| 摘要 |
This device alarms briquet change time when the briquet is burned-out and lacking in weight of predetermined value. A supporting plate(4) is set up under the base of oven(1). In a case(5) the elastic spring(6) is established for holding the supporting plate(4). One end of a contacting rod(9) is fixed to the plate(4) and another end contacts with a spring(8') having a contacting plate(10). As the plate(10) is contacted to an end(11), a buzzer(13) with a battery(12) begins to sound.
|
