Vehicle air conditioner with front air passage and rear air passage

An air conditioner for a vehicle having a passenger compartment, comprising:

• an air-conditioning case for defining a front air passage through which air flows at least toward an upper side of a front seat in the passenger compartment, and a rear air passage through which air flows toward a rear seat in the passenger compartment;
• a blower for blowing air into the passenger compartment through the front air passage and the rear air passage;
• an air-amount adjustment unit which adjusts an amount of air blown at least toward the upper side of the front seat in the passenger compartment;
• an opening/closing unit for opening and closing the rear air passage;
• air-amount determination means for determining an air-blowing amount of the blower;
• and
• air-amount correction means for increasing the air-blowing amount determined by the air-amount determination means when the rear air passage is opened by the opening/closing unit, wherein
• the air-amount correction means sets an increase amount of the air-blowing amount to be larger when an amount of air blown to the upper side of the front seat is larger than a predetermined amount, than that when the amount of air blown to the upper side of the front seat is smaller than the predetermined amount;
• when the air-blowing amount determined by the air-amount determining means is smaller than a first set value, the air-amount correction means increases the air-blowing amount by an increase amount that is smaller than a first amount;
• when the air-blowing amount determined by the air-amount determining means is larger than a second set value larger than the first set value, the air-amount correction means increases the air-blowing amount by an increase amount that is larger than a second amount larger than the first amount;
• and
• when the air-blowing amount determined by the air-amount determining means is between the first set value and the second set value, the air-amount correction means increases the air-blowing amount by an increase amount between the first amount and the second amount.

An air conditioner for a vehicle having a passenger compartment, comprising:

• an air-conditioning case for defining a front air passage through which air flows at least toward an upper side of a front seat in the passenger compartment, and a rear air passage through which air flows toward a rear seat in the passenger compartment;
• a blower for blowing air into the passenger compartment through the front air passage and the rear air passage;
• an air-amount adjustment unit which adjusts an amount of air blown at least toward the upper side of the front seat in the passenger compartment;
• an opening/closing unit for opening and closing the rear air passage;
• air-amount determination means for determining an air-blowing amount of the blower;
• and
• air-amount correction means for increasing the air-blowing amount determined by the air-amount determination means when the rear air passage is opened by the opening/closing unit, wherein
• the air-amount correction means sets an increase amount of the air-blowing amount to be larger when an amount of air blown to the upper side of the front seat is larger than a predetermined amount, than that when the amount of air blown to the upper side of the front seat is smaller than the predetermined amount;
• at a downstream end side of the front air passage, the air conditioning case has a face opening from which air is blown to the upper side of the front seat, and a foot opening from which air is blown to a lower side of the front seat;
• the air-amount adjustment unit is a mode door for opening and closing the face opening and the foot opening, the air conditioner further comprising:
• mode determination means for manually setting an air outlet mode by a passenger in the passenger compartment, among a face mode where air is blown from the face opening, a bi-level mode where air is blown from the face opening and the foot opening, and a foot mode where air is blown from the foot opening, wherein,
• the air-amount correction means sets the increase amount of the air-blowing amount at a small value in the foot mode, sets the increase amount of the air-blowing amount at a middle value larger than the small value in the bi-level mode, and sets the increase amount of the air-blowing amount at a large value larger than the middle value in the face mode.

An air conditioner for a vehicle having a passenger compartment, comprising:

• an air-conditioning case for defining a front air passage through which air flows at least toward an upper side of a front seat in the passenger compartment, and a rear air passage through which air flows toward a rear seat in the passenger compartment;
• a blower for blowing air into the passenger compartment through the front air passage and the rear air passage;
• an air-amount adjustment unit which adjusts an amount of air blown at least toward the upper side of the front seat in the passenger compartment;
• an opening/closing unit for opening and closing the rear air passage;
• air-amount determination means for determining an air-blowing amount of the blower;
• and
• air-amount correction means for increasing the air-blowing amount determined by the air-amount determination means when the rear air passage is opened by the opening/closing unit,
• a heating heat exchanger for heating air flowing in the front air passage and the rear air passage;
• an air mixing door for adjusting a ratio between an air amount passing through the heating heat exchanger and an air amount bypassing the heating heat exchanger;
• and
• door open-degree determination means for increasing an open degree of the air mixing door as the target temperature increases, wherein
• the air-amount correction means sets an increase amount of the air-blowing amount to be larger when an amount of air blown to the upper side of the front seat is larger than a predetermined amount, than that when the amount of air blown to the upper side of the front seat is smaller than the predetermined amount;
• the air-amount correction means increases the increase amount of the air-blowing amount, determined by the air-amount determination means, larger in a small open-degree area and a large open-degree area of the air mixing door, than that in a middle open-degree area between the small open-degree area and the large open-degree area.

An air conditioner for a vehicle having a passenger compartment, comprising:

• an air-conditioning case for defining a front air passage through which air flows toward an upper side of a front seat in the passenger compartment, and a rear air passage through which air flows toward a rear seat in the passenger compartment, the air conditioning case having a face opening through which air is blown toward an upper side of the front seat in the passenger compartment and a foot opening through which air is blown toward a lower side of the front seat in the passenger compartment at a downstream side of the front air passage;
• a blower for blowing air into the passenger compartment through the front air passage and the rear air passage;
• a mode door for opening and closing the face opening and the foot opening to set a face mode where air is blown from the face opening, a bi-level mode where air is blown from both the face opening and the foot opening, and a foot mode where air is blown from the foot opening;
• an opening/closing unit for opening and closing the rear air passage;
• target temperature calculating means for calculating a target temperature of air blown toward the front seat;
• air-amount determination means for determining an air-blowing amount of the blower, the air-amount determining means determines the air-blowing amount to be larger in a low temperature area where the target temperature is lower than a first predetermined temperature or in a high temperature area where the target temperature is higher than a second predetermined temperature higher than the first predetermined temperature, and determines the air-blowing amount to be smaller in a middle temperature area where the target temperature is between the first predetermined temperature and the second predetermined temperature;
• mode determining means for determining an air outlet mode based on the calculated target temperature, the mode determining means determining the face mode in the low temperature area, the bi-level mode in the middle temperature area, and the foot mode in the high temperature area;
• and
• air-amount correction means for increasing the air-blowing amount determined by the air-amount determination means when the rear air passage is opened by the opening/closing unit,
• wherein the air-amount correction means sets an increase amount of the air-blowing amount to be larger in the face mode and in the foot mode, than that in the bi-level mode.

An air conditioner for a vehicle having a passenger compartment, comprising:

• an air-conditioning case for defining a front air passage through which air flows toward a front seat in the passenger compartment, and a rear air passage through which air flows toward a rear seat in the passenger compartment;
• a blower for blowing air into the passenger compartment through the front air passage and the rear air passage;
• an opening/closing unit for opening and closing the rear air passage;
• target temperature calculating means for calculating a target temperature of air blown toward the front seat;
• air-amount determination means for determining an air-blowing amount of the blower, the air-amount determining means determines the air-blowing amount to be larger in a low temperature area where the target temperature is lower than a first predetermined temperature or in a high temperature area where the target temperature is higher than a second predetermined temperature higher than the first predetermined temperature, and determines the air-blowing amount to be smaller in a middle temperature area where the target temperature is between the first predetermined temperature and the second predetermined temperature;
• and
• air-amount correction means for increasing the air-blowing amount determined by the air-amount determination means when the rear air passage is opened by the opening/closing unit, wherein:
• when the air-blowing amount determined by the air-amount determining means is larger than a predetermined amount, the air-amount correction means increases the air-blowing amount by an increase amount that is larger than that when the air-blowing amount determined by the air-amount determining means is smaller than the predetermined amount.

An air conditioner for a vehicle having a passenger compartment, comprising:

• an air-conditioning case for defining a front air passage through which air flows toward an upper side of a front seat in the passenger compartment, and a rear air passage through which air flows toward a rear seat in the passenger compartment, the air conditioning case having a face opening through which air is blown toward an upper side of the front seat in the passenger compartment and a foot opening through which air is blown toward a lower side of the front seat in the passenger compartment at a downstream side of the front air passage;
• a blower for blowing air into the passenger compartment through the front air passage and the rear air passage;
• a mode door for opening and closing the face opening and the foot opening to set a face mode where air is blown from the face opening, a bi-level mode where air is blown from both the face opening and the foot opening, and a foot mode where air is blown from the foot opening;
• an opening/closing unit for opening and closing the rear air passage;
• mode determination means for manually setting an air outlet mode by a passenger in the passenger compartment, among a face mode where air is blown from the face opening, a bi-level mode where air is blown from the face opening and the foot opening, and a foot mode where air is blown from the foot opening;
• and
• air-amount correction means for increasing the air-blowing amount determined by the air-amount determination means when the rear air passage is opened by the opening/closing unit, wherein:
• the air-amount correction means sets an increase amount of the air-blowing amount at a small value in the foot mode, sets the increase amount of the air-blowing amount at a middle value larger than the small value in the bi-level mode, and sets the increase amount of the air-blowing amount at a large value larger than the middle value in the face mode.