EP3421891A1 - Küchenhaube - Google Patents

Küchenhaube Download PDF

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Publication number
EP3421891A1
EP3421891A1 EP18176223.8A EP18176223A EP3421891A1 EP 3421891 A1 EP3421891 A1 EP 3421891A1 EP 18176223 A EP18176223 A EP 18176223A EP 3421891 A1 EP3421891 A1 EP 3421891A1
Authority
EP
European Patent Office
Prior art keywords
air
pipe
air intake
air exhaust
guide pipe
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.)
Granted
Application number
EP18176223.8A
Other languages
English (en)
French (fr)
Other versions
EP3421891B1 (de
Inventor
Chi Liu
Liyong Qing
Yunming Xiang
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3421891A1 publication Critical patent/EP3421891A1/de
Application granted granted Critical
Publication of EP3421891B1 publication Critical patent/EP3421891B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes

Definitions

  • the present invention relates to the technical field of kitchen appliances, and specifically relates to a low-noise cooker hood.
  • cooker hoods used by all families all exhaust smoke to a public pipeline, and a relatively high static pressure is formed inside the public pipeline when a plurality of users uses the cooker hoods at the same time.
  • a cooker hood is required to provide a higher static pressure.
  • a cooker hood generates loud noise when improving the static pressure to provide the enough air volume, and consequently, the comfort of using the cooker hood by a user is affected.
  • a technical problem that the present invention resolves is how to reduce noise generated when a cooker hood runs.
  • the present invention provides a cooker hood, including: a housing, and a fan mounted in the housing, where the fan includes an air intake vent and an air exhaust vent; and further including: an air guide pipe mounted in the housing, where the air guide pipe includes an air intake vent and an air exhaust vent, and the air exhaust vent of the air guide pipe is connected to the air intake vent of the fan.
  • a pipe wall of the air guide pipe is provided with acoustic attenuation micro holes.
  • the fan has a volute, and the surface of the volute is provided with acoustic attenuation micro holes.
  • the cooker hood further includes: an external air guide pipe, where the external air guide pipe is mounted in the housing and is sleeved outside the air guide pipe; and a pipe wall of the external air guide pipe is provided with acoustic attenuation micro holes.
  • the cooker hood further includes: a plurality of flow guide plates, where the flow guide plate is mounted in the air guide pipe; and the surface of the flow guide plates is provided with acoustic attenuation micro holes.
  • the cooker hood further includes: a plurality of first thin plates, where the first thin plate is mounted in the air guide pipe and is located below the flow guide plate; and the surface of the first thin plate is provided with acoustic attenuation micro holes.
  • the housing includes: an upper housing, where the upper housing includes an air intake vent and an air exhaust vent, and the fan and the air guide pipe are mounted in the upper housing; and a lower housing, where the lower housing includes left and right air intake openings and an air exhaust opening, and the air intake vent of the upper housing is connected to the air exhaust opening of the lower housing.
  • the cooker hood further includes: a fan separator mounted in the upper housing, where the fan separator separates the fan from the air guide pipe, so that the fan and the air guide pipe are in two chambers of the upper housing.
  • the lower housing includes: a left air intake portion, where the left air intake portion is provided with a left air intake opening; a right air intake portion, where the right air intake portion is provided with a right air intake opening; and an air exhaust portion, where the air exhaust portion is provided with an air exhaust opening, the air exhaust portion is located between the left air intake portion and the right air intake portion, and a cavity of the air exhaust portion is respectively in communication with a cavity of the left air intake portion and a cavity of the right air intake portion.
