US20060045777A1 - Fans and electronic devices utilizing the same - Google Patents
Fans and electronic devices utilizing the same Download PDFInfo
- Publication number
- US20060045777A1 US20060045777A1 US11/214,808 US21480805A US2006045777A1 US 20060045777 A1 US20060045777 A1 US 20060045777A1 US 21480805 A US21480805 A US 21480805A US 2006045777 A1 US2006045777 A1 US 2006045777A1
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- United States
- Prior art keywords
- fan
- frame
- extended portion
- airflow
- disposed
- 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.)
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- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
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- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
- F04D29/547—Ducts having a special shape in order to influence fluid flow
Definitions
- the invention relates to fans, and in particular, to fans for electronic devices.
- airflow outlet/inlet size thereof is increased to raise airflow.
- conventional fans utilize a square frame, as shown in FIG. 1A . Due to limitations of the frame 10 , the extended ramp 11 design of the airflow outlet/inlet cannot be optimized to maximize airflow.
- FIG. 1B is a sectional diagram of the fan frame in FIG. 1A along line a-a.
- FIG. 1B shows an airflow field generated by the fan in FIG. 1A .
- the notation ‘w’ represents the airflow field
- ‘ 13 ’ represents the center line of the fan
- ‘ 1 a ’ represents a heat source.
- the fan is disposed in system 1 , and the heat source la is on the center line 13 .
- the heat source 1 a cannot always be directly on the center line 13 of the fan because other components in the system occupy the same space. In such cases, a new fan of a larger size or with a higher rotational speed is required, raising production costs and generating relatively more noise.
- U.S. Pat. No. 6,386,843 discloses a fan capable of dissipating heat from a plurality of heat sources.
- the fan 20 has a ramp 21 formed on the frame and an extended portion 22 on its side, thereby improving heat dissipation capability.
- the shape of the frame is basically square. Thus, the square frame is not suitable when system space is limited.
- An exemplary embodiment of an electronic device comprises a housing, a heat source, and a fan.
- the housing comprises a fan cavity.
- the heat source is disposed in the housing.
- the fan is disposed in the fan cavity.
- the fan comprises a frame.
- the frame comprises an airflow outlet, an airflow inlet, and a first extended portion.
- the first extended portion is disposed at the airflow outlet or the airflow inlet.
- An inclined angle, an entending direction or a position of the first extended portion is adjusted according to a position or a shape of the fan cavity or the heat source.
- An exemplary embodiment of a fan for dissipating heat from a heat source, comprises a frame and a blade.
- the frame comprises an airflow outlet, an airflow inlet, and a first extended portion.
- the first extended portion is disposed at the airflow outlet or the airflow inlet.
- An inclined angle, an entending direction or a position of the first extended portion is adjusted according to the position of the heat source.
- the blade is disposed on the frame.
- an electronic device comprise a housing, a heat source, and a fan.
- the heat source is disposed in the housing.
- the fan is disposed in the housing.
- the fan comprises a frame with an extended portion near the heat source.
- an electronic device comprise a housing, a plurality of heat sources, and a fan.
- the heat sources are disposed in the housing.
- the fan is disposed in the housing.
- the fan comprises a frame with an extended portion near each heat source. The extended portion is disposed at an airflow inlet or an airflow outlet of the fan.
- an electronic device comprise a housing and a fan, wherein the housing comprises a fan cavity with a fan disposed therein.
- the fan comprises a frame, and the shape of the frame is adjusted according to that of the fan cavity.
- a fan comprise a frame and a blade.
- the frame comprises an airflow outlet, an airflow inlet, a first extended portion, and a second extended portion.
- the first extended portion is disposed at the airflow outlet.
- the second extended portion is disposed at the airflow inlet.
- the blade is disposed on the frame. Inclined angles of the first and the second extended portions are different. Extended depths of the first and the second extended portions are different.
- a fan for dissipating heat from a heat source, comprise a frame and a blade.
- the frame comprises an airflow outlet, an airflow inlet, and a first extended portion.
- the first extended portion is disposed at the airflow outlet.
- An inclined angle or an entending direction of the first extended portion is adjusted according to a position of the heat source.
- the blade is disposed on the frame. Sectional areas of the airflow inlet and the airflow outlet are different. Shapes of the airflow inlet and the airflow outlet are different.
- a fan comprise a frame and a blade.
- the frame comprises an airflow outlet, an airflow inlet, a first extended portion, and a second extended portion.
- the first extended portion is disposed at the airflow outlet.
- the second extended portion is disposed at the airflow inlet.
- the blade is disposed on the frame.
- the frame is circular, oval, equilateral polygonal, scalene polygonal, trapezoidal, sectorial, or irregular shaped.
- FIG. 1A is a three-dimensional diagram of a conventional fan frame.
- FIG. 1B is a sectional diagram of the fan frame in FIG. 1A along line a-a.
- FIG. 2 is a top view of a fan disclosed in U.S. Pat. No. 6,386,843.
- FIG. 3A is a schematic diagram of airflow field related to an embodiment of an electronic device.
- FIG. 3B is a three-dimensional diagram of the fan frame in FIG. 3A .
- FIG. 3C is a sectional diagram of the fan frame in FIG. 3B along line b-b.
- FIG. 4A is a schematic diagram of airflow field related to an embodiment of an electronic device.
- FIG. 4B is a top view of the fan frame in FIG. 4A .
- FIG. 4C is a sectional diagram of the fan frame in FIG. 4B along line c-c.
- FIG. 5 is a top view of an embodiment of a fan.
- FIG. 6 is a diagram of an embodiment of a fan frame.
- FIG. 7A is a schematic diagram of airflow field related to an embodiment of an electronic device.
- FIG. 7B is a top view of the fan in FIG. 7A .
- FIG. 7C is a sectional diagram of the fan frame in FIG. 7B along line d-d.
- FIG. 7D is a sectional diagram of the fan frame in FIG. 7B along line e-e.
- FIG. 7E is a diagram of an embodiment of a fan frame.
- FIG. 7F is a sectional diagram of the fan frame in FIG. 7E along line f-f.
- FIG. 8A is a top view of an embodiment of a fan frame.
- FIG. 8B is a schematic diagram of an embodiment of an electronic device utilizing the fan in FIG. 8A .
- FIG. 3A is a schematic diagram of airflow field related to an embodiment of an electronic device.
- FIG. 3B is a three-dimensional diagram of the fan frame in FIG. 3A .
- FIG. 3C is a sectional diagram of the fan frame in FIG. 3B along line b-b. A stator and a blade are not shown in FIGS. 3 B ⁇ 3 C for simplicity.
- the electronic device 2 comprises a housing 2 a , a plurality of heat sources 2 b and 2 c , and a fan 30 .
- the heat sources 2 b and 2 c and the fan 30 are disposed in the housing 2 a . Due to space limitations, the heat sources 2 b and 2 c are disposed separately.
- the housing 2 a comprises a fan cavity 2 d for accommodating the fan 30 .
- the scope of an airflow field w is modified by adjusting the shape of a frame 31 of the fan for heat dissipation in a limited space.
- the fan 30 is an axial fan with a rectangular frame 31 .
- the frame 31 comprises an airflow outlet 31 b , an airflow inlet 31 c , two extended portions 31 d and 31 e , and a bushing 33 .
- a stator coil 32 is wound at the bushing 33 , and a blade 35 is connected with the bushing 33 through a pivot 34 .
- the extended portion 31 d is disposed at the airflow outlet 31 b .
- the inclined angle of the extended portion 31 d is adjusted according to the relative position of the fan cavity 2 d and the heat sources 2 b and 2 c .
- the airflow field w in FIG. 3A is larger due to the extended portion 31 d.
- the extended portion 31 e is disposed at the airflow outlet 31 c .
- the two extended portions 31 d and 31 e are on the same side.
- the inclined angle of the extended portion 31 e is adjusted according to the position of the fan cavity 2 d for increasing airflow to improve heat dissipation.
- FIG. 3B four positioning holes are formed at the four corners of the frame 31 respectively.
- the frame 31 can be positioned in the electronic device 2 via the four positioning holes.
- the locations of the four positioning holes can be adjusted when necessary.
- the four positioning holes are omitted for simplicity.
- FIG. 4A is a schematic diagram of airflow field related to an embodiment of an electronic device.
- FIG. 4B is a top view of the fan frame in FIG. 4A .
- FIG. 4C is a sectional diagram of the fan frame in FIG. 4B along line c-c. A stator and a blade are not shown in FIGS. 4 B ⁇ 4 C for simplicity.
- the electronic device 3 comprises a housing 3 a , a major heat source 3 b , a minor heat source 3 c , and a fan 40 .
- the heat sources 3 b and 3 c and the fan 40 are disposed in the housing 3 a .
- the fan faces the major heat source 3 b .
- the two heat sources 3 b and 3 c are spaced farther (D>p), the fan 40 has an extended portions with larger inclined angles, and thus the scope of the airflow field w in FIG. 4A is larger.
- the frame 41 of the fan 40 is similar to the previously described frame 31 .
- the frame 41 is rectangular.
- the frame 41 comprises an airflow outlet 41 c , an airflow inlet 41 d , and two extended portions 41 a and 41 b .
- the extended portions 41 a and 41 b are disposed at the airflow outlet 41 c and the airflow inlet 41 d respectively.
- the main difference between this and previously described frames is that the extended portions 41 a and 41 b have different inclined angles ( ⁇ 1 and ⁇ 2 ) and extended depths (d 1 and d 2 ). As shown in FIG.
