专利摘要:
A cold plate (30) for cooling heat generating components (20) comprises two plates (11) extending parallel to one another. A core (13) is sandwiched between the two plates (11) to form a sandwich structure, the core (13) comprising a set of circulation channels (13a) of a cooling fluid of a first edge ( 10a) at a second opposite edge (10b) of the sandwich structure. First and second sealing members (31,32) are respectively disposed at the first and second opposite edges (10a, 10b) of the sandwich structure, the first sealing member (31) having at least one inlet connector ( 33) and the second sealing member (32) having at least one outlet connector (34) for circulating the coolant. Use in particular of the cold plate (30) as a structural part of an avionics equipment.
公开号:FR3030708A1
申请号:FR1463072
申请日:2014-12-22
公开日:2016-06-24
发明作者:Philippe Pons;Pierre Salles
申请人:Airbus Operations SAS;
IPC主号:
专利说明:

[0001] TECHNICAL FIELD The present invention relates to a cold plate for cooling heat generating components. In general, the invention relates to the field of cooling heat-generating components such as electrical systems with high power consumption or electronic systems having a high thermal density. STATE OF THE ART Conventionally, cold plates can be used for cooling circuits using power electronics components, or for cooling hot spots generated at the printed circuit boards. In particular, cold plates can be used for the cooling of the avionics equipment present in the aircraft. In this type of use, it is necessary to obtain good thermal cooling of the heat generating components while limiting the volume and mass of the cooling systems. Thus, a cold plate is known as described in US 2011/0232863, which comprises several plates extending parallel to one another, one of the plates being configured to support a heat generating device. The cold plate comprises a frame disposed between two plates and defining a cavity between the two plates. The cavity houses a fin structure, a cooling fluid flowing through the cavity and the fin structure for cooling the heat generating device disposed on the cold plate.
[0002] The coolant is introduced into the cavity of the cold plate and recovered through inlet and outlet ports disposed in the same corner of the cold plate. The cold plate is itself fixed on a structural element, the latter being fixed for example to a cabin wall or an avionics bay. The structural element and the cold plate thus constitute means for supporting the structural load of the heat generating device. SUMMARY OF THE INVENTION The object of the present invention is to propose an improved cold plate, in particular having a good cooling efficiency. To this end, the present invention relates to a cold plate for cooling heat generating components, comprising two plates extending parallel to each other.
[0003] According to the invention, a core is disposed between the two plates to form a sandwich structure, the core comprising a set of channels for circulating at least one cooling fluid from a first edge to a second opposite edge of the structure sandwich, and first and second sealing members are respectively disposed at said first and second opposite edges of the sandwich structure, the first sealing member having at least one inlet connector of at least one coolant and the second sealing member having at least one outlet connector of at least one coolant. The circulation of at least one cooling fluid in a set of circulation channels and the arrangement of an inlet connector and an outlet connector at two opposite edges of the sandwich structure enables a flow of particularly efficient cooling fluid through the core of the cold plate. The sandwich structure made from a core disposed between two plates gives the cold plate thus obtained a good mechanical strength.
