Central air conditioning system and checking method

Abstract

A controller of a central air conditioning system controls a damper provided for a first target space according to a target temperature. After a predetermined period of time has elapsed since control of the damper provided for the first target space was started according to the target temperature, the controller determines: an association between the controlled damper and the temperature sensor that has detected the changed temperature is correct when a changed temperature detected by a temperature sensor approaches the target temperature in the first target space; and the association between the controlled damper and the temperature sensor that has detected the changed temperature is incorrect when a temperature detected by the temperature sensor does not approach the target temperature in the first target space. Then, the controller outputs a result of determination.

1 . A central air conditioning system comprising:
 a temperature sensor provided in each of a plurality of target spaces;   a plurality of dampers each of which controls a volume of air flowing into a different one of the plurality of the target spaces; and   a controller that controls each of the plurality of dampers, wherein   the controller:
 sets a target temperature for a first target space that is one target space among the plurality of target spaces; 
 controls, according to the target temperature, the damper provided for the first target space; 
 determines, after a predetermined period of time has elapsed since the control of the damper was started, (1) an association between the damper controlled and the temperature sensor that has detected the changed temperature is correct when a changed temperature detected by the temperature sensor approaches the target temperature in the first target space, and (2) the association between the damper controlled and the temperature sensor that has detected the changed temperature is incorrect when a temperature detected by the temperature sensor does not approach the target temperature in the first target space; and 
 outputs a result of the determination. 
   
     
     
         2 . The central air conditioning system according to  claim 1 , wherein
 when the controller determines that the association between the damper controlled and the temperature sensor that has detected the changed temperature is incorrect, and a changed temperature of a second target space different from the first target space among the target spaces approaches the target temperature of the first target space, the controller determines that the damper controlled and the temperature sensor that has detected the changed temperature are associated, the damper being provided for each of the first target space and the second target space, and the temperature sensor being provided for each of the first target space and the second target space.   
     
     
         3 . The central air conditioning system according to  claim 1 , wherein
 when the controller determines that the association between the damper controlled and the temperature sensor that has detected the changed temperature is correct, and the target temperature is not achieved after the predetermined period of time has elapsed, the controller determines that a capability of the damper is insufficient.   
     
     
         4 . The central air conditioning system according to  claim 1 , wherein
 when (i) the changed temperature detected by the temperature sensor is indicated by a first difference value that is a difference value between the target temperature and a temperature at a start point of the predetermined period of time, and by a second difference value that is a difference value between the target temperature and a temperature at an end point of the predetermined period of time, and (ii) the first difference value is greater than the second difference value and a difference between the first difference value and the second difference value is greater than or equal to a predetermined value, the controller determines that the changed temperature approaches the target temperature.   
     
     
         5 . The central air conditioning system according to  claim 1 , wherein
 the controller determines whether the association between the damper controlled and the temperature sensor that has detected the changed temperature is correct for each of the plurality of target spaces.   
     
     
         6 . The central air conditioning system according to  claim 1 , wherein
 the controller includes a display that displays the result of the determination made by the controller.   
     
     
         7 . A method of checking an association between a temperature sensor and a damper by a controller in a central air conditioning system including the temperature sensor, the damper, and the controller, the method comprising:
 setting a target temperature for a first target space that is one of a plurality of target spaces, each of the target spaces being provided with the temperature sensor and the damper;   controlling the damper provided for the first target space according to the target temperature;   after a predetermined period of time has elapsed since the control of the damper was started, (1) determining an association between the damper controlled and the temperature sensor that has detected the changed temperature is correct when a changed temperature detected by the temperature sensor approaches the target temperature in the first target space, and (2) determining the association between the damper controlled and the temperature sensor that has detected the changed temperature is incorrect when a temperature detected by the temperature sensor does not approach the target temperature in the first target space; and   outputting a result of the determination.