CN107995831A - A kind of mute central control machine case of smart home - Google Patents
A kind of mute central control machine case of smart home Download PDFInfo
- Publication number
- CN107995831A CN107995831A CN201711298649.6A CN201711298649A CN107995831A CN 107995831 A CN107995831 A CN 107995831A CN 201711298649 A CN201711298649 A CN 201711298649A CN 107995831 A CN107995831 A CN 107995831A
- Authority
- CN
- China
- Prior art keywords
- upper strata
- case lid
- cabinet according
- lower floor
- thermal expansion
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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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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20436—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The present invention relates to a kind of mute central control machine case of smart home, including upper strata case lid, the control mainboard in intermediate layer and lower floor's bottom, the mounting hole to match is equipped with upper strata case lid, the control mainboard in intermediate layer and lower floor's bottom, control mainboard is equipped with core processor, the boss to match with core processor is equipped with the case lid of upper strata, boss is equipped with the heat bulge of large area distribution, and heat bulge is fitted closely with core processor；Upper strata case lid and lower floor's bottom inner surface are covered with electromagnetic shielding material layer.
Description
Technical field
The present invention relates to Smart Home technical field, more particularly to a kind of mute central control machine case of smart home.
Background technology
In smart home, central control machine case is extremely important, the also functional requirement in addition to beautiful requirement.Machine
Case first has to good electromagnetic shielding action, in addition can radiate well.
The functional requirement of heat dissipation is generally solved by additional radiator fan.Radiator fan generally has two：Core processing
One is filled on device, one is filled on cabinet.Core processor fan is responsible for processor heat to take away processor surface, into cabinet
In interior environment；And case fan is then responsible for the heat of interior environment to take out of outside babinet.Existing body structure can meet conventional
Functional requirement, but there are problems that two, first, loud noise can be produced, influence the good experience of smart home；Second, have ash
Dirt enters cabinet inside, the time grown it is later can be cumulative, if cleared up not in time, be likely to result in short circuit, influence to set
Standby normal operation.The solution of noise problem can only be by selecting the more preferable fan of performance to realize, but can cause equipment cost
Rise.
In addition, existing body structure cannot meet electro-magnetic screen function.
The content of the invention
The present invention is intended to provide a kind of mute central control machine case of smart home, set forth above to solve the problems, such as.
A kind of mute central control machine case of smart home, including upper strata case lid, centre are provided in the embodiment of the present invention
The control mainboard and lower floor's bottom of layer, are equipped with the peace to match in upper strata case lid, the control mainboard in intermediate layer and lower floor's bottom
Hole is filled, control mainboard is equipped with core processor, the boss to match with core processor is equipped with the case lid of upper strata, is set on boss
There is the heat bulge that large area is distributed, heat bulge is fitted closely with core processor；Upper strata case lid and lower floor's bottom inner surface
It is covered with electromagnetic shielding material layer.
Preferably, which is based on composite wave-suction material, and the composite wave-suction material is using epoxy resin as base
Bottom, using thermal expansion graphene, carbon fiber, carbonyl iron dust, nickel-copper ferrite composite nano materials as filler, is stirred by vacuum defoamation
Mix process is made, and uniform filling is distributed in the substrate.
The technical solution that the embodiment of the present invention provides can include the following benefits：
1st, by being covered with electromagnetic shielding material layer in upper strata case lid and lower floor's bottom inner surface, reached to electromagnetic wave wideband
The effect that section absorbs；
2nd, upper strata case lid directly contacts core processor to radiate, equivalent to use using large area heat bulge on boss
The radiator of large volume, and traditional heat-dissipating fan is eliminated, it can so be effectively reduced central control machine case noise；While by
It is mechanical structure in traditional heat-dissipating fan, can irregularly breaks down after long operational time, therefore cancelling radiator fan can strengthens and be
System stability；Since upper strata case lid is fitted closely with lower floor bottom, it is completely sealed structure, efficiently avoid dust and enter machine
Control mainboard is contacted inside case, further enhances system stability；In addition, upper strata case lid and lower floor's bottom use aluminium
Alloy is made, and has more preferable capability of electromagnetic shielding.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.It should be appreciated that the general description and following detailed description of the above are only
It is exemplary and explanatory, the present invention can not be limited.
