CN108665913B - Hard disk video recorder - Google Patents
Hard disk video recorder Download PDFInfo
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- CN108665913B CN108665913B CN201810299858.0A CN201810299858A CN108665913B CN 108665913 B CN108665913 B CN 108665913B CN 201810299858 A CN201810299858 A CN 201810299858A CN 108665913 B CN108665913 B CN 108665913B
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- hard disk
- disk array
- air
- fan
- air guide
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
- G11B33/125—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules the apparatus comprising a plurality of recording/reproducing devices, e.g. modular arrangements, arrays of disc drives
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
- G11B33/1406—Reducing the influence of the temperature
- G11B33/1413—Reducing the influence of the temperature by fluid cooling
- G11B33/142—Reducing the influence of the temperature by fluid cooling by air cooling
Abstract
The invention relates to the technical field of video recorders, and discloses a hard disk video recorder which comprises a case, a first air guide component, a hard disk array and a system fan, wherein the first air guide component is arranged in the case to divide the case into a hard disk array installation space for installing the hard disk array and a system fan installation space for installing the system fan; along the extending direction of the first air guide assembly, the first end of the first air guide assembly is in sealing fit with one side plate of the case, and the second end of the first air guide assembly is matched with the case to form a ventilation opening for communicating the hard disk array installation space with the system fan installation space; in the case, a side plate connected with a first end of the first air guide assembly is provided with a first air inlet communicated with the hard disk array mounting space and a first air outlet communicated with the system fan mounting space; the system fan comprises a first fan arranged at the first air outlet; the hard disk video recorder effectively solves the problems of poor heat dissipation, uneven heat dissipation and the like of a hard disk array.
Description
Technical Field
The invention relates to the technical field of video recorders, in particular to a hard disk video recorder.
Background
With the rapid development of informatization and mobile internet, the storage requirements of users on hard disk video recorders are increasing, and the usage amount of multi-disk hard disk video recorders such as 1.5U, 2U and the like is increasing. The concentrated placement of a large number of magnetic disks in the case can generate more heat, and if the heat cannot be dissipated in time, the reliability of the hard disk is greatly influenced. The heat dissipation scheme which simply depends on increasing the rotating speed of the fan inevitably brings the disadvantages of noise increase and the like, so that how to design a reasonable heat dissipation air channel in the case, and therefore, the fact that the whole case system has a better flow field is ensured to become an important guarantee for safe and reliable work of the hard disk video recorder.
Disclosure of Invention
The invention provides a hard disk video recorder which effectively solves the problems of poor and uneven heat dissipation of a hard disk of a multi-disk hard disk video recorder.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a digital video recorder, includes quick-witted case, first air guide component, hard disk array, system's fan, wherein:
the first air guide assembly is arranged in the case to divide the case into a hard disk array installation space for installing the hard disk array and a system fan installation space for installing the system fan; along the extending direction of the first air guide assembly, the first end of the first air guide assembly is in sealing fit with one side plate of the case, and the second end of the first air guide assembly is matched with the case to form a ventilation opening for communicating the hard disk array installation space with the system fan installation space; wherein, in the case, the first and second casing bodies,
a first air inlet used for being communicated with the hard disk array installation space and a first air outlet used for being communicated with the system fan installation space are formed in the side plate connected with the first end of the first air guide assembly;
the system fan comprises a first fan arranged at the first air outlet.
Above-mentioned digital video recorder includes quick-witted case, first air guide component, hard disk array, system's fan, wherein: the first air guide assembly is arranged in the case to divide the case into a hard disk array installation space for installing a hard disk array and a system fan installation space for installing a system fan; along the extending direction of the first air guide assembly, the first end of the first air guide assembly is in sealing fit with one side plate of the case, and the second end of the first air guide assembly is matched with the case to form a ventilation opening for communicating the hard disk array installation space with the system fan installation space; in the case, a side plate connected with a first end of the first air guide assembly is provided with a first air inlet communicated with the hard disk array mounting space and a first air outlet communicated with the system fan mounting space; the system fan comprises a first fan arranged at the first air outlet. The first air guide assembly can promote more air to flow through the hard disk array, so that the contact time of the air with the hard disks in the hard disk array is prolonged in a circulating mode, the heat dissipation of the hard disks in the middle area of the hard disk array can be particularly improved, and the integral temperature equalization level of the hard disk array is improved.
