CN108874075B - Host case capable of dissipating heat - Google Patents
Host case capable of dissipating heat Download PDFInfo
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- CN108874075B CN108874075B CN201810791055.7A CN201810791055A CN108874075B CN 108874075 B CN108874075 B CN 108874075B CN 201810791055 A CN201810791055 A CN 201810791055A CN 108874075 B CN108874075 B CN 108874075B
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- side wall
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/181—Enclosures
- G06F1/182—Enclosures with special features, e.g. for use in industrial environments; grounding or shielding against radio frequency interference [RFI] or electromagnetical interference [EMI]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/183—Internal mounting support structures, e.g. for printed circuit boards, internal connecting means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a host case capable of charging and dispersing heat, which comprises a case body, wherein the case body is of a hollow structure, a transversely arranged substrate is arranged on the inner wall of the bottom of the case body, a main board is arranged on the side wall of the upper side of the substrate, a conical block is arranged on the side wall of the upper side of the main board, a plurality of spiral guide grooves are arranged on the side wall of the outer side of the conical block in a surrounding manner, a vent pipe is arranged at the notch of each spiral guide groove and penetrates through the side wall of the case body, transversely arranged fixed blocks are arranged on the side wall of the upper side of the conical block and are of a hollow structure, a transversely arranged separation net is arranged in each fixed block, and a double-head. According to the invention, the host case can fully and thoroughly dissipate heat in the host case, and can alarm and automatically take auxiliary heat dissipation measures when the temperature reaches a threshold value, so that the host is prevented from being crashed and stopped.
Description
Technical Field
The invention relates to the technical field of host machine cases, in particular to a host machine case capable of charging and dispersing heat.
Background
The computer case is used as a part of computer accessories, has the main functions of placing and fixing each computer, has the functions of supporting and protecting, simultaneously has larger and larger heat productivity inside along with the development of computer equipment, can lower the working efficiency of the computer and accelerate the aging speed of hardware if the case can not rapidly dissipate heat, and in addition, when the case is used under the supervision of people, the internal temperature of the case of the computer continuously rises, the heat is difficult to dissipate in time, and whether the internal temperature of the case is in a reasonable range can not be judged, so that the breakdown of a host computer can occur during operation experiments, and further the loss of data can be caused; if under the condition of no supervision, the temperature of the host computer continuously rises, and the host computer cannot be subjected to timely temperature monitoring and effective temperature control, so that the host computer is crashed and shut down, and subsequent loss and trouble which are difficult to estimate are caused.
Therefore, a host case capable of sufficiently dissipating heat is proposed to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a host case capable of dissipating heat.
In order to achieve the purpose, the invention adopts the following technical scheme:
a host machine case capable of charging and dispersing heat comprises a case body, wherein the case body is of a hollow structure, a transversely arranged substrate is arranged on the inner wall of the bottom of the case body, a main board is arranged on the side wall of the upper side of the base board, a conical block is arranged on the side wall of the upper side of the main board, a plurality of spiral guide grooves are arranged on the side wall of the outer side of the conical block in a surrounding manner, a vent pipe is arranged at the notch of each spiral guide groove, the ventilation pipe is arranged through the side wall of the box body, the side wall of the upper side of the conical block is provided with a fixed block which is transversely arranged, the fixed block is of a hollow structure, a transverse separation net is arranged in the fixed block, a double-end driving motor is arranged on the side wall of the upper side of the separation net, the double-end driving motor's one end output shaft has the first pivot of vertical setting, one side that double-end driving motor was kept away from to first pivot is connected with the induced draft fan leaf, double-end driving motor's other end output shaft has power storage device.
Preferably, the electric power storage device comprises a transversely-arranged metal coil, an output shaft at one end of the double-end driving motor is connected with a vertically-arranged second rotating shaft, one side of the metal coil is connected with the second rotating shaft, two permanent magnets with opposite polarities are symmetrically arranged on inner walls at two sides of the box body, the permanent magnets and the metal coil are positioned on the same horizontal plane, a port of the metal coil is respectively connected with a vertically-arranged long outgoing line rod and a vertically-arranged short outgoing line rod, a battery groove is formed in a side wall at one side of the box body, a storage battery is arranged in the battery groove, positive and negative wiring terminals of the storage battery are both connected with the transversely-arranged metal rods, metal sleeves are arranged on one sides of the two metal rods far away from the storage battery, the two metal sleeves are vertically arranged in parallel, and side walls of the two metal sleeves are respectively contacted, be equipped with compression switch on one side lateral wall of battery, be equipped with the support on one side inner wall of box, be equipped with the bimetallic strip of vertical setting on one side lateral wall of support, be equipped with the metal contact on one side lateral wall of bimetallic strip, and the metal contact sets up with compression switch relatively, be equipped with the mounting hole on the upside lateral wall of box, and be equipped with the alarm in the mounting hole, and alarm, bimetallic strip and battery pass through the wire electricity and connect.
