JP3303355B2 - Vehicle air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle capable of performing control reflecting the preference of an operator during automatic control.

[0002]

2. Description of the Related Art Conventionally, an air conditioner for a vehicle has an air conditioner for air-conditioning the interior of a vehicle, a detector for detecting an environmental factor affecting the air-conditioning state of the interior of the vehicle, and a detection signal from the detector. Calculating means for calculating a target blowing temperature of air blown into the vehicle interior, and automatic setting means for automatically setting a control state of the air-conditioning means based on a calculation result of the calculating means and a predetermined control characteristic of automatic control, There is known an apparatus having automatic control means for automatically controlling the control state of the air conditioning means based on the output signal of the automatic setting means.

[0003]

However, the control characteristics of the automatic control as described above are determined so as to be accepted by most users in a standard use condition.
It does not provide a comfortable air-conditioning feeling for each user having a variety of temperature sensations, noise sensations, and the like. Therefore,
In order to match each user's temperature sensation, noise sensation, and the like to his or her preference, it was necessary to manually operate a manual setting switch for fixing the control state of the air conditioner based on the setting state. For this reason, every time the vehicle air conditioner is operated, it is necessary to manually operate the manual setting switch, which is troublesome.

In order to solve such a problem, Japanese Patent Laid-Open Publication No. Hei 3-54015 discloses an automatic control system for automatically controlling the air conditioner when a manual setting switch is operated during automatic control. A vehicle air conditioner (hereinafter, referred to as a conventional technique) in which control characteristics are changed according to manual setting data is disclosed. However, in the conventional technology, it is very difficult to comprehensively recognize the control characteristics of the automatic control changed by the operator from the environmental state and the air conditioning state, and the user performs excessive manual operation, There have been problems such as distrust of automatic control.

The present invention makes it possible to easily recognize whether or not automatic control reflecting the user's sense of temperature and noise is being performed, so that the user can avoid excessive control during automatic control of air conditioning means. It is an object of the present invention to provide an air conditioner for a vehicle, which prevents a troublesome manual operation or a distrust of automatic control.

[0006]

The vehicle air conditioner of the present invention employs the technical means shown in FIG. The vehicle air conditioner 100 includes an air conditioner 101 that air-conditions a vehicle interior.
A storage means 102 for storing control characteristics of the air conditioner 101; an automatic control means 103 for automatically controlling the control state of the air conditioner 101 based on the control characteristics stored in the storage means 102; And a manual setting means 104 for fixing the control state of the air conditioning means 101 based on the setting state of the air conditioner. Further, during the automatic control by the automatic control means 103, the manual setting means 10
4 is manually operated, the setting state of the manual setting means 104 is learned, and based on the learning result, the control characteristic of the air conditioning means 101 stored in the storage means 102 is changed and stored. Means 105 and the automatic control by the automatic control means 103 are performed by the characteristic changing means 1
And a learning display unit 106 for displaying whether or not the automatic control is performed based on the control characteristics changed by step 05.

[0007]

According to the present invention, the temperature control and the noise sensation of the user are automatically controlled by the automatic control means based on the control characteristics of the air conditioner stored in the storage means. When the manual setting means is manually operated to reflect the above, the characteristic changing means learns the setting state of the manual setting means. Then, the characteristic change unit issues a command to the storage unit to change and store the control characteristic of the air conditioner stored in the storage unit based on the learning result of the setting state of the manual setting unit. Then, by displaying on the learning display means whether or not the automatic control by the automatic control means is the automatic control based on the control characteristic changed by the characteristic changing means, the automatic reflection reflecting the user's individual sense of temperature and noise is performed. It is possible to easily recognize whether or not the control is being performed.

[0008]

【Example】

Next, an air conditioner for a vehicle according to the present invention will be described with reference to an embodiment shown in FIGS. FIG. 1 is a view showing an automobile air conditioner.
The automotive auto air conditioner 1 has a duct 2 provided on the front side of the vehicle interior of the vehicle.
From the upstream to the downstream, an inside / outside air switching damper 3, a blower 4, an evaporator 5, an air mix damper 6, a heater core 7, a differential damper 8, a vent damper 9, and a foot damper 10 are provided.

The inside / outside air switching damper 3 is the air conditioning means of the present invention, and is driven by the servo motor 11 to
Outside air introduction mode in which outside air (outside air) is introduced from the outside air introduction port 12a of the outside, and room air (inside air) through the inside air introduction port 12b.
Switch between the inside air circulation mode and the introduction. Blower 4
Is the air-conditioning means of the present invention, in which the outside air from the outside air inlet 12a or the inside air from the inside air inlet 12b is introduced into the duct 2 in accordance with the rotation speed of the blower motor 14 whose applied voltage is controlled by the blower drive circuit 13. The air is introduced as an air flow and is blown into the vehicle interior via the evaporator 5 and the heater core 7.

The evaporator 5 is a refrigerant evaporator of a so-called refrigeration cycle, and cools the air sent by the blower 4 according to the operation of the refrigeration cycle. Note that the refrigeration cycle is the air-conditioning means of the present invention, and the evaporator 5
In addition, a compressor (refrigerant compressor), a condenser (refrigerant condenser), a receiver (liquid receiver), an expansion valve (expansion valve), and the like, all of which are not shown, are provided. Further, the start of the refrigeration cycle is started by transmitting the torque of the engine to the compressor by energizing (turning on) an electromagnetic clutch (not shown) of the compressor. The air mix damper 6 is the air conditioning means of the present invention, and is driven by the servomotor 15 to adjust the amount of air passing through the heater core 7 and the amount of air bypassing the heater core 7 according to the opening degree.

