EP0045289A1 - Verfahren und Einrichtung zum Abfangen von Kochgerüchen - Google Patents

Verfahren und Einrichtung zum Abfangen von Kochgerüchen Download PDF

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Publication number
EP0045289A1
EP0045289A1 EP81850122A EP81850122A EP0045289A1 EP 0045289 A1 EP0045289 A1 EP 0045289A1 EP 81850122 A EP81850122 A EP 81850122A EP 81850122 A EP81850122 A EP 81850122A EP 0045289 A1 EP0045289 A1 EP 0045289A1
Authority
EP
European Patent Office
Prior art keywords
fan
grill
recess
range
cabinets
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Withdrawn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
EP81850122A
Other languages
English (en)
French (fr)
Inventor
Nils Randolf Bergmark
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.)
Futurum Utvecklings AB
Original Assignee
Futurum Utvecklings 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
Priority claimed from SE8005393A external-priority patent/SE8005393L/xx
Priority claimed from SE8100962A external-priority patent/SE8100962L/xx
Application filed by Futurum Utvecklings AB filed Critical Futurum Utvecklings AB
Publication of EP0045289A1 publication Critical patent/EP0045289A1/de
Withdrawn legal-status Critical Current

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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
    • F24C15/2064—Removing cooking fumes illumination for cooking hood
    • 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

