CN109548219A - Laterally homogeneous field microwave oven - Google Patents
Laterally homogeneous field microwave oven Download PDFInfo
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- CN109548219A CN109548219A CN201811380175.4A CN201811380175A CN109548219A CN 109548219 A CN109548219 A CN 109548219A CN 201811380175 A CN201811380175 A CN 201811380175A CN 109548219 A CN109548219 A CN 109548219A
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- heating chamber
- microwave
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- radiating curtain
- turntable
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- 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
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- 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
- H05B6/70—Feed lines
- H05B6/707—Feed lines using waveguides
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Electric Ovens (AREA)
Abstract
The present invention uses one to two radiating curtain in the front, rear or top of the heating chamber of laterally uniform microwave oven as often as possible to motivate higher mode TEn0 mode, and (n is integer, more than or equal to 2), to form equally distributed standing wave in the heating chamber.At least one described radiating curtain includes at least two row radiators along Z axis.The radiating curtain passes through floor to the heating chamber microwave radiation energy.Radiator on any radiating curtain is all uniformly distributed in X direction and along Z-direction.The microwave radiated in all radiators on same radiating curtain is coherent wave.In order to further improve the uniformity of heating, we used can with transverse translation or can be around the rotating circular disk of the vertical axis precession of heating chamber.The present invention passes through the microwave mode in the cavity of the laterally uniform microwave oven of control to improve the uniformity of the heating of laterally uniform microwave oven in three dimensions.
Description
Technical field
The present invention relates to micro-wave ovens.In particular it relates to a kind of micro-wave oven for being evenly heated material using higher mode high efficiency.
Background technique
Microwave energy is substituted for various traditional heating modes.Micro-wave oven utilizes the various foods of Microwave Heating and material
Material, in microwave chemical field, microwave energy be used to accelerate various chemical reactions.Microwave energy is also used for nano material, artificial
The production of a variety of materials such as diamond.
During traditional heating, heat by conducting inside it, belonging to surface heating outside heating object, cause by
It is uneven to heat object internal and external temperature.In Microwave Heating, microwave is material-to-be-heated by electric field action, leads to wherein polar molecule
Damping vibration generate heat, belong to body heating.Therefore it is heated simultaneously inside and outside heating object.
But there is the whole homogeneity question of heating in conventional microwave oven.
In any confined space of heating chamber etc, electromagnetic wave by because covibration with the various intrinsic of the cavity
The form of mode of resonance exists.In wherein any one mode of resonance, electromagnetic wave all exists with standing wave form, leads to space
The amplitude of the electric field of a little fixed positions is maximum, and in addition the amplitude of certain fixed positions is zero.It is micro- in the typical case of 2450MHz
Wave energy applying frequency, these electric fields concentrate between distance be operational microwave used wavelength half or slightly larger, substantially exist
Between 61 ~ 100 millimeters, cause material-to-be-heated uneven on corresponding scale.
The size of common household microwave oven is 5 ~ 10 times bigger than above-mentioned scale.It can near the working frequency in these cavitys
With the mode of resonance number that motivates for several to dozens of.There's a widespread conviction that by people, is conducive to using the heating chamber that height spends mould
The uniformity of microwave heating.But any superposition of plurality of mode of resonance may be generated in certain positions of heating chamber
Electric field much larger than other positions is concentrated, and causes the extreme of microwave heating uneven.
In order to solve the homogeneity question of Microwave Heating, international and domestic technical staff has carried out unremitting effort.People
Attempt by increase operational microwave feedback mouth number, change feedback mouth-shaped, change the feedback mouth of operational microwave in heating chamber appearance
The position in face perhaps changes the polarization direction of the feedback mouth of operational microwave or changes above-mentioned several variables at random simultaneously, passes through meter
It calculates or the method for improving heating uniformity is found in actual measurement.But up to the present, add in micro-wave oven, especially large size micro-wave oven
The homogeneity question of heat is not well solved.