The heater core 7 heats the air passing therethrough in accordance with the temperature of the cooling water from the engine cooling system of the automobile, and performs a differential damper 8, a vent damper 9 and a foot damper 10
Flow toward. The differential damper 8, the vent damper 9, and the foot damper 10 are air conditioning means of the present invention, and are driven by servo motors 16 to 18, respectively, to open and close the defroster outlet 19, the vent outlet 20, and the foot outlet 21 of the duct 2. The vent damper 9 and the foot damper 10 are selectively opened and closed by the servomotors 17 and 18 to provide a vent mode for sending cool air from the vent outlet 20 to the occupant's upper body and face, and a bi-level for comfortable heating of head and foot heat. The air outlet mode is switched between a mode, a foot mode for performing indoor heating, and a foot / diff mode for performing indoor heating and removing fogging of a windshield.

FIG. 2 is a view showing an operation panel P of the automobile air conditioner 1. As shown in FIG. The operation panel P is provided on an instrument panel (not shown) in front of the driver's seat in the vehicle interior. The operation panel P includes an auto switch 2
2. Off switch 23, temperature setting switch 24, inside / outside air changeover switch 26, air conditioner switch 27, air volume setting switches 28-30, and outlet setting switches 31-34
Is provided. The auto switch 22 is a switch for selecting one of the above-described automatic control for automatically controlling each air conditioner based on a predetermined control program and manual control for fixing each of the manual switches to a set state. The off switch 23 is used to activate the auto air conditioner 1 for a vehicle.
This is a switch for inputting a stop command.

The temperature setting switch 24 is a manual setting means of the present invention, and is a switch for setting the temperature in the passenger compartment to a desired temperature. In the vicinity of the temperature setting switch 24,
An indicator 25 for displaying the set temperature set by the temperature setting switch 24 is provided. Inside / outside air changeover switch 26
Is a manual setting means of the present invention, which is a switch for fixing the inside / outside air mode to either the inside air circulation mode or the outside air introduction mode. The inside / outside air changeover switch 26 has a display 26a that lights up when the inside / outside air mode is the inside air circulation mode, and a display 2 that lights up when the inside / outside air mode is the outside air introduction mode.
6b is provided.

The air conditioner switch 27 is a manual setting means of the present invention, and is a switch for manually switching the operation and stop of the refrigeration cycle, that is, for turning on (energizing) the electromagnetic clutch of the compressor and stopping (off) energizing. This is a switch that is manually switched. Air conditioner switch 2
7 is provided with an indicator 27a for recognizing the operation of the compressor, whether it is stopped, that is, whether the electromagnetic clutch is turned on or off, by turning on or off.
The air volume setting switches 28 to 30 are manual setting means of the present invention. In this example, the air volume level of the blower 4 is set to a strong wind (H
i) A switch for fixing to one of medium wind (Me) and low wind (Lo). In addition, the air volume setting switches 28 to 30
The air flow level of the blower 4 is changed to strong wind (Hi) / medium wind (M
e) Hi display 28a, Me display 29 to make it recognized by lighting either of low wind (Lo)
a, Lo indicator 30a is provided.

The outlet setting switches 31 to 34 are manual setting means of the present invention, and are switches for fixing the outlet mode to any one of a vent mode, a bi-level mode, a foot mode, and a foot / diff mode. . The outlet setting switches 31 to 34 are provided with indicators 31a to 34a for recognizing by lighting that the outlet mode is any of the vent mode, the bi-level mode, the foot mode, and the foot / diff mode. ing. Note that on the upper side of the display 25 of the operation panel P,
A learning indicator 41 is provided which lights when the air conditioner is automatically controlled based on the result of learning the amount of manual operation from the temperature setting switch 24 during the automatic control. On the upper side of the inside / outside air changeover switch 26 in the operation panel P, the inside / outside air changeover damper 3 is automatically set via the servomotor 11 based on the result of learning the manual operation amount from the inside / outside air changeover switch 26 during the automatic control. A learning indicator 42 that is turned on when controlling is provided.

On the upper side of the air conditioner switch 27 in the operation panel P, a learning indicator which lights up when the compressor is automatically controlled based on the result of learning the manual operation amount from the air conditioner switch 27 during the automatic control. 4
3 are installed. Further, on the upper side of the air volume setting switch 29 of the operation panel P, the rotation of the blower motor 14 via the blower driving circuit 13 is determined based on the result of learning one of the air volume setting switches 28 to 30 during the automatic control. A learning indicator 44 that lights up when the number is automatically controlled is provided. The servo motor 1 based on the result of learning one of the outlet setting switches 31 to 33 during the automatic control is provided above the outlet setting switches 32 and 33 of the operation panel P.
Vent damper 9 and foot damper 1 via 7 and 18
A learning indicator 45 that lights up when 0 is automatically controlled is provided. Each of the learning indicators 41 to 45 is a learning display unit of the present invention, and uses a display element such as an LED or a liquid crystal element. Also, the learning indicators 41 to 45
Is installed in combination with a frame to clarify its distinction from other controls.

