US20060147322A1 - Heat dissipating device in a fan - Google Patents
Heat dissipating device in a fan Download PDFInfo
- Publication number
- US20060147322A1 US20060147322A1 US11/028,199 US2819905A US2006147322A1 US 20060147322 A1 US20060147322 A1 US 20060147322A1 US 2819905 A US2819905 A US 2819905A US 2006147322 A1 US2006147322 A1 US 2006147322A1
- Authority
- US
- United States
- Prior art keywords
- fan
- fan blade
- hub
- base
- heat dissipating
- 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
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Classifications
-
- 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
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
Definitions
- the present invention is related to a heat dissipating device in a fan and particularly to a fan in which a support base incorporated with size and configuration of a hub such that once the fluid is driven to move, a part of the fluid passes through a heat generation object and another part of the fluid is guided into the hub to cool the motor received in the hub effectively.
- a conventional fan assembly includes a fan frame 11 and a hub 12 .
- the fan frame 11 has a support base 111 inside with a hollow axial barrel 112 .
- the axial barrel 112 is attached with a bearing 113 inside and a stator 13 outside such that the stator 13 can be located at the support base 111 .
- the hub 12 is a shield member with a closed end and an open end with a shield cover 14 inside.
- the shield cover 14 has a closed end and an open end too and an annular rotor 15 is attached to the inner side of the shield cover 14 .
- the hub 12 provides a plurality of radial shaped fan blades 121 .
- a spindle 16 connects with the hub 12 and the shield cover 14 at an end thereof and passes through the bearing 113 at another end thereof to allow the hub 12 and the shield cover 14 movably connect with the support base 111 .
- the hub 12 and the shield cover 14 are driven to rotate with fan blades 121 due to change of phase such that fluid moves to cool the heat dissipation object.
- an object of the present invention is to provide a heat dissipating device in a fan with which a support base is incorporated with size and configuration of a hub such that once fluid is driven by the fan to move, a part of the fluid passes through a heat generation object and another part of the fluid is guided into the hub to cool the motor received in the hub effectively.
- Another object of the present invention is to provide a heat dissipating device in a fan with which air current created by the fluid directed into the fan blade hub can decrease swinging of the fan.
- the heat dissipating device in a fan includes a fan blade assembly with a fan blade hub, a fan base attached to the fan blade assembly and a motor unit attached to the fan base.
- the fan base has at least a pillow part and is formed with an air opening and a flow passage corresponding to the fan blade hub such that part of fluid driven by the fan can be guided into the fan blade hub to cool the motor unit received therein so as to prolong life span of the entire fan.
- FIG. 1 is sectional view of a conventional heat dissipation device of a fan
- FIG. 2 is a sectional view of a preferred embodiment of a heat dissipating device in a fan according to the present invention
- FIG. 3 is a sectional view of another preferred embodiment of a heat dissipating device in a fan according to the present invention.
- FIG. 4 is a top view of FIG. 2 ;
- FIG. 5 is a top view of FIG. 3 ;
- FIG. 6 is another top view of FIG. 3 ;
- FIG. 7 is a further top view of FIG. 3 .
- a preferred embodiment of a heat dissipating device in a fan includes a fan blade assembly 10 , a motor unit 20 and a fan base 30 .
- the fan blade assembly 10 is composed of a fan blade hub 11 , a shaft 12 , a motor case 13 and a magnetic strip 15 .
- the shaft 12 is disposed at a shaft seat 111 , which is at central bottom of the fan blade hub 11 .
- the motor case 13 is disposed at the inner wall surface of the fan blade hub 11 and the magnetic strip 15 is located at the inner wall surface of motor case 15 .
- the motor unit 20 is attached to the fan blade seat 30 and is composed of an insulation frame 21 , silicone steel sheets 22 , a circuit board 23 and a coil 24 .
- the silicone steel sheets 22 are provided at the outer side of the insulation frame 21 and surround the insulation frame 21 with the coil 24 .