Brief description of the drawings
Using attached drawing, the invention will be further described, but the embodiment in attached drawing does not form any limit to the present invention
System, for those of ordinary skill in the art, without creative efforts, can also obtain according to the following drawings
Other attached drawings.
Fig. 1 is the structure diagram of cabinet of the present invention；
Fig. 2 is the sectional view of cabinet of the present invention；
Fig. 3 be I in Fig. 2 at structure enlargement diagram.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During attached drawing, unless otherwise indicated, the same numbers in different attached drawings represent the same or similar key element.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects being described in detail in claims, of the invention.
The embodiment of the present invention is related to a kind of mute central control machine case of smart home, including upper strata case lid 1, intermediate layer
Control mainboard 2 and lower floor's bottom 3, upper strata case lid 1 and lower floor's bottom 3 are made of aluminium alloy, and inner surface is covered with electromagnetic shielding
Material layer, upper strata case lid 1, intermediate layer control mainboard 2 and lower floor's bottom 3 on be equipped with the mounting hole 4 to match, control mainboard
2 are equipped with core processor 21, are equipped with the boss 11 to match with core processor 21 in upper strata case lid 1, boss 11 is equipped with
The heat bulge 12 of large area distribution, heat bulge 12 are fitted closely with core processor 21, while can be in heat bulge 12
Heat conduction silicone is set between core processor 21.
In system operation, the heat of core processor 21 is transferred out by the upper strata case lid 1 being in direct contact with it
Go.Upper strata case lid 1 at this time is equivalent to the amplified version of common computer radiator, simply radiates without common computer
Radiator fan on device, and whole mainboard has been wrapped up in shape.For smart home industry, the core of control mainboard 2
Processor 21 is all low-power consumption version, it is well positioned to meet cooling requirements, and seals mainboard, and no dust is noiseless.
In addition, upper strata case lid 1 and 3 inner surface of lower floor's bottom are covered with electromagnetic shielding material layer, the electromagnetic shielding material layer base
In composite wave-suction material, the composite wave-suction material using epoxy resin as substrate, with thermal expansion graphene, carbon fiber, carbonyl iron dust,
Nickel-copper ferrite composite nano materials are filler, are made by vacuum defoamation paddling process, and uniform filling is distributed in the substrate.
Traditional electromagnetic shielding material generally adds single filler, and when using single filler, single filler is deposited
Efficiency is not high enough, screening frequencies is narrow the problem of, therefore, Composite is a kind of to obtain the effective of the good absorbing material of shield effectiveness
Approach.In the composite wave-suction material of the present invention, thermal expansion graphene, carbon fiber are used as conductive filler, carbonyl iron dust, ambrose alloy iron
Oxysome composite nano materials are magnetic fillers, by the combined use of above-mentioned conductive filler and magnetic fillers, generate expectation not
To the advantages of absorption by force for broadband electromagnetic wave, enhance application range.
Preferably, in the composite wave-suction material, thermal expansion graphene, carbon fiber are conductive filler, and content is respectively
2wt%, 7wt%, carbonyl iron dust, nickel-copper ferrite composite nano materials are magnetic fillers, and content is respectively 4wt%, 11wt%.
Under above-mentioned conductive filler and magnetic fillers content standard, the composite wave-suction material is equal for the electromagnetic wave in 2~20GHz frequency ranges
With good absorbing property, maximum absorption 33.6dB, and suction intensity of wave uniformity is preferable in the frequency range, average to inhale
Receipts amount is 29.8dB.
Preferably, the composite wave-suction material preparation process is as follows：
A) thermal expansion graphene, is prepared：Graphene oxide is prepared, then, powdered graphene oxide is placed on stainless
In steel box, which is placed in 56s in 1100 DEG C of Muffle furnace, further takes out and is cooled to room temperature, obtains thermal expansion graphite
Alkene；
B) nickel-copper ferrite composite nano materials, are prepared：Configure molar ratio 2:2:1:1 CuSO4·5H2O、NiSO4·
7H2O、FeCl3·6H2O、Fe SO4·6H2The aqueous solution 100ml of O, magnetic agitation 1h, is then slowly added to NaOH aqueous solutions, directly
PH value to mixed solution reaches 11.4, then pours into mixed solution in reaction kettle, keeps 6h at 180 DEG C, product is used
Deionized water and ethanol eccentric cleaning, polyaniline/nickel-copper ferrite composite nano materials are obtained after dry；
C) composite wave-suction material, is prepared：Take thermal expansion graphene, carbon fiber, carbonyl iron dust, nickel-copper ferrite composite Nano
Material, epoxy resin, methyl hexahydrophthalic anhydride, DMP30, are added in Centrifuge Cup, and Centrifuge Cup then is placed in planetary vacuum stirs
Deaeration machine is mixed, traditional vacuum stirring deaeration 15min, Centrifuge Cup is taken out, then pours into mixture in Centrifuge Cup in mould,
Mould is placed in baking oven, 80 DEG C of curings 6h, 100 DEG C of curings 4h, 130 DEG C of curing 2h, after mould is cooled to room temperature, by sample
Taking-up is cut to suitable dimension, up to the broadband composite wave-suction material.
In above-mentioned conductive filler, the length of the carbon fiber is 400 μm, a diameter of 20 μm.In the technical program, carbon fiber and
Thermal expansion graphene is as conductive filler, on the one hand, and above two material is high conductive material, in addition, in the substrate, the carbon
Fiber can contact with each other and then construct three-dimensional conductive grid, and the substrate for avoiding being insulated is surrounded, along with thermal expansion graphene
Modification, good effectiveness can be played.By controlling the size of carbon fiber, expectation is generated for absorbing property
Less than beneficial effect.
In above-mentioned magnetic fillers, the carbonyl iron dust is spherical for 10 μm of particle diameter.Common magnetic fillers have ferrite, metal
Micro mist and carbonyl iron etc.；In technical solution of the present invention, carbonyl iron dust, nickel-copper ferrite composite nano materials is used to be filled out for magnetism
Material, by quality proportioning and size Control, generates unexpected technique effect so that composite wave-suction material of the present invention
With good electromagnetic wave absorption effect, with reference to above-mentioned conductive filler so that composite wave-suction material of the present invention is wider
There is good effectiveness in frequency range.
Embodiment 1
In the present embodiment, which is based on composite wave-suction material, and the composite wave-suction material is with epoxy resin
For substrate, using thermal expansion graphene, carbon fiber, carbonyl iron dust, nickel-copper ferrite composite nano materials as filler, taken off by vacuum
Bubble paddling process is made, and uniform filling is distributed in the substrate.
In the composite wave-suction material, thermal expansion graphene, carbon fiber are conductive filler, content be respectively 2wt%,
7wt%, carbonyl iron dust, nickel-copper ferrite composite nano materials are magnetic fillers, and content is respectively 4wt%, 11wt%.
