CN108132701B - Heat dissipation air duct with sound absorption and noise reduction functions - Google Patents

Heat dissipation air duct with sound absorption and noise reduction functions Download PDF

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Publication number
CN108132701B
CN108132701B CN201810076202.2A CN201810076202A CN108132701B CN 108132701 B CN108132701 B CN 108132701B CN 201810076202 A CN201810076202 A CN 201810076202A CN 108132701 B CN108132701 B CN 108132701B
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China
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sound
air duct
heat dissipation
blade
noise reduction
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CN108132701A (en
Inventor
张文昌
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Zhengzhou Yunhai Information Technology Co Ltd
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Zhengzhou Yunhai Information Technology Co Ltd
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F04D29/664—Sound attenuation by means of sound absorbing material

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Wind Motors (AREA)

Abstract

The invention discloses a heat dissipation air duct with sound absorption and noise reduction functions, which comprises an air duct shell, wherein an air deflector and a sound absorption rotating wheel connected with the air duct shell rotating wheel are sequentially arranged in the air duct shell along the advancing direction of air flow. The sound-absorbing rotating wheel comprises a plurality of radially and uniformly distributed blades. The inside of wind channel casing, the left and right sides of aviation baffle, the windward side of blade and leeward side all are provided with the sound absorbing layer that is made by sound absorbing material. Through setting up in the heat dissipation wind channel and inhale sound runner and aviation baffle to set up the attraction material in the inboard of wind channel casing, the both sides of aviation baffle and inhale the windward side and the leeward side of the blade of sound runner, not only can guarantee like this that the air current passes through smoothly, can absorb most noise through the absorption and the reflection of attraction material in the in-process of sound propagation moreover, when guaranteeing the heat dissipation, reduced noise pollution.

Description

Heat dissipation air duct with sound absorption and noise reduction functions
Technical Field
The invention relates to the technical field of computer heat dissipation equipment, in particular to a heat dissipation air duct with sound absorption and noise reduction functions.
Background
Currently, the demands of people on the computing power of computers are higher and higher, and servers or large PC workstations are increasingly purchased and used by small enterprises or individuals. However, in general, a server with a relatively high power is equipped with a plurality of heat dissipation fans (such as a multi-node server) with a relatively high rotation speed, and when the server is started, a plurality of fans work together to bring about a relatively high noise, and most of the noise is diffused along with the heat dissipation air duct.
The high-power server is high in power and serious in heating, so that a traditional heat dissipation air duct applied to the high-power server is generally designed into a smooth straight-through structure, and the design can ensure blowing of hot air and heat dissipation in the server. This structure, while ensuring heat dissipation, also reduces noise blocking and noise pollution is serious. Especially for small enterprises and individuals, the normal operation of the staff is seriously affected by the fact that there is no separate space for placing the servers.
Disclosure of Invention
In order to solve the problems, the invention provides the radiating air duct with the sound absorption and noise reduction functions, which not only ensures the radiation, but also has good sound absorption and noise reduction functions.
The technical scheme adopted for solving the technical problems is as follows:
the heat dissipation air duct with the sound absorption and noise reduction functions comprises an air duct shell, wherein an air deflector and a sound absorption rotating wheel connected with the air duct shell rotating wheel are sequentially arranged in the air duct shell along the advancing direction of air flow;
the sound-absorbing rotating wheel comprises a plurality of radially and uniformly distributed blades;
the inside of wind channel casing, the left and right sides of aviation baffle, the windward side of blade and leeward side all are provided with the sound absorbing layer that is made by sound absorbing material.
Further, the air duct shell on be provided with through lock nut and air duct shell fixed connection's pivot, the outside cover of pivot is equipped with the hollow shaft, the upper and lower both ends of hollow shaft are provided with the fixed plate respectively, the blade set up in two between the fixed plate, and with fixed plate fixed connection.
Further, the upper end and the lower end of the blade are respectively provided with an ear plate, and the ear plates are fixedly connected with the fixing plate through screws.
Further, the upper portion and the lower part of blade are provided with the otic placode respectively, the otic placode on be provided with the locating hole, the fixed plate on be provided with be used for holding the slot of blade, be provided with on the medial surface of fixed plate with locating hole matched with location arch.
Further, the suspension end of the blade is provided with a first inclined plate and a second inclined plate, the first inclined plate and the second inclined plate jointly form a triangular concave part with an opening facing the windward side, the windward side and the leeward side of the first inclined plate, and the windward side and the leeward side of the second inclined plate are respectively provided with a sound absorption layer made of sound absorption materials.
Further, the suspension end of the blade is provided with an arc-shaped plate, the arc-shaped plate forms a semicircular concave part with an opening facing the windward side, and the windward side and the leeward side of the arc-shaped plate are both provided with sound absorption layers made of sound absorption materials.
Further, the air deflector is obliquely arranged, and the air flow cross section area is gradually reduced along the advancing direction of the air flow.
Further, the sound absorbing material is made of inorganic fiber spraying materials.
The beneficial effects of the invention are as follows:
1. through setting up in the heat dissipation wind channel and inhale sound runner and aviation baffle to set up the attraction material in the inboard of wind channel casing, the both sides of aviation baffle and inhale the windward side and the leeward side of the blade of sound runner, not only can guarantee like this that the air current passes through smoothly, can absorb most noise through the absorption and the reflection of attraction material in the in-process of sound propagation moreover, when guaranteeing the heat dissipation, reduced noise pollution.
2. By obliquely arranging the air guide plate, the air flow area gradually becomes smaller along with the direction of the air flow, so that the wind speed of the windward side of the sound-absorbing rotating wheel can be increased, and the minimum air flow speed at the air inlet capable of rotating the sound-absorbing rotating wheel is reduced.
3. The hollow part with the leaning port facing the windward side is arranged at the suspension end of the sound-absorbing rotary wheel blade, so that the effect of 'wind-catching' can be generated, and the minimum airflow speed capable of rotating the sound-absorbing rotary wheel is reduced.
4. Through setting up the depressed part that leans on mouthful towards the windward side at the suspension end of inhaling sound runner blade, the sound wave of propagating like this can be in the inside repeated reflection of depressed part, until by whole absorption, inhale sound effect good.
5. The structure of the heat dissipation air duct can be directly modified on the original heat dissipation air duct without remanufacturing, and is more convenient to apply.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a perspective view of the internal structure of the present invention;
FIG. 3 is an enlarged schematic view of the portion A in FIG. 2;
fig. 4 is a schematic perspective view of a sound absorbing rotor;
FIG. 5 is an enlarged schematic view of the portion B of FIG. 4;
FIG. 6 is an enlarged schematic view of the portion C of FIG. 4;
FIG. 7 is a schematic perspective view of a blade;
fig. 8 is a schematic perspective view of a sound-absorbing rotary wheel according to a second embodiment;
fig. 9 is a top view of a sound absorbing rotor in a second embodiment;
fig. 10 is a schematic perspective view of a sound-absorbing rotary wheel according to a third embodiment;
FIG. 11 is a schematic perspective view of a sound absorbing runner of the third embodiment with blades removed;
fig. 12 is a schematic perspective view of another direction of the sound-absorbing runner of the third embodiment with the blades removed;
fig. 13 is a schematic perspective view of a blade in the third embodiment.
