JP2002234330A - Vehicular air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an appreciable feeling of air conditioning in two air- conditioning zones by executing fine air-conditioning control even when a blowout mode of one air-conditioning system and a blowout mode of the other air- conditioning system differ from each other, in a vehicular air conditioner designed to have the two or first and second air-conditioning systems, share a blower between the air-conditioning systems and vary the temperature and blowout mode of conditioned air independently. SOLUTION: A standard control pattern of the blower is selected according to a requested operation mode to determine the air quantity of the blower. A control pattern of an air distributing door is selected according to the requested operation mode and the blowout mode of each air-conditioning system to determine the position of the air distributing door. The air quantity is corrected according to the blowout mode of each air-conditioning system. Upon a request for an operation mode in a start of heating or upon a request for an operation mode allowing air conditioning compensation for solar radiation, appropriate air conditioning can be provided for each air-conditioning zone.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner used for a vehicle, and more particularly, to an air conditioner having two air conditioning systems that share a common blower, in which the temperature of the conditioned air and the blowing mode are independent in each air conditioning system. The present invention relates to an air conditioner for a vehicle in which the air distribution ratio of the conditioned air supplied from each air conditioning system can be changed by an air distribution door.

[0002]

2. Description of the Related Art A conventional air conditioner of this type is disclosed in Japanese Patent No. 2550823. This is equipped with two air conditioning systems that independently control the temperature of the air conditioning zone on the driver's seat side and the air conditioning zone on the passenger's seat side. The air conditioning system air-conditions one of the air conditioning zones due to solar radiation or the like. Is set to vent mode,
When the outlet mode of the air conditioning system that airs the other air conditioning zone is set to the foot mode for heating, the outlet mode of one of the air conditioning systems is maintained and the outlet mode of the other air conditioning system is set to the bi-level mode. By changing the air-conditioning system, deterioration of the air-conditioning feeling caused by the close proximity of the air outlets of both air-conditioning systems is avoided. That is, interference with the air conditioning system on the priority side is reduced to obtain a comfortable air conditioning feeling, and the air conditioning system on the non-priority side is set to the bi-level mode, so that cool air is blown to the upper body and warm air is blown to the feet. By supplying each wind, an increase in discomfort is suppressed. Further, the air conditioner disclosed in the publication has a configuration in which a blower is shared by two air conditioning systems and the temperature of the conditioned air can be independently changed by each air conditioning system.

[0003]

By the way, the air flow control by the automatic air conditioner is controlled based on a reference signal such as a total signal or a target blow-out temperature. At the time of steady operation when the air volume is increased and the cabin temperature almost matches the set temperature,
The air volume is set to the minimum air volume (LOW air volume) (in the state where the blower voltage shown in FIG. 6 of the above publication is minimized). In such a steady operation, even if an attempt is made to correct the air flow rate by reflecting the influence of solar radiation on the total signal or the target air temperature, the air volume cannot be reliably increased (the total signal or the target air temperature). Even if the temperature fluctuates, the LOW air volume may be maintained), which is disadvantageous in that the feeling of warmth due to solar radiation cannot be reliably removed.
For this reason, a control has been considered in which the minimum airflow (LOW airflow) of the blower is forcibly increased when the amount of solar radiation increases during the steady operation.

However, such control of increasing the LOW air volume is performed by a common blower in each air conditioning system, and the blowing mode of one air conditioning system is set to the foot mode, while the blowing mode of the other air conditioning system is set to the foot mode. When used in the vent mode or the bi-level mode as described in the above-mentioned publication, the air-conditioning zone on the side where sunlight is irradiated can provide a comfortable air-conditioning feeling by increasing the amount of blown air. On the side set in the foot mode where the touch is not applied, excessive warm air is blown to the feet, and there is a disadvantage that the feet become too hot.

When the engine cooling water is used as a heat source for heating, since the temperature of the engine cooling water is low at the beginning of heating, the air flow of the blower is suppressed to a low air flow until the temperature of the cooling water increases. Like that. In such a control at the time of starting heating, when the blowing mode of one air conditioning system is set to the vent mode or the bi-level mode and the blowing mode of the other air conditioning system is set to the foot mode, the mode is set to the foot mode. The blowing of the cold air is suppressed to the air conditioning zone on the side where the air conditioning is performed, so that an unpleasant feeling of air conditioning can be prevented, but the air conditioning zone on the side set to the vent mode or the bi-level mode is However, there is an inconvenience that the required air volume cannot be obtained by suppressing the air volume.

Therefore, in the present invention, the blower is shared by the two air conditioning systems, and the temperature of the conditioned air and the blowing mode can be independently changed for each air conditioning system. In a vehicle air conditioner that can change a quantitative ratio of supplied conditioned air, fine air conditioning control is performed even when the blowing mode of one air conditioning system is different from the blowing mode of the other air conditioning system. It is an object of the present invention to provide an air conditioner for a vehicle which can provide a good air conditioning feeling to both air conditioning zones.

[0007]

To achieve the above object, an air conditioner for a vehicle according to the present invention comprises a lower air outlet for supplying conditioned air below a first air conditioning zone in a vehicle compartment and an upper air outlet. A first air-conditioning system having an upper air outlet for supplying air-conditioned air to the vehicle, a lower air outlet for supplying air-conditioned air below the second air-conditioning zone in the vehicle interior, and an upper air outlet for supplying air-conditioned air upward. And a second air-conditioning system provided with the first and second air conditioners.
The air conditioning system has a common blower, each air conditioning system has means for independently changing the temperature of the conditioned air and the blowing mode, and quantitatively dividing the conditioned air supplied from each air conditioning system. In a configuration in which the matching can be changed by the air distribution door, an operation mode determination unit that determines a requested operation mode, a first blowout mode determination unit that determines a blowout mode of the first air conditioning system, and a second blowout mode determination unit. A second blow mode determining means for determining a blow mode of the air conditioning system, and a flow rate determining means for determining a flow rate of the blower by selecting a reference control pattern of the blower based on a determination result by the operation mode determining means. Selecting a control pattern of the air distribution door based on a result of the determination by the operation mode determining means and a result of the determination by the first and second blowout mode determining means; It is characterized by comprising air distribution determining means for determining a position, and air flow correcting means for correcting the air flow determined by the air flow determining means based on the determination results by the first and second blowing mode determining means. (Claim 1).

[0008] Therefore, a control pattern to be a reference of the blower is selected by the air flow rate determining means based on the determination result by the operation mode determining means, and the air flow rate of the blower is determined from the control pattern. And the control pattern of the air distribution door is selected based on the determination result by the first and second blowout mode determination means, and the position of the air distribution door is determined from the control pattern. Since the air volume of the blower is corrected based on the determination result of the second blowout mode determination means, fine control can be performed.

