JPH06115344A - Air conditioning controller for automobile - Google Patents

Abstract

PURPOSE:To give a pleasant air-conditioning feeling to occupants by changing a blowing-out state to a driver's seat and a front passenger's seat to a whole blowing-out state from a concentration blowing-out state in linkage with the temperature control of the vehicle room inside to bring a vehicle room inside temperature close to a target temperature. CONSTITUTION:A blowing-out control means 12 controls driver's seat blowing- out change devices 16, 17 and front passenger's seat blowing-out change devices 18, 19 so that according to a variation between a vehicle room inside temperature detected by a room temperature sensor 10 and a target temperature set by a temperature setter 9, a concentration blowing-out state may be brought about when this variation is large and the temperature control of the vehicle room inside is in an excessive state, and a whole blowing-out state may be brought about when this variation is small and the temperature control of the vehicle room inside is in a regular state. As a result, a rapid and powerful air-conditioning feeling right after the start of temperature control in the vehicle room inside and a soft air-conditioning feeling after the temperature control of the vehicle room inside has progressed can be given to occupants.

Description

Description: TECHNICAL FIELD The present invention relates to an air conditioning control device for a vehicle, which controls the air conditioning of the vehicle interior by changing the direction of temperature-controlled air blowing into the vehicle interior of the vehicle. .

 [Prior art] Conventionally, when a passenger is in a high temperature and demands a rapid cooling, the passengers in the vehicle may feel a rapid cooling, and the air outlets provided in the center, left and right, etc. are switched and adjusted by themselves. The cold air is blown in the direction of, and if the temperature in the vehicle interior falls for a while after this, the temperature of the entire vehicle interior is lowered, and the outlets in the center and left and right are appropriately switched and adjusted to reduce the cold air that directly hits. The entire vehicle compartment is then air-conditioned.

 In such a manual operation, since the passenger feels cold or hot, and the air outlets in the center and left and right are switched, it takes time for the passenger to obtain a stable air conditioning state, and for that reason. There is a problem that the outlets must be switched frequently.

 Therefore, conventionally, as disclosed in Japanese Utility Model Laid-Open No. 51-66948, the blowout state is automatically changed from the concentrated blowout to the diffused blowout based on the vehicle interior temperature and the set temperature arbitrarily set by the occupant. Mono is proposed.

 [Problems to be Solved by the Invention] However, in the conventional technology as described above, when automatic control of the vehicle interior temperature is performed, if the set temperature of the blowout direction adjustment and the set temperature of the room temperature control do not match, Although the passenger compartment temperature has reached the set temperature and the occupant has a comfortable air-conditioning feeling, concentrated blowout continues and the passenger compartment is blown out even though the passenger compartment temperature has not reached the set temperature. There was a problem that it was switched to the diffusion blowout from early.

 Also, in the case of a typical automobile, air conditioning is performed by providing multiple air outlets for the driver's seat and multiple air outlets for the passenger seat, but in many cases there are no passengers in the passenger seat, In such a case, if concentrated blowing is performed also on the passenger seat, there is a problem that the concentrated blowing is completely wasted. In particular, if concentrated blowing is performed when there is no passenger in the passenger seat, the effect of lowering the temperature of the entire passenger compartment may be weakened, and problems such as blowing noise due to concentrated blowing may occur.

 In view of the above-mentioned problems, the present invention switches between centralized blowing and total blowing according to the deviation between the vehicle interior temperature and the target temperature in the process of air conditioning control in which the vehicle interior temperature is made to match the target temperature. The object of the present invention is to provide an air conditioning control device for an automobile, which can give a passenger a comfortable feeling of air conditioning, and which does not cause unnecessary concentrated air blow.

