EP0003764B1 - Four de cuisson double, en particulier four de cuisson encastré - Google Patents

Four de cuisson double, en particulier four de cuisson encastré Download PDF

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Publication number
EP0003764B1
EP0003764B1 EP79100334A EP79100334A EP0003764B1 EP 0003764 B1 EP0003764 B1 EP 0003764B1 EP 79100334 A EP79100334 A EP 79100334A EP 79100334 A EP79100334 A EP 79100334A EP 0003764 B1 EP0003764 B1 EP 0003764B1
Authority
EP
European Patent Office
Prior art keywords
baking oven
housing
double
oven
further characterized
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
Application number
EP79100334A
Other languages
German (de)
English (en)
Other versions
EP0003764A1 (fr
Inventor
Julius Dipl.-Ing. Husslein
Johann Klement
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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
Priority claimed from DE19782806158 external-priority patent/DE2806158C2/de
Priority claimed from DE19782825461 external-priority patent/DE2825461A1/de
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP0003764A1 publication Critical patent/EP0003764A1/fr
Application granted granted Critical
Publication of EP0003764B1 publication Critical patent/EP0003764B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/647—Aspects related to microwave heating combined with other heating techniques
    • H05B6/6482—Aspects related to microwave heating combined with other heating techniques combined with radiant heating, e.g. infrared heating
    • 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
    • F24C15/006—Arrangements for circulation of cooling air

