EP2842387A1 - A compact microwave oven - Google Patents
A compact microwave ovenInfo
- Publication number
- EP2842387A1 EP2842387A1 EP13727505.3A EP13727505A EP2842387A1 EP 2842387 A1 EP2842387 A1 EP 2842387A1 EP 13727505 A EP13727505 A EP 13727505A EP 2842387 A1 EP2842387 A1 EP 2842387A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cavity
- microwave oven
- compact microwave
- compact
- door
- 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.)
- Withdrawn
Links
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
- H05B6/74—Mode transformers or mode stirrers
- H05B6/745—Rotatable stirrers
Definitions
- This invention concerns a compact microwave oven for selectively heating of meals. More particularly, it concerns a microwave oven provided with a cavity, enclosed by walls wherein a dish with food, such as for catering services, can be inserted and wherein the space between the dish and the walls is substantially limited. Furthermore, the device enables selectively heating a part of the dish.
- the microwave oven comprises a warm and cold compartment and means to manage efficiently the microwaves in the hot compartment in respect with the food compounds.
- Heating food by microwave technology in a microwave oven is well-known.
- An important problem with microwave ovens is an inefficient use of energy.
- First, the energy in the cavity of the oven is not sufficiently used and secondly, the composition and the characteristics of the food are not taken in account.
- a few solutions have been proposed in order to solve this problem.
- Another solution proposes dynamic means, like in US5828042, concerning a device for heating food homogenously by using a rotating plate with apertures and provided with a weight and microwave sensor, to adapt the amount of energy.
- Both devices use a cavity with a volume that is a multitude of the volume of the food. When vertically stacking multiple of these microwave ovens, a lot of space will be lost.
- the apertures for distributing the microwave energy have a regular fixed pattern. So, both devices are targeted to heat the food homogenously, but not to heat some of the food compounds selectively. However, it is known to heat meals selectively with a warm and cold compartment, like described in EP2037784. It describes U-shaped profiles that separate a warm and cold compartment. This invention is a further improvement of the device for selectively heating foodstuff with an efficient energy usage.
- This invention offers a solution for the previously mentioned problems by providing a microwave oven with a closed cavity and wherein the space, between the 6 wall panels of said cavity and the food dish, is substantially limited.
- the device, according to the invention is further provided with a stirrer with a horizontal
- the cavity that houses the rotating stirrer can be limited consequently in height.
- the stirrer scatters the microwaves homogenously in the cavity.
- the combination of the limited space in the cavity for the dish, the horizontal rotating stirrer and irregular adapted openings enable the adaptable heating of foodstuffs. Moreover, this combination
- warm and cold compartments are provided- in the cavity, resulting in a partly heating of the meal and another part that will not be heated. Both compartments are separated by an electromagnetic filter for only passage of microwaves in the warm compartment.
- Still another embodiment according to this invention provides a coupling between at least two microwave ovens and whereby the power between both microwave ovens is managed by an electronic device. Stacking a multitude of microwave ovens just takes a limited space.
- Figure 1 sectional view of a microwave oven with a warm and cold compartment
- Figure 2 side view of an electromagnetic filter for mounting in a cavity of a microwave oven
- Figure 3 side view of an electromagnetic filter for mounting in a cavity of a microwave oven
- Figure 4 front view of a door in a microwave oven with electromagnetic filter
- Figure 5 irregular openings in a wall panel of the cavity of the microwave oven
- Figure (6c) side view of wing with irregular pattern
- Figure ⁇ 6d side view of wing with irregular pattern
- Figure (6e) side view of wing with irregular pattern
- a microwave oven comprises a cavity for inserting a meal, an instrument panel with a timer, a magnetron and a power source.
- the instrument panel and the power source are not illustrated in the drawings.
- the compact microwave oven(l) comprises a cavity (2), enclosed by a bottom panel (3), a ceiling panel (4), two side panels (5a, 5b) , a back panel (6) and a front door (7) .
- the size of the cavity (2) is respectively, 55cm, 44.2cm and 9cm, according to a preferred embodiment of this invention.
- a distribution space (8) (along the X, Y and Z axis, the size of the distribution cavity (8) is respectively,
- the cavity (2) is divided in a warm (2a) compartment (dimensions along the X, Y and Z axis are 34.5cm, 44,2cm and 9cm) and cold (2b)
- compartment dimensions along the X, Y and Z axis are 15,7cm, 44,2cm and 9cm. Both compartments (2a, 2b ⁇ are separated by an electromagnetic filter (12), enabling only microwaves in the warm compartment (2a) over the food.
- Figures 2 and 3 illustrate two different electromagnetic filters (12).
- the filter (12) is made of a metal sheet with a vertical upstanding plate (12a), provided on its bottom with a beam-shaped body(12b).
- the upstanding plate (12a) is attached to the ceiling panel (4).
- Another upstanding plate (12c), adjacent to the door (7) is located
- the beam-shaped body (12b) is provided with recesses ( 12d) .
- Figure 3 shows an another embodiment of a filter (12), with an upstanding plate (12a), another upstanding
- the upstanding plate (12c) joins the ceiling panel (4) and on its front end, the upstanding plate (12c), adjacent to the door (7) and on its rear end the back panel (6) of
- Figure 4 illustrated a door (7), provided with a
- a filter (13) encloses the periphery of the door, located on the cold compartment.
