CN103790842A - Noise-reduction cooling fan - Google Patents
Noise-reduction cooling fan Download PDFInfo
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- CN103790842A CN103790842A CN201410075367.XA CN201410075367A CN103790842A CN 103790842 A CN103790842 A CN 103790842A CN 201410075367 A CN201410075367 A CN 201410075367A CN 103790842 A CN103790842 A CN 103790842A
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- cooling fan
- reduction cooling
- noise reduction
- shell
- drive motor
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Abstract
The invention discloses a noise-reduction cooling fan. The noise-reduction cooling fan comprises an air inlet section outer shell, a middle section outer shell, an exhaust section outer shell, a drive motor and fan blades connected to the drive motor. A rectification net is arranged between the air inlet section outer shell and the middle section outer shell. A cavity of the exhaust section outer shell is internally provided with an exhaust guiding blade grid, and the drive motor is connected to the exhaust guiding blade grid. Due to the fact that the noise-reduction cooling fan is provided with the rectification net, pneumatic noise and mechanical vibration noise both of which are generated by the fan are effectively reduced, the safety performance and running efficiency of a high-performance server are greatly improved, and the efficiency of the fan and the performance of a hard disc are improved.
Description
Technical field
The present invention relates to a kind of noise reduction cooling fan, relate in particular to a kind of high-performance server noise reduction cooling fan.
Background technique
Computer technology has been widely used among all trades and professions, and especially high-performance server, no matter its safe and reliable operation is to have played vital effect for development or the national Andu of national economy.Practical experience shows, noise is to cause high-performance server fault or the low main cause of operational efficiency.
The cooling of high-performance server is mainly to realize by fan cooled at present.The aerodynamic noise of fan and mechanical vibration noise not only all have larger impact for Security and the operational efficiency of high-performance server, and have reduced the efficiency of fan, cause the waste of the energy.Research shows, when noise sound reaches 90-120dBA, causes the hydraulic performance decline 50% of hard disk.
Summary of the invention
For this reason, the present invention proposes a kind of new noise reduction cooling fan of at least a portion that can address the above problem.
The invention provides a kind of noise reduction cooling fan, comprising: air inlet section shell, intermediate section shell, exhaust section shell, drive motor and be connected to the fan blade on drive motor, wherein, be provided with screens between described air inlet section shell and described intermediate section shell; In the cavity of described exhaust section shell, be provided with exhaust nozzle blade cascade, described drive motor is connected on described exhaust nozzle blade cascade.
Alternatively, according to noise reduction cooling fan of the present invention, on described fan blade, be connected with the section of stretching out shell, described in the section of stretching out jacket on described drive motor and to described exhaust nozzle blade cascade direction, extend.
Alternatively, according to noise reduction cooling fan of the present invention, described drive motor and described exhaust nozzle blade cascade are bolted, and have damping spring in the outer cover of described bolt.
Alternatively, according to noise reduction cooling fan of the present invention, the material of described screens is plastics, iron or titanium alloy.
Alternatively, according to noise reduction cooling fan of the present invention, the number of plies of described screens is 1-3.
Alternatively, according to noise reduction cooling fan of the present invention, described in the material of the section of stretching out shell be sponge or foam metal sound-absorbing material.
Alternatively, according to noise reduction cooling fan of the present invention, the material of described air inlet section shell is duroplasts, iron, aluminium or stainless steel.
Alternatively, according to noise reduction cooling fan of the present invention, the material of described intermediate section shell is duroplasts, iron, aluminium or stainless steel.
Alternatively, according to noise reduction cooling fan of the present invention, the material of described exhaust section shell is duroplasts, iron, aluminium or stainless steel.
Noise reduction cooling fan of the present invention, by screens is set, reduces aerodynamic noise and mechanical vibration noise that fan produces effectively, has greatly improved Security and the operational efficiency of high-performance server, has also improved the efficiency of fan and the performance of hard disk.
Accompanying drawing explanation
By reading below detailed description of the preferred embodiment, various other advantage and benefits will become cheer and bright for those of ordinary skills.Accompanying drawing is only for the object of preferred implementation is shown, and do not think limitation of the present invention.And in whole accompanying drawing, represent identical parts by identical reference symbol.Wherein in the accompanying drawings, the multiple identical parts of alphabetic flag indication after reference number, in the time of these parts of general reference, will omit its last alphabetic flag.In the accompanying drawings:
Fig. 1 is the generalized section of noise reduction cooling fan;
Fig. 2 is the shell schematic diagram of noise reduction cooling fan;
Fig. 3 is the structural representation of screens;
Fig. 4 is the structural representation of fan blade;
Fig. 5 is the connection diagram of exhaust nozzle blade cascade and drive motor.
