CN106545899B - Rectangular waveguide component and micro-wave oven with it - Google Patents
Rectangular waveguide component and micro-wave oven with it Download PDFInfo
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- CN106545899B CN106545899B CN201610882986.9A CN201610882986A CN106545899B CN 106545899 B CN106545899 B CN 106545899B CN 201610882986 A CN201610882986 A CN 201610882986A CN 106545899 B CN106545899 B CN 106545899B
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (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 it.Rectangular waveguide component includes: rectangular waveguide, and the rectangular waveguide has narrow side and broadside, and microwave transmission chamber is equipped in the rectangular waveguide, and the microwave transmission chamber has short-circuit face；Antenna, the antenna are inserted into the roof of the broadside to protrude into the microwave transmission chamber；At least one tuning block, the tuning block is equipped at least one side wall in the narrow side direction, each tuning block includes tuning block and driving device, the tuning block can be located at up or down on the inner sidewall of the rectangular waveguide, and the driving device is located at outside the microwave transmission chamber and the driving device is suitable for that the corresponding tuning block is driven to move up and down to adjust the distance between the roof positioned at the broadside for tuning block and the rectangular waveguide.Rectangular waveguide component of the invention is conducive to improve the heating efficiency of micro-wave oven and the uniformity of heating.
Description
Technical field
The present invention relates to micro-wave oven technical fields, more particularly, to a kind of rectangular waveguide component and with its micro-wave oven.
Background technique
With studying semiconductor microwave heating technique, in order to improve the heating efficiency and homogeneous heating of micro-wave oven
Property, it is general using the output power, the phase, frequency that adjust semiconductor microactuator wave source, the methods of more feed-ins.However, in the related technology
Micro-wave oven heating efficiency it is still very low, heating uniformity is very poor.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, the present invention mentions
A kind of rectangular waveguide component out, rectangular waveguide component has improved tuning block within this day, when rectangular waveguide component is used in microwave
When on furnace, the heating efficiency 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 an embodiment of the present invention, comprising: rectangular waveguide, the rectangular waveguide have narrow side and width
Side, the rectangular waveguide is interior to be equipped with microwave transmission chamber, and the microwave transmission chamber has short-circuit face；Antenna, the antenna are inserted into institute
The roof of broadside is stated to protrude into the microwave transmission chamber；At least one tuning block, at least the one of the narrow side direction
A side wall is equipped with the tuning block, and each tuning block includes tuning block and driving device, the tuning block can on
Under be movably located on the inner sidewall of the rectangular waveguide, the driving device is located at that the microwave transmission chamber is outer and the driving
Device is described to adjust the tuning block and being located at for the rectangular waveguide suitable for driving the corresponding tuning block to move up and down
The distance between roof of broadside.
Rectangular waveguide component according to an embodiment of the present invention by the way that at least one tuning block is arranged, and passes through driving dress
The distance between the roof positioned at broadside for adjusting tuning block and rectangular waveguide is set, to adjust between tuning block and antenna
Distance, and then be conducive to optimize microwave transmission chamber conducts microwaves performance, then when rectangular waveguide component be used in micro-wave oven
When upper, be conducive to improve the heating efficiency of micro-wave oven and the uniformity of heating.
According to some embodiments of the present invention, the equal length of the length of the tuning block and the rectangular waveguide.
According to some embodiments of the present invention, the tuning block is two, and described two tuning blocks are respectively provided at institute
State rectangular waveguide in the two side walls in the narrow side direction.
According to some embodiments of the present invention, the side wall positioned at the narrow side direction of the rectangular waveguide is equipped with and passes through
The location hole of the side wall is worn, the pivotal axis of the driving device passes through the location hole and is connected with the corresponding tuning block.
According to some embodiments of the present invention, the opening on roof of the antenna by being located at the broadside is inserted into
The microwave transmission chamber, the distance between the center of the opening and the short-circuit face are L, and L meets: λ/4 L=, wherein λ=c/
F, c are the light velocity, and f is working frequency.
Specifically, the center of the opening is located on the perpendicular bisector of the broadside.
According to some embodiments of the present invention, the cross section of the tuning block is square.
According to some embodiments of the present invention, described to tune the neighbouring described of block on the length direction of the tuning block
Round-corner transition between two faces of antenna.
According to some embodiments of the present invention, the side length of the square is D, and D meets D=10mm ± 5mm.
According to some embodiments of the present invention, the tuning block and the distance between the roof being located in the broadside
Meet for H, H: 4mm≤H≤18mm.
According to some embodiments of the present invention, the length for the side wall of the rectangular waveguide being located on narrow side direction is M, institute
The length for the side wall of rectangular waveguide being located in the broadside is stated as N, M and N satisfaction: 30mm≤M≤50,60mm≤N≤
100mm。
Micro-wave oven according to an embodiment of the present invention, including cabinet, be equipped in the cabinet cooking cavity being separated 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 an embodiment of the present invention is conducive to the heating for improving micro-wave oven by the way that rectangular waveguide component is arranged
The uniformity of efficiency and heating.
Detailed description of the invention
Fig. 1 is the perspective view 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 main view of rectangular waveguide component according to some embodiments of the invention.
Appended drawing 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；
Tune block 3.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings.Below with reference to
The embodiment of attached drawing description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", length ", " width ", " thickness ", "upper",
"lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " axial direction ", " radial direction ", " week
To " etc. instructions orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of describing this hair
Bright and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected or can communicate each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field
For those of ordinary skill, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
Below with reference to the accompanying drawings rectangular waveguide component 100 according to an embodiment of the present invention is described, which can
With on micro-wave oven.
As shown in Figure 1-Figure 3, rectangular waveguide component 100 according to an embodiment of the present invention may 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 ease of description, rectangular waveguide component 100 is incorporated in micro-wave oven first and is illustrated.
Micro-wave oven according to an embodiment of the present invention may include cabinet, microwave source and rectangular waveguide component 100.Specifically,
The cooking cavity and placed cavity being separated from each other are equipped in cabinet, wherein be suitable for accommodating food in cooking cavity, be suitable for putting in placed cavity
Set 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 generates can pass through
Rectangular waveguide component 100 is transferred in cooking cavity, in order to the heating to food in cooking cavity.Optionally, microwave source can be
Semiconductor microactuator wave source.Certainly, in further embodiments, microwave source can also be magnetron.
Micro-wave oven according to an embodiment of the present invention is conducive to improve adding for micro-wave oven by the way that rectangular waveguide component 100 is arranged
The uniformity of the thermal efficiency and heating.
Specifically, rectangular waveguide 1 has narrow side 11 and broadside 12, has microwave transmission chamber 13 in rectangular waveguide 1, works as rectangle
When waveguide assemblies 100 are on micro-wave oven, the microwave of the microwave source of micro-wave oven such as semiconductor microactuator wave source transmitting can pass through microwave
Conduction chamber 13 is transferred in the cooking cavity of micro-wave oven.
Microwave transmission chamber 13 has short-circuit face 131 and the surface of emission, and the short-circuit face 131 of micro-wave oven can prevent microwave by short circuit
Face 131 is transferred in the cooking cavity of micro-wave oven in order to more microwaves by the surface of emission in microwave transmission chamber 13, thus just
In the heating of food in the cooking cavity of micro-wave oven.
As shown in figure 3, antenna 2 is inserted into the roof in 12 direction of broadside to protrude into microwave transmission chamber 13.Specifically, antenna 2
It can be electrically connected with above-mentioned microwave source, when micro-wave oven work, the microwave transmission that microwave source generates is passed through to antenna 2, and further
Antenna 2 is crossed to be radiated in the cooking cavity of micro-wave oven.
