US20020114697A1 - Heat-dissipating fan unit - Google Patents
Heat-dissipating fan unit Download PDFInfo
- Publication number
- US20020114697A1 US20020114697A1 US10/066,470 US6647002A US2002114697A1 US 20020114697 A1 US20020114697 A1 US 20020114697A1 US 6647002 A US6647002 A US 6647002A US 2002114697 A1 US2002114697 A1 US 2002114697A1
- Authority
- US
- United States
- Prior art keywords
- fan
- air
- heat
- vent holes
- fan housing
- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
Definitions
- the invention relates to a heat-dissipating fan unit, more particularly to a heat-dissipating fan unit that is relatively silent and that has an enhanced heat-dissipating effect.
- a conventional heat-dissipating fan unit is used with a liquid crystal projector for dissipating heat generated by the latter.
- the conventional fan unit is usually provided with a plurality of inclined light-shielding members for shielding harmful light generated by the liquid crystal projector.
- the inclined light-shielding members may interrupt air flow form the liquid crystal projector, thereby resulting in inferior heat dissipation and loud noise.
- the object of the present invention is to provide a heat-dissipating fan unit that that is relatively silent and that has an enhanced heat-dissipating effect.
- a heat-dissipating fan unit comprises:
- a fan housing having first and second wall portions opposite to each other, the first wall portion being formed with an air inlet, the second wall portion being formed with an air outlet;
- an air guide member mounted on the first wall portion of the fan housing and registered with the air inlet of the fan housing, the air guide member being formed with a plurality of vent holes, each of which is in fluid communication with the air inlet of the fan housing, each of the vent holes being confined by a tubular wall that extends in a direction perpendicular to the first wall portion of the fan housing;
- a fan disposed in the fan housing, the fan being operable so as to draw air into the fan housing via the vent holes and the air inlet and to expel air in the fan housing via the air outlet.
- FIG. 1 is a perspective, partly cutaway view showing the first preferred embodiment of a heat-dissipating fan unit according to the present invention
- FIG. 2 is a schematic partly sectional view of the first preferred embodiment
- FIG. 3 is a fragmentary schematic top view of an air guide member of the first preferred embodiment.
- FIG. 4 is a perspective view showing the second preferred embodiment of a heat-dissipating fan unit according to the present invention.
- the first preferred embodiment of a heat-dissipating fan unit is shown to include a fan housing 21 , an air guide member 23 , and a fan 22 .
- the fan unit is adapted for use with a liquid crystal projector (not shown) for dissipating heat generated by a light source 6 in the liquid crystal projector.
- the fan housing 21 is adapted to be mounted in a projector housing 7 of the liquid crystal projector, and has first and second wall portions 211 , 212 opposite to each other.
- the first wall portion 211 is formed with an air inlet 213 .
- the second wall portion 212 is formed with an air outlet 214 In this embodiment, the first wall portion 211 is adapted to be disposed adjacent to the light source 6 .
- the air guide member 23 is mounted on the first wall portion 211 of the fan housing 21 and is registered with the air inlet 213 of the fan housing 21 .
- the air guide member 23 is formed with a plurality of vent holes 231 , each of which is in fluid communication with the air inlet 213 of the fan housing 21 .
- Each of the vent holes 231 is confined by a tubular wall that extends in a direction perpendicular to the first wall portion 211 of the fan housing 21 .
- the tubular walls of the vent holes 231 are in close with each other and are polygonal in cross-section
- the air guide member 23 has a honeycomb structure, and the tubular wall of each of the vent holes 231 has a hexagonal cross-section, as best shown in FIG. 3.
- the air guide member 23 includes a plurality of guide plates 232 , each of which is made from extended aluminum. Each guide plate 232 cooperates with an adjacent guide plate 232 to define the tubular walls of a series of the vent holes 231 . Adjacent ones of the guide plates 232 are interconnected, such as with the use of an adhesive, to form the air guide member 23 . Preferably, the tubular wall of each vent hole 231 is coated with a sound damping layer 233 (see FIG. 3).
- the fan 22 is disposed in the fan housing 21 , and is operable so as to draw air into the fan housing 21 via the vent holes 231 and the air inlet 213 and to expel air in the fan housing 21 via the air outlet 214
- the fan 22 is an axial fan.
- FIG. 4 illustrates the second preferred embodiment of a heat-dissipating fan unit 7 according to the present invention, which is a modification of the first preferred embodiment.
- the fan 72 is a centrifugal fan.
Abstract
A heat-dissipating fan unit includes a fan housing having first and second wall portions opposite to each other. An air guide member is mounted on the first wall portion of the fan housing and is registered with an air inlet formed in the first wall portion. The air guide member is formed with a plurality of vent holes, each of which is in fluid communication with the air inlet of the fan housing. Each of the vent holes is confined by a tubular wall that extends in a direction perpendicular to the first wall portion of the fan housing. A fan is disposed in the fan housing and is operable so as to draw air into the fan housing via the vent holes and the air inlet and to expel air in the fan housing via an air outlet formed in the second wall portion.