As a more specific mode, the operation mode determining means includes means for determining whether or not there is a request for an operation mode at the time of heating startup. And the first and second blowout mode determination means determine that the blowout mode of one of the air conditioning systems is a blowout mode in which at least the lower blowout port is opened, and that the blowout mode of the other air conditioning system is the upper blowout mode. If it is determined that the blowing mode is such that only the exit is opened,
The air flow determining means selects a control pattern for suppressing an increase in the air flow at the time of starting heating to determine the air flow of the blower, and the air distribution determining means changes the position of the air distribution door to the air-conditioning air supplied from the other air conditioning system. Is determined based on a control pattern that sets a large proportion of the amount of air, and the air volume correction means determines the air volume of the blower based on the control pattern that suppresses an increase in the air volume at the time of starting the heating. A configuration may be adopted in which the air volume is corrected to an air volume between the air volume determined based on the control pattern required in relation to the heat load of the air conditioning zone to be air-conditioned by the air conditioning system (claim 2).

With such a configuration, there is a demand for an operation mode at the time of heating startup, and the air outlet mode of one air conditioning system is an air outlet mode in which at least the lower air outlet is opened, and the air outlet mode of the other air conditioning system is provided. Is a blow mode in which only the upper air outlet is opened, a control pattern for suppressing an increase in the air flow is selected, and the quantitative ratio of the conditioned air supplied from the other air conditioning system is increased. , The air volume of the blower
It is set to an air volume between an air volume determined by a control pattern that suppresses an increase in air volume at the time of heating activation and an air volume determined by a control pattern required in relation to a heat load of an air conditioning zone to be air-conditioned by the other air conditioning system. Therefore, the supply airflow can be made appropriate for each of the air-conditioning zone in which it is not desired to increase the airflow at the time of starting heating and the air-conditioning zone in which it is not necessary to suppress the increase in the airflow.

That is, even when the heating is started, the conditioned air from the air conditioning system set in the blowout mode in which only the upper air outlet is opened does not need warm air, so that the amount of airflow increases when the heating is started. Is suppressed, the conditioned air from the air conditioning system that opens only the upper air outlet becomes insufficient, and the air flow of the air blower is set to the blowing mode that opens only the upper air outlet. According to the request, the supply air volume from the air conditioning system that opens the lower outlet is too large, so the air distribution system sets the air outlet system that is set to the outlet mode that opens only the upper outlet. By increasing the air distribution volume and correcting the air volume of the blower to an intermediate air volume required by each air conditioning system, a comfortable air conditioning feeling is not impaired on either side. Door will be able to.

In addition, the operation mode determining means includes means for determining whether or not there is a request for an operation mode permitting air conditioning correction by solar radiation. And the first and second mode determination means determine that one of the air conditioning systems has a blowing mode in which at least the upper air outlet is opened and the other air conditioning system has a lower blowing mode. When it is determined that the mode is the blowout mode in which only the outlet is opened, the airflow determining means selects a control pattern requested in relation to the heat load of each air conditioning zone, determines the airflow of the blower, and The determining means determines the position of the air distribution door based on a control pattern that sets a large proportion of the conditioned air supplied from one of the air conditioning systems, and Thus, the air flow of the blower is formed by correcting the air flow determined based on the control pattern required in relation to the heat load of each air conditioning zone and the control pattern in accordance with the amount of solar radiation. A configuration may be adopted in which the airflow is corrected to an airflow between the airflow determined based on the control pattern (claim 3).

With such a configuration, there is a demand for an operation mode that allows air conditioning correction by solar radiation, and the blowing mode of one air conditioning system is a blowing mode in which at least the upper air outlet is opened, and the other air conditioning system has a blowing mode. When the blowing mode is a blowing mode in which only the lower air outlet is opened, a control pattern required in relation to the heat load of each air conditioning zone is selected, and then supplied from one air conditioning system. The proportion of the conditioned air becomes large, and the air flow of the blower is determined based on the control pattern required in relation to the heat load of each air conditioning zone. Since the air volume is set to the air volume between the air volume determined based on the control pattern formed by adding the correction according to the size, the air conditioning zone where air conditioning correction by solar radiation is desired and the air volume from the feet For each conditioning zone unwanted large, it is possible to assume the supply air volume suitable.

That is, even at the time of air conditioning correction by solar radiation,
It is not necessary to increase the conditioned air from the air conditioning system that is set to the blowout mode that opens only the lower outlet, so if the airflow increases during air conditioning correction by solar radiation, the air conditioner switches to the blowout mode that opens only the lower outlet. The air-conditioning air from the air-conditioning system that has been set increases despite the fact that there is no request to increase the air flow, giving an excessive sense of temperature control.The air flow of the blower is opened only at the lower outlet. In accordance with the requirements of the air conditioning system that is set to the blow mode, the air supply from the air conditioning system that opens the upper air outlet is insufficient, and it is not possible to remove the thermal sensation due to solar radiation. By adjusting so as to increase the air distribution from the air conditioning system that is set to the blowing mode in which the upper air outlet is opened at least, and to adjust the air volume of the blower to an intermediate air volume of the air volume required by each air conditioning system. By positive to also becomes possible to make is not compromised comfortable air-conditioning feeling in either side.

In the above, the blow mode in which the lower blow port is at least opened is a foot mode or a bi-level mode, and the blow mode in which the upper blow port is at least opened is a vent mode or a bi-level mode. Mode (claim 5). Further, in the vehicle air conditioner as described above, any different air conditioning zone in the vehicle interior, for example, the first air conditioning zone is a right seat side (driver seat side) air conditioning zone, and the second air conditioning zone is a left air conditioning zone. This is useful, for example, when the air conditioning zone is on the seat side (passenger seat side).

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, there are two air conditioning systems which are mounted on a vehicle and independently control the air conditioning of a right seat side air conditioning zone (driver seat side air conditioning zone) and a left seat side air conditioning zone (passenger seat side air conditioning zone) of the passenger compartment. The illustrated air conditioner is shown.

This air conditioner has an intake switching device 4 provided with an inside air inlet 2 and an outside air inlet 3 at the most upstream side of the air conditioning duct 1, and the introduction ratio of the inside air and the outside air is controlled by the intake door 5. It is to be adjusted. A blower 7 rotated by a motor 6 is provided in the air-conditioning case 1 so as to face the inlet, and the rotation of the blower 7 sucks air from the inlet and sends it to the downstream side by pressure.

An evaporator 8 is disposed downstream of the blower 7. The evaporator 8 is connected to the compressor 1 to which power from an engine 9 is transmitted via an electromagnetic clutch 10.
1 and a refrigeration cycle constituted by pipe connection with a condenser, an expansion valve, and the like (not shown). A refrigerant is supplied by the operation of the compressor 11, and the passing air is cooled.

The downstream side of the evaporator 8 inside the air conditioning case is branched into a right-seat shunt 12 and a left-seat shunt 13, and each shunt is provided with a heater core 14 and a heater core 1
Mix doors 15, 16 for adjusting the amount of air passing through 4.
And are arranged.

In this configuration example, the right-seat side shunt 12 and the left-seat side shunt 13 are defined by a partition wall 17, and the evaporator 8 and the heater core 14 are common to both shunts. . The evaporator 8 is provided so as to block the entire passage cross section of the air-conditioning case 1, and the heater core 14 is provided so as to block substantially half of the passage cross section of each shunt. The mixing doors 15 and 16 range from a full hot position (opening degree 100%) for guiding all air passing through the evaporator 8 to the heater core 14 to a full cool position (opening degree 0%) for bypassing the heater core 14 for all air. To rotate over.

Downstream of the heater core 14 in the right seat shunt 12, a defrost outlet 18 for blowing temperature-controlled air along the windshield in the right seat air conditioning zone of the passenger compartment.
a, a vent outlet (corresponding to an upper outlet) 18b for blowing the conditioned air upward, and a foot outlet (corresponding to the lower outlet) 18c for discharging the conditioned air downward are provided. Downstream from the heater core 14 of the seat side shunt 13, a defrost air outlet 19 a for blowing temperature-controlled air along a windshield and a vent for blowing temperature-controlled air upward in a left-side air conditioning zone of the vehicle. Outlet (equivalent to upper outlet) 19b
And a foot outlet (corresponding to a lower outlet) 19c for blowing temperature-controlled air downward, and each outlet is provided with a mode door (differential doors 20a, 21a, vent door 20).
b, 21b, foot doors 20c, 21c), the opening amount is adjusted. On the upstream side of the evaporator 8, there is provided an air distribution door 22 that distributes air pressure-fed from the blower 7 to each shunt via the evaporator 8. Here, the air distribution door has an opening of 50% at a position where the air distribution ratio to each shunt is 1: 1.

It should be noted that the right and left seat side mixed doors 15,
16 is an actuator (R MIX ACT, L MIX ACT) 2
3 and 24, respectively, and the intake door 5
Are driven by an actuator (INTAKE ACT) 25, and the right mode door (differential door 20a, vent door 20b, foot door 20c) and the left mode door (differential door 21a, vent door 21b, foot door 21c).
Are actuators (R MODE ACT, L MODE ACT) 26,
27 are respectively driven. The air distribution door 22 includes an actuator (air distribution door ACT) 2.
8 to be driven.

The actuators for driving the various doors described above, the electromagnetic clutch 10 of the compressor 11, the motor 6 of the blower 7, and the like are controlled based on output signals from the control unit 30.

The control unit 30 includes a central processing unit (CPU) (not shown) and a read-only memory (RO).
M), a random access memory (RAM), an input / output port (I / O), etc., and various doors (intake door 5, air mix doors 15, 16 and mode door 20).
a, 21a, 20b, 21b, 20c, 21c, the actuators 23 to 28 for driving the air distribution doors 22), the electromagnetic clutch 10 of the compressor 11, the drive circuit for driving and controlling the motor 6 of the blower 7, and the like. , An indoor temperature sensor 31, an outside air temperature sensor 32, a solar radiation sensor 33 having a right solar radiation sensor 33a for detecting the amount of solar radiation on the right side of the vehicle and a left solar radiation sensor 33b for detecting the amount of solar radiation on the left side of the vehicle, and the temperature of the engine cooling water. A signal from a water temperature sensor 34 to be detected, the evaporator 8 or a post-evaporation sensor 35 for detecting the temperature of the air passing through the evaporator 8 is input.

Further, signals and the like from the operation panel 36 are input to the control unit 30. The operation panel 36 includes an AUTO switch 37 and an OFF switch 3 for setting each air conditioner to an OFF mode.
8. A DEF switch 39 for setting the air-conditioning system to a defrost mode, a dual switch 40 for independently controlling the temperature of the right and left seats in the vehicle compartment, and a right-side air-conditioning mode. Vent mode in which only vent outlet 18b is opened, bilevel mode in which vent outlet 18b and foot outlet 18c are opened, foot outlet 1
MODE switch 41, FAN switch 42 for setting any one of the foot modes in which only 8c is opened,
A / C switch 43 for instructing ON / OFF of compressor 11, REC switch 4 for setting the suction mode to inside air circulation mode (REC) or outside air introduction mode (FRESH)
4. The outlet mode of the left seat side air conditioning system is a vent mode in which only the vent outlet 19b is opened, a bi-level mode in which the vent outlet 19b and the foot outlet 19c are opened, and a foot mode in which only the foot outlet 19c is opened. A MODE switch 45 for setting one of the modes is provided.
Further, an up / down switch 46a, 46b of a right seat temperature setting device 46 for setting a target temperature of the right seat air conditioning zone.
And an up / down switch 47a, 47b of a left seat temperature setting device 47 for setting a target temperature of the left seat air conditioning zone, and a target temperature of each air conditioning zone set by each up / down switch. , The air blowing capacity set by the FAN switch 42, the right and left seat side blowing modes set by the MODE switches 41 and 45, the suction mode set by the REC switch 44, and the like are provided at the center of the panel. It is displayed on the display unit 48.

Then, the control unit 30
Various input signals are processed according to a predetermined program given to the OM or the RAM, and the air blowing capacity, the suction mode, the blowing mode are switched, the compressor 11 is turned on and off, and the air mix doors 15, 16 and the air distribution door 22 are opened. Is controlled.

FIG. 2 is a flowchart showing an example of air conditioning control by the control unit 30. Hereinafter, an example of air conditioning control operation will be described with reference to this flowchart.

After the ignition unit is turned on and the engine is started, the control unit 30 inputs signals from the various sensors and the operation panel 36 described above (step 50), turns on the ignition switch, and executes the processing according to this flow. It is determined whether it is the first time (step 52). If it is determined in step 52 that this is the first time, initialization such as resetting various flags is performed (step 54). Thereafter, it is determined whether a predetermined check operation has been performed and a request for self-diagnosis has been made. Judgment (step 56), and if there is a request for self-diagnosis,
It is determined whether or not an operation for canceling the self-diagnosis has been performed (step 58). Until the cancel operation is performed, failure of the display function or various sensors, operation of the output device, abnormality of the output system (blower, actuator, compressor, etc.). A self-diagnosis is performed to determine whether or not there is (Step 60).

Then, in step 52, if the process according to this flow is not the first time after the ignition switch is turned on, the check operation is performed for the first time but the check operation is not performed, or the release operation is performed after the check operation is performed. In the case of the above, each subroutine processing of steps 62 to 80 (the outside air temperature delay processing of step 62, the insolation correction calculation processing of step 64, the insolation correction delay processing of step 66, the total signal calculation processing of step 68, the step 7)
0 mix door control processing, blower control processing of step 72, mode door control processing of step 74, step 7
The intake door control process of No. 6, the compressor control process of Step 78, and the air distribution door control process of Step 80 are performed, and thereafter, the process returns to Step 50, and the above-described process is repeatedly performed.

In the outside air temperature delay processing in step 62, it is necessary to prevent the outside air temperature sensor 32 from detecting a temperature higher than the original outside air temperature due to the influence of engine waste heat during traffic jam or idling operation. When an increase is detected, the output signal from the outside air temperature sensor 32 is delayed.

In the insolation correction calculation process in step 64, the insolation direction is calculated based on the output signal from the insolation sensor 33, and the average amount of insolation calculated based on the outputs from the right insolation sensor 33a and the left insolation sensor 33b is calculated. A process of allocating to the right seat side and the left seat side according to the solar radiation direction is performed.