Let us understands we face in micro-wave oven heating uniformity technical problem.In the frequency of operational microwave
Rate, for a certain microwave present mouth, after selecting its position, shape, polarization direction, in heating chamber several to dozens of modes respectively by
The determination of the intensity of excitation be all computationally it is very difficult, it is in actual measurement and extremely complex.And large-scale microwave
It is needed in furnace using multiple magnetrons as microwave source, therefore the number of corresponding microwave feedback mouth is also multiple, microwave stove heating
The complexity of problem exceeds the imagination of people.
Summary of the invention
The present invention passes through the operating mode controlled in mould heating chamber, provides a kind of micro-wave oven of homogeneous heating.
To achieve the goals above, the technical solution adopted by the present invention are as follows:
A kind of laterally homogeneous field microwave oven, including heating chamber and at least one radiating curtain.At least one described radiation battle array
Column include at least two row radiators along Z axis.The radiating curtain passes through floor to the heating chamber microwave radiation energy.General
In logical micro-wave oven, magnetron is by waveguide and a coupling aperture to heating chamber radiation energy.The present invention is by using along Z-direction
Multirow radiator, in heating chamber microwave distribution more effectively controlled, improve the uniformity of heating.
Under normal circumstances, the shape of the heating chamber is cuboid.But the present invention can also use cylindrical body or other
The heating chamber of structure.
Can also include multiple row radiator in X direction: at least one described radiating curtain includes at least two column along X-axis
Radiator 1.The radiating curtain passes through floor to the heating chamber microwave radiation energy.
In order to allow microwave field the communication process being distributed in heating chamber in remain unchanged as far as possible, any radiating curtain
On radiator be all uniformly distributed in X direction and along Z-direction.Meanwhile the spoke in all radiators on same radiating curtain
The microwave penetrated is coherent wave.Belong to the microwave of all radiators radiation of same a line along X-axis arrangement on same radiating curtain
Amplitude it is identical and phase is identical.Along the two of the arbitrary neighborhood for belonging to same row of Z axis arrangement on same radiating curtain
The amplitude of the microwave of a radiator radiation is identical, opposite in phase.Above-mentioned arrangement, it is therefore an objective to motivated in heating chamber to heating chamber
Some higher mode for the waveguide defined by the cross section vertical with the direction of the heating chamber that certain interior direction is propagated, and its
Its mode is not motivated as far as possible.
In order to simplify structure, we can also set on same radiating curtain belong to along adjacent two of Z axis it is same
The amplitude of the microwave of the radiator radiation of column is identical, and phase is identical.
Further, we allow each radiator to be located at same by the mode and field distribution of microwave in each radiator of control
Belong to center line along Z axis one side of the microwave in each radiator of the radiator radiation of same a line on radiating curtain along X-axis arrangement
On the Z-direction component of electric field be zero.
A kind of preferable scheme, any radiator are rectangular waveguide or rectangular waveguide loudspeaker.The rectangular waveguide or
The mode of microwave is basic mode TE10 mode in rectangular waveguide loudspeaker.Certainly, microwave in the rectangular waveguide or rectangular waveguide loudspeaker
Mode may be higher mode TEn0 mode, wherein n be integer, be more than or equal to 2.List in rectangular waveguide or rectangular horn
One higher mode is more complicated than the excitation of single basic mode mostly.
It motivates and transmits for the ease of single basic mode, the length of the rectangular waveguide or rectangular waveguide loudspeaker radiation opening's edge Z axis
Spend the 3/5 ~ 9/10 of the wavelength that Lz is operational microwave free space.The rectangular waveguide or rectangular waveguide loudspeaker radiation opening's edge X-axis
Length Lx be less than operational microwave free space wavelength.Preferably design, the rectangular waveguide or rectangular waveguide loudspeaker radiation
The length Lx of opening's edge X-axis is less than the half of the wavelength of operational microwave free space.
A kind of design scheme, the number of the radiating curtain are 1.One radiating curtain is located at the laterally homogeneous field
Above the heating chamber of microwave oven, from the top down to the heating chamber microwave radiation energy.The Z-direction and the heating
The a line from back to front of chamber is parallel.
Another design scheme, the number of the radiating curtain are 1.It is micro- that the radiating curtain is located at the laterally homogeneous field
Behind the heating chamber of Wave heating furnace, it is located at from back to front to heating chamber microwave radiation energy or the radiating curtain
Before the heating chamber of the laterally homogeneous field microwave oven, from front to back to heating chamber microwave radiation energy.It is described
The a line from front to back of Z-direction and the heating chamber is parallel.
