DE2747097A1 - Food heating compartment with fan circulating hot air - has water pipe with nozzle spraying water into hot air current and nozzle in front of suction area - Google Patents

Food heating compartment with fan circulating hot air - has water pipe with nozzle spraying water into hot air current and nozzle in front of suction area

Info

Publication number
DE2747097A1
DE2747097A1 DE19772747097 DE2747097A DE2747097A1 DE 2747097 A1 DE2747097 A1 DE 2747097A1 DE 19772747097 DE19772747097 DE 19772747097 DE 2747097 A DE2747097 A DE 2747097A DE 2747097 A1 DE2747097 A1 DE 2747097A1
Authority
DE
Germany
Prior art keywords
hot air
water
nozzle
food
fan
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.)
Pending
Application number
DE19772747097
Other languages
German (de)
Inventor
Wilfried Durth
Herbert Schmidt
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.)
Buderus AG
Original Assignee
Buderus 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 Buderus AG filed Critical Buderus AG
Priority to DE19772747097 priority Critical patent/DE2747097A1/en
Priority to ZA00783922A priority patent/ZA783922B/en
Publication of DE2747097A1 publication Critical patent/DE2747097A1/en
Pending legal-status Critical Current

Links

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
    • F24C15/327—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation with air moisturising

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Humidification (AREA)

Abstract

The heater for food consists of a food preparation compartment (2) into which food is passed through a door. Hot air is circulated around the preparation compartment (2), by means of a fan (4) which is driven by a motor (3). A water pipe has a spray nozzle on the end, for spraying water into the hot air current. The nozzle is positioned in the middle, in front of the suction area of the fan (4). The water pipe leads through the hot air, so that the water in the pipe, which is sprayed out, is pre-heated. The heater prevents the food from drying out too much.

Description

Gerät zur Wärmebehandlung von Lebensmitteln und SpeisenDevice for the heat treatment of food and dishes

Zur Verbesserung des Wärmeüberganges auf die zu behandelnden Speisen ist es bekannt im Zubereitungsraum ein Gebläse zur Umwälzung der heißen Luft vorzusehen. Die heiße Luft kann den Speisen aber in unerwünschtem Maße Feuchtigkeit entziehen; deshalb wurde bereits vorgeschlagen dem Zubereitungsraum Feuchtigkeit zuzuführen, entweder durch ein vorhandenes Wasserbad oder durch Einleiten von Wasserdampf, bzw. Einspritzen von Wasser. Mit geringstem Aufwand kann die gewünschte Feuchtigkeit durch Einspritzen von Wasser in den Heißluftstrom aufrecht erhalten werden, denn zum Einleiten von Wasserdampf ist ein besonderer Dampferzeuger notwendig.To improve the heat transfer to the food to be treated it is known to provide a fan to circulate the hot air in the preparation room. However, the hot air can remove moisture from the food to an undesirable extent; therefore it has already been suggested to add moisture to the preparation room, either by an existing water bath or by introducing steam or Injecting water. The desired moisture can be achieved with very little effort be maintained by injecting water into the hot air stream, because A special steam generator is required to introduce steam.

Beim Einsprühen von Wasser in den Zubereitungsraum muß aber darauf geachtet werden, daß eine sehr gleichmäßige Verdampfung des Wassers erfolgt, insbesondere wenn das Wasser taktweise eingespritzt wird, weil sonst unerwünschte Druckstöße auftreten.However, when spraying water into the preparation room, care must be taken care must be taken that the water evaporates very evenly, in particular if the water is injected intermittently, otherwise undesirable pressure surges appear.

Gemäß der Erfindung kann dies auf einfachste Weise geschehen, indem das Wasser über eine Zerstäuberdüse zentral in den Ansaugbereich des Gebläses eingespritzt wird.According to the invention, this can be done in the simplest way by the water is injected centrally into the suction area of the blower via an atomizer nozzle will.

In der Zeichnung ist ein AusfUhrungsbeispiel dargestellt.An exemplary embodiment is shown in the drawing.

Es zeigt Fig. 1 den senkrechten und Fig. 2 den waagrechten Schnitt durch ein Gerät.1 shows the vertical section and FIG. 2 shows the horizontal section through a device.

An der Rückwand des mit dem zu erwärmenden Gut durch die Tür 1 beschickbaren Zubereitungsraumes 2 befindet sich ein von Motor 3 angetriebenes Gebläse 4. Die heiße Luft wird vom Gebläse 4 zentral aus dem Zubereitungsraum angesaugt und anschließend an den elektrischen Heizkörpern 5 vorbei über die Luftverteilungsbleche 6 in den Zubereitungsraum zurückgeleitet.On the rear wall of the material to be heated through door 1 Preparation room 2 is a motor 3 driven fan 4. The hot air is sucked in centrally from the preparation room by the fan 4 and then to the electric radiators 5 over the air distribution plates 6 in the To the preparation room.

In den zentralen Ansaugbereich des Gebläses 4 führt eine mit einem taktweise steuerbaren Ventil 7 versehene Wasserleitung 8, welche an ihrem Ende mit einer Wassersprühdüse 9 versehen ist.In the central suction area of the fan 4 leads a with a clockwise controllable valve 7 provided water line 8, which at its end with a water spray nozzle 9 is provided.

Die Wasserleitung 8 wird durch die Heißluft geführt, so daß eine Vorwärmung des zu versprühenden Wassers erfolgt. Hierzu kann die Wasserleitung mehrmals in Windungen um das Gebläse 4 geführt werden.The water pipe 8 is passed through the hot air, so that a preheating of the water to be sprayed takes place. To do this, the water pipe can be pushed in several times Windings are guided around the fan 4.

Bei Wassereinsprüung erfolgt durch die erfindungsgemäße Anordnung eine sehr gleichmäßige Druckentwicklung des Dampfes im Carraum, denn die Verdampfung wird in mehreren Stufen vorbereitet.When water is injected, the arrangement according to the invention takes place a very even pressure development of the vapor in the car space, because the evaporation is prepared in several stages.

a) Zunächst erfolgt eine Wasservorwärmung in der Wasserleitung.a) First, the water is preheated in the water pipe.

b) Das Wasser wird in der Düse in feine Wassertröpfchen versprüht.b) The water is sprayed into fine water droplets in the nozzle.

c) Die Versprüung erfolgt im Ansaugbereich des Gebläses (Unterdruckbereich) wodurch die Wassertröpfchen besonders klein werden.c) The spraying takes place in the suction area of the blower (negative pressure area) whereby the water droplets are particularly small.

d) Das Gebläse verwirbelt die Wassertröpfchen intensiv, so daß bereits ein großer Teil des Wassers Dampfform annimmt.d) The fan swirls the water droplets intensely, so that already much of the water takes on the form of vapor.

e) Eine Nachverdampfung erfolgt an den Heizkörpern.e) Post-evaporation takes place on the radiators.

Durch diese stufenweise Verdampfung werden unangenehme Druckstöße vermieden, wenn Wasser taktweise eingesprüht wird.This gradual evaporation creates unpleasant pressure surges avoided if water is sprayed in intermittently.

LeerseiteBlank page

Claims (3)

Patentansprüche 1.8Gerät zur Wärmebehandlung von Lebensmitteln und Speisen, mit einem Zubereitungsraum in welchem Heißluft mittels eines Gebläses zwangsumgewälzt wird, sowie mindestens einer Düse zum Einspritzen von Wasser in den Heißluftstrom, dadurch gekennzeichnet, daß die Düse zum Einspritzen des Wassers zentral vor der Ansaugöffnung des Gebläses angeordnet ist. Claims 1.8 Device for the heat treatment of food and Food, with a preparation room in which hot air is forcibly circulated by means of a fan as well as at least one nozzle for injecting water into the hot air stream, characterized in that the nozzle for injecting the water centrally in front of the Intake opening of the fan is arranged. 2. Gerät nach Anspruch 1, dadurch gekennzeichnet,daß die Düse zur Ansaugöffnung hin gerichtet ist.2. Apparatus according to claim 1, characterized in that the nozzle for Intake opening is directed towards. 3. Gerät nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß Zufuhrleitung des Wassers als Wasservorwärmer ausgebildet ist.3. Device according to one of claims 1 and 2, characterized in that that the supply line of the water is designed as a water preheater.
DE19772747097 1977-10-20 1977-10-20 Food heating compartment with fan circulating hot air - has water pipe with nozzle spraying water into hot air current and nozzle in front of suction area Pending DE2747097A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19772747097 DE2747097A1 (en) 1977-10-20 1977-10-20 Food heating compartment with fan circulating hot air - has water pipe with nozzle spraying water into hot air current and nozzle in front of suction area
ZA00783922A ZA783922B (en) 1977-10-20 1978-07-07 Ovens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772747097 DE2747097A1 (en) 1977-10-20 1977-10-20 Food heating compartment with fan circulating hot air - has water pipe with nozzle spraying water into hot air current and nozzle in front of suction area

Publications (1)

Publication Number Publication Date
DE2747097A1 true DE2747097A1 (en) 1979-05-03

Family

ID=6021855

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772747097 Pending DE2747097A1 (en) 1977-10-20 1977-10-20 Food heating compartment with fan circulating hot air - has water pipe with nozzle spraying water into hot air current and nozzle in front of suction area

Country Status (2)

Country Link
DE (1) DE2747097A1 (en)
ZA (1) ZA783922B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233535A3 (en) * 1986-02-19 1988-07-20 Eloma Gmbh Bedarfsartikel Zur Gemeinschaftsverpflegung Apparatus and method for cooking food
EP0523489A1 (en) * 1991-07-17 1993-01-20 ZANUSSI GRANDI IMPIANTI S.p.A. Steam generation arrangement for food cooking equipment, in particular ovens and similar appliances
DE4131748A1 (en) * 1991-09-24 1993-03-25 Kueppersbusch Circulating hot air cooking oven - has water pipe and spray device adjacent fan allowing steam cooking
EP0834703A1 (en) * 1996-10-07 1998-04-08 SOCIETE COOPERATIVE DE PRODUCTION BOURGEOIS (Société Coopérative de Production Anonyme à Capital Variable) Forced convection steam oven
FR2775760A1 (en) 1998-03-09 1999-09-10 Bourgeois Prod Coop STEAM OVEN WITH FIXED SPRAY OF SPRAY WATER
EP0980666A1 (en) * 1998-08-17 2000-02-23 Kulbach, Egon Apparatus for combined hot air and steam heating
DE20309404U1 (en) * 2003-06-18 2004-06-09 Rational Ag Cooking appliance with steaming device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233535A3 (en) * 1986-02-19 1988-07-20 Eloma Gmbh Bedarfsartikel Zur Gemeinschaftsverpflegung Apparatus and method for cooking food
EP0383366A1 (en) * 1986-02-19 1990-08-22 Eloma GmbH Bedarfsartikel zur Gemeinschaftsverpflegung Method for steam-cooking food
EP0523489A1 (en) * 1991-07-17 1993-01-20 ZANUSSI GRANDI IMPIANTI S.p.A. Steam generation arrangement for food cooking equipment, in particular ovens and similar appliances
DE4131748A1 (en) * 1991-09-24 1993-03-25 Kueppersbusch Circulating hot air cooking oven - has water pipe and spray device adjacent fan allowing steam cooking
EP0834703A1 (en) * 1996-10-07 1998-04-08 SOCIETE COOPERATIVE DE PRODUCTION BOURGEOIS (Société Coopérative de Production Anonyme à Capital Variable) Forced convection steam oven
FR2754334A1 (en) * 1996-10-07 1998-04-10 Bourgeois Prod Coop STEAM OVEN AND FORCED CONVEXION
US5768982A (en) * 1996-10-07 1998-06-23 Societe Cooperative De Production Bourgeois Convection steam oven
FR2775760A1 (en) 1998-03-09 1999-09-10 Bourgeois Prod Coop STEAM OVEN WITH FIXED SPRAY OF SPRAY WATER
EP0980666A1 (en) * 1998-08-17 2000-02-23 Kulbach, Egon Apparatus for combined hot air and steam heating
DE20309404U1 (en) * 2003-06-18 2004-06-09 Rational Ag Cooking appliance with steaming device
DE10347614B4 (en) * 2003-06-18 2006-07-13 Rational Ag Cooking appliance with steaming device

Also Published As

Publication number Publication date
ZA783922B (en) 1979-12-27

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