- the fan seat 30 has a central hollow axial seat 31 and the circuit board 23 is disposed between the bottom of the insulation frame 21 and the axial seat 31 .
- the shaft 12 is received in a chamber formed in the axial seat 31 and a bearing 32 is disposed between the shaft 12 and axial seat 31 and fits with the shaft 12 such that the shaft 12 can rotate with being supported by the bearing 32 .
- An oil ring R is provided between the bearing 32 and the fan blade hub 11 .
- the axial seat 31 has a projection part 311 and an engaging part 312 .
- the shaft 12 has a circular end free from connecting with the fan blade hub 11 and the circular end engages with a retaining ring 14 .
- the projection part 311 interferes with the retaining ring 14 to prevent the shaft 12 from moving away the axial seat 31 .
- the fan blade hub 11 at least has a pillow part 33 such as a pillow part shown in FIG. 2 , a plurality of pillow parts shown in FIGS. 3, 5 and 6 and the periphery of the fan base 30 being surrounded with pillow part 33 as shown in FIG. 7 .
- the respect pillow part 33 is formed with an air opening 34 and a passage corresponding to the fan blade hub 11 such that part of fluid driven by the fan can be guided into the fan blade hub 11 to cool a motor received in the fan blade hub 11 can be cooled completely. In this way, not only life span of the entire fan can extended but also swinging of the fan can decrease due to the fluid flowing toward the fan blade hub 11 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A heat dissipating device in a fan includes a fan blade assembly with a fan blade hub, a fan base attached to the fan blade assembly and a motor unit attached to the fan base. The fan base has at least a pillow part and is formed with an air opening and a flow passage corresponding to the fan blade hub such that part of fluid driven by the fan can be guided into the fan blade hub to cool the motor unit received therein so as to prolong life span of the entire fan.
Description
- 1. Field of Invention
- The present invention is related to a heat dissipating device in a fan and particularly to a fan in which a support base incorporated with size and configuration of a hub such that once the fluid is driven to move, a part of the fluid passes through a heat generation object and another part of the fluid is guided into the hub to cool the motor received in the hub effectively.
- 2. Brief Description of Related Art
- Referring to
FIG. 1 , a conventional fan assembly includes afan frame 11 and ahub 12. Thefan frame 11 has asupport base 111 inside with a hollowaxial barrel 112. Theaxial barrel 112 is attached with abearing 113 inside and astator 13 outside such that thestator 13 can be located at thesupport base 111. Thehub 12 is a shield member with a closed end and an open end with ashield cover 14 inside. Theshield cover 14 has a closed end and an open end too and anannular rotor 15 is attached to the inner side of theshield cover 14. Thehub 12 provides a plurality of radialshaped fan blades 121. Aspindle 16 connects with thehub 12 and theshield cover 14 at an end thereof and passes through thebearing 113 at another end thereof to allow thehub 12 and theshield cover 14 movably connect with thesupport base 111. When thestator 13 and therotor 15 are magnetized, thehub 12 and theshield cover 14 are driven to rotate withfan blades 121 due to change of phase such that fluid moves to cool the heat dissipation object. - However, all the
fluid 13 moved by the conventional fan only passes through the heat generation object (not shown) but heat can be generated between thestator 13 and therotor 15 hefan blades 121. Heat exchange rate between the preceding heat and the outside air is low due to theshield cover 14 being completely enclosed in thehub 12 and it results in a great deal part of the heat stays in theshield cover 14 not only to decrease life span of the fan itself but also to increase heat of the entire system. - Accordingly, an object of the present invention is to provide a heat dissipating device in a fan with which a support base is incorporated with size and configuration of a hub such that once fluid is driven by the fan to move, a part of the fluid passes through a heat generation object and another part of the fluid is guided into the hub to cool the motor received in the hub effectively.
- Another object of the present invention is to provide a heat dissipating device in a fan with which air current created by the fluid directed into the fan blade hub can decrease swinging of the fan.
- In order to achieve the preceding objects, the heat dissipating device in a fan according to the present invention includes a fan blade assembly with a fan blade hub, a fan base attached to the fan blade assembly and a motor unit attached to the fan base. The fan base has at least a pillow part and is formed with an air opening and a flow passage corresponding to the fan blade hub such that part of fluid driven by the fan can be guided into the fan blade hub to cool the motor unit received therein so as to prolong life span of the entire fan.
- The detail structure, the applied principle, the function and the effectiveness of the present invention can be more fully understood with reference to the following description and accompanying drawings, in which:
-
FIG. 1 is sectional view of a conventional heat dissipation device of a fan; -
FIG. 2 is a sectional view of a preferred embodiment of a heat dissipating device in a fan according to the present invention; -
FIG. 3 is a sectional view of another preferred embodiment of a heat dissipating device in a fan according to the present invention; -
FIG. 4 is a top view ofFIG. 2 ; -
FIG. 5 is a top view ofFIG. 3 ; -
FIG. 6 is another top view ofFIG. 3 ; and -
FIG. 7 is a further top view ofFIG. 3 . - Referring to
FIG. 2 , a preferred embodiment of a heat dissipating device in a fan according to the present invention includes afan blade assembly 10, amotor unit 20 and afan base 30. Thefan blade assembly 10 is composed of afan blade hub 11, ashaft 12, amotor case 13 and amagnetic strip 15. Theshaft 12 is disposed at ashaft seat 111, which is at central bottom of thefan blade hub 11. Themotor case 13 is disposed at the inner wall surface of thefan blade hub 11 and themagnetic strip 15 is located at the inner wall surface ofmotor case 15. - The
motor unit 20 is attached to thefan blade seat 30 and is composed of aninsulation frame 21,silicone steel sheets 22, acircuit board 23 and acoil 24. Thesilicone steel sheets 22 are provided at the outer side of theinsulation frame 21 and surround theinsulation frame 21 with thecoil 24. Thefan seat 30 has a central hollowaxial seat 31 and thecircuit board 23 is disposed between the bottom of theinsulation frame 21 and theaxial seat 31. Theshaft 12 is received in a chamber formed in theaxial seat 31 and abearing 32 is disposed between theshaft 12 andaxial seat 31 and fits with theshaft 12 such that theshaft 12 can rotate with being supported by thebearing 32. An oil ring R is provided between thebearing 32 and thefan blade hub 11. - The
axial seat 31 has aprojection part 311 and anengaging part 312. Theshaft 12 has a circular end free from connecting with thefan blade hub 11 and the circular end engages with aretaining ring 14. Theprojection part 311 interferes with theretaining ring 14 to prevent theshaft 12 from moving away theaxial seat 31. Thefan blade hub 11 at least has apillow part 33 such as a pillow part shown inFIG. 2 , a plurality of pillow parts shown inFIGS. 3, 5 and 6 and the periphery of thefan base 30 being surrounded withpillow part 33 as shown inFIG. 7 . Therespect pillow part 33 is formed with anair opening 34 and a passage corresponding to thefan blade hub 11 such that part of fluid driven by the fan can be guided into thefan blade hub 11 to cool a motor received in thefan blade hub 11 can be cooled completely. In this way, not only life span of the entire fan can extended but also swinging of the fan can decrease due to the fluid flowing toward thefan blade hub 11. - While the invention has been described with referencing to the preferred embodiments thereof, it is to be understood that modifications or variations may be easily made without departing from the spirit of this invention, which is defined by the appended claims.
