A slip ring unit for an electric generator is provided. The slip ring unit includes a slip ring attachable to a rotor shaft of the electric generator, a plurality of sliding contacts arranged along a circumference of the slip ring, to provide an electrical connection with the slip ring, at least one temperature sensor for measuring a temperature inside the slip ring unit, a fan for providing a cooling flow in the slip ring unit, and a controller connected to the fan for controlling the cooling flow rate generated by the fan, the controller being connected to the at least one temperature sensor. The at least one temperature sensor is attached to at least a holder for supporting the sliding contacts. The controller is configured in such a way that the cooling flow rate is generated depending on the temperature measured by the at least one temperature sensor.

A slip ring unit for an electric generator is provided. The slip ring unit includes a slip ring attachable to a rotor shaft of the electric generator, a plurality of sliding contacts arranged along a circumference of the slip ring, to provide an electrical connection with the slip ring, at least one temperature sensor for measuring a temperature inside the slip ring unit, a fan for providing a cooling flow in the slip ring unit, and a controller connected to the fan for controlling the cooling flow rate generated by the fan, the controller being connected to the at least one temperature sensor. The at least one temperature sensor is attached to at least a holder for supporting the sliding contacts. The controller is configured in such a way that the cooling flow rate is generated depending on the temperature measured by the at least one temperature sensor.

A cover covering a rectifying device includes a cover end wall portion, a cover outer wall portion, and a cover intermediate portion interposed between the cover end wall portion and the cover outer wall portion. The cover end wall portion includes an inner peripheral side intake portion, and the cover intermediate portion includes an outer peripheral side intake portion. The outer peripheral side intake portion includes an axial direction covering portion existing in a position that is closer to a rotary electric machine main body than the cover end wall portion in an axial direction, and a radial direction covering portion that connects the axial direction covering portion to an outer peripheral portion of the cover end wall portion. Intake holes are provided respectively in the inner peripheral side intake portion, the axial direction covering portion, and the radial direction covering portion.

A cover covering a rectifying device includes a cover end wall portion, a cover outer wall portion, and a cover intermediate portion interposed between the cover end wall portion and the cover outer wall portion. The cover end wall portion includes an inner peripheral side intake portion, and the cover intermediate portion includes an outer peripheral side intake portion. The outer peripheral side intake portion includes an axial direction covering portion existing in a position that is closer to a rotary electric machine main body than the cover end wall portion in an axial direction, and a radial direction covering portion that connects the axial direction covering portion to an outer peripheral portion of the cover end wall portion. Intake holes are provided respectively in the inner peripheral side intake portion, the axial direction covering portion, and the radial direction covering portion.

The present invention concerns an air pulser (1) for a heating, ventilation and/or air conditioning device for a motor vehicle, according to which said air pulser (1) comprises: an electric motor (10) comprising a drive shaft (100) and brushes (101) on which a wheel (11) is mounted; said wheel (11) is capable of generating a main air flow (F1) in said heating, ventilation and/or air conditioning device; a motor support (12) in which said electric motor (10) is housed and comprising an air channel (8) in which a secondary air flow (F2) from said main air flow (F1) is capable of circulating (F1), said air channel (8) comprising a first part (129) and a second part (144), said second part (144) comprising a curved shape so as to direct said secondary air flow (F2) onto said brushes (101) of said electric motor (10).

The present invention concerns an air pulser (1) for a heating, ventilation and/or air conditioning device for a motor vehicle, according to which said air pulser (1) comprises: an electric motor (10) comprising a drive shaft (100) and brushes (101) on which a wheel (11) is mounted; said wheel (11) is capable of generating a main air flow (F1) in said heating, ventilation and/or air conditioning device; a motor support (12) in which said electric motor (10) is housed and comprising an air channel (8) in which a secondary air flow (F2) from said main air flow (F1) is capable of circulating (F1), said air channel (8) comprising a first part (129) and a second part (144), said second part (144) comprising a curved shape so as to direct said secondary air flow (F2) onto said brushes (101) of said electric motor (10).

A slip ring system for an electrical machine, comprising: slip rings, which are arranged so as to rotate about an axis of rotation, for transmitting current to the electrical machine; contact brushes which are in contact with the slip rings; an impeller which is mountable so as to surround the axis of rotation and in a rotationally fixed manner in relation to the slip rings, the impeller being adapted to generate an air flow in a plane perpendicular to the shaft; and a filter which surrounds the impeller such that an imaginary radial extension of the impeller meets the filter, and a porosity of the filter decreases in a radially outward direction between a radially inner edge of the filter and a radially outer edge of the filter; wherein a first thickness of the filter in a radial direction is at least 50% of a second thickness of the filter in an axial direction.

A slip ring system for an electrical machine, comprising: slip rings, which are arranged so as to rotate about an axis of rotation, for transmitting current to the electrical machine; contact brushes which are in contact with the slip rings; an impeller which is mountable so as to surround the axis of rotation and in a rotationally fixed manner in relation to the slip rings, the impeller being adapted to generate an air flow in a plane perpendicular to the shaft; and a filter which surrounds the impeller such that an imaginary radial extension of the impeller meets the filter, and a porosity of the filter decreases in a radially outward direction between a radially inner edge of the filter and a radially outer edge of the filter; wherein a first thickness of the filter in a radial direction is at least 50% of a second thickness of the filter in an axial direction.

A voltage regulator with brush holder assembly (100) for a rotary electric machine intended for an automotive vehicle, which assembly comprises: a brush holder comprising brushes that are capable of coming into electrical contact with a rotor of the rotary electric machine in order to apply an excitation signal thereto; a microcontroller for regulating said excitation signal; a body made of electrically insulating material, said body taking the overall shape of a T and in which said brush holder and said microcontroller are housed, characterized in that the voltage regulator with brush holder assembly (100) comprises two parts: a first part (200) forming a central portion of the T-shaped body and extending along a first axis (z1-z2), said first part (200) comprising a housing (201) for accommodating the brush holder and a second part (300) forming a lateral portion of the T-shaped body and extending along a second axis (y1-y2) perpendicular to said first axis (z1-z2), said integrated circuit being housed in said second part (300).

A voltage regulator with brush holder assembly (100) for a rotary electric machine intended for an automotive vehicle, which assembly comprises: a brush holder comprising brushes that are capable of coming into electrical contact with a rotor of the rotary electric machine in order to apply an excitation signal thereto; a microcontroller for regulating said excitation signal; a body made of electrically insulating material, said body taking the overall shape of a T and in which said brush holder and said microcontroller are housed, characterized in that the voltage regulator with brush holder assembly (100) comprises two parts: a first part (200) forming a central portion of the T-shaped body and extending along a first axis (z1-z2), said first part (200) comprising a housing (201) for accommodating the brush holder and a second part (300) forming a lateral portion of the T-shaped body and extending along a second axis (y1-y2) perpendicular to said first axis (z1-z2), said integrated circuit being housed in said second part (300).