EP0062926A1 - Appareil de chauffage par induction - Google Patents
Appareil de chauffage par induction Download PDFInfo
- Publication number
- EP0062926A1 EP0062926A1 EP82103183A EP82103183A EP0062926A1 EP 0062926 A1 EP0062926 A1 EP 0062926A1 EP 82103183 A EP82103183 A EP 82103183A EP 82103183 A EP82103183 A EP 82103183A EP 0062926 A1 EP0062926 A1 EP 0062926A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- output terminals
- matching board
- inductive heating
- heating coils
- heating device
- 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.)
- Granted
Links
Images
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
- H05B6/08—Control, e.g. of temperature, of power using compensating or balancing arrangements
Definitions
- the present invention relates to an inductive heating device in which current supply is effected selectively to inductive heating coils.
- FIG. 1 A conventional inductive heating device of the same general type to which the invention pertains is shown in Fig. 1.
- reference numeral 1 designates a plurality of heating coils
- 2 switches for selectively activating the heating coils
- 3 power-factor enhancing capacitors forming a parallel resonance circuit for compensating for the lag power factors of the heating coils 1,
- 4 a matching board on which the capacitors 3 are mounted
- 5 a power source for supplying electrical power to the input terminal 6 of the matching board 4
- thermoelectric heating-device workpieces to be heated (not shown) are placed inside the heating coils.
- a processing cycle of loading a workpiece, heating the workpiece, cooling the workpiece and loading another workpiece is employed.
- switches 2 are provided to selectively swith the heating coils 1, with one switch being closed to connect a single coil to the matching board at any time.
- heating coils 1 having, for example, a diameter of 500 to 3000 mm and a length of 500 to 5000 mm are provided and current is suppled to one heating coil at a time, sometimes it is impossible to supply current effectively to the heating coil which is farthest from the matching board 4 because of power transmission losses caused by power line voltage drops.
- an inductive heating device in which a plurality of heating coils 1 are selectively connected to a matching board 4 provided with at least one capacitor 3 for inductive heating of a workpiece, chracterized in that a plurality of output terminals 10 to 15 are provided on said matching board 4 for respective ones of said heating coils 1 , said output terminals being connected directly to said at least one capacitor.
- An inductive heating coil arrangement in which a common current collecting line which collects the currents of various capacitors serves as a current supply line for.supplying current to the plural heating coils, thereby decreasing the power line voltage drop.
- reference numerals 1 through 6 and 8 designate components identified by the same reference numerals as in Fig. 1.
- Reference numerals 10 through 15 designate output terminal pairs which are provided on the matching board 4 and are connected to the current collecting line 8. The pairs of output terminals 10 through 15 are connected through the switches 2 to corresponding ones of the heating coils 1.
- the common current collecting line 8 merely functions to collect the currents from the various capacitors 3.
- the common current collecting line 8 serves as the current supplying lines (which are also provided in the conventional device) because a plurality of output terminals 10 through 15, each of which can be, selectively connected to a separate one of the heating coils 1, are provided on the matching board 4.
- connections are also provided directly between adjacent ones of said output terminals, i.e. one line of terminal pair 10 would be connected to the corresponding line 11 and so on.
- connecting bus bars can be employed instead of the switches 2.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54295/81U | 1981-04-15 | ||
JP5429581U JPS6324634Y2 (fr) | 1981-04-15 | 1981-04-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0062926A1 true EP0062926A1 (fr) | 1982-10-20 |
EP0062926B1 EP0062926B1 (fr) | 1987-08-12 |
Family
ID=12966571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19820103183 Expired EP0062926B1 (fr) | 1981-04-15 | 1982-04-15 | Appareil de chauffage par induction |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0062926B1 (fr) |
JP (1) | JPS6324634Y2 (fr) |
DE (1) | DE3276996D1 (fr) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1185744B (de) * | 1958-04-14 | 1965-01-21 | Aeg | Induktionsanlage mit mindestens zwei ueber eine Sammelschiene gespeisten Heizstationen mit mehreren aufeinanderfolgenden, mit verschiedenen Leistungen und unterschiedlichen Frequenzen arbeitenden Erwaermungszonen zum regelbaren Erwaermen von metallischen Werkstuecken |
-
1981
- 1981-04-15 JP JP5429581U patent/JPS6324634Y2/ja not_active Expired
-
1982
- 1982-04-15 EP EP19820103183 patent/EP0062926B1/fr not_active Expired
- 1982-04-15 DE DE8282103183T patent/DE3276996D1/de not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1185744B (de) * | 1958-04-14 | 1965-01-21 | Aeg | Induktionsanlage mit mindestens zwei ueber eine Sammelschiene gespeisten Heizstationen mit mehreren aufeinanderfolgenden, mit verschiedenen Leistungen und unterschiedlichen Frequenzen arbeitenden Erwaermungszonen zum regelbaren Erwaermen von metallischen Werkstuecken |
Non-Patent Citations (1)
Title |
---|
LEW-NACHRICHTEN, no. 17, 1975, pages 27-30, VEB Lokomotivbau-Elektrotechnische Werke 'Hans Beimler', 1422 Hennigsdorf (DE); * |
Also Published As
Publication number | Publication date |
---|---|
JPS57167590U (fr) | 1982-10-22 |
DE3276996D1 (en) | 1987-09-17 |
EP0062926B1 (fr) | 1987-08-12 |
JPS6324634Y2 (fr) | 1988-07-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4871961A (en) | Method of controlling the supply of power to electrical loads with a minimum of switching surges | |
CN101554086A (zh) | 加热设备电路 | |
CN103546015A (zh) | 逆变器装置 | |
US3274484A (en) | Power control network | |
FR2527832B1 (fr) | ||
CN110178442A (zh) | 感应加热烹饪设备 | |
CN100356676C (zh) | 用作应用电弧设备的电源装置 | |
PL346052A1 (en) | Circuit arrangement for energy-saving operation of a fluorescent tube | |
US6356043B2 (en) | Motor controller power switch arrangement | |
US4578553A (en) | Multi-unit induction heat cooking apparatus having a common noise rejection filter | |
EP0062926A1 (fr) | Appareil de chauffage par induction | |
EP0520221B1 (fr) | Prise femelle commutée électroniquement | |
JPH01194344A (ja) | パワートランジスタの並列接続方法 | |
US5812365A (en) | Mounting device for power capacitor banks | |
JPH03277182A (ja) | インバータ | |
US4087851A (en) | Circuit arrangement for supplying an inductive load | |
EP1087494A2 (fr) | Transformateur muni d'une fonction d'économie d'énergie en mode "veille"et procédé associé | |
KR20210037610A (ko) | 중간 회로 밸런싱을 위한 회로 조립체 | |
JP2564267B2 (ja) | インバ−タ装置 | |
ES8407640A1 (es) | Aparato de calentamiento por induccion de productos metalicos en transito. | |
CN215251327U (zh) | 适用于感应加热与电阻加热双用高温炉的供电结构 | |
US11757302B2 (en) | Power supply assembly and switch assembly | |
CN221103213U (zh) | 一种变频电动机的冷却风机的控制装置 | |
CN216794874U (zh) | 一种感应炉用变频电源柜 | |
GB2095057A (en) | Control circuit for the electric motor of a power tool |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB |
|
17P | Request for examination filed |
Effective date: 19830301 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB |
|
REF | Corresponds to: |
Ref document number: 3276996 Country of ref document: DE Date of ref document: 19870917 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19960409 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19960410 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19960418 Year of fee payment: 15 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19970415 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19970415 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19971231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980101 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |