| 摘要 |
PCT No. PCT/GB91/01579 Sec. 371 Date Mar. 16, 1993 Sec. 102(e) Date Mar. 16, 1993 PCT Filed Sep. 16, 1991 PCT Pub. No. WO92/05675 PCT Pub. Date Apr. 2, 1992.An immersion heater includes a heating element having a return portion around which is wrapped a thermally conductive link. The link extends through a plastic head and seal member, by which the element is mounted in an opening in a wall of a heating chamber, and has a first portion bent down to cooperate with a bimetallic actuator of a thermally responsive control, which operates in the event that the element overheats. A second portion of the link is bent upwardly, its upper end cooperating with a thermally deformable member of the control which, in the event that the actuator fails to operate, will deform so as to disconnect the power supply to the element. |
