US20200132080A1 - Fan device - Google Patents

Fan device Download PDF

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Publication number
US20200132080A1
US20200132080A1 US16/663,932 US201916663932A US2020132080A1 US 20200132080 A1 US20200132080 A1 US 20200132080A1 US 201916663932 A US201916663932 A US 201916663932A US 2020132080 A1 US2020132080 A1 US 2020132080A1
Authority
US
United States
Prior art keywords
air
fan device
casing body
receiving space
casing
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
US16/663,932
Other languages
English (en)
Inventor
Chien-Jung Chen
Hsin-Hsien Wu
Chih-Tsung Hsu
Chin-Hui PAN
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.)
Yen Sun Technology Corp
Original Assignee
Yen Sun Technology Corp
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 Yen Sun Technology Corp filed Critical Yen Sun Technology Corp
Assigned to YEN SUN TECHNOLOGY CORP. reassignment YEN SUN TECHNOLOGY CORP. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, CHIEN-JUNG, HSU, CHIH-TSUNG, PAN, Chin-Hui, WU, HSIN-HSIEN
Publication of US20200132080A1 publication Critical patent/US20200132080A1/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
    • F04D29/66—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
    • F04D29/665—Sound attenuation by means of resonance chambers or interference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/167—Operating by means of fibrous or porous elements, e.g. with sponge rotors
    • 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • 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

Definitions

  • the disclosure relates to a fan device, and more particularly to a fan device having a casing body and a porous plate to define a noise-reduction room.
  • a conventional noise-reduction fan assembly includes a fan 10 and a noise-reduction device 1 mounted to the fan 10 .
  • the noise-reduction device 1 includes a casing 11 connected to the fan 10 , a plurality of drivenable fan blades 12 , a surrounding plate 13 , and a sound-absorbing member 14 .
  • the casing 11 defines an inner space 110 .
  • the drivenable fan blades 12 are made of a sound-absorbing material and disposed in the inner space 110 .
  • the surrounding plate 13 is disposed in the inner space 110 and divides the inner space 110 into a central room 132 for receiving the drivenable fan blades 12 and a sound-absorbing room. 130 surrounding the central room 132 .
  • the sound-absorbing member 14 is filled in the sound-absorbing room 130 .
  • the surrounding plate 13 has a plurality of through holes 131 to spatially communicate the central room 132 with the sound-absorbing room 130 . Airflow generated by the fan 10 will drive rotation of the drivenable fan blades 12 and then the airflow will be guided into the central room 132 . The airflow is also guided from the central room 132 into the sound-absorbing room 130 through the through holes 131 of the surrounding plate 13 .
  • the noise generated by the fan 10 can be partially absorbed by the drivenable fan blades 12 and partially absorbed by the noise-absorbing member 14 filled in the sound-absorbing room 130 .
  • the aforementioned conventional noise-reduction fan assembly requires installation of the drivenable fan blades 12 , and the drivenable fan blades 12 are required to be adjusted based on a few parameters of the fan 10 , such as rotational performance and an integral structural configuration. Hence, the design and manufacturing of the conventional noise-reduction device 1 is relatively complicated.
  • another conventional noise-reduction fan assembly includes a fan 20 and a noise-reduction device 2 connected to the fan 20 .
  • the noise-reduction device 2 includes a resonator 21 and a status indication unit 220 .
  • the fan 20 is exemplified to be a heat-dissipating fan for dissipating heat of an electronic apparatus, such as a central processing unit 22 .
  • the status indication unit 220 is connected between the resonator 21 and the central processing unit 22 , and is capable of indicating an operational status of the central processing unit 22 .
  • the resonator 21 includes a casing 211 that defines an inner chamber 210 in spatial communication with the fan 20 , a clapboard 212 , an elastic component 213 , and two thermoelectric components 214 capable of detecting noise through noise-responsive deformation.
  • the clapboard 212 is disposed in the inner chamber 210 , and divides the inner chamber 210 into a space 201 in spatial communication with the fan 20 and a resonance room 200 .
  • the elastic component 213 is received in the resonance room 200 and is connected to the clapboard 212 and the casing 211 so that the clapboard 212 is movable relative to the casing 211 .
  • thermoelectric components 214 are disposed in the resonance room 200 and located respectively on two symmetrical sides of the clapboard 212 .
  • the thermoelectric component 214 is in signal communication with the status indication unit 220 and is deformable accordingly. Deformation of the thermoelectric components 214 will move the clapboard 212 to adjust a resonance volume of the resonance room 200 so as to eliminate the noise generated by the fan 20 .
  • the aforementioned conventional noise-reduction fan assembly also has complicated structure and signal communication. Hence, there is plenty of room for improvement in the structural design of the conventional noise-reduction fan assembly.
  • an object of the disclosure is to provide a fan device that can alleviate at least one of the drawbacks of the prior art.
  • a fan device includes a casing unit and a fan impeller unit mounted in the casing unit.
  • the casing unit has an axis and includes a casing body, a porous plate, and an air-entering tube.
  • the casing body is formed with a receiving space and an air outlet port in spatial communication with the receiving space.
  • the porous plate is formed with a plurality of through holes and is disposed in the receiving space to divide the receiving space into an air-flowing room and a noise-reduction room aligned with and spaced apart from each other along the axis.
  • the air-entering tube is connected to the casing body and is in spatial communication with the air-flowing room.
  • the fan impeller unit is disposed in the air-flowing room of the receiving space and is rotatable about the axis to generate airflow that partially flows from the air-flowing room into the noise-reduction room through the through holes of the porous plate.
  • FIG. 1 is a cross-sectional view illustrating a conventional noise-reduction fan assembly
  • FIG. 2 is a schematic view illustrating another conventional noise-reduction fan assembly
  • FIG. 3 is an exploded view illustrating a first embodiment of a fan device according to the disclosure
  • FIG. 4 is a perspective view illustrating the first embodiment
  • FIG. 5 is a cross-sectional view illustrating the first embodiment
  • FIG. 6 is a cross-sectional view illustrating a second embodiment of a fan device according to the disclosure.
  • FIG. 7 is an exploded view illustrating a third embodiment of a fan device according to the disclosure.
  • FIG. 8 is a cross-sectional view illustrating the third embodiment.
  • FIG. 9 is a cross-sectional view illustrating a fourth embodiment of a fan device according to the disclosure.
  • a first embodiment of a fan device includes a casing unit 3 and a fan impeller unit 4 that is mounted in the casing unit 3 .
  • the casing unit 3 has an axis (A) and includes a casing body 31 , a porous plate 32 , an air-entering tube 33 , and an air guiding member 34 .
  • the casing body 31 is formed with a receiving space 310 and an air outlet port 318 in spatial communication with the receiving space 310 .
  • the casing body 31 of the casing unit 3 includes a base 312 and a cover 311 connected to the base 312 to cooperatively define the receiving space 310 .
  • the porous plate 32 is formed with a plurality of through holes 329 and is disposed in the receiving space 310 to divide the receiving space 310 into an air-flowing room 301 and a noise-reduction room 302 aligned with and spaced apart from each other along the axis (A).
  • the base 312 cooperates with the porous plate 32 to define the noise-reduction room 302 .
  • the cover 311 cooperates with the porous plate 32 to define the air-flowing room 301 .
  • the porous plate 32 is further formed with an inner tube-communicating through hole 321 spaced apart from the through holes 329 .
  • the air-entering tube 33 is connected to the casing body 31 and is in spatial communication with the air-flowing room 301 .
  • the air-entering tube 33 peripherally and outwardly extends from and is in spatial communication with the inner tube-communicating through hole 321 .
  • the air guiding member 34 is disposed at the air outlet port 318 of the casing body 31 and is in spatial communication with the receiving space 310 of the casing body 31 .
  • the air guiding member 34 may peripherally protrude from the air outlet port 318 of the casing body 31 and tapered along a direction away from the casing body 31 , such that an airflow flowing through the air guiding member 34 can be collectively pressurized to have an increased air pressure.
  • the fan impeller unit 4 is disposed in the air-flowing room 301 of the receiving space 310 and is rotatable about the axis (A) to generate an airflow that partially flows from the air-flowing room 301 into the noise-reduction room 302 through the through holes 329 of the porous plate 32 .
  • the fan impeller unit 4 when the fan impeller unit 4 is in operation, ambient air is guided into the air-flowing room 301 through the air-entering tube 33 and the inner tube-communicating through hole 321 of the porous plate 21 .
  • the airflow is generated from the air flowing into the air-flowing room 301 .
  • a main stream of the airflow mainly flows from the air-flowing room 301 toward the air outlet port 318 .
  • a tributary of the airflow flows from the air-flowing room 301 into the noise-reduction room 302 through the through holes 329 of the porous plate 32 .
  • the configuration of the casing unit 3 such as the shape and the internal volume of the noise-reduction room 302 is designed in accordance with the noise frequency of the fan impeller unit 4 .
  • the airflow flowing into the noise-reduction room 302 through the through holes 329 of the porous plate 32 is dispersed by the through holes 329 before entering the noise-reduction room 302 , so that wind shear produced and concentrated at a certain position can be avoided to reduce the noise.
  • the fan device of the second embodiment further includes a sound-absorption member disposed in the noise-reduction room 302 .
  • the sound-absorption member 5 is porous.
  • the noise is further absorbed by the sound-absorption member 5 .
  • the volume and the shape of the noise-reduction room 302 can be adjusted by the filling manner of the sound-absorption member 5 therein in compliance with the desired configuration of the casing unit 3 .
  • the base 312 includes a bottom plate 316 that is distal to the cover 311 and that is formed with an outer tube-communicating through hole 317 .
  • the air-entering tube 33 peripherally and outwardly extends from and is in spatial communication with the outer tube-communicating through hole 317 .
  • a fourth embodiment of the fan device according to the disclosure is illustrated.
  • the fourth embodiment is structurally similar to that of the first embodiment.
  • the casing body 31 of the casing unit 3 is formed with an outer tube-communicating through hole 317 ′ in spatial communication with the receiving space 310 .
  • the outer tube-communicating through hole 317 ′ and the porous plate 32 are located at two opposite sides of the fan impeller unit 4 along the axis (A), such that the noise-reduction room 302 is distal to the air-entering tube 33 .
  • the air-entering tube 33 peripherally and outwardly extends from and is in spatial communication with the outer tube-communicating through hole 317 ′.
  • the airflow generated by the fan impeller unit 4 partially flows from the air-flowing room 301 into the noise-reduction room 302 through the porous plate 32 , and the airflow is simultaneously dispersed by the porous plate 32 to reduce wind shear. Therefore, the noise generated by the fan impeller unit 4 of the fan device according to the disclosure can be reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US16/663,932 2018-10-26 2019-10-25 Fan device Abandoned US20200132080A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW107137959 2018-10-26
TW107137959A TWI735813B (zh) 2018-10-26 2018-10-26 降噪風扇裝置

