EP1672285A1 - Hotte d'aspiration - Google Patents
Hotte d'aspiration Download PDFInfo
- Publication number
- EP1672285A1 EP1672285A1 EP05027747A EP05027747A EP1672285A1 EP 1672285 A1 EP1672285 A1 EP 1672285A1 EP 05027747 A EP05027747 A EP 05027747A EP 05027747 A EP05027747 A EP 05027747A EP 1672285 A1 EP1672285 A1 EP 1672285A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- walljet
- air
- guiding member
- main body
- guiding
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
-
- 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 a hood ventilation apparatus, and particularly, to a hood ventilation apparatus having a walljet device for efficiently guiding air containing cooking by-products which are exhausted to an outer circumferential surface of a hood toward a hood collecting region even using a small amount of discharged air.
- a hood ventilation apparatus is mounted above a cooking source such as gas-ranges or electrical microwave ovens (used as a heating source) so as to exhaust air containing pollutants which are generated while cooking food at home kitchens or restaurants to an external circumference.
- a cooking source such as gas-ranges or electrical microwave ovens (used as a heating source) so as to exhaust air containing pollutants which are generated while cooking food at home kitchens or restaurants to an external circumference.
- a conventional hood ventilation apparatus includes a hood 10 installed on a support 15 such as a mounting wall so as to be positioned above cooking source 40 (e.g., gas-ranges or cook-tops) with a constant interval from the cooking source 40, a grease filter 32 mounted in an intake opening 31 which is formed at an inlet side of the hood 10 facing an upper surface of the cooking source 40, for filtering grease particles generated during cooking and particles in an aerosol state, a blowing unit 22 mounted in an upper side of the hood 10, for generating intake airstreams and an exhaust duct 21 connected to an upper portion of the hood 10, for exhausting air having passed through the hood 10 to the exterior.
- cooking source 40 e.g., gas-ranges or cook-tops
- a grease filter 32 mounted in an intake opening 31 which is formed at an inlet side of the hood 10 facing an upper surface of the cooking source 40, for filtering grease particles generated during cooking and particles in an aerosol state
- a blowing unit 22 mounted in an upper side of the hood
- the hood 10 includes an air collecting chamber 30 of a canopy shape which has large lower area and small upper area and of which inside is penetrated to thusly collect air therein and a machinery chamber 20 extending upwardly to an upper portion of the air collecting chamber 30 so as to be communicated therewith, and in which the blowing unit 22 communicated with the exhaust duct 21 is mounted.
- the intake opening 31 is formed at a lower surface of the air collecting chamber 30 facing the cooking source, and the grease filter 32 is mounted to block the whole intake opening 31.
- the grease filter 32 is constructed such that air is ventilated. Accordingly, the air generated from the cooking source which is a heating source is sucked into the air collecting chamber 30 of the hood 10 via the grease filter 32. Grease which is contained in the air and cooking by-products in the aerosol state are filtered by the grease filter 32.
- the blowing unit 22 includes a fan 23 connected to a motor (not shown) and a rotary shaft of the motor, for generating a flow by being rotated by a rotation force of the motor.
- a centrifugal fan is used as the fan 23.
- the hood ventilation apparatus is operated at the same time when food is cooked using the cooking source 40.
- the motor When power is supplied to the motor constructing the blowing unit 22, the motor is operated.
- the fan 23 is rotated by the operation of the motor and thus airstream is generated by a suction force.
- the suction force of the fan 23 is lowered in inverse proportion to square of a distance on the basis of the suction surface of the air collecting chamber 30 of the hood 10, even though the suction force greatly acts on the suction surface, if the suction surface is distant from the heating source (cooking source), the air generated from the heating source may not effectively be collected into the hood.
- an object of the present invention is to provide a hood ventilation apparatus capable of improving collecting efficiency and cooking pleasantness by efficiently guiding pollutants exhausted to an outer circumferential surface of a hood into a hood collecting region even using a small amount of discharged air.
- a hood ventilation apparatus comprising: a hood including a main body installed above a cooking source and having a suction opening at a lower surface thereof into which air containing cooking by-products is sucked, and an exhaust duct extending to an upper side of the main body and exhausting the sucked air; a first blower mounted in the exhaust duct, for generating a suction force to suck air into the hood; a walljet guiding member installed at an outer circumference of the main body, for allowing air from the inside of the hood to flow along a surface thereof (the walljet guiding member); and a second blower provided in the main body, for supplying air into the walljet guiding member.
