US 6,439,298 B1 · Cylindrical heat radiator

Abstract

A cylindrical heat radiator comprises a cylindrical main body having a tightly sealing cavity, the cavity being filled with air; an inner surface of the cylindrical main body being formed with two penetrating channels. The penetrating channels of the cylindrical main body are located with fin sets. The cylindrical main body is formed by an inner tube, an outer tube and sealing rings at two ends. The inner tube and outer tube are arranged non-coaxially. A wick structure is installed in the cavity. By a degassing process, a heat-pipe type heat transferring structure is formed in the cylindrical main body, or by a non-degassing step, a boiling type heat transferring structure is formed. A heat dissipating body being in contact with the cylindrical main body. Fluid in the cylindrical main body is heated to boil and vaporized so that the fluid in the cylindrical main body will flow circularly.

Claims11

Dependent claims

A cylindrical heat radiator comprising:

a cylindrical main body having a tightly sealed cavity defined therein, said cylindrical body being formed by an outer tube having an axially directed first through bore and an inner tube asymmetrically disposed in said first through bore to define said cavity therebetween, said cavity having an eccentric annular cross-sectional contour and being filled with a predetermined quantity of a working fluid, said inner tube having an axially directed second through bore extending therein;
and
a heat dissipating body disposed in said second through bore and being in thermal contact with said inner tube for forming a larger heat dissipating surface;
wherein heat coupled to said outer tube is transferred to said heat dissipating body by heating said working fluid in said cavity to boil and vaporize so that said vapor and a condensate flow circularly in a single predetermined direction.

1 more element

Dependencies are inferred from the claim text.

Cylindrical heat radiator

Life of this patent

Cylindrical heat radiator

Life of this patent

Abstract

Claims11