US 4,819,718 AGranted

Heat exchanging unit with a hydrogen adsorption alloy

AssigneeAgency of Industrial Science & Technology and Kurimoto Ltd.

InventorsHiroshi Ishikawa, Keisuke Oguro, Hiroshi Suzuki, Akihiko Kato, Teruya Okada, Shizuo Sakamoto, Iwao Nishimura, Keizo Sakaguichi

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Abstract

This invention relates to a novel heat exchanging unit with a hydrogen adsorption alloy of which thermal conductivity is kept high over a long period of use. Particularly in order to solve problems occurring at the time of forming a heat exchanging unit, by forming a compact of a hydrogen adsorption alloy and inserting a heat transfer element in the compact, such as insufficient heat transfer due to a small spacing produced between the compact and the heat transfer element, surface irregularities, decline in function due to micronization and scattering of the compact, difficulty in built-up, etc., there is disclosed a heat exchanging unit comprising a heat transfer element and a hydrogen adsorption alloy fitted to an inner periphery of the heat transfer element and solidly molded.

Claims14

Dependent claims

The combination comprising:

a heat exchanging unit including:
an elongated heat transfer element defining an inner surface;
and a quantity of fine particles of hydrogen adsorption alloy coextensive with the inner surface of the heat transfer element for at least a part of its length in a condition such that the fine particles of hydrogen adsorption alloy are bonded to each other to form in close-packed compact, said compact being bonded to the inner surface of the heat transfer element with which it is coextensive;
two spaced apart elastic cap members;
and
a hollow cylindrical elastic core mold, wherein:
said core mold defines an outer surface the diameter of which is less than the diameter of the inner surface of the heat transfer element;
each of said elastic cap members has an inner surface and an outer surface which surfaces engage a portion of the outer surface of the core mold and a portion of the inner surface of the heat transfer element, respectively;
and
said heat transfer element, core mold and cap members for a sealed unit due to the elasticity of the core mold and cap members when a pressure is applied to said combination, so that an even pressure is applied by the cap members, the inner surface of the heat transfer element and the outer surface of the core mold to the fine particles of hydrogen adsorption alloy for the integral formation of the heat exchanging unit.

7 more elements

Dependencies are inferred from the claim text.