PURPOSE: To prevent pressure fluctuations of a refrigeration cycle when the operation number of indoor units is 1.
CONSTITUTION: A multi-chamber type air conditioning device constitutes a heat pump type refrigeration cycle where a single outdoor unit, which is main equipment, is connected with a compressor equipped with four indoor units and a hydraulic pressure-driven refrigerant capacity control valve 7 by way of piping. The control system is provided with a detection device 16 which detects that the operation number of the indoor units is 1, and a control device 17 which halts the operation of the compressor 1 temporarily and restarts its operation based on this detected signal. When the operation number of signal units is 1, it is possible to eliminate a temporarily excess in the capacity of the compressor produced by a follow-up lag of capacity control by starting the compressor with the minimum capacity after a specified time has lapsed since its suspension and obtain the operation effect that relaxes drastic pressure fluctuations in the system and enables the operation of a single indoor unit.
| JPS57182512 | CONTROLLER OF MOTOR CAR AIR CONDITIONER |
| JP5800496 | Indoor unit of air conditioner |
YAMADA SHINICHIRO
KAWASAKI KENJI
