US20110232882A1 - Compact cold plate configuration utilizing ramped closure bars - Google Patents
Compact cold plate configuration utilizing ramped closure bars Download PDFInfo
- Publication number
- US20110232882A1 US20110232882A1 US12/748,572 US74857210A US2011232882A1 US 20110232882 A1 US20110232882 A1 US 20110232882A1 US 74857210 A US74857210 A US 74857210A US 2011232882 A1 US2011232882 A1 US 2011232882A1
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- United States
- Prior art keywords
- fluid
- fluid path
- cold plate
- closure bar
- layer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0246—Arrangements for connecting header boxes with flow lines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- the present disclosure relates to a heat transfer device, and more particularly to a cold plate assembly.
- Heat removal provides, for example, lower operating temperatures, higher operating speeds, greater computing power and higher reliability.
- Cold plates are liquid cooled structures which provide a heat transfer function for components mounted thereto.
- a header which communicates the liquid into the cold plate is typically a separate component attached to the main cold plate.
- the header may increase the overall geometric envelope.
- a method of communicating fluid through a cold plate includes communicating fluid through an internal header.
- FIG. 1 is a general exploded view of a cold plate assembly and structural panel
- FIG. 2 is a perspective view of the cold plate assembly
- FIG. 3 is a sectional view along line 3 - 3 in FIG. 2 through an inlet port arrangement with an internal header for the cold plate assembly;
- FIG. 4 is an expanded view of an outlet port arrangement with an internal header for the cold plate assembly
- FIG. 5 is a perspective view of the cold plate assembly and structural panel of FIG. 1 ;
- FIG. 6 is a sectional view along line 6 - 6 in FIG. 2 ;
- FIG. 7 is a partial assembled view of the cold plate assembly at an upper fluid path layer
- FIG. 8 is a partial assembled view of the cold plate assembly at middle parting sheet between an upper fluid path layer and a lower fluid path layer;
- FIG. 9 is a partial assembled view of the cold plate assembly at a lower fluid path layer
- FIG. 10 is a partial assembled view of the cold plate assembly at a upper parting sheet level above an upper fluid path layer
- FIG. 11 is a sectional view of another non-limiting embodiment of the internal header along line 6 - 6 in FIG. 2 .
- FIG. 1 schematically illustrates a cold plate assembly 20 .
- the cold plate assembly 20 is typically mounted to a support panel 22 .
- the support panel 22 may be fabricated from an upper face sheet 24 A and a lower face sheet 24 B which sandwich a frame 28 and a core 30 such as a honeycomb core therebetween.
- the support panel 22 is typically assembled with an adhesive to bond the upper face sheet 24 A and the lower face sheet 24 B to the frame 28 and the core 30 .
- the cold plate assembly 20 may be mounted to various components other than the support panel 22 through fasteners, adhesives or various combinations thereof.
- the cold plate assembly 20 generally includes an upper end sheet 40 , an upper parting sheet 42 , a fluid path B closure bar 44 , a fluid path B fin structure 46 (illustrated schematically), a middle parting sheet 48 , a fluid path A closure bar 50 , a fluid path A fin structure 52 (illustrated schematically), a lower parting sheet 54 and a lower end sheet 56 .
- the upper end sheet 40 may be manufactured of 3004 Aluminum with a nominal thickness of 0.04 inches (1 mm)
- the upper parting sheet 42 may be manufactured of a braze material, such as CT-23, or a Multiclad alloy with a nominal thickness of 0.016 inches (0.4 mm)
- the fluid path B closure bar 44 may be manufactured of 6951 Aluminum with a nominal thickness of 0.05 inches (1.3 mm)
- the fluid path B fin structure 46 may be manufactured of 6951 Aluminum with a nominal thickness of 0.005 inches (0.13 mm)
- the middle parting sheet 48 may be manufactured of a braze material, such as CT-23, or a Multiclad alloy with a nominal thickness of 0.016 inches (0.4 mm)
- the fluid path A closure bar 50 may be manufactured of 6951 Aluminum with a nominal thickness of 0.05 inches (1.3 mm)
- the fluid path A fin structure 52 may be manufactured of 6951 Aluminum with a nominal thickness of 0.005 inches (0.13 mm)
- the lower parting sheet 54 may
- the parting sheets 42 , 48 and 54 include a braze alloy that melts during a brazing process that creates an integral assembly between the sheets 40 - 56 . It should be understood that other bonding or assembly methods may alternatively or additionally be utilized.
