CN106658807B - Method for heating and controlling, device and microwave oven - Google Patents
Method for heating and controlling, device and microwave oven Download PDFInfo
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- CN106658807B CN106658807B CN201710034006.4A CN201710034006A CN106658807B CN 106658807 B CN106658807 B CN 106658807B CN 201710034006 A CN201710034006 A CN 201710034006A CN 106658807 B CN106658807 B CN 106658807B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
- H05B6/68—Circuits for monitoring or control
- H05B6/687—Circuits for monitoring or control for cooking
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- 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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- Electromagnetism (AREA)
- Electric Ovens (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Abstract
The invention proposes a kind of method for heating and controlling, are used for microwave oven, and microwave oven includes that heating tube and microwave generating apparatus start heating tube, and heated when receiving the instruction of microwave barbecue combination function with the first power P 1；Real time temperature T1 in the cavity of real-time detection microwave oven；Judge real time temperature T1 whether within the scope of pre-set target temperature；When real time temperature T1 is within the scope of pre-set target temperature, the input power P2 of heating tube and the rated power P3 of microwave generating apparatus are obtained；Calculate the general power P0 of the input power P2 of heating tube and the rated power P3 of microwave generating apparatus.Judge whether general power P0 is less than the total rated power P of microwave oven；When general power P0 is less than the total rated power P of microwave oven, starts microwave generating apparatus, heated jointly with heating tube.According to the technical solution of the present invention, it can be realized microwave barbecue combination function, reduce the cooking time of microwave oven.
Description
Technical field
The present invention relates to household appliance design fields, in particular to a kind of method for heating and controlling, Yi Zhongjia
Heat control device and a kind of microwave oven.
Background technique
Currently, microwave oven is the abbreviation of the micro-wave oven with baking function, it is double with microwave heating and barbecue culinary art
Function has many advantages, such as that the thermal efficiency is high, safety is good, becomes one of kitchen appliance staple product.
And in the related art, since microwave power and roasting power are larger, while opening microwave and baking function pair
Circuit requirement is higher, and therefore, most of product microwave and baking function are single use currently on the market, or a period of time
Microwave heating, a period of time barbecue heating.Meanwhile microwave oven roasting power on the market can not be adjusted at present, can only be passed through
The mode of " open, stop " heating tube controls temperature, and when microwave oven internal temperature reaches setting value, heating tube stops working；
When microwave oven internal temperature is reduced to lower limit, and starts heating tube and heated, and uses " open, stop " heating tube mode tune
Whole temperature, temperature fluctuation is big, in addition, the high-power operation of heating tube is not needed when maintaining the temperature inside the box constant, this " one
Open standard-sized sheet, a Guan Quanguan " control mode cause the waste of the energy.
Specifically, the control mode of microwave oven temperature currently on the market is broadly divided into mechanical temperature control type mode and electronics
Two kinds of formula temperature control.Wherein, the most commonly used is bimetal chip thermostats for mechanical control mode, and electronic type temperature control is utilized and integrated
Circuit and thermistor control temperature.As shown in the schematic diagram of Fig. 1 mechanical temp controlled device, using under bimetal leaf different temperatures
Expansion rate difference realizes temperature control；As shown in the schematic diagram of Fig. 2 electronic temperature control device, system for detecting temperature is constantly periodically examined
Current Temperatures are surveyed, and is sent to display and shows, stop heating after reaching predetermined value and show Current Temperatures；Under temperature drops to
Restart heating in limited time.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, one object of the present invention, is to propose a kind of method for heating and controlling.
Another object of the present invention is to propose a kind of heating control apparatus.
Another object of the present invention is to propose a kind of microwave oven.
In view of this, a purpose according to the present invention, the invention proposes a kind of method for heating and controlling, roasting for microwave
Case, microwave oven includes heating tube and microwave generating apparatus, when receiving the instruction of microwave barbecue combination function, starting heating
Pipe, and heated with the first power P 1；Real time temperature T1 in the cavity of real-time detection microwave oven；Judging real time temperature T1 is
It is no to reach the first preset temperature T0；When real time temperature T1 reaches the first preset temperature T0, the heating power of heating tube is reduced；It obtains
The rated power P3 of input power P2 and microwave generating apparatus after taking heating tube to reduce；Calculate heating tube input power P2 with
The general power P0 of the rated power P3 of microwave generating apparatus.Judge whether general power P0 is less than the total rated power P of microwave oven；
When general power P0 is less than the total rated power P of microwave oven, starts microwave generating apparatus, heated jointly with heating tube.
Method for heating and controlling provided by the invention, after receiving microwave barbecue combination function, in advance start heating tube with
First power P 1 is heated, also, the real time temperature T1 in real-time detection microwave oven, when real time temperature T1 reaches first in advance
If when temperature T0, reducing the heating power of heating tube, and obtains input power P2 and microwave after heating tube reduction power and occur
The rated power P3 of device, also, calculate current heated tube input power P2 and microwave generating apparatus rated power P3 it
General power P0 is compared by the general power P0 of sum with the total rated power P of microwave oven later, when general power P0 is less than micro-
When the total rated power P of wave oven, start microwave generating apparatus, heated jointly with heating tube, on the contrary, when general power P0 is greater than
Or equal to microwave oven total rated power P when, then continue individually heated with heating tube, and then ensure heating tube with it is micro-
Electrical Safety when wave generating device is opened jointly, also, realize microwave generating apparatus and heated jointly with heating tube, Jin Erji
The earth reduces the cooking time of microwave oven, simultaneously as heating tube maintains temperature only to need very small heating power, because
This is gradually decreased heating tube by the first power P 1 after real time temperature T1 reaches the first preset temperature T0 in microwave oven, with
Lesser input power P2 maintains the temperature in microwave oven, and can be effectively prevented from heating tube constantly " open, stop " leads to relay
Device frequent movement, and then the physical life of heating tube is influenced, also, heated only with lesser input power P2, it can
It is effectively energy saving, improve the usage experience of user.
In addition, the method for heating and controlling in above-described embodiment provided by the invention can also have following supplementary technology special
Sign:
In the above-mentioned technical solutions, it may be preferable that further include: when receiving the instruction of microwave barbecue combination function, timing is cooked
It prepares food time t1；Judge whether cooking time t1 reaches default cooking time t0；When cooking time t1 reaches default cooking time
T0 stops heating.
In the technical scheme, cooking time t0, and timing cooking time t1 are first preset, when cooking time t1 reaches default
T0 when cooking time, heating tube stop heating with microwave generating apparatus, and then can be cooked for different food materials using different
It prepares food time t1, it is ensured that various food materials can obtain heating time appropriate, further, it is possible to which user is avoided to forget microwave oven just
In culinary art food materials, and causes microwave oven to heat for a long time and cause security risk.