Tuning block is equipped at least one side wall in the direction of 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, can also be respectively provided in the two side walls in 11 direction of narrow side
A few tuning block.For example, two tuning blocks are respectively set in the two side walls in the direction of narrow side 11, or other
In embodiment, a tuning block is set on one of side wall in the direction of narrow side 11.Alternatively, the two of 11 direction of narrow side
A tuning block is respectively equipped on a side wall.
Specifically, each tuning block includes tuning block 3 and driving device, and tuning block 3 can be located at rectangle up or down
On the inner sidewall of waveguide 1, driving device is located at outside microwave transmission chamber 13 and driving device is suitable for corresponding about 3 block of tuning of driving
Mobile the distance between the roof positioned at 12 direction of broadside to adjust tuning block 3 and rectangular waveguide 1.It is adjusted by driving device
The distance between the roof positioned at 12 direction of broadside of block 3 and rectangular waveguide 1 is tuned, to adjust between tuning block 3 and antenna 2
Distance, and then be conducive to optimize microwave transmission chamber 13 conducts microwaves performance, then when rectangular waveguide component 100 be used in it is micro-
When on wave furnace, be conducive to improve the heating efficiency of micro-wave oven and the uniformity of heating.Herein it should be noted that up and down direction is
Refer to the extending direction of the direction, that is, narrow side 11 vertical with the extending direction of broadside 12.
It is understood that tuning block 3 is conductive.Specifically, the material with high conductivity can be used in tuning block 3
Such as metal material is made.
Rectangular waveguide component 100 according to an embodiment of the present invention by the way that at least one tuning block is arranged, and passes through driving
Device adjust tuning block 3 and rectangular waveguide 1 the distance between the roof positioned at 12 direction of broadside, thus adjust tune block 3 and
The distance between antenna 2, and then be conducive to optimize the performance of the conducts microwaves of microwave transmission chamber 13, then when rectangular waveguide component
100 on micro-wave oven when, be conducive to improve micro-wave oven heating efficiency and heating uniformity.
Optionally, the length of block 3 and the equal length of rectangular waveguide 1 are tuned.Not only structure is simple as a result, and advantageous
In the microwave transmission performance for advanced 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
Be located at rectangular waveguide 1 in the two side walls in 11 direction of narrow side, thus structure is simple.
According to some embodiments of the present invention, the side wall positioned at 11 direction of narrow side of rectangular waveguide 1, which is equipped with, runs through side wall
Location hole, it is connected with corresponding tuning block 3 that the pivotal axis of driving device passes through location hole.Driving device can pass through drive as a result,
Dynamic pivotal axis moving up and down in positioning hole, so that further driving tuning block 3 moves up and down, with adjustment and driving device pair
The distance between the roof positioned at 12 direction of broadside of the tuning block 3 and rectangular waveguide 1 answered, it is simple and reliable for structure.Optionally, pivot
Insulating part can be equipped between shaft and location hole.
In some embodiments of the invention, as shown in Figures 2 and 3, antenna 2 is by being located on the roof in 12 direction of broadside
Opening 121 be inserted into microwave transmission chamber 13, be open 121 center and the distance between short-circuit face 131 meet for L, L: λ/4 L=,
Wherein λ=c/f, c are the light velocity, and f is the working 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, optionally, L 30mm.To optimize 2 component of antenna
100 size and structure.Optionally, opening 121 can be formed as round, rectangular or oval etc..
Preferably, be open 121 center is located on the perpendicular bisector of broadside 12.For example, when two sides in 11 direction of narrow side
When an at least tuning block being respectively set on wall, by being located at the center of opening 121 on the perpendicular bisector of broadside 12, favorably
In optimizing the distance between each tuning block and antenna 2, to be conducive to optimize the conducts microwaves of microwave transmission chamber 13 in turn
Performance, then when rectangular waveguide component 100 is on micro-wave oven, be conducive to improve micro-wave oven heating efficiency and heating
Uniformity.Certainly, the invention is not limited thereto, and in further embodiments, 121 center of being open can also deviate in broadside 12
Vertical line, for example, may make opening 121 when at least one tuning block is arranged on one of side wall in 11 direction of narrow side
Center be arranged close to one side wall.
