METHOD AND DEVICE FOR JUDGING LEAKAGE OF ABSORPTION COLD AND HOT WATER MACHINE

摘要

PURPOSE: To easily determine a position of leakage by a method wherein concept such as operation time interval and calendar day elapsed time interval is created so that both of the intervals are compared with each other to judge whether leakage has occurred only during operation or whether leakage has occurred during shutdown. ;CONSTITUTION: A bleeding device 16 is actuated when the degree of vacuum in a vacuum closed system of an absorption cycle falls so that it is operated intermittently, wherein operation signals of the device are inputted into a bleeding operation analyzing circuit 3 through an automatic controller 1. Whereupon operation and shutdown of an absorption cold and hot water machine is judged to compute a total sum of operation time intervals and calendar day elapsed time intervals. And it is inferred in a relational operation judging circuit 4 that, when frequency of bleeding operation is high in a period corresponding to operation is high and frequency of bleeding operation in intermittent operation is low, there is vacuum leakage in a high temperature part during operation, and when bleeding operation is performed at almost constant intervals during both long period operation and intermittent operation, there is a vacuum leakage in non-high temperature part.;COPYRIGHT: (C)1995,JPO