Abstract: A built-in air pump with rapid inflation and deflation for an inflatable product includes a first channel, a second channel and a centrifugal fan. A first air hole and a third air hole are formed in the first channel. A second air hole and a fourth air hole are formed in the second channel. The suction end of the centrifugal fan is abutted against the first channel, and the exhaust end of the centrifugal fan is abutted against the second channel. When in inflation, the first air hole and the second air hole are communicated with the outside of the inflatable product, and the third air hole and the fourth air hole are communicated with an inner cavity of the inflatable product.

Abstract: A fan apparatus has a housing with an enlarged portion defining at least one air intake and an outlet portion defining an outlet port. The outlet port has a greater width and a lesser height. A blower wheel having a plurality of fan blades is supported in the enlarged portion of the housing for rotation about an axis. A driver is connected to the blower wheel to cause rotation of the blower wheel. A flow straightener assembly is located in the outlet portion of the housing. The flow straightener assembly has first and second fins spaced apart from one another and oriented substantially orthogonal to the axis of the blower wheel. Third and fourth fins are located outside of a respective one of the first and second fins, the third and fourth fins being oriented substantially parallel to the axis of the blower wheel.

Abstract: An electric blower includes a motor, a fan to generate a first air current, a fan to generate a second air current, and a housing. The first air current and the second air current are exhausted from the housing in opposite directions to each other in the axial direction.

Abstract: A blower housing assembly structure includes a locking base formed by aluminum die casting and two opposite casing covers disposed on both sides of the locking base respectively. The locking base has two opposite side connecting plates, each having a connection part formed at the top of the side connecting plate, and a side of each casing cover has an intake vent, and the two casing covers have two opposite half-extended pipe sections extending from the edges of the locking base connection part respectively, so that the half-extended pipe sections of the two casing covers are engaged to form an exhaust vent of a housing. This invention has the advantages of simple structure, easy assembling, effective alignment and high stability and the effects of preventing damages by vibration and reducing the noise during operation.

Abstract: A livestock blower apparatus for blowing air through a flexible hose onto an animal. A pair of blower units are enclosed within an interior space of a housing. The blower units are adapted to draw air through housing inlet openings and force it through a Y-shaped conduit out through a housing outlet opening without the air coming in contact with the housing interior space. A cooling fan is provided at a housing cooling inlet opening and blows air into the housing interior space. Another cooling fan is provided at a housing cooling outlet opening and draws/blows air out from within the housing interior space. The blower units are thereby protected from the elements and noise generated by them is muffled by the housing, and the blower units are cooled for minimizing the heat that may be transferred to the air being blown onto the animal.

Abstract: A blood pump includes a blood supply mechanism; a motor having a stator, a rotor and a shaft; a base body; a casing; a fixed side slide member having a first slide surface and fixed to the base body; and a rotary side slide member. A second insertion hole allows the shaft to pass therethrough is in the rotary side slide member. The shaft is fitted into the second insertion hole between the fixed side slide member and the blood supply mechanism. The second slide surface is slidable on the first slide surface in contact with the first slide surface by rotating together with the blood supply mechanism and the shaft A center of the core is at a position more to a +z direction side than a center (CM) of a permanent magnet.

Abstract: An air mover is provided. The air mover includes a housing, a spacer, a co-axial motor, a first fan and a second fan. The housing includes a first housing member and a second housing member. A first inlet, a second inlet and an outlet are formed on the housing. The first inlet is formed on the first housing member and the second inlet is formed on the second housing member. The spacer is disposed between the first housing member and the second housing member. The co-axial motor includes a shaft, wherein the co-axial motor is disposed on the spacer. The shaft includes a first free end and a second free end. The first free end extends in a first direction, and the second free end extends in a second direction.

Abstract: The present disclosure is directed to an adjustable mounting assembly for a fan motor, having a frame defining a space configured to receive the fan motor, a fixed nut coupled to the frame, and a bolt extending through the fixed nut and into the space. The frame is configured to mount to a heating, ventilation, and/or air conditioning (HVAC) unit, and the bolt is adjustable relative to the fixed nut to adjust a position of the fan motor within the space.

Abstract: An electric blower includes: a motor including a rotary shaft; a first centrifugal fan fixed to a first end side of the rotary shaft; a second centrifugal fan fixed to a second end side of the rotary shaft opposite to the first end side; and a casing surrounding the motor, the first centrifugal fan and the second centrifugal fan. In the electric blower, first force applied by the first centrifugal fan to the rotary shaft in a first direction in an axial direction of the rotary shaft and second force applied by the second centrifugal fan to the rotary shaft in a second direction in the axial direction of the rotary shaft are opposite to each other during rotation of the rotary shaft.

