Patent ID: 7845920
Filing Date: 2010-12-07
Classification: F04C

Abstract:
1. An oil pump that transports fluid from a suction port to a discharge port by rotation of a rotor mounted in a pump casing, comprising: an introduction path being formed in the same direction as a flow direction of a discharge flow channel that communicates with the discharge port, the introduction path having a thickness which is less than a thickness of the discharge flow channel, an introduction opening of the introduction path being positioned substantially in front and substantially perpendicular with respect to the flow direction of the discharge fluid that extends in a direction along an outer side wall on an upstream side of a curved part provided in the discharge flow channel; a chamber that communicates with the discharge flow channel by way of the introduction path being formed; and a channel being communicatingly formed, from the curved part, altering in a direction substantially perpendicular to the flow direction of the discharge flow channel.