Preferably, the first air guide assembly comprises a first flat plate, the first flat plate is in sealing fit with the inner wall of the case to form a wind blocking portion for blocking ventilation between the hard disk array space and the system fan installation space, and one end, far away from the first air inlet, of the first flat plate is in fit with the case to form the ventilation opening.
Preferably, the first air guide assembly comprises a second flat plate in sealing fit with the inner wall of the case, an opening is formed in one end of the second flat plate to form the vent, and a wind blocking portion is formed in a position, located between the vent and the side plate where the first air inlet is located, of the second flat plate.
Preferably, the hard disk array is mounted in the hard disk array mounting space in a suspended manner along the extending direction of the first air inlet, and the length of the hard disk array, which is shielded by the wind shielding part, is greater than or equal to 1/2 of the length of the hard disk array and less than or equal to 3/4 of the length of the hard disk array.
Preferably, a second air inlet is formed in a side plate, opposite to the side plate provided with the first air inlet, of the chassis, the first air inlet is opposite to the first end of the hard disk array, and the second air inlet is opposite to the other end of the hard disk array.
Preferably, the chassis includes a top plate, a bottom plate and a plurality of side plates, the first air inlet is disposed in one side plate, and the second air inlet is disposed in one side plate; the hard disk video recorder further comprises: the second air guide assembly is arranged between the hard disk array and the bottom plate, and a tapered air guide channel gradually reduced from two sides to the middle is formed between the surface of the second air guide assembly facing the hard disk array and the surface of the hard disk array facing the bottom plate; and/or a third air guide assembly arranged between the hard disk array and the top plate, wherein a tapered air guide channel gradually tapered from two sides to the middle is formed between the surface of the third air guide assembly facing the hard disk array and the surface of the hard disk array facing the top plate.
Preferably, the second air guiding assembly comprises a plate-shaped, block-shaped or protruding structure which is symmetrically distributed and has a trapezoid shape or an arc shape; and/or the third air guide assembly comprises a plate-shaped, block-shaped or protruding structure which is symmetrically distributed and has a trapezoid shape or an arc shape.
Preferably, the system further comprises a power module which is located in the system fan installation space, wherein the first fan deviates from one side of the hard disk array and is close to the first fan, and a second air outlet is formed in the opposite position of the case body and one side of the power module deviating from the first fan.
Preferably, the fan further comprises a main board which is located in the system fan installation space, close to one side of the ventilation opening and arranged side by side with the power module, and a third air inlet is formed in the opposite position of one side of the case body and the main board, which deviates from the power module.
Preferably, the system fan further comprises a second fan installed at the second air outlet.
Preferably, the system fan further comprises a third fan installed at the third air inlet.
Preferably, the hard disk array is mounted in the hard disk array mounting space in a suspended manner through a hard disk bracket.
Drawings
Fig. 1 is a schematic view of an overall structure in a chassis of a hard disk video recorder according to an embodiment of the present invention;
FIG. 2 is a schematic view of a conventional hard disk recorder without a first air guiding assembly;
fig. 3 is a schematic flow guide diagram illustrating a case having a first air guiding assembly according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of a conventional hard disk recorder without a second air guide assembly;
FIG. 5 is a schematic view of the second flow guide assembly according to an embodiment of the present invention;
fig. 6 is a schematic view illustrating a flow guiding of a surface of a hard disk array when the hard disk array is double-layered according to an embodiment of the present invention;
fig. 7 is a schematic view illustrating the flow guidance of the whole hard disk array in a single-layer case according to an embodiment of the present invention;
fig. 8 is a schematic view of the flow guidance of the whole hard disk array in the case with two layers according to the embodiment of the present invention.
