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:
Jun. 23, 1998
Filed:
Dec. 13, 1994
Masayuki Kurematsu, Hino, JP;
Satoshi Yuzawa, Hino, JP;
Shoichi Kuroda, Chiba, JP;
Souichiro Shibata, Tokyo, JP;
Noriyuki Shimamura, Chiba, JP;
Toshiaki Kawada, Oizumi-machi, JP;
Yuio Yoshiokaya, Ashikaga, JP;
Konica Corporation, , JP;
The Tokyo Electric Power Company, Incorporated, , JP;
Sanyo Electric Co., Ltd., , JP;
Abstract
When waste liquid is concentrated using a radiant heat section and a heat absorbent section of a heat pump circuit, in the proper place of the heating region of the heat pump circuit, a detector for detecting the pressure and/or temperature of the heat transfer medium is provided, or a detector for detecting the value of an electric current flowing through or the amount of electric power consumed in a system which includes a compressor for the heat pump circuit, is provided, and by the provision of a control system which can halt the concentration operation when the detected value exceeds a set value, both with a liquid in which the concentration of the non-volatile component is low so that a comparatively long time is required for the concentration operation, and, conversely, with a liquid in which the concentration of the non-volatile component is high so that the concentration operation is completed in a comparatively short time, the concentration operation has good efficiency, and can always be halted at a uniform liquor concentration.