Abstract:
Die Erfindung betrifft eine Verdrängerpumpe (10), insbesondere eine Flügelzellenpumpe zur Förderung eines Fluides für einen Verbraucher eines Kraftfahrzeuges, wobei in der Stirnseite (15a) der gehäuseseitigen Steuerplatte (15) zumindest eine Entlastungsnut (18a, 18b) ausgebildet ist, welche dazu ausgebildet ist, den jeweiligen Spalt (17a, 17b) von Leckagefluid (LF) der Druckseite (DS) der Arbeitskammer (14) zu entlasten.
Abstract:
A machine (1) comprises: - a rotor (10) exhibiting a preset number (n) of end zones (1 1); - a stator (20) exhibiting a recess (21) delimited by an inner surface (22a). The rotor (10) is eccentrically mounted internally of the recess (21) of the stator (20) and is movable relative to the stator (20) by performing a roto-orbital movement about an axis (A1) of the recess (21). Each end zone (1 1) of the rotor (10) is provided with a rolling element (16) suitable for rolling on the inner surface (22a) of the recess (21), in such a manner as to remain in contact with the inner surface (22a) of the recess (21 ), while the rotor (10) is roto-orbiting about the axis (A1) of the recess (21 ). The machine (1 ) is further provided with a balancing arrangement, so that pressurized fluid exerts axially balanced focus on the rotor (10).
Abstract:
An improved discharge port of a rotary screw compressor is described. A discharge port of a screw compressor generally includes a restrictive portion to help prevent a leakage of working fluid back to a suction side of the compressor. The improved discharge port is configured to have a restrictive portion with a reduced size compared to a restrictive portion of a conventional discharge port, resulting in an enlarged opening of the discharge port compared to a conventional discharge port. The improved discharge port can help discharge the compressed working fluid more quickly than a conventional discharge port, reducing and/or avoiding over-compression of the working fluid. The efficiency gained due to the enlargement of the opening may be more than the efficiency loss due to leakage of working fluid back to the suction side, resulting in a net efficiency gain of the compressor.
Abstract:
An apparatus for compressing or pumping fluid includes a housing having an interior chamber. The housing includes an end wall having a fluid inlet and a fluid outlet. A rotating cam is rotatably mounted within the interior chamber and includes a cam body having an end with a sloped annular channel formed therein. The apparatus also includes an end vane slidably mounted within a slot in the end wall so as to extend into the sloped annular channel for sliding therein as the rotating cam rotates. The end vane divides the sloped annular channel into an inlet chamber and an outlet chamber such that, as the rotating cam rotates, the inlet chamber expands and communicates with the fluid inlet for receiving the fluid, and the outlet chamber contracts and communicates with the fluid outlet for expelling the fluid.
Abstract:
The invention relates to an axial housing impingement surface for a gas displacement machine, having a main part. The invention is characterized in that an insert having a friction surface is arranged in the main part, said friction surface having significantly better tribological properties than the main part.
Abstract:
Die Erfindung betrifft eine Pumpenanordnung umfassend ein mehrteiliges Gehäuse (1), in dem eine Flügelzellenpumpe (2) aufgenommen ist, wobei die Flügelzellenpumpe (2) einen drehfest mit einer Antriebswelle (3) verbundenen Rotor (4), einen den Rotor (4) umgebenden Exzenterring (5) sowie in radial verlaufenden Schlitzen (6) des Rotors (4) radial verschiebbar aufgenommene Flügel (7) umfasst. Erfindungsgemäß ist im Gehäuse (1) ferner eine über die Antriebswelle (3) antreibbare Vakuumpumpe (8) angeordnet.