Icon:
1-a chassis; 11-a top plate; 12-a base plate; 2-hard disk array; 21-hard disk holder; 31-a first fan; 32-a second fan; 33-a third fan; 4-a first air guide component; 41-a wind shield; 42-a vent; 5-a second air guide component; 51-a third air guide assembly; 6-a power supply module; 7-a main board; 81-a first air inlet; 82-a second air inlet; 83-third air inlet; 91-a first air outlet; 92-a second air outlet.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a hard disk video recorder, including a case 1, a first wind guiding assembly 4, a hard disk array 2, and a system fan, wherein:
the first air guide assembly 4 is arranged inside the case 1 to divide the inside of the case 1 into a hard disk array installation space for installing a hard disk array and a system fan installation space for installing a system fan; along the extending direction of the first air guide assembly 4, the first end of the first air guide assembly 4 is in sealing fit with one side plate of the case, and the second end of the first air guide assembly 4 is matched with the case 1 to form a ventilation opening 42 for communicating the hard disk array installation space with the system fan installation space; wherein, in the machine case 1,
a first air inlet 81 used for being communicated with the hard disk array installation space and a first air outlet 91 used for being communicated with the system fan installation space are formed in the side plate connected with the first end of the first air guide assembly 4;
the system fan includes a first fan 31 installed at the first outlet 91.
Above-mentioned digital video recorder includes quick-witted case 1, first air guide component 4, hard disk array 2, system's fan, wherein:
the first air guide assembly 4 is arranged inside the case 1 to divide the inside of the case 1 into a hard disk array installation space for installing a hard disk array and a system fan installation space for installing a system fan; along the extending direction of the first air guide assembly 4, the first end of the first air guide assembly 4 is in sealing fit with one side plate of the case, and the second end of the first air guide assembly 4 is matched with the case 1 to form a ventilation opening 42 for communicating the hard disk array installation space with the system fan installation space; in the case 1, a first air inlet 81 for communicating with the hard disk array installation space and a first air outlet 91 for communicating with the system fan installation space are formed in a side plate 15 connected with a first end of a first air guide assembly 4; the system fan includes a first fan 31 installed at the first outlet 91. The first air guide assembly 4 can promote more air flow to flow through the hard disk array 2, so that the contact time of the air flow with the hard disks in the hard disk array 2 is prolonged in a bypass mode, the heat dissipation of the hard disks in the middle area of the hard disk array 2 can be particularly improved, and the overall temperature equalization level of the hard disk array 2 is improved.
Specifically, as shown in fig. 3, which is a schematic view of the flow guiding when the first air guiding assembly 4 is disposed in the chassis 1 of the hard disk video recorder provided in this embodiment, it can be seen from fig. 3 that after the air flow enters the chassis 1 from the first air inlet 81, the air flow bypasses the first air guiding assembly 4 under the suction of the first fan 31 and the flow guiding action of the first air guiding assembly 4 to flow, and the bypass path thereof covers more hard disks in the hard disk array 2, and the hard disks are discharged outside the chassis 1 through the first fan 31 after sufficient convection heat exchange with the hard disks. When the first air guiding assembly 4 is not provided (as shown in fig. 2), a short circuit phenomenon may be formed between the first air inlet 81 and the first fan 31, and the hard disk located in the middle area is substantially in a heat dissipation dead zone. Therefore, the partition type flow-around phenomenon generated by the first air guide assembly 4 increases the convection heat exchange area between the ventilation and the hard disk array 2, and effectively improves the temperature equalization level of the hard disk array 2.
In the above embodiment of the present invention, the first air guiding assembly 4 may be a first flat plate, the first flat plate is in sealing fit with the inner wall of the chassis 1 to form a wind blocking portion 41 for blocking ventilation between the hard disk array space and the system fan installation space, and one end of the first flat plate, which is far away from the first air inlet 81, is in fit with the chassis 1 to form a ventilation opening 42, as shown in fig. 3, the structure effectively realizes a flow guiding structure with a partition-type flow disturbing characteristic, and is simple and easy to manufacture.
In the embodiment of the invention, the first air guide assembly can also be a second flat plate which is in sealing fit with the inner wall of the case, one end part of the second flat plate is provided with an opening to form a ventilation opening, and a wind blocking part is formed at a part, positioned between the ventilation opening and the side plate where the first air inlet is positioned, of the second flat plate.