[0004] The production of circulation channels in the core of the sandwich structure of the cold plate avoids the implementation of cooling fluid circulation tubes, which allows a saving of mass of the cold plate. According to various features and various embodiments of the invention, which can be taken individually or in combination: the set of circulation channels comprises channels closed by at least one of the two plates and opening respectively to the first edge and at the second opposite edge of the sandwich structure; the channels each comprise two walls respectively adjacent to at least one of the two plates; the two walls are inclined with respect to each other and adjacent to one another to form a channel bottom; the core has a corrugated shape, the top of the corrugations being in contact with at least one of said two plates; the set of circulation channels comprises channels that are parallel to one another; the channels are zigzagged from the first edge to the second opposite edge of the sandwich structure; said at least one input connector of at least one cooling fluid is in communication with a subset of the set of circulation channels, and said at least one output connector of said at least one cooling fluid is in communication with the subset of the set of traffic channels; the first sealing connection element and the second sealing connection element respectively comprise a plurality of inlet connectors, or several outlet connectors, of different cooling fluids. By way of example, the cooling fluid is a liquid, such as water, or a gas, such as air. According to a second aspect, the present invention also relates to a cooling system of heat generating components, comprising a cold plate as described above, heat generating components being arranged in contact with at least one of the two plates. According to a third aspect, the present invention finally relates to the use of a cold plate as described above as a structural part of an avionic equipment in an aircraft. The sandwich structure forming the cold plate is particularly well suited to be used directly as a structural part of equipment comprising heat generating components. The cold plate thus plays a dual role in the equipment, allowing both the support of the heat generating components and their cooling. This saves space and mass of the equipment during the implementation of such a cooling system. BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the invention will become apparent from the description below. In the accompanying drawings, given by way of non-limiting examples: FIG. 1 is a schematic perspective exploded view of a sandwich structure of a cold plate according to a first embodiment of the invention; - Figure 2 is a schematic perspective view of a cold plate equipped with a heat generating component according to the first embodiment of the invention; - Figure 3 is a top view with torn parts of the cold plate of Figure 2; FIG. 4 is an exploded schematic top view of the cold plate of FIG. 3, illustrating a first mode of circulation of a cooling fluid; FIG. 5 is a view similar to FIG. 4 illustrating a second mode of circulation of cooling fluid; FIGS. 6A and 6B are perspective diagrams illustrating alternative embodiments of a core implemented in a sandwich structure of a cold plate according to various embodiments of the invention; and FIG. 7 is a schematic perspective view illustrating an example of the use of cold plates in a cabinet-type electronic structure. DETAILED DESCRIPTION With reference to FIGS. 1 to 3, a cold plate for cooling heat generating components according to a first embodiment of the invention will now be described.
[0005] In the remainder of the description, the term "comprising" does not exclude other elements or steps and the term "one" does not exclude the plural. As is well illustrated in FIG. 1, the principle of the cold plate according to a first embodiment of the invention rests on the formation of a sandwich structure 10.
[0006] More particularly, two plates 11, 12 are arranged parallel to one another and a core 13 is sandwiched between the two plates 11, 12 to thereby form the sandwich structure 10. The plates 11, 12 thus constitute the two outer skins of the sandwich structure 10, while the core 13 constitutes the core of this sandwich structure 10. As a non-limiting example, the plates 11, 12 may be made of metal or from composite materials. Thus, when the cold plate is intended to be used in avionics equipment, the composite materials meeting the aeronautical constraints can be used. Similarly, the core 13 can be made from metallic or composite materials. In general, and depending on the use and the desired application of the cold plate, the plates 11, 12 and the core 13 may be components taken off the shelf (in English, COTS acronym for the term "Commercial Off -The-Shen or alternatively be made-to-measure components.
[0007] The plates 11, 12 and the core 13 may be secured to each other by a bonding process, and for example by the implementation of a bonding process of composite materials. By way of nonlimiting example, such a bonding process can implement etching and cleaning steps of the plates 11, 12 and the core 13, then a gluing step followed by a coking step for secure all these parts and obtain the sandwich structure 10. Alternatively, the sandwich structure 10 could be achieved by implementing an additive manufacturing process of the ALM type (acronym 10 of the English term "Additive Layer Manufacturing"). The core 13 comprises a set of circulation channels 13a, 13b allowing the circulation of a cooling fluid. As well illustrated in FIG. 1, in this embodiment, the set of circulation channels 13a, 13b allows the circulation of a cooling fluid from a first edge 10a to a second opposite edge 10b of the sandwich structure. 10. With reference to FIG. 1, a longitudinal direction Y of the sandwich structure 10 is defined as corresponding to the direction of circulation of the cooling fluid, the first and second opposite edges 10a, 10b thus corresponding to opposite lateral edges of the the sandwich structure 10, extending in a transverse direction X of the sandwich structure 10. In the sandwich structure thus formed, the set of circulation channels 13a, 13b comprises channels 13a, 13b closed by one of the two plates 11, 12. The channels 13a, 13b open respectively at the first edge 10a and the second edge 10b of the sandwich structure 10. The core 13 thus generally has a wavy shape, in which the The top of the corrugations comes into contact with one of the two plates 11, 12. In this embodiment, the channels 13a, 13b are each formed by two walls 13 'inclined with respect to one another and adjacent to each other. to each other to form a channel bottom 13c.
[0008] Here, the inclined walls 13 'of each channel 13a, 13b are adjacent to one of the two plates 11, 12. Furthermore, the channel bottom 13c formed by two inclined walls 13' also comes into contact with one of the two plates 11, 12.
[0009] Thus, in this embodiment, the core 13 has generally a corrugated shape, the corrugations coming into contact with one or the other of the two plates 11, 12. The hollow of each undulation forms a circulation channel 13a, 13b of the cooling fluid, closed by one of the two plates 11, 12 extending between the vertices 13c of two adjacent undulations. Thus, the cooling fluid circulating in the channels 13a, 13b is directly in contact with the two plates 11, 12 to promote direct cooling of heat generating components placed in contact with one and / or the other of two plates 11, 12 as will be described later. In this embodiment, and in a nonlimiting manner, the core 13 consists more precisely of a structure having a transverse profile in the form of a zigzag in the plane perpendicular to the longitudinal direction Y of the sandwich structure 10.
[0010] Each channel 13a, 13b is thus defined between two inclined walls 13 ', defining channels of triangular prismatic shape. Each channel 13a, 13b is thus defined between the base of the prismatic shape closed by one of the plates 11, 12 and the apex of the prismatic shape coming into contact with the other of the two plates 11, 12.
[0011] A first network of channels 13a is thus defined by inclined walls 13 'and a first plate 11 and a second network of channels 13b is defined by inclined walls 13' and a second plate 12. The core 13 also makes it possible to confer good rigidity to the sandwich structure 10 thanks to its ribbed structure, while providing cooling fluid circulation channels between the two plates 11, 12 of the sandwich structure 10.
[0012] All of the circulation channels 13a, 13b thus comprise channels that are parallel to one another. In this embodiment, the channels 13, 13b are identical to each other, especially in terms of width in the sandwich structure plane 10. As illustrated in FIG. 1, the circulation channels 13a, 13b are arranged in a zigzag pattern. from the first edge 10a to the second opposite edge 10b of the sandwich structure 10. Thus, the circulation channels 13a, 13b are arranged in a zigzag manner in a plane parallel to the two plates 11, 12, that is to say in a perpendicular plane to the stacking direction Z of the sandwich structure as illustrated in FIG. 1. The core 13 thus consists of several successive portions in the longitudinal direction Y of the sandwich structure 10.
[0013] The direction of the circulation channels 13a, 13b is modified from one portion to another in the plane of the sandwich structure 10, according to the zigzag arrangement chosen. The zigzag arrangement of the circulation channels 13a, 13b of the first edge 10a to the second opposite edge 10b of the sandwich structure 10 makes it possible to increase the length traveled by the cooling fluid through the sandwich structure with respect to the longitudinal dimension of the the sandwich structure 10. This promotes the cooling of the heat generating components intended to be placed in contact with one and / or the other of the two plates 11, 12 of the sandwich structure 10.
[0014] Furthermore, the zigzag arrangement of the circulation channels 13a, 13b in the core 13 of the sandwich structure 10 makes it possible to improve the mechanical performance of the sandwich structure 10, which can be particularly advantageous when the sandwich structure 10 is used. as a structural part of avionics equipment as will be described later. In addition, thanks to the direct contact of the cooling fluid with the plates 11, 12 of the sandwich structure 10, there are no additional thermal interfaces between the heat generating components 20 to be cooled and the cold plate 30 Of course, the exemplary core described above with reference to FIG. 1 is not limiting, the core 13 may have different structures between the two plates 11, 12 since it defines a set of channels of circulation 13a, 13b. In particular, FIGS. 6A and 6B illustrate two alternative non-limiting examples of the structure of a core 13. In FIG. 6A, the core 13 has a corrugated shape, the corrugations having a square or rectangular cross-section. . The top 13c of the corrugations is intended to come into contact with at least one of the two plates 11, 12. Thus, each channel 13a, 13b comprises two walls 13 'which are adjacent to one of the plates 11, 12.
