Interior magnet rotary machine

A rotary machine comprising:

• a rotor frame comprising a monolithic unitary body of magnetically permeable material having an elongate generally cylindrical shape with outer radial surface portions defining an imaginary circular cylindrical surface of said rotor frame, said rotor frame including a series of channels formed in the outer radial surface portions of said rotor frame and opening radially outwardly therefrom, each of said channels extending continuously along an entire length of said rotor frame and opening outwardly from each opposing end of said rotor frame;
• and
• at least one magnet positioned in each of said channels, each of said magnets having a predetermined shape so as not to protrude radially outwardly beyond the imaginary circular cylindrical surface defined by the outer radial surface portions of said rotor frame;
• and
• a stator assembly surrounding said rotor frame with said at least one magnet in said channels, to thereby form a rotary machine.

A rotor structure for a rotary machine comprising:

• a rotor frame comprising a monolithic unitary body of magnetically permeable material having an elongate generally cylindrical shape with outer radial surface portions defining an imaginary circular cylindrical surface of said rotor frame, said rotor frame including a series of generally U-shaped channels formed in the outer radial surface portions of said rotor frame and opening radially outwardly therefrom, each of said channels extending continuously along an entire length of said rotor frame and opening outwardly from each opposing end of said rotor frame;
• at least one generally U-shaped magnet positioned in each of said generally U-shaped channels so as not to protrude radially outwardly beyond the imaginary circular cylindrical surface defined by the outer radial surface portions of said rotor frame, each of said U-shaped magnets having an inner surface adjacent said channel magnetized at a first polarity and an outer surface opposite said inner surface magnetized at an opposite polarity;
• and
• a pole piece mounted on the outer surface of each of said U-shaped magnets, each of said pole pieces having an inner surface adjacent the outer surface of said U-shaped magnet and conforming thereto to form a high permeability magnetic circuit, each of said pole pieces having an outer surface opposite said inner surface being flush with the imaginary circular cylindrical surface defined by the outer radial surface portions of said rotor frame.

A rotor structure for a rotary machine comprising:

• a rotor frame comprising a monolithic unitary body of magnetically permeable material having an elongate generally cylindrical shape with outer radial surface portions defining an imaginary circular cylindrical surface of said rotor frame, said rotor frame including a series of channels formed in the outer radial surface portions of said rotor frame and opening radially outwardly therefrom, each of said channels extending continuously along an entire length of said rotor frame and opening outwardly from each opposing end of said rotor frame, each of said channels having a pair of opposing side surface portions and a medial surface portion located therebetween;
• a pair of bar magnets positioned in each channel, each one of said bar pair of magnets lying along a respective opposing side surface portion of said channel, each of said bar magnets having a first surface adjacent a respective side surface portion of said channel magnetized at a first polarity and a second surface opposite said first surface magnetized at an opposite polarity;
• and
• a generally triangular pole piece mounted between the second surfaces of the bar magnets in each pair thereof to form a high permeability magnetic circuit, an outer surface of each pole piece being flush with the imaginary circular cylindrical surface defined by the outer radial surface portions of said rotor frame.

A rotor structure for a rotary machine comprising:

• a rotor frame comprising a monolithic unitary body of magnetically permeable material having an elongate generally cylindrical shape with outer radial surface portions defining an imaginary circular cylindrical surface of said rotor frame, said rotor frame including a series of generally V-shaped channels formed in the outer radial surface portions of said rotor frame and opening radially outwardly therefrom, each of said channels extending continuously along an entire length of said rotor frame and opening outwardly from each opposing end of said rotor frame;
• and
• at least one generally V-shaped magnet positioned in each of said generally V-shaped channels, each of said V-shaped magnets having an inner surface adjacent said channel magnetized at a first polarity and an outer surface opposite said inner surface magnetized at an opposite polarity;
• and
• a pole piece mounted on the outer surface of each of said U-shaped magnets, each of said pole pieces having an inner surface adjacent the outer surface of said V-shaped magnet and conforming thereto to form a high permeability magnetic circuit, each of said pole pieces having an outer surface opposite said inner surface being flush with the imaginary circular cylindrical surface defined by the outer radial surface portions of said rotor frame.

A rotor structure for a rotary machine comprising:

• a rotor frame comprising a monolithic unitary body of magnetically permeable material and having an elongate generally cylindrical shape with outer radial surface portions defining an imaginary circular cylindrical surface of said rotor frame, said rotor frame including a series of channels formed in the outer radial surface portions of said rotor frame and opening radially outwardly therefrom, each of said channels extending continuously along the entire length of said rotor frame and opening outwardly from each opposing end of said rotor frame, each of said channels having a pair of opposing side surface portions and a medial surface portion located therebetween;
• and
• three magnets mounted in each channel, a first magnet lying on the medial surface portion of said channel and the second and third magnets lying on respective side surface portions of each channel, each of said magnets having an inner surface adjacent said channel magnetized at a first polarity and an outer surface opposite said inner surface magnetized at an opposite polarity;
• and
• a pole piece mounted on an outer surface of each of said magnets, each of said pole pieces having an inner surface adjacent the outer surface of said magnets and conforming thereto to form a high permeability magnetic circuit, each of said pole pieces having an outer surface opposite said inner surface being flush with the imaginary circular cylindrical surface defined by the outer radial surface portions of said rotor frame.