CN103591620B - A kind of microwave oven and its control method - Google Patents
A kind of microwave oven and its control method Download PDFInfo
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- CN103591620B CN103591620B CN201210293439.9A CN201210293439A CN103591620B CN 103591620 B CN103591620 B CN 103591620B CN 201210293439 A CN201210293439 A CN 201210293439A CN 103591620 B CN103591620 B CN 103591620B
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Abstract
The invention discloses a kind of microwave oven, including：Body of heater, is formed with cooking chamber and Machine Room in body of heater；Microwave generator, microwave generator is arranged on machinery interior；Antenna assembly, it is indoor and rotatable around vertical direction that antenna assembly is located at culinary art；Driving means, driving means are arranged on machinery interior and drive antenna assembly to rotate；Rectangular waveguide, rectangular waveguide is arranged on that machinery is indoor and be disposed adjacent with microwave generator, and the microwave transmission that microwave generator is produced is to antenna assembly；Angle detection device, angle detection device is located at machinery interior；Temperature-detecting device；Controller, controller stops the rotation of antenna assembly when angle detection device detects the corresponding predetermined angular in the minimum precalculated position of the temperature that antenna assembly rotates to temperature-detecting device detects.Microwave oven according to embodiments of the present invention, can achieve orientation heating.The invention also discloses a kind of control method of microwave oven.
Description
Technical field
The present invention relates to Microwave IC field, especially relate to a kind of microwave oven and its control method.
Background technology
Existing Flat-plate microwave oven generally includes antenna assembly (or stirring sheet), coupling aperture, motor etc..This Flat-plate microwave oven
There is following problem during manufacture and use：First：Flat-plate microwave oven does not orient heating function.Second：Antenna assembly revolves
When turning heating, heating uniformity is not high.3rd：Antenna assembly orientation angle is difficult.
Take out the different chilled food of initial temperature and frozen food from refrigerator, when using rotating disk microwave oven, with stirring
Mix the Flat-plate microwave oven of piece and the Flat-plate microwave oven with antenna assembly rotates after two kinds of foods are heated simultaneously, can go out
Existing two kinds of situations：One kind is that chilled food reaches design temperature, and frozen food is not up to design temperature.Another kind is chilled food
Exceed design temperature, frozen food reaches design temperature.Thus being difficult to meet the demand of user.
Content of the invention
It is contemplated that at least solving one of technical problem present in prior art.
For this reason, it is an object of the present invention to proposing a kind of microwave oven that can orient heating.
Further object is that proposing a kind of control method of microwave oven.
The microwave oven of embodiment according to a first aspect of the present invention, including：Body of heater, is formed with cooking chamber and machine in described body of heater
Tool room；Microwave generator, it is indoor that described microwave generator is arranged on described machinery；Antenna assembly, described antenna assembly is located at institute
State culinary art indoor and rotatable around vertical direction；Driving means, described driving means are arranged on described machinery interior and drive
Described antenna assembly rotation；Rectangular waveguide, described rectangular waveguide be arranged on described machinery indoor and with described microwave generator phase
Adjacent setting, and the microwave transmission extremely described antenna assembly that described microwave generator is produced；Angle detection device, described angle inspection
Survey device and be located at described machinery interior；Temperature-detecting device, described temperature-detecting device is used for detection and multiple predetermined angulars pair
The temperature in the multiple precalculated positions answered；And controller, described controller be arranged in described body of heater and with the detection of described angle
Device is connected with described temperature-detecting device, and described controller detects described antenna assembly rotation in described angle detection device
Stop described sky traditional thread binding during to minimum with the temperature that described temperature-detecting device the detects corresponding predetermined angular in precalculated position
The rotation put, to be oriented heating.
Microwave oven according to embodiments of the present invention, is provided by rotable antenna device and angle detection device, sky
Line apparatus can rotate to that one of indoor multiple predetermined angulars of culinary art are rear to be oriented to being placed on the indoor food of culinary art
Heating, angle detection device can detect different signals during antenna assembly rotation, and controller detects according to angle
The signal of device detection controls antenna assembly to rotate to predetermined angular, so that antenna assembly accurate positioning is it is achieved that orient
The purpose of heating, the food that can make the different temperatures being placed in microwave oven can be while heated to mutually synthermal, and minimizing is excessive
Heating, improves the efficiency of heating surface, and shorten the difference heat time heating time of two kinds of foods, simultaneously energy-conservation, save time, and antenna assembly
Rotary heating mode, can lift heating uniformity.
In addition, following additional technical feature is also had according to the microwave oven of the present invention：
Further, described culinary art interior is provided with gripper shoe so that described cooking chamber is divided into epicoele and cavity of resorption, described sky
Line apparatus are arranged on the bottom surface of described cavity of resorption.Consequently facilitating food place and good to the orientation heats of food.
Specifically, described antenna assembly includes：Top board, described top board is on isosceles trapezoid and the broadside of described isosceles trapezoid
Form breach；Three side plates, described three side plates are respectively perpendicular to the two side of described top board and rear wall extends downwardly；Three bottoms
Plate, the diapire that described three base plates are respectively perpendicular to described three side plates horizontally outward extends；And circular waveguide, described circular waveguide
Upper end be fixed on described top board, the lower end of described circular waveguide passes through the diapire of described cavity of resorption and extend into described rectangular waveguide
Interior, wherein said top board, described three side plates and described three base plates are integrally formed by metal prerotation vane.By top board is formed
For isosceles trapezoid, so that antenna assembly has very strong directional radiation characteristic, and it is provided by three side plates, can press down
Microwave propagation processed, makes microwave concentrate on certain direction, is provided by base plate and can be easy to antenna assembly to be placed on culinary art indoor, and
It is extend in rectangular waveguide by circular waveguide and microwave energy is coupled to culinary art intracavity, thus ensure that antenna assembly can cooked
The purpose that indoor realization orientation of preparing food heats.
