Air conditioning system for controlling the temperature of components and of an interior of a motor vehicle

Abstract

The invention relates to an air conditioning system for controlling the temperature of components and of the interior of a motor vehicle, comprising a first water pump (C. 3 ) that drives a first coolant circuit ( 100 ), a second water pump (C. 4 ) that drives a second coolant circuit ( 200 ), a compressor (A. 1 ) that drives a refrigerant circuit ( 300 ) that has a high-pressure side and a low-pressure side, an air-water heat exchanger (C. 5 ) connected to the first coolant circuit ( 100 ) on the water side and arranged upstream from the interior on the air side, a first refrigerant-coolant heat exchanger (A. 2 ) connected to the refrigerant circuit ( 300 ) on the refrigerant side and arranged upstream from the air-water heat exchanger (C. 5 ) on the water side, and a second refrigerant-coolant heat exchanger (A. 10 ) connected to the refrigerant circuit ( 300 ) on the refrigerant side and located downstream from the potential heat sources on the water side.

1 . An air conditioning system for controlling the temperature of components and of the interior of a motor vehicle, comprising
 a first water pump that drives a first coolant circuit,   a second water pump that drives a second coolant circuit,   a compressor that drives a refrigerant circuit that has a high-pressure side and a low-pressure side,   an air-water heat exchanger connected to the first coolant circuit on the water side and arranged upstream from the interior on the air side, and   a first refrigerant-coolant heat exchanger connected to the refrigerant circuit on the refrigerant side and arranged upstream from the air-water heat exchanger on the water side.   
     
     
         2 . The air conditioning system according to  claim 1 , wherein the first refrigerant-coolant heat exchanger is connected to the high-pressure side of the refrigerant circuit. 
     
     
         3 . The air conditioning system according to  claim 1 , wherein the air conditioning system has a valve array by means of which the first refrigerant-coolant heat exchanger can be disconnected from the refrigerant circuit on the refrigerant side. 
     
     
         4 . The air conditioning system according to  claim 1 , wherein an air flap that controls an air stream flowing through the air-water heat exchanger into the interior is arranged upstream from the air-water heat exchanger on the air side. 
     
     
         5 . The air conditioning system according to  claim 1 , wherein the valve array can connect a heat source of the motor vehicle to the first coolant circuit, so that it can be connected upstream from the first refrigerant-coolant heat exchanger. 
     
     
         6 . The air conditioning system according to  claim 1 , wherein the valve array can connect a heat source of the motor vehicle to the second coolant circuit, so that it can be connected upstream from the second refrigerant-coolant heat exchanger. 
     
     
         7 . The air conditioning system according to  claim 6 , wherein the heat source of the motor vehicle has at least one element chosen from the group consisting of: an electric component, an electric traction component, a power electronics unit, a battery, an internal combustion engine and an electric auxiliary heater. 
     
     
         8 . The air conditioning system according to  claim 7 , wherein the air conditioning system has an evaporator that is connected to a low-pressure side of the refrigerant circuit on the refrigerant side and that is located upstream from the air-water heat exchanger on the air side. 
     
     
         9 . The air conditioning system according to  claim 1 , wherein the air conditioning system has a second refrigerant-coolant heat exchanger connected to the second coolant circuit on the water side and connected to the low-pressure side of the refrigerant circuit on the refrigerant side. 
     
     
         10 . The air conditioning system according to  claim 1 , wherein the refrigerant circuit has a condenser through which an ambient air stream flows, whereby said condenser can be selectively connected to the high-pressure side or to the low-pressure of the refrigerant circuit by means of the valve array. 
     
     
         11 . The air conditioning system according to  claim 1 , wherein the air conditioning system has a third coolant circuit that is driven by a third water pump in order to separately cool the internal combustion engine. 
     
     
         12 . A method for air conditioning a motor vehicle having an electric traction system, by means of an air conditioning system according to  claim 1 , comprising
 transporting a heat flow from the first refrigerant-coolant heat exchanger to the air-water heat exchanger during the heating mode of the air conditioning system, whereby the heat flow, controlled by the valve array, stems from at least one of the following components of the motor vehicle: the heat source of the motor vehicle, the electric component, the electric traction component, the power electronics unit, the battery, the internal combustion engine and/or the high-pressure side of the refrigerant circuit,   transporting a heat flow from the second refrigerant-coolant heat exchanger to the pressure level of the refrigerant circuit on the suction side in a heating mode of the air conditioning system, whereby, as a function of settings of valves of the refrigerant circuit and of the first and second coolant circuits, the heat flow stems from at least one of the following components of the motor vehicle: the heat source of the motor vehicle, the electric component, the electric traction component, the power electronics unit, the battery, the internal combustion engine and/or the low-pressure side of the refrigerant circuit,   transport of transporting a heat flow from the condenser to the pressure level of the refrigerant circuit on the suction side in a heating mode of the air conditioning system, whereby, as a function of settings of valves of the refrigerant circuit and of the first and second coolant circuits and of an ambient air stream, the heat flow stems from at least one of the following components of the motor vehicle: the heat source of the motor vehicle, the electric component, the electric traction component, the power electronics unit, the battery, the internal combustion engine and/or the low-pressure side of the refrigerant circuit,   transporting a cold flow from the second refrigerant-coolant heat exchanger in a component cooling mode to at least one of the following components of the motor vehicle: the heat source of the motor vehicle, the electric component, the electric traction component, the power electronics unit, the battery, the internal combustion engine and/or the electric auxiliary heater.   
     
     
         13 . The method according to  claim 12 , comprising
 transporting a cold flow from the evaporator into the interior of the motor vehicle during the interior cooling mode or during the interior reheating mode.   
     
     
         14 . (canceled)