EP0551807B1 - Four de cuisson d'aliments à convection forcée. - Google Patents

Four de cuisson d'aliments à convection forcée. Download PDF

Info

Publication number
EP0551807B1
EP0551807B1 EP19930100035 EP93100035A EP0551807B1 EP 0551807 B1 EP0551807 B1 EP 0551807B1 EP 19930100035 EP19930100035 EP 19930100035 EP 93100035 A EP93100035 A EP 93100035A EP 0551807 B1 EP0551807 B1 EP 0551807B1
Authority
EP
European Patent Office
Prior art keywords
oven
pipe
cooking chamber
heat exchange
exchange tube
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
EP19930100035
Other languages
German (de)
English (en)
Other versions
EP0551807A1 (fr
Inventor
Natalino Lazzer
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.)
Lainox Ali SpA
Original Assignee
Lainox SRL
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 Lainox SRL filed Critical Lainox SRL
Publication of EP0551807A1 publication Critical patent/EP0551807A1/fr
Application granted granted Critical
Publication of EP0551807B1 publication Critical patent/EP0551807B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the object of this invention is to improve the combustion chamber, with particular reference to forced convection food ovens.
  • the innovation has a particular, but not exclusive, application in industrial kitchens.
  • an oven can be composed of the control panel and the relative electrical and electronic components, together with an external parallelepiped containment structure with at least one cooking chamber, to which access is possible by a traditional oven door.
  • the heating of the cooking chamber can also be provided by one of three means: by steam, in which case a traditional type boiler is used, with a steam emission pipe directed into the chamber; by convection, or rather, by a fan placed in a space intercommunicating with the cooking chamber, and conveniently surrounded by bundles of thermal exchange tubing; by both steam and convection at the same time.
  • the lower part of the oven also contains a gas burner and an associated combustion chamber.
  • the current applicant also holds the Italian patent No.1158054 of 15.01.1982, the subject of which is a forced convection oven for cooking foods.
  • a combustion chamber essentially delimited by a parallelepiped structure with a "U" configuration conveniently fixed from below to the base of the cooking chamber, and inside which, with various connections, there is at least one burner arranged longitudinally, so that the flames are directed upwards in direct contact with the lower surface of the cooking chamber's base.
  • the openings of the heat exchange tube bundles are welded to the bottom of the cooking chamber and in logical correspondence with the underlying burner. These remove the combustion gases and are in direct communication with the combustion chamber.
  • the oven base is made of steel plate and is formed to contact the other sides of the oven and thus define the cooking chamber.
  • EP-A-0 344 743 discloses a forced-convention gas cooking oven comprising a fan and a heat exchanger to circulate hot air around foods placed in the cooking chamber of the oven, the heat exchanger being composed of a plurality of U-shaped pipes distributed concentrically about the periphery of the fan in a symmetrical and uniform manner, the ends of the pipes communicating with ctwo oncentric collectors which in turn communicate with a burner and a combustion gas outlet port respectively.
  • the aim of the present invention is to prevent the above mentioned drawbacks.
  • a logically controlled forced convection oven (A), particularly one for cooking food, is essentially composed of an external parallelepiped covering (1) and a cooking chamber (2), the inside of which is accessed by a traditional oven door which, in this case, is located at the front of the oven (A).
  • a traditional oven door which, in this case, is located at the front of the oven (A).
  • an intercommunicating ventilation antechamber inside which there is a fan (3) surrounded by a mass tube bundles (4) which, comprising the heat exchanger, rise from the base (5) of the cooking chamber (2) until at the top of the oven they are carried to a waste device.
  • burner (6) which in this case comprises two transverse pipes (6', 6''), each having groups of distribution nozzles (12) above and along their length to direct the flame upwards in correspondence with the openings (4') of the tube bundles (4).
  • the base (5) particularly in the area between the openings (4') of the groups of tube bundles (4), is not directly in contact with the flame, as the nozzles are arranged approximately opposite the ends of the burners (6) in correspondence, as stated above, with the openings (4') of the the tube bundles (4).
  • first metal plate (5) which is also the base of the cooking chamber(2).
  • first metal plate (5) which is also the base of the cooking chamber(2).
  • insulating material in this case made of "armaflex" (commercial name of a common heat resistant insulating material) (8), which is supported by a second metal plate (9) which, together with a third (9'), suitably separated, allows a second space to be obtained (10).
  • a manifold pipe (11) is fitted so as to be dissociated and coaxial to the opening (4') of each pipe (4) in the tube bundle and extends several centimetres into the pipe.
  • the lower part of the manifold pipe has a round disc flange (11') which extends and moves freely in the respective lower interspace (10).
  • the coaxial pipe (11) which can efficiently absorb both its own deformations independently of the remaining structure and expansion of the metal plates without causing breaking points.

