Abstract: An electrical machine comprising a rotor and a stator. The rotor comprises at least one permanent magnet; at least one magnet slot interior to the rotor, configured to hold the permanent magnet, which magnet slot comprises at least one end portion at a rotor surface of the rotor; at least one magnet bridge arranged in the rotor surface, configured to cover the end portion of the magnet slot; and at least one axially extending groove in the rotor surface, arranged adjacent to the at least one magnet bridge.

Abstract: The present invention relates to an arrangement for cooling of an electrical machine. The electrical machine comprises a rotor rotatably arranged around a rotation axis, a stator including a stator winding arranged radially outside of the rotor, a housing enclosing the rotor and the stator, at least one drain hole configured to drain a cooling fluid from the housing, at least one spraying device configured to spray cooling fluid on the stator winding and a pump configured to pump cooling fluid to the spraying device. The arrangement comprises a control unit, which is configured, when the electrical machine is in operation, to receive information of the temperature in at least one position of the stator winding and to control the pump such that it pumps a flow rate of the cooling fluid to the spraying device, which is related to the estimated temperature of the stator winding.

Abstract: The present invention relates to an arrangement for cooling of an electrical machine. The electrical machine comprises a rotor rotatably arranged around a rotation axis, a stator including a stator winding arranged radially outside of the rotor, a housing enclosing the rotor and the stator, at least one drain hole configured to drain a cooling fluid from the housing, at least one spraying device configured to spray cooling fluid on the stator winding and a pump configured to pump cooling fluid to the spraying device. The arrangement comprises a control unit, which is configured, when the electrical machine is in operation, to receive information of the temperature in at least one position of the stator winding and to control the pump such that it pumps a flow rate of the cooling fluid to the spraying device, which is related to the estimated temperature of the stator winding.

Abstract: The present invention relates to an arrangement for cooling of an electrical machine. The electrical machine comprises a rotor rotatably arranged around a rotation axis, a stator including a stator winding arranged radially outside of the rotor, a housing enclosing the rotor and the stator, at least one drain hole configured to drain a cooling fluid from the housing, at least one spraying device configured to spray cooling fluid on the stator winding and a pump configured to pump cooling fluid to the spraying device. The arrangement comprises a control unit, which is configured, when the electrical machine is in operation, to receive information of the temperature in at least one position of the stator winding and to control the pump such that it pumps a flow rate of the cooling fluid to the spraying device, which is related to the estimated temperature of the stator winding.

Abstract: An electrical connecting device for a machine includes a fitting element (2) to be fitted in an aperture (1a) of a wall element (1), at least one connecting element (3) which has a first end (3a) with a first connection unit (3b) for an electric cable which is situated outside the wall element (1), a second end (3c) with a second connecting element (3d) for an electric cable which is situated within the internal space, and an intermediate portion (3e) to be fitted in an aperture (2c) which runs through the fitting element (2); a sealing (5) makes a tight connection between the connecting element (3) and the fitting element (2) in the aperture (2c). The fitting element (2) is made integrally from a first material. The connecting element (3) is made integrally from a second material. The connecting element (3) and the fitting element (2) are provided with mutually cooperating surfaces (2c1, 2c2, 3e1, 3e2) which define a predetermined fitting position for the connecting element (3) in the aperture (2c).

Abstract: An electrical connecting device for a machine includes a fitting element (2) to be fitted in an aperture (1a) of a wall element (1), at least one connecting element (3) which has a first end (3a) with a first connection unit (3b) for an electric cable which is situated outside the wall element (1), a second end (3c) with a second connecting element (3d) for an electric cable which is situated within the internal space, and an intermediate portion (3e) to be fitted in an aperture (2c) which runs through the fitting element (2); a sealing (5) makes a tight connection between the connecting element (3) and the fitting element (2) in the aperture (2c). The fitting element (2) is made integrally from a first material. The connecting element (3) is made integrally from a second material. The connecting element (3) and the fitting element (2) are provided with mutually cooperating surfaces (2c1, 2c2, 3e1, 3e2) which define a predetermined fitting position for the connecting element (3) in the aperture (2c).

