# US 2013/0252528 A1 · Air-condition system for vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0252528 A1 - Document ID: US20130252528A1 - Status: Published application - Kind: A1 - Application number: 13/991,781 - Filed: 2011-12-06 - Published: 2013-09-26 - Earliest claimed: 2010-12-09 - Assignees: Calsonic Kansei Corporation - Inventors: Toshio Yajima; Takashi Fujita - Web page: https://patentgrep.com/patent/US20130252528A1 ## CPC - B60H 1/242: {located in the front area} - B60H 1/247: {Disposition of several air-diffusers in a vehicle for ventilation-air circulation in a vehicle cabin} - B60H 1/3407: {providing an air stream in a fixed direction, e.g. using a grid or porous panel} - B60H 2001/002: {to front and rear part of passenger compartment} - B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES ## Abstract An air-condition system includes an air-conditioner having a main blower, a main duct and a heat exchanger, a suction port disposed near a seat, and a sub duct of which one end is connected to the suction port. The air-conditioner suctions air into the main duct through the sub duct, and blows the air into the passenger compartment again. According to the air-condition system, the conditioned air blown out into the passenger compartment is suctioned from the suction port disposed near the seat. Therefore, the conditioned air is recovered and a flow of conditioned air backward from the suction port is restricted, so that comfortable zone air-conditioning can be done. It is unnecessary to provide a heat exchanger used only for zone air-conditioning and thereby simplicity of the system configurations and cost reduction can be brought. ## Claims ### Claim 1 An air-condition system for a vehicle, comprising: an air-conditioner that includes a main blower, a main duct and a heat exchanger, and is configured to convert air suctioned into the main duct into desired conditioned air by the heat exchanger and to blow out the conditioned air into a passenger compartment; a suction port disposed near a seat for an occupant; and a sub duct of which one end is connected to the suction port to suction air from the suction port, wherein the air-conditioner suctions air that has been suctioned into the sub duct into the main duct, and blows the air into the passenger compartment again. ### Claim 2 (depends on 1) The air-condition system according to claim 1, wherein another end of the sub duct is connected to the main duct, and the suction port and the main duct are communicated with each other by the sub duct. ### Claim 3 (depends on 2) The air-condition system according to claim 2, further comprising a selector door capable of shutting communication of an inside of the sub duct with an inside of the main duct. ### Claim 4 (depends on 2) The air-condition system according to claim 2, wherein the other end of the sub duct is connected to the main duct at a position upstream from the main blower. ### Claim 5 (depends on 4) The air-condition system according to claim 4, further comprising a sub blower for introducing air into the sub duct. ### Claim 6 (depends on 2) The air-condition system according to claim 2, wherein the sub duct is connected to the main duct at a position between the main blower and the heat exchanger, and the system further comprises a sub blower for introducing air from the suction port into the sub duct. ### Claim 7 (depends on 2) The air-condition system according to claim 2, wherein the suction port is provided on a seat. ### Claim 8 (depends on 7) The air-condition system according to claim 7, wherein the suction port is disposed at an upper portion of a seatback of the seat. ### Claim 9 (depends on 2) The air-condition system according to claim 2, further comprising a temperature sensor for detecting temperature of air suctioned from the suction port. ### Claim 10 (depends on 1) The air-condition system according to claim 1, further comprising a sub blower for introducing air from the suction port into the sub duct, wherein another end of the sub duct is opened near the air-conditioner to form an opening. ### Claim 11 (depends on 10) The air-condition system according to claim 10, wherein the suction port is provided on a seat. ### Claim 12 (depends on 11) The air-condition system according to claim 11, wherein the suction port is disposed at an upper portion of a seatback of the seat. ### Claim 13 (depends on 10) The air-condition system according to claim 10, wherein the opening of the sub duct is disposed near an interior air intake port of the air-conditioner, and opened toward the interior air intake port. ### Claim 14 (depends on 10) The air-condition system according to claim 10, wherein the air-conditioner includes a supplemental interior air intake port, and a supplemental door for opening and closing the supplemental interior air intake port. ### Claim 15 (depends on 10) The air-condition system according to claim 10, further comprising a temperature sensor for detecting temperature of air suctioned from the suction port.