  • a range fan When a range fan is mounted above a kitchen range for capturing cooking odours coming from cooking vessels on the range, it is usual that the fan be mounted beneath the kitchen cabinet situated directly above the range. In the nordic countries it is usual that the underside of this cabinet lie in the same plane as the underside of the cabinets on either side thereof, In certain cases a portion of the fan, e.g.,the fan housing, can extend from below up into the cabinet. Alternatively, the cabinet can be specially made as a spice cabinet.
  • the cabinet above the range has its underside situated at a higher level than the undersides of the cabinets on either side thereof. This forms a recess or niche open at the front and bottom.
  • the fan is mounted in the recess fixed to the underside of the cabinet.
  • the present invention relates to this recess arrangement of a range fan, the air-intake opening of which is at least partially downwardly directed.
  • One purpose of the invention is to improve the capturing of the cooking odours coming from the range. According to the invention this is achieved with a method and a device according to the accompanying claims 1 and 2, respectively.
  • the odour collection has proved, surprisingly, to increase quite markedly. In one example an improvement of 4-5% was achieved, from about 86% without baffling to slightly more than 90% with.
  • the reason for this improved odour collection appears to be that the baffle produces an essentially horizontal flow component in the air flowing to the air-intake opening of the fan.
  • the baffle leaves a forwardly open air-inflow opening into the recess free for the air.
  • the baffle reduces the area through which the air can flow into the recess, thereby increasing the airflow speed into the recesso
  • the increased flow speed in combination with the substantially horizontal flow direction, creates a screening air curtain which prevents odours from the stove from flowing out into the room past the range fan.
  • Another purpose of the invention is to make the odour collection sufficiently effective to permit indoor grilling, which produces a great amount of food odour.
  • indoor grilling is permitted with an odour collecting device combined with a grill, having the characteristics disclosed in claim 3.
  • a baffle combined with a grill presupposes a certain minimum vertical spacing between the grill and the underside of the fan, on the one hand to make the working surface of the grill easily accessible, and on the other hand to prevent the fan from being damaged by radiated heat from the grill.
  • the fan Since the vertical dimension of the recess is given, it is desirable that the fan have a small vertical dimension, as for example the range fan according to U.S. Patent Specification 4 089 328.
  • Fig. 1 shows from the side, and with the range fan represented in section, an odour collecting device according to the invention.
  • Fig. 2 shows the device of Fig. 1 as seen from the fronto
  • Fig. 3 shows in perspective and partially cut-away an air baffle made as a grill.
  • Fig. 4 shows in perspective corresponding to Fig. 3 another embodiment of an electric grill, which is built together with a range fan.
  • Fig. 5 shows the grill according to Fig. 4 as seen in vertical cross section.
  • Fig. 6 shows a frontal view of the combined range fan - grill unite
  • Fig. 7 is a simplified coupling diagram.
  • Figs. 1 and 2 show a kitchen range 2, e.g. an electric range, placed against a kitchen wall 1. Above the range 2, a kitchen cabinet 3 is fixed to the wall 1. The cabinet 3 has essentially the same width as the range 2. On either side of the cabinet 3, additional overhead cabinets 4 are fixed to the wall 1. The undersides of the cabinets 4 lie in the same plane, usually about 50 cm above the top side of the range 2. The cabinet 3 mounted above the range 2, however, has its underside raised to a higher level than the undersides of the cabinets 4, thus building a recess 5, the height of which is equal to the distance between the bottom planes of the cabinets 3 and 4, which is usually about 30 + 2 cm. The depth of the recess is equal to the depth of the cabinets, which is usually also 30 + 2 cm.
  • a range fan 6 is fixed to the underside of the cabinet 3.
  • the underside of the fan has a downwardly directed air-intake opening 7.
  • the major portion of the air-intake opening 7 is located within the recess 5, i.e. inside the plane of the front sides of the cabinets 3,4.
  • the fan is also designed to be flat and only extends 8 cm down beneath the underside of the cabinet 3.
  • an electric grill 8 is arranged which at the same time forms the air baffle by completely sealing the bottom of the recess.
  • the essentially flat top side 9 of the grill 8 is located at or near the plane of the undersides of the cabinets 4.
  • the grill is made as a parallelepipedic box. Its width is equal to the width of the cabinet 3 and its depth is essentially equal to the depth of the cabinet 3. Depending on the design, the width of the grill 8 can be greater than, equal to or somewhat less than the depth of the cabinet 3.
  • the depth of the grill should be so selected in relation to the mounting heights of the grill 8 and the fan 6, and the position of the downwardly shining lamp 10 in the range fan 6, that the grill 8 lies entirely between the wall-1 and a straight line (labelled 11 in Fig. 1) between the lamp 10 and the edge of the hot plates 12 closest to the wall 1, or a corresponding burner on a gas stove. If the grill depth is selected in this manner, the grill will not screen off the light falling on the range from the lamp 10 on the fan. The lamp 10 will also illuminate the top side of the grill 8.
  • the short sides of the grill 8 are provided with horizontal laterally extending strips 13 designed to be screwed fast to the underside of the cabinet 4.
  • the top side 9 of the grill- is formed of a plat plate, which has a central rectangular depression 14.
  • An electric heating coil 15 is arranged therein.
  • a grill plate 16 which is fluted on its top side and which is somewhat larger than the depression 14 can rest on the plate edge around the depression 14 with its underside somewhat above the heating coil 15.
  • the grill plate 16 On both its short sides, the grill plate 16 has upright handles 17 for lifting the grill plate off the grill.
  • the grill plate has a deeper grease gutter 18.
  • the supply of current to the heat coil 15 is controlled with a dial 19 in a combined switch and thermostat 20.
  • the dial 19 is mounted in the front wall 21 of the grill 8 next to a control light 22 which lights when the grill is on.