- the extended depths ( ⁇ 1 and ⁇ 2 ) are distances from the airflow outlet 41 c or the airflow inlet 41 d to the extended portions 41 a or 41 b .
- the inclined angles ( ⁇ 1 and ⁇ 2 ) represent the included angle between the wall of the extended portions and the connected vertical walls.
- the extended portions 41 a and 41 b are formed with different inclined angles ( ⁇ 1 and ⁇ 2 ).
- the airflow outlet 41 c and the airflow inlet 41 d have different sectional areas and shapes, and the center of the blade is not located at the center of the frame.
- the frame design can be modified according to positions and sizes of heat sources and the fan cavity, thus optimizing heat dissipation.
- FIG. 5 is a top view of an embodiment of a fan.
- the fan 50 comprises a frame 51 and a blade 52 , and the frame 51 comprises an extended portion 51 a .
- the main difference between this and previously described frames is described in the following.
- the frame 51 is trapezoidal.
- the extended portion 51 a is formed along the edges of the airflow outlet or the airflow inlet.
- the shapes of the airflow outlet and the airflow inlet are basically sectorial for dissipating heat from separated heat sources.
- FIG. 6 is a diagram of an embodiment of a fan frame.
- the frame 61 comprises an extended portion 61 a on its two sides, thus adjusting the scope of the airflow field to suit various kinds of heat sources.
- FIG. 7A is a schematic diagram of airflow field related to an embodiment of an electronic device.
- FIG. 7B is a top view of the fan in FIG. 7A .
- FIG. 7C is a sectional diagram of the fan frame in FIG. 7B along line d-d.
- FIG. 7D is a sectional diagram of the fan frame in FIG. 7B along line e-e.
- the electronic device 4 comprises a housing 4 a and a plurality of heat sources 4 b and 4 c .
- the heat sources 4 b and 4 c and the fan 70 are disposed in the housing 4 a . Due to space limitations, the heat sources 4 b and 4 c are disposed separately.
- the housing 4 a comprises a fan cavity 4 d on its side for accommodating the fan 70 .
- the airflow inlet and the airflow outlet are not parallel, so the airflow direction is changed.
- the scope of an airflow field w is modified by adjusting the shape of a frame 71 of the fan for heat dissipation in limited space.
- the frame 71 comprises an extended portion 71 a formed at the airflow outlet 71 c and another extended portion 71 b formed at the airflow inlet 71 d .
- the main difference between this and previously described frames is described in the following.
- the frame 71 is oval.
- the inclined angles and depths of the extended portions are adjusted according to the heat sources 4 b and 4 c and the fan cavity 4 d in the housing 4 a , thus changing the scope of the airflow field to suit various kinds of heat sources.
- FIG. 7E is a diagram of an embodiment of a fan frame.
- FIG. 7F is a sectional diagram of the fan frame in FIG. 7E along line f-f.
- the frame 71 of the fan 70 comprises a plurality of segments of different inclined angles. Shapes of any two adjacent segments are different, and axial heights of any two adjacent segments are different.
- the extended portions 71 a and 71 b are disposed at the airflow outlet 71 c .
- the extended portions 71 a and 71 b can comprise a plurality of segments. The distance between each segment and the end of the blade can be different, and height of each segment can be different.
- the scope of the airflow field can be adjusted to suit various kinds of heat sources.
- FIG. 8A is a top view of an embodiment of a fan frame.
- FIG. 8B is a schematic diagram of an embodiment of an electronic device utilizing the fan in FIG. 8A .
- the electronic device 5 comprises a fan cavity 5 a for accommodation of the fan 80 in FIG. 8A .
- the fan cavity 5 a has an irregular shape.
- the shape of the frame 81 is changed to suit the fan cavity 5 a .
- the fan 8 dissipates heat generated by heat sources 5 b , 5 c , and 5 d.
- the fan cavity 5 a in FIG. 8B can be circular, oval, rectangular, trapezoidal, sectorial, equilateral polygonal, scalene polygonal, or irregular shaped, and the shape of the frame 81 can be changed accordingly.
Abstract
Electronic devices and fans thereof are provided. An electronic device comprises a fan cavity and separately disposed heat sources. A fan is disposed in the fan cavity with a frame shaped according to the profile of the fan cavity. The frame also includes an extended portion formed according to the relative position of the fan cavity and separated heat sources, optimizing the heat dissipation.
Description
- The invention relates to fans, and in particular, to fans for electronic devices.
- Typically, when designing an axial fan, airflow outlet/inlet size thereof is increased to raise airflow. Generally, conventional fans utilize a square frame, as shown in
FIG. 1A . Due to limitations of theframe 10, the extendedramp 11 design of the airflow outlet/inlet cannot be optimized to maximize airflow. - Conventionally, the center of the fan is aligned with a heat source to optimize heat dissipation.
FIG. 1B is a sectional diagram of the fan frame inFIG. 1A along line a-a.FIG. 1B shows an airflow field generated by the fan inFIG. 1A . InFIG. 1B , the notation ‘w’ represents the airflow field, ‘13’ represents the center line of the fan, and ‘1 a’ represents a heat source. The fan is disposed insystem 1, and the heat source la is on thecenter line 13. - The heat source 1 a cannot always be directly on the
center line 13 of the fan because other components in the system occupy the same space. In such cases, a new fan of a larger size or with a higher rotational speed is required, raising production costs and generating relatively more noise. - Accordingly, U.S. Pat. No. 6,386,843 discloses a fan capable of dissipating heat from a plurality of heat sources. Referring to
FIG. 2 , thefan 20 has aramp 21 formed on the frame and an extendedportion 22 on its side, thereby improving heat dissipation capability. The shape of the frame is basically square. Thus, the square frame is not suitable when system space is limited. - Fans and electronic devices utilizing the same are provided. An exemplary embodiment of an electronic device comprises a housing, a heat source, and a fan. The housing comprises a fan cavity. The heat source is disposed in the housing. The fan is disposed in the fan cavity. The fan comprises a frame. The frame comprises an airflow outlet, an airflow inlet, and a first extended portion. The first extended portion is disposed at the airflow outlet or the airflow inlet. An inclined angle, an entending direction or a position of the first extended portion is adjusted according to a position or a shape of the fan cavity or the heat source.
- An exemplary embodiment of a fan, for dissipating heat from a heat source, comprises a frame and a blade. The frame comprises an airflow outlet, an airflow inlet, and a first extended portion. The first extended portion is disposed at the airflow outlet or the airflow inlet. An inclined angle, an entending direction or a position of the first extended portion is adjusted according to the position of the heat source. The blade is disposed on the frame.
- Some embodiments of an electronic device comprise a housing, a heat source, and a fan. The heat source is disposed in the housing. The fan is disposed in the housing. The fan comprises a frame with an extended portion near the heat source.
- Some embodiments of an electronic device comprise a housing, a plurality of heat sources, and a fan. The heat sources are disposed in the housing. The fan is disposed in the housing. The fan comprises a frame with an extended portion near each heat source. The extended portion is disposed at an airflow inlet or an airflow outlet of the fan.
- Some embodiments of an electronic device comprise a housing and a fan, wherein the housing comprises a fan cavity with a fan disposed therein. The fan comprises a frame, and the shape of the frame is adjusted according to that of the fan cavity.
- Some embodiments of a fan comprise a frame and a blade. The frame comprises an airflow outlet, an airflow inlet, a first extended portion, and a second extended portion. The first extended portion is disposed at the airflow outlet. The second extended portion is disposed at the airflow inlet. The blade is disposed on the frame. Inclined angles of the first and the second extended portions are different. Extended depths of the first and the second extended portions are different.
- Some embodiments of a fan, for dissipating heat from a heat source, comprise a frame and a blade. The frame comprises an airflow outlet, an airflow inlet, and a first extended portion. The first extended portion is disposed at the airflow outlet. An inclined angle or an entending direction of the first extended portion is adjusted according to a position of the heat source. The blade is disposed on the frame. Sectional areas of the airflow inlet and the airflow outlet are different. Shapes of the airflow inlet and the airflow outlet are different.
- Some embodiments of a fan comprise a frame and a blade. The frame comprises an airflow outlet, an airflow inlet, a first extended portion, and a second extended portion. The first extended portion is disposed at the airflow outlet. The second extended portion is disposed at the airflow inlet. The blade is disposed on the frame. The frame is circular, oval, equilateral polygonal, scalene polygonal, trapezoidal, sectorial, or irregular shaped.