Description
- This application claims priority of Taiwan patent Application No. 090201594, filed on Jan. 31, 2001.
- 1. Field of the Invention
- The invention relates to a heat-dissipating fan unit, more particularly to a heat-dissipating fan unit that is relatively silent and that has an enhanced heat-dissipating effect.
- 2. Description of the Related Art
- Generally, a conventional heat-dissipating fan unit is used with a liquid crystal projector for dissipating heat generated by the latter. The conventional fan unit is usually provided with a plurality of inclined light-shielding members for shielding harmful light generated by the liquid crystal projector. However, the inclined light-shielding members may interrupt air flow form the liquid crystal projector, thereby resulting in inferior heat dissipation and loud noise.
- Therefore, the object of the present invention is to provide a heat-dissipating fan unit that that is relatively silent and that has an enhanced heat-dissipating effect.
- According to the present invention, a heat-dissipating fan unit comprises:
- a fan housing having first and second wall portions opposite to each other, the first wall portion being formed with an air inlet, the second wall portion being formed with an air outlet;
- an air guide member mounted on the first wall portion of the fan housing and registered with the air inlet of the fan housing, the air guide member being formed with a plurality of vent holes, each of which is in fluid communication with the air inlet of the fan housing, each of the vent holes being confined by a tubular wall that extends in a direction perpendicular to the first wall portion of the fan housing; and
- a fan disposed in the fan housing, the fan being operable so as to draw air into the fan housing via the vent holes and the air inlet and to expel air in the fan housing via the air outlet.
- Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments with reference to the accompanying drawings, of which:
- FIG. 1 is a perspective, partly cutaway view showing the first preferred embodiment of a heat-dissipating fan unit according to the present invention;
- FIG. 2 is a schematic partly sectional view of the first preferred embodiment;
- FIG. 3 is a fragmentary schematic top view of an air guide member of the first preferred embodiment; and
- FIG. 4 is a perspective view showing the second preferred embodiment of a heat-dissipating fan unit according to the present invention.
- Referring to FIGS. 1 and 2, the first preferred embodiment of a heat-dissipating fan unit according to the present invention is shown to include a
fan housing 21, anair guide member 23, and afan 22. In this embodiment, the fan unit is adapted for use with a liquid crystal projector (not shown) for dissipating heat generated by alight source 6 in the liquid crystal projector. - The
fan housing 21 is adapted to be mounted in aprojector housing 7 of the liquid crystal projector, and has first andsecond wall portions first wall portion 211 is formed with anair inlet 213. Thesecond wall portion 212 is formed with anair outlet 214 In this embodiment, thefirst wall portion 211 is adapted to be disposed adjacent to thelight source 6. - The
air guide member 23 is mounted on thefirst wall portion 211 of thefan housing 21 and is registered with theair inlet 213 of thefan housing 21. Theair guide member 23 is formed with a plurality ofvent holes 231, each of which is in fluid communication with theair inlet 213 of thefan housing 21. Each of thevent holes 231 is confined by a tubular wall that extends in a direction perpendicular to thefirst wall portion 211 of thefan housing 21. The tubular walls of thevent holes 231 are in close with each other and are polygonal in cross-section In this embodiment, theair guide member 23 has a honeycomb structure, and the tubular wall of each of thevent holes 231 has a hexagonal cross-section, as best shown in FIG. 3. Theair guide member 23 includes a plurality ofguide plates 232, each of which is made from extended aluminum. Eachguide plate 232 cooperates with anadjacent guide plate 232 to define the tubular walls of a series of thevent holes 231. Adjacent ones of theguide plates 232 are interconnected, such as with the use of an adhesive, to form theair guide member 23. Preferably, the tubular wall of eachvent hole 231 is coated with a sound damping layer 233 (see FIG. 3). - The
fan 22 is disposed in thefan housing 21, and is operable so as to draw air into thefan housing 21 via thevent holes 231 and theair inlet 213 and to expel air in thefan housing 21 via theair outlet 214 In this embodiment, thefan 22 is an axial fan. - Due to the presence of the
air guide member 23, air around thelight source 6 can be guided and drawn into thefan housing 21 via thevent holes 231 and theair inlet 213 in parallel directions so as to result in a relatively low air-resistance for enhancing heat-dissipation. Furthermore, due to the presence of thesound damping layer 233, the noise generated by the fan unit of the present invention can be reduced to a minimum. - FIG. 4 illustrates the second preferred embodiment of a heat-dissipating
fan unit 7 according to the present invention, which is a modification of the first preferred embodiment. Unlike the previous embodiment, thefan 72 is a centrifugal fan. - While the present invention has been described in connection with what is considered the most practical and preferred embodiments, it is understood that this invention is not limited to the disclosed embodiments but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.
Claims (8)
1. A heat-dissipating fan unit, comprising:
a fan housing having first and second wall portions opposite to each other, said first wall portion being formed with an air inlet, said second wall portion being formed with an air outlet;
an air guide member mounted on said first wall portion of said fan housing and registered with said air inlet of said fan housing, said air guide member being formed with a plurality of vent holes, each of which is in fluid communication with said air inlet of said fan housing, each of said vent holes being confined by a tubular wall that extends in a direction perpendicular to said first wall portion of said fan housing; and
a fan disposed in said fan housing, said fan being operable so as to draw air into said fan housing via said vent holes and said air inlet and to expel air in said fan housing via said air outlet.