  • the thermostat 20 is controlled by a spring temperature sensor element 23, which is arranged in the depression 14 extending between the portions of the heating coil 15 so that the element abuts against the underside of the grill plate 16. At a suitable place in the depression 14 (for example as shown on one short side) there extends inwardly the actuating arm 24 of a switch 25.
  • an overheating protector can also be arranged, for example in the form of a melting fuse (not shown ⁇ at a suitable location, e.g. next to or built into the thermostat 20.
  • the device functions in the following manner.
  • the impeller 26 (shown in section) of the fan 6 sucks air through the downwardly directed intake opening 7, with a grease filter 27 mounted therein, and blows air out upwards through a pipe stub 28, to which there is connected an air evacuating duct (not shown) in the interior of the cabinet 3. Since the air intake opening 7 is located primarily within the recess 5, the fan 6 sucks in air from the recess 5. Because of the grill 8 functioning as a baffle, the recess 5 is closed downwards, and therefore the airflow from the surrounding space to the recess goes through the open front side of the recess.
  • Fig. 1 indicates with arrows 29 the flow path for food odours coming from cooking vessels on the range 2.
  • cooking odours coming from pots on the rear hot plates 12 flow upwards and forwards, around the front edge of the grill and then upwards and backwards to the fan 6. From cooking vessels on the forward plates, odours flow upwards or in an arc first forwards and then again backwards to the fan. This flow path for cooking odours is achieved because surrounding room air flows into the recess and to the fan through the open front side of the recess with an essentially horizontal component of movement. This airflow from the surrounding space is indicated with arrows 30 and forms an air curtain which hinders food odours from the range from penetrating out into the surrounding space.
  • the improved odour collection was measured in the following manner by comparative trials.
  • a standard device for creating odours and heat was placed on one of the front plates on the range 2.
  • the recess 5 was open downwards, i.e. was without baffle or grill.
  • the fan 6 was turned on to the highest speed.
  • the odour collection was measured according to prescribed norms and was measured to be 86%.
  • a grill 8 was then mounted according to the drawing. With an odour generator in the same position and the fan at the same speed, the odour collection was now measured to be slightly more than 90%, i.e. an improvement of slightly more than 4%.
  • Figs. 4, 5 and 6 show an alternative embodiment of a baffle means made as an electric grill.
  • the actual baffle means - the grill is made as a rectangular box.
  • its side walls 41,42 and rear wall 43 extend up above the top side 9 so that they bridge the distance between the top side 9 and the bottom side of the fan housing 6.
  • the upper edges of the walls 41, 42 and 43 are either securely joined to the fan or are made so that when the fan and grill are mounted in the recess 5, a predetermined spacing will be maintained between the underside of the fan 6 and the top side 9 of the grill 8. The purpose of this is to prevent the grill plate 16 from coming too close to the fan so that it is overheated.
  • the walls 41, 42 and 43 form at the same time a splash guard.
  • the grill, splash guard/spacer and fan can suitably be delivered as a completely assembled unit, which is mounted in the recess 5 with the aid of anchoring screws (not shown) for the fan and possibly screws in holes 44 in the side walls 41,42 o To function as a spacer, wall 43 or walls 41+42 are sufficient.
  • the grill shown in Figs. 4, 5 and 6 lacks its own operating means.
  • the required wires to the heating coil 15 and the thermostat 23 are taken from the fan 6 through a cable groove 45 in the corner between the rear wall 43 and the side wall 42.
  • the front side 46 of the fan also has a switch 48 and an indicator lamp 49 for the grill.
  • the fan 6 and the grill 8 have a single common current connection and according to a preferred embodiment, steps are taken to prevent the grill element 15 from being supplied with current without the fan being turned on.
  • Fig. 7 shows schematically how this safety measure can be realized.
  • the fan lamp the several speeds for the fan motor or the thermostat for the grill.
  • a wire 51 leads to the switch 47 of the fan motor 52.
  • a wire 53 leads to the fan motor 52 and the switch 48 which is in turn connected to the heating element 15 of the grill.
  • Said element and the fan motor 52 are connected via a second wire 54 to the other contact point of the current connection 50.
  • the switch 48 is without current when the fan motor:52 is without current.
  • the grill switch control the supply of current to the fan motor in such a way that the motor is supplied with current at the same time as the heating element of the grill even if the fan switch is turned off.
  • Fig. 5 shows the grill in cross section.
  • the grill plate 16 which is screwed to the top side 9 with screws 55 in screw holes 56 shown in Fig. 4, has a grease gutter.18 next to the back wall 43. At the bottom thereof it has a drain pipe 57 through which collected grease can drop through a hole 58 in the bottom of the trough 14 into a grease collecting bowl 59.
  • This bowl can for example be detachably attached with the aid of a bayonet lock device 60 to a pipe stub 61 extending from the bottom of the grill.
  • a bayonet lock device 60 to a pipe stub 61 extending from the bottom of the grill.
  • the fan is shown in the drawings as an evacuation fan, but a recirculation fan can also be used, which blows air back into the kitchen after purification through a charcoal filter.
  • a recirculation fan can also be used, which blows air back into the kitchen after purification through a charcoal filter.
  • the baffle means In order for the baffle means to produce improved odour collection, it is not necessary that it completely seal the entire bottom surface of the recess. For example, improvement can be obtained even if the baffle is somewhat shallower than the recess and terminates somewhat inside the plane of the front sides of the cabinets, or if there are narrow gaps or small openings between the edges of the baffle and the walls of the recess.
  • the baffle means especially if it is made as an electric grill, can be provided with one or more lamps which illuminates the range.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
EP81850122A 1980-07-25 1981-07-13 Verfahren und Einrichtung zum Abfangen von Kochgerüchen Withdrawn EP0045289A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE8005393 1980-07-25
SE8005393A SE8005393L (sv) 1980-07-25 1980-07-25 Sett och anordning for uppfangning av matos
SE8100962A SE8100962L (sv) 1981-02-11 1981-02-11 Spisflekt och grill
SE8100962 1981-02-11