Preferably, described antenna assembly is 15 degree of -90 degree counterclockwise or inverse time around the rotation angle range of vertical direction
150 degree of -225 degree of pin.
According to some embodiments of the present invention, the plurality of predetermined angular is two and includes the first predetermined angular and second
Predetermined angular, and described microwave oven further includes：Temperature-detecting device, described temperature-detecting device is located at described Machine Room
Interior, and detect described cooking chamber on intracavity first pre-position corresponding with described first predetermined angular the first temperature and
The second temperature of second pre-position corresponding with described second predetermined angular.It is provided by temperature-detecting device, can
Improve the automaticity of microwave oven.
Specifically, described angle detection device is angular transducer, and rotates to and described first in described antenna assembly
In temperature and described second temperature during predetermined angular corresponding to lower temperature, described angular transducer sends to described controller
Detect described antenna assembly have rotated into corresponding to lower temperature in described first temperature and described second temperature described in
The detection signal of predetermined angular, so that described controller controls described driving means to stop operating.
The control method of the microwave oven of embodiment according to a second aspect of the present invention, wherein said microwave oven is according to the present invention
The microwave oven of first aspect embodiment.
The control method of microwave oven according to embodiments of the present invention, comprises the steps：S1：Rotate described antenna assembly；
S2：Determine the predetermined angular corresponding to the indoor minimum temperature of described culinary art；S3：Determine whether described antenna assembly rotates to minimum
Temperature angle, described minimum temperature angle is the described predetermined angular corresponding with minimum temperature；And S4：If described antenna
Device rotates to the predetermined angular corresponding with minimum temperature, then control described antenna assembly to stop operating, and be oriented plus
Heat.
Control method according to embodiments of the present invention it is ensured that antenna assembly can rotate to predetermined angular be oriented plus
Heat, multiple foods that can be different to temperature while heated to mutually synthermal, decrease excessive heating, improve the efficiency of heating surface, section
Can and save time.
Specifically, described antenna assembly includes：Top board, described top board is on isosceles trapezoid and the broadside of described isosceles trapezoid
Form breach；Three side plates, described three side plates are respectively perpendicular to the two side of described top board and rear wall extends downwardly；Three bottoms
Plate, the diapire that described three base plates are respectively perpendicular to described three side plates horizontally outward extends；And circular waveguide, described circular waveguide
Upper end be fixed on described top board, the lower end of described circular waveguide extend in described rectangular waveguide.By top board is formed as
Isosceles trapezoid, so that antenna assembly has very strong directional radiation characteristic, and is provided by three side plates, can suppress
Microwave propagation, makes microwave concentrate on certain direction, is provided by base plate and can be easy to antenna assembly to be placed on culinary art indoor and logical
Cross circular waveguide to extend in rectangular waveguide so that microwave energy is coupled to culinary art intracavity, thus ensure that antenna assembly can be in culinary art
The purpose of indoor realization orientation heating.
In some embodiments of the invention, the plurality of predetermined angular is two and includes the first predetermined angular and second
Predetermined angular, and described microwave oven further includes：Temperature-detecting device, described temperature-detecting device is located at described Machine Room
Interior, and detect described the first temperature T1 of the first pre-position that culinary art is indoor and described first predetermined angular is corresponding and with
Second temperature T2 of the second corresponding pre-position of described second predetermined angular.
Further, described angle detection device is angular transducer, and described angular transducer is in described antenna assembly
Export voltage U2 corresponding with the rotational angle of described antenna assembly during rotation, and rotate to the in described antenna assembly
During one predetermined angular, described angular transducer exports the first predetermined voltage U0, rotates to the second predetermined angle in described antenna assembly
When spending, described angular transducer exports the second predetermined voltage U1.
Specifically, described step S2 further includes：S21：Described temperature-detecting device detects the first temperature T1 and second
Testing result is simultaneously transferred to described controller by temperature T2, and described controller compares the first temperature T1 and second temperature T2；S22：
Work as T1<During T2, determine that the first predetermined angular corresponding to described first precalculated position is described minimum temperature angle；And S23：
Work as T1>During T2, determine that the second predetermined angular corresponding to described second precalculated position is described minimum temperature angle.
Specifically, described step S3 further includes：S31：Detect the voltage U2 of described angular transducer output；S32：Really
Whether fixed described voltage U2 is identical with the corresponding predetermined voltage of described minimum temperature angle；And S33：When described voltage U2 and institute
State the corresponding predetermined voltage of minimum temperature angle identical when, execute described step S4.
