GB2330624A - Fan device with noise reduction - Google Patents

Fan device with noise reduction Download PDF

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Publication number
GB2330624A
GB2330624A GB9722276A GB9722276A GB2330624A GB 2330624 A GB2330624 A GB 2330624A GB 9722276 A GB9722276 A GB 9722276A GB 9722276 A GB9722276 A GB 9722276A GB 2330624 A GB2330624 A GB 2330624A
Authority
GB
United Kingdom
Prior art keywords
noise
reducing
motor
housing
wall
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.)
Withdrawn
Application number
GB9722276A
Other versions
GB9722276D0 (en
Inventor
Samw Hong-Jen Wang
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.)
Individual
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 GB9722276A priority Critical patent/GB2330624A/en
Publication of GB9722276D0 publication Critical patent/GB9722276D0/en
Publication of GB2330624A publication Critical patent/GB2330624A/en
Withdrawn legal-status Critical Current

Links

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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F04D29/664—Sound attenuation by means of sound absorbing material
    • 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
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • 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
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/526—Details of the casing section radially opposing blade tips

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A fan device includes a motor 20 rotatably secured in a housing 10 and a number of fan blades 30 secured to the motor 20 and driven by the motor 20. The housing 10 has a number of holes 12 formed in an inner wall 11 for reducing the noise that may be generated by the motor 20 and the fan blades 30. As shown, the housing 10 includes an outer peripheral wall 15 for forming a chamber 14 between the walls 11, 15 and for receiving a noise reducing material 16. The fan blades 30 may each include one or more panels (32, figs 3, 4, not shown) of wood, plastics or metal, and one or more sheets (33) of noise reducing material (e.g. fibrous or porous materials) for reducing the noise. The panel (32) may include a number of apertures (38) for reducing the noise.

Description

FAN DEVICE HAVING A NOISE REDUCING MECHANISM The invention relates to a fan device having a noise reducing mechanism.
Typical fan devices comprise a motor rotatably received in a housing and a number of fan blades secured to the motor and rotated by the motor in order to circulate the wind. However, both the housing and the fan blades do not provide any mechanism for reducing the noise such that a great noise may normally be generated by the motor and the fan blades of the fan device.
It is accordingly an object of the present invention to provide a fan device including a noise reducing mechanism for reducing the noise that may be generated by the motor and the fan blades.
According to the present invention there is provided a fan device comprising: a) a housing including an inner wall having a number of holes, b) a motor rotatably secured in the housing and received in the inner wall, and c) a number of fan blades secured to the motor and driven by the motor. The holes of the inner wall of the housing are provided for reducing a noise generated by the motor and the fan blades.
The housing includes an outer peripheral wall for defining a chamber between the inner wall and the outer peripheral wall, the fan device further includes a noise reducing material disposed in the chamber for reducing the noise.
The fan blades each includes at least one panel and at least one sheet secured to the panel, the sheet is made of noise reducing material for reducing the noise. The panel includes a number of apertures for reducing the noise.
In the drawings: FIG. 1 is a perspective view of a fan device; FIG. 2 is a cross sectional view taken along lines 2-2 of FIG. 1; FIG. 3 is a cross sectional view taken along lines 3-3 of FIG. 2; and FIG. 4 is a cross sectional view similar to FIG.
3, illustrating another application of the fan blade.
Referring to FIGS. 1-3, a fan device comprises a housing 10 including an inner wall 11 and an outer peripheral wall 15 for forming a chamber 14 between the inner wall 11 and the outer peripheral wall 15. A motor 20 is rotatably secured in the housing 10 and received in the inner wall 11 and a number of fan blades 30 are secured to the motor 20 for being driven by the motor 20. The inner wall 11 includes a number of holes 12 for reducing the noise that may be generated by the motor 20 and the fan blades 30. A noise reducing material 16 is disposed in the chamber 14 for further reducing the noise that may be generated by the motor 20 and the fan blades 30. The noise reducing material 16 may be selected from fiber materials, reeds, straws, rice husks, or porous materials, such as foamable materials.
As shown in FIG. 2, the fan blade 30 includes one or two panels 32 which may be made of wood, plastic or metal materials, and includes one or more sheets 33 of noise reducing material secured to the panels 32 or secured between the panels 32 for further reducing the noise that may be generated by the fan blades 30. The noise reducing material sheet 33 may be selected from fiber materials, or porous materials, such as foamable materials. The panels 32 may each include a number of apertures 38 for further reducing the noise that may be generated by the fan blades 30.
Referring next to FIG. 4, two sheets 33 of noise reducing material may be secured to the upper and the lower portions of the panel 32 for reducing the noise that may be generated by the fan blades 30.