In the insolation correction delay processing in step 66, since the change in the sensible temperature is delayed with respect to the change in the insolation, the right side obtained in step 64 to perform control in accordance with the actual change in the sensible temperature. The control-side right solar radiation correction amount QSDR and the control left-side solar radiation correction amount QSDL are calculated by delaying the amount of solar radiation on the seat side and the amount of solar radiation on the left seat side.

As shown in FIG. 3, in the total signal calculation process performed in step 68, a total signal is calculated in step 82 and a mode control total signal for controlling the mode door is generated in step 84. Calculate.
That is, in the total signal calculation processing in step 82, the vehicle interior temperature Tr, the control outside air temperature TaD, the control right-seat side solar radiation correction amount QSDR, and the outside-air corrected right-seat side set temperature T'SETR
Is used as a parameter to calculate a right-seat total signal TR related to the right-hand side heat load based on the following equation (1) to obtain a vehicle interior temperature Tr, a control outside air temperature TaD, and a control left-seat side solar radiation correction amount QSDL. Using the left-seat side set temperature T'SETL corrected for outside air as a parameter, a left-seat side total signal TL relating to the left-seat side heat load is calculated based on the following equation (2).

[0034]

(Equation 1)

[0035]

(Equation 2)

Here, KA is an outside air gain, Ks is a solar radiation gain, KR is a right seat side set gain, KL is a left seat side set gain, and a right seat side set temperature T'SETR corrected for outside air is:
The correction term αR determined in relation to the control outside air temperature TaD shown in FIG. 4 is added to the right seat side set temperature TSETR to obtain T′SET.
R = TSETR + αR, and the outside-air-corrected left-seat side set temperature T′SETL is obtained by setting the correction term αL determined in relation to the control outside-air temperature TaD shown in FIG. T'SETL = TSETL + α in consideration of temperature TSETL
It is calculated by L. It should be noted that the greater the value of these integrated signals TR and TL, the greater the cooling load, and the smaller the value, the greater the heating load.

Further, in the calculation of the mode control integrated signal in step 84, the right seat side mode control integrated signal TR is calculated from the right seat side integrated signal TR calculated in step 82 and the control right seat side solar radiation correction amount QSDR. TMR is calculated based on the following equation (3), and the left seat mode control total signal (TML) is calculated based on the left seat side total signal (TL) and the control left seat side solar radiation correction amount (QSDL) based on the following equation (4). I do. Here, K's is a solar radiation gain specifically set for mode control determined in relation to the average amount of solar radiation Qs, and K's is set to be larger as Qs becomes larger.

[0038]

(Equation 3)

[0039]

(Equation 4)

After the above-described calculation processing of the total signal, in the mixed door control processing of step 70,
The right-seat target outlet temperature is calculated from the right-seat total signal TR calculated in step 68, the right-seat mix door 15 is controlled so as to obtain the right-seat target outlet temperature, and the calculation is performed in step 68. A left-seat-side target blow-out temperature is calculated from the left-seat-side total signal TL, and a process of controlling the left-seat side mix door 16 so as to obtain the left-seat-side target blowout temperature is performed. In
A process for controlling the rotation speed of the blower 7, that is, the air volume, is performed in accordance with the requested operation mode, the blow mode of the left and right air conditioning systems, and the like. Processing for controlling the blow-out mode so as to obtain the control pattern shown in FIG. 5 requested by the heat load on the left seat side, that is, the right-side mode control integrated signal T
Average value (TMR) of MR and total signal TML for left seat side mode control
+ TML) / 2, and set the blowing mode based on (TMR +
When TML) / 2 is large, the blowout mode is set to the vent mode, and as the size decreases, the bi-level mode and the foot mode are set.

In the intake door control in step 76, the suction mode is controlled so as to obtain the control pattern shown in FIG. 6 required by the heat load on the right seat and the heat load on the left seat. The suction mode is set based on the average value (TR + TL) / 2 of the right seat total signal TR and the left seat total signal TL. If (TR + TL) / 2 is large, the suction mode is set to the internal air circulation. MI mode that mixes and introduces inside and outside air as the size decreases
A process for setting each of the X mode and the FRESH mode in which outside air is introduced is performed.

Further, in the compressor control of step 78, if the blower 7 is in the stopped state, the compressor 11 is stopped, and the compressor 11 is operated or stopped based on the operation of the AUTO switch 37, the A / C switch 43 and the like. At the same time, processing such as on / off control of the compressor 11 is performed in order to prevent the freezing of the evaporator 8, and in the air distribution door control of step 80, according to the required operation mode, the air blow mode of the left and right air conditioning systems, etc. A process for controlling the position of the air distribution door 22 is performed.

FIG. 7 shows a specific example of the blower control in step 72.
The AUTO switch 37 is turned on and the blower 7 is
Whether there is a request to perform TO control, whether there is a request to turn off the blower 7 by turning off the switch 38, and a request to operate the FAN switch 42 to manually set the blower 7 as requested by the operator. Is determined (steps 90 to 94), and when it is determined that the OFF switch 38 is turned on, the OFF control for stopping the blower 7 is performed (step 96), and the FAN switch 4 is turned off.
If it is determined that the blower 2 has been operated, manual control for operating the blower 7 in a state set by the operator is performed (step 98). Further, when the AUTO switch 37 is turned on and there is a request to perform AUTO control of the blower 7, or when the AUTO switch 37 and the OF switch are
When it is determined that the F switch 38 and the FAN switch 42 are not operated, a determination process for selecting a requested operation mode is performed in step 100 and subsequent steps.

That is, in step 100, it is determined whether the heating start control has been completed, in step 102, whether the cooling start control has been completed, and in step 104, whether the heating start condition has been satisfied. Step 106
In step 108, it is determined whether or not the cooling start condition is satisfied, in step 108, whether or not the vehicle is in the OFF control mode, and in step 110, whether or not the vehicle is in the MANUAL control mode. Is determined by whether or not is standing, step 100
If it is determined that the heating start control has been completed in step, or if it has been determined in step 102 that the cooling start control has been completed, the processing shifts to AUTO control for adjusting the amount of air blow based on the total signal, the amount of solar radiation, and the like. (Step 11
2) If it is determined in step 104 that the heating start condition is satisfied, the process shifts to heating start control in which the increase in the air volume is suppressed based on the heating capacity of the heater core 14, that is, the temperature of the engine cooling water. (Step 114),
If it is determined in step 106 that the cooling start condition has been satisfied, the flow shifts to cooling start control in which the blower 7 is stopped for a predetermined period of time and the air is not blown until the evaporator 8 is cooled (step 116). .

If it is determined in step 108 that the state is the OFF control mode, the OFF control is maintained (step 118). If it is determined in step 110 that the state is the MANUAL control mode, , Maintain MANUAL control (step 120).

If it is determined that there is no request for any of the control modes as a result of the above-described processing for switching the blower control mode, it is determined in FIG. 8 whether the condition for heating activation or the condition for cooling activation is satisfied. If it is determined that none of the activation conditions is satisfied, the AUTO control is performed.

