WO2021188111A1 - Modules de ventilateur à ventilateurs coulissants - Google Patents

Modules de ventilateur à ventilateurs coulissants Download PDF

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Publication number
WO2021188111A1
WO2021188111A1 PCT/US2020/023743 US2020023743W WO2021188111A1 WO 2021188111 A1 WO2021188111 A1 WO 2021188111A1 US 2020023743 W US2020023743 W US 2020023743W WO 2021188111 A1 WO2021188111 A1 WO 2021188111A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
hub
housing
shaft
disposed
Prior art date
Application number
PCT/US2020/023743
Other languages
English (en)
Inventor
Kuan Yu Chen
Ting-Huei Liao
Original Assignee
Hewlett-Packard Development Company, L.P.
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 Hewlett-Packard Development Company, L.P. filed Critical Hewlett-Packard Development Company, L.P.
Priority to PCT/US2020/023743 priority Critical patent/WO2021188111A1/fr
Publication of WO2021188111A1 publication Critical patent/WO2021188111A1/fr

Links

Classifications

    • 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
    • G06F1/203—Cooling means for portable computers, e.g. for laptops
    • 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
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1616—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • 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
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1675—Miscellaneous details related to the relative movement between the different enclosures or enclosure parts
    • G06F1/1681—Details related solely to hinges

