CN202818657U - Portable induction heater - Google Patents
Portable induction heater Download PDFInfo
- Publication number
- CN202818657U CN202818657U CN 201220517793 CN201220517793U CN202818657U CN 202818657 U CN202818657 U CN 202818657U CN 201220517793 CN201220517793 CN 201220517793 CN 201220517793 U CN201220517793 U CN 201220517793U CN 202818657 U CN202818657 U CN 202818657U
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- inverter
- induction heater
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Abstract
The utility model relates to an electric-heating device and specifically provides a portable induction heater. The portable induction heater comprises an output transformer, a heater coil, an inverter and a BUCK chopper pressure reducing regulator. The portable induction heater is characterized in that an input end voltage transformer is in parallel connection with the input end of the inverter; an input end current transformer is serially connected between the input end of the inverter and the output end of the BUCK chopper pressure reducing regulator; an output end voltage transformer is in parallel connection with the output end of the output transformer; and an output end current transformer is serially connected between the output end of the output transformer and the heater coil. The induction heater has a compact structure and enables high electric energy conversion efficiency. The portable induction heater can be powered not only by grid power supplies but also by storage batteries or photovoltaic batteries. The induction heater can be widely applied in occasions for quenching and heating metal devices.
Description
Technical field
The utility model relates to a kind of electric heater unit, specifically a kind of portable induction heating equipment.
Background technology
Induction heating is to utilize electromagnetic induction phenomenon that electric energy conversion is heat energy, is usually used in the heat treated field of metal parts.Put a coil in the metallic conductor outside.When alternating current passes into induction coil, will produce alternating flux in the induction coil, make the workpiece in the induction coil be subject to electromagnetic induction and produce induced potential.Induced potential produces induced current in workpiece makes inside workpiece begin heating, the basic principle of Here it is induction heating.Simulation control is all adopted in the control of traditional induction heating power, but there is inherent shortcoming in analog control circuit, such as problems such as the precision inconsistency of component parameters, component ageings.In addition, simulate integrated control chip and also have the problems such as power consumption is large, integrated level is low, control underaction, versatility is not strong.Shortcoming is as follows: because adopting a large amount of dispersive elements and circuit board, cause reliability decrease, debug difficulties, updating and upgrading of a product difficulty, some good control strategy of system to realize difficulty by analogy method, as repeat control, fuzzy control etc.In addition, power unit adopts single AC power usually, and application is restricted.
Summary of the invention
The purpose of this utility model provides a kind of compact conformation, good reliability, automatically tracking frequency output, can change the portable induction heating equipment of power output, the multiple supply power mode of employing.
The utility model is that the technical scheme that the technical solution problem adopts is:
A kind of portable induction heating equipment described in the utility model comprises output transformer, be connected to the heater coil of output transformer output, be connected to the output transformer input inverter, be connected to the BUCK chopping depressuring adjuster of inverter input terminal, it is characterized in that: the input at inverter is parallel with the input terminal voltage instrument transformer, is in series with the input current transformer between the output of the input of inverter and BUCK chopping depressuring adjuster; Output at output transformer is parallel with the output end voltage instrument transformer, is in series with the output end current instrument transformer between the output of output transformer and heater coil.
The input of described BUCK chopping depressuring adjuster is connected with bridge rectifier, and the input of described bridge rectifier is parallel with interlock switch.
After adopting technique scheme, this induction heating equipment compact conformation can carry installation flexibly, except can using the electric network source power supply, can also use storage battery or supplying power for photovoltaic cell.Adopt DSP as master controller, by gathering resonance frequency, automatically tracking frequency output can change power output.Adopt IGBT as switching device, realized the intellectuality of system, improved the conversion efficiency of electric energy.This product can be widely used in the occasions such as the quenching, heating of metal device.
Description of drawings
Fig. 1 is the electrical schematic diagram of an embodiment of the utility model.
Embodiment
As shown in Figure 1, a kind of portable induction heating equipment described in the utility model comprise output transformer T2, be connected to output transformer T2 output heater coil L3, be connected to output transformer T2 input inverter B, be connected to the BUCK chopping depressuring adjuster V of inverter input terminal.Described inverter B is formed in parallel after being connected in twos by insulated gate bipolar transistor VT7 and VT8, VT9 and VT10 again, a diode in parallel between the emitting stage of each insulated gate bipolar transistor and the current collection level, the input of output transformer T2 is connected respectively to the common port of two insulated gate bipolar transistors series connection.BUCK chopping depressuring adjuster V is comprised of insulated gate bipolar transistor VB5, VB6 and peripheral cell, can reduce the requirement of single insulated gate bipolar transistor current class, the output current of single chopper is half of total current, the ripple frequency of output current doubles simultaneously, can reduce L, the C parameter of filter circuit.Input at inverter B is parallel with input terminal voltage instrument transformer TV1, and the voltage sampling that is used for dc terminal detects; Be in series with input current transformer TA1 between the output of the input of inverter B and BUCK chopping depressuring adjuster V, the current sampling that is used for dc terminal detects; Output at output transformer T2 is parallel with output end voltage instrument transformer TV2, realizes the Phase Tracking of output voltage; Between the output of output transformer T2 and heater coil L3, be in series with output end voltage current transformer TA2, be used for the Phase Tracking of output end current.Frequency-tracking and FEEDBACK CONTROL, the Phase Tracking of realization output voltage and electric current makes its phase difference ≈ 0, and power factor PF ≈ 1 obtains maximum power and efficient.Frequency-tracking can adopt multiple different version from feedback control circuit, and this repeats no more again.
In addition, the input of described BUCK chopping depressuring adjuster V is connected with bridge rectifier, and the input of described bridge rectifier is parallel with interlock switch S2, S3.The input of interlock switch S2, S3 connects respectively AC power, storage battery or photovoltaic cell, guarantees at the synchronization one group of switch of can only starting shooting, and realizes that multiple supply power mode switches flexibly.
Claims (2)
1. portable induction heating equipment, comprise output transformer (T2), be connected to output transformer (T2) output heater coil (L3), be connected to output transformer (T2) input inverter (B), be connected to the BUCK chopping depressuring adjuster (V) of inverter input terminal, it is characterized in that: the input at inverter (B) is parallel with input terminal voltage instrument transformer (TV1), is in series with input current transformer (TA1) between the output of the input of inverter (B) and BUCK chopping depressuring adjuster (V); Output at output transformer (T2) is parallel with output end voltage instrument transformer (TV2), is in series with output end current instrument transformer (TA2) between the output of output transformer (T2) and heater coil (L3).
2. a kind of portable induction heating equipment according to claim 1, it is characterized in that: the input of described BUCK chopping depressuring adjuster (V) is connected with bridge rectifier, and the input of described bridge rectifier is parallel with interlock switch (S2, S3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220517793 CN202818657U (en) | 2012-10-11 | 2012-10-11 | Portable induction heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220517793 CN202818657U (en) | 2012-10-11 | 2012-10-11 | Portable induction heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202818657U true CN202818657U (en) | 2013-03-20 |
Family
ID=47877455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220517793 Expired - Fee Related CN202818657U (en) | 2012-10-11 | 2012-10-11 | Portable induction heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202818657U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110943626A (en) * | 2019-10-28 | 2020-03-31 | 湖北工业大学 | Ultrasonic power supply based on cascade Buck technology |
| CN111214693A (en) * | 2020-03-06 | 2020-06-02 | 深圳国创名厨商用设备制造有限公司 | Self-adaptive magnetoelectric induction air disinfection method |
| CN117559833A (en) * | 2024-01-08 | 2024-02-13 | 上海盛迪瓦特电气有限公司 | Induction heating power supply control method and induction heating power supply |
-
2012
- 2012-10-11 CN CN 201220517793 patent/CN202818657U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110943626A (en) * | 2019-10-28 | 2020-03-31 | 湖北工业大学 | Ultrasonic power supply based on cascade Buck technology |
| CN111214693A (en) * | 2020-03-06 | 2020-06-02 | 深圳国创名厨商用设备制造有限公司 | Self-adaptive magnetoelectric induction air disinfection method |
| CN117559833A (en) * | 2024-01-08 | 2024-02-13 | 上海盛迪瓦特电气有限公司 | Induction heating power supply control method and induction heating power supply |
| CN117559833B (en) * | 2024-01-08 | 2024-04-19 | 上海盛迪瓦特电气有限公司 | Induction heating power supply control method and induction heating power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20151011 |
|
| EXPY | Termination of patent right or utility model |