EP1970635B1 - Four à air chaud doté de déflecteurs - Google Patents

Four à air chaud doté de déflecteurs Download PDF

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Publication number
EP1970635B1
EP1970635B1 EP08011554A EP08011554A EP1970635B1 EP 1970635 B1 EP1970635 B1 EP 1970635B1 EP 08011554 A EP08011554 A EP 08011554A EP 08011554 A EP08011554 A EP 08011554A EP 1970635 B1 EP1970635 B1 EP 1970635B1
Authority
EP
European Patent Office
Prior art keywords
fan
separating wall
inner area
exhaust openings
muffle
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.)
Not-in-force
Application number
EP08011554A
Other languages
German (de)
English (en)
Other versions
EP1970635A2 (fr
EP1970635A3 (fr
Inventor
Peter Renggli-Ehrat
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.)
V-Zug AG
Original Assignee
V-Zug 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 V-Zug AG filed Critical V-Zug AG
Priority to AT08011554T priority Critical patent/ATE550608T1/de
Priority to EP08011554A priority patent/EP1970635B1/fr
Publication of EP1970635A2 publication Critical patent/EP1970635A2/fr
Publication of EP1970635A3 publication Critical patent/EP1970635A3/fr
Application granted granted Critical
Publication of EP1970635B1 publication Critical patent/EP1970635B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
    • F24C15/325—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation electrically-heated

