CN106981464B - A kind of temperature equalization system for large scale radiator - Google Patents

A kind of temperature equalization system for large scale radiator Download PDF

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Publication number
CN106981464B
CN106981464B CN201710206046.2A CN201710206046A CN106981464B CN 106981464 B CN106981464 B CN 106981464B CN 201710206046 A CN201710206046 A CN 201710206046A CN 106981464 B CN106981464 B CN 106981464B
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radiator
flow tube
equalization system
temperature equalization
large scale
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CN106981464A (en
CN106981464B8 (en
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孙永升
龚振兴
封桂荣
国林钊
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Shandong Chaoyue CNC Electronics Co Ltd
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Shandong Chaoyue Numerical Control Electronics Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/34Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/46Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
    • H01L23/473Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

A kind of temperature equalization system for large scale radiator provided by the invention, is arranged in the base plate bottom of radiator, including transfer tube, flow tube and low melting point liquid metal;Circulation passage is provided in flow tube, and flow tube is distributed in the base plate bottom plane of radiator;Low melting point liquid metal is arranged in the circulation passage of flow tube;Transfer tube is connect with flow tube, and low melting point liquid metal can be driven to flow in the circulation passage of flow tube.Temperature equalization system provided by the invention has the advantage that by using low melting point liquid metal that as flow working medium, this temperature equalization system is suitable for the samming demand of large-sized cold plate or cooling fin, and even temperature effect is significant and stablizes.

Description

A kind of temperature equalization system for large scale radiator
Technical field
The present invention relates to element radiating fields, and in particular to a kind of temperature equalization system for large scale radiator.
Background technique
The heat power consumption of IGBT module and large LED panel module has been up to Shang kilowatt in current industrial control product, to be effectively reduced IGBT module or LED base temperature, are radiated or are conducted heat frequently with large-scale cooling fin or cold plate, cooling fin or cold plate For size (length or width) often in 800mm or more, substrate or cold plate surface temperature distribution are extremely uneven.According to heat transfer Basic principle, in the case of identical heat-transfer path, thermal resistance is smaller, and it is lower to transmit the identical heat temperature difference.Promote substrate or cold plate table Face temperature uniformity reduces the thermal resistance in heat transfer process, can effectively reduce the temperature of heating device.
Currently, the mode of heat spreader substrate or cold plate frequently with heat pipe or VC temperature-uniforming plate as samming.Heat pipe and VC samming Plate has the limitation of following two aspects for large scale cooling fin or cold plate samming:
1) capillary heat transfer limitation, when thermic load reaches a certain level, the fluid low that capillary force effect is drawn back is steamed with meeting When amount needed for hair, cause evaporator section dry.At this point, evaporator section tube wall temperature can be gradually increasing, even burnt out when serious The phenomenon that heat pipe or VC temperature-uniforming plate.
2) size limits, no matter heat pipe or VC temperature-uniforming plate, in the internal working medium course of work, by fluid viscosity and movement The influence of inertia exists along journey and local resistance loss, and heat pipe or VC samming board size are bigger, and linear loss is higher, heat transfer effect It can be poorer.General heat pipe length is more than 300mm, and heat-transfer effect decline is obvious;The heat transfer principle of VC temperature-uniforming plate and heat pipe phase Together, there is also similar problems, while the manufacturing cost of VC temperature-uniforming plate is higher.
Therefore, it is necessary to a kind of temperature equalization systems for large scale radiator, have under large scale, high heat load environment Even temperature effect is good, and even temperature effect is stablized, while the characteristics of good economy performance.
Summary of the invention
For above-mentioned the problems of the prior art, the purpose of the present invention is to provide a kind of for large scale radiator Temperature equalization system.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of temperature equalization system for large scale radiator, is arranged in the base plate bottom of radiator, temperature equalization system Including transfer tube, flow tube and low melting point liquid metal;Circulation passage is provided in flow tube, and flow tube is in the substrate of radiator Distribution in bottom plane;Low melting point liquid metal is arranged in the circulation passage of flow tube;Transfer tube is connected or is contacted with flow tube, and Low melting point liquid metal can be driven to flow in the circulation passage of flow tube.
Further, flow tube is uniformly distributed in the base plate bottom plane of radiator.
Further, flow tube is flat tube or round tube.
Further, temperature equalization system is embedded in the base plate bottom of radiator.
Further, the size of radiator is much larger than the size of heat source.
Further, low melting point liquid metal is gallium, gallium-indium alloy, gallium-indium-tin alloy, indium bismuth copper alloy.
Further, the circulation passage in flow tube is the circulation passage in circulation closed or flow tube and the transfer tube Interior runner forms circulation closed runner.
Further, the material of flow tube is the metal material of thermal conductivity height and stable chemical performance.
Further, the material of flow tube is red copper.
Further, transfer tube is electromagnetic pump or peristaltic pump.
The present invention can obtain following advantageous effects by above technical scheme:
(1) by using low melting point liquid metal as flow working medium, this temperature equalization system be suitable for large-sized cold plate or The samming demand of cooling fin, and even temperature effect is significant and stablizes;
(2) red copper is used by flow tube, that is, facilitates welding that can improve the heat exchange between flow tube and cold plate or heat spreader substrate again Performance;
(3) good economy performance, it is easy to process.
Certainly, implementing any of the products of the present invention must be not necessarily required to reach all the above technical effect simultaneously.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the top view described in the embodiment of the present invention for the temperature equalization system of large scale radiator;
Fig. 2 is the side view described in the embodiment of the present invention for the temperature equalization system of large scale radiator.
In figure: 1. transfer tubes;2. flow tube;3. low melting point liquid metal;4. heat source;5. radiator.
Specific embodiment
As used some vocabulary to censure specific components in the specification and claims.Those skilled in the art answer It is understood that hardware manufacturer may call the same component with different nouns.This specification and claims are not with name The difference of title is as the mode for distinguishing component, but with the difference of component functionally as the criterion of differentiation.Such as logical The " comprising " of piece specification and claim mentioned in is an open language, therefore should be construed to " including but do not limit In ".Specification subsequent descriptions are to implement better embodiment of the invention, and so the description is to illustrate general original of the invention For the purpose of then, the range that is not intended to limit the invention.Protection scope of the present invention when regard appended claims institute's defender as It is quasi-.
Embodiment 1
As shown in Figs. 1-2, a kind of temperature equalization system for large scale radiator provided in this embodiment, the temperature equalization system The base plate bottom of radiator 5 is set, which includes transfer tube 1, flow tube 2 and low melting point liquid metal 3;Flow tube 2 It is inside provided with circulation passage, and flow tube 2 is distributed in the base plate bottom plane of radiator 5;Low melting point liquid metal 3 is arranged In the circulation passage of flow tube 2;Transfer tube 1 is connected or is contacted with flow tube 2, and low melting point liquid metal 3 can be driven in flow tube 2 Flowing in circulation passage.Wherein, flow tube 2 is flat tube, is also possible to round tube or other are suitble to shape, and in the base of radiator Distribution form in board bottom facial planes is to be uniformly distributed;Temperature equalization system is the base plate bottom for being embedded in radiator 5, and is dissipated The size of thermal 5 is larger relative to the size of heat source;Circulation passage in flow tube 2 is in circulation closed or flow tube 2 Runner in circulation passage and transfer tube 1 forms circulation closed runner.
Specifically, the material of flow tube 2 is the metal material of thermal conductivity height and stable chemical performance, it is therefore preferable to red copper, this In stable chemical performance stable chemical performance when referring in particular to contact with low melting point liquid metal 3;The side that flow tube 2 passes through welding Formula is embedded in the base plate bottom of radiator 5;Transfer tube 1 is electromagnetic pump or peristaltic pump and other applicable pumps or driving dress It sets, when temperature equalization system is applied on the lesser radiator 5 of size, pony pump or micropump is can be used in transfer tube 1;Low melting point Liquid metal 3 is the binary or ternaries alloys such as gallium, gallium-indium alloy, gallium-indium-tin alloy or indium bismuth copper alloy.Radiator 5 can be Cold plate or cooling fin and other devices for being used to radiate.The large scale of radiator 5 can refer to based on normal domestic use The size of the radiator of calculation machine processor is much bigger, such as area is the 10 of the area of computer processor radiator Again, 20 times or bigger, it can also be that the size relative to heat source is larger or is much larger than, such as a high temperature heat point source, have Large-sized radiator 5 of temperature equalization system carries out samming, heat dissipation to the high temperature heat point source.
Specifically, flow tube 2 has the part for being distributed as uniform continuous U-shaped, is bent connection, transfer tube 1 between U-shaped part Positioned at the continuous U-shaped of flow tube 2 side and connected with flow tube 2.
Temperature equalization system drives the flowing of low melting point liquid metal 3 in flow tube 2 to constitute the samming circulatory system by transfer tube 1, Using the efficient Convective Heat Transfer of liquid metal, by the radiator 5 of the heat transfer at local high spot to such as metallic cold plate Surface, realize the samming of large-sized radiator 5.Since low melting point liquid metal 3 is good thermally conductive and mobile performance, and And not received heat delivery threshold and the size limitation of the samming circulatory system average temperature performance of its composition, so that as large scale cooling fin is cold The even temperature effect of the radiator 5 of plate or cold plate is significant.
The thermal coefficient (20-60W/mK) of low melting point liquid metal 3 is about 40 times of water thermal coefficient (0.6W/mK), phase With under flow velocity, compared with water, high about 1 order of magnitude of convection transfer rate reaches 30000- to low melting point liquid metal 3 50000W/m2K, convective heat transfer resistance are even less than heat pipe and VC temperature-uniforming plate.Under conditions of flow control is appropriate, low melting point liquid The temperature rise very little of metal 3 is a kind of good samming working medium, can effectively avoid the performance limitation of heat pipe or VC temperature-uniforming plate.This is The flow tube 2 of warm device is more uniform in the distribution of the surface of radiator 5, and even temperature effect is better.The temperature of radiator 5 only with eutectic The flow of point liquid metal 3 is related, and flow is bigger, and the temperature of radiator 5 is lower.When the elements/devices hot merit as heat source When consuming higher, pipe-line layout can be optimized or change the number of coils and electrical current of the transfer tube 1 such as electromagnetic pump, to realize samming With the purpose of cooling.Flow of the low melting point liquid metal 3 in the circulatory system can be adjusted by transfer tube 1, avoid temperature equalization system The circulatory system there is working medium boiling phenomenon, thus effectively prevent heat transfer the limit limitation.Low melting point liquid metal 3 is right The transmitting for flowing heat in heat transfer process is only related to flow velocity and circulating channel structure form, and unrelated with the length of flow tube 2.Flow tube 2 length only influences the flowing pressure loss of system, and flow tube 2 is longer, and the pressure loss in flow process is higher.Low melting point liquid In 3 cyclic process of metal, power resources are provided by transfer tube 1, transfer tube 1 for example can be electromagnetic pump, on the one hand, can pass through increasing It is powered on magnetic pumping number of coils or improves the mode of electrical current, enhance electromagnetic pump driving capability.On the other hand, by the pressure loss with Known to the relationship of flow velocity (pressure loss is directly proportional to the quadratic power of flow velocity), pass through circulation passage sectional dimension in optimization flow tube 2 Mode, can also realize reduce system pressure loss purpose.Using the samming dress of the circulatory system of low melting point liquid metal 3 It sets, is not limited by the size of radiator 5.
A kind of temperature equalization system for large scale radiator provided in this embodiment is suitable for larger-size samming ring Fan-free electronic product, such as fan-free notebook computer product can also be applied in border.
The operational process of temperature equalization system provided in this embodiment is as follows:
The substrate of radiator 5 contacted with heat source is embedded with the temperature equalization system, and the flow tube 2 of the temperature equalization system is uniformly distributed In the base plan of radiator 5, there is low melting point liquid metal 3 in flow tube 2, transfer tube 1 is connect with flow tube 2, and can be driven Low melting point liquid metal 3 flows in flow tube 2, and the flowing realization of low melting point liquid metal 3 is distributed to the even heat of heat source Radiator 5 realizes samming.
A kind of temperature equalization system for large scale radiator provided in this embodiment, has the advantage that
(1) by using low melting point liquid metal as flow working medium, this temperature equalization system be suitable for large-sized cold plate or The samming demand of cooling fin, and even temperature effect is significant and stablizes;
(2) red copper is used by flow tube, that is, facilitates welding that can improve the heat exchange between flow tube and cold plate or heat spreader substrate again Performance;
(3) good economy performance, it is easy to process.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want There is also other identical elements in the process, method of element, commodity or equipment.
The foregoing is merely several embodiments of the invention, are not intended to restrict the invention.For art technology For personnel, the invention may be variously modified and varied.All any modifications made within the spirit and principles of the present invention, Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.

Claims (10)

1. a kind of temperature equalization system for large scale radiator, which is characterized in that the base in the radiator (5) is arranged in it Board bottom portion, the temperature equalization system include transfer tube (1), flow tube (2) and low melting point liquid metal (3);
Circulation passage is provided in flow tube (2), and flow tube (2) is flat in the base plate bottom of the radiator (5) It is distributed in face;
The low melting point liquid metal (3) is arranged in the circulation passage of flow tube (2);
The transfer tube (1) connects or contacts with flow tube (2), and the low melting point liquid metal (3) can be driven described Flowing in the circulation passage of flow tube (2);
The cooling fin of the large scale radiator or the length or width of cold plate are greater than 800mm;
Flow tube (2) is embedded in the base plate bottom of radiator (5) by welding.
2. the temperature equalization system according to claim 1 for large scale radiator, which is characterized in that
Flow tube (2) is uniformly distributed in the base plate bottom plane of the radiator (5).
3. the temperature equalization system according to claim 1 for large scale radiator, which is characterized in that
Flow tube (2) is flat tube or round tube.
4. the temperature equalization system according to claim 1 for large scale radiator, which is characterized in that
The temperature equalization system is embedded in the base plate bottom of the radiator (5).
5. the temperature equalization system according to claim 1 or 2 for large scale radiator, which is characterized in that
The area of the radiator (5) is ten times or more of the area of computer processor radiator.
6. the temperature equalization system according to claim 1 for large scale radiator, which is characterized in that
The low melting point liquid metal (3) is gallium, gallium-indium alloy, gallium-indium-tin alloy, indium bismuth copper alloy.
7. the temperature equalization system according to claim 1 for large scale radiator, which is characterized in that
Circulation passage in flow tube (2) is circulation passage and the transfer tube in circulation closed or flow tube (2) (1) runner in forms circulation closed runner.
8. the temperature equalization system according to claim 1-3 for large scale radiator, which is characterized in that
The material of flow tube (2) is the metal material of thermal conductivity height and stable chemical performance.
9. the temperature equalization system according to claim 8 for large scale radiator, which is characterized in that
The material of flow tube (2) is red copper.
10. the temperature equalization system according to claim 1 for large scale radiator, which is characterized in that
The transfer tube (1) is electromagnetic pump or peristaltic pump.
CN201710206046.2A 2017-03-31 2017-03-31 Temperature equalizing device for large-size heat dissipation device Active CN106981464B8 (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109375662A (en) * 2018-10-31 2019-02-22 中国运载火箭技术研究院 A kind of certainly maintenance Active thermal control system of the spacecraft based on liquid metal
CN113438868A (en) * 2021-06-29 2021-09-24 云南靖创液态金属热控技术研发有限公司 Ultrathin heat dissipation device and heat dissipation method

Citations (5)

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Publication number Priority date Publication date Assignee Title
CN201463677U (en) * 2009-06-08 2010-05-12 刘真 Novel heat pipe heat radiator
CN202285109U (en) * 2011-03-15 2012-06-27 范宏伟 Heat pipe radiator for local area network server
CN104930890A (en) * 2014-03-19 2015-09-23 海尔集团公司 Heat exchanger and semi-conductor wine cabinet
CN106439756A (en) * 2016-10-26 2017-02-22 广东合新材料研究院有限公司 S-shaped loop heat pipe radiator for LED
CN206042666U (en) * 2016-09-27 2017-03-22 北京态金科技有限公司 Integral liquid metal heat transfer plate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2575847Y (en) * 2002-10-10 2003-09-24 中国科学院理化技术研究所 Heat radiator for chip heat dissipation
CN2736933Y (en) * 2004-07-02 2005-10-26 中国科学院理化技术研究所 Liquid metal chip radiator driven by thermoelectric-electromagnetic pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201463677U (en) * 2009-06-08 2010-05-12 刘真 Novel heat pipe heat radiator
CN202285109U (en) * 2011-03-15 2012-06-27 范宏伟 Heat pipe radiator for local area network server
CN104930890A (en) * 2014-03-19 2015-09-23 海尔集团公司 Heat exchanger and semi-conductor wine cabinet
CN206042666U (en) * 2016-09-27 2017-03-22 北京态金科技有限公司 Integral liquid metal heat transfer plate
CN106439756A (en) * 2016-10-26 2017-02-22 广东合新材料研究院有限公司 S-shaped loop heat pipe radiator for LED

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CN106981464B8 (en) 2020-03-27

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Inventor after: Huang Gang

Inventor after: Sun Yongsheng

Inventor after: Gong Zhenxing

Inventor after: Feng Guirong

Inventor after: Guo Linzhao

Inventor before: Sun Yongsheng

Inventor before: Gong Zhenxing

Inventor before: Feng Guirong

Inventor before: Guo Linzhao

CI03 Correction of invention patent
CI03 Correction of invention patent

Correction item: Inventor

Correct: Huang Gang|Sun Yongsheng|Gong Zhenxing|Feng Guirong|Guo Linzhao

False: Sun Yongsheng|Gong Zhenxing|Feng Guirong|Guo Linzhao

Number: 47-01

Page: The title page

Volume: 35

Correction item: Inventor

Correct: Huang Gang|Sun Yongsheng|Gong Zhenxing|Feng Guirong|Guo Linzhao

False: Sun Yongsheng|Gong Zhenxing|Feng Guirong|Guo Linzhao

Number: 47-01

Volume: 35

CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 250104, No. 2877, fairway, Sun Town, Ji'nan hi tech Zone, Shandong

Patentee after: SHANDONG CHAOYUE DATA CONTROL ELECTRONICS Co.,Ltd.

Address before: 250104, No. 2877, fairway, Sun Town, Ji'nan hi tech Zone, Shandong

Patentee before: SHANDONG CHAOYUE NUMERICAL CONTROL ELECTRONIC Co.,Ltd.