MAGNETIC COOLING APPARATUS AND CONTROL METHOD THEREOF
First Claim
1. A magnetic cooling apparatus comprising:
- a plurality of magnets forming a magnetic field;
a magnetic regeneration unit formed of a magnetocaloric material, provided with coils, and using an electromagnetic force, generated when currents are supplied to the coils in the magnetic field, as kinetic energy;
a hot water side flow path formed through the magnetic regeneration unit when the magnetic regeneration unit is magnetized inside of the magnetic field;
a cold water side flow path formed through the magnetic regeneration unit when the magnetic regeneration unit is demagnetized outside of the magnetic field; and
a controller controlling current supply to the coils of the magnetic regeneration unit so that the magnetic regeneration unit is magnetized while passing through the magnetic field and demagnetized while exiting the magnetic field, and thus controlling movement of the magnetic regeneration unit to achieve cooling by temperature lowering generated by demagnetization of the magnetic regeneration unit.
1 Assignment
0 Petitions
Accused Products
Abstract
A magnetic cooling apparatus and a control method thereof are provided. The magnetic cooling apparatus provides a replacement having a simplified structure for motors providing driving force and power transmission systems of reciprocation type and rotation type cooling apparatuses. The magnetic cooling apparatus includes magnets forming a magnetic field, magnetic regeneration units formed of a magnetocaloric material that are provided with coils, and using electromagnetic force, generated when currents are supplied to the coils in the magnetic field, as kinetic energy, and a controller controlling the currents supplied to the coils of the magnetic regeneration units to control moving speeds and directions of the magnetic regeneration units.
71 Citations
12 Claims
-
1. A magnetic cooling apparatus comprising:
-
a plurality of magnets forming a magnetic field; a magnetic regeneration unit formed of a magnetocaloric material, provided with coils, and using an electromagnetic force, generated when currents are supplied to the coils in the magnetic field, as kinetic energy; a hot water side flow path formed through the magnetic regeneration unit when the magnetic regeneration unit is magnetized inside of the magnetic field; a cold water side flow path formed through the magnetic regeneration unit when the magnetic regeneration unit is demagnetized outside of the magnetic field; and a controller controlling current supply to the coils of the magnetic regeneration unit so that the magnetic regeneration unit is magnetized while passing through the magnetic field and demagnetized while exiting the magnetic field, and thus controlling movement of the magnetic regeneration unit to achieve cooling by temperature lowering generated by demagnetization of the magnetic regeneration unit. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A control method of a magnetic cooling apparatus which has magnets forming a magnetic field, a magnetic regeneration unit formed of a magnetocaloric material, provided with coils, and using electromagnetic force, generated when currents are supplied to the coils in the magnetic field, as kinetic energy, a hot water side flow path formed through the magnetic regeneration unit when the magnetic regeneration unit is magnetized inside of the magnetic field, and a cold water side flow path formed through the magnetic regeneration unit when the magnetic regeneration unit is demagnetized outside of the magnetic field, the control method comprising:
-
controlling current supply to the coils of the magnetic regeneration unit so that the magnetic regeneration unit is magnetized while passing through the magnetic field; controlling current supply to the coils of the magnetic regeneration unit so that the magnetic regeneration unit is demagnetized while exiting the magnetic field; and controlling movement of the magnetic regeneration units to achieve cooling by temperature lowering generated by demagnetization of the magnetic regeneration unit. - View Dependent Claims (8, 9, 10, 11)
-
-
12. A control method of a cooling device, the method comprising:
-
controlling a current supply so that a magnetic regeneration unit is magnetized while passing through a magnetic field and demagnetized while exiting the magnetic field; and controlling a movement of the magnetic regeneration unit to achieve cooling by lowering a temperature generated by demagnetization of the magnetic regeneration unit.
-
Specification