Smoothly-operating rotary fluid machine

F - Mech Eng,Light,Heat,Weapons – 04 – C

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F04C 2/02 (2006.01) F01C 1/12 (2006.01)

Patent

CA 2021884

Abstract: Smoothly-operating Rotary Fluid Machine A rotary fluid machine includes two intermeshing rotors(2, 3) rotatably mounted in a double-cylinder bore portion(10) of a casing(1), each rotor(2 or 3) having two lobs portions(2a or 3a) disposed on two opposite ends of a long coordinate axis of the rotor(2 or 3) and having a waist portion confined by two shallow recess portions(2b or 3b) formed on two opposite sides of a short coordinate axis of the rotor(2 or 3) so that one rotor(2) can be smoothly rotatably engageable with the other rotor(3) in a single- point contact for a smooth running of the two rotors. For a buffer of a higher output fluid pressure, a balancing chamber(14) is formed between the bore portion(10) and a fluid outlet(13) so that a fluid suddenly increased with fluid pressure may be backflowed into the bore portion(10) through a plurality of holes(16) formed in a partition plate(15) between the chamber(14) and the bore portion(10) for preventing water or air hammer when handling high- pressure fluid. (Figure 1)

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