The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 2004
Filed:
Feb. 21, 2002
Satoshi Hirano, Tsukuba, JP;
Agency of Industrial Science and Technology, Tokyo, JP;
Abstract
A heat storage device comprises a heat storage tank charged with a heat storage material for storing the heat supplied from the outside, and a heat exchanger for executing an injection and an extraction of heat between the inside of the storage tank and the outside by the heat exchange between the heat storage material and a heat transfer medium. The heat exchanger is disposed so as to execute a heat exchange between the central portion in the heat storage tank and the outside, and suppresses the natural convection of the heat storage material of the outer portion by, for example, dispersing a liquid-absorbent material in the outer portion surrounding the central portion in the heat storage tank , whereby reduces the influence of external environment on the central portion in the heat storage tank, thereby suppressing the heat loss toward the outside.