Heat pipe
AssigneeFujikura Ltd.
InventorsMohammad Shahed Ahamed, Harutoshi Hagino, Akihiro Takamiya, Yoji Kawahara, Tsuyoshi Ogawa
Life of this patent
Estimating the term…
Abstract
A heat pipe includes a flat container having an internal space in which a working fluid is sealed and a flat surface facing the internal space, and a wick disposed in the internal space. The wick includes a first wick having a plurality of first voids and a second wick having a plurality of second voids. The first wick rises from the flat surface and is fixed to the flat surface. The second wick is formed of a sintered body of powders and covers a surface of the first wick. Each of the plurality of second voids is smaller on average than each of the plurality of first voids.
Claims5
A heat pipe comprising:
- a flat container having an internal space in which a working fluid is sealed and a flat surface facing the internal space, and
- a wick disposed in the internal space,
- wherein
- the wick includes a first wick having first voids and a second wick having second voids,
- the first wick rises from the flat surface and is fixed to the flat surface,
- the second wick is formed of a sintered body of powders and covers a surface of the first wick,
- each of the second voids is smaller on average than any of the first voids,
- the second wick does not cover the surface of the first wick in a condensation section in which the working fluid condenses,
- the second wick has:
- a first end in a width direction;
- and
- a second end opposite the first end in the width direction,
- the first end and the second end are in contact with the flat surface, and
- a portion of an inner circumferential surface of the flat container that is not in contact with any one of the first wick, the first end, and the second end is exposed to the internal space.
Dependencies are inferred from the claim text.