Smoothly accelerating channel inlet for centrifugal separator

An inlet device for a centrifugal separator for directing a liquid mixture that is to be separated from an inlet pipe to a separation chamber, wherein said inlet device is rotatable around a central rotational axis and comprises:

• a central conical receiving structure arranged around said central rotational axis and comprising a central receiving zone for receiving said liquid mixture from the inlet pipe and wherein said central receiving zone surrounds an apex of said central conical receiving structure;
• and
• at least one inlet channel for directing said liquid mixture from said central receiving zone to said separation chamber, wherein said at least one inlet channel is formed by two opposed sidewalls, the two sidewalls extends from a periphery of the central receiving zone and spirals down an outer surface of said central conical receiving structure,
• wherein said at least one inlet channel extends from the central receiving zone in a direction that forms an angle α with a tangent of a periphery of the central receiving zone and wherein the angle α is less than 90°,
• wherein said at least one inlet channel further extends in a straight radial direction from the central rotational axis from a bottom of the central conical receiving structure to an inlet channel outlet,
• wherein said inlet channel outlet is configured to be in contact with the separation chamber of the centrifugal separator, and
• wherein a width of said at least one inlet channel is substantially constant throughout a length of said at least one inlet channel.