In any of the above-described technical solution, it may be preferable that judge whether real time temperature T1 reaches the step of the first preset temperature T0
Suddenly, it specifically includes: calculating the temperature difference e of real time temperature T1 and the first preset temperature T0；Judge whether temperature difference e is less than default temperature
Spend poor Δ T；When temperature difference e is less than preset temperature difference Δ T, that is, it is judged as that real time temperature T1 reaches the first preset temperature T0.
In the technical scheme, by preset temperature difference Δ T, and it is pre- to calculate the real time temperature T1 and first in microwave oven
If the temperature difference e of temperature T0, as temperature difference e Δ T poor less than the first preset temperature, then it is judged as that real time temperature T1 reaches first
Preset temperature T0, the decision procedure can efficiently control the real time temperature T1 in microwave oven, can be avoided due to heating tube
Thermal inertia, make real time temperature T1 in microwave oven beyond preset temperature, and then ensure that microwave oven can be controlled accurately
Temperature improves the usage experience of user.
In any of the above-described technical solution, it may be preferable that the step of reducing the heating power of heating tube, specifically include: passing through
The differential equationCalculating temperature difference change rate ec, according to temperature difference e and difference variation rate ec as input quantity, use is two-way
The power of SCR control heating tube reduces；Wherein, t is the time required for generating temperature difference e.
In the technical solution kind, pass through the differential equationCalculating temperature difference change rate ec, wherein t is generation temperature difference e institute
Time needed, and according to temperature difference e and difference variation rate ec as input quantity, pass through fuzzy PID algorithm and using it is two-way can
The input power P2 for controlling silicon real-time control heating tube can be realized and be heated to heating tube due to the copped wave principle of bidirectional triode thyristor
The electrodeless adjustment of power, heating tube is first heated by biggish first power P 1, when real time temperature T1 is quick in microwave oven
After reaching preset temperature range, heating tube is gradually decreased by the first power P 1 to less than the input power P2 of the first power P 1 continues
Heating, and then avoid heating tube from constantly opening, stop the influence to relay life, while temperature control is more accurate, also, reduce
Energy consumption.
In any of the above-described technical solution, it may be preferable that the step of power of heating tube is controlled using bidirectional triode thyristor, specifically
It include: using temperature difference e and difference variation rate ec as input quantity, after fuzzy PID algorithm operation, output control pulse is controlled
The turn-on time of bidirectional triode thyristor controls the electric current of heating tube by controlling silicon-controlled turn-on time, gradually decreases heating tube
Heating power.
In the technical scheme, by PID fuzzy algorithmic approach, according to temperature difference e and difference variation rate ec, output control pulse
The turn-on time of bidirectional triode thyristor is controlled, and controls the electric current of heating tube by controlling silicon-controlled turn-on time, and then adjust
The heating power of heating tube, also, bidirectional triode thyristor is controlled by PID fuzzy algorithmic approach, can be realized temperature difference e compared with
When big, the first preset temperature T0 is quickly approached；When temperature difference e is smaller, slowly adjust to the first preset temperature T0, so that
The heating power of heating tube is in operating state always, and thermal inertia is overcome to influence, and temperature control deviation is small, so avoid due to
The thermal inertia of heating tube, temperature fluctuation is big, ensure that the accurate temperature control of microwave oven, and then improves the performance of microwave oven.
Another purpose according to the present invention, the invention proposes a kind of heating control apparatus, are used for microwave oven, microwave
Oven includes heating tube and microwave generating apparatus, comprising: the first receiving unit is instructed for receive capabilities；First heating unit,
For starting heating tube, and heated with the first power P 1 when receiving the instruction of microwave barbecue combination function；First detection
Unit, for real time temperature T1 in the cavity of real-time detection microwave oven；First judging unit, for judging that real time temperature T1 is
It is no to reach the first preset temperature T0；First acquisition unit, for obtaining and adding when real time temperature T1 reaches the first preset temperature T0
The input power P2 of the heat pipe and rated power P3 of microwave generating apparatus；First computing unit, for calculating the input of heating tube
The general power P0 of the rated power P3 of power P 2 and microwave generating apparatus；Second judgment unit, for whether judging general power P0
Less than the total rated power P of microwave oven；Second heating unit, for starting micro- when general power P0 is less than total rated power P
Wave generating device heats jointly with heating tube.
Heating control apparatus provided by the invention, after receiving microwave barbecue combination function, in advance start heating tube with
First power P 1 is heated, also, the real time temperature T1 in real-time detection microwave oven, when real time temperature T1 reaches first in advance
If when temperature T0, reducing the heating power of heating tube, and obtains input power P2 and microwave after heating tube reduction power and occur
The rated power P3 of device, also, calculate current heated tube input power P2 and microwave generating apparatus rated power P3 it
General power P0 is compared by the general power P0 of sum with the total rated power P of microwave oven later, when general power P0 is less than micro-
When the total rated power P of wave oven, start microwave generating apparatus, heated jointly with heating tube, on the contrary, when general power P0 is greater than
Or equal to microwave oven total rated power P when, then continue individually heated with heating tube, and then ensure heating tube with it is micro-
Electrical Safety when wave generating device is opened jointly, also, realize microwave generating apparatus and heated jointly with heating tube, Jin Erji
The earth reduces the cooking time of microwave oven, simultaneously as heating tube maintains temperature only to need very small heating power, because
This is gradually decreased heating tube by the first power P 1 after real time temperature T1 reaches the first preset temperature T0 in microwave oven, with
Lesser input power P2 maintains the temperature in microwave oven, and can be effectively prevented from heating tube constantly " open, stop " leads to relay
Device frequent movement, and then the physical life of heating tube is influenced, also, heated only with lesser second power, Neng Gouyou
It imitates energy saving, improves the usage experience of user.
In the above-mentioned technical solutions, it is preferable that further include: the second receiving unit, for receiving default cooking time t0；The
Two detection units, for detecting cooking time t1；Third judging unit, for judging whether cooking time t1 reaches default culinary art
Time t0；First control unit, for controlling the first heating unit when judging that cooking time t1 reaches default cooking time t0
Heating tube is closed, and the second heating unit of control closes microwave generating apparatus, to stop heating.
In the technical scheme, cooking time t0, and timing cooking time t1 are first preset, when cooking time t1 reaches default
T0 when cooking time, heating tube stop heating with microwave generating apparatus, and then can be cooked for different food materials using different
It prepares food the time, it is ensured that various food materials can obtain heating time appropriate, further, it is possible to which user is avoided to forget microwave oven
Food materials are cooked, and causes microwave oven to heat for a long time and causes security risk.
In any of the above-described technical solution, it is preferable that the first judging unit includes: second acquisition unit, obtains default temperature
Spend poor Δ T；Second computing unit, for calculating the temperature difference e of real time temperature T1 and the first preset temperature T0；4th judgement is single
Member, judges whether temperature difference e is less than or equal to preset temperature difference Δ T；When the 4th judging unit judges that temperature difference e is less than or equal to
When preset temperature difference Δ T, first acquisition unit obtains the input power P2 of heating tube and the rated power P3 of microwave generating apparatus.
In the technical scheme, by preset temperature difference Δ T, and it is pre- to calculate the real time temperature T1 and first in microwave oven
If the temperature difference e of temperature T0, as temperature difference e Δ T poor less than the first preset temperature, then it is judged as that real time temperature T1 reaches first
Preset temperature T0, the decision procedure can efficiently control the real time temperature T1 in microwave oven, can be avoided due to heating tube
Thermal inertia, make real time temperature T1 in microwave oven beyond the first preset temperature T0, and then improve the temperature control of microwave oven
Precision improves the usage experience of user.
In any of the above-described technical solution, it may be preferable that further include: third acquiring unit obtains required for generating temperature difference e
Time t；Second control unit, for passing through the differential equationCalculating temperature difference change rate ec, according to the temperature difference e
With the difference variation rate ec, the input power P2 of the heating tube is reduced by bidirectional triode thyristor.
In the technical solution kind, pass through the differential equationCalculating temperature difference change rate ec, wherein t is generation temperature difference e institute
Time needed, and according to temperature difference e and difference variation rate ec as input quantity, pass through fuzzy PID algorithm and using it is two-way can
The power of control silicon real-time control heating tube can be realized due to the copped wave principle of bidirectional triode thyristor to heating tube heating power
Electrodeless adjustment, heating tube first is heated by biggish first power P 1, when in microwave oven real time temperature T1 be rapidly achieved it is pre-
If after temperature range, heating tube is gradually decreased by the first power P 1 to less than the input power P2 continuous heating of the first power P 1,
And then it avoids heating tube from constantly opening, stop the influence to relay life, while temperature control is more accurate, also, reduces energy
Consumption.
In any of the above-described technical solution, it may be preferable that the second control unit passes through bidirectional triode thyristor real-time control heating tube
Power specifically include: using temperature difference e and difference variation rate ec as input quantity, the integrated circuit for passing through fuzzy PID algorithm is transported
After calculation, output control pulse controls the turn-on time of bidirectional triode thyristor, controls heating tube by controlling silicon-controlled turn-on time
Electric current, gradually decrease the power of heating tube.
In the technical scheme, by PID fuzzy algorithmic approach, according to temperature difference e and difference variation rate ec, output control pulse
The turn-on time of bidirectional triode thyristor is controlled, and controls the electric current of heating tube by controlling silicon-controlled turn-on time, and then adjust
The heating power of heating tube, also, bidirectional triode thyristor is controlled by PID fuzzy algorithmic approach, can be realized temperature difference e compared with
When big, the first preset temperature T0 is quickly approached；When temperature difference e is smaller, slowly adjust to the first preset temperature T0, so that
The heating power of heating tube is in operating state always, and thermal inertia is overcome to influence, and temperature control deviation is small, so avoid due to
The thermal inertia of heating tube, temperature fluctuation is big, and then improves the performance of microwave oven.
Another purpose according to the present invention, the invention also provides a kind of microwave ovens, including such as any technical solution
Described in microwave oven heating control apparatus.
Microwave oven provided by the invention, because being filled comprising microwave oven computer heating control described in any of the above-described technical solution
It sets, therefore, has whole beneficial effects of microwave oven heating control apparatus described in any of the above-described technical solution, herein
It does not do and states one by one.
In the above-mentioned technical solutions, it is preferable that further include: cavity is provided with opening；The opening of cavity is arranged in door body
Place, and be adapted with opening；Control panel is arranged side by side with door body；Magnetron is arranged in cavity side；At least one heating
Pipe is arranged at the top of cavity；And control circuit, for controlling real time temperature T1 in microwave oven.
In the technical scheme, by the way that at least one heating tube is arranged at the top of cavity, magnetron is set in cavity side,
To realize the microwave heating function and/or barbecue heating function of microwave oven.
In any of the above-described technical solution, it is preferable that control panel includes: light-emitting diode display, is located at control panel top；
Temperature input keyboard is located at below light-emitting diode display；Functional select switch is located at below temperature input keyboard；Menu key is located at
Below functional select switch.
In the technical scheme, oven related data is shown by light-emitting diode display, such as: it is real time temperature in oven, pre-
If target temperature, cooking time, default cooking time etc.；Pre-set target temperature is keyed in by temperature input keyboard；Function selection is opened
Pass can at least select microwave function, baking function and microwave barbecue combination function；It is selected by Menu key according to cooked food materials
Corresponding menu.
In any of the above-described technical solution, it is preferable that further include: transformer is located at below magnetron；Fan, setting exist
Transformer side.
In the technical scheme, transformer is set below magnetron, is provided accordingly for electric elements in microwave oven
Voltage, and cooled down by fan to electric elements in microwave oven.
Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention
Recognize.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 shows the schematic diagram of mechanical temp controlled device in the related technology；
Fig. 2 shows the schematic diagrams of electronic temperature control device in the related technology；
Fig. 3 shows the control flow chart of the method for heating and controlling of one embodiment of the present of invention offer；
Fig. 4 show another embodiment of the present invention provides method for heating and controlling control flow chart；
Fig. 5 show another embodiment of the present invention provides method for heating and controlling control flow chart；
Fig. 6 shows the schematic diagram of the heating control apparatus of one embodiment of the present of invention offer；
Fig. 7 show another embodiment of the present invention provides heating control apparatus schematic diagram；
Fig. 8 shows the circuit structure diagram of the heating control apparatus of one embodiment of the present of invention offer；
Fig. 9 shows the structure chart of fuzzy PID algorithm in the heating control apparatus of one embodiment of the present of invention offer；
Figure 10 shows the temperature-control circuit figure in the heating control apparatus of one embodiment of the present of invention offer；
Figure 11 shows the microwave oven structural schematic diagram of one embodiment of the present of invention offer；
Figure 12 shows the main view of microwave oven as shown in Figure 7.
