CN111240435B - Computer case and computer - Google Patents
Computer case and computer Download PDFInfo
- Publication number
- CN111240435B CN111240435B CN202010251593.4A CN202010251593A CN111240435B CN 111240435 B CN111240435 B CN 111240435B CN 202010251593 A CN202010251593 A CN 202010251593A CN 111240435 B CN111240435 B CN 111240435B
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- cylindrical block
- side plate
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- shaped metal
- computer case
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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
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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
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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)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a computer case, which comprises a panel, a tail plate, a top plate, a bottom plate and two side plates, wherein the two side plates are respectively provided with a cooling heat-conducting assembly, and the cooling heat-conducting assembly comprises: the square plate is buckled on the inner wall of the side plate and is in sealed connection with the inner wall of the side plate to form a water tank; the inner part of the cylindrical block body is hollow and is attached to the outer wall of the water tank facing the center of the computer case, a plurality of vertical C-shaped metal pipes are connected between the outer wall of the upper half circumference and the outer wall of the lower half circumference of the cylindrical block body, and two ends of each C-shaped metal pipe are communicated with the hollow part of the cylindrical block body; the end face, facing the center of the computer case, of the cylindrical block body close to the side plate on one side is provided with an axial flow fan, and the end face, facing the center of the computer case, of the cylindrical block body close to the side plate on the other side is provided with a centrifugal fan. The invention not only can effectively reduce the temperature in the case, but also can avoid the fan noise leakage, and simultaneously can reduce the ash layer entering the case.
Description
Technical Field
The present invention relates to the field of computers. More particularly, the present invention relates to a computer case and a computer.
Background
The computer case mainly functions to place and fix various hardware of the computer and shield electromagnetic radiation generated by the operation of the computer. The hardware inside the machine case can generate a large amount of heat during working, a heat dissipation fan is simply arranged on a processor element and cannot meet the heat dissipation requirement, in order to ensure the normal work of a computer, the heat inside the machine case is dissipated, the common method for solving the problem in the industry is to arrange vent holes on a machine case panel and a tail plate, a fan is arranged behind the vent holes in the machine case, after the fan runs, air is sucked in through the vent holes in the panel and is exhausted through the vent holes in the tail plate, flowing air flow is formed in the machine case, and therefore the machine case has the functions of ventilation and heat dissipation. However, the whole structure of the case is closed, and the power of the fan is low, so that the heat dissipation performance of the case is general, meanwhile, noise generated by the fan can also leak from the vent hole, and the dust layer is easy to enter the case from the vent hole.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
It is still another object of the present invention to provide a computer case which not only effectively reduces the temperature inside the case, but also prevents the fan noise from leaking, and also reduces the dust layer entering the case.
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, there is provided a computer case including a front panel, a rear panel, a top panel, a bottom panel, and two side panels, each of the two side panels having a cooling heat-conducting assembly disposed thereon, the cooling heat-conducting assembly including:
the square plate is buckled on the inner wall of the side plate and is in sealed connection with the inner wall of the side plate to form a water tank, two through holes communicated with the inside of the water tank are formed in the side plate, and a pipe joint is arranged outside each through hole in the outer wall of the side plate and is used for connecting a water inlet pipe or a water outlet pipe;
the inner part of the cylindrical block is hollow, the outer diameter of the cylindrical block is smaller than the side length of the square disc, the cylindrical block is coaxially attached to the outer wall, facing the center of the computer case, of the water tank, a plurality of vertical C-shaped metal pipes are connected between the outer wall of the upper half circumference and the outer wall of the lower half circumference of the cylindrical block, the plurality of vertical C-shaped metal pipes are uniformly arranged in front of the cylindrical block at intervals from left to right to form a fence, the pipeline inside each C-shaped metal pipe is a capillary pipeline, and two ends of each C-shaped metal pipe are communicated with the hollow part of the cylindrical block;
the air pressure of 9kpa is arranged in the hollow part of the cylindrical block close to the side plate on one side and the plurality of C-shaped metal pipes connected with the cylindrical block, half of the hollow part of the cylindrical block close to the side plate on one side is filled with water, an axial flow fan is arranged on the end face, facing the center of a computer case, of the cylindrical block close to the side plate on one side, the axial flow fan is positioned in a fence in front of the cylindrical block where the axial flow fan is positioned, the air outlet face of the axial flow fan faces the center of the computer case, a first cylinder is coaxially arranged on the periphery of the cylindrical block close to the side plate on one side, the first cylinder is connected to the outer wall of a water tank where the cylindrical block close to the side plate on one side is positioned, and the axial flow fan is also positioned in the first cylinder;
the air pressure of the inner part of the C-shaped metal pipe connected with the cylindrical block and the hollow part of the cylindrical block close to the side plate on the other side is 19kpa, half of the hollow part of the cylindrical block close to the side plate on the other side is filled with water, a centrifugal fan is arranged on the end face, facing the center of a computer case, of the cylindrical block close to the side plate on the other side, the centrifugal fan is arranged in a fence in front of the cylindrical block where the centrifugal fan is located, the air inlet face of the centrifugal fan faces the center of the computer case, a second cylinder is coaxially arranged on the periphery of the cylindrical block close to the side plate on the other side, the second cylinder is connected to the outer wall of a water tank where the cylindrical block close to the side plate on the other side is located, and the centrifugal fan is also arranged in the second cylinder;
the top of the first cylinder is provided with an air inlet along the horizontal tangential direction, the top of the second cylinder is provided with an air outlet along the horizontal tangential direction, and the air inlet and the air outlet are communicated through an air circulation pipeline fixed on the top plate.
Preferably, the square disc, the cylindrical block and the C-shaped metal tube are made of aluminum.
Preferably, the cylindrical block body is provided with a plurality of hemispherical convex parts and a plurality of hemispherical concave parts at regular intervals on the inner wall close to the water tank.
Preferably, an inner wall of the air circulation duct is provided with a heat insulating material.
Preferably, the area of the outer wall of the water tank facing the center of the computer case, which is not attached with the cylindrical block body, is covered with a sound attenuation material.
Preferably, a heat absorption fin is connected between two adjacent C-shaped metal tubes and is horizontally arranged.
The invention also provides a computer using the computer case.
The invention at least comprises the following beneficial effects: the invention uses the hollow cylindrical block body filled with water, the C-shaped metal tube with a capillary pipeline and the water tank filled with cooling water, the lower end of the C-shaped metal tube absorbs the water in the cylindrical block body through the capillary action, the heat conduction of the C-shaped metal tube ensures that the water in the capillary channel is evaporated and quickly absorbed, the water vapor enters the cylindrical block body again from the upper end of the C-shaped metal tube, and the cylindrical block body is tightly attached to the water tank, so the water vapor is condensed and radiated on the inner wall of the cylindrical block body close to the water tank to form water drops, the heat in the air in the case can be quickly transferred to the water in the water tank, the axial flow fan is arranged on one side in the case, the centrifugal fan is arranged on the other side, the centrifugal fan sucks the hot air generated after the elements in the case are heated, and the C-shaped metal tube on one side of the centrifugal fan absorbs the heat in the air to carry out the first temperature reduction on the air in the suction process, meanwhile, the air after being cooled for the first time is delivered to the axial flow fan through the air circulation pipeline by the centrifugal fan, the C-shaped metal pipe on one side of the axial flow fan absorbs heat again to cool the air for the second time, the air after being cooled for the second time is blown to the heating element in the case through the axial flow fan, the air circulates in the case without being provided with an air vent, and therefore noise generated by the fan can be prevented from being leaked and entering an ash layer from the air vent.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic front view of an inside of a chassis according to an embodiment of the present invention;
FIG. 2 is a schematic view of the inside of the case of the present invention viewed from the direction A-A;
fig. 3 is a schematic structural diagram of the inside of the chassis as viewed from the direction B-B according to an embodiment of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 3, the present invention provides a computer case, which includes a panel, a tail plate, a top plate 1, a bottom plate 2 and two side plates 3, wherein a computer main board is inserted on the tail plate and located in a central region of the computer case, the two side plates 3 are both provided with a cooling heat conduction assembly, and the cooling heat conduction assembly includes:
the square plate 4 is buckled on the inner wall of the side plate 3 and is connected with the inner wall of the side plate 3 in a sealing mode to form a water tank 5, the edge of the square plate 4 can be welded on the inner wall of the side plate 3, two through holes communicated with the inside of the water tank 5 are formed in the side plate 3, a pipe joint 6 is arranged outside each through hole in the outer wall of the side plate 3 and is used for being connected with a water inlet pipe or a water outlet pipe, the other water inlet pipe of the two pipe joints 6 is connected with a water outlet pipe, cooling water is introduced into the water tank 5 through the water inlet pipe, and water in the water tank 5 is discharged through the water outlet pipe. In order to save water, a water pump and a cooling unit can be connected in series between the water inlet pipe and the water outlet pipe in sequence to recycle cooling water, which is not described in detail for the prior art;
the inner part of the cylindrical block 7 is hollow, the outer diameter of the cylindrical block 7 is smaller than the side length of the square disc 4, the cylindrical block 7 is coaxially attached to the outer wall, facing the center of the computer case, of the water tank 5, a plurality of vertical C-shaped metal pipes 8 are connected between the outer wall of the upper half circumference and the outer wall of the lower half circumference of the cylindrical block 7, the plurality of C-shaped metal pipes 8 are uniformly arranged in front of the cylindrical block 7 at intervals from left to right to form a fence, the inner pipeline of each C-shaped metal pipe 8 is a capillary pipeline, and two ends of each C-shaped metal pipe 8 are communicated with the hollow part of the cylindrical block 7;
