| 摘要 |
PURPOSE:To simplify the structure of the pump by a method wherein an ellipti cal rotor is provided in a substantially rounded triangular casing while suction and delivery ports are formed on the points of contact in the back side of clockwise direction on the small diametral arc of the casing and the fore side in clock-wise direction on the large diametral arc of the casing. CONSTITUTION:The suctin and delivery ports 10, 11, 12, provided at three places, are formed on the substantially rounded triangular casing 9 while the elliptical rotor 17 is provided in a housing 16. The suction and delivery port 12 is pro vided at the point of contact Pb between the small diametral arc rb and the large diametral arc Ra of the housing. According to this method, three kinds of fluid may be sucked and delivered simultaneously while the structure of the pump may be simplified. |