[0015] According to the embodiment illustrated in FIG. 6B, the core 13 has a corrugated shape, the distance between each corrugation being variable so that the width of the channels 13a, 13b can be variable in the transverse direction X of the structure 10. These examples of core 13 are illustrative only and their characteristics can be combined with each other, especially with regard to the width of the channels 13a, 13b and the contact of the core 13 with one and / or the other of the plates 11, 12 of the sandwich structure. As well illustrated in Figures 2 and 3, the cold plate 30 incorporating the sandwich structure 10 as described above with reference to Figure 1 comprises heat generating components (shown schematically by the block 20), placed here without limitation on one of the two plates 11, 12 of the sandwich structure 10. Of course, heat generating components 20 could be placed on the cold plate in contact with one and / or the other of the two plates 11, 12.
[0016] First and second sealing members 31, 32 are respectively arranged at the first and second opposite edges 10a, 10b of the sandwich structure 10. In the example described with reference to FIGS. 2 and 3, the first and second connecting elements 31, 32 are arranged at the side edges of the sandwich structure 10, thus intended to form the side edges of the cold plate 30. The set of circulation channels 13a, 13b formed in the core 13 of the sandwich structure 10 opening out at the first and second edges 10a, 10b of the sandwich structure 10, the first and second sealing members 31, 32 are intended to close at least part of the circulation channels 13a, 13b with respect to each other. the passage of a cooling fluid. The sealing connection elements 31, 32 thus generally comprise a wall for closing the set of circulation channels 13a, 13b except in a certain portion of the first and second opposite edges 10a, 10b of the sandwich structure 10 so that to allow the introduction and recovery of a cooling fluid. For this purpose, in order to allow the introduction and the exit of a cooling fluid in the cold plate 30, each sealed connection element 31, 32 comprises at least one fluid connector. Here, and without limitation, a first sealing member 31 comprises an inlet connector 33 for introducing a cooling fluid into the cold plate 30 and the second sealing member 32 has an outlet connector 34 to allow the evacuation of the cooling fluid after passing through the cold plate. The first and second sealing members 31, 32 may be formed of edge fittings made of metal or composite materials. Generally, the edge fittings 31, 32 are made to measure 30 so as to be adapted to the dimensions of the sandwich structure 10, and in particular to its width in the transverse direction X and its thickness in the stacking direction Z.
[0017] The edge fittings 31, 32 may further integrate transfer interfaces with the structure intended to integrate them, such as for example a carrier structure of an aircraft. In the embodiment illustrated in FIG. 2, the sealing connection elements 31, 32 are inserted and fixed between the two plates 11, 12, extending beyond the core 13. In the embodiment illustrated in FIGS. 3 and 4, each sealing connection element 31, 32 respectively comprises an input connector 33 and an output connector 34 disposed substantially in the middle, that is to say in a direction substantially corresponding to the central longitudinal direction Y of the cold plate 30. Thus, as illustrated in FIG. 4, the inlet connector 33 of a cooling fluid is in communication with a subset (the boundaries of which are indicated by strong lines in FIG. 4 ) of the set of circulation channels 13a, 13b. Here, the subset of the set of circulation channels 13a, 13b corresponds to a part of the circulation channels 13a, 13b extending in the center of the cold plate 10, in the longitudinal direction Y of the cold plate 30.
[0018] The outlet 34 of the coolant is then in communication with the same subset of the set of circulation channels 13a, 13b to allow the evacuation of the cooling fluid. It will be noted that depending on the model of the core 13, the arrangement of the circulation channels 13a, 13b and the type of sealed connection elements 31, 32 chosen, the cooling fluid can follow different paths through the cold plate, and more precisely through the core 13 of the sandwich structure 10. In general, the cold plate 30 may implement only a single flow path of a cooling fluid, formed by a sub the set of circulation channels 13a, 13b, as illustrated for example in FIG. 4.
