US3583306A - Evacuating means - Google Patents

Evacuating means Download PDF

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Publication number
US3583306A
US3583306A US822145A US3583306DA US3583306A US 3583306 A US3583306 A US 3583306A US 822145 A US822145 A US 822145A US 3583306D A US3583306D A US 3583306DA US 3583306 A US3583306 A US 3583306A
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US
United States
Prior art keywords
air
casing
working surface
air inlet
kitchen range
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.)
Expired - Lifetime
Application number
US822145A
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English (en)
Inventor
Manfred Otto Hagdorn
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.)
Electrolux AB
Original Assignee
Electrolux AB
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 Electrolux AB filed Critical Electrolux AB
Application granted granted Critical
Publication of US3583306A publication Critical patent/US3583306A/en
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    • 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
    • F24C15/2078—Removing cooking fumes movable
    • F24C15/2092—Removing cooking fumes movable extendable or pivotable
    • 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
    • F24C15/2028—Removing cooking fumes using an air curtain
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F9/00—Use of air currents for screening, e.g. air curtains

Definitions

  • a small quantity of air flowing through the exhaust hood is diverted therefrom and conducted to the hollow part which is provided with a discharge opening for discharging air toward the working surface of the kitchen range.
  • the air discharged from the discharge opening provides an air curtain which is at an acute angle to the vertical and has a major component directed vertically downward in a direction from the air inlet of the exhaust hood and a minor component directed horizontally toward the rear of the kitchen range and functions to promote removal of objectionable fumes produced during cooking in a normal path of flow leading to the air inlet of the exhaust hood.
  • the curtain of air often is maintained only over a portion ofthe working surface, such as its middle portion, for example. This reduces the ability of the exhaust hood to remove objectionable fumes effectively from the working surface, especially fumes of this kind produced during cooking at surface heating units at the front of the kitchen range.
  • the part accomplish this by providing an elongated part which extends across the entire front of the working surface and in which a slot defines the air outlet from which air is discharged to form the air curtain.
  • a part for producing the air curtain which can be moved from a position at the vicinity of the exhaust hood to a position removed from the hood, the part can be positioned to direct an air curtain toward the front of the working surface when this is required, and, when it is necessary to inspect food being cooked on rear surface heating units, the part can be shifted to its position near the exhaust hood so that the likelihood of striking the part when leaning over the cooking surface will be avoided.
  • the air curtain is at an acute angle to the vertical with its major component directed vertically downward in a direction from the air inlet of the exhaust hood and a minor component directed horizontally toward the rear of the working surface.
  • FIG. I is a side elevational view of a kitchen range andan evacuating means, partly in vertical section, embodying the invention
  • FIG. 2 is an enlarged vertical sectional view of the evacuating means shown in FIG. I to illustrate details more clearly;
  • FIG. 3 is a vertical sectional view similar to FIG. 2 illustrating another embodiment of the invention.
  • FIG. 4 is a horizontal sectional view taken at line 4-4 of FIG. 2;
  • FIG. 5 is a fragmentary exploded perspective view of parts shown in FIGS], 2 and 3;
  • FIG. 6 is a fragmentary view taken at line 6-6 of FIG. 5;
  • FIG. 7 is a fragmentary view, partly broken away and in section, taken at line 7-7 of FIG. 5;
  • FIG. 8 is a front elevational view of the evacuating means shown in FIGS. 1 and 2;
  • FIG. 9 is a front elevational view of the evacuating means shown in FIG. 3.
  • evacuating means 10 embodying my invention mounted in any suitable manner against a wall 11 above a kitchen range 12 having from and rear surface heating units 14 and 15, respectively, positioned on a platform defining a stationary working surface 16 having a front edge 17.
  • the evacuating means 10 comprises a casing I8 which defines an exhaust hood adapted to be disposed above at least the rear portion of the working surface 16.
