INTERNAL GEAR PUMP

To provide an internal gear pump capable of suppressing reduction of pump efficiency, the internal gear pump comprising two discharge ports.SOLUTION: In an internal gear pump 1, a sealed operation chamber V communicates with neither a first discharge port 11 nor a second discharge port 12, and a fir...

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Bibliographische Detailangaben
Hauptverfasser:	NISHIZAWA YASUKI, SUZUKI YUTAKA, TAKAGI KENICHI, HASE AKIHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS WEAPONS
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Beschreibung
Zusammenfassung:	To provide an internal gear pump capable of suppressing reduction of pump efficiency, the internal gear pump comprising two discharge ports.SOLUTION: In an internal gear pump 1, a sealed operation chamber V communicates with neither a first discharge port 11 nor a second discharge port 12, and a first groove part 14A and a second groove part 14B extending from the first discharge port 11 to the side of the sealed operation chamber V are provided. Thus, reduction in pump efficiency of the internal gear pump 1 is suppressed, and increase of drive energy is suppressed by providing the first groove part 14A and the second groove part 14B for reducing a time or a moving amount (moving angle) in which the sealed operation chamber V is in a closed state.SELECTED DRAWING: Figure 1 【課題】２つの吐出ポートを有する内接歯車ポンプにおいて、ポンプ効率の低下を抑制可能な内接歯車ポンプの一例を開示する。【解決手段】内接歯車ポンプ１は、密閉作動室Ｖが第１吐出ポート１１及び第２吐出ポート１２のいずれとも連通しておらず、かつ、第１吐出ポート１１から密閉作動室Ｖ側に延びる第１溝部１４Ａ及び第２溝部１４Ｂが設けられている。これにより、当該内接歯車ポンプ１のポンプ効率が低下することが抑制されるとともに、密閉作動室Ｖが閉じた状態となる時間又は移動量（移動角度）を小さくするための第１溝部１４Ａ及び第２溝部１４Ｂを備えることにより、駆動エネルギーの増大が抑制され得る。【選択図】図１