WO2013021369A2 - Microwave oven - Google Patents
Microwave oven Download PDFInfo
- Publication number
- WO2013021369A2 WO2013021369A2 PCT/IB2012/057283 IB2012057283W WO2013021369A2 WO 2013021369 A2 WO2013021369 A2 WO 2013021369A2 IB 2012057283 W IB2012057283 W IB 2012057283W WO 2013021369 A2 WO2013021369 A2 WO 2013021369A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- microwave oven
- chamber
- radiator
- magnetron
- power output
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 abstract description 19
- 230000005855 radiation Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 description 19
- 238000012546 transfer Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000009827 uniform distribution Methods 0.000 description 5
- 230000005672 electromagnetic field Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000005465 channeling Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- H05B6/72—Radiators or antennas
Definitions
- the present invention relates to electric heaters which employ microwave radiation energy and may be preferably practiced for a heat treatment of foodstuffs.
- a device to supply microwave energy which is generated by a magnetron into a microwave oven chamber which device comprises a shortened pyramidal horn antenna connected through a communication opening in a wall of a processing chamber which has a rectangular shape.
- uch devices are used in substantially all of the microwave oven models commercially available from Samsung Electronics, LG, and a number of other companies).
- the main disadvantages of such a device include a nonuniform distribution of microwave field energy within the chamber cavity; the dependence of said distribution and oven operation efficiency on the volume, weight, and position in the chamber of a product processed this resulting in a nonuniform heating and a poor cooking of meals as well as in an increase in electricity consumption.
- the coefficient of uniformity of heating sources distribution ⁇ is between 38 % and 40 % if no rotation and 64 % if a product processed is rotated on a dielectric platform (measured as specified in [7]).
- the efficiency of power transfer from the magnetron to the processing chamber is reduced by (18 ⁇ 20) % due to both ohmic and reactive losses in a multilink transfer circuit.
- the most similar to the microwave oven in accordance with the present invention are a microwave oven having a diagonal excitation of a circularly polarized electromagnetic field in the processing chamber [2] and a process installation which includes a resonance chamber for heating provided with a device to supply a magnetron power into a processing chamber through a reentrant rectangular resonator.
- the power output of the magnetron is submerged into this resonator and an exiting stripline antenna of the resonance chamber for heating is connected using a coaxial to waveguide adapter [3].
- the stripline antenna which excites the circularly polarized electromagnetic field in the processing chamber and forms a uniform distribution of microwave heating sources ( ⁇ >90%) in the equivalent load is the principal element [2, 3].
- a two-element stripline antenna is composed of a radiator which has the shape of a “compressed figure eight” and is made of a high-conductivity metal sheet and a quasi-ellipsoidal screen also made of a high-conductivity metal sheet and secured rigidly physically through an opening at the center while providing a galvanic contact at an outer conductor of a coaxial length of a coaxial to waveguide adapter (CWA) each of the branches of the “figure-eight” radiator being connected, to ensure an in-phase feeding, physically and galvanically to the screen in characteristic points by means of bushes of a high-conductivity metal and the center of symmetry of the “figure eight” being connected to the center conductor of a coaxial length of CWA to the waveguide input of which energy from a microwave generator, magnetron, is applied.
- CWA coaxial to waveguide adapter
- the main disadvantages of the above devices include noticeable ohmic and reactive losses (10 to 12 %) of microwave energy in a multilink power transfer circuit from the magnetron to the microwave oven chamber; the complexity of matching individually the impedance of the stripline antenna impedance with that of the heating chamber (the resonator with a load) this resulting in an increase in efforts when designing microwave ovens with various dimensions of heating chambers; a low processability level of the stripline antenna design this being a material aspect when putting an article into production.
- the device disclosed in [3] is used as an electromagnetic field exciter in resonance chambers for heating of process installations.
- a microwave oven comprising: a chamber, a magnetron disposed outside the chamber whose power output is connected to a stripline antenna which is disposed inside the chamber and includes a radiator and a screen.
- the radiator of the stripline antenna having an opening in which a metal sleeve is installed with the magnetron power output being located therein, the magnetron power output being located within the chamber.
- microwave oven means both household and commercial microwave ovens which utilize microwave heating energy.