- Fans and electronic devices can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:
-
FIG. 1A is a three-dimensional diagram of a conventional fan frame. -
FIG. 1B is a sectional diagram of the fan frame inFIG. 1A along line a-a. -
FIG. 2 is a top view of a fan disclosed in U.S. Pat. No. 6,386,843. -
FIG. 3A is a schematic diagram of airflow field related to an embodiment of an electronic device. -
FIG. 3B is a three-dimensional diagram of the fan frame inFIG. 3A . -
FIG. 3C is a sectional diagram of the fan frame inFIG. 3B along line b-b. -
FIG. 4A is a schematic diagram of airflow field related to an embodiment of an electronic device. -
FIG. 4B is a top view of the fan frame inFIG. 4A . -
FIG. 4C is a sectional diagram of the fan frame inFIG. 4B along line c-c. -
FIG. 5 is a top view of an embodiment of a fan. -
FIG. 6 is a diagram of an embodiment of a fan frame. -
FIG. 7A is a schematic diagram of airflow field related to an embodiment of an electronic device. -
FIG. 7B is a top view of the fan inFIG. 7A . -
FIG. 7C is a sectional diagram of the fan frame inFIG. 7B along line d-d. -
FIG. 7D is a sectional diagram of the fan frame inFIG. 7B along line e-e. -
FIG. 7E is a diagram of an embodiment of a fan frame. -
FIG. 7F is a sectional diagram of the fan frame inFIG. 7E along line f-f. -
FIG. 8A is a top view of an embodiment of a fan frame. -
FIG. 8B is a schematic diagram of an embodiment of an electronic device utilizing the fan inFIG. 8A . -
FIG. 3A is a schematic diagram of airflow field related to an embodiment of an electronic device.FIG. 3B is a three-dimensional diagram of the fan frame inFIG. 3A .FIG. 3C is a sectional diagram of the fan frame inFIG. 3B along line b-b. A stator and a blade are not shown in FIGS. 3B˜3C for simplicity. - As shown in
FIG. 3A , theelectronic device 2 comprises ahousing 2 a, a plurality ofheat sources fan 30. Theheat sources fan 30 are disposed in thehousing 2 a. Due to space limitations, theheat sources housing 2 a comprises afan cavity 2 d for accommodating thefan 30. The scope of an airflow field w is modified by adjusting the shape of aframe 31 of the fan for heat dissipation in a limited space. - As shown in FIGS. 3A=18 3C, the
fan 30 is an axial fan with arectangular frame 31. Theframe 31 comprises anairflow outlet 31 b, anairflow inlet 31 c, twoextended portions bushing 33. Astator coil 32 is wound at thebushing 33, and ablade 35 is connected with thebushing 33 through apivot 34. Theextended portion 31 d is disposed at theairflow outlet 31 b. The inclined angle of the extendedportion 31 d is adjusted according to the relative position of thefan cavity 2 d and theheat sources FIGS. 1B and 3A , the airflow field w inFIG. 3A is larger due to the extendedportion 31 d. - Referring to
FIGS. 3A and 3D , theextended portion 31 e is disposed at theairflow outlet 31 c. The twoextended portions portion 31 e is adjusted according to the position of thefan cavity 2 d for increasing airflow to improve heat dissipation. - In
FIG. 3B , four positioning holes are formed at the four corners of theframe 31 respectively. Theframe 31 can be positioned in theelectronic device 2 via the four positioning holes. The locations of the four positioning holes can be adjusted when necessary. In the following disclosed embodiments, the four positioning holes are omitted for simplicity. -
FIG. 4A is a schematic diagram of airflow field related to an embodiment of an electronic device.FIG. 4B is a top view of the fan frame inFIG. 4A .FIG. 4C is a sectional diagram of the fan frame inFIG. 4B along line c-c. A stator and a blade are not shown in FIGS. 4B˜4C for simplicity. - As shown in
FIG. 4A , theelectronic device 3 comprises ahousing 3 a, amajor heat source 3 b, aminor heat source 3 c, and afan 40. Theheat sources fan 40 are disposed in thehousing 3 a. The fan faces themajor heat source 3 b. In comparison ofFIGS. 3A and 4A , the twoheat sources fan 40 has an extended portions with larger inclined angles, and thus the scope of the airflow field w inFIG. 4A is larger. - As shown in FIGS. 4B˜4C, the
frame 41 of thefan 40 is similar to the previously describedframe 31. Theframe 41 is rectangular. Theframe 41 comprises anairflow outlet 41 c, anairflow inlet 41 d, and twoextended portions extended portions airflow outlet 41 c and theairflow inlet 41 d respectively. The main difference between this and previously described frames is that theextended portions FIG. 4C , the extended depths (θ1 and θ2) are distances from theairflow outlet 41 c or theairflow inlet 41 d to theextended portions - Referring to
FIG. 4A , theextended portions airflow outlet 41 c and theairflow inlet 41 d have different sectional areas and shapes, and the center of the blade is not located at the center of the frame. The frame design can be modified according to positions and sizes of heat sources and the fan cavity, thus optimizing heat dissipation. -
FIG. 5 is a top view of an embodiment of a fan. Thefan 50 comprises aframe 51 and ablade 52, and theframe 51 comprises anextended portion 51 a. The main difference between this and previously described frames is described in the following. Theframe 51 is trapezoidal. Theextended portion 51 a is formed along the edges of the airflow outlet or the airflow inlet. The shapes of the airflow outlet and the airflow inlet are basically sectorial for dissipating heat from separated heat sources. -
FIG. 6 is a diagram of an embodiment of a fan frame. Theframe 61 comprises anextended portion 61 a on its two sides, thus adjusting the scope of the airflow field to suit various kinds of heat sources. -