  • the cooker hood further includes: a left air exhaust pipe and a right air exhaust pipe that are mounted in the air exhaust portion, where the left air exhaust pipe is respectively connected to the cavity of the left air intake portion and the air exhaust opening, the right air exhaust pipe is respectively connected to the cavity of the right air intake portion and the air exhaust opening, and pipe walls of the left air exhaust pipe and the right air exhaust pipe are provided with acoustic attenuation micro holes.
  • a three-way air exhaust pipe is mounted in the cavity of the air exhaust portion; the three-way air exhaust pipe is respectively connected to the cavity of the left air intake portion, the cavity of the right air intake portion, and the air exhaust opening; and a pipe wall of the three-way air exhaust pipe is provided with acoustic attenuation micro holes.
  • the cooker hood further includes: a plurality of second thin plates, where the second thin plate is mounted in the three-way air exhaust pipe, and the second thin plate is provided with acoustic attenuation micro holes.
  • a left air intake pipe is mounted in the left air intake portion, the left air intake pipe is respectively connected to the left air intake opening and the cavity of the air exhaust portion, and a pipe wall of the left air intake pipe is provided with acoustic attenuation micro holes.
  • a right air intake pipe is mounted in the right air intake portion, the right air intake pipe is respectively connected to the right air intake opening and the cavity of the air exhaust portion, and a pipe wall of the right air intake pipe is provided with acoustic attenuation micro holes.
  • a cooker hood including a housing, a fan and an air guide pipe, where the fan and the air guide pipe are mounted in the housing.
  • the fan and the air guide pipe both have an air intake vent and an air exhaust vent, where the air exhaust vent of the air guide pipe is connected to the air intake vent of the fan. After the fan starts working, smoke enters the air intake vent of the air guide pipe, passes through the air exhaust vent of the air guide pipe and enters the fan, and finally is exhausted to a public pipeline by the fan.
  • a pipe wall of the air guide pipe is provided with a plurality of acoustic attenuation micro holes, noise generated when the cooker hood runs leaks out of the acoustic attenuation micro holes on the air guide pipe when passing through the air guide pipe, and the noise is reflected in space between the pipe wall of the air guide pipe and the housing back and forth for a plurality of times and is reduced after being reflected for the plurality of times, thereby achieving an effect of reducing the noise of the cooker hood.
  • a low-noise cooker hood 1 which includes a housing 30, a fan 11 and an air guide pipe 12.
  • the housing 30 includes an upper housing 10 and a lower housing 20, and a first separator 31 is mounted between the upper housing 10 and the lower housing 20.
  • the fan 11 and the air guide pipe 12 are both mounted in the upper housing 10 of the housing 30.
  • the fan and the air guide pipe are not limited to be mounted only in the upper housing, and may be mounted in the lower housing.
  • a first part 101 and a second part 102 are included in the upper housing 10 in FIG. 3 to better present a mounting structure in the upper housing 10.
  • the upper housing 10 has an air inlet 10a and an air outlet 10b.
  • the fan 11 has an air intake vent 11 a and an air exhaust vent 11b, where the air exhaust vent 11b of the fan is aligned with the air outlet 10b of the upper housing 10.
  • the air guide pipe 12 has an air intake vent 12a and an air exhaust vent 12b, where the air intake vent 12a of the air guide pipe 12 is aligned with the air inlet 10a of the upper housing 10, and the air exhaust vent 12b of the air guide pipe 12 is connected to the air intake vent 11a of the fan 11.
  • a pipe wall of the air guide pipe 12 is provided with a plurality of acoustic attenuation micro holes.
  • the noise leaks out of the acoustic attenuation micro holes on the air guide pipe 12, and the noise is reflected in space between the pipe wall of the air guide pipe 12 and the upper housing 10 back and forth for a plurality of times and is reduced after being reflected for the plurality of times, thereby achieving an effect of reducing the noise of the cooker hood 1.
  • the cooker hood 1 further includes a fan separator 16 mounted in the upper housing 10, the fan separator 16 separates the upper housing 10 into two chambers, and the fan 11 and the air guide pipe 12 are in the two chambers separately.
  • the fan separator 16 has an opening 161, and an air intake vent 11a of the fan 11 and an air exhaust vent 12b of the air guide pipe 12 are respectively aligned with the opening 161 on the fan separator 16.
  • the fan 11 has a volute 111, and the surface of the volute 111 is provided with a plurality of acoustic attenuation micro holes. Noise generated when the fan 11 works leaks out of the acoustic attenuation micro holes on the surface of the volute 111, is reflected in space between the volute 111 and the upper housing 10 back and forth, and is reduced after being reflected for a plurality of times, thereby achieving an effect of reducing the noise.
  • An external air guide pipe 13 is further mounted in the upper housing 10, and the external air guide pipe 13 is sleeved outside the air guide pipe 12.
  • a pipe wall of the external air guide pipe 13 is provided with a plurality of acoustic attenuation micro holes. After the noise of the smoke leaks out of the acoustic attenuation micro holes of the air guide pipe 12, a part of the noise is reflected in space between the air guide pipe 12 and the external air guide pipe 13 back and forth, and the other part of the noise leaks out of the acoustic attenuation micro holes of the external air guide pipe 13 and is reflected back and forth in space between the external air guide pipe 13 and the upper housing 10.
  • using two layers of air guide pipes can improve a noise reduction effect.
  • Flow guide plates 14 are mounted in the air guide pipe 12, and the flow guide plates 14 dispersedly suck the smoke in the air guide pipe 12, to avoid that the smoke centers on a middle part of the air guide pipe 12 and is rare on two sides of the air guide pipe 12, so that the smoke generates an even pressure to the air guide pipe 12.
  • the surface of each flow guide plate 14 is provided with a plurality of acoustic attenuation micro holes. When passing through the flow guide plate 14, the noise of the smoke leaks out of the acoustic attenuation micro holes of the flow guide plate 14 and is reflected between neighboring flow guide plates 14 back and forth.
  • three flow guide plates 14 are mounted in the air guide pipe 12, and more flow guide plates may be used in an air guide pipe in another embodiment.
  • First thin plates 15 are further mounted in the air guide pipe 12, and the first thin plates 15 are located below the flow guide plate 14.
  • the smoke When entering the air guide pipe 12 from the air intake vent 12a of the air guide pipe 12, the smoke first passes through a narrow gap formed between neighboring first thin plates 15, so that a speed of the smoke can be reduced, to prevent the smoke from striking the air guide pipe 12.
  • the surface of each first thin plate 15 is provided with a plurality of attenuation micro holes. When passing through the first thin plate 15, the noise of the smoke leaks out of the acoustic attenuation micro holes of the first thin plate 15 and is reflected between neighboring first thin plates 15 back and forth.
  • first thin plates 15 are parallel to each other, and the surface of the first thin plate 15 is a curved surface and a cross-section thereof is "S" shaped.
  • the noise is reflected on the "S" shaped surface for a plurality of times when passing through the first thin plate 15 having the "S" shaped cross-section, thereby achieving a better noise reduction effect.
  • first thin plates may not be parallel to each other, and the surface of the first thin plate may be a plane.
  • the housing 30 is divided into two parts, and includes an upper housing 10 and a lower housing 20.
  • the upper housing 10 has an air inlet 10a and an air outlet 10b.
