CN203131890U - Micro-wave oven - Google Patents
Micro-wave oven Download PDFInfo
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- CN203131890U CN203131890U CN 201320024335 CN201320024335U CN203131890U CN 203131890 U CN203131890 U CN 203131890U CN 201320024335 CN201320024335 CN 201320024335 CN 201320024335 U CN201320024335 U CN 201320024335U CN 203131890 U CN203131890 U CN 203131890U
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Abstract
The utility model proposes a micro-wave oven, comprising a boost module, a detection module, a controller and a switch module, wherein the boost module comprises a transformer; the primary stage of the transformer comprises a first coil and a second coil; the first coil is serially connected with the second coil; the boost module converts input power supply voltage into first preset voltage; the detection module detects the input power supply voltage to generate a detection signal; the controller is connected with the detection module and processes the detection signal to generate a control signal; and the switch module is connected with the boost module and the controller respectively and controls the first coil and the second coil to work according to the control signal. A micro-wave oven magnetron can normally work when input voltage of the micro-wave oven disclosed by the utility model is over-low or over-high. Thus, the micro-wave oven can work in a wide voltage range, and the cooking effect is ensured. The control method of the micro-wave oven is simple and reliable.
Description
Technical field
The utility model relates to the micro-wave oven technical field, particularly a kind of micro-wave oven.
Background technology
Micro-wave oven partly is made up of electric-control system, magnetron and cooking cavity etc.Electric-control system with the 220V alternating voltage by high-tension transformer and high-voltage rectifier, be converted into the DC voltage about 4000V, deliver to magnetron to produce microwave, microwave is through Wave guide system, be coupled in the cooking cavity, because cooking cavity is that metal is made, microwave can not pass can only be at intracavity reflecting, and penetrate food repeatedly, thereby realize heat food.In actual use, fluctuation often appears in supply voltage, causes voltage instability.Yet micro-wave oven is comparatively responsive to the fluctuation of supply voltage, when ± 10% fluctuation took place input voltage, the microwave output power of magnetron will take place ± and 15%～± 20% variation.
Existing micro-wave oven, its primary have only a winding, and when supply voltage increased, the microwave output power of micro-wave oven also can increase; On the contrary, when supply voltage reduced, the microwave output power of micro-wave oven also can reduce.And if the microwave output power of micro-wave oven reduces, then can cause the inadequate phenomenon of the cooking, if the microwave output power of micro-wave oven increases, the phenomenon that then can cause the cooking to overdo, even sparking also can appear in cavity and fire door, phenomenons such as molten door seal also can appear in fire door, and the too high phenomenon of temperature rise also can appear in micro-wave oven kernel component magnetron and transformer, thereby influences the life-span.
The utility model content
The purpose of this utility model is intended to one of solve the problems of the technologies described above at least.
For this reason, the purpose of this utility model is to propose a kind of micro-wave oven, when input voltage is on the low side or higher, magnetron in this micro-wave oven all can operate as normal, thereby realize the working range of the wide voltage of micro-wave oven, avoided food when supply voltage is higher, cook overdoing, can not be by abundant boiling when supply voltage is low, the assurance effect of cooking, satisfy people's real life needs, brought convenience to people.
For reaching above-mentioned purpose, the micro-wave oven that the utility model proposes comprises: boost module, described boost module comprises transformer, elementary first coil and second coil of comprising of described transformer, described first coil and the series connection of described second coil, described boost module is converted into first predeterminated voltage with the supply voltage of input; Detection module, described detection module detect the supply voltage of described input to generate detection signal; Controller, described controller links to each other with described detection module, and described controller handles to generate control signal to described detection signal; Switch module, described switch module link to each other with described controller with described boost module respectively, and described switch module controls described first coil according to described control signal and described second coil carries out work.
According to micro-wave oven of the present utility model when input voltage is on the low side or higher, microwave oven magnetic all can operate as normal, thereby realize the working range of the wide voltage of micro-wave oven, avoided food when supply voltage is higher, to cook overdoing, can not be by abundant boiling when supply voltage is low, the assurance effect of cooking, satisfy people's real life needs, brought convenience to people.This control method of microwave oven is simple and reliable in addition.
Wherein, described controller carries out AD to described detection signal and changes to generate detection voltage, and at described detection voltage during greater than predetermined threshold value, control described first coil and described second coil carries out work, and, control described second coil and carry out work during less than described predetermined threshold value at described detection voltage.
Further, described detection module comprises: isolating transformer; First diode, the anode tap of described first diode links to each other with an end of described isolating transformer secondary windings; Electrochemical capacitor, the positive terminal of described electrochemical capacitor links to each other with the cathode terminal of described first diode, and the negative pole end of described electrochemical capacitor links to each other with ground with the other end of described isolating transformer secondary windings respectively; Second diode, the anode tap of described second diode link to each other with the positive terminal of described electrochemical capacitor and the cathode terminal of described first diode respectively, and the cathode terminal of described second diode links to each other with first reference power source.
Further, described switch module comprises: first resistance, and an end of described first resistance links to each other with described controller; First triode, the base stage of described first triode links to each other with the other end of described first resistance, the grounded emitter of described first triode; Relay, one end of described relay coil links to each other with the colelctor electrode of described first triode, the other end of described relay coil links to each other with second reference power source, the output of described relay coil links to each other with the movable contact of described relay, described movable contact links to each other with node between described first coil and described second coil, first stationary contact of described relay links to each other with the positive terminal of the power supply of described input, second stationary contact of described relay links to each other with an end of described first coil, wherein, the other end of described first coil links to each other with an end of described second coil, and the other end of described second coil links to each other with the negative pole end of the power supply of described input.
In addition, described micro-wave oven also comprises: Executive Module, described Executive Module links to each other with described boost module, described Executive Module launched microwave.
The aspect that the utility model is additional and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and/or the additional aspect of the utility model and advantage are from obviously and easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the microwave oven structure block diagram according to the utility model embodiment;
Fig. 2 is the circuit diagram according to the micro-wave oven of an embodiment of the utility model;
Fig. 3 is the flow chart according to the control method of microwave oven of an embodiment of the utility model; And
Fig. 4 is the flow chart according to the control method of microwave oven of a concrete example of the utility model.
Reference numeral:
Detection module 1, controller 2, switch module 3, boost module 4, transformer 40, first coil 41, second coil 42, node D, isolating transformer T1, the first diode D1, the second diode D2, electrochemical capacitor C1, first resistance R 1, the first triode Q1, relay R L1, movable contact A, the first stationary contact B, the second stationary contact C, Executive Module 5, magnetron M.
The specific embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein identical or similar label is represented identical or similar elements or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Disclosing hereinafter provides many different embodiment or example to be used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter parts and the setting to specific examples is described.Certainly, they only are example, and purpose does not lie in restriction the utility model.In addition, the utility model can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and purpose clearly, itself not indicate the relation between the various embodiment that discuss of institute and/or the setting.In addition, various specific technology and examples of material that the utility model provides, but those of ordinary skills can recognize the property of can be applicable to of other technologies and/or the use of other materials.In addition, first feature described below second feature it " on " structure can comprise that first and second features form the embodiment of direct contact, can comprise that also additional features is formed on the embodiment between first and second features, such first and second features may not be direct contacts.
In description of the present utility model, need to prove, unless otherwise prescribed and limit, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly to link to each other, and also can link to each other indirectly by intermediary, for the ordinary skill in the art, can understand the concrete implication of above-mentioned term as the case may be.
With reference to following description and accompanying drawing, with these and other aspects of clear embodiment of the present utility model.In these descriptions and accompanying drawing, some specific implementations among the embodiment of the present utility model are specifically disclosed, represent to implement some modes of the principle of embodiment of the present utility model, but should be appreciated that the scope of embodiment of the present utility model is not limited.On the contrary, embodiment of the present utility model comprises spirit and interior all changes, modification and the equivalent of intension scope that falls into institute's additional claims.
Micro-wave oven and the control method of microwave oven that the utility model embodiment is proposed is described with reference to the accompanying drawings.
At first the micro-wave oven that the utility model embodiment proposes is described below with reference to Fig. 1 and Fig. 2.
As shown in Figure 1, the micro-wave oven of the utility model embodiment proposition comprises boost module 4, detection module 1, controller 2 and switch module 3.
Boost module 4 comprises transformer 40, elementary first coil 41 and second coil 42 of comprising of transformer 40, as shown in Figure 2, first coil 41 and 42 series connection of second coil, transformer 40 is converted into first predeterminated voltage with the supply voltage of input, and wherein, first predeterminated voltage can be high pressure 4000V.
Detection module 1 detects the supply voltage of input to generate detection signal.In an embodiment of the present utility model, as shown in Figure 2, detection module 1 comprises isolating transformer T1, the first diode D1, electrochemical capacitor C1 and the second diode D2.
Wherein, the anode tap of the first diode D1 links to each other with an end of isolating transformer T1 secondary windings, the positive terminal of electrochemical capacitor C1 links to each other with the cathode terminal of the first diode D1, the negative pole end of electrochemical capacitor C1 links to each other with ground with the other end of isolating transformer T1 secondary windings respectively, the anode tap of the second diode D2 links to each other with the positive terminal of electrochemical capacitor C1 and the cathode terminal of the first diode D1 respectively, and the cathode terminal of the second diode D2 links to each other with first reference power source.Wherein, first reference voltage can be+5V.
Particularly; isolating transformer T1 output voltage carries out rectification by the first diode D1 earlier and becomes direct current signal; carry out smoothing processing to obtain level and smooth signal by electrochemical capacitor C1, the back level holding circuit through being made up of the second diode D2 outputs to controller 2 at last then.
Thus, detection module 1 can be realized its input power source voltage is accurately detected at cooking in microwave oven the time, and cost is low, dependable performance.
Controller 2 links to each other with detection module 1, and 2 pairs of detection signals of controller handle to generate control signal.Wherein, as shown in Figure 2, controller 2 can be MCU(Micro Control Unit, micro-control unit).
Particularly, 2 pairs of detection signals of controller carry out AD and change to generate detection voltage, and when detecting voltage greater than predetermined threshold value, control first coil 41 and second coil 42 carries out work, namely connect the low-voltage output of transformer 40, and when detecting voltage less than predetermined threshold value, control second coil 42 and carry out work, namely connect the high-voltage output end of transformer 40.Wherein, predetermined threshold value can the micro-wave oven rated voltage 5%.
Switch module 3 links to each other with controller 2 with boost module 4 respectively, and the control signal that switch module 3 generates according to controller 2 controls first coil 41 and second coil 42 carries out work.
In an embodiment of the present utility model, as shown in Figure 2, switch module 3 comprises first resistance R 1, the first triode Q1 and relay R L1.
Wherein, an end of first resistance R 1 links to each other with controller 2, and the base stage of the first triode Q1 links to each other with the other end of first resistance R 1, the grounded emitter of the first triode Q1.One end of relay R L1 coil links to each other with the colelctor electrode of the first triode Q1, the other end of relay R L1 coil links to each other with second reference power source, the output of relay R L1 coil links to each other with the movable contact A of relay R L1, movable contact A links to each other with node D between first coil 41 and second coil 42, the first stationary contact B of relay R L1 links to each other with the positive terminal AC-L of the power supply of input, the second stationary contact C of relay R L1 links to each other with an end of first coil 41, wherein, the other end of first coil 41 links to each other with an end of second coil 42, and the other end of second coil 42 links to each other with the negative pole end AC-N of the power supply of input.Wherein, second reference voltage can be+12V.
Particularly, the control signal of controller 2 output is connected to the base stage of the first triode Q1 after by first resistance R, 1 current limliting, and the first triode Q1 drives relay R L1 according to the high-low level of controller 2 outputs and connects normal-closed end and still connect Chang Kaiduan.
In further embodiment of the present utility model, this micro-wave oven also comprises Executive Module 5.Executive Module 5 links to each other with boost module 4, Executive Module 5 launched microwaves.Wherein, as shown in Figure 2, Executive Module 5 comprises magnetron M, and particularly, magnetron M utilizes high voltage and high-intensity magnetic field that electric energy is changed into microwave energy so that Executive Module 5 launched microwaves.
As shown in Figure 3, the control method of microwave oven of the utility model embodiment comprises the steps:
S1, detection module 1 detect the supply voltage of input with the generation detection signal, and detection signal is sent to controller 2.
S2,2 pairs of detection signals of controller handle to generate control signal.
S3, switch module 3 controls first coil 41 according to control signal and second coil 42 carries out work.
In an embodiment of the present utility model, further comprise step: 2 pairs of detection signals of controller carry out AD and change to generate detection voltage, and judge detecting voltage.When detecting voltage greater than predetermined threshold value, controller 2 control first coils 41 and second coil 42 carry out work, namely connect transformer 40 low-voltage outputs; When detecting voltage less than predetermined threshold value, controller 2 controls second coil 42 carries out work, namely connects transformer 40 high-voltage output ends.Wherein, predetermined threshold value be that predetermined threshold value can the micro-wave oven rated voltage 5%.
Further, also comprise: controller 2 is judged the remaining time of cooking in microwave oven, and the control micro-wave oven finishes the cooking when be zero remaining time.
The control method of microwave oven that the utility model embodiment proposes is described with concrete example below in conjunction with Fig. 4.
S10, cooking beginning.
S20 detects supply voltage, i.e. Shu Ru power source voltage.Particularly, the power source voltage of 1 pair of input of detection module detects.And detection signal sent into controller 2,2 pairs of detection signals of controller carry out AD and change to generate detection voltage, and judge detecting voltage.
S30, controller 2 judge that whether detection voltage is less than 5% of rated voltage.If, execution in step S50, otherwise execution in step S40.
S40, controller 2 judge that whether detection voltage is less than 5% of rated voltage.If, execution in step S60, otherwise execution in step S70.
S50, controller 2 control relay RL1 connect the low-voltage output.
S60, control relay RL1 connects high-voltage output terminal.
S70 judges that the residue cooking time finishes.If execution in step S80 then, otherwise return step S20.Particularly, controller 2 is judged the remaining time of cooking in microwave oven, and the control micro-wave oven finishes the cooking when be zero remaining time.
S80, end of cooking.
Need to prove that when if controller 2 judges that detecting voltages equals specified predetermined threshold value, the on-state of relay R L1 is constant, i.e. speech: be to connect the low-voltage output before, then still connect the low-voltage output; Be to connect high-voltage output terminal before, then still connect high-voltage output terminal.
Can detect its input supply voltage when the cooking in microwave oven according to the micro-wave oven of the utility model embodiment, when detected supply voltage is greater than or less than predetermined threshold value, first coil controlled by controller and second coil carries out work, realize that micro-wave oven is when input supply voltage is higher or on the low side, magnetron in the micro-wave oven is the energy operate as normal all, thereby realizes the working range of the wide voltage of micro-wave oven.
In addition, micro-wave oven of the present utility model can make the micro-wave oven normally cooking in than wide-voltage range, thereby having avoided food to cook when supply voltage is higher overdoes, can not be by abundant boiling when supply voltage is low, the assurance effect of cooking, satisfy people's real life needs, brought convenience to people, and this control method of microwave oven is simple and reliable.
In addition, other formations and the effect thereof of micro-wave oven are well known to those skilled in the art, and do not do at this and give unnecessary details.
Describe and to be understood that in the flow chart or in this any process of otherwise describing or method, expression comprises the module of code of the executable instruction of the step that one or more is used to realize specific logical function or process, fragment or part, and the scope of preferred embodiment of the present utility model comprises other realization, wherein can be not according to order shown or that discuss, comprise according to related function by the mode of basic while or by opposite order, carry out function, this should be understood by embodiment person of ordinary skill in the field of the present utility model.
In flow chart the expression or in this logic of otherwise describing and/or step, for example, can be considered to the sequencing tabulation for the executable instruction that realizes logic function, may be embodied in any computer-readable medium, use for instruction execution system, device or equipment (as the computer based system, comprise that the system of processor or other can be from the systems of instruction execution system, device or equipment instruction fetch and execution command), or use in conjunction with these instruction execution systems, device or equipment.With regard to this specification, " computer-readable medium " can be anyly can comprise, storage, communication, propagation or transmission procedure be for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically of computer-readable medium (non-exhaustive list) comprises following: the electrical connection section (electronic installation) with one or more wirings, portable computer diskette box (magnetic device), random-access memory (ram), read-only storage (ROM), can wipe and to edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk read-only storage (CDROM).In addition, computer-readable medium even can be paper or other the suitable media that to print described program thereon, because can be for example by paper or other media be carried out optical scanner, then edit, decipher or handle to obtain described program in the electronics mode with other suitable methods in case of necessity, then it is stored in the computer storage.
Should be appreciated that each several part of the present utility model can realize with hardware, software, firmware or their combination.In the above-described embodiment, a plurality of steps or method can realize with being stored in the memory and by software or firmware that suitable instruction execution system is carried out.For example, if realize with hardware, the same in another embodiment, in the available following technology well known in the art each or their combination realize: have for the discrete logic of data-signal being realized the logic gates of logic function, special IC with suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that and realize that all or part of step that above-described embodiment method is carried is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises one of step or its combination of method embodiment when carrying out.
In addition, each functional unit in each embodiment of the utility model can be integrated in the processing module, also can be that the independent physics in each unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be read-only storage, disk or CD etc.
In the description of this specification, concrete feature, structure, material or characteristics that the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example description are contained at least one embodiment of the present utility model or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete feature, structure, material or the characteristics of description can be with the suitable manner combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that under the situation that does not break away from principle of the present utility model and spirit and can carry out multiple variation, modification, replacement and modification to these embodiment that scope of the present utility model is by claims and be equal to and limit.
Claims (4)
1. a micro-wave oven is characterized in that, comprising:
Boost module, described boost module comprises transformer, elementary first coil and second coil of comprising of described transformer, described first coil and the series connection of described second coil, described boost module is converted into first predeterminated voltage with the supply voltage of input;
Detection module, described detection module detect the supply voltage of described input to generate detection signal;
Controller, described controller links to each other with described detection module, and described controller handles to generate control signal to described detection signal;
Switch module, described switch module link to each other with described controller with described boost module respectively, and described switch module controls described first coil according to described control signal and described second coil carries out work.
2. micro-wave oven as claimed in claim 1 is characterized in that, described detection module comprises:
Isolating transformer;
First diode, the anode tap of described first diode links to each other with an end of described isolating transformer secondary windings;
Electrochemical capacitor, the positive terminal of described electrochemical capacitor links to each other with the cathode terminal of described first diode, and the negative pole end of described electrochemical capacitor links to each other with ground with the other end of described isolating transformer secondary windings respectively;
Second diode, the anode tap of described second diode link to each other with the positive terminal of described electrochemical capacitor and the cathode terminal of described first diode respectively, and the cathode terminal of described second diode links to each other with first reference power source.
3. micro-wave oven as claimed in claim 1 is characterized in that, described switch module comprises:
First resistance, an end of described first resistance links to each other with described controller;
First triode, the base stage of described first triode links to each other with the other end of described first resistance, the grounded emitter of described first triode;
Relay, one end of described relay coil links to each other with the colelctor electrode of described first triode, the other end of described relay coil links to each other with second reference power source, the output of described relay coil links to each other with the movable contact of described relay, described movable contact links to each other with node between described first coil and described second coil, first stationary contact of described relay links to each other with the positive terminal of the power supply of described input, second stationary contact of described relay links to each other with an end of described first coil, wherein, the other end of described first coil links to each other with an end of described second coil, and the other end of described second coil links to each other with the negative pole end of the power supply of described input.
4. micro-wave oven as claimed in claim 1 is characterized in that, also comprises:
Executive Module, described Executive Module links to each other with described boost module, described Executive Module launched microwave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320024335 CN203131890U (en) | 2013-01-16 | 2013-01-16 | Micro-wave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320024335 CN203131890U (en) | 2013-01-16 | 2013-01-16 | Micro-wave oven |
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| CN203131890U true CN203131890U (en) | 2013-08-14 |
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| CN 201320024335 Expired - Lifetime CN203131890U (en) | 2013-01-16 | 2013-01-16 | Micro-wave oven |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925621A (en) * | 2013-01-16 | 2014-07-16 | 广东美的厨房电器制造有限公司 | Microwave oven and control method thereof |
| CN105444221A (en) * | 2015-12-09 | 2016-03-30 | 九阳股份有限公司 | Induction cooker and power control method and device thereof |
-
2013
- 2013-01-16 CN CN 201320024335 patent/CN203131890U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925621A (en) * | 2013-01-16 | 2014-07-16 | 广东美的厨房电器制造有限公司 | Microwave oven and control method thereof |
| CN103925621B (en) * | 2013-01-16 | 2016-08-03 | 广东美的厨房电器制造有限公司 | Microwave oven and control method thereof |
| CN105444221A (en) * | 2015-12-09 | 2016-03-30 | 九阳股份有限公司 | Induction cooker and power control method and device thereof |
| CN105444221B (en) * | 2015-12-09 | 2019-04-02 | 九阳股份有限公司 | A kind of electromagnetic oven and its Poewr control method |
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Owner name: GUANGDONG MIDEA KITCHEN APPLIANCE MANUFACTURING CO Free format text: FORMER NAME: GUANGDONG MIDEA MICROWAVE AND ELECTRICAL APPLIANCES MANUFACTURING CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 528311 Yongan Road, Beijiao Town, Guangdong District, Foshan, No. 6, No. Patentee after: GUANGDONG MIDEA KITCHEN APPLIANCES MANUFACTURING Co.,Ltd. Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311 Yongan Road, Beijiao Town, Guangdong District, Foshan, No. 6, No. Patentee before: GUANGDONG MIDEA MICROWAVE AND ELECTRICAL APPLIANCES MANUFACTURING Co.,Ltd. Patentee before: MIDEA GROUP Co.,Ltd. |
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Granted publication date: 20130814 |
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