Preferably, be equipped with a plurality of vents that run through the setting on the lateral wall of one side of box, rotate through the bull stick on the lateral wall of vent and be connected with the swing board, and be equipped with the magnetic stripe on the lateral wall of swing board, still be equipped with the corresponding electro-magnet of a plurality of positions and magnetic stripe in the box, and a plurality of electro-magnets pass through the wire and are connected with the battery electricity.
Preferably, the rotating rod is a torsion rotating rod.
Preferably, the cover is equipped with the installation cover shell on double-end driving motor's the outside lateral wall, and the installation cover shell is hollow structure, it inhales the sound cotton to fill with the fire prevention wave in the installation shell.
Preferably, be equipped with a plurality of vertical arrangement's inserted bar on the downside lateral wall of toper piece, be equipped with a plurality of jacks with inserted bar assorted on the upside lateral wall of mainboard.
Preferably, a dust screen is arranged on the side wall of the nozzle of the ventilation pipe.
Preferably, one end of the ventilation pipe close to the conical block is provided with an oblique notch, and the oblique notch is arranged in a high-low mode.
Compared with the prior art, the invention has the beneficial effects that: the efficient heat dissipation main machine case is provided with the fan blades and the conical blocks, and the hot air flow is guided into the ventilation pipe through the spiral guide groove to be discharged, so that the heat in the case body is sufficiently discharged, and the dust falling in the spiral guide groove is discharged along with the heat;
the wire is felt to magnetism that forms two permanent magnets through the metal coil that sets up carries out the cutting of not section, thereby produce the electromotive force, and then the electric current that will produce is stored in the battery, when the temperature sharply risees, the effect of being heated the buckling through the bimetallic strip that sets up, press compression switch, thereby make the circuit switched on, thereby the alarm sends the police dispatch newspaper, remind for the user, simultaneously the electro-magnet circular telegram back, automatically open the swinging plate, thereby make the vent opened, thereby can make inside and external environment carry out quick heat exchange, and then remove the danger alarm of quick-witted case fast.
Drawings
Fig. 1 is a schematic structural diagram of a heat-dissipating host case according to the present invention;
fig. 2 is a schematic structural diagram of a heat dissipation state of a heat-dissipating host case according to the present invention;
fig. 3 is a schematic cross-sectional view of a metal sleeve of a heat-dissipating main chassis according to the present invention;
fig. 4 is a schematic cross-sectional view of a tapered block of a heat-dissipating main chassis according to the present invention.
In the figure: the device comprises a box body 1, a permanent magnet 2, a swinging plate 3, a rotating rod 4, a ventilation opening 5, a magnetic stripe 6, an electromagnet 7, a mounting hole 8, an alarm 9, a support 10, a bimetallic strip 11, a metal contact 12, a compression switch 13, a storage battery 14, a metal rod 15, a metal sleeve 16, a metal coil 17, a first rotating shaft 18, a second rotating shaft 19, a double-head driving motor 20, a separation net 21, a fixed block 22, a suction fan blade 23, a main board 24, a base board 25, a long wire outlet rod 26, a short wire outlet rod 27, a conical block 28, a spiral guide groove 29 and a ventilation pipe 30.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-4, a main machine case capable of charging and dissipating heat comprises a case body 1, the case body 1 is of a hollow structure, a plurality of ventilation openings 5 which are arranged in a penetrating way are arranged on the side wall of one side of the case body 1, a swinging plate 3 is connected on the side wall of the ventilation openings 5 in a rotating way through a rotating rod 4, the rotating rod 4 adopts a torsion rotating rod, the automatic swinging reset can be realized under the action of the demagnetizing force of a magnetic strip 6, the magnetic strip 6 is arranged on the side wall of one side of the swinging plate 3, a plurality of electromagnets 