GB774836A - Improvements in or relating to tubular electric heaters - Google Patents
Improvements in or relating to tubular electric heatersInfo
- Publication number
- GB774836A GB774836A GB11702/55A GB1170255A GB774836A GB 774836 A GB774836 A GB 774836A GB 11702/55 A GB11702/55 A GB 11702/55A GB 1170255 A GB1170255 A GB 1170255A GB 774836 A GB774836 A GB 774836A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- heater
- diameter
- april
- insulation
- 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
Links
- 239000011810 insulating material Substances 0.000 abstract 2
- 238000009413 insulation Methods 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000005485 electric heating Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 abstract 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 abstract 1
- 235000014380 magnesium carbonate Nutrition 0.000 abstract 1
- 239000001095 magnesium carbonate Substances 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
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
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
Landscapes
- Resistance Heating (AREA)
Abstract
774,836. Electric heating resistances. VOIGT & HAEFFNER AKT.-GES. April 22, 1955 [April 30, 1954], No. 11702/55. Class 39(3) In a tubular heater comprising a helical electric resistance surrounded by compressed insulating material within a metal tube, the ratio of surface area of the radiator tube to the surface area of the heating resistance is at least 3 : 1 and the compression of the insulating material is at least 2.9 gm/cm<SP>3</SP>. The thickness of the insulation between the inner surface of the metal tube and the resistance is at least 0.8 mm. per kilovolt of test voltage. Melting magnesite may be used for insulation. The diameter of the heater may be less than 7 mm. and the resistance may be wound on a former of thickness equal to the diameter of the wire. The heater may be formed into spirals of small diameter operating at mains voltage or 42 volts.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE774836X | 1954-04-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB774836A true GB774836A (en) | 1957-05-15 |
Family
ID=6686170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11702/55A Expired GB774836A (en) | 1954-04-30 | 1955-04-22 | Improvements in or relating to tubular electric heaters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB774836A (en) |
-
1955
- 1955-04-22 GB GB11702/55A patent/GB774836A/en not_active Expired
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