Optionally, as shown in figure 3, the cross section of tuning block 3 is square, such as the side length of the square as shown in Figure 3
Meet D=10mm ± 5mm for D, D.
Certainly, the invention is not limited thereto, and in further embodiments, the cross section of 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 of block 3 is tuned,
The microwave that avoidable antenna 2 radiates as a result, is motivated on side sharp between two faces and makes the field strength of surrounding very big, is kept away
Exempt from spark occur, to be conducive to improve the reliability that rectangular waveguide component 100 uses.Preferably, the radius of the fillet is greater 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 maximum distance between the roof in 12 direction of broadside can be the length of narrow side 11.
Optionally, tuning block 3 is H with the distance between the roof being located on 12 direction of broadside, and 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 the maximum distance between the roof in 12 direction of broadside be 18mm.
In some embodiments of the invention, the length for the side wall of rectangular waveguide 1 being located on 11 direction of narrow side is M, square
The length for the side wall of shape waveguide 1 being located on 12 direction of broadside is N, M and N satisfaction: 30mm≤M≤50,60mm≤N≤100mm.
Structure is simple as a result,.
It is carried out below with reference to structure of Fig. 1-Fig. 3 to the rectangular waveguide component 100 of a specific embodiment of the invention detailed
Explanation.
As shown in Figure 1-Figure 3, the rectangular waveguide component 100 of the present embodiment, comprising: 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 in rectangular waveguide 1, works as rectangle
When waveguide assemblies 100 are on micro-wave oven, the microwave of the microwave source of micro-wave oven such as semiconductor microactuator wave source transmitting can pass 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
In the two side walls in 11 direction of narrow side.
Microwave transmission chamber 13 has short-circuit face 131 and the surface of emission, and the short-circuit face 131 of micro-wave oven can prevent microwave by short circuit
Face 131 is transferred in the cooking cavity of micro-wave oven in order to more microwaves by the surface of emission in microwave transmission chamber 13, thus just
In the heating of food in the cooking cavity of micro-wave oven.
As shown in Figures 2 and 3, the circular open 121 on roof of the antenna 2 by being located at 12 direction of broadside is inserted into microwave and passes
Guide cavity 13, be open 121 center and the distance between short-circuit face 131 meets for L, L: λ/4 L=, wherein λ=c/f, c are the light velocity,
F is the working frequency of micro-wave oven.Preferably, be open 121 center is located on the perpendicular bisector of broadside 12.
Specifically, each tuning block includes tuning block 3 and driving device, and tuning block 3 can be located at rectangle up or down
On the inner sidewall of waveguide 1, the side wall positioned at 11 direction of narrow side of rectangular waveguide 1 is equipped with the location hole through side wall, driving dress
Setting in microwave transmission chamber 13, outer and driving device pivotal axis passes through location hole and is connected with corresponding tuning block 3, driving device
It can be moved up and down by driving pivotal axis in positioning hole, so that further driving tuning block 3 moves up and down, to adjust and drive
The distance between the roof positioned at 12 direction of broadside of the corresponding tuning block 3 and rectangular waveguide 1 of device, and then adjust tuning block 3
The distance between antenna 2 is then conducive to the performance for optimizing the conducts microwaves of microwave transmission chamber 13, when rectangular waveguide component
100 on micro-wave oven when, be conducive to improve micro-wave oven heating efficiency and heating uniformity.
Optionally, as shown in figure 3, the cross section of tuning block 3 is square, the side length of the square 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 of block 3 is tuned,
The microwave that avoidable antenna 2 radiates as a result, is motivated on side sharp between two faces and makes the field strength of surrounding very big, is kept away
Exempt from spark occur, to be conducive to improve the reliability that rectangular waveguide component 100 uses.Preferably, the radius of the fillet is greater than
Equal to 1mm.
