JP2001310618A - Air conditioning control method and outside air temperature treating method for air conditioner for vehicle, and air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain condensation from occurring without make a feeling of air conditioning worse even in the halt condition of an engine. SOLUTION: In the halt condition of idling, the quantity of internal air introduction of an intake door is increased in proportion to a decrease in the temperature of engine cooling water in the case (see steps 706, 708, 710, and 712) where air conditioning control is put into a heating mode, an in-car-room temperature falls short of a prescribed value, the temperature of an evaporator exceeds a prescribed value, and the temperature of the engine cooling water falls short of a prescribed value in a condition such as an air conditioner has been activated (see steps 702 and 704). The quantity of the internal air introduction of the intake door is increased in proportion to a rise in the in-car-room temperature (see a step 730) and the feeling of the air conditioning is restrained from getting worse after the engine is shut down in the case (see steps 722 and 724) where the air conditioning control is put into a cooling mode, the in-car-room temperature exceeds a prescribed value, and the temperature of the evaporator falls short of a prescribed value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle, and more particularly to an air conditioner for improving comfort of air conditioning control.

[0002]

2. Description of the Related Art Various devices of this type have been proposed (see, for example, Japanese Patent Application Laid-Open No. 2-77313). In these conventional devices, usually, at the time of so-called idling stop, the air conditioner is also configured to stop operating at the same time as the engine stops.
Further, in an air conditioner for a vehicle, an outside air temperature is used as one element of the air conditioning control.
The outside air temperature sensor for detecting the outside air temperature is easily affected by the heat radiation of the engine at the time of idling or in a traffic congestion state, so that the outside air temperature data suitable for air conditioning control is suppressed by suppressing such an influence. For this purpose, various processes have conventionally been proposed for the detection output of the outside air temperature sensor (see, for example, JP-A-63-182534). For example, Japanese Patent Laying-Open No. 63-182534 discloses a system in which the outside air temperature is updated every predetermined time only while the vehicle is running.

[0003]

In the case where the air conditioner is put into an operation stop state at the same time when the engine is stopped at the time of so-called idling stop,
If the idling stop state continues for some time,
In particular, there has been a problem that, in the summer, the air-conditioning feeling is deteriorated due to a decrease in the cooling capacity, while in winter, the dehumidification performance may be reduced due to a decrease in the dehumidification capacity. Also, in the case where the outside air temperature data is updated at predetermined time intervals only while the vehicle is running, even if the vehicle is running at a vehicle speed equal to or higher than a predetermined speed, the temperature of the outside air temperature sensor from the engine can be reduced. Since the effect does not disappear immediately, the erroneous outside air temperature data will be temporarily used for air conditioning control until the detection value of the outside air temperature sensor settles after the vehicle is running, and it is temporarily uncomfortable. There is a problem that an air conditioning state occurs. The present invention has been made in view of the above circumstances, and an air-conditioning control method capable of suppressing the occurrence of dew condensation as much as possible without causing an extreme deterioration in air-conditioning feeling even when the engine is stopped. A vehicle air conditioner is provided. It is another object of the present invention to provide an outside air temperature processing method and a vehicle air conditioner that can obtain appropriate outside air temperature data when the vehicle shifts from a stopped state to a running state. Still another object of the present invention is to provide an outside air temperature processing method and a vehicle air conditioner that can obtain appropriate outside air temperature data according to the vehicle speed and the duration thereof.

[0004]

In order to achieve the object of the present invention, a vehicular air conditioner according to the present invention is characterized in that the amount of inside air and the amount of outside air introduced into the air conditioning duct are variable upstream of the air conditioning duct. A vehicle air conditioner configured so as to be capable of adjusting the temperature of the introduced air so that the air can be blown into the vehicle interior, and a vehicle operating state determining unit that determines an operating state of the vehicle; Activation state determination means for determining whether or not the vehicle air conditioner is activated, air conditioning state determination means for determining a state of air conditioning control by the vehicle air conditioner, and vehicle interior temperature detection means for detecting a temperature in the vehicle interior; An evaporator temperature detecting means for detecting a substantial temperature of the evaporator; a cooling water temperature detecting means for detecting a temperature of engine cooling water; The vehicle air conditioner is determined to be in the activated state by the activation state determination means, and the heating mode is determined by the air conditioning state determination means. It is determined that the detected value of the cabin temperature detecting means has fallen below a predetermined cabin temperature, the evaporator temperature detecting means determines that the substantial temperature of the evaporator has exceeded a predetermined value, and When it is determined by the temperature detecting means that the engine cooling water temperature has fallen below a predetermined value, the amount of inside air introduced by the intake door is increased along with a decrease in the temperature of the engine cooling water, while the vehicle operating state determining means: It is determined that the vehicle is in the idling stop state, and the starting state determining means determines that the vehicle air conditioner is in the activated state. It is, and,
When it is determined by the air-conditioning state determining means that the air conditioner is in the cooling mode, it is determined that the detection value of the vehicle interior temperature detecting means has exceeded a predetermined vehicle interior temperature, and the evaporator temperature detecting means determines that the evaporator And an intake door control means for increasing the amount of inside air introduced by the intake door as the vehicle interior temperature rises when it is determined that the substantial temperature of the vehicle has fallen below a predetermined value.

In such a configuration, even after the engine is stopped, the air conditioned so far is circulated by controlling the opening degree of the intake door by the intake door control means, so that the air conditioning feeling associated with the engine stop is reduced. The decrease is suppressed as much as possible, and the occurrence of dew condensation is suppressed as much as possible, especially in winter.

Further, in order to achieve the object of the present invention, in a vehicle air conditioner according to the present invention, a heat load in a vehicle compartment is calculated based on various environmental factors including an outside air temperature. An air conditioner for a vehicle configured to adjust the temperature of air blown into a vehicle compartment according to a heat load,
The vehicle operating state determining means for determining the driving state of the vehicle, the vehicle speed detecting means for detecting the vehicle speed, the outside air temperature detecting means for detecting the outside air temperature, and the vehicle operating state determining means determine that the vehicle is in an idling state. When it is determined from the detection result of the vehicle speed detecting means that the vehicle has changed from the stopped state to the traveling state, and it is determined that the detected value of the outside air temperature detecting means has increased, the detected value of the outside air temperature means And an outside air temperature updating unit that corrects the detection value of the outside air temperature detecting unit based on the amount of change in the vehicle speed and the vehicle speed detected by the vehicle speed detecting unit, and updates the outside air temperature with the correction value. Things.

In this configuration, when the vehicle changes from a stopped state to a running state, the detection value of the outside air temperature detecting means is corrected by the outside air temperature updating means. Even in a state where the outside air temperature detecting means cannot use the detected value as it is due to the thermal influence of the running of the vehicle, it is possible to obtain a value that can be used for calculating the heat load, and as a result, Thus, appropriate air-conditioning control can be realized.

