EP0422316B1 - Valve for controlling the ventilation flow from a kitchen range hood - Google Patents

Valve for controlling the ventilation flow from a kitchen range hood Download PDF

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Publication number
EP0422316B1
EP0422316B1 EP89850352A EP89850352A EP0422316B1 EP 0422316 B1 EP0422316 B1 EP 0422316B1 EP 89850352 A EP89850352 A EP 89850352A EP 89850352 A EP89850352 A EP 89850352A EP 0422316 B1 EP0422316 B1 EP 0422316B1
Authority
EP
European Patent Office
Prior art keywords
valve
opening
pipe stub
range hood
duct
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
EP89850352A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0422316A1 (en
Inventor
Per-Martin Hedman
Gösta Lundqvist
Sven-Olov Wallin
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 AB
Original Assignee
FUTURUM 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 FUTURUM AB filed Critical FUTURUM AB
Priority to EP89850352A priority Critical patent/EP0422316B1/en
Priority to DE1989607215 priority patent/DE68907215T2/de
Priority to DK247190A priority patent/DK174164B1/da
Priority to FI905034A priority patent/FI96633C/fi
Priority to NO904427A priority patent/NO174361C/no
Publication of EP0422316A1 publication Critical patent/EP0422316A1/en
Application granted granted Critical
Publication of EP0422316B1 publication Critical patent/EP0422316B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F24C15/2021—Arrangement or mounting of control or safety systems

Definitions

  • the present invention relates to a valve for controlling the ventilation flow from a kitchen range hood according to the preamble of claim 1.
  • Such a valve is known by our Swedish patent No. 443 643, which comprises a through opening, through which a basic flow of ventilation air passes in the closed position of the valve.
  • the size of this opening can be adjusted at the installation of the valve in the exhaust air outlet of the range hood by cutting off a portion of a conically tapered tube.
  • the present invention intends to improve such a valve by making it so that the size of the basic flow of ventilation air can be adjusted more accurately and even be readjusted later.
  • a valve of the type described by way of introduction is characterized according to the invention in that the valve has means for varying the area of the opening in the closing means.
  • the area of the opening can thereby be set very accurately depending on the measured values of the pressure drop over the valve in the closed position. Furthermore, it is possible to readjust the area of the opening later if this should prove necessary, for example due to altered flow conditions in the exhaust duct.
  • the valve shown in Figure 1 has three main components, namely a valve cover 1, a constriction disk 2 and a pipe stub 3, which supports the valve cover 1 and the constriction disk 2.
  • the valve cover 1 is hinged at 4 to an end flange 5 of the pipe stub 3.
  • the valve cover is dimensioned so that it covers in the closed position of the valve the opening of the pipe stub 3 since the outer peripheral portion will be in contact with an inner portion of the ring surface of the end flange 5.
  • the constriction disk 2 is also fixed in a suitable manner to the flanged end of the pipe stub 3.
  • the entire valve is fixed in a suitable manner in a range hood (not shown) with the non-flanged end of the pipe stub 3 connected to the evacuation duct of a central ventilation system.
  • air is evacuated from the interior of the range hood through the constriction disk 2 and the pipe stub 3 to the evacuation duct.
  • the size of the flow through the constriction disk can be adjusted by changing the size of the opening therein.
  • the constriction disk 2 is provided with, in addition to a minimum opening 6, rupture indications 7 to facilitate the making of a larger opening in the constriction disk.
  • the valve cover 1 also has an opening 8 which, as can best be seen in Figure 1, is made in a portion of the valve cover projecting towards the pipe stub. In the closed position of the valve, this projecting portion of the valve cover 1 extends through the opening 6 of the constriction disk 2. Even when the valve is closed, air will flow from the interior of the range hood through the opening in the valve cover to the evacuation duct.
  • a sliding shutter 9 is slideably mounted in the valve cover 1 with the aid of guides 10. The sliding shutter 9 makes it possible to cover the opening 8 to the desired degree.
  • a scale 11, as shown in Figure 2 can preferably be arranged beside the opening 8 to determine the position of the sliding shutter 9 relative to the opening.
  • a metering outlet 12 is arranged in the pipe stub 3 to make it possible to measure the pressure drop over the valve.
  • the metering outlet 12 consists of a tube opened at both ends, which extends from a position upstream of the flange 5 through the flange peripherially outside the valve cover in its closed position and through the wall of the pipe stub 3 opening into the interior of the pipe stub downstream of the constriction disk 2.
  • the installation and adjustment of a range hood with such a valve is thus facilitated significantly over previously known designs.
  • the size of the openings 6 and 8 in the open and closed positions of the valve can thus be selected and adjusted depending on the measured pressure drop.
  • the valve cover With an opening with an adjustable cross sectional area, a very accurate adjustment of the basic flow of ventilation air can be made.
  • the position of the sliding shutter 9 can be changed if changed flow conditions should arise for any reason in the central ventilation system.
  • the sliding shutter 9 is easily accessible, when the valve is in its closed position, for adjustment from the non-flanged end of the pipe stub 3, if the pipe stub is removed from the evacuation duct.
  • the sliding shutter is also accessible from the underside of the range hood when the range hood filter unit is removed. The position of the sliding shutter can thereby be changed without completely or partially removing the valve.
  • the valve cover 1 also comprises a bow 14, coupled to an actuating mechanism (not shown) disposed in the range hood for swinging the valve cover between a closed and an open position.
  • the valve according to the invention thus provides a simple and exact method of adjusting and/or readjusting the basic flow of ventilation air in a range hood.
  • the range hood can, in one variation, be provided with a mechanism, by means of which the sliding shutter, in the closed position of the valve, can be adjusted from outside the range hood. It is also possible to make the valve cover and the sliding shutter with interaction projections and cavities for indicating various displacement positions for the sliding shutter relative to the valve cover, and a clamping mechanism can be arranged to keep the sliding shutter in the said position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Safety Valves (AREA)
  • Cookers (AREA)
EP89850352A 1989-10-13 1989-10-13 Valve for controlling the ventilation flow from a kitchen range hood Expired - Lifetime EP0422316B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP89850352A EP0422316B1 (en) 1989-10-13 1989-10-13 Valve for controlling the ventilation flow from a kitchen range hood
DE1989607215 DE68907215T2 (de) 1989-10-13 1989-10-13 Ventil zur Regelung des Luftstroms einer Küchenhaube.
DK247190A DK174164B1 (da) 1989-10-13 1990-10-12 Spjældmekanisme til at regulere luftstrømmen fra en køkkenventilator
FI905034A FI96633C (fi) 1989-10-13 1990-10-12 Pelli liedenkuvusta tulevan ilmavirtauksen säätelemiseksi
NO904427A NO174361C (no) 1989-10-13 1990-10-12 Ventil for regulering av luftströmmen fra en komfyr-avtrekksenhet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89850352A EP0422316B1 (en) 1989-10-13 1989-10-13 Valve for controlling the ventilation flow from a kitchen range hood

Publications (2)

Publication Number Publication Date
EP0422316A1 EP0422316A1 (en) 1991-04-17
EP0422316B1 true EP0422316B1 (en) 1993-06-16

Family

ID=8203270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89850352A Expired - Lifetime EP0422316B1 (en) 1989-10-13 1989-10-13 Valve for controlling the ventilation flow from a kitchen range hood

Country Status (5)

Country Link
EP (1) EP0422316B1 (no)
DE (1) DE68907215T2 (no)
DK (1) DK174164B1 (no)
FI (1) FI96633C (no)
NO (1) NO174361C (no)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728660A1 (fr) * 1994-12-21 1996-06-28 Barbarin Laurent Bouche d'extraction a double debit pour la ventilation des cuisines et pieces similaires des locaux d'habitation
EP2309192A3 (en) * 2009-09-25 2011-11-30 Netto Air ApS Cooker hood assembly
CN107842887B (zh) * 2017-10-19 2020-01-31 广东美的厨房电器制造有限公司 油烟机
CN108224529B (zh) * 2018-03-08 2024-08-16 杭州老板电器股份有限公司 补风阀及中央油烟净化设备
CN111207423B (zh) * 2018-11-21 2022-03-18 宁波方太厨具有限公司 一种高层楼宇烟道止回阀的预设角度控制方法
CN111207421B (zh) * 2018-11-21 2022-03-18 宁波方太厨具有限公司 一种高层楼宇烟道止回阀的预设角度控制方法
CN109945256B (zh) * 2019-03-07 2020-07-07 佛山市顺德区美的洗涤电器制造有限公司 用于油烟机的阀组件和具有其的油烟机
EP3792530B1 (en) * 2019-09-12 2023-07-19 Franke Futurum AB Fume extractor hood and ventilation system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281768A2 (de) * 1987-03-07 1988-09-14 Preh-Werke GmbH & Co. KG Luftausströmvorrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE586540C (de) * 1931-08-18 1933-10-23 Heinrich Hofmeister Dunstabzugshaube fuer Herde
US3888166A (en) * 1974-04-12 1975-06-10 Gen Electric Molded plastic flue damper

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281768A2 (de) * 1987-03-07 1988-09-14 Preh-Werke GmbH & Co. KG Luftausströmvorrichtung

Also Published As

Publication number Publication date
NO174361B (no) 1994-01-10
DK247190D0 (da) 1990-10-12
DE68907215D1 (de) 1993-07-22
DK174164B1 (da) 2002-07-29
EP0422316A1 (en) 1991-04-17
FI96633B (fi) 1996-04-15
DE68907215T2 (de) 1993-11-25
NO174361C (no) 1994-04-20
NO904427D0 (no) 1990-10-12
FI96633C (fi) 1996-07-25
DK247190A (da) 1991-04-14
FI905034A0 (fi) 1990-10-12
NO904427L (no) 1991-04-15

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