wherein, the air pressure is 9kpa is arranged in the hollow part of the cylindrical block 7 close to the side plate 3 on one side and the plurality of C-shaped metal pipes 8 connected with the cylindrical block 7, and the hollow part of the cylindrical block 7 near the side plate 3 is half filled with water, here since the C-shaped metal pipe 8 is communicated with the hollow part of the cylindrical block 7, the water filled in the hollow portion of the cylindrical block 7 can be drawn into its capillary channel by the C-shaped metal tube 8 by capillary action, the air pressure inside the hollow part of the cylindrical block 7 and the plurality of C-shaped metal pipes 8 connected with the cylindrical block 7 is 9kpa, under the air pressure, the boiling point of water is about 40 ℃, and the C-shaped metal pipe 8 is easy to evaporate the water in the capillary pipeline after heat transfer and heat conduction, thereby absorbing heat, and obtaining cooling treatment after the heat in the air is conducted out.
An axial flow fan 9 is arranged on the end face, facing the center of the computer case, of the cylindrical block 7 close to the side plate 3, the axial flow fan 9 is located in a rail in front of the cylindrical block 7 where the axial flow fan 9 is located, the air outlet face of the axial flow fan 9 faces the center of the computer case, a first cylinder 10 is coaxially arranged on the periphery of the cylindrical block 7 close to the side plate 3, the first cylinder 10 is connected to the outer wall of the water tank 5 where the cylindrical block 7 close to the side plate 3 is located, the axial flow fan 9 is also located in the first cylinder 10, and the axial flow fan 9 is used for blowing air, which absorbs heat and is cooled, of the C-shaped metal pipe 8 on the cylindrical block 7 close to the side plate 3 to the main board and other parts of the central area of the computer case;
wherein, the hollow part of the cylindrical block 7 near the other side plate 3 and the plurality of C-shaped metal pipes 8 connected with the cylindrical block 7 are provided with air pressure of 19kpa, and half of the hollow part of the cylindrical block 7 near the other side plate 3 is filled with water, and the difference here is that the boiling point of water is about 60 ℃ under the air pressure of 19kpa, as in the previous case.
The end face, facing the center of the computer case, of the cylindrical block 7 close to the side plate 3 on the other side is provided with a centrifugal fan 11, the centrifugal fan 11 is located in a rail in front of the cylindrical block 7 where the centrifugal fan 11 is located, the air inlet face of the centrifugal fan 11 faces the center of the computer case, a second cylinder 12 is coaxially arranged on the periphery of the cylindrical block 7 close to the side plate 3 on the other side, the second cylinder 12 is connected to the outer wall of the water tank 5 where the cylindrical block 7 close to the side plate 3 on the other side is located, the centrifugal fan 11 is also located in the second cylinder 12, and the centrifugal fan 11 is used for sucking hot air generated in the center area of the computer case, so that the hot air can heat and evaporate moisture in the C-shaped metal pipe 8 on the cylindrical block 7 close to the side plate 3 on the other side, and the hot air can cool itself after transferring heat out;
wherein, first drum 10 top is provided with air intake 14 along horizontal tangential direction, second drum 12 top is provided with air outlet 13 along horizontal tangential direction, air intake 14 with air outlet 13 intercommunication through one be fixed in roof 1 overhead air circulation pipeline 15 within a definite time, here air outlet 13 just in time can inhale centrifugal fan 11 again through the first cooling air that is close to the C shape tubular metal resonator 8 processing on the cylindric block 7 of opposite side curb plate 3 and send out, and first cooling air flows to axial fan 9 department along air circulation pipeline 15, carries out the second cooling again and handles. Since the axial flow fan 9 sucks in the air which has been subjected to the cooling process, in order to further absorb the heat in the air, the air pressure in the cooling heat-conducting component on one side is set to be lower, while the air sucked by the centrifugal fan 11 is just the hot air generated in the central area of the computer case, so the air pressure in the cooling heat-conducting component on the other side is set to be slightly higher.
In the use process of the embodiment, the cylindrical block 7 for containing water in a hollow manner, the C-shaped metal pipe 8 with a capillary pipeline and the water tank 5 filled with cooling water are arranged, the lower end of the C-shaped metal pipe 8 absorbs water in the cylindrical block 7 through the capillary action, then the water in the capillary channel is evaporated and quickly absorbed through the heat conduction of the C-shaped metal pipe 8, water vapor enters the cylindrical block 7 again from the upper end of the C-shaped metal pipe 8 and is tightly attached to the water tank 5, so that the water vapor is condensed and radiated on the inner wall, close to the water tank 5, of the cylindrical block 7 to form water drops, the heat in the air in the case can be quickly transferred to the water in the water tank 5, the axial flow fan 9 is arranged on one side in the case, the centrifugal fan 11 is arranged on the other side of the case, the centrifugal fan 11 sucks in the hot air generated after elements in the case are heated, and the C-shaped metal pipe 8 on one side of the centrifugal fan 11 absorbs the heat in the air to cool the air for the first time in the sucking process, meanwhile, the air after being cooled for the first time is sent to the axial flow fan 9 through the air circulation pipeline 15 by the centrifugal fan 11, the C-shaped metal pipe 8 on one side of the axial flow fan 9 absorbs heat again to cool the air for the second time, the air after being cooled for the second time is blown to the heating element in the case through the axial flow fan 9, the air circulates in the case without being provided with air holes, and therefore noise generated by the fan can be prevented from being leaked and entering an ash layer from the air holes.
In another embodiment, the square plate 4, the cylindrical block 7 and the C-shaped metal tube 8 are made of aluminum, because aluminum has a high thermal conductivity and a high thermal conductivity, and is not easy to accumulate heat.
In another embodiment, a plurality of hemispherical protrusions and hemispherical recesses are uniformly spaced on the inner wall of the cylindrical block 7 close to the water tank 5, so that the area of the inner wall of the cylindrical block 7 can be increased, and the condensation of water vapor in the C-shaped metal pipe 8 on the inner wall of the cylindrical block 7 can be accelerated.
In another embodiment, the inner wall of the air circulation duct 15 is provided with a heat insulating material, which may be rock wool or aerogel blanket, so that the air in the air circulation duct 15 is prevented from absorbing heat on the top plate 1.
In another embodiment, the area of the outer wall of the water tank 5 facing the center of the computer case, which is outside the cylindrical block 7, is covered with a sound-absorbing material, so that the noise generated by the fan can be further absorbed.
In another embodiment, a heat absorbing fin is connected between two adjacent C-shaped metal tubes 8, and the heat absorbing fin is horizontally arranged, so that the heat absorbing fin does not obstruct the horizontal flow of air, and can quickly transfer the heat in the air to the C-shaped metal tubes 8.
The invention also provides a computer using the computer case.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (5)
1. Computer machine case, it includes panel, tailboard, roof, bottom plate and both sides board, its characterized in that:
all be provided with cooling heat-conducting component on the both sides board, cooling heat-conducting component includes:
the square plate is buckled on the inner wall of the side plate and is in sealed connection with the inner wall of the side plate to form a water tank, two through holes communicated with the inside of the water tank are formed in the side plate, and a pipe joint is arranged outside each through hole in the outer wall of the side plate and is used for connecting a water inlet pipe or a water outlet pipe;
the inner part of the cylindrical block is hollow, the outer diameter of the cylindrical block is smaller than the side length of any one side of the square disc, the cylindrical block is coaxially attached to the outer wall, facing the center of the computer case, of the water tank, a plurality of vertical C-shaped metal pipes are connected between the outer wall of the upper half circumference and the outer wall of the lower half circumference of the cylindrical block, the plurality of vertical C-shaped metal pipes are uniformly arranged in front of the cylindrical block at intervals from left to right to form a fence, the inner pipeline of each C-shaped metal pipe is a capillary pipeline, and two ends of each C-shaped metal pipe are communicated with the hollow part of the cylindrical block;
the air pressure of 9kpa is arranged in the hollow part of the cylindrical block close to the side plate on one side and the plurality of C-shaped metal pipes connected with the cylindrical block, half of the hollow part of the cylindrical block close to the side plate on one side is filled with water, an axial flow fan is arranged on the end face, facing the center of a computer case, of the cylindrical block close to the side plate on one side, the axial flow fan is positioned in a fence in front of the cylindrical block where the axial flow fan is positioned, the air outlet face of the axial flow fan faces the center of the computer case, a first cylinder is coaxially arranged on the periphery of the cylindrical block close to the side plate on one side, the first cylinder is connected to the outer wall of a water tank where the cylindrical block close to the side plate on one side is positioned, and the axial flow fan is also positioned in the first cylinder;
the air pressure of the inner part of the C-shaped metal pipe connected with the cylindrical block and the hollow part of the cylindrical block close to the side plate on the other side is 19kpa, half of the hollow part of the cylindrical block close to the side plate on the other side is filled with water, a centrifugal fan is arranged on the end face, facing the center of a computer case, of the cylindrical block close to the side plate on the other side, the centrifugal fan is arranged in a fence in front of the cylindrical block where the centrifugal fan is located, the air inlet face of the centrifugal fan faces the center of the computer case, a second cylinder is coaxially arranged on the periphery of the cylindrical block close to the side plate on the other side, the second cylinder is connected to the outer wall of a water tank where the cylindrical block close to the side plate on the other side is located, and the centrifugal fan is also arranged in the second cylinder;
the top of the first cylinder is provided with an air inlet along the horizontal tangential direction, the top of the second cylinder is provided with an air outlet along the horizontal tangential direction, and the air inlet and the air outlet are communicated through an air circulation pipeline fixed on the top plate;
a plurality of hemispherical convex parts and a plurality of hemispherical concave parts are uniformly arranged on the inner wall of the cylindrical block body close to the water tank at intervals;
and the inner wall of the air circulation pipeline is provided with a heat insulating material.
2. The computer case of claim 1, wherein the square plates, cylindrical blocks, and C-shaped metal tubes are aluminum.
3. The computer case of claim 1, wherein the outer wall of the water tank facing the center of the computer case is coated with a sound-deadening material except for the area where the cylindrical block is attached.
4. The computer case of claim 1, wherein heat absorbing fins are connected between two adjacent C-shaped metal tubes, and the heat absorbing fins are horizontally arranged.
5. A computer comprising the computer case of any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010251593.4A CN111240435B (en) | 2020-04-01 | 2020-04-01 | Computer case and computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010251593.4A CN111240435B (en) | 2020-04-01 | 2020-04-01 | Computer case and computer |
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| Publication Number | Publication Date |
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| CN111240435A CN111240435A (en) | 2020-06-05 |
| CN111240435B true CN111240435B (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010251593.4A Active CN111240435B (en) | 2020-04-01 | 2020-04-01 | Computer case and computer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103477299A (en) * | 2011-02-07 | 2013-12-25 | 戴尔产品有限公司 | System and method for a modular fluid handling system with modes in a modular data center |
| CN206235192U (en) * | 2016-01-30 | 2017-06-09 | 边疆 | A kind of integral heat radiator |
| CN107390806A (en) * | 2017-07-11 | 2017-11-24 | 侯添有 | A kind of closed capillary cooling cabinet |
| CN209231838U (en) * | 2019-01-30 | 2019-08-09 | 运城学院 | A kind of computer cabinet of high efficiency and heat radiation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100909544B1 (en) * | 2001-03-02 | 2009-07-27 | 산요덴키가부시키가이샤 | Electronic device |
| CN107390808A (en) * | 2017-07-11 | 2017-11-24 | 合肥柴阁信息科技有限公司 | A kind of intelligent fast cooling device of computer cabinet |
-
2020
- 2020-04-01 CN CN202010251593.4A patent/CN111240435B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103477299A (en) * | 2011-02-07 | 2013-12-25 | 戴尔产品有限公司 | System and method for a modular fluid handling system with modes in a modular data center |
| CN206235192U (en) * | 2016-01-30 | 2017-06-09 | 边疆 | A kind of integral heat radiator |
| CN107390806A (en) * | 2017-07-11 | 2017-11-24 | 侯添有 | A kind of closed capillary cooling cabinet |
| CN209231838U (en) * | 2019-01-30 | 2019-08-09 | 运城学院 | A kind of computer cabinet of high efficiency and heat radiation |
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| CN111240435A (en) | 2020-06-05 |
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