  • the lower housing 20 has an air intake surface 20a and an air exhaust surface 20b, and the air intake surface 20a is used for facing a cooktop that generates smoke, and the air exhaust surface 20b is used for connecting to the upper housing 10.
  • the air intake surface 20a has a left air intake opening 201a and a right air exhaust opening 202a
  • the air exhaust surface 20b has an air exhaust opening 203b
  • the air inlet 10a of the upper housing 10 is connected to the air exhaust opening 203b of the lower housing 20.
  • the air exhaust surface 20b of the lower housing 20 is parallel to the horizontal plane, and an angle is formed between the air intake surface 20a and the horizontal plane.
  • the smoke is sucked from the left air intake opening 201a or the right air intake opening 202a after the fan 11 starts working, flows out of the air exhaust opening 203b to enter the air guide pipe 12 of the upper housing 10, then enters the fan 11 through the air guide pipe 12, and finally is exhausted outside the cooker hood 1 by the fan 11 through the air exhaust vent 11b of the fan 11.
  • the lower housing 20 includes a left air intake portion 201, a right air intake portion 202 and an air exhaust portion 203.
  • the left air intake portion 201 is provided with the left air intake opening 201a;
  • the right air intake portion 202 is provided with the right air intake opening 202a;
  • the air exhaust portion 203 is located between the left air intake portion 201 and the right air intake portion 202, a cavity of the air exhaust portion 203 is in communication with a cavity of the left air intake portion 201 through a left middle hole 21c and in communication with a cavity of the right air intake portion 202 through a right middle hole 22c, and the air exhaust portion 203 is provided with the air exhaust opening 203b.
  • the air exhaust portion 203 is further mounted with a left air exhaust pipe 231 and a right air exhaust pipe 232, one end of the left air exhaust pipe 231 is connected to the left middle hole 21c between the left air intake portion 201 and the air exhaust portion 203, the other end is connected to the air exhaust opening 203b of the air exhaust portion 203, and the smoke enters from the left middle hole 21c and flows out to the upper housing 10 through the air exhaust opening 203b.
  • two ends of the right air exhaust pipe 232 are respectively connected to the right middle hole 22c between the right air intake portion 202 and the air exhaust portion 203 and the air exhaust opening 203b of the air exhaust vent 203, and the smoke enters from the right middle hole 22c and flows out to the upper housing 10 through the air exhaust opening 203b.
  • a pipe wall of the left air exhaust pipe 231 and a pipe wall of the right air exhaust pipe 232 are provided with a plurality of acoustic attenuation micro holes.
  • the noise leaks out of the acoustic attenuation micro holes of the left air exhaust pipe 231 and the right air exhaust pipe 232 and is reflected in space between the pipe wall of the left air exhaust pipe 231, the pipe wall of the right air exhaust pipe 232 and the air exhaust portion 203 back and forth for a plurality of times, to achieve an effect of reducing the noise.
  • the left air intake portion 201 is mounted with a left air intake pipe 21, and two ends of the left air intake pipe 21 are respectively connected to the left air intake opening 201a and the left middle 21c between the left air intake portion 201 and the air exhaust portion 203.
  • the right air intake portion 202 is mounted with a right air intake pipe 22, and two ends of the right air intake pipe 22 are respectively in communication with the right air intake opening 202a and the right middle hole 22c between the right air intake portion 202 and the air exhaust portion 203.
  • Pipe walls of the left air intake pipe 21 and the right air intake pipe 22 are provided with a plurality of acoustic attenuation micro holes.