7 corresponding to the magnetic strip 6 are also arranged in the case body 1, the electromagnets 7 are electrically connected with a storage battery 14 through wires, the electromagnets 7 can have magnetism when being powered on, the swinging plate 3 is automatically opened under the action of the magnetic force, further ventilation and heat dissipation are further carried out, the condition that the main machine is crashed, a main board 24 is arranged on the upper side wall of the base board 25, a conical block 28 is arranged on the upper side wall of the main board 24, a plurality of vertically arranged insertion rods are arranged on the lower side wall of the conical block 28, a plurality of insertion holes matched with the insertion rods are arranged on the upper side wall of the main board 24, the conical block 28 is conveniently and fixedly arranged on the main board 24, so that heat generated by the main board 24 can smoothly flow upwards, a plurality of spiral guide grooves 29 are arranged on the outer side wall of the conical block 28 in a surrounding manner, a vent pipe 30 is arranged at the notch of each spiral guide groove 29, a dust screen is arranged at the side wall of the opening of each vent pipe 30, so that impurities such as external dust and the like are prevented from entering the box body 1, an inclined notch is arranged at one end, close to the conical block 28, of each vent pipe 30 is arranged in a high-low manner, hot air and dust are more conveniently sucked into the vent pipe 20, the vent pipe, the fixing block 22 is of a hollow structure, the transverse partition net 21 is arranged in the fixing block 22, the double-end driving motor 20 is arranged on the side wall of the upper side of the partition net 21, the double-end driving motor 20 can drive two output shafts to rotate, the additional arrangement of the driving motors is avoided, certain cost is saved, an installation casing is sleeved on the side wall of the outer side of the double-end driving motor 20, the installation casing is of a hollow structure, fireproof wave sound-absorbing cotton is filled in the installation casing, noise pollution caused by the operation of the double-end driving motor 20 is reduced, one end output shaft of the double-end driving motor 20 is connected with a first rotating shaft 18 which is vertically arranged, one side of the first rotating shaft 18, far away from the double-end driving motor 20, is connected with a fan suction blade 23, the other end output shaft of the double-end driving motor 20 is connected with an electric storage device, the, one side of the metal coil 17 is connected with the second rotating shaft 19, two permanent magnets 2 with opposite polarities are symmetrically arranged on the inner walls of two sides of the box body 1, the permanent magnets 2 and the metal coil 17 are positioned on the same horizontal plane and can form a stable magnetic field, the port of the metal coil 17 is respectively connected with an extended wire rod 26 and a short wire rod 27 which are vertically arranged, the side wall of one side of the box body 1 is provided with a battery jar, a storage battery 14 is arranged in the battery jar, the positive and negative terminals of the storage battery 14 are both connected with metal rods 15 which are transversely arranged, one side of the two metal rods 15, which is far away from the storage battery 14, is provided with metal sleeves 16, the two metal sleeves 16 are vertically arranged in parallel, the side walls of the two metal sleeves 16 are respectively contacted with the side walls of the extended wire rod 26 and the short wire rod 27, the side wall of one side of the storage battery 14 is provided with a, thereby with the circuit disconnection, be equipped with support 10 on the one side inner wall of box 1, be equipped with the bimetallic strip 11 of vertical setting on the one side lateral wall of support 10, be equipped with metal contact 12 on the one side lateral wall of bimetallic strip 11, and metal contact 12 sets up with compression switch 13 relatively, be equipped with mounting hole 8 on the upside lateral wall of box 1, and be equipped with alarm 9 in the mounting hole 8, and alarm 9, bimetallic strip 11 and battery 14 pass through the wire electricity and connect, can be when carrying out the heat dissipation to box 1, under the drive through double-end driving motor 20, charge battery 14.