- the radiator is connected physically and electrically to the screen by means of a set of metal bushes with the aid whereof the stripline antenna is also tuned with the resonance processing chamber of the microwave oven.
- tuning results in matching the stripline antenna input with the magnetron power output, matching the antenna impedance with the heating chamber impedance, this in turn making it possible to achieve a substantial reduction in energy losses during energy channeling from the magnetron to the heating chamber as well as a highly uniform distribution of microwave heating sources in a load of the chamber.
- At least a part of the wall of the microwave oven chamber constitutes the screen. This simplifies the device design and makes it cheaper.
- the design in accordance with the present invention is characterized by a high processability at significantly lower manufacturing costs.
- the microwave oven in accordance with the present invention is characterized by that the metal sleeve with the magnetron power output being located therein is installed in the opening of the radiator of the stripline antenna in an undetachable manner.
- this connection may be made by welding.
- the radiator of the stripline antenna is made in the form of a quasi-ellipsoidal disk of ⁇ long and ⁇ /2 wide where ⁇ is the free space wavelength.
- the diameter of the opening of the radiator of the stripline antenna is equal to that of the magnetron power output, the diameter of the magnetron power output being equal to the inner diameter of the metal sleeve in which said output is disposed.
- Fig. 1 is a schematic of a microwave oven in accordance with the present invention
- Fig. 2 is a cross sectional view of a magnetron and a stripline antenna installed within the microwave oven chamber of Fig. 1;
- Fig. 3 is a general view of a radiator of the stripline antenna of Fig. 2.
- Fig. 1 is a schematic of a microwave oven which shows an oven housing 1 formed by walls, an oven processing chamber 2, a door 3, and opening 4 in the wall of the microwave oven chamber.
- Fig. 2 is a cross sectional view of a magnetron and a stripline antenna installed within the chamber of the microwave oven showing a magnetron 5, a magnetron flange 6, the stripline antenna which consists of a radiator 7 and a screen 8 which comprises at least a part of the wall of the microwave oven chamber. Also, this figure shows metal bushes 9, screws 10 which connect the radiator 7 to the metal bushes 9, a metal sleeve 11, a ceramic enclosure 12.
- Fig. 3 is a general view of radiator 7 of the stripline antenna of the microwave oven in accordance with the present invention.
- the radiator 7 has an opening 13 formed therein for the installation of the metal sleeve 11 as well as openings 14, 15, 16 formed therein for connecting the radiator 7 and the metal bushes 9 to the chamber sidewall with screws 10.
- the design of the microwave oven in accordance with the present invention is characterized by the standard set of basic components, namely: the oven housing 1 formed by the walls, the oven processing chamber 2, the door 3, and the controls (not shown) which are assembled in a conventional sequence and may be selected from the set of commercially available structural components.
- the features of the device in accordance with the present invention in assembling are as follows. Three matching elements comprising the metal bushes 9 made of a high-conductivity metal are installed physically which ensuring a galvanic contact at the inner surface of the chamber 2 sidewall and are fixed with the screws 10. The magnetron 5 is then installed, the power output whereof being placed into the cavity of the oven processing chamber of the microwave oven through the opening 4 in the microwave oven wall. Thereafter, the radiator 7 is mounted: the radiator 7 is fastened to the metal bushes 9 through the respective opening 14, 15, 16 with the screws 10 and the metal sleeve 11 which has a collet connector (not shown in Fig. 2) is connected to the ceramic enclosure 12 of the magnetron power output 5. The metal sleeve 11 is disposed in the opening 13 of the radiator 7 and is secured thereto in an undetachable manner.
- the assemblies and elements of the microwave oven in accordance with the present invention have a relatively simple design; their manufacture is widely established and does not require complex manufacturing equipment.
- the optimal dimensions of the metal bushes 9 (diameter of 10 mm, length of 26 mm) as well as the location coordinates of the openings 14, 15, 16 of their connection to the radiator 7, respectively, a point 14 (-30, 12), a point 15 (40, 15), a point 16 (36, -22) (Fig. 3).