Wherein, the corresponding relationship in Figure 11 and Figure 12 between appended drawing reference and component names are as follows:
1 microwave oven, 10 cavitys, 102 heating tubes, 104 microwave generating apparatus, 106 transformers, 108 fans, 11 door body,
12 control panels, 122LED display, 124 temperature input keyboards, 126 functional select switches, 128 Menu key.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 3 shows the control flow chart of the method for heating and controlling of the microwave oven 1 of one embodiment of the present of invention offer.
Step 302, receive the instruction of microwave oven combination function, carry out step 304；
Step 304, start heating tube and heated with the first power P 1；
Step 306, the real time temperature T1 in real-time detection microwave oven；
Step 308, judge whether real time temperature T1 reaches the first preset temperature T0, when the judgment is no, carry out step
310, when the judgment is yes, execute step 312；
Step 310, heating tube continuous heating；
Step 312, the heating power of heating tube is reduced；
Step 314, heating tube input power P2 and microwave generating apparatus rated power P3 is obtained, step 316 is executed；
Step 316, the sum of P2 and P3 P0 are calculated；
Step 318, judge whether P0 is less than microwave oven general power, when the judgment is yes, carry out step 320, work as judgement
When being no, step 312 is carried out；
Step 320, starting microwave generating apparatus heats jointly with heating tube.
The method for heating and controlling of microwave oven 1 provided by the invention opens in advance after receiving microwave barbecue combination function
Dynamic heating tube 102 is heated with the first power P 1, also, detects the real time temperature T1 in microwave oven 1, as real time temperature T1
When reaching the first preset temperature T0, the heating power of heating tube is reduced, and obtain heating tube 102 to reduce the input power after power
The rated power P3 of P2 and microwave generating apparatus, also, calculate the input power P2 and microwave generating apparatus of current heated tube 102
The general power P0 of the sum of rated power P3 general power P0 is compared with the total rated power P of microwave oven 1 later, when
When general power P0 is less than the total rated power P of microwave oven 1, start microwave generating apparatus 104, heated jointly with heating tube 102,
On the contrary, then continuing individually to carry out with heating tube 102 when general power P0 is greater than or equal to the total rated power P of microwave oven 1
Heating, and then ensure Electrical Safety when heating tube 102 and microwave generating apparatus 104 are opened jointly, also, realize microwave
Generating device 104 and heating tube 102 heat jointly, and then greatly reduce the cooking time of microwave oven 1, simultaneously as
Heating tube maintains temperature only to need very small heating power, and therefore, it is default to reach first by real time temperature T1 in microwave oven
After temperature T0, heating tube is gradually decreased by the first power P 1, the temperature in microwave oven, energy are maintained with lesser input power
Enough being effectively prevented from heating tube constantly " open, stop " leads to relay frequent movement, and then influences the physical life of heating tube, and
And heated only with lesser input power P2, it can be effectively energy saving, improve the usage experience of user.
Fig. 4 show another embodiment of the present invention provides microwave oven 1 method for heating and controlling control flow chart.
Step 402, receive the instruction of microwave oven combination function, carry out step 404；
Step 404, start heating tube and heated with the first power P 1；
Step 406, the real time temperature T1 in real-time detection microwave oven；
Step 408, judge whether real time temperature T1 reaches pre-set target temperature range, when the judgment is no, carry out step
410, when the judgment is yes, carry out step 412；
Step 410, heating tube continuous heating；
Step 412, the heating power of heating tube is reduced；Step 414, heating tube input power P2 is obtained to fill with microwave
Set rated power P3；
Step 416, the sum of P2 and P3 P0 are calculated；
Step 418, judge whether P3 is less than microwave oven general power, when the judgment is yes, carry out step 420, work as judgement
When being no, step 412 is carried out；
Step 420, starting microwave generating apparatus heats jointly with heating tube.Or
Step 422, receive microwave or baking function instruction；
Step 424, start microwave generating apparatus or heating tube is heated；
Step 426, judge whether to reach stop condition, wherein preferably, preset cooking time, judge that cooking time is
It is no to reach default cooking time；
Step 425, microwave generating apparatus or heating tube heat simultaneously.
The method for heating and controlling of microwave oven 1 provided by the invention opens in advance after receiving microwave barbecue combination function
Dynamic heating tube 102 is heated with the first power P 1, also, detects the real time temperature T1 in microwave oven 1, as real time temperature T1
When reaching within the scope of pre-set target temperature, the heating power of heating tube is reduced, the input power P2 of heating tube 102 is examined
It surveys, also, calculates the general power of the sum of the input power P2 of current heated tube 102 and the rated power P3 of microwave generating apparatus
General power P0 is compared by P0 with the total rated power P of microwave oven 1 later, when general power P0 is less than microwave oven 1
When total rated power P, start microwave generating apparatus 104, heated jointly with heating tube 102, on the contrary, be greater than as general power P0 or
Equal to microwave oven 1 total rated power P when, then continue individually to be heated with heating tube 102, and then ensure heating tube
Electrical Safety when 102 unlatching common with microwave generating apparatus 104, also, realize microwave generating apparatus 104 and heating tube
102 common heating, and then the cooking time of microwave oven 1 is greatly reduced, improve the usage experience of user.Or
When receiving microwave or baking function instructs, starts corresponding microwave generating apparatus or heating tube is heated,
When reaching stop condition, wherein preferably, cooking time is preset, judges whether cooking time reaches default cooking time, when
When judgement reaches, heating tube stops heating with microwave generating apparatus.
As Fig. 5 show another embodiment of the present invention provides microwave oven 1 method for heating and controlling control flow
Figure.
Step 502, receive the instruction of microwave oven combination function, carry out step 504；
Step 504, start heating tube and heated with the first power P 1；
Step 506, the real time temperature T1 in real-time detection microwave oven；
Step 508, cooking time t1 is calculated；
Step 510, judge whether t1 reaches the first preset temperature T0, when the judgment is yes, heating tube stops heating, knot
Beam carries out step 512 when the judgment is no
Step 512, judge whether real time temperature T1 reaches the first preset temperature T0, when the judgment is no, carry out step
514, when the judgment is yes, carry out step 516；
Step 514, heating tube continuous heating；
Step 516, heating tube heating power is reduced；
Step 518, heating tube input power P2 and microwave generating apparatus rated power P3 is obtained；
Step 520, the sum of P2 and P3 P0 are calculated；
Step 522, judge whether P0 is less than microwave oven general power P, when the judgment is yes, carry out step 524, work as judgement
When being no, step 516 is repeated；
Step 524, starting microwave generating apparatus heats jointly with heating tube；
Step 526, judge whether t1 reaches default cooking time t1 again.Or
Step 530, receive microwave or baking function instruction；
Step 532, start microwave generating apparatus or heating tube is heated；
Step 534, judge whether to reach stop condition, wherein preferably, preset cooking time, judge that cooking time is
It is no to reach default cooking time；
Step 536, microwave generating apparatus or heating tube continuous heating.
The method for heating and controlling of microwave oven 1 provided by the invention opens in advance after receiving microwave barbecue combination function
Dynamic heating tube 102 is heated with the first power P 1, also, detects the real time temperature T1 in microwave oven 1, as real time temperature T1
When reaching the first preset temperature T0, the heating power of heating tube is reduced, and obtain heating tube 102 to reduce the input power after power
The rated power P3 of P2 and microwave generating apparatus, also, calculate the input power P2 and microwave generating apparatus of current heated tube 102
The general power P0 of the sum of rated power P3 general power P0 is compared with the total rated power P of microwave oven 1 later, when
When general power P0 is less than the total rated power P of microwave oven 1, start microwave generating apparatus 104, heated jointly with heating tube 102,
On the contrary, then continuing individually to carry out with heating tube 102 when general power P0 is greater than or equal to the total rated power P of microwave oven 1
Heating, and then ensure Electrical Safety when heating tube 102 and microwave generating apparatus 104 are opened jointly, also, realize microwave
Generating device 104 and heating tube 102 heat jointly, and then greatly reduce the cooking time of microwave oven 1, simultaneously as
Heating tube maintains temperature only to need very small heating power, and therefore, it is default to reach first by real time temperature T1 in microwave oven
After temperature T0, heating tube is gradually decreased by the first power P 1, the temperature in microwave oven is maintained with lesser input power P2,
Heating tube constantly " open, stop ", which can be effectively prevented from, leads to relay frequent movement, and then influences the physical life of heating tube, and
And heated only with lesser second power, it can be effectively energy saving, the usage experience of user is improved, also,
During heating, timing cooking time t1；Judge whether cooking time t1 reaches default cooking time t0；As cooking time t1
When reaching default cooking time t0, stop heating.By presetting cooking time t0, and timing cooking time t1, work as cooking time
T0 when t1 reaches default cooking time, heating tube stop heating with microwave generating apparatus, and then can adopt for different food materials
With different cooking time t0, it is ensured that various food materials can obtain heating time appropriate, further, it is possible to which user is avoided to forget
Microwave oven 1 is cooking food materials, and microwave oven 1 is caused to be heated for a long time to generation security risk.Also, further
The step of whether real time temperature T1 reaches the first preset temperature T0 judged, is specifically included for ground: it is pre- to calculate real time temperature T1 and first
If the temperature difference e of temperature T0；Judge temperature difference e Δ T whether poor less than the first preset temperature；When temperature difference e is less than preset temperature
When poor Δ T, that is, it is judged as that real time temperature T1 reaches the first preset temperature T0.By preset temperature difference Δ T, and calculate microwave oven
The temperature difference e of real time temperature T1 and the first preset temperature T0 in 1 then judge when temperature difference e is less than preset temperature difference Δ T
Reach the first preset temperature T0 for real time temperature T1, which can efficiently control the real time temperature in microwave oven 1
T1 can be avoided the thermal inertia due to heating tube 102, make the real time temperature T1 in microwave oven 1 beyond preset temperature, Jin Erti
The temperature-controlled precision for having risen microwave oven 1 improves the usage experience of user.
Further, it the step of reducing the heating power of heating tube, specifically includes: passing through the differential equationCalculate temperature
Poor change rate ec, according to temperature difference e and difference variation rate ec as input quantity, using bidirectional triode thyristor control heating tube 102
Power reduces；Wherein, t is the time required for generating temperature difference e.Pass through the differential equationCalculating temperature difference change rate ec,
In, t is the time required for generating temperature difference e, and passes through fuzzy as input quantity according to temperature difference e and difference variation rate ec
Algorithm simultaneously can be realized using the power of bidirectional triode thyristor real-time control heating tube 102 due to the copped wave principle of bidirectional triode thyristor
To the electrodeless adjustment of 102 heating power of heating tube, heating tube 102 is first heated by biggish first power P 1, when microwave is roasting
After real time temperature T1 is rapidly achieved preset temperature range in case 1, heating tube 102 is gradually decreased to less than first by the first power P 1
The input power P2 continuous heating of power P 1, and then avoid heating tube 102 from constantly opening, stop the influence to relay life, simultaneously
Temperature control is more accurate, also, reduces energy consumption.
Further, using the power of bidirectional triode thyristor control heating tube 102 the step of, specifically include: by temperature difference e and
Difference variation rate ec is as input quantity, and after fuzzy PID algorithm operation, output control pulse controls the conducting of bidirectional triode thyristor
Time controls the electric current of heating tube 102 by controlling silicon-controlled turn-on time, gradually decreases the heating power of heating tube 102.
By PID fuzzy algorithmic approach, according to temperature difference e and difference variation rate ec, when output control pulse controls the conducting of bidirectional triode thyristor
Between, and the electric current by controlling silicon-controlled turn-on time control heating tube 102, and then the heating power of heating tube 102 is adjusted,
Also, bidirectional triode thyristor is controlled by PID fuzzy algorithmic approach, can be realized when temperature difference e is larger, quickly approach first
Preset temperature T0；It when temperature difference e is smaller, slowly adjusts to the first preset temperature T0, so that the heating function of heating tube 102
Rate is in operating state always, and thermal inertia is overcome to influence, and temperature control deviation is small, and then avoids the heat due to heating tube 102
Inertia, temperature fluctuation is big, and then improves the performance of microwave oven 1.
As shown in fig. 6, embodiment according to the second aspect of the invention, the invention proposes a kind of heating control apparatus, use
In microwave oven, microwave oven includes heating tube and microwave generating apparatus, comprising: the first receiving unit 602 is used for receive capabilities
Instruction；First heating unit 604, for starting the heating tube of microwave oven 1 when receiving the instruction of microwave barbecue combination function
102, and heated with the first power P 1；First detection unit 606, for real in the cavity 10 of real-time detection microwave oven 1
Shi Wendu T1；First judging unit 608, for judging whether real time temperature T1 reaches the first preset temperature T0；First obtains list
Member 610, input power P2 and microwave for when real time temperature T1 reaches the first preset temperature T0, obtaining heating tube 102 are sent out
The rated power P3 of generating apparatus；First computing unit 612, the input power P2 for calculating heating tube 102 are filled with microwave
The general power P0 of the rated power P3 set；Second judgment unit 614, for judging whether general power P0 is less than microwave oven 1
Total rated power P；Second heating unit 616, for when general power P0 is less than total rated power P, starting microwave to be filled
104 are set, is heated jointly with heating tube 102.
Heating control apparatus provided by the invention starts heating tube 102 after receiving microwave barbecue combination function in advance
It is heated with the first power P 1, also, the real time temperature T1 in real-time detection microwave oven 1, when real time temperature T1 reaches the
When one preset temperature T0, reduce the heating power of heating tube, and obtain heating tube 102 reduce power after input power P2 with it is micro-
The rated power P3 of wave generating device, also, calculate current heated tube 102 input power P2 and microwave generating apparatus it is specified
General power P0 is compared with the total rated power P of microwave oven 1 later, works as general power by the general power P0 of the sum of power P 3
When P0 is less than the total rated power P of microwave oven 1, start microwave generating apparatus 104, is heated jointly with heating tube 102, on the contrary
Then continue individually to be added with heating tube 102 when general power P0 is greater than or equal to the total rated power P of microwave oven 1 in ground
Heat, and then ensure Electrical Safety when heating tube 102 and microwave generating apparatus 104 are opened jointly, also, realize microwave hair
Generating apparatus 104 and heating tube 102 heat jointly, and then greatly reduce the cooking time of microwave oven 1, simultaneously as plus
Heat pipe maintains temperature only to need very small heating power, and therefore, real time temperature T1 reaches the first default temperature in microwave oven
After spending T0, heating tube is gradually decreased by the first power P 1, the temperature in microwave oven, energy are maintained with lesser input power P2
Enough being effectively prevented from heating tube constantly " open, stop " leads to relay frequent movement, and then influences the physical life of heating tube, and
And heated only with lesser second power, it can be effectively energy saving, improve the usage experience of user.
As shown in fig. 7, in one embodiment of the invention, it is preferable that the invention proposes a kind of heating control apparatus,
For microwave oven, microwave oven includes heating tube and microwave generating apparatus, comprising: the first receiving unit 702, for receiving function
It can instruction；First heating unit 704, for starting the heating of microwave oven 1 when receiving the instruction of microwave barbecue combination function
Pipe 102, and heated with the first power P 1；First detection unit 706, in the cavity 10 of real-time detection microwave oven 1
Real time temperature T1；First judging unit 708, for judging whether real time temperature T1 reaches the first preset temperature T0；First obtains
Unit 710, for obtaining the input power P2 and microwave of heating tube 102 when real time temperature T1 reaches the first preset temperature T0
The rated power P3 of generating device；First computing unit 712, input power P2 and microwave for calculating heating tube 102 occur
The general power P0 of the rated power P3 of device；Second judgment unit 714, for judging whether general power P0 is less than total rated power
P；Second heating unit 716, for starting microwave generating apparatus 104, with heating when general power P0 is less than total rated power P
Pipe 102 heats jointly, the second receiving unit 718, for receiving default cooking time t0；Second detection unit 720, for detecting
Cooking time t1；Third judging unit 722, for judging whether cooking time t1 reaches default cooking time t0；First control
Unit 724, for when judging that cooking time t1 reaches default cooking time t0, the first heating unit 704 to close heating tube
102 and second heating unit 616 close microwave generating apparatus, to stop heating, wherein the first judging unit 708 includes: the
Two acquiring units 7082 obtain preset temperature difference Δ T；Second computing unit 7084, for calculating real time temperature T1 and default temperature
Spend the temperature difference e of T2；4th judging unit 7088, judges whether temperature difference e is less than or equal to preset temperature difference Δ T；
When the 4th judging unit 7088 judges that temperature difference e is less than preset temperature difference Δ T, first acquisition unit 610 is obtained
The input power P2 of the heating tube 102 and rated power P3 of microwave generating apparatus.
In this embodiment, after receiving microwave barbecue combination function, start heating tube 102 in advance with the first power P 1
It is heated, also, the real time temperature T1 in real-time detection microwave oven 1, when real time temperature T1 reaches pre-set target temperature model
When enclosing interior, the input power P2 of heating tube 102 is detected, also, calculate current heated tube 102 input power P2 with it is micro-
The general power P0 of the sum of the rated power P3 of wave generating device, later, by the total rated power P of general power P0 and microwave oven 1
It is compared, when general power P0 is less than the total rated power P of microwave oven 1, starts microwave generating apparatus 104, with heating tube
102 common heating, on the contrary, then continuing when general power P0 is greater than or equal to the total rated power P of microwave oven 1 to heat
Pipe 102 is individually heated, and then ensures Electrical Safety when heating tube 102 and microwave generating apparatus 104 are opened jointly, and
And it realizes microwave generating apparatus 104 and heating tube 102 and heats jointly, and then when greatly reducing the culinary art of microwave oven 1
Between, improve the usage experience of user.Also, cooking time t0 is first preset, and timing cooking time t1, when cooking time t1 reaches
T0 when to default cooking time stops heating, and then can use different cooking times for different food materials, it is ensured that various
Food materials can obtain heating time appropriate, further, it is possible to which avoiding user from forgeing microwave oven 1 is cooking food materials, and cause
Microwave oven 1 is heated for a long time to generation security risk, also, by preset temperature difference Δ T, and is calculated in microwave oven 1
Real time temperature T1 and preset temperature T2 temperature difference e, when temperature difference e be less than preset temperature difference Δ T when, then be judged as real-time temperature
T1 is spent within the scope of pre-set target temperature, which can efficiently control the real time temperature T1 in microwave oven 1, can
The thermal inertia due to heating tube 102 is avoided, makes the real time temperature T1 in microwave oven 1 beyond the first preset temperature T0, Jin Erti
The temperature-controlled precision of microwave oven 1 has been risen, simultaneously as heating tube 102 maintains temperature only to need very small heating power, because
This is gradually decreased heating tube 102 by the first power P 1 after real time temperature T1 reaches the first preset temperature in microwave oven 1,
The temperature in microwave oven is maintained with lesser power, can be effectively prevented from heating tube 102 constantly " open, stop " leads to relay
Frequent movement, and then the physical life of heating tube 102 is influenced, also, heated only with lesser second power, Neng Gouyou
It imitates energy saving, improves the usage experience of user.
