# US 2023/0054052 A1 · Vehicle air conditioner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0054052 A1 - Document ID: US20230054052A1 - Status: Published application - Kind: A1 - Application number: 17/796,868 - Filed: 2021-02-17 - Published: 2023-02-23 - Earliest claimed: 2020-02-19 - Assignees: Hanon Systems - Applicants: Hanon Systems - Inventors: Yong Eun SEO; Tae Wan KIM; Sang Chul BYON; Jong Gon LEE; Tae Gun LEE; Sang II HWANG; Sae Dong EOM - Web page: https://patentgrep.com/patent/US20230054052A1 ## CPC - B60H 1/00028: {Constructional lay-out of the devices in the vehicle} - B60H 1/00842: {the system comprising a plurality of damper doors; Air distribution between several outlets} - B60H 1/00064: {for sending air streams of different temperatures into the passenger compartment} - B60H 1/00685: {the door being a rotating disc or cylinder or part thereof (B60H1/00678 takes precedence)} - B62D 25/14: Dashboards as superstructure sub-units (other dashboard aspects B60K) - B60H 2001/00092: {of air deflecting or air directing means inside the device} - B60H 2001/00164: {with more than one by-pass} - 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 - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) ## Abstract A vehicle air conditioner for supplementing and regulating the air volume discharged to front seats and rear seats through a door component that controls a passage, and enabling the length of a package in the direction of a heater core to be reduced. The vehicle air conditioner has an air passage comprising: a front seat air passage through which cold air or hot air is discharged toward the front seats of a vehicle; and a rear seat air passage through which cold air or hot air is discharged toward the rear seats of the vehicle, wherein the front seat air passage comprises a front seat cooling passage and a front seat heating passage, and the rear seat path comprises a rear seat cooling passage and a rear seat heating passage, and includes: a first mixing part in which the cold air of the front seat cooling passage and the hot air of the front seat heating passage are mixed; and a second mixing part in which the cold air of the rear seat cooling path and the hot air of the rear seat heating path are mixed. ## Claims ### Claim 1 An air conditioner for a vehicle, comprising: an air conditioning case having an air inlet for introducing air, air outlets for discharging the introduced air to the interior of the vehicle, and an air passage formed therein; a cooling heat exchanger and a heating heat exchanger disposed in the air passage of the air conditioning case to exchange heat with the air passing through the heat exchangers, the cooling heat exchanger and the heating heat exchanger being arranged sequentially, wherein the air passage comprises: a front seat air passage through which cold air or hot air is discharged toward a front seat of a vehicle; and a rear seat air passage through which cold air or hot air is discharged toward the rear seats of the vehicle, wherein the front seat air passage comprises a front seat cooling air passage and a front seat heating air passage, and wherein the rear seat air passage comprises a rear seat cooling air passage and a rear seat heating air passage, further comprising: a first mixing part in which the cold air of the front seat cooling air passage and the hot air of the front seat heating air passage are mixed; and a second mixing part in which the cold air of the rear seat cooling air passage and the hot air of the rear seat heating air passage are mixed. ### Claim 2 (depends on 1) The air conditioner according to claim 1, further comprising: a communication part disposed downstream of the first mixing part and the second mixing part so that the front seat air passage and the rear seat air passage communicate with each other; and an air volume distribution door disposed at the communication part to control the volume of air discharged to a front seat air outlet and a rear seat air outlet. ### Claim 3 (depends on 2) The air conditioner according to claim 2, wherein the air volume distribution door is formed in a dome type to control the air volume of the front seat air passage and the air volume of the rear seat air passage. ### Claim 4 (depends on 2) The air conditioner according to claim 2, wherein the air volume distribution door is positioned to separate and partition the front seat air passage and the rear seat air passage. ### Claim 5 (depends on 2) The air conditioner according to claim 2, wherein the air volume distribution door is positioned to connect the front seat air passage and the rear seat air passage and to close the rear seat outlet. ### Claim 6 (depends on 2) The air conditioner according to claim 2, wherein the air volume distribution door is positioned to connect the front seat air passage and the rear seat air passage and to close the front seat outlet while opening the rear seat outlet. ### Claim 7 (depends on 1) The air conditioner according to claim 1, further comprising: a front seat temperature control door disposed at the upper end of the downstream side of the cooling heat exchanger to simultaneously adjust an opening degree of the front seat cooling air passage and an opening degree of the front seat heating air passage. ### Claim 8 (depends on 1) The air conditioner according to claim 1, further comprising: a rear seat temperature control door disposed at the upper end of the downstream side of the cooling heat exchanger to simultaneously adjust an opening degree of the rear seat cooling air passage and an opening degree of the rear seat heating air passage. ### Claim 9 (depends on 7) The air conditioner according to claim 7, wherein the front seat temperature control door has a shield formed in one direction around a driving shaft. ### Claim 10 (depends on 7) The air conditioner according to claim 7, further comprising: an auxiliary front seat temperature control door disposed at the upper end of the downstream side of the heating heat exchanger to adjust an opening degree of the front seat heating air passage. ### Claim 11 (depends on 8) The air conditioner according to claim 8, further comprising: an auxiliary rear seat temperature control door disposed at the lower end of the downstream side of the heating heat exchanger to adjust an opening degree of the rear seat heating air passage. ### Claim 12 (depends on 1) The air conditioner according to claim 1, wherein the air conditioner for a vehicle includes a dash panel for partitioning an engine room from the interior of the vehicle, the plurality of heat exchangers are arranged in the engine room, and the plurality of air discharge vents are arranged in the interior of the vehicle. ### Claim 13 (depends on 12) The air conditioner according to claim 12, wherein the first mixing part and the second mixing part respectively have bottleneck portions of which the air passages are narrowed, and the bottleneck portions are respectively formed at penetration parts of the dash panel.