DE19709895B4 - Cooling device for cooling extruded articles - Google Patents

Abstract

cooling device with at least one cooling chamber for receiving a cooling medium, through which an elongated, continuously extruded article for cooling can be passed, and with means to at least in the cooling chamber one below the Ambient pressure to produce ambient pressure, characterized that in addition to cooling medium (58) to be passed Object (7) at least in a region corresponding to a surface portion (110 to 115) of the article (7) with a higher thermal energy concentration attributable is, at least one cooling element (116 to 119) another heat extraction device (66, 67) is assigned, and that the cooling medium (58) in the cooling chamber (17, 18) liquid and solid and the solid cooling medium (58) at least for Part on the cooling element (116 to 119) builds a layer,

Description

The The invention relates to a device for cooling and optionally calibrating from oblong, extruded objects Plastic, as in the preambles of claims 1 and 13 is under protection.

A method and a device for reducing the shrinkage of extruded profile strands of thermoplastic materials is known from DE 25 04 190 A1 known. For shrinkage reduction, the extruded profile strand is more strongly cooled in the running-in phase of the calibration at the defined points distributed over the circumference of the cross-section than at the remaining points of the circumference. For this purpose, pockets are incorporated in the inlet region on the inside of the calibration tool at the defined points, which are in communication with channels for the inlet and outlet of a cooling medium. As a result, an intensive premature cooling is achieved at predeterminable places. With a calibration tool with vacuum calibration, it is possible to connect the cooling pockets with the vacuum slots so that the cooling medium is sucked out of them. In this case, the cooling medium, for example water, flows from the preceding indirect calibration cooling through the connection channels into the cooling pockets, where it comes into direct contact with the hot extruded profile strand. Due to the targeted cooling, the incoming in the calibration tool, still hot profile strand is already cooled to the extent that this can absorb tensile forces and thus causes the frictional resistance on the Kaliberwandung no elongation of the profile strand by the subsequent trigger. By this avoidable elongation of the profile strand but at the same time the associated stresses are avoided, so that thus later shrinkage possibilities are reduced accordingly. This vacuum calibration tool thus has an indirect cooling for the hollow profile to be cooled, as well as a direct cooling in the area of the intended cooling pockets.

From the DE 25 35 286 A1 a method for calibrating coextruded articles is known in which a uniform solidification and thus a uniform behavior of the different materials to each other by the calibration process is to be made possible. In the course of the calibration process within the calibration device, the extruded extruded profile is completely defined in terms of its external dimensions, the solidifying of the two different plasticized thermoplastic materials occurring due to the heat dissipation due to the accompanying cooling. The extruded profile emerging from the calibration device must be cooled differently due to the coextrusion of the two mutually different materials and the associated increased heat input, so as to avoid a mutual displacement of the two different plastic layers to each other during the cooling process of the extruded profile within the calibration To prevent tensions and associated stress cracks and warping.

Furthermore, a method for cooling and optionally calibrating elongated, continuously extruded articles made of plastic is already known - according to DE 195 04 981 A1 the same applicant. In this method and the associated device, the object to be cooled and calibrated is exposed to a different vacuum during its travel in the longitudinal direction or extrusion direction in successive partial areas of its outer surface. The cooling in the successive regions with different vacuum he follows by a liquid flowing around the object, liquid cooling medium, with which the heat to be removed to cool the article is dissipated. The different areas are separated from each other by arranged in a direction perpendicular to the extrusion direction plane arranged aperture through which the article passes through adapted in its outer periphery openings or openings. The cooling medium is conveyed through the areas in the extrusion direction in the successive regions increasing negative pressure through these areas and flows substantially transversely or obliquely to the extrusion direction over a large part of the surface of the article. Despite the thereby improved contact and the higher exchange of the product directly in contact with the amount of the liquid coolant, the achieved cooling of the article is not sufficient in all cases of execution.

Other known, similar devices and methods also describe the EP 0 659 536 A2 and EP 0 659 537 A2 as well as the DE 19 36 428 B and the EP 0 487 778 B1 , A disadvantage of all the previously known systems and devices was that mostly 50% of the entire cooling section was needed to dissipate the relatively small amount of heat from the interior of the profile and the webs or areas arranged therein from this.

Of the The present invention is based on the object of providing a rapid, tension-free cooling of extruded objects, in particular of hollow profiles to allow.

These The object is achieved by a device having the features of the claim 1 or13 solved.

Of the Advantage of the present invention is that objects with different wall thicknesses and struts, in particular hollow sections with webs are cooled more uniformly can. This is achieved in that the cooling rate in areas of higher heat concentrations of the article by the larger quantities in these areas at dissipated heat energy is about as high as in areas of lower heat concentration due to the lower amount of heat extraction. As a result, those surface sections are in the region of the jacket of the article set in which an increased Heat energy concentration from the webs or hollow chambers arranged within the article is introduced into this, whereby the attachment or assignment of the individual cooling elements the heat removal device then to vote accordingly. By the two in the cooling chamber simultaneously present aggregate states of the cooling medium is due to the high latent heat, a maximum of to be picked up or removed from the object Thermal energy achievable. Furthermore, this can also make it to the preparation of complicated cooling aperture be waived, creating a more cost-effective design of the cooling device and a directed heat dissipation is achievable. Due to this additional directional heat extraction in the immediate vicinity of the object to be cooled can either a shortening the cooling section or an increase the passage speed of the object to be cooled is reached become.

Advantageous is also another embodiment according to claim 2, since due to the selected extrusion speed as well as the corresponding profile geometry the mechanical values to be cooled Favorable profile to be influenced can, which over For example, the cross section of the profile seen better strength values can be achieved.

Advantageous is further an education according to claim 3, since ever according to the selected profile contour or the arrangement of the webs inside the profile a directed heat extraction or a removal of heat can be targeted from the profile.

By The training according to claim 4, it is possible to be located in the housing cooling medium immediately after the heat absorption from the object this through the moving through the cooling elements Refrigerant immediately to withdraw again so as to change the physical state prevent.

To another embodiment according to claim 5 is due to the near or immediate arrangement of the individual heat extraction devices a targeted heat dissipation obtained from the object, whereby even those surface sections with lower heat energy concentration also a sufficient amount of heat is withdrawn.

From But advantage is also an education according to claim 6, since due to the different states of aggregation with a change of the State of aggregation a high amount of heat supplied or dissipated must and must therefore to be cooled Subject this can be withdrawn without a change of the whole system. Furthermore, due to the solid state of the cooling medium, especially in ice, a better heat dissipation from the object achieved.

Is possible while also an education according to claim 7, which in a simple Way an increase the cooling capacity of the overall system is achieved since in the same time unit on cooling Subject a multiple of cooling medium this can be moved past.

Advantageous is also another embodiment according to claim 8, characterized as a high cooling capacity and high heat dissipation is achieved from the area of the object.

Advantageous is also a training according to claims 9 and 10, since thereby the cooling medium, due to the low temperatures of the refrigerant, a high amount of heat is removed and thus the cooling medium a high absorption capacity for the Heat off possesses the object.

By The training according to claim 11 is a collapse of the profile while the passage of the same through the cooling device avoided.

To another embodiment according to claim 12 is an inflation of the viscoplastic Object secured in the entry area of the cooling device avoided.

The object of the invention can also be solved independently by the design of the cooling device, as characterized by the features of claim 13. The resulting from the combination of features of the characterizing part of this claim advantages are that the gaseous cooling medium immediately bar is cooled to an even lower temperature before the directional heat extraction, so as to also achieve a good and additional cooling effect in the surface portions with the higher heat energy concentration. As a result, in the region of the jacket of the article, those surface sections are defined in which an increased thermal energy concentration is introduced from the webs or hollow chambers arranged within the article, whereby the attachment or assignment of the individual cooling elements of the heat removal device is then to be correspondingly adjusted. Due to the different speeds from driving the profile or the object is seen over its cross-section cooled approximately uniformly, whereby it can come in the connection region of webs in the interior of the profile in the region of the shell to no subsequent heat input from these areas. Furthermore, damage to the tread surface is thereby avoided secured and for the throughput of the gaseous cooling medium and a lower energy consumption is necessary. An additional advantage for the faster cooling is achieved by the narrowing of the flow cross-section for the gaseous cooling medium, as this faster or at a higher speed past the object to be cooled and on the other hand brought closer to this, and in these surface sections a higher cooling performance is achieved.

Advantageous is further a training according to claim 14, since ever after the chosen one Profile contour or the arrangement of the webs inside the profile a directed withdrawal of heat or a removal of heat can be targeted from the profile.

By The embodiment according to claim 15, it is possible to the cooling medium located in the housing immediately after the heat absorption from the object this through the moving through the cooling elements Refrigerant immediately to withdraw again.

Finally proves a configuration according to claim 16 is advantageous, because thereby cold losses from the inside of the case or an entry of heat from outside of the housing in the interior to be cooled Object or the cooling medium secured is prevented.

The Invention will be described below with reference to the drawings and optionally for stand alone, different embodiments explained in more detail.

