CONTROL DEVICE AND AIR CONDITIONING DEVICE
|Owner||HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC. (Japan)|
AbstractA control device for an air conditioning device that has a plurality of outdoor units and an indoor unit connected to the plurality of outdoor units by piping, said control device having a control means that controls so as to: find the degree of overcooling at outlets of overcooling circuits of the outdoor units on the basis of the temperature detected by a temperature sensor for detecting the temperature of refrigerant passing through the overcooling circuit of each of the outdoor units before the filling of the refrigerant circuit, which includes the plurality of outdoor units and the indoor unit, with refrigerant is completed; find a target value for the degree of overcooling on the basis of the plurality of degrees of overcooling that were found; and increase the speed of compressors of the outdoor unit having a degree of overcooling greater than the target value and decrease the speed of the compressors of the outdoor unit having a degree of overcooling less than the target value so that differences in the degrees of overcooling at the outlets of the overcooling circuits of the outdoor units are minimized.
IPC Classes ?
- F25B 45/00 - Arrangements for charging or discharging refrigerant