A laundry appliance includes a blower that selectively delivers process air through an airflow path. A rotating drum defines a portion of the airflow path. The rotating drum is attached to a drive shaft that rotates the rotating drum about a rotational axis. The blower and the drive shaft are operated by a common motor. A heater selectively delivers heat to the airflow path. The heater defines an energizing state when a motor current delivered to the common motor is within a predetermined motor current range that is indicative of the common motor operating. The heater defines an idle state when the motor current is outside of the predetermined motor current range.

A PTC thermistor switch for electric motors includes an insulating casing and a PTC thermistor housed in a housing seat made in the insulating casing. The PTC thermistor has a first face and a second face opposite the first face. A first electric terminal is housed in the insulating casing and has two protrusions in direct contact with the first face of the PTC thermistor in two opposite contact points with respect to the center of the first face. The switch also includes a second electric terminal housed in the insulating casing and an elastic arm portion in direct contact with the second face of the PTC thermistor in an intermediate contact point between the contact points of the protrusions. The second electric terminal is arranged so that the elastic arm portion presses against the second face of the PTC thermistor.

An electric motor and a compressor having an electric motor are disclosed herein. The electric motor may include a stator having a stator core and a stator coil, and a rotor provided with a rotational shaft and rotatably disposed with respect to the stator. The stator coil may include a main winding and an auxiliary winding connected to each other with a phase difference. The main winding may be divided into a plurality of main windings so as to be connected to each other and disconnected from each other, and the stator coil may further include a winding changeover switch configured to provide connection and disconnection between the plurality of main windings. Such a configuration may allow operating efficiency at a low load to be increased.

An electric motor and a compressor having an electric motor are disclosed herein. The electric motor may include a stator having a stator core and a stator coil, and a rotor provided with a rotational shaft and rotatably disposed with respect to the stator. The stator coil may include a main winding and an auxiliary winding connected to each other with a phase difference. The main winding may be divided into a plurality of main windings so as to be connected to each other and disconnected from each other, and the stator coil may further include a winding changeover switch configured to provide connection and disconnection between the plurality of main windings. Such a configuration may allow operating efficiency at a low load to be increased.

This electric hoisting machine comprises: a motor driven by single-phase current; a cylindrical motor housing; a starting capacitor; a operating capacitor; a starting capacitor disconnecting switch; a control unit which controls the operation of the motor and which is covered by a control housing; and a housing case in which small-diameter cylindrical portions for accommodating the starting capacitor, a large-diameter cylindrical portion for accommodating the operating capacitor, and a large-diameter cylindrical portion for accommodating the starting capacitor disconnecting switch are integrally provided in a state of continuing in a horizontal row, the housing case being mounted on the outer periphery of the motor housing in such a manner that the cylindrical portions are oriented parallel to a rotation axis.

This electric hoisting machine comprises: a motor driven by single-phase current; a cylindrical motor housing; a starting capacitor; a operating capacitor; a starting capacitor disconnecting switch; a control unit which controls the operation of the motor and which is covered by a control housing; and a housing case in which small-diameter cylindrical portions for accommodating the starting capacitor, a large-diameter cylindrical portion for accommodating the operating capacitor, and a large-diameter cylindrical portion for accommodating the starting capacitor disconnecting switch are integrally provided in a state of continuing in a horizontal row, the housing case being mounted on the outer periphery of the motor housing in such a manner that the cylindrical portions are oriented parallel to a rotation axis.

A permanent split capacitor (PSC) motor includes a stator defining an axis of rotation and a rotor disposed adjacent the stator. The stator includes a start winding, a capacitor electrically coupled in series with the start winding, a first plurality of windings, and a second plurality of windings. The motor includes first and second sets of electrical leads connected respectively to the first plurality of windings and to the second plurality of windings, the first plurality of windings and the second plurality of windings respectively configurated to rotate the motor respectively at a first and second rotational speeds of the motor when mounted respectively to the first machine and to the second machine.

A permanent split capacitor (PSC) motor includes a stator defining an axis of rotation and a rotor disposed adjacent the stator. The stator includes a start winding, a capacitor electrically coupled in series with the start winding, a first plurality of windings, and a second plurality of windings. The motor includes first and second sets of electrical leads connected respectively to the first plurality of windings and to the second plurality of windings, the first plurality of windings and the second plurality of windings respectively configurated to rotate the motor respectively at a first and second rotational speeds of the motor when mounted respectively to the first machine and to the second machine.

A PTC thermistor switch for electric motors includes an insulating casing and a PTC thermistor housed in a housing seat made in the insulating casing. The PTC thermistor has a first face and a second face opposite the first face. A first electric terminal is housed in the insulating casing and has two protrusions in direct contact with the first face of the PTC thermistor in two opposite contact points with respect to the center of the first face. The switch also includes a second electric terminal housed in the insulating casing and an elastic arm portion in direct contact with the second face of the PTC thermistor in an intermediate contact point between the contact points of the protrusions. The second electric terminal is arranged so that the elastic arm portion presses against the second face of the PTC thermistor.

A laundry appliance includes a blower that selectively delivers process air through an airflow path. A rotating drum defines a portion of the airflow path. The rotating drum is attached to a drive shaft that rotates the rotating drum about a rotational axis. The blower and the drive shaft are operated by a common motor. A heater selectively delivers heat to the airflow path. The heater defines an energizing state when a motor current delivered to the common motor is within a predetermined motor current range that is indicative of the common motor operating. The heater defines an idle state when the motor current is outside of the predetermined motor current range.