CN114401563B - Heater - Google Patents
Heater Download PDFInfo
- Publication number
- CN114401563B CN114401563B CN202111504710.4A CN202111504710A CN114401563B CN 114401563 B CN114401563 B CN 114401563B CN 202111504710 A CN202111504710 A CN 202111504710A CN 114401563 B CN114401563 B CN 114401563B
- Authority
- CN
- China
- Prior art keywords
- induction heating
- circuit
- portable induction
- fixedly connected
- zero
- 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.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 77
- 230000006698 induction Effects 0.000 claims abstract description 62
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 10
- 210000004899 c-terminal region Anatomy 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000006378 damage Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 206010020649 Hyperkeratosis Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
-
- 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
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
-
- 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
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses a heater, which relates to the technical field of metal heating, and comprises a portable induction heating shell, wherein a protective net is fixedly arranged on one side of the portable induction heating shell, a cooling fan is fixedly connected inside the protective net, a power switch is movably arranged at the bottom end of one side of the portable induction heating shell, and foot pad supporting blocks are symmetrically and fixedly connected at the bottom of the portable induction heating shell. The invention adopts the novel zero-voltage soft start mode, frequency automatic tracking and phase adjustment circuit design technology based on the singlechip design, the induction heater obtains the optimal heating effect, improves the energy conversion efficiency, simultaneously improves the electrical performance reliability of the product, fully utilizes the combination of software and hardware, realizes the optimal heating effect of the system through the rectification control, the zero-voltage soft start mode, the frequency automatic tracking and the phase adjustment, and meets the technical requirements of the reliability of the design.
Description
Technical Field
The invention relates to the technical field related to metal heating, in particular to a heater.
Background
The new generation high frequency induction heating power supply based on the SCM control design utilizes the vortex generated by the high frequency induction coil to heat the workpiece according to the high frequency electromagnetic induction principle and Joule Lenz theorem, has the advantages of high heating speed, high heat efficiency, no flame generation and no environmental pollution, is widely applied to the fields of industrial and civil rapid metal heating and the like, and is greatly different from the traditional hand-held portable induction heater.
In China, patent application number: CN201710228879.9 discloses an electric heater, although the electric heating pipe of the electric heater is isolated from the fluid to be heated through a partition board, so that the electric heater is prevented from directly contacting the fluid flowing through the inside of the box body, potential safety hazards such as electric leakage in the fluid can be avoided, and the safety and reliability of the electric heater are improved.
Therefore, it is necessary to provide a heater to solve the above problems.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a heater, which solves the problems that when the heater is used in metal heating, a zero-voltage soft start mode and frequency automatic tracking are difficult to realize, the volume and weight are large, the energy-saving effect is not high, the handheld operation is not very convenient, and meanwhile, the device is easy to break down and damage by voltage, and the durability is poor.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the utility model provides a heater, includes portable induction heating casing, one side fixed mounting of portable induction heating casing has the protection network, the inside fixedly connected with radiator fan of protection network, portable induction heating casing is located one side bottom movable mounting of radiator fan has switch, the bottom symmetry of portable induction heating casing is fixed with callus on the sole supporting shoe, one side fixedly connected with cable that portable induction heating casing is close to radiator fan, the one end that the cable kept away from portable induction heating casing is fixedly connected with triangle power plug;
the portable induction heating device comprises a portable induction heating shell, a hollow plate, a wire tube, an electrode sleeve, a heating switch and an induction heating coil, wherein the hollow plate is fixedly connected to one end of the portable induction heating shell, which is far away from a cable, the wire tube is fixedly connected to one side of the hollow plate, the electrode sleeve is movably installed at one end of the wire tube, which is far away from the portable induction heating shell, the heating switch is movably installed at one end of the bottom of the electrode sleeve, and the induction heating coil is movably installed at one side of the top of the electrode sleeve;
the portable induction heating shell comprises a single-phase bridge rectifier filter circuit, a zero-voltage soft start circuit and a frequency automatic tracking and phase adjusting circuit.
Optionally, the electrode sleeve is located the one end both sides movable mounting of induction heating coil has the screw thread locking lever, the one end of screw thread locking lever runs through the electrode sleeve and is located the inside one end movable mounting of electrode sleeve with induction heating coil.
Optionally, the one end fixedly connected with heating panel that induction heating coil was kept away from to the electrode holder, one side of portable induction heating casing is located the bottom fixedly connected with emergency start-stop switch of spool.
Optionally, the single-phase bridge rectifier filter circuit is a commercial power AC220V/50Hz through F1, L2, L3, BD1, C1-C6 and RV1.
Optionally, the zero-voltage soft start circuit feeds back an AC sine wave signal to U1 through the photocoupler PC1 and a peripheral circuit thereof, and when the phase angle is in a zero-voltage state at 0/180/360 degrees through detection and analysis of the U1, the U1 outputs a signal to the driving chip U2, so as to realize soft start of mains supply zero-crossing detection, reduce impact damage of surge current to power devices in the circuit at the moment of starting, improve the reliability of circuit operation, enable the energy of a load input by the rectifying circuit to be gradually increased, enable the load to generate resonance, and the U1 peripheral circuit and the MCU soft start program control the IGBT commutation operation.
Optionally, the U1 is a single chip microcomputer control IC, and has main functions: the method comprises the steps of controlling a starting time sequence, a closing time sequence, frequency phase locking, overcurrent protection, over-temperature protection, fan control, LED lamp state display, mains supply zero crossing detection and U2 being a high-speed IGBT driving chip.
Optionally, the U4 is a three-way 3-input nor gate digital logic chip IC: the nor gate outputs a low level when any one or more of the inputs are high, outputs a high level only when all of the inputs are low, the high level is a logic "1", and the low level is a logic "0".
Optionally, the AC220/50HZ alternating current is filtered through a common mode inductor L2A/L3A and then is connected to a T5 rectifying module, DC+15V is output after rectification, and the DC+15V supplies power to other 2 DC to DC modules.
Optionally, the output +3.3V and +12V output voltages, 3 groups of DC output voltages (15V/12V/3.3V) in the circuit provide basic working power for the IC, the cooling fan and other control circuits, and the other path is rectified by the BD1 bridge stack and then supplied to the primary of the transformer for the converter work of IGBT tubes Q1 and Q2 power devices.
(III) beneficial effects
The invention provides a heater, which has the following beneficial effects:
1. the invention adopts the novel zero-voltage soft start mode based on the singlechip design, the frequency automatic tracking and phase adjusting circuit design technology, the induction heater obtains the optimal heating effect, the energy conversion efficiency is improved, the electrical performance reliability of the product is also improved, the volume of the equipment is reduced, the weight of workers in use is avoided, the energy consumption is increased, and the working efficiency is reduced.
2. The invention fully utilizes the combination of software and hardware, realizes the optimal heating effect of the system through a rectification control, a zero-voltage soft start mode, frequency automatic tracking and phase adjustment, meets the technical requirements of reliability of design, improves the internal heat dissipation capacity of equipment, reasonably utilizes current, avoids breakdown damage to the device due to overlarge local voltage, and effectively prolongs the service life of the equipment.
3. The invention detects load sinusoidal current from parallel resonance branch circuit through frequency automatic tracking and phase adjusting circuit, which is composed of U1 peripheral circuit, U2 peripheral circuit and Q5-Q8 peripheral circuit, to obtain square wave signal with same phase to sinusoidal current and to be added at synchronous end of MCU phase-locked loop, to determine sweep frequency range and center frequency of sweep frequency through software closed loop algorithm, MCU output switch signal will keep synchronous with resonance current to obtain optimal heating effect.
Drawings
FIG. 1 is a schematic side elevational view of the structure of the present invention;
FIG. 2 is a schematic view of the front perspective view of the structure of the present invention;
FIG. 3 is a schematic view of the rear perspective view of the structure of the present invention;
FIG. 4 is a schematic view of the bottom perspective of the structure of the present invention;
FIG. 5 is a schematic diagram of the first circuit operation principle of the structure of the present invention;
FIG. 6 is a schematic diagram of the second circuit operation principle of the structure of the present invention;
FIG. 7 is a schematic diagram of the control principle of the structure of the present invention;
FIG. 8 is a schematic diagram of an AC zero voltage waveform of the present invention;
fig. 9 is a schematic diagram of the principle of AC power zero voltage detection feedback control of the structure of the present invention.
In the figure: 1. a portable induction heating housing; 2. a heat radiation fan; 3. a protective net; 4. a power switch; 5. a foot pad support block; 6. a cable; 7. triangular power plug; 8. a hollowed-out plate; 9. a conduit; 10. an electrode sleeve; 12. a heating switch; 13. a threaded locking rod; 14. an induction heating coil; 15. an emergency start-stop switch; 16. and a heat dissipation plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to the invention, as shown in fig. 1-9, a technical scheme is provided:
the utility model provides a heater, including portable induction heating casing 1, one side fixed mounting of portable induction heating casing 1 has protection network 3, the inside fixedly connected with radiator fan 2 of protection network 3, portable induction heating casing 1 is located one side bottom movable mounting of radiator fan 2 has switch 4, the bottom symmetry of portable induction heating casing 1 is fixed with callus on the sole supporting shoe 5, one side fixedly connected with cable 6 of portable induction heating casing 1 near radiator fan 2, the one end fixedly connected with triangle power plug 7 of cable 6 keeping away from portable induction heating casing 1, protection network 3 is used for the outside protection to radiator fan 2, avoid the hand contact to produce harm in use;
the portable induction heating shell 1 is fixedly connected with the hollowed-out plate 8 at one end far away from the cable 6, one side of the hollowed-out plate 8 is fixedly connected with the wire tube 9, one end of the wire tube 9 far away from the portable induction heating shell 1 is movably provided with the electrode sleeve 10, one end of the bottom of the electrode sleeve 10 is movably provided with the heating switch 12, one side of the top of the electrode sleeve 10 is movably provided with the induction heating coil 14, one end of the induction heating coil 14 positioned in the electrode sleeve 10 is provided with a threaded hole matched with the threaded locking rod 13, and the stability in heating use is improved;
the control circuit comprises a single-phase bridge rectifier filter circuit, a zero-voltage soft start circuit and a frequency automatic tracking and phase adjusting circuit in the portable induction heating shell 1.
As an alternative solution of the invention: the electrode sleeve 10 is located the one end both sides movable mounting of induction heating coil 14 and has screw thread locking pole 13, and the one end of screw thread locking pole 13 runs through electrode sleeve 10 and is located the inside one end movable mounting of electrode sleeve 10 with induction heating coil 14, and electrode sleeve 10 is used for the one end installation to induction heating coil 14, makes things convenient for the handheld use of staff, and installs small-size exhaust fan in the heating panel 16 of electrode sleeve 10 one end, is convenient for with inside accumulational heat discharge, prevents in use overheated damage internal circuit.
As an alternative solution of the invention: one end of the electrode sleeve 10, which is far away from the induction heating coil 14, is fixedly connected with a heat radiation plate 16, one side of the portable induction heating shell 1 is positioned at the bottom of the wire tube 9 and is fixedly connected with an emergency start-stop switch 15, and the emergency start-stop switch 15 is used for forcibly turning off equipment when the equipment fails in use, so that the personal safety of staff is ensured.
As an alternative solution of the invention: the single-phase bridge rectifier filter circuit is characterized in that commercial power AC220V/50Hz passes through F1, L2, L3, BD1, C1-C6 and RV1.
As an alternative solution of the invention: the zero-voltage soft start circuit is characterized in that an AC sine wave alternating current signal is fed back to U1 through a photoelectric coupler PC1 and a peripheral circuit thereof, when a phase angle is in a zero voltage state in 0/180/360 degree through U1 detection analysis, the U1 outputs the signal to a driving chip U2, so that soft start of mains supply zero-crossing detection is realized, impact damage of surge current to power devices in the circuit at the moment of starting is reduced, reliability of circuit operation is improved, energy input to a load by a rectifying circuit is gradually increased, so that resonance is generated by the load, the U1 peripheral circuit and an MCU soft start program control IGBT commutation operation, in the period of 1 alternating current sine wave in fig. 8, a first zero point is a phase angle of 0 degree, a phase angle between the first zero point and a second zero point is a phase angle of highest output of AC voltage, the phase angle of 0/180/360 degree is optimal zero-point starting voltage, the device is not best started and is easy to be damaged, the zero-voltage soft start is detected, the phase angle of the AC sine wave is started at the zero voltage, the phase angle of 0/45/90/180/270/360 degrees, and the AC sine wave phase angle is only at the zero point is started, the best, and the impact on the circuit is the best in the moment of starting is small, and the device is very bad when the phase angle is started.
As an alternative solution of the invention: u1 is a singlechip control IC, and has the main functions of: the method comprises the steps of controlling a starting time sequence, a closing time sequence, frequency phase locking, overcurrent protection, over-temperature protection, fan control, LED lamp state display, mains supply zero crossing detection and U2 being a high-speed IGBT driving chip.
As an alternative solution of the invention: u4 is three-way 3-input NOR gate digital logic chip IC: the nor gate outputs a low level when any one or more of the inputs are high, outputs a high level only when all of the inputs are low, the high level is a logic "1", and the low level is a logic "0".
As an alternative solution of the invention: the AC220/50HZ alternating current is filtered through a common mode inductor L2A/L3A and then is connected to a T5 rectifying module, DC+15V is output after rectification, and the DC+15V supplies power to other 2 DC to DC modules.
As an alternative solution of the invention: and outputting +3.3V and +12V output voltages, wherein 3 groups of DC output voltages (15V/12V/3.3V) in the circuit provide basic working power supply for an IC, a radiator fan and other control circuits, and the other path of DC output voltages is rectified by a BD1 bridge pile and then is sent to a primary transformer for converter operation of IGBT (insulated gate bipolar transistor) Q1 and Q2 power devices.
Working principle: when the intelligent control device works, U1 is a singlechip control processor, feedback signals of circuit modules are connected to an input port, the feedback signals are processed and then output signals of the output port, the circuit modules are controlled to work, U1 is formed by connecting a DRI-A terminal pin and a DRI-B terminal pin to output PMW high-frequency square wave signals, the PMW high-frequency square wave signals are connected to a U2 input end, the signals are also connected to 12 pins and 8 pins of U4 in parallel, a U4 logic chip works in cooperation with U1, a frequency automatic tracking feedback signal formed by a Q5-Q8 peripheral circuit is also connected to the U4 input end for logic signal analysis processing, the U1 can synchronously and timely adjust the duty ratio of an output PWM high-frequency signal according to information fed back by the circuit, the PMW signal is amplified by a U2 high-speed IGBT driving chip, the output high-frequency switching voltage is respectively connected with the control G terminals of IGBT tubes Q1 and Q2 through R3, the IGBT tube G has high-frequency switch control voltage, and the CE pole can conduct on and off work, and the current flows from the high-voltage C terminal to the low-voltage E terminal when the CE pole is conducted, and the work of the IGBT tube can be controlled.
The C terminal of the IGBT tube is connected with the primary terminal of the main transformer T1, the PFC inductor L6 connected with the middle tap terminal is connected with the positive terminal of the BD1 rectifying circuit to form a main power supply loop, the C7, C8, C9 and the primary T1 form a resonant loop, and the secondary output of the T1 is connected with a high-frequency induction heating coil through an electrode to perform eddy-current induction heating on a workpiece.