Abstract: The present disclosure is directed to an adjustable mounting assembly for a fan motor, having a frame defining a space configured to receive the fan motor, a fixed nut coupled to the frame, and a bolt extending through the fixed nut and into the space. The frame is configured to mount to a heating, ventilation, and/or air conditioning (HVAC) unit, and the bolt is adjustable relative to the fixed nut to adjust a position of the fan motor within the space.

Abstract: A subsea water injection pump includes components that are cooled and lubricated by the process fluid. The pump includes opposing stages of impellers in a “back-to-back” arrangement such that the axial forces of the impeller stages partially or nearly fully offset each other. In some cases, a combination of barrier fluid and process fluid is used for lubrication and cooling.

Abstract: A housing of the air pump has a first air inlet, an air inlet passage, an inflation inlet, an air outlet passage and an air outlet. The motor has two output shafts, the first fan is connected with one of the output shafts and located at one end of the air inlet passage, and the second fan is connected with another output shaft and located at one end of the air outlet passage. The second and the first fans are configured to rotate at a same direction, and the inflation inlet is located between the first and the second fans. The first switch unit is adapted to connect or disconnect the first air inlet with the air inlet passage, and the second switch unit is adapted to connect or disconnect the air outlet with the air outlet passage. The air pump has simple structure, convenient control and low cost.

Abstract: The present disclosure relates to an engine control device for hybrid construction machinery, and more particularly, and an object of the present disclosure is to, in a hybrid excavator, in which a swing apparatus is electrically driven by being separated from a hydraulic power train system in the related art, satisfy a minimum rotational speed of an engine auxiliary motor which is necessary to satisfy a target charging amount required for an energy storage device, and improve fuel efficiency by removing unnecessary energy loss at low loads by controlling a rotational speed of an engine to be lower than a rotational speed of an engine determined based on a dial input and a mode input in the related art, in a case where a target power generation amount of the engine auxiliary motor is small in a low-load work situation.

Abstract: A centrifugal blower includes a stator housing. The stator housing includes a radial contact surface which makes contact with a casing in a radial direction, a circumferential contact surface which makes contact with the casing in a circumferential direction, and an axial contact surface which makes contact with the casing in an axial direction. With such configuration, it is possible to reduce the vibration of the blower by increasing a contact area between the casing and the stator housing. Further, the stator housing includes a heat dissipating surface. As a result, it is possible to efficiently dissipate the heat, which is generated from the stator, from the heat dissipating surface of the stator housing to the gas existing within the wind tunnel.

Abstract: A centrifugal blower apparatus includes a scroll-shaped housing with first and second air inlets which open to a blower chamber that is in fluid communication with an air outlet. The blower includes a motor to drive impellers, wherein the motor is secured to a frame coupled within the housing in a manner to substantially enhance aerodynamic performance of the blower.

Abstract: The submerged centrifugal electric pump comprises an external casing (2) comprising a first and a second tubular portion (5, 7) suitable to be connected coaxial to one another, a pumping unit (3) inserted axially in the first portion (5) of the casing (2) to suction a liquid through a suctioning opening (101) and transfer the liquid in outlet through a discharge opening (11), and a motor unit (4) inserted in the second tubular portion (7) of the casing (2) and provided with a motor shaft (15) suitable to be connected in use to the pumping unit (3). The centrifugal electric pump comprises means (19) for fixing the axial position of the motor shaft (15) interposed between the motor unit (4) and the pumping unit (3).

Abstract: An appliance for vacuum packaging and sealing a container, including: a vacuum motor assembly generating suction, a vacuum trough fluidly connected to the vacuum motor assembly, first and second heat sealing elements, and a microprocessor configured to control the vacuum motor assembly and the first and second heating elements in programmable sequences. One programmable sequence may include energizing the vacuum motor assembly to provide suction to the vacuum trough, energizing the first heat sealing element at a first predetermined temperature for a first predetermined time when a first predetermined vacuum level is reached in the vacuum trough, de-energizing the vacuum motor assembly after a third predetermined time has elapsed after the first heat sealing element has been de-energized, delaying a dwell time, and energizing the second heat sealing element at the expiration of the dwell time at a second predetermined temperature for a second predetermined time.