In the figure: 1-an air duct shell, 2-a sound-absorbing rotating wheel, 21-a hollow shaft, 22-a fixing plate, 221-a slot, 222-a positioning protrusion, 23-a blade, 231-an ear plate, 232-a first inclined plate, 233-a second inclined plate, 234-a positioning hole, 3-a rotating shaft, 31-a locking nut and 4-an air deflector.
Detailed Description
For convenience of description, the direction of the air flow is taken as the front-rear direction, and the axial direction of the sound absorbing rotary wheel 2 is taken as the up-down direction.
Example 1
As shown in fig. 1, a heat dissipation air duct with sound absorption and noise reduction functions comprises an air duct shell 1, wherein an air deflector 4 and a sound absorption rotating wheel 2 are sequentially arranged in the air duct shell 1 along the advancing direction of air flow, and the sound absorption rotating wheel 2 is connected with the air duct shell 1 through a rotating wheel.
As shown in fig. 4 and 6, the sound absorbing rotary wheel 2 includes a hollow shaft 21, fixing plates 22 are fixedly disposed at the upper and lower ends of the hollow shaft 21, and the fixing plates 22 are perpendicular to the axis of the hollow shaft 21. A plurality of blades 23 are radially and uniformly arranged between the two fixing plates 22, and the upper and lower ends of the blades 23 are fixedly connected with the fixing plates 22 respectively.
As shown in fig. 5, 6 and 7, in this embodiment, the upper and lower ends of the blade 23 are respectively provided with an ear plate 231 extending toward the windward side, and the ear plate 231 is fixedly connected with the fixing plate 22 by a screw.
Inside the duct housing 1, the left and right sides of the air guide plate 4, and the windward side and the leeward side of the blades 23 are provided with sound absorbing layers (not shown) made of sound absorbing materials. Preferably, the inorganic fiber spray material is used as the sound absorbing material in the embodiment because the inorganic fiber spray material has the advantages of excellent sound insulation effect, fire resistance, simple use method and the like.
As shown in fig. 3, the air duct housing 1 is provided with a rotating shaft 3, the rotating shaft 3 is fixedly connected with the air duct housing 1 through locking nuts 31 arranged at the upper end and the lower end of the rotating shaft 3, and the hollow shaft 21 is sleeved outside the rotating shaft 3.
The main reason of this design is to make it convenient to retrofit on the existing heat dissipation air duct, if the hollow shaft 21 of the sound absorbing rotary wheel 2 is directly connected with the air duct housing 1 in a rotating way, there is a great problem in installation, and it cannot be installed. When the structure is installed, firstly, the whole sound-absorbing rotary wheel 2 is placed in the air duct shell 1, the through hole of the hollow shaft 21 is aligned with the through hole of the air duct shell 1 for accommodating the rotary shaft 3, then the rotary shaft 3 is inserted, and the locking nut 31 is screwed.
As shown in fig. 7, the suspension end of the vane 23 is provided with a first inclined plate 232 and a second inclined plate 233, wherein the first inclined plate 232 is inclined towards the leeward side, the second inclined plate 233 is inclined towards the windward side, and the vane 23, the first inclined plate 232 and the second inclined plate 233 are sequentially connected end to end along the direction from inside to outside (the side far away from the hollow shaft 21 in the radial direction is the outer side). The first inclined plate 232 and the second inclined plate 233 together form a triangular recess with an opening facing the windward side, and the recess is located on the leeward side of the blade 23. The windward side and the leeward side of the first inclined plate 232, and the windward side and the leeward side of the second inclined plate 233 are each provided with a sound absorbing layer made of a sound absorbing material.
The main purposes of such a design are two: first, in order to reduce the minimum air flow rate at which the suction wheel can be driven to rotate. By providing the hollow portion at the suspension end of the blade 23, the windward area of the suspension end is increased, and the effect of "windward" is generated, so that the same air flow speed can generate a larger thrust. What is actually overcome when driving the sound-absorbing wheel 2 in rotation is the friction between the hollow shaft 21 and the shaft 3, which is a constant value. The minimum air flow speed at which the suction wheel can be driven to rotate can be reduced by providing the hollow at the suspension end of the blade 23. Therefore, even small air flow can push the sound-absorbing rotary wheel 2 to rotate, so that air circulation is smoother during heat dissipation. Second, by providing the hollow portion toward the windward side near the opening at the suspension end of the blade 23 of the sound absorbing rotary wheel 2, the sound wave propagated in this way is repeatedly reflected between the first inclined plate 232 and the second inclined plate 233 until it is absorbed in its entirety, and the sound absorbing effect is good.
As shown in fig. 1, the air deflector 4 is disposed obliquely, and the air flow cross-sectional area is gradually reduced along the advancing direction of the air flow. Thus, even if the air flow velocity at the inlet of the duct housing 1 is small, the air flow velocity becomes large due to the small air flow cross-sectional area, so that the wind speed becomes large when the air flow reaches the windward side of the sound-absorbing rotor 2, thereby reducing the minimum air flow velocity at the air inlet where the sound-absorbing rotor 2 can be rotated.
Example two
As shown in fig. 8 and 9, the suspension end of the blade 23 is provided with an arc plate, the projection of the arc plate in the horizontal plane is semicircular, the axis of the arc plate is located in the plane where the windward side of the blade 23 is located, and the arc plate forms a semicircular recess with an opening facing the windward side. The windward side and the leeward side of the arc plate are respectively provided with a sound absorbing layer made of sound absorbing materials.
The rest of the structure is the same as that of the first embodiment.
Example III
As shown in fig. 10, 11, 12 and 13, the upper and lower ends of the windward side of the blade 23 are respectively provided with an ear plate 231 extending toward the windward side, the upper end of the blade 23 protrudes above the ear plate 231 located above, and the lower end of the blade 23 protrudes below the ear plate 231 located below. The ear plate 231 is provided with a positioning hole 234. The fixing plate 22 is provided with a plurality of radially and uniformly distributed slots 221, and the number of the slots 221 is the same as that of the blades 23 and corresponds to that of the blades one by one. The upper and lower ends of the blade 23 are respectively inserted into the insertion grooves. The inner side surface of the fixing plate 22 is provided with a positioning protrusion 222 (the opposite side of the two fixing plates 22 is used as the inner side) which is matched with the positioning hole 234.
The rest of the structure is the same as that of the first embodiment.