 [Means for Solving the Problems] In order to achieve the above object, the present invention provides a room temperature sensor for detecting a vehicle interior temperature, a temperature setter for setting a target temperature, and an air temperature blown into the vehicle interior. An air conditioning controller for an automobile, comprising: an adjusting device that adjusts the temperature; and a temperature control unit that controls the adjusting device so that a vehicle interior temperature detected by the room temperature sensor approaches a target temperature set by the temperature setting device. A plurality of driver seat outlets for supplying the adjusted air to the driver seat, a plurality of passenger seat outlets for supplying the adjusted air to the passenger seat, and a specific driver seat outlet among the plurality of driver seat outlets. A driver's seat blowout changing device that switches between a concentrated blowout state in which the adjusted air is concentrated at an outlet and an overall blowout state in which the adjusted air is diffused at the plurality of driver's seat outlets, and among the plurality of passenger seat outlets of A passenger seat blow-out change device that switches between a concentrated blow-out state in which the adjusted air is concentrated at a specific passenger-side blow-out port and a general blow-out state in which the adjusted air is diffused at the plurality of passenger-side blow-out ports, and the room temperature sensor. Depending on the size of the deviation between the detected vehicle interior temperature and the target temperature set by the temperature setting device, when the deviation is large and the temperature control in the vehicle interior is in a transient state, the concentrated blow-out state occurs and the above-mentioned deviation occurs. Is small and the temperature control in the passenger compartment is in a steady state, the blowout control means for controlling the driver's seat blowout changing device and the passenger's seat blowout changing device so as to be in the whole blowout state, and the presence or absence of a passenger in the passenger seat When the determination means determines that there is no passenger in the passenger seat, the passenger seat is configured to be in the full blowout state regardless of the control by the blowout control means. Adopt the technical means of and a passenger seat air discharge control means for controlling the changing device out.

 The broken line in FIG. 7 indicates the flow of conditioned air.

 [Operation] According to the above configuration of the present invention, the temperature of the air blown into the vehicle compartment is adjusted by the adjusting device, and the adjusted air is blown out from the plurality of driver seat outlets and the plurality of passenger seat outlets. It

 Moreover, the blowing conditions from the multiple driver's seat outlets are the centralized blowing condition in which the driver's seat blowing changing device intensively blows out from a specific outlet, and the overall blowing condition in which the driver's blowing outlet diffuses from multiple outlets. Can be switched to.

In addition, the blowout state from multiple passenger seat outlets can be controlled by the passenger seat blowout changing device by the concentrated blowout state in which specific blowout ports are collectively blown out and the overall blowout state that diffuses from multiple blowout ports. The state is switched to.

 Then, the temperature control means controls the adjusting means according to the vehicle interior temperature detected by the room temperature sensor and the target temperature set by the temperature setter so that the vehicle interior temperature is controlled to be close to the target temperature. Do.

 On the other hand, the blow-out control means, when the temperature control in the vehicle interior is in a transient state, the deviation is large depending on the deviation between the vehicle interior temperature detected by the room temperature sensor and the target temperature set by the temperature setting device. The driver's seat blowing changing device and the passenger's seat blowing changing device are controlled so that when the temperature control inside the vehicle is in a steady state and the temperature is controlled in a steady state, the driver's seat blowing changing device and the passenger's seat blowing changing device are controlled.

 As a result, when the passenger compartment temperature is not close to the target temperature, the regulated air is concentrated at a specific outlet to make a strong blow, and it is possible to directly contact the passenger with the regulated air. When the vehicle approaches the target temperature, it blows out from multiple outlets as a whole, giving the passengers a soft feeling of air conditioning.

 Further, in the configuration of the present invention, when the determination unit determines that there is no passenger in the passenger seat, the passenger seat control unit controls the passenger seat blowout changing device so that the passenger seat blowout changing device is in the entire blowout state.

 This prevents unnecessary concentrated blowout when there is no passenger in the passenger seat.

 [Effects of the Invention] According to the configuration and operation of the present invention described above, the blowing state to the driver's seat and the passenger's seat is concentrated in conjunction with the temperature control in the vehicle interior that brings the vehicle interior temperature close to the target temperature. Since it is switched to the blowout state, the occupant can be provided with a rapid and powerful air-conditioning feeling immediately after the start of temperature control in the passenger compartment and a soft air-conditioning feeling after the temperature control in the passenger compartment has progressed.

 In addition, assuming that there is no passenger in the passenger seat, and if there is no passenger in the passenger seat, the entire blow-out state is set, so there is no unnecessary concentrated blowing, and It can give a comfortable air conditioning feeling.

 [Embodiment] An embodiment of the air conditioning control device for an automobile of the present invention will be described below, which is designed to operate effectively for a target occupant seated in all seats.

 FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

 In FIG. 1, reference numeral 1 denotes an air conditioning unit, which is a blower motor 1a for selectively introducing air from the inside or outside of the vehicle by a known air introducing device and blowing the air, and an evaporator for cooling and passing the air blown by the blower motor 1a. 1b, a heater core 1c that introduces engine cooling water and heats the blast air by its heat, and an air mix damper that adjusts the temperature by adjusting the ratio of the air passing through the evaporator 1b to the heater core 1c side. It is composed of 1d etc. Reference numeral 2 is a front central air outlet, 2'and 2 "are front lateral air outlets, which are provided with wind direction changing plate groups 2a, 2b, 2c, 2d to switch the air outlet direction on the front side of the vehicle interior. The outlets 3 ', 3 "are rear lateral outlets, and are provided with wind direction changing plate groups 3a, 3b, 3c, 3d to switch the blowing direction on the rear side of the passenger compartment. Similar to the known ones, these outlets are provided with change grills that can manually adjust the outlet direction. The wind direction changing plate groups at the front central outlet 2 and the rear central outlet 3 are rotatably supported so that they can be continuously positioned from the opening shown by the solid line to the opening shown by the broken line, and the blowing direction is changed. Constitutes a means. Reference numeral 4 is a rear cra unit, which is composed of a blower motor 4a and an evaporator 4b. The seat switches 5, 6 and 7 are closed to generate seat signals when passengers are seated in the passenger seat, rear left seat and rear right seat, respectively. Reference numeral 8 denotes a rear cooler switch, which is provided at a position where the instrument panel on the front of the driver's seat or a passenger in the rear seat can operate, and is turned on when the rear cooler is operated to generate a rear cooler signal. Reference numeral 9 is a temperature setting device for setting a target temperature, which is arranged on the instrument panel or the like and is used by an occupant to manually set a desired temperature. Reference numeral 19 denotes a room temperature sensor, which detects a representative temperature in the passenger compartment provided on the panel in the passenger compartment, for example. Reference numeral 11 denotes an A / D converter for converting an analog signal into a digital signal, which sequentially converts the room temperature signal from the room temperature sensor 9 and the setting signal from the temperature setting device 11 into a digital signal.

 Reference numeral 12 is a digital computer for executing digital arithmetic processing by software according to a predetermined control program, which uses a microcomputer. This computer is connected with a crystal oscillator 13 of several pgahertz (MHz), and is supplied with power from a vehicle-mounted battery to generate a stabilized voltage of 5 V (V) from a stabilized power supply circuit (not shown). It is activated by the supply of the regulated voltage. The microcomputer 12 has a read-only memory (ROM) that stores a control program that defines an operation procedure, and a central processing unit (ROM) that sequentially reads the control program from the ROM and executes the corresponding operation processing. CPU), a memory (RAM) for temporarily storing various data related to the arithmetic processing of the CPU and capable of reading the data by the CPU, and a reference clock for the various arithmetic operations together with the crystal oscillator 13. The main components are a clock generator that generates pulses and an input / output (I / O) circuit for various signals. By the calculation processing of the microcomputer 12, the command signal for controlling the rotation speed of the blower motors 1a, 4a, the wind direction changing plate groups 2a, 2b, 2c, 2d in the front central air outlet 2, and the wind direction in the rear central air outlet 3 are provided. A command signal for changing the direction of the change plate groups 3a, 3b, 3c, 3d is generated.

 Reference numerals 14 and 15 denote motor drive circuits for controlling the rotation speeds of the blower motors 1a and 4a, respectively. As shown in FIG. 2, the microcomputer 12 outputs a digital command signal 12a indicating the rotation speed to a latch command pulse signal. A latch circuit 20 for latching in response to 12b, a D / A converter 21 for converting the latched digital signal into an analog signal, an oscillator circuit 22 for generating a triangular wave signal with a constant frequency and a constant amplitude, and A triangular wave signal from the circuit 22 and an analog signal from the D / A converter 21 are compared to generate a pulse train having a constant frequency and a duty ratio proportional to the magnitude of the analog signal. The amplifier circuit 24 that amplifies the rotation speed of the blower motor is controlled by controlling the duty ratio of the current supplied to the blower motor. It is Gosuru thing. Reference numerals 16, 17, 18, and 19 are change actuators as driving means, which are the wind direction changing plate groups 2a, 2b, 2c, 2d of the front central outlet 2 and the wind direction changing plate groups 3a, 3b of the rear central outlet 3, respectively. 3c and 3d are changed and driven.

 Each of these changing actuators is designed to drive two changing plates at the same time according to a command from the computer 12. For example, the actuator 16 drives the changing plates 2a and 2b in an interlocking manner.

When the change plates 2a and 2b (the same applies to the other change plates) are in the broken line position, a part of the air from the air conditioning unit 1 is blown out from the front central air outlet 2 toward the front left seat and is blown sideways. It is also blown into the passenger compartment from exit 2 '. When the change actuator 16 operates, the change plates 2a and 2b change from the broken line position to the solid line position in proportion to the operation amount, that is, the blowout amount from the lateral outlet 2'is reduced and at the same time, the central outlet Increase the blowing amount from 2 to the front left seat. The other change actuators 17, 18 and 19 also operate in the same manner. If the amount of operation is small, the amount of air blown directly toward the seat occupant is small and the air is blown out into the entire passenger compartment. The amount of air coming out increases.

 FIG. 3 shows the configuration of the modified actuator, which includes a latch circuit 25 for latching in response to a command pulse 12d for latching a digital command signal 12c indicating the operation amount from the microcomputer 12, and a latched digital circuit. It is composed of a D / A converter 26 for converting a signal into an analog signal, an error amplifier 27, and a servomotor 28 driven by the output signal of the error amplifier 27 while feeding back the operation amount to the error amplifier 27. , The change amount of the wind direction changing plates 2a, 2b (2c, 2d, 3a, 3b, 3c, 3d are the same) is controlled by the output operation amount of the servo motor 28.

 Next, the operation of the above configuration will be described with reference to the calculation flow charts shown in FIGS.

 FIG. 4 is a calculation flow chart showing the entire calculation processing of the micro computer 12 by the control program, and FIG. 5 is a calculation flow chart showing the detailed calculation processing of the blower speed control calculation routine in FIG. FIG. 4 is a calculation flow chart showing detailed calculation processing of the blow-out direction control calculation routine in FIG. First, the arithmetic processing will be described.

 Now, in an automobile equipped with this device, when an air conditioner switch (not shown) is turned on, the microcomputer 12 is stabilized by a stabilized power supply circuit which is supplied with power from an in-vehicle battery via an ignition switch (not shown). When the control voltage is supplied, the operation state is entered, and the arithmetic processing of the control program is executed in a period of about several hundred milliseconds (msec).

 That is, the arithmetic processing is started from the start step 100 in FIG. 4, and the routine proceeds to the initialization routine 200 to set the registers, counters, latches, etc. in the microcomputer 12 to the initial state necessary for starting the arithmetic processing. An initial setting signal is issued to the circuit controlled by the micro computer 12 to set the circuit to the initial state. Then, the flow proceeds to the blower speed control calculation routine 300 due to this initial setting error.

 In this blower speed control calculation routine 300, the air volume corresponding to the difference between the room temperature and the set temperature is obtained based on the room temperature signal from the room temperature sensor 10 and the setting signal from the temperature setter 9, and the blower motor 1a and the rear motor are associated with this air volume. When the cooler switch 8 is turned on, a calculation process for controlling the rotation speed of the blower motor 4a is executed, and the process proceeds to the next temperature control calculation routine 400.

 In this temperature control calculation routine 400, based on the deviation between the room temperature and the set temperature, the temperature such as the opening / closing angle control of the air mix damper 1d, the ON / OFF control of the compressor (not shown), and the switching control of the inside / outside air switching damper are controlled. Various calculation processes for adjustment are executed, and the flow proceeds to the blowing direction control calculation routine 500.

 In the blow-out direction control calculation routine 500, based on the deviation between the room temperature and the set temperature, the signal states from the seat switches 5, 6, 7 and the rear cooler switch 8, the wind direction changing plate groups 2a, 2b of the front center blow-out port 2 are set. , 2c, 2d and the wind direction changing plate groups 3a, 3d, 3c, 3d of the rear central outlet 3 are subjected to arithmetic processing for controlling the drive unit, and the flow returns to the blower speed control arithmetic routine 300. After that, the calculation processing from the blower speed control calculation routine 300 to the blowout direction control calculation routine 500 is repeated at a cycle of several hundred msec.

 Next, the detailed calculation processing of the blower speed control calculation routine 300 in the above-described repeated calculation will be described with reference to the calculation flow chart of FIG.