  • the casing 18 has a downward facing air inlet 19 and a motor-fan unit 20 therein for inducing upward flow of air through the air inlet 19.
  • the motor-fan unit 20 comprises a motor 22 having a downward depending shaft 23 to which is fixed a fan 24 having blades 24a.
  • the motor 22 is mounted within the casing 18 by an annular-shaped supporting member 25 in the form of a spider having radially extending vanes 26, as best shown in FIG. 4.
  • an annular-shaped diffuser plate 27 which is of conical form in section, as shown in FIG. 2.
  • the diffuser plate 27 extends upward and radially outward from the bottom edges of the blades 24a and at its outer periphery is fixed in any suitable manner to the sidewall of the casing 18.
  • the upper small end'of the casing 18 is connected to a conduit or vent pipe 29.
  • the objectionable fumes produced during cooking at the working surface 16 are drawn through the air inlet 19 of the evacuating means I0 to the'inlet of the fan 24 and discharged from the latter through the upper part of the casing 18 and the conduit or vent pipe 29.
  • a small housing 30 in which suitable controls are provided for controlling the surface heating units 14 and 15 and the motorfan unit 20.
  • the front wall of the control housing 30 functions as a control panel having suitable controls 31, 32 and 33 for controlling the motor-fan unit 20 and controls 34 for the surface heating units 14 and 15.
  • the evacuating means 10 in FIG. 3 is like the evacuating means 10 shown in FIGS. 1 and 2 and just described and differs therefrom in that the casing 18 is of rectangular form throughout its height and its upper open end is provided with angle members 35 for supporting in a horizontal position an odor absorbing filter 36, such as an activated charcoal filter, for example.
  • the upper open end of the casing 18 is provided with a removable louver 37.
  • each of the evacuating means 10 and 10' in addition to the exhaust hood defined by the casings 18 and 18, comprises structure including a part 43 which is mounted on the casings l8 and 18' for movement thereon toward and from a zone 44 above the front edge 17 of the working surface 16. Further, the part 43 and conduits 45 connected thereto define passage means 46 having a discharge opening 47 for discharging air downward therefrom, as indicated by the arrow A in each of FIGS. 1, 2 and 3.
  • the conduits 45 of the passage means 46 have air inlets, as will be described presently, adapted to receive air from a source of supply.
  • the exhaust hood part 43 comprises a plat horizontally disposed hollow shell 48 in which the forward portions of the top and bottom horizontal walls are curved toward one another and have a gap 47 therebetween defining the discharge opening for discharging air downward therefrom.
  • the air discharge opening 47 defines a slot which extends along the entire forward edge of the part 43.
  • the air discharged from discharge opening 47 forms an air curtain, indicated by the arrow A, which is directed toward the front of the working surface 16 when the part 43 is at the zone 44.
  • the air curtain functions to promote removal of objectionable fumes from the working surface 16 in a normal path of flow leading to the air inlet 19 of the evacuating means and In this way the fumes are less likely to be diverted from their normal path of flow and flow upward in front of the casings l8 and I8 and control housing 30.
  • the air curtain A is at an acute angle to the vertical, and, as schematicully illustrated in FIG. I, has a major component C directed vertically downward in a direction away from the air inlet 19 of the exhaust hood l8 and a minor component D directed horizontally toward the rear of the working surface 16.
  • the outer ends of the conduits 45 extend into the flat shell 48 at its ends.
  • the outer open ends of the conduits 45 are inclined to the longitudinal axes of the conduits, as indicated at 450 in FIG. 7, so that the open ends of the two conduits 45 face one another.
  • curved vanes 49 are provided at the inclined open ends 4511 of the conduits 45 to deflect toward the center of the shell 48 air discharged from the open ends 45a.
  • the rear lower portion of the flat shell 48 is provided with small openings 50 from which a small part of the air flowing to the shell 48 is discharged to form a second air curtain, indicated by the arrow B, which is essentially horizontal and prevents objectionable fumes produced during cooking from flowing upward in front of the casings l8 and I8 and control housing 30.
  • the depth or extent to which the evacuating means 10 projects forward from the wall II is comparatively small. For this reason the evacuating means 10 will not disturb the easy accessibility of the rear surface heating units 15, If the depth of the kitchen range 12 is about 620 mm., the depth of the evacuating means 10 can be as much as 370 mm., thus providing a free space at the front of the range 12 of about 250 mm.
  • I provide structure for diverting a portion of the air flowing through the air inlet 19 to the fan 24 and flowing such diverted air from the fan to the conduits 45.
  • I accomplish this by providing a narrow vertically extending chamber 51 at the rear wall of the chambers 18 and 18', such chamber having approximately the same length as the filter 38.
  • the chamber 51 extends upward from the air inlet 19 to a level midway between the top and bottom edges of the fan blades 24a of the fan 24.
  • a small quantity of air drawn through the air intake 19 by the fan 24 is diverted from the normal upward flow of air in the casings 18 and 18' and flows into the chamber 51 through an air inlet 52 at the top thereof, as shown in FIGS. 2, 3 and 5.
  • the chamber 51 is provided with openings 53 at its opposite ends, at regions near the bottom thereof, which are in alignment with the rear ends of hollow tubes 54 extending crosswise of the casings l8 and 18'. As seen in FIGS. 1, 2 and 3, the hollow tubes also are in alignment with the openings in the front wall of the casings l8 and 18'.
  • the energy of the air is converted from potential energy to kinetic energy, thereby increasing the velocity at which air is discharged downward from the discharge opening 47.
  • the conduits 45 telescopically fit within the hollow tubes 54 which function as guide tubes within which the conduits 45 are movable in the direction of their lengths to shift the part 43 from its solid line position in FIGS. 2 and 3 beneath the control housing 30 to its solid line position in FIG. I at the zone 44.
  • the air curtain produced by air discharged from the discharge opening 47 toward the front the working surface 16 effectively prevents objectionable fumes from How ing upward in front of the control housing 30 and functions to direct the fumes produced during cooking toward the air intake 19 of the evacuating means 10 and 10'.
  • the part 43 When it IS necessary to reach cooking vessels placed on the rear heating units 15, the part 43 can be readily moved from its dotted line position to its solid position in FIG. 2. Subsequently, the part 43 can be moved to its extended dotted line position in FIG. 2 at the vicinity of the zone 44.
  • a kitchen range comprising:
  • a. means providing a horizontal platform defining a stationary working surface having a front edge and at least one surface heating unit thereon,
  • evacuating means comprising structure including a casing defining an exhaust hood adapted to be disposed above at least the rear portion of said platform,
  • said casing having a horizontally disposed air inlet which faces downward and overlies said platform and is vertically spaced therefrom,
  • said structure including a hollow part
  • said hollow part having an elongated slot which is defined by a pair of spaced walls and extends across said working surface along a line extending substantially parallel to the front edge thereof,
  • said spaced walls forming means for discharging a curtain of air from said hollow part toward said working surface which is at an acute angle to the vertical and has a major component directed vertically downward in a direction from said air inlet and a minor component directed horizontally toward the rear of said working surface, and
  • said means for mounting said part on said casing including structure for moving said part horizontally from and toward said casing to shift said curtain of air backward and forward with respect to said stationary working surface and said surface heating unit thereon.
  • a kitchen range as set forth in claim 2 which includes vane means cooperating with the slantlike openings at the outer ends of said conduits for deflecting toward one another air discharged from the slantlike openings.
  • a kitchen range as set forth in claim 1 in which said part is apertured for discharging air therefrom to form a second curtain of air which is essentially horizontal and directed rearward from said part toward said exhaust hood and functions to deflect toward the air inlet fumes produced during cooking and tending to move upward in front of said exhaust hood.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
US822145A 1968-05-14 1969-05-06 Evacuating means Expired - Lifetime US3583306A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE06471/68A SE339300B (sv) 1968-05-14 1968-05-14