FIG. 7A is a schematic diagram of airflow field related to an embodiment of an electronic device.FIG. 7B is a top view of the fan inFIG. 7A .FIG. 7C is a sectional diagram of the fan frame inFIG. 7B along line d-d.FIG. 7D is a sectional diagram of the fan frame inFIG. 7B along line e-e. - As shown in
FIG. 7A , theelectronic device 4 comprises ahousing 4 a and a plurality ofheat sources heat sources fan 70 are disposed in thehousing 4 a. Due to space limitations, theheat sources housing 4 a comprises afan cavity 4 d on its side for accommodating thefan 70. The airflow inlet and the airflow outlet are not parallel, so the airflow direction is changed. The scope of an airflow field w is modified by adjusting the shape of aframe 71 of the fan for heat dissipation in limited space. - As shown in FIGS. 7A˜7D, the
frame 71 comprises anextended portion 71 a formed at theairflow outlet 71 c and anotherextended portion 71 b formed at theairflow inlet 71 d. The main difference between this and previously described frames is described in the following. Theframe 71 is oval. The inclined angles and depths of the extended portions are adjusted according to theheat sources fan cavity 4 d in thehousing 4 a, thus changing the scope of the airflow field to suit various kinds of heat sources. -
FIG. 7E is a diagram of an embodiment of a fan frame.FIG. 7F is a sectional diagram of the fan frame inFIG. 7E along line f-f. As shown inFIGS. 7E and 7F , theframe 71 of thefan 70 comprises a plurality of segments of different inclined angles. Shapes of any two adjacent segments are different, and axial heights of any two adjacent segments are different. Theextended portions airflow outlet 71 c. According to heat dissipation requirements, theextended portions - The shape of the frame can be optimized according to the fan cavity in the system.
FIG. 8A is a top view of an embodiment of a fan frame.FIG. 8B is a schematic diagram of an embodiment of an electronic device utilizing the fan inFIG. 8A . - In
FIG. 8B , the electronic device 5 comprises afan cavity 5 a for accommodation of thefan 80 inFIG. 8A . Thefan cavity 5 a has an irregular shape. By forming anextended portion 81 a on theframe 81, the shape of theframe 81 is changed to suit thefan cavity 5 a. The fan 8 dissipates heat generated byheat sources - The
fan cavity 5 a inFIG. 8B can be circular, oval, rectangular, trapezoidal, sectorial, equilateral polygonal, scalene polygonal, or irregular shaped, and the shape of theframe 81 can be changed accordingly. - While the invention has been described by way of example and in terms of several embodiments, it is to be understood that the invention is not limited thereto. To the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
Claims (20)
1. An electronic device, comprising:
a housing;
at least a heat source disposed in the housing; and
a fan disposed in the housing, wherein the fan comprises a frame, the frame comprises an airflow outlet, an airflow inlet, and a first extended portion, the first extended portion is disposed at the airflow outlet or the airflow inlet, and an inclined angle, an extending direction or a position of the first extended portion is adjusted according to a position of the heat source.
2. The electronic device as claimed in claim 1 , wherein the shape of the frame is appropriately modified according to the housing.
3. The electronic device as claimed in claim 1 , wherein the frame further comprises a second extended portion, and the second extended portion is disposed at the airflow outlet or the airflow inlet where the first extended portion is not disposed.
4. The electronic device as claimed in claim 3 , wherein an inclined angle of the second extended portion is adjusted according to a position of the housing for increasing airflow.
5. The electronic device as claimed in claim 3 , wherein the inclined angles or the extended depths of the first and the second extended portions are different.
6. The electronic device as claimed in claim 3 , wherein the second extended portion comprises a plurality of segments, and the distance between each segment and an end of a blade of the fan is different.
7. The electronic device as claimed in claim 1 , wherein the sectional areas or the shape of the airflow inlet and the airflow outlet are different, or the airflow inlet and the airflow outlet are not parallel.
8. The electronic device as claimed in claim 1 , wherein the frame is circular, oval, equilateral polygonal, scalene polygonal, trapezoidal, sectorial, or irregular shaped.
9. The electronic device as claimed in claim 1 , wherein the first extended portion comprises a plurality of segments, and the distance between each segment and an end of a blade of the fan is different.
10. The electronic device as claimed in claim 1 , wherein the frame comprises a plurality of segments with different inclined angles or axial heights.
11. A fan for dissipating heat from at least a heat source, comprising:
a frame comprising an airflow outlet, an airflow inlet, and a first extended portion, wherein the first extended portion is disposed at the airflow outlet or the airflow inlet, and an inclined angle, an extending direction or a position of the first extended portion is adjusted according to a position of the heat source; and
a blade disposed in the frame.
12. The fan as claimed in claim 11 , wherein the frame further comprises a second extended portion, and the second extended portion is disposed at one of the airflow outlet or the airflow inlet where the first extended portion is not disposed.
13. The fan as claimed in claim 12 , wherein the inclined angles or the extended depths of the first and the second extended portions are different.
14. The fan as claimed in claim 12 , wherein the second extended portion comprises a plurality of segments, and the distance between each segment and an end of the blade is different.
15. The fan as claimed in claim 11 , wherein the first extended portion comprises a plurality of segments, and the distance between each segment and an end of the blade is different.
16. The fan as claimed in claim 11 , wherein the sectional areas or the shape of the airflow inlet and the airflow outlet are different, or the airflow inlet and the airflow outlet are not parallel.
17. The fan as claimed in claim 11 , wherein the frame comprises a plurality of segments, and the axial heights or the inclined angles of any two adjacent segments are different.
18. The fan as claimed in claim 11 , wherein the frame is circular, oval, equilateral polygonal, scalene polygonal, trapezoidal, sectorial, or irregular shaped.
19. An electronic device comprising:
a housing comprising a fan cavity; and
a fan disposed in the fan cavity, wherein the fan comprises a frame, and the shape of the frame is adjusted according to that of the fan cavity.
20. The electronic device as claimed in claim 19 , wherein the frame comprises a plurality of segments, and the axial heights or the inclined angles of any two adjacent segments are different.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW093126328 | 2004-09-01 | ||
TW093126328A TW200609715A (en) | 2004-09-01 | 2004-09-01 | Electronic device and fan thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060045777A1 true US20060045777A1 (en) | 2006-03-02 |
Family
ID=35943414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/214,808 Abandoned US20060045777A1 (en) | 2004-09-01 | 2005-08-31 | Fans and electronic devices utilizing the same |
Country Status (2)
Country | Link |
---|---|
US (1) | US20060045777A1 (en) |
TW (1) | TW200609715A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130272858A1 (en) * | 2010-10-13 | 2013-10-17 | Dyson Technology Limited | Fan assembly |
KR20160097173A (en) * | 2013-12-02 | 2016-08-17 | 삼성전자주식회사 | Blower and outdoor unit of air conditioner having the same |
KR101742965B1 (en) * | 2013-12-02 | 2017-06-05 | 삼성전자주식회사 | Blower and outdoor unit of air conditioner having the same |
CN106897524A (en) * | 2017-02-28 | 2017-06-27 | 郑州云海信息技术有限公司 | A kind of method for designing for optimizing fan housing air outlet structure |
US20170211589A1 (en) * | 2016-01-22 | 2017-07-27 | Minebea Co., Ltd. | Axial Fan |
GB2484502B (en) * | 2010-10-13 | 2018-05-09 | Dyson Technology Ltd | A fan assembly |
WO2018093115A1 (en) * | 2016-11-15 | 2018-05-24 | 삼성전자주식회사 | Outdoor unit for air conditioner |
US20190010960A1 (en) * | 2016-02-26 | 2019-01-10 | Mitsubishi Electric Corporation | Blower apparatus |
US11085654B2 (en) | 2016-11-15 | 2021-08-10 | Samsung Electronics Co., Ltd. | Outdoor unit for air conditioner |
GB2599949A (en) * | 2020-10-16 | 2022-04-20 | Mosen Ltd | Aerodynamic spoiler for jetfan bellmouth |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4734015A (en) * | 1982-07-24 | 1988-03-29 | Papst-Motoren Gmbh & Co. Kg | Axial-flow fan |
US5803709A (en) * | 1995-12-06 | 1998-09-08 | Canarm Limited | Axial flow fan |
US6386843B1 (en) * | 1999-12-09 | 2002-05-14 | Nidec Corporation | Housing for fan units, and electrical apparatus using a fan unit |
US6411509B1 (en) * | 2000-04-07 | 2002-06-25 | Delts Electronics, Inc. | Tube-conducting fan assembly |
US6778390B2 (en) * | 2001-05-15 | 2004-08-17 | Nvidia Corporation | High-performance heat sink for printed circuit boards |
US20040163795A1 (en) * | 2003-02-25 | 2004-08-26 | Yi-Yung Lin | Heat sink |
US6890149B2 (en) * | 2002-06-05 | 2005-05-10 | Donald Metz | Laminar flow air mover |
US7110255B2 (en) * | 2003-04-11 | 2006-09-19 | Delta Electronics, Inc. | Heat-dissipating device and a housing thereof |
US7123484B2 (en) * | 2004-02-04 | 2006-10-17 | Quanta Computer, Inc. | Multi-layer and multi-direction fan device |
-
2004
