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:
Feb. 13, 2001
Filed:
Feb. 18, 2000
Daikin Industries, Ltd., Osaka, JP;
Abstract
A heat exchanger (,) on the secondary heat source, which exchanges heat with a heat exchanger (,) on the primary heat source in a primary cooling circuit (A), is connected with an indoor heat exchanger (,) through a gas pipe (,) and a liquid pipe (,). A tank (T) storing a liquid cooling medium is connected at its lower end to the liquid pipe (,) and its upper end to a pressure adjustment mechanism (,). Check valves (CV,and CV,) are disposed on both sides of the connecting point of the tank (T) with respect to the liquid pipe (,). The internal pressure of the tank (T) is changed over alternately between a high pressure state and a low pressure state by the pressure adjustment mechanism (,) so that the liquid cooling medium is supplied to the indoor heat exchanger (,) at the time of the high pressure operation, and the liquid cooling medium is recovered from the heat exchanger (,) on the secondary side to the tank (T) and is circulated by a secondary cooling circuit (B) at the time of the low pressure operation.