The additional aspect of the present invention and advantage will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become from reference to the description to embodiment for the accompanying drawings below
Substantially and easy to understand, wherein：
Fig. 1 is the exploded perspective view of the microwave oven according to the embodiment of the present invention；
Fig. 2 is the schematic perspective view of the microwave oven according to the embodiment of the present invention；
Fig. 3 is the exploded perspective view of the antenna assembly in the microwave oven shown in Fig. 1；
Fig. 4 is the front view of the antenna assembly in the microwave oven shown in Fig. 1；
Fig. 5 is the top view of the antenna assembly shown in Fig. 4；
Fig. 6 is the right view of the antenna assembly shown in Fig. 4；
Fig. 7 is the schematic perspective view of the antenna assembly shown in Fig. 4；
Fig. 8 is the antenna assembly in the microwave oven shown in Fig. 1, the assembling schematic diagram of rectangular waveguide, detection means and motor；
Fig. 9 is the top view of the detection means in the microwave oven shown in Fig. 1；
Figure 10 is the floor map of the microwave oven shown in Fig. 1；
Figure 11 is the anglec of rotation of the antenna assembly in the microwave oven shown in Fig. 1 is schematic top plan view when 0 degree；
Schematic top plan view when Figure 12 rotates to an angle for the antenna assembly in the microwave oven shown in Fig. 1；
Figure 13 is that the vertical view in predetermined angular in the cooking chamber according to the microwave oven of the embodiment of the present invention and precalculated position is shown
It is intended to；
Figure 14 is the flow chart of the control method of the microwave oven according to the embodiment of the present invention；
Figure 15 is the flow chart of the control method of the microwave oven according to one embodiment of the invention；With
Figure 16 is the flow chart of the control method of the microwave oven of a specific embodiment according to the present invention.
Reference：
Microwave oven 100, body of heater 1, interior furnace shell 10, cooking chamber 11, epicoele 110, cavity of resorption 111,
Microwave generator 14, antenna assembly 2, top board 20, side plate 21, base plate 22, breach 201,
Rectangular waveguide 4, angle detection device 3, sensor body 33, pin 34, temperature-detecting device 12,
Driving means 5, output shaft 50, controller 6, circular waveguide 7, motor support frame 8, gripper shoe 9,
Cap nut 13, coupling aperture 15
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " on ", D score,
The orientation of instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " or position relationship are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or dark
Show the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The restriction of the present invention.Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint are relative
Importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected；Can
To be to be mechanically connected or electrical connection；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.Additionally, in describing the invention, unless otherwise stated, " multiple " are meant that two or two
More than.
A kind of microwave oven 100 of embodiment according to a first aspect of the present invention, this microwave oven are described below with reference to Fig. 1-Figure 13
100 can carry out to the food being placed in microwave oven 100 cooking such as heating etc..
Microwave oven 100 according to embodiments of the present invention, as shown in Fig. 1-Figure 12, including：Body of heater 1, microwave generator 14, sky
Line apparatus 2, driving means 5, rectangular waveguide 4, angle detection device 3 and controller 6, wherein, are formed with cooking chamber 11 in body of heater 1
With Machine Room (not shown).Microwave generator 14 is arranged on mechanical interior and is used for producing microwave, alternatively, microwave generator 14
For magnetron.Antenna assembly 2 is located in cooking chamber 11 and rotatable around vertical direction.Driving means 5 are arranged on machinery interior
And drive antenna assembly 2 to rotate.It is indoor and be disposed adjacent with microwave generator 14 that rectangular waveguide 4 is arranged on machinery, and by microwave
The microwave transmission that generator 14 produces is to antenna assembly 2.Angle detection device 3 is located at machinery interior.Controller 6 is arranged on body of heater
In 1 and detect when antenna assembly 2 rotates to one of multiple predetermined angulars in angle detection device 3 and stop antenna assembly 2
Rotation, to be oriented heating.Specifically, driving means 5 are to drive the motor of antenna assembly 2 rotation.
In the example of the present invention, as is illustrated by figs. 11 and 12, antenna assembly 2 can rotate about the z axis, and wherein Z axis hang down respectively
Straight extend in X-axis and Y-axis and vertically, in the example of fig. 11, the anglec of rotation of antenna assembly 2 is 0 degree, Figure 12's
In example, antenna assembly 2 rotate counterclockwise certain angle about the z axis.
According to some examples of the present invention, body of heater 1 includes interior furnace shell 10 and outer furnace shell (not shown), wherein interior furnace shell 10
Inside it is formed with cooking chamber 11, between outer furnace shell and interior furnace shell 10, limit Machine Room.Certainly the invention is not restricted to this, cooking chamber 11
Can be otherwise formed in body of heater 1 with Machine Room.
Microwave generator 14 can produce microwave, and the microwave transmission that microwave generator 14 is produced by rectangular waveguide 4 is traditional thread binding to sky
Put on 2, antenna assembly 2 by microwave transmission to cooking chamber 11 so that microwave is reacted with the food being placed in cooking chamber 11
Thus heating to food.Controller 6 is known to those of ordinary skill in the art, is just not described in detail here.
In describing the invention, antenna assembly 2 is heated to the food in cooking chamber 11 and antenna assembly 2 carries out determining
To heating be represented as antenna assembly 2 by microwave transmission in cooking chamber 11 so that microwave and food react thus to food
Heated.
On the position corresponding with multiple predetermined angulars in cooking chamber 11 can accommodating food, be formed with cooking chamber 11
Multiple can accommodating food precalculated position, as shown in figure 13, in figure dashed circle for antenna assembly 2 rotate respectively to two predetermined
Schematic diagram during angle, in figure solid line circle is the schematic diagram in two corresponding with two predetermined angulars respectively precalculated positions.