- 2004-09-01 TW TW093126328A patent/TW200609715A/en unknown
-
2005
- 2005-08-31 US US11/214,808 patent/US20060045777A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4734015A (en) * | 1982-07-24 | 1988-03-29 | Papst-Motoren Gmbh & Co. Kg | Axial-flow fan |
US5803709A (en) * | 1995-12-06 | 1998-09-08 | Canarm Limited | Axial flow fan |
US6386843B1 (en) * | 1999-12-09 | 2002-05-14 | Nidec Corporation | Housing for fan units, and electrical apparatus using a fan unit |
US6411509B1 (en) * | 2000-04-07 | 2002-06-25 | Delts Electronics, Inc. | Tube-conducting fan assembly |
US6778390B2 (en) * | 2001-05-15 | 2004-08-17 | Nvidia Corporation | High-performance heat sink for printed circuit boards |
US6890149B2 (en) * | 2002-06-05 | 2005-05-10 | Donald Metz | Laminar flow air mover |
US20040163795A1 (en) * | 2003-02-25 | 2004-08-26 | Yi-Yung Lin | Heat sink |
US7110255B2 (en) * | 2003-04-11 | 2006-09-19 | Delta Electronics, Inc. | Heat-dissipating device and a housing thereof |
US7123484B2 (en) * | 2004-02-04 | 2006-10-17 | Quanta Computer, Inc. | Multi-layer and multi-direction fan device |
Cited By (26)
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---|---|---|---|---|
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US20130272858A1 (en) * | 2010-10-13 | 2013-10-17 | Dyson Technology Limited | Fan assembly |
US10100836B2 (en) * | 2010-10-13 | 2018-10-16 | Dyson Technology Limited | Fan assembly |
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US9822801B2 (en) | 2013-12-02 | 2017-11-21 | Samsung Electronics Co., Ltd. | Blower and outdoor unit of air conditioner comprising same |
USRE49709E1 (en) | 2013-12-02 | 2023-10-24 | Samsung Electronics Co., Ltd. | Blower and outdoor unit of air conditioner comprising same |
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AU2014357992B2 (en) * | 2013-12-02 | 2018-07-12 | Samsung Electronics Co., Ltd. | Blower and outdoor unit of air conditioner comprising same |
KR102317338B1 (en) * | 2013-12-02 | 2021-10-27 | 삼성전자주식회사 | Blower and outdoor unit of air conditioner having the same |
AU2014357992C1 (en) * | 2013-12-02 | 2019-01-03 | Samsung Electronics Co., Ltd. | Blower and outdoor unit of air conditioner comprising same |
KR20160097173A (en) * | 2013-12-02 | 2016-08-17 | 삼성전자주식회사 | Blower and outdoor unit of air conditioner having the same |
KR101931357B1 (en) * | 2013-12-02 | 2019-03-13 | 삼성전자주식회사 | Blower and outdoor unit of air conditioner having the same |
US10393150B2 (en) * | 2013-12-02 | 2019-08-27 | Samsung Electronics Co., Ltd. | Blower and outdoor unit of air conditioner comprising same |
KR20210133926A (en) * | 2013-12-02 | 2021-11-08 | 삼성전자주식회사 | Blower and outdoor unit of air conditioner having the same |
KR20210006485A (en) * | 2013-12-02 | 2021-01-18 | 삼성전자주식회사 | Blower and outdoor unit of air conditioner having the same |
KR20210006483A (en) * | 2013-12-02 | 2021-01-18 | 삼성전자주식회사 | Blower and outdoor unit of air conditioner having the same |
US20170211589A1 (en) * | 2016-01-22 | 2017-07-27 | Minebea Co., Ltd. | Axial Fan |
US20190010960A1 (en) * | 2016-02-26 | 2019-01-10 | Mitsubishi Electric Corporation | Blower apparatus |
US10801518B2 (en) * | 2016-02-26 | 2020-10-13 | Mitsubishi Electric Corporation | Blower apparatus |
US11085654B2 (en) | 2016-11-15 | 2021-08-10 | Samsung Electronics Co., Ltd. | Outdoor unit for air conditioner |
WO2018093115A1 (en) * | 2016-11-15 | 2018-05-24 | 삼성전자주식회사 | Outdoor unit for air conditioner |
CN106897524A (en) * | 2017-02-28 | 2017-06-27 | 郑州云海信息技术有限公司 | A kind of method for designing for optimizing fan housing air outlet structure |
GB2599949A (en) * | 2020-10-16 | 2022-04-20 | Mosen Ltd | Aerodynamic spoiler for jetfan bellmouth |
GB2599949B (en) * | 2020-10-16 | 2023-04-26 | Mosen Ltd | Aerodynamic spoiler for jetfan bellmouth |
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Legal Events
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AS | Assignment |
Owner name: DELTA ELECTRONICS, INC., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KAO, YU-CHIEN;CHOU, YI-FANG;LIN, TSU-LIANG;AND OTHERS;REEL/FRAME:017216/0080 Effective date: 20041108 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |