US2790055A - Inductor - Google Patents
Inductor Download PDFInfo
- Publication number
- US2790055A US2790055A US382170A US38217053A US2790055A US 2790055 A US2790055 A US 2790055A US 382170 A US382170 A US 382170A US 38217053 A US38217053 A US 38217053A US 2790055 A US2790055 A US 2790055A
- Authority
- US
- United States
- Prior art keywords
- aperture
- inductor
- current
- parts
- field
- 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.)
- Expired - Lifetime
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
- H05B6/36—Coil arrangements
- H05B6/362—Coil arrangements with flat coil conductors
Definitions
- This invention relates to inductors and more particularly to plate-shaped inductors for inductive HF-heating.
- parts of the inductor in the axial direction thereof and adjacent the inner edge of the working aperture are arranged with small spacing and in overlapping position at the area of the connections to the supply conductors, at least one part having a narrowed portion in planes at right angles to the axial direction of the inductor.
- the narrowed part makes it possible for the current path and the current strength in at least one of the overlapping parts at the inner edge bounding the working aperture of the inductor to be matched to the requirements imposed upon the heating of the workpiece.
- the narrowed part results from the presence of an aperture in one of the said parts.
- said aperture extends into one side of the said part, but preferably into the outer edge thereof.
- an aperture should be provided in each of the overlapping parts, in which case the apertures are preferably located symmetrically with respect to one another.
- Fig. 1 shows a prior art inductor
- Fig. 2 shows an improved form of inductor
- Fig. 3 shows a plate shape inductor which is a further, more improved, plate-shaped inductor embodying the present invention
- Fig. 4 is another embodiment of the present invention.
- reference numeral 1 indicates an ordinary plate-shaped inductor having a Working aperture 2 in which the work-piece is arranged. Due to the presence of an air-gap 3, the work-piece in the vicinity of the air-gap is heated insufiiciently with respect to the other part thereof.
- the larger proportion of the current follows the path indicated diagrammatically by a large arrow 8, a smaller proportion following the path indicated by a small arrow 9, since the resistance along the last-mentioned path is higher due to the presence of aperture 6.
- a suitable distribution of current in connection with the desired heating of the work-piece may thus be obtained, even if in particular cases in the region of the overlapping parts 4 and 5 a temperature of the work-piece is locally desired which is higher than in the other part thereof.
- a sawcut 10 instead of the aperture 6 of Figure 2 is provided. According to the position of this sawcut, which is more to the left or more to the right and/or shorter or longer, the current is forced more or less into a corner 11, so that the current 12 in the overlapping part 4 at the inner edge bounding the work-piece may be caused by the said means to have a smaller or greater influence.
- a similar sawcut may be provided in the other part 5 at the area indicated by a dotted line in Fig. 3.
- Such inductors are important more particularly for soldering tins or similar objects.
- a plate-shaped inductor for high frequency heating having a working aperture therein comprising a pair of supply conductors, a pair of spaced parts on said inductor connected to said supply conductors and being laterally displaced to locations out of the plane of said inductor and arranged in superposed relationship to one another and forming an airgap therebetween, and at least one of said superposed parts having at least one slit-like aperture extending into one side of said one part Whereby the desired distribution of current in said inductor is furnished.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL728805X | 1952-10-16 | ||
NL1085161X | 1952-10-16 | ||
NL316946X | 1952-10-16 | ||
NL2790055X | 1952-10-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2790055A true US2790055A (en) | 1957-04-23 |
Family
ID=27483729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US382170A Expired - Lifetime US2790055A (en) | 1952-10-16 | 1953-09-24 | Inductor |
Country Status (2)
Country | Link |
---|---|
US (1) | US2790055A (fr) |
FR (1) | FR1085161A (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3001162A (en) * | 1959-11-24 | 1961-09-19 | Taylor Winfield Corp | Welding transformer |
US4186729A (en) * | 1977-11-25 | 1980-02-05 | Donald L. Morton & Associates | Deep heating electrode |
US4325361A (en) * | 1977-11-25 | 1982-04-20 | Donald L. Morton & Associates | Deep heating electrode |
US4402309A (en) * | 1981-10-22 | 1983-09-06 | Donald L. Morton & Associates | Therapeutic magnetic electrode |
US5001319A (en) * | 1989-03-13 | 1991-03-19 | Tetra Pak Holdings & Finance S.A. | Arrangement for continuous induction welding |
US20090127254A1 (en) * | 2007-11-16 | 2009-05-21 | Mtu Aero Engines Gmbh | Induction coil, method and device for inductive heating of metallic components |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2477118A (en) * | 1945-09-28 | 1949-07-26 | Western Electric Co | High-frequency induction heating apparatus |
US2481071A (en) * | 1945-07-25 | 1949-09-06 | Chrysler Corp | High-frequency induction heating device |
US2528714A (en) * | 1949-10-22 | 1950-11-07 | Ohio Crankshaft Co | High-frequency inductor block |
US2647200A (en) * | 1949-05-14 | 1953-07-28 | Westinghouse Electric Corp | Controlled induction heating with scanning |
US2655590A (en) * | 1950-01-04 | 1953-10-13 | Ohio Crankshaft Co | Induction heating apparatus |
US2689296A (en) * | 1949-06-09 | 1954-09-14 | Ohio Crankshaft Co | Means and method of high-frequency induction heating |
-
1953
- 1953-09-24 US US382170A patent/US2790055A/en not_active Expired - Lifetime
- 1953-10-14 FR FR1085161D patent/FR1085161A/fr not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2481071A (en) * | 1945-07-25 | 1949-09-06 | Chrysler Corp | High-frequency induction heating device |
US2477118A (en) * | 1945-09-28 | 1949-07-26 | Western Electric Co | High-frequency induction heating apparatus |
US2647200A (en) * | 1949-05-14 | 1953-07-28 | Westinghouse Electric Corp | Controlled induction heating with scanning |
US2689296A (en) * | 1949-06-09 | 1954-09-14 | Ohio Crankshaft Co | Means and method of high-frequency induction heating |
US2528714A (en) * | 1949-10-22 | 1950-11-07 | Ohio Crankshaft Co | High-frequency inductor block |
US2655590A (en) * | 1950-01-04 | 1953-10-13 | Ohio Crankshaft Co | Induction heating apparatus |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3001162A (en) * | 1959-11-24 | 1961-09-19 | Taylor Winfield Corp | Welding transformer |
US4186729A (en) * | 1977-11-25 | 1980-02-05 | Donald L. Morton & Associates | Deep heating electrode |
US4325361A (en) * | 1977-11-25 | 1982-04-20 | Donald L. Morton & Associates | Deep heating electrode |
US4402309A (en) * | 1981-10-22 | 1983-09-06 | Donald L. Morton & Associates | Therapeutic magnetic electrode |
US5001319A (en) * | 1989-03-13 | 1991-03-19 | Tetra Pak Holdings & Finance S.A. | Arrangement for continuous induction welding |
US20090127254A1 (en) * | 2007-11-16 | 2009-05-21 | Mtu Aero Engines Gmbh | Induction coil, method and device for inductive heating of metallic components |
Also Published As
Publication number | Publication date |
---|---|
FR1085161A (fr) | 1955-01-28 |
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