CN109121368A - A kind of thin-walled liquid cold plate - Google Patents

A kind of thin-walled liquid cold plate Download PDF

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Publication number
CN109121368A
CN109121368A CN201811120320.5A CN201811120320A CN109121368A CN 109121368 A CN109121368 A CN 109121368A CN 201811120320 A CN201811120320 A CN 201811120320A CN 109121368 A CN109121368 A CN 109121368A
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China
Prior art keywords
fin
cold plate
thin
channel
liquid cold
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CN201811120320.5A
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Chinese (zh)
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CN109121368B (en
Inventor
贾希萍
李新运
王家喜
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Guizhou Yonghong Heat Cooling Technology Co Ltd
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Guizhou Yonghong Heat Cooling Technology Co Ltd
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20218Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • H05K7/20254Cold plates transferring heat from heat source to coolant

Abstract

The invention discloses a kind of thin-walled liquid cold plates, including lower substrate (4), transition cavity (5) and single channel (6), on the lower substrate (4) and face inlet and outlet ozzle (7) position is provided with reversible deformation boss (1);It is provided with intermediate fin (2) in the transition cavity (5) and reinforces cylinder (12);It is provided in the single channel (6) and moves towards consistent reinforcement fin (3) with single channel (6).The present invention successfully meets performance indexes requirement.In the case where upper and lower substrates minimum wall thickness (MINI W.) 1mm, resistance to pressure pressure reaches 1.5MPa, No leakage and deformation, while being examined by oscillation intensity, and helium mass spectrum leak detection meets design requirement.The present invention provides effective solution scheme under conditions of guaranteeing product strength, for Aerospace Products loss of weight.

Description

A kind of thin-walled liquid cold plate
Technical field
The present invention relates to a kind of liquid cold plate cooling for aero-space electronic equipment, especially raising thin-walled liquid cooling is cold The structure of plate intensity.
Background technique
As electronic system integration degree improves, electronic equipment gradually to large capacity, big density, highly integrated development, Due to the increase of single module power density, far from meeting the requirements, liquid cold plate technology has become wind-cooling heat dissipating technology The first choice of lower generation high-new Electronic cooling.Especially in aerospace field, in addition to requiring liquid cold plate to meet electronic equipment Performance requirements and system resistance also proposed higher requirement to the weight of product outside requiring.Host unit is often satisfaction The requirement of system overall weight reduces cold plate thickness in the case where electronic equipment contact surface is constant.Therefore meet liquid cooling at the same time Under the conditions of cold plate hot property, resistance, the design of thin-walled liquid cold plate intensity is particularly important.
In addition, being influenced by space industry material intermiscibility requirement, soldering formula cold plate can only be with intensity relatively in selection It is low, 3 line aluminium alloy materials of heat treatment reinforcement can not be carried out, and most cold plate upper installing holes are more, it is in irregular shape, so that interior Portion's structure design difficulty is larger.
Being applied at present in the liquid cold plate minimum thickness of aerospace field is 5mm, and maximum outer dimension has reached 800mm (length) × 500mm (width), planarity requirements 0.1mm/100mm × 100mm, upper and lower substrates thickness are usually 1~1.5mm (current Minimum wall thickness (MINI W.) is 1mm), leak detection is mainly carried out with helium mass spectrum by pressure test and is verified, it is desirable that every block of cold plate is being delivered The preceding pressure test for carrying out 1.5MPa, pressure maintaining 5min do not allow leakage and visual visible deformation occur.
To guarantee product reliability, the verification experimental verification of function exemplar has been carried out first.Cold plate uses 3003 materials, and inside is logical Road is fin structure, fin thickness δ 0.15mm, upper and lower substrates thickness 1mm.Tests exemplar when being forced into 1.0MPa, liquid into Flexible deformation occurs for the lower substrate that proper pair of mouth.Due to being liquid-inlet at this, with lower substrate without strength support, cavity is big, wall Thickness causes lower substrate to deform.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of thin-walled liquid cold plate, can be improved in addition to fin area Cavity area intensity, it is specified that No leakage and deformation under resistance to pressure pressure, while can be examined by oscillation intensity.
Technical solution of the present invention is accomplished by
A kind of thin-walled liquid cold plate, including lower substrate, transition cavity and single channel, on the lower substrate and face is imported and exported Ozzle position is provided with reversible deformation boss;It is provided with intermediate fin in the transition cavity and reinforces cylinder;In the single channel It is provided with and moves towards consistent reinforcement fin with single channel.
Preferably, the reversible deformation boss diameter D is inlet and outlet ozzle latus rectum, reversible deformation boss height 1mm, rounding R ruler It is very little identical as diameter D.
Preferably, the length direction of the intermediate fin is along the trend of transition cavity, and intermediate fin is perpendicular to transition The bottom surface of cavity.
Preferably, the intermediate fin has multi-disc, and length and thickness are not completely equivalent, and thickness range is in 1~2mm.
Preferably, the fin of reinforcing is located at the middle position of single channel width direction, and it is with a thickness of 1mm.
Preferably, the reinforcement cylinder is located in transition cavity and is not easy to be arranged at fin, and reinforces cylinder perpendicular to transition The bottom surface of cavity connects upper and lower substrates, and diameter range is in 1~3mm.Being not easy to be arranged at fin here refers to because of fin shape Shape is not easy the position placed, such as the edge and angular position of transition cavity for fin caused by strip, therefore uses Cylinder is used as reinforcement structure.
Compared with prior art, by reasonably selecting reinforcement structure and selection to reinforce position, the present invention is successfully met Performance indexes requirement.In the case where upper and lower substrates minimum wall thickness (MINI W.) 1mm, resistance to pressure pressure reaches 1.5MPa, No leakage and change Shape, while being examined by oscillation intensity, helium mass spectrum leak detection meets design requirement.The present invention under conditions of guaranteeing product strength, Effective solution scheme is provided for Aerospace Products loss of weight.
Detailed description of the invention
Fig. 1 is the reversible deformation boss structure schematic diagram of lower substrate inlet/outlet pipe mouth position;
Fig. 2 is cold plate transition cavity structural schematic diagram;
Fig. 3 is reinforcement fin schematic diagram in cold plate single channel.
Fig. 4 is cold plate inlet and outlet reversible deformation boss, reinforces cylinder and reinforces fin schematic diagram.
Specific embodiment
The invention will be further described with specific embodiment with reference to the accompanying drawing:
As shown in figures 1-4, be thin-walled liquid cold plate structure of the invention, including import and export position reversible deformation boss 1, Intermediate fin 2 reinforces fin 3, upper substrate 8, lower substrate 4, transition cavity 5, single channel 6, inlet and outlet ozzle 7, weight loss groove 9, wing Piece 10 reinforces cylinder 12 and installation threaded hole 13.
As shown in Figure 1, being passed in and out in 4 face of lower substrate when design to solve failure mode present in thin-walled liquid cold plate Mouth 7 position of ozzle increases reversible deformation boss 1, and reversible deformation boss 1 is the hollow cylinder that there is a ball missing shape in one end, reversible deformation boss 1 diameter D is to import and export 7 latus rectum of ozzle, 1 height 1mm of reversible deformation boss, and rounding R size (i.e. segment radius) is identical as diameter D.
As shown in Figure 2 and Figure 4, it is unevenly distributed due to power module on cold plate surface, and is mostly for loss of weight product shape Irregular shape, channel are difficult to complete arrangement fin when designing, and for transition cavity 5, using intermediate fin 2 and reinforce cylinder 12 On the one hand structure, one side water conservancy diversion improve intensity.Intermediate 2 1~2mm of thickness of fin reinforces 1~3mm of body diameter, can be according to chamber Road shape layout.
As shown in figure 3, considering the requirement of cold plate uniform temperature, Chang Huiyong single channel 6 changes flow direction and position in design, with Temperature equalization is carried out to cold plate working face, at this time single channel width design is particularly critical, the narrow influence resistance in channel, wide shadow Ring intensity.It is required to meet the two, 3 structure of fin is reinforced using addition in single channel 6, reinforces fin 3 and 6 track one of single channel It causes, fin is with a thickness of 1mm.

Claims (6)

1. a kind of thin-walled liquid cold plate, including lower substrate (4), transition cavity (5) and single channel (6), it is characterised in that: under described On substrate (4) and face inlet and outlet ozzle (7) position is provided with reversible deformation boss (1);In being provided in the transition cavity (5) Between fin (2) and reinforce cylinder (12);It is provided in the single channel (6) and moves towards consistent reinforcement fin with single channel (6) (3)。
2. a kind of thin-walled liquid cold plate according to claim 1, it is characterised in that: reversible deformation boss (1) the diameter D is Inlet and outlet ozzle (7) latus rectum, reversible deformation boss (1) height 1mm, rounding R size are identical as diameter D.
3. a kind of thin-walled liquid cold plate according to claim 1, it is characterised in that: the length side of the intermediate fin (2) To the trend along transition cavity (5), and intermediate fin (2) is perpendicular to the bottom surface of transition cavity (5).
4. a kind of thin-walled liquid cold plate according to claim 3, it is characterised in that: the intermediate fin (2) has multi-disc, long Degree and thickness are not completely equivalent, and thickness range is in 1~2mm.
5. a kind of thin-walled liquid cold plate according to claim 1, it is characterised in that: the reinforcement fin (3) is located at single-pass The middle position of road (6) width direction, and it is with a thickness of 1mm.
6. a kind of thin-walled liquid cold plate according to claim 1, it is characterised in that: the reinforcement cylinder (12) is located at transition It is not easy to be arranged at fin in cavity (5), and reinforces cylinder (12) perpendicular to the bottom surface of transition cavity (5).
CN201811120320.5A 2018-09-21 2018-09-21 Thin-wall liquid cooling plate Active CN109121368B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811120320.5A CN109121368B (en) 2018-09-21 2018-09-21 Thin-wall liquid cooling plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811120320.5A CN109121368B (en) 2018-09-21 2018-09-21 Thin-wall liquid cooling plate

Publications (2)

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CN109121368A true CN109121368A (en) 2019-01-01
CN109121368B CN109121368B (en) 2020-04-17

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CN201811120320.5A Active CN109121368B (en) 2018-09-21 2018-09-21 Thin-wall liquid cooling plate

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CN (1) CN109121368B (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204357523U (en) * 2014-12-24 2015-05-27 天津惠德汽车进气系统有限公司 A kind of plasticizing part eliminated circular hole edge stress and concentrate
CN204834606U (en) * 2015-06-17 2015-12-02 特变电工新疆新能源股份有限公司 Flexible direct current transmission change of current valve power unit's liquid cooling ware
CN105493276A (en) * 2013-08-30 2016-04-13 株式会社电装 Cooler
CN105682431A (en) * 2016-04-06 2016-06-15 新乡市特美特换热设备有限公司 Liquid-cooling cold plate
CN106102419A (en) * 2016-07-29 2016-11-09 中航光电科技股份有限公司 A kind of liquid cold plate and manufacture method thereof
WO2017209665A1 (en) * 2016-05-30 2017-12-07 Saab Ab Cooling device with evenly distributed and directed cooling effect for high heat flux and deaeration functionality
CN207040120U (en) * 2017-07-21 2018-02-23 林进东 A kind of swollen quick-fried heat abstractor of energy-saving prevention
CN207219257U (en) * 2017-07-13 2018-04-10 王楠楠 A kind of ultra-thin cooled plate
CN207340415U (en) * 2017-10-12 2018-05-08 苏州泰硕电子有限公司 Interior burr forms the temperature-uniforming plate of runner
CN207751372U (en) * 2017-12-26 2018-08-21 豫新汽车空调股份有限公司 A kind of liquid cooling plate with inner fin enhanced heat exchange

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105493276A (en) * 2013-08-30 2016-04-13 株式会社电装 Cooler
CN204357523U (en) * 2014-12-24 2015-05-27 天津惠德汽车进气系统有限公司 A kind of plasticizing part eliminated circular hole edge stress and concentrate
CN204834606U (en) * 2015-06-17 2015-12-02 特变电工新疆新能源股份有限公司 Flexible direct current transmission change of current valve power unit's liquid cooling ware
CN105682431A (en) * 2016-04-06 2016-06-15 新乡市特美特换热设备有限公司 Liquid-cooling cold plate
WO2017209665A1 (en) * 2016-05-30 2017-12-07 Saab Ab Cooling device with evenly distributed and directed cooling effect for high heat flux and deaeration functionality
CN106102419A (en) * 2016-07-29 2016-11-09 中航光电科技股份有限公司 A kind of liquid cold plate and manufacture method thereof
CN207219257U (en) * 2017-07-13 2018-04-10 王楠楠 A kind of ultra-thin cooled plate
CN207040120U (en) * 2017-07-21 2018-02-23 林进东 A kind of swollen quick-fried heat abstractor of energy-saving prevention
CN207340415U (en) * 2017-10-12 2018-05-08 苏州泰硕电子有限公司 Interior burr forms the temperature-uniforming plate of runner
CN207751372U (en) * 2017-12-26 2018-08-21 豫新汽车空调股份有限公司 A kind of liquid cooling plate with inner fin enhanced heat exchange

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