Magnetic refrigerator
First Claim
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1. A magnetic refrigerator comprising:
- a magnetic field generator adapted to normally generate a magnetic field;
at least one working substance which generates heat when it is within the magnetic field and absorbs the heat, when it is outside the magnetic field, to cause a gas to be condensed;
drive means for relatively moving the working substance and magnetic field generator to permit the working substance to alternately enter and leave the magnetic field; and
a heat elimination system adapted to permit the generated heat to be dissipated into the outside from the working substance, when the working substance enters the magnetic field,the improvement in whichsaid working substance has a pair of opposite, flat surfaces and a grooved, outer peripheral surface where the gas is deposited to permit condensation, andsaid heat elimination system includes a heat conductor which, when the working substance enters the magnetic field, contacts both the flat surfaces of the working substance to permit the generated heat to be taken from the working substance and, when it is outside the magnetic field, is not in contact with the flat surfaces of the working substance.
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Accused Products
Abstract
A magnetic refrigerator includes a plurality of working substances each of which, when it is within a magnetic field, generates heat and, when it is outside the magnetic field, absorbs the heat to permit a gas to be condensed on the outer surface of the working substance. The working substance has even surfaces and an uneven surface formed on said outer surface thereof. A heat elimination system which, only when the working substance is within the magnetic field, contacts the even surfaces of the working substance to take the heat from the working substance, is provided.
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Citations
12 Claims
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1. A magnetic refrigerator comprising:
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a magnetic field generator adapted to normally generate a magnetic field; at least one working substance which generates heat when it is within the magnetic field and absorbs the heat, when it is outside the magnetic field, to cause a gas to be condensed; drive means for relatively moving the working substance and magnetic field generator to permit the working substance to alternately enter and leave the magnetic field; and a heat elimination system adapted to permit the generated heat to be dissipated into the outside from the working substance, when the working substance enters the magnetic field, the improvement in which said working substance has a pair of opposite, flat surfaces and a grooved, outer peripheral surface where the gas is deposited to permit condensation, and said heat elimination system includes a heat conductor which, when the working substance enters the magnetic field, contacts both the flat surfaces of the working substance to permit the generated heat to be taken from the working substance and, when it is outside the magnetic field, is not in contact with the flat surfaces of the working substance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A magnetic refrigerator comprising:
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a container having an opening at its upper wall and holding a liquid to be cooled; a magnetic field generator fixed at the upper side of the container and adapted to normally generate a magnetic field; an auxiliary container disposed above said container and communicating with said container through said opening; a working substance movable in a horizontal plane within the auxiliary container and adapted to generate heat when it is within the magnetic field and absorb the heat, when it is outside the magnetic field, to permit a gas to be condensed on the outer surface thereof, said working substance having even and uneven surfaces on which a gas is condensed; drive means for moving the working substance to permit it to alternately enter and leave the magnetic field; and a heat elimination system which, when the working substance is within the magnetic field, permits the heat which is generated in the working substance to be dissipated toward the outside of the auxiliary container, said heat elimination system including a heat conductor which, when said working substance is within the magnetic field, contacts the even surface of the working substance to take the heat from the working substance and, when said working substance is outside the magnetic field, does not contact them.
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12. A magnetic refrigerator including a working substance of a type which generates heat when positioned within a magnetic field and absorbs heat when positioned outside said magnetic field to permit a gas to be condensed on the outer surface of the working substance, the exterior of said working substance comprising even and uneven surfaces, and a heat elimination system having means for facing the even surface of the working substance to take the heat from the working substance only when said working substance is in said magnetic field.
Specification