Novel heat-preservation electric heating device
The utility model relates to a novel heat-preservation electric heating device which is simple in structure, good in heat-preservation effect and high in practicability. The novel heat-preservation electric heating device comprises a shell and a heating device which is arranged inside the shell and...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model relates to a novel heat-preservation electric heating device which is simple in structure, good in heat-preservation effect and high in practicability. The novel heat-preservation electric heating device comprises a shell and a heating device which is arranged inside the shell and can be connected with an external power supply. The shell is of double-layer structures, a vacuum layer is arranged between the double-layer structures, and an opening is formed in the shell. A seal cover is arranged on the opening and can be opened and closed. Heat-insulating heat-preservation coatings coat on the inner walls between the double-layer structures. |
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