The selection signal selected on the operation panel P is read into the microcomputer 50. The microcomputer 50 controls the operation panel P, the inside air sensor 51, the outside air sensor 52, the solar radiation sensor 53, the post-evaporation temperature sensor 54, and the water temperature sensor 55 through the A / D converter 56 and the input signals. Based on the program, the servo motor 11, the blower drive circuit 13,
Each air conditioner such as the servomotors 15 to 18 is controlled to air-condition the vehicle interior. The inside air sensor 51 detects the actual temperature in the vehicle compartment and outputs it as an inside air temperature detection signal. Outside air sensor 5
2 detects the actual temperature outside the vehicle compartment and outputs it as an outside air temperature detection signal. The solar radiation sensor 53 detects the actual amount of solar radiation into the vehicle compartment and outputs it as a solar radiation detection signal. The post-evaporation temperature sensor 54 detects the actual temperature at the air outlet of the evaporator 5 and outputs it as a post-evaporation temperature detection signal. The water temperature sensor 55 detects the actual temperature of the cooling water of the engine cooling system of the vehicle and outputs the detected temperature as a water temperature detection signal.

The A / D converter 56 includes an inside air temperature detection signal from the inside air sensor 51, an outside air temperature detection signal from the outside air sensor 52, a sunshine detection signal from the solar irradiation sensor 53, and a post-evaporation temperature from the post-evaporation temperature sensor 54. The microcomputer 50 converts the detection signal and the analog signal such as the water temperature detection signal from the water temperature sensor 55 into digital signals representing the internal temperature Tr, the external temperature Tam, the amount of solar radiation Ts, the post-evaporation temperature Te, and the water temperature Tw. Output. The microcomputer 50 includes a RAM 57, an EEPROM 58, and a CP.
U59 and the like, and is supplied with power from a battery 61 via an ignition switch 60. The RAM 57 is a memory that can read and write data, and is used to hold temporary data that appears during processing.

The EEPROM 58 is a storage means of the present invention, and includes an arithmetic expression for the target blow-off temperature TAO, an arithmetic expression for the target opening degree SW of the air mix damper 6, initial data of inside / outside air mode control characteristics (see FIG. 3), The initial data of the outlet mode control characteristics (see FIG. 4), the initial data of the compressor control characteristics (see FIG. 5), the initial data of the blower control characteristics (see FIGS. 6 to 8), and FIGS. It is a memory that stores and retains control programs, does not lose its memory even when the power is turned off, and is rewritable. The CPU 59
The automatic control means and the characteristic changing means of the present invention perform calculations and processes on input signals and the like based on a control program stored in the EEPROM 58 as described later.

Next, a description will be given of the blowout temperature control when the auto switch 22 is turned on, that is, when the automatic control is selected. The CPU 59 calculates the target outlet temperature TAO by the following equation (1).

TAO = Kset Tset-KR Tr-KAM Tam-KS Ts + C where Kset is the temperature setting gain, Tset is the temperature set by the temperature setting switch 24, KR is the inside temperature gain, and Tr is the inside air sensor 51. , KAM is the outside air temperature gain, Tam is the outside air temperature of the outside air sensor 52, KS is the insolation gain, Ts is the insolation amount of the insolation sensor 53, and C is a correction constant.

Next, the CPU 59 calculates the target opening degree SW of the air miss damper 6 when the automatic control is selected by the following equation (2).

SW = {(TAO−Te) / (Tw−Te)} × 100 (%) where Te is the post-evaporation temperature of the post-evaporation temperature sensor 54, Tw
Is the water temperature of the water temperature sensor 55. The air mix damper 6 is controlled by the servo motor 15 so that the actual opening becomes the target opening SW. Thus, the temperature of the air blown into the vehicle compartment is controlled based on the set temperature. In the case of having independent ducts on the left and right sides, a function may be provided in which the temperature of the air blown from the left and right ducts is changed by adjusting means and blown out based on environmental conditions such as the amount of solar radiation.

Next, the inside / outside air mode control when the automatic control is selected will be described. The control state of the inside / outside air switching damper 3 is determined by the inside / outside air mode control characteristic based on the target blowing temperature TAO shown in FIG. The inside / outside air switching damper 3 is driven by the servomotor 11 so as to be in the determined inside air circulation mode and outside air introduction mode. In this example,
It has a function of switching from the inside air circulation mode to the outside air introduction mode and a function of switching from the outside air introduction mode to the inside air circulation mode. In the inside / outside air mode control, a mode for simultaneously introducing inside air and outside air may be added.

Next, the outlet mode control when the automatic control is selected will be described. The control state of the vent damper 9 and the foot damper 10 is determined by the outlet mode control characteristics based on the target outlet temperature TAO shown in FIG. Then, the vent damper 9 and the foot damper 10 are driven by the servo motors 17 and 18 so as to be in the determined vent mode, bi-level mode, and foot mode. In this embodiment, a function for switching from the foot mode to the bi-level mode,
It has a function of switching from the bilevel mode to the foot mode, a function of switching from the bilevel mode to the vent mode, and a function of switching from the vent mode to the bilevel mode. Note that the defroster mode, the differential foot mode, and the like may also be controlled based on the target outlet temperature TAO.