The third design scheme, the number of the radiating curtain are 2.One of radiating curtain is located at described laterally homogeneous
Behind the heating chamber of field microwave oven, from back to front to heating chamber microwave radiation energy, another radiating curtain position
Before the heating chamber of the laterally homogeneous field microwave oven, from front to back to heating chamber microwave radiation energy.Institute
The a line from front to back for stating Z-direction and the heating chamber is parallel.Compared with above two design scheme, the design scheme
It is slightly complicated.But the electric field pole of the microwave of our standing wave forms that two radiating curtains can be allowed to be formed in the heating chamber
It is mutually staggered in the heating chamber a little louder, to further improve the uniformity of microwave field in the heating chamber.Here two
The microwave source of radiating curtain can be relevant each other, can also derive from two mutual independent microwave sources.
The electric field maximal point of the electromagnetic field for the standing wave form that above-mentioned each scheme has motivated is being the period in the heating chamber
Property dot matrix distribution.It further include the turntable positioned at heating chamber bottom to further improve the uniformity of heating.The transverse direction is equal
When shimming microwave oven works, center axis rotation vertically of the turntable around the turntable.
In existing scheme, position of the axis of the turntable in the heater is fixed.On the axis
It is material-to-be-heated to be evenly heated by reaching around the center axis rotation of the turntable vertically for the turntable.
For this purpose, the present invention allows the central axis vertically of the turntable simultaneously in the middle front and back pendulum of the heating chamber (3)
It is dynamic.The amplitude of oscillation of the swing in the heating chamber of central axis vertically of the turntable is equal to operational microwave along front and back
The integral multiple of the distance between the adjacent electric field maximum point in direction.
In order to realize the turntable the swing in the heating chamber of central axis vertically function, this hair
Three schemes are devised in bright:
The first string is provided with cylindrical body on the axis of the vertical direction of the turntable, is arranged in the heating chamber bottom
There is the rectangular block for being fixed on the heating chamber bottom.The cylindrical body outer edge contacts on one side with the rectangular block.The circle
Cylinder outer edge along the rectangular block rolling on one side, to drive the turntable while rotation around own axes along the square
The translation on one side of shape block.Here the cylindrical body can directly be connect with the shaft of motor.The motor is with the cylindrical body
Mobile and its rotation direction is periodically reversed.Motor can also be fixed on the laterally homogeneous field microwave oven,
Torque is sent to the cylindrical body by soft rod or soft stick.
Another scheme is provided with cylindrical body A and rectangular block A in the heating chamber bottom.A side of the rectangular block A
Face contacts with the side of the cylindrical body A and contacts with the side of the cylindrical body.When the cylindrical body A is around the cylindrical body A
Axis rotation when, by driving the rectangular block A to translate along the side of the rectangular block A and driving the turntable to rotate and put down
It moves.Here the cylindrical body A can directly be connect with the shaft of motor.
The third scheme is provided with cylindrical body A and rectangular block A, rectangular block B and fixing axle in the heating chamber bottom.Institute
The axis that cylindrical body A is stated around the cylindrical body A rotates, and drives the rectangular block A to translate by the fixing axle and rectangular block B,
To drive the turntable to rotate and translate.Here the cylindrical body A can directly be connect with the shaft of motor.
We can also allow the center axis rotation vertically of the turntable while around the vertical of the heating chamber
The center line precession in direction.The central axis vertically of the turntable around the vertical direction of the heating chamber center line into
Dynamic diameter is equal to 1.414 times of the integer of operational microwave the distance between certain adjacent electric field maximum point along the longitudinal direction
Times.
In order to realize the turntable along the center axis rotation of its vertical direction while around the heating chamber Vertical Square
To center line precession, we are there are two scheme:
The first string is provided with cylindrical body on the axis of the vertical direction of the turntable, is arranged in the heating chamber bottom
There is the cylindrical body B for being fixed on the heating chamber bottom.The cylindrical body outer edge is contacted with the outer edge of the cylindrical body B.Institute
The outer edge for stating cylindrical body is rolled along the outer edge of the cylindrical body B, so that it is same to drive the turntable to rotate around own axes
When around the cylindrical body B axis precession.Here the cylindrical body can directly be connect with the shaft of motor.The motor with
The cylindrical body is circumferentially moved around the axis of the cylindrical body B.
