CN202261886U - Improved medium-frequency induction furnace - Google Patents
Improved medium-frequency induction furnace Download PDFInfo
- Publication number
- CN202261886U CN202261886U CN2011203498275U CN201120349827U CN202261886U CN 202261886 U CN202261886 U CN 202261886U CN 2011203498275 U CN2011203498275 U CN 2011203498275U CN 201120349827 U CN201120349827 U CN 201120349827U CN 202261886 U CN202261886 U CN 202261886U
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- CN
- China
- Prior art keywords
- inverter bridge
- power
- induction furnace
- frequency induction
- improved medium
- 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.)
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Abstract
The utility model discloses an improved medium-frequency induction furnace which consists of an inverter bridge a (1), an inverter bridge b (2) and a multiplier integration block (3). The improved medium-frequency induction furnace is characterized in that the inverter bridge a (1) and inverter bridge b (2) are used for respectively outputting given voltages, and the multiplier integration block (3) is connected with the inverter bridge a (1) and inverter bridge b (2). When a load is connected with a resonator in series, a rectifier bridge in a variable-frequency power supply works under full-conduction state, and the power factor of a system is above 0.95, so that a novel reactive power compensation is formed; power control and a multi-power-supply-distributing technology are organically combined, so that power can be distributed to a plurality of inverters within a rated range in an electrodeless way by a set of rectification system; and then the inverters are used for regulating the power to the induction furnace in an electrodeless way according to the technological requirement. The improved medium-frequency induction furnace has obvious energy-saving effect, and can save 22% of energy in whole.
Description
Technical field
The utility model relates to a kind of medium-frequency induction furnace, relates in particular to a kind of modified model medium-frequency induction furnace.
Background technology
The complete sets of equipment of medium-frequency induction furnace; Be becoming direct current behind the three-phase main-frequency AC rectification; Become adjustable electric current of intermediate frequency to direct current again, supply with, in induction coil, produce the highdensity magnetic line of force by the intermediate frequency alternating current that flows through in electric capacity and the induction coil; And the metal material that holds in the cutting induction coil, in metal material, produce very big eddy current.This eddy current has some character of electric current of intermediate frequency equally, and promptly the free electron of metal self will produce heat having in the metallic object of resistance to flow.For example; Be placed on a metal cylinder in the induction coil of alternation electric current of intermediate frequency; Metal cylinder does not directly contact with induction coil, and the hot-wire coil self-temperature is very low, but that periphery is heated to is rubescent; Even fusing, and the power that this rubescent speed with fusing needs only regulating frequency size and electric current just can realize.If cylinder is placed on hub of a spool, the temperature of cylinder periphery is the same so, and cylinder heating and fusing do not produce pernicious gas, optic pollution environment yet.
In the prior art, the electric current of intermediate frequency melting technique generally all adopts one-to-one or two to drag a pattern, and this traditional method is lower to the utilance of electric energy, and the colleague can not satisfy bigger foundry goods melting needs again, therefore need improve this shortcoming.
Summary of the invention
In order to solve above technical problem; The utility model provides a kind of energy-conservation, modified model medium-frequency induction furnace efficiently; Constitute by inverter bridge a (1), inverter bridge b (2), multiplier set piece (3); It is characterized in that inverter bridge a and inverter bridge b export given voltage respectively, the multiplier integrated package connects inverter bridge a and inverter bridge b.
The beneficial effect of the utility model is: during the load series resonance, the rectifier bridge in the variable frequency power supply is operated in all-pass and leads state, and the system power factor forms a kind of novel reactive power compensation more than 0.95; The combination of power control and many power supply distribution techniques, promptly a cover commutation system can be distributed to many inverters with the electric energy Wuji in rated range, and inverter is given electric induction furnace according to the arts demand electrodeless power regulating again; This utility model energy-saving effect is remarkable in addition, and integral body can reach energy-conservation 22% effect.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Inversion part is in series by inverter bridge a (1) and inverter bridge b (2), this series circuit in use, rectification circuit is in fully conducting state always, so power factor can be more than or equal to 0.95.Inverter bridge a (1) and inverter bridge b (2) respectively give the given output voltage of a 10V, and two given output voltages are controlled with a multiplier integrated package usually each other, when the given output voltage of inverter bridge a (1) not simultaneously:
Embodiment 1: when the given output voltage of inverter bridge a (1) was 1V, inverter bridge a (1) power output was 10% of a rated power, and the given output voltage maximum of inverter bridge b (2) this moment can reach 9V, and inverter bridge b (2) power output is 90% of a rated power.
Embodiment 2: when the given output voltage of inverter bridge a (1) was 10V, inverter bridge a (1) power output was 100% of a rated power, and this moment, inverter bridge b (2) power output was 0.
Embodiment 3: when the given output voltage of inverter bridge a (1) is 6V; Inverter bridge a (1) power output is 60% of a rated power; The maximum given output voltage of inverter bridge b (2) is 4V; Power output is 40% of a rated power, and by that analogy, inverter bridge a (1) and inverter bridge b (2) two body of heater power outputs can be distributed arbitrarily.
Claims (1)
1. modified model medium-frequency induction furnace; Constitute by inverter bridge a (1), inverter bridge b (2), multiplier set piece (3); It is characterized in that inverter bridge a (1) and inverter bridge b (2) export given voltage respectively, multiplier integrated package (3) connects inverter bridge a (1) and inverter bridge b (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203498275U CN202261886U (en) | 2011-09-19 | 2011-09-19 | Improved medium-frequency induction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203498275U CN202261886U (en) | 2011-09-19 | 2011-09-19 | Improved medium-frequency induction furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202261886U true CN202261886U (en) | 2012-05-30 |
Family
ID=46123059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203498275U Expired - Fee Related CN202261886U (en) | 2011-09-19 | 2011-09-19 | Improved medium-frequency induction furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202261886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113791664A (en) * | 2021-07-26 | 2021-12-14 | 广东电网有限责任公司广州供电局 | Power compensation device and power compensation method |
-
2011
- 2011-09-19 CN CN2011203498275U patent/CN202261886U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113791664A (en) * | 2021-07-26 | 2021-12-14 | 广东电网有限责任公司广州供电局 | Power compensation device and power compensation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20120919 |