The composite wave-suction material preparation process is as follows：
A) thermal expansion graphene, is prepared：Graphene oxide is prepared, then, powdered graphene oxide is placed on stainless
In steel box, which is placed in 56s in 1100 DEG C of Muffle furnace, further takes out and is cooled to room temperature, obtains thermal expansion graphite
Alkene；
B) nickel-copper ferrite composite nano materials, are prepared：Configure molar ratio 2:2:1:1 CuSO4·5H2O、NiSO4·
7H2O、FeCl3·6H2O、Fe SO4·6H2The aqueous solution 100ml of O, magnetic agitation 1h, is then slowly added to NaOH aqueous solutions, directly
PH value to mixed solution reaches 11.4, then pours into mixed solution in reaction kettle, keeps 6h at 180 DEG C, product is used
Deionized water and ethanol eccentric cleaning, polyaniline/nickel-copper ferrite composite nano materials are obtained after dry；
C) composite wave-suction material, is prepared：Take thermal expansion graphene, carbon fiber, carbonyl iron dust, nickel-copper ferrite composite Nano
Material, epoxy resin, methyl hexahydrophthalic anhydride, DMP30, are added in Centrifuge Cup, and Centrifuge Cup then is placed in planetary vacuum stirs
Deaeration machine is mixed, traditional vacuum stirring deaeration 15min, Centrifuge Cup is taken out, then pours into mixture in Centrifuge Cup in mould,
Mould is placed in baking oven, 80 DEG C of curings 6h, 100 DEG C of curings 4h, 130 DEG C of curing 2h, after mould is cooled to room temperature, by sample
Taking-up is cut to suitable dimension, up to the broadband composite wave-suction material.
In above-mentioned conductive filler, the length of the carbon fiber is 400 μm, a diameter of 20 μm.
In above-mentioned magnetic fillers, the carbonyl iron dust is spherical for 10 μm of particle diameter.
Embodiment 2
On the basis of embodiment 1, difference is：
The length of the carbon fiber is 800 μm, a diameter of 50 μm.
Embodiment 3
On the basis of embodiment 1, difference is：
The carbonyl iron dust is spherical for 40 μm of particle diameter.
Preferably, such as following table, the reflection for being the composite wave-suction material that is obtained to above-described embodiment in 2~20GHz frequency ranges
Loss：
| 2(Hz) | 6(Hz) | 10(Hz) | 14(Hz) | 18(Hz) | 20(Hz) | |
| Embodiment 1 | -28.3dB | -28.1dB | -30.4dB | -33.6dB | -32.9dB | -25.2dB |
| Embodiment 2 | -3.2dB | -3.6dB | -6.5dB | -5.2dB | -5.7dB | -3.5dB |
| Embodiment 3 | -4.2dB | -3.2dB | -7.8dB | -7.2dB | -6.9dB | -4.5dB |
Seen by upper table, embodiment 1 is contrasted with embodiment 2,3, in change carbon fiber, the situation of carbonyl iron dust size
Under, the absorbing property of the composite wave-suction material declines seriously, and in embodiment 1, the composite wave-suction material is for 2~20GHz frequencies
Electromagnetic wave in section is respectively provided with good absorbing property, maximum absorption 33.6dB, and intensity of wave one is inhaled in the frequency range
Cause property is preferable, and average absorption amount is 29.8dB, achieves unexpected technique effect, and multiple elements design absorbing material performance is obvious
Improve, moreover, there is low density, light weight, inhale wave frequency bandwidth.In embodiment 2,3, by varying carbon fiber size,
Carbonyl iron dust size, the composite wave-suction material decline for the absorbing property of electromagnetic wave, inhale wave frequency band and narrow.
The foregoing is merely the preferred mode of the present invention, it is not intended to limit the invention, it is all in the spiritual and former of the present invention
Within then, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.
Claims (9)
- A kind of 1. mute central control machine case of smart home, it is characterised in that including upper strata case lid, intermediate layer control mainboard and Lower floor's bottom, is equipped with the mounting hole to match in upper strata case lid, the control mainboard in intermediate layer and lower floor's bottom, in control mainboard The boss to match with core processor is equipped with equipped with core processor, in the case lid of upper strata, boss is equipped with large area distribution Heat bulge, heat bulge are fitted closely with core processor；Upper strata case lid and lower floor's bottom inner surface are covered with electromagnetic shielding material The bed of material.
- 2. cabinet according to claim 1, it is characterised in that the electromagnetic shielding material layer is based on composite wave-suction material, should Composite wave-suction material is using epoxy resin as substrate, and with thermal expansion graphene, carbon fiber, carbonyl iron dust, nickel-copper ferrite is compound receives Rice material is filler, is made by vacuum defoamation paddling process, and uniform filling is distributed in the substrate.
- 3. cabinet according to claim 2, it is characterised in that the composite wave-suction material preparation process is as follows：A) thermal expansion graphene, is prepared：Graphene oxide is prepared, then, powdered graphene oxide is placed on stainless steel box In, which is placed in 56s in 1100 DEG C of Muffle furnace, further takes out and is cooled to room temperature, obtains thermal expansion graphene；B) nickel-copper ferrite composite nano materials, are prepared：Configure molar ratio 2:2:1:1 CuSO4·5H2O、NiSO4·7H2O、 FeCl3·6H2O、Fe SO4·6H2The aqueous solution 100ml of O, magnetic agitation 1h, is then slowly added to NaOH aqueous solutions, until mixed Close solution pH value reach 11.4, then mixed solution is poured into reaction kettle, 6h is kept at 180 DEG C, by product spend from Sub- water and ethanol eccentric cleaning, polyaniline/nickel-copper ferrite composite nano materials are obtained after dry；C) composite wave-suction material, is prepared：Take thermal expansion graphene, carbon fiber, carbonyl iron dust, nickel-copper ferrite composite Nano material Material, epoxy resin, methyl hexahydrophthalic anhydride, DMP30, are added in Centrifuge Cup, and Centrifuge Cup then is placed in planetary vacuum stirring Deaeration machine, traditional vacuum stirring deaeration 15min, Centrifuge Cup is taken out, then pours into mixture in Centrifuge Cup in mould, will Mould is placed in baking oven, and 80 DEG C of curing 6h, 100 DEG C of curing 4h, 130 DEG C of curing 2h, after mould is cooled to room temperature, sample is taken Go out to be cut to suitable dimension, up to the broadband composite wave-suction material.
- 4. cabinet according to claim 3, it is characterised in that in the composite wave-suction material, thermal expansion graphene, carbon are fine It is respectively 2wt%, 7wt% to tie up as conductive filler, content, and carbonyl iron dust, nickel-copper ferrite composite nano materials are magnetic fillers, Content is respectively 4wt%, 11wt%.
- 5. cabinet according to claim 3, it is characterised in that the length of the carbon fiber is 400 μm, a diameter of 20 μm.
- 6. cabinet according to claim 3, it is characterised in that the carbonyl iron dust is spherical for 10 μm of particle diameter.
- 7. cabinet according to claim 1, it is characterised in that set between the heat bulge 12 and core processor 21 Heat conduction silicone.
- 8. cabinet according to claim 1, it is characterised in that the upper strata case lid is made of aluminium alloy.
- 9. cabinet according to claim 1, it is characterised in that lower floor's bottom is made of aluminium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298649.6A CN107995831A (en) | 2017-12-08 | 2017-12-08 | A kind of mute central control machine case of smart home |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298649.6A CN107995831A (en) | 2017-12-08 | 2017-12-08 | A kind of mute central control machine case of smart home |
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| Publication Number | Publication Date |
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| CN107995831A true CN107995831A (en) | 2018-05-04 |
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| CN201711298649.6A Pending CN107995831A (en) | 2017-12-08 | 2017-12-08 | A kind of mute central control machine case of smart home |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109077747A (en) * | 2018-06-15 | 2018-12-25 | 深圳先进技术研究院 | Pet detector cabinet and pet detector |
| CN109346269A (en) * | 2018-10-18 | 2019-02-15 | 广州源贸易有限公司 | Transformer box used for railway communication signals |
| CN109379876A (en) * | 2018-10-18 | 2019-02-22 | 广州益牛科技有限公司 | The mute central control machine case of smart home |
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