| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a normal value is different and abnormality of an apparatus is not accurately decided due to a difference in, for example, an outside air temperature and the length of a refrigerant piping or a difference in installation environment, such as an operation horse power, since, in conventional constitution and during diagnosis of a trouble, a prestored Mollier chart during normality is compared with a detecting value during diagnosis of a trouble. SOLUTION: This diagnosing device comprises a first computing means 10 to execute circle simulation of refrigerating cycle characteristics in a normal state and calculate an operation normal value even when installation environment, such as an outside air temperature, is changed, a second computing means 12 to calculate a discharge temperature and the degree of a superheat during operation of an apparatus, and an oil amount diagnosing means 13 to decide abnormality. Thereby, under any installation condition, normality and abnormality are highly-precisely and accurately diagnosed, the trouble inclination of a compressor is detected early, and breakage is prevented from occurring. |