The length for the side wall of rectangular waveguide 1 being located on 11 direction of narrow side is M, and rectangular waveguide 1 is located at 12 direction of broadside
On side wall length be N, M and N meet: 30mm≤M≤50,60mm≤N≤100mm.Tune the length and rectangular waveguide of block 3
1 equal length.Not only structure is simple as a result, and is conducive to advanced optimize the microwave transmission performance of microwave transmission chamber 13.
The micro-wave oven for being not provided with above-mentioned tuning block is respectively adopted in practical study and with above-mentioned rectangle by inventor
The micro-wave oven of waveguide assemblies 100 is tested.
In test, it is put into 1L water in cooking cavity, is taken out from micro-wave oven when by the tuning block 3 of rectangular waveguide component 100
When not using tuning block, make the working frequency of micro-wave oven in 2.4GHz to when constantly changing between 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 1, when standing wave value is equal to 2, microwave is passed
Defeated efficiency is 88.9%, when being put into 1L water, it usually needs by the optimization of standing wave value below 2.
There are also the standing wave values under many frequencies to be unsatisfactory for design requirement in upper table, is fitted into micro-wave oven by that will tune block 3
On, and two tuning blocks 3 of adjusting optimize standing wave value positioned at the distance between roof of broadside 12 with rectangular waveguide 1, specifically
It is as follows:
One of tuning block 3 is adjusted when 2.40GHz and the distance between the roof positioned at broadside 12 of rectangular waveguide 1 is
10mm, another tuning block 3 and rectangular waveguide 1 are 12mm positioned at the distance between roof of broadside 12, obtain standing wave 1.3；
One of tuning block 3 is adjusted when 2.41GHz and the distance between the roof positioned at broadside 12 of rectangular waveguide 1 is
12mm, another tuning block 3 and rectangular waveguide 1 are 18mm positioned at the distance between roof of broadside 12, obtain standing wave 1.45；
One of tuning block 3 is adjusted when 2.44GHz and the distance between the roof positioned at broadside 12 of rectangular waveguide 1 is
4mm, another tuning block 3 and rectangular waveguide 1 are 4mm positioned at the distance between roof of broadside 12, obtain standing wave 1.5；
One of tuning block 3 is adjusted when 2.45GHz and the distance between the roof positioned at broadside 12 of rectangular waveguide 1 is
6mm, another tuning block 3 and rectangular waveguide 1 are 4mm positioned at the distance between roof of broadside 12, obtain standing wave 1.45；
One of tuning block 3 is adjusted when 2.47GHz and the distance between the roof positioned at broadside 12 of rectangular waveguide 1 is
8mm, another tuning block 3 and rectangular waveguide 1 are 10mm positioned at the distance between roof of broadside 12, obtain standing wave 1.2；
One of tuning block 3 is adjusted when 2.48GHz and the distance between the roof positioned at broadside 12 of rectangular waveguide 1 is
8mm, another tuning block 3 and rectangular waveguide 1 are 14mm positioned at the distance between roof of broadside 12, obtain standing wave 1.3；
One of tuning block 3 is adjusted when 2.50GHz and the distance between the roof positioned at broadside 12 of rectangular waveguide 1 is
6mm, another tuning block 3 and rectangular waveguide 1 are 6mm positioned at the distance between roof of broadside 12, obtain standing wave 1.25；
Wherein, the tuning precision for tuning block 3 is within 2mm.
As a result, in microwave stove heating, by changing the working frequency of semiconductor microactuator wave source, and two are adjusted on this basis
The distance between the roof positioned at broadside 12 of a tuning block 3 and rectangular waveguide 1, can guarantee that standing wave value is all under different phases
Less than 2, so as to keep heating efficiency higher, heating uniformity is more preferable.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (12)
1. a kind of rectangular waveguide component characterized by comprising
Rectangular waveguide, the rectangular waveguide have narrow side and broadside, are equipped with microwave transmission chamber, the microwave in the rectangular waveguide
Conducting chamber has short-circuit face；
Antenna, the antenna are inserted into the roof of the broadside to protrude into the microwave transmission chamber；
At least one tuning block is equipped with the tuning block at least one side wall in the narrow side direction, each described
Tuning block includes tuning block and driving device, and the tuning block can be located at the inner sidewall of the rectangular waveguide up or down
On, the driving device is located at outside the microwave transmission chamber and the driving device is suitable for driving the corresponding tuning block or more
Mobile the distance between the roof positioned at the broadside to adjust the tuning block and the rectangular waveguide.
2. rectangular waveguide component according to claim 1, which is characterized in that the length of the tuning block and the rectangular wave
The equal length led.
3. rectangular waveguide component according to claim 1, which is characterized in that the tuning block is two, described two
Tuning block be respectively provided at the rectangular waveguide in the two side walls in the narrow side direction.
4. rectangular waveguide component according to claim 1, which is characterized in that the rectangular waveguide is located at the narrow side side
To side wall be equipped with the location hole through the side wall, the pivotal axis of the driving device pass through the location hole with it is corresponding
The tuning block be connected.
5. rectangular waveguide component according to claim 1, which is characterized in that the antenna is by being located at the broadside
Roof on opening be inserted into the microwave transmission chamber, the distance between the center of the opening and the short-circuit face are L, and L is full
Foot: λ/4 L=, wherein λ=c/f, c are the light velocity, and f is the working frequency of micro-wave oven.
6. rectangular waveguide component according to claim 5, which is characterized in that the center of the opening is located at the broadside
On perpendicular bisector.
7. rectangular waveguide component according to claim 1, which is characterized in that the cross section of the tuning block is square.
8. rectangular waveguide component according to claim 7, which is characterized in that on the length direction of the tuning block, institute
State round-corner transition between two faces of the neighbouring antenna of tuning block.
9. rectangular waveguide component according to claim 7, which is characterized in that the side length of the square is D, and D meets D=
10mm±5mm。
10. rectangular waveguide component according to claim 1, which is characterized in that the tuning block be located at the broadside side
The distance between upward roof is H, and H meets: 4mm≤H≤18mm.
11. rectangular waveguide component according to claim 1, which is characterized in that the rectangular waveguide is located at narrow side direction
On side wall length be M, the rectangular waveguide be located at the broadside on side wall length be N, M and N meet:
30mm≤M≤50,60mm≤N≤100mm.
12. a kind of micro-wave oven, which is characterized in that including
Cabinet, the cabinet is interior to be equipped with the cooking cavity and placed cavity being separated from each other；
Microwave source, the microwave source are located in the placed cavity；
According to claim 1, rectangular waveguide component described in any one of -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 CN106545899A (en) | 2017-03-29 |
| CN106545899B true CN106545899B (en) | 2019-08-30 |
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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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| US4324965A (en) * | 1979-07-25 | 1982-04-13 | Hermann Berstorff Maschinenbau Gmbh | Microwave heating method and apparatus including adjustable tuning members |
| JP2627730B2 (en) * | 1993-09-23 | 1997-07-09 | エルジー電子株式会社 | Automatic matching device for microwave oven |
| CN2408566Y (en) * | 1999-08-17 | 2000-11-29 | 复旦大学 | Small wave guide micro wave sulfur lamp |
| CN1333489C (en) * | 2005-03-23 | 2007-08-22 | 长飞光纤光缆有限公司 | Plasma resonant cavity tunable waveguide device |
| MX2009002097A (en) * | 2006-09-01 | 2009-05-28 | Ind Microwave Systems Llc | Microwave t-junction applicator. |
| US20090139988A1 (en) * | 2007-12-03 | 2009-06-04 | Farnworth Warren M | System for creating more uniform distribution of microwave energy in a cavity |
| CN105390785B (en) * | 2015-10-28 | 2018-11-27 | 广东美的厨房电器制造有限公司 | A kind of micro-wave oven, rectangular waveguide and its determine method |
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