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US 8,573,381 B1Granted
Permanent magnet air heater
AssigneePowerMag, LLC
InventorsDavid Albertson, Robert V. Albertson
Life of this patent
Estimating the term…
Abstract
A permanent magnet air heater has a housing with an internal chamber accommodating an electric motor rotating a fan to move air through the housing. A non-ferrous member having bores for cylindrical magnets and a steel member with a copper plate secured to the steel member are rotated relative to each other by the motor whereby the magnetic field between the magnets and copper plate generates heat which is transferred to air in the housing moving through the housing by the fan.
Claims20
A heater comprising:
- a plurality of permanent magnets mounted on a non-ferrous member, wherein each magnet is adjacent to a magnet of opposite polarity;
- a rotor including an absorber plate and a ferrous member configured to rotate within a heating housing;
- a motor operable to rotate a drive that rotates the rotor within the heating housing proximate to the non-ferrous member, including the plurality of permanent magnets, to generate a magnetic field, thereby generating heat that heats a fluid within the heating housing;
- and
- a pump operable to pump heated fluid out of the heating housing.
2 more elements
A heater comprising:
- an absorber plate proximate to a ferrous member;
- a plurality of permanent magnets mounted on a non-ferrous member that is adjacent to the absorber plate;
- a drive operable by a motor to rotate the non-ferrous member, including the plurality of permanent magnets, relative to the ferrous member to generate a magnetic field, thereby generating heat;
- and
- a pump operable to pump heated fluid away from the absorber plate.
2 more elements
A method for generating heat comprising:
- connecting a non-ferrous member, including a plurality of permanent magnets, to a drive connected to a motor;
- rotating the non-ferrous member, including the plurality of permanent magnets, relative to a ferrous member proximate to the absorber plate by operating the motor;
- generating a magnetic field between the permanent magnets and the ferrous member;
- and
- generating heat in an absorber plate adjacent to the non-ferrous member by inducing eddy currents in a space between the absorber plate and the non-ferrous member.
2 more elements
Dependencies are inferred from the claim text.