Air-conditioning system for cooling and drying air in passenger compartment of vehicle

Patent metadata

Field	Value
Publication number	US-2017299232-A1
Application number	US-201515506025-A
Country	US
Kind code	A1
Filing date	Oct 23, 2015
Priority date	Oct 24, 2014
Publication date	Oct 19, 2017
Grant date	—

Abstract

An air-conditioning system for conditioning air in a vehicle passenger compartment is configured to operate in a cooling system mode for cooling air to be supplied to the passenger compartment and in a heat pump mode for heating the same, and to operate in a reheating mode. The air-conditioning system includes a housing having a first flow channel and a second flow channel for guiding air to an air distribution system having discharge ports communicating with the passenger compartment, and a refrigerant circulation system having at least two heat exchangers. In this case, the first heat exchanger that operates as an evaporator regardless of operating modes is disposed in the first flow channel, and the second heat exchanger that operates as a condenser/gas cooler regardless of operating modes is disposed in the second flow channel.

First claim

1 - 11 . (canceled)

12 . An air-conditioning system for conditioning air in a passenger compartment of a vehicle, the air-conditioning system configured to operate in a cooling system mode for cooling the air to be supplied to the passenger compartment and in a heat pump mode for heating the air to be supplied to the passenger compartment, and to operate in a reheating mode, the air-conditioning system comprising:
a housing having a first flow channel and a second flow channel guiding the air to an air distribution system having discharge ports communicating with the passenger compartment; and a refrigerant circulation system having at least two heat exchangers, wherein a first one of the heat exchangers is disposed in the first flow channel, a second one of the heat exchangers is disposed in the second flow channel, the first one of the heat exchangers formed and operable as an evaporator regardless of an operating mode, and the second one of the heat exchangers is formed and operable as a condenser/gas cooler regardless of the operating mode, wherein at least one flow path is formed to directly introduce an air mass flow into the passenger compartment, the at least one flow path extending to the discharge ports from one of the first one of the heat exchangers and the second one of the heat exchanger so that the air mass flow is conditioned by the one of the first one of the heat exchangers and the second one of the heat exchangers and is then immediately guided to the discharge ports.

13 . The air-conditioning system according to claim 12 , wherein the at least one flow path for directly introducing the air mass flow into the passenger compartment is formed as a cold-air flow path, wherein the cold-air flow path is a portion of the first flow channel and extends to an in-dashboard discharge port for directly blowing the air to an occupant in the passenger compartment from a region formed next to the evaporator in a flow direction of the air, and wherein the air mass flow is conditioned by the evaporator and immediately guided to the in-dashboard discharge port at a temperature different from the air mass flow guided to a front window-side discharge port and a discharge port communicating with legroom.

14 . The air-conditioning system according to claim 13 , wherein the cold-air flow path has an air guide device to control an opening degree of the cold-air flow path, and wherein the air guide device is continuously adjustable between two end positions of a “fully closed state” and a “fully opened state”.

15 . The air-conditioning system according to claim 12 , wherein the at least one flow path for directly introducing the air mass flow into the passenger compartment is formed as a hot-air flow path, wherein the hot-air flow path is a portion of the second flow channel and extends to a discharge port communicating with legroom from a region formed next to the condenser in a flow direction of the air so the air mass flow is conditioned by the condenser and immediately guided to the discharge port communicating with the legroom, and has a temperature different from the air mass flow guided to a front window-side discharge port and an in-dashboard discharge port for directly blowing the air to an occupant in the passenger compartment.

16 . The air-conditioning system according to claim 15 , wherein the hot-air flow path has an air guide device to control an opening degree of the hot-air flow path, and wherein the air guide device is continuously adjustable between two end positions in a “fully closed state” and a “fully opened state”.

17 . The air-conditioning system according to claim 12 , wherein the first flow channel is formed next to the evaporator in a flow direction of the air, wherein the first flow channel is divided into a first cold-air flow path with a first air guide device, a second cold-air flow path with a second air guide device, and the at least one flow path with a third air guide device directly introducing the air mass flow into the passenger compartment, thereby enabling the air mass flow conditioned through the first flow channel to be divided into partial air mass flows at positions of the first air guide device, the second air guide device, and the third air guide device, a first partial air mass flow guidable to the air distribution system through the first cold-air flow path, a second partial air mass flow is guidable out of the housing through the second cold-air flow path, and a third partial air mass flow is immediately guidable to an in-dashboard discharge port through the at least one flow path.

18 . The air-conditioning system according to claim 12 , wherein the second flow channel is formed next to the condenser in a flow direction of the air, wherein the second flow channel is divided into a first hot-air flow path with a first air guide device, a second hot-air flow path ( 15 ) with a second air guide device, and the at least one flow path with a third air guide device directly introducing an air mass flow into the passenger compartment, thereby enabling the air mass flow conditioned through the second flow channel to be divided into partial air mass flows at positions of the first air guide device, the second air guide device, and the third air guide device, a first partial air mass flow is guidable to the air distribution system through the first hot-air flow path, a second partial air mass flow is guidable out of the housing through the second hot-air flow path, and a third partial air mass flow is immediately guidable to a discharge port communicating with legroom through the at least one flow path.

19 . A method of operating an air-conditioning system for operating in both a cooling system mode and a heat pump mode for cooling and heating air in a passenger compartment of a vehicle and for operating in a reheating mode, the method comprising steps of:
transferring at least two air mass flows in a housing of the air-conditioning system; cooling or dehumidifying a first one of the at least two air mass flows when the first one of the at least two air mass flows excessively flows in an evaporator of a refrigerant circulation system; dividing the first one of the at least two air mass flows into at least two partial cold-air mass flows, wherein the first one of the at least two air mass flows is divided in a range of 0% to 100%, a first one of the at least two partial cold-air mass flows is guided to an air distribution system in the passenger compartment, and a second one of the at least two partial cold-air mass flows is immediately guided to an in-dashboard discharge port through a cold-air flow path and then guided to the passenger compartment; heating a second one of the at least two air mass flows when the second one of the at least two air mass flows excessively flows in a condenser of the refrigerant circulation system, the second one of the at least two air mass flows guided to the air distribution system in the passenger compartment; mixing the first one of the at least two partial cold-air mass flows with the second one of the at least two air mass flows guided to the air distribution system in the passenger compartment; and introducing the first one of the at least two partial cold-air mass flows and the second one of the at least two air mass flows after mixing into the passenger compartment.

20 . The method according to claim 19 , wherein the first one of the at least two air mass flows is divided in a range of 0% to 100% into a partial air mass flow guided outside and the at least two partial cold-air mass flows.

21 . A method of operating an air-conditioning system for operating in both a cooling system mode and a heat pump mode for cooling and heating air i

Assignees

• Hanon Systems

Inventors

• Richter Gerald
• Graaf Marc
• Roeb Julia
• Spies Toni

Classifications

• F24F1/0011

  characterised by air outlets · CPC title

• F25B13/00 Primary

  Compression machines, plants or systems, with reversible cycle (defrosting cycles F25B47/02) · CPC title

• F24F3/14

  by humidification; by dehumidification · CPC title

• F24F2003/144

  by dehumidification only · CPC title

• B60H2001/00178

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