It demonstrate:

1 an extrusion system with a cooling and optionally calibrating device according to the invention, in side view and simplified, schematic representation;

2 a possible embodiment of an optionally independent, inventive cooling and optionally calibrating device, in front view, cut;

3 a schematic of a further cooling and optionally calibrating a possible, possibly independent, inventive embodiment thereof, in diagrammatic view, partially cut;

4 another embodiment of a cooling and optionally calibrating device according to the invention, in front view, cut;

5 a partial area of a further embodiment of an optionally independent, inventive cooling and optionally calibrating device, in front view, cut;

6 another variant of an optionally independent, inventive cooling and optionally calibrating device in side view, cut, according to the lines VI-VI in 7 and removed item;

7 a section of the cooling and optionally calibrating device, in front view, cut, according to the lines VII-VII in 6 ;

8th another and possibly independent embodiment of a cooling and optionally Kalbibriereinrichtung in front view, cut;

9 another variant of an optionally independent, inventive cooling and optionally calibrating device in front view, cut;

10 another area of the cooling and optionally calibration device according to the 9 , which in the 9 immediately after the area shown.

In the 1 is an extrusion line 1 shown from an extruder 2 , a downstream of this extrusion tool 3 and a downstream of this calibration table 4 exists on or on which further inputs or devices are supported. In the extrusion direction - arrow 5 - is the calibration table 4 a schematically and simplified illustrated caterpillar take-off 6 subordinate with which an object 7 , for example, a profile Plastic for window construction, starting from the extrusion tool 3 can be deducted by shaping or cooling devices described in more detail below. The extruder 2 , the calibration table 4 and the caterpillar takeoff 6 as well as other subordinate installations and devices, such as saws and the like, store on a schematically indicated footprint 8th up and based on this. Furthermore, it is in the area of the calibration table 4 schematically indicated that this over rollers 9 movable on a rail 10 in the extrusion direction - arrow 5 - Is mounted longitudinally displaceable. To make this adjustment easier and more accurate, for example, one of the rollers 9 a travel drive 11 associated, a targeted and controlled longitudinal movement of the calibration table 4 to the extruder 2 or from the extruder 2 away allows. For the drive and the control of this travel drive 11 For example, any of the solutions known in the art may be used.

The calibration table 4 serves to accommodate or support more between the extrusion tool 3 and the crawler deduction 6 illustrated inputs or devices. Such is the extrusion tool 3 in the extrusion direction - arrow 5 - Immediately a calibration device 12 , such as a vacuum calibration, downstream and at the calibration table 4 supported. This calibration device 12 is in the present embodiment of three consecutively arranged calibration tools 13 to 15 formed in which in a known manner, the calibration of the extruded article 7 is carried out. In this case, the arrangement of the vacuum slots, the cooling sections and cooling holes and their connections can be made according to the known prior art. This calibration can include, for example, a combination of dry and wet calibration or only a complete dry calibration. Furthermore, an access of ambient air, starting from the extrusion tool 3 up to the exit from the calibration device 12 completely prevented.

Immediately following the calibration tool 15 the calibration device 12 is a cooling device 16 , which optionally also can be used simultaneously as a calibration device, downstream, which in this embodiment consists of two cooling chambers arranged one behind the other 17 respectively. 18 is formed, through which the object to be cooled 7 is also passed through and so represents a passage for this. But it is of course also possible, the cooling device 16 by a single cooling chamber zubilden to meet the necessary cooling requirements. This depends on the application and field of application of the cooling device 16 , the object to be cooled 7 as well as the space conditions.

The cooling chamber 17 points in a the calibration tool 15 the calibration device 12 facing area an entrance area 19 for the object 7 on. Between the two cooling chambers 17 respectively. 18 is a crossing area 20 arranged, which a tight transition from the cooling chamber 17 in the cooling chamber 18 guaranteed. At the end of the cooling chamber 18 in the extrusion direction - arrow 5 - seen, is an exit area 21 for the object 7 towards the caterpillar take-off 6 arranged. For example, is only one of the cooling chambers 17 respectively. 18 arranged, so does the crossing area 20 either an exit area or an entrance area.

The one from the extrusion tool 3 exiting, plasticized and appropriately shaped object 7 consists of a plastic 22 , which in granular form or powder form in a receptacle 23 of the extruder 2 is stored and by means of one or more screw conveyors 24 in the extruder 2 accordingly softens or plasticized and then from the extrusion tool 3 is discharged. This plastic plastic 22 points after exiting the extrusion die 3 one through the extrusion tool 3 predetermined cross-sectional shape, which in the subsequent calibration device 12 is appropriately calibrated and / or cooled until the viscoplastic object 7 is superficially cooled until its outer shape is stable and the outer shape is formed in accordance with their dimensions. Then to the calibration device 12 the object goes through 7 the cooling device 16 to achieve a further corresponding cooling and, if necessary, calibration and to determine the final cross-sectional shape of the object 7 set.

The cooling chamber 17 is doing several in the extrusion direction - arrow 5 - successively arranged sections or areas 25 to 30 and the cooling chamber 18 also in several directions in the direction of extrusion - arrow 5 - successively arranged sections or areas 31 to 36 divided. The subdivision of the cooling chambers 17 respectively. 18 in different areas is indicated only schematically, wherein the number or the size ratios of the sections or areas 25 to 36 have been reproduced by way of example only.

The two cooling chambers 17 respectively. 18 are each by a preferably airtight housing 37 respectively. 38 formed, the entrance area 19 an end wall 39 , the crossing area 20 for the cooling chamber 17 an end wall 40 as well as the cooling chamber 18 an end wall 41 and the exit area 21 the cooling chamber 18 an end wall 42 assigned.

Through this closed training of cooling chamber 17 respectively. 18 enclose or surround this one interior 43 respectively. 44 , For a single continuous cooling device 16 For example, it forms only one of the cooling chambers 17 . 18 an interior 45 out. The individual sections or areas 25 to 30 respectively. 31 to 36 the housing 37 and 38 are through in the interior 43 respectively. 44 the housing 37 to 38 arranged support panels 46 to 50 respectively. 51 to 55 educated.

These individual support panels 46 to 55 serve to support or guide the by the cooling device 16 passing object 7 in order to guide this during its further cooling or its heat extraction from this accordingly. For this purpose, both the Stirwände 39 to 42 as well as the support panels 46 to 55 each a breakthrough 56 on, which in about a profile contour 57 or an envelope surface of the object to be cooled 7 equivalent. The individual breakthroughs protrude through this 56 the individual end walls 39 to 42 or support panels 46 to 55 and represent the outline shape or outer surface for the object to be cooled 7 is, wherein the individual outer dimensions of the individual breakthroughs taking into account the Schwindmaßes when cooling the article 7 during the passage of the cooling device 16 in the extrusion direction - arrow 5 - be determined accordingly. This depends on the selected cross-sectional shape of the article to be produced 7 and must be selected on the basis of technical calculations or empirical values.

As further indicated schematically in this figure, in each of the housings 37 respectively. 38 the cooling device 16 an agent, such as cooling medium 58 , which introduced by the cooling device 16 passing object 7 surrounds and so still in the subject 7 removes contained heat from the previous extrusion process. The cooling medium 58 can have any physical state, such as solid and / or liquid and / or gaseous, and is freely selectable depending on the desired cooling process. Depending on the cooling medium used, the corresponding design of the cooling device 16 then vote.

As shown here, for example, a liquid cooling medium 58 , such as water, used, this can for example in each of the housing 37 respectively. 38 be in dormant form, so introduced without circulating device or conveyor. But it is also possible regardless of one and / or each of the housing 37 respectively. 38 each means, such as its own circulation device 59 respectively. 60 , allocate to a corresponding circulation of the cooling medium 58 in the individual housings 37 to 38 to guarantee for this. So can any of the circulating devices 59 respectively. 60 a collection container 61 , one of these downstream pump 62 and optionally a cooling device 63 include. Furthermore, the entrance area 19 or the area 25 the cooling chamber 17 via a supply line 64 and the crossing area 20 or the area 30 about a derivative 65 with the circulating device 59 in connection. The same applies to the area 31 respectively. 36 the cooling chamber 18 , which with the circulating device 60 also about other inlets and outlets 64 . 65 keep in touch. This allows the cooling medium 58 in each of the cooling chambers 17 respectively. 18 be placed in a flow movement, in addition by the cooling devices 63 this heat can be withdrawn. But it can also be the cooling chambers only a common circulation device 59 respectively. 60 be assigned.

In each of the two cooling chambers 17 respectively. 18 are schematically indicated means, such as depending on an additional heat extraction device 66 respectively. 67 in a surface area of the object to be cooled 7 this immediately adjacent arranged. Here is the object 7 in the cooling device 16 or each of the cooling chambers 17 respectively. 18 at least one heat extraction device 66 . 67 assigned. The special arrangement of the individual heat extraction devices 66 . 67 as well as their training will be described in more detail in the following figures. The heat extraction devices 66 . 67 can only partially between the individual support panels 46 to 55 and / or between the end walls 39 and 40 respectively. 41 and 42 as well as consistently between the end walls 39 and 42 be arranged. Also, the number of heat extraction devices 66 . 67 from the profile of the object to be cooled 7 are dependent and are preferably arranged in those surface portions in which inner webs of the profile are connected to the outer shell thereof and constitute areas or surface portions with increased heat energy concentration, from which an increased dissipation of heat or in the subject 7 stored heat energy must be obtained from the profile.

