A vehicle air conditioner includes a blower for blowing air into a space of a vehicle compartment, and an air-conditioning mode switching portion for switching between air conditioning modes. The air conditioning modes include a normal air conditioning mode in which air conditioning of a specific re
A vehicle air conditioner includes a blower for blowing air into a space of a vehicle compartment, and an air-conditioning mode switching portion for switching between air conditioning modes. The air conditioning modes include a normal air conditioning mode in which air conditioning of a specific region including a driver seat and air conditioning of a non-specific region not including the specific region in the space of the vehicle compartment are performed, and a specific-region prioritizing air conditioning mode in which an air conditioning capability for the non-specific region is decreased as compared to the normal air conditioning mode. The air-conditioning mode switching portion adjusts the air conditioning capability for the non-specific region based on a pressure of air drawn into the blower, in the specific-region prioritizing air conditioning mode.
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1. An air conditioner for a vehicle, comprising: a single blower that blows air into a vehicle compartment having a specific region in which an occupant is sitting and a non-specific region in which no occupant is sitting;a plurality of air outlets that blow the air blown by the single blower into t
1. An air conditioner for a vehicle, comprising: a single blower that blows air into a vehicle compartment having a specific region in which an occupant is sitting and a non-specific region in which no occupant is sitting;a plurality of air outlets that blow the air blown by the single blower into the vehicle compartment;an air-conditioning mode switching portion that switches between air conditioning modes by opening or closing the plurality of air outlets; anda controller that controls an operation of the air-conditioning mode switching portion, whereinthe air conditioning modes include: a normal air conditioning mode in which air conditioning is performed both in the specific region and the non-specific region; anda specific-region prioritizing air conditioning mode in which a volume of air that is blown to the non-specific region is decreased as compared to a volume of air that is blown to the non-specific region in the normal air conditioning mode,the plurality of air outlets include: a specific-region side air outlet that blows air to the specific region; anda non-specific-region side air outlet that blows air to the non-specific region,the controller starts operating the specific region prioritizing air conditioning mode when an occupant detection sensor detects that an occupant is present only in the specific region, andwhen the specific-region prioritizing air conditioning mode is performed, the controller controls the air-conditioning mode switching portion to keep the air flow consistent then calculates a blower suction pressure such that if the blower suction pressure increases then the controller increases an opening degree of the non-specific-region side air outlet, so as to decrease the volume of air that is blown to the specific region relatively by increasing the volume of air that is blown to the non-specific region. 2. The air conditioner for a vehicle according to claim 1, wherein the blower suction pressure is a pressure of the air drawn into the single blower, andthe controller calculates the blower suction pressure based on at least one of (i) a vehicle speed, (ii) an operation state of an inside/outside air switching portion, which adjusts a flow ratio of air inside the vehicle compartment to air outside the vehicle compartment, introduced into the single blower, and (iii) an operation state of a ram pressure reducing device which reduces a ram pressure during traveling. 3. The air conditioner for a vehicle according to claim 1, wherein when the specific-region prioritizing air conditioning mode is performed, the controller controls the air-conditioning mode switching portion to adjust the volume of air that is blown to the non-specific region based on an air conditioning load and the blower suction pressure. 4. The air conditioner for a vehicle according to claim 1, wherein when fogging of a window is determined to be caused in the specific-region prioritizing air conditioning mode, the controller increases the volume of air that is blown to the non-specific region, or switches the specific-region prioritizing air conditioning mode to the normal air conditioning mode. 5. The air conditioner for a vehicle according to claim 1, further comprising an air conditioning operation portion that sets an air conditioning for the specific region and an air conditioning for the non-specific region independently, whereinwhen the air conditioning operation portion sets the air conditioning for the non-specific region in the specific-region prioritizing air conditioning mode, the controller increases the volume of air that is blown to the non-specific region, or switches the specific-region prioritizing air conditioning mode to the normal air conditioning mode. 6. The air conditioner for a vehicle according to claim 1, wherein when the specific-region prioritizing air conditioning mode is performed, the air-conditioning mode switching portion changes at least one of the volume of air that is blown to the specific region and the volume of air that is blown to the non-specific region over time. 7. The air conditioner for a vehicle according to claim 1, further comprising: a defroster air outlet that is included in the plurality of air outlets and blows air to a window;a specific-region side door that is included in the air-conditioning mode switching portion and adjusts an opening degree of the specific-region side air outlet;a non-specific region side door that is included in the air-conditioning mode switching portion and adjusts an opening degree of the non-specific region side air outlet;a defroster door that is included in the air-conditioning mode switching portion and adjusts an opening degree of the defroster air outlet;a specific-region side link mechanism that drives the specific-region side door and the defroster door in cooperation with each other; anda non-specific region side link mechanism that drives the non-specific region side door, whereinthe controller controls, in a defroster mode: the specific-region side link mechanism to drive the defroster door to open the defroster opening and to drive the specific-region side door to completely close the specific-region side air outlet; andthe non-specific region side link mechanism to drive the non-specific region side door to completely close the non-specific region side air outlet,the controller controls, in a non-defroster mode: the specific-region side link mechanism to drive the specific-region side door to open the specific-region side air outlet; andthe non-specific region side link mechanism to drive the non-specific region side door to open the non-specific side air outlet,when the specific-region prioritizing air conditioning mode is performed, the controller controls the specific-region side link mechanism to set the non-defroster mode, and controls the non-specific region side link mechanism to set the defroster mode. 8. The air conditioner for a vehicle according to claim 1, wherein the controller controls the air-conditioning mode switching portion to set the normal air conditioning mode (i) when passengers occupy seats in the specific region or (ii) when a specific-region prioritizing switch for setting the specific region prioritizing air conditioning mode is not operated, andthe controller controls the air-conditioning mode switching portion to set the specific-region prioritizing air conditioning mode (iii) when no passenger occupies a seat in the non-specific region, or (iv) when the specific-region prioritizing switch is operated. 