Definitions

  • the invention relates to a double oven according to the preamble of claim 1.
  • the present invention is based on the object of designing a double oven in accordance with the preamble of patent claim 1 in such a way that, in particular in view of the limited thermal load capacity of electrical or electronic components, strong heat development in the upper housing area is avoided.
  • the air duct channels open above the upper screen plate into an air duct space delimited by the upper oven on the one hand and by the housing on the other hand.
  • the cooling air flowing in on the underside of the device thus flows around the upper oven and the control and regulating devices arranged above this oven at a relatively low temperature and is discharged directly via the blower and exhaust duct.
  • an exhaust duct connected to the cooking chamber of the upper oven opens into the exhaust duct.
  • the main air flow caused by the blower exerts a suction effect on the exhaust air coming from the cooking space, which favors the removal of this exhaust air.
  • a further advantageous embodiment of the invention is given in that in the lower housing area the side and rear walls form a frame to which the lower oven is attached and which has slide rails in the upper area on which the microwave oven is a complete unit in the frame can be inserted and fastened by means of preferably adjustable fastening means.
  • the fastening means being adjustable so that the front surfaces of the two ovens can be exactly aligned.
  • the fan associated with the microwave generator is located with its suction side in the immediate vicinity of a cooling air inlet opening in the housing. In this way it is prevented that this blower sucks in the heated air flowing around the two ovens or it is ensured that this blower can take its cooling air directly from the outside.
  • a horizontal ventilation bar is arranged on the upper baking oven, which is connected to a largely closed warm air outlet duct with part, preferably over two thirds of its length, and forms the cooling air inlet opening with its remaining length.
  • the thermally highly stressed or heat-sensitive electrical and electronic components are placed in the cooling air flow path between the suction side of the blower assigned to the microwave generator and preferably arranged on the housing rear wall and housing side wall.
  • the blower associated with the microwave generator is additionally used for the intensive cooling of particularly stressed or particularly sensitive components, the cooling of which would not be as intensive due to the general warm air flow rising in the housing.
  • the double oven shown in the figures is e.g. Built-in built-in furniture made of wooden panels, which consists of side panels 1 and 2, a cover panel 3 and a base panel 4 and forms an installation space for the double oven.
  • a lower oven 11 is installed, which has a front door 12 with glass front panel 13 and handle 14 and conventional heating elements, e.g. has a grill heater 15, and top and bottom heat, and above it an upper oven 16, which is designed as a microwave oven and a cooking chamber 17 and a microwave generator, microwave guide and microwave antenna, e.g.
  • the microwave oven 16 has its own ventilation system with a blower 24, an air duct 25 in which the magnetron or cooling surfaces are located, with injection openings 26, with outlet openings 27 in the rear wall of the muffle, and with an L-shaped one attached to the rear wall of the muffle Exhaust duct 28 rectangular cross-section. Both ovens are framed with thermal insulation layers e.g. 29.
  • the lower oven 11 is attached to the rear wall 8 and to the side walls 6, 7 by means of oven holders 30 and oven support 31 attached to the rear wall 8, which are attached to the side walls 6, 7.
  • oven holders 30 and oven support 31 attached to the rear wall 8, which are attached to the side walls 6, 7.
  • horizontal slide rails 32 on which the microwave oven as a complete unit in the upper installation space of the Housing or frame can be inserted and locked by means of bearing brackets 33.
  • the bearing brackets 33 e.g. by means of an elongated hole guide, adjustably attached to the oven 16 and the bearing brackets 33 are also similarly opposite or with the associated slide rails 32, e.g. by means of screws, adjustable and connectable.
  • the two ovens belonging, generally designated 34, electrical or electronic control, regulating and operating devices are accommodated.
  • a blow-out duct 35 which is only open on two opposite sides is fastened, one open side of which opens into front-side, upwardly directed outlet openings 36 and in the other open side the blow-out side of one also fastened to the lid 10 Blower 37 opens.
  • the blow-out duct 35 has a further opening 38 which, when the cover is placed on the fully equipped housing, is flush with the free end of the exhaust duct 28 of the microwave oven 16 and is connected therewith.
  • the outer structure of the double oven also consists of a front-side, all-round and over the boundary plates of the built-in furniture Lisene 39 made of profile material, which has 40 cooling air inlet openings 41 on the lowest pilast crossbar and the already mentioned outlet openings 36 on the pilast crossbar.
  • the cooling air sucked in at the inlet openings 41 thus enters the cooling air channels 45, 44, 43 bypassing the lower oven 11, rises as a result of natural convection and as a result of the suction of the fan 37, flows through the ventilation space 48 and the control and regulating devices 34 and is guided from the suction side of the fan 37 into the blow-out duct 35 and from there into the open.
  • the forced flow exerts a suction effect on the exhaust duct 28, which favors the removal of the exhaust air coming from the cooking space of the oven 16.
  • the double oven shown in FIGS. 4 to 6 is installed in a built-in piece of furniture, not shown, for example made of wooden plates, which can consist of side plates, a cover plate and a base plate and forms an installation space for the double oven.
  • the outer boundary of the double oven inserted into the installation space of the built-in furniture is formed by a housing 101, by opposite side walls 102 and 103, by a rear wall 104, by a base 105 and by a cover 106.
  • a lower oven 107 is installed, which can have a folding door on the front with glass front plate 109 and handle 110 as well as conventional heating elements, e.g.
  • a horizontal cooling air shaft 116 runs between the lower screen base 115 and the housing base 105, which opens into cooling air inlet openings 117 of a lower ventilation strip 118.
  • the upper housing area with the upper oven 111 is shown as a detail in FIG. 6.
  • a switch panel 119 placed above the upper oven 111 on the front of the housing and assigned to both ovens is shown shifted upward.
  • the switch panel 119 which has a time switch 120 and controls 121, is limited at the top by a ventilation strip 122 which has a warm air outlet opening which in the exemplary embodiment extends over two thirds of the strip length and which has a cooling air inlet opening 124 which extends approximately over extends a third of the length of the last.
  • Connected to the warm air outlet opening 123 is a largely closed warm air outlet duct 125, into which the blower side of a crossflow fan 126 and an exhaust duct 127 connected to the interior of the oven 111 open on the side opposite the ventilation strip.
  • a microwave generator with transformer 129 is arranged within the ventilation space in the uppermost housing area, which is delimited by the upper limit of the oven 11 at the bottom and by the housing cover 106, and which is arranged in the flow path of a cooling air shaft 130, which cooling air shaft 130 on the one hand the blow side of a special fan 131 is connected and on the other hand opens into the cooking space of the upper oven 111.
  • the blower 131 is placed in such a way that its suction side is immediately behind the cooling air inlet opening 124 of the ventilation strip 122, so that the blower 131 can suck in cooling air directly from the outside, as indicated by arrows. This flow of cooling air flows through the cooling air shaft 130 and thereby intensively cools the microwave generator 128.
  • the warm or hot exhaust air from the interior of the oven is conducted via the exhaust air shaft 127 into the exhaust duct 125 and together with the air flowing around and into the two ovens the upper housing area by natural convection and by suction (fan 126) warm air flowing in through the outlet opening 123 to the outside.
  • FIG. 6 shows that the suction side of the fan 131 is arranged off-center in the ventilation space in the vicinity of the housing side wall 102, as are electrical or electronic components or components which are thermally highly stressed or are very heat-sensitive.
  • the latter side wall 102 has significantly more cooling air inlet openings 132 compared to the opposite side wall 103, which are arranged in addition to the lower inlet openings 133 arranged in both side walls in the vicinity of the uppermost boundary of the side wall 102.
  • Such inlet openings can additionally be provided in the rear wall 104 of the housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)
  • Baking, Grill, Roasting (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)

Claims (12)

1. Four double, plus particulièrement four encastrable, du type comportant deux fours (11, 16) superposés et entourés d'une enveloppe commune, l'un des fours (16) étant un four à micro-ondes, ainsi que des dispositifs de communication, de régulation et de commande (34) pour les deux fours (11, 16), et des canaux d'air de refroidissement (43, 44, 45) prévus à l'intérieur de l'enveloppe et pourvus d'ouvertures d'admission (41) dans la face inférieure du four et d'ouvertures d'évacuation (43) dans la face supérieure du four, caractérisé par le fait que le four inférieur (11) est protégé thermiquement par rapport au four supérieur (16) et par rapport aux canaux d'air de refroidissement (43, 44, 45) à l'aide de plaques-écrans (9, 42) et par le fait que les ouvertures d'admission (41) de l'air de refroidissement sont situées en-dessous de la plaque-écran (9) qui limite vers le bas le four inférieur (11).
2. Four double selon la revendication 1, caractérisé par le fait que les plaques-écrans (9, 42) sont en liaison avec les parois postérieure et latérale (6, 7, 8) de l'enveloppe, qui forment, jusqu'à la hauteur de la plaque-écran supérieure (42), les canaux d'air de refroidissement (43, 44, 45).
3. Four double selon la revendication 2, caractérisé par le fait que les canaux de guidage de l'air débouchent au-dessus de la plaque-écran supérieure (42) dans une chambre d'aération limitée d'une part par le four supérieur (16) et d'autre part par l'enveloppe.
4. Four double selon la revendication 3, caractérisé par le fait que dans la partie supérieure de la chambre d'aération (48) est disposé le ventilateur (37) par son côté aspiration, alors que son côté refoulement débouche dans le canal fermé d'évacuation de l'air (35), menant de préférence vers le côté frontal de l'appareil.
5. Four double selon la revendication 4, caractérisé par le fait que dans le canal d'évacuation de l'air (35) débouche une cheminée d'air d'évacuation, qui est en liaison avec la chambre de cuisson (17) du four supérieur (16).
6. Four double selon une ou plusieurs des revendications précédentes, caractérisé par le fait que dans la partie inférieure de l'enveloppe les parois latérales et postérieure (6, 7, 8) forment un cadre auquel est fixé le four inférieur (11) et qui possède, dans la partie supérieure, des rails (32) sur lesquels peut être inséré dans le cadre et sous la forme d'une unité complète, le four à micro-ondes (16), ce dernier pouvant y être fixé, de préférence de façon réglable, à l'aide de moyens de fixation.
7. Four double selon la revendication 6, caractérisé par le fait que le cadre est disposé de telle manière dans un meuble encastrable qu'entre les parois latérales et les parois postérieures (6, 7, 8) d'une part et les faces intérieures du meuble encastrable ou une paroi de chambre (5) d'autre part, subsistent des canaux d'air de refroidissement dégagés.
8. Four double selon la revendication 6, caractérisé par le fait que sur le cadre est susceptible d'être monté un couvercle (10) auquel est fixé le canal d'évacuation supérieur (35) ainsi que le ventilateur (37) qui y est associé.
9. Four double selon une ou plusieurs des revendications précédentes, du type dans lequel on prévoit dans la chambre supérieure de l'enveloppe des dispositifs de commutation et de régulation, un générateur de micro-ondes (128) à ventilateur propre ainsi qu'un ventilateur (131) en liaison avec les canaux d'air de refroidissement qui entourent les fours, caractérisé par le fait que le ventilateur (131) est situé dans l'enveloppe (101) avec son côté aspiration dans le voisinage immédiat d'une ouverture d'admission d'air de refroidissement (124).
10. Four double selon la revendication 9, caractérisé par le fait qu'il est prévu sur le côté frontal de l'enveloppe, au-dessus du tableau d'interrupteurs (119) du four supérieur (101), une réglette d'aération horizontale (122) qui est reliée sur une partie de sa longueur, de préférence sur les deux tiers de sa longueur, à un canal d'évacuation de l'air tiède (25), largement fermé, alors que le restant de la longueur de ladite réglette constitue l'ouverture d'admission (124) de l'air de refroidissement.
11. Four double selon la revendication 9 et/ou 10, caractérisé par le fait que dans la trajectoire de l'écoulement de l'air de refroidissement, entre le côté aspiration du ventilateur (131) associé au générateur de micro-ondes (128) et de préférence les ouvertures d'admission d'air de refroidissement (132,133) disposées de préférence au niveau de la paroi postérieure de l'enveloppe (104) et de la paroi latérale de l'enveloppe (102, 103), sont disposés les éléments qui subissent une forte charge thermique ou les éléments électriques et électroniques qui sont sensibles à la chaleur.
12. Four double selon l'une ou plusieurs des revendications 9 à 11, caractérisé par le fait que le côté aspiration du ventilateur (131) associé au générateur de micro-ondes, ainsi que les éléments qui sont fortement chargés du point de vue thermique où les éléments sensibles à la chaleur sont disposés en position excentrée dans la chambre d'aération qui se situe au-dessus du four supérieur (111), près de la paroi latérale (102) de l'enveloppe, qui présente davantage d'ouvertures d'admission d'air de refroidissement (132) que la paroi latérale opposée (103).
EP79100334A 1978-02-14 1979-02-05 Four de cuisson double, en particulier four de cuisson encastré Expired EP0003764B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19782806158 DE2806158C2 (de) 1978-02-14 1978-02-14 Doppelbackofen
DE2806158 1978-02-14
DE2825461 1978-06-09
DE19782825461 DE2825461A1 (de) 1978-06-09 1978-06-09 Doppelbackofen, insbesondere einbaubackofen

