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US20060257276A1 - Fan housing - Google Patents

Fan housing Download PDF

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Publication number
US20060257276A1
US20060257276A1 US11/293,276 US29327605A US2006257276A1 US 20060257276 A1 US20060257276 A1 US 20060257276A1 US 29327605 A US29327605 A US 29327605A US 2006257276 A1 US2006257276 A1 US 2006257276A1
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US
United States
Prior art keywords
frame
fan
fan housing
engaging member
guide slot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/293,276
Inventor
Wen-Tsao Lee
Chieh-Lung Ho
Shang-Yen Tsai
Hsiu-Wei Wu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delta Electronics Inc
Original Assignee
Delta Electronics Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37008696&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20060257276(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Delta Electronics Inc filed Critical Delta Electronics Inc
Assigned to DELTA ELECTRONICS, INC. reassignment DELTA ELECTRONICS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HO, CHIEH-LUNG, LEE, WEN-TSAO, TSAI, SHANG-YEN, WU, HSIU-WEI
Publication of US20060257276A1 publication Critical patent/US20060257276A1/en
Abandoned legal-status Critical Current

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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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans

Definitions

  • the invention relates to a fan housing, and in particular, to a fan housing provided with engaging members.
  • FIG. 1 depicts a conventional fan, wherein the fan 1 has a top cover 12 , a base 13 and a motor 14 .
  • the top cover 12 has through holes 121 .
  • the base 13 has holes 131 corresponding to the through holes 121 of the top cover 12 . Screws 15 pass through the through holes 121 into the holes 131 to join the top cover 12 and the base 13 together.
  • FIG. 2 depicts another conventional fan, wherein the fan 2 has a top cover 22 , a base 23 and a motor 24 .
  • the top cover 22 has engaging parts 221 .
  • the base 23 has grooves 231 corresponding to the engaging parts 221 of the top cover 22 .
  • the top cover 22 and the base 23 are joined together with the grooves 231 engaged by the engaging parts 221 .
  • the described fans present some significant problems.
  • the screws 15 joining the top cover 12 and the base 13 may loosen after long-term use. Furthermore, screwing is labor consuming.
  • the engaging parts 221 engaging the grooves 231 may loosen or even break after long-term use. As a possible result, the fan is not maintained in position and the performance of the electronic device beside the fan is negatively influenced.
  • the invention provides a fan housing provided with engaging member.
  • the fan housing in accordance with an exemplary embodiment of the invention is used to surround a rotor of a fan.
  • the fan housing comprises a first frame and a second frame.
  • the first frame comprises at least one extending part and an engaging hole defined by the extending part.
  • the second frame comprises a guide slot and a protrusion corresponding to the extending part and the engaging hole respectively.
  • the first and second frames are detachably assembled, with the extending part inserted into the guide slot, and the protrusion disposed in the engaging hole.
  • the first frame is a top cover of the fan housing and defines an air inlet. An edge of the air inlet is straight to prevent a backflow in the fan.
  • the second frame is a base of the fan housing, and the first and second frames are assembled via the engaging members to form an air outlet.
  • the second frame comprises an opening serving as an air inlet.
  • the fan is provided with an air inlet or two air inlets.
  • the fan may be a centrifugal fan or an axial fan.
  • FIG. 1 depicts a conventional fan
  • FIG. 2 depicts another conventional fan
  • FIG. 3 is an exploded perspective view of a fan in accordance with an embodiment of the invention.
  • FIG. 4 is an exploded perspective view of a fan in accordance with another embodiment of the invention.
  • a fan 3 in accordance with an embodiment of the invention is a single-intake centrifugal fan which comprises a first frame 31 , a second frame 32 , a stator base 33 , and a rotor 37 .
  • the first frame 31 comprises an extending part 311 and an air inlet 314 .
  • the extending part 311 has a first engaging member (e.g. an engaging hole) 312 .
  • the air inlet 314 has a block 315 which is straight to prevent a backflow in the fan 3 .
  • the extending part 311 extends from a periphery of the first frame 31 .
  • the number of the extending parts 311 may be plural. As shown in FIG. 3 , four extending parts 311 are provided in this embodiment.
  • the second frame 32 comprises an air outlet 35 and a guide slot 321 corresponding to the extending part 311 of the first frame 31 .
  • a second engaging member (e.g. a protrusion) 322 is provided on an inner wall 3212 of the guide slot 321 .
  • a plurality of ribs 3211 are provided on both side walls 3213 of the guide slot 321 .
  • the protrusion 322 has an inclined surface 3221 .
  • the guide slot 321 and the protrusion 322 are disposed at an outer surface of the second frame 32 .
  • the number of the guide slots 321 and the protrusions 322 may be plural. As shown in FIG. 3 , four guide slots 321 and protrusions 322 are provided in this embodiment.
  • the inclined surface 3221 facilitates the protrusion 322 to engage with the engaging hole 312 . Furthermore, ribs 3211 in the guide slot 321 abut the extending part 311 and help relieve excessive strain.
  • the first frame 31 in this embodiment is the top cover of the single-intake centrifugal fan 3
  • the second frame 32 is the base.
  • the stator base 33 is disposed in the second frame 32 for receiving an external stator (not shown).
  • the rotor 37 is disposed around the stator base 33 to generate an interaction therebetween.
  • the first frame 31 and the second frame 32 are assembled via the first engaging member 312 and the second engaging member 322 to house the rotor 37 .
  • Airflow enters the air inlet 314 of the first frame 31 and exits from the air outlet 35 of the second frame 32 .
  • the first and second frames 31 , 32 are both formed by injection molding, pressing or cutting.
  • FIG. 4 depicts a dual-intake centrifugal fan 4 in accordance with another embodiment of the invention, wherein the same references will be used for elements which are identical or similar to those shown in FIG. 3 .
  • an opening serving as another air inlet 36 is provided on the second frame 32 .
  • the second frame 32 further comprises a plurality of connecting parts 34 connecting the stator base 33 and the second frame 32 .
  • the connecting parts 34 also support the stator base 33 .
  • the air inlet 314 has no straight edge.
  • fans e.g. single-intake centrifugal fans, dual-intake centrifugal fans, and axial fans
  • axial fans e.g. single-intake centrifugal fans, dual-intake centrifugal fans, and axial fans
  • the fan housing provides the rotor of the fan with protection.
  • the fan housing of the invention does not have problems presented in the prior art.
  • the invention prevents using screws for joining the frames loosening after long-term use and the process for screwing required.
  • the invention also avoids the potential breakage of the protrusion and the potential loosening of the protrusion.
  • the invention provides ribs to secure the extending part tightly in the guide slot, even if the guide slot is larger than the extending part due to the manufacturing tolerance. In sum, the invention provides strong engaging members, improves the manufacturing speed and saves labor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

