CN207939781U - A kind of micro-wave oven adjusts circuit and micro-wave oven - Google Patents
A kind of micro-wave oven adjusts circuit and micro-wave oven Download PDFInfo
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- CN207939781U CN207939781U CN201820233861.8U CN201820233861U CN207939781U CN 207939781 U CN207939781 U CN 207939781U CN 201820233861 U CN201820233861 U CN 201820233861U CN 207939781 U CN207939781 U CN 207939781U
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- wave oven
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Abstract
The utility model discloses a kind of micro-wave ovens to adjust circuit and micro-wave oven, and the micro-wave oven adjusts circuit and includes：Transformer, rectification circuit, unilateal conduction circuit and magnetron；The secondary windings of the transformer includes Filament Winding and high-voltage winding；The magnetron includes magnetron heater, anode of magnetron and magnetron cathode；The input terminal of the rectification circuit is connect with the high-voltage winding, and the output end of the rectification circuit is connect with the anode of magnetron and the magnetron cathode；The input terminal of the unilateal conduction circuit is connect with the Filament Winding, and the output end of the unilateal conduction circuit is connect with the magnetron heater；The unilateal conduction circuit is used to adjust the power of the magnetron heater.The utility model can adjust the power of filament by unilateal conduction circuit in real time, and filament and magnetron is made to be operated in optimum state, and excessive electric current and filament wattage deficiency influence burn-out life when filament being avoided to start.
Description
Technical field
The utility model is related to micro-wave oven technical fields more particularly to a kind of micro-wave oven to adjust circuit and micro-wave oven.
Background technology
Micro-wave oven is with its efficiency height, homogeneous heating in the unit interval and the favor for receiving more and more users.With biography
The microwave oven supply power of system is compared, and microwave oven supply power uses Switching Power Supply that power is continuously adjusted in a certain range instead of defeated
Going out power can not continuously adjustable Industrial Frequency Transformer.
In the process of implementing the utility model, inventor has found that the prior art has the following problems：Existing micro-wave oven
Power circuit influences burn-out life when filament pre-heating electric current is big, and then influences the service life of magnetron；It can not be in use
The power for adjusting filament in real time causes filament wattage insufficient or excessive, filament is caused to overheat.
Utility model content
The main purpose of the utility model is that proposing that a kind of micro-wave oven adjusts circuit and micro-wave oven, it is intended to solve existing
Technology there are the problem of.
To achieve the above object, the utility model embodiment provides a kind of micro-wave oven adjusting circuit, and the micro-wave oven is adjusted
Circuit includes：Transformer, rectification circuit, unilateal conduction circuit and magnetron；
The secondary windings of the transformer includes Filament Winding and high-voltage winding；The magnetron include magnetron heater,
Anode of magnetron and magnetron cathode；
The input terminal of the rectification circuit is connect with the high-voltage winding, the output end of the rectification circuit and the magnetic control
Tube anode is connected with the magnetron cathode；
The input terminal of the unilateal conduction circuit is connect with the Filament Winding, the output end of the unilateal conduction circuit with
The magnetron heater connection；The unilateal conduction circuit is used to adjust the power of the magnetron heater.
Optionally, the rectification circuit is half-wave rectifying circuit or voltage doubling rectifing circuit.
Optionally, the unilateal conduction circuit includes diode or thyristor.
Optionally, it further includes power circuit that the micro-wave oven, which adjusts circuit,；
The input terminal of the power circuit is connected to AC power, and the output end of the power circuit is connected to the transformation
The armature winding of device, the power circuit is for driving the transformer to work.
Optionally, the power circuit includes current rectifying and wave filtering circuit and switching circuit；
The input terminal of the current rectifying and wave filtering circuit is connected to AC power, and the output end of the current rectifying and wave filtering circuit is connected to
The input terminal of the switching circuit, the output end of the switching circuit are connected to the armature winding of the transformer.
Optionally, the current rectifying and wave filtering circuit includes bridge rectifier and filter capacitor；
The input terminal of the bridge rectifier is connected to AC power, and the output end of the bridge rectifier is connected to
The input terminal of the switching circuit；The filter capacitor is connected in parallel on the output end of the bridge rectifier.
Optionally, the switching circuit includes the power switch tube being connected in series with and resonant capacitance.
Optionally, the power switch tube is insulated gate bipolar transistor or metal oxide semiconductor field-effect
Pipe.
In addition, to achieve the above object, the utility model embodiment provides a kind of micro-wave oven, and the micro-wave oven includes above-mentioned
Micro-wave oven adjust circuit.
The micro-wave oven that the utility model embodiment provides adjusts circuit and micro-wave oven, can be real-time by unilateal conduction circuit
The power for adjusting filament, makes filament and magnetron be operated in optimum state, excessive electric current and filament when filament being avoided to start
Underpower influences burn-out life.
Description of the drawings
Fig. 1 is that the micro-wave oven of the utility model embodiment adjusts electrical block diagram；
Fig. 2 is that the micro-wave oven of the utility model embodiment adjusts switching circuit structure schematic diagram in circuit.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific implementation mode
It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this
Utility model.
The each embodiment of the utility model is realized in description with reference to the drawings.In subsequent description, using for
Indicate element such as " module ", " component " or " unit " suffix only for being conducive to the explanation of the utility model, itself
There is no specific meanings.
It will be further appreciated that the term that is used in the utility model specification and appended book " and/
Or " refer to one or more of associated item listed any combinations and all possible combinations, and include these groups
It closes.
First embodiment：
As shown in Figure 1, the utility model first embodiment provides a kind of micro-wave oven adjusting circuit, the micro-wave oven adjusts electricity
Road includes：Transformer 11, rectification circuit 12, unilateal conduction circuit 13 and magnetron (attached drawing is not shown).
The secondary windings of the transformer 11 includes Filament Winding (shown in the T3 in figure) and high-voltage winding (the T2 institutes in figure
Show)；The magnetron includes magnetron heater, anode of magnetron and magnetron cathode；
The input terminal of the rectification circuit 12 is connect with the high-voltage winding, the output end of the rectification circuit 12 with it is described
Anode of magnetron is connected with the magnetron cathode.
In the present embodiment, the rectification circuit 12 includes half-wave rectifying circuit or voltage doubling rectifing circuit.
The input terminal of the unilateal conduction circuit 13 is connect with the Filament Winding, the output of the unilateal conduction circuit 13
End is connect with the magnetron heater；The unilateal conduction circuit 13 is used to adjust the power of the magnetron heater.
In the present embodiment, the unilateal conduction circuit 13 includes diode or thyristor.It should be noted that unidirectional
Conducting channel 13 is simultaneously limited to this two types, is equivalent to the triode or metal-oxide-semiconductor circuit of diode, can also realize.
It refer again to shown in Fig. 1, in one embodiment, it further includes power circuit (figure that the micro-wave oven, which adjusts circuit,
In 14,15 shown in)；
The input terminal of the power circuit is connected to AC power (such as 220V AC powers, alternating current etc.), the power supply
The output end of circuit is connected to the armature winding (shown in the T1 in figure) of the transformer, and the power circuit is described for driving
Transformer works.
In this embodiment, the power circuit includes current rectifying and wave filtering circuit 14 and switching circuit 15；
The input terminal of the current rectifying and wave filtering circuit 14 is connected to AC power, and the output end of the current rectifying and wave filtering circuit 14 connects
It is connected to the input terminal of the switching circuit 15, the output end of the switching circuit 15 is connected to the armature winding of the transformer.
Specifically, the current rectifying and wave filtering circuit 14 includes bridge rectifier (shown in the D1-D4 in figure) and filter capacitor
C1；
The input terminal of the bridge rectifier is connected to AC power, and the output end of the bridge rectifier is connected to
The input terminal of the switching circuit 15；The filter capacitor C1 is connected in parallel on the output end of the bridge rectifier.
Shown in please referring to Fig.2, in this embodiment, the switching circuit 15 includes the power switch tube Q1 being connected in series with
With resonant capacitance C2.
Specifically, one end (shown in a in figure) of resonant capacitance C2 is connect with an output end of the bridge rectifier,
The other end of resonant capacitance C2 connect (in figure 2 shown in) with the second end of power switch tube Q1 (shown in the d in figure), power is opened
The third end connection (in figure 3 shown in) for closing pipe Q1 is connect, power switch tube with another output end of the bridge rectifier
The first end (in figure 1 shown in) of Q1 receives control signal (attached drawing is not shown).The armature winding of the transformer 11 is connected in parallel on
The both ends of the resonant capacitance C2 (shown in c, d in figure).
In this embodiment, the power switch tube Q1 is insulated gate bipolar transistor (Insulated Gate
Bipolar Transistor, IGBT) or metal oxide semiconductor field effect tube (Metal-Oxide-
Semiconductor Field-Effect Transistor, MOSFET).
When power switch tube Q1 is insulated gate bipolar transistor, 1 end in Fig. 2 is insulated gate bipolar transistor
Grid, 2 ends in Fig. 2 are the collector of insulated gate bipolar transistor pipe, and 3 ends in Fig. 2 are insulated gate bipolar transistor
Emitter.When power switch tube Q1 is metal oxide semiconductor field effect tube, similar, therefore not to repeat here.
For the ease of understanding the present embodiment, the adjusting of filament wattage is illustrated below：
As shown in Figure 1, when the electric current increase that enters from 1 end of armature winding T1 (or is flowed out from 1 end of armature winding T1
When electric current reduces) when, the 1 end output voltage of Filament Winding T3 is that just, unilateal conduction circuit 13 is connected, and magnetron heater has electric current
Pass through；When the electric current that enters from 1 end of armature winding T1 reduces when electric current increase (or flow out from 1 end of armature winding T1)
When, the 1 end output voltage of Filament Winding T3 is negative, and unilateal conduction circuit 13 ends, and magnetron heater no current passes through.It is logical in this way
Size and the time of magnetron heater electric current can be changed by crossing control and flowing through the curent change trend of armature winding T1 and time,
To control filament wattage.
Micro-wave oven provided in this embodiment adjusts circuit, can adjust the power of filament in real time by unilateal conduction circuit, make
Filament and magnetron are operated in optimum state, and excessive electric current and filament wattage deficiency influence the filament longevity when filament being avoided to start
Life
Second embodiment：
The utility model second embodiment provides a kind of micro-wave oven, and micro-wave oven includes the micro-wave oven tune described in first embodiment
Economize on electricity road.
Micro-wave oven adjusts circuit and can refer to foregoing teachings, and therefore not to repeat here.
Micro-wave oven provided in this embodiment can be adjusted the power of filament by unilateal conduction circuit, make filament and magnetic in real time
Keyholed back plate is operated in optimum state, and excessive electric current and filament wattage deficiency influence burn-out life when filament being avoided to start.
It these are only the preferred embodiment of the utility model, it does not limit the scope of the patent of the present invention, every
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are equally included in the patent within the scope of the utility model.
Claims (9)
1. a kind of micro-wave oven adjusts circuit, which is characterized in that the micro-wave oven adjusts circuit and includes：Transformer, rectification circuit, list
To conducting channel and magnetron；
The secondary windings of the transformer includes Filament Winding and high-voltage winding；The magnetron includes magnetron heater, magnetic control
Tube anode and magnetron cathode；
The input terminal of the rectification circuit is connect with the high-voltage winding, the output end of the rectification circuit and magnetron sun
Pole is connected with the magnetron cathode；
The input terminal of the unilateal conduction circuit is connect with the Filament Winding, the output end of the unilateal conduction circuit with it is described
Magnetron heater connects；The unilateal conduction circuit is used to adjust the power of the magnetron heater.
2. a kind of micro-wave oven according to claim 1 adjusts circuit, which is characterized in that the rectification circuit is halfwave rectifier
Circuit or voltage doubling rectifing circuit.
3. a kind of micro-wave oven according to claim 1 adjusts circuit, which is characterized in that the unilateal conduction circuit includes two
Pole pipe or thyristor.
4. a kind of micro-wave oven according to claim 1 adjusts circuit, which is characterized in that the micro-wave oven adjusts circuit and also wraps
Include power circuit；
The input terminal of the power circuit is connected to AC power, and the output end of the power circuit is connected to the transformer
Armature winding, the power circuit is for driving the transformer to work.
5. a kind of micro-wave oven according to claim 4 adjusts circuit, which is characterized in that the power circuit includes rectification filter
Wave circuit and switching circuit；
The input terminal of the current rectifying and wave filtering circuit is connected to AC power, and the output end of the current rectifying and wave filtering circuit is connected to described
The input terminal of switching circuit, the output end of the switching circuit are connected to the armature winding of the transformer.
6. a kind of micro-wave oven according to claim 5 adjusts circuit, which is characterized in that the current rectifying and wave filtering circuit includes bridge
Formula rectification circuit and filter capacitor；
The input terminal of the bridge rectifier is connected to AC power, and the output end of the bridge rectifier is connected to described
The input terminal of switching circuit；The filter capacitor is connected in parallel on the output end of the bridge rectifier.
7. a kind of micro-wave oven according to claim 5 adjusts circuit, which is characterized in that the switching circuit includes that series connection connects
The power switch tube and resonant capacitance connect.
8. a kind of micro-wave oven according to claim 7 adjusts circuit, which is characterized in that the power switch tube is insulated gate
Bipolar transistor or metal oxide semiconductor field effect tube.
9. a kind of micro-wave oven, which is characterized in that the micro-wave oven includes that any micro-wave ovens of claim 1-8 adjust electricity
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820233861.8U CN207939781U (en) | 2018-02-09 | 2018-02-09 | A kind of micro-wave oven adjusts circuit and micro-wave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820233861.8U CN207939781U (en) | 2018-02-09 | 2018-02-09 | A kind of micro-wave oven adjusts circuit and micro-wave oven |
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| CN207939781U true CN207939781U (en) | 2018-10-02 |
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| CN201820233861.8U Active CN207939781U (en) | 2018-02-09 | 2018-02-09 | A kind of micro-wave oven adjusts circuit and micro-wave oven |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113677056A (en) * | 2021-08-16 | 2021-11-19 | 深圳市振邦智能科技股份有限公司 | Quick starting method of variable frequency microwave oven and readable storage medium |
-
2018
- 2018-02-09 CN CN201820233861.8U patent/CN207939781U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113677056A (en) * | 2021-08-16 | 2021-11-19 | 深圳市振邦智能科技股份有限公司 | Quick starting method of variable frequency microwave oven and readable storage medium |
| CN113677056B (en) * | 2021-08-16 | 2023-09-19 | 深圳市振邦智能科技股份有限公司 | Quick starting method of variable frequency microwave oven and readable storage medium |
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