Claims (9)

CLAIMS:
1. A fan device comprising: a) a housing including an inner wall having a plurality of holes, b) a motor rotatably secured in the housing and received in the inner wall, and c) a plurality of fan blades secured to the motor and driven by the motor, the holes of the inner wall of the housing being provided for reducing a noise generated by the motor and the fan blades.
2. The fan device as claimed in claim 1, wherein the housing includes an outer peripheral wall for defining a chamber between the inner wall and the outer peripheral wall, the fan device further includes a noise reducing material disposed in the chamber for reducing the noise.
3. The fan device as claimed in claim 1, wherein the fan blades each includes at least one panel and at least one sheet secured to the at least one panel, the at least one sheet is made of noise reducing material for reducing the noise.
4. The fan device as claimed in claim 3, wherein the at least one panel includes a plurality of apertures for reducing the noise.
5. A fan device comprising: a) a housing, b) a motor rotatably secured in the housing, and c) a plurality of fan blades secured to the motor and driven by the motor, the fan blades each includes at least one panel and at least one sheet secured to the at least one panel, the at least one sheet being made of noise reducing material for reducing a noise generated by the motor and the fan blades.
6. The fan device as claimed in claim 5, wherein the at least one panel includes a plurality of apertures for reducing the noise.
7. The fan device as claimed in claim 5, wherein the housing includes an inner wall having a plurality of holes, the motor is rotatably received in the inner wall, the holes of the inner wall of the housing are provided for reducing the noise.
8. The fan device as claimed in claim 7, wherein the housing includes an outer peripheral wall for defining a chamber between the inner wall and the outer peripheral wall, the fan device further includes a noise reducing material disposed in the chamber for reducing the noise.
9. The fan device substantially as herein described with reference to the accompanying drawings.
GB9722276A 1997-10-23 1997-10-23 Fan device with noise reduction Withdrawn GB2330624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9722276A GB2330624A (en) 1997-10-23 1997-10-23 Fan device with noise reduction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9722276A GB2330624A (en) 1997-10-23 1997-10-23 Fan device with noise reduction

Publications (2)

Publication Number Publication Date
GB9722276D0 GB9722276D0 (en) 1997-12-17
GB2330624A true GB2330624A (en) 1999-04-28

Family

ID=10820894

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9722276A Withdrawn GB2330624A (en) 1997-10-23 1997-10-23 Fan device with noise reduction

Country Status (1)

Country Link
GB (1) GB2330624A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2427653A (en) * 2005-06-29 2007-01-03 Caice Acoustic Air Movement Lt Isolated fan unit
EP1980755A3 (en) * 2007-04-09 2012-05-16 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Noise reducing structure in fan device
CN104454587A (en) * 2014-11-12 2015-03-25 华为技术有限公司 Fan

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1119750A (en) * 1966-07-05 1968-07-10 Trane Co Improved air handling fan apparatus
GB1511625A (en) * 1975-05-14 1978-05-24 Vasiljevic C Muffled axial-flow ventilator
GB1514584A (en) * 1974-11-05 1978-06-14 Sasakura Eng Co Ltd Noise-preventive fan ring for axial flow fans
GB1563439A (en) * 1976-10-21 1980-03-26 Fuetoeber Epueletgep Termekek Centrifugal fan with sound-absorbing means
WO1983004287A1 (en) * 1982-05-28 1983-12-08 Peabody Fans Ventilation fan with noise-attenuating housing
GB2260576A (en) * 1991-09-26 1993-04-21 Mitsubishi Electric Corp Indoor unit of a ventilation system, ventilator and air conditioner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1119750A (en) * 1966-07-05 1968-07-10 Trane Co Improved air handling fan apparatus
GB1514584A (en) * 1974-11-05 1978-06-14 Sasakura Eng Co Ltd Noise-preventive fan ring for axial flow fans
GB1511625A (en) * 1975-05-14 1978-05-24 Vasiljevic C Muffled axial-flow ventilator
GB1563439A (en) * 1976-10-21 1980-03-26 Fuetoeber Epueletgep Termekek Centrifugal fan with sound-absorbing means
WO1983004287A1 (en) * 1982-05-28 1983-12-08 Peabody Fans Ventilation fan with noise-attenuating housing
GB2260576A (en) * 1991-09-26 1993-04-21 Mitsubishi Electric Corp Indoor unit of a ventilation system, ventilator and air conditioner

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2427653A (en) * 2005-06-29 2007-01-03 Caice Acoustic Air Movement Lt Isolated fan unit
GB2427653B (en) * 2005-06-29 2011-02-09 Caice Acoustic Air Movement Ltd Ventilation apparatus
EP1980755A3 (en) * 2007-04-09 2012-05-16 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Noise reducing structure in fan device
CN104454587A (en) * 2014-11-12 2015-03-25 华为技术有限公司 Fan
US10161420B2 (en) 2014-11-12 2018-12-25 Huawei Technologies Co., Ltd. Fan

Also Published As

Publication number Publication date
GB9722276D0 (en) 1997-12-17

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)