To sum up: the induction heater obtains the optimal heating effect by adopting the novel zero-voltage soft start mode, frequency automatic tracking and phase adjustment circuit design technology based on the singlechip design, improves the energy conversion efficiency, simultaneously improves the electrical performance reliability of the product, fully utilizes the combination of software and hardware, realizes the optimal heating effect of the system by the rectification control, the zero-voltage soft start mode, frequency automatic tracking and phase adjustment, and meets the technical requirement of the reliability of the design.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (4)
1. A heater comprising a portable induction heating housing (1), characterized in that:
one side of the portable induction heating shell (1) is fixedly provided with a protective net (3), the inside of the protective net (3) is fixedly connected with a cooling fan (2), one side bottom end of the portable induction heating shell (1) which is positioned on the cooling fan (2) is movably provided with a power switch (4), the bottom of the portable induction heating shell (1) is symmetrically fixed with a foot pad supporting block (5), one side of the portable induction heating shell (1) which is close to the cooling fan (2) is fixedly connected with a cable (6), and one end of the cable (6) which is far away from the portable induction heating shell (1) is fixedly connected with a triangular power plug (7);
one end of the portable induction heating shell (1) far away from the cable (6) is fixedly connected with a hollowed-out plate (8), one side of the hollowed-out plate (8) is fixedly connected with a wire tube (9), one end of the wire tube (9) far away from the portable induction heating shell (1) is movably provided with an electrode sleeve (10), one end of the bottom of the electrode sleeve (10) is movably provided with a heating switch (12), and one side of the top of the electrode sleeve (10) is movably provided with an induction heating coil (14);
the portable induction heating shell (1) comprises a single-phase bridge rectifier filter circuit, a zero-voltage soft start circuit and a frequency automatic tracking and phase adjusting circuit;
the zero-voltage soft start circuit enables an AC sine wave alternating current signal to be fed back to U1 through a photoelectric coupler PC1 and a peripheral circuit thereof, the U1 outputs a signal to a driving chip U2 when the phase angle is in a zero-voltage state at 0/180/360 degrees through detection and analysis of the U1, so that soft start of mains supply zero-crossing detection is realized, the zero-voltage soft start circuit enables a trigger angle through a rectifying circuit to be gradually reduced, energy input into a load by the rectifying circuit is gradually increased, so that resonance is generated by the load, and IGBT commutation work is controlled through the peripheral circuit of the photoelectric coupler PC1, the U1 peripheral circuit and an MCU soft start program;
u1 is singlechip control IC, and main function: controlling a starting time sequence, a shutdown time sequence, frequency phase locking, overcurrent protection, overtemperature protection, fan control, LED lamp state display, mains supply zero crossing detection and U2 as a high-speed IGBT driving chip;
u4 is three-way 3-input NOR gate digital logic chip IC: the nor gate outputs a low level when any one or more of the input terminals is a high level, outputs a high level only when all of the input terminals are low levels, the high level is a logic "1", and the low level is a logic "0";
AC220/50HZ alternating current is filtered through a common mode inductor L2A/L3A and then is connected to a T5 rectifying module, DC+15V is output after rectification, DC+15V supplies power to other 2 DC to DC modules, +3.3V and +12V output voltages are output, 3 groups of DC output voltages in the circuit provide basic working power for an IC, a radiator fan and other control circuits, and the other path of DC output voltages are rectified through a BD1 bridge pile and then supplied to the primary of a transformer for converting current of IGBT (insulated gate bipolar transistor) Q1 and Q2 power devices;
the U1 outputs PMW high-frequency square wave signals by two terminal pins of DRI-A and DRI-B, the PMW high-frequency square wave signals are connected to the input end of U2, the signals are also connected to pins 12 and 8 of U4 in parallel, a U4 logic chip cooperates with the U1 to work, a frequency automatic tracking feedback signal formed by Q5-Q8 peripheral circuits is also connected to the input end of U4 to carry out logic signal analysis processing, the U1 can synchronously and timely adjust the duty ratio of the output PWM high-frequency signals according to the information fed back by the circuits, the PMW signals are amplified by a U2 high-speed IGBT driving chip, the output high-frequency switching voltage is respectively connected with the control G terminals of IGBT tubes Q1 and Q2 through R2 and R3, the IGBT tube G is provided with high-frequency switch-on and switch-off control voltage, the CE pole can conduct on and off work, and current flows from the high-voltage C terminal to the low-voltage E terminal during on, and the current conversion work of the IGBT tube can be controlled.
2. A heater according to claim 1, wherein: the electrode sleeve (10) is located at two sides of one end of the induction heating coil (14), a threaded locking rod (13) is movably mounted at two sides of one end of the induction heating coil (14), and one end of the threaded locking rod (13) penetrates through the electrode sleeve (10) and is movably mounted at one end of the induction heating coil (14) located inside the electrode sleeve (10).
3. A heater according to claim 1, wherein: one end of the electrode sleeve (10) far away from the induction heating coil (14) is fixedly connected with a heat radiation plate (16), and one side of the portable induction heating shell (1) is fixedly connected with an emergency start-stop switch (15) at the bottom of the spool (9).
4. A heater according to claim 1, wherein:
the single-phase bridge rectifier filter circuit is characterized in that commercial power AC220V/50Hz passes through F1, L2, L3, BD1, C1-C6 and RV1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111504710.4A CN114401563B (en) | 2021-12-10 | 2021-12-10 | Heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111504710.4A CN114401563B (en) | 2021-12-10 | 2021-12-10 | Heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114401563A CN114401563A (en) | 2022-04-26 |
| CN114401563B true CN114401563B (en) | 2024-01-19 |
Family
ID=81226570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111504710.4A Active CN114401563B (en) | 2021-12-10 | 2021-12-10 | Heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114401563B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4562396A (en) * | 1984-07-02 | 1985-12-31 | General Electric Company | Phase-locked loop control of an induction motor drive |
| JPH03216989A (en) * | 1990-01-22 | 1991-09-24 | Sekisui Chem Co Ltd | High-frequency induction heating device |
| JPH11289762A (en) * | 1998-03-31 | 1999-10-19 | Murata Mfg Co Ltd | Dc-to-dc converter |
| CN203151780U (en) * | 2013-03-16 | 2013-08-21 | 无锡电炉有限责任公司 | IGBT (insulated gate bipolar transistor) induction heating power supply |
| CN203352842U (en) * | 2013-07-22 | 2013-12-18 | 山东乐航节能科技股份有限公司 | Induction heating equipment with frequency tracking circuit |
| CN103501555A (en) * | 2013-09-25 | 2014-01-08 | 电子科技大学 | Digital phase locking and frequency tracking electromagnetic induction heating power controller |
| CN104244479A (en) * | 2014-10-10 | 2014-12-24 | 北京金风科创风电设备有限公司 | Flexible induction heating power supply for assembling and disassembling fan bearing and control method thereof |
| CN204217149U (en) * | 2014-11-20 | 2015-03-18 | 郑州科创电子有限公司 | A kind of novel air-cooled IGBT induction heating power equipment |
| CN107135564A (en) * | 2017-07-02 | 2017-09-05 | 中国计量大学 | A kind of pulsed induction heating power of the digital frequency-tracking of modified |
| CN207968314U (en) * | 2018-03-27 | 2018-10-12 | 深圳市金三科电子有限公司 | Generation circuit is driven based on the PWM that alternating current synchronizes |
| CN112333863A (en) * | 2020-09-28 | 2021-02-05 | 东莞市洪晋实业有限公司 | IH heating control circuit and method based on alternating current zero crossing point zero voltage starting |
| CN212727470U (en) * | 2020-08-27 | 2021-03-16 | 东莞市陆文银机械设备有限公司 | Extremely fast heater |
-
2021
- 2021-12-10 CN CN202111504710.4A patent/CN114401563B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4562396A (en) * | 1984-07-02 | 1985-12-31 | General Electric Company | Phase-locked loop control of an induction motor drive |
| JPH03216989A (en) * | 1990-01-22 | 1991-09-24 | Sekisui Chem Co Ltd | High-frequency induction heating device |
| JPH11289762A (en) * | 1998-03-31 | 1999-10-19 | Murata Mfg Co Ltd | Dc-to-dc converter |
| CN203151780U (en) * | 2013-03-16 | 2013-08-21 | 无锡电炉有限责任公司 | IGBT (insulated gate bipolar transistor) induction heating power supply |
| CN203352842U (en) * | 2013-07-22 | 2013-12-18 | 山东乐航节能科技股份有限公司 | Induction heating equipment with frequency tracking circuit |
| CN103501555A (en) * | 2013-09-25 | 2014-01-08 | 电子科技大学 | Digital phase locking and frequency tracking electromagnetic induction heating power controller |
| CN104244479A (en) * | 2014-10-10 | 2014-12-24 | 北京金风科创风电设备有限公司 | Flexible induction heating power supply for assembling and disassembling fan bearing and control method thereof |
| CN204217149U (en) * | 2014-11-20 | 2015-03-18 | 郑州科创电子有限公司 | A kind of novel air-cooled IGBT induction heating power equipment |
| CN107135564A (en) * | 2017-07-02 | 2017-09-05 | 中国计量大学 | A kind of pulsed induction heating power of the digital frequency-tracking of modified |
| CN207968314U (en) * | 2018-03-27 | 2018-10-12 | 深圳市金三科电子有限公司 | Generation circuit is driven based on the PWM that alternating current synchronizes |
| CN212727470U (en) * | 2020-08-27 | 2021-03-16 | 东莞市陆文银机械设备有限公司 | Extremely fast heater |
| CN112333863A (en) * | 2020-09-28 | 2021-02-05 | 东莞市洪晋实业有限公司 | IH heating control circuit and method based on alternating current zero crossing point zero voltage starting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114401563A (en) | 2022-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108964474A (en) | A kind of three mode rectification topologies based on LLC resonant converter | |
| CN202475843U (en) | Sine-wave constant-current variable-frequency dimmer | |
| TW201246774A (en) | Circuit for converting a direct current voltage to an alternating current voltage | |
| CN114401563B (en) | Heater | |
| CN109004850B (en) | Half-bridge active power factor correction circuit, variable frequency controller and power supply circuit | |
| CN202009335U (en) | Three-phase large-power low-voltage large-current high-frequency inverting and rectifying device | |
| CN201002169Y (en) | LGK type inversion plasma cutting power supply | |
| CN211378312U (en) | LED drive circuit of transformer substation | |
| CN202106127U (en) | CPU-controlled high-power portable electric welding machine | |
| CN201002166Y (en) | High-frequency IGBT inversion type hand welding power source | |
| CN210431215U (en) | High-frequency chopping soft-switching voltage regulating circuit | |
| CN114039391A (en) | Large-current starting storage battery charger adopting microprocessor control technology | |
| CN208904757U (en) | One kind three into three goes out ups power | |
| CN208739040U (en) | Electronic control transformer | |
| CN208782738U (en) | It is a kind of based on magnetic switch control distributed electrical source device, charging pile, charger, protection circuit device | |
| CN102611329A (en) | High frequency inversion rectifying device for three-phase high-power low voltage and large current and method thereof | |
| CN205709660U (en) | A kind of drive circuit of elevator brake | |
| CN114578739B (en) | DC voltage stabilizing circuit utilizing energy of alternating current trough and working method | |
| CN204497988U (en) | A kind of switch power source driving circuit | |
| CN2182505Y (en) | Whole-transistor type high frequency electric source apparatus for induction heating use | |
| CN219499254U (en) | Fan lamp | |
| CN216927412U (en) | Direct current voltage stabilizing circuit utilizing alternating current wave trough energy | |
| CN219123976U (en) | Change-over switch system of energy storage converter | |
| CN102218584A (en) | Portable central processing unit (CPU) controlled high-power electric welding machine | |
| CN219322140U (en) | Control system for driving heat pump compressor unit by combining photovoltaic power and commercial power |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |