Abstract: For grounding or electrically charging the shaft of an electrostatic rotary atomizer working with external or direct charging, there are opposing, annular or spiral-shaped sharp edges in the outer surface of a part of the shaft and in the inner surface of a stationary bearing part at the desired potential, which have different, preferably opposite, thread directions, so that the edges intersect each other at points.

Abstract: A turbine housing for a high-pressure turbo-charger of a turbo-charger engine system for an internal combustion engine is provided that includes, but is not limited to a low-pressure charger opening for taking up a low-pressure turbo-charger and a high-pressure charger opening for taking up a high-pressure turbo-charger. A high-pressure exhaust opening is attached to a corresponding flange at an exhaust manifold of the engine and there is a short-cut exhaust opening with a high-pressure turbine by-pass valve area attached to a corresponding flange at the exhaust manifold. An external connection opening is attached to a muffler, a waste gate valve area being provided in the close vicinity of the external connection opening.

Abstract: A turbine housing for a high-pressure turbo-charger of a turbo-charger engine system for an internal combustion engine is provided that includes, but is not limited to a low-pressure charger opening for taking up a low-pressure turbo-charger and a high-pressure charger opening for taking up a high-pressure turbo-charger. A high-pressure exhaust opening is attached to a corresponding flange at an exhaust manifold of the engine and there is a short-cut exhaust opening with a high-pressure turbine by-pass valve area attached to a corresponding flange at the exhaust manifold. An external connection opening is attached to a muffler, a waste gate valve area being provided in the close vicinity of the external connection opening.

Abstract: An atomizer assembly (10) drives an atomizing bell (108) to apply paint onto a part (14). The atomizer assembly (10) includes a core (24) having at least one paint line (26) extending therethrough, a turbine device (40) circumscribing an axis (A) and disposed in the core (24), and a turbine unit (62) surrounding the pain line (26) and having a shaft (104) rotatable relative the turbine device (40) with several turbine blades (130) connected to the shaft (104). A plurality of nozzles (64, 66, 68) are defined in the turbine device (40) and are positioned relative a turbine wheel (106) connected to the shaft (104) to drive fluid, i.e. gas onto the turbine blades (130). An annular wall (94) extends outwardly from one of the terminal ends of the turbine device (40) to define a seat (96) for engaging the core (24) to maintain a fixed gap between the paint line (26) and the shaft (104) and to eliminate contact therebetween.

Abstract: Arrangement for cooling a compressor comprising a housing (Ia, Ib) with an inlet (13) and an outlet (14) and enclosing in its volume (12) a stator including stator winding (2) and stator iron (3) of an electric motor, which drives a rotor (9) with a shaft (6). The invention is characterized in that the volume (12) is arranged separated from the rotating parts (9, 6) in a sealed manner.

Abstract: Method for gas bearings comprising two relatively rotating parts, one part of which consists of a spindle shaft and the other part of which is provided with a bearing surface and is made from a material through which gas can be conducted to the bearing gap, for producing holes conducting gas to the bearing surface, distinguished by the steps: (a) with the aid of a high-energy beam directed towards the bearing surface, a certain number of first holes smaller than the final number of holes calculated from experience are made in the bearing surface to make a primary airflow through this part of the bearing surface possible; (b) the preliminary airflow is measured; (c) on the basis of the measured airflow, the exact number necessary of additional second holes to be made in order to obtain the desired necessary airflow is calculated; (d) the calculated number of additional second holes are made in the bearing surface.

Abstract: Compressor comprising a housing (1a, 1b) and with at least one partly electric-motor-driven impeller (3) arranged on a central shaft (5). The invention is characterized in that the impeller (3) is provided with a tubular part (6) surrounding the central shaft (5), and also in that a tubular carrier (2) extending in between the central shaft (5) and the tubular part (6) is arranged firmly on the housing, in which carrier (2) the central shaft (5) is rotatably mounted.

Abstract: Arrangement of a two stage turbocharger system for an internal combustion engine comprising an intake manifold and an exhaust manifold, comprising a low-pressure turbocharger, a high-pressure turbocharger and a bypass duct in flow communication with an outlet of the low-pressure compressor, an inlet of the high-pressure compressor, an outlet of the high-pressure compressor and an inlet of the intake manifold. The bypass duct comprises a first bypass valve for opening and closing the bypass duct. The first bypass valve and the high-pressure compressor are accommodated within a common housing.

Abstract: Arrangement for painting spindles for coating a surface with paint particles, comprising a spindle shaft (4), which is driven by an electric motor and mounted in air bearings, and, fixed on this shaft, a means (8) delivering the particles, and which has an electric potential difference relative to the object to be coated, wherein the spindle shaft (4) is mounted in at least one radial bearing (6) and also two axial bearings (7) positioned on respective sides of the rotor (13) of the motor, which rotor constitutes the axial support of the axial bearings (7).

Abstract: Arrangement for a painting spindle, comprising a spindle shaft (4) rotatably mounted in air bearings (6) in the housing (3) of the arrangement and with a cantilever end provided with a painting bell (8) delivering the particles, and is characterized by that the cantilever end of the spindle shaft (4) is surrounded by at least one chamber (22) which is connected to the housing (3) and open towards the spindle shaft (4) and to which the bearing air from the gap of the radial bearing will move, the said air being removed from the chamber (22) through the gap formed between the chamber (22) and the spindle shaft (4).

Abstract: Arrangement for coating of a surface with particles, comprising a spindle shaft (4) driven by an electric motor and provided with a means (8) which delivers the particles during rotation of the spindle shaft, wherein the motor control (34) integrated in the arragement (2) contains an identifying code, which can be read by the power supply of the electric motor.

Abstract: A turbine, e.g., with a blade arrangement, which receives an air flow in the radial direction and which is located on a carrier surface of the turbine wheel, is used as a drive motor for a rotary atomizer. The drive channel, which contains the turbine blades and which is limited by the carrier surface, is also closed on its other side by a cover element, which is attached to the turbine wheel and which rotates with the wheel for increasing efficiency. For an additional increase in efficiency, the inlet for the drive air of the turbine is configured as an ultrasonic nozzle with a cross section that expands continuously up to the opening.

Abstract: Method for a painting spindle (see FIGS. 15, 16, 17) comprising a housing (3) and a spindle shaft (4) mounted rotatably therein, which is provided at its one, free end with a painting bell screwed onto the spindle shaft (4), a counter-torque having to be taken up during mounting and demounting of the painting bell by screwing the bell on and unscrewing it. The method is characterized by that the arrangement is designed in such a way that the counter-torque is transmitted to the housing (3) with free translation of the spindle shaft (4) in the radial plane being allowed but rotation of the spindle shaft (4) relative to the housing (3) being prevented.

Abstract: Arrangement for coating a surface with particles, comprising a spindle shaft (4) driven by an electric motor and provided with a means (8) which delivers the particles during rotation of the spindle shaft (4). The arrangement is characterized by that the motor control (34) integrated into the painting spindle (2) contains a unit which can detect the frequency superposed in the power supply, which constitutes a multiple of the desired feed frequency to the electric motor, in order to obtain the desired speed.

Abstract: Method for an arrangement for coating a surface with particles (see FIG. 2), comprising a painting spindle, driven by an electric motor (11, 12, 13), with a spindle shaft (4) and a means (8) mounted on the latter and delivering the particles by means of centrifugal force, and which has an electric potential difference relative to the surface to be coated, and also a shaping airflow (10) deflecting the particles towards the surface. The method is characterized by that at least part of the shaping airflow (10) is conducted through the stator iron (11) of the electric motor for dissipation of heat generated in the motor.

Abstract: Painting spindle comprising a housing (3) with, mounted rotatably therein, a spindle shaft driven by an electric motor, and which at one end has a painting bell (8), the potential of which is considerably higher than that of the object to be painted, an axially shaping airflow forcing the particles thrown out by the painting bell (8) towards the object, and also with connection means such as mounting bolts (36) and air connections for the functioning and operation of the painting spindle. The painting spindle have at least one connection means electrically conductive and electrically separated from the housing (3) and also electrically connected to the motor or its control electronics (34).

Abstract: A method for withdrawing liquid from the liquid bearings of a spindle (1) carried in liquid bearings (3, 5) distinguished in that with the help of pressurized gas, the liquid, together with the gas, is forced to exit the spindle during the operation of the spindle via at least one first channel (12), and that when the spindle is shut down, is forced to exit via at least one second channel (13) with a smaller flow-through cross-section than the first channel.

Abstract: A rotational atomizer turbine of the present invention is designed to drive a bell-shaped disk in a rotational atomizer for a coating unit. The rotational atomizer turbine includes a housing, a rotatable turbine wheel with several turbine blades connected to a shaft and rotatably disposed in the housing. A plurality of nozzles are defined in the housing and are positioned relative the turbine wheel to drive fluid, i.e. gas onto the turbine blades. An intermediate chamber formed in the housing is fluidly communicated with and connected to the nozzles to hold gas therein. The intermediate chamber has a first inlet to supply gas. At least a second inlet is defined in the intermediate chamber for delivering gas into the intermediate chamber thereby increasing amount of gas therein to multiply a rotational speed of the rotatable turbine wheel as increased amount of gas is introduced to the turbine blades.

Abstract: An atomizer assembly (10) drives an atomizing bell (108) to apply paint onto a part (14). The atomizer assembly (10) includes a core (24) having at least one paint line (26) extending therethrough, a turbine device (40) circumscribing an axis (A) and disposed in the core (24), and a turbine unit (62) surrounding the pain line (26) and having a shaft (104) rotatable relative the turbine device (40) with several turbine blades (130) connected to the shaft (104). A plurality of nozzles (64, 66, 68) are defined in the turbine device (40) and are positioned relative a turbine wheel (106) connected to the shaft (104) to drive fluid, i.e. gas onto the turbine blades (130). An annular wall (94) extends outwardly from one of the terminal ends of the turbine device (40) to define a seat (96) for engaging the core (24) to maintain a fixed gap between the paint line (26) and the shaft (104) and to eliminate contact therebetween.

Abstract: For grounding or electrically charging the shaft of an electrostatic rotary atomizer working with external or direct charging, there are opposing, annular or spiral-shaped sharp edges in the outer surface of a part of the shaft and in the inner surface of a stationary bearing part at the desired potential, which have different, preferably opposite, thread directions, so that the edges intersect each other at points.