In the invention, under the long-time use condition of the intelligent heat-dissipation host case, a large amount of temperature is accumulated in the case body 1, the fixed block 22 is arranged on the upper side of the main board 24, the air suction fan blades 23 continuously suck air into the case body 1 through the control of the double-head driving motor 20, so that the sucked and flowing hot air flows dynamically along with the arrangement of the spiral guide grooves 29, the upper side of the main board 24 is covered by the tapered block 28, the falling dust falls on the side walls of the spiral guide grooves 29, and the sucked hot air flows into the ventilation pipe 30 through the spiral guide grooves 29, so that a large amount of heat in the case body 1 can be discharged, meanwhile, the double-head driving motor 20 drives the second rotating shaft 19 to rotate, so that the metal coil 17 continuously rotates, due to the arrangement of the permanent magnets 2 on the inner walls on the two sides of the case body 1, when the metal coil 17 rotates, the magnetic induction lines are continuously cut, so that induced electromotive force is generated, further current is generated, the long outgoing line rod 26 and the short outgoing line rod 27 in the metal coil 17 are respectively in contact rotation with the side walls of the two metal sleeves 16, the current is continuously transmitted into the storage battery 14 through the metal rod 15, so that the storage battery 14 is charged, but the box body 1 is wholly in a closed state, and under the long-time use of the box body, the heat is dissipated only through the suction fan blades 23, so that the effective and thorough heat dissipation of the interior of the box body cannot be achieved;
when the temperature in the box body 1 reaches a threshold value, the bimetallic strip 11 (in a heated state, the bimetallic strip has a bending characteristic due to the physical property of the bimetallic strip) is continuously bent under the action of high temperature, so that the metal contact 12 extrudes the compression switch 13, a circuit is conducted, and the alarm 9 gives an alarm to remind a user that the temperature in the box body 1 is at the limit threshold value and needs to be stopped to protect the box body; meanwhile, 7 circular telegram magnetizations of electro-magnet, thereby it is the same with magnetism 6 to have magnetism (magnetism is taken with magnetic stripe), because under the effect that like poles repel each other, make magnetic stripe 6 promote by the repulsion, and then make swinging plate 3 take place the swing, thereby make a plurality of vents 5 opened in the box 1, thereby make the heat in the box 1 inside can carry out quick heat exchange with the external world, through the effect of this automatic supplementary heat dissipation measure cooperation suction fan leaf 23, thereby reach abundant radiating effect, when the inside temperature in the box 1 descends, make bimetallic strip 11 buckle back, compression switch 13 resets, thereby the circuit is broken off, thereby electro-magnet 7 loses magnetism, then swinging plate 3 is under the torsion effect of bull stick 4, close vent 5 again.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The host case capable of dissipating heat in a charging manner comprises a case body (1) and is characterized in that the case body (1) is of a hollow structure, a base plate (25) transversely arranged is arranged on the inner wall of the bottom of the case body (1), a main plate (24) is arranged on the side wall of the upper side of the base plate (25), a conical block (28) is arranged on the side wall of the upper side of the main plate (24), a plurality of spiral guide grooves (29) are arranged on the side wall of the outer side of the conical block (28) in an encircling manner, a vent pipe (30) is arranged at the notch of each spiral guide groove (29), the vent pipe (30) penetrates through the side wall of the case body (1) and is arranged, a transversely arranged fixed block (22) is arranged on the side wall of the upper side of the conical block (28), the fixed block (22) is of a hollow structure, a transverse separation net (21) is arranged in the fixed block, an output shaft at one end of the double-head driving motor (20) is connected with a first rotating shaft (18) which is vertically arranged, one side, far away from the double-head driving motor (20), of the first rotating shaft (18) is connected with a suction fan blade (23), and an output shaft at the other end of the double-head driving motor (20) is connected with an electric storage device;
the electric power storage device comprises a transversely-arranged metal coil (17), one end output shaft of the double-end driving motor (20) is connected with a second rotating shaft (19) of a vertical arrangement, one side of the metal coil (17) is connected with the second rotating shaft (19), two permanent magnets (2) with opposite polarities are symmetrically arranged on inner walls of two sides of the box body (1), the permanent magnets (2) and the metal coil (17) are located on the same horizontal plane, a long outgoing line rod (26) and a short outgoing line rod (27) of the vertical arrangement are respectively connected with a port of the metal coil (17), a battery groove is formed in one side wall of the box body (1), a storage battery (14) is arranged in the battery groove, positive and negative wiring ends of the storage battery (14) are respectively connected with the transversely-arranged metal rods (15), and one side, away from the storage battery (14), of the metal rods (15) is provided with a metal, and two metal sleeve (16) are parallel arrangement from top to bottom, two the lateral wall of metal sleeve (16) contacts with the lateral wall of long play line pole (26) and short play line pole (27) respectively, be equipped with compression switch (13) on one side lateral wall of battery (14), be equipped with on one side inner wall of box (1) support (10), be equipped with bimetallic strip (11) of vertical setting on one side lateral wall of support (10), be equipped with metal contact (12) on one side lateral wall of bimetallic strip (11), and metal contact (12) set up with compression switch (13) relatively, be equipped with mounting hole (8) on the upside lateral wall of box (1), and be equipped with alarm (9) in mounting hole (8), and alarm (9), bimetallic strip (11) and battery (14) are connected through the wire electricity.
2. A rechargeable and heat-dispersible host computer cabinet according to claim 1, characterized in that a plurality of ventilation openings (5) are arranged on one side wall of the cabinet (1), the side wall of the ventilation openings (5) is rotatably connected with a swing plate (3) through a rotating rod (4), a magnetic strip (6) is arranged on one side wall of the swing plate (3), a plurality of electromagnets (7) corresponding to the magnetic strip (6) are arranged in the cabinet (1), and the electromagnets (7) are electrically connected with the storage battery (14) through wires.