Abstract: A propulsion system for a vehicle has output shaft (2) of a combustion engine (1), which is connected to a first component (9) of a planetary gear so that they rotate at a first speed (n1). An input shaft (3) of a gearbox (4) is connected to a second component (11) of the planetary gear so that they rotate at a second speed (n2). An electrical machine is connected to a third component (10) of the planetary gear so that the third component (10) rotates at a third speed (n3). A control unit (17) estimates in appropriate operating situations a desired speed (n2) for the gearbox input shaft (3). The unit receives information about the speed (n1) of the engine output shaft (2). It causes the electrical machine to give the third component (10) of the planetary gear a speed (n3) which in conjunction with the speed (n1) of the engine output shaft (2) results in the gearbox input shaft (3) assuming the desired speed (n2).

Abstract: A propulsion system for a vehicle has output shaft (2) of a combustion engine (1), which is connected to a first component (9) of a planetary gear so that they rotate at a first speed (n1). An input shaft (3) of a gearbox (4) is connected to a second component (11) of the planetary gear so that they rotate at a second speed (n2). An electrical machine is connected to a third component (10) of the planetary gear so that the third component (10) rotates at a third speed (n3). A control unit (17) estimates in appropriate operating situations a desired speed (n2) for the gearbox input shaft (3). The unit receives information about the speed (n1) of the engine output shaft (2). It causes the electrical machine to give the third component (10) of the planetary gear a speed (n3) which in conjunction with the speed (n1) of the engine output shaft (2) results in the gearbox input shaft (3) assuming the desired speed (n2).

Abstract: A mixer assembly for generating and maintaining a motion within a volume of liquid, the mixer assembly including a motor, a drive shaft and a propeller connected to the drive shaft. When the propeller is in operation, it is driven by the motor and rotates about a propeller axis. The mixer assembly's motor comprises a stator and a hybrid type rotor. The hybrid rotor includes a rotor core comprising an annular radially outer section of asynchronous type and an annular radially inner section of synchronous type arranged radially inside the annular radially outer section.

Abstract: The present invention relates to a method for mounting magnet elements on the surface of a rotor for use in a permanent magnet motor. The method comprises the steps of : providing a first tube like element, wherein said first tube like element has an inner diameter that corresponds to an outer diameter of said rotor, providing a second tube like element, wherein said second tube like element has an inner diameter that is larger than an outer diameter of said first tube like element, inserting said first tube like element into said second tube like element, in order to create a hollow space between them, inserting a number of magnet elements into said hollow space, and inserting said rotor into said first tube like element, whereupon said magnet elements are in a tight fit arrangement between said first tube like element and said second tube like element.

Abstract: The present invention relates to a method for mounting magnet elements on the surface of a rotor for use in a permanent magnet motor. The method comprises the steps of : providing a first tube like element, wherein said first tube like element has an inner diameter that corresponds to an outer diameter of said rotor, providing a second tube like element, wherein said second tube like element has an inner diameter that is larger than an outer diameter of said first tube like element, inserting said first tube like element into said second tube like element, in order to create a hollow space between them, inserting a number of magnet elements into said hollow space, and inserting said rotor into said first tube like element, whereupon said magnet elements are in a tight fit arrangement between said first tube like element and said second tube like element.

Abstract: The invention refers to a method for an integrated treatment of cellulose pulp. The method includes the steps: providing said cellulose pulp (1), providing a determined quantity of white liquor (2) including alkali and sulphur components, providing an oxygen-containing gas, oxidizing (5) the sulphur components of the white liquor by the supply of a part of said gas in such a way that at least a part of the sulphur is present in the form of sulphate, transporting the cellulose pulp having a certain kappa number to at least one mixing device (4), and supplying the oxidized white liquor from the oxidizing step to the cellulose pulp, supplying a part of said gas to the cellulose pulp in said mixing device, mixing the cellulose pulp with the oxidized white liquor and said gas in said mixing device, and transporting the cellulose pulp from said mixing device to a delignification reactor (6) for oxygen delignification of said cellulose pulp, wherein the kappa number is reduced.

Abstract: The present invention relates to a member (1) arranged to act between two parts of a vehicle which are movable in relation to each other. The member (1) comprises a first portion (2) having an elongated rod (6) with external threads (7) and a second portion (3) having a nut (8) rotatably provided on the rod (6) so that the length of the member (1) during a rotary motion between the rod (6) and nut (8) is variable in an axial direction (L). An electric rotor machine (10), having a stator (11) and a rotor (13) which is rigidly connected to said nut (8), is arranged to influence said rotary motion. The rotor (13) and nut (18) are so positioned in relation to each other that at least a radial plane with respect to the axial direction (L) extends both through the rotor (13) and the nut (8).

Abstract: A process for the production of essentially chlorine free chlorine dioxide whereby a flow of chlorine dioxide obtained from reduction of alkali metal chlorate and containing by-product of chlorine gas is absorbed in water and the chlorine gas is treated with formic acid in the water solution. The formic acid is added in an amount resulting in a mole ratio formic acid to chlorine gas of >1:1.

Abstract: A process for the production of chlorine dioxide by reacting in a reaction vessel an alkali metal chlorate, mineral acid and a reducing agent in such proportions that chlorine dioxide is produced in a reaction medium which is maintained at a temperature of from about 50.degree. C. to about 100.degree. C. and at an acidity within a range of from about 2 to about 11N and which is subjected to subatmospheric pressure sufficient for evaporating water. A mixture of chlorine dioxide and water vapor is withdrawn from an evaporation zone in the reaction vessel, and alkali metal sulfate is precipitated in a crystallization zone in the reaction vessel. Straight chained alcohols with the formula CH.sub.2 OH(CHOH).sub.n CH.sub.2 OH where n=0-5, are used as reducing agents. Preferred reducing agents consist of glycol or glycerol. The reaction may also be performed in the presence of a catalyst.

Abstract: A process for the production of chlorine dioxide by reacting in a reaction vessel an alkali metal chlorate, mineral acid and a reducing agent in such proportions that chlorine dioxide is produced in a reaction medium which is maintained at a temperature of from about 50.degree. C. to about 100.degree. C. and at an acidity within a range of from about 5N to about 11N. The reaction medium is subjected to subatmospheric pressure sufficient for evaporating water, a mixture of chlorine dioxide, oxgen and water vapour being withdrawn from an evaporation zone in the reaction vessel, and alkali metal sulfate being precipitated in a crystallization zone in the reaction vessel. As the reducing agent hydrogen peroxide is used.

Abstract: A process for the production of chlorine dioxide by reacting in a reaction vessel an alkali metal chlorate, mineral acid and a reducing agent in such proportions that chlorine dioxide is produced in a reaction medium which is maintained at a temperature of from about 50.degree. C. to about 100.degree. C. and at an acidity within a range of from about 2 to about 5N. The reaction medium is subjected to subatmospheric pressure sufficient for evaporating water, a mixture of chlorine dioxide, oxygen and water vapor being withdrawn from an evaporation zone in the reaction vessel, and alkali metal sulfate being precipitated in a crystallization zone in the reaction vessel. As the reducing agent hydrogen peroxide is used.

Abstract: A process for producing chlorine dioxide by reacting in a reaction vessel an alkali metal chlorate, mineral acid and a reducing agent in such proportions that chlorine dioxide is produced in a reaction medium maintained at a temperature of from about 50.degree. C. to about 100.degree. C. and at an acidity within a range of from about 2 to about 11 N. The reaction medium is subjected to subatmospheric pressure sufficient for evaporating water, a mixture of chlorine dioxide and water vapor being withdrawn from an evaporation zone in the reaction vessel and alkali metal sulfate being precipitated in a crystallization zone in the reaction vessel. A mixture of formaldehyde and methanol is used as reducing agent.