  • the noise of the smoke passes through the left intake pipe 21 or the right air intake pipe 22 after entering the left air intake portion 201 or the right air intake portion 202, the noise leaks out of the acoustic attenuation micro holes of the left air intake pipe 21 or the right air intake pipe 22 and is reflected in space between the left intake pipe 21 and the left air intake portion 201 or space between the right air intake pipe 22 and the right air intake portion 202 back and forth for a plurality of times, to achieve an effect of reducing the noise.
  • a lower housing 20 of a low-noise cooker hood 2 includes a left air intake portion 201, a right air intake portion 202 and an air exhaust portion 203.
  • the air exhaust portion 203 is mounted with a three-way air exhaust pipe 23, a first air intake port of the three-way air exhaust pipe 23 is connected to a left middle hole 21c between the left air intake portion 201 and the air exhaust portion 203, a second air intake port is connected to a right middle hole 22c between the right air intake portion 202 and the air exhaust portion 203, and an air exhaust port is connected to an air exhaust opening 203b of the air exhaust portion 203.
  • Smoke enters the three-way air exhaust pipe 23 from the left middle hole 21c or the right middle hole 22c, and flows to the upper housing 10 through the air exhaust opening 203b of the air exhaust portion 230.
  • the three-way air exhaust pipe 23 is further mounted with second thin plates 24, where the surface of each second thin plate 24 is provided with a plurality of acoustic attenuation micro holes.
  • the neighboring second thin plates 24 are parallel to each other, and the surface of the second thin plate 24 is a flat surface.
  • the second thin plates may not be parallel to each other, and the surface of the second thin plate may be a curved surface of which a cross-section is "S" shaped.
  • a connector is mounted between the air exhaust port of the three-way air exhaust pipe 23 and the air exhaust opening 203b, and the connector includes a second separator 32, an annular sealing plate 17 and a plurality of third thin plates 18.
  • the second separator 32 is mounted between the air exhaust port of the three-way air exhaust pipe 23 and the annular sealing plate 17.
  • the second separator 32 has an opening 32a that is made to be aligned with the air exhaust port of the three-way air exhaust pipe 23.
  • the annular sealing plate 17 has an upper opening 17b and a lower opening 17a, the lower opening 17a thereof is aligned with the opening 32a of the second separator 32, and the upper opening 17b thereof is aligned with an air inlet 10a of the upper housing 10.
  • the third thin plates 18 are mounted parallel to each other in the annular sealing plate 17. Peripheral walls of the annular sealing plate 17 and the surface of the third thin plate 18 are all provided with a plurality of acoustic attenuation micro holes.
  • the noise When passing through the annular sealing plate 17 and the third thin plate 18, the noise leaks out of the acoustic attenuation micro holes of the annular sealing plate 17 and the third thin plate 18 and is reflected in space of the annular sealing plate 17 back and forth for a plurality of times, thereby achieving an effect of reducing the noise.
  • a housing 30 of a low-noise cooker hood 3 is divided into two parts, and includes an upper housing 10 and a lower housing 20.
  • the lower housing 20 has an air intake surface 20a and an air exhaust surface 20b, and the air intake surface 20a is used for facing a cooktop that generates smoke, and the air exhaust surface 20b is used for connecting to the upper housing 10.
  • the air intake surface 20a has a left air intake opening 201a and a right air exhaust opening 202a
  • the air exhaust surface 20b has an air exhaust opening 203b
  • an air inlet 10a of the upper housing 10 is connected to the air exhaust opening 203b of the lower housing 20.
  • the air exhaust surface 20b of the lower housing 20 is parallel to the horizontal plane, and the air intake surface 20a is also parallel to the horizontal plane.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Duct Arrangements (AREA)
EP18176223.8A 2017-06-27 2018-06-06 Küchenhaube Active EP3421891B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710504580.1A CN109140547A (zh) 2017-06-27 2017-06-27 吸油烟机