- Figs. 2 to 5 show a hood ventilation apparatus according to a first embodiment of the present invention.
- a hood ventilation apparatus includes a hood 350 including a main body 200 installed above a cooking source such as cook-tops or gas-ranges (refer to Fig. 1) and having a suction opening 230 at a lower portion thereof, into which air containing cooking by-products is sucked, and an exhaust duct 300 extending to an upper side of the main body 200 and through which the sucked air is exhausted; a first blower 310 mounted in the exhaust duct 300, for generating a suction force so as to suck the air into the hood 350, a walljet guiding member 430 installed at an outer circumference of the main body 200, for allowing air from the inside of the hood 350 to flow along the surface of the walljet guiding member and a second blower 500 provided in the main body 200, for supplying air into the walljet guiding member 430.
- a cooking source such as cook-tops or gas-ranges (refer to Fig. 1)
- an exhaust duct 300 extending to an upper side of the main body
- the suction opening 230 is provided with a grease filter 250 for filtering grease particles and particles in an aerosol state generated during cooking.
- the walljet guiding member 430 may be installed at an entire region of the outer circumference of the main body 200, namely, over front portion, both lateral portions and rear portion of the outer circumference, or installed at the front portion and the both lateral portions or only at the front portion thereof.
- the walljet guiding member 430 is installed at the front portion of the outer circumference of the main body 200.
- One side of the main body 200 is opened.
- One end of an upper casing 210 of the main body 200 which is visible through the opened one side is connected with an air guiding plate 411.
- the walljet guiding member 430 is fixedly installed between the air guiding plate 401 and one end of a lower casing 220 of the main body 200 so as to form a walljet passage 401 between the air guiding plate 411 and a surface of the walljet guiding member 430.
- a through hole 211 is formed in the upper casing 210 of the main body 200 so as to allow the second blower 500 to suck air from the exterior into the interior of the main body 200.
- a centrifugal fan is preferably used as the second blower 500.
- a walljet guiding frame 440 is installed in the main body 200.
- the walljet guiding frame 440 thus covers the second blower 500 except for the opened one side of the main body 200 at which the walljet guiding member 430 is installed.
- a mounting hole 442 for mounting the second blower 500 is formed in one surface of the walljet guiding frame 440.
- a mounting portion 460 which covers the mounting hole 442 and in which the second blower 500 is mounted, is integrally attached to the walljet guiding frame 440.
- a first extension plate 410 having a particular length is interposed between the air guiding plate 411 and one end of the upper casing 210 of the main body 200 and a second extension plate 420 extends from one end of the lower casing 220 of the main body 200, so that the air discharged through the walljet passage 401 by the second blower 500 flows more smoothly and the walljet guiding member 430 is fixedly installed more easily.
- a length L from one end of the first extension plate 410 fixedly installed at one end of the upper casing 210 of the main body 200 to the end of the air guiding plate 411 is designed by considering an overall size of the hood ventilation apparatus 350.
- Hood ventilation apparatuses with typical sizes which are currently being used preferably have the length L shorter than 70mm.
- first extension plate 410 and the air guiding plate 411 are formed in a shape integrally extending from the upper casing 210 of the main body 200, and the second extension plate 420 can be constructed in a shape integrally extending from the lower casing 220 of the main body 200.
- the walljet guiding member 430 is formed in an annular pipe or an annular bar.
- the air guiding plate 411 is formed so as to have a constant curvature along the surface of the walljet guiding member 430.
- a ratio of a height h from the lower casing 220 of the main body 200 to the center of the walljet guiding member 430 with respect to a diameter D of the walljet guiding member 430 is preferably formed to be 0 to 0.25.
- a gap d between the walljet guiding member 430 and the end of the air guiding plate 411, which is a gap d of the walljet passage 401, is formed to be between 1.5mm and 4mm, by which an optimal walljet flow can preferably be formed.
- an initial angle ⁇ of the walljet discharged through the walljet passage 401 must be between 30° and 60° in a direction that the walljet is discharged on the basis of a virtual vertical line 473 passing the center of the walljet guiding member 430.
