CN106545899A - Rectangular waveguide component and the micro-wave oven with which - Google Patents
Rectangular waveguide component and the micro-wave oven with which Download PDFInfo
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- CN106545899A CN106545899A CN201610882986.9A CN201610882986A CN106545899A CN 106545899 A CN106545899 A CN 106545899A CN 201610882986 A CN201610882986 A CN 201610882986A CN 106545899 A CN106545899 A CN 106545899A
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- rectangular waveguide
- tuning block
- broadside
- waveguide component
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/002—Stoves
-
- 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
-
- 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
-
- 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
- H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
- H05B2206/04—Heating using microwaves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Constitution Of High-Frequency Heating (AREA)
Abstract
The present invention discloses a kind of rectangular waveguide component and the micro-wave oven with which.Rectangular waveguide component includes：Rectangular waveguide, the rectangular waveguide have narrow side and broadside, and microwave transmission chamber is provided with the rectangular waveguide, and the microwave transmission chamber has short-circuit face；Antenna, the antenna insert the roof of the broadside to stretch into the microwave transmission chamber；At least one tuning block, the tuning block is provided with least one side wall of the narrow edge direction, each described tuning block includes tuning block and driving means, the tuning block can be located on the madial wall of the rectangular waveguide up or down, and the driving means are located at that the microwave transmission chamber is outer and the driving means are suitable to drive the corresponding tuning block to move up and down and described tune the distance between block and roof positioned at the broadside of the rectangular waveguide to adjust.The rectangular waveguide component of the present invention, is conducive to improving the uniformity of the efficiency of heating surface of micro-wave oven and heating.
Description
Technical field
The present invention relates to micro-wave oven technical field, more particularly, to a kind of rectangular waveguide component and the micro-wave oven with which.
Background technology
With studying to semiconductor microwave heating technique, in order to improve the efficiency of heating surface and homogeneous heating of micro-wave oven
Property, typically using the power output of regulation semiconductor microactuator wave source, phase place, frequency, the method such as many feed-ins.However, in correlation technique
Micro-wave oven the efficiency of heating surface it is still very low, heating uniformity is very poor.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this purpose, the present invention is carried
Go out a kind of rectangular waveguide component, rectangular waveguide component has improved tuning block within this day, when rectangular waveguide component is used in microwave
When on stove, the efficiency of heating surface of micro-wave oven and the uniformity of heating can be improved.
The present invention also proposes a kind of micro-wave oven, including above-mentioned rectangular waveguide component.
Rectangular waveguide component according to embodiments of the present invention, including：Rectangular waveguide, the rectangular waveguide have narrow side and width
Side, is provided with microwave transmission chamber in the rectangular waveguide, the microwave transmission chamber has short-circuit face；Antenna, the antenna insert institute
The roof of broadside is stated to stretch into the microwave transmission chamber；At least one tuning block, at least the one of the narrow edge direction
Individual side wall is provided with the tuning block, and each described tuning block includes tuning block and driving means, and the tuning block can be gone up
Under be movably located on the madial wall of the rectangular waveguide, the driving means be located at the microwave transmission chamber outside and the driving
Device is suitable to drive the corresponding tuning block to move up and down to adjust the tuning block with the rectangular waveguide positioned at described
The distance between roof of broadside.
Rectangular waveguide component according to embodiments of the present invention, by arranging at least one tuning block, and by driving dress
The distance between roof positioned at broadside of regulation tuning block and rectangular waveguide is put, so as to adjust between tuning block and antenna
Distance, and then the performance of the conducts microwaves for being conducive to optimizing microwave transmission chamber, then when rectangular waveguide component is used in micro-wave oven
When upper, be conducive to improving the uniformity of the efficiency of heating surface of micro-wave oven and heating.
Some embodiments of the invention, the length of the tuning block and the equal length of the rectangular waveguide.
Some embodiments of the invention, the tuning block are two, and described two tuning blocks are respectively provided at institute
State on two side walls positioned at the narrow edge direction of rectangular waveguide.
Some embodiments of the invention, the side wall positioned at the narrow edge direction of the rectangular waveguide are provided with and pass through
The location hole of the side wall is worn, the pivotal axis of the driving means is connected through the location hole with the corresponding tuning block.
Some embodiments of the invention, the antenna is by the opening insertion on the roof of the broadside
The distance between the microwave transmission chamber, the center of the opening and described short-circuit face are L, and L meets：L=λ/4, wherein λ=c/
F, c are the light velocity, and f is operating frequency.
Specifically, the opening is centrally located on the center line of the broadside.
Some embodiments of the invention, the cross section of the tuning block is square.
Some embodiments of the invention, it is on the length direction of the tuning block, described to tune the neighbouring described of block
Round-corner transition between two faces of antenna.
Some embodiments of the invention, the foursquare length of side are D, and D meets D=10mm ± 5mm.
Some embodiments of the invention, the distance between the tuning block and the roof in the broadside
For H, H satisfactions：4mm≤H≤18mm.
Some embodiments of the invention, the length of the side wall on narrow edge direction of the rectangular waveguide is M, institute
The length for stating the side wall in the broadside of rectangular waveguide is met for N, M and N：30mm≤M≤50,60mm≤N≤
100mm。
Micro-wave oven according to embodiments of the present invention, including casing, be provided with the casing cooking cavity that is spaced apart from each other and
Placed cavity；Microwave source, the microwave source are located in the placed cavity；Above-mentioned rectangular waveguide component, the rectangular waveguide component
It is connected between the microwave source and the cooking cavity.
Micro-wave oven according to embodiments of the present invention, by arranging rectangular waveguide component, is conducive to improving the heating of micro-wave oven
Efficiency and the uniformity of heating.
Description of the drawings
Fig. 1 is the stereogram of rectangular waveguide component according to some embodiments of the invention；
Fig. 2 is the top view of rectangular waveguide component according to some embodiments of the invention；
Fig. 3 is the front view of rectangular waveguide component according to some embodiments of the invention.
Reference：
Rectangular waveguide component 100；
Rectangular waveguide 1；Narrow side 11；Broadside 12；Opening 121；Microwave transmission chamber 13；Short-circuit face 131；
Antenna 2；
Tuning block 3.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings.Below with reference to
The embodiment of Description of Drawings is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In describing the invention, it is to be understood that term " " center ", length ", " width ", " thickness ", " on ",
D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " axial direction ", " radial direction ", " week
To " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description this
Bright and simplified description, rather than indicate or imply that the device or element of indication must be with specific orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or it is integral；Can be that machinery connects
Connect, or electrically connect or can communicate each other；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be with
It is connection or the interaction relationship of two elements of two element internals, unless otherwise clearly restriction.For this area
For those of ordinary skill, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Below with reference to the accompanying drawings rectangular waveguide component 100 according to embodiments of the present invention is described, the rectangular waveguide component 100 can
On micro-wave oven.
As shown in Figure 1-Figure 3, rectangular waveguide component 100 according to embodiments of the present invention, can include：Rectangular waveguide 1, day
Line 2 and at least one tuning block.Herein it is understood that " at least one " refers to one or more.
For the ease of description, rectangular waveguide component 100 is combined illustrate in micro-wave oven first.
Micro-wave oven according to embodiments of the present invention, can include casing, microwave source and rectangular waveguide component 100.Specifically,
The cooking cavity and placed cavity being spaced apart from each other is provided with casing, wherein, accommodating food is suitable in cooking cavity, is suitable to put in placed cavity
Put the other structures such as microwave source and rectangular waveguide component 100 of micro-wave oven.
Specifically, rectangular waveguide component 100 is connected between microwave source and cooking cavity, and the microwave that microwave source is produced can be passed through
Rectangular waveguide component 100 is transferred in cooking cavity, in order to the heating to food in cooking cavity.Alternatively, microwave source can be
Semiconductor microactuator wave source.Certainly, in further embodiments, microwave source can also be magnetron.
