Heat transfer device and method of making same
First Claim
Patent Images
1. A capillary structure for a heat transfer device comprising:
- a plurality of particles comprising a first species of particle and a second species of particle, said plurality of particles being joined together by a brazing compound such that fillets of said brazing compound are formed between adjacent ones of said plurality of particles so as to form a network of capillary passageways between said particles;
wherein said first species of particle and said second species of particle are each disposed within said capillary structure in homogenous layers.
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Abstract
A capillary structure for a heat transfer device, such as a heat pipe is provided having a plurality of particles including a first species having a first diameter and a second species having a second diameter that are joined together to form a capillary structure having homogenous layers of particles.
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Citations
42 Claims
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1. A capillary structure for a heat transfer device comprising:
a plurality of particles comprising a first species of particle and a second species of particle, said plurality of particles being joined together by a brazing compound such that fillets of said brazing compound are formed between adjacent ones of said plurality of particles so as to form a network of capillary passageways between said particles;
wherein said first species of particle and said second species of particle are each disposed within said capillary structure in homogenous layers.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A wick for a heat pipe comprising:
a plurality of particles comprising a first diameter and a second diameter, said plurality of particles being joined together so as to form a network of capillary passageways between said particles;
wherein said first diameter particles are disposed within a first substantially homogenous layer and said second diameter particles are disposed within a second substantially homogenous layer.- View Dependent Claims (20)
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21. A heat pipe comprising:
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a sealed enclosure having an interior surface;
a working fluid disposed within said enclosure; and
a wicking structure disposed upon said interior surface and comprising a plurality of particles including a first species of particle and a second species of particle, said plurality of particles being joined together so as to form a network of capillary passageways between said particles;
wherein said first species of particle and said second species of particle are each disposed within said wicking structure in substantially homogenous layers.
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22. A capillary structure for a heat transfer device comprising:
a plurality of particles comprising a first species of particle having a first size and a second species of particle having a second size, said plurality of particles being joined together by a brazing compound such that fillets of said brazing compound are formed between adjacent ones of said plurality of particles so as to form a network of capillary passageways between said particles;
wherein said first species of particle and said second species of particle are each disposed within said capillary structure in substantially homogenous layers, wherein a plurality of vapor vents are defined through said capillary structure.- View Dependent Claims (23)
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24. A capillary structure for a heat transfer device comprising:
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a plurality of particles comprising a first species of particle having a first average particle diameter and a second species of particle having a second average particle diameter wherein said plurality of particles are joined together so as to form a network of capillary passageways between said particles, and further wherein said first species of particle and said second species of particle are each disposed within said capillary structure in substantially homogeneous layers; and
a plurality of blind bores are defined through said capillary structure such that each blind bore has a closed end comprising a particle layer that comprises at least one dimension that is no more than about six average particle diameters of at least one of said first species and said second species of particle.
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25. A capillary structure for a heat transfer device comprising:
a plurality of particles comprising a first species of particle having a first diameter, and a second species of particle having a second diameter wherein said plurality of particles are joined together in substantially homogenous layers so as to form a network of capillary passageways between said particles, wherein a plurality of blind bores are defined through said homogenous layers of particles such that each blind bore has a closed end comprising a vent-wick layer that comprises at least one dimension that is no more than about six average particle diameters of at least one of said first species and said second species of particle.
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26. A heat pipe comprising:
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a hermetically sealed and partially evacuated enclosure, said enclosure comprising internal surfaces;
a wick disposed on at least one of said internal surfaces and comprising a plurality of particles comprising a first species of particle having a first size and a second species of particle having a second size, said plurality of particles being joined together so as to form a network of capillary passageways between said particles;
wherein said first species of particle and said second species of particle are each disposed within said wick in substantially homogenous layers; and
a two-phase fluid at least partially disposed within a portion of said wick. - View Dependent Claims (27, 28)
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29. A heat pipe comprising:
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a hermetically sealed and partially evacuated enclosure, said enclosure comprising internal surfaces;
a wick disposed on at least one of said internal surfaces and comprising a plurality of particles comprising a first species of particle having a first diameter and a second species of particle having a second diameter, said plurality of particles being joined together so as to form a network of capillary passageways between said particles;
wherein said first species of particle and said second species of particle are each disposed within said wick in substantially homogenous layers and further wherein a plurality of blind bores are defined through said capillary structure such that each blind bore has a closed end comprising a vent-wick layer that comprises at least one dimension that is no more than about six average particle diameters of at least one of said first species and said second species of particle; and
a two-phase fluid at least partially disposed within a portion of said wick. - View Dependent Claims (30, 31, 32, 33)
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34. A heat pipe comprising:
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a hermetically sealed and partially evacuated enclosure, said enclosure comprising internal surfaces;
a wick disposed on at least one of said internal surfaces and comprising a plurality of particles comprising a first species of particle having a first size and a second species of particle having a second size, said plurality of particles being joined together so as to form a network of capillary passageways between said particles;
wherein said first species of particle and said second species of particle are each disposed within said wick in graded homogenous layers, and further wherein at least one vapor vent is defined through said wick; and
a two-phase fluid at least partially disposed within a portion of said wick.
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35. A heat pipe comprising a sealed and partially evacuated tubular enclosure having an internal surface covered by a brazed wick comprising a plurality of copper particles comprising a first species of particle having a first diameter and a second species of particle having a second diameter, and joined together by a brazing compound comprising about sixty-five percent weight copper and thirty-five percent weight gold such that fillets of said brazing compound are formed between adjacent ones of said plurality of particles so as to form a network of capillary passageways between said particles wherein said first species of particle and said second species of particle are each disposed within said wick in substantially homogenous layers;
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a working fluid disposed within said tubular enclosure. - View Dependent Claims (36, 37)
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38. A heat pipe comprising a sealed and partially evacuated tubular enclosure having an internal surface covered by a brazed wick comprising a plurality of copper particles comprising a first species of particle having a first diameter and a second species of particle having a second diameter, and joined together by a brazing compound comprising about sixty-five percent weight copper and thirty-five percent weight gold such that fillets of said brazing compound are formed between adjacent ones of said plurality of particles so as to form a network of capillary passageways between said particles wherein said first species of particle and said second species of particle are each disposed within said wick in a plurality of substantially homogenous layers, and including a plurality of vapor vents defined through said wick;
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a working fluid disposed within said tubular enclosure.
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39. A heat pipe comprising:
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a sealed and partially evacuated enclosure having an internal surface;
a wick disposed upon said internal surface comprising a plurality of sintered particles comprising a first species of particle, a second species of particle, and a third species of particle, wherein said first species of particle, said second species of particle, and said third species of particle are each disposed within said wick in substantially homogenous layers; and
a working fluid disposed within said enclosure.
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40. A heat pipe comprising:
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a sealed and partially evacuated enclosure having an internal surface;
a wick disposed upon said internal surface comprising a plurality of sintered particles comprising a first species of particle, a second species of particle, and a third species of particle, wherein said first species of particle, said second species of particle, and said third species of particle are each disposed within said wick in substantially homogenous layers, and further including at least one vapor vent that is defined through a portion of said wick; and
a working fluid disposed within said enclosure.
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41. A heat pipe comprising:
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a sealed and partially evacuated tubular enclosure being sealed at a first end and having an internal surface covered by a brazed wick comprising a plurality of particles comprising a first species of particle and a second species of particle, said first species and said second species of particle being joined together by a brazing compound such that fillets of said brazing compound are formed between adjacent ones of said particles so as to form a network of capillary passageways between said particles;
a base sealingly fixed to a second end of said enclosure so as to form an internal surface within said enclosure wherein said wick is formed on said base including said first species of particles and said second species of particles each disposed within said wick in substantially homogenous layers;
a working fluid disposed within said enclosure; and
at least one fin projecting radially outwardly from an outer surface of said tubular enclosure.
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42. A heat pipe comprising:
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a sealed and partially evacuated tubular enclosure being sealed at a first end and having an internal surface covered by a brazed wick comprising a plurality of particles comprising a first species of particle and a second species of particle, said first species and said second species of particle being joined together so as to form a network of capillary passageways between said particles;
a base sealingly fixed to a second end of said enclosure so as to form an internal surface within said enclosure wherein said wick is formed on said base including said first species of particles and said second species of particles each disposed within said wick in substantially homogenous layers, and further including at least one vapor vent that is defined through a portion of said wick;
a working fluid disposed within said enclosure; and
at least one fin projecting radially outwardly from an outer surface of said tubular enclosure.
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Specification