 In this blower speed calculation routine 300, the calculation processing is started from the temperature input step 301, and the room temperature signal from the room temperature sensor 10 and the setting signal from the temperature setter 9 are sequentially digitalized via the A / D converter 11. Input as a signal, and proceed to deviation calculation step 302. In this deviation calculation step 302, the deviation ΔT is calculated from the room temperature Tr and the set temperature Ts input in the temperature input step 301 by the calculation formula ΔT = Tr−Ts, and the flow proceeds to the next air volume setting step 303. The deviation ΔT obtained in the deviation calculation step 302 is stored in a predetermined address in the RAM of the microcomputer 12. Then, in the air volume setting step 303, the air volume W is obtained from the characteristic relationship shown in the figure by the deviation ΔT. The characteristic relation is stored in advance in the ROM of the microcomputer 12, the numerical range of the deviation ΔT is searched, the coefficient of the linear function for the numerical range is taken out, and the air volume W for the deviation ΔT is calculated and obtained. Then, the process proceeds to the next rear cooler determination step 304, and it is determined whether or not the rear cooler signal is generated from the rear cooler switch 8. When the rear cooler signal is generated, the determination becomes YES, but the rear cooler signal is generated. If no is occurring, the determination is no (NO) and the process proceeds to the output step 305. In this output step 305, a command signal corresponding to the air volume W determined in the air volume setting step 303 is issued to the motor drive circuit 14, and the arithmetic processing of the blower speed control arithmetic routine 300 ends.

 On the other hand, when the determination in the rear cooler determination step 304 is YES, the process proceeds to an output step 306, and a command signal corresponding to the air volume W obtained in the air volume setting step 303 is issued to both the motor drive circuits 14 and 15 to control the blower speed. The calculation process of the calculation routine 300 ends.

 Next, detailed calculation processing of the blowout direction control calculation routine 500 will be described with reference to the calculation flow chart of FIG.

 In the blowing direction control calculation routine 500, the positions of the wind direction changing plate groups 2a, 2b, 2c, 2d, 3a, 3b, 3c, 3d are set according to the deviation ΔT.

First, in the change plate group position setting step 501, the operation amount S of the change actuators 16 to 19 is obtained from the characteristic relationship shown in the figure. This characteristic relationship is previously stored in the ROM of the microcomputer 12, the numerical range of the deviation ΔT is searched, the coefficient of the linear function with respect to the numerical range is read, and the actuation amount S for the deviation ΔT is calculated.

 Here, when ΔT is large, the operation amount S is also the maximum value, and the airflow direction changing plate has the airflow direction concentrated in the seating direction as described above, and when ΔT is small, the operation amount S is the minimum value S0. The blowing direction will be uniform throughout.

 The operation of each of the actuators 16, 17, 18 and 19 is as follows. First, in a passenger seat direction blowing judgment step 502, it is judged whether or not a seat signal is generated from a seat switch 5 provided in the passenger seat, and the seat signal is judged. If no is occurring, the determination is NO, the process proceeds to the driver's seat blowing command step 504, and a command signal is issued to the driver's seat actuator 17 in order to obtain the stroke S obtained in step 501 according to the deviation ΔT, and this is driven. Then, the process proceeds to the left rear seat direction blowing determination step 505. On the other hand, when the determination in the passenger seat direction blowout determination step 502 is YES, the process proceeds to the driver seat and passenger seat blowout command step 503, where a command signal is issued to the actuators 16 and 17 in the driver seat and passenger seat, and the deviation ΔT is determined. The actuators 16 and 17 are driven so as to generate the operation amount S, and the process proceeds to the left rear seat direction blowing determination step 505.

 In this left rear seat direction blowout determination step 505, it is determined whether or not a seat signal is generated from the seat switch 6, and when the seat signal is not generated, the determination becomes NO, and in step 506, the left rear seat A command signal is issued to cause the actuator 18 to generate the minimum actuation amount S0, and the process proceeds to the right rear seat direction blowout determination step 508. On the other hand, when the determination is YES, the process proceeds to the left rear seat blowing command step 507, a command signal is issued to the actuator 18 in the left rear seat, the actuator 18 is driven so as to generate the actuation amount S according to the deviation ΔT, and the right actuator is driven. The process proceeds to the rear seat direction blowout determination step 508.

 In the right rear seat direction blowing determination step 508, it is determined whether or not a seat signal is generated by the seat switch 7, and when the seat signal is not generated, the determination is NO, and the right rear seat direction blowing command step is performed. In step 509, a command signal is generated to cause the actuator 19 on the right rear seat to generate the minimum actuation amount S0, the actuator 19 is driven, and the calculation processing of the blowout direction control calculation routine 500 ends. When the right rear seat signal is generated, the determination is YES and the process proceeds to the right rear seat blowing command step 510, where a command signal is issued to the actuator 19 and the actuator 19 is driven so as to generate the actuation amount S according to the deviation ΔT. Then, the calculation processing of the blowout direction control calculation routine 500 is completed.

 Next, the overall operation of the air conditioning control in various states will be sequentially described.

 First, a description will be given of a case where two occupants boarded in this vehicle when the vehicle interior temperature is higher than the set temperature by 5 ° C. or more. At this time, if the air conditioner switch is turned on at the same time as the operation is started because the vehicle interior is in a high temperature state, the microcomputer 12 to which the stabilizing voltage is supplied from the stabilizing power supply circuit is activated. Then, the calculation process is started from the start step 100 in FIG. 3, the initial setting routine 200 is proceeded to, and various initial settings are performed, and then the brom speed control calculating routine 300 is proceeded to.

In the blower speed control calculation routine 300, the room temperature Tr and the set temperature Ts are input in the temperature input step 301, and the deviation ΔT is obtained in the deviation calculation step 302. At this time, the deviation ΔT becomes a value of 5 ° C. or more because the vehicle interior is in a high temperature state. Therefore, the air volume W obtained in the next air volume setting step 303 becomes the maximum of about 370 m ³ / h. Then, the process proceeds to the next rear cooler determination step 304, but if the rear cooler switch 8 is turned on at this time, the determination becomes YES, and the process proceeds to the output step 306 to obtain the air volume W obtained above, that is, about 370 m ³ / h. A command signal corresponding to the above is issued to the motor drive circuits 14 and 15, and the one-time arithmetic processing of the blower speed control arithmetic routine 300 is completed. Therefore, the blower motor 1a is rotated at high speed.

 Then, the process proceeds to the next temperature control calculation routine 400, the opening / closing angle of the air mix damper 1d is controlled in accordance with the deviation ΔT at that time, and the calculation process for turning on the compressor and blowing cold air is executed. , And proceeds to the next blowout direction control calculation routine 500.

 In the blowout direction control calculation routine 500, the operation amount first obtained in the airflow direction changing plate group position setting step 501 becomes the maximum of 20 mm because the deviation ΔT is a value of 5 ° C. or more.

 Then, the process proceeds to the next passenger seat direction blowing determination step 502, but since the passenger is seated in the passenger seat, the determination becomes YES, and the driver seat and passenger seat blowing instruction step 503 is proceeded to, and the actuator 16 , 17 command signals to drive the actuators so that each stroke is 20 mm, and blows wind intensively to the driver's seat and the passenger seat.

 Next, the process proceeds to the left rear seat blowing determination step 505, but since there are two occupants, the determination is NO, and the process proceeds to the next right rear seat blowing determination step 507, but the same determination is NO, left and right. Rear seat direction constant blowout command step 509 is proceeded to, where a command signal of the minimum operation amount S0 is sent to the actuators 18 and 19 to drive the actuator so that the blowout of the rear cooler becomes the whole blowout regardless of the operation of the rear cooler. The one-time calculation process of the blow-out direction control calculation routine 500 is completed, and the flow returns to the blower speed control calculation routine 300.

 After that, by repeating the calculation processing from the blower speed control calculation routine 300 to the blowout direction control calculation routine 500 at a cycle of several hundred msec, the wind direction changing plate group 2b in the front central blowout opening 2 is moved toward the driver's seat. The wind direction changing plate group 2a is directed toward the front passenger seat, and the maximum cold air from the maximum rotation of the blower motor 1a is blown toward the driver's seat and the front passenger seat to perform cooling by concentrated blow.

 After that, when the vehicle interior temperature is gradually decreased and the deviation from the set temperature is lower than 5 ° C., the air volume W obtained in the air volume setting step 303 in the blower speed control calculation routine 300 is gradually reduced. Therefore, the amount of cold air blown into the passenger compartment gradually decreases.

At the same time, the operation amount S at the position of the wind direction changing plate group is gradually reduced from the maximum value, so that the width in the blowing direction is gradually expanded from the concentrated blowing. Then, when the deviation ΔT between the vehicle interior temperature Ts and the set temperature Tr is within 2 ° C, the air volume W becomes the minimum of about 180 m ³ / h, and the operation amount of the wind direction changing plate group position is also the minimum value S0 (about 4 mm). Then, a command signal for blowing air into the passenger compartment from all the outlets is issued to the motor drive circuits 14 and 15 and the actuators 16, 17, 18 and 19 to air-condition the entire passenger compartment.

 In the above description, the case where two passengers operate the rear cooler has been described, but when the rear cooler is not operated, the air blow from the rear cooler unit by the motor 4a is stopped.

 When three or four passengers are boarding, the rear cooler switch 8 is inserted to adjust the rear seat blowing direction in the same manner as the front seat by the wind direction changing plate groups 3a, 3b, 3c, 3d according to the seat position.

 Furthermore, the concentrated blow that directs the temperature-controlled air blow toward the target passenger is performed not only when the temperature inside the vehicle is high, but also when the temperature inside the vehicle is low. That is, when the temperature inside the vehicle compartment is lower than the set temperature by a predetermined temperature difference or more due to the characteristic relationship shown in step 501, the warm air is concentrated and blown toward the target passenger.

 The present invention is not limited to the above-mentioned embodiment, but can be carried out by adding the following modifications.

 (1) In addition to using the so-called air mix type air conditioning unit 1 as in the above embodiment, an evaporator, a heater core arranged downstream thereof, and a valve for adjusting the amount of engine cooling water passing through the heater core are used. A so-called reheat type, which is composed of a mechanism, may be used.

 (4) A plurality of room temperature sensors 10 may be provided in the passenger compartment, and the average temperature may be used as the representative temperature.

[Brief description of drawings]

 FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, FIG. 2 is a detailed configuration diagram of the motor drive circuit diagrams 14 and 15 in FIG. 1, and FIG. 3 is a modified actuator 16 in FIG. , 17, 18 and 19 in detail, FIG. 4 is a flow chart showing the overall calculation processing by the control program of the microcomputer shown in FIG. 1, and FIG. 5 is a blower speed control calculation routine shown in FIG. 6 is a calculation flow chart showing the detailed calculation processing of FIG. 6, FIG. 6 is a calculation flow chart showing the detailed calculation processing of the blow-out direction control calculation routine in FIG. 4, and FIG. 7 is a block diagram of the present invention. DESCRIPTION OF SYMBOLS 1 ... Air conditioning unit, 2a, 2b, 2c, 2d, 3a, 3b, 3c, 3d ... Wind direction changing plate group, 4 ... Rear cooler unit, 9 ... Temperature setting device, 10 ... Room temperature sensor, 12 ... Microcomputer 16, 17, 18, 19 ... Change actuator.

Claims (1)

[Claims] 1. A room temperature sensor for detecting a vehicle interior temperature, a temperature setter for setting a target temperature, an adjusting device for adjusting a temperature of air blown into the vehicle interior, and a vehicle interior detected by the room temperature sensor. An air conditioning control device for an automobile, comprising: a temperature control means for controlling the adjusting device so that the temperature approaches a target temperature set by the temperature setting device, wherein a plurality of driver's seat outlets for supplying the adjusting air to the driver's seat. A plurality of passenger seat outlets for supplying the adjusted air to the passenger seat; a concentrated blowout state in which the adjusted air is concentrated at a specific driver seat outlet among the plurality of driver seat outlets; A driver's seat blowout changing device for switching between the blowout state of the driver's seat and the entire blowout state of the adjusted air, and a concentrated blow for concentrating the regulated air at a specific passenger's blowout port among the plurality of passenger's seat blowout ports. A passenger seat blow-out change device that switches between an outlet state and an entire blow-out state in which the adjusted air is diffused to the plurality of passenger seat outlets, a passenger compartment temperature detected by the room temperature sensor, and a temperature setting device. Depending on the size of the deviation from the target temperature, when the deviation is large and the temperature control in the passenger compartment is in a transient state, the concentrated blowout state is reached, and when the deviation is small and the temperature control in the passenger compartment is in a steady state. Blow-out control means for controlling the driver's seat blow-out changing device and the passenger's seat blow-out changing device so that the whole blow-out state is obtained, a judging means for judging the presence or absence of an occupant in the passenger seat, and a judging means for the passenger seat. When it is determined that there is no occupant, the passenger seat blowing control means for controlling the passenger seat blowing changing device so as to be in the whole blowing state regardless of the control by the blowing control means. Automotive air conditioning control equipment, characterized in that.