| 摘要 |
PROBLEM TO BE SOLVED: To provide an internal gear pump reducing leak of working fluid from a delivery port where pressure gets high to a delivery port where pressure gets low, inhibiting reduction of working fluid quantity delivered from the delivery port where pressure gets high, and improving volume efficiency of the pump. SOLUTION: This pump includes a separation wall 18A between the two delivery ports 14A and 15A. A first partition gap X positioned above the separation wall 18A and partitioning a section between a pump chamber V1 communicating to the delivery port 14A where pressure gets high and a pump chamber V2 communicating to the delivery port 15A where pressure gets low is formed between internal teeth 6A of an internal gear 6 and external teeth 7A of an external gear 7. Dimension of the first partition gap X can be set by tooth side surfaces of the internal teeth 6A and tooth side surfaces of the external teeth 7A. COPYRIGHT: (C)2010,JPO&INPIT |