Definitions

  • Electronic devices may include electronic components such as processors, memory, graphics products, and other integrated circuits (ICs) that may generate heat.
  • the amount of heat generated by such electronic components may be increasing significantly over time due to the increase in the processing speed and/or enhancement of versatility and functionality.
  • the electronic components can be heat-sensitive. The heat may cause malfunction or physical damage to the electronic components.
  • FIG. 1 A illustrates a cross sectional side view of an example fan module, depicting a first fan and a second fan separated from each other via decompression of an elastic member;
  • FIG. 1 B illustrates a cross sectional side view of the example fan module of FIG. 1 A, depicting the second fan at least partially coincide with the first fan via compression of the elastic member;
  • FIG. 2A illustrates a perspective view of an example shaft of FIG. 1 A, depicting a plug body and a stopper member;
  • FIG. 2B illustrates a side view of an example elastic member of FIG. 1 A, to compressively connect the first fan and the second fan;
  • FIG. 2C illustrates a perspective view of the example elastic member of FIG. 2B, depicting additional features
  • FIG. 3A illustrates a perspective view of an example fan module, depicting a second fan slidably connected to a first fan along an axial direction; [0009] FIG. 3B illustrates an exploded view of the example fan module of FIG.
  • FIG. 3C illustrates a cross sectional side view of the example fan module of FIG. 3B, depicting a second housing to drive the second fan to move towards the first fan in the axial direction via compression of an elastic member;
  • FIG. 3D illustrates a cross sectional side view of the example fan module of FIG. 3B, depicting the second housing to drive the second fan to move away from the first fan in the axial direction via decompression of the elastic member;
  • FIG. 4A illustrates a partial cut-away side view of an example electronic device, depicting a second fan at least partially coincide with a first fan when a display housing is pivoted to a closed position;
  • FIG. 4B illustrates a partial cut-away side view of the example electronic device of FIG. 4A, depicting the second fan separated from the first fan when the display housing is pivoted to an open position.
  • Electronic devices may generate heat during operation, which can affect the operation efficiency.
  • electronic devices may be provided with heat dissipation modules (also referred to as fan modules) to assist the dissipation of heat out of the electronic devices.
  • Example heat dissipation modules may include heat spreaders, fans, and the like. Fans may be used to dissipate the heat out of the electronic devices.
  • the active air flow generated by the fan may cause convection between the interior and the exterior of the electronic device, thereby reducing the temperature of the interior of the electronic devices.
  • the thermal convection on such electronic devices may be limited due to available free space in the interior of the electronic devices for such heat dissipation modules.
  • a cooling performance of the electronic devices may depend on a fan or blower size, i.e., a thicker fan may have a higher performance.
  • a fan or blower with relatively high static pressure may be effective at forcing air through restricted spaces, such as system gaps or heat exchangers.
  • the amount of static pressure may depend on the fan thickness.
  • Examples described herein may provide an effective heat dissipation mechanism through thermal convection using a variable pressurized fan module design that includes multiple fans or blowers.
  • the fan module may include a fixed fan and a variable fan that slides relative to the fixed fan to increase a thickness of the fan module.
  • the variable fan and the fixed fan may be separated from each other in an axial direction to increase the thickness of the fan module and to enhance heat transfer from the interior of the electronic devices.
  • Examples described herein may be implemented in electronic devices having a base housing with variable inner space (i.e., variable thickness), i.e., the inner space varies when a display housing is pivoted to an open position relative to the base housing.
  • variable inner space i.e., variable thickness
  • the second fan may separate from the first fan to increase the thickness of the fan module.
  • a height of the inner space may be relatively decreased, and the second fan may at least partially coincide with the first fan.
  • Examples described herein may extend the lifetime of electronic components of an electronic device, such as liquid crystal display (LCD) panels, light-emitting diodes (LEDs), central processing units (CPUs), batteries, and the like. Examples described herein may resolve hot spot issues in the electronic devices and reduce the risk of battery explosion. Examples described herein may prevent/reduce the electronic components from overheating, thereby reducing skin burning issues of users. Examples described herein may enhance information loading speed and power efficiency. Examples described herein may provide thermal solutions for electronic devices such as a notebook, tablet personal computer (PC), gaming laptop, and the like. [0019] in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present techniques. However, the example apparatuses, devices and systems, may be practiced without these specific details. Reference in the specification to “an example” or similar language means that a particular feature, structure, or characteristic described is included in at least that one example but may not be in other examples.
  • Examples described herein may provide a fan module for an electronic device.
  • the fan module may include a first housing and a second housing slidably disposed on the first housing to form an internal space. Further, the fan module may include a shaft, a first fan, a second fan, and an elastic member disposed in the internal space.
  • the first fan may include a first hub fixedly mounted on the shaft and a plurality of first fan blades disposed on the first hub.
  • the second fan may include a second hub slidably mounted on the shaft and a plurality of second fan blades disposed on the second hub.
  • the elastic member may be connected to the first fan and the second fan to movably connect the second fan relative to the first fan along an axial direction.
  • FIG. 1 A illustrates a cross sectional side view of an example fan module 100, depicting a first fan 104 and a second fan 110 separated from each other via decompression of an elastic member 116.
  • fan module 100 may be disposed in an electronic device for dissipating the heat generated inside the electronic device during operation.
  • Example fan module 100 may be a centrifugal fan.
  • Example electronic device may include a notebook, tablet, personal computer (PC), gaming laptop, or other similar devices. Such electronic devices may include electronic components which may generate heat during operation.
  • Example electronic components may include, but not limited to, a CPU, a graphics processor, a memory element, a display panel, a printed circuit board, means for wireless data exchange, sensors, and/or any other heat generating components.
  • Fan module 100 may dissipate heat from an interior of such electronic devices. [0022] in one example, fan module 100 may include a shaft 102, and first fan
