CN209402952U - A kind of radiator - Google Patents

Abstract

A kind of radiator, it is related to the field of radiating that conducts heat, by thermally conductive core, fin, fixing piece composition, thermally conductive core is a solid or hollow heat carrier or heat pipe, fin is along plane X, the thermal coefficient of Y both direction is 1.2 times of thermal coefficient of its section Z-direction or more of the thermally conductive diaphragm of rail shape, the expansion shape of the thermally conductive diaphragm of rail shape is that tooth row is distributed on a conjugation item, bar shaped heat-conducting pad is equipped on the conjugation item for corresponding to thermally conductive diaphragm, a side section of thermally conductive diaphragm is aligned with a side section of heat-conducting pad, thermally conductive diaphragm is together with heat-conducting pad in thermally conductive core outer circle, thermally conductive diaphragm and heat-conducting pad are fixed in thermally conductive core by fixing piece.The radiator can utilize heat loss through radiation mechanism, realize big thermal capacity, high cooling efficiency, manufacturing process is simple, the low effect of production cost.It is widely used in heat power, power electronics, microelectronics, photoelectronic cooling system.

Description

A kind of radiator

Technical field

The invention belongs to the heat transfer of calorifics scope, especially heat source, heat dissipation technology and devices.

Background technique

The systems such as heat sink applications are converted in various heat powers, electro-optic conversion, electric heating are converted, it is reliable to system operation Property plays a very important role.Especially in circuit system, temperature is very sensitive, and heat dissipation problem has become the bottle of electronic device One of neck.

Radiator used by current power electronics, microelectronics, electro-optical system mainly include metal fin and coating type, Heat pipe-type, microchannel formula, graphite fins formula, graphite film chip etc..Metal fin and coating type are for more demanding heating conduction Place its opposite thermal capacitance is small, thermal coefficient is lower, weight is higher, volume is larger.Heat-pipe type radiator only has one-dimensional heat conduction Ability.Microchannel radiator needs mating circulator, causes volume big, and reliability reduces.Common graphite gilled radiator, though It is so light-weight, but thermal coefficient is still lower.Graphite film chip has the characteristics that the two-dimentional capacity of heat transmission, light-weight, but is primarily present Occupancy plane space is big, and thermal capacitance is small, diaphragm cross-wise direction thermal coefficient is very low, when with plane contact heat source, heat-conducting effect The problems such as substantially reducing.

To solve the above-mentioned problems, Chinese patent CN200510054362.X discloses a kind of " dissipating using graphite as substrate The manufacturing method of hot seat and its graphite ", using graphite as the radiating seat of substrate, another side is equipped with metal covering, and metal surface is connected with Fins group can absorb rapidly the heat source that electronic component is issued, and the stability and extension that electronic component entirety can be improved make With the service life, but and the small problem of unresolved fin material thermal capacitance, radiating efficiency be not also optimal.Although by broken Broken, dipping and graphitizing method, which keep radiating seat thermally conductive, becomes three-dimensional from two dimension, but inevitably in-plane thermal conductivity Decline, manufacturing cost greatly increase.

Chinese patent CN201010160082.8 discloses a kind of " heat radiator with composite structure and preparation method thereof ", by Multi-disc is handed in clamping device with multi-disc using the short fin of flexible graphite material using the long fin of exfoliated-graphite composite One end alignment of mistake arrangement, long fin and short fin, the end face of alignment are equipped with heat-conducting layer.The radiator of this structure has weight Amount is light, thermal resistance is small, the features such as contacting, is with short production cycle.But when using relatively thin flexible membrane, not only pacify in use process It is limited to fill direction, and often will appear flexible membrane bending, accumulation, reduces effective heat dissipation area, it is high-power to be not suitable with manufacture The problems such as radiator, seriously affects result of ventilating heat dissipation；And when using thicker strong fin, and greatly reduce effective heat dissipation Area.

In addition to the above-mentioned problems, the above-mentioned prior art, due to being mostly the placement that is parallel to each other between its each fin, so that heat dissipation What mechanism mainly utilized is the convective heat transfer characteristic between the heat transfer of fin and fin, can not utilize heat loss through radiation machine substantially Reason, needing to install convection fan could effectively use.This is greatly lowered the operational reliability of system.

Summary of the invention

The technical problem to be solved by the present invention is both having made full use of thermally conductive diaphragm along the height of X, Y both direction of plane Thermal coefficient characteristic, and it is able to achieve the heat loss through radiation characteristic using fin；Both biggish heat dissipation area, biggish heat can guarantee Capacity, biggish air flow spaces, and can guarantee the structural stability using radiator when flexible heat sink diaphragm.It realizes simultaneously High heat transfer radiating efficiency, manufacturing process is simple, and production cost is low, is suitable for the purpose of high-power heat-dissipation.