Publications (1)

Publication Number Publication Date
EP0045289A1 true EP0045289A1 (de) 1982-02-03

Family

ID=26657635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81850122A Withdrawn EP0045289A1 (de) 1980-07-25 1981-07-13 Verfahren und Einrichtung zum Abfangen von Kochgerüchen

Country Status (1)

Country Link
EP (1) EP0045289A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3842148A1 (de) * 1988-12-15 1990-06-21 Miele & Cie Dunstabzugshaube mit einem verschiebbar gefuehrten wrasenauszug
GB2266586A (en) * 1992-04-06 1993-11-03 Cooker Hoods Limited Dr Eye-level grills
CN112228931A (zh) * 2020-09-17 2021-01-15 宁波方太厨具有限公司 一种吸油烟机及其控制方法
CN112728608A (zh) * 2021-01-22 2021-04-30 佛山市顺德区美的洗涤电器制造有限公司 集成灶
CN114688596A (zh) * 2022-06-01 2022-07-01 杭州老板电器股份有限公司 双腔吸油烟机
EP4365494A1 (de) * 2022-11-04 2024-05-08 Faber S.p.A. Küchenabzugshaube und kochsystem

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2481341A (en) * 1945-10-03 1949-09-06 William A Pledger Ventilating device for kitchens and kitchen stoves
US2888871A (en) * 1956-09-14 1959-06-02 Andrew P Fischer Range ventilator
GB1180852A (en) * 1968-01-22 1970-02-11 Donald Delbert Jensen Ventilation System.
DE2508986A1 (de) * 1975-03-01 1976-09-16 Neff Werke Dunstabzugshaube

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2481341A (en) * 1945-10-03 1949-09-06 William A Pledger Ventilating device for kitchens and kitchen stoves
US2888871A (en) * 1956-09-14 1959-06-02 Andrew P Fischer Range ventilator
GB1180852A (en) * 1968-01-22 1970-02-11 Donald Delbert Jensen Ventilation System.
DE2508986A1 (de) * 1975-03-01 1976-09-16 Neff Werke Dunstabzugshaube

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3842148A1 (de) * 1988-12-15 1990-06-21 Miele & Cie Dunstabzugshaube mit einem verschiebbar gefuehrten wrasenauszug
GB2266586A (en) * 1992-04-06 1993-11-03 Cooker Hoods Limited Dr Eye-level grills
GB2266586B (en) * 1992-04-06 1996-06-19 Cooker Hoods Limited Dr Improvements in eye level grills
CN112228931A (zh) * 2020-09-17 2021-01-15 宁波方太厨具有限公司 一种吸油烟机及其控制方法
CN112728608A (zh) * 2021-01-22 2021-04-30 佛山市顺德区美的洗涤电器制造有限公司 集成灶
CN114688596A (zh) * 2022-06-01 2022-07-01 杭州老板电器股份有限公司 双腔吸油烟机
EP4365494A1 (de) * 2022-11-04 2024-05-08 Faber S.p.A. Küchenabzugshaube und kochsystem
WO2024094627A1 (en) * 2022-11-04 2024-05-10 Faber S.P.A. Kitchen extractor hood and cooking system

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT NL

17P Request for examination filed

Effective date: 19820724

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19831019

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BERGMARK, NILS RANDOLF