Second scheme, is provided with cylindrical body on the axis of the vertical direction of the turntable, in the heating chamber bottom
It is provided with cylindrical body A and round-meshed fixed plate is opened in inside.The outer edge of the cylindrical body outside with the cylindrical body A respectively
The inside edge of the circular hole of edge and the fixed plate contacts.The cylindrical body A is rotated around the axis of the cylindrical body A, described in drive
While turntable is around the axis rotation of the turntable, the axis precession of the axis of the turntable around the cylindrical body A.Here institute
Stating cylindrical body A can directly connect with the shaft of motor.
The above-mentioned axis for allowing the turntable is mobile or each scheme of precession in, the edge and rectangle of the cylinder to contact with each other
The side of block is generally mutually twisted with dentalation realization and transmits torque.Under normal circumstances, all turntables in the present invention, circle
Cylinder, cylindrical body A, B, rectangular block, rectangular block A, B, fixing axle, fixed plate are all low-loss nonmetallic materials.
Laterally homogeneous field microwave oven of the invention can also increase separately charging in the front and back of its heating chamber
Mouth and discharge port and the conveyer belt through feed inlet, heating chamber and discharge port.It is material-to-be-heated to be sent by feed inlet by conveyer belt
It is taken out after entering into heating chamber heating from discharge port.It is material-to-be-heated in order to prevent to infect the laterally homogeneous field microwave oven
Other parts or component, in the heating chamber can using various low lossy microwaves partition carry out subregion.
In the present invention, we are using one to two radiating curtain in the heating chamber of laterally homogeneous field microwave oven
The higher mode of a certain waveguide has as often as possible been motivated, and has formed standing wave in the heating chamber.With it is micro- in traditional micro-wave oven
Wave source is compared by waveguide with multiple modes of resonance that coupling aperture motivates respective energy uncontrollable simultaneously in heating chamber, this hair
The field distribution of bright operating mode is determining and can be controlled.In order to further improve the uniformity of heating, I
Used can with anterior-posterior translation or can be around the rotating circular disk of the vertical axis precession of heating chamber.
The feeding network of radiating curtain of the invention can use for reference the feeding network of common aerial array, using waveguide,
Micro-strip or splitter with wire realize the distribution of power and the feed to each radiator.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.
Fig. 1 is the schematic diagram of the radiating curtain of embodiment 1.
Fig. 2 is the AA direction schematic diagram of Fig. 1.
Fig. 3 is the schematic diagram of the radiating curtain of embodiment 2.
Fig. 4 is the AA direction schematic diagram of Fig. 3.
Fig. 5 is the schematic diagram of embodiment 3.
Fig. 6 is the AA direction schematic diagram of Fig. 5.
Fig. 7 is the schematic diagram of embodiment 4.
Fig. 8 is the AA direction schematic diagram of Fig. 7.
Fig. 9 is the schematic diagram of embodiment 5.
Figure 10 is the AA direction schematic diagram of Fig. 9.
Figure 11 is the schematic diagram of embodiment 6.
Figure 12 is the AA direction schematic diagram of Figure 11.
Figure 13 is the schematic diagram of embodiment 7.
Figure 14 is the AA direction schematic diagram of Figure 13.
Figure 15 is the schematic diagram of embodiment 8.
Figure 16 is the AA direction schematic diagram of Figure 15.
Label and corresponding parts title in attached drawing: 1- radiator, the floor 2-, 3- heating chamber, 4- turntable, 5- cylinder
Body, 5A- cylindrical body A, 5B- cylindrical body B, 6- rectangular block, 6A- rectangular block A, 6B- rectangular block B, 6C- fixing axle, 7- fixed plate.
Arrow in each radiator radiation port or near radiation port indicates the power line direction of microwave.The front of heating chamber
Refer to that the slave paper of heating chamber is directed toward the direction of reader.The rear of heating chamber refers to the direction that paper is directed toward from reader of heating chamber.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail.Exemplary embodiment and its explanation of the invention for explaining only the invention, is not made
For limitation of the invention.
