Vehicle air conditioner
First Claim
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1. A vehicle air conditioner comprising:
- an air conditioning unit that blows conditioned air through blowout ports, wherein the blowout ports have a face blowout port that blows the conditioned air toward a driver and a top blowout port that blows the conditioned air toward a windshield;
a control unit that controls air volume of the conditioned air blown from the blowout ports based on heat load of a vehicle and controls a blowout port mode having at least a face blowout port mode;
an outside dew point temperature determination means for determining an outside dew point temperature of outside air; and
an outside windshield temperature estimate means for estimating an outside windshield temperature, wherein the control unit controls the air volume of the conditioned air blown from the face blowout port and the top blowout port based on the outside dew point temperature and the estimated outside windshield temperature during the face blowout port mode.
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Abstract
A vehicle air conditioner has an air conditioning unit and an air conditioning control unit. The air conditioning unit has a FACE blowout port, a DEF blowout port, an upper blowout port. The air conditioning control unit estimates an outside windshield temperature and determines an outside dew point temperature. The control unit also controls the upper blowout port to stop blowing or not based on the estimated outside windshield temperature and the outside dew point temperature in a face mode to prevent the windshield from fogging.
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Citations
16 Claims
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1. A vehicle air conditioner comprising:
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an air conditioning unit that blows conditioned air through blowout ports, wherein the blowout ports have a face blowout port that blows the conditioned air toward a driver and a top blowout port that blows the conditioned air toward a windshield;
a control unit that controls air volume of the conditioned air blown from the blowout ports based on heat load of a vehicle and controls a blowout port mode having at least a face blowout port mode;
an outside dew point temperature determination means for determining an outside dew point temperature of outside air; and
an outside windshield temperature estimate means for estimating an outside windshield temperature, wherein the control unit controls the air volume of the conditioned air blown from the face blowout port and the top blowout port based on the outside dew point temperature and the estimated outside windshield temperature during the face blowout port mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vehicle air conditioner comprising:
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an air conditioning unit that blows conditioned air through blowout ports, wherein the blowout ports have a foot blowout port that blows the conditioned air toward foot of a driver and a top blowout port that blows the conditioned air toward a windshield;
a control unit that controls air volume of the conditioned air blown from the blowout ports based on heat load of a vehicle and controls a blowout port mode having at least a foot blowout port mode;
an inside dew point temperature determination means for determining a inside dew point temperature of inside air; and
an inside windshield temperature estimate means for estimating an inside windshield temperature, wherein the control unit controls the air volume of the conditioned air blown from the foot blowout port and the top blowout port based on the inside dew point temperature and the estimated inside windshield temperature during the foot blowout port mode. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification