초록 ▼

In an air conditioner for a vehicle, a flow speed of air flowing through a first ventilation part of an evaporator is faster than a flow speed of air flowing through a second ventilation part of the evaporator when an intensive air-conditioning operation for a driver seat is operated, with respect t

In an air conditioner for a vehicle, a flow speed of air flowing through a first ventilation part of an evaporator is faster than a flow speed of air flowing through a second ventilation part of the evaporator when an intensive air-conditioning operation for a driver seat is operated, with respect to a case where a normal air-conditioning operation is performed. In this case, a correct target evaporator temperature is calculated to be higher by a predetermined temperature than a target evaporator temperature, and a detected temperature detected by an evaporator sensor is approached to the correct target evaporator temperature. Therefore, it can restrict the second ventilation part from being frosted.

대표청구항 ▼

1. An air conditioner for a vehicle, comprising: an air-conditioning duct in which air to be blown into a passenger compartment of the vehicle flows;a cooling heat exchanger disposed in the air-conditioning duct and cooling the air, the cooling heat exchanger having a first ventilation part and a se

1. An air conditioner for a vehicle, comprising: an air-conditioning duct in which air to be blown into a passenger compartment of the vehicle flows;a cooling heat exchanger disposed in the air-conditioning duct and cooling the air, the cooling heat exchanger having a first ventilation part and a second ventilation part through which the air flows;a temperature detector detecting a temperature of the air cooled at the cooling heat exchanger;a partition plate disposed downstream of the cooling heat exchanger in a flow direction of air and partitioning a first air passage in which the air flowing through the first ventilation part flows and a second air passage in which the air flowing through the second ventilation part flows; anda controller setting a target cooling temperature of the air cooled at the cooling heat exchanger and controlling a cooling capacity of the cooling heat exchanger to control a detected temperature detected by the temperature detector to be the target cooling temperature, whereinthe air after passing through the first ventilation part flows to a driver seat through the first air passage, and the air after passing through the second ventilation part flows to a passenger seat through the second air passage,the controller is capable of selecting a ventilation state between (i) a first ventilation state in which a flow speed of the air flowing through the first ventilation part is substantially the same as a flow speed of the air flowing through the second ventilation part, (ii) a second ventilation state in which the flow speed of the air flowing through the first ventilation part is faster than the flow speed of the air flowing through the second ventilation part, and (iii) a third ventilation state in which the flow speed of the air flowing through the first ventilation part is slower than the flow speed of the air flowing through the second ventilation part,the temperature detector is disposed only at the first ventilation part and detects a temperature of the air cooled at the first ventilation part,when the air conditioner is mounted to one of a right-hand-drive vehicle and a left-hand-drive vehicle, (i) the controller determines the target cooling temperature based on a target blowing temperature of the air to be blown into the passenger compartment and controls the cooling capacity of the cooling heat exchanger such that the detected temperature approaches the target cooling temperature, in a normal air-conditioning operation providing the first ventilation state in which the driver seat and the passenger seat are air-conditioned generally by the same degree, and(ii) the controller sets a correct target evaporator temperature to be higher by a predetermined temperature than the target cooling temperature determined based on the target blowing temperature of the air to be blown into the passenger compartment and controls the cooling capacity of the cooling heat exchanger such that the detected temperature approaches the correct target evaporator temperature, in an intensive air-conditioning operation providing the second ventilation state in which the driver seat is air-conditioned intensively, andwhen the air conditioner is mounted to the other one of the right-hand-drive vehicle and the left-hand-drive vehicle, the controller (i) determines the target cooling temperature based on the target blowing temperature in both of the normal air-conditioning operation and the intensive air-conditioning operation and (ii) controls the cooling capacity of the cooling heat exchanger such that the detected temperature approaches the target cooling temperature. 2. The air conditioner for a vehicle according to claim 1, further comprising: a first air outlet provided to the air-conditioning duct such that air flowing through the first ventilation part is blown toward one of the driver seat and the passenger seat in the passenger compartment through the first air outlet; anda second air outlet provided to the air-conditioning duct such that air flowing through the second ventilation part is blown toward the other one of the driver seat and the passenger seat in the passenger compartment through the second air outlet, whereinwhen the air conditioner is mounted to the one of the right-hand-drive vehicle and the left-hand-drive vehicle, the second ventilation state is set when the controller controls a flow rate of air blowing from the second air outlet to be smaller than a flow rate of air blowing from the first air outlet, andwhen the air conditioner is mounted to the other one of the right-hand-drive vehicle and the left-hand-drive vehicle, the third ventilation state is set in a case where the controller controls the flow rate of air blowing from the first air outlet to be smaller than the flow rate of air blowing from the second air outlet. 3. The air conditioner for a vehicle according to claim 2, further comprising: a switching device opening or closing the first air outlet and the second air outlet, whereinthe controller controls the switching device to close the second air outlet or to decrease an opening degree of the second air outlet in the second ventilation state, with respect to the first ventilation state, andthe controller controls the switching device to close the first air outlet, or to decrease an opening degree of the first air outlet in the third ventilation state with respect to the first ventilation state. 4. The air conditioner for a vehicle according to claim 1, wherein the predetermined value used to determine the correct target evaporator temperature is determined based on an outside air temperature, an air outlet mode, and a blower flow rate.