Antenna assembly 2 rotate to predetermined angular heating is oriented to the food in cooking chamber 11 when, corresponding with this predetermined angular,
Can the temperature of pre-position of accommodating food can be higher than the temperature of the other positions in cooking chamber 11, thus pre- to being placed on this
The heating-up temperature positioning the food put is higher than the heating-up temperature to the food being placed on other positions.Angle detection device 3 is in sky
Can detect and send different signals during line apparatus 2 rotation, controller 6 detects according to angle detection device 3
Different signals controls the rotation of antenna assembly 2 and the rotation stopping antenna assembly 2.Corresponding with multiple predetermined angulars is multiple
The different multiple foods of temperature can be placed on precalculated position, in the following description, all as frozen food and cold with multiple foods
Illustrate as a example hiding food.
When multiple predetermined angulars are two and inclusion the first predetermined angular and the second predetermined angular, preset and work as antenna assembly
2 to rotate to the detection signal of angle detection device during the first predetermined angular 3 be the first initial signal, default revolves when antenna assembly 2
The detection signal going to angle detection device 3 during the second predetermined angular is the second initial signal.By chilled food and frozen food
It is individually positioned in first precalculated position corresponding with the first predetermined angular and corresponding with the second predetermined angular second to make a reservation for
On position, antenna assembly 2 starts the food in cooking chamber 11 is heated.
When the first precalculated position is placed with frozen food, the second precalculated position is placed with chilled food, and now controller 6 will
The output signal of angle detection device 3 is compared with the first initial signal, when this output signal is identical with the first initial signal
When, that is, represent that antenna assembly 2 is located at the first predetermined angular, now antenna assembly 2 proceeds by positioning heating.When this output signal
When differing with the first initial signal, controller 6 controls antenna assembly 2 to rotate, and during antenna assembly 2 rotates, controls
Device 6 continues to be compared the output signal of angle detection device 3 with the first initial signal, until at the beginning of this output signal and first
When beginning signal is identical, controller 6 controls antenna assembly 2 to stop operating, and now antenna assembly 2 is located at the first predetermined angular, antenna
Device 2 starts to be oriented heating to the first precalculated position.
When the first precalculated position is placed with chilled food, the second precalculated position is placed with frozen food, and now controller 6 will
The output signal of angle detection device 3 is compared with the second initial signal, when this output signal is identical with the second initial signal
When, that is, represent that antenna assembly 2 is located at the second predetermined angular, now antenna assembly 2 proceeds by positioning heating.When this output signal
When differing with the second initial signal, controller 6 controls antenna assembly 2 to rotate, and during antenna assembly 2 rotates, controls
Device 6 continues to be compared the output signal of angle detection device 3 with the second initial signal, until at the beginning of this output signal and second
When beginning signal is identical, controller 6 controls antenna assembly 2 to stop operating, and now antenna assembly 2 is located at the second predetermined angular, antenna
Device 2 starts to be oriented heating to the second precalculated position.
It should be noted that when multiple predetermined angulars are two or more, the control method of microwave oven 100 and predetermined angular
Identical for control method principle when two, just it is not described in detail here.
Microwave oven 100 according to embodiments of the present invention, is provided by rotable antenna device 2 and angle detection device
3, antenna assembly 2 can rotate to one of multiple predetermined angulars in cooking chamber 11 rear to the food being placed in cooking chamber 11
It is oriented heating, angle detection device 3 can detect different signals, controller 6 during antenna assembly 2 rotation
Antenna assembly 2 is controlled to rotate to predetermined angular according to the signal of angle detection device 3 detection, so that antenna assembly 2 positions standard
Really it is achieved that the purpose of orientation heating, can be so that the food being placed on the different temperatures in microwave oven can be while heated to identical
Temperature, reduce excessive heat, improve the efficiency of heating surface, and shorten the difference heat time heating time of two kinds of foods, energy-conservation, province simultaneously
When, and the rotary heating mode of antenna assembly 2, heating uniformity can be lifted.
Further, it is provided with gripper shoe 9 in cooking chamber 11 so that cooking chamber is divided into epicoele 110 and cavity of resorption 111, it is traditional thread binding
Put on 2 bottom surfaces being arranged on cavity of resorption 111.Consequently facilitating food place and good to the orientation heats of food.Alternatively, should
Gripper shoe 9 can be ceramic wafer.In other words, food can be placed in gripper shoe 9, and multiple precalculated position is located in gripper shoe 9, when
When antenna assembly 2 rotates to one of multiple predetermined angulars in cavity of resorption 111, can prop up to being placed on antenna assembly 2 top
The food of the corresponding pre-position on fagging 9 is oriented heating.