Next, the compressor control (frost cut control) when the automatic control is selected will be described. The control state of the compressor (ON / OFF of the compressor to the electromagnetic clutch) is determined by a compressor control characteristic based on the post-evaporation temperature Te of the post-evaporation temperature sensor 54 shown in FIG. Then, when the post-evaporation temperature Te of the post-evaporation temperature sensor 54 falls below Toff (e.g., 3 ° C.), the CPU 59 turns off the compressor by turning off the electromagnetic clutch of the compressor. In addition, the CPU 59
Turns on the compressor by turning on the electromagnetic clutch of the compressor when the post-evaporation temperature Te of the post-evaporation temperature sensor 54 rises above Ton (corresponding to, for example, 4 ° C.).

Next, the blower control (blower TAO control) when the automatic control is selected will be described with reference to FIG. Here, FIG. 6 is a graph showing a TAO control characteristic for controlling the blower level based on the target outlet temperature TAO, and the target outlet temperature TAO is minus (-) in the summer season (the amount of solar radiation is large and the outside air temperature is high). ), The vehicle air conditioner 1 is operated for cooling operation, and the target outlet temperature TAO becomes a plus (+) value in winter (the amount of solar radiation is small and the outside air temperature is low). (A) in the figure shows the initial data of the TAO control characteristics stored in the EEPROM 58 in advance, and (b) in the figure shows the changed data of the TAO control characteristics according to the occupant's preference.

The air volume of the blower 4 (blower level, voltage applied to the blower motor 14) is determined by the ignition switch 60
Is turned on, the delay control time (t0 → t3) (see FIG. 7) has elapsed, or after the water temperature detected by the water temperature sensor 55 has risen above the set water temperature Tw2 (see FIG. 8), the EEPROM 58 It is determined by the TAO control characteristic based on the target outlet temperature TAO shown in FIG. 6 and stored in advance. In the blower control based on the TAO control characteristic, the blower level is divided into 15 stages from 1 to 15 and controlled. Then, the blower 4 is automatically controlled by the CPU 59 via the blower drive circuit 13 based on the determined TAO control characteristics. Note that CP
When the air volume setting switch 28 is manually operated while the auto switch 22 is turned on, the blower level set at the air volume setting switch 28 has priority. It issues a command to the circuit 13. Further, the TAO control characteristics of the blower 4 may have different characteristics depending on the vent mode, the bi-level mode, and the foot mode. Further, the defroster mode, the differential foot mode, and the like may have different TAO control characteristics of the blower 4. You may do it.

Next, the blower control when the automatic control is selected (the blower delay control at the start of the cooling operation) will be described with reference to FIG. Here, FIG. 7 is used for the purpose of preventing the occupant from feeling uncomfortable due to the hot air blowing immediately after the ignition switch 60 is turned on when the air outlet mode is the vent mode, that is, when the cooling operation is started in summer when the heat load in the vehicle interior is large in summer. 5 is a graph showing a slow control characteristic. The air volume of the blower 4 at the start of the cooling operation (blower level, voltage applied to the blower motor 14) is determined based on the delay control characteristics shown in FIG.
The blower level is set to the ignition switch 60.
It changes from a weak wind to a strong wind depending on the elapsed time from ON.

More specifically, the ignition switch 60
Is turned on from time t0 to time t1 (t0 → t1).
: For example, for 8 seconds), the blower motor 14 is turned off. Then, during the period from time t1 to time t2 (t1 → t2: for example, 2 seconds), the blower motor 14 is turned on so that the blower level "2" is obtained. During the period from time t2 to time t3 (t2 → t3: 5 seconds, for example), the voltage applied to the blower motor 14 is gradually increased so that the blower level changes from "2" to "15". Thereafter, the blower level is controlled based on the TAO control characteristic (see FIG. 6).

Next, the blower control (water temperature control at the start of the heating operation) when the automatic control is selected will be described with reference to FIG. Here, FIG. 8 shows the water temperature control used for the purpose of preventing the occupant from feeling unpleasant due to the blowing of cool air immediately after the ignition switch 60 is turned on when the outlet mode is other than the vent mode, for example, in the foot mode, that is, at the start of the heating operation in winter. 4 is a graph showing characteristics. The air volume of the blower 4 at the start of the heating operation (blower level, blower motor 14
Is determined based on the water temperature control characteristic shown in FIG. 8 and stored in the EEPROM 58 in advance. Then, the blower level changes from a weak wind to a strong wind according to the water temperature.

More specifically, the blower motor 14 is turned off when the water temperature detected by the water temperature sensor 55 has fallen below a predetermined water temperature Tw1 (for example, 50 ° C.). Then, when the water temperature detected by the water temperature sensor 55 exceeds the predetermined water temperature Tw1, the blower motor 14 is turned on so that the blower level becomes "1". After the water temperature detected by the water temperature sensor 55 exceeds the predetermined water temperature Tw1, the set water temperature T
Until w2 is reached, the voltage applied to the blower motor 14 is gradually increased so that the blower level changes from "1" to "14". When the water temperature detected by the water temperature sensor 55 rises above the set water temperature Tw2 (for example, 70 ° C.), the blower level is controlled based on the TAO control characteristic (see FIG. 6).

