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US20120255713A1 - Cooling System Equipped with an Advection-Type Fan - Google Patents

Cooling System Equipped with an Advection-Type Fan Download PDF

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Publication number
US20120255713A1
US20120255713A1 US13/175,986 US201113175986A US2012255713A1 US 20120255713 A1 US20120255713 A1 US 20120255713A1 US 201113175986 A US201113175986 A US 201113175986A US 2012255713 A1 US2012255713 A1 US 2012255713A1
Authority
US
United States
Prior art keywords
advection
radial air
type fan
cooling system
impeller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/175,986
Other languages
English (en)
Inventor
Alex Horng
Cheng-Hsueh Lee
Yuan-Jie Zheng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sunonwealth Electric Machine Industry Co Ltd
Original Assignee
Sunonwealth Electric Machine Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sunonwealth Electric Machine Industry Co Ltd filed Critical Sunonwealth Electric Machine Industry Co Ltd
Assigned to SUNONWEALTH ELECTRIC MACHINE INDUSTRY CO., LTD. reassignment SUNONWEALTH ELECTRIC MACHINE INDUSTRY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HORNG, ALEX, LEE, CHENG-HSUEH, ZHENG, Yuan-jie
Publication of US20120255713A1 publication Critical patent/US20120255713A1/en
Abandoned legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

Definitions

  • the present invention generally relates to a cooling system and, more particularly, to a cooling system equipped with an advection-type fan.
  • the axial-flow type cooling fan has an axial air inlet and an axial air outlet opposite to the axial air inlet. The air can be drawn via the axial air inlet and then expelled via the axial air outlet.
  • the blower type cooling fan has an axial air inlet in the axial direction, as well as a radial air outlet in the radial direction thereof. Thus, the air can be drawn via the axial air inlet and then expelled via the radial air outlet for cooling operation.
  • the axial-flow type cooling fan must be mounted on a top of an electronic device to be cooled, such as on the top of a Central Processing Unit (CPU) of a computer. This is because the axial-flow type cooling fan can only expel air in the axial direction rather than the radial direction. Therefore, the axial height of the electronic device can not be reduced.
  • the blower type cooling fan draws air via the axial air inlet (in an axial direction) and expels air via the radial air outlet (in a radial direction), the blower type cooling fan can not be applied to electronic devices that draw air from a lateral face (from the radial direction), such as a handset or a Personal Digital Assistant (PDA).
  • PDA Personal Digital Assistant
  • a conventional advection-type fan 8 capable of drawing and expelling air in the radial direction was proposed.
  • a conventional advection-type fan 8 is disclosed by a Taiwanese Patent No. 553323 entitled “Fan Structure Having Horizontal Convection”.
  • the conventional advection-type fan 8 includes a housing 81 and an impeller 82 .
  • the housing 81 is a hollow housing consisting of a bottom plate 811 , a plurality of lateral walls 812 and a cover plate 813 .
  • the housing 81 includes at least one radial air inlet 83 and at least one radial air outlet 84 .
  • the impeller 82 is disposed in the housing 81 .
  • the conventional advection-type fan 8 can be installed in a casing 9 of an electronic device.
  • the impeller 82 rotates, the at least one radial air inlet 83 and the at least one radial air outlet 84 can cause air advection, bringing air into the casing 9 to cool down a heat-emitting source (i.e. an electronic component) therein.
  • a heat-emitting source i.e. an electronic component
  • the casing 9 should have an enough inner space for accommodation of the conventional advection-type fan 8 .
  • the inner space should be in a predetermined height equal to or larger than a sum total height of the bottom plate 811 , lateral walls 812 and cover plate 813 .
  • the thickness of the casing 9 should also be considered.
  • the casing 9 will have a height (H) that is the thickness of the casing 9 plus the sum total height of the bottom plate 811 , lateral walls 812 and cover plate 813 , all included. This leads to a thick casing 9 and the overall volume of the casing 9 can not be reduced.
  • the invention discloses a cooling system equipped with an advection-type fan is disclosed.
  • the cooling system includes a casing and an advection-type fan.
  • the casing has a compartment receiving a heat-emitting source or a heat-conducting element.
  • the casing further includes two radial air-guiding openings communicating with the compartment.
  • the advection-type fan has a frame disposed in the compartment.
  • the frame has an air-guiding lateral wall defining a radial air channel.
  • the frame has a radial air inlet and a radial air outlet. Both the radial air inlet and the radial air outlet communicate with the radial air channel.
  • the radial air inlet and the radial air outlet face the two radial air-guiding openings of the casing respectively.
  • the radial air channel receives an impeller that causes air advection to dissipate the heat of the heat-emitting source or the heat-conducting element.
  • the frame has two sides in an axial direction of the impeller that are completely laid open.
  • the invention discloses a cooling system equipped with an advection-type fan.
  • the cooling system includes a casing and an advection-type fan.
  • the casing has a compartment receiving a heat-emitting source or a heat-conducting element.
  • the casing further comprises a radial air-guiding opening communicating with the compartment.
  • the advection-type fan has a frame disposed in the compartment.
  • the frame has an air-guiding lateral wall defining a radial air channel.
  • the frame has a radial air inlet and a radial air outlet. Both the radial air inlet and the radial air outlet communicate with the radial air channel.
  • the radial air channel receives an impeller that causes air advection to dissipate the heat of the heat-emitting source or the heat-conducting element.
  • the frame has two sides in an axial direction of the impeller that are completely laid open.
  • the invention discloses a cooling system equipped with an advection-type fan.
  • the cooling system includes a casing and an advection-type fan.
  • the casing has a compartment receiving a heat-emitting source or a heat-conducting element.
  • the casing further comprises a radial air-guiding opening communicating with the compartment.
  • the compartment forms a radial air channel communicating with the radial air-guiding opening.
  • the advection-type fan has a base disposed in the radial air channel and coupled with an impeller. The impeller causes air advection to dissipate the heat of the heat-emitting source or the heat-conducting element.
  • FIG. 1 shows a diagram of a cooling system equipped with a conventional advection-type fan.
  • FIG. 2 shows an exploded diagram of a cooling system equipped with an advection-type fan according to a first embodiment of the invention.
  • FIG. 3 shows a top cross-sectional diagram of the cooling system of the first embodiment of the invention.
  • FIG. 4 shows an exploded diagram of the advection-type fan of the first embodiment of the invention.
  • FIG. 5 shows a side cross-sectional diagram of the cooling system of the first embodiment observed at line 5 - 5 in FIG. 3 .
  • FIG. 6 shows an exploded diagram of a cooling system equipped with an advection-type fan according to a second embodiment of the invention.
  • FIG. 7 shows an exploded diagram of a cooling system equipped with an advection-type fan according to a third embodiment of the invention.
  • a cooling system equipped with an advection-type fan comprises a casing 1 and an advection-type fan 2 according to a first embodiment of the invention.
  • the casing 1 may be a housing of an electronic device that generates heat during operation thereof, such as a Personal Digital Assistant (PDA), mobile phone, computer or others.