Publications (2)

Publication Number Publication Date
EP0003764A1 EP0003764A1 (fr) 1979-09-05
EP0003764B1 true EP0003764B1 (fr) 1981-10-07

Family

ID=25773826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79100334A Expired EP0003764B1 (fr) 1978-02-14 1979-02-05 Four de cuisson double, en particulier four de cuisson encastré

Country Status (10)

Country Link
EP (1) EP0003764B1 (fr)
AT (1) AT363408B (fr)
DK (1) DK39779A (fr)
ES (1) ES477478A1 (fr)
FI (1) FI61348C (fr)
GR (1) GR72818B (fr)
HU (1) HU177957B (fr)
NO (1) NO147282C (fr)
PL (1) PL121237B1 (fr)
YU (1) YU40735B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108167883A (zh) * 2017-12-19 2018-06-15 广东美的厨房电器制造有限公司 加热烹饪器具

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8402757D0 (en) * 1984-02-02 1984-03-07 Microwave Ovens Ltd Oven systems
IT209172Z2 (it) * 1985-11-28 1988-09-16 Zanussi Elettrodomestici Forno a microonde da incasso.
KR0140461B1 (ko) * 1994-07-12 1998-06-01 김광호 전자렌지
US20120152224A1 (en) * 2010-12-15 2012-06-21 General Electric Company Venting system for cooking appliance
CN114631547B (zh) * 2022-04-19 2022-09-13 广州回味源蛋类食品有限公司 一种隧道式烤炉及咸蛋黄月饼的烘烤方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2158881A (en) * 1935-05-07 1939-05-16 Edison General Elec Appliance Range
US2883978A (en) * 1954-05-19 1959-04-28 Preway Inc Bake and broil unit
US3150655A (en) * 1962-09-11 1964-09-29 Caloric Corp Ventilated stove
FR1466866A (fr) * 1966-02-02 1967-01-20 Atlas Werke Appareil pour chauffer des produits non métalliques, notamment des produits alimentaires, au moyen d'énergie à micro-ondes
US3430023A (en) * 1967-09-11 1969-02-25 Roper Corp Geo D Door construction and ventilating system for microwave oven
DE2615604C3 (de) * 1976-04-09 1979-02-01 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Backofen, insbesondere mit Mitteln zur pyrolytischen Reinigung mit einem Kühlluftgebläse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108167883A (zh) * 2017-12-19 2018-06-15 广东美的厨房电器制造有限公司 加热烹饪器具

Also Published As

Publication number Publication date
FI61348C (fi) 1982-07-12
FI61348B (fi) 1982-03-31
NO147282B (no) 1982-11-29
DK39779A (da) 1979-08-15
PL212965A1 (pl) 1979-09-24
NO147282C (no) 1983-03-09
HU177957B (en) 1982-02-28
NO790244L (no) 1979-08-15
ATA77279A (de) 1981-01-15
FI790399A (fi) 1979-08-15
YU40735B (en) 1986-04-30
AT363408B (de) 1981-08-10
YU31879A (en) 1983-01-21
ES477478A1 (es) 1980-06-16
PL121237B1 (en) 1982-04-30
GR72818B (fr) 1983-12-06
EP0003764A1 (fr) 1979-09-05

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