초록 ▼

A refrigerant circulating system using non-azeothropic mixture as refrigerant, which comprises: a main refrigerant circuit connected by a compressor, a fore-way valve, an outdoor heat-exchanger, a first throttling device, a plurality of indoor heat-exchangers, and a low-pressure receiver; a bypass c

A refrigerant circulating system using non-azeothropic mixture as refrigerant, which comprises: a main refrigerant circuit connected by a compressor, a fore-way valve, an outdoor heat-exchanger, a first throttling device, a plurality of indoor heat-exchangers, and a low-pressure receiver; a bypass circuit diverging from the discharge portion of the compressor, and extending through a composition detecting heat-exchanger and a second throttling device to a low-pressure portion; an outdoor fun attendant of the outdoor heat-exchanger; first temperature detector to detect a refrigerant temperature at the upstream of the second throttling device; second temperature detector to detect a refrigerant temperature at the downstream of the second throttling device; first pressure detector to detect a pressure at the downstream of the second throttling device; third temperature detector to detect temperature in the main circuit between the first throttling device and the indoor heat-exchanger; forth temperature detector to detect temperature at the low-pressure portion; second pressure detector to detect the pressure at the high-pressure portion; a composition calculating device for calculating the composition of the mixture refrigerant; a main controller for controlling the number of rotation of the compressor and the number of rotation of an outdoor fun; a throttle controller for controlling the opening of the first throttling device.

대표청구항 ▼

[ What is claimed is:] [1.] A refrigerant circulating system comprising:a main refrigerant circuit for circulating mixture refrigerant, said main refrigerant circuit including a compressor, a directional control valve, a condenser, a first throttling device and an evaporator;a bypass circuit divergi

[ What is claimed is:] [1.] A refrigerant circulating system comprising:a main refrigerant circuit for circulating mixture refrigerant, said main refrigerant circuit including a compressor, a directional control valve, a condenser, a first throttling device and an evaporator;a bypass circuit diverging from a point between a discharge portion of said compressor and said directional control valve, and connected through a composition detecting heat-exchanger and a second throttling device to a point between an intake portion of said compressor and said directional control valve;first temperature detecting means located to a point between said composition detecting heat-exchanger and said second throttling device, said first temperature detecting means detecting refrigerant temperature at an upstream of said second throttling device;second temperature detecting means located to a point between said composition detecting heat-exchanger and said second throttling device, said second temperature detecting means detecting refrigerant temperature at a downstream of said second throttling device;first pressure detecting means located at an intake side of said compressor, and for detecting a pressure of refrigerant at its located place;a composition calculating device for calculating a composition of mixture refrigerant on the basis of the detected refrigerant temperature and pressure;second pressure detecting means located at the discharge side of said compressor, and for detecting the pressure of refrigerant at its located place; anda main controller for controlling at least compressor speed or fan speed provided to said condenser or evaporator, on the basis of the calculated composition of refrigerant and detected pressure of refrigerant.