Embodiment 1
Such as Fig. 1 and 2.
One radiating curtain, including 4 rows along Z axis, the 8 column radiators 1 along X-axis.The radiating curtain passes through floor 2 to institute
State heating chamber microwave radiation energy.
Radiator 1 on the radiating curtain is all uniformly distributed in X direction and along Z-direction.Meanwhile being located at the radiating curtain
On all radiators 1 in the microwave that radiates be coherent wave.Belong to all of same a line along X-axis arrangement on the radiating curtain
The amplitude for the microwave that radiator 1 radiates is identical and phase is identical.Along any two that Z axis is adjacent on same radiating curtain
The amplitude for belonging to the microwave of the radiation of radiator 1 of same row is identical, opposite in phase.
The microwave that all radiators 1 on the radiating curtain radiate is in each radiator 1 along the center line on Z axis one side
Direction of an electric field is directed toward X-direction.
Any radiator 1 is rectangular waveguide.The operating mode of microwave is basic mode TE10 mode in the rectangular waveguide.
The length Lz of the rectangular waveguide opening's edge Z axis is the 3/5 ~ 9/10 of the wavelength of operational microwave free space.The square
The length Lx of shape waveguide opening's edge X-axis is less than the half of the wavelength of operational microwave free space.
Embodiment 2
As shown in Figures 3 and 4.
A kind of laterally homogeneous field microwave oven, including heating chamber 3 and a radiating curtain.The radiating curtain is along Z
4 rows of axis, along 8 column radiators 1 of X-axis.The radiating curtain is placed in the top of the heating chamber 3, by floor 2 on to
It is lower to 3 microwave radiation energy of heating chamber.Heating chamber 3 is cuboid.Z axis and the cuboid heating chamber 3 are from back to front
A line it is parallel.
Radiator 1 on any radiating curtain is all uniformly distributed in X direction and along Z-direction.Meanwhile being located at same spoke
Penetrating the microwave radiated in all radiators 1 on array is coherent wave.On same radiating curtain along X-axis arrangement belong to it is same
The amplitude for the microwave that capable all radiators 1 radiate is identical and phase is identical.Along Z axis arrangement on same radiating curtain
The amplitude for belonging to the microwave of two radiators 1 radiation of the arbitrary neighborhood of same row is identical, opposite in phase.
The Z-direction component of electric field along the center line on Z axis one side on of the microwave that each radiator 1 radiates in each radiator 1
It is zero.
Any radiator 1 is rectangular waveguide.The mode of microwave is basic mode TE10 in the rectangular waveguide radiator
Mode.
The rectangular waveguide radiator along Z axis length Lz be operational microwave free space wavelength 3/5 ~ 9/10.Institute
State the half that rectangular waveguide radiator is less than the wavelength of operational microwave free space along the length Lx of X-axis.
It further include the turntable 4 positioned at 3 bottom of heating chamber.When the laterally homogeneous field microwave oven works, the turntable 4
Around the center axis rotation vertically of the turntable 4.
The swing in the heating chamber 3 of the central axis vertically of the turntable 4.The amplitude of oscillation of the swing is equal to
The integral multiple of operational microwave the distance between certain adjacent electric field maximum point along the longitudinal direction.
For this purpose, being provided with cylindrical body 5 on the axis of the vertical direction of the turntable 4, it is arranged in 3 bottom of heating chamber
There is the rectangular block 6 for being fixed on 3 bottom of heating chamber.5 outer edge of cylindrical body contacts on one side with the rectangular block 6.Institute
5 outer edge of cylindrical body is stated along the rolling on one side of the rectangular block 6, thus while driving the turntable 4 to rotate around own axes
Along the translation on one side of the rectangular block 6.Here the cylindrical body 5 can directly be connect with the shaft of motor.The motor with
The cylindrical body 5 is mobile and its rotation direction is periodically reversed.It is micro- that motor can also be fixed on to the laterally homogeneous field
On Wave heating furnace, the cylindrical body 5 to is sent torque by soft rod or soft stick.
Embodiment 3
As illustrated in Figures 5 and 6.