Micro-wave oven according to embodiments of the present invention, by arranging rectangular waveguide component 100, is conducive to improving adding for micro-wave oven
The thermal efficiency and the uniformity of heating.
Specifically, rectangular waveguide 1 has narrow side 11 and broadside 12, has microwave transmission chamber 13, work as rectangle in rectangular waveguide 1
When waveguide assemblies 100 are used on micro-wave oven, the microwave of the microwave source such as semiconductor microactuator wave source transmitting of micro-wave oven can be through microwave
Conduction chamber 13 is transferred in the cooking cavity of micro-wave oven.
The short-circuit face 131 that microwave transmission chamber 13 has short-circuit face 131 and the surface of emission, micro-wave oven can prevent microwave through short circuit
The surface of emission of the face 131 in order to more microwaves in microwave transmission chamber 13 is transferred in the cooking cavity of micro-wave oven, so as to just
The heating of food in the cooking cavity of micro-wave oven.
As shown in figure 3, antenna 2 inserts the roof in 12 direction of broadside to stretch in microwave transmission chamber 13.Specifically, antenna 2
Can electrically connect with above-mentioned microwave source, when micro-wave oven works, the microwave transmission that microwave source is produced is to antenna 2, and further Jing
Cross antenna 2 to be radiated in the cooking cavity of micro-wave oven.
Tuning block is provided with least one side wall in the direction on narrow side 11, that is to say, that can be in 11 direction of narrow side
One of side wall at least one tuning block is set, it is also possible to be respectively provided on two side walls in 11 direction of narrow side
A few tuning block.For example, two tuning blocks are respectively provided with two side walls in the direction on narrow side 11, or at other
In embodiment, a tuning block is set on one of side wall in the direction on narrow side 11.Or, the two of 11 direction of narrow side
A tuning block is respectively equipped with individual side wall.
Specifically, each tuning block includes tuning block 3 and driving means, and tuning block 3 can be located at rectangle up or down
On the madial wall of waveguide 1, driving means are located at that microwave transmission chamber 13 is outer and driving means are suitable to drive corresponding tuning block about 3
The distance between mobile roof positioned at 12 direction of broadside to adjust tuning block 3 and rectangular waveguide 1.Adjusted by driving means
The distance between roof positioned at 12 direction of broadside of tuning block 3 and rectangular waveguide 1, so as to adjust between tuning block 3 and antenna 2
Distance, and then the performance of the conducts microwaves for being conducive to optimizing microwave transmission chamber 13, then when rectangular waveguide component 100 be used in it is micro-
When on ripple stove, be conducive to improving the uniformity of the efficiency of heating surface of micro-wave oven and heating.Herein it should be noted that above-below direction is
Refer to the bearing of trend on the direction Ji Zhai side 11 vertical with the bearing of trend of broadside 12.
It is understood that tuning block 3 has electric conductivity.Specifically, tune block 3 and can use the material with high conductivity
For example metal material is made.
Rectangular waveguide component 100 according to embodiments of the present invention, by arranging at least one tuning block, and by driving
Device adjusts the distance between tuning block 3 and roof positioned at 12 direction of broadside of rectangular waveguide 1, so as to adjust tuning block 3 with
The distance between antenna 2, and then the performance of the conducts microwaves for being conducive to optimizing microwave transmission chamber 13, then when rectangular waveguide component
100 be used in micro-wave oven on when, be conducive to improve micro-wave oven the efficiency of heating surface and heating uniformity.
Alternatively, tune the equal length of the length with rectangular waveguide 1 of block 3.Thus, not only simple structure, and favorably
In the microwave transmission performance for further optimizing microwave transmission chamber 13.
