EP0615069B1 - Roue de ventilateur - Google Patents

Roue de ventilateur Download PDF

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Publication number
EP0615069B1
EP0615069B1 EP94102474A EP94102474A EP0615069B1 EP 0615069 B1 EP0615069 B1 EP 0615069B1 EP 94102474 A EP94102474 A EP 94102474A EP 94102474 A EP94102474 A EP 94102474A EP 0615069 B1 EP0615069 B1 EP 0615069B1
Authority
EP
European Patent Office
Prior art keywords
blades
support disc
fan rotor
fan
radially
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
EP94102474A
Other languages
German (de)
English (en)
Other versions
EP0615069A1 (fr
Inventor
Wilfried Durth
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.)
Rational AG
Original Assignee
Rational AG
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 Rational AG filed Critical Rational AG
Publication of EP0615069A1 publication Critical patent/EP0615069A1/fr
Application granted granted Critical
Publication of EP0615069B1 publication Critical patent/EP0615069B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers

Definitions

  • the invention relates to a fan wheel for a circulating radial fan of a cooking chamber or the like, with blades which project substantially parallel to the axis of rotation of the fan wheel from a support disk facing a housing wall of the cooking chamber.
  • Circulation blowers are often used in cooking areas of commercial kitchen appliances or the like, which serve to even out the atmosphere inside the cooking space when treating items to be cooked in the cooking space, such as solid dishes.
  • the cooking chamber atmosphere often has particulate components, such as, in particular, fat particles, which are to be removed from the cooking chamber atmosphere as quickly as possible while the fan of the circulating fan is running.
  • FR-A 482 430 discloses a fan wheel with which an essentially tangential flow is formed. This flow is achieved by the curved formation of blades, which guide the flow in the tangential direction.
  • the disadvantage of this is that such a fan wheel can only be operated in one direction of rotation.
  • the fan wheel contains an arrangement of flow channels also in areas which are in the vicinity of the cooking space to be vented. A return of air that is actually to be removed with grease particles to the cooking space can therefore occur under unfavorable circumstances. There is therefore a risk of fat particles burning on heating elements inside the cooking space.
  • the invention has for its object to ensure a reliable separation of fat particles or condensate from the cooking chamber atmosphere in a structurally simple manner and without providing additional separating devices.
  • this object is achieved in that at least between some of the blades near the support disk, but at a distance from this guide plates are arranged, the radially outer outer edge of which is substantially aligned with the outer circumference of the fan wheel, the radially inner inner edge of which is spaced from the axis of rotation of the fan wheel lies and which each form a nozzle device for generating a radially outward gas flow near the support disk with the support disk and the respectively adjacent two blades.
  • the guide plates are provided between all pairs of blades.
  • the radial side edges of the guide plates are attached to the respectively adjacent two blades.
  • the guide plates are formed inclined from their inner edge to their outer edge in the direction of the support disk.
  • the invention is based on the surprising finding that it is possible to drain condensate from the cooking space of commercial kitchen appliances or the like, using a circulating radial fan dispose reliably by creating nozzle devices near the support disk of the fan wheel by the guide plates provided according to the invention, which generate such a radially outward flow that fat particles or the like, which are in the cooking chamber atmosphere, when deflecting from the axial direction of flight, with respect the axis of rotation of the fan wheel, impinge in the direction of the nozzle devices on the support disks or are guided radially outward through the nozzle devices onto baffle plates or the like.
  • the condensate particles, particles and the like can easily be supplied to separating devices, such as a condensate drain opening.
  • the radial mounting of the blades makes it possible in particular to reverse the direction of rotation of the fan wheel during the cooking process, preferably at intervals, and thus to avoid quasi-static flow patterns. Uneven heat distribution within the cooking space can be avoided.
  • the fan wheel according to the invention has, in the exemplary embodiment shown there, a number of radial blades 10 which project substantially parallel to an axis of rotation 12 of the fan wheel from a support disk 14 which, after the fan wheel has been installed, into the circulation -Radial blower of a cooking space of a commercial kitchen appliance of a housing wall facing the cooking space, which is penetrated by a drive shaft of the fan wheel.
  • the blades 10 are welded to the support disk 14.
  • the blades 10 of the fan wheel are welded to a support ring 16.
  • Baffles 18 are arranged between the individual blades 12 and are welded to the respectively adjacent blades 10.
  • the radially inner inner edge of the guide plates 18 is arranged at a distance from the axis of rotation 12 of the fan wheel, while the radially outer outer edge of the guide plates 18 is essentially aligned with the outer circumference of the fan wheel.
  • the guide plates 18 are formed inclined from their inner edge to their outer edge in the direction of the support disk 14, as can be seen in particular from FIG. 2, so that a nozzle-like cross section is produced which points radially outward from the axis of rotation 12 to the circumference of the fan wheel.
  • the guide plates 18 provided according to the invention have the effect that a radially outward flow is generated near the support disk 14 of the fan wheel, which leads to the fact that grease or moisture particles or the like, which separate from the cooking space volume on the support disk 14, radially through the between the support disk 14 and the respective guide plate 18 nozzle are conveyed to the outside, where they can be easily removed to a drain opening or the like via corresponding deflector plates or the like.
  • the support disc 14, the support ring 16, the blades 10 and the baffles 18 are made of sheet metal in the embodiment shown. Instead, it could also be readily provided that one or more of these elements are made of plastic or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Power Steering Mechanism (AREA)

Claims (4)

  1. Roue de ventilateur pour une soufflante de circulation d'une enceinte de cuisson ou analogue, comprenant des aubes (10) qui dépassent, sensiblement parallèlement à l'axe de rotation (12) de la roue de ventilateur, d'un disque d'appui (14) tourné vers une paroi de l'enceinte de cuisson, comprenant au moins des tôles de guidage (18) qui sont disposées entre certaines des aubes (10) à distance du disque d'appui (14), dont le bord extérieur radial est sensiblement aligné avec la périphérie extérieure de la roue de ventilateur et dont le bord intérieur radial se trouve à distance de l'axe de rotation (12) de la roue de ventilateur, caractérisée en ce que les tôles de guidage (18) forment, avec le disque d'appui (14) et les aubes (10) voisines, disposées radialement et rectilignes, un dispositif formant tuyère pour produire, à proximité du disque d'appui (14), un écoulement gazeux dirigé radialement vers l'extérieur.
  2. Roue de ventilateur selon la revendication 1, caractérisée en ce que des tôles de guidage (18) sont prévues entre toutes les paires d'aubes (10).
  3. Roue de ventilateur selon la revendication 1 ou 2, caractérisée en ce que les bords latéraux radiaux des tôles de guidage (18) sont fixés aux deux aubes voisines (10).
  4. Roue de ventilateur selon l'une des revendications précédentes, caractérisée en ce que les tôles de guidage (18) sont inclinées de leur bord intérieur vers leur bord extérieur en direction du disque d'appui (14).
EP94102474A 1993-03-09 1994-02-18 Roue de ventilateur Expired - Lifetime EP0615069B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4307405A DE4307405C1 (de) 1993-03-09 1993-03-09 Lüfterrad
DE4307405 1993-03-09

Publications (2)

Publication Number Publication Date
EP0615069A1 EP0615069A1 (fr) 1994-09-14
EP0615069B1 true EP0615069B1 (fr) 1997-05-14

Family

ID=6482335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94102474A Expired - Lifetime EP0615069B1 (fr) 1993-03-09 1994-02-18 Roue de ventilateur

Country Status (6)

Country Link
EP (1) EP0615069B1 (fr)
JP (1) JPH06299992A (fr)
AT (1) ATE153107T1 (fr)
DE (2) DE4307405C1 (fr)
ES (1) ES2103507T3 (fr)
GR (1) GR3023731T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7165942B2 (en) 2002-08-22 2007-01-23 Rational Ag Fan impeller with integrated grease separation, especially for cooking appliance
EP2372163A1 (fr) 2010-04-01 2011-10-05 Convotherm Elektrogeräte GmbH Roue de ventilateur

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59701287D1 (de) † 1997-12-23 2000-04-20 Eloma Gmbh Groskuechentechnik Verfahren zum Entfeuchten eines Garraumes eines Dampfgargerätes sowie Vorrichtung hierfür
DE10315341C5 (de) * 2003-04-03 2009-07-30 Mkn Maschinenfabrik Kurt Neubauer Gmbh & Co. Gargerät mit einem Gebläse mit Radialgebläserad und Abscheideelement
EP1961969A3 (fr) 2007-02-26 2009-10-21 Josip Pavetic Roue de ventilateur radiale
EP1961968A1 (fr) 2007-02-26 2008-08-27 Josip Pavetic Roue de ventilateur radial et ventilateur radial équipé de celle-ci doté d'une protection contre la fermeture
JP2009097448A (ja) * 2007-10-17 2009-05-07 Rokugo Mfg Co Ltd ラジアルファン
EP2143958A1 (fr) * 2008-07-07 2010-01-13 Josip Pavetic Ventilateur installé dans un tuyau
CN106051871A (zh) * 2016-07-25 2016-10-26 佛山市科思博科技有限公司 家用油烟净化器
CN106123084A (zh) * 2016-09-19 2016-11-16 武汉佳福节能环保高科股份有限公司 一种家用环保净化油烟机
JP2019052801A (ja) * 2017-09-15 2019-04-04 東芝ホームテクノ株式会社 加熱調理器
CN217842125U (zh) * 2020-11-09 2022-11-18 宁波富佳实业股份有限公司 风机流道及风机

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR465224A (fr) * 1912-11-30 1914-04-10 Bbc Brown Boveri & Cie Dispositif pour renforcer les ailettes des ventilateurs
FR482430A (fr) * 1915-07-30 1917-03-20 Green Fuel Economizer Company Ventilateur centrifuge semi-silencieux
US1877347A (en) * 1927-08-19 1932-09-13 Clarage Fan Company Fan wheel
GB305800A (en) * 1928-01-25 1929-02-14 Horace Stanley Pochin Improvements in or relating to centrifugal fans
GB623149A (en) * 1947-04-21 1949-05-12 Svenska Flaektfabriken Ab Improvements in and relating to fan-wheels
GB936195A (en) * 1960-08-19 1963-09-04 Dowty Rotol Ltd Impellers and turbine wheels
GB968529A (en) * 1961-10-12 1964-09-02 Karl Prestl Improvements in or relating to blowers
DE1232697B (de) * 1962-04-05 1967-01-19 Babcock & Wilcox Dampfkessel Geblaeseschaufelrad fuer die Foerderung staubhaltiger Gase
DE1503650B2 (de) * 1965-12-23 1970-05-21 VEB Turbowerke Meißen, Meißen Schutzvorrichtung für ein radiales Ventilatorlaufrad zur Förderung staubhaltiger Gase
SE385092B (sv) * 1975-11-05 1976-06-08 Futurumverken Ab Koksventilator
DE3116171C2 (de) * 1981-04-23 1987-07-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Back- und Bratofen
DE3325695A1 (de) * 1983-07-14 1985-01-24 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Radialluefter
DE8908443U1 (de) * 1989-07-11 1990-11-08 Société d'Investissement Industriel et Immobilier S.I.I.I., Ingwiller Radialgebläse, insbesondere für Küchendunstabzugshauben

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7165942B2 (en) 2002-08-22 2007-01-23 Rational Ag Fan impeller with integrated grease separation, especially for cooking appliance
EP2372163A1 (fr) 2010-04-01 2011-10-05 Convotherm Elektrogeräte GmbH Roue de ventilateur
WO2011120659A1 (fr) 2010-04-01 2011-10-06 Convotherm-Elektrogeräte Gmbh Roue de ventilateur équipé de moyens déflecteurs pour les impuretés

Also Published As

Publication number Publication date
DE59402701D1 (de) 1997-06-19
EP0615069A1 (fr) 1994-09-14
GR3023731T3 (en) 1997-09-30
DE4307405C1 (de) 1994-11-17
ES2103507T3 (es) 1997-09-16
JPH06299992A (ja) 1994-10-25
ATE153107T1 (de) 1997-05-15

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