US20090246028A1 - Fan blade iron isolation - Google Patents

Fan blade iron isolation Download PDF

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Publication number
US20090246028A1
US20090246028A1 US12/055,998 US5599808A US2009246028A1 US 20090246028 A1 US20090246028 A1 US 20090246028A1 US 5599808 A US5599808 A US 5599808A US 2009246028 A1 US2009246028 A1 US 2009246028A1
Authority
US
United States
Prior art keywords
blade
iron
irons
mounting
fan
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
US12/055,998
Other languages
English (en)
Inventor
Anthony Todd Richardson
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.)
Hunter Fan Co
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US12/055,998 priority Critical patent/US20090246028A1/en
Assigned to HUNTER FAN COMPANY reassignment HUNTER FAN COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RICHARDSON, ANTHONY TODD
Priority to CA002659707A priority patent/CA2659707A1/en
Priority to MX2009003192A priority patent/MX2009003192A/es
Priority to CNA2009101303180A priority patent/CN101555882A/zh
Priority to TW098109975A priority patent/TW200949079A/zh
Publication of US20090246028A1 publication Critical patent/US20090246028A1/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
    • 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
    • F04D25/088—Ceiling fans
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/34—Blade mountings

Definitions

  • This invention relates to a fan system for mounting blade irons and blades, and specifically to systems for isolation of the blades of a ceiling fan from vibrations of the drive motor.
  • fans many different types exist today, such as ceiling fans, table fans, pedestal fans, and fans used in conjunction with mechanical equipment. Most of these fans include a blade and a blade mount or blade iron which couples the blade to the motor.
  • Electrically powered ceiling fans typically have a motor mounted within a stationary housing that is suspended from a ceiling.
  • the motor rotates an annular array of individual extensions in the form of blade mounts or blade irons.
  • Each blade iron is associated with a blade mounted thereto.
  • the blades of ceiling fans are usually coupled to the blade irons by passing mounting screws through holes in the blade and into threaded holes in the blade iron. The blade irons are then mounted to the motor.
  • Ceiling fans are particularly susceptible to the transmission of motor-induced noises since by reason of their large area and length, the blades tend to act as resonating or sound transmitting devices, and thus tend to impart into the air, as noise, vibrations or the like which the blades receive from the drive motor.
  • the drive motors themselves while relatively quiet by themselves, nevertheless when used to drive ceiling fan blades can impart objectionable noises to the surrounding atmosphere through the blades.
  • a noisy stator caused for example by slightly loose stator laminations, which would produce an otherwise relatively unobjectionable and unnoticeable stator hum, may at times be transmitted through the motor structure through the blade-mounting cage or rotor to the blades themselves and produce an objectionably loud noise.
  • rotor vibrations or noises and bearing noises may be amplified by the blades and become objectionable.
  • a fan comprises an electric motor, an annular array of blade irons, and a ceiling fan blade associated with each blade iron of the annular array of blade irons.
  • Each blade iron has at least one mounting hole therein and an elastomeric grommet positioned within the mounting hole.
  • Each blade iron of the array of blade irons is coupled to two oppositely disposed other blade irons of the array of blade irons.
  • FIG. 1 is a perspective view of a ceiling fan embodying principles of the invention in a preferred form.
  • FIG. 2 is a perspective view of a portion of the ceiling fan of FIG. 1 .
  • a ceiling fan 10 having an electric motor 13 connected to a source of electric power by unshown wires.
  • the motor 13 includes a bottom mounting plate 14 coupled to the rotor so that it rotates during operation of the motor.
  • the motor bottom mounting plate 14 has an annular array of threaded mounting holes 19 .
  • the ceiling fan 10 also includes an annular array of blade irons 16 coupled to the mounting plate 14 , each having a blade 17 mounted thereto in conventional fashion.
  • Each blade iron 16 has a motor mounting flange 21 configured to be coupled with the bottom mounting plate 14 of the electric motor 13 .
  • Each mounting flange 21 has a depression or recess 23 extending from the bottom surface 24 and inward surface 25 , an end tongue section 26 , and an end groove section 27 configured to receive the end tongue section 26 .
  • the end groove section 27 includes an alignment pin 28 and a threaded mounting hole 29 .
  • the end tongue section 26 includes an alignment hole 30 configured to receive the groove section alignment pin 28 , and a countersunk hole 31 which is aligned with mounting hole 29 .
  • a threaded mounting screw 32 is passed through tongue section countersunk hole 31 and threaded into groove section mounting hole 29 .
  • each mounting flange 21 is coupled to its two oppositely disposed and adjacent mounting flanges 21 with the tongue and groove sections providing limited movement therebetween.
  • the recess 23 extends from the bottom surface 24 less than the full thickness of the mounting flange and thus leaves a relatively thin section 35 of the flange.
  • the recess 23 also includes a semi-circular inwardly opening aperture or slot 38 , which interrupts the inward surface 25 at a relatively narrow throat 39 .
  • the slot 38 is generally aligned with the threaded mounting hole 19 of the bottom mounting plate 14 .
  • An elastomeric isolation means in the form of a rubber grommet 40 , is configured to be received substantially within the recess 23 and particularly supported on the thin sections 35 within the slot 38 .
  • the grommets 40 have a generally cubic shape and are provided with an internal clearance opening 42 which extends axially therethrough.
  • the side walls of the grommet 40 are provided with opposed outwardly opening grooves 44 , which grooves are proportioned to receive the sections 35 of the mounting flange, at the slots 38 , when the grommet is pressed into place and seated in the recess 23 .
  • the grommet When the grommet is thus seated, a portion of the grommet extends below the section 35 into the recess 23 , but the axial thickness of the grommet 40 is such that the portion which extends into the recess is fully contained within the recess. Another portion of the grommet 40 extends above the upper surface of the mounting flange when the grommet is inserted. The narrow throat 39 tends to retain the grommet in place.
  • the opening 42 in the grommet is adapted to receive drive means in the form of a threaded headed stud 50 .
  • the stud 50 is only partially threaded at its outer end 52 .
  • the threads are intended to be received in one of the mounting holes 19 of the mounting plate 14 .
  • the stud 50 extends into the mounting plate only to a predetermined depth defined by the depth of the threads 52 , and when the same are inserted through the grommet openings 42 , the mounting flanges 21 are suspended below the mounting plate on the enlarged heads 51 of the studs 50 .
  • the grommets 40 preferably are not drawn into direct contact with the mounting plate 14 .
  • the grommets 40 provides means together with the stud 50 for suspending the blade irons 16 from the motor mounting plate 14 , thereby eliminating a metal-to-metal contact.
  • the entire weight of the fan blade 17 and blade irons 16 is carried on the studs 50 through the resilient coupling defined by the grommets 40 .
  • the enlarged head 51 of the stud is received adjacent the outer surface of the grommet 40 , and thus the weight of the blade irons and blades normally is transmitted to the heads fo the studs through the grommets 40 .
  • the connected blade irons with the captured grommets 40 is free to slide slightly up and down on the threaded studs. The purpose of the slight axial freedom of movement is to provide full isolation of the blade irons from the mounting plate 14 .
  • the invention provides an elastomeric attachment, free of any direct metal-to-metal contact, between the blade irons 16 and the motor mounting plate 14 . Any vibrations in the motor will tend to be absorbed in the grommets 40 , thereby effectively isolating the blades 17 from the effects of such direct transmission of vibration.
  • the current invention is not intended to be limited to ceiling fans and may apply equally to all types of fans. It should also be understood that the current invention is not limited to a certain number of blades or blade irons.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US12/055,998 2008-03-26 2008-03-26 Fan blade iron isolation Abandoned US20090246028A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US12/055,998 US20090246028A1 (en) 2008-03-26 2008-03-26 Fan blade iron isolation
CA002659707A CA2659707A1 (en) 2008-03-26 2009-03-23 Fan blade iron isolation
MX2009003192A MX2009003192A (es) 2008-03-26 2009-03-25 Aislamiento de cuchilla para aspa de ventilador.
CNA2009101303180A CN101555882A (zh) 2008-03-26 2009-03-26 风扇叶片铁隔离
TW098109975A TW200949079A (en) 2008-03-26 2009-03-26 Fan blade iron isolation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/055,998 US20090246028A1 (en) 2008-03-26 2008-03-26 Fan blade iron isolation

