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:
Mar. 20, 2001
Filed:
Jul. 12, 1999
Paloma Industries, Limited, Tokyo, JP;
Abstract
Dual pipe unit,is erected vertically and comprises cold water pipe,serving as a passageway of cold water and surrounded by coaxial outer pipe,The cold water pipe consists of evaporating pipe portion,sealed at the bottom and inner pipe portion,coaxially provided in its interior. The bottom of the inner pipe portion is open near the bottom of the evaporating pipe portion whereas its top penetrating the top of the evaporating pipe portion to project into the latter is fixed thereto in a liquid-tight manner. The cold water pipe penetrates the top of the outer pipe but it is fixed to the latter in a liquid-tight manner, with its bottom end being spaced from the bottom end of the outer pipe by a specified distance. Evaporating/absorbing compartment,is formed between the evaporating pipe and the outer pipe. The channel of cold water through the evaporating pipe portion is narrowed and the cold water collects toward its wall surface, flowing at an increased relative velocity. This contributes to enhance the efficiency of cooling the cold water.