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)
  • Baking, Grill, Roasting (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (4)

  1. Fourneau du type essentiellement avec: un panneau de contrôle avec toutes les parts electriques et electroniques, un conteneur extérieur parallélépipèdique avec au moins une chambre de cuisson (2), accessible par une porte de fourneau, et une unité de chauffage avec un ventilateur entouré de faisceaux de tubes d'échange de chaleur (4-4') situés dans une antichambre de ventilation liée à cette unité, qui fait part de la chambre de cuisson (2), tandis que au-dessous du fourneau en correspondance avec les faisceaux de tubes (4-4') il y a un brûleur à gas, logé dans une chambre de combustion (7) séparée par une paroi de séparation de la chambre de cuisson et dans laquelle de la dite paroi de séparation partent les faisceaux de tubes d'échange de chaleur (4-4') pour enlever les gas brûlés de la chambre de combustion; caractérisé du fait que: la dite paroi de séparation qui sépare la chambre de combustion de la chambre de cuisson a au moins deux interspaces superposés (8,10), positionnés au moins en correspondance avec la connection de la paroi avec les dits faisceaux de tubes d'échange de chaleur (4-4'), dont le premier en position supérieure (8) contient matériel d'isolation et le second, en position inférieure (10) contient l(es) extrémité(s) d'une extension extérieure à bride à disque (11') d'une connection de tube dissociée et insérée coaxialement dans les ouvertures inférieures de chaque tube du dit faisceau de tubes d'échange de chaleur (4-4').
  2. Fourneau selon revendication 1, caractérisé du fait que au-dessus du brûleur (6) dans la chambre de combustion du fourneau (7), en occupant au moins une part de la paroi de séparation (5,8,9,10,9',11') de la chambre de cuisson (2) du fourneau (A) qui correspond à la surface qui regarde la dite antichambre de ventilation, il y a une plate métallique (5) au-dessous de laquelle il se trouve une couche de materiel d'isolation (8) supportée par une seconde plate métallique (9) qui, ensemble avec une troisième (9') à distance convenable forme le dit second interspace (10).
  3. Fourneau selon revendication 1, caractérisé du fait qu'une connection de tube (11) est appliquée de manière dissociée et coaxiale à l'ouverture (4') de chaque tube (4), et s'étend plusieurs centimètres dans le tube, et dans laquelle la partie inférieure de la connection de tube a une bride à disque (11') qui s'étend en se mouvant librement dans l'interspace inférieur (10).
  4. Fourneau selon les revendications précédentes, caractérisé du fait que les brûleurs (6) ont des tuyères de distribution de flamme (12) arrangées exclusivement en correspondance avec la zone immédiatement au-dessous des ouvertures (4'') de chaque tube du faisceau de tubes d'échange de chaleur (4).
EP19930100035 1992-01-08 1993-01-04 Four de cuisson d'aliments à convection forcée. Expired - Lifetime EP0551807B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTV920002U 1992-01-08
IT92TV000002U IT229213Y1 (it) 1992-01-08 1992-01-08 Perfezionamento della camera di combustione particolarmente nei forni a convenzione forzata per la cottura di vivande

Publications (2)

Publication Number Publication Date
EP0551807A1 EP0551807A1 (fr) 1993-07-21
EP0551807B1 true EP0551807B1 (fr) 1995-07-05

Family

ID=11418946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930100035 Expired - Lifetime EP0551807B1 (fr) 1992-01-08 1993-01-04 Four de cuisson d'aliments à convection forcée.

Country Status (3)

Country Link
EP (1) EP0551807B1 (fr)
DE (1) DE69300224T2 (fr)
IT (1) IT229213Y1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4418683C2 (de) * 1994-05-28 2002-05-29 Kueppersbusch Ag I K Heißumluftgerät mit zugeordneter Brennkammer
DE9416203U1 (de) 1994-10-07 1994-12-01 Grandi Angelo Cucine Spa Hitzeschutzschild für Wärmetauscher
DE10220624A1 (de) * 2002-05-08 2003-11-20 Lainox Ali Spa Vittorio Veneto Gemischter Backofen mit hoher Leistung zum Backen mit Konvektion und/oder Dämpfen
DE10220625A1 (de) * 2002-05-08 2003-11-20 Lainox Ali Spa Vittorio Veneto Gas-Backofen mit Konvektion mit hoher Leistung, insbesondere für die Zubereitung von Speisen
DE202004020230U1 (de) * 2004-12-31 2006-05-11 Wss Gmbh Wärmetauscher
DE102018122050A1 (de) * 2018-09-10 2020-03-12 Rational Ag Einsatz, Abgasverteiler, Wärmetauschereinrichtung und Gargerät

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1220754B (it) * 1988-06-01 1990-06-21 Zanussi Grandi Impianti Spa Forno di cottura a gas a convezione forzata
IT1237454B (it) * 1989-09-01 1993-06-05 Zanussi Grandi Impianti Spa Forno di cottura.

Also Published As

Publication number Publication date
ITTV920002U1 (it) 1993-07-08
ITTV920002V0 (it) 1992-01-08
IT229213Y1 (it) 1998-07-02
DE69300224T2 (de) 1996-04-04
EP0551807A1 (fr) 1993-07-21
DE69300224D1 (de) 1995-08-10

Similar Documents

Publication Publication Date Title
US3783854A (en) Flow-through self-cleaning gas oven with heat exchanger
CA1291384C (fr) Systeme de circulation de l'air pour cuisiniere a tirage descendant
EP0344743B1 (fr) Cuisinière à gaz à circulation d'air
US3624742A (en) Self-cleaning gas oven with heat exchanger
CA2195055C (fr) Foyer convertible a ventilation directe double
US5402713A (en) Gas fired deep fat fryer
US4493308A (en) Radiant/conductive broiler
USRE29602E (en) Domestic oven
EP0469043B1 (fr) Chauffe-eau
US3682156A (en) Gas oven
EP0551807B1 (fr) Four de cuisson d'aliments à convection forcée.
US20030127088A1 (en) Liquid heating cooker
US4185612A (en) Heat circulating fireplace
US4256082A (en) Warm air furnace
EP0197212B1 (fr) Bouclier antiradiation, four et méthode pour protéger une section de four à convection
US2133184A (en) Combination coal-wood electric range
GB2039029A (en) A gas oven with two oven compartments
US5778871A (en) Deep fat fryer with burner tube end weld temperature protection
US3470354A (en) Catalytic smoke eliminator for high temperature self-cleaning ovens
US4917075A (en) Arrangement for cooking by gas combustion
CA2125759C (fr) Chicane de repartition des gaz pour accouplement
US3659646A (en) Heat exchanger construction
CA1171332A (fr) Appareil chauffant
JPH0112681Y2 (fr)
KR100415289B1 (ko) 그릴

Legal Events

Date Code Title Description
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

Kind code of ref document: A1

Designated state(s): CH DE FR GB LI SE

17P Request for examination filed

Effective date: 19930629

17Q First examination report despatched

Effective date: 19940415

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB LI SE

REF Corresponds to:

Ref document number: 69300224

Country of ref document: DE

Date of ref document: 19950810

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19951005

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20060125

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20060130

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20060313

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20060427

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070801

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: LAINOX S.R.L.

Free format text: LAINOX S.R.L.#VIA SCHIAPARELLI, 15, Z.I.VEGLIA#VITTORIO VENETO (TV) (IT) -TRANSFER TO- LAINOX S.R.L.#VIA SCHIAPARELLI, 15, Z.I.VEGLIA#VITTORIO VENETO (TV) (IT)

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070104

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070131