  • First fan 104 may include a first hub 106 and a plurality of first fan blades 108 disposed on first hub 106.
  • First hub 106 may be fixedly mounted on shaft 102.
  • fan module 100 may include a second fan 110 having a second hub 112 and a plurality of second fan blades 114 disposed on second hub 112.
  • second hub 112 may be slidably mounted on shaft 102.
  • plurality of first fan blades 108 and plurality of second fan blades 114 may be circularly disposed on first hub 106 and second hub 112, respectively.
  • first hub 106 and second hub 112 may be movably connected to each other in an axial direction (A) such that first fan 104 and second fan 110 coincide or are separated from each other.
  • plurality of first fan blades 108 disposed on first hub 106 may be misaligned with plurality of second fan blades 114 disposed on second hub 112.
  • fan module 100 may include an elastic member 116 coupled to first fan 104 and second fan 110 to support sliding movement of second fan 110 relative to first fan 104 along the axial direction (A).
  • plurality of second fan blades 114 and plurality of first fan blades 108 may be separated from each other in the axial direction (A) via decompression of elastic member 116 to enhance the thickness of fan module 100.
  • plurality of second fan blades 114 may not overlap with plurality of first fan blades 108.
  • FIG. 1B illustrates a cross sectional side view of example fan module
  • fan module 100 may include a restraining structure 152 mounted on shaft 102 to limit the horizontal movement of second fan 110 relative to first fan 104.
  • second fan 110 may move towards first fan 104 in the axial direction (A) via compression of elastic member 116 such that plurality of second fan blades 114 may at least partially coincide with plurality of first fan blades 108.
  • the thickness of fan module 100 may be reduced compared to the thickness of fan module 100 shown in FIG. 1 A.
  • FIG. 2A illustrates a perspective view of example shaft 102 of FIGs. 1A and 1B, depicting a plug body 202 and a stopper member 204.
  • shaft 102 may include plug body 202 formed in an outer circumference of shaft 102 to unrotatably support second fan 110 (e.g., as shown in FIGs. 1A and 1B).
  • shaft 102 may include stopper member 204 disposed at the end of shaft 102 to fixedly hold restraining structure 152.
  • FIG. 2B illustrates a side view of an example elastic member 116 of FIG.
  • FIG. 2C illustrates a perspective view of example elastic member 116 of FIG. 2B, depicting additional features.
  • elastic member 116 may include a third hub 252 and a spring arm 254 extending from third hub 252.
  • Example third hub may be a metal hub.
  • third hub 252 may be mounted on shaft 102 and fixedly connected to second hub 112.
  • third hub 252 may include an opening 256 to unrotatably receive shaft 102.
  • spring arm 254 may extend from third hub 252 and contacts first hub 106 to provide a spring force between first fan 104 and second fan 110.
  • FIG. 3A illustrates a perspective view of an example fan module 300, depicting a second fan 314 slidably connected to a first fan 308 along an axial direction (A).
  • Fan module 300 may include a first housing 302 and a second housing 304 slidably disposed on first housing 302, i.e., that is, second housing 304 may be stretched or shrunk in size relative to first housing 302 in the axial direction “A”.
  • second housing 304 and first housing 302 may form an internal space, i.e., second housing 304 and first housing 302 may have U- shaped appearances and can be disposed relative to each other to form the internal space.
  • fan module 300 may include a shaft 306 disposed in the internal space. Furthermore, fan module 300 may include first fan 308 disposed in the internal space. In one example, first fan 308 may include a first hub 310 fixedly mounted on shaft 306. Further, first fan 308 may include a plurality of first fan blades 312 disposed on first hub 310. In one example, shaft 306 may unrotatably support first fan 308 such that first fan 308 may rotate along with shaft 306. Also, first fan 308 may not be movable relative to shaft 306 in the axial direction (A).
  • fan module 300 may include second fan 314 disposed in the internal space.
  • second fan 314 may include a second hub 316 slidably mounted on shaft 306 and a plurality of second fan blades 318 disposed on second hub 316.
  • shaft 306 may unrotatably support second fan such that second fan 314 may rotate along with shaft 306.
  • shaft 306 may enable movement of second fan 314 relative to first fan 308 along the axial direction
  • fan module 300 may include an elastic member 320 disposed in the internal space and connected to first fan 308 and second fan 314 such that second fan 314 may be movably connected relative to first fan 308 along the axial direction (A). As shown in FIG. 3A, first fan 308, second fan 314, shaft 306, and elastic member 320 may be rotatably connected to first housing 302.
  • FIG. 3B illustrates an exploded view of example fan module 300 of FIG.
  • first hub 310 and second hub 316 may be plastic or metal
  • materials of first fan blades 312 and second fan blades 318 may be plastic or metal.
  • first hub 310 and plurality of first fan blades 312 may be integrally formed by injection molding or casting
  • second hub 316 and plurality of second fan blades 318 may also be integrally formed by injection molding or casting.
  • the hubs and the fan blades may be respectively provided with engaging structures or fastening structures combined correspondingly to be assembled and fixed together by means of engaging or fastening.
  • shaft 306 may be fixedly connected to first fan
  • shaft 306 may be integral with and extends from first hub 310.
  • the elastic member 320 may reserve a side wall that can be insert modeled/bonded with second hub 112.
  • elastic member 320 may include a third hub 352 disposed on a surface of second hub 316 and a spring arm 354 that extends from third hub 352 and contacts first hub 310 to provide the spring force between first fan 308 and second fan 314.
  • second fan 314 may include opening 358 on second hub 316 through which shaft 306 may be unrotatably received.
  • third hub 352 may include an opening 360 through which shaft 306 may be unrotatably received.
  • fan module 300 may include a restraining structure 362 mounted on shaft 306 to limit the horizontal movement of second fan 314 relative to first fan 308.
  • shaft 306 may include stopper member 364 disposed at the end of shaft 306 to fixedly hold restraining structure 362.
  • restraining structure 362 may be a metal O-shaped ring structure that regulates a maximum axial movement of second fan 314 at a certain point during decompression of elastic member 320.
  • shaft 306 may include at least one flat surface or a plug member and is inserted into a similarly shaped bore/opening within second fan 314 and elastic member 320 such that second fan 314 and elastic member 320 rotates along with shaft 306.
  • FIG. 3C illustrates a cross sectional side view of example fan module
  • FIG. 3C depicting second housing 304 to driving second fan 314 to move towards first fan 308 in the axial direction (A) via compression of elastic member 320.
  • similarly named elements of FIG. 3C may be similar in structure and/or function to elements described with respect to FIGs. 3A and 3B. As shown in FIG.
  • second housing 304 when second housing 304 is moved towards first housing 302 (e.g., via applying an external force), a height (H1) of the internal space is relatively reduced, and second housing 304 may drive second fan 314 to move towards first fan 308 in the axial direction (A) via compression of elastic member 320 such that plurality of second fan blades 318 may at least partially coincide with plurality of first fan blades 312 (e.g., the thickness of fan module 300 may be reduced to a minimum).
  • the shaft end may pass out of second housing 304.
  • FIG. 3D illustrates a cross sectional side view of example fan module
  • FIG. 3D depicting second housing 304 driving second fan 314 to move away from first fan 308 in the axial direction (A) via decompression of elastic member 320.
  • similarly named elements of FIG. 3D may be similar in structure and/or function to elements described with respect to FIGs. 3A and 3B.
  • a height (H2) of the internal space is relatively increased, i.e., H2>H1.
  • plurality of second fan blades 318 and plurality of first fan blades 312 may be separated from each other in the axial direction (A) via decompression of elastic member 320 (e.g., the thickness of fan module 300 may be increased to a maximum).
  • FIG. 4A illustrates a partial cut-away side view of an example electronic device 400, depicting a second fan 414 at least partially coincide with a first fan
  • Example electronic device 400 may be a notebook computer, a tablet computer, a convertible device, a personal gaming device, and the like.
  • Example convertible device may refer to a device that can be “convertible” from a laptop mode to a tablet mode.
  • Electronic device 400 may include display housing 402 and a base housing 404 communicatively connected to display housing 402.
  • display housing 402 may be rotatably, detachably, twistably, or externally connected to base housing 404.
  • display housing 402 may be pivotally connected to base housing 404.
  • Display housing 402 may house a display (e.g., a touchscreen display).
  • Example display may include liquid crystal display (LCD), light emitting diode (LED) display, electro-luminescent (EL) display, or the like.
  • Base housing 404 may house a keyboard, touchpad, battery and the like.
  • Electronic device 400 may also be equipped with other components such as a camera, audio/video devices, and the like, depending on the functions of electronic device 400.
  • electronic device 400 may include a fan module 406 disposed in base housing 404.
  • fan module 406 may include first fan 408, having a first hub 410 and a first fan blade 412 disposed on first hub 410.
  • fan module 406 may include second fan 414, having a second hub 416 and a second fan blade 418 disposed on second hub 416.
  • fan module 406 may include a shaft 420 fixedly coupled to first hub 410 and slidably coupled to second hub 416.
  • fan module 406 may include an elastic member 422 connected to first fan 408 and second fan 414.
  • second fan 414 may at least partially coincide with first fan 408 via compression of elastic member 422.
  • second fan 414 may separate from first fan 408 via decompression of elastic member 422 (e.g., as shown in FIG. 4B).
  • FIG. 4B illustrates a partial cut-away side view of example electronic device 400 of FIG. 4A, depicting second fan 414 separated from first fan 408 when display housing 402 is pivoted to an open position.
  • similarly named elements of FIG. 4B may be similar in structure and/or function to elements described with respect to FIG. 4A.
  • base housing 404 may include a first cover 452, and a second cover 454 slidably connected to first cover 452 to form a first internal space 456.
  • second cover 454 may be fixedly connected to first cover 452 at a first end and movably connected to first cover 452 in a vertical direction at a second end. The second end may be opposite to the first end.
  • fan module 406 may include a first housing
  • fan module 406 may include a second housing 460 slidably disposed on first housing 458 and fixedly connected to second cover 454.
  • second housing 460 and first housing 458 may form a second internal space 462.
  • first fan 408, second fan 414, shaft 420, and elastic member 422 may be disposed in second internal space 462 and rotatably coupled to first housing 458.
  • first cover 452 and second cover 454 may move towards each other to reduce the height (e.g., H1 as shown in FIG. 4A) of first internal space 456.
  • second cover 454 may in turn push second housing 460 towards first housing 458 such that a height (e.g., H3 as shown in FIG. 4A) of second internal space 462 is relatively reduced.
  • second housing 460 and second cover 454 may compress elastic member 422 to move second fan 414 towards first fan 408 in the axial direction (A) during closing of display housing 402 (e.g., as shown in FIG. 4A).
  • first cover 452 and second cover 454 may move away from each other (e.g., at the second end) to increase a height (e.g., H2 as shown in FIG. 4B) of first internal space 456.
  • the height H2 is greater than H1.
  • a height H4 of second internal space 462 is relatively increased.
  • the height H4 is greater than H3.
  • second housing 460 and second cover 454 may enable decompression of elastic member 422 to move second fan 414 away from first fan 408 in the axial direction (A) during opening of display housing 402.
  • electronic device 400 may also include a motor connected to first hub 410.
  • Example motor may be a three-phase motor disposed outside fan module 406, and a rotor of the motor may penetrate first housing 458 in the axial direction (A) and may be connected to first hub 410.
  • the motor may drive first hub 410 and second hub 416 to rotate via shaft 420.
  • second fan 414 may be moved towards or away from first fan 408 automatically, for instance, by opening and closing display housing 402 with respect to base housing 404 of electronic device 400.
  • first fan blade 412 and second fan blade 418 may be either separated from each other to achieve effects of large air volume, great wind pressure, and low noise, or made to coincide with each other to meet the demand for thinness.
  • based on means “based at least in part on.”
  • a feature that is described as based on some stimulus can be based on the stimulus or a combination of stimuli including the stimulus.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Dans un exemple, un module de ventilateur peut comprendre un arbre, et un premier ventilateur, ayant un premier moyeu et une pluralité de premières pales de ventilateur disposées sur le premier moyeu. Le premier moyeu peut être monté fixe sur l'arbre. En outre, le module de ventilateur peut comprendre un second ventilateur, ayant un second moyeu et une pluralité de secondes pales de ventilateur disposées sur le second moyeu. Le second moyeu peut être monté de manière coulissante sur l'arbre. En outre, le module de ventilateur peut comprendre un élément élastique couplé au premier ventilateur et au second ventilateur pour supporter le mouvement coulissant du second ventilateur par rapport au premier ventilateur le long d'une direction axiale.
PCT/US2020/023743 2020-03-20 2020-03-20 Modules de ventilateur à ventilateurs coulissants WO2021188111A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2020/023743 WO2021188111A1 (fr) 2020-03-20 2020-03-20 Modules de ventilateur à ventilateurs coulissants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2020/023743 WO2021188111A1 (fr) 2020-03-20 2020-03-20 Modules de ventilateur à ventilateurs coulissants