In some embodiments of the invention, as shown in figures 1 and 3, tuning block is two, two tuning block difference
It is located on two side walls positioned at 11 direction of narrow side of rectangular waveguide 1, thus simple structure.
Some embodiments of the invention, the side wall positioned at 11 direction of narrow side of rectangular waveguide 1 are provided with through side wall
Location hole, the pivotal axis of driving means is connected through location hole with corresponding tuning block 3.Thus, driving means can be by driving
Dynamic pivotal axis moving up and down in location hole, so as to further drive tuning block 3 to move up and down, to adjust and driving means pair
The distance between the tuning block 3 answered and the roof positioned at 12 direction of broadside of rectangular waveguide 1, it is simple and reliable for structure.Alternatively, pivot
Insulating part can be provided between rotating shaft and location hole.
In some embodiments of the invention, as shown in Figures 2 and 3, antenna 2 is by the roof in 12 direction of broadside
The insertion of opening 121 microwave transmission chamber 13,121 the distance between center and the short-circuit face 131 of being open is L, and L meets：L=λ/4,
Wherein λ=c/f, c are the light velocity, and f is the operating frequency of micro-wave oven.The light velocity mentioned here refers to the aerial spread speed of light
That is c=300000km/s.For example, as 2.4GHz≤f≤2.5GHz, alternatively, L is 30mm.So as to optimize 2 component of antenna
100 size and structure.Alternatively, opening 121 can be formed as circular, square or oval etc..
Preferably, opening 121 is centrally located on the center line of broadside 12.For example, when two sides in 11 direction of narrow side
When an at least tuning block is respectively provided with wall, it is centrally located on the center line of broadside 12, favorably by causing opening 121
In the distance between each tuning block and antenna 2 is optimized, so as to further be conducive to optimizing the conducts microwaves in microwave transmission chamber 13
Performance, then when rectangular waveguide component 100 be used in micro-wave oven on when, be conducive to improve micro-wave oven the efficiency of heating surface and heating
Uniformity.Certainly, the invention is not restricted to this, in further embodiments, the center of opening 121 can also be deviateed in broadside 12
Heart line, for example, when at least one tuning block is arranged on one of side wall in 11 direction of narrow side, can cause opening 121
Center arrange near one side wall.
Alternatively, as shown in figure 3, the cross section of tuning block 3 is square, such as the foursquare length of side as shown in Figure 3
For D, D meets D=10mm ± 5mm.
Certainly, the invention is not restricted to this, in further embodiments, the cross section for tuning block 3 may be formed as other
Shape such as rectangle.
Specifically, on the length direction of tuning block 3, round-corner transition between two faces of the adjacent antennas 2 for tuning block 3,
Thus, it is energized on the side sharp between two faces of microwave that the radiation of antenna 2 can be avoided and the field intensity around causing is very big, keeps away
Exempt from spark occur, so as to be conducive to improving the reliability that rectangular waveguide component 100 is used.Preferably, the radius of the fillet is more than
Equal to 1mm.
It is understood that tuning block 3 and the minimum range between the roof in 12 direction of broadside can be 0mm, adjust
Humorous piece 3 and the ultimate range between the roof in 12 direction of broadside can be the length on narrow side 11.
Alternatively, the distance between block 3 and the roof on 12 direction of broadside are tuned for H, H meets：4mm≤H≤
18mm.That is, each tuning block 3 and the minimum range between the roof in 12 direction of broadside are 4mm, each tuning block
3 and ultimate range between the roof in 12 direction of broadside be 18mm.
In some embodiments of the invention, the length of the side wall on 11 direction of narrow side of rectangular waveguide 1 be M, square
The length of the side wall on 12 direction of broadside of shape waveguide 1 is met for N, M and N：30mm≤M≤50,60mm≤N≤100mm.
Thus, simple structure.
The structure of the rectangular waveguide component 100 of a specific embodiment of the invention is carried out in detail below with reference to Fig. 1-Fig. 3
Explanation.
As shown in Figure 1-Figure 3, the rectangular waveguide component 100 of the present embodiment, including：Rectangular waveguide 1, antenna 2 and two tune
Humorous component.
Specifically, rectangular waveguide 1 has narrow side 11 and broadside 12, has microwave transmission chamber 13, work as rectangle in rectangular waveguide 1
When waveguide assemblies 100 are used on micro-wave oven, the microwave of the microwave source such as semiconductor microactuator wave source transmitting of micro-wave oven can be through microwave
Conduction chamber 13 is transferred in the cooking cavity of micro-wave oven.As shown in figures 1 and 3, two tuning blocks are respectively provided at rectangular waveguide 1
On two side walls in 11 direction of narrow side.
The short-circuit face 131 that microwave transmission chamber 13 has short-circuit face 131 and the surface of emission, micro-wave oven can prevent microwave through short circuit
The surface of emission of the face 131 in order to more microwaves in microwave transmission chamber 13 is transferred in the cooking cavity of micro-wave oven, so as to just
The heating of food in the cooking cavity of micro-wave oven.
As shown in Figures 2 and 3, antenna 2 inserts microwave by the circular open 121 on the roof in 12 direction of broadside and passes
The distance between guide cavity 13, center and short circuit face 131 of opening 121 are L, L satisfactions：L=λ/4, wherein λ=c/f, c are the light velocity,
Operating frequencies of the f for micro-wave oven.Preferably, opening 121 is centrally located on the center line of broadside 12.
Specifically, each tuning block includes tuning block 3 and driving means, and tuning block 3 can be located at rectangle up or down
On the madial wall of waveguide 1, the side wall positioned at 11 direction of narrow side of rectangular waveguide 1 is provided with the location hole through side wall, drives dress
Setting in microwave transmission chamber 13, the pivotal axis of outer and driving means is connected through location hole with corresponding tuning block 3, driving means
Can be moved up and down in location hole by driving pivotal axis, so as to further drive tuning block 3 to move up and down, to adjust and drive
The distance between roof positioned at 12 direction of broadside of the corresponding tuning block 3 of device and rectangular waveguide 1, and then adjust tuning block 3
The distance between with antenna 2, the performance of the conducts microwaves for being conducive to then optimizing microwave transmission chamber 13, when rectangular waveguide component
100 be used in micro-wave oven on when, be conducive to improve micro-wave oven the efficiency of heating surface and heating uniformity.
Alternatively, as shown in figure 3, the cross section of tuning block 3 is square, the foursquare length of side is D, and D meets D=
10mm±5mm。
Specifically, on the length direction of tuning block 3, round-corner transition between two faces of the adjacent antennas 2 for tuning block 3,
Thus, it is energized on the side sharp between two faces of microwave that the radiation of antenna 2 can be avoided and the field intensity around causing is very big, keeps away
Exempt from spark occur, so as to be conducive to improving the reliability that rectangular waveguide component 100 is used.Preferably, the radius of the fillet is more than
Equal to 1mm.
The length of the side wall on 11 direction of narrow side of rectangular waveguide 1 be M, rectangular waveguide 1 positioned at 12 direction of broadside
On side wall length be N, M and N meet：30mm≤M≤50,60mm≤N≤100mm.The length and rectangular waveguide of tuning block 3
1 equal length.Thus, not only simple structure, and be conducive to further optimizing the microwave transmission performance in microwave transmission chamber 13.
Inventor is respectively adopted the micro-wave oven that is not provided with above-mentioned tuning block and in practical study with above-mentioned rectangle
The micro-wave oven of waveguide assemblies 100 is tested.
