Abstract: A rotary piston compressor/pump/blower includes a housing spatially limiting a working chamber, an intake connection for guiding fluid into the working chamber, a pressure connection for guiding the fluid out of the working chamber, and a rotor assembly having a first rotor rotatably arranged in a first working sub-chamber and a second rotor cooperating with the first rotor and rotatably arranged in a second working sub-chamber. The rotary piston compressor/pump/blower also includes a ventilation channel, formed in the housing and connected to the working chamber via a ventilation channel opening, for the temporally limited introducing of air into the working chamber, wherein the ventilation channel opening is open at least in sections, in particular completely open, in a compression phase.

Abstract: A rotary piston compressor/pump/blower includes a housing spatially limiting a working chamber, an intake connection for guiding fluid into the working chamber, a pressure connection for guiding the fluid out of the working chamber, and a rotor assembly having a first rotor rotatably arranged in a first working sub-chamber and a second rotor cooperating with the first rotor and rotatably arranged in a second working sub-chamber. The rotary piston compressor/pump/blower also includes a ventilation channel, formed in the housing and connected to the working chamber via a ventilation channel opening, for the temporally limited introducing of air into the working chamber, wherein the ventilation channel opening is open at least in sections, in particular completely open, in a compression phase.

Abstract: A rotary piston engine comprises a housing (1) spatially limiting a working chamber (2), an intake connection (4) for guiding gas into the working chamber (2), a pressure connection (6) for guiding the gas out of the working chamber (2), and a rotor assembly (4) having a first rotor (14) rotatably arranged in a first working sub-chamber (12) and a second rotor (21) cooperating with the first rotor (14) and rotatably arranged in a second working sub-chamber (13). The rotary piston engine also comprises a ventilation channel (8), formed in the housing (1) and connected to the working chamber (2) via a ventilation channel opening (9), for the temporally limited introducing of air into the working chamber (2), wherein the ventilation channel opening (9) is open at least in sections, in particular completely open, in a compression phase.

Abstract: The invention relates to a pump. The pump has a pump housing comprising a first and second housing part (1, 2). The first housing part (1) has a first fluid port (10) and a first face side (8). The second housing part (2) has a second fluid port (27) and a second face side (9). The second housing part is axially connectable with the first housing part (1). Further, the pump has a pump motor in the first housing part (1) and a fluid mover in the second housing part (2). The fluid mover is drivable by the pump motor. Further, the pump has a housing part connecting device (3) for axially connecting the first housing part (1) and the second housing part (2) with each other. The housing part connecting device (3) is adjustable between a connecting and a release position. In the connecting position, the first housing part (1) and the second housing part (2) are fixed in an axial and rotary manner with each other.

Abstract: The invention concerns a pump having a housing; a working chamber located in the housing for delivery of a fluid; a suction channel which is in flow connection with the working chamber for guiding the fluid into the working chamber; a valve unit disposed in the suction channel, the valve unit has a guide body, a limiting element which is guided for displacement in the guide body and has at least one displacement stop for limitation of displacement, a valve which is movable between an open position and a sealing position for controlling the flow of the fluid into the suction channel, wherein the valve is guided for displacement, and a pressure element which presses the limiting element in the direction of the sealing position of the valve; as well as a pressure channel which is in flow connection with the working chamber for guiding the fluid out of the working chamber.

Abstract: In an extraction device comprising a suction apparatus (16) with an electric motor (32) and an centrifugal separator (14) exhibiting an inlet cylinder (22), a vertically arranged dip pipe (30) and a lateral suction nozzle (24) through which a laden gas stream enters the inlet cylinder (22), it is provided with a view to creating a low-cost and easy-to-handle extraction device of a compact design, having a centrifugal separator, that the electric motor (32) is arranged inside the dip pipe (30).