Specifically, the hard disk array 2 is suspended in the hard disk array installation space along the extending direction of the first air inlet 81, and the length of the hard disk array shielded by the wind shielding part 41 is greater than or equal to 1/2 of the length of the hard disk array 2 and less than or equal to 3/4 of the length of the hard disk array 2, as shown in fig. 3, the structure can improve the heat dissipation of the hard disks in the middle area of the hard disk array 2.
In the hard disk video recorder provided by the above embodiment of the invention, the side plate opposite to the side plate provided with the first air inlet 81 in the case 1 is provided with the second air inlet 82, the first air inlet 81 is opposite to the first end of the hard disk array 2, and the second air inlet 82 is opposite to the other end of the hard disk array 2.
In the hard disk video recorder provided by the embodiment of the present invention, the case 1 includes the top plate 11, the bottom plate 12 and a plurality of side plates, the first air inlet 81 is disposed in one side plate, and the second air inlet 82 is disposed in one side plate; the hard disk video recorder further comprises: the second air guide assembly 5 is arranged between the hard disk array 2 and the bottom plate 12, and a tapered air guide channel gradually tapered from two sides to the middle is formed between the surface of the second air guide assembly 5 facing the hard disk array 2 and the surface of the hard disk array 2 facing the bottom plate 12; and/or a third air guiding assembly 51 arranged between the hard disk array 2 and the top plate 11, wherein a tapered air guiding channel which is tapered from two sides to the middle is formed between the surface of the third air guiding assembly 51 facing the hard disk array 2 and the surface of the hard disk array 2 facing the top plate 11, as shown in fig. 5 and 6.
It should be noted that, in the embodiment of the present invention, the shape of the chassis 1 is exemplified by a rectangular parallelepiped cavity structure, and includes a top plate 11, a bottom plate 12, and 4 side plates, as shown in fig. 1, however, the shape of the chassis 1 may also be other shapes, which is not limited herein, and is determined according to actual requirements.
Specifically, as shown in fig. 5, fig. 5 is a schematic view of the second air guiding assembly 5, after entering the system from the first air inlet 81 and the second air inlet 82, the air flow gradually converges and flows towards the surface of the hard disk array 2 along the inclined surface of the second air guiding assembly 5, which not only increases the air volume near the hard disk array 2, but also obviously improves the flow velocity on the surface of the hard disk array 2, so that the surface convection heat transfer coefficient of the hard disk array 2 is increased, and the heat transfer capability is enhanced. As shown in fig. 4, which is a schematic flow guiding diagram when the second air guiding assembly 5 is not provided, it can be seen that the air flow gradually deviates from the hard disk array 2 and flows after entering the system, so that the air volume and the air speed on the surface of the hard disk array 2 are only of limited levels, and the heat dissipation strength of the hard disk array 2 cannot be ensured. Therefore, the tapered converging feature of the second air guiding assembly 5 in the embodiment of the present invention further enhances the heat dissipation capability of the hard disk array 2.
It should be noted that, in the embodiment of the present invention, the 1.5U chassis 1 has 4 disk positions, the hard disk array 2 is arranged in a single layer, only the second air guiding assembly 5 or the third air guiding assembly 51 may be selectively disposed near the surfaces of both sides of the hard disk array 2, while the 2U chassis 1 has 8 disk positions, the hard disk array 2 is arranged in a double layer, a certain distance is kept between the two layers, the second air guiding assembly 5 and the third air guiding assembly 51 are respectively arranged up and down according to the double-layer characteristics of the hard disk array 2, as shown in fig. 6, and the arrangement form of the first air guiding assembly 4 is the same as that of the 1.5U chassis 1.
Specifically, the second air guiding assembly 5 and/or the third air guiding assembly 51 may be configured as a plate-shaped, block-shaped or protruding structure with a trapezoidal or arc shape distributed symmetrically. For example, the second air guiding assembly 5 or the third air guiding assembly 51 is configured as a trapezoidal plate structure, which is formed by splicing two inclined plates and a horizontal plate, wherein the two inclined plates are respectively located at two ends of the horizontal plate and are distributed in bilateral symmetry with respect to the horizontal plate. When the second air guiding assembly 5 or the third air guiding assembly 51 is disposed between the bottom plate 12 or the top plate 11 and the hard disk array 2, the horizontal plate is close to the lower surface or the upper surface of the hard disk array 2, and both ends of the inclined plate are respectively fixed to two side plates of the chassis 1, as shown in fig. 5 and 6.