Wherein, in accompanying drawing, the implication of each mark is:
Second flanged surface 12 of second flanged surface 10 of air inlet section shell 1, intermediate section shell 2, exhaust section shell 3, screens 4, the section of stretching out shell 5, damping spring 6, drive motor 7, exhaust nozzle blade cascade 8, fan blade 9, air inlet section shell, first flanged surface 11 of intermediate section shell, intermediate section shell and first flanged surface 13 of exhaust section shell.
Embodiment
Below in conjunction with accompanying drawing and concrete mode of execution, the invention will be further described.
Fig. 1 and Fig. 2 show respectively the generalized section of noise reduction cooling fan of the present invention and the shell schematic diagram of described noise reduction cooling fan.As shown in Figure 1, described noise reduction cooling fan comprises air inlet section shell 1, intermediate section shell 2, exhaust section shell 3, screens 4, is arranged on exhaust nozzle blade cascade 8, drive motor 7 and fan blade 9 in exhaust section cavity pocket of outer cover.Described air inlet section shell 1, described intermediate section shell 2 and described exhaust section shell 3 can be overall structure, also can be respectively independently part, to facilitate processing, transportation and to install.When three is during for part independently, the mode of its connection has multiple, as flange connects and screwed connection, wherein, connects the most commonly with flange, and on two end faces of described three independent sectors, flanged surface being set can conveniently connect.Being connected to example with flange below describes, as shown in Figure 2, the shell of described noise reduction cooling fan comprises air inlet section shell 1, intermediate section shell 2 and exhaust section shell 3, on 10 4 angles of second flanged surface of described air inlet section shell, be provided with four tapped holes, correspondingly on 11 4 angles of first flanged surface of described intermediate section shell, be also provided with four tapped holes, by bolt 9, described air inlet section shell 1 and described intermediate section shell 2 coupled together; On 12 4 angles of second flanged surface of described intermediate section shell, be provided with four tapped holes, correspondingly on 13 4 angles of first flanged surface of described exhaust section shell, be also provided with four tapped holes, by bolt 9, described intermediate section shell 2 and described exhaust section shell 3 coupled together.
As shown in figures 1 and 3, described screens 4 is arranged between described air inlet section shell 1 and described intermediate section shell 2, described screens has tapped hole on 4 four angles, bolt is through the tapped hole of second flanged surface 10 of described air inlet section shell, the tapped hole of first flanged surface 11 and the tapped hole of described screens 4 of described intermediate section shell, described screens 4, described air inlet section shell 1 and described intermediate section shell 2 are coupled together, described screens 4 can reduce the turbulence degree of air inlet effectively, thereby can effectively reduce the aerodynamic noise of cooling fan.
In noise reduction cooling fan of the present invention, described fan blade 9 is detachably connected on described drive motor 7, on described fan blade 9, be connected with the section of a stretching out shell 5, described in the section of stretching out shell 5 cover on described drive motor 7 and extend to described exhaust nozzle blade cascade 8 directions.As shown in Figure 1 and Figure 4, the section of stretching out shell 5 described in described fan blade 9 is connected with, the described section of stretching out shell 5 and described fan blade 9 are as a whole, the described section of stretching out shell 5 is to be processed by sound-absorbing material, the rear end of the described section of stretching out shell 5 extends to described exhaust nozzle blade cascade 8 front-end faces, and keep a small gap between described exhaust nozzle blade cascade 8 front-end faces, guarantee can not bump in rotation.The described section of stretching out shell 5 wraps up described drive motor 7, as a whole with 9 one-tenth of described fan blades, has guaranteed the slickness of air passageways, effectively reduces the noise producing because structure is inhomogeneous; On the other hand, because the described section of stretching out shell 5 is sound-absorbing material, thus the noise producing is played to consumption, thus play the low noise effect of falling.