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WO2021188111A1 true WO2021188111A1 (fr) 2021-09-23

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PCT/US2020/023743 WO2021188111A1 (fr) 2020-03-20 2020-03-20 Modules de ventilateur à ventilateurs coulissants

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116292390A (zh) * 2023-05-15 2023-06-23 合肥联宝信息技术有限公司 电子设备及其风扇

Citations (5)

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Publication number Priority date Publication date Assignee Title
CN204331613U (zh) * 2014-12-18 2015-05-13 合肥联宝信息技术有限公司 一种风扇组件
CN105511549A (zh) * 2014-09-22 2016-04-20 联想(北京)有限公司 电子设备
US9410557B2 (en) * 2013-01-07 2016-08-09 Acer Incorporated Cooling fan with variable blade surface area
US10517190B2 (en) * 2016-06-17 2019-12-24 Asustek Computer Inc. Electronic device and control method thereof
US20200004303A1 (en) * 2018-07-02 2020-01-02 Acer Incorporated Heat dissipation module

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9410557B2 (en) * 2013-01-07 2016-08-09 Acer Incorporated Cooling fan with variable blade surface area
CN105511549A (zh) * 2014-09-22 2016-04-20 联想(北京)有限公司 电子设备
CN204331613U (zh) * 2014-12-18 2015-05-13 合肥联宝信息技术有限公司 一种风扇组件
US10517190B2 (en) * 2016-06-17 2019-12-24 Asustek Computer Inc. Electronic device and control method thereof
US20200004303A1 (en) * 2018-07-02 2020-01-02 Acer Incorporated Heat dissipation module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116292390A (zh) * 2023-05-15 2023-06-23 合肥联宝信息技术有限公司 电子设备及其风扇
CN116292390B (zh) * 2023-05-15 2023-10-17 合肥联宝信息技术有限公司 电子设备及其风扇

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