- a second filter (13b) is located around the periphery of the door at the warm compartment. Both filters (13a, 13b) are separated by a filter (13c) on the door(7).
- a service tray will be inserted under the filter (12) on the bottom panel (3) .
- the part of the serving tray with food that needs to be heated will be situated in the warm compartment (2a) under the irregular openings (11) in the ceiling panel(4).
- the position of the magnetron antennae (9) (the center of the magnetron antennae is located 32.8mm from the backwall in the center of the distribution cavity) , the composition of the meal and the dielectric properties of the different food compounds, the pattern of the filter (12) in the cavity(2) and the filter(13) of the door(7), the position and the configuration of the stirrer (10).
- Microwaves are generated by the magnetron antennae (9) in the distribution space (8) above the cavity (2).
- a horizontal rotating stirrer (10) is provided in the warm compartment (2a) .
- Such a stirrer (10) is illustrated in figure 6a.
- the horizontal rotating stirrer (10) comprises a number of wings (lOal, 10a2, 10a3 and 10a4), longitudinally provided on the axle (10b).
- the wings are situated in two perpendicular planes around the axle (10b).
- 4 wings with an adapted pattern are provided around said axle (10b) .
- the wings are composed of a wide and narrow part, extending along the axle (10b).
- the stirrer is powered by a motor, which is not shown on the drawings.
- the pattern of said stirrer (10) will be adapted regarding the
- Such a stirrer (10) with a horizontal rotating axle (10b) enables to limit the height of the warm cavity size.
- the dimensions for the wings are:
- Xa is 112.14mm
- Xb is 226.28mm
- Xc is 340. 2mm
- Ya is 13.42mm
- Yb is 15.70mm
- Yc is 18 .84mm
- Xa is 112.14mm
- Xb is 226.28mm
- Xc is 340.42mm
- Ya is 11.06mm
- Yb is 11.19mm
- Yc is 18 .33mm
- Xa is 112.14mm
- Xb is 226.28mm
- Xc is 340.42mm
- Ya is 19.11mm
- Yb is 25.15mm
- Yc is 13 .68mm
- Xa is 112.14mm
- Xb is 226.28mm
- Xc is 340.42mm
- Ya is 15.30mm
- Yb is 13.48mm
- This invention in particular, concerns a combination of a microwave oven with a compact cavity (2) and wherein the generated microwaves are distributed on the food in the cavity (2) to heat selectively.
- Another embodiment concerns the coupling of at least 2 compact microwave ovens.
- the coupling comprises a
- a microprocessor manages the microwave energy in the different microwave ovens in relation to the requested energy level and usage.
- the power is determined, based on a number of criteria, such as the food contents and the preferred heating time.
- An electronic control device checks the uniform distribution of the microwave energy over the different microwave ovens. This embodiment limits the maximal power generation.
- the coupling of multiple microwave ovens enables the heating of different
- foodstuffs or meals need to be heated rapidly at the same time .
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Constitution Of High-Frequency Heating (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2012/0275A BE1020504A3 (en) | 2012-04-26 | 2012-04-26 | COMPACT MICROWAVES. |
PCT/BE2013/000021 WO2013159158A1 (en) | 2012-04-26 | 2013-04-25 | A compact microwave oven |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2842387A1 true EP2842387A1 (en) | 2015-03-04 |
Family
ID=48577450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13727505.3A Withdrawn EP2842387A1 (en) | 2012-04-26 | 2013-04-25 | A compact microwave oven |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2842387A1 (en) |
BE (1) | BE1020504A3 (en) |
WO (1) | WO2013159158A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4409453A (en) * | 1976-05-19 | 1983-10-11 | Smith Donald P | Combined microwave and impingement heating apparatus |
US4354083A (en) * | 1980-11-05 | 1982-10-12 | General Electric Company | Microwave oven with novel energy distribution arrangement |
KR100234735B1 (en) | 1996-07-11 | 2000-01-15 | 구자홍 | Heating method and apparatus of microwave oven |
KR100565656B1 (en) * | 2004-02-19 | 2006-03-29 | 엘지전자 주식회사 | microwave oven range |
BE1017196A3 (en) | 2006-06-26 | 2008-04-01 | Halm Bvba | DEVICE AND METHOD FOR THE COMMON HEATING OF PREPARED MEALS. |
EP2520133B1 (en) * | 2009-12-30 | 2016-06-29 | Arçelik Anonim Sirketi | An oven |
-
2012
- 2012-04-26 BE BE2012/0275A patent/BE1020504A3/en active
-
2013
- 2013-04-25 EP EP13727505.3A patent/EP2842387A1/en not_active Withdrawn
- 2013-04-25 WO PCT/BE2013/000021 patent/WO2013159158A1/en active Application Filing
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2013159158A1 * |
Also Published As
Publication number | Publication date |
---|---|
BE1020504A3 (en) | 2013-11-05 |
WO2013159158A1 (en) | 2013-10-31 |
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Legal Events
Date | Code | Title | Description |
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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 |
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17P | Request for examination filed |
Effective date: 20141010 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
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DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20150806 |
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GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
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INTG | Intention to grant announced |
Effective date: 20171012 |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: VERHELST, MARLEEN Inventor name: CLEMENTE FERNANDEZ, FRANCISCO JAVIER Inventor name: PEDRENO MOLINA, JUAN LUIS Inventor name: MONZO CABRERA, JUAN |
|
INTG | Intention to grant announced |
Effective date: 20171012 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20180223 |