Next, the characteristic change control and the learning display control when the automatic control is selected will be described. In the CPU 59, the temperature setting switch 24, the inside / outside air changeover switch 26, the air conditioner switch 27, the air volume setting switch 2, while the air conditioner is automatically controlled based on the above control characteristics.
When any of the manual switches 8 to 30 or the outlet setting switches 31 to 34 are manually operated.
At 量 shown in (b), the operation amount or setting state of the manual switch is learned. Then, the CPU 59 outputs a command to the EEPROM 58 to change and store the control characteristic of the air conditioner whose control state is changed by the manual switch so as to obtain the control characteristic (learning characteristic) based on the learning result. . Then, the EEPROM 58 stores control characteristics (learning characteristics) based on the learning result. In addition, the CPU 59
Outputs the learning display signal to the learning indicators 41 to 45 corresponding to the manual switch when the current control state of the air conditioning means is the control state based on the learning result at the time of the automatic control selection. The occupant is made aware that the control state is control that reflects the occupant's preference.

[Operation of the Embodiment] Next, the operation of the automotive air conditioner 1 will be briefly described with reference to FIGS. FIG. 9 is a flowchart showing a basic control program by the CPU 59. This flowchart is started when the ignition switch 60 is turned on. First, various data and initial values of flags are set. In this embodiment, a delay control flag is set, and a control timer (not shown) for measuring an elapsed time from the start of the operation of the automotive air conditioner 1 (the ignition switch 60 is turned on) is cleared ( Step S1).

Next, the auto switch 22, the air conditioner switch 27, the temperature setting switch 24, and the air volume setting switch 2
Operation signals of various operation switches provided on the operation panel P such as 8 are read into the RAM 57. Further, the internal temperature Tr of the internal air sensor 51, the external temperature Tam of the external air sensor 52, the amount of solar radiation Ts of the solar radiation sensor 53, the post-evaporation temperature Te of the post-evaporation temperature sensor 54, and the water temperature Tw of the water temperature sensor 55 are read into the RAM 57 (step S2). ). Next, according to the above-described equation 1 stored in the EEPROM 58, the target outlet temperature TA
O is calculated and stored in the RAM 57 (step S3).
The target opening degree SW of the air mix damper 6 is calculated according to the above-described equation 2 stored in the EEPROM 58,
A control signal is output to the servo motor 15 that drives the air mix damper 6 so as to obtain the calculated target opening degree SW (step S4).

Next, processing is performed according to the blower control subroutine of FIG. 10 (step S5), and the EEPROM is executed.
A servo that drives the inside / outside air switching damper 3 so as to determine the inside / outside air introduction ratio based on the inside / outside air mode control characteristics (see FIG. 3) stored in 58 and obtain the determined inside / outside air introduction ratio. A control signal is output to the motor 11 (Step S6). Next, the air outlet mode is determined based on the air outlet mode control characteristics (see FIG. 4) stored in the EEPROM 58, and a servo motor that drives the vent damper 9 and the foot damper 10 to obtain the determined air outlet mode. The control signal is output to 17 and 18 (step S7). Next, on / off of the compressor is determined based on the compressor control characteristics (see FIG. 5) stored in the EEPROM 58, and a control signal is output to the compressor so as to obtain the determined state (step S).
8). Thereafter, the process returns to the control of step S2, and the above-described calculation and processing are repeated.

Next, the characteristic change control and the learning display control of the CPU 59 of this embodiment will be described with reference to FIGS.
The control will be briefly described as an example. The TAO control characteristic, the delay control characteristic, and the water temperature control characteristic shown in FIGS. 6 to 8 are control characteristics that are set in advance so that the majority of users are satisfied on average. The control characteristics are not always satisfactory depending on individual differences and usage conditions. Therefore, air volume setting switches 28 to 30 are prepared so that the blower level (air volume of the blower 4) can be set to the occupant's preference by manual setting. In the automatic air conditioner 1 for a vehicle according to the present embodiment, when the blower 4 is automatically controlled, manual setting by the air volume setting switches 28 to 30, for example, when the correction for the TAO control characteristic is performed as shown in FIG. To learn.

Then, a command is issued to the EEPROM 58 to change and store the TAO control characteristic based on the learning result of the correction amount, that is, the control characteristic shown in FIG. 6B. As a result, at the time of automatic control of the blower 4 thereafter, the control is performed using the changed control characteristics, and the learning indicator 44 is turned on to perform the automatic control based on the result of learning the correction amount by the manual setting. Make the crew aware of this. In this embodiment, the lighting of the learning display 44 is
If manual setting is performed during the control based on the delay control characteristic (see FIG. 7) or the water temperature control characteristic (see FIG. 8), the control is performed so that the light is turned on only during the delay control characteristic or the water temperature control characteristic.

Next, the characteristic change control and the learning display control of the CPU 59 of this embodiment will be described in detail based on the blower control subroutine shown in FIG. Here, FIG.
59 is a flowchart showing a blower control subroutine by No. 59. This flowchart corresponds to step S in FIG.
When the process of No. 4 is completed, the calculation and the process are started. When the process in step S5 is started, first, it is determined whether or not the operation of the automotive auto air conditioner 1 is prohibited by the off switch 23 of the operation panel P (step S11).
If the result of the determination in step S11 is Yes, that is, if the operation of the automotive air conditioner 1 is prohibited, the Hi display 28a, the Me display 29a,
All the Lo indicators 30a are turned off, and the operation of the blower drive circuit 13 is prohibited (blower level = 0) (step S1).
2). Then, the blower control is terminated, and then, step S6
Move on to processing.