Specifically, in the view of the present embodiment, the shapes and positions of the first air guiding assembly 4, the second air guiding assembly 5, and the third air guiding assembly 51 are all implemented in a specific state, and actually need to be determined according to the size of the chassis 1, the positions of the hard disk array 2 and the first fan 31, and other factors, and all the flow guiding technologies conforming to the flow bypassing or converging characteristics of the present patent are within the protection scope of the present patent.
The hard disk video recorder provided by the above embodiment, as shown in fig. 1, further includes a power module 6 located in the system fan installation space, where the first fan 31 deviates from one side of the hard disk array 2 and is close to the first fan 31, and a second air outlet 92 is disposed at a position opposite to one side of the case body of the case 1 deviating from the first fan 31 with respect to the power module 6, so as to enhance heat dissipation of the power module 6.
The hard disk video recorder provided by the above implementation further comprises a main board 7 which is located in the installation space of the system fan and is close to one side of the vent 42 and arranged side by side with the power module 6, a third air inlet 83 is arranged at the opposite position of one side of the case body 1 deviating from the power module 6 with the main board 7, and under the suction effect of the first fan 31, the air flow outside the case 1 can enter the case body through the third air inlet 83 to disturb and dissipate heat of the main board 7, and then the air flow is discharged out of the case 1 through the first fan 31.
In the above embodiment, the system fan 3 may further include the second fan 32 installed at the second air outlet 92 and the third fan 33 installed at the third air inlet 83. The second fan 32 can assist the first fan 31 to perform enhanced heat dissipation on the whole system while enhancing the heat dissipation of the power module 6 itself. Optionally, a third fan 33 may be separately disposed at the third air inlet 83, and the third fan 33 selects an air blowing manner to blow air into the chassis 1, so as to meet a heat dissipation requirement when the power consumption of the motherboard 7 is high. In practical applications, the third fan 33 can also be used as the first fan 31, that is, the third fan 33 and the first fan 31 are combined into one. In practical implementation, the number, position or function of the fans (the first fan 31 or the third fan 33) will be selected according to actual conditions.
In the above embodiment, as shown in fig. 7, which is a schematic view of an overall streamline of a 1.5U case 1 of a hard disk video recorder in an embodiment of the present invention, and as shown in fig. 8, which is a schematic view of an overall streamline of a 2U case 1 of a hard disk video recorder in an embodiment of the present invention, under a system heat dissipation architecture composed of a first air guiding assembly 4, a second air guiding assembly 5 and/or a third air guiding assembly 51, a first fan 31, a motherboard 7, a power module 6, a second fan 32, a hard disk array 2, and a third fan 33, a whole system heat dissipation air duct of a hard disk video recorder in the embodiment of the present invention is designed to enhance heat dissipation of the hard disk array 2 and also consider heat dissipation of the motherboard 7, thereby effectively ensuring that.
In the above embodiment, as shown in fig. 7, the hard disk array 2 is suspended in the installation space of the hard disk array 2 by the hard disk bracket 21, and two end portions of the hard disk bracket 21 are respectively fixed on two side plates of the chassis. The hard disk array 2 is arranged on one side plate close to the case in the horizontal direction of the case 1, and is positioned in the center of the section of the case 1 in the vertical height direction, so that the heat dissipation requirement of the hard disk array 2 is facilitated.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides a hard disk video recorder which characterized in that, includes quick-witted case, first air guide component, hard disk array, system's fan, wherein:
the first air guide assembly is arranged in the case to divide the case into a hard disk array installation space for installing the hard disk array and a system fan installation space for installing the system fan; along the extending direction of the first air guide assembly, the first end of the first air guide assembly is in sealing fit with one side plate of the case, and the second end of the first air guide assembly is matched with the case to form a ventilation opening for communicating the hard disk array installation space with the system fan installation space; wherein, in the case, the first and second casing bodies,
a first air inlet used for being communicated with the hard disk array installation space and a first air outlet used for being communicated with the system fan installation space are formed in the side plate connected with the first end of the first air guide assembly;
the system fan comprises a first fan arranged at the first air outlet;
a second air inlet is formed in a side plate, opposite to the side plate provided with the first air inlet, in the case, the first air inlet is opposite to the first end of the hard disk array, and the second air inlet is opposite to the other end of the hard disk array;
the chassis comprises a top plate, a bottom plate and a plurality of side plates, wherein the first air inlet is formed in one side plate, and the second air inlet is formed in one side plate; the hard disk video recorder further comprises:
the second air guide assembly is arranged between the hard disk array and the bottom plate, and a tapered air guide channel gradually reduced from two sides to the middle is formed between the surface of the second air guide assembly facing the hard disk array and the surface of the hard disk array facing the bottom plate; and/or the presence of a gas in the gas,
and the third air guide assembly is arranged between the hard disk array and the top plate, and a tapered air guide channel gradually reduced from two sides to the middle is formed between the surface of the third air guide assembly facing the hard disk array and the surface of the hard disk array facing the top plate.