Publications (1)

Publication Number Publication Date
US3583306A true US3583306A (en) 1971-06-08

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Application Number Title Priority Date Filing Date
US822145A Expired - Lifetime US3583306A (en) 1968-05-14 1969-05-06 Evacuating means

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Country Link
US (1) US3583306A (sv)
DE (1) DE1924345B2 (sv)
FI (1) FI47812C (sv)
FR (1) FR2008451A1 (sv)
GB (1) GB1251741A (sv)
NO (1) NO123189B (sv)
SE (1) SE339300B (sv)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6173710B1 (en) * 1997-02-28 2001-01-16 Vent Master (Europe) Limited Ventilation systems
US20070193574A1 (en) * 2006-02-21 2007-08-23 Terry Kessler Grease filtration system and methods of making and using the same
US20130125764A1 (en) * 2011-11-17 2013-05-23 Sogang University Research And Business Foundation Ventilation apparatus and cooking system having the same
BE1021500B1 (nl) * 2012-12-07 2015-12-03 Renson Ventilation Nv Afzuigkap voor aansluiting op een centraal ventilatiesysteem en centraal ventilatiesysteem omvattende een dergelijke afzuigkap
US9574779B2 (en) 2008-04-18 2017-02-21 Oy Halton Group, Ltd. Exhaust apparatus, system, and method for enhanced capture and containment
DE102018122452A1 (de) * 2018-09-13 2020-03-19 Berling Aero IP UG (haftungsbeschränkt) Luftabsaugvorrichtung mit Deflektorvorrichtung, Verfahren zur Abscheidung von Kondensat in einer Luftabsaugvorrichtung und Verwendung einer Deflektorvorrichtung
US20200191409A1 (en) * 2018-12-12 2020-06-18 Bsh Home Appliances Corporation Cooktop ventilation system having a dual direction flow blower/fan
CN114046550A (zh) * 2021-11-16 2022-02-15 宁波丰向标集成厨房科技有限公司 一种集成灶自动集料回收装置
US20220136708A1 (en) * 2019-04-04 2022-05-05 Oy Halton Group Ltd. Slide-Type Range Hood

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2163927A5 (sv) * 1971-12-07 1973-07-27 Cometal
US3978777A (en) * 1975-02-24 1976-09-07 Nett Louis A Ventilating apparatus
SE385091B (sv) * 1975-11-05 1976-06-08 Futurumverken Ab Koksventilator med nedatriktad skermluftrida
GB2132335A (en) * 1982-12-21 1984-07-04 Chung Tsung Cheng Apparatus for exhausting gaseous emissions during cooking
DE3304262C2 (de) * 1983-02-08 1986-07-03 Hannelore 8400 Regensburg Röhl-Hager Umluft-Abzugshaube
JPS59172930U (ja) * 1983-05-04 1984-11-19 日本調理機株式会社 エアカ−テン装置を装備したベンチレ−タ
FR2671498B1 (fr) * 1991-01-11 1995-03-10 Dietrich Equip Menager Hotte d'aspiration pour un plan de travail.
DE4203916C1 (sv) * 1992-02-11 1993-04-29 Hannelore 8400 Regensburg De Roehl-Hager
FR2698022B1 (fr) * 1992-11-16 1995-06-02 Salvatore Montanaro Ecran de cuisson escamotable.
DE29513292U1 (de) * 1995-08-18 1996-12-19 Gutmann GmbH, 75417 Mühlacker Dunstabzugselement
DE19957962B4 (de) * 1999-05-19 2009-01-29 Röhl-Hager, Hannelore Verfahren und Einrichtung zum Eingrenzen, Erfassen und Absaugen von fluiden Medien
US6715484B2 (en) * 2002-06-06 2004-04-06 Maytag Corporation Vent hood for a kitchen stove
CA2828718C (en) 2004-07-23 2016-05-03 Oy Halton Group Ltd. Improvements for control of exhaust systems
US20080274683A1 (en) 2007-05-04 2008-11-06 Current Energy Controls, Lp Autonomous Ventilation System
US20090061752A1 (en) 2007-08-28 2009-03-05 Current Energy Controls, Lp Autonomous Ventilation System
CN105757747B (zh) 2008-12-03 2018-11-09 奥义霍尔顿集团有限公司 排气通风系统
CN105066201A (zh) * 2015-07-24 2015-11-18 唐国锐 油烟机气动束控导烟方法及气动束控导烟油烟机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3131687A (en) * 1962-03-12 1964-05-05 Gen Electric Ventilating system for cooking appliance
US3131688A (en) * 1962-10-08 1964-05-05 Gen Electric Air treatment means for domestic cooking appliances
US3411428A (en) * 1966-06-27 1968-11-19 Willard K. Ahlrich Ventilating hood for food cooking device
US3457850A (en) * 1967-12-11 1969-07-29 Elster S Air Conditioning Air curtain ventilator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3131687A (en) * 1962-03-12 1964-05-05 Gen Electric Ventilating system for cooking appliance
US3131688A (en) * 1962-10-08 1964-05-05 Gen Electric Air treatment means for domestic cooking appliances
US3411428A (en) * 1966-06-27 1968-11-19 Willard K. Ahlrich Ventilating hood for food cooking device
US3457850A (en) * 1967-12-11 1969-07-29 Elster S Air Conditioning Air curtain ventilator