It compared with embodiment 2, the difference is that only, be provided with circle on the axis of the vertical direction of the turntable 4
Cylinder 5 is provided with the cylindrical body B 5B for being fixed on 3 bottom of heating chamber in 3 bottom of heating chamber.Outside the cylindrical body 5
Edge is contacted with the outer edge of the cylindrical body B 5B.Outer edge of the outer edge of the cylindrical body 5 along the cylindrical body B 5B
It rolls, to drive axis precession of the turntable 4 while rotation around own axes around the cylindrical body B 5B.Here institute
Stating cylindrical body 5 can directly connect with the shaft of motor.The motor is with the cylindrical body 5 around the axis of the cylindrical body B 5B
Circumferentially move.
Embodiment 4
As shown in FIG. 7 and 8.
It compared with embodiment 3, the difference is that only, be provided with circle on the axis of the vertical direction of the turntable 4
Cylinder 5 is provided with cylindrical body A 5A in 3 bottom of heating chamber and round-meshed fixed plate 7 is opened in inside.The cylindrical body 5
Outer edge is contacted with the inside edge of the outer edge of the cylindrical body A 5A and the circular hole of the fixed plate 7 respectively.The cylindrical body A
5A is rotated around the axis of the cylindrical body A 5A, while driving axis rotation of the turntable 4 around the turntable 4, described turn
Axis precession of the axis of disk 4 around the cylindrical body A 5A.Here the cylindrical body A 5A can directly with the shaft of motor
Connection.
Embodiment 5
As shown in Figures 9 and 10.
It compared with embodiment 2, the difference is that only, after a radiating curtain is placed in the heating chamber 3
Side, from back to front to 3 microwave radiation energy of heating chamber.Z axis is parallel with the vertical direction of heating chamber.This arrangement, in heating chamber
In, the microwave field of the main operation modes TE40 mode of incidence wave from back to front and back wave from back to front does not become with height
Change, electric field only has vertical direction component, ensure that heating in the uniformity of vertical direction.Axis of the turntable 4 around the turntable 4
The axis for rotating the turntable 4 simultaneously of line is translated along Y-axis, ensure that the uniformity of heating in the horizontal plane.
Embodiment 6
As shown in FIG. 11 and 12.
It compared with embodiment 5, the difference is that only, 3 bottom of heating chamber be provided with cylindrical body A 5A and square
Shape block A 6A.A side of the rectangular block A 6A contacted with the side of the cylindrical body A 5A and with the cylindrical body 5
Side contact.When axis rotation of the cylindrical body A 5A around the cylindrical body A 5A, by driving the rectangular block A 6A
It is translated along the side of the rectangular block A 6A and drives the turntable 4 to rotate and translate.Here the cylindrical body A 5A can be with
Directly it is connect with the shaft of motor.
Embodiment 7
As shown in Figs. 13 and 14.
It compared with embodiment 5, the difference is that only, be provided with circle on the axis of the vertical direction of the turntable 4
Cylinder 5 is provided with the cylindrical body B 5B for being fixed on 3 bottom of heating chamber in 3 bottom of heating chamber.Outside the cylindrical body 5
Edge is contacted with the outer edge of the cylindrical body B 5B.Outer edge of the outer edge of the cylindrical body 5 along the cylindrical body B 5B
It rolls, to drive axis precession of the turntable 4 while rotation around own axes around the cylindrical body B 5B.Here institute
Stating cylindrical body 5 can directly connect with the shaft of motor.The motor is with the cylindrical body 5 around the axis of the cylindrical body B 5B
Circumferentially move.
Embodiment 8
As shown in figs.
It compared with embodiment 5, the difference is that only, be provided with circle on the axis of the vertical direction of the turntable 4
Cylinder 5 is provided with cylindrical body A 5A in 3 bottom of heating chamber and round-meshed fixed plate 7 is opened in inside.The cylindrical body 5
Outer edge is contacted with the inside edge of the outer edge of the cylindrical body A 5A and the circular hole of the fixed plate 7 respectively.The cylindrical body A
5A is rotated around the axis of the cylindrical body A 5A, while driving axis rotation of the turntable 4 around the turntable 4, described turn
Axis precession of the axis of disk 4 around the cylindrical body A 5A.Here the cylindrical body A 5A can directly with the shaft of motor
Connection.