A fan housing for surrounding the rotor of a fan. The fan housing has a first frame and a second frame. The first frame includes at least one extending part with a first engaging member. The second frame includes a guide slot and a second engaging member corresponding to the first engaging member to enable the first and second frames to be detachably assembled together.

Description

    BACKGROUND
  • The invention relates to a fan housing, and in particular, to a fan housing provided with engaging members.
  • FIG. 1 depicts a conventional fan, wherein the fan 1 has a top cover 12, a base 13 and a motor 14. The top cover 12 has through holes 121. The base 13 has holes 131 corresponding to the through holes 121 of the top cover 12. Screws 15 pass through the through holes 121 into the holes 131 to join the top cover 12 and the base 13 together.
  • FIG. 2 depicts another conventional fan, wherein the fan 2 has a top cover 22, a base 23 and a motor 24. The top cover 22 has engaging parts 221. The base 23 has grooves 231 corresponding to the engaging parts 221 of the top cover 22. The top cover 22 and the base 23 are joined together with the grooves 231 engaged by the engaging parts 221.
  • The described fans present some significant problems. For the first mentioned fan, the screws 15 joining the top cover 12 and the base 13 may loosen after long-term use. Furthermore, screwing is labor consuming. For the second mentioned fan, the engaging parts 221 engaging the grooves 231 may loosen or even break after long-term use. As a possible result, the fan is not maintained in position and the performance of the electronic device beside the fan is negatively influenced.
    • SUMMARY
  • To solve the described problems, the invention provides a fan housing provided with engaging member.
  • The fan housing in accordance with an exemplary embodiment of the invention is used to surround a rotor of a fan. The fan housing comprises a first frame and a second frame. The first frame comprises at least one extending part and an engaging hole defined by the extending part. The second frame comprises a guide slot and a protrusion corresponding to the extending part and the engaging hole respectively. The first and second frames are detachably assembled, with the extending part inserted into the guide slot, and the protrusion disposed in the engaging hole. The first frame is a top cover of the fan housing and defines an air inlet. An edge of the air inlet is straight to prevent a backflow in the fan. The second frame is a base of the fan housing, and the first and second frames are assembled via the engaging members to form an air outlet. The second frame comprises an opening serving as an air inlet. The fan is provided with an air inlet or two air inlets. The fan may be a centrifugal fan or an axial fan.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:
  • FIG. 1 depicts a conventional fan;
  • FIG. 2 depicts another conventional fan;
  • FIG. 3 is an exploded perspective view of a fan in accordance with an embodiment of the invention; and
  • FIG. 4 is an exploded perspective view of a fan in accordance with another embodiment of the invention.
    • DETAILED DESCRIPTION
  • Referring to FIG. 3, a fan 3 in accordance with an embodiment of the invention is a single-intake centrifugal fan which comprises a first frame 31, a second frame 32, a stator base 33, and a rotor 37.
  • The first frame 31 comprises an extending part 311 and an air inlet 314. The extending part 311 has a first engaging member (e.g. an engaging hole) 312. The air inlet 314 has a block 315 which is straight to prevent a backflow in the fan 3. The extending part 311 extends from a periphery of the first frame 31. The number of the extending parts 311 may be plural. As shown in FIG. 3, four extending parts 311 are provided in this embodiment.
  • The second frame 32 comprises an air outlet 35 and a guide slot 321 corresponding to the extending part 311 of the first frame 31. A second engaging member (e.g. a protrusion) 322 is provided on an inner wall 3212 of the guide slot 321. A plurality of ribs 3211 are provided on both side walls 3213 of the guide slot 321. The protrusion 322 has an inclined surface 3221. The guide slot 321 and the protrusion 322 are disposed at an outer surface of the second frame 32. The number of the guide slots 321 and the protrusions 322 may be plural. As shown in FIG. 3, four guide slots 321 and protrusions 322 are provided in this embodiment.
  • When the extending part 311 is inserted into the guide slot 321, the inclined surface 3221 facilitates the protrusion 322 to engage with the engaging hole 312. Furthermore, ribs 3211 in the guide slot 321 abut the extending part 311 and help relieve excessive strain.
  • The first frame 31 in this embodiment is the top cover of the single-intake centrifugal fan 3, while the second frame 32 is the base. The stator base 33 is disposed in the second frame 32 for receiving an external stator (not shown). The rotor 37 is disposed around the stator base 33 to generate an interaction therebetween. The first frame 31 and the second frame 32 are assembled via the first engaging member 312 and the second engaging member 322 to house the rotor 37. Airflow enters the air inlet 314 of the first frame 31 and exits from the air outlet 35 of the second frame 32. The first and second frames 31, 32 are both formed by injection molding, pressing or cutting.
  • FIG. 4 depicts a dual-intake centrifugal fan 4 in accordance with another embodiment of the invention, wherein the same references will be used for elements which are identical or similar to those shown in FIG. 3. In this embodiment, an opening serving as another air inlet 36 is provided on the second frame 32. Thus, airflow enters the air inlets 314, 36 and exits from the air outlet 35. The second frame 32 further comprises a plurality of connecting parts 34 connecting the stator base 33 and the second frame 32. The connecting parts 34 also support the stator base 33. Furthermore, the air inlet 314 has no straight edge.
  • It is understood that various fans (e.g. single-intake centrifugal fans, dual-intake centrifugal fans, and axial fans) are applicable to the invention.
  • For both the prior art and the invention, the fan housing provides the rotor of the fan with protection. The fan housing of the invention, however, does not have problems presented in the prior art. The invention prevents using screws for joining the frames loosening after long-term use and the process for screwing required. The invention also avoids the potential breakage of the protrusion and the potential loosening of the protrusion. Furthermore, the invention provides ribs to secure the extending part tightly in the guide slot, even if the guide slot is larger than the extending part due to the manufacturing tolerance. In sum, the invention provides strong engaging members, improves the manufacturing speed and saves labor.
  • While the invention has been described by way of example and in terms of preferred embodiment, 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 (19)

1. A fan housing comprising:
a first frame comprising at least one extending part with a first engaging member;
a second frame comprising a guide slot and a second engaging member corresponding to the first engaging member to enable the first and second frames to be detachably assembled together.
2. The fan housing as claimed in claim 1, further comprising a stator base disposed in the second frame, and a plurality of connecting parts for connecting the stator base and the second frame.
3. The fan housing as claimed in claim 1, further comprising at least one rib provided on a side wall of the guide slot.
4. The fan housing as claimed in claim 1, wherein the first engaging member and the second engaging member are an engaging hole and a protrusion, respectively.
5. The fan housing as claimed in claim 1, wherein the first and second frames are both formed by injection molding, pressing or cutting.
6. The fan housing as claimed in claim 1, wherein the extending part extends from a periphery of the first frame.
7. The fan housing as claimed in claim 1, wherein the second engaging member comprises an inclined surface.
8. The fan housing as claimed in claim 1, wherein the guide slot and the second engaging member are formed at an outer surface of the second frame.
9. The fan housing as claimed in claim 1, wherein the first frame is a top cover of the fan housing and provided with an air inlet having a block to prevent a backflow.
10. The fan housing as claimed in claim 9, wherein the block of the air inlet is straight.
11. The fan housing as claimed in claim 1, wherein the second frame is a base of the fan housing, and the first and second frames are assembled to form an air outlet.
12. The fan housing as claimed in claim 11, wherein the second frame comprises an opening serving as an air inlet.
13. A fan comprising:
a first frame comprising at least one extending part with a first engaging member;
a second frame comprising a guide slot and a second engaging member corresponding to the first engaging member to enable the first and second frames to be detachably assembled together; and
a rotor mounted in a space surrounded by the first and second frames.
14. The fan as claimed in claim 13, further comprising at least one rib provided on a side wall of the guide slot.
15. The fan as claimed in claim 13, wherein the first and second engaging members are a engaging hole and a protrusion, respectively.
16. The fan as claimed in claim 13, wherein the extending part extends from a periphery of the first frame.
17. The fan as claimed in claim 13, wherein the second engaging member is provided on an inner wall of the guide slot.
18. The fan as claimed in claim 13, wherein the second engaging member comprises an inclined surface.
19. The fan as claimed in claim 13, wherein the guide slot and the second engaging member are disposed at an outer surface of the second frame.
US11/293,276 2005-05-13 2005-12-05 Fan housing Abandoned US20060257276A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW94207771 2005-05-13
TW094207771U TWM275681U (en) 2005-05-13 2005-05-13 Fan housing

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011102026A1 (en) * 2011-05-19 2012-11-22 Liebherr-Hausgeräte Lienz Gmbh fan position
US11236762B2 (en) * 2019-04-26 2022-02-01 Johnson Controls Technology Company Variable geometry of a housing for a blower assembly