The arrangement of the individual heat extraction devices 66 . 67 but also, for example, only in one of the two cooling chambers 17 and or 18 take place, or also the arrangement thereof in the individual cooling chambers with respect to the surface portions of the article 7 be chosen differently. Regardless, it is also possible, one of the cooling chambers 17 and or 18 the cooling device 16 according to one of the trainings, as stated in the DE 195 04 981 A1 the same applicant is described, form and only one of the cooling chambers 17 and or 18 with a corresponding heat extraction device 66 . 67 to provide. For the special training of the housing 37 . 38 consisting of the bottom plate, the cover plate, the side walls, the end walls, the support panels, the partitions, the longitudinal web, the arrangement of the flow channels and training of the individual areas or washing around the object 7 and the associated vacuum buildup within the housing is on the DE 195 04 981 A1 Reference is made, and this disclosure is incorporated into the present application. In this case, for the sake of clarity, a schematic representation of the individual system components or devices was selected in this illustration.

As further indicated here only schematically, the two interiors 43 . 44 the cooling chambers 17 . 18 evacuated via means to a mutually different from the ambient air pressure vacuum, wherein the interior 44 prevailing vacuum is greater than the vacuum in the interior 43 , These are the two interiors 43 . 44 via lines 68 . 69 and with the interposition of a respective control device 70 with a suction device 71 , such as a vacuum pump 72 , in connection. This makes it possible now, the two interiors 43 . 44 to a mutually different vacuum by means of the control devices 70 Preset and this with the control devices 70 set vacuum also on gauges 73 to be able to monitor and thus read or to be able to read.

The arrangement of the cooling chambers shown here 17 respectively. 18 the cooling device 16 has been chosen only by way of example, wherein it should be mentioned that it is of course also possible to find the Auslangen only with one and / or more cooling chambers and so better adapt the length of the cooling section to the object to be cooled or to the respective process conditions can. The same applies to the arrangement and design of the heat extraction devices 66 . 67 ,

In the 2 is a part of the case 37 the cooling chamber 17 the cooling device 16 shown on an enlarged scale, wherein for like parts the same reference numerals as in the 1 be used. The embodiment described here shows a simple design of the cooling device 16 in which the cooling chamber 17 through the support panels 46 to 50 in the individual areas 25 to 30 is divided.

As already described above, the cooling device 16 from only one or more cooling chambers 17 . 18 be formed, in this illustration, only a portion of the cooling device 16 has been shown and described.

The housing 37 is indicated here only schematically and is preferably gas-tight and consists of a bottom plate 74 , a cover plate 75 , between these arranged side walls 76 . 77 as well as in the entrance area 19 or crossing area 20 arranged end walls 39 respectively. 40 , which thus the interior 43 train or enclose.

The side walls 76 . 77 as well as the end walls 39 . 40 of the housing 37 form a support surface 78 for the cover plate 75 out. At this bearing surface 78 relies on the interior 43 facing surface 79 the cover plate 75 and is due to the arrangement of the side walls 76 . 77 in relation to the bottom plate 74 from one of these also the interior 43 facing surface 80 at a distance 81 distanced from this. The two side walls 76 . 77 are due to a width 82 the bottom plate 74 Seen distanced from each other across the extrusion direction, whereby the interior 43 is determined in its dimensions.

The individual support panels 46 to 50 For example, in recesses arranged in the side walls 83 respectively. 84 inserted or inserted and so be held in this. In this case, a width of the individual support panels is preferred 46 to 50 transverse to the extrusion direction greater the width 82 the bottom plate 74 plus the depth of the recesses 83 and 84 , This results in a floating in the transverse direction to the extrusion direction storage of the individual support panels, creating an orientation of the openings 56 in the individual support panels to each other in relation to the profile contour 57 of the object 7 is achieved. The holder of the individual support panels 46 to 50 in the case 37 But can also by any known from the prior art form, such as by gluing, sealing compounds, retaining strips, retaining lugs, slots, sealing profiles, grooves or screws, etc., take place.

A height adjustment of the individual support panels 46 to 50 to each other by the flat support of the individual support panels on the interior 43 facing surface 80 the bottom plate 74 , The individual support panels 46 to 50 have one starting from the bottom plate 74 towards the cover plate 75 measured height 85 on which lower the distance 81 between the two facing surfaces 79 respectively. 80 is. This creates a height difference 86 between upper edges 87 the individual support panels 46 to 50 and the bearing surface 78 or surface 79 out.

As shown here, the object points 7 one of the bottom plate 74 facing underside 88 and one of the cover plate 75 facing top 89 on which a height 90 in a direction perpendicular to the surfaces 79 . 80 for the Ge subject of 7 establish. Furthermore, the bottom is 88 of the object 7 from the surface 80 the bottom plate 74 to an extent 91 and the top 89 of the object 7 to an extent 92 from the top edge 87 the support panel 46 arranged distanced. Thus, the height is 85 the individual support panels 46 to 50 from the height 90 of the object 7 as well as the extent 91 and 92 together.

A schematically indicated cooling medium level 93 of the cooling medium 58 is heightwise between the top edge in this imple mentation example 87 the support panels 46 to 50 and the interior facing surface 79 the cover plate 75 for the cooling of the object 7 intended. For a slight circulation or replacement of the cooling medium 58 between the different areas 25 to 30 inside the cooling chamber 17 To ensure it is also possible in the individual support panels 46 to 50 exemplified breakthroughs 94 respectively. 95 to arrange in these. Furthermore, it is also possible, the width of the support plates seen transversely to the extrusion direction less of the width 82 the bottom plate 74 execute and so also a passage of the cooling medium 58 between the individual successively arranged areas 25 to 30 to enable.

The profile of a possible object shown here by way of example only 7 has a completely continuous, self-contained mantle 96 with a wall thickness 97 on, which is seen over the circumference, preferably evenly formed. At this point it should be mentioned that the illustrated profile shape of the article 7 was chosen only as an example from a variety of possible profile shapes and the cooling processes described in detail below analogously to other profile contours 57 are to be applied.

The object 7 consists of the outer, closed jacket 96 with the all-round, approximately uniform wall thickness 97 which is a hollow chamber 98 encloses. This hollow chamber 98 can be through single bridges 99 to 102 be divided into other smaller chambers. In this case, the webs 99 to 102 a wall thickness 103 on which lower the wall thickness 97 of the coat 96 is. This forms in the connection area of the webs 99 to 102 on the coat 96 node areas 104 to 109 from which surface sections 110 to 115 with increased heat energy concentration due to the increased heat energy input from the hollow chamber 98 in the direction of the coat 96 of the object 7 represent.

Due to the large surface of the jacket 96 and in conjunction with its wall thickness 97 becomes through that the object 7 surrounding cooling medium 58 already a sufficient amount of heat or heat energy from the jacket 96 of the object 7 dissipated, reducing the critical surface sections 110 to 115 additionally in the hollow chamber 98 or the individual webs 99 to 102 is to remove the amount of heat contained.

In the embodiment shown here is the node areas 105 to 108 and the surface portions associated therewith 111 to 114 the heat extraction device 66 in the form of individual cooling elements 116 to 119 assigned to these surface sections 111 to 114 to remove the increased and additional amount of heat. Due to this profile related, individual and regional arrangement of the individual cooling elements 116 to 119 the heat extraction device 66 will also be the cooling medium 58 removed a certain amount of heat, thereby also between the surface sections 111 to 114 with high heat energy concentration or heat dissipation arranged further individual surface sections 120 to 123 With a lower heat energy concentration or heat dissipation, a sufficient amount of heat can be withdrawn. By the arrangement of the individual cooling elements 116 to 119 the heat extraction device 66 alternate the Oherflächenahschnitte 111 to 114 with high heat dissipation with the surface sections 120 to 123 with less heat dissipation, across the cross-section of the object 7 Seen, constantly from and extend in the longitudinal direction, ie in the extrusion direction - arrow 5 - Over the entire length of the arrangement of the heat extraction device 66 respectively. 67 ,

The individual cooling elements 116 to 119 the heat extraction device 66 in the cooling chamber 17 can, as in the 1 for the sake of simplicity only for a cooling element 116 is shown with one outside the housing 37 arranged circulation device 124 , consisting of a collection container 125 , a pump 126 and optionally a cooling device 127 keep in touch. Furthermore, it is schematically indicated that the cooling element 116 in the entrance area 19 with a supply line 128 and in the crossing area 20 with a derivative 129 with the circulation device 124 is in flow communication. This can be a collection container 125 schematically indicated refrigerant 130 after flowing through the heat extraction device 66 are stored and then by means of the feed pump 126 and any cooling by the Kühlvorrichung 127 again the heat extraction device 66 be fed so as to the individual cooling elements 116 to 119 the heat extraction device 66 the associated surface sections 111 to 114 to withdraw a higher amount of heat. In this case, for example, a liquid refrigerant can be used, which temperatures of less than 15 ° C and 0 ° C, preferably between -15 ° C and -30 ° C, having.

As with the heat extraction device 67 in the cooling chamber 18 for only one cooling element 116 indicated schematically, this or this may itself be designed as an evaporator tube, wherein the refrigerant 130 via a supply line 131 the cooling element 116 in the crossing area 20 is fed and converted there by means of an evaporator from the liquid to the gaseous state, whereby the individual cooling elements 116 to 119 to temperatures of less than 0 ° C, preferably between -15 ° C and -30 ° C or -50 ° C, are cooled and so in the cooling chamber 18 located cooling medium 58 additionally extract heat. When using liquefied gases, such as nitrogen, carbon dioxide, etc., temperatures between -60 ° C and -170 ° C can be achieved. The additional removal of the higher amounts of heat in the surface sections 111 to 114 in turn, in addition to the through the cooling medium 58 caused cooling effect. In the exit area 21 the cooling chamber 18 stands the cooling elements 116 or the cooling elements via a drain 132 with another circulation device 124 consisting of a compressor 133 , a downstream of this heat exchanger 134 and optionally for the refrigerant 130 arranged reservoir 135 in connection. Thus, after the evaporation process in the cooling elements 116 to 119 gaseous refrigerant 130 in the compressor 133 be converted into the liquid state, in which case in the heat exchanger 134 nor by the compression process the refrigerant 130 added heat can be additionally withdrawn. A temporary storage of the refrigerant 130 takes place in the storage container 135 , followed by the liquid refrigerant 130 over the supply line 131 turn the cooling elements 116 to 119 in the area of the crossing area 20 this is supplied.

