초록 ▼

According to the present invention, in a brine type air-conditioning apparatus in which brine circulates into an inside cooler to cool a passenger compartment, there are provided a refrigeration cycle using flammable gas as refrigerant, a brine circuit in which the brine circulates, a hot water circ

According to the present invention, in a brine type air-conditioning apparatus in which brine circulates into an inside cooler to cool a passenger compartment, there are provided a refrigeration cycle using flammable gas as refrigerant, a brine circuit in which the brine circulates, a hot water circuit in which hot water heated by an engine circulates, a front air-conditioning unit for performing an air-conditioning of a front portion in the passenger compartment, a rear air-conditioning unit for performing an air-conditioning of a rear portion in the passenger compartment. In the front air-conditioning unit, there are provided a cooler for cooling conditioned air by using the brine, a heater for heating conditioned air by using the hot water, a blower. In the rear air-conditioning unit, there are provided an air-conditioning heat exchanger for cooling conditioned air by using the brine and for heating conditioned air by using the hot water, and a blower. For adjusting a temperature of the low-temperature side, the heating amount by the heater is set to zero, and a temperature of the brine is variably controlled by varying a capacity of the refrigeration cycle.

대표청구항 ▼

[ What is claimed is:] [1.] A brine type air-conditioning apparatus for performing an air-conditioning of a compartment, comprising:a refrigeration cycle having a brine-refrigerant heat exchanger for performing heat-exchange between refrigerant composed of flammable refrigerant and brine, in which t

[ What is claimed is:] [1.] A brine type air-conditioning apparatus for performing an air-conditioning of a compartment, comprising:a refrigeration cycle having a brine-refrigerant heat exchanger for performing heat-exchange between refrigerant composed of flammable refrigerant and brine, in which the refrigerant circulates and is evaporated while absorbing heat from the brine in said brine-refrigerant heat exchanger;means for forming a brine circuit in which the brine cooled in said brine-refrigerant heat exchanger circulates;means for forming a hot water circuit in which hot water flows;a first air-conditioning unit for performing an air-conditioning of a first area in said compartment;a second air-conditioning unit for performing an air-conditioning of a second area in said compartment;a cooler disposed in said first air-conditioning unit, for cooling conditioned air by using the brine in said brine circuit;a heater disposed at an air downstream side of said cooler in said first air conditioning unit, for heating conditioned air by using the hot water in said hot water circuit;a first blower disposed in said first air-conditioning unit, for blowing conditioned air;an air-conditioning heat exchanger disposed in said second air-conditioning unit, for cooling conditioned air by using the brine in the brine circuit and for heating conditioned air by using the hot water;a second blower disposed in said second air-conditioning unit, for blowing conditioned air;capacity changing means for variably changing a capacity of said refrigeration cycle to vary a temperature of the brine in said brine circuit;heating amount control means for controlling a heating amount by said heater; anda valve for switching a flow into said air-conditioning heat exchanger, between the brine in said brine circuit and the hot water in said hot water circuit, said valve also being for adjusting an amount of the flow into said air-conditioning heat exchanger; wherein,when a target temperature of air to be blown into said compartment is lower than a predetermined temperature, the capacity of said refrigeration cycle is variably changed by said capacity changing means to perform a temperature control of low-temperature side in said first and second air-conditioning units, andafter the target temperature of air to be blown into said compartment is increased up to the predetermined temperature, a temperature control of high-temperature side is performed in said first air-conditioning unit by said heating amount control means, and a temperature control of high-temperature side is performed in said second air-conditioning unit by said valve.