- a speed of the walljet is preferably maintained by 3 ⁇ 5m/s. For this, it is important to appropriately adjust the radius of curvature and the length of the air guiding plate 411 according to an optimal design.
- a part of lower portion of the walljet guiding member 430 is preferably protruded downwardly lower than the lower casing 220 of the main body 20 and installed at an outer circumferential surface of the main body 200.
- Fig. 6 shows main parts of a hood ventilation apparatus according to the second embodiment of the present invention. That is, in a hood ventilation apparatus according to the second embodiment of the present invention, as shown in Fig. 6, a through hole 462, into which the air discharged to the exterior through first blower 310 is partially sucked by a suction force of the second blower 500, is formed at a lower surface of the mounting portion 460 in which the second blower 500 is mounted.
- Fig. 7 shows a hood ventilation apparatus according to the third embodiment of the present invention. That is, the walljet guiding member 430 forms a constant interval b with one end of the lower casing 220 of the main body 200, more preferably, with the second extension plate 420, and accordingly a separation condition of the walljet using a boundary layer suction effect can be prevented by the interval b. At this time, air sucked into the first blower 310 can be sucked through the through hole 211 formed in the upper casing 210 of the main body 200, as shown in the first embodiment, and also can be sucked through the through hole 462 formed in the mounting portion 462, as shown in the second embodiment.
- Fig. 8 on the other side, is a plane view of a hood ventilation apparatus according to the fourth embodiment of the present invention.
- the walljet guiding member 430 is constructed to be installed at the front portion and the both lateral portions of the outer circumference of the main body 200.
- a lighting lamp 450 such as a halogen lamp is installed in the walljet guiding member 430.
- the walljet guiding member 430 is formed of a material having a transparent or translucent property which can transmit light, so as to obtain a beautiful appearance thereof when the lighting lamp 450 is operated.
- a walljet guiding frame 570 is installed in the main body 200 so as to divide the airstream from the second blower 500 into three portions, namely, into the front portion and the both lateral portions. As a result, the air passing the second blower 500 can be easily guided toward the guiding member 430 installed at the front and the both lateral portions.
- Figs. 9 to 11 show various modification examples of the walljet guiding member according to the present invention.
- Fig. 9 shows a construction in which a curved guiding plate 412 is installed between the walljet guiding member 430 and the air guiding plate 411.
- Fig. 10 shows a structure in which the walljet guiding member 431 is not formed in an annular shape but formed in a curved plate shape. Also, Fig. 10 shows a construction in which a middle guiding plate 413 having a curved shape is installed between the walljet guiding member 430 having the curved plate shape and the air guiding plate 411.
- Fig. 11 shows a structure in which the walljet guiding member 432 is not formed in the annular shape but formed in the curved plate shape similar to Fig. 10, and also shows a construction in which a vertical portion 411 a extends from the air guiding plate 411.
- a middle guiding member 414 which includes a curved inner lateral surface 414a, an outer lateral surface 414b having a curved upper side and a perpendicular lower side, and a horizontal lower lateral surface 414c, is installed between the air guiding plate 411 and the walljet guiding member 432.
- Air containing cooking by-products generated from the cooking source 40 is discharged to the exterior through the exhaust duct 300 via the suction opening 230 by a suction force of the first blower 310 installed in the exhaust duct 300 of the hood ventilation apparatus.
- a walljet spread through the walljet passage 401 by an operation of the second blower 500 flows fast along the surface of the walljet guiding member 430, 431, or 432 by a coanda effect (a characteristic in which a fluid flows along a peripheral solid surface)
- a negative pressure region is artificially formed at a peripheral portion of the walljet guiding member 430.
- the walljet flows peripheral air having weak momentum into the negative pressure region.
- Figs. 12 to 17 show results from comparing performances of the hood ventilation apparatus according to the present invention with those of the conventional hood ventilation apparatus.
- Fig. 12 is a photo showing a result of an airstream visualization test (discharged air volume: 300CMH) when a walljet airstream is not generated in the hood ventilation apparatus according to the present invention
- Fig. 13 is a photo showing a result of the airstream visualization test (discharged air volume: 300CMH, walljet speed: 4m/s, passage interval d: 3.0mm) when the walljet airstream is generated in the hood ventilation apparatus according to the present invention.
- Figs. 14 and 15 show results of a CFD calculation (discharged air volume: 300CMH, walljet speed: 4m/s, passage interval d: 2.5mm) of the hood ventilation apparatus according to the present invention
- Figs. 16 and 17 show results of the CFD calculation (discharged air volume: 300CMH, walljet speed: 4m/s, passage interval d: 2.5mm) of the conventional hood ventilation apparatus.
- the airstream at the front side of the hood which are not collected can effectively be collected.
- the hood ventilation apparatus by installing the walljet guiding member at the outer circumferential surface of the suction opening into which the pollutants generated from the cooking source such as cook-tops or gas-ranges are sucked, a negative pressure is formed at a peripheral portion of the walljet guiding member by the walljet flow flowing along the surface of the walljet guiding member. As a result, it is possible to collect into the suction opening the air which is spread from the cooking source, deviated from the collecting chamber, and then discharged to the outer circumference of the hood ventilation apparatus.
- the pollutants can be prevented from being spread by collecting the pollutants into the collecting chamber of the hood ventilation apparatus even in the state that the discharged air volume is weak. Also, cooking pleasantness can be improved by restricting hot pollutants from being spread toward a face of user who is cooking.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040108799A KR100608704B1 (ko) | 2004-12-20 | 2004-12-20 | 주방용 후드의 월제트 배기장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1672285A1 true EP1672285A1 (fr) | 2006-06-21 |
EP1672285B1 EP1672285B1 (fr) | 2017-03-22 |
Family
ID=35781382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05027747.4A Not-in-force EP1672285B1 (fr) | 2004-12-20 | 2005-12-19 | Hotte aspirante |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1672285B1 (fr) |
KR (1) | KR100608704B1 (fr) |
CN (1) | CN100432545C (fr) |
AU (1) | AU2005244606B2 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1757865A2 (fr) * | 2005-08-23 | 2007-02-28 | LG Electronics Inc. | Hotte d'aspiration |
DE102007039635A1 (de) * | 2007-03-20 | 2008-09-25 | BSH Bosch und Siemens Hausgeräte GmbH | Dunstabzugshaube |
WO2009024513A1 (fr) * | 2007-08-22 | 2009-02-26 | BSH Bosch und Siemens Hausgeräte GmbH | Boîtier d'une hotte aspirante avec une fente de sortie d'air |
DE102007039634A1 (de) * | 2007-08-22 | 2009-02-26 | BSH Bosch und Siemens Hausgeräte GmbH | Gehäuse einer Dunstabzugshaube |
CN114763918A (zh) * | 2021-01-11 | 2022-07-19 | 宁波方太厨具有限公司 | 一种吸油烟机及其控制方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101486268B1 (ko) * | 2013-01-01 | 2015-01-28 | 진남기 | 각종 국소배기 후드 흡인장치 |
CN106594831B (zh) * | 2016-12-16 | 2019-04-30 | 美的集团股份有限公司 | 射流拢烟装置及排烟装置 |
CN106765389B (zh) * | 2016-12-20 | 2019-07-02 | 美的集团股份有限公司 | 排烟装置 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2531862A1 (de) * | 1975-07-17 | 1977-02-10 | Karl Dipl Ing Schmitt | Umluft-dunstabzugshaube |
EP0294006A1 (fr) * | 1987-06-04 | 1988-12-07 | Philips Patentverwaltung GmbH | Hotte d'évacuation de fumées, en particulier pour la cuisine |
US5050581A (en) * | 1989-06-09 | 1991-09-24 | Roehl Hager Hannelore | Process and device for drawing off vapors and fumes |
DE4114329A1 (de) * | 1991-05-02 | 1992-11-05 | Standard Elektrik Lorenz Ag | Dunstabzugshaube mit luftschleier |
EP0555676A1 (fr) * | 1992-02-11 | 1993-08-18 | Hannelore Röhl-Hager | Hotte d'aspiration et procédé pour aspirer de la poussière ou de la vapeur |
EP0609740A1 (fr) * | 1993-02-03 | 1994-08-10 | VALCUCINE S.p.A. | Hotte d'évacuation de fumée pour cuisine |
US6336451B1 (en) * | 1996-04-04 | 2002-01-08 | Roehl-Hager Hannelore | Process and device for confining, retaining and sucking off fumes, dust or the like |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4043319A (en) * | 1975-09-18 | 1977-08-23 | Jensen Donald D | Exhaust hood |
US4153044A (en) * | 1978-01-23 | 1979-05-08 | Nett Louis A | Backshelf ventilating hood |
JPS60175934A (ja) | 1984-02-21 | 1985-09-10 | Matsushita Electric Ind Co Ltd | 空気調和機の風向制御装置 |
KR100384700B1 (ko) | 2001-06-04 | 2003-05-23 | 주식회사 엑타 | 주방용 배기 후드 |
JP2004077073A (ja) | 2002-08-21 | 2004-03-11 | Fuji Industrial Co Ltd | レンジフードファン |
-
2004
- 2004-12-20 KR KR1020040108799A patent/KR100608704B1/ko not_active IP Right Cessation
-
2005
- 2005-12-19 EP EP05027747.4A patent/EP1672285B1/fr not_active Not-in-force
- 2005-12-19 AU AU2005244606A patent/AU2005244606B2/en not_active Ceased
- 2005-12-20 CN CNB2005101369211A patent/CN100432545C/zh not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2531862A1 (de) * | 1975-07-17 | 1977-02-10 | Karl Dipl Ing Schmitt | Umluft-dunstabzugshaube |
EP0294006A1 (fr) * | 1987-06-04 | 1988-12-07 | Philips Patentverwaltung GmbH | Hotte d'évacuation de fumées, en particulier pour la cuisine |
US5050581A (en) * | 1989-06-09 | 1991-09-24 | Roehl Hager Hannelore | Process and device for drawing off vapors and fumes |
DE4114329A1 (de) * | 1991-05-02 | 1992-11-05 | Standard Elektrik Lorenz Ag | Dunstabzugshaube mit luftschleier |
EP0555676A1 (fr) * | 1992-02-11 | 1993-08-18 | Hannelore Röhl-Hager | Hotte d'aspiration et procédé pour aspirer de la poussière ou de la vapeur |
EP0609740A1 (fr) * | 1993-02-03 | 1994-08-10 | VALCUCINE S.p.A. | Hotte d'évacuation de fumée pour cuisine |
US6336451B1 (en) * | 1996-04-04 | 2002-01-08 | Roehl-Hager Hannelore | Process and device for confining, retaining and sucking off fumes, dust or the like |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1757865A2 (fr) * | 2005-08-23 | 2007-02-28 | LG Electronics Inc. | Hotte d'aspiration |
EP1757865A3 (fr) * | 2005-08-23 | 2013-07-03 | LG Electronics Inc. | Hotte d'aspiration |
DE102007039635A1 (de) * | 2007-03-20 | 2008-09-25 | BSH Bosch und Siemens Hausgeräte GmbH | Dunstabzugshaube |
WO2008113664A3 (fr) * | 2007-03-20 | 2009-08-20 | Bsh Bosch Siemens Hausgeraete | Hotte aspirante |
WO2009024513A1 (fr) * | 2007-08-22 | 2009-02-26 | BSH Bosch und Siemens Hausgeräte GmbH | Boîtier d'une hotte aspirante avec une fente de sortie d'air |
DE102007039634A1 (de) * | 2007-08-22 | 2009-02-26 | BSH Bosch und Siemens Hausgeräte GmbH | Gehäuse einer Dunstabzugshaube |
DE102007039633A1 (de) * | 2007-08-22 | 2009-02-26 | BSH Bosch und Siemens Hausgeräte GmbH | Gehäuse einer Dunstabzugshaube mit einem Luftaustrittsspalt |
CN114763918A (zh) * | 2021-01-11 | 2022-07-19 | 宁波方太厨具有限公司 | 一种吸油烟机及其控制方法 |
CN114763918B (zh) * | 2021-01-11 | 2023-07-25 | 宁波方太厨具有限公司 | 一种吸油烟机及其控制方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1672285B1 (fr) | 2017-03-22 |
CN100432545C (zh) | 2008-11-12 |
CN1811279A (zh) | 2006-08-02 |
AU2005244606A1 (en) | 2006-07-06 |
AU2005244606B2 (en) | 2007-07-12 |
KR20060070152A (ko) | 2006-06-23 |
KR100608704B1 (ko) | 2006-08-08 |
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