[0019] In this case, only one type of cooling fluid is used, and for example a liquid such as water or a gas such as air. As illustrated in FIG. 4, the cooling fluid flow can be limited in width, and in particular occupy a partial width of the cold plate 30. However, the cooling fluid circuit could be implemented substantially in all the width. in the transverse direction X of the cold plate 30. It will be noted that the structure of the core 13 described above and the production of the channels 13a, 13b between the corrugations or inclined walls 13 'of the core 13 makes it possible to obtain, without additional element, a sealing closure of the cold wall 30 at the longitudinal edges 30a, 30b. Thus, the production of the channels 13a, 13b between the corrugations or inclined walls 13 'of the core 13 avoids the use of closure walls along the longitudinal edges 30a, 30b of the cold wall 30. The realization of the cold plate 30 is thus simplified and also allows a saving of mass, particularly advantageous when the cold plate is intended for use in an aircraft. Likewise, thanks to the formation of a set of circulation channels 13a, 13b in the core 13 of the cold plate, the addition of nozzles for transporting the cooling fluid inside the cold plate is avoided. Such a cold plate therefore has a limited mass, perfectly compatible for the intended uses, and in particular in the aeronautical field. Alternatively, and as illustrated in FIG. 5, the cold plate 30 may be designed to implement several corridors for circulation of a cooling fluid, and for example two cooling fluid circulation corridors (the limits of which are indicated by FIG. strong lines in Figure 5) each formed by a separate subset of the set of circulation channels 13a, 13b. In such a case, the cooling fluid used may be identical in the two subsets of the set of circulation channels 13a, 13b or conversely, the cold plate may use different cooling fluids, also chosen from liquids, such as water, or gases, such as air. For the implementation of the embodiment illustrated in FIG. 5, each sealing connection element 31, 32 comprises several input connectors 35, 36 or 37, 38. This arrangement thus makes it possible to generate a fluid circuit The second embodiment furthermore makes it possible to use different cooling fluids and, for example, to associate a liquid cooling fluid such as water with a cooling fluid. gaseous cooling such as air. It will be noted with reference to FIGS. 4 and 5 that a simple change of the sealing connection elements 31, 32 makes it possible, starting from the same sandwich structure 10, to produce a cold plate 30 with different types of corridor for the circulation of a fluid. The input connectors 33, 35, 36 and the output connectors 34, 37, 38 described above may be of any type, and for example each consist of fast connectors to enable easy connection and easy assembly / disassembly of the cold plate 30 within a cooling fluid circulation circuit. These fast connectors are standard components and do not need to be described more precisely here. In particular, they allow a quick and tight connection to pipes 40, shown diagrammatically in FIGS. 4 and 5. The cooling system of heat generating components, obtained by placing heat generating components 20 in contact with one and / or either of the two plates 11, 12 of the cold plate 30, allows efficient cooling of the heat generating components 20, in particular through the circulation of a cooling fluid in the core 13 directly in contact with the plates 11, 12 of the cold plate 30.
[0020] In addition, the sandwich structure 10 makes it possible to give the cold plate 30 good mechanical rigidity. The cold plate 30 can thus be used directly as a structural part of avionic equipment in an aircraft.
[0021] An exemplary use of a cold plate 30 in FIG. 7 is thus illustrated by way of nonlimiting example. More generally, the cold plate 30 can be used as a structural part of a LRU / LRM equipment (acronyms for the English terms -Saxons "Line Repleacable-Unit" and "Line Repleacable Module"), an electronic structure of the cabinet type or electrical or electronic cabinet type Here, as illustrated in Figure 7, a cabinet 51 intended for mounting a (or more) equipment LRU / LRM 52 comprises two cold plates 30 for producing a structural part 53, 54 of the cabinet 51, and in the embodiment illustrated in Figure 7, a left side wall 53 and a right side wall 54 The cabinet LRU / LRM 52, intended to be mounted on rails 52 'in the cabinet 51, is thus mounted in direct contact with the cold plates 30 forming the side walls 53, 54 of the cabinet 51. It will be noted that the plates f stiff 30, especially because of their mechanical strength improved by the presence of the core 13 in the sandwich structure 10, are adapted to be equipped with rails 52 'for mounting and support LRU equipment / LRM 52. In this type for application, the cold plates 30 are connected to the circulation circuit of the cooling fluid, and in particular sealingly connected to aircraft pipes ("A / C pipes" in English terminology), generically referenced by the tubings 40 in Figure 7. Of course, many modifications can be made to the previously described embodiments.
[0022] Thus, the zigzag structure of the core 13 in the plane of the sandwich structure 10 is only one embodiment to form a set of circulation channels in the sandwich structure.
[0023] In particular, the channels could extend parallel to the longitudinal direction Y of the sandwich structure 10 and the cold plate 30.