Further, in order to achieve the object of the present invention, in the vehicle air conditioner according to the present invention, the heat load in the vehicle compartment is calculated based on various environmental factors including the outside air temperature, and the calculated heat load is calculated. An air conditioner for a vehicle configured to adjust the temperature of air blown into a vehicle compartment according to a heat load, an outside air temperature detecting unit that detects an outside air temperature, a vehicle speed detecting unit that detects a vehicle speed, If the detected value of the vehicle speed detecting means exceeds a predetermined value, it is determined that the detected value of the outside air temperature detecting means has been increased, and that the detecting value of the vehicle speed detecting means has been determined. If it is determined that the value exceeds a predetermined value, the update interval of the outside air temperature used for the calculation of the heat load using the detection value of the outside air temperature detection means, the predetermined value measured by the timing means Vehicle speed duration exceeding And outside air temperature updating means for performing at corresponding time interval is made comprises a.

In such a configuration, the outside air temperature updating means updates the outside air temperature used for calculating the heat load by
Heat load is calculated by obtaining a value closer to the actual outside air temperature as compared with the conventional one that simply updates the outside air temperature only to the vehicle speed, since the update is performed at time intervals according to the duration of the vehicle speed As a result, more comfortable air-conditioning control is realized as compared with the related art.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The members, arrangements, and the like described below do not limit the present invention, and can be variously modified within the scope of the present invention. First, a configuration of a vehicle air conditioner according to an embodiment of the present invention will be described with reference to FIG. In this vehicle air conditioner, the most upstream end of the air conditioning duct 1 is branched into an outside air introduction port 2 and an inside air introduction port 3, and this branch portion is used to select air to be introduced into the air conditioning duct 1. An intake door 4 is provided. The position of the intake door 4 can be changed by an actuator 16.
Reference numeral 6 denotes an operation controlled by a control unit 18 described later.

On the downstream side of the air conditioning duct 1, a blower 5, an evaporator 6, and a heater core 7 are sequentially arranged. The evaporator 6 constitutes a so-called cooling cycle together with a compressor (not shown) and the like. The heater core 7 includes the air conditioning duct 1
And a bypass passage 8 is formed between the other side wall of the air conditioning duct 1 and the heater core 7, and in front of the heater core 7, the amount of air passing through the heater core 7, An air mix door 9 for adjusting the amount of air passing through the bypass passage 8 is provided.

Further, the downstream side of the air conditioning duct 1 has a vent outlet 10, a defrost outlet 11 and a foot outlet 12
And a mode door 1 is provided at each of the air outlets.
3a, 13b and 13c are provided respectively. The above-described air mix door 9 and mode doors 13a, 13
Each of b and 13c is configured such that its rotation position can be changed by a motor actuator using a motor such as a stepping motor (not shown). That is, the air mix door 9 is operated by the mix door actuator 14 so that the mode doors 13a, 13b,
13c are driven by the mode actuator 15, respectively. The blower motor 5a attached to the blower 5 is driven by a blower drive circuit 17 to rotate the blower 5.

The control unit 18 controls the operation of the air conditioner based on various sensors and input signals such as switch inputs for setting the air conditioning state, that is, the blower drive circuit 17, the mixed door actuator 14, the mode actuator 15 and the like. The operation is controlled (details will be described later). Also, solar radiation sensor in the air conditioning system, for detecting a substantial evaporator temperature sensor 19 for detecting the temperature Te, an outside air temperature sensor 20 for detecting the outside air temperature Ta, the amount of solar radiation T _S into the passenger compartment of the evaporator 6 21, opening sensor 22 for detecting the actual opening theta _a of the air mix door 9, the passenger compartment temperature sensor 23 for detecting the temperature Tr of the vehicle compartment, the cooling water sensor 24 for detecting the temperature Tw of the engine coolant and, A vehicle speed sensor 25 for detecting the speed Sp of the vehicle is provided, and an output signal of these sensors and a vehicle interior set temperature Tst by a vehicle interior temperature setter (not shown) are controlled as environmental factors affecting a heat load in the vehicle interior. The data is input to the unit 18. In addition, the evaporator temperature sensor 19 is
What is necessary is just to detect the substantial temperature of the evaporator 6, for example, to provide it near the evaporator 6 or to join it directly to an appropriate surface of the evaporator 6. Further, the control unit 18 includes
Information on the opening and closing of the air conditioner switch 26 and the ignition switch 27 for turning on and off the vehicle air conditioner is input, and information indicating the operation state of an engine (not shown) is input. I have. here,
As the information indicating the operating state of the engine, for example, information in an engine control unit (not shown) may be used, and it is not necessary to newly provide a sensor or the like therefor.

Next, the procedure of the air conditioning control performed by the control unit 18 in the above configuration will be described with reference to the flowchart shown in FIG. When the air conditioning control is started, first, various data detected by various sensors and the like are read into the control unit 18 (see step 100 in FIG. 2). Next, a total signal corresponding to the heat load in the vehicle compartment is calculated by a predetermined formula based on the various data read in step 100 described above (see step 200 in FIG. 2). Here, the predetermined formula for obtaining the total signal T is, for example, in the following format.

T = K _R · Tr + K _A · TaD + K _S · T _S -K
_E・ Te + K _st・ Tst + C

In this equation, K _R , K _A , K _S ,
K _E and K _st are gain constants, and C is an operation constant. TaD is a control outside air temperature, and is a value obtained by a predetermined process based on the outside air temperature Ta as described later.

After the total signal is obtained as described above, the set positions of the mode doors 13a to 13c are determined based on a preset relationship between the magnitude of the total signal and the mode door setting. Mode door 1 via mode actuator 15 so as to be in the blow-off mode
The door position control of 3a to 13c is performed (see step 300 in FIG. 2). Next, the rotational speed of the blower motor 5a is set based on a preset relationship between the magnitude of the total signal obtained in step 200 and the rotational speed of the blower motor 5a, and the blower drive is performed so as to reach the set rotational speed. The circuit 17 drives the blower motor 5a (see step 400 in FIG. 2). here,
The rotation speed of the blower motor 5a may be obtained by calculation using a predetermined formula, or may be obtained by referring to a table stored in the control unit 18 in advance.

Subsequently, the operation of a compressor (not shown) constituting a cooling cycle together with the evaporator 6 and the like is controlled in accordance with the magnitude of the total signal by the mode doors 13a to 13a.
3c and the blower motor 5a are controlled in the same manner (see step 500 in FIG. 2). Next, the opening of the air mix door 9 is determined based on a preset relationship between the magnitude of the total signal and the air mix door opening, and the control unit 18 controls the mix door actuator 14 so that the air mixing door 9 has the opening. (See FIG. 2).
Step 600). Here, the air mixing door opening degree may be determined by calculating a predetermined equation every time this step 600 is executed. Alternatively, the magnitude of the total signal and the air mixing door opening degree may be determined. The relationship between the degree and the degree is stored in a predetermined storage area of the control unit 18 in the form of a table, and each time step 600 is executed, the table is referred to to determine the air mix door opening degree. May be either. Finally, the opening degree of the intake door 4 is controlled by the air mix door 9 and the blower motor 5 according to the magnitude of the total signal.
The control is performed in the same manner as in the control (a) (see step 700 in FIG. 2), and thereafter, the process returns to step 100, and the above-described processing is repeated.