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6173710B1 (en) * 1997-02-28 2001-01-16 Vent Master (Europe) Limited Ventilation systems
US20070193574A1 (en) * 2006-02-21 2007-08-23 Terry Kessler Grease filtration system and methods of making and using the same
US8695585B2 (en) * 2006-02-21 2014-04-15 Terry Kessler Grease filtration system and methods of making and using the same
US9574779B2 (en) 2008-04-18 2017-02-21 Oy Halton Group, Ltd. Exhaust apparatus, system, and method for enhanced capture and containment
US10471482B2 (en) 2008-04-18 2019-11-12 Oy Halton Group Ltd. Exhaust apparatus, system, and method for enhanced capture and containment
US20130125764A1 (en) * 2011-11-17 2013-05-23 Sogang University Research And Business Foundation Ventilation apparatus and cooking system having the same
US9874356B2 (en) * 2011-11-17 2018-01-23 Samsung Electronics Co., Ltd. Ventilation apparatus and cooking system having the same
BE1021500B1 (nl) * 2012-12-07 2015-12-03 Renson Ventilation Nv Afzuigkap voor aansluiting op een centraal ventilatiesysteem en centraal ventilatiesysteem omvattende een dergelijke afzuigkap
DE102018122452A1 (de) * 2018-09-13 2020-03-19 Berling Aero IP UG (haftungsbeschränkt) Luftabsaugvorrichtung mit Deflektorvorrichtung, Verfahren zur Abscheidung von Kondensat in einer Luftabsaugvorrichtung und Verwendung einer Deflektorvorrichtung
DE102018122452B4 (de) * 2018-09-13 2021-02-11 Berling Aero IP UG (haftungsbeschränkt) Luftabsaugvorrichtung mit Deflektorvorrichtung, Verfahren zur Abscheidung von Kondensat in einer Luftabsaugvorrichtung und Verwendung einer Deflektorvorrichtung
US20200191409A1 (en) * 2018-12-12 2020-06-18 Bsh Home Appliances Corporation Cooktop ventilation system having a dual direction flow blower/fan
US10948199B2 (en) * 2018-12-12 2021-03-16 Bsh Home Appliances Corporation Cooktop ventilation system having a dual direction flow blower/fan
US20220136708A1 (en) * 2019-04-04 2022-05-05 Oy Halton Group Ltd. Slide-Type Range Hood
US12098850B2 (en) * 2019-04-04 2024-09-24 Oy Halton Group Ltd. Slide-type range hood
CN114046550A (zh) * 2021-11-16 2022-02-15 宁波丰向标集成厨房科技有限公司 一种集成灶自动集料回收装置
CN114046550B (zh) * 2021-11-16 2024-04-12 宁波丰向标集成厨房科技有限公司 一种集成灶自动集料回收装置

Also Published As

Publication number Publication date
SE339300B (sv) 1971-10-04
NO123189B (sv) 1971-10-11
FI47812C (sv) 1974-03-11
FR2008451A1 (sv) 1970-01-23
DE1924345A1 (de) 1970-12-10
GB1251741A (sv) 1971-10-27
FI47812B (sv) 1973-11-30
DE1924345B2 (de) 1971-05-27

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