| 摘要 |
PURPOSE:To safely open and close air holes timely by providing a spring made of a shape memory alloy and a stopper for checking blocking of the air hole. CONSTITUTION:A coil spring 10 made of a shape memory alloy and a balance spring 11 against the above spring are formed and fitted between a hook 12 and a slide panel 6. A through hole 3a is bored in a cover 3, and the forward end of a stopper 13 made of a shape memory alloy faces on the position for stopping sliding of the slide panel 6. The stopper 13 is manually operated to keep the air holes in the release state before a receptacle is put in a stem sterilizer, and before steam is poured, at the time of vacuum suction at an ordinary temperature, the air holes are opened. With a temperature rise due to stem sterilization, the spring 10 is loosened to keep the release state of air holes 4, 7, and the stopper 13 is returned to such a form not to check blocking. When steam sterilization operation is completed and the temperature drops, the air holes 4, 7 are blocked by the action of the balance spring 11. Thus, the air holes can be automatically released and blocked timely. |