Publications (1)

Publication Number Publication Date
US20200132080A1 true US20200132080A1 (en) 2020-04-30

Family

ID=65351967

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/663,932 Abandoned US20200132080A1 (en) 2018-10-26 2019-10-25 Fan device

Country Status (3)

Country Link
US (1) US20200132080A1 (de)
EP (1) EP3643926B1 (de)
TW (1) TWI735813B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023272928A1 (zh) * 2021-06-29 2023-01-05 广东美的制冷设备有限公司 离心风机及空调器
US11668328B2 (en) * 2020-07-27 2023-06-06 Carrier Corporation Noise reduction device for outlet side of fan and heat exchange system including the same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3140898B2 (ja) * 1993-12-02 2001-03-05 三菱電機株式会社 送風装置及び該装置の吸込パネル並びに該装置の整流ガイド
US8123468B2 (en) * 2006-11-02 2012-02-28 Panasonic Corporation Centrifugal fan
CN107339264A (zh) * 2017-03-15 2017-11-10 宁波方太厨具有限公司 一种单进风吸油烟机的风机系统辅助降噪装置
CN207513930U (zh) * 2017-10-12 2018-06-19 宁波方太厨具有限公司 一种吸油烟机用抽吸装置
CN207920914U (zh) * 2018-01-25 2018-09-28 台达电子工业股份有限公司 风扇

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11668328B2 (en) * 2020-07-27 2023-06-06 Carrier Corporation Noise reduction device for outlet side of fan and heat exchange system including the same
WO2023272928A1 (zh) * 2021-06-29 2023-01-05 广东美的制冷设备有限公司 离心风机及空调器

Also Published As

Publication number Publication date
EP3643926B1 (de) 2021-12-22
TW202016434A (zh) 2020-05-01
EP3643926A1 (de) 2020-04-29
TWI735813B (zh) 2021-08-11

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