9. The air conditioner for a vehicle according to claim 1, wherein the blower suction pressure is a ram pressure generated by an air flow caused by movement of the vehicle. 10. The air conditioner for a vehicle according to claim 1, wherein when the specific-region prioritizing mode is performed, the controller increases only the volume of air that is blown to the non-specific region as the blower suction pressure becomes higher. 11. The air conditioner for a vehicle according to claim 1, wherein the specific region includes a driver seat. 12. An air conditioner for a vehicle, comprising: a single blower that blows air into a vehicle compartment having a specific region in which an occupant is sitting and a non-specific region in which no occupant is sitting;a plurality of air outlets that blow the air blown by the single blower to the vehicle compartment;an air-conditioning mode switching portion that switches between air conditioning modes by opening or closing the plurality of air outlets; anda controller that controls an operation of the air-conditioning mode switching portion, whereinthe air conditioning modes include: a normal air conditioning mode in which air conditioning is performed both in the specific region and the non-specific region; anda specific-region prioritizing air conditioning mode in which a volume of air that is blown to the non-specific region is decreased as compared to a volume of air that is blown to the non-specific region in the normal air conditioning mode,the plurality of air outlets include: a specific-region side air outlet that blows air to the specific region; anda non-specific-region side air outlet that blows air to the non-specific region,the controller starts operating the specific region prioritizing air conditioning mode when an occupant detection sensor detects that an occupant is present only in the specific region,when the specific-region prioritizing air conditioning mode is performed, the controller controls the air-conditioning mode switching portion to keep the air flow consistent then calculates a blower suction pressure such that if the blower suction pressure increases then the controller increases an opening degree of the non-specific-region side air outlet, so as to decrease the volume of air that is blown to the specific region relatively by increasing the volume of air that is blown to the non-specific region, andthe controller individually controls the volume of air that is blown to the specific region separate from the volume of air that is blown to the non-specific region. 13. An air conditioner for a vehicle, comprising: a single blower that blows air into a vehicle compartment having a specific region in which an occupant is sitting and a non-specific region in which no occupant is sitting;a plurality of air outlets that blow the air blown by the single blower into the vehicle compartment;an air-conditioning mode switching portion that switches between air conditioning modes by opening or closing the plurality of air outlets; anda controller that controls an operation of the air-conditioning mode switching portion, whereinthe air conditioning modes include: a normal air conditioning mode in which air conditioning is performed both in the specific region and the non-specific region; anda specific-region prioritizing air conditioning mode in which a volume of air that is blown to the non-specific region is decreased as compared to a volume of air that is blown to the non-specific region in the normal air conditioning mode,the plurality of air outlets include: a specific-region side air outlet that blows air to the specific region; anda non-specific-region side air outlet that blows air to the non-specific region,the controller starts operating the specific region prioritizing air conditioning mode when an occupant detection sensor detects that an occupant is present only in the specific region, andwhen the specific-region prioritizing air conditioning mode is performed, the controller controls the air-conditioning mode switching portion to keep the air flow consistent then calculates a blower suction pressure and an air conditioning load andincreases an opening degree of the non-specific-region side air outlet when the air conditioning load increases, so as to decrease the volume of air that is blown to the specific region relatively by increasing the volume of air that is blown to the non-specific region. 14. The air conditioner for a vehicle according to claim 13, wherein the controller calculates the air conditioning load based on at least one of an outside air temperature, a solar radiation amount, a temperature of a vehicle interior, an air-conditioning set temperature, and a surface temperature of a passenger. 15. The air conditioner for a vehicle according to claim 13, wherein the specific-region prioritizing air conditioning mode includes: a low-load air conditioning mode; anda high-load air conditioning mode in which a larger volume of air is blown into the space in the vehicle compartment than in the low-load air conditioning mode,the controller controls the air-conditioning mode switching portion to set the low-load air conditioning mode when the air conditioning load is less than a predetermine load, andthe controller controls the air-conditioning mode switching portion to set the high-load air conditioning mode when the air conditioning load is larger than the predetermined load. 16. The air conditioner for a vehicle according to claim 15, further comprising an energy-saving mode setting portion that sets an energy saving mode for saving power to perform the air conditioning, whereinthe controller shifts the predetermined load to a higher load side when the energy saving mode is set. 17. The air conditioner for a vehicle according to claim 15, wherein the controller shifts the predetermined load to the higher load side when an auxiliary air conditioning device is operated. 18. The air conditioner for a vehicle according to claim 15, wherein the air conditioning load is a cooling load, the controller shifts the predetermined load to a lower load side in the cooling load when a solar radiation amount is greater than a predetermined solar radiation amount. 19. The air conditioner for a vehicle according to claim 15, wherein the air conditioning load is a heating load, the controller shifts the predetermined load to a higher load side in the heating load when a solar radiation amount is greater than a predetermined solar radiation amount.
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Frank Fusco ; Gerhard A. Dage, Adaptive controller for an automotive HVAC system.
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