Next, air conditioning control by intake door switching control at the time of idling stop will be described with reference to FIG. This series of controls is executed especially at the time of idling stop in addition to the basic control procedure of the vehicle air conditioner described above. For example, the intake door control described above with reference to FIG. 2 ( It is provided so as to be executed as one subroutine in step 700 in FIG. 2). Less than,
More specifically, referring to FIG. 3, first, when the control of this subroutine is started, it is determined whether or not the vehicle is in an idling stop state (indicated as “IDL stop” in step 702 in FIG. 3). Is determined (see step 702 in FIG. 3), and when it is determined that the vehicle is in the idling stop state (in the case of YES), the process proceeds to step 704 described below, while it is determined that the vehicle is not in the idling stop state. In the case of (NO), it is determined that the subsequent series of processing is unnecessary, and the process returns to the main routine.

In step 704, it is determined whether or not the air conditioner switch 26 is in the on state (the state in which the vehicle air conditioner is in the operating state), and if it is determined that the air conditioner switch 26 is in the on state (in the case of YES). Is the next step 7
On the other hand, when it is determined that the camera is not in the ON state (in the case of NO), the subsequent series of processing is determined to be unnecessary, and the processing returns to the main routine. Step 70
In 6, it is determined whether the air conditioning state is the heating mode (heating state). When it is determined that the air conditioning state is the heating mode (heating state) (in the case of YES), the process proceeds to step 708 described below,
If it is determined that the air-conditioning state is not the heating mode (heating state) (NO), the process proceeds to step 722 described below as being in the cooling state.

In step 708, the vehicle interior temperature T
It is determined whether or not r is smaller than a predetermined value Trs1 (first predetermined value). Then, the vehicle interior temperature Tr becomes a predetermined value Tr.
If it is determined that the temperature is lower than s1 (in the case of YES), the process proceeds to step 710 described below, while the vehicle interior temperature T
If it is determined that r does not fall below the predetermined value Trs1 (NO), the process returns to the previous step 706 because there is no need to perform subsequent processes. The predetermined value Trs1 should be determined in consideration of the size of the passenger compartment, the cooling and heating capacity of the vehicle air conditioner, and the like.
Although it cannot be said unconditionally, for example, a value of about 25 ° C. is conceivable. In step 710, it is determined whether or not the temperature Te of the evaporator 6 exceeds a predetermined value Tes1 (second predetermined value). If it is determined that the temperature Te exceeds the predetermined value Tes1 (YES), On the other hand, when it is determined that the value does not exceed the predetermined value Tes1 (in the case of NO), the process proceeds to step 712 to be described later.
Processing proceeds to The reason for determining the temperature Te of the evaporator 6 is that when the temperature of the evaporator 6 is low to some extent, the evaporator 6 is considered to be in a wet state. In order to determine the subsequent processing depending on whether or not exceeds the predetermined value Tes1. Here, the predetermined value Tes1
Should be set in consideration of the capacity of the evaporator 6 and the like.

First, at step 712, it is determined whether or not the temperature Tw of the engine cooling water is lower than a predetermined value Tws (third predetermined value). If it is determined that the temperature Tw is lower than the predetermined value Tws ( In the case of (YES), it means a state in which the temperature of the heater core 7 is decreasing.
In order to suppress the introduction amount of outside air, the door position of the intake door 4 is set to the direction in which the introduction amount of inside air increases (see step 718 in FIG. 3). Here, the amount of change in the door position is determined in advance by, for example, experiments and simulations or the like, by obtaining the correlation between the temperature of the engine cooling water and the optimal amount of inside air introduced. It is preferable that a relational expression for determining the door position or a table for determining the door position of the intake door 4 with respect to the temperature of the engine cooling water be determined, and this relational expression be calculated every time or determined by a table. is there.

After the amount of inside air introduced into the intake door 4 is increased as described above, the mode is adjusted in accordance with the increase in the amount of inside air introduced into the intake door 4 (see step 720 in FIG. 3). ). That is, as the amount of inside air introduced by the intake door 4 is increased, the total signal T described above (see step 200 in FIG. 2) is required to increase the amount of air blown out of the defrost air outlet 11 in accordance with the increased amount. ) Is corrected as, for example, T ′ = T + α. Here, “α” is a correction term, and is a value determined according to the amount of increase in the amount of inside air introduced by the intake door 4, and is determined in advance by increasing the amount of inside air introduced by the intake door 4. As exemplified in the case where the amount is determined, it is preferable that the amount is determined by a predetermined arithmetic expression, a table, or the like. It is also assumed that T ′ is the corrected total signal. The integrated signal T 'thus obtained is subjected to the mode door control (see step 300 in FIG. 2) after the series of processes in this subroutine are completed and the process returns to the main routine described above (see FIG. 2). ) Is used as a new integrated signal, whereby the blowing amount of the defrost outlet 11 is adjusted as described above.

On the other hand, if it is determined in step 710 that the temperature Te of the evaporator 6 does not exceed the predetermined value Tes1 (NO), the evaporator 6 is in a moisture-absorbing state and relatively wet. Therefore, it is determined whether or not a predetermined time has elapsed since the idling stop state (see step 714 in FIG. 3). That is, when it is determined in step 714 that the predetermined time has elapsed (in the case of YES), the temperature Te of the evaporator 6 is sufficiently lowered to the predetermined value Tes1.
Is exceeded, the process proceeds to step 712 described above, and if it is determined that the predetermined time has not yet elapsed (NO), the temperature Te of the evaporator 6 is determined.
Is not yet in the state of exceeding the predetermined value Tes1,
The intake door 4 is set to the outside air introduction position to be in the outside air introduction state (see step 716 in FIG. 3), and thereafter, the process returns to the previous step 706, and a series of processing is repeated again.

