Air conditioning and hot water supply complex system

Abstract

There is provided an air conditioning and hot water supply complex system that can simultaneously treat a cooling load, a heating load and a high-temperature hot water supply load and supply a stable heat source throughout the year. In the air conditioning and hot water supply complex system 100 , the outdoor heat exchanger 103 is made up of a plurality of divided heat exchangers 103 a , solenoid valves 209 are provided to respective refrigerant pipes connected to the respective divided heat exchanger 103 a , and the solenoid valves 209 are opened or closed to control a flow rate of air conditioning refrigerant flowing into the respective divided heat exchangers 103 a to thereby adjust the operation range of the air conditioning compressor 101.

1 . An air conditioning and hot water supply complex system comprising;
 a heat source unit having an air conditioning compressor, a flow path switching means and an outdoor heat exchanger, and   a plurality of indoor heat exchangers connected by two or more pipes,   wherein a cooling and heating simultaneous operation, in which part of the plurality of indoor heat exchangers perform cooling and part of the same perform heating simultaneously, is operable,   a hot water supply heat source heat exchanger and a hot water supply heat source throttle means connected in series are connected to the indoor heat exchanger in parallel and,   a cooling operation, a heating operation and a hot water supply operation are performed simultaneously or selectively according to an air conditioning load and a hot water supply load.   
     
     
         2 . The air conditioning and hot water supply complex system of  claim 1 ,
 wherein the outdoor heat exchanger is made up of a plurality of heat exchangers or divided into a plurality of heat exchangers, and   a refrigerant flow rate flowing into the respective plurality of heat exchangers or plurality of divided heat exchangers are controlled.   
     
     
         3 . An air conditioning and hot water supply complex system comprising:
 an air conditioning refrigerating cycle including a first refrigerant circuit and circulating an air conditioning refrigerant through the first refrigerant circuit, the first refrigerant circuit being formed by connecting an air conditioning compressor, a flow path switching means, an outdoor heat exchanger, an indoor heat exchanger, and an air conditioning throttle means in series, connecting a refrigerant-refrigerant heat exchanger and a hot water supply heat source throttle means in series, and connecting the refrigerant-refrigerant heat exchanger and the hot water supply heat source throttle means to the indoor heat exchanger and the air conditioning throttle means in parallel;   a hot water supply refrigerating cycle including a second refrigerant circuit and circulating a hot water supply refrigerant through the second refrigerant circuit, the second refrigerant circuit being formed by connecting a hot water supply compressor, a heat medium-refrigerant heat exchanger, a hot water supply throttle means, and the refrigerant-refrigerant heat exchanger in series; and   a hot water supply load including a water circuit and circulating hot water supply water through the water circuit, the water circuit being formed by connecting a water circulating pump, the heat medium-refrigerant heat exchanger, and a hot water storage tank in series,   wherein the air conditioning refrigerating cycle and the hot water supply refrigerating cycle are cascade-connected so that the air conditioning refrigerant and the hot water supply refrigerant exchange heat in the refrigerant-refrigerant heat exchanger,   the hot water supply refrigerating cycle and the hot water supply load are cascade-connected so that the hot water supply refrigerant and the water exchange heat in the heat medium-refrigerant heat exchanger,   the outdoor heat exchanger is made up of a plurality of heat exchangers or divided into a plurality of heat exchangers,   opening and closing valves are provided to each of refrigerant pipes connected to the plurality of heat exchangers or the plurality of divided heat exchangers, and   the opening and closing valves are opened or closed to control flow rates of the air conditioning refrigerant flowing into the respective heat exchangers to adjust an operation range of the air conditioning compressor.   
     
     
         4 . The air conditioning and hot water supply complex system of  claim 3 ,
 wherein, when pressure of the refrigerant sucked into the air conditioning compressor is not lower than a preset acceptable value, the opening and closing valves are controlled so that the pressure of the refrigerant sucked into the air conditioning compressor does not exceed the acceptable value.   
     
     
         5 . The air conditioning and hot water supply complex system of  claim 3 ,
 wherein at least one of the refrigerant pipes is formed as a bypass circuit bypassing the outdoor heat exchanger and is provided with a bypass opening and closing valve, and   the bypass opening and closing valve is opened or closed to allow the air conditioning refrigerant to flow into the bypass circuit to thereby adjust the operation range of the air conditioning compressor.   
     
     
         6 . The air conditioning and hot water supply complex system of  claim 3 ,
 wherein a hot water supply heat medium circulating cycle including a heat medium circuit and circulating a heat medium for warming through the heat medium circuit is provided between the hot water supply refrigerating cycle and the hot water supply load, the heat medium circuit being formed by connecting a heat medium circulating pump, the heat medium-refrigerant heat exchanger, and a heat medium-heat medium heat exchanger in series,   the hot water supply refrigerating cycle and the hot water supply heat medium circulating cycle are cascade-connected so that the hot water supply refrigerant and the heat medium exchange heat in the heat medium-refrigerant heat exchanger, and,   the hot water supply heat medium circulating cycle and the hot water supply load are cascade-connected so that the heat medium and the water exchange heat in the heat medium-heat medium heat exchanger.   
     
     
         7 . The air conditioning and hot water supply complex system of  claim 3 , wherein a refrigerant having a critical temperature not lower than 60° C. is employed for the hot water supply refrigerant. 
     
     
         8 . The air conditioning and hot water supply complex system of  claim 4 ,
 wherein at least one of the refrigerant pipes is formed as a bypass circuit bypassing the outdoor heat exchanger and is provided with a bypass opening and closing valve, and   the bypass opening and closing valve is opened or closed to allow the air conditioning refrigerant to flow into the bypass circuit to thereby adjust the operation range of the air conditioning compressor.   
     
     
         9 . The air conditioning and hot water supply complex system of  claim 4 ,
 wherein a hot water supply heat medium circulating cycle including a heat medium circuit and circulating a heat medium for warming through the heat medium circuit is provided between the hot water supply refrigerating cycle and the hot water supply load, the heat medium circuit being formed by connecting a heat medium circulating pump, the heat medium-refrigerant heat exchanger, and a heat medium-heat medium heat exchanger in series,   the hot water supply refrigerating cycle and the hot water supply heat medium circulating cycle are cascade-connected so that the hot water supply refrigerant and the heat medium exchange heat in the heat medium-refrigerant heat exchanger, and,   the hot water supply heat medium circulating cycle and the hot water supply load are cascade-connected so that the heat medium and the water exchange heat in the heat medium-heat medium heat exchanger.   
     
     
         10 . The air conditioning and hot water supply complex system of  claim 5 ,
 wherein a hot water supply heat medium circulating cycle including a heat medium circuit and circulating a heat medium for warming through the heat medium circuit is provided between the hot water supply refrigerating cycle and the hot water supply load, the heat medium circuit being formed by connecting a heat medium circulating pump, the heat medium-refrigerant heat exchanger, and a heat medium-heat medium heat exchanger in series,   the hot water supply refrigerating cycle and the hot water supply heat medium circulating cycle are cascade-connected so that the hot water supply refrigerant and the heat medium exchange heat in the heat medium-refrigerant heat exchanger, and,   the hot water supply heat medium circulating cycle and the hot water supply load are cascade-connected so that the heat medium and the water exchange heat in the heat medium-heat medium heat exchanger.   
     
     
         11 . The air conditioning and hot water supply complex system of  claim 4 , wherein a refrigerant having a critical temperature not lower than 60° C. is employed for the hot water supply refrigerant. 
     
     
         12 . The air conditioning and hot water supply complex system of  claim 5 , wherein a refrigerant having a critical temperature not lower than 60° C. is employed for the hot water supply refrigerant. 
     
     
         13 . The air conditioning and hot water supply complex system of  claim 6 , wherein a refrigerant having a critical temperature not lower than 60° C. is employed for the hot water supply refrigerant.