Here, the heating start condition is determined in step 122.
In at least one of the right seat temperature setting device 46 and the left seat temperature setting device 47, the setting temperature is set to the minimum temperature (M
AX / C setting), in step 124, whether or not both the right-side air conditioning system and the left-side air conditioning system are in vent mode is determined in step 126. In step 128, it is determined whether the blow-off mode has been manually set to the differential mode, and in step 128, it is determined whether the temperature Tw of the engine cooling water is lower than a predetermined temperature α.
2, the temperature setters on either side have the lowest temperature (MA
X / C) is determined not to have been set, and step 12
4, it is determined that the air-conditioning mode of both air-conditioning systems is not the vent mode, and
The condition is satisfied when it is determined that the F switch 39 has been pressed and the blowing mode of both air conditioning systems has not been set to the differential mode, and that it is determined in step 128 that the water temperature Tw is lower than the predetermined temperature α. In this case, in step 130, a flag indicating the establishment of the heating start condition is set.

On the other hand, if it is determined in step 122 that one of the set temperatures is set to the minimum temperature (MAX / C), the flow proceeds to step 124 in which the blowing mode of the air conditioning system for the left and right seats is changed. If both are determined to be in the vent mode, at step 126, D
If it is determined that the EF switch 39 has been pressed and the blowing mode of both air conditioning systems has been set to the differential mode, or if it is determined in step 128 that the water temperature Tw is equal to or higher than the predetermined temperature α, then in step 132 It is determined whether or not the process of this step is the first time since the ignition switch is turned on, and whether or not it is the first time that the AUTO switch 37 is turned on from the state where the blower 7 is stopped in step 134. Is determined, it is determined that the process of step 132 is the first time after the ignition switch is turned on, or even if the process of step 132 is not the first time after the ignition switch is turned on, the blower 7 is stopped. AUTO from state
If it is determined that it is the first time to shift to, the cooling start condition is determined. Here, the cooling start condition is determined in step 136.
In step 138, it is determined whether or not the temperature Te detected by the post-evaporation sensor 35 is higher than a predetermined temperature (for example, 20 ° C.). In step 138, the left and right integrated signals (TR, TL) are compared. It is determined whether the larger one is larger than the predetermined value β, and when it is determined that Te is higher than the predetermined temperature and the larger total signal is larger than the low value β. It holds,
In this case, in step 140, a flag indicating the establishment of the cooling start condition is set.

In step 134, the blower 7
Is not the first time to shift to AUTO from the stopped state, if it is determined in step 136 that Te is equal to or lower than a predetermined temperature, or if in step 138 the left and right integrated signals (TR, TL) If it is determined that the larger of ()) is equal to or smaller than the predetermined value β, the AUTO control of steps 142 to 156 is performed.

This AUTO control is performed by the right seat side temperature setting device 4.
6 and whether the temperature set by the left seat side temperature setting device 47 is the lowest temperature setting (MAX / C setting), or both are the highest temperature setting (MAX / H setting). It is determined whether or not each of the set temperatures is the lowest temperature setting (MAX / C setting), or if any of the set temperatures is the highest temperature setting (MAX / C). H setting), the duty ratio of the voltage applied to the motor 6 is set to 100.
%, The blower 7 is set to the maximum air volume (MAX HI) (step 146). If the temperature is set other than that, as shown by the solid line in FIG. 9 requested by the relationship with the heat load of each air conditioning zone. An appropriate control pattern (a control pattern set in relation to the left and right integrated signals) is selected, and the air volume of the blower 7 is determined so as to obtain this control pattern (step 148). That is, the average value (TR + TL) of the right seat side total signal TR and the left seat side total signal TL /
The duty ratio of the voltage applied to the motor 6 is determined on the basis of the equation (2). When the absolute value of (TR + TL) / 2 is large, the cooling load or the heating load is large, and the air volume of the blower 7 is set to the maximum air volume. (The duty ratio of the voltage applied to the motor 6 is 100%), and the air volume is set to the minimum air volume (LOW air volume) in the middle range where the absolute value of (TR + TL) / 2 where the cooling load or the heating load is small (TR + TL) / 2 is small. The duty ratio of the voltage applied to the blower 7 is reduced), and the air flow of the blower 7 is controlled so as to continuously increase from the intermediate range to the range where the load increases.

In step 150, it is determined whether only one of the air-conditioning systems is in the vent mode or the bi-level mode. In step 152, the air-conditioning system is in the vent mode or the bi-level mode. It is determined whether each of the air conditioning systems is in the vent mode or the bi-level mode only when one of the air conditioning systems is in the vent mode or the bi-level mode. If not, the air volume set in step 148, that is, the air volume set based on the control pattern shown by the solid line in FIG. 9 is maintained without any particular correction.

On the other hand, if it is determined that both the air-conditioning system blowing modes of the left and right seats are the vent mode or the bi-level mode, the process proceeds to step 154, and based on the control pattern shown by the solid line in FIG. Correction to increase the set LOW air volume as shown by the broken line (LOW air volume increase correction)
I do. Here, as shown in FIG. 10, the increase amount Bup of the LOW air volume is set to zero until the average solar radiation amount Qs becomes equal to or more than a predetermined value. The increase amount Bup is increased up to the upper limit value as the size increases, and is calculated as the increase amount of the duty ratio of the voltage applied to the motor 6 of the blower 7.

When the air-conditioning mode of one of the left and right air conditioning systems is the vent mode or the bi-level mode,
Proceeding to step 156, the air volume determined based on the control pattern shown by the solid line in FIG.
A process is performed to correct the control pattern to an average airflow with the airflow determined based on the control pattern obtained by adding a correction to increase the minimum airflow (LOW airflow) of the blower 7 in accordance with the average solar radiation Qs (airflow averaging) correction).

By the way, the heating start control performed when the heating start condition is satisfied is as shown in FIG. 11, and a control pattern for suppressing an increase in the air flow is selected, and the blower 7 is controlled based on this control pattern. Is performed, and when one of the air conditioning systems is in the vent mode, a process of correcting the suppressed air volume is performed.

More specifically, first, at step 160, the minimum temperature setting (MAX / MAX) is set after at least one of the right seat temperature setting device 46 and the left seat temperature setting device 47 has reached the heating start condition. C) or not, and when it is determined that the lowest temperature has not been set (MAX / C setting), the blowout mode of each air conditioning system is determined in steps 162 to 168. That is,
In step 162, it is determined whether or not the blowing mode of the air conditioning system on the right seat side is the vent mode. For each of the determination results, it is determined whether or not the blowing mode of the air conditioning system on the left seat side is the vent mode. Determine (Steps 164, 16
6) If it is determined that only the blowing mode of the air conditioning system on the right seat side is the vent mode, or if it is determined that only the blowing mode of the air conditioning system on the left seat side is the vent mode, the flow proceeds to step 168. Is set to the differential mode manually. If it is determined that the air-conditioning system of either side is also in the blow-out mode other than the vent mode, it is determined in step 170 whether the temperature of the engine cooling water is lower than the predetermined temperature α. If it is determined that the temperature is lower than the predetermined temperature α,
Even if at least one of the set temperatures is set to the maximum temperature (MAX / H), this is not accepted and the blower 7 is fixed at the minimum air flow (LOW air flow) (steps 172, 17).
4) It is determined whether or not 10 minutes have elapsed since the ignition switch was turned on (step 176). By the processing of Steps 170 to 176, the water temperature becomes the predetermined temperature α.
In this case, or until 10 minutes elapse after the ignition switch is turned on, the blower 7
If the water temperature is equal to or higher than the predetermined temperature α,
Alternatively, if ten minutes have elapsed since the ignition switch was turned on, the state fixed at the minimum air volume (LOW air volume) is released (step 178), and the air volume is increased at a predetermined rate. Then, when the air volume of the blower 7 reaches the target air volume (for example, MAXHI), the heating start condition establishment flag is reset (released), and a flag indicating that the heating start control is completed is set (step 18).
0-184).

In step 160, it is determined that the set temperature of at least one of the right seat temperature setting device 46 and the left seat temperature setting device 47 has been set to the minimum temperature (MAX / C) after the heating start condition is satisfied. Or if it is determined in steps 162 to 168 that the blowing mode of any of the air conditioning systems is the vent mode, or if the blowing mode is manually set to the differential mode, the minimum air volume (LOW air volume) To release the fixed state, and quickly adjust the air volume of the blower 7 to the target air volume (for example, MAX).
HI) (step 186).
188) When the air volume of the blower 7 reaches the target air volume, the flag indicating the establishment of the heating start condition is reset (released) (step 190).

Therefore, the control pattern for suppressing the increase of the air volume at the time of starting the heating as described above is generally such that the control shown in FIG. 12 is performed, and the water temperature becomes equal to or higher than the predetermined temperature α after the ignition switch is turned on. Until
Alternatively, the blower 7 is operated at the minimum air volume (L
OW airflow), and when the water temperature becomes equal to or higher than the predetermined temperature α, or after turning on the ignition switch,
When 0 minute has elapsed, the air volume is increased to a maximum air volume at a predetermined gradient. If at least one of the set temperatures is set to the minimum temperature (MAX / C) during the execution of such air volume suppression control (when the startup is canceled by the MANUAL setting), Control is performed to increase the air volume to the maximum air volume with a gradient greater than the gradient.

On the other hand, if it is determined in steps 162 to 168 that the air outlet mode of one of the air conditioning systems is set to the vent mode, the process proceeds to step 192, and a request is made at the time of heating activation. The control shown in FIG. 13 requested by the relationship between the air flow determined by the control pattern for suppressing the increase in the air flow shown in FIG. 12 and the heat load of the air conditioning zone air-conditioned by the air conditioning system not set to the vent mode. A process for correcting the average airflow with the airflow determined by the pattern is performed. Here, the control pattern requested in relation to the heat load of the air conditioning zone to be air-conditioned by the air conditioning system on the side not set to the vent mode is:
The total signal Ti (i
= R or L), the duty ratio of the voltage applied to the motor 6 is determined. When the cooling load or the heating load at which the absolute value of Ti is large is large, the air volume of the blower 7 is set to the maximum air volume ( The duty ratio of the voltage applied to the motor is assumed to be 100%), and in the middle range where the absolute value of (TR + TL) / 2 where the cooling load or the heating load is small (TR + TL) / 2 is small, the air volume is set to the minimum air volume (LOW air volume) (applied to the motor). The duty ratio of the voltage is reduced), and the air volume of the blower 7 is continuously increased from the intermediate region to the region where the load increases.

FIG. 14 shows a specific example of the air distribution door control in step 80.
0 is determined in step 200 as to whether or not the heating start condition is satisfied, based on whether or not a corresponding flag is set. If it is determined that the condition is satisfied, in step 202, the right seat It is determined whether or not the blowing mode of the air conditioning system on the side is the vent mode, and in step 204, whether or not the blowing mode of the air conditioning system on the left seat side is the vent mode. In step 202, when it is determined that the blowing mode of the air conditioning system on the right seat side is the vent mode, the heating start condition is satisfied, and the blowing mode of the other air conditioning system is the bi-level. Mode or the foot mode. In this case, the process proceeds to step 206, where the position of the air distribution door 22 is quantitatively divided by the air conditioning system supplied from the air conditioning system on the side set to the vent mode. Set the fitting (vent mode side air distribution) large. That is, based on the control pattern as shown in FIG. 15, as the air flow of the blower 7 decreases, the air conditioning system on the side not set in the vent mode (the air conditioning system on the side set in the bilevel mode or the foot mode) A correction is made to reduce the quantitative proportion of the supplied conditioned air. In other words, the smaller the air flow of the blower 7 is, the smaller the quantitative amount of the conditioned air supplied from the air conditioning system on the side set to the vent mode is. An air distribution control for increasing the ratio (vent mode side air distribution amount) is performed.

In steps 202 to 204,
If the air outlet mode of both air conditioning systems is not in vent mode,
That is, when the air-conditioning system is in the bi-level mode, when the air-conditioning system is in the foot mode, or when one of the air-conditioning systems is in the bi-level mode, If the system blowing mode is the foot mode, the process proceeds to step 208, and the position of the air distribution door 22 is changed to a position where the proportion of the conditioned air supplied from each air conditioning system becomes equal, that is, the air distribution The door 22 is fixed at the center.

On the other hand, if it is determined in step 200 that the heating start condition is not satisfied, the process proceeds to step 210 to determine whether or not the LOW air volume of the blower 7 has increased due to the solar radiation. If it is determined that there is no increase in the LOW air volume of the blower 7 due to the above, the process proceeds to step 208, where the air distribution door 22 is fixed at the center, and
If it is determined that the air volume has increased, that is, if the control in step 154 or 156 is performed, the blowout mode of each air conditioning system is determined in steps 212 to 216. That is, in step 212, it is determined whether the blowing mode of the air conditioning system on the right seat side is the vent mode or the bi-level mode, and the blowing mode of the air conditioning system on the left seat side is set to the vent mode for each of the determination results. Alternatively, it is determined whether the mode is the bi-level mode (step 2).
14, 216). And, when the blow mode of each air conditioning system is the vent mode or the bi-level mode, that is, when the blow mode of any air conditioning system is other than the foot mode, and the blow mode of any air conditioning system is the foot mode. In some cases, the process proceeds to step 208, where the air distribution door is fixed at the center, and when the blowing mode of one air conditioning system is the vent mode and the blowing mode of the other air conditioning system is the bi-level mode or the foot mode, Is step 21
8, the proportion of the conditioned air supplied from the air conditioning system on the side where the position of the air distribution door 22 is set to the foot mode (the amount of air distribution on the foot mode side) is reduced, and conversely, the side not in the foot mode. Is determined based on a control pattern as shown in FIG. 16 in which the quantitative ratio of the conditioned air supplied from the air conditioning system of FIG. That is, the larger the average amount of solar radiation Qs increases in accordance with the blowing mode (vent mode or bi-level mode) of the air conditioning system on the side other than the foot mode, the larger the amount of conditioned air supplied from the air conditioning system set in the foot mode. A correction is made to reduce the proportion, in other words, as the average solar radiation increases, the blowing mode of the air conditioning system not set to the foot mode (the air conditioning system set to the vent mode or the bi-level mode) Distribution control is performed to reduce the quantitative proportion of the conditioned air supplied from the air conditioner.

Accordingly, the above control can be summarized as follows at the time of heating activation, as shown in FIG.
At the time of the request for the heating start control, that is, at the beginning of heating when one of the air conditioning systems is in the foot mode or the bi-level mode and the other air conditioning system is a combination of the portions surrounded by the thick frame in the vent mode, the air distribution is performed. The correction is made so as to increase the air distribution from the air conditioning system on the side where the door 22 is set to the vent mode, and the air flow of the blower 7 is reduced in step 192.
Thereby, the air volume control at the time of heating activation is corrected to the average air volume of the air volume determined by the control pattern shown in FIG. 12 and the air volume determined by the control pattern shown in FIG. 13 (air volume averaging correction).

When air conditioning is corrected by solar radiation,
As shown in FIG. 17B, when there is a request for air conditioning correction due to solar radiation, that is, one air conditioning system is in a vent mode or a bi-level mode, and the other air conditioning system is surrounded by a thick frame in a foot mode. In the case of a combination of the parts, the air distribution door 22 is corrected so as to reduce the amount of air distribution from the air conditioning system on the side where the foot mode is set, and the air volume of the blower 7 is determined by step 156. The air flow determined based on the control pattern shown by the solid line in FIG. 9 requested in relation to the signal relating to the heat load of each of the left and right seats, and the LOW air flow increased with respect to this control pattern in accordance with the amount of solar radiation Is corrected to the average airflow with the airflow determined based on the control pattern corrected to perform the correction (airflow averaging correction).

Therefore, according to the above-described control, if the blowing mode of one air conditioning system is the foot mode or the bi-level mode at the time of starting heating, and the blowing mode of the other air conditioning system is the vent mode, it is shown in FIG. After the control pattern for suppressing the increase in the air volume has been selected, the quantitative proportion of the conditioned air supplied from the other air conditioning system (the air conditioning system in which the blowing mode is set to the vent mode) is determined in step 206 in FIG. Is corrected to be larger based on the control pattern indicated by,
In step 192, the air volume of the blower 7 is requested based on the relationship between the air volume determined by the control pattern for suppressing the increase in the air volume at the time of heating activation and the heat load of the air conditioning zone air-conditioned by the air conditioning system set to the vent mode. Since the air volume (average air volume) between the air volume and the air volume determined by the control pattern is set, for the air conditioning zone on the side set in the vent mode, the air volume of the blower 7 is suppressed to the average air volume, but the air distribution volume is reduced. By increasing the size, the air volume required in the vent mode can be approximated, and a good air-conditioning feeling can be obtained. The foot mode or the bi-level mode in which there is a demand to suppress an increase in the air volume is set. For the air conditioning zone on the side, although the air volume of the blower 7 increases to the average air volume, the air volume increased by reducing the air distribution volume is reduced. Can be killed, Therefore, it is possible to avoid an increase in the air volume to the side suppresses the increase of the air volume, it is not possible to inhibit the comfortable air-conditioning feeling.

Also, in the operation mode (at the time of the AUTO control) in which the air conditioning correction by the solar radiation is permitted, the blowing mode of one air conditioning system is the vent mode or the bi-level mode, and the blowing mode of the other air conditioning system is the foot mode. For example, after a control pattern indicated by a solid line in FIG. 9 required in relation to the heat load of each air conditioning zone is selected, one of the air conditioning systems (the air conditioning system in which the blowing mode is the vent mode or the bilevel mode) is used. Is corrected so as to increase based on the control pattern shown in FIG. 16 in step 218, and the air volume of the blower 7 is changed in step 156 to the heat load of each air conditioning zone. Is formed by correcting the airflow determined based on the control pattern requested in the relationship and the control pattern according to the magnitude of the amount of solar radiation. Since the air volume (average air volume) between the air volume and the air volume determined based on the control pattern is set, the air volume of the blower 7 is averaged for the air-conditioning zone on the side set to the vent mode or the bi-level mode. Although it can be suppressed to the air volume, it is possible to increase the air volume to the side where sunlight is shining by increasing the air distribution volume, and it is possible to obtain a good air conditioning feeling, and to the foot mode where it is not desired to increase the air volume With respect to the air conditioning zone on the set side, although the air volume of the blower 7 increases to the average air volume, the increased air volume can be offset by reducing the air distribution volume, and therefore, the air volume increases. It is possible to suppress an increase in the amount of air to the side where the air conditioning is not desired, and the comfortable air conditioning feeling is not hindered.

In the above description, the vehicle air conditioner has been described in which the left and right sides of the vehicle compartment are independently temperature-controlled. The above-described control may be used for an air conditioner for a vehicle.

[0067]

As described above, the first and second air conditioning systems having the lower air outlet and the upper air outlet, and
And the second air conditioning system has a common blower, and the temperature of the conditioned air and the blowing mode can be independently changed in each air conditioning system, and the quantitative distribution of the conditioned air supplied from each air conditioning system is distributed. In a vehicle air conditioner that can be changed by a door, an operation mode determination unit that determines a requested operation mode, a first blowout mode determination unit that determines a blowout mode of the first air conditioning system, A second blow mode determining means for determining a blow mode of the air-conditioning system, wherein an air flow rate of the blower is determined from a control pattern serving as a reference of the blower with respect to the operating mode determined by the operating mode determining means; The position of the air distribution door is determined based on the result of the determination by the determining means and the result of the determination by the first and second blowout mode determining means.
Since the air volume is corrected based on the determination result by the blowout mode determination means, fine air conditioning control can be performed, and a good air conditioning feeling can be given to both air conditioning zones.

In particular, the operation mode determining means determines that there is a request for the operating mode at the time of heating startup, including determination whether the operating mode determining means has a request for the operating mode at the time of heating startup, and According to the first and second blow mode determination means, the blow mode of one air conditioning system is a blow mode in which at least the lower blow port is opened, and the blow mode of the other air system is a blow mode in which only the upper blow port is opened. When it is determined that there is, after selecting a control pattern that suppresses an increase in the amount of airflow at the time of heating activation, the position of the air distribution door is changed by the quantitative ratio of the air-conditioning air supplied from the other air-conditioning system. The air flow rate of the blower is determined based on the control pattern that is set to be large, and the air flow rate of the blower is determined by the air flow rate that is determined based on the control pattern that suppresses an increase in the air flow rate at the time of heating activation and the other air conditioning system. If it is configured to correct the airflow between the airflow determined based on the control pattern required in relation to the heat load of the air-conditioning zone to be performed, the state in which the increase in the airflow at the time of heating activation is suppressed is suppressed. By avoiding this, the air-conditioning air volume supplied from both air-conditioning systems can be made appropriate. That is, even if the suppression of the increase in the air volume is requested at the time of heating start, when the other air conditioning system is set to the blowout mode in which only the upper air outlet is opened,
Feeling can be improved by bringing the air volume blown out from the other air conditioning system close to the required air volume.

