Control device for air conditioning system, air conditioning system, and method for determining anomaly of air conditioning system

Abstract

A control device for an air conditioning system is provided with: an outdoor-unit control part capable of communication with an outdoor unit (B) through a communication medium, the outdoor-unit control part acquiring, through the communication medium, information about machinery installed in the outdoor unit (B) and outputting control commands to the machinery installed in the outdoor unit (B); and an indoor-unit control part capable of communication with an indoor unit (A) through a communication medium, the indoor-unit control part acquiring, through the communication medium, information about machinery installed in the indoor unit (A) and outputting control commands to the machinery installed in the indoor unit (A). The control device individually changes the operating point of the machinery installed in the indoor unit (A) or the outdoor unit (B), acquires a predetermined state quantity before and after the change, and executes a malfunction prediction operation to determine the presence or absence of an anomaly in the machinery. The control device for the air conditioning system can thereby ascertain the operating state of the air conditioning system more simply and accurately.

1 . A control device for an air conditioning system including one or a plurality of outdoor units and one or a plurality of indoor units, the control device comprising:
 outdoor-unit control means capable of communication with the outdoor unit through a communication medium, the outdoor-unit control means acquiring, through the communication medium, information about machinery installed in the outdoor unit and outputting a control command to the machinery installed in the outdoor unit;   indoor-unit control means capable of communication with the indoor unit through the communication medium, the indoor-unit control means acquiring, through the communication medium, information about machinery installed in the indoor unit and outputting a control command to the machinery installed in the indoor unit; and   anomaly determination means for determining the presence or absence of an anomaly in the machinery by individually changing an operating point of the machinery installed in the outdoor unit or the indoor unit and acquiring a predetermined state quantity before and after the change.   
     
     
         2 . The control device for an air conditioning system according to  claim 1 , wherein the anomaly determination means acquires the predetermined state quantity that fluctuates more easily according to a change in the operating point of the machinery, and determines the presence or absence of an anomaly in the machinery. 
     
     
         3 . The control device for an air conditioning system according to  claim 1 ,
 wherein the anomaly determination means determines the presence or absence of an anomaly of the machinery by changing the operating point of the machinery in order one by one for the plurality of indoor units and the plurality of outdoor units.   
     
     
         4 . The control device for an air conditioning system according to  claim 1 ,
 wherein the anomaly determination means determines the presence or absence of an anomaly of the machinery during the operation of the air conditioning system.   
     
     
         5 . The control device for an air conditioning system according to  claim 1 ,
 wherein the amount of a refrigerant within the air conditioning system is calculated on the basis of the state quantity.   
     
     
         6 . An air conditioning system comprising:
 one or a plurality of outdoor units;   one or a plurality of indoor units; and   the control device according to  claim 1 .   
     
     
         7 . A method for determining an anomaly of an air conditioning system including one or a plurality of outdoor units and one or a plurality of indoor units, outdoor-unit control means capable of communication with the outdoor unit through a communication medium, the outdoor-unit control means acquiring, through the communication medium, information about machinery installed in the outdoor unit and outputting a control command to the machinery installed in the outdoor unit, and indoor-unit control means capable of communication with the indoor unit through the communication medium, the indoor-unit control means acquiring, through the communication medium, information about machinery installed in the indoor unit and outputting a control command to the machinery installed in the indoor unit, the method comprising:
 individually changing an operating point of the machinery installed in the outdoor unit or the indoor unit;   acquiring a predetermined state quantity before and after the change; and   determining the presence or absence of an anomaly in the machinery.   
     
     
         8 . The control device for an air conditioning system according to  claim 2 ,
 wherein the anomaly determination means determines the presence or absence of an anomaly of the machinery by changing the operating point of the machinery in order one by one for the plurality of indoor units and the plurality of outdoor units.   
     
     
         9 . The control device for an air conditioning system according to  claim 2 ,
 wherein the anomaly determination means determines the presence or absence of an anomaly of the machinery during the operation of the air conditioning system.   
     
     
         10 . The control device for an air conditioning system according to  claim 3 ,
 wherein the anomaly determination means determines the presence or absence of an anomaly of the machinery during the operation of the air conditioning system.   
     
     
         11 . The control device for an air conditioning system according to  claim 2 ,
 wherein the amount of a refrigerant within the air conditioning system is calculated on the basis of the state quantity.   
     
     
         12 . The control device for an air conditioning system according to  claim 3 ,
 wherein the amount of a refrigerant within the air conditioning system is calculated on the basis of the state quantity.   
     
     
         13 . The control device for an air conditioning system according to  claim 4 ,
 wherein the amount of a refrigerant within the air conditioning system is calculated on the basis of the state quantity.   
     
     
         14 . An air conditioning system comprising:
 one or a plurality of outdoor units;   one or a plurality of indoor units; and   the control device according to  claim 2 .   
     
     
         15 . An air conditioning system comprising:
 one or a plurality of outdoor units;   one or a plurality of indoor units; and   the control device according to  claim 3 .   
     
     
         16 . An air conditioning system comprising:
 one or a plurality of outdoor units;   one or a plurality of indoor units; and   the control device according to  claim 4 .   
     
     
         17 . An air conditioning system comprising:
 one or a plurality of outdoor units;   one or a plurality of indoor units; and   the control device according to  claim 5 .