- the two-element stripline antenna with the quasi-ellipsoidal radiator in the form of the thin disk 7 of ⁇ long, ⁇ /2 wide, and 1 mm thick was matched, in the free space radiation mode, to the voltage standing wave ratio (VSWR) of the input of 1.2 within a frequency band of between 2.4 GHz and 2.5 GHz and to VSWR of the input of 1.52 when installed within the chamber cavity of the microwave oven with the equipment cartridge load in accordance with [7].
- VSWR voltage standing wave ratio
- the coordinates of the antenna phase center coincide with those of the center of symmetry of the top wall surface of the processing chamber 2 of the microwave oven in accordance with the present invention.
- the position of the radiator 7 in which the angle between its principal axis of symmetry and the horizontal axis of symmetry of the processing chamber 2 sidewall is ⁇ 6° corresponds to the optimal mode of operation of the device.
- the coefficient of uniformity of microwave heating sources distribution ⁇ 94% was determined as well as the losses of microwave energy during its transfer from the magnetron to the microwave oven chamber were measured which losses were 4%.
- a microwave oven which, thanks to its optimal configuration conditional upon the set of structural components and their interconnection to each other, makes it possible to ensure an increase in the efficiency of microwave energy transfer from the magnetron of the microwave oven to the processing chamber where heating occurs; the achievement of a highly uniform distribution of microwave field energy within the processing chamber cavity of the microwave oven; and the achievement of such a design processability level that meets the requirements for the organization of full-scale production as well as has the prospects of commercial applications.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Constitution Of High-Frequency Heating (AREA)
Abstract
The present invention relates to electric heaters which employ microwave radiation energy and may be preferably practiced for a heat treatment of foodstuffs. There has developed a microwave oven comprising: a chamber, a magnetron disposed outside the chamber whose power output is connected to a stripline antenna which is disposed inside the chamber and includes a radiator and a screen, the radiator of the stripline antenna having an opening in which a metal sleeve is installed with the magnetron power output being located therein, the magnetron power output being located within the chamber.
Description
The present invention relates to electric heaters
which employ microwave radiation energy and may be preferably practiced for a
heat treatment of foodstuffs.
Known in the art is a device to supply microwave
energy which is generated by a magnetron into a microwave oven chamber which
device comprises a shortened pyramidal horn antenna connected through a
communication opening in a wall of a processing chamber which has a rectangular
shape. (Such devices are used in substantially all of the microwave oven models
commercially available from Samsung Electronics, LG, and a number of other
companies).
The main disadvantages of such a device include a
nonuniform distribution of microwave field energy within the chamber cavity;
the dependence of said distribution and oven operation efficiency on the
volume, weight, and position in the chamber of a product processed this
resulting in a nonuniform heating and a poor cooking of meals as well as in an
increase in electricity consumption.
The coefficient of uniformity of heating sources
distribution α is between 38 % and 40 % if no rotation and 64 % if a product
processed is rotated on a dielectric platform (measured as specified in [7]).
The efficiency of power transfer from the magnetron to the processing chamber
is reduced by (18÷20) % due to both ohmic and reactive losses in a multilink
transfer circuit.
The most similar to the microwave oven in accordance
with the present invention are a microwave oven having a diagonal excitation of
a circularly polarized electromagnetic field in the processing chamber [2] and
a process installation which includes a resonance chamber for heating provided
with a device to supply a magnetron power into a processing chamber through a
reentrant rectangular resonator. The power output of the magnetron is submerged
into this resonator and an exiting stripline antenna of the resonance chamber
for heating is connected using a coaxial to waveguide adapter [3]. In the above
devices, the stripline antenna which excites the circularly polarized
electromagnetic field in the processing chamber and forms a uniform
distribution of microwave heating sources (α>90%) in the equivalent load is
the principal element [2, 3].
In the device disclosed in [2] which device is a
microwave oven, a two-element stripline antenna is composed of a radiator which
has the shape of a “compressed figure eight” and is made of a high-conductivity
metal sheet and a quasi-ellipsoidal screen also made of a high-conductivity
metal sheet and secured rigidly physically through an opening at the center
while providing a galvanic contact at an outer conductor of a coaxial length of
a coaxial to waveguide adapter (CWA) each of the branches of the “figure-eight”
radiator being connected, to ensure an in-phase feeding, physically and
galvanically to the screen in characteristic points by means of bushes of a
high-conductivity metal and the center of symmetry of the “figure eight” being
connected to the center conductor of a coaxial length of CWA to the waveguide
input of which energy from a microwave generator, magnetron, is applied.
The main disadvantages of the above devices include
noticeable ohmic and reactive losses (10 to 12 %) of microwave energy in a
multilink power transfer circuit from the magnetron to the microwave oven
chamber; the complexity of matching individually the impedance of the stripline
antenna impedance with that of the heating chamber (the resonator with a load)
this resulting in an increase in efforts when designing microwave ovens with
various dimensions of heating chambers; a low processability level of the
stripline antenna design this being a material aspect when putting an article
into production.
The device disclosed in [3] is used as an
electromagnetic field exciter in resonance chambers for heating of process
installations.
The main disadvantages of this device are the same as
those of the device disclosed in [2] the ohmic and reactive losses of microwave
energy in a multilink power transfer circuit from the magnetron to the
processing chamber do not exceed, however, 8%.
Such material losses of microwave energy during its
transfer from the magnetron to the microwave oven chamber, an insufficient
processability level of the electromagnetic field excitation structures within
the processing chamber cavity prevent stripline antennas from being widely used
in both household and commercial devices which utilize microwave heating
Accordingly, it is the object of the present
invention to provide a microwave oven which, due to its more optimal
configuration conditional upon a set of structural components and their
interconnection to each other, will make it possible to ensure: an increase in
the efficiency of microwave energy transfer from a magnetron to a processing
chamber of the microwave oven where heating occurs; the achievement of a highly
uniform distribution of microwave field energy within the processing chamber
cavity; and the achievement of such a design processability level that meets
the requirements for the organization of full-scale production.
The object of the invention is achieved with a
microwave oven comprising: a chamber, a magnetron disposed outside the chamber
whose power output is connected to a stripline antenna which is disposed inside
the chamber and includes a radiator and a screen. the radiator of the stripline
antenna having an opening in which a metal sleeve is installed with the
magnetron power output being located therein, the magnetron power output being
located within the chamber. Owing to the above described configuration of the
invention claimed, a direct coupling between the magnetron power output and the
stripline antenna radiator and the arrangement of the magnetron power output
within the processing chamber of the microwave oven are provided directly this
reducing significantly losses of energy during energy channeling from the
magnetron to the processing chamber of the microwave oven.
As used herein, the term “microwave oven” means
both household and commercial microwave ovens which utilize microwave heating
energy.
In accordance with a preferred embodiment of the
present invention, the radiator is connected physically and electrically to the
screen by means of a set of metal bushes with the aid whereof the stripline
antenna is also tuned with the resonance processing chamber of the microwave
oven. Such tuning results in matching the stripline antenna input with the
magnetron power output, matching the antenna impedance with the heating chamber
impedance, this in turn making it possible to achieve a substantial reduction
in energy losses during energy channeling from the magnetron to the heating
chamber as well as a highly uniform distribution of microwave heating sources
in a load of the chamber.
In accordance with another preferred embodiment of
the present invention, at least a part of the wall of the microwave oven
chamber constitutes the screen. This simplifies the device design and makes it
cheaper.
Thanks to the above described embodiment of the
present invention and thanks to the variant selected of the installation of the
stripline antenna in which the coordinates of its phase center coincide with
the center of symmetry of the side wall of the chamber of the microwave oven, a
highly uniform distribution of heating sources with α ≈ 94% is achieved.
The design in accordance with the present
invention is characterized by a high processability at significantly lower
manufacturing costs.
The microwave oven in accordance with the present
invention is characterized by that the metal sleeve with the magnetron power
output being located therein is installed in the opening of the radiator of the
stripline antenna in an undetachable manner. In particular, this connection may
be made by welding.
In accordance with the most preferred embodiment
of the present invention, the radiator of the stripline antenna is made in the
form of a quasi-ellipsoidal disk of λ long and λ/2 wide where λ is the free
space wavelength. These are the optimal shape and dimensions of a two-element
antenna fed in-phase.