Publications (1)

Publication Number Publication Date
US20090246028A1 true US20090246028A1 (en) 2009-10-01

Family

ID=41117534

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/055,998 Abandoned US20090246028A1 (en) 2008-03-26 2008-03-26 Fan blade iron isolation

Country Status (5)

Country Link
US (1) US20090246028A1 (es)
CN (1) CN101555882A (es)
CA (1) CA2659707A1 (es)
MX (1) MX2009003192A (es)
TW (1) TW200949079A (es)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD716437S1 (en) * 2014-01-17 2014-10-28 Patterson Ventilation Company, Inc. Ceiling fan hub and blade assembly
US9039377B2 (en) 2010-08-09 2015-05-26 Lowe's Companies, Inc. Fan assemblies and methods for assembling same
US20150198175A1 (en) * 2014-01-16 2015-07-16 Hsun-Yu Lin Ceiling Fan
USD744080S1 (en) * 2014-06-09 2015-11-24 Air Cool Industrial Co., Ltd. Fan blade bracket
USD778427S1 (en) * 2014-12-10 2017-02-07 Minka Lighting, Inc. Ceiling fan blade iron
USD778421S1 (en) 2014-12-10 2017-02-07 Minka Lighting, Inc. Combination ceiling fan and light fixture
USD778426S1 (en) 2014-12-10 2017-02-07 Minka Lighting, Inc. Ceiling fan housing with light fixture
US9651058B1 (en) 2013-07-05 2017-05-16 Litex Industries, Limited T-shaped fan blade arm attachment
USD787038S1 (en) * 2015-08-27 2017-05-16 Hunter Fan Company Blade iron arm for a ceiling fan
USD787040S1 (en) * 2015-08-27 2017-05-16 Hunter Fan Company Medallion for a blade iron of a ceiling fan
USD799683S1 (en) * 2016-08-12 2017-10-10 Air Cool Industrial Co., Ltd. Fan blade bracket
USD800296S1 (en) * 2016-08-12 2017-10-17 Air Cool Industrial Co., Ltd. Fan blade bracket
USD808511S1 (en) 2015-12-22 2018-01-23 Minka Lighting, Inc. Combination ceiling fan and light fixture
USD818574S1 (en) * 2015-12-28 2018-05-22 Minka Lighting, Inc. Ceiling fan blade iron
USD818571S1 (en) 2015-12-22 2018-05-22 Minka Lighting, Inc. Ceiling fan housing with light fixture
USD834700S1 (en) * 2017-01-06 2018-11-27 Minka Lighting, Inc. Ceiling fan blade iron
USD877318S1 (en) * 2016-03-07 2020-03-03 Hunter Fan Company Ceiling fan blade iron
USD900300S1 (en) * 2019-03-25 2020-10-27 Air Cool Industrial Co., Ltd. Fan blade bracket
USD904596S1 (en) * 2016-10-27 2020-12-08 Hunter Fan Company Ceiling fan blade iron
US20210190081A1 (en) * 2019-12-23 2021-06-24 Hunter Fan Company Ceiling fan blade and grommet
US11168698B2 (en) * 2018-08-27 2021-11-09 Hunter Fan Company Ceiling fan
US12000407B1 (en) * 2023-04-17 2024-06-04 Hoteck Inc. Ceiling fan blade assembly structure