Due to the low temperatures of the cooling elements 116 to 119 the heat extraction devices 66 . 67 that will be the object too 7 cooling medium 58 cooled to very low temperatures, resulting, as shown schematically in the individual elements 116 to 119 is indicated, the cooling medium 58 , which is preferably formed by water, in solid state, ie as an ice layer, to the individual cooling elements 116 to 119 builds and thereby the necessary increased heat dissipation from the critical surface sections 111 to 114 is guaranteed. It takes on the individual cooling elements 116 to 119 built up ice one of the profile contour 57 of the object 7 and the surface sections 111 to 114 corresponding counter-identical form. As a result, in these surface sections 111 to 114 , which the cooling elements 116 to 119 are assigned, in turn, ensures a high heat dissipation. Furthermore, by the relative movement of the object 7 in relation to the cooling elements 116 to 119 and the layer of ice built thereon, a flow rate of the cooling medium 58 in the form of a thin film, which the heat transfer from the object 7 in the direction of the heat extraction device 66 respectively. 67 favored. The flow rate of the cooling medium 58 inside the case 37 . 38 can both in the extrusion direction - arrow 5 - as well as opposite done. The same applies to the refrigerant 130 in the cooling elements 116 to 119 ,

Due to these low temperatures of the refrigerant 130 inside the cooling elements 116 to 119 as well as the formation of ice in the region of the individual cooling elements is the cooling medium 58 in both states of aggregation, whereby the still liquid cooling medium 58 also has very low temperatures near the freezing point, and so is also able to this high amounts of heat from the surface sections 120 to 123 to withdraw. For example, water as a cooling medium 58 used, this has a high latent heat capacity, whereby the transition from one state of aggregation in the other state of aggregation, such as from solid to liquid, the medium a large amount of heat must be supplied and / or removed to change only the state of aggregation, but this does not lead to a significant change in the temperature of the overall system.

Here in the 1 and 2 described embodiments of the cooling device 16 can the cooling medium 58 both in stationary and in the cooling device or the cooling chambers 17 . 18 be offset by flowing movement. This depends on the choice of the respective process sequence for the cooling process selected for the profile and is freely selectable. The individual cooling elements 116 to 119 can be formed by lines, pipes both solid and flexible in various cross-sectional shapes and through openings in the end walls 39 to 42 or support panels 46 to 55 be passed.

As materials for the individual cooling elements 116 to 119 For example, the most diverse materials, such as metals in the form of ferrous and / or non-ferrous metals, such as stainless steel, copper, etc., plastics, etc. can be used, which are selected such that they have a good thermal conductivity, adapted to the housing thermal expansion coefficient and have a good corrosion resistance. The distances or distances between the individual cooling elements 116 to 119 and the individual surface sections 110 to 115 at the object 7 are from the profile cross-section of the object 7 . the heat energy concentration to be withdrawn and the selected course of cooling dependent and may be between 1.0 mm and 50 mm, preferably between 5 mm and 25 mm. But there are also larger distances than 50 mm possible.

The housing 37 respectively. 38 the cooling device 16 can be further from the interior 43 . 44 remote surface with insulating elements 136 be surrounded to the cooled interior 43 . 44 opposite the cooling device 16 to shield surrounding outside air from unnecessary heating. The individual insulating elements 136 are doing the sidewalls 76 . 77 as well as the cover plate 75 assigned. But it is also possible, for example, between the bottom plate 74 and the calibration table 4 Also, to arrange a correspondingly pressure-resistant insulating to avoid heat supply from outside the housing in the direction of the interior as well as a cold radiation, starting from the interior in the direction of the environment of the cooling device in this area. The insulating materials used in this case can be selected and used according to the known prior art, wherein the selection of the insulating elements 136 on the heat removal of the by the cooling device 16 passing article 7 to vote in particular.

As further in the area of the cooling chamber 17 in the 1 Indicated in dash-dotted lines, it is possible to each of the individual successively arranged areas 25 to 30 its own heat extraction device 66 assign, which in each case via its own supply and discharge with the common supply line 128 or derivative 129 with the common circulation device 124 in fluid communication.

In the 3 is another possible and possibly independent embodiment of the cooling device 16 with the heat extraction device arranged therein 66 shown, wherein for like parts the same reference numerals as in 1 and 2 be used. Further, regarding the structure of the housing 37 for the cooling chamber 17 as well as the detailed flow around the object 7 or the flow through the cooling medium 58 from an area to the immediately following area and taking place within the cooling chamber vacuum structure on the DE 195 04 981 A1 Reference is made, and this disclosure is incorporated into the present application. In addition, for the sake of simplicity or for better clarity, the representation of the cover plate was made 75 and the insulating elements 136 waived. The same applies to the side walls 76 . 77 , which have been shown only partially in their vertical extent. To the inside of the case 37 required vacuum build-up between the individual areas 25 to 30 To be able to ensure steadily rising, in the area above the support panel, a separate separating web is provided with an opening disposed therein, which in addition to the support panels 46 to 50 the individual areas separated from each other. To the corresponding vacuum in the interior 43 of the housing 37 to be able to build, for example, in the front wall 39 arranged a separate inflow opening for the ambient air or for its own closed circuit. The individual areas arranged one behind the other 25 to 30 stand over in the support panels 46 to 50 or between the top edge 87 the support panels and the cover plate 75 arranged separating webs arranged in the region of the cover plate flow openings in each case additionally in flow communication.

The housing 37 the cooling chamber 17 again consists of the bottom plate 74 , the side walls 76 . 77 , the cover plate, not shown here 75 as well as the two in the entrance or crossing area 19 . 20 arranged and also not shown end walls 39 . 40 which the interior 43 set or limit. The housing 38 the cooling device 16 may also be formed according to the embodiments described herein.

The individual areas 25 to 30 between the end walls 39 respectively. 40 the cooling device 16 or the cooling chamber 17 of the housing 37 are in the extrusion direction - arrow 5 - Seen by transverse to the extrusion direction arranged support panels 46 to 50 , the end walls 39 . 40 as well as the side walls 76 . 77 , the bottom plate 74 and the cover plate 75 limited. The individual areas 25 to 30 point between the individual support panels 46 to 50 or the end walls 39 . 40 each have a different length, which preferably starting from the end wall 39 steadily increasing towards the front wall 40 is trained. This is necessary because of the entry area 19 entering object 7 in the longitudinal extent is not stiff or firm enough and therefore must be supported more often. The individual support panels 46 to 50 can turn into recesses 83 . 84 the side walls 76 . 77 be inserted or inserted, which in turn results in the previously described floating storage transverse to the extrusion direction - arrow 5 - for the individual support panels 46 to 50 results. The individual support panels 46 to 50 show the height 85 which, in this embodiment, less the distance 81 between the interior 43 facing surface 80 the bottom plate 74 and the through the side walls 76 . 77 formed bearing surface 78 or the upper edge formed by the dividers. As a result, each of the individual areas arranged one behind the other 25 to 30 formed separated from each other. In addition, each of the individual areas 25 to 30 through a pa parallel to the two side walls 76 . 77 aligned level 137 , which are approximately average width 82 between the two side walls 76 and 77 arranged as well as perpendicular to the surface 80 is aligned, on both sides of the plane 137 arranged sections 138 respectively. 139 divided.

In addition, each of the individual areas 25 to 30 in the longitudinal direction of the housing 37 seen between the surface 80 the bottom plate 74 and the bottom 88 of the object 7 through one to near the bottom 88 extending longitudinal ridge 140 in a chamber 141 or rinsing chamber 142 divided, whereby in this embodiment, a flow of the cooling medium 58 from the chamber 141 in the rinsing chamber 142 between the surface 80 the bottom plate 74 and the bottom 88 of the object 7 is largely prevented. This longitudinal ridge 140 extends in the longitudinal direction of the cooling chamber 17 and can be both continuously and only partially between the support panels 46 to 50 be arranged. As a result, this flows through the supply line 64 introduced cooling medium 58 in the chamber 141 of the area 25 and wash around the object 7 in the area of its top 89 in the direction of the rinsing chamber 142 , as indicated schematically by an arrow. The onward transport of the in the area 25 incoming cooling medium 58 done in the section 139 between the side wall 77 and the longitudinal ridge 140 through one into the bottom plate 74 Molded flow channel 143 from the rinsing chamber 142 in the chamber 141 of the area 26 , Due to the here also made separation of the area 26 through the longitudinal ridge 140 in the chamber 141 and the rinsing chamber 142 the cooling medium flows around 58 turn the top 89 of the object 7 starting from the section 139 in the section 138 , Continued flow of the cooling medium 58 out of the area 26 in the immediate subordinate area 27 takes place through a further flow channel 144 , which in the section 138 in the bottom plate 74 is arranged. This description of the washing process has been selected here only for a variety of possibilities, it being mentioned that this alternately overflows of a section 138 in this neighboring section 139 from area to area can be either equal and / or opposite. This depends on the process steps necessary for the cooling process and is freely selectable.

Order now the object 7 in the illustrated here only simplified surface sections 110 respectively. 111 to withdraw the heat transported from the webs in the direction of the nodal areas again in targeted areas, is the subject 7 the heat extraction device 66 in the form of two cooling elements 116 respectively. 117 assigned by which the refrigerant 130 is moved through and so the two cooling elements 116 . 117 cools accordingly. Through this partially and targeted arrangement of the cooling elements 116 . 117 in the area of the surface sections 110 . 111 is also additionally the subject 7 flowing cooling medium 58 cooled or this heat removed directly, which also in the between the surface sections 110 . 111 arranged further surface sections 120 . 121 contained heat is also withdrawn and so the entire object 7 is cooled to a lower than the starting temperature lower end temperature. At correspondingly low temperatures of the refrigerant 130 can the cooling medium 58 again in both aggregate states, as already in the 1 and 2 has been described in detail. Likewise, the circulating devices described above 59 respectively. 60 or the circulation device 124 arranged arbitrarily or combined with each other as desired.

By this specially selected arrangement of the heat extraction device 66 becomes the object 7 in those surface sections 110 . 111 , which an increased amount of heat compared to the other surface sections 120 . 121 have, these deliberately dissipated and at the same time the object circulating around the cooling medium 58 also removed so much heat that this the other surface sections 120 . 121 also cools. Of course, the selected arrangement of two cooling elements is chosen only by way of example, it being mentioned that the object 7 in its entire longitudinal course through the cooling device 16 at least one cooling element 116 to 119 one of the heat extraction devices 66 . 67 assigned. Of course, the arrangement of the individual cooling elements 116 to 119 vary only in sections from area to area or they can also from area to area and / or cooling chamber to cooling chamber different surface sections 110 to 114 be assigned.

Furthermore, it may prove advantageous, as in such a design of the cooling device 16 is possible in the interior 43 Ruling vacuum to increase steadily from area to area. The vacuum can be in the range 25 be still very low, for example between 0 bar and -0.1 bar and per area to be 0.002 bar to 0.1 bar higher and in the region of the outlet area 21 between -0.1 bar and -0.5 bar, preferably -0.2 bar amount. Due to this low vacuum in the inlet area 19 the cooling chamber 17 becomes the still viscous object 7 exposed to a high vacuum, causing a change in shape due to the vacuum and thus a swelling of the article 7 can not occur. Due to the further rapid cooling of the cooling unit tung 16 passing article 7 The vacuum can increase from area to area accordingly, as with the continuous cooling also solidification and thus stiffening of the profile occurs.

In the 4 is another possible and possibly independent embodiment of the cooling device 16 shown, wherein for like parts the same reference numerals as in 1 to 3 be used. In the embodiment shown here is a cooling medium 58 used, which in a gaseous state of matter during the passage through the cooling chamber 17 respectively. 18 is present.

The housing 37 the cooling chamber 17 consists in the present embodiment again from the bottom plate 74 , the cover plate 75 , the side walls 76 . 77 as well as the end walls 39 . 40 that the interior 43 enclose or delimit. In addition, the interior is 43 starting from the front wall 39 in the extrusion direction - arrow 5 - towards the front wall 40 through the support panels 46 to 50 in the successive areas 25 to 30 divided. Of course, the embodiments described here also apply to the cooling chamber 18 the cooling device 16 , but it is also possible, the cooling device 16 form as a continuous cooling chamber. The subdivision into the individual cooling chambers 17 . 18 is chosen only as an example and can be chosen freely depending on the application or Abkühlungserfordernis.

The interior 43 the cooling chamber 17 is in turn by the parallel to the side walls 76 . 77 aligned level 137 in the sections 138 respectively. 139 divided, with the level 137 angular, preferably rectangular, to the two surfaces 79 . 80 the cover plate 75 or bottom plate 74 is aligned. In this level 137 is again the longitudinal ridge 140 arranged the area 25 in the chamber 141 as well as the rinsing chamber 142 divided, which by the supply line 64 incoming cooling medium 58 the object 7 , starting from the top 89 , then the side walls in the section 138 towards the bottom 88 and again the side walls in the section 139 flows around. The longitudinal bar 140 extends in this embodiment, starting from the surface 79 the cover plate 75 towards the top 89 of the object 7 , The two facing surfaces 79 . 80 the cover plate 75 or bottom plate 74 are in the distance 81 arranged from each other, starting from the height 85 the support panels 46 to 50 which lower the distance 81 is, between the top edge 87 the individual support panels and the surface 79 the cover plate 75 the height difference 86 formed. Due to this height difference 86 forms between the longitudinal ridge 140 , the side wall 77 , the cover plate 75 as well as the top edge 87 the support panel 46 a flow channel 143 for the cooling medium 58 from the rinsing chamber 142 of the area 25 in the chamber 141 of the area 26 out. To a flow through the cooling medium 58 in the chamber 141 of the section 138 in the area 25 in the direction of this immediately following area 26 to prevent is between the sidewall 76 , the longitudinal ridge 140 , the cover plate 75 as well as the top edge 87 the support panel 46 a partition 145 arranged the area 25 in the section 138 from the section 138 of the area 26 separates. It is also possible, instead of the partition wall 145 the individual support panels 46 to 50 form with an extension and / or a recess accordingly, as well as a separation of the individual areas 25 to 30 to achieve in the same way. The area 26 also has a further flow channel 144 in the section 138 with the immediately following this area 27 in fluid communication.

Around the surface of the object 7 through the gaseous cooling medium 58 Being able to cool optimally is in both sections 138 respectively. 139 one insert element each 146 . 147 arranged, which are formed such that between the surface of the article 7 and the facing these surfaces of the insert elements 146 . 147 a flow channel 148 with a flow area or a Durchströmit width 149 formed. This flow width 149 is preferably formed by a uniform distance between 1.0 mm and 20.0 mm, preferably between 5.0 mm and 10.0 mm, whereby a uniform flow or rinsing of the article 7 in the area of its surface through the cooling medium 58 is achieved. These through the cooling medium 58 achieved cooling of the jacket 96 of the object 7 is sufficient to the amount of heat contained in this or heat energy through the cooling medium 58 dissipate. Furthermore, with the selected profile of the item 7 shown that from the two nodal areas 104 . 105 , Which main connection points in the hollow chamber 98 form arranged webs, an increased amount of heat in the jacket 96 is introduced, which in turn surface sections 110 . 111 form with increased heat or heat energy concentration. In this embodiment, only these two surface portions 110 . 111 by way of example and for the sake of clarity, for the further, more detailed description, it being understood, however, that it is possible for any other node region or further surface sections with increased heat accumulation or quantity to use the corresponding heat removal device 66 in the form of cooling elements 116 . 117 assigned.

That in the section 138 the surface ab cut 110 associated cooling element 116 the heat extraction device 66 is arranged such that through the flow channel 148 passing cooling medium 58 before hitting the surface section 110 is cooled to a lower temperature and so the surface portion 110 can remove a higher amount of heat. Furthermore, it is in direct connection to the cooling element 116 schematically indicated that the Durchströmbreite 149 or the flow cross-section of the bypass duct 148 by a schematically indicated aperture 150 on a cross section 151 is reduced, which lower the Durchströmit width 149 is. Due to this reduction of the Durchströmit width 149 on the cross section 151 and the upstream cooling element 116 on the one hand, the cooling medium 58 before reaching the surface section 110 more cooled and due to this constriction, there is an increase in the speed of the passing cooling medium 58 , whereby it is possible, the additional higher amount of heat from this node area 104 from the object 7 dissipate. Furthermore, it comes through the arrangement of the aperture 150 for an additional closer introduction of the cooling medium 58 to the surface of the object 7 , whereby this effect is further enhanced, since in the same time unit, a higher proportion of cooling medium 58 on this surface section 110 is moved past.

The further arrangement of the cooling element 117 and the associated aperture 150 in the section 139 for the surface section 111 takes place according to the embodiment, as already for the surface section 110 has been described in detail. Thus, the cooling medium 58 in the embodiments shown and described here at each flow around the object 7 in each of the individual areas 25 to 30 during passage through the flow channel 148 cooled accordingly, which also makes the surface sections 120 . 121 be cooled sufficiently with lower or lower heat dissipation. The flow through or around the object 7 through the cooling medium 58 takes place in the immediate successive areas 25 to 30 , preferably in each case opposite, to a one-sided cooling and thus warping of the article 7 to prevent. But it is also a rectified flow direction possible.

At further within the article 7 arranged node areas 106 . 107 is simplified, that in these areas, a narrowing of the flow area or the Durchströmit width 149 of the flow channel 148 likewise by further apertures 150 can be done. An assignment or precedence of further cooling elements of the heat removal device is not provided in these areas, since the withdrawal or the removal of the increased amount of heat or heat energy, due to the narrowing of the flow cross-section and the Durchströmit width 149 and the consequent increase in the speed of the cooling medium 58 , is sufficient in these surface sections. Of course, however, these areas cooling elements can be assigned to achieve a higher heat dissipation.

The cooling elements shown here 116 . 117 in turn are from the refrigerant 130 flows through, which can be selected according to those in the embodiments described above, and present either in the liquid and / or gaseous state. It is advantageous if the refrigerant 130 a temperature of below 0 ° C, preferably between - 15 ° C and -30 ° C and -50 ° C, having. But there are also temperatures down to -170 ° C possible. It should also be mentioned that the arrangement of the longitudinal web 140 between the cover plate 75 and the top 89 of the object 7 represents only one of many possibilities and it is of course also possible, for example, this between the bottom plate 74 and the object 7 and / or between the side walls 76 . 77 and the object 7 to arrange. Also, a multiple arrangement of the longitudinal web 140 possible. Furthermore, the insert elements 146 . 147 be formed simultaneously as insulating, but it is also possible regardless of the housing 37 on its outer side additionally with the insulating elements described above 136 to provide. An additional arrangement of further cooling elements, such as finned tubes, is described in one of the following figures.

In the 5 is a similar design of the housing 37 the cooling chamber 17 for the cooling device 16 , like in the 4 shown, wherein the same reference numerals are used for the same parts. Of course, this embodiment described here may itself be an independent, inventive solution for the heat extraction device 66 represent.

The housing 37 again consists of the bottom plate 74 , the cover plate 75 , the side walls 76 . 77 as well as the end walls 39 . 40 which the interior 43 limit or enclose. The support panels 46 to 50 divide the interior 43 in the longitudinal direction of the article 7 seen in the individual successively arranged areas 25 to 30 , The level 137 is parallel to the sidewalls 76 . 77 as well as perpendicular to the bottom plate 74 or cover plate 75 aligned, in which also the longitudinal web 140 is arranged. In the section 138 Zvi the side wall 76 and the plane 137 is the insert element 146 shown, wel ches between the surface of the object 7 and the facing these surfaces of the insert element 146 the flow channel 148 for the cooling medium 58 formed. The formation of the Durchströmbreite 149 of the flow channel 148 can be done according to the embodiments described above.

Furthermore, in this embodiment, the node area is shown 104 of the object 7 the cooling element 116 the heat extraction device 66 is assigned to from the surface section 110 again dissipate an increased amount of heat. To get a good cooling performance of the cooling element 116 for the cooling medium flowing through 58 to achieve, the cooling element has 116 additional longitudinally arranged ribs in the longitudinal direction 152 which is used to increase the surface area of the cooling surface for the cooling element 116 serve and thus the flowing cooling medium 58 can cool even better. Here is the cooling element 116 formed in the manner of a finned tube, which of the refrigerant 130 is flowed through, which can be used both in the gaseous and / or liquid state of matter. By the arrangement of the cooling element 116 in the area of the surface section 110 can both the Durchströmbreite 149 of the flow channel 148 be reduced or the flowing cooling medium 58 be deflected accordingly, so in turn a large mass flow of the cooling medium 58 directly to the surface section 110 feed to the nodal area 104 to cool well and so to withdraw this an increased amount of heat.

In another surface section 111 in which in the area of the mantle 96 projections 153 . 154 over the surface of the object 7 protrude and serve, for example, for receiving a sealing element, etc., it is further shown that the heat extraction device 66 through the cooling elements 117 . 118 is formed, which for surface enlargement and more intensive cooling of the two extensions 153 . 154 also with several ribs arranged behind each other 152 are provided, which in which the profile or the extensions 153 . 154 facing areas of these projections opposite contour is formed and thus close to the surface of the extensions 153 . 154 or the surface of the article 7 reach. As a result, a likewise good cooling effect can be achieved in such areas or surface areas, which can be achieved by a corresponding shaping or arrangement of the individual cooling elements 117 . 118 in relation to the ribs 152 is additionally amplifiable. The arrangement of the two cooling elements 117 . 118 is reproduced by way of example only, wherein it is of course also possible, only one cooling element and / or several cooling elements these ribs 152 assigned. On the further presentation of the section 139 was omitted because the arrangement of the individual cooling elements 116 to 118 according to that embodiment, as for the section 138 has been described, can take place. The arrangement of the individual cooling elements of the heat extraction device 66 However, it depends on profile and cross section and can be freely selected according to these conditions. Additionally, on the outside of the case 37 the schematically indicated insulating 136 be arranged.

In the 6 and 7 is another, possible and possibly independent embodiment of the cooling device 16 with the heat extraction device arranged therein 66 respectively. 67 shown, wherein for like parts the same reference numerals as in 1 to 5 be used. In the embodiment shown here is a gaseous cooling medium 58 used to the object 7 in the nodal areas 105 to 108 from the hollow chamber 98 and the webs arranged therein in the node areas introduced additional amount of heat targeted and controlled from the jacket 96 dissipate.

The housing 37 the cooling chamber 17 consists in the present embodiment of the bottom plate 74 , the cover plate 75 , the side walls 76 . 77 as well as the end walls 39 . 40 that the interior 43 enclose or delimit. In addition, the interior is 43 starting from the front wall 39 in the extrusion direction - arrow 5 - towards the front wall 40 through the support panels 46 to 50 in the successive areas 25 to 30 divided. Of course, the embodiments described here also apply to the cooling chamber 18 the cooling device 16 as previously described. The interior 43 the cooling chamber 17 is through the parallel to the side walls 76 . 77 aligned level 137 in the sections 138 respectively. 139 divided, with the level 137 angular, preferably rectangular, to both surfaces 79 . 80 the cover plate 75 or bottom plate 74 is aligned. In this level 137 is in this embodiment, both between the surface 80 the bottom plate 74 and the bottom 88 of the object 7 as well as between the surface 79 the cover plate 75 and the top 89 of the object 7 the longitudinal ridge 140 respectively. 155 arranged, which the cooling chamber 17 in the longitudinal direction or longitudinal extent in between the side wall 76 and the plane 137 arranged section 138 or between the side wall 77 and the plane 137 arranged section 139 divided. In these two sections 138 . 139 is ever an insert element 146 . 147 arranged, which are formed such that between the surface of the article 7 and the facing surfaces of the insert elements of the flow channel 148 with a preferably uniform flow width 149 between 1.0 mm and 20 mm, preferably between 5 mm and 10 mm, forms. Due to the division of the cooling chamber shown here 17 in the two sections 138 respectively. 139 through the two longitudinal webs 140 . 155 and the object 7 only the heat extraction device 66 in the section 138 described in more detail. Since it is in the formation of the further heat extraction device 67 in the section 139 an approximately mirror-image training with the cooling elements 118 . 119 to do this. The in the section 138 shown Wärmeentzugsvor direction 66 consists of the two cooling elements 116 . 117 which of the refrigerant 130 flows through and thus cooled. Furthermore, the individual cooling elements 116 . 117 with one in the 1 described circulating device for the refrigerant 130 , for example via the supply line 128 as well as derivative 129 , keep in touch.

The two cooling elements 116 . 117 the heat extraction device 66 are within the insert element 146 arranged and preferably passing through the cooling device 16 educated. In the insert element 146 are in the range of the two cooling elements 116 . 117 cooling channels 156 . 157 , preferably concentric, arranged to the two cooling elements. At these two cooling channels 156 . 157 is ever a discharge channel 158 . 159 subsequently arranged, which in its cross section preferably tapering in the direction of the node areas 105 . 107 or the surface sections 111 respectively. 113 are formed. The two cooling channels 156 . 157 as well as the two outflow channels 158 . 159 are preferably parallel to the two cooling elements 116 . 117 aligned and preferably extend continuously over a length 160 of the insert element 146 , Furthermore, it is schematically indicated that the individual channels in which the support panel 46 adjacent area through a closure element 161 are closed to flow out of the cooling medium flowing through these channels 58 to prevent and thus a directed outflow from the two outflow channels 158 . 159 in the direction of the surface areas 111 . 113 to achieve targeted. The length 160 of the insert element 146 can be to an extent 162 be less than a distance 162 ' between the front wall 39 and the support panel 46 , Due to this difference in length between the distance 162 ' and the length 160 forms between the insert element 146 and the support panel 46 in the area 25 between these a channel 163 in which from the outflow channels 158 . 159 outflowing cooling medium 58 after the directed, increased heat extraction from the surface sections 111 . 113 the node areas 105 . 107 and the subsequent flow around the surface sections 120 to 122 also deprives a sufficient amount of heat, and so the entire coat 96 of the object 7 also cools, flows in. This cooling of the surface sections 120 to 122 is due to the combined arrangement of the flow channel 148 along the surface of the through the cooling device 16 passing article 7 in cooperation with the canal 163 possible.

In the area of the front wall 39 is schematically the supply line 64 for the cooling medium 58 indicated, which in one in the insert element 146 arranged feed channel 164 opens, which in this embodiment perpendicular to the two surfaces 79 respectively. 80 aligned as well as in the area of the front wall 39 is arranged. Furthermore, the two are in the field of cooling elements 116 . 117 arranged cooling channels 156 . 157 via connection channels 165 . 166 with the feed channel 164 in fluid communication. The arrangement of the individual channels shown here has been singled out and described only by way of example for a multiplicity of possibilities, wherein the better clarity has been dispensed with the representation or arrangement of individual closure elements for the individual channels. It is essential that the through the supply line 64 supplied cooling medium 58 before exiting the discharge channels 158 . 159 through the in the cooling channels 156 . 157 arranged cooling elements 116 . 117 is cooled to a very low temperature of less than 0 ° C, preferably between -15 ° C and -30 ° C and -50 ° C, optionally up to -170 ° C, so as to be in the surface portions 111 . 113 To ensure the increased heat dissipation and the increased heat extraction. After removal of the certain amount of heat from the surface sections 111 . 113 indicates the cooling medium 58 still enough capacity for heat on to the other surface sections 120 to 122 in the area of the outer surface of the object 7 To extract a certain amount of heat to the entire profile to a relation to the starting temperature lower final temperature during passage through the cooling device 16 bring to.

In the in the 4 to 7 described embodiments and the gaseous cooling medium used 58 It is due to the low temperatures of the cooling elements 116 to 119 possible that these still in the cooling medium 58 contained moisture in the form of hoarfrost deposits or builds up and so the object 7 from a relatively dry cooling medium 58 flows around or is washed around.

Of course, it is also possible both the feed channel 164 and / or the connection channels 165 . 166 several times in the insert element 146 to arrange for a more even distribution of the supplied cooling medium 58 for the exit from the discharge channels 158 . 159 to achieve. It is but also possible, for example, the channel 163 between the insert element 146 and the support panel 46 to arrange only partially or this in the insert element 146 to form or arrange in this. It is essential that only from the outflow channels 158 . 159 outflowing cooling medium 58 after further heat extraction in the region of the flow channel 148 before the passage in the section 138 of the area 25 collected and through one in the support panel 46 arranged flow channel 167 in the section 138 of the area 26 is directed. But it is also possible, instead of the outflow channels 158 . 159 individual nozzle openings, starting from the cooling channels 156 . 157 in the direction of the outflow channel 148 , on the knot areas to be cooled 105 to 108 in the insert element 146 . 147 directed to arrange, as indicated by dashed lines in the 6 is indicated. The flow channel 167 may for example be arranged similar to the supply line 64 and in another feed channel 164 in the insert element 146 in the area 26 lead. The distribution or supply of the cooling medium 58 from the Zuführka channel 164 can in the field 26 analogous to the embodiment, as for the area 25 has been described.

To a flow rate of the cooling medium 58 , starting from the supply line 64 through the cooling device 16 towards the derivation 65 To reach, it is beneficial in the interior 43 Ruling vacuum to increase steadily from area to area. The vacuum can be in the range 25 be still very low, for example between 0 bar and -0.1 bar and per area to be 0.002 bar to 0.1 bar higher and in the region of the outlet area 21 between -0.1 bar and -0.5 bar, preferably -0.2 bar amount. Through the interior 43 applied vacuum is a continuous movement of the cooling medium 58 from the entrance area 19 towards the exit area 21 the cooling device 16 ,

Furthermore, it is also possible, independently, between the two surface sections 111 . 113 in the insert element 146 an additional withdrawal channel 168 to arrange, which by means of a transition piece 169 in the area of the support panel 46 with the further feed channel 164 in the area 26 is in flow communication and is shown in dash-dotted lines. This makes it possible, an increased flow rate of the cooling medium 58 through the interior 43 the cooling device 16 to achieve and so the object 7 Cool faster. The simplified illustrated transition piece 169 may be formed by any known from the prior art parts and, for example, tubular, tubular and be both flexible and rigid. Furthermore, it is advantageous if the insert elements 146 . 147 and / or the insulating elements 136 have a low thermal conductivity, so as to isolate the object 7 to serve the atmosphere. As a material, a variety of materials, such as foams made of plastic, polystyrene, etc., find use, which also allow easy editing at the same time.

In the 8th is another possible and possibly independent embodiment of the cooling device 16 shown, wherein for like parts the same reference numerals as in 4 used in the embodiment shown here for additional cooling of the through the cooling chamber 17 flowing through cooling medium 58 between the top edge 87 the individual support panels 46 to 50 and the cover plate 75 an additional cooling system 170 is arranged.

The housing 37 the cooling chamber 17 again consists of the bottom plate 74 , the cover plate 75 , the side walls 76 . 77 as well as the end walls 39 . 40 that the interior 43 enclose or delimit, which, starting from the end wall 39 in the extrusion direction - arrow 5 - towards the front wall 40 through the support panels 46 to 50 in the immediate successive Be rich 25 to 30 is divided. The interior 43 is in turn by the parallel to the side walls 76 . 77 aligned level 137 in the sections 138 respectively. 139 divided, in which also the longitudinal web 140 , starting from the surface 79 the cover plate 75 , in the direction of the object 7 close to its top 89 is arranged extending. This level 137 divided in cooperation with the longitudinal ridge 140 each of the individual areas in the chamber 141 as well as the rinsing chamber 142 , which by the supply line 64 incoming cooling medium 58 the object 7 , starting from the top 89 , then the side walls in the section 138 , towards its bottom 88 and again the side walls in the section 139 , flows around. For the formation of the flow channel 148 as well as its Durchströmit width 149 or flow cross section and the narrowing to the cross section 151 as well as those in the nodal areas 104 to 107 arranged cooling elements 116 . 117 as well as the aperture 150 and the concomitant narrowing of the flow area is, in order to avoid unnecessary repetition, to the detailed description in the 4 referred or referred.

The two facing surfaces 79 . 80 the cover plate 75 or bottom plate 74 are in the distance 81 arranged from each other, starting from the height 85 the support panels 46 to 50 which lower the distance 81 is, between the top edge 87 the individual support panels and the surface 79 the cover plate 75 the height difference 86 formed. In the embodiment shown here, the height difference 86 ge compared to those in the 4 around the height 171 formed enlarged, as this to accommodate the cooling system 170 serves.

This cooling system 170 is from a tube 172 as well as at a minimum distance one behind the other arranged ribs 173 formed to increase the effective cooling area for the passing therethrough cooling medium 58 serve. Inside the pipes 172 serves the refrigerant 130 for removing heat from the cooling medium 58 which at each overflow of a section 138 in the further section 139 or with each overflow from one area to the immediately following area between the individual ribs 173 of the cooling system 170 forcibly passed. The cooling system 170 is in this embodiment within the housing 37 directly on the upper edge 87 the individual support panels 46 to 50 arranged in a superposed manner, which results in the area between the ribs 173 and the surface 79 the cover plate 75 between the rinsing chamber 142 of the area 25 and the chamber 141 of the area 26 the flow channel 143 forms, through which the cooling medium 58 at each passage from an area to the immediately following this area flows. The rinsing chamber 142 of the area 26 in the section 138 is above the flow channel 144 with this immediately following area 27 in fluid communication.

To an alternating and possibly gegengleiches overflow or flow around the object 7 in each of the areas 25 to 30 to achieve is in the range of each of the individual support panels 46 to 50 preferably alternately in each of the sections 138 . 139 between the ribs 173 and the surface 79 the cover plate 75 as well as between the longitudinal ridge 140 and the side wall 76 respectively. 77 one partition each 145 arranged which the chamber 141 the first area of the rinsing chamber 142 of the immediately following this area in the same section 138 . 139 separates.

The supply or the flow rate of the refrigerant 130 through the pipes 172 of the additional cooling system 170 can according to one of the in the 1 However, for example, but also a combination with the refrigerant 130 in the cooling elements 116 . 117 the heat extraction device 66 . 67 is possible. It is both a separate, as well as common throughput of the refrigerant 130 through the heat extraction device 66 . 67 or the cooling system 170 possible.

In the 9 and 10 is another possible and possibly independent embodiment of the cooling device 16 for the cooling chamber 17 with this forming housing 37 shown, wherein for like parts the same reference numerals as in 1 to 8th be used. The basic structure of the housing 37 consisting of the side walls 76 . 77 , the bottom and top plate 74 . 75 and the end walls 39 . 40 as well as in the interior 43 arranged support panels 46 to 50 can according to the in the 1 . 6 and 7 described embodiment. In this embodiment shown here is also a gaseous cooling medium 58 used to the object 7 in the individual node areas 104 to 109 , Which represent the surface sections with increased heat energy concentration or higher amount of heat to deliberately withdraw an increased amount of heat.

The level 137 is parallel to the two side walls 76 . 77 aligned and arranged approximately midway between them. Another perpendicular or perpendicular transverse plane 174 is approximately in the middle of the height 90 of the object 7 aligned aligned and subdivided in the insert element 146 arranged flow channel 148 in the section 138 between the transverse plane 174 and the cover plate 75 as well as in the section 139 between the transverse plane 174 and the bottom plate 74 ,

Each of the individual sections 138 . 139 is a separate heat extraction device 66 . 67 assigned, which in channels 175 to 178 are arranged, the elements within the Einsatzele 146 through the cooling chamber 17 So also through the individual support panels 46 to 50 extend continuously in the extrusion direction. The training and arrangement of the individual channels 175 to 178 has been shown only as an example, and they can of course have any spatial form and longitudinal extent.

The flow channel 148 is in the area of the transverse plane 174 or the heat extraction devices 66 . 67 with a lower flow width 179 in the form of an intermediate channel 180 formed with a smaller flow area. Due to this cross-sectional constriction over the entire longitudinal extent in the individual successively arranged areas 25 to 30 becomes the cooling medium 58 an increased flow resistance opposite, which in the area of the intermediate channels 180 a lower throughput of the cooling medium 58 he follows.

The heat extraction devices 66 . 67 are by individual cooling elements 116 to 119 as well as disposed thereon and each other distant ribs 173 formed, with the individual ribs 173 serve to enlarge the cooling surface or heat transfer surface. The individual cooling elements 116 to 119 are in turn from the refrigerant 130 flows, which according to the embodiments previously described both gaseous and / or liquid and / or a mixture thereof may be present.