As shown in figure 8, in a particular embodiment, according to the differential equationDifference variation rate ec can be calculated,
Middle t is the time required for calculating production temperature difference e, as shown in fig. 7, being pushed away according to temperature difference e and difference variation rate ec by fuzzy
Reason and PID controller, can be realized fuzzy control, specifically, control bidirectional triode thyristor by fuzzy reasoning and PID controller,
PID controller controls the turn-on time of bidirectional triode thyristor according to temperature difference e and difference variation rate ec, output control pulse, and leads to
The electric current for controlling silicon-controlled turn-on time control heating tube 102 is crossed, and then adjusts the power of heating tube 102, also, due to double
To silicon-controlled copped wave principle, the electrodeless adjustment to 102 heating power of heating tube can be realized, heating tube 102 is first by biggish
First power P 1 is heated, and after temperature is rapidly achieved the first preset temperature T0 in microwave oven 1, heating tube 102 is by first
Power P 1 gradually decreases to less than the input power P2 of the first power P 1, and then heating tube 102 is avoided constantly to open, stop to relay
The influence in service life, while temperature control is more accurate, also, reduces energy consumption, in addition, when temperature difference e is larger, microwave oven
Interior temperature quickly approaches the first preset temperature T0；When temperature difference e is smaller, the temperature in microwave oven is slowly adjusted to first
Preset temperature T0 overcomes thermal inertia to influence so that the heating power of heating tube 102 is in operating state always, temperature control
Deviation processed is small, and then avoids the thermal inertia due to heating tube 102, and temperature fluctuation is big, and then improves the property of microwave oven 1
Energy.
As shown in Figure 10 and Figure 11, embodiment according to the third aspect of the invention we, it is roasting that the invention also provides a kind of microwaves
Case 1, including 1 heating control apparatus of microwave oven provided in such as any embodiment.
Microwave oven 1 provided by the invention, because of 1 computer heating control of the microwave oven dress comprising being provided in any of the above-described embodiment
It sets, therefore, has whole beneficial effects of 1 heating control apparatus of microwave oven provided in any of the above-described embodiment, herein
It does not do and states one by one.
In one embodiment of the invention, further includes: cavity 10 is provided with opening；Cavity 10 is arranged in door body 11
Opening, and be adapted with opening；Control panel 12 is arranged side by side with door body 11；Magnetron is arranged in 10 side of cavity；Extremely
A few heating tube 102, setting is at 10 top of cavity；And control circuit, for controlling real time temperature T1 in microwave oven 1.
In this embodiment, by the way that at least one heating tube 102 is arranged at the top of cavity 10, magnetic is set in 10 side of cavity
Keyholed back plate, to realize the microwave heating function and/or barbecue heating function of microwave oven 1.
In one embodiment of the invention, it is preferable that control panel 12 includes: light-emitting diode display, is located at control panel 12
Top；Temperature input keyboard is located at below light-emitting diode display；Functional select switch is located at below temperature input keyboard；Menu key,
Below functional select switch.
In this embodiment, oven related data is shown by light-emitting diode display, such as: it is real time temperature in oven, default
Target temperature, cooking time, default cooking time etc.；Pre-set target temperature is keyed in by temperature input keyboard, which can be
Physical keyboard can also make virtual touch formula keyboard；Functional select switch can at least select microwave function, baking function and micro-
Wave roasts combination function；Corresponding menu is selected according to cooked food materials by Menu key.
In one embodiment of the invention, it is preferable that further include: transformer 106 is located at below magnetron；Fan
108, it is arranged in 106 side of transformer.
In this embodiment, transformer 106 is set below magnetron, is provided accordingly for electric elements in microwave oven 1
Voltage, and cooled down by fan 108 to electric elements in microwave oven 1.
As shown in Fig. 8 and Fig. 9, in a particular embodiment, the circuit of the heating control apparatus of microwave oven 1 includes: thermoelectricity
It is even, for the temperature signal in microwave oven 1 to be converted to electric signal；Amplifying circuit, for amplifying electric signal；Filtered electrical
Road, for eliminating the interference in described number；A/D converter, for amplification, the electric signal eliminated after interfering to be converted to digital letter
Number；Fuzzy PID algorithm integrated circuit, for receiving digital signal, output signal after fuzzy PID algorithm；Photoelectrical coupler is used for
After the output signal for receiving fuzzy PID algorithm integrated circuit, output pulse signal；Bidirectional triode thyristor, for receiving photoelectric coupling
The pulse signal that device issues, and the angle of flow is controlled according to pulse signal, the control of the first heating unit effective current is completed, thus
Control the first heating unit operating power.
In this embodiment, the electrodeless adjustment of 102 power of heating tube is realized by the copped wave principle of bidirectional triode thyristor, first by
Temperature signal in microwave oven 1 is converted into electric signal by thermocouple, is amplified electric signal by amplifying circuit, and utilizes filtering
Circuit for eliminating interference, treated electric signal become digital signal by A/D converter and are integrated circuit identification, and comparison microwave is roasting
Real time temperature T1 and pre-set target temperature T2 in case 1, using temperature difference e and rate of temperature change ec as the input of fuzzy-adaptation PID control
Amount, fuzzy PID algorithm IC output signal control the angle of flow of bidirectional triode thyristor after photoelectrical coupler, and realization passes through
The effective current of heat-generating pipe changes, to change the input power P2 of heat-generating pipe.
In conclusion the heating control apparatus of the method for heating and controlling of microwave oven 1 provided by the invention, microwave oven 1
And microwave oven 1 is started heating tube 102 in advance and is heated with the first power P 1 after receiving microwave barbecue combination function,
Also, the real time temperature T1 in real-time detection microwave oven 1 is right when real time temperature T1 is reached within the scope of pre-set target temperature
The input power P2 of heating tube 102 is detected, also, the input power P2 for calculating current heated tube 102 is filled with microwave
General power P0 is compared by the general power P0 of the sum of the rated power P3 set with the total rated power P of microwave oven 1 later,
When general power P0 is less than the total rated power P of microwave oven 1, start microwave generating apparatus 104, adds jointly with heating tube 102
Heat, on the contrary, then continuing independent with heating tube 102 when general power P0 is greater than or equal to the total rated power P of microwave oven 1
It is heated, and then ensures Electrical Safety when heating tube 102 and microwave generating apparatus 104 are opened jointly, also, realize
Microwave generating apparatus 104 and heating tube 102 heat jointly, and then greatly reduce the cooking time of microwave oven 1, improve
The usage experience of user.Wherein it is preferred to when real time temperature T1 is within the scope of pre-set target temperature, by heating tube 102 by
One power P 1 gradually decreases to less than the second power of the first power P 1 is persistently heated.In the technical scheme, due to adding
Heat pipe 102 maintains temperature only to need very small heating power, therefore, real time temperature T arrival can preset in microwave oven 1
After temperature range, heating tube 102 is gradually decreased by the first power P 1 to less than the second power of the first power P 1 heats,
Heating tube 102 constantly " open, stop ", which can be effectively prevented from, leads to relay frequent movement, and then influences the practical of heating tube 102
Service life, also, heated only with lesser second power, it can be effectively energy saving.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention
It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality
Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with
Suitable mode combines.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of method for heating and controlling, is used for microwave oven, the microwave oven includes heating tube and microwave generating apparatus, spy
Sign is,
When receiving the instruction of microwave barbecue combination function, start the heating tube, and heated with the first power P 1；
The intracorporal real time temperature T1 of the chamber of microwave oven described in real-time detection；
Judge whether the real time temperature T1 reaches the first preset temperature T0；
When the real time temperature T1 reaches the first preset temperature T0, the heating power of the heating tube is reduced；
The rated power P3 of input power P2 and the microwave generating apparatus after obtaining the heating tube reduction；
Calculate the general power P0 of the rated power P3 of the input power P2 and the microwave generating apparatus；
Judge whether the general power P0 is less than the total rated power P of the microwave oven；
When the general power P0 is less than the total rated power P, start the microwave generating apparatus, it is common with the heating tube
Heating.
2. method for heating and controlling according to claim 1, which is characterized in that further include:
When receiving microwave barbecue combination function instruction, timing cooking time t1；
Judge whether the cooking time t1 reaches default cooking time t0；
When the cooking time t1 reaches the default cooking time t0, stop heating.
3. method for heating and controlling according to claim 1, which is characterized in that described to judge whether the real time temperature T1 reaches
It the step of to the first preset temperature T0, specifically includes:
Calculate the temperature difference e of the real time temperature T1 and the first preset temperature T0；
Judge whether the temperature difference e is less than or equal to preset temperature difference Δ T；
When the temperature difference e is less than or equal to the preset temperature difference Δ T, that is, it is judged as that real time temperature T1 reaches described first
Preset temperature T0.
4. method for heating and controlling according to any one of claim 1 to 3, which is characterized in that described to reduce the heating
It the step of heating power of pipe, specifically includes:
Pass through the differential equationCalculating temperature difference change rate ec, according to the temperature difference e and the difference variation rate ec conduct
Input quantity is reduced using the input power P2 that bidirectional triode thyristor controls the heating tube；
Wherein, t is the time required for generating temperature difference e.
5. method for heating and controlling according to claim 4, which is characterized in that described to use bidirectional triode thyristor real-time control institute
The step of input power P2 for stating heating tube is reduced, specifically includes:
Using the temperature difference e and the difference variation rate ec as input quantity, after fuzzy PID algorithm operation, output control
The turn-on time of bidirectional triode thyristor described in pulse control, the turn-on time by controlling the bidirectional triode thyristor control the heating
The electric current of pipe gradually decreases the input power P2 of the heating tube.
6. a kind of heating control apparatus, is used for microwave oven, the microwave oven includes heating tube and microwave generating apparatus, spy
Sign is, comprising:
First receiving unit is instructed for receive capabilities；
First heating unit, for starting the heating tube, and with the first function when receiving the instruction of microwave barbecue combination function
Rate P1 is heated；
First detection unit, the intracorporal real time temperature T1 of chamber for microwave oven described in real-time detection；
First judging unit, for judging whether the real time temperature T1 reaches the first preset temperature T0；
First acquisition unit, for obtaining the defeated of the heating tube when the real time temperature T1 reaches the first preset temperature T0
Enter the rated power P3 of power P 2 Yu the microwave generating apparatus；
First computing unit, for calculating the input power P2 of the heating tube and the rated power P3 of the microwave generating apparatus
General power P0；
Second judgment unit, for judging whether the general power P0 is less than the total rated power P of the microwave oven；
Second heating unit, for starting the microwave and filling when the general power P0 is less than the total rated power P
It sets, is heated jointly with the heating tube.
7. heating control apparatus according to claim 6, which is characterized in that further include:
Second receiving unit, for receiving default cooking time t0；
Second detection unit, for detecting cooking time t1；
Third judging unit, for judging whether the cooking time t1 reaches the default cooking time t0；
First control unit, for when judge that the cooking time t1 reaches the default cooking time t0, control described the
One heating unit closes the heating tube, and control second heating unit closes the microwave generating apparatus, to stop adding
Heat.
8. heating control apparatus according to claim 6, which is characterized in that first judging unit includes:
Second acquisition unit obtains preset temperature difference Δ T；
Second computing unit, for calculating the temperature difference e of the real time temperature T1 and the first preset temperature T0；
4th judging unit, judges whether the temperature difference e is less than or equal to the preset temperature difference Δ T；
When the 4th judging unit judges that the temperature difference e is less than or equal to the preset temperature difference Δ T, described first is obtained
Unit is taken to obtain the input power P2 of the heating tube and the rated power P3 of the microwave generating apparatus.
9. the heating control apparatus according to any one of claim 6 to 8, which is characterized in that further include:
Third acquiring unit obtains time t required for generating the temperature difference e；
Second control unit, for passing through the differential equationCalculating temperature difference change rate ec, according to the temperature difference e and described
Difference variation rate ec reduces the input power P2 of the heating tube by bidirectional triode thyristor.
10. heating control apparatus according to claim 9, which is characterized in that
Second control unit is specifically included by the input power P2 of heating tube described in bidirectional triode thyristor real-time control:
Using the temperature difference e and the difference variation rate ec as input quantity, pass through the integrated circuit operational of fuzzy PID algorithm
Afterwards, the turn-on time of output control pulse control bidirectional triode thyristor controls the heating by controlling silicon-controlled turn-on time
The electric current of pipe gradually decreases the input power P2 of the heating tube.
11. a kind of microwave oven, which is characterized in that including the heating control apparatus as described in any one of claim 6 to 10.
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| CH704191A2 (en) * | 2012-04-18 | 2012-05-31 | V Zug Ag | Cooking device for cooking food, has control automatically activating steam generator, microwave generator, hot air generator and/or heaters within cooking process for cooking food based on inputted cooking program |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111616167A (en) * | 2020-05-27 | 2020-09-04 | 广东智源机器人科技有限公司 | Oven temperature control method and system, oven and storage medium |
| CN111616167B (en) * | 2020-05-27 | 2021-09-03 | 广东智源机器人科技有限公司 | Oven temperature control method and system, oven and storage medium |
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| CN106658807A (en) | 2017-05-10 |
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