| 摘要 |
An improved rotary device is provided which can be used either as an internal combustion engine or a compressor. The device includes a housing having an interior cylindrical chamber; a rotary piston with at least one, but preferably three protruding lobes, positioned within the chamber; and a shaft for rotatably mounting the rotary piston coaxially within the chamber. At least one and preferably two diametrically opposed planar seal members are slidably disposed within slots formed in the housing and open to the housing chamber. An elongated guide member is secured at one end to each seal member and, at its other end, is positioned within a guide slot formed in at least one and preferably both axial ends of the rotary piston. The guide slots are formed so as to maintain one end of each seal member in sealing contact with the rotary piston regardless of its rotational position. A first fluid port is adjacent and immediately upstream from each seal member and a second port is adjacent and immediately downstream from each seal member. When used as an internal combustion engine, the rotary device further includes a pair of diametrically opposed igniters, such as spark plugs, in between the seal members. In addition, a first planar valve member is slidably disposed in a slot in the housing upstream from each igniter while, similarly, a second valve member is slidably disposed in a slot formed in the housing downstream from each igniter. An elongated cam follower secured at one end to the first valve member engages and follows a first cam slot formed along at least one and preferably both axial ends of the rotary piston. Similarly, an elongated cam follower is secured at one end to the second valve member and at its other end engages a second cam slot formed in at least one and preferably both axial ends of the rotary piston to control the longitudinal displacement of the second valve member. The first cam slot is formed to sealingly engage the first valve member against the piston when a piston lobe passes under it. The second cam slot is formed to sealingly disengage said second valve member from said piston when the lobe passes under it.
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