In the in the 9 shown area 25 becomes the cooling medium 58 over the supply line 64 on the one hand, the canal 175 in the section 138 or via another supply line 64 the channel 178 in the section 139 fed. The feeding of the cooling medium 58 or the arrangement of the two channels 175 . 178 takes place approximately diagonally to the plane 137 or transverse plane 174 , resulting in a staggered arrangement. That in the channel 175 in the section 138 introduced cooling medium 58 flows on the cooling element 116 as well as the ribs arranged thereon 173 over or through and passes through a on the node area 105 directed connection channel 181 in the flow channel 148 and flows around the object 7 in the area of its top 89 towards the further cooling element arranged in the region of the side wall 117 the heat extraction device 66 , The entrance to the canal 176 from the flow channel 148 takes place through a further connection channel 182 under the interposition of the cooling element 117 ,

In the section 139 enters the cooling medium 58 , starting from the canal 178 , through the cooling element 119 in a further connection channel 183 , which also a directed outflow on the node area 108 of the object 7 causes, in the flow channel 148 of the section 139 and flows around the object 7 in the area of its bottom 88 in Rich tion of the cooling element 118 the heat extraction device 67 , The entrance to the canal 177 , starting from the flow channel 148 , takes place through a further connection channel 184 , The individual connection channels 181 to 184 between the channels 175 and 178 and the flow channel 148 are depending on the flow direction of the cooling medium 58 designed as outflow or inflow channels. Due to the lower flow width 179 the intermediate channels 180 occurs in these also a low flow rate of cooling medium 58 on, whereby also these surface portions is cooled accordingly or dissipated from this heat, as indicated schematically by small arrows.

A forwarding of the cooling medium 58 from the section 138 in the area of the canal 176 or from the channel 177 in the section 139 of the area 25 in the immediate subsequent area 26 takes place through openings 185 respectively. 186 in the support panel 46 , But it is also possible, the individual channels 175 to 178 both in the insert element 146 as well as the individual support panels 46 to 50 form continuous and close this accordingly alternately to the flow around the object 7 to ensure transversely to the extrusion direction.

In the 10 is the area 25 immediate subordinate area 26 the cooling device 16 represented, in which an opposite Umströmung the object 7 through the cooling medium 58 in relation to the upstream area 25 is shown. The cooling medium flows 58 through the channel 176 or the opening 185 in the support panel 46 in the area 26 arranged channel 176 a, flows through the cooling element 117 and the ribs arranged thereon 173 and passes through the connection channel 182 in the flow channel 148 and occurs in the area of the cooling element 116 through the connection channel 181 in the insert element 146 arranged channel 175 one. The opposite flow around the object 7 , starting from the canal 177 , in the direction of the canal 178 takes place analogously. This is in each of the individual immediately adjacent areas 25 . 30 an oppositely directed flow around the object 7 through the cooling medium 58 achieved.

It is advantageous that the cooling medium 58 after each entry through one of the connection channels 181 to 184 before entering the respective channel 175 to 178 one of the cooling elements 116 to 119 with the ribs arranged on it 173 must flow through and after forwarding in the immediately adjacent area also in turn by one of the cooling elements 116 to 119 must pass through. As a result, a double passage through each of the individual cooling elements occurs with each forwarding from one region to the immediately adjacent region 116 to 119 on, causing the cooling medium 58 a high amount of heat can be withdrawn and so at the respective directed outflow from the connecting channels 181 to 184 the individual node areas 105 to 108 a high amount of heat can be withdrawn. A discharge of the cooling medium 58 from the interior 43 or 44 of the cooling device 16 can work together via a derivative not shown 65 which also takes place within the housing 37 . 38 taking place vacuum construction steadily rising, starting from the inlet area to the exit area, can be done.

But it is also possible, the individual connection channels 181 to 184 if this is the outflow of the cooling medium 58 serve as a single successively arranged as well as on the node areas to be cooled 105 to 108 form directed nozzle openings.

Of course, the individual embodiments described above and the variants and different embodiments shown in these embodiments, respectively form self-contained solutions according to the invention and combined with each other as desired. Furthermore, detailed descriptions of individual elements, components, etc., as well as various cooling processes, the vacuum structure, the pressure or flow around the object 7 from the cooling medium 58 in embodiments in which, due to unnecessary repetitions, their description has been omitted.

In conclusion, be For the sake of order, it should be noted that for a better understanding of the function the cooling device according to the invention many Parts of the same shown schematically and disproportionately enlarged have been.

Above all, the individual in the 1 ; 2 ; 3 ; 4 ; 5 ; 6 . 7 ; 8th ; 9 . 10 shown embodiments form the subject of independent solutions according to the invention. The relevant objects and solutions according to the invention can be found in the detailed descriptions of these figures.

Claims (16)

Cooling device with at least one cooling chamber for receiving a cooling medium, through which an elongated, continuously extruded object can be passed for cooling, and with means for producing at least in the cooling chamber a lying below the ambient air pressure pressure, characterized in that in addition to the cooling medium ( 58 ) the object to be passed ( 7 ) at least in a region corresponding to a surface portion ( 110 to 115 ) of the object ( 7 ) is attributable to a higher thermal energy concentration, at least one cooling element ( 116 to 119 ) a further heat extraction device ( 66 . 67 ) and that the cooling medium ( 58 ) in the cooling chamber ( 17 . 18 ) is liquid and solid and the solid cooling medium ( 58 ) at least partially on the cooling element ( 116 to 119 ) builds up a layer, Cooling device according to claim 1, characterized in that the cooling element ( 116 to 119 ) at least partially between end walls ( 39 . 40 . 41 . 42 ) of the cooling chamber ( 17 . 18 ) is arranged. Cooling device according to claim 1 or 2, characterized in that a plurality of cooling elements ( 116 to 119 ) over the circumference of a continuous contour of the article ( 7 ) distributes the surface sections ( 110 to 115 ) are arranged immediately adjacent. Cooling device according to one or more of the preceding claims, characterized in that the cooling elements ( 116 to 119 ) by in the direction of passage of the article ( 7 ) extending lines for the transport of refrigerant ( 130 ) are formed. Cooling device according to one or more of the preceding claims, characterized in that the cooling element ( 116 to 119 ) the continuous contour of the object ( 7 ) is disposed adjacent at a distance between 1.0 mm and 50 mm, preferably between 5 mm and 25 mm. Cooling device according to one or more of the preceding claims, characterized in that the cooling medium ( 58 ) between the cooling element ( 116 to 119 ) and the object ( 7 ) has two different states of aggregation. Cooling device according to one or more of the preceding claims, characterized in that the cooling chamber ( 17 . 18 ) for the liquid cooling medium ( 58 ) a circulating device ( 59 . 60 ) assigned. Cooling device according to one or more of the preceding claims, characterized in that the cooling element ( 116 to 119 ) of the heat extraction device ( 66 . 67 ) of a refrigerant ( 130 ) is flowed through in the liquid and / or gaseous state of matter. Cooling device according to claim 8, characterized in that the refrigerant ( 130 ) has a temperature of less than 15 ° C or 0 ° C, preferably between -15 ° C and -50 ° C, having. Cooling device according to claim 8, characterized in that the refrigerant ( 130 ) has a temperature of less than 0 ° C, preferably between -60 ° C and -170 ° C, having. Cooling device according to one or more of the preceding claims, characterized in that a in the interior of the cooling chamber ( 17 . 18 ) constructed vacuum, starting from the inlet area ( 19 ) to the exit area ( 21 ), is formed from area to area steadily increasing. Cooling device according to one or more of the preceding claims, characterized in that the vacuum in the inlet region ( 19 ) is between 0 bar and -0.1 bar and per area around 0.002 bar to 0.1 bar higher and in the exit area ( 21 ) is between -0.1 bar and -0.5 bar, preferably -0.2 bar. Cooling device with at least one cooling chamber for receiving a gaseous cooling medium, through which an elongated, continuously extruded article for cooling can be passed, and with means to at least in the Kühlkam mer to produce a pressure below the ambient air pressure, characterized in that over at least a part of the surface of the continuous contour of the article a flow channel ( 148 ) is formed and that in addition to the gaseous cooling medium to be passed through the object ( 7 ) at least in a region corresponding to a surface portion ( 110 to 115 ) of the subject ( 7 ) is attributable to a higher thermal energy concentration, at least one cooling element ( 116 to 119 ) a further heat extraction device ( 66 . 67 ) upstream in the flow direction of the gaseous cooling medium and in at least one of the surface sections ( 110 to 115 ) with the higher heat energy concentration, a flow cross-section or a Durchströmbreite ( 149 ) of the bypass duct ( 148 ) is lower than in surface sections ( 120 to 123 ) of the object ( 7 ) with a lower heat energy concentration and the flow cross section or the Durchströmbreite ( 149 ) of the bypass duct ( 148 ) is between 1.0 mm and 20.0 mm. Cooling device according to claim 13, characterized in that a plurality of cooling elements ( 116 to 119 ) over the circumference of a continuous contour of the article ( 7 ) distributes the surface sections ( 110 to 115 ) are arranged immediately adjacent. Cooling device according to claim 13 or 14, characterized in that the cooling elements ( 116 to 119 ) by in the direction of passage of the article ( 7 ) extending lines for the transport of refrigerant ( 130 ) are formed. Cooling device according to one or more of claims 13 to 15, characterized in that in the cooling chamber ( 17 . 18 ) an insert element ( 146 . 147 ) and / or an insulating element ( 136 ) is arranged with a low thermal conductivity.