Publications (2)

Publication Number Publication Date
EP3421891A1 true EP3421891A1 (de) 2019-01-02
EP3421891B1 EP3421891B1 (de) 2021-01-27

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ID=62597322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18176223.8A Active EP3421891B1 (de) 2017-06-27 2018-06-06 Küchenhaube

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EP (1) EP3421891B1 (de)
CN (1) CN109140547A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113108345A (zh) * 2021-04-21 2021-07-13 宁波方太厨具有限公司 一种吸油烟机、吸油烟机的工作方法及厨房电器
CN113729535A (zh) * 2020-05-27 2021-12-03 厦门优胜卫厨科技有限公司 一种电子便器的烘干装置
US11466866B2 (en) 2019-10-28 2022-10-11 Lg Electronics Inc. Kitchen hood with front facing vent

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111765123A (zh) * 2019-04-01 2020-10-13 博西华电器（江苏）有限公司 吸油烟机的风机及吸油烟机
CN113217966B (zh) * 2021-05-31 2022-10-21 宁波方太厨具有限公司 一种吸油烟机及其控制方法
CN113719872B (zh) * 2021-08-31 2023-05-26 宁波方太厨具有限公司 一种吸油烟机及其控制方法

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US3364664A (en) * 1964-07-20 1968-01-23 Cockle Ventilator Company Inc Grease extractor for ventilating systems
WO2008090080A1 (fr) * 2007-01-19 2008-07-31 Roblin Sas Hotte aspirante pour cuisine
CN201242205Y (zh) * 2008-07-04 2009-05-20 袁庆堂 低噪音排油烟机
CN101457946A (zh) * 2007-12-11 2009-06-17 宁波方太厨具有限公司 用于抽油烟系统的仿生微孔降噪结构
CN201925993U (zh) * 2011-01-10 2011-08-10 宁波方太厨具有限公司 具有稳流降噪结构的油烟机
WO2015029403A1 (ja) * 2013-09-02 2015-03-05 パナソニックＩｐマネジメント株式会社 レンジフード
US9121174B1 (en) * 2014-05-23 2015-09-01 Hwa-Yi Ventilation Co., Ltd. Foldable sound attenuator
WO2018069813A1 (en) * 2016-10-11 2018-04-19 Elica S.P.A. Hood for the suction of cooking fumes

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JPH06201172A (ja) * 1993-01-07 1994-07-19 Matsushita Seiko Co Ltd レンジフード用フィルター
CN2656683Y (zh) * 2003-11-06 2004-11-17 宁波方太厨具有限公司 一种用于吸油烟机的降噪蜗壳
CN102042628B (zh) * 2011-01-10 2012-08-22 宁波方太厨具有限公司 具有稳流降噪结构的油烟机
CN203628765U (zh) * 2013-11-30 2014-06-04 宁波方太厨具有限公司 一种静音式吸油烟机
CN106051872B (zh) * 2016-07-22 2018-07-17 宁波方太厨具有限公司 一种吸油烟机

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364664A (en) * 1964-07-20 1968-01-23 Cockle Ventilator Company Inc Grease extractor for ventilating systems
WO2008090080A1 (fr) * 2007-01-19 2008-07-31 Roblin Sas Hotte aspirante pour cuisine
CN101457946A (zh) * 2007-12-11 2009-06-17 宁波方太厨具有限公司 用于抽油烟系统的仿生微孔降噪结构
CN201242205Y (zh) * 2008-07-04 2009-05-20 袁庆堂 低噪音排油烟机
CN201925993U (zh) * 2011-01-10 2011-08-10 宁波方太厨具有限公司 具有稳流降噪结构的油烟机
WO2015029403A1 (ja) * 2013-09-02 2015-03-05 パナソニックＩｐマネジメント株式会社 レンジフード
US9121174B1 (en) * 2014-05-23 2015-09-01 Hwa-Yi Ventilation Co., Ltd. Foldable sound attenuator
WO2018069813A1 (en) * 2016-10-11 2018-04-19 Elica S.P.A. Hood for the suction of cooking fumes

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11466866B2 (en) 2019-10-28 2022-10-11 Lg Electronics Inc. Kitchen hood with front facing vent
US11473783B2 (en) * 2019-10-28 2022-10-18 Lg Electronics Inc. Kitchen hood with height adjustment
US11573010B2 (en) 2019-10-28 2023-02-07 Lg Electronics Inc. Self-cleaning kitchen hood
US11629861B2 (en) 2019-10-28 2023-04-18 Lg Electronics Inc. Kitchen hood with slim profile
CN113729535A (zh) * 2020-05-27 2021-12-03 厦门优胜卫厨科技有限公司 一种电子便器的烘干装置
CN113729535B (zh) * 2020-05-27 2023-09-08 厦门优胜卫厨科技有限公司 一种电子便器的烘干装置
CN113108345A (zh) * 2021-04-21 2021-07-13 宁波方太厨具有限公司 一种吸油烟机、吸油烟机的工作方法及厨房电器

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EP3421891B1 (de) 2021-01-27
CN109140547A (zh) 2019-01-04

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