2. The video recorder of claim 1, wherein the first air guiding assembly comprises a first plate, the first plate is in sealing engagement with an inner wall of the chassis to form a wind blocking portion for blocking ventilation between the hard disk array space and the system fan installation space, and an end of the first plate, which is away from the first air inlet, is in engagement with the chassis to form the ventilation opening.
3. The video recorder according to claim 1, wherein the first air guide assembly includes a second plate that is in sealing engagement with an inner wall of the chassis, an opening is provided at one end of the second plate to form the ventilation opening, and a wind blocking portion is formed in a portion of the second plate located between the ventilation opening and a side plate where the first air inlet is located.
4. The video recorder according to claim 2 or 3, wherein the hard disk array is mounted in the hard disk array mounting space in a suspended manner along the extending direction of the first air inlet, and the length of the hard disk array shielded by the wind shielding part is greater than or equal to 1/2 of the length of the hard disk array and less than or equal to 3/4 of the length of the hard disk array.
5. The hard disk video recorder according to claim 1, wherein the second air guiding assembly comprises a symmetric trapezoidal or arc plate-shaped, block-shaped or convex structure; and/or the presence of a gas in the gas,
the third air guide assembly comprises a trapezoidal or arc-shaped plate-shaped, block-shaped or protruding structure which is symmetrically distributed.
6. The video recorder of claim 1, further comprising a power module disposed in the system fan mounting space on a side of the first fan facing away from the hard disk array and adjacent to the first fan, wherein a second air outlet is disposed at a position of the case body opposite to the side of the power module facing away from the first fan.
7. The video recorder of claim 6, further comprising a main board disposed adjacent to the side of the system fan mounting space adjacent to the vent and alongside the power module, wherein a third air inlet is disposed at a location of the case opposite to a side of the main board facing away from the power module.
8. The video hard disk recorder according to claim 6, wherein the system fan further comprises a second fan mounted at the second air outlet.
9. The video hard disk recorder of claim 7, wherein the system fan further comprises a third fan mounted at the third air inlet.
10. The video recorder of claim 1, wherein the hard disk array is suspended in the hard disk array mounting space by a hard disk bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810299858.0A CN108665913B (en) | 2018-04-04 | 2018-04-04 | Hard disk video recorder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810299858.0A CN108665913B (en) | 2018-04-04 | 2018-04-04 | Hard disk video recorder |
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| CN108665913B true CN108665913B (en) | 2020-02-14 |
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| CN109491469A (en) * | 2018-12-21 | 2019-03-19 | 郑州云海信息技术有限公司 | A kind of casing structure conducive to Hard disk heat radiation |
| CN112752492B (en) * | 2020-12-31 | 2023-04-14 | 国网山西省电力公司长治供电公司 | Intelligent optical digital audio wiring module |
| CN113157070B (en) * | 2021-03-01 | 2023-06-09 | 浙江大华技术股份有限公司 | Hard disk array heat abstractor and server |
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| CN205137694U (en) * | 2015-11-13 | 2016-04-06 | 青岛海尔空调器有限总公司 | Air -conditioning indoor unit |
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| CN108665913A (en) | 2018-10-16 |
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