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:
Apr. 08, 1997
Filed:
Sep. 19, 1995
Syuji Tomita, Toride, JP;
Ryouhei Minowa, Ushiku, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The invention provides an absorbing type water cooling-heating apparatus which employs an electrically-operated valve and an improved method of diluting a solution for automatically changing between heating operation and cooling operation only by operating a cooling-heating change-over switch. The apparatus comprises an evaporator for evaporating a cooling medium to cool cooling water, an absorber for causing a solution to absorb steam of the cooling medium evaporated in the evaporator to dilute the solution, a high-temperature regenerator and a low-temperature regenerator for concentrating the dilute solution, fed thereto from the absorber, by forming steam of the cooling medium, a condenser for condensing the steam of the cooling medium, produced in the low-temperature regenerator, into a liquid, a solution circulating pump for circulating the solution, a cooling medium spray pump for spraying the cooling medium, a cooling medium steam pipe connecting the interior of the high-temperature regenerator, in which the cooling medium steam is contained, to the interior of the evaporator in which the cooling medium is sprayed, a throttle device provided in the cooling medium steam pipe, an electrically-operated valve provided in the cooling medium steam pipe, and a cooling-heating change-over switch connected to the electrically-operated valve for switching the electrically-operated valve when changing the operation of the apparatus between a cooling mode and a heating mode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile