| 摘要 |
The invention relates to a device for heating comprising an electrical resistor 6 arranged in an insulated manner inside a cylindrical metal sheath 7 intended to be fastened inside a tubular duct formed in an enclosure to be heated. It comprises a plurality of sleeves 10, 11, ... 12 fitted, with a degree of play, onto the said metal sheath, at least the end sleeves 10, 12 being fixed to the ends of the sheath, the sleeves being, when cold, assembled with virtually no axial play, and the said sleeves being made from a non-hygroscopic insulating material which is a relatively good heat conductor. <IMAGE> |
