig. 1

the cooling device in perspective, relating to a first embodiment;

Fig. 2

the cooling device in a view representation;

Fig. 3

the side view against the cooling device according to the arrow III in Figure 2 ;

Fig. 4

the top view of the cooling device according to the arrow IV in Figure 2 ;

Fig. 5

in a schematic representation the cooling device according to Figure 1 in the assignment position to a unit to be cooled;

Fig. 6

a schematic representation of the cooling device;

Fig. 7

an individual illustration of a cooling unit module of the cooling device;

Fig. 8

the side view against the cooling unit module;

Fig. 9

the top view of the cooling unit module;

Fig. 10

a view of an individual representation of an evaporator of the cooling unit module;

Fig. 11

the side view against the evaporator;

Fig. 12

the rear view of the evaporator;

Fig. 13

the evaporator in a perspective view;

Fig. 14

one of the Figure 1 corresponding perspective illustration of a cooling device in a second embodiment;

Fig. 15

the cooling device according to Figure 14 in a view representation;

Fig. 16

the side view according to the arrow XVI in Figure 15 ;

Fig. 17

the cooling device in a further embodiment, relating to a front view;

Fig. 18

the side view according to arrow XVIII in Figure 17 ;

Fig. 19

the top view of the cooling device according to Figure 17 .

Description of the embodiments

Is shown and described, initially with reference to the representations in FIG Figures 1 to 6 , a cooling device 1 for cooling an assembly 2, for example in the form of a heat-generating production plant, as shown in FIG Figure 5 is shown schematically.

The cooling device 1 consists essentially (as in Figure 6 shown schematically) from a hydraulic part H and a refrigeration part K.

In the hydraulic part H, a trough-like container 3 is initially provided with a container bottom 4, two container longitudinal sides 6, which in the exemplary embodiments run essentially parallel and at a distance from one another, and two container broad sides 5, which run perpendicular to the container long sides 6 6 limited container opening points upwards in the usual position of use of the container 3 and can, as also preferred, be covered like a lid by one or more modules M described in more detail below.

The container 3 has a container length a along the longitudinal side 6 of the container, which in the exemplary embodiment shown can correspond to approximately 3 times the container width b considered transversely to this. The container depth c viewed perpendicular to this, starting from a container opening plane O and measured in the normal position of use of the container 3 in the vertical direction to the surface of the container bottom 4, corresponds approximately to the dimension of the container width b.

The container 3 serves in the hydraulic part H of the cooling device 1 as a tank for a heat transport medium 7. During operation, this is fed to the unit 2 via an inlet pipe 9 for cooling the unit 2 and conveyed back to the container 3 via an outlet pipe 8. This results in a circuit 10 of the heat transport medium 7, for which purpose a pump 11, in particular an electric circulating pump, is also provided, in particular in the area of the inlet pipe 9.

The container 3 can be arranged on a base 21 which, according to the method shown in FIGS Figures 1 to 5 The first embodiment shown can protrude along the longitudinal side 6 of the container in the width direction of the container 3 beyond the longitudinal side 6 of the container. The above-described pump 11 can be arranged on this protruding part of the base 21. Furthermore, for example, a switch box 22 for the electrical supply and / or for the electrical control of the cooling device 1 can also be arranged on or on the base 21.

As further from the embodiment according to Figures 14 to 16 As can be seen, the base 21, optionally also accommodating the pump 11 and / or the switch box 22, can be provided assigned to the container broad side 5 and protruding freely in the direction of the container longitudinal side 6 beyond the container broad side 5.

In a further possible embodiment, according to the in the Figures 17 to 19 The illustrated third embodiment, the pump 11 and / or the switch box 22 can be arranged on a cover section 23 partially covering the container opening, so that these further components of the hydraulic part H can be arranged on the container 3.

The refrigeration part K of the cooling device 1 is essentially given by a cooling unit 12, which is further essentially composed of a compressor 13, a heat exchanger or condenser 14 and an evaporator 15, preferably in the form of an immersion cooler. The components described above are connected to one another in series via pipelines 16, in which pipeline 16 a refrigerant 17 is conveyed. The refrigerant 17 can be propane (R290), for example.

In the assignment position of the cooling unit 12 to the hydraulic part H, the evaporator 15 with its evaporator tube 18 plunges through the container opening plane O into the container 3 and thus into the heat transport medium 7 stored in the container 3 or flowing through the interior of the container 18 flowing refrigerant 17 withdraws heat from the heat transfer medium 7 of the hydraulic part H flowing around the evaporator tube 18 as a result of evaporation of the refrigerant 17 released, in particular, as also preferred in the illustrated embodiments, to the ambient air. The refrigerant 17 liquefies again due to the temperature drop and is fed to the evaporator 15. An expansion valve 19 can also be provided between the heat exchanger 14 and the evaporator 15, viewed in the direction of flow r.

The refrigerant 17 is thus conveyed within the refrigeration part K in a further circuit 20.

The cooling unit 12, which is essentially composed of the components described above, can be combined in a modular manner and assigned to the container 3. For this purpose, as is also preferred, the cooling unit 12 can have a base 24 with a width dimension d and a length dimension e viewed transversely to this. According to the illustrated embodiments, the two dimensions of extent described above can be selected to be approximately the same. It is further preferred in the Figures 1 to 16 Embodiments illustrated, a width dimension d is selected which corresponds essentially to the container width b. The length dimension In these exemplary embodiments, however, e essentially corresponds to approximately one third of the container length a.

In the embodiment according to the representations in FIGS Figures 17 to 19 This results in both a width dimension d and a length dimension e, which can each essentially correspond to approximately 0.5 times the container length a or the container width b, with the further preferred configuration of the container 3 of essentially the same length in the width and length directions .

The compressor 13 and the heat exchanger 14 are preferably arranged on the floor 24 of the cooling unit 12, and furthermore the expansion valve 19 if necessary.

The evaporator 15 extends underneath the base 24, the inlet section 25 and the outlet section 26 of which extend through the base 24 and are connected in terms of flow to the components arranged on the base 24.

The cooling unit 12 is thus formed as a module M, with several such, preferably identically formed, modules M being assignable to a container 3. According to the illustrated embodiments, three such modules M can be assigned to the container 3, the bases 24 of the modules M or of each cooling unit 12 being able to cover the container opening in the area of the container opening plane O like a lid. In this case, the modules M can be supported via the respective floor 24 on the container wall delimiting the container opening plane O. So are in the in the Figures 1 to 16 illustrated embodiments three modules M are provided in a side-by-side arrangement, their floors 24 preferably alone represent a cover for the container 3. In the case of the Figures 17 to 19 The illustrated embodiment cover the bottoms 24 of the three modules M here, too, essentially three quarters of the container opening, which is also essentially square here. In this embodiment, the last quarter is covered by the cover section 23 carrying the pump 11 and possibly the switch box 22.

The evaporator tube 18 of the evaporator 15 initially and essentially has tube loops 27 which taper in a spiral shape from the outside to the inside or from the inside to the outside. As is also preferred, two such spiral evaporator tube sections 28 and 29 can be provided, the evaporator tube section 28, viewed in the direction of flow r of the refrigerant 17, spiraling from an outermost tube loop 30 to an innermost tube loop 31 and the evaporator Pipe section 29 in a spiral shape starting from the innermost pipe loop 31 towards the outermost pipe loop 30.

The pipe loops 27, 30 and 31 extend with reference to a view as shown in FIG Figures 10 and 12 elongated, rectangular with rounded corner regions, it being possible for a length / width ratio of the rectangular shape of approximately 1: 1 to 2: 1, more preferably approximately 1.5: 1, to be given.

Including the outermost pipe loop 30 and the innermost pipe loop 31, each evaporator pipe section 28, 29 can have approximately five or six pipe loops.

As is also preferred, the two evaporator tube sections 28 and 29 can flow via a connecting section 32 of the evaporator tube 18 be connected to each other. This connecting section 32 preferably extends starting from the end of the innermost pipe loop 31 of the evaporator pipe section 28 to the facing beginning of the innermost pipe loop 31 of the further evaporator pipe section 29.

In the longitudinal extension L of the evaporator tube 18, there is a central geometric longitudinal axis x in the evaporator tube 18. Considered transversely to this, the result is an evaporator tube outer diameter f.

The longitudinal axis x of an evaporator tube section 28 or 29, corresponding to the shape of an evaporator tube section 28 or 29, preferably extends in a spiral section plane E or E ', whereby both planes E and E' can be aligned parallel to one another (see. Figure 11 ).

The longitudinal axis x 'of the inlet section 25 entering the evaporator tube section 28 can also run in the spiral section plane E of the associated evaporator tube section 28, as can the longitudinal axis x "of the outlet section 26 in the spiral section plane E' of the associated evaporator tube section 28 Evaporator tube section 29.

The geometric longitudinal axis x '″ of the connecting section 32 can enclose an acute angle α to the spiral section planes E and E', which angle α can be approximately 10 ° to 15 °, optionally up to 30 °.

The pipe loops 27 of both evaporator pipe sections 28 and 29 can, as is also preferred in the exemplary embodiments, both rotate in the same direction g.

The distances h of the pipe loops 27 transversely to the longitudinal extension L of the evaporator tube 18 or transversely to the longitudinal axis x to one another can correspond to approximately 0.25 to 1 times the external diameter f of the evaporator tube 18. In this case, viewed over the circumference, different distances h can arise, for example up to 1.5 or 2 times the pipe outer diameter f. In any case, it is preferred that over the entire spiral course of both evaporator pipe sections 28 and 29 the complete Surface of the evaporator tube 18 can be flowed around by the heat transport means 7 in the use position of the cooling unit 12. However, at least partial contact between two adjacent pipe loops 27 is also possible.

The evaporator tube sections 28 and 29 can be spaced perpendicular to their spiral section planes E and E 'by a dimension p, which can correspond to about 1 to 2 times, further about 1.5 times the outer tube diameter f .

Inlet section 25, evaporator tube sections 28 and 29 as well as connecting section 32 and outlet section 26 are preferably designed in one piece and of the same material, correspondingly by a pipe 16 that has a constant diameter throughout (both in terms of the inner and outer diameter).

This results in an evaporator tube 15 with two spiral evaporator tube sections 28 and 29, which are spaced apart from one another and are preferably aligned parallel to one another, the spiral section planes E and E 'preferably being oriented essentially vertically in the use position. As a result, an immersion cooler is implemented that has a comparatively low Volume and a comparatively small area of extension can achieve a comparatively high heat transfer.

The evaporator 15 has a depth s (cf. Figure 8 ), which in the usage assignment position of the cooling unit 12 can correspond to approximately the container depth c or approximately 0.8 to 0.9 times the container depth c. Even those with reference to a vertical projection (cf. Figure 9 ) considered longitudinal extension t of the evaporator 15 is essentially adapted to the longitudinal extension dimension e of the cooling unit 12, which is predetermined by the base 24. For example, the length dimension t can correspond approximately to 0.7 to 0.9 times the length dimension e. The width dimension u of the evaporator 15 viewed transversely to this can, as also shown, correspond to approximately 0.35 to approximately 0.6 times, further approximately 0.5 times the width dimension d of the cooling unit 12, with further reference to FIG Such a vertical projection of the heat exchanger 14 can be provided outside the projected area of the evaporator 15 and thus arranged in a side-by-side arrangement with respect to the evaporator 15.

In addition, the evaporator 15 can be arranged on the underside of the bottom 24 that when the cooling unit 12 is positioned on the container 3 and the evaporator 15 is immersed accordingly in the container 3, the spiral section planes E and E 'are parallel to the longitudinal side 6 or the broad side of the container 5 are aligned. In this regard, as also shown, an arrangement of the evaporator 15 is preferred in which a spiral section plane E or E 'with reference to a vertical projection (cf. Figure 9 ) includes an acute angle β of about 15 ° to 30 °, for example to the longitudinal side 6 of the container.

The above explanations serve to explain the inventions covered by the application as a whole, which also develop the state of the art independently at least through the following combinations of features, whereby two, more or all of these combinations of features can also be combined, namely:

A cooling device 1, which is characterized in that the evaporator tube 18 has tube loops 27 in an evaporator tube section 28, 29 which run from the outside to the inside and / or from the inside to the outside and extend from an outermost pipe loop 30 to an innermost pipe loop 31 and / or, starting from an innermost pipe loop 31, taper spirally to an outermost pipe loop 30, the cooling unit 12 with the evaporator pipe 18 being seated on the container 3 as a removable module M.

A cooling device 1, which is characterized in that a longitudinal axis x running in the longitudinal extension L of the evaporator tube 18 extends in the spiral evaporator tube section 28, 29 in a spiral section plane E, E ', and / or, preferably, that the spiral section -Elevel E, E 'is vertically aligned in the usual position of use of the cooling unit 12.

A cooling device 1, which is characterized in that two spiral evaporator tube sections 28, 29 are provided, the spiral section planes E, E 'of which are spaced apart from one another in a direction perpendicular to the spiral section planes E, E'.

A cooling device 1, which is characterized in that a spiral evaporator pipe section 28, 29 tapers from the outermost pipe loop 30 to the innermost pipe loop 31 and the other Spiral evaporator tube section 29 from the innermost tube loop 31 to the outermost tube loop 30.

A cooling device 1, which is characterized in that the longitudinal axis x ', x "of an inlet section 25 and / or an outlet section 26 of the spiral evaporator tube section 28, 29 extends in the associated spiral section plane E, E', and / or , preferably that the inlet section 25 and / or the outlet section 26 is assigned to the outermost tube loop 30 of the spiral evaporator tube section 28, 29, and / or, preferably that the longitudinal axis x '"of one of the two spiral evaporator tube sections 28, 29 connecting connecting section 32 of the evaporator tube 18 extends at an acute angle β to one of the spiral section planes E, E '.

A cooling device 1, which is characterized in that the heat transfer medium 7 can be circulated by means of a pump 11.

A cooling device 1, which is characterized in that the container 3 has a depth c, a width b and a length a, the length a corresponding to 1.5 times or more the width b, and / or, preferably, that the evaporator tube 18 extends essentially over the depth c of the container 3, and / or, preferably, that the evaporator tube 18 extends only over part of the length a and / or part of the width b of the container 3.

A cooling device 1, which is characterized in that the cooling unit 12 has a heat exchanger 14 arranged outside of the container 3 and that the heat exchanger 14 runs in a vertical projection next to the evaporator tube 18.

A cooling device 1, which is characterized in that the container 3 has a base 21 running along a broad side 5 and / or longitudinal side 6 and protruding over the broad side 5 and / or longitudinal side 6 of the container 3 and that on the base 21 and outside of the Container 3, the pump 11 is arranged, and / or, preferably, that a switch box 22 for the electrical supply of the cooling device 1 is further arranged on the base 21.

A cooling device 1, which is characterized in that two or more cooling units 12 are assigned to the same container 3.

All the features disclosed are essential to the invention (individually, but also in combination with one another). The disclosure of the application hereby also includes the full content of the disclosure content of the associated / attached priority documents (copy of the previous application), also for the purpose of including features of these documents in the claims of the present application. The subclaims characterize, even without the features of a referenced claim, with their features independent inventive developments of the prior art, in particular in order to make divisional applications on the basis of these claims. The invention specified in each claim can additionally have one or more of the features provided in the above description, in particular provided with reference numbers and / or specified in the list of reference numbers. The invention also relates to design forms in which some of the features mentioned in the description above are not implemented, in particular insofar as they are recognizable for the respective purpose or can be replaced by other technically equivalent means. List of reference signs 1 Cooling device 29 Evaporator tube section 2 Aggregate 30th outermost tube loop 3 container 31 innermost pipe loop 4th Container bottom 32 Connection section 5 Container broad side 6th Long side of the container 7th Means of heat transfer a Container length 8th Drain pipe b Container width 9 Inlet pipe c Tank depth 10 Cycle d Width dimension 11 pump e Length dimension 12th Cooling unit f outer diameter 13th compressor G Direction of rotation 14th Heat exchanger H distance 15th Evaporator P. distance 16 Pipeline r Direction of flow 17th Refrigerant s Depth extension 18th Evaporator tube t Elongation 19th Expansion valve u Extension of width 20th Cycle x Longitudinal axis 21 base x ' Longitudinal axis 22nd Control box x " Longitudinal axis 23 Cover section x "' Longitudinal axis 24 ground 25th Inlet section 26th Process section 27 Pipe loop 28 Evaporator tube section E. Spiral section plane E ' Spiral section plane H hydraulic part K refrigeration part L. Longitudinal extension M. module O Container opening level α angle β angle

Claims (15)

Cooling device (1) for cooling units (2), such as machines or technical equipment, with a container (3) through which a heat transfer medium (7) flows and a cooling unit (12) attached to the container (3), which is one in a circuit (20) has guided refrigerant (17) which, while absorbing heat from the heat transport medium (7), passes through an evaporator tube (18) protruding into the heat transport medium (7) and subsequent compression into a gaseous state and then emitting Heat is liquefied again, characterized in that the evaporator tube (18) in an evaporator tube section (28, 29) has tube loops (27) which run from the outside to the inside and / or from the inside to the outside and extend from an outermost tube loop ( 30) taper spirally towards an innermost pipe loop (31) and / or starting from an innermost pipe loop (31) towards an outermost pipe loop (30), w obei the cooling unit (12) with the evaporator tube (18) sits as a removable module (M) on the container (3). Cooling device according to Claim 1, characterized in that a longitudinal axis (x) running in the longitudinal extension (L) of the evaporator tube (18) extends in the spiral-shaped evaporator tube section (28, 29) in a spiral section plane (E, E '). Cooling device according to Claim 2, characterized in that the spiral section plane (E, E ') is oriented vertically in the usual position of use of the cooling unit (12). Cooling device according to one of Claims 2 or 3, characterized in that two spiral evaporator tube sections (28, 29) are provided, the spiral section planes (E, E ') of which in a direction perpendicular to the spiral section planes (E, E') ) are spaced from each other. Cooling device according to one of the preceding claims, characterized in that a spiral evaporator tube section (28, 29) tapers from the outermost tube loop (30) to the innermost tube loop (31) and the further spiral evaporator tube section (29) from the innermost pipe loop (31) to the outermost pipe loop (30). Cooling device according to one of claims 2 to 5, characterized in that a longitudinal axis (x ', x ") of an inlet section (25) and / or an outlet section (26) of the spiral evaporator tube section (28, 29) is in the associated spiral section -Plane (E, E ') extends. Cooling device according to Claim 6, characterized in that the inlet section (25) and / or the outlet section (26) is assigned to the outermost pipe loop (30) of the spiral evaporator pipe section (28, 29). Cooling device according to one of claims 7 or 8, characterized in that the longitudinal axis (x '") of a connecting section (32) of the evaporator tube (18) connecting the two spiral evaporator tube sections (28, 29) closes at an acute angle (β) one of the spiral section planes (E, E '). Cooling device according to one of the preceding claims, characterized in that the heat transport medium (7) can be circulated by means of a pump (11). Cooling device according to one of the preceding claims, characterized in that the container (3) has a depth (c), a width (b) and a length (a), the length (a) being 1.5 times or more Width (b). Cooling device according to Claim 10, characterized in that the evaporator tube (18) extends essentially over the depth (c) of the container (3). Cooling device according to one of Claims 10 or 11, characterized in that the evaporator tube (18) extends only over part of the length (a) and / or part of the width (b) of the container (3). Cooling device according to one of the preceding claims, characterized in that the cooling unit (12) has a heat exchanger (14) arranged outside the container (3) and that the heat exchanger (14) extends in a vertical projection next to the evaporator tube (18). Cooling device according to one of the preceding claims, characterized in that the container (3) has a longitudinal side (5) and / or long side (6) of the container (3) and extends over the wide side (5) and / or long side (6). has protruding base (21) and that the pump (11) is arranged on the base (21) and outside the container (3), preferably on the base (21) further a switch box (22) for the electrical supply of the cooling device (1) is arranged. Cooling device according to one of the preceding claims, characterized in that two or more cooling units (12) are assigned to the same container (3).

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