Specifically, as shown in Fig. 3-Fig. 7, antenna assembly 2 includes：Top board 21, three base plates 22 of 20, three side plates and circle ripple
Lead 7, wherein, top board 20 is to form jagged 201 on isosceles trapezoid and the broadside of isosceles trapezoid.Three side plates 21 are respectively perpendicular to
The two side of top board 20 and rear wall extend downwardly.The diapire that three base plates 22 are respectively perpendicular to three side plates 21 horizontally outward prolongs
Stretch.The upper end of circular waveguide 7 is fixed on top board 20, and the lower end of circular waveguide 7 passes through the diapire of cavity of resorption 111 and extend into rectangular waveguide
In 4.By top board 20 is formed as isosceles trapezoid, so that antenna assembly 2 has very strong directional radiation characteristic and logical
Cross and be provided with three side plates 21, microwave propagation can be suppressed, make microwave concentrate on certain direction, being provided by base plate 22 can be easy to
Antenna assembly 2 is placed in cooking chamber 11, and extend in rectangular waveguide 4 to be coupled to microwave energy by circular waveguide 7 and cook
Prepare food in chamber 11, thus ensure that antenna assembly 2 can be realized orienting the purpose of heating in cooking chamber 11.
In the example of fig. 1 and 2, the bottom surface of cooking chamber 11 is formed with coupling aperture 15, and screw is passed through on the top of circular waveguide 7
Cap 13 is fixed on top board 20, and circular waveguide 7 extend in rectangular waveguide 4 through coupling aperture 15, belongs to probe coupled modes, thus
By circular waveguide 7 by microwave transmission in cooking chamber 11.
Further, 20, three side plates 21 of top board and three base plates 22 are integrally formed by metal prerotation vane.Consequently facilitating
The machine-shaping of antenna assembly 2.
Specifically, antenna assembly 2 is 15 degree of -90 degree or counterclockwise counterclockwise around the rotation angle range of vertical direction
150 degree of -225 degree.
According to some embodiments of the present invention, multiple predetermined angulars are two and inclusion the first predetermined angular and second makes a reservation for
Angle, and microwave oven 100 further includes：Temperature-detecting device 12, temperature-detecting device 12 is located at machinery interior and examines respectively
Survey in the epicoele 110 of cooking chamber 11 first precalculated position corresponding with the first predetermined angular and the second predetermined angular and second pre-
Positioning puts the first temperature and the second temperature at place.In other words, temperature-detecting device 12 detection is corresponding with the first predetermined angular
First temperature of the first pre-position, and detect the second temperature of second pre-position corresponding with the second predetermined angular
Degree.Specifically, temperature-detecting device 12 can be eight furious outer temperature inductors.It is provided by temperature-detecting device 12, can carry
The automaticity of high microwave oven 100.
Further, angle detection device 3 is angular transducer, and rotates to and the first temperature and the in antenna assembly 2
In two temperature during predetermined angular corresponding to lower temperature, angular transducer 3 sends to controller 6 and antenna assembly 2 has been detected
Rotate to the detection signal with the predetermined angular corresponding to lower temperature in the first temperature and second temperature, so that controller 6 is controlled
Driving means 5 processed stop operating, to stop the rotation of antenna assembly 2.In other words, angle detection device 3 can be in antenna assembly 2
The different voltage of different anglec of rotation output.Thus can be further ensured that controller 6 is believed according to the detection of angle detection device 3
Number control antenna assembly 2 rotates to the first predetermined angle or the second predetermined angular.In the example of figure 9, angle detection device 3 wraps
Include sensor body 33 and multiple pin 34, multiple pins 34 can be connected with controller 6.
The operation principle of angular transducer 3 is：By way of partial pressure, output and the anglec of rotation of measured object electricity on year-on-year basis
Pressure.The impedance that can be become according to measured object rotation, changes output voltage, detects that voltage just can obtain the corresponding anglec of rotation
Degree.Therefore, different rotation angle just can correspond to different output voltages.
Further, microwave oven 100 includes motor support frame 8, and motor support frame 8 is located on rectangular waveguide 4 to support drive
The output shaft 50 of dynamic device 5.Thus ensure that driving means 5 fixation.
In the example of fig. 8, the upper end of circular waveguide 7 is fixed on top board 20 by cap nut 13, and the lower end of circular waveguide 7 is stretched
Enter in rectangular waveguide 4, motor support frame 8 is located on the lower surface of rectangular waveguide 4, angle detection device 3 and driving means 5 are placed
In the lower section of rectangular waveguide 4, the output shaft 50 of driving means 5 is connected through angle detection device 3 with circular waveguide 7, thus driving
Device 5 drives antenna assembly 2 to rotate.Output shaft 50 can be connected by bearing with angle detection device 3.
The control method of the microwave oven of embodiment according to a second aspect of the present invention is described below with reference to Fig. 1-Figure 16, wherein micro-
Ripple stove is the microwave oven 100 according to first aspect present invention embodiment.
The control method of microwave oven according to embodiments of the present invention, as shown in figure 14, comprises the steps：
S1：Rotary antenna device 2.
S2：Determine the predetermined angular corresponding to minimum temperature in cooking chamber 11.
S3：Determine whether antenna assembly 2 rotates to minimum temperature angle, described minimum temperature angle is and minimum temperature phase
Corresponding predetermined angular.
S4：If antenna assembly 2 rotates to the predetermined angular corresponding with minimum temperature, antenna assembly 2 is controlled to stop
Rotate, and be oriented heating.
The control method of microwave oven according to embodiments of the present invention is it is ensured that antenna assembly 2 can rotate to predetermined angular enters
Row orientation heating, multiple foods that can be different to temperature while heated to mutually synthermal, decrease excessive heating, improve heating
Efficiency, energy-conservation and saving time.
Specifically, antenna assembly 2 includes：Top board 21, three base plates 22 of 20, three side plates and circular waveguide 7, wherein, top board
20 is to form jagged 201 on isosceles trapezoid and the broadside of isosceles trapezoid.Three side plates 21 are respectively perpendicular to the both sides of top board 20
Wall and rear wall extend downwardly.The diapire that three base plates 22 are respectively perpendicular to three side plates 21 horizontally outward extends.Circular waveguide 7 upper
End is fixed on top board 20, and the lower end of circular waveguide 7 passes through the diapire of cavity of resorption 111 and extend in rectangular waveguide 4.By by top board
20 are formed as isosceles trapezoid, so that antenna assembly 2 has very strong directional radiation characteristic, and are provided by three sides
Plate 21, can suppress microwave propagation, make microwave concentrate on certain direction, be provided by base plate 22 and can be easy to antenna assembly 2 placing
In cooking chamber 11, and it is extend in rectangular waveguide 4 by circular waveguide 7 microwave energy is coupled in cooking cavity 11, thus
Ensure that antenna assembly 2 can be realized orienting the purpose of heating in cooking chamber 11.
In some embodiments of the invention, multiple predetermined angulars are two and inclusion the first predetermined angular and second makes a reservation for
Angle, and microwave oven 100 further includes：Temperature-detecting device 12, temperature-detecting device 12 is located at machinery interior and examines respectively
Survey first precalculated position corresponding with the first predetermined angular and the second predetermined angular and the second pre-position in cooking chamber 11
The first temperature T1 and second temperature T2.In other words, temperature-detecting device 12 detects first corresponding with the first predetermined angular
First temperature T1 of pre-position, and detect the second temperature of second pre-position corresponding with the second predetermined angular
T2.
Specifically, angle detection device 3 is angular transducer, and angular transducer 3 is during antenna assembly 2 rotation
Export voltage U2 corresponding with the rotational angle of antenna assembly 2, and when antenna assembly 2 rotates to the first predetermined angular, angle
Sensor 3 exports the first predetermined voltage U0, when antenna assembly 2 rotates to the second predetermined angular, angular transducer 3 output second
Predetermined voltage U1.
Wherein, step S2 further includes：
S21：Temperature-detecting device 12 detects the first temperature T1 and second temperature T2 and testing result is transferred to controller
6, controller 6 compares the first temperature T1 and second temperature T2.
S22：Work as T1<During T2, determine that the first predetermined angular corresponding to the first precalculated position is minimum temperature angle.
S23：Work as T1>During T2, determine that the second predetermined angular corresponding to the second precalculated position is minimum temperature angle.
Step S3 further includes：
S31：The voltage U2 of detection angles sensor 3 output.
S32：Determine whether voltage U2 is identical with the corresponding predetermined voltage of minimum temperature angle.
S33：When voltage U2 is identical with the corresponding predetermined voltage of minimum temperature angle, execution step S4.
In other words, as shown in figure 15, the control method of microwave oven is as follows：First, set antenna assembly 2 in the first predetermined angle
When spending, the first predetermined voltage of angle detection device 3 is U0, and sets antenna assembly 2 angle detection dress in the second predetermined angular
The second predetermined voltage putting 3 is U1.
Then two kinds of foods are individually positioned in first precalculated position corresponding with the first predetermined angular and pre- with second
Determine on the second corresponding precalculated position of angle, microwave oven 100 operation is that antenna assembly 2 starts the food in cooking chamber 11 is entered
Row heating, temperature-detecting device 12 detects the first temperature T1 and second temperature T2, and controller 6 compares T1 and T2.
Work as T1<During T2, that is, the low food of temperature is placed on the first precalculated position, and it is pre- that the high food of temperature is placed on second
Positioning is put, and angle detection device 3 detects and output voltage U2 is on controller 6, and controller 6 compares U2 and U0, works as U2=U0
When, represent that antenna assembly 2 is located at the first predetermined angular, microwave oven 100 starts orientation heating, and that is, antenna assembly 2 starts to first
Precalculated position is oriented heating.As U2 ≠ U0, controller 6 controls antenna assembly 2 to rotate, the mistake rotating in antenna assembly 2
Cheng Zhong, the output voltage U2 of angle detection device 3 is constantly compared, until U2=by controller 6 with the first predetermined voltage U0
During U0, controller 6 controls antenna assembly 2 to stop operating, and now, antenna assembly 2 is located on the first predetermined angular, microwave oven 100
Start orientation heating.
Work as T1>During T2, that is, the high food of temperature is placed on the first precalculated position, and it is pre- that the low food of temperature is placed on second
Positioning is put, and angle detection device 3 detects and output voltage U2 is on controller 6, and controller 6 compares U2 and U1, works as U2=U1
When, represent that antenna assembly 2 is located at the second predetermined angular, microwave oven 100 starts orientation heating.As U2 ≠ U1, controller 6 controls
Antenna assembly 2 rotates, and during antenna assembly 2 rotates, controller 6 is constantly by the output voltage U2 of angle detection device 3
It is compared with the second predetermined voltage U1, when U2=U1, controller 6 controls antenna assembly 2 to stop operating, now, antenna
Device 2 is located on the second predetermined angular, and microwave oven 100 starts orientation heating.
Below with reference to Figure 16 description according to the control method of the microwave oven of the specific embodiment of the invention, wherein first is made a reservation for
Angle is located at the left side of cooking chamber 11, and the second predetermined angular is located at the right side of cooking chamber 11, and multiple predetermined angulars are two, drives
Device 5 drives antenna assembly 2 to rotate.
First, when frozen food is placed in cooking chamber 11 left side, chilled food is placed on right side, sets antenna assembly 2 most preferably solid
Positioning put corresponding angle be A be antenna assembly 2 be located at the first predetermined angular when, angle detection device 3 output voltage be U0.
When chilled food is placed in cooking chamber 11 left side, frozen food is placed on right side, sets the corresponding angle of antenna assembly 2 optimum fixation position
Spend for B when being that antenna assembly 2 is located at the second predetermined angular, the voltage of angle detection device 3 output is U1, and is stored.
Then, microwave oven 100 runs, temperature T1 and right side temperature T2 on the left of temperature-detecting device 12 detection cooking chamber 11,
And compare T1 and T2.
Work as T1<During T2, it is frozen food on the left of cooking chamber, right side is chilled food, and microwave oven 100 works, and angle is examined
Survey device 3 detection and output voltage U2 is to controller 6, controller 6 compares U2 and U0.As U2=U0, driving means 5 keep stopping
Only operating condition, that is, antenna assembly 2 keep stopping operating state, microwave oven 100 starts orientation heating.Otherwise as U2 ≠ U0,
Controller 6 controls driving means 5 to start running, during during driving means 5 operating, i.e. antenna assembly 2 rotates,
The voltage U2 and voltage U0 that angle detection device 3 is constantly exported by controller 6 is compared, and as U2=U0, driving means 5 are stopped
Only operate, microwave oven 100 starts orientation heating.As U2 ≠ U0, controller 6 controls driving means 5 to remain in operation until output
When voltage U2 is equal with voltage U0, controller 6 controls driving means 5 to stop operating.
Work as T1>During T2, it is chilled food on the left of cooking chamber, right side is frozen food, and microwave oven 100 works, and angle is examined
Survey device 3 detection and output voltage U2 is to controller 6, controller 6 compares U2 and U1.As U2=U1, driving means 5 keep stopping
Only operating condition, microwave oven 100 starts orientation heating.Otherwise as U2 ≠ U1, controller 6 controls driving means 5 to start running,
During driving means 5 operating, the voltage U2 and voltage U1 that angle detection device 3 is constantly exported by controller 6 is compared
Relatively, as U2=U1, driving means 5 shut down, and microwave oven 100 starts orientation heating.As U2 ≠ U1, controller 6 controls
Driving means 5 remain in operation when output voltage U2 is equal with voltage U1, and controller 6 controls driving means 5 to stop operating.
In the description of this specification, reference term " embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features, the knot describing with reference to this embodiment or example
Structure, material or feature are contained at least one embodiment or the example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy
Point can combine in any one or more embodiments or example in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
Multiple changes, modification, replacement and modification can be carried out to these embodiments in the case of the principle of the disengaging present invention and objective, this
The scope of invention is limited by claim and its equivalent.
Claims (12)
1. a kind of microwave oven is it is characterised in that include：
Body of heater, is formed with cooking chamber and Machine Room in described body of heater；
Microwave generator, it is indoor that described microwave generator is arranged on described machinery；
Antenna assembly, it is indoor and rotatable around vertical direction that described antenna assembly is located at described culinary art；
Driving means, described driving means are arranged on described machinery interior and drive described antenna assembly rotation；
Rectangular waveguide, it is indoor and be disposed adjacent with described microwave generator that described rectangular waveguide is arranged on described machinery, and by institute
The microwave transmission stating microwave generator generation is to described antenna assembly；
Angle detection device, it is indoor that described angle detection device is located at described machinery；
Temperature-detecting device, described temperature-detecting device is used for detecting the temperature in multiple precalculated positions corresponding with multiple predetermined angulars
Degree；And
Controller, described controller be arranged in described body of heater and with described angle detection device and described temperature-detecting device phase
Even, described controller detects described antenna assembly in described angle detection device and rotates to and the detection of described temperature-detecting device
To the temperature minimum corresponding predetermined angular in precalculated position when stop the rotation of described antenna assembly, to be oriented heating.
2. microwave oven according to claim 1 is it is characterised in that described culinary art interior is provided with gripper shoe to cook described
Room of preparing food is divided into epicoele and cavity of resorption, and described antenna assembly is arranged on the bottom surface of described cavity of resorption.
3. microwave oven according to claim 2 is it is characterised in that described antenna assembly includes：
Top board, described top board is to form breach on isosceles trapezoid and the broadside of described isosceles trapezoid；
Three side plates, described three side plates are respectively perpendicular to the two side of described top board and rear wall extends downwardly；
Three base plates, the diapire that described three base plates are respectively perpendicular to described three side plates horizontally outward extends；And
Circular waveguide, the upper end of described circular waveguide is fixed on described top board, and the lower end of described circular waveguide passes through the bottom of described cavity of resorption
Wall simultaneously extend in described rectangular waveguide, and wherein said top board, described three side plates and described three base plates are by metal prerotation vane
It is integrally formed.
4. microwave oven according to claim 1 it is characterised in that described antenna assembly around vertical direction the anglec of rotation
Scope is 15 degree of -90 degree counterclockwise or 150 degree of -225 degree counterclockwise.
