CN107166992A - The processing method of refrigerant fin, air-conditioning and refrigerant fin - Google Patents

The processing method of refrigerant fin, air-conditioning and refrigerant fin Download PDF

Info

Publication number
CN107166992A
CN107166992A CN201710413663.XA CN201710413663A CN107166992A CN 107166992 A CN107166992 A CN 107166992A CN 201710413663 A CN201710413663 A CN 201710413663A CN 107166992 A CN107166992 A CN 107166992A
Authority
CN
China
Prior art keywords
refrigerant
radiator
hot channel
fin
channel
Prior art date
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.)
Pending
Application number
CN201710413663.XA
Other languages
Chinese (zh)
Inventor
宫华耀
何成军
杜明龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Original Assignee
Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Hisense Hitachi Air Conditioning System Co Ltd filed Critical Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority to CN201710413663.XA priority Critical patent/CN107166992A/en
Publication of CN107166992A publication Critical patent/CN107166992A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0475Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits having a single U-bend
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081Heat exchange elements made from metals or metal alloys
    • F28F21/084Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081Heat exchange elements made from metals or metal alloys
    • F28F21/085Heat exchange elements made from metals or metal alloys from copper or copper alloys

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The processing method that the present invention proposes a kind of refrigerant fin, air-conditioning and refrigerant fin, wherein, refrigerant fin includes radiator, heat dissipation channel is formed with the radiator, interference fit has the hot channel of negotiable refrigerant in the heat dissipation channel, refrigerant circulates out of described hot channel, so that the hot channel exchanges heat with the radiator;Air-conditioning includes above-mentioned refrigerant fin;And the processing method of refrigerant fin processes refrigerant fin by way of tube expansion.The invention can not only realize good radiating effect, and cost is relatively low.

Description

The processing method of refrigerant fin, air-conditioning and refrigerant fin
Technical field
The invention belongs to refrigerant field, more particularly to a kind of refrigerant fin suitable for frequency conversion substrate.
Background technology
With the progress that heat dissipation technology is maked rapid progress, refrigerant heat dissipation technology also reaches its maturity.Refrigerant radiates, and is relative to biography System wind-cooling heat dissipating and the heat sinking mode that designs, occupy little space the features such as high with radiating efficiency, and by cold in system Matchmaker is circulated to take away waste heat, also improves the utilization rate of coolant system.It is designed for there is the machine of refrigerant heat sinking function Refrigerant heat sink mainly to reduce in electrical appliance kit for the purpose of high power device heat, such as IGBT, IPM etc..
Radiating mode widely used at present is predominantly using copper pipe together with cold and hot embedded, and refrigerant and copper pipe are carried out Heat exchange, copper pipe is exchanged heat with fin again, under this kind of mode, because needing by exchanging heat twice, such as between copper pipe and cold and hot It can not be brought into close contact, then heat exchange efficiency will be substantially reduced.For the radiating of this kind of mode, the processing side used at present to fin Formula mainly has following several:
(1) copper pipe is pressed into aluminium alloy plate by press-fitted technique, the concrete operation step of this kind of mode is:First in aluminium Oval groove is opened up in alloy sheets, then will be by being pressure bonded on aluminium plywood.On the one hand this kind of scheme easily cause because snapping mode Copper pipe and aluminium alloy pressing are uneven, cause heat-sinking capability undesirable, stress concentration;On the other hand this kind of mode workpiece quilt is passed through That destroys is higher, adds cost.
(2) it is processed by Sheet Metal Forming Technology, this kind of processing mode wide mould over needing, and has higher to press machine Accuracy requirement, greatly improve production cost.
The content of the invention
In order to solve the above problems, the invention provides the processing of a kind of refrigerant fin, air-conditioning and refrigerant fin Mode, the invention can not only realize good radiating effect, and cost is relatively low.
In order to achieve the above object, the technical solution adopted by the present invention is:
Mistake in heat dissipation channel, the heat dissipation channel is formed with a kind of refrigerant fin, including radiator, the radiator Be full of the hot channel for being combined with negotiable refrigerant, refrigerant circulates out of described hot channel so that the hot channel with it is described Radiator exchanges heat.
As the further optimization of the present invention, the hot channel has refrigerant import and refrigerant exit, the radiating tube Bending part is formed with road, the bending part is formed at the radiator side, the refrigerant import and the refrigerant exit shape The relative radiator opposite side of bending part described in Cheng Yuyu.
As the further optimization of the present invention, the radiator is the rigid material with thermal conductivity;The hot channel For the soft materials that can be deformed under external force.
As the further optimization of the present invention, the radiator is aluminum alloy material, and the hot channel is metal copper material Matter.
As the further optimization of the present invention, the heat dissipation channel is two parallel channels through radiator.
As the further optimization of the present invention, the hot channel is " U " type.
As the further optimization of the present invention, the radiator is tabular, sheet or bulk.
Laminating is provided with refrigerant fin described above on a kind of air-conditioning, including heater, the heater.
As the further optimization of the present invention, the heater is frequency conversion substrate or blower fan module.
A kind of processing method of refrigerant fin, for processing refrigerant fin described above, comprises the following steps:By institute Hot channel is stated to be inserted in the heat dissipation channel;The swollen head of electric tube expander is stretched in hot channel, and hot channel is swollen Greatly, it is interference fitted up to hot channel is swollen to heat dissipation channel.
Compared with prior art, advantages and positive effects of the present invention are:
1st, refrigerant fin of the invention, by the interference fit of hot channel and radiator, improves dissipating for fin The thermal efficiency, and easy processing simple in construction, have saved processing cost;
2nd, the processing mode of refrigerant fin of the present invention, by hot channel and radiator formation interference by way of tube expansion Coordinate, the processing mode need not additionally open up gabarit mould, and be processed by tube expansion mode, make hot channel and radiating Cooperation between body evenly, realizes the uniform unification of heat-sinking capability.
Brief description of the drawings
Fig. 1 is the stereogram of refrigerant fin of the present invention;
Fig. 2 is the front view of refrigerant fin of the present invention;
The sectional view that Fig. 3 is A-A in Fig. 2;
Fig. 4 is the scheme of installation of refrigerant fin.
Above in each figure:1st, radiator;2nd, hot channel;21st, refrigerant import;22nd, refrigerant exit;23rd, kink;3rd, send out Hot body.
Embodiment
Below, the present invention is specifically described by exemplary embodiment.It should be appreciated, however, that not entering one In the case of step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiment In.
In the description of the invention, it is necessary to explanation, the instruction such as term " interior ", " outer ", " on ", " under ", "front", "rear" Orientation or position relationship be based on position relationship shown in the drawings, be for only for ease of description the present invention and simplify description, and It is not instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore It is not considered as limiting the invention.
It is the structural representation of refrigerant fin of the present invention referring to Fig. 1-Fig. 3.As illustrated, the refrigerant radiating of the present invention Piece, including radiator 1, the radiator 1 can be tabular, sheet or bulk, or other irregular shapes, herein for it Concrete shape is not limited.Interference fit in heat dissipation channel, the heat dissipation channel is formed with the radiator 1 negotiable cold The hot channel 2 of matchmaker, refrigerant circulates out of described hot channel 2, so that the hot channel 2 exchanges heat with the radiator 1.Make Used time, refrigerant fin is positioned over by heater, refrigerant circulates out of hot channel, refrigerant is changed with hot channel first Heat, then hot channel further exchanged heat with heater, because of the interference fit between hot channel and radiator so that Refrigerant in circulation hot channel can rapidly complete heat exchange, improve heat exchange efficiency.
Referring particularly to Fig. 2, the hot channel 2 has shape on refrigerant import 21 and refrigerant exit 22, the hot channel 2 Into there is bending part 23, the bending part 23 is formed at the side of radiator 1, the refrigerant import 21 and the refrigerant exit 22 It is formed at the radiator 1 opposite side relative with the bending part 23.It should be noted that showing refrigerant import 21 in Fig. 2 The right side of refrigerant exit 22 is arranged at, and in invention, the specific set location for refrigerant import and refrigerant exit is not limited It is fixed, also do not limited for the spacing between refrigerant import and refrigerant exit.
In addition, the radiator 1 is preferably the rigid material with thermal conductivity;The hot channel 2 is preferably can be outside The soft materials of the lower deformation of power effect.Based on this, the radiator 1 is preferably aluminum alloy material, and the hot channel 2 is preferably Metal copper material.Radiator 1 selects aluminum alloy material, it is advantageous that, not only thermal conductivity is high, and hardness is high, and aluminum alloy material Relatively economical cost is smaller;And hot channel 2 selects metal copper material, its advantage is lain also in, and thermal conductivity is higher and belongs to soft Material, financial cost is relatively low.
In addition, the heat dissipation channel of the present invention is two parallel channels through radiator 1.The hot channel 2 For " U " type or " Qian " type.When hot channel 2 is matched with radiator 1, its two ends end stretch to two of heat dissipation channel it is parallel logical In road, kink indwelling is in the outside of radiator 1.In addition, above-mentioned hot channel 2 is preferably U-shaped, because of U-shaped kink transition It is more round and smooth, larger stress will not be produced, service life is extended.
Referring to Fig. 4, present invention also offers a kind of air-conditioning, including heater 3, fit and be provided with the heater 3 The refrigerant fin stated.Specifically describe, will not be repeated here for refrigerant fin because above-mentioned.Wherein, the heater 3 can For frequency conversion substrate or blower fan module.Meanwhile, in the present invention, other structures for air-conditioning and without modification are cold only for its Matchmaker's fin is improved, therefore, and air-conditioning of the invention does not refer to that structure is prior art, in the present invention no longer to it Concrete structure is repeated.
In addition, present invention also offers a kind of processing method of refrigerant fin, for processing refrigerant radiating described above Piece, comprises the following steps:The hot channel is inserted in the heat dissipation channel;The swollen head of electric tube expander is stretched into radiating tube In road, and hot channel is swollen, be interference fitted until hot channel is swollen to heat dissipation channel.
Further, above-mentioned expansion method is specifically described:Electric tube expander can select hydraulic casing roller or mechanical expanding Machine, two kinds of electric tube expanders are prior art, and its structure is not specifically described at this.It is preferably mechanical expanding in the present invention Machine.
Wherein, when from hydraulic casing roller, hot channel is inserted in heat dissipation channel first, Hydraulic Expansion is ready for Pipe machine:Copper tube aluminum string is good, and header type elbow is all welded, lead to high pressure refrigerant (such as water), hydraulic pressure is increased to 1200- 200kg/cm2When, copper pipe is swollen with hydraulic coupling, itself and aluminium flake is in close contact, until hot channel it is swollen to and heat dissipation channel Interference fit.This processing method is that technique is simple to operation.The disadvantage is that, needing to clean equipment after tube expansion.
When from mechanical expanding machine, the explanation by taking expander roll formula mechanical expanding as an example:Because hot channel is soft, and radiate Body is hard state, and the swollen head of steel alloy is pushed into hot channel internal diameter by force with mechanical force, hot channel is swollen, the calculating of tube expansion amount It is finally that guarantee hot channel and radiator are tight including hot channel external diameter overgauge, aluminium flake hole internal diameter minus deviation, poling spacing Close combination, further increases bulk, so as to form interference fit between hot channel and radiator.The value of the magnitude of interference can be advance Setting, the value standard of the magnitude of interference will also ensure thermal shock for that should ensure self shrinking of the hot channel after mechanical expanding In the presence of, hot channel is combined closely with radiator inwall, to reduce thermal resistance, it is ensured that heat transfer.It is not required in the processing method Additionally to open up gabarit mould, the size of hot channel and heat dissipation channel is typically all standardization, thus process into Product uniformity preferably, also relatively unify by heat-sinking capability.
Below, in order to further protrude creativeness of the invention, by the processing method of the present invention and existing preferable punching press Heat-sinking capability of processing method etc. carries out Experimental Comparison and is analyzed as follows:
In this experiment, the refrigerant fin of expansion method of the present invention will be used respectively with using prior art punching press The heat-sinking capability of the refrigerant fin of mode is contrasted, it is necessary to illustrate, in this experiment, the refrigerant fin of selection, which is removed, to be added Work mode is different, and other structures etc. are consistent.
The Experimental Comparison table of the present invention of table 1 and prior art
By the above-mentioned experimental result of table 1, using the processing method of the present invention, its heat-sinking capability is significantly stronger than existing skill The processing method used in art, and the processing method of the present invention is easily operated, and with more practicality, cost performance is higher.

Claims (10)

1. a kind of refrigerant fin, including radiator, it is characterised in that:Heat dissipation channel is formed with the radiator, it is described to dissipate Interference fit has the hot channel of negotiable refrigerant in the passage of heat, and refrigerant circulates out of described hot channel, so that the radiating Pipeline exchanges heat with the radiator.
2. refrigerant fin according to claim 1, it is characterised in that:The hot channel has refrigerant import and refrigerant Outlet, is formed with bending part on the hot channel, and the bending part is formed at the radiator side, the refrigerant import and The refrigerant exit is formed at the radiator opposite side relative with the bending part.
3. refrigerant fin according to claim 1 or 2, it is characterised in that:The radiator is with the hard of thermal conductivity Property material;The hot channel is the soft materials that can be deformed under external force.
4. refrigerant fin according to claim 3, it is characterised in that:The radiator is aluminum alloy material, described to dissipate Hot channel is metal copper material.
5. refrigerant fin according to claim 1, it is characterised in that:The heat dissipation channel is through the two of radiator Bar parallel channels.
6. refrigerant fin according to claim 1 or 2, it is characterised in that:The hot channel is " U " type.
7. refrigerant fin according to claim 1, it is characterised in that:The radiator is tabular, sheet or bulk.
8. a kind of air-conditioning, including heater, it is characterised in that:Laminating is provided with any in claim 1-7 on the heater The item refrigerant fin.
9. air-conditioning according to claim 8, it is characterised in that:The heater is frequency conversion substrate or blower fan module.
10. a kind of processing method of refrigerant fin, for processing refrigerant fin any one of claim 1-7, its It is characterised by:Comprise the following steps:
The hot channel is inserted in the heat dissipation channel;
The swollen head of electric tube expander is stretched in hot channel, and hot channel is swollen, until hot channel is swollen to logical with radiating Road is interference fitted.
CN201710413663.XA 2017-06-05 2017-06-05 The processing method of refrigerant fin, air-conditioning and refrigerant fin Pending CN107166992A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710413663.XA CN107166992A (en) 2017-06-05 2017-06-05 The processing method of refrigerant fin, air-conditioning and refrigerant fin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710413663.XA CN107166992A (en) 2017-06-05 2017-06-05 The processing method of refrigerant fin, air-conditioning and refrigerant fin

Publications (1)

Publication Number Publication Date
CN107166992A true CN107166992A (en) 2017-09-15

Family

ID=59824532

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710413663.XA Pending CN107166992A (en) 2017-06-05 2017-06-05 The processing method of refrigerant fin, air-conditioning and refrigerant fin

Country Status (1)

Country Link
CN (1) CN107166992A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108258161A (en) * 2018-01-02 2018-07-06 苏州安靠电源有限公司 The cold battery case of liquid and its preparation method, box type battery
CN108344322A (en) * 2018-03-28 2018-07-31 长沙格力暖通制冷设备有限公司 Finned heat exchanger and air conditioner
CN108390127A (en) * 2018-04-13 2018-08-10 苏州安靠电源有限公司 A kind of liquid cooling battery case and its preparation method
CN108966609A (en) * 2018-09-10 2018-12-07 珠海格力电器股份有限公司 Radiator and electrical part

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103915986A (en) * 2013-01-08 2014-07-09 苏州三星电子有限公司 Coolant cooler for frequency conversion module
CN104359332A (en) * 2014-10-16 2015-02-18 广东美的制冷设备有限公司 Heat radiator for air conditioner and air conditioner provided with heat radiator
CN105588322A (en) * 2014-12-26 2016-05-18 海信(山东)空调有限公司 Cooling device and air conditioner with same
CN205305312U (en) * 2015-11-24 2016-06-08 青岛海尔空调电子有限公司 Refrigerant heat abstractor and tame electric installation
CN206944755U (en) * 2017-06-05 2018-01-30 青岛海信日立空调系统有限公司 Refrigerant fin and air-conditioning

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103915986A (en) * 2013-01-08 2014-07-09 苏州三星电子有限公司 Coolant cooler for frequency conversion module
CN104359332A (en) * 2014-10-16 2015-02-18 广东美的制冷设备有限公司 Heat radiator for air conditioner and air conditioner provided with heat radiator
CN105588322A (en) * 2014-12-26 2016-05-18 海信(山东)空调有限公司 Cooling device and air conditioner with same
CN205305312U (en) * 2015-11-24 2016-06-08 青岛海尔空调电子有限公司 Refrigerant heat abstractor and tame electric installation
CN206944755U (en) * 2017-06-05 2018-01-30 青岛海信日立空调系统有限公司 Refrigerant fin and air-conditioning

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108258161A (en) * 2018-01-02 2018-07-06 苏州安靠电源有限公司 The cold battery case of liquid and its preparation method, box type battery
CN108344322A (en) * 2018-03-28 2018-07-31 长沙格力暖通制冷设备有限公司 Finned heat exchanger and air conditioner
CN108344322B (en) * 2018-03-28 2023-12-15 长沙格力暖通制冷设备有限公司 Fin heat exchanger and air conditioner
CN108390127A (en) * 2018-04-13 2018-08-10 苏州安靠电源有限公司 A kind of liquid cooling battery case and its preparation method
CN108966609A (en) * 2018-09-10 2018-12-07 珠海格力电器股份有限公司 Radiator and electrical part
CN108966609B (en) * 2018-09-10 2023-10-10 珠海格力电器股份有限公司 Heat dissipating device and electric device

Similar Documents

Publication Publication Date Title
CN107166992A (en) The processing method of refrigerant fin, air-conditioning and refrigerant fin
CN206024380U (en) Air-cooled radiator heat pipe press-loading process structure
CN102203538B (en) Gas cooler
CN206944755U (en) Refrigerant fin and air-conditioning
JP2015215141A (en) Heat exchanger and cooling system using the same
CN103264076A (en) Heat pipe bending method and heat pipe bending production device
CN203224159U (en) Heat pipe structure
CN207197004U (en) A kind of wire tube condenser
CN201066983Y (en) Improved fitting structure of heat radiator base and thermal pipe
CN105135924A (en) Heat exchange device used for circulating cooling system and manufacturing method
CN109640581A (en) A kind of air cold plate and its processing method of embedded heat pipes
CN209484870U (en) A kind of integrally formed profile-type is without water radiator
CN209265374U (en) Heat more heat-pipe radiators unevenly distributed
CN2783249Y (en) Aluminium-steel composite profile material
CN206909017U (en) A kind of monoblock type section bar soaking plate radiator
CN201159609Y (en) Double-water channel wing shaped radiation fin sectional material
CN209527039U (en) It is a kind of using air-cooled heat pipe cold plate
CN207043129U (en) The drilling forming device of fin
CN206449942U (en) A kind of finned cooler
WO2019090791A1 (en) Condenser, and manufacturing tool and manufacturing method for same
CN204651355U (en) A kind of radiating subassembly
CN104923689A (en) Heat dissipation module manufacturing method and heat dissipation module
CN201062929Y (en) Compact construction for heat pipe and radiating fin
CN208859942U (en) Small diameter tube thin-wall tube inserts the pipeline loop structure of expanding evaporator
CN212970516U (en) Heat radiation structure with D-shaped heat conduction pipe

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20170915

RJ01 Rejection of invention patent application after publication