In noise reduction cooling fan of the present invention, described drive motor 7 is arranged on described exhaust nozzle blade cascade 8 by bolt 9, and the bolt outer cover that connects described drive motor 7 and described exhaust nozzle blade cascade 8 has damping spring 6.As shown in Figure 5, described drive motor 7 is bolted on described exhaust nozzle blade cascade 8, bolt outer cover has described damping spring 6, avoid in the time that described fan blade 9 rotates, structural inhomogeneity and pneumatic nonuniformity are vibrated described drive motor 7 and are produced vibrations noise, and then pass to cabinet and server master board by cooling fan fixing bolt, cause server to damage or the low situation of operational efficiency.
In noise reduction cooling fan of the present invention, the material of described screens 4 is plastics, iron or titanium alloy.Plastics are take monomer as raw material, the polymeric compound forming by addition polymerization or polycondensation polymerized, and plastics have chemical stabilization, can corrosion; Impact resistance is good; There is the good transparency and wear resistance performance; Good insulating, thermal conductivity is low; The advantages such as general moldability, coloring are good, and processing cost is low.The advantages such as titanium alloy is the alloy that adds other element compositions take titanium as basis, has intensity high, and hot strength is high, and corrosion stability is good, and cryogenic property is good, and chemism is large, heat conduction good springiness, but higher on cost.According to the height of cost, preferentially selecting plastics is the material of described screens 4.
In noise reduction cooling fan of the present invention, the number of plies of described screens 4 is 1-3.The number of plies of described screens is more, just more effectively reduces the turbulence degree of air inlet, thereby can effectively reduce the aerodynamic noise of cooling fan.According to the height of cost, selecting the number of plies of screens is 1-3.
In noise reduction cooling fan of the present invention, described in the material of the section of stretching out shell 5 be sponge or foam metal sound-absorbing material.Foam metal is that porosity reaches more than 90%, has the porous metals of some strength and rigidity.Porosity is the volume of all holes in porous body and the ratio of porous body total volume, porous metals are that metal body is to be formed through high temperature sintering by small spheroid (being commonly called as powder), metal inside all directions are all covered with atomic little pore, are also ventilative metal or porous breathable steel.
In noise reduction cooling fan of the present invention, the material of described air inlet section shell 1, described intermediate section shell 2 and described exhaust section shell 3 is duroplasts, iron, aluminium or stainless steel.Duroplasts is thermosetting plastics, is with hot-pressing method processing, after moulding, can not again process the plastics of use, and in general duroplasts is raw plastics, harder, cheap.Iron is the most frequently used a kind of metal, is the metallic element that earth's crust content second is high.Iron is glossiness silvery white metal, and firmly having ductility, fusing point is 1535 ℃, and 2750 ℃ of boiling points, have very strong ferromagnetism, and have good plasticity and thermal conductivity.Aluminium is argenteous light metal, has good ductility, can form one deck and prevent the patina of metal erosion in humid air.Steel is take iron as essential element, and Kohlenstoffgehalt is generally below 2.0% and the metallic material that contains other elements, and steel has better physics, chemistry, mechanical property than the initial pig iron.
Noise reduction cooling fan of the present invention is by arranging screens, the section of stretching out shell and damping spring, effectively reduce aerodynamic noise and mechanical vibration noise that fan produces, greatly improve Security and the operational efficiency of high-performance server, also improved the efficiency of fan and the performance of hard disk.
It should be noted, the present invention will be described rather than limit the invention for above-described embodiment, and those skilled in the art can design alternative embodiment in the case of not departing from the scope of claims.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and is not listed as element or step in the claims.Being positioned at word " " before element or " one " does not get rid of and has multiple such elements.In the unit claim of having enumerated some devices, several in these devices can be to carry out imbody by same hardware branch.The use of word first, second and C grade does not represent any order.Can be title by these word explanations.
Claims (9)
1. a noise reduction cooling fan, comprising: air inlet section shell (1), intermediate section shell (2), exhaust section shell (3), drive motor (7) and be connected to the fan blade (9) on drive motor, wherein,
Between described air inlet section shell (1) and described intermediate section shell (2), be provided with screens (4);
In the cavity of described exhaust section shell (3), be provided with exhaust nozzle blade cascade (8), described drive motor (7) is connected on described exhaust nozzle blade cascade (8).
2. noise reduction cooling fan according to claim 1, it is characterized in that: on described fan blade (9), be connected with the section of stretching out shell (5), described in the section of stretching out shell (5) to cover on described drive motor (7) upper and extend to described exhaust nozzle blade cascade (8) direction.