  • PDA Personal Digital Assistant
  • the advection-type fan 2 is disposed in the casing 1 to provide a predetermined cooling function.
  • the casing 1 comprises a compartment 11 having one or both of a heat-emitting source 111 and a heat-conducting element 112 .
  • the compartment 11 may only have the heat-emitting source 111 .
  • the advection-type fan 2 can operate to dissipate the heat of the heat-emitting source 111 .
  • the compartment 11 may have both the heat-emitting source 111 and the heat-conducting element 112 .
  • the advection-type fan 2 can operate to dissipate the heat of the heat-emitting source 111 via the heat-conducting element 112 .
  • the casing 1 further comprises two radial air-guiding openings 12 communicating with the compartment 11 , with at least one fixing portion 13 arranged therebetween.
  • the at least one fixing portion 13 can be of any structure on which the advection-type fan 2 is fixed.
  • the at least one fixing portion 13 can be of a structure that allows the advection-type fan 2 to be fixed thereon by ways of fastening, screwing, soldering or adhesion.
  • the casing 1 further comprises a bottom plate 1 a having a plurality of side walls 1 b on a periphery thereof, with the side walls 1 b connected to a cover plate 1 c facing the bottom plate 1 a.
  • the bottom plate 1 a, side walls 1 b and cover plate 1 c may jointly form the casing 1 .
  • the two radial air-guiding openings 12 are arranged on two adjacent side walls 1 b of the casing 1 .
  • the compartment 11 has both the heat-emitting source 111 and the heat-conducting element 112 .
  • the heat-conducting element 112 consists of a cooling fin module 112 a and a cooling plate 112 b, with the cooling fin module 112 a disposed at one radial air-guiding opening 12 .
  • the cooling plate 112 b has one end connected to the cooling fin module 112 a and the other end connected to the heat-emitting source 111 .
  • the at least one fixing portion 13 of the casing 1 is implemented as two engaging grooves. One engaging groove is arranged on an inner wall of one side wall 1 b and the other engaging groove is arranged on a face of a fixing board 14 disposed in the compartment 11 .
  • the advection-type fan 2 comprises a frame 21 disposed in the compartment 11 and fixed on the at least one fixing portion 13 .
  • the frame 21 has an air-guiding lateral wall 211 that defines a radial air channel 212 .
  • the air-guiding lateral wall 211 has a radial air inlet 213 and a radial air outlet 214 , with both the radial air inlet 213 and the radial air outlet 214 communicating with the radial air channel 212 .
  • the radial air inlet 213 and the radial air outlet 214 face the two radial air-guiding openings 12 of the casing 1 , respectively.
  • An impeller 22 may be rotatably disposed in the radial air channel 212 .
  • the impeller 22 may have a plurality of vanes 221 that can drive the air to cause air advection.
  • the frame 21 has two sides in an axial direction L that are completely laid open.
  • the frame 21 of the advection-type fan 2 has a base 23 disposed therein.
  • the base 23 is connected to the air-guiding lateral wall 211 via a plurality of connection members 231 . Further, the base 23 has a shaft-coupling portion 232 to which the impeller 22 is rotatably connected.
  • the base 23 has a driving unit 24 that can drive the impeller 22 to rotate.
  • the driving unit 24 may consist of components such as a coil, a circuit board and so on.
  • the driving unit 24 drives the impeller 22 to rotate based on alternating magnetic fields (which are generated under a permanent magnet of the impeller 22 ), so it is not described herein again.
  • the air-guiding lateral wall 211 of the frame 21 has two engaged protrusions 25 .
  • the engaged protrusions 25 can be engaged in the engaging grooves respectively. This allows the advection-type fan 2 to be securely coupled in the compartment 11 of the casing 1 and provides easy assembly and disassembly of the advection-type fan 2 .
  • the bottom plate 1 a is spaced from the cover plate 1 c by a distance (D), and the air-guiding lateral wall 211 of the advection-type fan 2 has an axial height (H) in the axial direction L of the impeller 22 .
  • the axial height (H) of the advection-type fan 2 is preferably equal to the distance (D) such that no gap is presented between the air-guiding lateral wall 211 and the bottom plate 1 a and cover plate 1 c.
  • a sealing element 26 such as a silicon gel or rubber can be disposed between the air-guiding lateral wall 211 and the bottom plate 1 a, and between the air-guiding lateral wall 211 and the cover plate 1 c.
  • the sealing element 26 can be disposed at one side of the air-guiding lateral wall 211 that faces the bottom plate 1 a or the cover plate 1 c, or disposed at both sides of the air-guiding lateral wall 211 that face the bottom plate 1 a and the cover plate 1 c.
  • the bottom plate 1 a and the cover plate 1 c are used to close the compartment 11 of the casing 1 so that the radial air channel 212 can only be accessed via the two radial air-guiding openings 12 .
  • the bottom plate 1 a and the cover plate 1 c are preferably disposed in the axial direction L of the impeller 22 so as to cover the rotation range of the impeller 22 .
  • the driving unit 24 of the advection-type fan 2 can drive the impeller 22 to rotate once the heat-emitting source 111 (which is an electronic component in the electronic device) is overheated during operation of the electronic device. Therefore, the impeller 22 will draw air into the radial air channel 212 via one radial air-guiding opening 12 and the radial air inlet 213 , and then expels air from the radial air channel 212 via the other radial air-guiding opening 12 and the radial air outlet 214 .
  • the driven air can dissipate the heat of the heat-conducting element 112 generated by and delivered from the heat-emitting source 111 , ensuring the normal operation of the cooling system equipped with the advection-type fan 2 . Thus, longer service life of the cooling system is achieved.
  • the cooling system of the invention is characterized as follows.
  • the overall height of the casing 1 can be reduced. This is because that the frame 21 of the advection-type fan 2 merely consists of the air-guiding lateral wall 211 , and two sides of the advection-type fan 2 in the axial direction L are completely laid open. In such an arrangement, the advection-type fan 2 does not need to arrange the bottom plate 811 and the cover plate 813 on two sides thereof as required by the conventional housing 81 ( FIG. 1 ). As an advantage, the height of the compartment 11 can be designed in a smaller value fitted to the axial height (H) of the air-guiding lateral wall 211 .
  • the radial air channel 212 of the frame 21 may form a channel structure in the compartment 11 of the casing 1 by simply disposing the advection-type fan 2 in the compartment 11 of the casing 1 . Based on this, the casing 1 does not need to form a channel structure itself, thereby achieving convenient manufacturing and assembly of the casing 1 and reducing the structural complexity of the casing 1 .
  • a cooling system equipped with an advection-type fan also includes a casing 3 and an advection-type fan 4 according to a second embodiment of the invention.
  • the advection-type fan 4 is disposed in the casing 3 .
  • the casing 3 of the second embodiment also comprises a bottom plate 3 a, a plurality of side walls 3 b and a cover plate 3 c, with the bottom plate 3 a, side walls 3 b and cover plate 3 c jointly forming a compartment 31 .
  • the compartment 31 only has a heat-emitting source 311 .
  • the casing 3 has one radial air-guiding opening 32 on one side wall 3 b thereof, with the radial air-guiding opening 32 communicating with the compartment 31 .
  • the advection-type fan 4 in this embodiment also comprises a frame 41 , an air-guiding lateral wall 411 , a radial air channel 412 , a radial air inlet 413 , a radial air outlet 414 , an impeller 42 , a plurality of vanes 421 , a base 43 , a plurality of connection members 431 , a shaft-coupling portion 432 , a driving unit 44 and a sealing element 46 .
  • the frame 41 in this embodiment is coupled with the casing 3 by way of adhesion and thus, the advection-type fan 4 does not need the engaged protrusions 25 anymore.
  • the advection-type fan 4 has similar structure to the advection-type fan 2 , so it is not described herein again although it has a slightly different shape from the advection-type fan 2 .
  • the cooling system equipped with the advection-type fan 4 differs from that equipped with the advection-type fan 2 (the first embodiment) in that the casing 3 only has one radial air-guiding opening 32 .
  • the casing 3 only has one radial air-guiding opening 32 .
  • one of the radial air inlet 413 and the radial air outlet 414 will face the heat-emitting source 311 while the other one faces the radial air-guiding opening 32 .
  • the radial air outlet 414 will face the radial air-guiding opening 32 when the radial air inlet 413 faces the heat-emitting source 311 or, alternatively, the radial air inlet 413 will face the radial air-guiding opening 32 when the radial air outlet 414 faces the heat-emitting source 311 , depending on the rotation direction of the impeller 42 (clockwise or counterclockwise direction).
  • the casing 3 is a hollow casing having an inner space not completely closed.
  • the casing 3 may have a plurality of vents for ventilation.
  • the impeller 42 of the advection-type fan 4 can draw the heat of the heat-emitting source 311 into the radial air channel 412 via the radial air inlet 413 , then expels the heat from the radial air channel 412 via the radial air outlet 414 .
  • the cooling system of the second embodiment also allows the casing 3 to have a smaller thickness, thereby reducing the volume of the casing 3 .
  • the convenient manufacturing and assembly of the casing 3 are achieved and the structural complexity of the casing 3 is simplified.
  • a cooling system equipped with an advection-type fan also includes a casing 5 and an advection-type fan 6 according to a third embodiment of the invention.
  • the advection-type fan 6 is disposed in the casing 5 .
  • the casing 5 of the third embodiment also comprises a bottom plate 5 a, a plurality of side walls 5 b and a cover plate 5 c, with the bottom plate 5 a, side walls 5 b and cover plate 5 c jointly forming a compartment 51 .
  • the compartment 51 has a heat-emitting source 511 and a heat-conducting element 512 (which consists of a cooling fin module 512 a and a cooling plate 512 b ).
  • the casing 5 has one radial air-guiding opening 52 on one side wall 5 b thereof, with the radial air-guiding opening 52 communicating with the compartment 51 .
  • the compartment 51 is surrounded by a plurality of air-guiding lateral walls 53 to form a radial air channel 54 that communicates with the radial air-guiding opening 52 .
  • the advection-type fan 6 has a base 61 that can be disposed in the radial air channel 54 by ways of adhesion, fastening or screwing.
  • the base 61 is disposed in the radial air channel 54 by way of adhesion.
  • the base 61 has a shaft-coupling portion 611 to which an impeller 62 is rotatably connected.
  • the base 61 further comprises a driving unit 63 that can drive the impeller 62 to rotate.
  • the driving unit 63 may consist of components such as a coil, a circuit board and so on.
  • the driving unit 63 drives the impeller 62 to rotate based on alternating magnetic fields, so it is not described herein again.
  • the third embodiment differs from the first and second embodiments in that the plurality of air-guiding lateral walls 53 can form the radial air channel 54 for the casing 5 . Therefore, the advection-type fan 6 does not need the frame 21 , 41 as required by the advection-type fan 2 , 4 . This allows the base 61 and the impeller 62 to be directly disposed in the compartment 51 of the casing 5 for convenient assembly and simplified structural complexity. In this way, as shown in FIG. 7 , when the heat-emitting source 511 is overheated during operation of the electronic device, the impeller 62 can draw the heat of the heat-emitting source 511 into the radial air channel 54 .
  • the drawn heat flows past the heat-conducting element 512 and is then expelled from the radial air channel 54 via the radial air-guiding opening 52 .
  • the impeller 62 can also draw air into the radial air channel 54 via the radial air-guiding opening 52 , and then guides the air to the heat-emitting source 511 for cooling purpose.
  • the cooling system of the third embodiment also allows the casing 5 to have a smaller thickness, thereby reducing the volume of the casing 5 .
  • the height of the compartment 11 , 31 of the casing 1 , 3 in the first and second embodiments can be designed in a smaller value fitted to the axial height (H) of the air-guiding lateral wall 211 , 411 .
  • the height of the compartment 51 of the casing 5 in the third embodiment can be further reduced to a value fitted to the height of the impeller 62 .
  • the casing 1 , 3 , 5 of the invention can have a smaller height, thus reducing the volume thereof.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
US13/175,986 2011-04-08 2011-07-05 Cooling System Equipped with an Advection-Type Fan Abandoned US20120255713A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW100112256 2011-04-08
TW100112256A TWI426861B (zh) 2011-04-08 2011-04-08 具有水平對流扇之散熱系統

Publications (1)

Publication Number Publication Date
US20120255713A1 true US20120255713A1 (en) 2012-10-11

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ID=45115394

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Application Number Title Priority Date Filing Date
US13/175,986 Abandoned US20120255713A1 (en) 2011-04-08 2011-07-05 Cooling System Equipped with an Advection-Type Fan

Country Status (6)

Country Link
US (1) US20120255713A1 (zh)
EP (1) EP2508759A3 (zh)
JP (1) JP5210421B2 (zh)
KR (1) KR101287430B1 (zh)
CN (2) CN102740658A (zh)
TW (1) TWI426861B (zh)

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US20180124948A1 (en) * 2016-10-27 2018-05-03 Fanuc Corporation Fan attachment structure and fan
US20180226284A1 (en) * 2017-02-06 2018-08-09 Applied Materials, Inc. Systems, apparatus, and methods for a load port door opener
US20220312633A1 (en) * 2021-03-29 2022-09-29 Beijing Xiaomi Mobile Software Co., Ltd. Electronic device
CN116799668A (zh) * 2023-06-21 2023-09-22 国网山东省电力公司巨野县供电公司 一种高效散热电力配电柜

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JP6726897B2 (ja) * 2016-06-20 2020-07-22 パナソニックＩｐマネジメント株式会社 電子機器
CN109362207A (zh) * 2018-10-26 2019-02-19 努比亚技术有限公司 一种风冷散热装置及终端
CN112534142A (zh) * 2020-03-25 2021-03-19 深圳市大疆创新科技有限公司 电子设备及离心风扇
TWI790494B (zh) * 2020-10-26 2023-01-21 宏碁股份有限公司 可攜式電子裝置的散熱系統
CN112739145B (zh) * 2020-11-16 2023-06-30 Oppo（重庆）智能科技有限公司 电子设备
JP7087126B1 (ja) 2021-01-27 2022-06-20 レノボ・シンガポール・プライベート・リミテッド 電子機器
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JP5210421B2 (ja) 2013-06-12
JP2012222338A (ja) 2012-11-12
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TWI426861B (zh) 2014-02-11
CN102740658A (zh) 2012-10-17

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