5. microwave oven according to claim 2 is it is characterised in that the plurality of predetermined angular is two and includes first pre-
Determine angle and the second predetermined angular, and described microwave oven further includes：
Temperature-detecting device, described temperature-detecting device is located at described machinery interior, and detects intracavity and institute in described cooking chamber
State first temperature and corresponding with described second predetermined angular of the first corresponding pre-position of the first predetermined angular
The second temperature of two pre-positions.
6. microwave oven according to claim 5 it is characterised in that described angle detection device be angular transducer, and
When described antenna assembly rotates to predetermined angular corresponding to lower temperature in described first temperature and described second temperature, institute
State angular transducer and send to described controller and described antenna assembly is detected and have rotated into and described first temperature and described the
The detection signal of the described predetermined angular corresponding to lower temperature in two temperature, so that described controller controls described driving means
Stop operating.
7. a kind of control method of microwave oven according to claim 1, comprises the steps：
S1：Rotate described antenna assembly；
S2：Determine the predetermined angular corresponding to the indoor minimum temperature of described culinary art；
S3：Determine whether described antenna assembly rotates to minimum temperature angle, described minimum temperature angle is and minimum temperature phase
Corresponding described predetermined angular；And
S4：If described antenna assembly rotates to the predetermined angular corresponding with minimum temperature, described antenna assembly is controlled to stop
Rotation stop is moved, and is oriented heating.
8. control method according to claim 7 is it is characterised in that described antenna assembly includes：
Top board, described top board is to form breach on isosceles trapezoid and the broadside of described isosceles trapezoid；
Three side plates, described three side plates are respectively perpendicular to the two side of described top board and rear wall extends downwardly；
Three base plates, the diapire that described three base plates are respectively perpendicular to described three side plates horizontally outward extends；And
Circular waveguide, the upper end of described circular waveguide is fixed on described top board, and the lower end of described circular waveguide extend into described square wave
In leading.
9. control method according to claim 8 is it is characterised in that the plurality of predetermined angular is two and includes first
Predetermined angular and the second predetermined angular, and described microwave oven further includes：
Temperature-detecting device, it is indoor that described temperature-detecting device is located at described machinery, and detects that described culinary art is indoor and described the
First temperature T1 of the first corresponding pre-position of one predetermined angular and corresponding with described second predetermined angular second
Second temperature T2 of pre-position.
10. control method according to claim 9 it is characterised in that described angle detection device be angular transducer, and
Described angular transducer exports electricity corresponding with the rotational angle of described antenna assembly during described antenna assembly rotates
Pressure U2, and when described antenna assembly rotates to the first predetermined angular, described angular transducer exports the first predetermined voltage U0,
When described antenna assembly rotates to the second predetermined angular, described angular transducer exports the second predetermined voltage U1.
11. control methods according to claim 10 are it is characterised in that described step S2 further includes：
S21：Described temperature-detecting device detects the first temperature T1 and second temperature T2 and testing result is transferred to described control
Device, described controller compares the first temperature T1 and second temperature T2；
S22：Work as T1<During T2, determine that the first predetermined angular corresponding to described first precalculated position is described minimum temperature angle；
And
S23：Work as T1>During T2, determine that the second predetermined angular corresponding to described second precalculated position is described minimum temperature angle.
12. control methods according to claim 11 are it is characterised in that described step S3 further includes：
S31：Detect the voltage U2 of described angular transducer output；
S32：Determine whether described voltage U2 is identical with the corresponding predetermined voltage of described minimum temperature angle；And
S33：When described voltage U2 is identical with the corresponding predetermined voltage of described minimum temperature angle, execute described step S4.
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| CN201210293439.9A CN103591620B (en) | 2012-08-16 | 2012-08-16 | A kind of microwave oven and its control method |
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| CN104456648B (en) * | 2014-11-24 | 2017-04-05 | 广东美的厨房电器制造有限公司 | Microwave oven |
| CN105972650A (en) * | 2016-05-05 | 2016-09-28 | 广东美的厨房电器制造有限公司 | Low-temperature microwave cooking method, low-temperature microwave cooking system and microwave heating device |
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| WO1997023756A1 (en) * | 1995-12-22 | 1997-07-03 | Daewoo Electronics Co., Ltd. | Microwave oven having a heater apparatus |
| CN1231397A (en) * | 1998-04-06 | 1999-10-13 | Lg电子株式会社 | Waveguide tube for microwave oven |
| CN101473692A (en) * | 2006-06-19 | 2009-07-01 | 松下电器产业株式会社 | Microwave heating device |
| CN102538037A (en) * | 2010-12-22 | 2012-07-04 | 松下电器产业株式会社 | Heating cooker |
| CN202813487U (en) * | 2012-08-16 | 2013-03-20 | 广东美的微波电器制造有限公司 | Microwave oven |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997023756A1 (en) * | 1995-12-22 | 1997-07-03 | Daewoo Electronics Co., Ltd. | Microwave oven having a heater apparatus |
| CN1231397A (en) * | 1998-04-06 | 1999-10-13 | Lg电子株式会社 | Waveguide tube for microwave oven |
| CN101473692A (en) * | 2006-06-19 | 2009-07-01 | 松下电器产业株式会社 | Microwave heating device |
| CN102538037A (en) * | 2010-12-22 | 2012-07-04 | 松下电器产业株式会社 | Heating cooker |
| CN202813487U (en) * | 2012-08-16 | 2013-03-20 | 广东美的微波电器制造有限公司 | Microwave oven |
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