In test, 1L water is put in cooking cavity, when the tuning block 3 by rectangular waveguide component 100 is taken out from micro-wave oven
When not using tuning block, when the operating frequency of micro-wave oven is continually changing between 2.4GHz to 2.5GHz, cooking cavity
Standing wave value is as shown in the table.
| Frequency (GHz) | 2.40 | 2.41 | 2.42 | 2.43 | 2.44 | 2.45 | 2.46 | 2.47 | 2.48 | 2.49 | 2.50 |
| Standing wave value | 5 | 2.2 | 1.2 | 1.75 | 4 | 4 | 1.6 | 2.8 | 4.3 | 1.5 | 3.9 |
It is understood to one skilled in the art that standing wave value is the smaller the better, ideal value is 1, and when standing wave value is equal to 2, microwave is passed
Defeated efficiency is 88.9%, when 1L water is put into, it usually needs optimize standing wave value below 2.
There is the standing wave value under many frequencies to be unsatisfactory for design requirement in upper table, by tuning block 3 is fitted into micro-wave oven
On, and adjust the distance between roof positioned at broadside 12 of two tuning blocks 3 and rectangular waveguide 1 to optimize standing wave value, specifically
It is as follows：
The distance between one of tuning block 3 and roof positioned at broadside 12 of rectangular waveguide 1 are adjusted during 2.40GHz is
The distance between roof positioned at broadside 12 of 10mm, another tuning block 3 and rectangular waveguide 1 is 12mm, obtains standing wave 1.3；
The distance between one of tuning block 3 and roof positioned at broadside 12 of rectangular waveguide 1 are adjusted during 2.41GHz is
The distance between roof positioned at broadside 12 of 12mm, another tuning block 3 and rectangular waveguide 1 is 18mm, obtains standing wave 1.45；
The distance between one of tuning block 3 and roof positioned at broadside 12 of rectangular waveguide 1 are adjusted during 2.44GHz is
The distance between roof positioned at broadside 12 of 4mm, another tuning block 3 and rectangular waveguide 1 is 4mm, obtains standing wave 1.5；
The distance between one of tuning block 3 and roof positioned at broadside 12 of rectangular waveguide 1 are adjusted during 2.45GHz is
The distance between roof positioned at broadside 12 of 6mm, another tuning block 3 and rectangular waveguide 1 is 4mm, obtains standing wave 1.45；
The distance between one of tuning block 3 and roof positioned at broadside 12 of rectangular waveguide 1 are adjusted during 2.47GHz is
The distance between roof positioned at broadside 12 of 8mm, another tuning block 3 and rectangular waveguide 1 is 10mm, obtains standing wave 1.2；
The distance between one of tuning block 3 and roof positioned at broadside 12 of rectangular waveguide 1 are adjusted during 2.48GHz is
The distance between roof positioned at broadside 12 of 8mm, another tuning block 3 and rectangular waveguide 1 is 14mm, obtains standing wave 1.3；
The distance between one of tuning block 3 and roof positioned at broadside 12 of rectangular waveguide 1 are adjusted during 2.50GHz is
The distance between roof positioned at broadside 12 of 6mm, another tuning block 3 and rectangular waveguide 1 is 6mm, obtains standing wave 1.25；
Wherein, the tuning precision of block 3 is tuned within 2mm.
Thus, in microwave-oven-heating, by the operating frequency for changing semiconductor microactuator wave source, and two are adjusted on this basis
The distance between roof positioned at broadside 12 of individual tuning block 3 and rectangular waveguide 1, can guarantee that standing wave value is all under different phase places
Less than 2, so as to the efficiency of heating surface can be made higher, heating uniformity is more preferable.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
Example ", or the description of " some examples " etc. mean specific features with reference to the embodiment or example description, structure, material or spy
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in one or more embodiments or example in an appropriate manner.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments or example described in this specification and different embodiments or example can be tied by art personnel
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (12)
1. a kind of rectangular waveguide component, it is characterised in that include：
Rectangular waveguide, the rectangular waveguide have narrow side and broadside, and microwave transmission chamber, the microwave are provided with the rectangular waveguide
Conduction chamber has short-circuit face；
Antenna, the antenna insert the roof of the broadside to stretch into the microwave transmission chamber；
At least one tuning block, is provided with the tuning block at least one side wall of the narrow edge direction, described in each
Tuning block includes tuning block and driving means, and the tuning block can be located at the madial wall of the rectangular waveguide up or down
On, the driving means are located at outside the microwave transmission chamber and the driving means are suitable to drive the corresponding tuning block upper and lower
It is mobile adjusting the distance between the tuning block and roof positioned at the broadside of the rectangular waveguide.
