PURPOSE: To perform proper cooling effect over the full revolution range of a compressor by branching a main coolant circuit between a condenser and an evaporator and forming an injection circuit with a coolant controller to be connected to a capacity control compressor.
CONSTITUTION: An injection circuit is so formed as to connect the middle part between a condenser 2 and a main circuit decompressor 3 to a revolution control compressor through a flow rate controller valve 5. Thus, following the frequency change at a bridge inverter control circuit according to the load, the revolution number of the compressor also changes. Therefore, according to the degree of load, a controller H controls the flow rate controller valve to be open or closed so as to increase or decrease the amount of injection. Thus, the injection amount is controlled in proportion to the revolution number of the revolution control compressor 1, always obtaining-proper cooling effect.
| JP6365066 | Air conditioning system |
| WO/2006/075592 | REFRIGERATING DEVICE |
YUZUTA JIROU
INOTA KENICHI