Claims (1)
1. A heat dissipating device in a fan, comprising:
a fan blade assembly, providing a fan blade hub;
a fan base, being attached to the fan blade assembly; and
a motor unit, being received in the fan base;
characterized in that the fan base at least has a pillow part and the pillow part is formed an air opening and a flow passage corresponding to the fan blade hub such that part of fluid driven by the fan can be guided into the fan blade hub to cool the entire motor unit so as to prolong life span of the entire fan.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/028,199 US20060147322A1 (en) | 2005-01-04 | 2005-01-04 | Heat dissipating device in a fan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/028,199 US20060147322A1 (en) | 2005-01-04 | 2005-01-04 | Heat dissipating device in a fan |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060147322A1 true US20060147322A1 (en) | 2006-07-06 |
Family
ID=36640603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/028,199 Abandoned US20060147322A1 (en) | 2005-01-04 | 2005-01-04 | Heat dissipating device in a fan |
Country Status (1)
Country | Link |
---|---|
US (1) | US20060147322A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060147321A1 (en) * | 2005-01-04 | 2006-07-06 | Asia Vital Component Co., Ltd. | Radiation device of a fan |
US20100158713A1 (en) * | 2007-09-21 | 2010-06-24 | Mitsubishi Heavy Industries, Ltd. | Fan motor |
US20120195776A1 (en) * | 2009-07-18 | 2012-08-02 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Fan comprising an electronically commutated drive motor |
US20130022479A1 (en) * | 2011-07-22 | 2013-01-24 | Oliver Haaf | Axial Fan With Additional Flow Channel |
US20140003935A1 (en) * | 2012-06-29 | 2014-01-02 | Shih-Chieh Lin | Cooling fan structure |
US20180209438A1 (en) * | 2015-07-09 | 2018-07-26 | Xcelaero Corporation | Compact axial fan |
CN109424564A (en) * | 2017-09-04 | 2019-03-05 | 建准电机工业股份有限公司 | Radiating structure of ceiling fan |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2397171A (en) * | 1943-12-06 | 1946-03-26 | Del Conveyor & Mfg Company | Fan and motor mounting |
US4400140A (en) * | 1977-08-11 | 1983-08-23 | Papst Motoren Kg | Compact fan |
US20060280625A1 (en) * | 2003-04-02 | 2006-12-14 | Valeo Systemes D'essuyage | Ventilating Device |
-
2005
- 2005-01-04 US US11/028,199 patent/US20060147322A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2397171A (en) * | 1943-12-06 | 1946-03-26 | Del Conveyor & Mfg Company | Fan and motor mounting |
US4400140A (en) * | 1977-08-11 | 1983-08-23 | Papst Motoren Kg | Compact fan |
US20060280625A1 (en) * | 2003-04-02 | 2006-12-14 | Valeo Systemes D'essuyage | Ventilating Device |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060147321A1 (en) * | 2005-01-04 | 2006-07-06 | Asia Vital Component Co., Ltd. | Radiation device of a fan |
US20100158713A1 (en) * | 2007-09-21 | 2010-06-24 | Mitsubishi Heavy Industries, Ltd. | Fan motor |
US8057167B2 (en) * | 2007-09-21 | 2011-11-15 | Mitsubishi Heavy Indusries, Ltd. | Fan motor |
US20120195776A1 (en) * | 2009-07-18 | 2012-08-02 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Fan comprising an electronically commutated drive motor |
US20130022479A1 (en) * | 2011-07-22 | 2013-01-24 | Oliver Haaf | Axial Fan With Additional Flow Channel |
US9494162B2 (en) * | 2011-07-22 | 2016-11-15 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Axial fan with additional flow channel |
US20140003935A1 (en) * | 2012-06-29 | 2014-01-02 | Shih-Chieh Lin | Cooling fan structure |
US9057380B2 (en) * | 2012-06-29 | 2015-06-16 | Asia Vital Components Co., Ltd. | Fan having debris entry prevention gap |
US20180209438A1 (en) * | 2015-07-09 | 2018-07-26 | Xcelaero Corporation | Compact axial fan |
US11525456B2 (en) * | 2015-07-09 | 2022-12-13 | Bascom Hunter Technologies, Inc. | Compact axial fan |
CN109424564A (en) * | 2017-09-04 | 2019-03-05 | 建准电机工业股份有限公司 | Radiating structure of ceiling fan |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ASIA VITAL COMPONENT CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, MING-CHE;REEL/FRAME:016148/0570 Effective date: 20041231 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |