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:
Oct. 15, 1996
Filed:
Mar. 21, 1995
Toshiyuki Hino, Chohu, JP;
Kajima Corporation, Tokyo, JP;
Abstract
A cooling tank 1 for cooling water 2b by bringing water 2b in direct contact with hardly-water-soluble refrigerant 2c having a larger specific gravity than that of water, which tank 1 has an inside space 3 above water surface in the tank 1 and the pressure P.sub.t of the space 3 is kept below the saturation pressure P.sub.0 of the refrigerant 2c at water freezing point (P.sub.t .ltoreq.P.sub.0). The tank 1 also has a refrigerant extraction hole 6a for extracting gas-phase refrigerant 2c, an outlet 14a for drawing cooled water 2b, and an upward passage 30 for refrigerant extending from the bottom of the tank 1 to the water surface therein, which passage 30 guides ascension of that refrigerant 2c which settles at the tank bottom toward the space 3 above the water surface.