The present disclosure describes a rotary pulsation generator having a simple structure capable of transferring fluid while implementing low noise and low vibration and having high flow of fluid and high pressure suction and discharge functions. According to the present disclosure, fluid is transferred by adjusting a width and interval of pulsation while reducing vibration caused by eccentric rotation of a rotor.

An electric compressor system for a vehicle includes: an electric motor having a rotor and a motor shaft which selectively rotate in a first rotation direction or a second rotation direction; an external rotation shaft extending from the motor shaft of the electric motor; a first compressor unit connected to the external rotation shaft and selectively compressing a first fluid according to the rotation direction of the external rotation shaft; and a second compressor unit connected to the external rotation shaft and selectively compressing a second fluid according to the rotation direction of the external rotation shaft, wherein the first compressor unit and the second compressor unit are sequentially arranged on the external rotation shaft, the first compressor unit is fluidly connected to a first fluid system, and the second compressor unit is fluidly connected to a second fluid system.

An electric compressor system for a vehicle includes: an electric motor having a rotor and a motor shaft which selectively rotate in a first rotation direction or a second rotation direction; an external rotation shaft extending from the motor shaft of the electric motor; a first compressor unit connected to the external rotation shaft and selectively compressing a first fluid according to the rotation direction of the external rotation shaft; and a second compressor unit connected to the external rotation shaft and selectively compressing a second fluid according to the rotation direction of the external rotation shaft, wherein the first compressor unit and the second compressor unit are sequentially arranged on the external rotation shaft, the first compressor unit is fluidly connected to a first fluid system, and the second compressor unit is fluidly connected to a second fluid system.

A compressible fluid separator pump includes a crankshaft, four cylinders, and four pistons. Each cylinder includes an inlet including an inlet valve for mixed fluid comprising a target component and a discharge component, a reject outlet including a reject valve for a reject fluid, and a select outlet for a select fluid, wherein each of the select outlets includes a separator member that prefers the target component over the discharge component such that the target component is at a higher concentration in the select fluid than in the mixed fluid and in the reject fluid. Each piston is connected to the crankshaft and is positioned in one of the four cylinders, and the crankshaft is configured to position two of the pistons at top dead center when the other two of the pistons are at bottom dead center.

The invention relates to the rotary piston machines, namely, to the working volume sealing systems of the said machines and can be used in the gas (air)’ and refrigerating compressors, heat’ and vacuum pumps and in the internal-combustion engines. The rotary piston compressor sealing system comprises the radial and butt sealing bars configured in the rotor slots, tightened towards the working surfaces by expanders and interacting with the sealing cylinders wherein the radial and butt sealing bars are made from antifriction composite material and each of the sealing cylinders is configured conjointly with one of the ends of one butt sealing bar. Also, a second embodiment of the rotor piston compressor sealing system is disclosed. The technical result consists in the increasing of the efficiency of the sealing system’ and the whole compressor operation, simplification of the system production process, simplification and labor intensity reduction of the system assembly and maintenance process, increasing of the working chambers leakage tightness, increasing of the system reliability and durability and improvement of the compressor performance related to the bleeding and the dynamic pneumatic process as a whole.

The invention relates to the rotary piston machines, namely, to the working volume sealing systems of the said machines and can be used in the gas (air)’ and refrigerating compressors, heat’ and vacuum pumps and in the internal-combustion engines. The rotary piston compressor sealing system comprises the radial and butt sealing bars configured in the rotor slots, tightened towards the working surfaces by expanders and interacting with the sealing cylinders wherein the radial and butt sealing bars are made from antifriction composite material and each of the sealing cylinders is configured conjointly with one of the ends of one butt sealing bar. Also, a second embodiment of the rotor piston compressor sealing system is disclosed. The technical result consists in the increasing of the efficiency of the sealing system’ and the whole compressor operation, simplification of the system production process, simplification and labor intensity reduction of the system assembly and maintenance process, increasing of the working chambers leakage tightness, increasing of the system reliability and durability and improvement of the compressor performance related to the bleeding and the dynamic pneumatic process as a whole.

The present invention provides a fluid transfer apparatus comprising: a rotating shaft comprising a rotation unit extending along an axial direction and a first eccentric unit and a second eccentric unit disposed to be spaced apart from each other along the axial direction; a first rotor housing forming a first fluid compression space in the shape of an epitrochoid curved surface; a second rotor housing forming a second fluid compression space in the shape of an epitrochoid curved surface, and positioned to be spaced apart from the first rotor housing along the axial direction; a first rotor disposed in the first fluid compression space so as to delimit the first fluid compression space into multiple variable-displacement spaces, and coupled to the first eccentric unit while surrounding the first eccentric unit in the radial direction of the first eccentric unit; and a second rotor disposed in the second fluid compression space so as to delimit the second fluid compression space into multiple variable-displacement spaces, and coupled to the second eccentric unit while surrounding the second eccentric unit in the radial direction of the second eccentric unit.

The present invention provides a fluid transfer apparatus comprising: a rotating shaft comprising a rotation unit extending along an axial direction and a first eccentric unit and a second eccentric unit disposed to be spaced apart from each other along the axial direction; a first rotor housing forming a first fluid compression space in the shape of an epitrochoid curved surface; a second rotor housing forming a second fluid compression space in the shape of an epitrochoid curved surface, and positioned to be spaced apart from the first rotor housing along the axial direction; a first rotor disposed in the first fluid compression space so as to delimit the first fluid compression space into multiple variable-displacement spaces, and coupled to the first eccentric unit while surrounding the first eccentric unit in the radial direction of the first eccentric unit; and a second rotor disposed in the second fluid compression space so as to delimit the second fluid compression space into multiple variable-displacement spaces, and coupled to the second eccentric unit while surrounding the second eccentric unit in the radial direction of the second eccentric unit.

A pump and method for pumping a gas are disclosed. The pump comprises a rotor and a stator. At least one of the rotor or stator comprises at least one liquid opening configured for fluid communication with a liquid source. The liquid opening is configured such that in response to a driving force exerted on liquid from the liquid source a stream of liquid is output from the opening, the stream of liquid forming a liquid blade between the rotor and the stator, gas confined by said stator, said rotor and said liquid blade being driven through said pump from a gas inlet towards a gas outlet.

A compressor unit (38) for supplying pressurized medium to a tire mounted on a vehicle wheel rim (34), having a compressor (58) for exerting pressure on a fluid medium that is to be conveyed into the tire. The compressor unit (38) is dimensioned to be accommodated in a center bore (44) of the vehicle wheel rim (34) when the vehicle wheel rim (34) is in the mounted state on a wheel hub (62); and the compressor (58) can be driven by a drive unit (56) positioned in the vicinity of the center bore (44) of the vehicle wheel rim (34). The compressor unit (38) is usable with a vehicle wheel rim (34) having a pressurized medium supply device (22) for a tire that is mounted on the vehicle wheel rim (34), as well as a vehicle having a vehicle wheel that includes such a vehicle wheel rim (34).