In order to solve the above technical problems, technical solution proposed by the present invention is:

A kind of radiator is made of thermally conductive core, fin, fixing piece, which is characterized in that the thermally conductive core is one Solid thermally conductive cylinder or hollow heat carrier or heat pipe or composite heat-conducting body, the fin are leading along plane X, Y both direction Hot coefficient is 1.2 times of thermal coefficient of its section Z-direction or more of the thermally conductive diaphragm of rail shape, the expansion of the thermally conductive diaphragm of rail shape Shape is that tooth row is distributed on a conjugation item, is equipped with bar shaped heat-conducting pad on the conjugation item for corresponding to thermally conductive diaphragm, leads A side section of film is aligned with a side section of heat-conducting pad, and thermally conductive diaphragm is together with heat-conducting pad wound on thermally conductive In the outer circle of core bottom, the fixing piece is that fixed ring or binding lines, fixing piece fix thermally conductive diaphragm and heat-conducting pad In thermally conductive core, the tooth of each tooth row on radiator top forms the structure radiated to the external space.The radiator of this kind of structure, respectively The heat loss through radiation space formed between the tooth row of thermally conductive diaphragm, can be such that the heat wave between each tooth row is mutually reflected, final heat wave from Radiator outer rim outlet radiant is into environment, when environment space is the cabinet being made of metal cabinet or other Heat Conduction Materials When, interior can coating black heat absorbing coating or correspond to radiator Net long wave radiation heat dissipation range be provided with transparent panel Body；It is also possible to first pass through radiating core and heat is directed to outside shell, then from radiator to external space heat loss through radiation.Even if no Electric fan is installed, which can also generate good heat dissipation effect using radiation mechanism.A kind of above-mentioned radiator It can be by the thermally conductive diaphragm of bull and bull heat-conducting pad together in thermally conductive core outer circle.

A kind of above-mentioned radiator, selectable technical solution are, between each thermally conductive diaphragm or corresponding The heat-conducting pad top of the conjugation item of thermally conductive diaphragm is provided with isolated gate, adjacent thermally conductive diaphragm is isolated space by isolated gate Distance.Isolated gate can be to be wholely set with heat-conducting pad or thermally conductive diaphragm, is also possible to be independently arranged, is independently arranged Shi Keshe It sets between thermally conductive diaphragm or heat-conducting pad, is wrapped in thermally conductive core together with thermally conductive diaphragm and heat-conducting pad.Isolated gate can To be to be arranged one layer along short transverse, it is also possible to that multilayer is arranged.Preferable scheme is that the top in heat-conducting pad is equipped with many Hole will be used as isolated gate in a spring advances through hole.Isolated gate can also be with silk material or sheet material one by one staggeredly across each heat conduction tooth Item weaves.Isolated gate can also be to be made of with wavy mesh-like material.The effect of isolated gate is, when thermally conductive When diaphragm uses flexible membrane, each thermally conductive sheet can be effectively isolated and be come, prevent diaphragm flexes, accumulation, while it is empty to expand radiation Between.

A kind of above-mentioned radiator, selectable technical solution be, thermally conductive diaphragm and thermally conductive core contact surface it Between, between thermally conductive diaphragm and heat-conducting pad and the coating between thermally conductive core, thermally conductive diaphragm, thermally conductive filler strip section and heat source surface There is heat-conducting glue.

A kind of above-mentioned radiator, selectable technical solution are that the thermally conductive diaphragm and heat-conducting pad are a variety of The composite heat-conducting fin of Heat Conduction Material composition or outer surface are covered with or are coated with or impregnate high thermal conductivity, high radiant rate, high reflectance material The roughness of the film of material or the heat carrier of coating, covered film or coating is corresponding with the heat wave wave-length coverage radiated.

A kind of above-mentioned radiator, selectable technical solution be, each thermally conductive diaphragm in radiator outer edge Spacing distance between tooth row is greater than 4 millimeters.

A kind of above-mentioned radiator, selectable technical solution are to be equipped with fixed frame in the bottom of radiator.

The utility model has the advantages that a kind of radiator of the invention, in no electric fan forced convertion heat dissipation, also can get compared with Good heat dissipation effect, can be improved system reliability of operation.Manufacturing process is simple simultaneously, and production cost is low.

Detailed description of the invention:

Fig. 1 is a kind of radiator schematic top plan view of the invention.

Fig. 2 is a kind of axial slices schematic diagram of radiator of Fig. 1.

Fig. 3 is a kind of part plan expanded view of the thermally conductive diaphragm of radiator of Fig. 1.