If the result of the determination in step S11 is No, that is, if the operation of the automotive auto air conditioner 1 is not prohibited, whether the auto switch 22 of the operation panel P is turned on, that is, It is determined whether or not the automatic control of the blower 4 is being performed (step S13). If the result of the determination in step S13 is Yes, that is, if the automatic control of the blower 4 is being performed, it is determined whether or not the outlet mode is set to the vent mode. That is, it is determined based on the value of the target outlet temperature TAO whether or not the environmental condition affecting the air conditioning state in the vehicle compartment is the cooling operation under the summer condition (step S14). If the determination result of step S14 is Yes, that is, if the outlet mode is set to the vent mode, it is delayed whether or not the operation of the automotive auto air conditioner 1 has just started (the ignition switch 60 is turned on). A determination is made based on whether the motion flag is set (step S15). The delay flag is a timer flag that is set in the initial setting of step S1. As shown in FIG. 7, the time t3 has elapsed from the time t0 when the operation of the automotive air conditioner 1 is started (ignition switch 60 is turned on). Then it is reset.

If the determination result of step S15 is Yes, that is, if the delay flag is set, the blower level f1 calculated from the TAO control characteristic of FIG. 6 and the delay control of FIG. The smaller one of the blower level f2 calculated from the characteristic is output to the blower drive circuit 13 as a blower control signal (step S16). By the process in step S16, under summer conditions in which the amount of solar radiation is large and the internal temperature and the external temperature are high, the value of the target outlet temperature TAO becomes a value that largely fluctuates in the negative direction. For this reason, the blower level (the voltage applied to the blower motor 14) is controlled based on the delay control characteristic of FIG. 7 until immediately after the start of the operation of the automotive air conditioner 1 (ignition switch 60 is turned on) and the time t3 elapses. . Thereby, it is possible to prevent the occupant from feeling uncomfortable due to the hot air generated by the heat storage amount of the duct 2 and the like being blown out from the vent outlet 20 by strong wind.

Next, a delay control flag indicating that delay control is being performed is set (step S17), and step S3 is performed.
5. It is determined whether or not a delay control learning flag indicating that the learning of the delay control characteristic has been performed in the process of S36 is set (step S18). If the determination result of step S18 is Yes, that is, if the delay control learning flag is set, the learning indicator 44 is turned on (step S19). Then, the blower control ends, and the process proceeds to step S6. If the determination result of step S18 is No, that is, if the delay control learning flag is not set, the learning display 44 is turned off (step S20). Then, the blower control ends, and the process proceeds to step S6.

If the result of the determination in step S15 is No, that is, if the delay flag is not set, the blower level f1 calculated from the TAO control characteristic in FIG. Drive circuit 13
(Step S21). Next, a TAO control flag indicating that TAO control is being performed is set (step S22), and whether a TAO control learning flag indicating that learning of the TAO control characteristic has been performed in the processing of steps S40 and S41 is set. Is determined (step S2).
3). If the determination result of step S23 is Yes, that is, if the TAO control learning flag is set, the process of step S19 is performed. Also,
If the determination result of step S23 is No, that is, if the TAO control learning flag is not set, the process of step S20 is performed.

If the result of the determination in step S14 is No, that is, if the outlet mode is not set to the vent mode, the cooling water from the engine cooling system, which is a heat source during the heating operation, is used. The temperature (water temperature Tw detected by the water temperature sensor 55) is the set water temperature Tw2 (for example, 70 ° C.)
It is determined whether the temperature has further decreased (step S2).
4). If the determination result of step S24 is No, that is, if the water temperature Tw detected by the water temperature sensor 55 has risen to the set water temperature Tw2 or more, the process of S21 is performed. In addition, the determination result of step S24 is Ye
In the case of s, that is, when the water temperature Tw detected by the water temperature sensor 55 is lower than the set water temperature Tw2, the blower level f1 calculated from the TAO control characteristic of FIG. 6 and the water temperature control characteristic of FIG. Is output to the blower drive circuit 13 as the blower control signal (step S25).

By the process in step S25, under winter conditions where the inside air temperature and the outside air temperature are low, the value of the target outlet temperature TAO becomes a value that fluctuates to the plus side. For this reason, the coolant temperature Tw of the engine cooling water becomes the set coolant temperature Tw2 (for example, 70
(° C.), the blower level (voltage applied to the blower motor 14) is controlled based on the water temperature control characteristic of FIG. Accordingly, it is possible to prevent the occupant from feeling uncomfortable due to the strong wind blowing out of the foot outlet 21 or the like due to the shortage of the heat source during the heating operation. Next, a water temperature control flag indicating that the water temperature is being controlled is set (step S2).
6) It is determined whether or not a water temperature control learning flag indicating that the learning of the water temperature control characteristics has been performed in the processing of steps S38 and S39 is set (step S27). If the determination result in step S27 is Yes, that is, if the TAO control learning flag is set, the process in step S19 is performed. If the determination result of step S27 is No, that is, TAO
If the control learning flag has not been set, the process of step S20 is performed.

When the result of the determination in step S13 is No, that is, when the automatic control of the blower 4 is not performed, it is determined whether or not the air volume setting switch (Lo switch) 30 is manually operated (ON). Is determined (step S28). If the determination result in step S28 is Yes, that is, the air volume setting switch (Lo switch)
When the switch 30 is turned on, the Lo indicator 30a is turned on, the blower level is set to the Lo level (blower level = Lo), and the blower control signal of the Lo level is output to the blower drive circuit 13 (step). S29). After that, the process of step S33 is performed. Step S
If the determination result at 28 is No, that is, if the air volume setting switch (Lo switch) 30 is not turned on, it is determined whether or not the air volume setting switch (Me switch) 29 is manually operated (on). Judge (Step S3
0).