3. A rechargeable heat-dissipating main unit casing according to claim 2, wherein the rotating rod (4) is a torsion rotating rod.
4. The main machine cabinet capable of charging and dissipating heat as claimed in claim 1, wherein an installation casing is sleeved on an outer side wall of the double-headed driving motor (20), the installation casing is a hollow structure, and fireproof wave sound-absorbing cotton is filled in the installation casing.
5. A rechargeable and heat-dispersible host computer case as claimed in claim 1, characterized in that the lower side wall of the conical block (28) is provided with a plurality of vertically arranged plug rods, and the upper side wall of the main board (24) is provided with a plurality of plug holes matching with the plug rods.
6. A rechargeable and heat-dispersible mainframe box according to claim 1, characterised in that the side wall of the nozzle of the ventilation pipe (30) is provided with a dust screen.
7. A heat-chargeable and dispersable host casing according to claim 1, wherein the end of the ventilation pipe (30) near the conical block (28) is provided with a bevel-shaped cut-out, and the bevel-shaped cut-out is arranged in a high-low manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810791055.7A CN108874075B (en) | 2018-07-18 | 2018-07-18 | Host case capable of dissipating heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810791055.7A CN108874075B (en) | 2018-07-18 | 2018-07-18 | Host case capable of dissipating heat |
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| Publication Number | Publication Date |
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| CN108874075A CN108874075A (en) | 2018-11-23 |
| CN108874075B true CN108874075B (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810791055.7A Active CN108874075B (en) | 2018-07-18 | 2018-07-18 | Host case capable of dissipating heat |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110134202B (en) * | 2019-05-09 | 2023-01-13 | 宿州学院 | Computer artificial intelligent information filtering system |
| CN111552357A (en) * | 2020-05-07 | 2020-08-18 | 杭州乖如科技有限公司 | Computer machine case based on hot bimetal radiator fan self-starting |
| CN111986577A (en) * | 2020-09-05 | 2020-11-24 | 许达 | Flexible OLED screen |
| CN113572068B (en) * | 2021-09-24 | 2021-12-14 | 山东泰恒智能环境科技有限公司 | Electric automation equipment has block terminal of heat dissipation function |
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| CN204630001U (en) * | 2015-05-12 | 2015-09-09 | 苏州瓷气时代净化设备有限公司 | A kind of air purifier helical wind-guiding base assembly |
| CN105491828A (en) * | 2015-12-04 | 2016-04-13 | 北京遥测技术研究所 | Novel machine case with anti-theft alarm function |
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| CN107562160A (en) * | 2017-10-23 | 2018-01-09 | 成都乐也科技有限公司 | A kind of rapid heat radiation device of computer hardware |
| CN107992168A (en) * | 2017-12-11 | 2018-05-04 | 重庆电子工程职业学院 | A kind of computer cabinet easy to radiate with drifting dust |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0816721D0 (en) * | 2008-09-13 | 2008-10-22 | Daniel Simon R | Systems,devices and methods for electricity provision,usage monitoring,analysis and enabling improvements in efficiency |
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- 2018-07-18 CN CN201810791055.7A patent/CN108874075B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204630001U (en) * | 2015-05-12 | 2015-09-09 | 苏州瓷气时代净化设备有限公司 | A kind of air purifier helical wind-guiding base assembly |
| CN105491828A (en) * | 2015-12-04 | 2016-04-13 | 北京遥测技术研究所 | Novel machine case with anti-theft alarm function |
| CN206386769U (en) * | 2016-12-30 | 2017-08-08 | 广州市浩洋电子股份有限公司 | Helical wind-guiding device and the stage lighting cooling system provided with the helical wind-guiding device |
| CN107562160A (en) * | 2017-10-23 | 2018-01-09 | 成都乐也科技有限公司 | A kind of rapid heat radiation device of computer hardware |
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| CN108874075A (en) | 2018-11-23 |
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Effective date of registration: 20210414 Address after: No. 3, Shunjing Road, Songgang Songxia Industrial Park, Shishan town, Nanhai District, Foshan City, Guangdong Province Applicant after: Foshan mansentian metal products Co.,Ltd. Address before: 475000 No.85, Minglun street, Shunhe Hui District, Kaifeng City, Henan Province Applicant before: Wen Liqin |
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