Claims (6)

1. The utility model provides a heat dissipation wind channel with sound absorption and noise reduction function, includes wind channel casing, its characterized in that: an air deflector and a sound-absorbing rotating wheel which is rotationally connected with the air duct shell are sequentially arranged in the air duct shell along the advancing direction of air flow;
the sound-absorbing rotating wheel comprises a plurality of radially and uniformly distributed blades;
sound absorbing layers made of sound absorbing materials are arranged on the inner side of the air duct shell, on the left side and the right side of the air deflector, and on the windward side and the leeward side of the blades;
the air duct shell is provided with a rotating shaft fixedly connected with the air duct shell through a lock nut, a hollow shaft is sleeved outside the rotating shaft, the upper end and the lower end of the hollow shaft are respectively provided with a fixed plate, and the blade is arranged between the two fixed plates and is fixedly connected with the fixed plates;
the air deflector is obliquely arranged, and the air flow cross section area is gradually reduced along the advancing direction of the air flow;
the suspension end of the sound-absorbing runner blade is provided with a concave part with an opening facing the windward side.
2. The heat dissipation air duct with sound absorption and noise reduction functions according to claim 1, wherein: the upper and lower ends of the blade are respectively provided with an ear plate, and the ear plates are fixedly connected with the fixing plate through screws.
3. The heat dissipation air duct with sound absorption and noise reduction functions according to claim 1, wherein: the upper portion and the lower part of blade are provided with the otic placode respectively, the otic placode on be provided with the locating hole, the fixed plate on be provided with be used for holding the slot of blade, be provided with on the medial surface of fixed plate with locating hole matched with location arch.
4. The heat dissipation air duct with sound absorption and noise reduction functions according to claim 1, wherein: the suspension end of blade is provided with first swash plate and second swash plate, first swash plate and second swash plate form a triangle-shaped depressed part that the opening is towards the windward side jointly, windward side and leeward side of first swash plate, windward side and leeward side of second swash plate all are provided with the sound absorbing layer that is formed by sound absorbing material preparation.
5. The heat dissipation air duct with sound absorption and noise reduction functions according to claim 1, wherein: the suspension end of blade is provided with the arc, the arc form the opening towards the semicircular depressed part that is of windward side, windward side and leeward side of arc all are provided with the sound absorbing layer that is made by sound absorbing material.
6. The heat dissipation air duct with sound absorption and noise reduction functions according to claim 1, wherein: the sound absorbing material is made of inorganic fiber spraying materials.
CN201810076202.2A 2018-01-26 2018-01-26 Heat dissipation air duct with sound absorption and noise reduction functions Active CN108132701B (en)

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CN201810076202.2A CN108132701B (en) 2018-01-26 2018-01-26 Heat dissipation air duct with sound absorption and noise reduction functions

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Application Number Priority Date Filing Date Title
CN201810076202.2A CN108132701B (en) 2018-01-26 2018-01-26 Heat dissipation air duct with sound absorption and noise reduction functions

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CN108132701B true CN108132701B (en) 2023-09-26

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113473797B (en) * 2021-05-31 2023-07-14 山东英信计算机技术有限公司 Server cabinet and multipath server thereof

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CN103322619A (en) * 2013-06-21 2013-09-25 青岛海信日立空调***有限公司 Indoor unit of duct air conditioner
CN205792034U (en) * 2016-05-27 2016-12-07 慈溪市华夏电器实业有限公司 A kind of heat radiation denoising structure of synchronous motor
CN206073182U (en) * 2016-08-28 2017-04-05 杭州老板电器股份有限公司 The water conservancy diversion sound-absorbing solid noise reduction system of lampblack absorber

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JP5308381B2 (en) * 2009-06-08 2013-10-09 株式会社日立製作所 Sound absorber for electronic equipment

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CN103322619A (en) * 2013-06-21 2013-09-25 青岛海信日立空调***有限公司 Indoor unit of duct air conditioner
CN205792034U (en) * 2016-05-27 2016-12-07 慈溪市华夏电器实业有限公司 A kind of heat radiation denoising structure of synchronous motor
CN206073182U (en) * 2016-08-28 2017-04-05 杭州老板电器股份有限公司 The water conservancy diversion sound-absorbing solid noise reduction system of lampblack absorber

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