US927173A - Electric heater. - Google Patents
Electric heater. Download PDFInfo
- Publication number
- US927173A US927173A US43392408A US1908433924A US927173A US 927173 A US927173 A US 927173A US 43392408 A US43392408 A US 43392408A US 1908433924 A US1908433924 A US 1908433924A US 927173 A US927173 A US 927173A
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- United States
- Prior art keywords
- electric heater
- tubes
- heater
- nickel
- resistance
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Devices For Use In Laboratory Experiments (AREA)
- Resistance Heating (AREA)
Description
K. SGHLUTER.
ELECTRIC HEATER.
APPLICATION FILED MAY 20, 19 08.
Patented July 6, 1909.
"UN TED STATES PATENT OFFICE.
KARL SCHLIITER, OF KIEL-GAARDEN, GERMANY, ASSIGNOR TO FRIED. KRUPP AKTIEN- GESELLSCHAFT GERMANIAWERFT, OF KIEL-GAARDEN, GERMANY.
ELECTRIC HEATER.
No. 927,173. Specification of Letters Patent. I Patented July 6, 1909.
Application filed May 20, 1908. Serial No. 433,921
To all whom it may concern: I I
Be it known. that I, KARL SOHLI'JTER, a
subject of the Emperor of Germany, and a resident of Kiel-Gaarden, in the Empire of vGermany, have invented certain new and useful Improvements in Electric Heaters, of which the following is a specification.
The subject of the present invention is an electric heater, having its resistance members constructed-0f nickel tubes. Heaters with such resistance members possess especial efficiency because the material of the resistance possesses a high electrical temperature coefficient, a high specific resistance, and a high heat radiating coefficient, and,-because the form in which it is ossible' to embody the metal, in producing t e resistance, causes the surrounding air to contact with the greatest possible superficial area, thereby preventin over heatin of the resistance.
One em odiment oft e invention is shown by way of exam le in the accompanying drawings, in which Figure 1 shows the heater in longitudinal section, and Fig.2 shows the heater in crosssection.
In a housing A, a coin aratively large number of thin walled nickel tubes B are mounted through insulation in transverse sheet metal walls C, so as to constitute a condenser type of structure. In the walls G and between the tubes B are provided a large number of bores c. The nickel tubes B, through the medium of suitably disposed sheet metal strips D, are interposed in series in an uninterrupted conductor for electrical current. The ends of this conductor terminate in two binding posts E mounted through insulation'u on the housing A. In the end walls of the ousing A are located an air intake F and an air outlet G. The former stands in communication with theatmosphere, while the latter leads to the place of use of the warmed air, as for example, the combustion chamber of an internal combus.
tion engine.
If the bindin posts are suitably connected to a source 0 electricity, electric current flows through the circuit provided by the walls 0 which communicates with the space surrounding the group of tubes, and would become highly heated in conse uence of the great contact surface provided y the resistances B.
Experiments have shown that a heater constructed in the described manner will stand acurrent of thirty amperes per square millimeter of conductor section and at the same time, is selfrotect'ed against overheating, by the higii coeflicient of the nickel. The heater is also shown by experiments to withstand temperature fluctuations of 900 degrees centigrade electrical temperature.
and over with swift air currents, without danger of fracturing the nickel tubes. J
Furthermore, since nickel tubes are only slightly oxidized at very high temperatures, the heater Having t us described the invention, what possesses a great lasting quality. I
is claimed and desired to be secured by Letters- Patent is In an electric heater, the comblnatlon with a housing open at the top and provided in one end-wall with an air-intake and in the otlier end-wall with an airoutlet; of a topplate adapted to close said housing; tubular resistance members of nickel open at both ends and suspended from said top-plate with the open ends of said tubes adjacent to the intake and outlet respectively; means for nsulating said tubes each from each and from said top-plate and connections whereby said tubes are joined separately in series.
The foregoing specification signed at Kiel, Germany, this'5th day of May, 1908.
KARL SOI-ILUTER.
In presence of- BRUNO BEHsE,
GEORG RIEBEs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US43392408A US927173A (en) | 1908-05-20 | 1908-05-20 | Electric heater. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US43392408A US927173A (en) | 1908-05-20 | 1908-05-20 | Electric heater. |
Publications (1)
Publication Number | Publication Date |
---|---|
US927173A true US927173A (en) | 1909-07-06 |
Family
ID=2995599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US43392408A Expired - Lifetime US927173A (en) | 1908-05-20 | 1908-05-20 | Electric heater. |
Country Status (1)
Country | Link |
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US (1) | US927173A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2556498A (en) * | 1948-02-21 | 1951-06-12 | Pittsburgh Des Moines Company | Heat accumulator and exchanger |
US3841911A (en) * | 1972-03-09 | 1974-10-15 | Air Knife Inc | Method for removing heat degradable textile waste material from apparatus used in textile operations |
US3927300A (en) * | 1973-03-09 | 1975-12-16 | Ngk Insulators Ltd | Electric fluid heater and resistance heating element therefor |
SE2030194A1 (en) * | 2020-06-11 | 2021-12-12 | Kanthal Ab | Heater |
WO2023104746A1 (en) | 2021-12-07 | 2023-06-15 | Kanthal Gmbh | Electric heater and electric heating system |
-
1908
- 1908-05-20 US US43392408A patent/US927173A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2556498A (en) * | 1948-02-21 | 1951-06-12 | Pittsburgh Des Moines Company | Heat accumulator and exchanger |
US3841911A (en) * | 1972-03-09 | 1974-10-15 | Air Knife Inc | Method for removing heat degradable textile waste material from apparatus used in textile operations |
US3846618A (en) * | 1972-03-09 | 1974-11-05 | Air Knife Inc | Electric heating apparatus for removing textile waste material |
US3927300A (en) * | 1973-03-09 | 1975-12-16 | Ngk Insulators Ltd | Electric fluid heater and resistance heating element therefor |
SE2030194A1 (en) * | 2020-06-11 | 2021-12-12 | Kanthal Ab | Heater |
WO2021250215A1 (en) | 2020-06-11 | 2021-12-16 | Kanthal Ab | Electric gas heater |
SE546054C2 (en) * | 2020-06-11 | 2024-04-30 | Kanthal Ab | Electric Gas Heater and a Method for Heating a gas |
WO2023104746A1 (en) | 2021-12-07 | 2023-06-15 | Kanthal Gmbh | Electric heater and electric heating system |
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