Also, if the operation mode determining means requests an operation mode permitting the air conditioning correction by the solar radiation, including the determination of whether the operation mode determining means requests the operation mode allowing the air conditioning correction by the solar radiation. It is determined, and the first and second mode determination means determine that one of the air-conditioning systems has a blowing mode in which at least the upper air outlet is opened, and the other air-conditioning system has only a lower air blowing mode. When it is determined that the mode is the blowing mode that opens, the control pattern requested in relation to the heat load of each air conditioning zone is selected, and then the position of the air distribution door is changed.
It is determined based on a control pattern that sets a large proportion of the conditioned air supplied from one air conditioning system, and the air volume of the blower is adjusted to the control pattern required in relation to the heat load of each air conditioning zone. If it is configured to correct the airflow between the airflow determined based on the control pattern formed based on the control pattern formed by correcting the airflow determined based on the control pattern according to the magnitude of the amount of solar radiation, It is possible to avoid the inconvenience caused by the increase in the air flow rate during the air conditioning correction due to the solar radiation and to make the air conditioning air volume supplied from both air conditioning systems appropriate. That is, it is possible to increase the air flow only on the side where the increase in the air flow is required by the solar radiation, and to avoid the increase in the air flow to the side where the increase in the air flow is not required.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing a vehicle air conditioner according to the present invention.

FIG. 2 is a flowchart illustrating an operation example of air conditioning control by a control unit.

FIG. 3 is a flowchart showing a subroutine of a total signal calculation process in step 68 shown in FIG. 2;

FIG. 4 is a diagram illustrating a control outside air temperature TaD and correction terms αR and α.
FIG. 4 is a characteristic diagram showing a relationship with L.

FIG. 5 is a characteristic diagram illustrating the contents of mode door control in step 74 shown in FIG. 2;

FIG. 6 is a characteristic diagram illustrating the contents of intake door control in step 76 shown in FIG. 2;

FIG. 7 is a flowchart showing a subroutine of blower control in step 72 shown in FIG. 2;

FIG. 8 is a flowchart showing a continuation of the blower control shown in FIG. 8;

FIG. 9 is a characteristic diagram showing a control pattern for performing air volume setting based on a total signal of the left and right seats in step 148.

FIG. 10 is a graph showing average solar radiation Qs and blower LOW.
FIG. 7 is a characteristic diagram illustrating a relationship with an increase amount Bup of an air volume.

FIG. 11 is a flowchart showing an operation example of heating start control shown in step 114 of FIG. 7;

FIG. 12 is a characteristic diagram illustrating a control pattern of a blower that suppresses an increase in the amount of air when heating is started.

FIG. 13 is a characteristic diagram showing a control pattern for performing air volume setting by a total signal on one side.

FIG. 14 is a flowchart showing a subroutine of air distribution door control in step 80 shown in FIG. 2;

FIG. 15 is a characteristic diagram illustrating control in step 206, that is, control of the air distribution amount on the side set to the foot mode or the bi-level mode.

FIG. 16 is a characteristic diagram illustrating control in step 218, that is, control of the air distribution amount on the side set to the foot mode.

FIG. 17 is a table for explaining the relationship between the control of the air distribution door and the blower with respect to each combination of the blowing modes of the air conditioning system, and FIG. 17 (a) illustrates the case of the heating start control. 17 (b) shows the case of LOW air volume increase control by solar radiation, respectively.

[Explanation of symbols]

 7 Blower 15, 16 Mixed door 18a, 19a Defrost outlet 18b, 19b Vent outlet (upper outlet) 18c, 19c Foot outlet (lower outlet) 20a, 21a Differential door 20b, 21b Vent door 20c, 21c Foot door

Claims (6)

[Claims] A first air-conditioning system having a lower air outlet for supplying air-conditioned air below a first air-conditioning zone in the vehicle interior and an upper air outlet for supplying air-conditioned air upwardly; A second air-conditioning system having a lower air outlet for supplying air-conditioned air below the second air-conditioning zone, and a second air-conditioning system having an upper air outlet for supplying air-conditioned air upward. Use a common blower,
In addition to the means for independently changing the temperature of the conditioned air and the blowing mode in each air conditioning system, the quantitative ratio of the conditioned air supplied from each air conditioning system can be changed by the air distribution door. Operating mode determining means for determining a requested operating mode; first blowing mode determining means for determining a blowing mode of a first air conditioning system; and a blowing mode of a second air conditioning system. Second air flow mode determining means for determining the air flow rate, air flow determining means for selecting a control pattern serving as a reference of the blower based on the determination result by the operation mode determining means, and determining the air flow rate of the blower; The determination result by the means and the first
And an air distribution determining means for selecting a control pattern of the air distribution door based on a result of the determination by the second air mode determining means to determine a position of the air distribution door; and a first and a second air mode determining means. An air conditioner for a vehicle, comprising: an air volume corrector that corrects an air volume determined by the air volume determiner based on a determination result. 2. The operation mode determining means includes means for determining whether there is a request for an operation mode at the time of heating activation. The operation mode determination means determines that there is a request for an operation mode at the time of heating activation. And, the first and second blowout mode determination means determine that the blowout mode of one of the air conditioning systems is a blowout mode in which at least the lower blowout port is opened, and the blowout mode of the other air conditioning system only controls the upper blowout port. When it is determined that the blowing mode is open, the air flow rate determining means determines a flow rate of the blower by selecting a control pattern that suppresses an increase in the air flow rate when heating is started,
The air distribution determining unit determines the position of the air distribution door based on a control pattern that sets a large quantitative ratio of the conditioned air supplied from the other air conditioning system. The air flow rate of the blower is determined based on a control pattern required in relation to the air flow rate determined based on a control pattern that suppresses an increase in the air flow rate at the time of starting the heating and the heat load of an air conditioning zone air-conditioned by the other air conditioning system. 2. The air conditioner for a vehicle according to claim 1, wherein the air volume is corrected to an air volume between the determined air volume and the air volume. 3. The operation mode determining means includes a means for determining whether there is a request for an operation mode allowing air conditioning correction by solar radiation. It is determined that there is a request, and the first and second mode determination means determine that the air conditioning mode of one air conditioning system is an air blowing mode in which at least the upper air outlet is opened, and that the air conditioning mode of the other air conditioning system is lower. If it is determined that the blowing mode is such that only the side outlet is opened,
The air flow determining means selects a control pattern requested in relation to the heat load of each air conditioning zone to determine the air flow of the blower, and the air distribution determining means moves the position of the air distribution door to the one side. Is determined based on a control pattern that sets a large proportion of the conditioned air supplied from the air conditioning system, and the air volume correction means requests the air volume of the blower in relation to the heat load of each air conditioning zone. Correction based on the control pattern to be performed and the air flow determined based on the control pattern formed by adding a correction to this control pattern in accordance with the magnitude of the amount of solar radiation. 2. The method according to claim 1, wherein:
The air conditioner for vehicles according to any one of the preceding claims. 4. The vehicle air conditioner according to claim 2, wherein the blow mode in which the lower blow port is at least opened is a foot mode or a bi-level mode. 5. The air conditioner for a vehicle according to claim 3, wherein the blow mode in which the upper blow port is at least opened is a vent mode or a bi-level mode. 6. The air conditioning zone on the right seat side of the vehicle compartment, and the second air conditioning zone is an air conditioning zone on the left seat side of the vehicle compartment. 1,
4. The air conditioner for vehicles according to 2 or 3.