Definitions

  • the invention relates to a hot-air oven with a muffle and a fan chamber behind the muffle, wherein the fan chamber is separated from the muffle by a partition wall.
  • a fan and a heater are arranged in the fan room .
  • the partition wall is divided into an inner area radially inside the fan wheel and an outer area radially outside the fan wheel.
  • Intake openings are provided in the inner region through which the air passes from the muffle to the fan wheel.
  • exhaust openings are provided, as well as baffles for deflecting the air from the fan into the exhaust openings.
  • Such ovens allow to suck air from the muffle in the fan room, to heat there and then to re-direct into the muffle.
  • WO 2007/020584 and US 2006/0272632 describe devices in which deflecting arrangements are provided in the partition at the openings to redirect the air into the muffle into it.
  • WO 2009/074423 represents an older right to this property right.
  • Object of the present invention is to provide an oven of the type mentioned, in which the heat is well distributed in the muffle.
  • At least one blow-out opening and, associated with each blow-out opening, at least one deflection arrangement are provided in the dividing wall horizontally next to the inner area.
  • Each deflection arrangement comprises at least two baffle sections which are mutually aligned not parallel and inclined differently to the radial direction.
  • baffles are provided, which extend transversely to the partition wall and are arranged with respect to the direction of rotation of the fan in front of the exhaust openings.
  • the baffles have transverse to the partition to a greater extent than the baffles, so that the striking over the baffles air can get caught in the baffles.
  • radial and radial direction refer to the axis of rotation of the fan wheel.
  • partition according to the following description is divided into a “region radially inside the fan” and a “region radially outside the fan”. This is to be understood as meaning that the area radially within the fan wheel is the projection of the fan speed during its rotational movement interspersed space corresponds perpendicular to the partition, while the area is formed radially outside the fan from the rest of the partition.
  • the figures show the housing of the fan room 1 of a hot air oven. This housing forms the rear end of the muffle of the device, with in FIGS. 2 and 3 the side walls 2 of the muffle are partially visible.
  • the fan room 1 is closed at the back by a rear wall 3 and at the front by a partition wall 4.
  • Rear wall 3 and partition 4 are formed by preformed sheets, which are interconnected in its edge region 9.
  • a fan 5 is arranged, which is best in Fig. 4 and 5 is apparent.
  • the fan 5 is rotatable by a rotary drive about a perpendicular to the partition wall 4 rotating axis 6, wherein the direction of rotation 7 in Fig. 4 and 5 is drawn.
  • the partition may be divided into an inner region 10 radially inside the fan 5 and an outer region 11 radially outside the fan 5, see Fig. 1 ,
  • approximately annular suction openings 12 are provided in the partition wall 4, through which air is sucked from the rotating fan 5 of the muffle ago.
  • exhaust openings 13a - 13d are provided, through which the air is blown from the rotating fan 5 into the muffle.
  • a heater 14 of which the air, which was sucked by the muffle, heated in the fan room before it is blown back into the muffle.
  • baffles 16a - 16d are arranged, see in particular Fig. 4 and 5 , They serve to redirect the air coming from the fan 5 in the exhaust ports, and also reduce the swirl of the flow field in the fan chamber 1. They are each arranged with respect to the direction of rotation 7 of the fan immediately after the exhaust ports 13a - 13d arranged so that they Collect sweeping air through the exhaust openings and divert them into the respective exhaust opening. For this purpose, they are also arranged at least partially inclined, so that they are able to give the air flowing parallel to the partition wall 4 an impulse toward the muffle.
  • the deflecting plates 16a-16d are fastened to the dividing wall 4.
  • the Deflection plates 16a, 16b of the lateral exhaust openings 13a, 13b are made as separate parts which are welded to the partition wall 4, while it is at the baffles 16c, 16d of the lower and upper exhaust openings 13c, 13d to angled tongues of the sheet of the rear wall 4th is.
  • baffles 16a, 16b baffles 17a, 17b attached to the partition wall 4, which best from Fig. 5 can be seen. They extend transversely to the partition wall 4 and are arranged with respect to the direction of rotation 7 of the fan immediately before the exhaust ports 13a, 13b. Their task is to avoid a direct penetration of the partition wall 4 along sweeping air from the fan 5 in the exhaust ports 13a, 13b. Without them, a relatively strong, substantially parallel to the rear wall of the exhaust openings 13a, 13b emerging air flow generated in the muffle.
  • baffles 16a, 16b have a greater extension transversely to the partition wall 4 than the same outlet opening 13a and 13b associated baffles 17a and 17b, so that over the baffles 17a, 17b stroking air can get caught in the baffles 16a, 16b.
  • the baffles 17 a, 17 b are formed by angled tongues of the sheet of the rear wall 4.
  • the two side exhaust openings 13a, 13b have an elongated, curved, shape. In the present example, it is a V-shape, but, for example, a crescent shape is also conceivable, or several individual blow-off openings with associated deflection plates oriented differently from the radial direction may be provided.
  • the respective baffles 13a, 13b are each formed by a deflection arrangement which, for example, as shown in the figures, consists of a bent sheet metal or of a plurality of individual sheets.
  • Each deflection arrangement has two deflecting plate sections 18a1, 18a2, 18b1, 18b2 which are not parallel to one another and are inclined radially to one another, so that the air deflected at the corresponding deflecting section is deflected into a somewhat different solid angle and thus better distributed in the muffle.
  • the Umlenkblechabitese 18al, 18a2 or 18b1, 18b2 each deflection arrangement are each formed by two straight, at an angle to each other Umlenkblechabitesen, which is manufacturing technology relatively simple. Conceivable, however, are curved instead of straight baffle sections.
  • the embodiment described so far can be modified in various points.
  • the number and the exact arrangement of the exhaust openings 13a, 13b, 13c, 13d can be adapted to the respective requirements.
  • the exact orientation of the exhaust openings must also be adjusted depending on the respective requirements. In particular, it depends on the exact air flow geometry in the fan room 1, which in turn is a function of the geometry of the device and the fan wheel. It can be optimized experimentally, for example.
  • the curved elongated exhaust ports 13a, 13b are arranged so that they Vertex (ie, the tip of the "V” in the case of V-shaped openings) is arranged in the direction of rotation 7 in front of their legs, resulting in a better distribution of the air currents.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Furnace Details (AREA)
  • Tunnel Furnaces (AREA)

Claims (7)

  1. Four à chaleur tournante avec une moufle et un compartiment de ventilation (1) derrière la moufle, le compartiment de ventilation (1) étant séparé de la moufle par un paroi de séparation (4), un chauffage (14) et une roue de ventilateur (5) étant arrangées à l'intérieur du compartiment de ventilation (1), la roue de ventilateur (5) étant actionnée afin de tourner autour d'un axe de rotation (6) arrangé transversalement par rapport au paroi de séparation (4), au moins un orifice d'aspiration (12) pour l'aspiration d'air dans le compartiment de ventilation (1) étant prévu dans le paroi de séparation (4) dans une zone intérieure (10) radialement à l'intérieur de la roue de ventilateur (5) et des orifices de décharge (13a - 13d) pour décharger d'air dans la moufle étant prévus dans une zone extérieure (11) radialement à l'extérieur de la roue de ventilateur (5), des plaques de guidage (16a, 16b) pour détourner d'air de la roue de ventilateur (5) à l'intérieur des orifices de décharge (13a - 13d) étant prévues du côté arrière du paroi de séparation (4), au moins un orifice de décharge (13a, 13b) et également au moins un arrangement de guidage composé d'au moins une plaque de guidage (16a, 16b) étant arrangés dans le paroi de séparation (4) horizontalement à côté de la zone intérieure (10), les plaques de guidage (16a, 16b) étant arrangées après les orifices de décharge (13a - 13d) par rapport à la direction de rotation de la roue de ventilateur (5), des plaques d'accumulation (17a, 17b) étant présentes outre les plaques de guidage (16a, 16b) au moins pour une partie des orifices de décharge (13a, 13b), qui sont arrangées horizontalement à côté de la zone intérieure (10), les plaques de guidage (16a, 16b) ayant une plus grande extension transversale par rapport au paroi de séparation (4) que les plaques d'accumulation (17a, 17b) qui s'étendent transversalement par rapport au paroi de séparation (4) et qui sont arrangées avant les orifices de décharge (13a, 13b) par rapport à la direction de rotation de la roue de ventilateur (5), caractérisé en ce que chaque arrangement de guidage comprend au moins deux sections de plaque de guidage (18a1, 18a2, 18b1, 18b2) non-parallèles l'une par rapport à l'autre, qui sont arrangées différemment oblique par rapport à la direction radiale et en ce qu'au moins les orifices de décharge (13a, 13b) qui sont situés horizontalement à côté de la zone intérieure (10) ont une forme allongée et courbée.
  2. Four à chaleur tournante selon la revendication 1, les plaques d'accumulation (17a, 17b) étant attachées au paroi de séparation (4).
  3. Four à chaleur tournante selon l'une des revendications précédentes, les plaques de guidage (16a, 16b) étant arrangées au paroi de séparation (4).
  4. Four à chaleur tournante selon l'une des revendications précédentes, au moins les orifices de décharge (13a, 13b) qui sont situés horizontalement à côté de la zone intérieure (10) étant en forme de V.
  5. Four à chaleur tournante selon l'une des revendications précédentes, au moins une partie de l'arrangement de guidage comprenant deux sections de plaque de guidage (18a1, 18a2, 18b1, 18b2) arrangées radialement l'une après l'autre, chacune de manière droite et ayant un angle l'une par rapport à l'autre.
  6. Four à chaleur tournante selon l'une des revendications précédentes, la zone extérieure (11) ayant une section basse située plus bas que la zone intérieure (10), et également une section haute qui est plus haute que la zone intérieure (10), au moins un orifice de décharge (13c, 13d) avec une plaque de guidage (16c, 16d) étant arrangé dans la section haute et/ou la section basse.
  7. Four à chaleur tournante selon l'une des revendications précédentes, au moins deux orifices de décharge (13a, 13b) avec des arrangements de guidage étant arrangés dans le paroi de séparation (4) horizontalement à côté de la zone intérieure (10), les orifices de décharge étant arrangés sur des côtés opposés de la zone intérieure (10).
EP08011554A 2008-06-26 2008-06-26 Four à air chaud doté de déflecteurs Not-in-force EP1970635B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT08011554T ATE550608T1 (de) 2008-06-26 2008-06-26 Heissluft-backofen mit umlenkblechen
EP08011554A EP1970635B1 (fr) 2008-06-26 2008-06-26 Four à air chaud doté de déflecteurs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08011554A EP1970635B1 (fr) 2008-06-26 2008-06-26 Four à air chaud doté de déflecteurs

Publications (3)

Publication Number Publication Date
EP1970635A2 EP1970635A2 (fr) 2008-09-17
EP1970635A3 EP1970635A3 (fr) 2009-02-18
EP1970635B1 true EP1970635B1 (fr) 2012-03-21

Family

ID=39657559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08011554A Not-in-force EP1970635B1 (fr) 2008-06-26 2008-06-26 Four à air chaud doté de déflecteurs

Country Status (2)

Country Link
EP (1) EP1970635B1 (fr)
AT (1) ATE550608T1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010076149A1 (fr) * 2008-12-30 2010-07-08 Arcelik Anonim Sirketi Four comportant une plaque de recouvrement de ventilateur
JP5830685B2 (ja) * 2010-01-18 2015-12-09 パナソニックＩｐマネジメント株式会社 加熱装置
WO2012062679A1 (fr) * 2010-11-12 2012-05-18 Arcelik Anonim Sirketi Four à convection forcée
ES2405406B1 (es) * 2010-12-16 2014-05-13 BSH Electrodomésticos España S.A. Mufla para un aparato de cocción, aparato de cocción con una mufla correspondiente, y procedimiento para ejecutar un funcionamiento de pirólisis de un aparato de cocción
FR2975470B1 (fr) * 2011-05-19 2013-05-17 Fagorbrandt Sas Four de cuisson comprenant une zone d'un compartiment de circulation d'air sans mise en circulation d'air par au moins un ventilateur
CN102995367A (zh) * 2011-09-09 2013-03-27 博西华电器（江苏）有限公司 家用电器
WO2015165495A1 (fr) * 2014-04-29 2015-11-05 Arcelik Anonim Sirketi Four électrique présentant un profil de diffusion de chaleur uniforme amélioré
EP3109558B1 (fr) * 2015-06-24 2019-12-04 Electrolux Appliances Aktiebolag Dispositif de chauffage par convection pour un four
CN108245690A (zh) * 2018-03-14 2018-07-06 广东美的厨房电器制造有限公司 消毒柜

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060272632A1 (en) * 2005-06-01 2006-12-07 Maytag Corp. Airflow system for a convection oven
WO2009074423A2 (fr) * 2007-12-12 2009-06-18 BSH Bosch und Siemens Hausgeräte GmbH Unité de soufflerie pour appareil de cuisson

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2557867C3 (de) * 1975-12-22 1979-11-08 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Umluftofen
AU8855482A (en) * 1981-10-02 1983-04-14 Gas & Fuel Corp. of Victoria Oven distributer unit
EP0105931B1 (fr) * 1982-04-14 1988-07-13 Matsushita Electric Industrial Co., Ltd. Dispositif de cuisson du type a circulation d'air chaud
AU575743B2 (en) * 1986-05-15 1988-08-04 Kabushiki Kaisha Toshiba Circulating air cooker
FR2623883B1 (fr) * 1987-11-27 1991-05-10 Seb Sa Four de cuisson electrique a ventilation
US5485780A (en) * 1993-02-26 1996-01-23 Food Automation Service Techniques, Inc. Rotisserie oven
RU2007111953A (ru) * 2004-08-31 2008-10-10 Шарп Кабусики Кайся (Jp) Духовой шкаф
WO2007020584A1 (fr) * 2005-08-12 2007-02-22 Arcelik Anonim Sirketi Dispositif de cuisson

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060272632A1 (en) * 2005-06-01 2006-12-07 Maytag Corp. Airflow system for a convection oven
WO2009074423A2 (fr) * 2007-12-12 2009-06-18 BSH Bosch und Siemens Hausgeräte GmbH Unité de soufflerie pour appareil de cuisson

Also Published As

Publication number Publication date
EP1970635A2 (fr) 2008-09-17
EP1970635A3 (fr) 2009-02-18
ATE550608T1 (de) 2012-04-15

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