Abstract: The present pump devices provide a dual pump using two (or more) electric motors (e.g. brushless DC motors) driving the pumps independently, including integration of hydraulic and electrical components and connectors. The illustrated arrangements include an in-line single shaft version, a parallel separate shaft version, and an inside-outside version. Each configuration includes a housing supporting formation of: shared structural support for the pumps and motors (e.g., bearings, stator, relationship of components), fluid pump and hydraulic system (e.g., fluid passageways, ports connectors) and motor electrical control (e.g., control circuitry and sensory components).

Abstract: An example compressor arrangement includes a first compressor portion configured to compress a fluid and a second compressor portion configured to compress the fluid more than the first compressor portion. The compressor arrangement also includes a motor disposed between the first compressor portion and the second compressor portion. The first compressor portion is configured to communicate the fluid to the second compressor portion along a primary flow path. The second compressor portion is configured to divert at least some of the fluid from the primary flow path, communicating the diverted fluid back to the first compressor portion along a secondary flow path.

Abstract: A fan motor includes a pair of fans axially mounted to both sides of a rotary shaft of the motor. The motor includes an inner rotor placed inside a stator wound with windings and an outer rotor placed outside the stator. The motor thus has a dual-rotor structure where the inner rotor and the outer rotor are held such that both the rotors can rotate on the rotary shaft.

Abstract: A headgear-mountable respirator (100) including a first intake (106A) and first associated impeller (108A), as well as a second intake (106B) and second associated impeller (108B) located remotely from the first intake and the first impeller. The respirator further includes a device (112) for, in use, rotating at least one of the impellers, and an air delivery arrangement (103A, 103B) for, in use, delivering air drawn from the first and second intakes to a facial region of a user.

Abstract: For refrigeration units, maintenance machines are required that can receive and compress the refrigerant from the refrigeration unit. Furthermore, a vacuum pump is required, which is connected to the emptied lines and pumps out humidity and air. The maintenance machine according to the invention includes a motor that drives a compressor via a freewheel in one rotational direction. The same motor drives a vacuum pump via a second freewheel in the other rotational direction. The maintenance machine, which can perform two different functions, includes only one single motor. The machine is lightweight, so that it can be carried by the maintenance personnel. Furthermore, it is small and can be produced in a cost-effective manner.

Abstract: A controller for a heart pump, the controller including a processing system for determining movement of an impeller within a cavity in a first axial direction, the cavity including at least one inlet and at least one outlet, and the impeller including vanes for urging fluid from the inlet to the outlet, causing a magnetic bearing to move the impeller in a second axial direction opposite the first axial direction, the magnetic bearing including at least one coil for controlling an axial position of the impeller within the cavity, determining an indicator indicative of the power used by the magnetic bearing and causing the magnetic bearing to control the axial position of the impeller in accordance with the indicator to thereby control a fluid flow between the inlet and the outlet.

Abstract: A blower includes a stationary portion including an inlet and an outlet, a rotating portion provided to the stationary portion, and a motor adapted to drive the rotating portion. The inlet and outlet are co-axially aligned. The stationary portion includes a housing, a stator component provided to the housing, and a tube providing an interior surface. The rotating portion includes one or more bearings that are provided along the interior surface of the tube to support a rotor within the tube. In an embodiment, the blower is structured to supply air at positive pressure.

Abstract: A blower includes an electric motor having a shaft, a housing having a housing inlet and a housing outlet between which is defined a flow path for gas, a first impeller having a plurality of blades adapted to accelerate gas tangentially and to direct it radially outward, and a stationary portion. The stationary portion includes a gas flow path defined between an external wall of the motor and a wall of the stationary portion, a first stationary vane structure located downstream of the first impeller, and a shield constructed and arranged to provide a barrier between the first stationary vane structure and the blades of the first impeller to isolate leading edges of the first stationary vane structure from an impeller blade pressure pulse. The flow path is of sufficient width to allow a flow of gas therethrough without introducing excessive pressure drop.

Abstract: An electric ventilator (1) comprises a frame (2), a pair of centrifugal fans (3) mounted on the frame (2), an electric motor (4) for driving the fans (3) and axially interposed between the fans (3), and a unit (5) for controlling the speed of the motor (4); the speed control unit (5) comprises a plurality of electrical switching resistors (7) housed in a box-shaped container (8) that can be closed and sealed; the container (8) is mounted on the frame (2) and has the shape of a bridge so as to surround the casing (13) of the motor (4) without touching it.

