EP1643808A2 - Four destiné au traitement culinaire des aliments - Google Patents

Four destiné au traitement culinaire des aliments Download PDF

Info

Publication number
EP1643808A2
EP1643808A2 EP05108934A EP05108934A EP1643808A2 EP 1643808 A2 EP1643808 A2 EP 1643808A2 EP 05108934 A EP05108934 A EP 05108934A EP 05108934 A EP05108934 A EP 05108934A EP 1643808 A2 EP1643808 A2 EP 1643808A2
Authority
EP
European Patent Office
Prior art keywords
housing
air
oven according
cooling air
switch room
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
EP05108934A
Other languages
German (de)
English (en)
Other versions
EP1643808B1 (fr
EP1643808A3 (fr
Inventor
Christian Bichlmeier
Klaus Dengler
Roland Frank
Martin Thaler
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1643808A2 publication Critical patent/EP1643808A2/fr
Publication of EP1643808A3 publication Critical patent/EP1643808A3/fr
Application granted granted Critical
Publication of EP1643808B1 publication Critical patent/EP1643808B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05B6/642—Cooling of the microwave components and related air circulation systems
    • 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
    • H05B6/6402—Aspects relating to the microwave cavity

Definitions

  • the invention relates to a furnace for cooking treatment of food by means of thermal energy and / or microwave energy, with a thermal energy absorbing or thermally sensitive components receiving, ventilation limited switch room, which is force-ventilated by means of forced cooling air to dissipate the heat in the switch room.
  • ovens for cooking treatment of foods, ovens or stoves it is common to accommodate the electrical or electronic components in a lying above the furnace muffle switch room and to cool this room, for example, with a so-called cross-flow fan.
  • a separate fan for example, a radial fan is provided for cooling the high frequency generator (magnetron).
  • inverter power supply is essentially only used either in pure microwave ovens or microwave ovens with conventional thermal heating with relatively low heat output, so that the thermal load on the environment of the treatment room, in particular the switch room in the heat-sensitive and / or electronic components and additional thermal energy dissipating devices, such as a magnetron of the microwave device is relatively low.
  • the present invention is based on the object in a furnace of the type mentioned in the best possible operating temperature in the thermally highly stressed or particularly heat-sensitive components containing switch room to obtain even when all operating modes, even if only a very limited space is available for the accommodation of these components.
  • the measure according to the invention is particularly for extremely thermally stressed, d. H. heat-emitting and / or extremely heat-sensitive components or components / units such as an inverter power supply of the microwave device created a kind of shelter within the housing, in which cooling air streams can be selectively fed by means of air guide elements and demand to be cooled points. Due to the limited space within the housing and thus the short flow paths for the cooling air is achieved so that a direct "blowing" of these components, combined with an increased vortex formation, d. H. a turbulent flow of the object-related cooling air flows and thus an optimal cooling or heat dissipation effect.
  • the housing is designed in the manner of a flow channel and is fluidly connected on the one hand to the outside air and on the other hand to the suction side of the at least one cooling air blower.
  • the housing it will be advantageous to arrange the housing with its suction side at the rear boundary of the furnace, on which furnace side, according to experience, the outside air from the furnace is the least heated.
  • the housing has a plurality of air outlet openings, which are at least partially facing the suction side of the at least one cooling air blower.
  • an air outlet opening can be assigned to a separate cooling-air fan for the magnetron of the microwave device, while a further outlet opening, for example in the form of a group of holes, can face the suction side of a cooling-air fan, which cooling-air fan in shape a cross-flow fan generally heat dissipation from the switch room is used.
  • the plurality of air outlet openings may be arranged such that, for example, mutually perpendicular exhaust air streams are formed, supported by appropriate placement of the air guide elements.
  • the housing is provided with adjustable feet and secured with air clearance on its support.
  • the housing itself is surrounded by a communicating with the outside air cushion, which provides heat dissipation to at least the lower outside of the housing.
  • the top floor of the oven shown in Figure 1 forms a switch room 1, which is surrounded on both sides by dashed lines shown side walls 2 and back by a dashed lines shown back wall 3 and upwards by a cover plate 4 and possibly also by a likewise not shown upper intermediate plate.
  • housed in this switch room 1 are electrical or electronic components for the control and regulation of so-called conventional heating elements such as a top heat / grill, a bottom heat below a likewise not shown oven muffle, which is placed directly below the switch room 1.
  • the oven should therefore be equipped with all conceivable heating elements for conventional oven operation including recirculation mode and self-cleaning mode, in which temperatures up to almost 500 degrees C occur inside or Ofenmuffel.
  • Basis of this switch room 1 is a base plate 5.
  • a microwave device is further arranged in the switch room 1 with a magnetron 6, with a Radial fan 7, on the pressure side of which a magnetron 6 leading duct 8 is arranged, and with an inverter power supply of the microwave device, which is arranged within a housing 9 explained with reference to Figures 2 and 3.
  • the magnetron 6 flowing around, now heated cooling air passes into a arranged in the front side 10 of the furnace exhaust duct 11 and from here into the open. This exhaust air flow is illustrated by arrows 12.
  • a cooling air blower 13 which is designed as a cross-flow fan and other components or component groups that are commonly used in such ovens or stoves.
  • the centrifugal fan 7 is connected with its suction side directly to the end face 14 of the housing 9, while the cooling air blower 13 is located on a longitudinal side 15 of the housing 9.
  • the housing 9 itself is arranged directly on the back of the furnace and thus also of the switch room 1 such that its air inlet openings 16, 17, 18 are connected to the oven rear side directly to the outside air.
  • 3 corresponding air inlet openings are provided, for example in the form of a hole group in the rear wall.
  • the housing 9 has a plurality of air outlet openings, for example 19, which communicate with the suction side of the radial fan 7 and an air outlet opening 20 in the form of a hole group, which faces the suction side of the cooling air blower 13.
  • the housing 9 consists of two composable and connectable molded parts 9a and 9b, wherein the molded part 9a represents the underside and the molded part 9b represents the upper side of the housing 9.
  • Figures 2 and 3 show the two mold parts 9a and 9b unfolded.
  • Each molded part 9a and 9b has behind the air inlet openings 16, 17, 18 bent and elongated air guide elements 21, 22, 23, which form a total of three substantially mutually parallel channel sections for the incoming from the outside in the direction of arrow 24 cooling air. Subsequent to these channel sections and air guide elements 21, 22 and 23 there are further air guide elements, for example 25 and 26, through which the cooling air introduced in the channel sections (arrows 24) is distributed in a swirling manner in the direction of the arrows 27, for example, in the direction of high thermal loads and therefore components of the microwave device to be cooled, for example, in the direction of a high-frequency coil 28, a heat sink 29 of the inverter power supply and in the direction of an only indicated board 30 also of the inverter power supply, which board 30 in the lower part of the housing 9 is arranged at a distance from the housing walls, so that the cooling air flow can sweep both sides of the circuit board.
  • cooling air flows through the air outlet openings 19 and 20 to the suction sides of the two cooling air blower 7, 13 and by the presence of the aforementioned air guide is obtained at least two substantially mutually perpendicular exhaust air flows in the direction of arrows 31 in the direction of the centrifugal fan 7 and in the direction of arrow 32 in the direction of the cooling-air fan 13, as illustrated in FIG.
  • the air outlet openings 20 in the form of hole groups are arranged in the upper part 9b of the housing 9, ie in the immediate vicinity of the suction side of the cooling air blower 13 and serve in particular for heat removal from the region of the power semiconductors and the high voltage transformer of the inverter power supply of the microwave device.
  • adjustable feet 33 are formed, with which the housing 9 with air clearance on the base plate 5 rests (see Figure 1 and 2). Due to this air gap 34 or gap can flow in the direction of arrow 35 cooling air and the underside of the housing 9, whereby the housing itself is forcibly cooled.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)
  • Constitution Of High-Frequency Heating (AREA)
EP05108934A 2004-10-01 2005-09-28 Four destiné au traitement culinaire des aliments Active EP1643808B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004047992A DE102004047992A1 (de) 2004-10-01 2004-10-01 Ofen zur Garbehandlung von Lebensmitteln

Publications (3)

Publication Number Publication Date
EP1643808A2 true EP1643808A2 (fr) 2006-04-05
EP1643808A3 EP1643808A3 (fr) 2008-02-20
EP1643808B1 EP1643808B1 (fr) 2012-01-18

Family

ID=35429262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05108934A Active EP1643808B1 (fr) 2004-10-01 2005-09-28 Four destiné au traitement culinaire des aliments

Country Status (3)

Country Link
EP (1) EP1643808B1 (fr)
AT (1) ATE542395T1 (fr)
DE (1) DE102004047992A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006051502B4 (de) 2006-10-31 2023-06-01 BSH Hausgeräte GmbH Ofen zur Garbehandlung von Lebensmitteln
DE102020215494A1 (de) 2020-12-08 2022-06-09 Wilhelm Bruckbauer Vorrichtung zum Erwärmen von Speisen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040149752A1 (en) 2002-12-20 2004-08-05 Matsushita Electric Industrial Co., Ltd. High frequency heating apparatus

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS556118A (en) * 1978-06-26 1980-01-17 Sharp Corp Control panel for microwave oven
US4539469A (en) * 1984-04-16 1985-09-03 Lincoln Manufacturing Company, Inc. Oven control circuitry cooling system for a double-stack food preparation oven arrangement
US5566377A (en) * 1995-07-10 1996-10-15 Lee; Richard Heat dissipating apparatus
TW322969U (en) * 1997-03-12 1997-12-11 xiu-hui Zheng Heat dissipation apparatus for notebook computer
US6011688A (en) * 1997-06-04 2000-01-04 Hewlett Packard Co. Compact apparatus for cooling a plurality of circuit packs arranged with a cage
US6280318B1 (en) * 2000-02-22 2001-08-28 International Game Technology Central forced air cooling of a gaming machine
TW484721U (en) * 2000-11-06 2002-04-21 Giga Byte Tech Co Ltd Improved airflow guiding structure of server
US6525936B2 (en) * 2001-04-30 2003-02-25 Hewlett-Packard Company Air jet cooling arrangement for electronic systems
US6462948B1 (en) * 2001-06-25 2002-10-08 Intel Corporation Thermal management system for a multiple processor computer appliance
US6400568B1 (en) * 2001-07-11 2002-06-04 Sun Microsystems, Inc. Method and apparatus for cooling electronic components
DE10134012B4 (de) * 2001-07-12 2005-03-17 Fujitsu Siemens Computers Gmbh Stromversorgungseinheit
US6464578B1 (en) * 2001-10-24 2002-10-15 Enlight Corporation Fan and hood arrangement

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040149752A1 (en) 2002-12-20 2004-08-05 Matsushita Electric Industrial Co., Ltd. High frequency heating apparatus

Also Published As

Publication number Publication date
ATE542395T1 (de) 2012-02-15
DE102004047992A1 (de) 2006-04-06
EP1643808B1 (fr) 2012-01-18
EP1643808A3 (fr) 2008-02-20

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