3. noise reduction cooling fan according to claim 1, is characterized in that: described drive motor (7) and described exhaust nozzle blade cascade (8) are bolted, and have damping spring (6) in the outer cover of described bolt.
4. noise reduction cooling fan according to claim 1, is characterized in that: the material of described screens (4) is plastics, iron or titanium alloy.
5. noise reduction cooling fan according to claim 1, is characterized in that: the number of plies of described screens (4) is 1-3.
6. noise reduction cooling fan according to claim 1, is characterized in that: described in the material of the section of stretching out shell (5) be sponge or foam metal sound-absorbing material.
7. noise reduction cooling fan according to claim 1, is characterized in that: the material of described air inlet section shell (1) is duroplasts, iron, aluminium or stainless steel.
8. noise reduction cooling fan according to claim 1, is characterized in that: the material of described intermediate section shell (2) is duroplasts, iron, aluminium or stainless steel.
9. noise reduction cooling fan according to claim 1, is characterized in that: the material of described exhaust section shell (3) is duroplasts, iron, aluminium or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410075367.XA CN103790842A (en) | 2014-03-03 | 2014-03-03 | Noise-reduction cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410075367.XA CN103790842A (en) | 2014-03-03 | 2014-03-03 | Noise-reduction cooling fan |
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| CN103790842A true CN103790842A (en) | 2014-05-14 |
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| CN201410075367.XA Pending CN103790842A (en) | 2014-03-03 | 2014-03-03 | Noise-reduction cooling fan |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105358816A (en) * | 2013-07-09 | 2016-02-24 | Nok株式会社 | Sealing device |
| CN106481587A (en) * | 2016-09-12 | 2017-03-08 | 郑州云海信息技术有限公司 | A kind of fan system and server |
| CN107014450A (en) * | 2017-04-29 | 2017-08-04 | 成都伦慈仪表有限公司 | The ultrasonic flowmeter of noise reduction rectifier structure and its composition |
| CN109002147A (en) * | 2018-08-21 | 2018-12-14 | 郑州云海信息技术有限公司 | A kind of machine box for server and its high frequency air inlet flow field rectify radiator structure |
| CN115217779A (en) * | 2022-06-28 | 2022-10-21 | 南通升辉机械有限公司 | Novel ventilating fan with shock wave resisting function |
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| CN201420697Y (en) * | 2009-04-30 | 2010-03-10 | 陈祖能 | Mining building block-type axial-flow fan |
| CN101963157A (en) * | 2010-09-30 | 2011-02-02 | 大连理工大学 | High total pressure large-flow wheel disk side beveling type back-ward impeller fan |
| CN202468477U (en) * | 2012-03-15 | 2012-10-03 | 株洲联诚集团有限责任公司 | Axial flow fan (in machine room) for electric locomotives |
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- 2014-03-03 CN CN201410075367.XA patent/CN103790842A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS57159999A (en) * | 1981-03-27 | 1982-10-02 | Sanou Denki Kk | Axial flow blower structure |
| US5088886A (en) * | 1990-08-28 | 1992-02-18 | Sinko Kogyo Co., Ltd. | Inlet air flow conditioning for centrifugal fans |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105358816A (en) * | 2013-07-09 | 2016-02-24 | Nok株式会社 | Sealing device |
| CN106481587A (en) * | 2016-09-12 | 2017-03-08 | 郑州云海信息技术有限公司 | A kind of fan system and server |
| CN107014450A (en) * | 2017-04-29 | 2017-08-04 | 成都伦慈仪表有限公司 | The ultrasonic flowmeter of noise reduction rectifier structure and its composition |
| CN107014450B (en) * | 2017-04-29 | 2023-11-14 | 成都伦慈仪表有限公司 | Noise reduction rectifying structure and ultrasonic flowmeter comprising same |
| CN109002147A (en) * | 2018-08-21 | 2018-12-14 | 郑州云海信息技术有限公司 | A kind of machine box for server and its high frequency air inlet flow field rectify radiator structure |
| CN115217779A (en) * | 2022-06-28 | 2022-10-21 | 南通升辉机械有限公司 | Novel ventilating fan with shock wave resisting function |
| CN115217779B (en) * | 2022-06-28 | 2023-12-26 | 南通升辉机械有限公司 | Novel ventilating fan with shock wave resistance function |
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Application publication date: 20140514 |
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