Abstract: A pump (10) includes a housing, a stator (20) supported in the housing, and a rotor assembly (30). The rotor assembly (30) includes a rotor (32) supported in the housing for rotation relative to the stator (20) about an axis (12). The rotor assembly (30) also includes a first impeller (34) operatively coupled to a first axial end of the rotor (32) for rotation with the rotor about the axis (12). The rotor assembly further includes a second impeller (36) operatively coupled to a second axial end of the rotor (32), opposite the first axial end, for rotation with the rotor about the axis (12). The rotor assembly (30) is movable along the axis (12) relative to the housing to adjust hydraulic performance characteristics of the pump (10).

Abstract: A series-connected motor unit includes a first motor, a second motor and a separation member. The first motor has a first circuit board and the second motor has a second circuit board. The separation member has a first face and a second face opposite to the first face, wherein the first face abuts against the first circuit board and the second face abuts against the second circuit board.

Abstract: A double-ended variable speed blower for Continuous Positive Airway Pressure (CPAP) ventilation of patients includes two impellers in the gas flow path that cooperatively pressurize gas to desired pressure and flow characteristics. Thus, the double-ended blower can provide faster pressure response and desired flow characteristics over a narrower range of motor speeds, resulting in greater reliability and less acoustic noise.

Abstract: A rotating shaft is supported by journal bearings that can support without contacting the rotating shaft itself. Then, one end of both shaft end portions of the rotating shaft has a main impeller installed and the other end is provided with a sub impeller. By utilizing a force being generated by rotation of the main impeller, liquid being pumped (fluid being pumped) is sucked in through a suction port and discharged through a discharge port. On the other hand, by utilizing a force being generated by rotation of the sub impeller, fluid is transported to the journal bearings, thereby having the journal bearings support the rotating shaft.

Abstract: A two-stage pump having an internal fluid pathway or cycle for providing cooling to various parts in the pump, such as, an electric motor in the pump, and also for lubricating at least one or a plurality of bearings in the pump. The pump utilized hydrodynamic bearings that are adapted or configured to provide various passageways, channels and the like for using the fluid that is being pumped by the pump as lubrication for at least one or a plurality of bearings in the pump.

Abstract: A pump (10) includes a housing, a stator (20) supported in the housing, and a rotor assembly (30). The rotor assembly (30) includes a rotor (32) supported in the housing for rotation relative to the stator (20) about an axis (12). The rotor assembly (30) also includes a first impeller (34) operatively coupled to a first axial end of the rotor (32) for rotation with the rotor about the axis (12). The rotor assembly further includes a second impeller (36) operatively coupled to a second axial end of the rotor (32), opposite the first axial end, for rotation with the rotor about the axis (12). The rotor assembly (30) is movable along the axis (12) relative to the housing to adjust hydraulic performance characteristics of the pump (10).

Abstract: A pumping apparatus for pumping a liquid from a source to a target including a motor, a first pump driven by the motor, a second pump driven by the motor and a separator in fluid communication with the first and second pump for separating a liquid received from a source into a gaseous component and a liquid component. The separator further diverts the gaseous component to the first pump and the liquid component to the second pump, wherein the first pump pumps the gaseous component back to the source and the second pump pumps the liquid component to a target.

Abstract: A pump (10) includes a housing, a stator (20) supported in the housing, and a rotor assembly (30). The rotor assembly (30) includes a rotor (32) supported in the housing for rotation relative to the stator (20) about an axis (12). The rotor assembly (30) also includes a first impeller (34) operatively coupled to a first axial end of the rotor (32) for rotation with the rotor about the axis (12). The rotor assembly further includes a second impeller (36) operatively coupled to a second axial end of the rotor (32), opposite the first axial end, for rotation with the rotor about the axis (12). The rotor assembly (30) is movable along the axis (12) relative to the housing to adjust hydraulic performance characteristics of the pump (10).

Abstract: A liquid-cooled electric motor with a motor shaft, with two bearing plates which are mounted on the end faces of the motor housing and which carry on each side at least one bearing, the motor shaft being mounted rotatably in the bearings, and with at least one rotating hydraulic pump, the drive shaft of which is connected to the motor shaft by way of a coupling and which is driven by the electric motor. The casing of the motor housing receives a cooling liquid, has an at least partially hollow design and forms a casing cavity. At least one connecting duct for the supply of cooling liquid from the casing cavity to the bearings for cooling and lubrication of the bearings is provided in each of the bearing plates and in that said flanged-on hydraulic pump is sealed off in a liquid-tight manner with respect to the bearing plate interiors.