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US1971827A (en) * 1932-02-09 1934-08-28 Gen Electric Fan
US3698832A (en) * 1970-06-18 1972-10-17 Carl Price Pump impeller housing with integral flow regulator
US4120615A (en) * 1977-02-04 1978-10-17 Allware Agencies Limited Box fans
US4834615A (en) * 1987-06-04 1989-05-30 Siemens Aktiengesellschaft Mounting arrangement for an axial fan
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US6587342B1 (en) * 2002-07-23 2003-07-01 Inventec Corporation Snap coupling cooling fan module
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US20040136845A1 (en) * 2003-01-13 2004-07-15 Hsieh Hsin-Mao Coil housing for a brushless fan
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US6808411B2 (en) * 2002-12-13 2004-10-26 Hon Hai Precision Ind. Co., Ltd Fan holder with electrical connector socket
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US20050095121A1 (en) * 2003-11-05 2005-05-05 Anand Vithani Unitary fan-motor grill assembly
US6921247B2 (en) * 2003-04-14 2005-07-26 Sun Microsystems, Inc. Snap-together modular fan tray assembly for an electronics enclosure
US6942471B2 (en) * 2002-11-15 2005-09-13 Ebm-Papst St. Georgen Gmbh & Co. Kg Electric fan with strain relief connection
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US1971827A (en) * 1932-02-09 1934-08-28 Gen Electric Fan
US3698832A (en) * 1970-06-18 1972-10-17 Carl Price Pump impeller housing with integral flow regulator
US4120615A (en) * 1977-02-04 1978-10-17 Allware Agencies Limited Box fans
US4834615A (en) * 1987-06-04 1989-05-30 Siemens Aktiengesellschaft Mounting arrangement for an axial fan
US4865517A (en) * 1988-07-11 1989-09-12 Heil-Quaker Corporation Blower with clam shell housing
US5042269A (en) * 1989-12-29 1991-08-27 Sullivan John T Fan coil unit with snap securing fan housing
US5110263A (en) * 1990-09-24 1992-05-05 Duracraft Corporation Convertible floor and window fan
US5257904A (en) * 1991-01-18 1993-11-02 Sullivan John T Volute housing for a centrifugal fan, blower or the like
US5443364A (en) * 1993-10-18 1995-08-22 Carrier Corporation Snap-fit inducer housing and cover for gas furnace
US5848875A (en) * 1997-03-03 1998-12-15 San-Jou; Wen Combinational air blower and exhauster
US5825622A (en) * 1997-05-17 1998-10-20 Chip Coolers, Inc. Heat sink assembly with adjustable mounting clip
US5954476A (en) * 1997-08-12 1999-09-21 Fasco Industries, Inc. Snap-fit blower housing assembly and seal method
US6015274A (en) * 1997-10-24 2000-01-18 Hunter Fan Company Low profile ceiling fan having a remote control receiver
US6129528A (en) * 1998-07-20 2000-10-10 Nmb Usa Inc. Axial flow fan having a compact circuit board and impeller blade arrangement
US6457953B1 (en) * 1998-07-20 2002-10-01 Nmb (Usa) Inc. Axial flow fan
US6428288B1 (en) * 1998-09-11 2002-08-06 Peter J. King Fluid pumps
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US6244953B1 (en) * 1999-05-25 2001-06-12 3Com Corporation Electronic device fan mounting system
US6375440B2 (en) * 1999-09-30 2002-04-23 Fujitsu Limited Fan unit, fan assembly, and an apparatus comprising the fan assembly
US6692240B1 (en) * 1999-11-29 2004-02-17 Thomas Industries Inc. Cylindrical pump housing with a fan guard mounted on each end of the housing with snap tabs engaging housing recesses
US6309190B1 (en) * 2000-01-28 2001-10-30 Yen Sun Technic Industrial Corporation Shaft supporting structure for an axial fan
US6364618B1 (en) * 2000-02-03 2002-04-02 Lakewood Engineering & Mfg. Co. Fan body assembly
US6485266B2 (en) * 2000-03-10 2002-11-26 Thomas Industries, Inc. Compressor assembly with deflector
US6213819B1 (en) * 2000-04-13 2001-04-10 Enlight Corporation Detachable fan rack for computer
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US6511288B1 (en) * 2000-08-30 2003-01-28 Jakel Incorporated Two piece blower housing with vibration absorbing bottom piece and mounting flanges
US20020094283A1 (en) * 2000-10-24 2002-07-18 Fujitsu Siemens Computers Gmbh Fan Module
US6435889B1 (en) * 2000-12-29 2002-08-20 Compaq Information Technologies Group, L.P. Reduced complexity hot plug blind mate fan assembly and connector therefor
US20020090308A1 (en) * 2001-01-10 2002-07-11 Jui-Hung Cheng Heat dissipation device having passive fan
US6373698B1 (en) * 2001-05-03 2002-04-16 International Business Machines Corporation Apparatus for cooling a computer system
US6688379B2 (en) * 2001-06-13 2004-02-10 Delta Electronics, Inc. Heat dissipation device with high efficiency
US6527522B2 (en) * 2001-07-03 2003-03-04 Yen Sun Technology Corp. Heat dissipation fan structure
US20030108442A1 (en) * 2001-12-11 2003-06-12 Ametek, Inc. Fan blower assembly with one-piece air diffuser and bayonet-style end cap
US6670737B2 (en) * 2002-01-02 2003-12-30 Yen Sun Technology Corp. Motor having removable poles with positioning structures
US20030129071A1 (en) * 2002-01-04 2003-07-10 Milks Stephen A. Air circulation device
US6587342B1 (en) * 2002-07-23 2003-07-01 Inventec Corporation Snap coupling cooling fan module
US6942471B2 (en) * 2002-11-15 2005-09-13 Ebm-Papst St. Georgen Gmbh & Co. Kg Electric fan with strain relief connection
US6808411B2 (en) * 2002-12-13 2004-10-26 Hon Hai Precision Ind. Co., Ltd Fan holder with electrical connector socket
US20040136845A1 (en) * 2003-01-13 2004-07-15 Hsieh Hsin-Mao Coil housing for a brushless fan
US20040191095A1 (en) * 2003-03-31 2004-09-30 Sunonwealth Electric Machine Industry Co., Ltd. Integrally formed casing for a heat-dissipating fan
US7021906B2 (en) * 2003-03-31 2006-04-04 Inventec Corporation Fan assembly mechanism
US6921247B2 (en) * 2003-04-14 2005-07-26 Sun Microsystems, Inc. Snap-together modular fan tray assembly for an electronics enclosure
US20050088818A1 (en) * 2003-10-23 2005-04-28 Tatung Co., Ltd. Backflow-preventive fan module
US20050095121A1 (en) * 2003-11-05 2005-05-05 Anand Vithani Unitary fan-motor grill assembly

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011102026A1 (en) * 2011-05-19 2012-11-22 Liebherr-Hausgeräte Lienz Gmbh fan position
US11236762B2 (en) * 2019-04-26 2022-02-01 Johnson Controls Technology Company Variable geometry of a housing for a blower assembly

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