In accordance with yet another preferred
embodiment of the present invention, the diameter of the opening of the
radiator of the stripline antenna is equal to that of the magnetron power
output, the diameter of the magnetron power output being equal to the inner
diameter of the metal sleeve in which said output is disposed.
Fig. 1 is a schematic of a microwave oven in
accordance with the present invention;
Fig. 2 is a cross sectional view of a magnetron and
a stripline antenna installed within the microwave oven chamber of Fig. 1;
Fig. 3 is a general view of a radiator of the
stripline antenna of Fig. 2.
Fig. 1 is a schematic of a microwave oven which
shows an oven housing 1 formed by walls, an oven processing chamber 2, a door
3, and opening 4 in the wall of the microwave oven chamber.
Fig. 2 is a cross sectional view of a magnetron and
a stripline antenna installed within the chamber of the microwave oven showing
a magnetron 5, a magnetron flange 6, the stripline antenna which consists of a
radiator 7 and a screen 8 which comprises at least a part of the wall of the
microwave oven chamber. Also, this figure shows metal bushes 9, screws 10 which
connect the radiator 7 to the metal bushes 9, a metal sleeve 11, a ceramic
enclosure 12.
Fig. 3 is a general view of radiator 7 of the
stripline antenna of the microwave oven in accordance with the present
invention. The radiator 7 has an opening 13 formed therein for the installation
of the metal sleeve 11 as well as openings 14, 15, 16 formed therein for
connecting the radiator 7 and the metal bushes 9 to the chamber sidewall with
screws 10.
Detailed Description of the Preferred Embodiment
The design of the microwave oven in accordance with
the present invention is characterized by the standard set of basic components,
namely: the oven housing 1 formed by the walls, the oven processing chamber 2,
the door 3, and the controls (not shown) which are assembled in a conventional
sequence and may be selected from the set of commercially available structural
components.
The features of the device in accordance with the
present invention in assembling are as follows. Three matching elements
comprising the metal bushes 9 made of a high-conductivity metal are installed
physically which ensuring a galvanic contact at the inner surface of the
chamber 2 sidewall and are fixed with the screws 10. The magnetron 5 is then
installed, the power output whereof being placed into the cavity of the oven
processing chamber of the microwave oven through the opening 4 in the microwave
oven wall. Thereafter, the radiator 7 is mounted: the radiator 7 is fastened to
the metal bushes 9 through the respective opening 14, 15, 16 with the screws 10
and the metal sleeve 11 which has a collet connector (not shown in Fig. 2) is
connected to the ceramic enclosure 12 of the magnetron power output 5. The
metal sleeve 11 is disposed in the opening 13 of the radiator 7 and is secured
thereto in an undetachable manner.
The assemblies and elements of the microwave oven in
accordance with the present invention have a relatively simple design; their
manufacture is widely established and does not require complex manufacturing
equipment.
The most optimal parameters of the structural
components of the microwave oven in accordance with the present invention which
ensure the achievement of the objects of the present invention have been
determined experimentally.
The optimal dimensions of the metal bushes 9
(diameter of 10 mm, length of 26 mm) as well as the location coordinates of the
openings 14, 15, 16 of their connection to the radiator 7, respectively, a
point 14 (-30, 12), a point 15 (40, 15), a point 16 (36, -22) (Fig. 3). The
two-element stripline antenna with the quasi-ellipsoidal radiator in the form
of the thin disk 7 of λ long, λ/2 wide, and 1 mm thick was matched, in the free
space radiation mode, to the voltage standing wave ratio (VSWR) of the input of
1.2 within a frequency band of between 2.4 GHz and 2.5 GHz and to VSWR of the
input of 1.52 when installed within the chamber cavity of the microwave oven
with the equipment cartridge load in accordance with [7].
The coordinates of the antenna phase center coincide
with those of the center of symmetry of the top wall surface of the processing
chamber 2 of the microwave oven in accordance with the present invention. The
position of the radiator 7 in which the angle between its principal axis of
symmetry and the horizontal axis of symmetry of the processing chamber 2
sidewall is ±6° corresponds to the optimal mode of operation of the device.
In accordance with [7], the coefficient of
uniformity of microwave heating sources distribution α = 94% was determined as
well as the losses of microwave energy during its transfer from the magnetron
to the microwave oven chamber were measured which losses were 4%.
It has been confirmed experimentally that, without a
stripline antenna, the full transfer of magnetron energy to the microwave oven
chamber is possible with the coefficient α being, however, approx. 72%;
nevertheless, the property described widens the sphere of applications of the
microwave oven in accordance with the present invention.
Thus, there is proposed a microwave oven which,
thanks to its optimal configuration conditional upon the set of structural
components and their interconnection to each other, makes it possible to ensure
an increase in the efficiency of microwave energy transfer from the magnetron
of the microwave oven to the processing chamber where heating occurs; the
achievement of a highly uniform distribution of microwave field energy within
the processing chamber cavity of the microwave oven; and the achievement of
such a design processability level that meets the requirements for the
organization of full-scale production as well as has the prospects of
commercial applications.
Claims (6)
1. A microwave oven comprising: a chamber, a magnetron
disposed outside the chamber whose power output is connected to a stripline
antenna which is disposed inside the chamber and includes a radiator and a
screen, wherein the radiator of the stripline antenna has an opening in which a
metal sleeve is installed with the magnetron power output being located
therein, the magnetron power output being located within the
chamber.
2. The microwave oven as claimed in claim 1, wherein the
radiator is connected physically and electrically to the screen by means of
metal bushes.
3. The microwave oven as claimed in claims 1 and 2, wherein
at least a part of the wall of the microwave oven chamber constitutes the
screen.
4. The microwave oven as claimed in claim 1, wherein the
metal sleeve with the magnetron power output being located therein is installed
in the opening of the radiator of the stripline antenna in an undetachable
manner.
5. The microwave oven as claimed in claim 1, wherein the
radiator of the stripline antenna is made in the form of a quasi-ellipsoidal
disk of λ long and λ/2 wide where λ is the free space wavelength.
6. The microwave oven as claimed in claim 1, wherein the
diameter of the opening of the radiator of the stripline antenna is equal to
that of the magnetron power output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2012/057283 WO2013021369A2 (en) | 2012-12-13 | 2012-12-13 | Microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2012/057283 WO2013021369A2 (en) | 2012-12-13 | 2012-12-13 | Microwave oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2013021369A2 true WO2013021369A2 (en) | 2013-02-14 |
| WO2013021369A3 WO2013021369A3 (en) | 2013-12-27 |
Family
ID=47669028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2012/057283 WO2013021369A2 (en) | 2012-12-13 | 2012-12-13 | Microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2013021369A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017035604A1 (en) * | 2015-09-03 | 2017-03-09 | Commonwealth Scientific And Industrial Research Organisation | Microwave heating apparatus and method of heating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1083772A1 (en) * | 1999-09-10 | 2001-03-14 | Brandt Cooking | Microwave oven antenna |
| RU2327305C2 (en) * | 2005-09-26 | 2008-06-20 | Zhilkov Valerij Stepanovich | Device for circularly polarised field excitement in microwave oven chamber |
| US20100126987A1 (en) * | 2008-11-25 | 2010-05-27 | Zhylkov Valerie S | Device for transfer of microwave energy into a defined volume |
| RU2393650C2 (en) * | 2008-09-22 | 2010-06-27 | Валерий Степанович Жилков | Microwave oven |
-
2012
- 2012-12-13 WO PCT/IB2012/057283 patent/WO2013021369A2/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1083772A1 (en) * | 1999-09-10 | 2001-03-14 | Brandt Cooking | Microwave oven antenna |
| RU2327305C2 (en) * | 2005-09-26 | 2008-06-20 | Zhilkov Valerij Stepanovich | Device for circularly polarised field excitement in microwave oven chamber |
| RU2393650C2 (en) * | 2008-09-22 | 2010-06-27 | Валерий Степанович Жилков | Microwave oven |
| US20100126987A1 (en) * | 2008-11-25 | 2010-05-27 | Zhylkov Valerie S | Device for transfer of microwave energy into a defined volume |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017035604A1 (en) * | 2015-09-03 | 2017-03-09 | Commonwealth Scientific And Industrial Research Organisation | Microwave heating apparatus and method of heating |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013021369A3 (en) | 2013-12-27 |
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