Abstract: A two-stage compressor for generating necessary pressure differential for air-conditioning applications with air-cooled, water-cooled and evaporative-cooled condensing systems using low-pressure refrigerant, such as R134a, is provided. A rotating assembly is mounted for rotation in a compressor housing and includes a shaft, a thrust bearing disk associated with the shaft to maintain an axial position of the rotating assembly, a motor rotor mounted on the shaft, and first and second impellers mounted for rotation with the shaft. First and second journal bearings are mounted in the compressor housing to support the shaft and maintain radial positioning of the rotating assembly. Volute housings including a spiral-shaped volute are associated with each of the impellers to collect and further discharge gas compressed by the impellers. Diffusers having air-foil shaped vanes are locate in the volute channels adjacent the discharge outlets of the impellers to aide in the discharge of gas from the impellers.

Abstract: A double-ended variable speed blower for Continuous Positive Airway Pressure (CPAP) ventilation of patients includes two impellers in the gas flow path that cooperatively pressurize gas to desired pressure and flow characteristics. Thus, the double-ended blower can provide faster pressure response and desired flow characteristics over a narrower range of motor speeds, resulting in greater reliability and less acoustic noise.

Abstract: A dual fan blower module of the present invention includes a housing defining a central motor compartment and first and second scroll chambers. The scroll chambers are axially aligned with and located on opposite sides of the motor compartment. A motor is mounted within the motor compartment and has first and second shaft ends extending axially therefrom. The first shaft end extends into the first scroll chamber and the second shaft end extends into the second scroll chamber. A first fan is mounted onto the first shaft end within the first scroll chamber for rotational movement within the first scroll chamber and a second fan is mounted onto the second shaft end within the second scroll chamber for rotational movement within the second scroll chamber. Each of the first and second scroll chambers includes an expansion channel extending axially inward toward the motor.

Abstract: A first hydraulic pump and a second hydraulic pump are respectively mounted to both ends of a rotary shaft in an electric motor, whereby it is possible to drive both of the first hydraulic pump and the second hydraulic pump by one electric motor. Since the electric motor is driven and controlled so as to have any higher rotational speed among a rotational speed of the first hydraulic pump for obtaining an amount of working fluid required in a hydraulic control circuit for a power steering apparatus and a rotational speed of the second hydraulic pump for obtaining an amount of working fluid required in a hydraulic control circuit for a power train by a hydraulic pump drive controlling portion, it is possible to necessarily and sufficiently secure the working fluids respectively required in the power steering hydraulic control circuit and the power train hydraulic control circuit which are independent from each other, by a little electric power consumption.

Abstract: A cooling system for a fuel cell and a fuel cell powered vehicle are disclosed. The cooling system and the fuel cell powered vehicle have a primary circulation passage adapted to circulate primary coolant for cooling the fuel cell, and a secondary circulation passage adapted to circulate secondary coolant for cooling a heat generating source including at least an electric vehicle motor. The primary coolant and the secondary coolant are driven by primary and secondary circulation pumps that are circulated by a single common drive motor, with the primary coolant being cooled with the secondary coolant in a common heat exchanger.

Abstract: A dual drive system for a hydraulic pump and an air boost compressor is provided. Reversible power is transmitted to a shaft connected to clockwise and counterclockwise over-running clutches connected to different vehicle or equipment subsystems. Reversing the drive allows power to be alternately transmitted to one or the other of the subsystems. The invention includes utilizing the dual drive for hydraulic and air conditioning systems for an aircraft, with the provision of an additional drive motor providing constant power to one or more of the subsystems.

Abstract: The present invention provides a high-pressure blower comprising a fan arrangement which includes a fan (82), and a fan housing (83) for conveying working air. An electromotor drives the fan (82) via a motor shaft (72) with means for motor self-ventilation by generating a cooling air stream flowing through the motor by means of a cooling wheel driven by the rotor. A wall section (70) separates the interior space of the fan housing (83) accommodating the fan (82) airtight from the interior space of the blower accommodating the electromotor (2) so that the cooling air stream flowing through the electromotor is separated and independent of the air flow of the working air conveyed to the fan (82).

Abstract: A centrifugal compressor assembly, especially one having two or more stages, comprises a first compressor casing having. A fluid inlet and a fluid outlet and a first impeller rotatable within the first compressor casing. The assembly further comprises a second compressor casing having a fluid inlet and a fluid outlet and a second impeller rotatable within the second compressor casing. Drive for the compressors is provided by an electric motor, preferably a permanent magnet motor, disposed between the first and second compressor casings and comprising a stator and a rotor rotatable within the stator. A drive shaft is provided, wherein the first impeller, second impeller and the rotor are mounted on the drive shaft and rotatable therewith.

Abstract: An air compressor, air storage, and high pressure cleaning machine structure comprised of an air compression and air storage mechanism and a high pressure cleaning mechanism that are powered by a single electric motor in an integrated arrangement, wherein the two protruding ends of a main shaft in the electric motor are inserted into a unidirectional bearing, following which they are respectively coupled to the air compression, air storage mechanism and the high pressure cleaning mechanism. The two mechanisms are installed on a foldable two-section wheeled frame and the user controls the electric motor with a toggle switch to selectively deviate the main shaft in the electric motor towards one of the two unidirectional bearings such that said electric motor drives either the air compression and air storage mechanism or the high pressure cleaning mechanism. As such, the two-in-one arrangement effectively reduces space occupancy and facilitates operating convenience.

Abstract: An electric motor pump with axial-flow impellers includes an electric motor having an output shaft both end portions of which are connected to axial-flow impeller units, and a pair of pump housings provided on both sides of the motor in the longitudinal direction of the output shaft and including fluid inlet and outlet ports, the pump housings cooperating with the impeller units to suck fluid into the housings through the inlet ports, move the fluid in the longitudinal direction and discharge the fluid from the outlet ports, thrust forces applied to the output shaft by the impeller units are canceled.

Abstract: A multi-stage centrifugal compressor multi-stage centrifugal compressor with an integral high-speed motor for compressing air has a variable speed permanent magnet motor having electronically commutated stator coils surrounding a rotor carrying permanent magnets, wherein there is a gap between the coils and the rotor. The rotor has a magnetic steel rotor shaft rotatably supported at each end by pressurized oil lubricated hydrodynamic bearings. The stator coils have a plurality of stator wires extending longitudinally along the stator and continuing around the ends of the stator to define end turns. The compressor also has a plurality of compressor impellers mounted to turn with the rotor shaft and cooler for cooling the bearings, rotor and stator coils comprising a pump for introducing cooled oil into the bearings, said bearing configured so that oil exiting from the bearings splashes over the supported ends of the shaft and splashes over the end turns of the stator coils.

Abstract: The present invention relates to a turbo compressor which is capable of minimizing deformation of construction parts which may occur in welding or after welding and simplifying the manufacture and assembly by forming the outer diameter of a driving shaft so as to be stepped and joining the construction parts with bolts and pins.

Abstract: A high-efficiency motor/pump system (20) for jetted baths/spas includes a pump assembly (22) removably secured to a motor assembly (24). The motor assembly (24) includes a motor (26) having a conventional laminated stator (30), a front housing (32) at the forward end of the motor (26), a rear housing (34) at the back end of the motor (26), and a ventilation plate (36) at the end of the rear housing (34). An armature-mounted internal fan (104) draws ambient air through openings in a ventilation plate (36) and forces the air through annular channels (80) in the rear housing (34) to effect cooling of the motor (26). The motor (26) is of the permanent split-capacitor type to eliminate the centrifugal switch commonly used in capacitor-start induction motors to thereby improve reliability. Additionally, telescoping structures on the forward end of the motor assembly and the rearward end of the pump assembly facilitate self-aligning assembly of the components.

Abstract: The present invention relates to a space-saving and weight-saving motor-and-pump assembly which comprises a drive motor and a pump unit driven by the shaft of the said motor. In order to supply in parallel as many media as possible with an assembly of this type, the present invention suggests the additional integration of at least one second pump unit, driven by the motor shaft of the drive motor, into the motor-and-pump assembly.

Abstract: The invention relates to a method for generating over-pressure gas by means of a kinetic compressor which is coupled to a high-speed electric machine located on the same shaft with the compressor and comprising a rotor whose rotational speed is over 20,000 rpm. The compressor is provided with at least two stages. The shaft of the rotor is mounted on a magnetic and/or gas bearings, and the high-speed electric machine is placed centrally on the shaft with respect to the compressor stage of the compressor. The rotor is mounted on a magnetic bearing at least in the axial direction, and the ends of the rotor are used at least partly as counter surfaces for the axial magnetic bearing.