- the assembly is brazed together such that: the upper end sheet 40 is brazed to the upper parting sheet 42 ; the upper parting sheet 42 is brazed to the upper end sheet 40 , the path B closure bar 44 and the fluid path B fin structure 46 ; the fluid path B closure bar 44 is brazed to the upper parting sheet 42 and the middle parting sheet 48 ; the fluid path B fin structure 46 is brazed to the upper parting sheet 42 and the middle parting sheet 48 ; the middle parting sheet 48 is brazed to the fluid path B fin structure 46 , the fluid path B closure bar 44 , the fluid path A fin structure 52 and the fluid path A closure bar 50 ; the fluid path A closure bar 50 is brazed to the middle parting sheet 48 and to the lower parting sheet 54 ; the fluid path A fin structure 52 is brazed to the middle parting sheet 48 and to the lower parting sheet 54 ; and the lower parting sheet 54 is brazed to the fluid path A fin structure 52 , the fluid path A closure bar 50 and the lower end sheet 56
- the first inlet port 34 A- 1 and the second inlet port 34 A- 2 are in fluid communication with a respective first and second fluid layer first through a single layer ( FIG. 3 ).
- Fluid is communicated from the respective fluid layers through an outlet header assembly 34 B having a first outlet port 34 B- 1 and second outlet port 34 B- 2 ( FIG. 4 ) to circulate the fluid through a fluid system 38 as generally understood (illustrated schematically; FIG. 5 ).
- a single outlet port in the outlet header assembly 34 B will be described in detail herein, at least one port in the inlet header assembly 32 A may also be constructed generally in accords therewith but need not be described in specific detail herein.
- the second inlet port 34 A- 2 ( FIG. 3 ) communicates with an upper fluid layer path B—through communication of the fluid first through the lower fluid layer—path A—prior to communication out through outlet port 34 B- 2 . That is, communication through the fluid outlet port 34 B- 2 from the upper fluid path B layer is actually first communicated to the lower fluid path A layer in the fluid path A closure bar 50 but not into the fluid path A fin structure 52 which defines the separate fluid layer. It should be understood that the lower fluid path A layer does not require a similar flow path as the upper fluid path B layer already provides the necessary clearance for internal header flow.
- fluid is communicated through a channel 44 C ( FIG. 7 ) and through an inlet aperture 481 in the middle parting sheet 48 ( FIG. 8 ). Fluid is communicated down a ramp 50 R formed in the fluid path A closure bar 50 ( FIG. 9 ) to flow adjacent the lower parting sheet 54 at the lower fluid path A fin structure 52 but separated therefrom by the fluid path A closure bar 50 . That is, the fluid path A closure bar 50 receives fluid flow from the upper fluid path B layer but does not communicated the fluid into the lower fluid path A fin structure 52 .
- the fluid from the ramp 50 R is then communicated upward through a middle parting sheet outlet aperture 48 o ( FIG. 8 ) in the middle parting sheet 48 then through an aligned outlet 44 o in the fluid path B closure bar 44 ( FIG. 7 ).
- the fluid from the aligned outlet 44 o is communicated through an aligned aperture 42 o through the upper parting sheet 42 ( FIG. 10 ) then out through the outlet port 34 B- 2 which is attached thereto adjacent to the upper end sheet 40 .
- the ramp 50 R is replaced with a step 50 S. ( FIG. 11 ). It should be understood that various other geometric arrangements may alternatively or additionally be provided.
- the internal header eliminates the heretofor requirement of an external header through usage of the fluid path A closure bar and the fluid path B closure bar area to communicate fluid from an adjacent level. That is, the fluid is communicated from an upper fluid layer to the lower fluid layer prior to communication out through the outlet port 34 B.
- This arrangement permits the fluid inlet port to be communicated into the same layer that the fluid exits because the ramp has passed the fluid back to the adjacent lower layer.
- the overall geometric envelope of the cold plate assembly 20 is thereby reduced. Total part count and weight reduction is provided through the elimination of external header components as there is no separate external header assembly for the fluid inlet and outlet. Furthermore, a more structurally sound cold plate assembly results as the external header area is eliminated as a potential area for failure.
Abstract
A method of communicating fluid through a cold plate includes communicating fluid through an internal header.
Description
- This invention was made with government support with the National Aeronautics and Space Administration under Contract No.: NNJ06TA25C. The government therefore has certain rights in this invention.
- The present disclosure relates to a heat transfer device, and more particularly to a cold plate assembly.
- Operation of high speed electronic components such as microprocessors, graphics processors and other modules produces heat. The heat may need to be removed for efficient operation. Heat removal provides, for example, lower operating temperatures, higher operating speeds, greater computing power and higher reliability.
- Cold plates are liquid cooled structures which provide a heat transfer function for components mounted thereto. A header which communicates the liquid into the cold plate is typically a separate component attached to the main cold plate. The header may increase the overall geometric envelope.
- A method of communicating fluid through a cold plate according to an exemplary aspect of the present disclosure includes communicating fluid through an internal header.
- Various features will become apparent to those skilled in the art from the following detailed description of the disclosed non-limiting embodiment. The drawings that accompany the detailed description can be briefly described as follows:
-
FIG. 1 is a general exploded view of a cold plate assembly and structural panel; -
FIG. 2 is a perspective view of the cold plate assembly; -
FIG. 3 is a sectional view along line 3-3 inFIG. 2 through an inlet port arrangement with an internal header for the cold plate assembly; -
FIG. 4 is an expanded view of an outlet port arrangement with an internal header for the cold plate assembly; -
FIG. 5 is a perspective view of the cold plate assembly and structural panel ofFIG. 1 ; -
FIG. 6 is a sectional view along line 6-6 inFIG. 2 ; -
FIG. 7 is a partial assembled view of the cold plate assembly at an upper fluid path layer; -
FIG. 8 is a partial assembled view of the cold plate assembly at middle parting sheet between an upper fluid path layer and a lower fluid path layer; -
FIG. 9 is a partial assembled view of the cold plate assembly at a lower fluid path layer; -
FIG. 10 is a partial assembled view of the cold plate assembly at a upper parting sheet level above an upper fluid path layer; and -
FIG. 11 is a sectional view of another non-limiting embodiment of the internal header along line 6-6 inFIG. 2 . -
FIG. 1 schematically illustrates acold plate assembly 20. Thecold plate assembly 20 is typically mounted to asupport panel 22. Thesupport panel 22 may be fabricated from anupper face sheet 24A and alower face sheet 24B which sandwich aframe 28 and acore 30 such as a honeycomb core therebetween. Thesupport panel 22 is typically assembled with an adhesive to bond theupper face sheet 24A and thelower face sheet 24B to theframe 28 and thecore 30. It should be understood that thecold plate assembly 20 may be mounted to various components other than thesupport panel 22 through fasteners, adhesives or various combinations thereof. - The
cold plate assembly 20 generally includes anupper end sheet 40, anupper parting sheet 42, a fluid pathB closure bar 44, a fluid path B fin structure 46 (illustrated schematically), amiddle parting sheet 48, a fluid pathA closure bar 50, a fluid path A fin structure 52 (illustrated schematically), alower parting sheet 54 and alower end sheet 56. In one non-limiting embodiment, theupper end sheet 40 may be manufactured of 3004 Aluminum with a nominal thickness of 0.04 inches (1 mm), theupper parting sheet 42 may be manufactured of a braze material, such as CT-23, or a Multiclad alloy with a nominal thickness of 0.016 inches (0.4 mm), the fluid pathB closure bar 44 may be manufactured of 6951 Aluminum with a nominal thickness of 0.05 inches (1.3 mm), the fluid path Bfin structure 46 may be manufactured of 6951 Aluminum with a nominal thickness of 0.005 inches (0.13 mm), themiddle parting sheet 48 may be manufactured of a braze material, such as CT-23, or a Multiclad alloy with a nominal thickness of 0.016 inches (0.4 mm), the fluid path Aclosure bar 50 may be manufactured of 6951 Aluminum with a nominal thickness of 0.05 inches (1.3 mm), the fluid path Afin structure 52 may be manufactured of 6951 Aluminum with a nominal thickness of 0.005 inches (0.13 mm), thelower parting sheet 54 may be manufactured of a braze material, such as CT-23, or a Multiclad alloy with a nominal thickness of 0.016 inches (0.4 mm) and thelower end sheet 56 may be manufactured of 3004 Aluminum with a nominal thickness of 0.04 inches (1 mm). It should be understood that various materials and nominal thickness may alternatively be utilized. - The
parting sheets - Generally, the assembly is brazed together such that: the
upper end sheet 40 is brazed to theupper parting sheet 42; theupper parting sheet 42 is brazed to theupper end sheet 40, the pathB closure bar 44 and the fluid pathB fin structure 46; the fluid pathB closure bar 44 is brazed to theupper parting sheet 42 and themiddle parting sheet 48; the fluid pathB fin structure 46 is brazed to theupper parting sheet 42 and themiddle parting sheet 48; themiddle parting sheet 48 is brazed to the fluid path Bfin structure 46, the fluid pathB closure bar 44, the fluid path Afin structure 52 and the fluid pathA closure bar 50; the fluid pathA closure bar 50 is brazed to themiddle parting sheet 48 and to thelower parting sheet 54; the fluid path Afin structure 52 is brazed to themiddle parting sheet 48 and to thelower parting sheet 54; and thelower parting sheet 54 is brazed to the fluid path Afin structure 52, the fluid pathA closure bar 50 and thelower end sheet 56. - Referring to
FIG. 2 , aninlet header assembly 32A with afirst inlet port 34A-1 and asecond inlet port 34A-2 communicates fluid into thecold plate assembly 20. Thefirst inlet port 34A-1 and thesecond inlet port 34A-2 are in fluid communication with a respective first and second fluid layer first through a single layer (FIG. 3 ). Fluid is communicated from the respective fluid layers through anoutlet header assembly 34B having afirst outlet port 34B-1 andsecond outlet port 34B-2 (FIG. 4 ) to circulate the fluid through a fluid system 38 as generally understood (illustrated schematically;FIG. 5 ). It should be understood that although a single outlet port in theoutlet header assembly 34B will be described in detail herein, at least one port in theinlet header assembly 32A may also be constructed generally in accords therewith but need not be described in specific detail herein. - Referring to
FIG. 6 , thesecond inlet port 34A-2 (FIG. 3 ) communicates with an upper fluid layer path B—through communication of the fluid first through the lower fluid layer—path A—prior to communication out throughoutlet port 34B-2. That is, communication through thefluid outlet port 34B-2 from the upper fluid path B layer is actually first communicated to the lower fluid path A layer in the fluid pathA closure bar 50 but not into the fluid path Afin structure 52 which defines the separate fluid layer. It should be understood that the lower fluid path A layer does not require a similar flow path as the upper fluid path B layer already provides the necessary clearance for internal header flow. - From the upper fluid path B
fin structure 46 layer, fluid is communicated through achannel 44C (FIG. 7 ) and through aninlet aperture 481 in the middle parting sheet 48 (FIG. 8 ). Fluid is communicated down aramp 50R formed in the fluid path A closure bar 50 (FIG. 9 ) to flow adjacent thelower parting sheet 54 at the lower fluid path Afin structure 52 but separated therefrom by the fluid pathA closure bar 50. That is, the fluid path Aclosure bar 50 receives fluid flow from the upper fluid path B layer but does not communicated the fluid into the lower fluid path Afin structure 52. - The fluid from the
ramp 50R is then communicated upward through a middle parting sheet outlet aperture 48 o (FIG. 8 ) in themiddle parting sheet 48 then through an aligned outlet 44 o in the fluid path B closure bar 44 (FIG. 7 ). The fluid from the aligned outlet 44 o is communicated through an aligned aperture 42 o through the upper parting sheet 42 (FIG. 10 ) then out through theoutlet port 34B-2 which is attached thereto adjacent to theupper end sheet 40. - In another non-limiting embodiment, the
ramp 50R is replaced with astep 50S. (FIG. 11 ). It should be understood that various other geometric arrangements may alternatively or additionally be provided. - The internal header eliminates the heretofor requirement of an external header through usage of the fluid path A closure bar and the fluid path B closure bar area to communicate fluid from an adjacent level. That is, the fluid is communicated from an upper fluid layer to the lower fluid layer prior to communication out through the
outlet port 34B. This arrangement permits the fluid inlet port to be communicated into the same layer that the fluid exits because the ramp has passed the fluid back to the adjacent lower layer. The overall geometric envelope of thecold plate assembly 20 is thereby reduced. Total part count and weight reduction is provided through the elimination of external header components as there is no separate external header assembly for the fluid inlet and outlet. Furthermore, a more structurally sound cold plate assembly results as the external header area is eliminated as a potential area for failure. - It should be understood that like reference numerals identify corresponding or similar elements throughout the several drawings. It should also be understood that although a particular component arrangement is disclosed in the illustrated embodiment, other arrangements will benefit herefrom.
- Although particular step sequences are shown, described, and claimed, it should be understood that steps may be performed in any order, separated or combined unless otherwise indicated and will still benefit from the present disclosure.
- The foregoing description is exemplary rather than defined by the limitations within. Various non-limiting embodiments are disclosed herein, however, one of ordinary skill in the art would recognize that various modifications and variations in light of the above teachings will fall within the scope of the appended claims. It is therefore to be understood that within the scope of the appended claims, the disclosure may be practiced other than as specifically described. For that reason the appended claims should be studied to determine true scope and content.
Claims (11)
1. A cold plate assembly comprising:
an internal header with a fluid port, said fluid port in fluid communication with a fluid path B fin structure in a second layer which contains said fluid path B fin structure through a fluid outlet in a fluid path closure bar in a first layer which contains a fluid path A fin structure.
2. The cold plate assembly as recited in claim 1 , wherein said fluid outlet includes a ramped surface.
3. The cold plate assembly as recited in claim 1 , wherein said fluid outlet includes a stepped surface.
4. A cold plate assembly comprising:
a port;
an upper end sheet mounted to said port;
an upper parting sheet attached to said upper end sheet, said upper parting sheet includes an opening in communication with said port;
a fluid path B closure bar attached to said upper parting sheet, said fluid path B closure bar contains a fluid path B fin structure and a fluid path B channel;
a fluid path A closure bar, said fluid path A closure bar contains a fluid path A fin structure, said fluid path A closure bar defines a fluid path A closure bar outlet in communication with said fluid path B channel;
a middle parting sheet attached between said fluid path B closure bar and said fluid path A closure bar, said middle parting sheet includes a first opening in communication with said fluid path A closure bar outlet and a second opening in communication with said port.
5. The cold plate assembly as recited in claim 4 , wherein said fluid path A closure bar outlet includes a ramped surface.
6. The cold plate assembly as recited in claim 4 , wherein said fluid path A closure bar outlet includes a stepped surface.
7. The cold plate assembly as recited in claim 4 , wherein a lower parting sheet is attached to said fluid path A closure bar opposite said middle parting sheet.
8. The cold plate assembly as recited in claim 7 , further comprising a lower end sheet attached to said lower parting sheet.
9. A method of communicating fluid through a cold plate comprising:
communicating fluid through an internal header of the cold plate, the internal header communicates fluid through a fluid inlet which passes through a common layer of the cold plate with a fluid outlet.
10. A method as recited in claim 9 , further comprising ramping the fluid to a first layer which first receives the fluid from an inlet port from a second layer which receives fluid from the first layer.
11. A method as recited in claim 9 , further comprising stepping the fluid to a first layer which first receives the fluid from an inlet port from a second layer which receives fluid from the first layer.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/748,572 US20110232882A1 (en) | 2010-03-29 | 2010-03-29 | Compact cold plate configuration utilizing ramped closure bars |
JP2011054000A JP2011211192A (en) | 2010-03-29 | 2011-03-11 | Cold plate assembly and method of communicating fluid through cold plate |
EP11250396A EP2372762A1 (en) | 2010-03-29 | 2011-03-29 | Compact cold plate configuration |
CN2011100764825A CN102209454A (en) | 2010-03-29 | 2011-03-29 | Compact cold plate configuration utilizing ramped closure bars |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US12/748,572 US20110232882A1 (en) | 2010-03-29 | 2010-03-29 | Compact cold plate configuration utilizing ramped closure bars |
Publications (1)
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US20110232882A1 true US20110232882A1 (en) | 2011-09-29 |
Family
ID=44148408
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US12/748,572 Abandoned US20110232882A1 (en) | 2010-03-29 | 2010-03-29 | Compact cold plate configuration utilizing ramped closure bars |
Country Status (4)
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US (1) | US20110232882A1 (en) |
EP (1) | EP2372762A1 (en) |
JP (1) | JP2011211192A (en) |
CN (1) | CN102209454A (en) |
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Also Published As
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---|---|
CN102209454A (en) | 2011-10-05 |
JP2011211192A (en) | 2011-10-20 |
EP2372762A1 (en) | 2011-10-05 |
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