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US585250A (en) * 1897-06-29 Combined electric fan and electrolier
US1856017A (en) * 1929-08-09 1932-04-26 Hunter Fan & Motor Company Adjustable fan
US2119398A (en) * 1937-09-28 1938-05-31 Gen Electric Combined ceiling fan and light
US2270583A (en) * 1940-05-27 1942-01-20 Forton George Sound insulated drive connection
US2299010A (en) * 1939-08-15 1942-10-13 Aircooled Motors Corp Fan construction for air-cooled engines
US2557201A (en) * 1948-07-26 1951-06-19 Punt Simon Centrifugal fan
US2559831A (en) * 1946-10-09 1951-07-10 Joseph T Roffy Fan construction
US2678104A (en) * 1951-03-15 1954-05-11 Gen Motors Corp Resiliently mounted rotary fan
US4382400A (en) * 1981-01-09 1983-05-10 Clarence Stutzman Combined ceiling mounted fan and lighting fixture
US4391570A (en) * 1981-04-29 1983-07-05 Clarence Stutzman Apparatus for cooling a ceiling mounted fan motor
US4396352A (en) * 1981-07-17 1983-08-02 Trw Inc. Pitch adjustment for blades of ceiling fan
US4402649A (en) * 1981-07-29 1983-09-06 Laurel Charles R Ceiling fan with self-contained lighting
US4511310A (en) * 1984-03-02 1985-04-16 Robbins & Myers, Inc. Ceiling fan blade isolation
US5944487A (en) * 1996-08-09 1999-08-31 Hunter Fan Company Blade ring attachment system
US5954449A (en) * 1998-11-17 1999-09-21 Wu; San-Chi Connecting device for connecting a fan blade to a rotor of a motor of a ceiling fan
US6210117B1 (en) * 1999-09-03 2001-04-03 King Of Fans, Inc. Device for connecting a fan blade to a rotor of a ceiling fan motor
US6872053B2 (en) * 1997-05-05 2005-03-29 King Of Fans Quick install blade arms for ceiling fans
US7500831B2 (en) * 2006-05-04 2009-03-10 Hunter Fan Company Self balancing fan

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US585250A (en) * 1897-06-29 Combined electric fan and electrolier
US1856017A (en) * 1929-08-09 1932-04-26 Hunter Fan & Motor Company Adjustable fan
US2119398A (en) * 1937-09-28 1938-05-31 Gen Electric Combined ceiling fan and light
US2299010A (en) * 1939-08-15 1942-10-13 Aircooled Motors Corp Fan construction for air-cooled engines
US2270583A (en) * 1940-05-27 1942-01-20 Forton George Sound insulated drive connection
US2559831A (en) * 1946-10-09 1951-07-10 Joseph T Roffy Fan construction
US2557201A (en) * 1948-07-26 1951-06-19 Punt Simon Centrifugal fan
US2678104A (en) * 1951-03-15 1954-05-11 Gen Motors Corp Resiliently mounted rotary fan
US4382400A (en) * 1981-01-09 1983-05-10 Clarence Stutzman Combined ceiling mounted fan and lighting fixture
US4391570A (en) * 1981-04-29 1983-07-05 Clarence Stutzman Apparatus for cooling a ceiling mounted fan motor
US4396352A (en) * 1981-07-17 1983-08-02 Trw Inc. Pitch adjustment for blades of ceiling fan
US4402649A (en) * 1981-07-29 1983-09-06 Laurel Charles R Ceiling fan with self-contained lighting
US4511310A (en) * 1984-03-02 1985-04-16 Robbins & Myers, Inc. Ceiling fan blade isolation
US5944487A (en) * 1996-08-09 1999-08-31 Hunter Fan Company Blade ring attachment system
US6872053B2 (en) * 1997-05-05 2005-03-29 King Of Fans Quick install blade arms for ceiling fans
US5954449A (en) * 1998-11-17 1999-09-21 Wu; San-Chi Connecting device for connecting a fan blade to a rotor of a motor of a ceiling fan
US6210117B1 (en) * 1999-09-03 2001-04-03 King Of Fans, Inc. Device for connecting a fan blade to a rotor of a ceiling fan motor
US7500831B2 (en) * 2006-05-04 2009-03-10 Hunter Fan Company Self balancing fan

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9039377B2 (en) 2010-08-09 2015-05-26 Lowe's Companies, Inc. Fan assemblies and methods for assembling same
US9651058B1 (en) 2013-07-05 2017-05-16 Litex Industries, Limited T-shaped fan blade arm attachment
US9512855B2 (en) * 2014-01-16 2016-12-06 Hsun-Yu Lin Ceiling fan
US20150198175A1 (en) * 2014-01-16 2015-07-16 Hsun-Yu Lin Ceiling Fan
USD716437S1 (en) * 2014-01-17 2014-10-28 Patterson Ventilation Company, Inc. Ceiling fan hub and blade assembly
USD744080S1 (en) * 2014-06-09 2015-11-24 Air Cool Industrial Co., Ltd. Fan blade bracket
USD778421S1 (en) 2014-12-10 2017-02-07 Minka Lighting, Inc. Combination ceiling fan and light fixture
USD778426S1 (en) 2014-12-10 2017-02-07 Minka Lighting, Inc. Ceiling fan housing with light fixture
USD778427S1 (en) * 2014-12-10 2017-02-07 Minka Lighting, Inc. Ceiling fan blade iron
USD787038S1 (en) * 2015-08-27 2017-05-16 Hunter Fan Company Blade iron arm for a ceiling fan
USD787040S1 (en) * 2015-08-27 2017-05-16 Hunter Fan Company Medallion for a blade iron of a ceiling fan
USD808511S1 (en) 2015-12-22 2018-01-23 Minka Lighting, Inc. Combination ceiling fan and light fixture
USD818571S1 (en) 2015-12-22 2018-05-22 Minka Lighting, Inc. Ceiling fan housing with light fixture
USD818574S1 (en) * 2015-12-28 2018-05-22 Minka Lighting, Inc. Ceiling fan blade iron
USD954250S1 (en) 2016-03-07 2022-06-07 Hunter Fan Company Ceiling fan motor housing
USD877318S1 (en) * 2016-03-07 2020-03-03 Hunter Fan Company Ceiling fan blade iron
USD800296S1 (en) * 2016-08-12 2017-10-17 Air Cool Industrial Co., Ltd. Fan blade bracket
USD799683S1 (en) * 2016-08-12 2017-10-10 Air Cool Industrial Co., Ltd. Fan blade bracket
USD904596S1 (en) * 2016-10-27 2020-12-08 Hunter Fan Company Ceiling fan blade iron
USD834700S1 (en) * 2017-01-06 2018-11-27 Minka Lighting, Inc. Ceiling fan blade iron
US11168698B2 (en) * 2018-08-27 2021-11-09 Hunter Fan Company Ceiling fan
USD900300S1 (en) * 2019-03-25 2020-10-27 Air Cool Industrial Co., Ltd. Fan blade bracket
US20210190081A1 (en) * 2019-12-23 2021-06-24 Hunter Fan Company Ceiling fan blade and grommet
US11732724B2 (en) * 2019-12-23 2023-08-22 Hunter Fan Company Ceiling fan blade and grommet
US20230340961A1 (en) * 2019-12-23 2023-10-26 Hunter Fan Company Ceiling fan blade and grommet
US12000407B1 (en) * 2023-04-17 2024-06-04 Hoteck Inc. Ceiling fan blade assembly structure

Also Published As

Publication number Publication date
CA2659707A1 (en) 2009-09-26
MX2009003192A (es) 2009-09-25
CN101555882A (zh) 2009-10-14
TW200949079A (en) 2009-12-01

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HUNTER FAN COMPANY, TENNESSEE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:RICHARDSON, ANTHONY TODD;REEL/FRAME:020932/0241

Effective date: 20080408

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION