高温饱和压力蒸汽，有良好的穿透性，能使微生物迅速被杀灭。但如果有空气就会阻碍其穿透而影响灭菌效果。所以蒸汽灭菌器，过去在开始加热灭菌时，都要将老式放气阀的摘子推至垂直“放气”方位，随着加热而使空气由内桶底部经连于放气阀尾部的软管中排出，待有较急蒸汽喷出一 High temperature saturated pressure steam, good penetration, can quickly kill microorganisms. However, if there is air, it will hinder its penetration and affect the sterilization effect. Therefore, in steam sterilizers, in the past when heating and sterilizing were started, the pick of the old bleed valve should be pushed to the vertical “bleeding” position. As the heating, the air was connected from the bottom of the inner tub to the tail of the deflation valve. Exhausted in the hose, waiting for more steam to emerge