Fig. 4 is a kind of isolated gate diaphragm part plan expanded view of radiator of Fig. 1.

Fig. 5 is the Longitudinal cross section schematic of Fig. 4 isolated gate.

Specific embodiment

Invention is further described in detail with reference to the accompanying drawings and detailed description.

A kind of radiator shown in attached drawing 1,2,3,4,5, by thermally conductive core 1, fin 2, fixing piece 3, isolated gate 5, Heat-conducting pad 6 forms, and thermally conductive core 1 is a high thermal conductivity graphite column, and fin 2 is the thermal coefficient along plane X, Y both direction It is the thermally conductive diaphragm of rail shape graphene semi-flexible of 3 times of thermal coefficient or more of its section Z-direction, the thermally conductive diaphragm 2 of rail shape Expansion shape (Fig. 3) is that tooth row 11 is distributed on a conjugation item 4, and isolated gate 5 is the elastomer with conjugation portion 7 and rack gear 8 (Fig. 4), a side section of thermally conductive diaphragm 2, the conjugation portion side of isolated gate 5 are aligned with a side section of thermally conductive filler strip 6, lead Film 2, isolated gate 5 and thermally conductive filler strip 6 are together in the outer circle of 1 bottom of thermally conductive core.Fixing piece 3 is a fixed ring, Thermally conductive diaphragm 2, isolated gate 5 and thermally conductive filler strip 6 are fixed in thermally conductive core 1 by fixing piece 3, each tooth row 11 on radiator top Tooth forms the structure radiated to the external space.When radiator is mounted in planar chip 10, by the same of thermally conductive core 1 and fin 2 End face polishes, and is polishing the heat-conducting glue or place mat elasticity high thermal conductivity gasket that high thermal conductivity is smeared between end face and heat source 10.It should The radiator of structure is planted, heat loss through radiation space can be formed between each fin, the heat wave between each fin is mutually reflected, final heat wave From radiator outer rim outlet radiant into environment.Even if not installing electric fan, which can also be generated using radiation mechanism Good heat dissipation effect.

Although having been combined preferred embodiment describes the device of the invention, the present invention is not limited to as described herein Concrete form, on the contrary, its object is to cover naturally fall into the scope of the invention that described claims limit Various alternatives, remodeling, various characteristic elements recombinant and derivative Combination nova and equivalents.

Claims (6)

1. a kind of radiator is made of thermally conductive core, fin, fixing piece, which is characterized in that the thermally conductive core is one real The heart or hollow heat carrier or heat pipe or composite radiating body, it is it that the fin, which is along the thermal coefficient of plane X, Y both direction, 1.2 times of thermal coefficient or more of the thermally conductive diaphragm of rail shape of section Z-direction, the expansion shape of the thermally conductive diaphragm of rail shape is one Tooth row is distributed on conjugation item, is equipped with bar shaped heat-conducting pad on the conjugation item for corresponding to thermally conductive diaphragm, the one of thermally conductive diaphragm Side section is aligned with a side section of heat-conducting pad, and thermally conductive diaphragm is together with heat-conducting pad outside thermally conductive core bottom On circle, the fixing piece is that thermally conductive diaphragm and heat-conducting pad are fixed in thermally conductive core by fixed ring or binding lines, fixing piece, The tooth of each tooth row on radiator top forms the structure radiated to the external space.

2. a kind of radiator according to claim 1, which is characterized in that between each thermally conductive diaphragm or corresponding The heat-conducting pad top of the conjugation item of thermally conductive diaphragm is provided with isolated gate, adjacent thermally conductive diaphragm is isolated space by isolated gate Distance.

3. a kind of radiator according to claim 1 or 2, which is characterized in that connect in thermally conductive diaphragm with thermally conductive core Between contacting surface, applied between thermally conductive diaphragm and heat-conducting pad and between thermally conductive core, thermally conductive diaphragm, heat-conducting pad and heat source surface Equipped with heat-conducting glue.

4. a kind of radiator according to claim 3, which is characterized in that the thermally conductive diaphragm and heat-conducting pad are more The composite heat-conducting fin of kind Heat Conduction Material composition or outer surface are covered with or are coated with or impregnate high thermal conductivity, high radiant rate, high reflectance The roughness of the film of material or the heat carrier of coating, covered film or coating is corresponding with the heat wave wave-length coverage radiated.

5. a kind of radiator according to claim 3, which is characterized in that each layer of the radiator outer edge is thermally conductive Spacing distance between the tooth row of diaphragm is greater than 4 millimeters.

6. a kind of radiator according to claim 5, which is characterized in that be equipped with fixation in the bottom of radiator Frame.