2. The heat-dissipating fan unit as claimed in claim 1 , wherein said tubular walls of said vent holes are in close contact with each other and are polygonal in cross-section.
3. The heat-dissipating fan unit as claimed in claim 2 , wherein said air guide member includes a plurality of guide plates, each of which is made from extended aluminum, each of said guide plates cooperating with an adjacent one of said guide plates to define said tubular walls of a series of said vent holes.
4. The heat-dissipating fan unit as claimed in claim 1 , wherein said air guide member has a honeycomb structure, and said tubular walls of said vent holes are hexagonal in cross-section.
5. The heat-dissipating fan unit as claimed in claim 3 , wherein said air guide member includes a plurality of guide plates, each of said guide plates cooperating with an adjacent one of said guide plates to define said tubular walls of a series of said vent holes.
6. The heat-dissipating fan unit as claimed in claim 1 , wherein said fan is an axial fan.
7. The heat-dissipating fan unit as claimed in claim 1 , wherein said fan is a centrifugal fan.
8. The heat-dissipating fan unit as claimed in claim 1 , wherein said tubular wall of each of said vent holes is coated with a sound damping layer.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW090201594U TW444877U (en) | 2001-01-31 | 2001-01-31 | Conducted cooling device |
TW090201594 | 2001-01-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20020114697A1 true US20020114697A1 (en) | 2002-08-22 |
Family
ID=21680970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/066,470 Abandoned US20020114697A1 (en) | 2001-01-31 | 2002-01-31 | Heat-dissipating fan unit |
Country Status (2)
Country | Link |
---|---|
US (1) | US20020114697A1 (en) |
TW (1) | TW444877U (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040014421A1 (en) * | 2002-07-19 | 2004-01-22 | Raymer Paul H. | Return air pressure relief vent |
US20060292975A1 (en) * | 2005-06-28 | 2006-12-28 | Delta Electronics, Inc. | Heat dissipating module and casing thereof |
US20090175006A1 (en) * | 2008-01-09 | 2009-07-09 | Rong-Yuan Jou | Honeycomb heat dissipating apparatus |
US20100192616A1 (en) * | 2008-10-22 | 2010-08-05 | Ingo Gores | Air guiding element having a flow control element |
US20130287554A1 (en) * | 2012-04-25 | 2013-10-31 | Gamc Biotech Development Co., Ltd. | Pineapple pump |
US20140113536A1 (en) * | 2012-10-23 | 2014-04-24 | Visteon Global Technologies, Inc. | Zonal airflow system for a vehicle |
US20140314571A1 (en) * | 2013-04-23 | 2014-10-23 | W. K. Wu Products Inc. | Ceiling light assembly |
US10648483B2 (en) * | 2013-05-24 | 2020-05-12 | Delta T, Llc | Ceiling fan with moisture protection features |
US20210277915A1 (en) * | 2020-03-06 | 2021-09-09 | Pentair Water Pool And Spa, Inc. | Pump assembly and improved fan shroud therefor |
-
2001
- 2001-01-31 TW TW090201594U patent/TW444877U/en not_active IP Right Cessation
-
2002
- 2002-01-31 US US10/066,470 patent/US20020114697A1/en not_active Abandoned
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040014421A1 (en) * | 2002-07-19 | 2004-01-22 | Raymer Paul H. | Return air pressure relief vent |
US20060292975A1 (en) * | 2005-06-28 | 2006-12-28 | Delta Electronics, Inc. | Heat dissipating module and casing thereof |
US20090175006A1 (en) * | 2008-01-09 | 2009-07-09 | Rong-Yuan Jou | Honeycomb heat dissipating apparatus |
US20100192616A1 (en) * | 2008-10-22 | 2010-08-05 | Ingo Gores | Air guiding element having a flow control element |
US9039499B2 (en) * | 2008-10-22 | 2015-05-26 | Airbus Operations Gmbh | Air guiding element having a flow control element |
US20130287554A1 (en) * | 2012-04-25 | 2013-10-31 | Gamc Biotech Development Co., Ltd. | Pineapple pump |
US20140113536A1 (en) * | 2012-10-23 | 2014-04-24 | Visteon Global Technologies, Inc. | Zonal airflow system for a vehicle |
US20140314571A1 (en) * | 2013-04-23 | 2014-10-23 | W. K. Wu Products Inc. | Ceiling light assembly |
US10648483B2 (en) * | 2013-05-24 | 2020-05-12 | Delta T, Llc | Ceiling fan with moisture protection features |
US20210277915A1 (en) * | 2020-03-06 | 2021-09-09 | Pentair Water Pool And Spa, Inc. | Pump assembly and improved fan shroud therefor |
Also Published As
Publication number | Publication date |
---|---|
TW444877U (en) | 2001-07-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |