CN102200305A - Microwave oven - Google Patents

Microwave oven Download PDF

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Publication number
CN102200305A
CN102200305A CN2011101911249A CN201110191124A CN102200305A CN 102200305 A CN102200305 A CN 102200305A CN 2011101911249 A CN2011101911249 A CN 2011101911249A CN 201110191124 A CN201110191124 A CN 201110191124A CN 102200305 A CN102200305 A CN 102200305A
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CN
China
Prior art keywords
winding
output
transformer
wave oven
current loop
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011101911249A
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Chinese (zh)
Inventor
梁伟国
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN2011101911249A priority Critical patent/CN102200305A/en
Publication of CN102200305A publication Critical patent/CN102200305A/en
Pending legal-status Critical Current

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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
    • 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
    • H05B6/662—Aspects related to the boost transformer of the microwave heating apparatus
    • 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
    • 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
    • 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
    • H05B6/80—Apparatus for specific applications
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/04—Heating using microwaves

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Microwave Tubes (AREA)

Abstract

The invention relates to a microwave oven which comprises a magnetic control pipe, a high-voltage transformer and a transformer, wherein the high-voltage transformer comprises a skeleton, a primary winding and a secondary winding; the transformer comprises an input winding and an output winding; the output winding and the cathode of the magnetic control pipe are connected to form a current loop, and the current loop is connected with the secondary winding. The microwave oven provided by the invention has the advantages of reasonable design, electricity is provided for the cathode of the magnetic control pipe through increasing the transformer, the phase difference of heating current of a filament winding and the output voltage of the secondary winding can be reduced to the greatest extent, the microwave output amount of the magnetic control pipe is improved, and regulation reaches the best effect by adding devices such as a phase shifter.

Description

A kind of micro-wave oven
Technical field
The present invention relates to a kind of micro-wave oven.
Background technology
About secondary general the output 2000VAC of existing a kind of high voltage transformer of microwave oven; and secondary windings one end is by contacting ground connection with transformer framework; therefore have a half-wave voltage-multiplying circuit in the secondary back of micro-wave oven; high-tension transformer charges to the electric capacity in the half-wave voltage-multiplying circuit earlier in the half period of a sine wave; output when utilizing other half reversal periods of high-tension transformer then; the voltage that stack had originally charged about electric 4000VAC of electric capacity composition makes its work to magnetron; for the high temperature that prevents high-tension transformer causes security incidents such as winding is on fire; generally between high-tension transformer secondary windings and high-voltage capacitance the series connection high-voltage fuse component; in when, image height taking place pressing diode breakdown etc. unusual when; the electric current of secondary windings surpasses the current limit of high-voltage fuse, and fuse will burn to play a protective role.Also has a kind of high voltage transformer of microwave oven, its secondary windings is directly exported enough voltage and is driven magnetron, connect a high pressure full-wave rectifier behind this secondary windings, the cathode output end of full-wave rectifier is connected with the ground of micro-wave oven, and the anode of magnetron also is to be electrically connected with the positive pole of full-wave rectifier by the ground of micro-wave oven is next.The high voltage transformer of microwave oven that also has a kind of frequency conversion, he can adopt half-wave or all-wave mode, be employed high-tension transformer be the micro-wave oven transformer of high frequency, because the number of turn of the secondary windings of high voltage transformer of microwave oven and Filament Winding differs hundred times, so bigger phase difference appears in the voltage of inducting on Filament Winding and secondary windings, bigger phase difference just appears in the heating current that is applied to voltage between the magnetron anode and cathode and Filament Winding, therefore, no matter use the micro-wave oven of which kind of high-tension transformer, its power output does not all reach maximum.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of power output that can allow reach maximized micro-wave oven as far as possible.
Above-mentioned purpose adopts following technical proposals to realize.
A kind of micro-wave oven, comprise magnetron, high-tension transformer and transformer, high-tension transformer comprises skeleton, elementary winding and secondary windings, and transformer comprises input winding and output winding, output winding and magnetron cathode connect and compose current loop, and this current loop is connected with secondary windings.
Technique scheme can be done following further perfect.
Described transformer also comprises a metallic framework or ferrite skeleton.The perhaps shared same skeleton of transformer and high-tension transformer.
The output of described secondary windings is provided with current protective device.
Be in series with phase shifter in the described current loop.
Described input windings in series has phase shifter.
Described high-tension transformer also includes Filament Winding, and two outputs of Filament Winding are connected in the current loop.
Described output winding two outputs connect two inputs of full-wave rectifier respectively, and two outputs of full-wave rectifier connect the two ends of storage capacitor respectively, and the two ends of storage capacitor connect and compose current loop with magnetron cathode simultaneously.
When high-tension transformer was full-wave rectification, described secondary windings two outputs were connected with full-wave rectifier two inputs, full-wave rectifier cathode output end ground connection, and the secondary windings output is connected in the current loop by the full-wave rectifier cathode output end.
When high-tension transformer is halfwave rectifier, described secondary windings one end ground connection, the other end is connected with high-voltage capacitance, kenetron, the kenetron output head grounding, the circuit between high-voltage capacitance and the high-voltage diode is connected in the current loop.
The present invention is reasonable in design, come the negative electrode of magnetron is powered by increasing a transformer, can reduce the phase difference of the output voltage of the heating current of Filament Winding and secondary windings as far as possible, improve the microwave output quantity of magnetron, increasing device such as phase shifter is exactly to allow adjust reach best effect.
Description of drawings
Fig. 1 is the electric diagram of embodiment 1.
Fig. 2 is the electric diagram of embodiment 2.
Fig. 3 is the electric diagram of embodiment 3.
Fig. 4 is the electric diagram of embodiment 4.
Fig. 5 is the electric diagram of embodiment 5.
Fig. 6 is the electric diagram of embodiment 6.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment 1; in conjunction with Fig. 1; a kind of micro-wave oven; comprise high-tension transformer 1, full-wave rectifier 13 and magnetron 14; high-tension transformer 1 comprises that again elementary winding 2, secondary windings 3 and skeleton A, elementary winding have input 7,8,9; secondary windings 3 outputs and full-wave rectifier 13 inputs are electrically connected, and secondary windings 3 is in series with current protective device 12, the cathode output end ground connection of magnetron 14 anodes and full-wave rectifier 13.
Micro-wave oven also includes a transformer 4, and transformer 4 comprises input winding 5, output winding 6 and skeleton B, and the negative electrode 15 of output winding 6, phase shifter 16 and magnetron 14 is formed current loop.
The cathode output end of full-wave rectifier 13 is electrically connected with current loop.
Skeleton A and skeleton B can be same skeletons or separate when the input winding all is connected with extraneous power supply with elementary winding.When input winding power supply derived from high-tension transformer, skeleton A and skeleton B must be separate.
Embodiment 2, and in conjunction with Fig. 2, embodiment 2 is that with the difference of embodiment 1 elementary winding 2 has only input 7 and 9, and the negative electrode 15 of output winding 6 and magnetron 14 is formed current loop, has cancelled phase shifter 16.
Embodiment 3, and in conjunction with Fig. 3, the difference of embodiment 3 and embodiment 2 is to import winding 5 and is connected with capacitive phase shifter 17, and the input power supply of importing winding 5 is carried out the phase place adjustment.
Embodiment 4, and in conjunction with Fig. 4, embodiment 4 is that with the difference of embodiment 3 high-tension transformer 1 also comprises Filament Winding 18, and Filament Winding 18 outputs are connected with the negative electrode 15 of magnetron.
Embodiment 5, in conjunction with Fig. 5, a kind of micro-wave oven, comprise high-tension transformer 1 and magnetron 14, high-tension transformer 1 comprises that again elementary winding 2, secondary windings 3 and skeleton A, elementary winding have input 7,9, secondary windings 3 one output head groundings, another output are connected with high pressure Arming Assembly 19, high-voltage capacitance 20, kenetron 21, kenetron 21 output head groundings.
Micro-wave oven also includes a transformer 4, transformer 4 comprises input winding 5, output winding 6 and skeleton B, input winding 5 has input 10,11, the output and magnetron 14 negative electrodes 15 of output winding 6 connect to form current loop, and the circuit between high-voltage capacitance and the high-voltage diode is connected in the current loop.Input winding 5 is connected with capacitive phase shifter 17, and the input power supply of importing winding 5 is carried out the phase place adjustment.
Skeleton A and skeleton B can be same skeletons or separate when the input winding all is connected with extraneous power supply with elementary winding.When input winding power supply derived from high-tension transformer, skeleton A and skeleton B must be separate.
Embodiment 6, in conjunction with Fig. 6, a kind of micro-wave oven, comprise high-tension transformer 1 and magnetron 14, high-tension transformer 1 comprises that again elementary winding 2, secondary windings 3 and skeleton A, elementary winding have input 7,9, secondary windings 3 one output head groundings, another output are connected with high pressure Arming Assembly 19, high-voltage capacitance 20, kenetron 21, kenetron 21 output head groundings.
Micro-wave oven also includes a transformer 4, transformer 4 comprises input winding 5, output winding 6 and skeleton B, input winding 5 has three inputs 10,11,24, the output of output winding 6 connects 22 liang of inputs of full-wave rectifier, full-wave rectifier two outputs connect storage capacitor 23, storage capacitor 23 two ends connect magnetron 14 negative electrodes 15, after handling, the output process full-wave rectifier 22 of output winding 6 and storage capacitor 23 become dc source, connect to form current loop with magnetron cathode 15 then
Circuit between high-voltage capacitance and the high-voltage diode is connected in the current loop.Input winding 5 is connected with capacitive phase shifter 17, and the input power supply of importing winding 5 is carried out the phase place adjustment.
Skeleton A and skeleton B can be same skeletons or separate when the input winding all is connected with extraneous power supply with elementary winding.When input winding power supply derived from high-tension transformer, skeleton A and skeleton B must be separate.
Inductive type phase shifter 16 in the foregoing description and capacitor type phase shifter 17 mainly are to realize the power supply of input magnetron cathode 15 is carried out phase shift.
The high-tension transformer of the foregoing description and the transformer of increase can be common transformers, also can be the variable-frequency power sources that is equivalent to common transformer, and wherein high-tension transformer can adopt the mode of half-wave or all-wave.

