Modular designed high performance heat pump system for a vehicle with low waste heat radiation

Patent metadata

Field	Value
Publication number	US-10160290-B2
Application number	US-201615217013-A
Country	US
Kind code	B2
Filing date	Jul 22, 2016
Priority date	Jul 23, 2015
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

An air conditioning system for conditioning air of a passenger compartment of a motor vehicle. The air conditioning system operable in a cooling mode, a heat pump mode, and a reheating mode, the system includes an enclosure with a first flow channel and a second flow channel conducting air, and a refrigerant circulation system with a heat exchanger operable as an evaporator independent of the operating mode and a heat exchanger operable as a condenser independent of the operating mode. Both heat exchangers are located inside the enclosure. The refrigerant circulation system also includes a heat exchanger outside of the enclosure and inside the refrigerant path, an expansion element upstream from the evaporator in the flow direction of the refrigerant, and a bypass parallel to the refrigerant path to channel the refrigerant around the heat exchanger as needed.

First claim

What is claimed is:

1. An air conditioning system for conditioning air of a passenger compartment of a motor vehicle, the air conditioning system operable in a cooling mode, a heat pump mode, and a reheating mode, the air conditioning system comprising:
an enclosure with a first flow channel and a second flow channel conducting air, the first flow channel including a first cold air flow path extending through the first flow channel to the passenger compartment and a second cold air flow path extending through the first flow channel to surroundings of the enclosure; and
a refrigerant circulation system including a heat exchanger operable as an evaporator, a heat exchanger operable as a condenser, the heat exchanger operable as the evaporator and the heat exchanger operable as the condenser located inside the enclosure, the refrigerant circulation system further including a heat exchanger located outside of the enclosure and inside of a refrigerant path, and an expansion element disposed in the refrigerant circulation system upstream from the heat exchanger operable as the evaporator in a flow direction of a refrigerant, wherein the refrigerant circulation system includes a first bypass positioned parallel to the refrigerant path to channel the refrigerant around the heat exchanger located outside of the enclosure as needed, wherein the second cold air flow path includes an air flow device for opening and closing between a fully open or a fully closed position during the reheating mode, and wherein the air flow device of the second cold air flow path is closed in the cooling mode and the heat pump mode.

2. The air conditioning system according to claim 1 , wherein the first cold air flow path and the second cold air flow path are positioned in the first flow channel downstream from the heat exchanger operable as the evaporator in an air flow direction, wherein a conditioned air mass flow channeled through the first flow channel can be divided into partial air mass flows including a first partial air mass flow channeled through the first cold air flow path into the passenger compartment and a second partial air mass flow channeled through the second cold air flow path into surroundings of the enclosure.

3. The air conditioning system according to claim 1 , wherein the enclosure includes a bypass channel around the heat exchanger operable as the evaporator, the bypass channel including an air flow device for opening and closing, and wherein an air mass flow propelled by a blower is channeled around the heat exchanger operable as the evaporator when the air flow device of the bypass channel is open.

4. The air conditioning system according to claim 1 , wherein the heat exchanger operable as the evaporator covering an entire cross-section flow area of the enclosure is positioned before an entrance into the first flow channel and an entrance into the second flow channel, and wherein an air mass flow propelled by a blower is channeled around the heat exchanger operable as the evaporator.

5. The air conditioning system according to claim 1 , wherein the refrigerant circulation system includes a second bypass disposed to channel the refrigerant around the heat exchanger operable as the evaporator, and wherein the refrigerant can be channeled around the heat exchanger operable as the evaporator as needed.

6. The air conditioning system according to claim 1 , wherein the refrigerant path includes an expansion element positioned upstream from the heat exchanger located outside of the enclosure in the flow direction of the refrigerant.

7. The air conditioning system according to claim 3 , wherein the heat exchanger located outside of the enclosure can be operated as an evaporator.

8. The air conditioning system according to claim 1 , further comprising a coolant circulation system with a heat exchanger for transfer of heat from a coolant to air channeled into the passenger compartment, the heat exchanger for transfer of heat from the coolant positioned in the second flow channel of the enclosure.

9. The air conditioning system according to claim 1 , further comprising a coolant circulation system with a heat exchanger for transfer of heat from a coolant to air channeled into the passenger compartment, the heat exchanger for transfer of heat from the coolant positioned in the first flow channel of the enclosure.

10. The air conditioning system according to claim 1 , further comprising a coolant circulation system with a refrigerant-coolant heat exchanger for transfer of heat from a coolant to the refrigerant.

Assignees

• Hanon Systems

Inventors

• Durrani Navid
• Della Rovere Roberto
• Graaf Marc

Classifications

• B60H1/00921 Primary

  where the flow direction of the refrigerant does not change and there is an extra subcondenser, e.g. in an air duct · CPC title

• B60H1/00385

  for vehicles having an electrical drive, e.g. hybrid or fuel cell · CPC title

• B60H2001/00307

  Component temperature regulation using a liquid flow · CPC title

• B60H1/00278

  for the battery · CPC title

• B60H2001/00178

  comprising an air passage from the HVAC box to the exterior of the cabin · CPC title