EP0003764A1 - Four de cuisson double, en particulier four de cuisson encastré - Google Patents

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

Info

Publication number
EP0003764A1
EP0003764A1 EP79100334A EP79100334A EP0003764A1 EP 0003764 A1 EP0003764 A1 EP 0003764A1 EP 79100334 A EP79100334 A EP 79100334A EP 79100334 A EP79100334 A EP 79100334A EP 0003764 A1 EP0003764 A1 EP 0003764A1
Authority
EP
European Patent Office
Prior art keywords
oven
housing
cooling air
double
blower
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.)
Granted
Application number
EP79100334A
Other languages
German (de)
English (en)
Other versions
EP0003764B1 (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, in particular built-in oven, with two baking ovens arranged one above the other and surrounded by a common housing, in particular a combination oven, in which one of the ovens is a microwave oven, with switching, control and operating devices accommodated in the upper housing space Both ovens, as well as with cooling air ducts provided in the interior of the housing with inlet and outlet openings.
  • DT-Gbm 70 27 952 In a known double oven (DT-Gbm 70 27 952), two ovens that can be heated by conventional heating devices are accommodated one above the other in a housing common to both ovens. Above the upper oven is a suction device, which sucks in the heated air rising from both ovens and discharges it to the outside.
  • a suction device Above the upper oven is a suction device, which sucks in the heated air rising from both ovens and discharges it to the outside.
  • the fact that the heat generated during operation of the ovens can rise freely in the common housing means that there is a risk of heat build-up in the upper housing area, which can impair the functioning of the switching and control devices which are also housed in the upper housing area.
  • the present invention is based on the object of designing a double oven of the type mentioned at the outset 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 lower oven is thermally shielded from the upper oven, preferably the microwave oven, and from the cooling air ducts provided between the housing or built-in furniture and the ovens by means of screen plates and that the cooling air inlet openings on the lower housing limit and below the lower oven and its screen plate and the outlet openings as well as a fan connected to a blow-out duct above the upper oven are arranged.
  • the special nature of the air flow in connection with the arrangement of the inlet and outlet openings ensures that the cooling air sung at the lower housing boundary can flow directly and with a relatively low temperature into the upper housing area with a bypass of the lower oven and with certainty one prevents undue heating of the control and regulating devices arranged in this upper housing area. This is particularly important when using electronic components where a bypass temperature of approx. 70 ° C should not be exceeded.
  • the air duct channels open above the top of the screen into a ventilation space delimited by the top oven, preferably a microwave oven, on the one hand, and by the appliance housing on the other.
  • the cooling air flowing in on the underside of the device flows very intensively around the upper oven and the control and regulating devices located above this oven at a relatively low temperature and is discharged directly via the blower and exhaust duct.
  • an exhaust duct which is 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 the in the lower housing area Side panels and rear walls forming shield plates are provided, to which the lower oven is fastened and which has slide rails in the upper region, on which the microwave oven can be inserted as a complete unit into the frame and fastened by means of preferably adjustable fastening means.
  • 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 fan sucks in the heated air flowing around the two ovens or it is ensured that this fan can take its cooling air directly from the outside.
  • a horizontal ventilation strip is arranged on the front of the housing above the switch panel of the upper oven, which is connected to a largely closed warm-air exhaust duct with part, preferably more than two-thirds of its length, and with its remaining length the cooling air inlet opening forms behind which the blower suction side is located.
  • cooling is arranged in the cooling air flow path between the suction side of the fan assigned to the microwave generator and preferably on the housing rear wall and housing side wall air inlet openings placed the thermally highly stressed or heat-sensitive electrical and electronic components.
  • 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 furniture made of wooden panels built in, 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.
  • the outer boundary of the double oven used in the installation space of the built-in furniture is formed by opposite side walls 6 and 7, by a rear wall 8, by a lower screen base 9 and by an upper cover 10 (FIG. 1).
  • a lower oven 11 is installed, which has a folding door 12 on the front with a glass front plate 13 and a handle 14 as well as conventional heating elements, e.g. has a grill radiator 15, as well as 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 conductor 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 thereof are located, with blowing openings 26, with blowing openings 27 in the rear wall of the muffle, and with an L attached to the rear wall of the muffle -shaped 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.
  • the bearing brackets 33 are set on the oven 16 in an adjustable manner, for example by elongated hole guidance, and the bearing brackets 33 are also similarly opposite or with the associated slide rails 32 , eg 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 of which the blow-out side also fastens 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, circumferential and over the boundary plates of the built-in furniture 39 Lisene made of profile material, the lowest Lisenenquerholm 40 cooling air inlet openings 41 and on the uppermost Lisenenquerholm the already mentioned outlet openings 36.
  • a closed screen bottom 9 forming the lower boundary of the double oven and immediately above this oven 11 another such screen bottom 42, e.g. made of sheet steel.
  • the outer housing explained, that is to say the side and rear walls, are at such a distance from the inner surfaces of the built-in furniture that cooling ducts 43, 44 and 45 are formed all around the housing, which are in communication with one another, but through the shielding bases, the rear and side walls are separated from the lower oven 11 and largely thermally decoupled. Only above the upper screen floor 42 are openings 46 or recesses 47 in the rear wall 8 and in the side walls 6, 7, which allow the cooling air to enter the installation space or ventilation space 48 for the upper oven 16.
  • 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 discharged from the suction side of the blower 37 into the blow-out duct 35 and from there into the open. This is due to the constraint. current exerted on the exhaust duct 28 a suction effect, which favors the removal of the exhaust air coming from 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 in the installation space of the built-in furniture is formed by a housing 101, formed 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 which has a front flap door Glass front plate 109 and handle 110 as well as conventional heating elements; For example, can have a grill radiator and top and bottom heat, and above an upper oven 111, which is designed as a microwave oven and also has a folding door 112 with handle 113.
  • a horizontal cooling air shaft 116 runs between the lower screen base 115 and the housing base 105 and 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 11 on the front of the housing and assigned to both ovens is shown displaced upwards.
  • the switch panel 119 having a time switch 120 and operating elements 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 extends over a third of the last length.
  • 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 cooling air flow flows through the cooling air shaft 130 and thereby intensively cools the microwave generator 128. As also shown by arrows, the warm or hot exhaust air from the interior of the oven is passed via the exhaust air shaft 127 into the exhaust duct 125 and is together with the air flowing around the two ovens and in the upper housing area by natural convection and by suction (fan 126) warm air flowing in through the outlet opening 123.
  • the suction side of the fan 131 is arranged off-center in the ventilation space near the housing side wall 102
  • the latter side wall 102 compared to the opposite side wall 103, has significantly more cooling air inlet openings 132, which are arranged in addition to the ones in both side walls, as well as thermally highly stressed or very heat-sensitive electrical or electronic components th lower inlet openings 133 near the top of the sides wall 102 are arranged.
  • cooling air inlet openings 132 which are arranged in addition to the ones in both side walls, as well as thermally highly stressed or very heat-sensitive electrical or electronic components th lower inlet openings 133 near the top of the sides wall 102 are arranged.
  • Such inlet openings can additionally be provided in the rear wall 104 of the housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Baking, Grill, Roasting (AREA)
  • Electric Ovens (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
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
DE19782825461 DE2825461A1 (de) 1978-06-09 1978-06-09 Doppelbackofen, insbesondere einbaubackofen
DE2825461 1978-06-09

Publications (2)

Publication Number Publication Date
EP0003764A1 true EP0003764A1 (fr) 1979-09-05
EP0003764B1 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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150983A2 (fr) * 1984-02-02 1985-08-07 Microwave Ovens Limited Agencement de four
EP0224775A1 (fr) * 1985-11-28 1987-06-10 INDUSTRIE ZANUSSI S.p.A. Four à micro-ondes encastrable
GB2291322A (en) * 1994-07-12 1996-01-17 Samsung Electronics Co Ltd Microwave oven
US20120152224A1 (en) * 2010-12-15 2012-06-21 General Electric Company Venting system for cooking appliance

Families Citing this family (2)

* 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
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

Citations (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
DE2615604A1 (de) * 1976-04-09 1977-10-20 Bosch Siemens Hausgeraete Backofen, insbesondere mit mitteln zur pyrolytischen reinigung

Patent Citations (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
DE2615604A1 (de) * 1976-04-09 1977-10-20 Bosch Siemens Hausgeraete Backofen, insbesondere mit mitteln zur pyrolytischen reinigung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150983A2 (fr) * 1984-02-02 1985-08-07 Microwave Ovens Limited Agencement de four
EP0150983A3 (en) * 1984-02-02 1987-05-06 Microwave Ovens Limited Oven systems
EP0224775A1 (fr) * 1985-11-28 1987-06-10 INDUSTRIE ZANUSSI S.p.A. Four à micro-ondes encastrable
GB2291322A (en) * 1994-07-12 1996-01-17 Samsung Electronics Co Ltd Microwave oven
US20120152224A1 (en) * 2010-12-15 2012-06-21 General Electric Company Venting system for cooking appliance

Also Published As

Publication number Publication date
ATA77279A (de) 1981-01-15
AT363408B (de) 1981-08-10
FI61348B (fi) 1982-03-31
DK39779A (da) 1979-08-15
PL121237B1 (en) 1982-04-30
YU40735B (en) 1986-04-30
NO790244L (no) 1979-08-15
ES477478A1 (es) 1980-06-16
GR72818B (fr) 1983-12-06
YU31879A (en) 1983-01-21
NO147282B (no) 1982-11-29
FI790399A (fi) 1979-08-15
PL212965A1 (pl) 1979-09-24
EP0003764B1 (fr) 1981-10-07
HU177957B (en) 1982-02-28
FI61348C (fi) 1982-07-12
NO147282C (no) 1983-03-09

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