On the other hand, in the previous step 706,
When it is determined that the air-conditioning state is not the heating mode (heating state) and the process proceeds to step 722, it is assumed that the air-conditioning mode is the cooling mode, and the vehicle interior temperature Tr exceeds a predetermined value Trs2 (fourth predetermined value). No is determined. Here, the value of the predetermined value Trs2 may be, for example, the same as the predetermined value Trs1 in the previous step 708, or may be a value different from the predetermined value Trs1.
Then, the vehicle interior temperature Tr becomes a predetermined value Trs2 (fourth predetermined value).
If it is determined that it does not exceed (NO),
It is determined that the cooling condition has not deteriorated enough to perform the subsequent processing, and the process returns to the previous step 706. On the other hand, in step 722, the vehicle interior temperature Tr becomes the predetermined value Trs2 (fourth
Is determined to have exceeded the predetermined value (if YES), it is determined whether or not the temperature Te of the evaporator 6 has exceeded the predetermined value Tes2 (fifth predetermined value). (See step 724 in FIG. 3). In step 724, the temperature Te of the evaporator 6 is set to a predetermined value Tes2 (fifth
Is determined to exceed the predetermined value (in the case of YES), it is determined whether or not the vehicle interior temperature Tr exceeds the outside air temperature Ta (see step 726 in FIG. 3). On the other hand, when it is determined that the temperature Te of the evaporator 6 does not exceed the predetermined value Tes2 (fifth predetermined value) (in the case of NO), the process proceeds to step 730 described later. Here, the predetermined value Tes2 may be the same as the predetermined value Tes1 in the previous step 710, or may be a different value.

In step 726, the vehicle interior temperature Tr
Is determined to have exceeded the outside air temperature Ta (YES
In the case where the air conditioner is in the cooling mode, the position of the intake door 4 is set to the outside air introduction position in view of the fact that the air outside the vehicle is lower than the vehicle interior (see step 728 in FIG. 3). ). Next, a so-called fluctuation signal is generated (step 734 in FIG. 3).
reference). Here, the fluctuation signal may be based on a known / known generation method such as a signal called 1 / f fluctuation, and need not be limited to a specific form. Next, signal synthesis of the fluctuation signal generated in step 734 and the fan signal is performed (step 736 in FIG. 3).
reference). That is, first, the fan signal is a voltage signal applied to the blower motor 5a, and is set according to the magnitude of the total signal in the blower control subroutine processing (see step 400 in FIG. 2). The signal synthesis is for synthesizing the signal of the fan signal obtained at this time and the fluctuation signal. For example, as shown in FIG. 4, the fan signal is obtained as 7V of the DC voltage, On the other hand, when the fluctuation signal is a sine wave with an amplitude α, the signal synthesis result (hereinafter, this signal synthesis result is referred to as a “fluctuating fan signal”) is a sine wave that changes with an amplitude α above and below 7v. Will be required. It should be noted that the voltage of the fan signal shown in FIG. 4 is merely an example and should be determined in consideration of the size of the motor to be used. Also, the magnitude of the amplitude α of the fluctuation signal should be determined in consideration of the size of the blower motor 5a to be used. As a specific configuration of generating and synthesizing the fluctuation signal, for example, in the control unit 18, the fan signal and the fluctuation signal are synthesized in a so-called software manner, and the control signal according to the synthesis result is blower-driven. Output to circuit 17,
The blower drive circuit 17 may be configured to generate a voltage signal as a fluctuation fan signal (see FIG. 4) in accordance with the control signal and apply the voltage signal to the blower motor 5a. Further, a control signal for generating a fan signal and a control signal for generating a fluctuation signal are output from the control unit 18 to the blower driving circuit 17, and the fan signal and the fluctuation signal are generated in the blower driving circuit 17. In addition, a configuration may be adopted in which the signal is synthesized, and a voltage signal as a fluctuation fan signal is output to the blower motor 5a.

After the fluctuation fan signal is obtained by the signal synthesis as described above, the process proceeds to step 738, where the fluctuation control of the rotation of the blower motor 5a is performed by the fluctuation fan signal, and the process returns to the main routine. That is, the fluctuation fan signal as shown in FIG. 4 is applied to the blower motor 5a, and as a result, the blower motor 5a
In the example shown in FIG. 4, the rotation speed changes around the rotation speed corresponding to the DC voltage 7v as the voltage changes up and down with the amplitude α, in other words, the rotation speed changes. The fluctuation of the number is performed.

On the other hand, if it is determined in step 726 that the vehicle interior temperature Tr does not exceed the outside air temperature Ta (NO), the process proceeds to step 730, where it is determined that the interior of the vehicle is cooler than the exterior. Considering this, the door position of the intake door 4 is set in a direction in which the amount of inside air introduced further increases. The amount of inside air introduced into the intake door 4 may be, for example, a predetermined value determined by experiments, simulations, or the like, or may be an experiment, simulation, or the like to determine the amount of inside air introduced using the vehicle interior temperature and the outside air temperature as parameters. It is preferable to make the determination based on the equation set by the formula, a table, or the like. After the process of step 730 is performed, the mode is adjusted in step 732. That is,
This mode adjustment is performed basically in the same manner as that described in step 720, when the amount of inside air introduced by the intake door 4 is increased, and in accordance with the increase, the integrated signal T (see FIG. 2 is corrected as, for example, T ′ = T + β. Due to the correction of the total signal, in this case, the vent outlet 10
This increases the amount of air blown from the air. Then, after the mode adjustment is performed as described above, the process returns to the main routine.

In the air conditioner for a vehicle according to the first aspect of the present invention, the vehicle operating state determining means is executed by executing step 702 shown in FIG. By executing step 706, the air-conditioning state determination means is realized. Further, the vehicle interior temperature sensor is realized by the vehicle interior temperature sensor 23, the evaporator temperature detection unit is realized by the evaporator temperature sensor 19, and the cooling water temperature detection unit is realized by the cooling water sensor 24. Further, steps 716 and 718 of FIG.
By executing steps 728 and 728, the intake door control means is realized, and similarly by executing steps 720 and 732, the mode adjusting means is realized. Furthermore, the rotation setting means is realized by executing step 400 in FIG. 2, and the blower motor 5a and the blower driving circuit 1
7, the control unit 18 and the execution of step 400 in FIG. 2 realize a rotation control means. Steps 732, 736, 73 in FIG.
8, the fluctuation control means is realized.

Next, a first example of a method of processing the outside air temperature executed in the vehicle air conditioner shown in FIG. 1 will be described with reference to FIG. First, as described above with reference to FIG. 2, the outside air temperature is used for calculating the total signal. Usually, the outside air temperature used for calculating the total signal is detected by the outside air temperature sensor 20. The value obtained is not immediately used as it is, but a value subjected to a predetermined process is used as the outside air temperature.
That is, the temperature detected by the outside air temperature sensor 20 is
When the vehicle changes from the stopped state to the running state, or conversely, changes from the running state to the stopped state, the vehicle continues to descend or ascend for a while and then becomes stable. For this reason, normally, when a change occurs in the running state of the vehicle as described above, a process is performed such that the detection signal of the outside temperature sensor 20 is not used as it is in the calculation of the total signal for a predetermined time. ing. The method of processing the outside air temperature described below particularly takes into account that the influence of the heat of the engine is not immediately eliminated when the vehicle changes from a stopped state to a running state, and that the outside air temperature sensor cannot detect an accurate temperature. Thus, such inconvenience is solved, and appropriate temperature data can be obtained by calculating the total signal.

Hereinafter, a specific description will be given with reference to FIG. 5. First, this series of control is performed by, for example, a comprehensive signal calculation process (for example, FIG. 2) in the main routine described above with reference to FIG. This is executed as one subroutine in step 200). When the control of this subroutine is started, first, it is determined whether the turning on (on) of the ignition switch 27 is the first time (see step 202 in FIG. 5), and the ignition switch 2 is turned on.
If it is determined that the input of No. 7 is the first time (in the case of YES), the process proceeds to step 204 described below,
If it is determined that the ignition switch 27 is not turned on for the first time (in the case of NO), step 2 to be described later is performed.
The process proceeds to step 10. In step 204, the temperature Tw of the engine cooling water is set to a predetermined value (for example, 50
° C), and when it is determined that the temperature is higher than the predetermined value (in the case of YES), it means that the vehicle is in a restarted state.
The value of the control outside air temperature memory value TaDM is set as the control outside air temperature TaD so that the value of the control outside air temperature memory value TaDM is used as aD, and the process returns to the main routine (see step 206 in FIG. 5). ). Here, the control outside air temperature memory value TaDM is a predetermined value stored in a storage area in the control unit 18 in advance. Here, the control outside air temperature memory value TaDM is used as the control outside air temperature TaD because the determination in step 202 is that the ignition switch 27 is turned on for the first time, and the determination in step 204 is that If it is determined that the temperature Tw of the engine cooling water is higher than a predetermined value, the vehicle has been restarted, and the detection of the outside air temperature by the outside air temperature sensor 20 is caused by the residual heat of the engine (not shown). This is because it is not easy to use the detection value of the outside air temperature sensor 20 as it is for calculating the total signal. It should be noted that the value of the control outside air temperature TaD is determined by the total signal calculation processing of the main routine (step 200 in FIG. 2).
) Is used in the above-described formula for calculating the total signal.

On the other hand, when it is determined in step 204 that the temperature Tw of the engine cooling water is not higher than the predetermined value (in the case of NO), the influence of the outside air temperature sensor 20 by the hot air of the engine is very small. Therefore, in order to use the outside air temperature Ta detected by the outside air temperature sensor 20 as the outside air temperature for control TaD, the value of the outside air temperature Ta is set to the outside air temperature for control TaD, and the process returns to the main routine (step in FIG. 5). 208).

On the other hand, in step 210, it is determined whether or not the control outside air temperature TaD matches the outside air temperature Ta detected by the outside air temperature sensor 20, and if it is determined that they match (in the case of YES). Is returned to the main routine because there is no inconvenience even if the outside air temperature is used as it is for calculating the total signal. If it is determined in step 210 that the control outside air temperature TaD does not match the outside air temperature Ta (NO), the next step 2 is executed.
The process proceeds to 12, and it is determined whether or not the outside air temperature Ta is higher than the control outside air temperature TaD. And the outside air temperature T
a is determined to be higher than the control outside air temperature TaD (Y
In the case of ES), it means that the outside air temperature Ta has risen before that, so the following step 21 is described.
4 while the outside air temperature Ta becomes the control outside air temperature Ta.
If it is determined that the detected outside air temperature is not higher than D (NO), it is determined that there is no inconvenience even if the detected outside air temperature is used as it is for the calculation of the total signal, and the process proceeds to step 208 described above. It will proceed.

In step 214, the vehicle speed sensor 2
5, it is determined whether the vehicle speed Sp detected is equal to or lower than a first predetermined vehicle speed (for example, 10 km / h) or higher than a second predetermined vehicle speed (for example, 20 km / h). As described above, the vehicle speed is determined here when the outside air temperature Ta is determined to be higher than the control outside air temperature TaD by the processing of the previous step 212, because the outside air temperature Ta increases as described above. Means that the outside air temperature Ta rises when the outside air temperature is actually rising and when the actual outside air temperature is not rising but the vehicle is in a stopped state or a running state close thereto. As a result, the outside air temperature sensor 20 may be thermally affected, and the detected value may increase apparently, and it is to determine which of them is detected. The reason why two judgment values of the vehicle speed Sp are provided so that so-called hysteresis occurs is to ensure the stability of operation.

If it is determined that the vehicle speed Sp is equal to or lower than a first predetermined vehicle speed (for example, 10 km / h) (this state is referred to as "B state" for convenience), step 228 described below is performed. While the vehicle speed is equal to or higher than a second predetermined vehicle speed (for example, 20 km / h).
In this case, the process proceeds to step 216 described later. Note that, when the vehicle speed is between the first predetermined vehicle speed and the second predetermined vehicle speed, the vehicle is set to the B state for convenience. Step 22
In 8, the value of the control outside air temperature TaD is fixed to the value at this point, and the process returns to the main routine. Here, the value of the control outside air temperature TaD is fixed by:
This step 228 is performed in the previous step 2
In 14, when it is determined that the vehicle is in the B state, in other words, when it is determined that the vehicle is in a stopped state, in such a case, the temperature detected by the outside air temperature sensor 20 is the heat radiation of the engine. This is because it is considered that there is a great possibility that the actual temperature of the outside air is detected, and the detected temperature is not suitable for use in calculating the total signal.

Next, at step 216, the vehicle speed S
It is determined whether or not p has changed from the B state to the A state for the first time. If it is determined that p is the first time (in the case of YES), the process proceeds to step 218 described below. If it is determined that this is not the first time (in the case of NO), the process proceeds to step 230. The reason why the processing is divided depending on whether the change from the B state to the A state is the first time is based on the following reason. In other words, the change from the B state to the A state can be regarded as a transition of the vehicle from the stopped state (a state close to the stopped state) to the running state, and the detection value T
a is increasing (in step 212, YE
In the case where the vehicle is changed from the stopped state to the running state in the state determined as S, the outside air temperature sensor 20 has the engine temperature lower than when the stopping and the running are repeated a plurality of times due to, for example, traffic congestion. , The temperature rises, and the value detected by the outside air temperature sensor 20 in this case is not suitable for use in the calculation of the total signal. 226
The reference temperature is used as the control outside air temperature TaD.

In step 230, the control outside air temperature TaD is updated at a predetermined update interval, and the process returns to the main routine. That is, the determination that the change from the B state to the A state is not the first time in the previous step 216 means that the vehicle changes from the stopped state to the running state a plurality of times, but in such a state, Since the outside air temperature sensor 20 is considered to detect almost the actual outside air temperature, in the embodiment of the present invention, the value of the control outside air temperature TaD is adjusted to the detected value of the outside air temperature sensor 20. Therefore, it is determined that the temperature is updated by 0.3 ° C. every 15 seconds.

On the other hand, in step 218, the vehicle speed Sp at a predetermined time ts set in advance is measured. Next, a change ΔT in the outside air temperature detected by the outside air temperature sensor 20 at the predetermined time ts is measured (FIG. 5).
Step 220). Then, the previous step 218
The average vehicle speed Spave will be calculated by the following equation using the measurement data in.

Spave = (Δt × Spt) / ts

Here, Δt is a time interval at which the vehicle speed Sp is taken into the control unit 18, that is, a sampling time (second), and Spt is a sampled vehicle speed. Next, the time constant α used in the process of step 226 described later is obtained as α = K1 × Spave (see step 224 in FIG. 5). here,
K1 is an operation constant. Then, based on these calculation results, the control outside air temperature TaD is updated by the following equation,
The process returns to the main routine (step 22 in FIG. 5).
6). In the calculation of the total signal in the main routine, the control outside air temperature TaD calculated by the following equation is used as the outside air temperature.

TaD = Ta− (K2 × ΔT) / EXP (−α × Δt)

Here, K2 is an arithmetic constant, EXP
Is an exponential function. The value obtained in this way is used as the control outside air temperature TaD in consideration of the fact that when the detection value of the outside air temperature sensor 20 changes due to the running of the vehicle, it increases and decreases exponentially. . The processing from step 218 to step 226 described above obtains a control outside air temperature correction process or an estimated value in consideration of the thermal effect on the outside air temperature sensor 20 when the vehicle changes from a stopped state to a running state, and calculates it. This can be said to be a process for setting the outside air temperature for control.

In the vehicle air conditioner according to the second aspect of the present invention, by executing step 202 in FIG. 5, the vehicle operating state determining means, the vehicle speed detecting means using the vehicle speed sensor 25, and the outside air temperature detecting means using the outside air temperature sensor 20 are performed. The means have each been realized. Steps 208, 210, 212, 214, 216, and 21 in FIG.
The execution of 8, 220, 222, 224, 226 and 228 realizes an outside air temperature updating unit.

Next, a second example of the method of processing the outside air temperature executed in the vehicle air conditioner shown in FIG. 1 will be described with reference to FIG. This outside air temperature treatment method
A delay process is performed on the detection value of the outside air temperature sensor 20, and various types of delay processes of this type have been proposed in the past, but provide more accurate delay processes.
As in the case of FIG. 5, the series of processes shown in FIG. 6 are performed before the calculation of the total signal is performed in the total signal calculation process (see step 200 in FIG. 2) in the main routine. This is executed as one subroutine. When the control of the subroutine is started, first, it is determined whether or not the outside air temperature Ta detected by the outside air temperature sensor 20 matches the value of the control outside air temperature TaD at this time (step 230 in FIG. 6). If it is determined that they match (in the case of YES), since the outside air temperature does not fluctuate, the following processing becomes unnecessary, and the process returns to the main routine.

On the other hand, if it is determined in step 230 that the outside air temperature Ta does not match the control outside air temperature TaD (NO), the outside air temperature Ta is higher than the control outside air temperature TaD. Is determined (see step 232 in FIG. 6), and the outside air temperature Ta becomes the control outside air temperature TaD.
If it is determined that it is not larger (in the case of NO),
Assuming that the outside air temperature Ta is falling, the control outside air temperature Ta
The downward update of the value of D is started at the earliest first predetermined update interval, and the process returns to the main routine (step 238 in FIG. 6). Here, as the first predetermined update interval, for example, various data such as the control outside air temperature TaD are processed as digital values in the control unit 18, so that if expressed as changes in the digital values, 1bit / 5sec, that is, 1bit at 5 second intervals
It is preferable to set the update interval so as to lower the temperature for one minute.

If it is determined in step 232 that the outside air temperature Ta is higher than the control outside air temperature TaD (YES), it is considered that the outside air temperature is increasing. Although it is necessary to update the value of the outside air temperature TaD to a high value, in order to make the amount of change at the time of the update different depending on the vehicle speed and the duration thereof,
First, it is determined whether the vehicle speed detected by the vehicle speed sensor 26 is higher than a predetermined vehicle speed (for example, 20 km / h) (see step 234 in FIG. 6). When it is determined that the vehicle speed detected by the vehicle speed sensor 26 is higher than the predetermined vehicle speed (in the case of YES), it is determined whether or not the vehicle speed has continued for a predetermined time (for example, 5 minutes). Is determined (see step 236 in FIG. 6), and if it is determined that the operation has continued for more than a predetermined time (for example, 5 minutes) (in the case of YES), the detection value of the outside air temperature sensor 20 is substantially equal to the actual value. Of the control outside air temperature TaD, the value of the control outside air temperature TaD is set to a relatively early second predetermined update interval (for example, 1
(bit / 15 sec), the ascending update is started, and the process returns to the main routine (see step 240 in FIG. 6).

On the other hand, if it is determined in step 234 that the vehicle speed detected by the vehicle speed sensor 26 is not higher than the predetermined vehicle speed (in the case of NO), the vehicle is traveling in a low speed state (for example, in the case of congestion) or It is considered that the vehicle is in a stopped state, and it is considered that the temperature of the outside air temperature sensor 20 is rising due to the influence of heat radiation from an engine (not shown). Therefore, the value of the control outside air temperature TaD is set to the current value. The update is stopped after being fixed (HOLD), and the process returns to the main routine (see step 242 in FIG. 6). If it is determined in the previous step 236 that the detected vehicle speed does not continue beyond the predetermined time (in the case of NO), traffic jam or idle stop occurs, and the outside air temperature sensor 20 Is considered to be affected by the heat generation of the engine, the value of the control outside air temperature TaD is set to the longest third predetermined update interval (for example, 1 bit / 120se).
The raising is started in c), and the process returns to the main routine (see step 244 in FIG. 6).

It should be noted that either of the above two outside air temperature processing methods may be used together with the above-described intake door switching control, or only the intake door switching control may be performed. Further, any of the above two outside air temperature processing methods may be performed without performing the intake door switching control.

In the vehicle air conditioner according to the third aspect of the present invention, the outside air temperature sensor 20 realizes the outside air temperature detecting means, and the vehicle speed sensor 25 realizes the vehicle speed detecting means. Step 2 in FIG.
The execution of steps 34 and 236 implements the clocking means, and the execution of steps 240 and 244 implements the outside air temperature updating means.

[0050]

As described above, according to the first aspect of the present invention, even after the engine is stopped, the air conditioned so far is used to adjust the opening degree of the intake door while taking into consideration the heating mode or the cooling mode. Since the circulation is performed while being changed, the decrease in the air conditioning feeling due to the stop of the engine is suppressed as much as possible, and the occurrence of dew condensation is suppressed as much as possible, especially in winter. Further, in a vehicle air conditioner having a conventional configuration, it is possible to realize a cost-effective device that can be realized by changing so-called software without requiring special so-called additional hardware. To play. According to the second invention, the detection value of the outside air temperature detecting means is corrected based on the amount of change in the detection value of the outside air temperature means and the vehicle speed detected by the vehicle speed detecting means. Even in the case where the means is thermally affected, it is possible to obtain appropriate outside air temperature data necessary for calculating the heat load, and therefore, appropriate air conditioning control can be realized. . Further, in a vehicle air conditioner having a conventional configuration, it is possible to realize a cost-effective device that can be realized by changing so-called software without requiring special so-called additional hardware. To play. further,
According to the third aspect, the update of the outside air temperature used for calculating the heat load is performed at time intervals corresponding to the duration of the vehicle speed. Therefore, the update condition of the outside air temperature is simply set to the vehicle speed. As compared with the conventional device, a value closer to the actual outside air temperature is obtained and the heat load is calculated, so that the air conditioning control more comfortable than before can be achieved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration example of a vehicle air conditioner used in an embodiment of the present invention.

FIG. 2 is a main flowchart showing a procedure of air conditioning control in the vehicle air conditioner shown in FIG.

FIG. 3 is a subroutine flowchart showing a procedure of intake door switching control in the embodiment of the present invention.

FIG. 4 is an explanatory diagram illustrating the concept of signal synthesis of a fluctuation signal and a fan signal.

FIG. 5 is a subroutine flowchart showing a procedure of a first outside air temperature processing method in the embodiment of the present invention.

FIG. 6 is a subroutine flowchart showing a procedure of a second outside air temperature processing method in the embodiment of the present invention.

[Explanation of symbols]

 2 ... outside air inlet 3 ... inside air inlet 4 ... intake door 6 ... evaporator 10 ... vent outlet 11 ... defrost outlet 12 ... foot outlet 13a to 13c ... mode door 18 ... control unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B60H 1/32 626 B60H 1/32 626B 626D

Claims (19)

[Claims] 1. An upstream side of an air-conditioning duct, the amount of inside air and the amount of outside air introduced into the air-conditioning duct are configured to be variable, and the temperature of the introduced air is adjusted so that the air can be blown into a vehicle compartment. An air-conditioning control method for a vehicle air-conditioning system, wherein the vehicle is in an idling stop state, the vehicle air-conditioning system is in an operating state, and the air-conditioning system is in a heating mode. If the temperature in the vehicle interior is lower than the first predetermined value, the evaporator substantially stops operating until the substantial temperature exceeds the first predetermined value, or the vehicle is in an idling stop state, and the vehicle air conditioner operates. Until a predetermined time elapses from the state, the intake door is set to the outside air while the predetermined time elapses or the substantial temperature of the evaporator exceeds a first predetermined value, Further, after the temperature of the engine cooling water falls below the third predetermined value, the amount of inside air introduced by the intake door is increased in accordance with the decrease in the temperature of the engine cooling water, and the amount of inside air introduced is increased in accordance with the increase in the amount of inside air introduced. ,
An air conditioning control method for a vehicle air conditioner, comprising: increasing an amount of air blown from a defrost outlet. 2. The vehicle is in an idling stop state, the vehicle air conditioner is in an operating state, the air conditioner is in a cooling mode, and the temperature in the vehicle compartment is reduced to a fourth level.
If the evaporator substantial temperature falls below the fifth predetermined value,
Alternatively, while the substantial temperature of the evaporator exceeds a fifth predetermined value and the cabin temperature is lower than the outside air temperature, the inside air introduction amount by the intake door is increased according to the cabin temperature, and the inside air is increased. While increasing the amount of air blown out from the vent outlet in accordance with the increase in the introduction amount, when the substantial temperature of the evaporator exceeds the fifth predetermined value, and when the vehicle interior temperature exceeds the outside air temperature, 2. The air conditioning control method according to claim 1, wherein the intake door is located at an outside air introduction position. 3. The air conditioner is in a cooling mode,
In the case where the substantial temperature of the evaporator exceeds the fifth predetermined value, and the temperature in the cabin exceeds the outside air temperature, and the intake door is set to the outside air introduction position, a fluctuation signal is generated, and in response to the fluctuation signal, 3. The air conditioning control method according to claim 2, wherein the amount of air blown into the vehicle compartment is controlled. 4. Based on various environmental factors including outside air temperature,
The outside air used for calculating the heat load in the vehicle air conditioner configured to calculate the heat load in the vehicle compartment and to adjust the temperature of the air blown into the vehicle compartment according to the calculated heat load. A method for processing a temperature, wherein when the detection value of an outside air temperature sensor increases and the vehicle is in a stopped state, updating of the outside air temperature used for calculating the heat load is stopped. If the detection value of the sensor rises and the vehicle is first changed from the stopped state to the running state after the start-up,
A method for processing an outside air temperature in a vehicle air conditioner, wherein the detection value of the outside air temperature sensor is corrected based on the amount of change in the detection value of the outside air temperature sensor and the vehicle speed, and the outside air temperature is updated based on the correction value. . 5. The method according to claim 4, wherein when the outside air temperature decreases, the outside air temperature is updated based on a detection value of an outside air temperature sensor. 6. A method of correcting a detection value of the outside air temperature sensor, comprising: measuring a vehicle speed for a predetermined sampling time Δt during a predetermined time ts; setting the measured vehicle speed to Spt;
The amount of change in the detection value of the outside air temperature sensor during the predetermined time ts is measured, and the measured value is defined as ΔT. From the sampling time Δt, the measured vehicle speed Spt, and the predetermined time ts, the average vehicle speed Spave is calculated as Spave = ( Δt × Spav
e) / ts, then the time constant is α, the first calculation constant is K1, and α
= K1 × Spave, and the correction value = Ta− (K2 × ΔT) / EXP (−α × Δt), where Ta is the detection value of the outside air temperature sensor, and K2 is the second calculation constant. The outside air temperature processing method in a vehicle air conditioner according to claim 4 or 5, wherein 7. Based on various environmental factors including outside air temperature,
The outside air used for calculating the heat load in the vehicle air conditioner configured to calculate the heat load in the vehicle compartment and to adjust the temperature of the air blown into the vehicle compartment according to the calculated heat load. A temperature processing method, wherein when the detection value of an outside air temperature sensor increases and the vehicle is in a running state, the outside air temperature is updated at a different update speed according to the duration of the running state. An outside air temperature processing method for a vehicle air conditioner, comprising: 8. The vehicle according to claim 7, wherein when the duration exceeds a predetermined value, the outside air temperature is updated at a higher update speed than when the duration is less than the predetermined value. An outside air temperature processing method in an air conditioner. 9. An upstream side of the air conditioning duct, the inside air introduction amount and the outside air introduction amount to the air conditioning duct are configured to be variable, and the temperature of the introduced air is adjusted so that the air can be blown into the vehicle interior. A vehicle operating state determining means for determining a driving state of a vehicle; a starting state determining means for determining whether or not the vehicle air conditioner is started; and the vehicle air conditioner. Air condition control means for determining the state of air conditioning control by the vehicle, vehicle interior temperature detecting means for detecting the temperature in the vehicle interior, evaporator temperature detecting means for detecting the substantial temperature of the evaporator, and detecting the temperature of the engine cooling water The cooling water temperature detecting means and the vehicle operating state determining means determine that the vehicle is in the idling stop state, and the starting state determining means determines that the vehicle is idle. It is determined that the device is in the activated state, and, in the case where the air-conditioning state determining means has determined that the heating mode, the detected value of the vehicle interior temperature detecting means has fallen below a predetermined vehicle interior temperature. When the evaporator temperature detection means determines that the substantial temperature of the evaporator has exceeded a predetermined value, and the cooling water temperature detection means determines that the engine cooling water temperature has fallen below a predetermined value. Increases the amount of inside air introduced by the intake door as the temperature of the engine cooling water decreases, while the vehicle operating state determining means determines that the vehicle is in the idling stop state, and the starting state determining means determines that the vehicle is idling. When the air conditioner is determined to be in the activated state, and the air conditioning state determination means determines that the air conditioner is in the cooling mode. It, the detection value of the vehicle interior temperature detection means is determined to have exceeded a predetermined cabin temperature, and
When the evaporator temperature detecting means determines that the substantial temperature of the evaporator has fallen below a predetermined value, an intake door control means for increasing the amount of inside air introduced by the intake door with an increase in vehicle interior temperature, An air conditioner for a vehicle, comprising: 10. An intake door control means, wherein the vehicle operating state determining means determines that the vehicle is in an idling stop state, and the starting state determining means determines that the vehicle air conditioner is in a started state, When the air-conditioning state determining means determines that the heating mode is selected, and when the evaporator temperature detecting means determines that the substantial temperature of the evaporator is lower than a predetermined value, the vehicle operating state determining means As a result, the intake air is introduced into the intake door until a predetermined time elapses from when it is determined that the vehicle is in the idling stop state, and when the activation state determination means determines that the vehicle air conditioner is in the activated state until a predetermined time elapses. 10. The air conditioner for a vehicle according to claim 9, wherein the air conditioner is a position. 11. An intake door control means including an outside air temperature detecting means for detecting an outside air temperature, wherein the vehicle operating state determining means determines that the vehicle is in the idling stop state, and the starting state determining means determines that the vehicle is in the idling stop state. It is determined that the air conditioner is in the activated state, and by the air conditioner
When it is determined that the air conditioner is in the cooling mode, the evaporator temperature detecting means determines that the substantial temperature of the evaporator exceeds a predetermined value, and the vehicle interior temperature detected by the vehicle interior temperature detecting means is the external air temperature. The vehicle air conditioner according to claim 10, wherein the intake door is set to the outside air introduction position when it is determined that the temperature is higher than the outside air temperature detected by the temperature detecting means. 12. When the air conditioning state determining means determines that the air conditioner is in the cooling mode, and the intake door control means increases the amount of inside air introduced by the intake door, the blowing mode is adjusted in accordance with the increase in the amount of inside air introduced. 2. A mode adjusting means for performing the following.
2. The vehicle air conditioner according to 1. 13. A blower provided on an upstream side of an evaporator, rotation setting means for determining a rotation state of the blower according to a heat load in a vehicle interior, and a rotation state of the blower set by the rotation setting means. A rotation control means for rotating the blower according to the air conditioner state determination means determines that the air conditioner is in the cooling mode, and the intake door control means sets a fluctuation signal when the intake door is set to the outside air introduction position. And fluctuation control means for changing the rotation of the blower by the rotation control means in response to the fluctuation signal, about a rotation state set by the rotation setting means. Item 13. The vehicle air conditioner according to Item 12. 14. A configuration in which a heat load in a vehicle compartment is calculated based on various environmental factors including an outside air temperature, and a temperature of air blown into the vehicle compartment is adjusted according to the calculated heat load. A vehicle operating condition determining means for determining a driving condition of the vehicle; a vehicle speed detecting device for detecting a vehicle speed; an outside air temperature detecting device for detecting an outside air temperature; By means, it is determined that the vehicle is in the idling state, it is determined from the detection result of the vehicle speed detection means that the vehicle has changed from the stopped state to the running state, and it is determined that the detection value of the outside air temperature detection means has increased. In this case, the detection value of the outside air temperature detection means is corrected based on the amount of change in the detection value of the outside air temperature means and the vehicle speed detected by the vehicle speed detection means, and the correction value of the outside air temperature New vehicle air-conditioning apparatus characterized by comprising comprises an outside air temperature updating means, the performing. 15. The correction of the detection value of the outside air temperature detecting means in the outside air temperature updating means includes inputting the output of the vehicle speed detecting means at every predetermined sampling time Δt during a predetermined time ts, and
The amount of change ΔT in the output value of the outside air temperature detecting means in s is calculated, one value of the vehicle speed input for each sampling time Δt is set to Spt, and the average vehicle speed Spave is calculated as Spave = Δt ×
Spt / Ts, and then the time constant is α, the first predetermined operation constant is K1, and the time constant α is α = K
1 × Spave, the detection value of the outside air temperature detecting means is Ta, the second predetermined operation constant is K2, and Ta
The value obtained as -K2 * [Delta] T / EXP (-[alpha] * [Delta] t) is used as a correction value.
5. The vehicle air conditioner according to 4. 16. The outside air temperature updating means, when it is determined that the vehicle is in a stopped state based on the detection value of the vehicle speed detection means, and when it is determined that the detection value of the outside air temperature detection means is increasing, The vehicle air conditioner according to claim 15, wherein updating of the outside air temperature used for calculating the load is stopped. 17. The outside air temperature updating unit updates the detected value of the outside air temperature detecting unit as an outside air temperature used for calculating a heat load when it is determined that the detected value of the outside air temperature detecting unit is falling. 17. The vehicle air conditioner according to claim 16, wherein the air conditioning is performed. 18. A configuration in which a heat load in a vehicle compartment is calculated based on various environmental factors including an outside air temperature, and a temperature of air blown into the vehicle compartment is adjusted according to the calculated heat load. An air conditioner for a vehicle, comprising: an outside air temperature detecting means for detecting an outside air temperature; a vehicle speed detecting means for detecting a vehicle speed; and a case where a detected value of the vehicle speed detecting means exceeds a predetermined value. Time measuring means for measuring, when the detected value of the outside air temperature detecting means is determined to be rising, and when it is determined that the detected value of the vehicle speed detecting means exceeds a predetermined value, detection of the outside air temperature detecting means Outside air temperature updating means for updating the outside air temperature used for the calculation of the heat load using a value at a time interval corresponding to the duration of the vehicle speed exceeding the predetermined value measured by the time measuring means. To have Vehicle air conditioner according to claim. 19. The outside air temperature updating means, when the duration measured by the timing means exceeds a predetermined duration, as compared with the case where the duration measured by the timing means falls below the predetermined duration. 19. The vehicle air conditioner according to claim 18, wherein the outside air temperature is updated at short time intervals.