An electrical machine includes a fan guard having a first air flow channel. A stator assembly is coupled to the fan guard and includes a stator yoke having a cylindrical outer surface and a stator pole shoe. The stator pole shoe includes a plurality of stator poles coupled to the stator yoke. The stator assembly includes a second air flow channel defined between the stator yoke and an adjacent pair of the stator poles. A rotor assembly is positioned inside the stator assembly. The rotor assembly includes a rotatable shaft and a rotor. The rotatable shaft defines a rotation axis. A control electronics board includes a plurality of heat making components and is enclosed in a housing having a vented base and a closure. The housing is coupled to the stator assembly opposite the fan guard. The vented base includes a plurality of vent openings opened toward the fan guard.

A stamped resistive element for use in electrical equipment, manufacturing process of stamped resistive element and apparatus equipped with stamped resistive element are provided. The stamped resistive element is produced from a stamping process and is intended to be used in replacement of conventional helical electrical resistances, whether in hair dryers and similar equipment or in other types of heating equipment. The stamped resistive element is produced as a blank from a metal sheet presenting a known resistive coefficient.

The invention is directed to a heating fan (100) with an inner space (110) in which is arranged an air channel (810) which is partially made of plastic. An electric heating body (300) is arranged behind a fan (800) in an air flow direction (821). According to the invention, this fan is constructed such that a fan wheel (801) of a radial fan, which fan wheel (801) is contained in the fan (800), has two suction sides (805, 806) which are separated by a dividing wall (804). During operation, a first air flow (822) is sucked in from outside (1) through the first suction side (805) which is open to a first air inlet opening (221). The second suction side (806) is arranged in a fan space (111) of the heating fan (100) and is pneumatically connected to second air inlet openings (222). The fan is arranged in front of a ceramic heating element (301) of the electric heating body (300) so that the first air flow (822) and the second air flow (823) stream through the heating body (300).

An attachment for a handheld appliance, the attachment having a first end for connection to the appliance and a second end, a first wall extending from the first end towards the second end and defining a fluid flow path through the attachment, a second wall extending from the second end towards the first end about the first wall and defining a second fluid flow path extending between the first wall and the second wall. The first end of the appliance may be substantially circular. The fluid flow path may have a fluid inlet that may be annular at the first end. The fluid inlet may be defined by the first wall and an inner wall extending around and at least partially along the first wall. The inner wall may be substantially equidistant from the first wall around the fluid inlet. A hair care appliance comprises such as attachment.

A radiant panel (1) intended to be installed inside a vehicle (80) passenger compartment (3), in particular a motor vehicle passenger compartment, the radiant panel (1) comprising at least one array of electrodes with at least two primary electrodes of different polarities, the array of electrodes being arranged such that at least two primary electrodes of different polarities each define at least one spiral winding around one another.

An electric power converter device may include first and second housings separated by a fluid-impermeable plate, at least one power electronics unit electrically connected to an electric power input and output, at least one fluid chamber fluidically connected to a fluid inlet and outlet, and at least one heater electrically connected to the electric power input and output, the fluid chamber and heater thermally coupled such that waste heat generated by the power electronics unit may be used to heat a fluid flowing through the fluid chamber. The electric power converter device may have first and second operation modes, the waste heat being increased in the second operation mode. The first housing and the plate may form a first space area in which the power electronics unit and the heater may be arranged, and the plate and the second chamber form the fluid chamber with a second space area. The power electronics unit may form a DC-to-DC converter which converts a high voltage of 400 V to a low voltage of 12 V, wherein a heating power in the range of 3 kW to 4 kW.

A venting apparatus for a heat source is disclosed. The venting apparatus includes a venting housing structure comprising a plurality of exhaust apertures proximate to a heat collector, wherein the exhaust apertures vent into a chamber defined, in part, by a circumferential surface having a radial extent from the apertures, and a thermoelectric device in thermal communication to the heat collector on a second surface thereof.

The invention relates to a hot-air fan including a fan device for generating an air flow, a heating device for heating the air flow, and a control unit connected to the fan device and to the heating device. In this process, the control unit is designed to control the fan device in such a manner that, when the heating device is switched on, the fan device generates a starting air flow that is reduced to an operating air flow. The invention also relates to a method for operating the hot-air fan, including the steps of switching on the heating device and generating a starting air flow that is reduced to an operating air flow.

A heating system with wraparound heat exchanger is disclosed. The system includes a centrifugal fan that expels air radially into a plenum space. A heat exchanger tube is placed in the plenum space, thereby heating the air in the plenum space before it exits an assembly cabinet. The heat exchanger tube can have various configurations, including non-horizontal configurations so as to allow condensate to drain from the heat exchanger tubes.

A heating system with wraparound heat exchanger is disclosed. The system includes a centrifugal fan that expels air radially into a plenum space. A heat exchanger tube is placed in the plenum space, thereby heating the air in the plenum space before it exits an assembly cabinet. The heat exchanger tube can have various configurations, including non-horizontal configurations so as to allow condensate to drain from the heat exchanger tubes.