If the result of the determination in step S30 is Yes, that is, if the air volume setting switch (Me switch) 29 is on, the Me indicator 29a
Is turned on, the blower level is set to the Me level (blower level = Me), and the blower control signal of the Me level is output to the blower drive circuit 13 (step S31). After that, the process of step S33 is performed. If the determination result of step S30 is No, that is, if the air volume setting switch (Me switch) 29 is not turned on, the Hi indicator 28a is turned on, and the blower level is set to the Hi level (blower level). Level = Hi) and the H
An i-level blower control signal is output to the blower drive circuit 13 (step S32). In this embodiment, when the air volume setting switch 30 is turned on, the blower control signal of the blower level “1” is output and the air volume setting switch 2
When the switch 9 is turned on, the blower control signal of the blower level “7” is output, and when the air volume setting switch 28 is turned on, the blower control signal of the blower level “15” is output.

Next, it is determined whether or not the current blower control is the first processing in which the automatic control has been changed to the manual control (step S33). If the determination result in step S33 is No, that is, if it is not the first process, the blower control ends, and the process proceeds to step S6. If the determination result of step S33 is Yes, that is, if it is the first process, it is determined whether or not the delay control flag is set (step S34). If the determination result of step S34 is Yes, that is, if the delay control flag is set, the delay control characteristics are changed (step S35).
A delay control learning flag is set (step S36).
Thereafter, the blower control is terminated, and the process proceeds to step S6.

If the result of the determination in step S34 is No, that is, if the delay control flag has not been set, it is determined whether or not the TAO control flag has been set (step S37). This step S3
If the determination result of No. 7 is No, that is, if the TAO control flag is not set, the water temperature control characteristic is changed (step S38), and the water temperature control learning flag is set (step S39). Thereafter, the blower control is terminated, and the process proceeds to step S6. Step S
If the determination result at Step 37 is Yes, that is, TAO
If the control flag is set, the TAO control characteristic is changed (step S40), and the TAO control learning flag is set (step S41). Thereafter, the blower control is terminated, and the process proceeds to step S6.

Next, the characteristic change control will be described with an example of changing the TAO control characteristic. As the TAO control characteristic, initial data (a) including the inflection points A to H shown by the solid line in FIG. The blower level f1 is calculated by linear interpolation between the inflection points A and B of the initial data (a), and the voltage applied to the blower motor 14 is controlled so as to reach the blower level f1. here,
Assuming that the manual operation as shown in FIG. 6 is performed at the time of the target blowing temperature TAO value m, the inflection point d closest to the change data (b) indicated by the two-dot chain line in FIG. The change is stored and changed so as to be controlled by the change data (b). After the TAO control characteristics have been changed as described above,
Set the TAO control learning flag. As described above, the changed TAO control characteristics become effective at the next automatic control. Note that the changes in the delay control characteristic and the water temperature control characteristic are also changed in the same manner as the above-described TAO control characteristic. The same applies to the outlet mode control characteristics, the inside / outside air mode control characteristics, the compressor control characteristics, and the outlet temperature control characteristics.

Next, the learning display control will be described using the learning display of the TAO control characteristic as an example. Fig. 6 shows the current blower control.
If the control state is controlled by the change data (b) indicated by the two-dot chain line, that is, the control state is within the learning range of the honey'-ho shown in FIG. 6, the TAO learning control signal is learned. Output to the display 44 to light the learning display 44. Further, the current blower control is controlled by the initial data (a) shown by the solid line in FIG. 6, that is, within the range of the eraser shown in FIG. If the control state is within the range, the learning indicator 44 is turned off. The learning display of the delay control characteristic and the water temperature control characteristic is also changed in the same manner as the above-described TAO control characteristic. The same applies to the outlet mode control characteristics, the inside / outside air mode control characteristics, the compressor control characteristics, and the outlet temperature control characteristics.

[Effects of the Embodiment] As described above, in this embodiment, the taste of the sense of temperature and the sense of noise according to the individual difference of the occupants are determined by the blower control characteristic, the air outlet mode control characteristic, the inside / outside air mode control characteristic, and the like. Since this is reflected in the compressor control characteristics and the blow-out temperature control characteristics, it is possible to obtain comfortable automatic control according to the individual differences of the occupants. As a result, the air volume setting switches 28 to 30 each time the automobile air conditioner 1 is operated.
Can be prevented from having to manually operate such a manual switch.

In this embodiment, the EEPROM 58
Automatic control based on blower control characteristics, air outlet mode control characteristics, inside / outside air mode control characteristics, compressor control characteristics, and blow-out temperature control characteristics stored in advance, and automatic control based on characteristics based on learning control reflecting passenger preferences. Can be easily identified by the learning indicators 41 to 45. As a result, it is possible to prevent an occupant from performing an excessive manual operation during the automatic control of the automotive air conditioner 1. In addition, it is possible to eliminate the distrust of the auto control of the auto air conditioner 1 for the automobile, and even if the same blower control is performed, it is possible to determine each control such as the blower TAO control, the blower delay control, and the blower water temperature control. it can. Therefore, the learning (personalization) ratio of each control can be recognized,
Satisfaction can be obtained.

[Modification] In this embodiment, the EEPROM 5
Although the learning result is stored in the memory 8, the learning result may be stored in the RAM to which the operating voltage is supplied when the power is turned off by the storage device holding battery.
Further, any storage means may be used as long as it stores the learning result even when the power supply to the storage means is cut off, such as when the ignition switch is turned off or the vehicle-mounted battery is removed. In the present embodiment, a predetermined T
Although the configuration is such that only the inflection point of the AO control characteristic is learned, learning may be performed such that the learning point is provided at certain time intervals. Also,
The learning points may be provided for the number of times the manual switches such as the air volume setting switches 28 to 30 are changed during the automatic control.

In this embodiment, the air volume setting switches 28 to 3
The case where the control characteristic is changed only once by a manual switch such as 0 has been described. However, if the change is performed again at the time of the automatic control after the change, even if the control characteristic does not suddenly change due to the averaging process or the like. good. In the present embodiment, each air conditioner is automatically controlled based on the target outlet temperature TAO at the time of the outlet temperature control, the inside / outside air mode control, the outlet mode control, and the blower control, but without using the target outlet temperature TAO at each control. The air conditioner may be automatically controlled based on a detection signal of an environmental condition detector that detects an environmental condition affecting the air condition in the vehicle compartment.

In the present embodiment, the learning indicators 41 to 45 are installed near the manual switch for each control in combination with a frame for clarifying the discrimination from other controls, but as shown in FIG. A learning indicator for each of the blowout temperature control, the blower control, the blowout mode control, and the inside / outside air mode control may be arranged in one place. In this case, as shown in FIG. 11, the control based on the control characteristics stored in advance is displayed as "normal" and the control based on the control characteristics based on the learning result (learning characteristics) is displayed as "personal". "May be displayed. Further, the learning display means may have any structure as long as it has a structure capable of identifying whether or not the control is based on the current learning characteristic for each control. Further, the blowout temperature control, the blower control, the blowout mode control, the inside / outside air mode control, and whether or not each of these functions is under learning control may be displayed using a ratio or the like.

[0055]

According to the present invention, it is possible to easily recognize whether or not the automatic control reflecting the user's sense of temperature and noise is performed. It is possible to prevent excessive manual operation by the user, and to eliminate distrust of the automatic control of the air conditioning means.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an automobile air conditioner using the present invention.

FIG. 2 is a plan view showing an operation panel of the apparatus shown in FIG. 1;

FIG. 3 is a graph showing a relationship between a target outlet temperature and an inside / outside air mode.

FIG. 4 is a graph showing a relationship between a target outlet temperature and an outlet mode.

FIG. 5 is a graph showing a relationship between a post-evaporation temperature and an operating state of a compressor.

FIG. 6 is a graph showing a relationship between a target blowout temperature and a blower level.

FIG. 7 is a graph showing the relationship between the elapsed time from the start of operation of the apparatus and the blower level.

FIG. 8 is a graph showing a relationship between a cooling water temperature and a blower level.

FIG. 9 is a flowchart showing a basic control program of a control device of the device shown in FIG. 1;

FIG. 10 is a flowchart showing a blower control subroutine by a CPU.

FIG. 11 is a schematic view showing a modified example of the display device of the automotive air conditioner.

FIG. 12 is a block diagram showing a schematic configuration of the present invention.

[Explanation of symbols]

 Reference Signs List 1 auto air conditioner for vehicle (vehicle air conditioner) 3 inside / outside air switching damper (air conditioner) 4 blower (air conditioner) 6 air mix damper (air conditioner) 8 differential damper (air conditioner) 9 vent damper (air conditioner) 10 foot damper ( Air conditioning means) 24 temperature setting switch (manual setting means) 26 inside / outside air changeover switch (manual setting means) 27 air conditioner switch (manual setting means) 28 air volume setting switch (manual setting means) 29 air volume setting switch (manual setting means) 30 air volume Setting switch (manual setting means) 31 Air outlet setting switch (manual setting means) 32 Air outlet setting switch (manual setting means) 33 Air outlet setting switch (manual setting means) 34 Air outlet setting switch (manual setting means) 41 Learning display Learning device (learning display means) 42 learning display device (learning display means) 43 Learning indicator (learning display means) 44 Learning indicator (learning display means) 45 Learning indicator (learning display means) 58 EEPROM (storage means) 59 CPU (automatic control means, characteristic change means)

──────────────────────────────────────────────────続 き Continued on the front page (56) References JP-A-3-54015 (JP, A) JP-A-57-151412 (JP, A) JP-A-3-19705 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) B60H 1/00 101 B60H 1/00 103

Claims (1)

(57) [Claims] 1. An air conditioner for air-conditioning the interior of a vehicle, (b) a storage device for storing control characteristics of the air conditioner, and (c) a control device based on the control characteristics stored in the storage device. Automatic control means for automatically controlling the control state of the air conditioner; (d) manual setting means for fixing the control state of the air conditioner based on the setting state by manual operation; and (e) automatic control by the automatic control means. When the manual setting unit is manually operated, the setting state of the manual setting unit is learned, and the control characteristic of the air conditioning unit stored in the storage unit is changed and stored based on the learning result. A characteristic changing unit; and (f) a learning display unit for displaying whether the automatic control by the automatic control unit is an automatic control based on the control characteristic changed by the characteristic changing unit. Sum apparatus.