权利要求:
Claims (11)
[0001]
REVENDICATIONS1. Cold plate for cooling heat generating components (20), comprising two plates (11, 12) extending parallel to each other, characterized in that a core (13) is disposed between said two plates (11, 12) for forming a sandwich structure (10), said core (13) comprising a plurality of circulation channels (13a, 13b) of at least one cooling fluid from a first edge (10a) to a second opposite edge (10b) of said sandwich structure (10), and characterized in that first and second sealing members (31, 32) are respectively disposed at said first and second opposite edges (10a, 10b) of the sandwich structure ( 10), the first sealing member (31) having at least one inlet connector (33; 35,36) of the at least one coolant and the second sealing member (32) having at least one outlet (34; 37, 38) of said at least one coolant.
[0002]
2. Cold plate according to claim 1, characterized in that said set of circulation channels (13a, 13b) comprises channels (13a, 13b) closed by at least one of said two plates (11, 12) and opening respectively to said first edge (10a) and said second opposite edge (10b) of said sandwich structure.
[0003]
3. Cold plate according to claim 2, characterized in that said channels (13a, 13b) each comprise two walls (13 ') respectively adjacent to at least one of said two plates (11, 12).
[0004]
Cold plate according to claim 3, characterized in that said two walls (13 ') are inclined with respect to each other and adjacent to each other to form a channel bottom (13c). .
[0005]
5. Cold plate according to one of claims 2 to 4, characterized in that the core (13) has a corrugated shape, the top (13c) of the corrugations being in contact with at least one of said two plates ( 11, 12).
[0006]
6. Cold plate according to one of claims 1 to 5, characterized in that the set of circulation channels (13a, 13b) comprises channels (13a, 13b) parallel to each other.
[0007]
Cold plate according to claim 6, characterized in that the circulation channels (13a, 13b) are zigzagged from said first edge (10a) to said second opposite edge (10b) of the sandwich structure (10).
[0008]
8. Cold plate according to one of claims 1 to 7, characterized in that said at least one inlet connector (33; 35; 36) of at least one cooling fluid is in communication with a subset said plurality of circulation channels (13a, 13b), and said at least one outlet connector (34; 37,38) of said at least one coolant is in communication with said subset of said plurality of circulation channels (13a). , 13b).
[0009]
9. Cold plate according to claim 8, characterized in that said first sealing member (31), respectively said second sealing member (32), comprises a plurality of input connectors (35, 36), respectively several connectors outlet (37, 38) of said at least one coolant.
[0010]
Cooling system of heat generating components, characterized in that it comprises a cold plate (30) according to one of claims 1 to 9, heat generating components (20) being arranged in contact with at least one one of said two plates (11, 12).
[0011]
11. Use of a cold plate according to one of claims 1 to 9 as a structural part (53, 54) of avionic equipment (51) in an aircraft.
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同族专利:
公开号 | 公开日
CN105722374A|2016-06-29|
US9736963B2|2017-08-15|
EP3038151B1|2017-06-21|
US20160192534A1|2016-06-30|
FR3030708B1|2018-02-16|
CN105722374B|2020-01-10|
EP3038151A1|2016-06-29|
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法律状态:
2015-12-21| PLFP| Fee payment|Year of fee payment: 2 |
2016-06-24| PLSC| Search report ready|Effective date: 20160624 |
2016-12-22| PLFP| Fee payment|Year of fee payment: 3 |
2018-09-28| ST| Notification of lapse|Effective date: 20180831 |
优先权:
申请号 | 申请日 | 专利标题
FR1463072A|FR3030708B1|2014-12-22|2014-12-22|COLD PLATE, IN PARTICULAR A STRUCTURAL PART OF A HEAT-GENERATING COMPONENT EQUIPMENT|FR1463072A| FR3030708B1|2014-12-22|2014-12-22|COLD PLATE, IN PARTICULAR A STRUCTURAL PART OF A HEAT-GENERATING COMPONENT EQUIPMENT|
EP15201758.8A| EP3038151B1|2014-12-22|2015-12-21|Cold plate, in particular forming the structural portion of a device with heat-generating components|
US14/976,712| US9736963B2|2014-12-22|2015-12-21|Cold plate, forming in particular a structural part of an item of equipment having heat-generating components|
CN201511036233.8A| CN105722374B|2014-12-22|2015-12-22|Cold plate, in particular for forming a structural part of a device with heat generating components|
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