2. rectangular waveguide component according to claim 1, it is characterised in that the length of the tuning block and the square wave
The equal length led.
3. rectangular waveguide component according to claim 1, it is characterised in that the tuning block is two, described two
Tuning block is respectively provided on two side walls positioned at the narrow edge direction of the rectangular waveguide.
4. rectangular waveguide component according to claim 1, it is characterised in that the rectangular waveguide positioned at the narrow side side
To side wall be provided with the location hole through the side wall, the pivotal axis of the driving means through the location hole with it is corresponding
The tuning block be connected.
5. rectangular waveguide component according to claim 1, it is characterised in that the antenna is by positioned at the broadside
Roof on opening insert the microwave transmission chamber, the distance between the center of the opening and described short-circuit face are L, and L is full
Foot：L=λ/4, wherein λ=c/f, c are the light velocity, and f is operating frequency.
6. rectangular waveguide component according to claim 5, it is characterised in that the opening is centrally located at the broadside
On center line.
7. rectangular waveguide component according to claim 1, it is characterised in that the cross section of the tuning block is square.
8. rectangular waveguide component according to claim 7, it is characterised in that on the length direction of the tuning block, institute
Round-corner transition between two faces of the neighbouring described antenna for stating tuning block.
9. rectangular waveguide component according to claim 7, it is characterised in that the foursquare length of side is D, D meets D=
10mm±5mm。
10. rectangular waveguide component according to claim 1, it is characterised in that the tuning block be located at the broadside side
The distance between roof upwards be H, H meet：4mm≤H≤18mm.
11. rectangular waveguide components according to claim 1, it is characterised in that the rectangular waveguide positioned at narrow edge direction
On the length of side wall be M, the length of the side wall in the broadside of the rectangular waveguide is N, M and N satisfaction：
30mm≤M≤50,60mm≤N≤100mm.
12. a kind of micro-wave ovens, it is characterised in that include
Casing, is provided with the cooking cavity and placed cavity being spaced apart from each other in the casing；
Microwave source, the microwave source are located in the placed cavity；
Rectangular waveguide component according to any one of claim 1-11, the rectangular waveguide component are connected to the microwave
Between source and the cooking cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882986.9A CN106545899B (en) | 2016-10-08 | 2016-10-08 | Rectangular waveguide component and micro-wave oven with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882986.9A CN106545899B (en) | 2016-10-08 | 2016-10-08 | Rectangular waveguide component and micro-wave oven with it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106545899A true CN106545899A (en) | 2017-03-29 |
| CN106545899B CN106545899B (en) | 2019-08-30 |
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| CN201610882986.9A Active CN106545899B (en) | 2016-10-08 | 2016-10-08 | Rectangular waveguide component and micro-wave oven with it |
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| CN109526083A (en) * | 2018-11-20 | 2019-03-26 | 成都赛纳微波科技有限公司 | Swing microwave heating equipment |
| CN109519981A (en) * | 2018-11-20 | 2019-03-26 | 成都赛纳为特科技有限公司 | Vertical uniform type micro-wave heating furnace |
| CN109743806A (en) * | 2018-12-17 | 2019-05-10 | 四川大学 | A kind of method and its dual-port microwave heating equipment promoting microwave heating uniformity |
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| CN109743806A (en) * | 2018-12-17 | 2019-05-10 | 四川大学 | A kind of method and its dual-port microwave heating equipment promoting microwave heating uniformity |
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| CN106545899B (en) | 2019-08-30 |
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