Patent ID: 7311653
Filing Date: 2007-12-25
Classification: B04B

Abstract:
1. A centrifugal separator having a driving unit, a rotor adapted to be rotated by the driving unit and retain a sample to be separated, a rotor chamber holding the rotor therein and having an opening on an upper side thereof, and a door adapted to seal up the opening of the rotor chamber against the outside air and provided so that the door can be opened and closed, wherein an air flow valve capable of being opened and closed is provided between an inner portion and an outer portion of the rotor chamber sealed with the door, and, wherein the door has a door lever for opening and closing the door, the air flow valve being formed so that the air flow valve is rendered opened when the door is closed and opened in accordance with an operation of the door lever, and rendered closed when the door is in a steady condition.