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Electric Hot Plate with a Cast-In Element: Jordan & Schneider, 1935
In a cast cooking plate the heating coils sit, insulated, inside tubes, and the tubes are cast into the plate. Friedrich Jordan and Paul Schneider of Voigt & Haeffner, Frankfurt, patented a better way in 1935, US 1,998,764: embed each tube only to about half its circumference, or a little more. Casting metal round the whole tube needs core models, costs material and spreads the heat unevenly, while the exposed underside loses little heat because air conducts far worse than metal. To hold the coil firmly while the iron is poured, holding strips or notched webs are fixed to its turns and cast into the plate with it. The centre of the plate may be made thicker to even out the heat.
Juu
Foundry process
Maagizo
1
1
Coil the element
Coil the element
Coil the tubular heating element, the heating wire inside an insulated tube, into a spiral.
Vifaa kwa hatua hii:
Kipengele cha kupasha joto1 kipande2
2
Fix holding strips
Fix holding strips
Weld holding strips of sheet metal or wire across the turns of the spiral, or slide the turns into notched webs and bend the webs' tongues round them so they cannot come loose during casting.
Vifaa kwa hatua hii:
Vibanzi vya kushikilia elementi1 as requiredZana zinazohitajika:
Mashine ya kulehemu kwa upinde
Koleo la Matumizi Mengi3
3
Cast the plate
Cast the plate
Set the coil in the mould and cast the cooking plate in cast iron, so the tubes are embedded to about half their circumference, or a little more, and the strips or webs are cast in with them. The rest of each tube stays exposed on the underside. The plate may be made thicker at the centre.
Vifaa kwa hatua hii:
Vitalu vya chuma ghafi1 as requiredZana zinazohitajika:
Tanuru la kupulizia
Upawa wa kusubu chumaVifaa
3- 1 kipandeKishikilia Nafasi
- 1 as requiredKishikilia Nafasi
- 1 as requiredKishikilia Nafasi
Zana Zinazohitajika
4- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Mchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.