Air-conditioning system for a motor vehicle

Patent metadata

Field	Value
Publication number	US-2016207371-A1
Application number	US-201414770846-A
Country	US
Kind code	A1
Filing date	Oct 1, 2014
Priority date	Oct 2, 2013
Publication date	Jul 21, 2016
Grant date	—

Abstract

An air conditioning system for conditioning the air of a passenger compartment of a motor vehicle comprises a housing with a first and a second flow conduit for conducting air and a coolant circuit with at least two heat exchangers, wherein a first heat exchanger is arranged in the first flow conduit and a second heat exchanger is arranged in the second flow conduit. The first heat exchanger can be operated independently of the operating mode as an evaporator and the second heat exchanger can be operated independently of the operating mode as a condenser. The housing comprises at least one air conduction device with which an air mass flow conditioned in the air conditioning system can be discharged into the environment. The coolant circuit is constructed with a heat exchanger which is arranged outside of the housing and can be operated as an evaporator or as a condenser.

First claim

1 - 10 . (canceled)

11 . An air conditioning system for a vehicle comprising:
a housing with a first flow conduit and a second flow conduit for conducting air, a first air conduction device configured to selectively shunt at least a portion of the air into an environment; and a coolant circuit including a first heat exchanger arranged in the first flow conduit, a second heat exchanger arranged in the second flow conduit, and a third heat exchanger arranged outside of the housing and operable as one of an evaporator or a condenser; wherein the air conditioning system is operable in a refrigerating system mode, a heat pump mode, and a reheating mode, wherein the first heat exchanger is operable independently of the operating mode of the air conditioning system as an evaporator and the second heat exchanger is operable independently of the operating mode of the air conditioning system as a condenser.

12 . The air conditioning system according to claim 11 , wherein the first flow conduit is divided into a first cold air path and a second cold air path downstream of the first heat exchanger in a direction of flow of the air.

13 . The air conditioning system according to claim 12 , wherein the first cold air path is configured to direct a first partial air mass flow of the air to the environment and the second cold air path is configured to direct a second partial air mass flow of the air to a passenger compartment of the vehicle.

14 . The air conditioning system according to claim 13 , wherein the first air conduction device is disposed in the first cold air path.

15 . The air conditioning system according to claim 14 , wherein the first air conduction device is adjustable between an open position allowing the first partial air mass flow to be discharged to the environment and a closed position blocking the first partial air mass flow from being discharged to the environment.

16 . The air conditioning system according to claim 13 , wherein the second flow conduit is divided into a first warm air path and a second warm air path downstream of the second heat exchanger in the direction of flow of the air.

17 . The air conditioning system according to claim 16 , wherein the first warm air path is configured to direct a third partial air mass flow of the air to the environment and the second warm air path is configured to direct a fourth partial air mass flow of the air to the passenger compartment of the vehicle.

18 . The air conditioning system according to claim 17 , wherein a second air conduction device is disposed in the first warm air path.

19 . The air conditioning system according to claim 18 , wherein the second air conduction device is adjustable between an open position allowing the third partial air mass flow to be discharged to the environment and a closed position blocking the third partial air mass flow from being discharged to the environment.

20 . The air conditioning system according to claim 11 , wherein each of the first heat exchanger, the second heat exchanger, and the third heat exchanger are constructed as a coolant-air heat exchanger.

21 . The air conditioning system according to claim 11 , wherein a first blower is disposed upstream of the first heat exchanger in a direction of flow of the air for conducting the air through the housing.

22 . The air conditioning system according to claim 21 , wherein the first blower delivers a first air mass flow into the first flow conduit and a second blower delivers a second air mass flow into the second flow conduit, wherein the first blower and the second blower are independently operable.

23 . The air conditioning system according to claim 11 , wherein a bypass conduit is provided around the first heat exchanger.

24 . The air conditioning system according to claim 23 , further comprising a second air conduction device disposed in the bypass conduit to selectively allow an air mass flow delivered by a blower to be conducted through the bypass conduit and around the first heat exchanger.

25 . A method for operating an air conditioning system having a plurality of operating modes including a refrigerating system mode, a heat pump mode, and a reheating mode for conditioning air of a passenger compartment of a vehicle, the method comprising the following steps when in the reheating mode:
providing an air mass flow through a housing of the air conditioning system; cooling the air mass flow when passing over an evaporator of a coolant circuit, the air mass flow transferring heat energy to a coolant of the coolant circuit; dividing the air mass flow after passing over the evaporator, the air mass flow divided into a first partial air mass flow discharged into an environment, a second partial air mass flow for reheating, and a third partial air mass flow cooled in the evaporator; heating the second partial air mass flow by passing over a condenser of the coolant circuit, wherein at least a portion of the heat energy transferred to the coolant in the evaporator is at least partially transferred to the condenser and a heat exchanger of the coolant circuit arranged outside of the housing; mixing the reheated second partial air mass flow with the third partial air mass flow to form a mixed air mass flow; and introducing the mixed air mass flow into the passenger compartment of the vehicle.

26 . The method according to claim 25 , wherein each of the first partial air mass flow, the second partial air mass flow, and the third partial air mass flow includes between 0% and 100% of the air mass flow, and the second partial air mass flow for reheating includes greater than 0% of the air mass flow.

27 . A method for operating an air conditioning system having a plurality of operating modes including a refrigerating system mode, a heat pump mode, and a reheating mode for conditioning air of a passenger compartment of a vehicle, the method comprising the following steps when in the heat pump mode:
providing a first partial air mass flow and a second partial air mass flow through a housing of the air conditioning system; cooling the first partial air mass flow when passing over an evaporator of a coolant circuit, the first partial air mass flow transferring heat energy to a coolant of the coolant circuit; dividing the first partial air mass flow after passing over the evaporator, the first partial air mass flow divided into a partial air mass flow discharged into an environment and a partial air mass flow for introduction into the passenger compartment; heating the second partial air mass flow when passing over a condenser of the coolant circuit, wherein at least a portion of the heat energy transferred to the coolant in the evaporator is at least partially transferred to each of the condenser and a heat exchanger of the coolant circuit arranged outside of the housing; mixing the partial air mass flow for introduction into the passenger compartment with the second partial air mass flow after passing over the condenser to form a mixed air mass flow; and introducing the mixed air mass flow into the passenger compartment of the vehicle.

28 . The method according to claim 27 , wherein the first partial air mass flow is further divided after passing over the evaporator to include a partial air mass flow for reheating, wherein the partial air mass flow for reheating passes over the condenser after mixing with the second partial air mass flow.

29 . The method according to claim 28 , wherein the partial air mass flow for reheating is mixed with the partial air mas

Assignees

• Halla Visteon Climate Control
• Halla Visteon Climate Control

Inventors

• Della Rovere Roberto
• Graaf Marc
• Durrani Navid

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

• B60H1/00028 Primary

  Constructional lay-out of the devices in the vehicle · CPC title

• B60H2001/00949

  comprising additional heating/cooling sources, e.g. second evaporator · CPC title

• B60H1/00392

  for electric vehicles having only electric drive means · CPC title

• B60H1/0005

  the air being firstly cooled and subsequently heated or vice versa · CPC title