| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a damper failure diagnosis device for an air conditioning system capable of diagnosing failure of a damper based on temperature of outside air supplied to an air conditioner, temperature of supply air supplied from the air conditioner to an indoor side to be air-conditioned and temperature of return air returned from the indoor side to the air conditioner even when using a mechanism which cannot detect an actual opening of the damper as a diagnosis target and send the detection signal to a control part. <P>SOLUTION: The damper failure diagnosis device 1 for the air conditioning system includes: a normal time characteristic formula A/B determination/storage part 33 storing a normal time characteristic formula determined based on the temperature of the outside air 5, the temperature of the supply air 7 and the temperature of the return air 4 detected by respective temperature sensors 12, 13, 14 in the normal state; and a comparison/determination part 34 determining that the damper is broken when a difference at a certain level or more is generated between values of the temperature of the outside air 5, the temperature of the supply air 7 and the temperature of the return air 4 measured during the failure diagnosis and a value of a temperature in accordance with the normal time characteristic formula. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