Claims (10)

1. micro-wave oven, comprise magnetron and high-tension transformer, high-tension transformer comprises skeleton A, elementary winding and secondary windings, it is characterized in that: also comprise a transformer, transformer comprises input winding and output winding, output winding and magnetron cathode connect and compose current loop, and this current loop is connected with secondary windings.
2. according to the described micro-wave oven of claim 1, it is characterized in that: described transformer also comprises skeleton B.
3. according to the described micro-wave oven of claim 2, it is characterized in that: described change skeleton B and skeleton A are same skeleton.
4. according to the described micro-wave oven of claim 1, it is characterized in that: the output of described secondary windings is provided with current protective device.
5. according to the described micro-wave oven of claim 1, it is characterized in that: be in series with phase shifter in the described current loop.
6. according to the described micro-wave oven of claim 1, it is characterized in that: described input windings in series has phase shifter.
7. according to the described micro-wave oven of claim 1, it is characterized in that: described high-tension transformer also includes Filament Winding, and two outputs of Filament Winding are connected in the current loop.
8. according to the described micro-wave oven of claim 1, it is characterized in that: described output winding two outputs connect two inputs of full-wave rectifier respectively, two outputs of full-wave rectifier connect the two ends of storage capacitor respectively, and the two ends of storage capacitor connect and compose current loop with magnetron cathode simultaneously.
9. according to the described micro-wave oven of claim 1, it is characterized in that: described secondary windings two outputs are connected with full-wave rectifier two inputs, full-wave rectifier cathode output end ground connection, the secondary windings output is connected in the current loop by the full-wave rectifier cathode output end.
10. according to the described micro-wave oven of claim 1, it is characterized in that: described secondary windings one output head grounding, another output is connected with high-voltage capacitance, kenetron, the kenetron output head grounding, and the circuit between high-voltage capacitance and the high-voltage diode is connected in the current loop.
CN2011101911249A 2011-05-19 2011-07-08 Microwave oven Pending CN102200305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011101911249A CN102200305A (en) 2011-05-19 2011-07-08 Microwave oven

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201120161671 2011-05-19
CN201120161671.8 2011-05-19
CN2011101911249A CN102200305A (en) 2011-05-19 2011-07-08 Microwave oven

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Publication Number Publication Date
CN102200305A true CN102200305A (en) 2011-09-28

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Family Applications (13)

Application Number Title Priority Date Filing Date
CN201110191143.1A Expired - Fee Related CN102200306B (en) 2011-05-01 2011-07-08 Micro-wave oven
CN201410846781.6A Expired - Fee Related CN104566538B (en) 2011-05-01 2011-07-08 Microwave oven
CN201410846588.2A Pending CN104566537A (en) 2011-05-19 2011-07-08 Microwave oven
CN2011101911249A Pending CN102200305A (en) 2011-05-19 2011-07-08 Microwave oven
CN201410846743.0A Expired - Fee Related CN104507193B (en) 2011-05-19 2011-07-08 Microwave oven
CN201410846760.4A Expired - Fee Related CN104501231B (en) 2011-05-19 2011-07-08 Micro-wave oven
CN201410846525.7A Expired - Fee Related CN104507191B (en) 2011-05-19 2011-07-08 Microwave oven
CN201410846905.0A Expired - Fee Related CN104456651B (en) 2011-05-19 2011-07-08 Microwave oven
CN201410846596.7A Expired - Fee Related CN104654380B (en) 2011-05-19 2011-07-08 Microwave oven
CN201410846685.1A Expired - Fee Related CN104501230B (en) 2011-05-19 2011-07-08 Microwave oven
CN201410846618.XA Expired - Fee Related CN104486858B (en) 2011-05-19 2011-07-08 Microwave oven
CN201410846541.6A Expired - Fee Related CN104501229B (en) 2011-05-19 2011-07-08 Micro-wave oven
CN201410846589.7A Expired - Fee Related CN104507192B (en) 2011-05-19 2011-07-08 Microwave oven

Family Applications Before (3)

Application Number Title Priority Date Filing Date
CN201110191143.1A Expired - Fee Related CN102200306B (en) 2011-05-01 2011-07-08 Micro-wave oven
CN201410846781.6A Expired - Fee Related CN104566538B (en) 2011-05-01 2011-07-08 Microwave oven
CN201410846588.2A Pending CN104566537A (en) 2011-05-19 2011-07-08 Microwave oven

Family Applications After (9)

Application Number Title Priority Date Filing Date
CN201410846743.0A Expired - Fee Related CN104507193B (en) 2011-05-19 2011-07-08 Microwave oven
CN201410846760.4A Expired - Fee Related CN104501231B (en) 2011-05-19 2011-07-08 Micro-wave oven
CN201410846525.7A Expired - Fee Related CN104507191B (en) 2011-05-19 2011-07-08 Microwave oven
CN201410846905.0A Expired - Fee Related CN104456651B (en) 2011-05-19 2011-07-08 Microwave oven
CN201410846596.7A Expired - Fee Related CN104654380B (en) 2011-05-19 2011-07-08 Microwave oven
CN201410846685.1A Expired - Fee Related CN104501230B (en) 2011-05-19 2011-07-08 Microwave oven
CN201410846618.XA Expired - Fee Related CN104486858B (en) 2011-05-19 2011-07-08 Microwave oven
CN201410846541.6A Expired - Fee Related CN104501229B (en) 2011-05-19 2011-07-08 Micro-wave oven
CN201410846589.7A Expired - Fee Related CN104507192B (en) 2011-05-19 2011-07-08 Microwave oven

Country Status (1)

Country Link
CN (13) CN102200306B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108601130A (en) * 2018-05-20 2018-09-28 深圳戴普森新能源技术有限公司 Magnetron power source circuit and control method, micro-wave oven

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Publication number Publication date
CN104501231B (en) 2016-09-07
CN104566538B (en) 2017-01-25
CN104507193B (en) 2016-04-13
CN104456651B (en) 2017-02-22
CN104507193A (en) 2015-04-08
CN104501229B (en) 2016-09-07
CN102200306A (en) 2011-09-28
CN104566537A (en) 2015-04-29
CN104501231A (en) 2015-04-08
CN104507191B (en) 2016-04-20
CN104507191A (en) 2015-04-08
CN104507192A (en) 2015-04-08
CN104486858A (en) 2015-04-01
CN104654380A (en) 2015-05-27
CN104501230A (en) 2015-04-08
CN104501229A (en) 2015-04-08
CN104456651A (en) 2015-03-25
CN102200306B (en) 2015-10-14
CN104566538A (en) 2015-04-29
CN104507192B (en) 2016-04-20
CN104501230B (en) 2016-08-17
CN104486858B (en) 2016-04-13
CN104654380B (en) 2017-04-19

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Application publication date: 20110928