Claims (8)
1. a kind of laterally homogeneous field microwave oven, which is characterized in that including heating chamber (3), at least one radiating curtain；Institute
Stating at least one radiating curtain includes at least two row radiators (1) along Z axis；The radiating curtain passes through floor (2) Xiang Suoshu
Heating chamber (3) microwave radiation energy；The cross-sectional shape of the radiator (1) is rectangular waveguide；The rectangular waveguide radiation port
It is less than the half of the wavelength of operational microwave free space along the length Lx of X-axis；X-axis, Y-axis and Z axis form right angle coordinate system.
2. laterally homogeneous field microwave oven according to claim 1, which is characterized in that at least one described radiating curtain
It further include at least two column radiators (1) along X-axis；Belong to any of same row along Z axis arrangement on same radiating curtain
The amplitude of the microwave of adjacent two radiators (1) radiation is identical and opposite in phase.
3. laterally homogeneous field microwave oven according to claim 1, which is characterized in that be located at edge on same radiating curtain
X-axis arrangement belongs to electricity along the center line on Z axis one side on of the microwave in each radiator (1) of radiator (1) radiation of same a line
The Z-direction component of field is zero.
4. laterally homogeneous field microwave oven according to claim 1, which is characterized in that in any radiator (1)
The mode of microwave is basic mode TE10 mode；The mode of microwave is basic mode TE10 mode in any radiator (1)；It is described any
Radiator (1) radiation port is along 3/5 ~ 9/10 times of wavelength that the length Lz of Z axis is operational microwave free space.
5. laterally homogeneous field microwave oven according to claim 1, which is characterized in that the shape of the heating chamber (3)
For cuboid；The number of the radiating curtain is 1；One radiating curtain is located at the laterally homogeneous field microwave oven
Above heating chamber (3), from the top down to the heating chamber (3) microwave radiation energy；The Z-direction and the heating chamber (3)
A line from back to front it is parallel.
6. laterally homogeneous field microwave oven according to claim 1, which is characterized in that the shape of the heating chamber (3)
For cuboid；One radiating curtain is located at behind the heating chamber (3), radiates microwave energy to heating chamber (3) from back to front
Amount, can also have another radiating curtain to be located at before the heating chamber (3) simultaneously, radiate from front to back to heating chamber (3)
Microwave energy；The a line from front to back of the Z-direction and the heating chamber (3) is parallel.
7. laterally homogeneous field microwave oven according to claim 1, which is characterized in that further include being located at heating chamber (3)
The turntable (4) of bottom；When the laterally homogeneous field microwave oven works, the turntable (4) is around the turntable (4) along vertical
The center axis rotation in direction；The central axis vertically of the turntable (4) simultaneously put in the heating chamber (3) by front and back
It is dynamic；The amplitude of oscillation of the swing in the heating chamber (3) of central axis vertically of the turntable (4) is equal to operational microwave
The integral multiple of the distance between certain adjacent electric field maximum point along the longitudinal direction.
8. laterally homogeneous field microwave oven according to claim 1, which is characterized in that further include being located at heating chamber (3)
The turntable (4) of bottom；Around the vertical of the heating chamber (3) while the center axis rotation vertically of the turntable (4)
The center line precession in direction；Hanging down around the heating chamber (3) while the center axis rotation vertically of the turntable (4)
Histogram to the diameter of center line precession be operational microwave the distance between certain adjacent electric field maximum point along the longitudinal direction
1.414 integral multiple again.
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| CN106099376A (en) * | 2016-07-15 | 2016-11-09 | 西安电子科技大学 | Miniaturization frequency based on microstrip array feed sweeps electromagnetic horn |
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| CN1392362A (en) * | 2001-06-19 | 2003-01-22 | 季网宝 | Movable microwave oven rotary disc |
| CN104272866A (en) * | 2012-03-09 | 2015-01-07 | 松下电器产业株式会社 | Microwave heating device |
| CN106099376A (en) * | 2016-07-15 | 2016-11-09 | 西安电子科技大学 | Miniaturization frequency based on microstrip array feed sweeps electromagnetic horn |
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