Air-conditioning system of a motor vehicle and method for operating the air-conditioning system

An air conditioning system of a motor vehicle, the air conditioning system comprising:

• a refrigeration circuit;
• and
• a coolant circuit, wherein the refrigeration circuit further comprises:
• a compressor;
• a refrigerant-coolant heat exchanger which can be operated as a condenser/gas cooler for heat exchange between a refrigerant and a coolant of the coolant circuit;
• a first refrigerant-air heat exchanger for conditioning intake air for a passenger compartment;
• and
• a first expansion device located upstream with respect to the first refrigerant-air heat exchanger in a flow direction of the refrigerant;
• wherein the coolant circuit further comprises:
• a first conveying device;
• a first coolant-air heat exchanger for heating the intake air for the passenger compartment as well as the refrigerant-coolant heat exchanger
• wherein the refrigeration circuit includes a second refrigerant-air heat exchanger for conditioning the intake air for the passenger compartment,
• wherein a second expansion device is located upstream with respect to the second refrigerant-air heat exchanger in the flow direction of the refrigerant, and the coolant circuit includes a second coolant-air heat exchanger for heating the intake air for the passenger compartment,
• wherein the first refrigerant-air heat exchanger of the refrigeration circuit and the first coolant-air heat exchanger of the coolant circuit are arranged within a first component of an air conditioning unit and in a manner so that the first refrigerant-air heat exchanger of the refrigeration circuit and the first coolant-air heat exchanger can be supplied in series, in a flow direction of the intake air for the passenger compartment,
• wherein the second refrigerant-air heat exchanger of the refrigeration circuit and the second coolant-air heat exchanger of the coolant circuit are arranged within a second component of the air conditioning unit,
• wherein the second refrigerant-air heat exchanger of the refrigeration circuit and the second coolant-air heat exchanger of the coolant circuit are arranged within the second component of the air conditioning unit so the second refrigerant-air heat exchanger of the refrigeration circuit and the second coolant-air heat exchanger of the coolant circuit can be supplied with air in series, in a flow direction, wherein the second component further comprises a bypass for guiding air around the refrigerant-air heat exchanger, and wherein an air guide device is formed for distributing an air mass stream over a heat exchange surface of the second refrigerant-air heat exchanger and through the bypass.

An air conditioning system of a motor vehicle, the air conditioning system comprising:

• a refrigeration circuit;
• and
• a coolant circuit, wherein the refrigeration circuit further comprises:
• a compressor;
• a refrigerant-coolant heat exchanger which can be operated as a condenser/gas cooler for heat exchange between a refrigerant and a coolant of the coolant circuit;
• a first refrigerant-air heat exchanger for conditioning intake air for a passenger compartment;
• and
• a first expansion device located upstream with respect to the first refrigerant-air heat exchanger in a flow direction of the refrigerant;
• wherein the coolant circuit further comprises:
• a first conveying device;
• a first coolant-air heat exchanger for heating the intake air for the passenger compartment as well as the refrigerant-coolant heat exchanger
• wherein the refrigeration circuit includes a second refrigerant-air heat exchanger for conditioning the intake air for the passenger compartment,
• wherein a second expansion device is located upstream with respect to the second refrigerant-air heat exchanger in the flow direction of the refrigerant, and the coolant circuit includes a second coolant-air heat exchanger for heating the intake air for the passenger compartment,
• wherein the first refrigerant-air heat exchanger of the refrigeration circuit and the first coolant-air heat exchanger of the coolant circuit are arranged within a first component of an air conditioning unit and in a manner so that the first refrigerant-air heat exchanger of the refrigeration circuit and the first coolant-air heat exchanger can be supplied in series, in a flow direction of the intake air for the passenger compartment, and wherein the second refrigerant-air heat exchanger of the refrigeration circuit and the second coolant-air heat exchanger of the coolant circuit are arranged within a second component of the air conditioning unit,
• wherein the second component of the air conditioning unit is formed from a first element and a separately arranged second element, and wherein the second coolant-air heat exchanger of the coolant circuit is arranged within the first element of the second component, and the second refrigerant-air heat exchanger of the refrigeration circuit is arranged within the second element of the second component.

An air conditioning system of a motor vehicle, the air conditioning system comprising:

• a refrigeration circuit;
• and
• a coolant circuit, wherein the refrigeration circuit further comprises:
• a compressor;
• a refrigerant-coolant heat exchanger which can be operated as a condenser/gas cooler for heat exchange between a refrigerant and a coolant of the coolant circuit;
• a first refrigerant-air heat exchanger for conditioning intake air for a passenger compartment;
• and
• a first expansion device located upstream with respect to the first refrigerant-air heat exchanger in a flow direction of the refrigerant;
• wherein the coolant circuit further comprises:
• a first conveying device;
• a first coolant-air heat exchanger for heating the intake air for the passenger compartment as well as the refrigerant-coolant heat exchanger
• wherein the refrigeration circuit includes a second refrigerant-air heat exchanger for conditioning the intake air for the passenger compartment,
• wherein a second expansion device is located upstream with respect to the second refrigerant-air heat exchanger in the flow direction of the refrigerant, and the coolant circuit includes a second coolant-air heat exchanger for heating the intake air for the passenger compartment,
• wherein the coolant circuit is formed with a third coolant-air heat exchanger for transferring heat to air,
• wherein the third coolant-air heat exchanger is arranged within a flow path of the coolant circuit which is arranged to enable throughflow of the coolant parallel to a flow path formed with the first coolant-air heat exchanger and/or a flow path formed with the second coolant-air heat exchanger, and
• wherein the coolant circuit further comprises a first flow path configured as a bypass parallel to the flow path of the first coolant-air heat exchanger, the flow path of the second coolant-air heat exchanger, and a flow path of the third coolant-air heat exchanger.