JP2001310610A - Air conditioning device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize good air conditioning by preventing abrupt change of air conditioning control quantity in an air conditioning device for vehicle in which air conditioning control quantity is operated based on a memorized set temperature, that is derived from learning a crew set temperature relating with the surrounding condition. SOLUTION: A memorized set temperature used for operating an air conditioning control quantity is modified with the change of surrounding condition and when the difference of memorized set temperature prior to and post modification ΔTset is larger than β (namely, step S106 is 'NO'), corrected set temperatures are set up that are gradually changed starting from a temperature not far from an initially memorized set temperature to a temperature not far from the memorized set temperature post modification at the steps S106F, J and K. An air conditioning control quantity is operated based on a corrected set temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner having a so-called auto air conditioner function for automatically controlling the air conditioning state of a vehicle interior based on a set temperature. Regarding control.

[0002]

2. Description of the Related Art A vehicle air conditioner for performing this kind of learning control has been disclosed in Japanese Patent Application Laid-Open No. 3-42325. In the conventional apparatus, when an operation of changing the set temperature of the occupant is performed, the occupant set temperature after the change is learned as it is in association with environmental conditions such as the outside air temperature and the inside air temperature, and the air conditioning control is performed based on the set temperature after the learning. Like that.

[0003]

However, in the above-mentioned conventional apparatus, the set temperature is set to, for example, 25 ° C. under a certain environmental condition.
When the air conditioning control amount such as the blow-out air volume or the blow-out air temperature changes greatly when the temperature is changed from 18 ° C. or from 18 ° C. to 25 ° C., the set temperature set by the occupant is learned as it is. There has been a problem that the air-conditioning control amount changes abruptly under the same environmental conditions during operation, and does not match the occupant's feeling, or the occupant feels discomfort.

[0004] That is, the change of the air conditioning control amount when the set temperature is changed is not a problem because it is caused by the operation of the occupant. However, during the automatic air conditioning control based on the set temperature after learning, the air conditioning control amount is not intended by the occupant. Greatly changes, the above-described problem occurs.

On the other hand, at the time of so-called cool-down control immediately after the start of air conditioning in summer, even if the set temperature is, for example, 25.degree.
However, since the maximum cooling operation is performed, the air-conditioning control amount such as the amount of the blown air and the temperature of the blown air do not change. However, if the set temperature is lowered from 25 ° C. to 18 ° C., for example, it is thought that the set temperature becomes cooler. May be changed. Then, when the set temperature is set to 18 ° C. at the beginning of the cool down, and the set temperature is returned to 25 ° C. on the way, if the maximum cooling operation is still being performed (if the air conditioning control amount does not change), the set temperature is set to 18 ° C. There is no point in learning. However, in the above-described conventional apparatus, there is a problem that the memory of the storage unit is wasted because the set temperature which is meaningless even if learned is learned.

The present invention has been made in view of the above points, and learns and stores an occupant set temperature set by an occupant in association with an environmental condition, and based on the stored set temperature, determines the air conditioning state of the vehicle interior. It is an object of the present invention to realize a comfortable air conditioning control by preventing a sudden change in an air conditioning control amount in a vehicle air conditioner to be automatically controlled.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, a temperature setting means (38) for setting a temperature in a passenger compartment desired by an occupant, and a temperature setting means (38). 38) The occupant set temperature set by the occupant in
A storage unit (31b) for learning and storing in association with an environmental condition affecting the air conditioning state in the vehicle cabin;
1b) calculating means for calculating an air-conditioning control amount based on the stored temperature corresponding to the environmental condition among the many stored temperatures stored in 1b), based on the calculation result of the calculating means (31a). In a vehicle air conditioner that automatically controls an air conditioning state in a vehicle cabin, a storage set temperature used for calculating an air conditioning control amount is changed according to a change in environmental conditions, and a difference between the storage set temperature before and after the change is a predetermined value. In the above case, a correction set temperature different from the stored set temperature is set, and the air conditioning control amount is calculated based on the corrected set temperature.

According to this, the correction set temperature is gradually changed from a value close to the storage set temperature before the change to a value close to the storage set temperature after the change, as in the second aspect of the present invention. This makes it possible to prevent a sudden change in the air-conditioning control amount and realize comfortable air-conditioning control.

According to the fourth aspect of the present invention, the temperature setting means (38) for setting the temperature in the passenger compartment desired by the occupant.
A storage means (31b) for learning and storing the occupant set temperature set by the occupant in the temperature setting means (38) in association with an environmental condition affecting the air-conditioning state of the passenger compartment; and a storage means (31b). Computing means (31a) for computing an air-conditioning control amount based on a stored set temperature corresponding to an environmental condition among a large number of stored set temperatures stored in the storage means.
1a) In an air conditioner for a vehicle that automatically controls an air conditioning state in a vehicle cabin based on a calculation result, when an occupant set temperature is changed, an air conditioning control amount calculated based on the changed occupant set temperature and a storage setting. It is characterized in that it is determined whether or not the changed occupant set temperature is to be learned according to the difference between the air conditioning control amount calculated based on the temperature and the air conditioning control amount.

According to this, it is possible to prohibit the learning of the changed occupant set temperature when the air-conditioning control amount difference is less than a predetermined value, as in the invention according to claim 5, for example.
Thereby, when the air-conditioning control amount difference is small, the learning is not performed (not newly stored), so that the memory usage in the storage means is reduced.

According to a seventh aspect of the present invention, when the air-conditioning control amount difference is equal to or larger than a predetermined value, learning is performed by correcting the changed occupant set temperature so that the air-conditioning control amount difference becomes smaller than the predetermined value. And

Thus, it is possible to prevent a sudden change in the air conditioning control amount and realize comfortable air conditioning control.

According to the tenth aspect of the present invention, the temperature setting means (3) for setting the temperature in the passenger compartment desired by the occupant.
8) and storage means (31b) for learning and storing the occupant set temperature set by the occupant in the temperature setting means (38) in association with environmental conditions that affect the air conditioning state in the vehicle cabin;
Calculating means (31a) for calculating an air-conditioning control amount based on a storage set temperature corresponding to an environmental condition among a large number of stored set temperatures stored in the storage means (31b), and a calculation result of the calculation means (31a) In a vehicle air conditioner that automatically controls an air conditioning state in a vehicle cabin based on an air conditioner, when an occupant set temperature is changed, learning of the changed occupant set temperature is prohibited for a predetermined time after the start of air conditioning. Features.

Thus, it is possible to prohibit useless learning when the air-conditioning control amount does not change even if the occupant set temperature is changed, for example, during cool-down control immediately after the start of air conditioning in midsummer. Memory usage can be reduced.

The reference numerals in parentheses of the above-mentioned means indicate the correspondence with the concrete means described in the embodiments described later.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 shows the overall system configuration of a first embodiment of the present invention, in which the airflow of an air conditioning unit 10 constituting an indoor unit of a vehicle air conditioner is most upstream. The outside air inlet 11a and the inside air inlet 1 are on the side.
An inside / outside air switching box 11 having an inside / outside air switching box 11 having an inside / outside air switching box 11 is provided.

The inside / outside air switching door 12 is connected to the outside air inlet 11.
a, and is driven by an actuator 12a to switch the air introduced into the air conditioning unit 10 between inside air and outside air, or to adjust the mixing ratio of inside air and outside air.

A blower 13 as a blower is for sucking air into the inside / outside air switching box 11 and blowing it to the downstream side of the air conditioning unit 10, and includes a blower motor 14 and a centrifugal blower fan connected to its rotating shaft. 15.
An evaporator 16 and a heater core 17 are provided downstream of the blower fan 15.

The evaporator 16 is a heat exchanger for cooling, and is combined with a compressor or the like driven by a vehicle engine (not shown) to form a refrigeration cycle. The low-pressure refrigerant inside the evaporator absorbs heat from air and evaporates. Cool the air. The heater core 17 is a heat exchanger for heating, in which cooling water (warm water) of a vehicle engine (not shown) circulates, and heats the air using the engine cooling water as a heat source.

An air mix door 18 is provided rotatably on the upstream side of the heater core 17 as blown air temperature adjusting means. The opening of the air mix door 18 is adjusted by being driven by an actuator 18a. by this,
The air passing through the heater core 17 and the ratio of air bypassing the heater core 17 are adjusted, and the temperature of the air blown into the vehicle interior is adjusted.

A defroster door 2 for opening and closing a defroster (DEF) outlet 19 is located at the most downstream side of the air conditioning unit 10.
0, a face door 22 that opens and closes a FACE outlet 21 and a foot door 24 that opens and closes a foot outlet 23 are provided.

Each of these doors 20, 22, and 24 constitutes a blow mode switching means, and is driven by an actuator 25 to open and close each of the blow ports 19, 21, and 23 to open and close various blow modes (face mode, by-mode). Level mode, foot mode, foot differential mode, defroster mode, etc.) are set. Then, the air whose temperature has been adjusted is blown out into the vehicle interior from the blow-out opening opened according to each blow-out mode.

The air-conditioning control device 30 has a microcomputer 31 as a control means, and adjusts an applied voltage (blower voltage) of the blower motor 14 via a drive circuit 32 based on an output signal from the microcomputer 31 for a blowing amount. The motor speed is controlled by adjusting the motor speed. In addition, other actuators 12a, 18a, and 25 also
It is controlled by the drive circuit 32 based on the output signal from the microcomputer 31.

The microcomputer 31 includes a central processing unit 31a (hereinafter referred to as a CPU), a standby RA
M31b, and ROM, RAM, I /
It has an O port, an A / D converter, etc., and is itself well known.
U31a forms a calculating means for calculating the air-conditioning control amount. Also, the standby RAM 31 of the microcomputer 31
Reference numeral b denotes a storage means, which has a set temperature map as shown in FIG. 2, and the set temperature is stored in each cell corresponding to the inside temperature TR and the outside temperature TAM. Hereinafter, the set temperature stored in the set temperature map of the standby RAM 31b is referred to as a stored set temperature Tset (Tr, Tam).

The standby RAM 31b is a RAM for storing (backing up) a value learned from the occupant's preference even when an ignition switch (hereinafter referred to as IG) for turning on / off the vehicle engine is turned off. Even in this case, power is supplied directly from the vehicle-mounted battery without using the IG. Further, a backup power supply (not shown) for supplying power to the microcomputer 31 for a short time even when the electrical connection between the microcomputer 31 and the battery is interrupted is provided.

An operation signal is input to the microcomputer 31 from an air-conditioning operation unit 33 installed on the dashboard in the vehicle compartment. The air conditioning operation unit 33 includes an AUTO switch 34 for setting an automatic control state of the air conditioner, an inside / outside air switching switch 35 for manually switching and setting the inside / outside air mode, and a blowing mode for manually switching and setting the blowing mode. A changeover switch 36, a blower air amount switch 37 for manually setting the air blower of the fan 23, and a temperature setting switch (temperature setting means) 3 for setting a passenger's favorite vehicle interior temperature.
8 etc. are provided.

The microcomputer 31 has an internal air temperature sensor 39 for detecting an air temperature (indoor air temperature) TR in the vehicle interior, a signal for detecting an environmental condition affecting the air-conditioning state in the vehicle interior, and an air outside the vehicle interior. Temperature (outside air temperature) TA
Signals from an outside air temperature sensor 40 for detecting M and an insolation sensor 41 for detecting the amount of solar radiation TS entering the vehicle cabin are input via respective level conversion circuits 44. It is converted and read.

Also, signals from an evaporator temperature sensor 42 for detecting an evaporator temperature (specifically, an evaporator blow-out air temperature) TE, a water temperature sensor 43 for detecting an engine water temperature TW circulating through the heater core 17, and the like are also provided. The signals are input to the microcomputer 31 via the respective level conversion circuits 44,
The data is A / D converted and read by the microcomputer 31.

Further, the set temperature signal from the temperature setting switch 38 is level-converted by the level conversion circuit 44 and input to the microcomputer 31. The temperature setting switch 38 is, specifically, a set temperature up switch 38a.
The set temperature up switch 38a outputs a signal for increasing the set temperature by 0.5 ° C. each time the switch is pressed once, and the set temperature down switch 38b resets the set temperature to 0 each time the switch is pressed once. Output a signal to decrease the temperature by 5 ° C. Hereinafter, the temperature set by the occupant using the temperature setting switch 38 is referred to as an occupant set temperature Tset1.

FIG. 3 is a flowchart showing the entire control executed by the microcomputer 31 when the automatic control state of the air conditioner is set by the AUTO switch 34. The control shown in FIG. 3 is started when the IG is turned on. First, in step S20, initial values such as various conversions and flags are set. In the next step S30, sensor detection signals (environmental condition signals) from the inside temperature sensor 39, the outside temperature sensor 40, and the solar radiation sensor 41 are input, and
Operation signals of various switches 34 to 38 of the air conditioning operation unit 33 are input.

In the next step S100, an input process is performed. Specifically, the occupant set temperature Tset1 is learned, and a set temperature (hereinafter, this set temperature is referred to as a control set temperature TSET) used for calculating the air conditioning control amount is determined. In addition,
Details of step S100 will be described later.

In the next step S200, step S3
Based on the environmental condition signal input at 0 and the control set temperature TSET determined at step S100, the target blowing temperature TAO of the air blown into the vehicle compartment is calculated according to the following equation 1. Here, TAO is the environmental condition (heat load condition)
Is required to maintain the vehicle interior at the control set temperature TSET regardless of the change in the air temperature. In the following equation 1, KSET, KR, KAM, and KS are coefficients,
C is a constant.

[0033]

## EQU1 ## TAO = KSET × TSET-KR × TR-K
AM × TAM−KS × TS + C Next, the process proceeds to step S300, where the opening degree of the air mix damper 22b is calculated with respect to the target blowing temperature TAO, and the actuator 18a is controlled via the drive circuit 32 so that the opening degree is obtained. The temperature of the air blown from the air outlet to the vehicle interior is controlled.

Next, in step S400, a blower voltage BLW for determining the amount of air to be blown is calculated based on the target blowing temperature TAO and the blower voltage calculation function f1 from the air volume characteristics shown in FIG. The voltage (blower voltage) applied to 14 is controlled. Thus, the number of rotations of the blower fan 15 is controlled to control the amount of blown air blown into the vehicle interior.

Here, step S200, step S3
00 and step S400 constitute an air-conditioning control amount calculating means for calculating an air-conditioning control amount (blowing air temperature and air blowing amount).

Next, the process proceeds to step S500, where the inside / outside air introduction ratio by the inside / outside air switching door 12 is calculated, and the driving circuit 3
The inside / outside air switching door 12 is driven to a predetermined position by controlling the actuator 12a through the control unit 2. Next, the process proceeds to step S600, in which the blowing mode doors 20, 22, 2
By calculating the blowout mode by the controller 4 and controlling the actuator 25 via the drive circuit 32, the blowout mode doors 20, 22, and 24 are driven to predetermined positions. Next, the process proceeds to step S700 to control a compressor (not shown). After the process in step S700, the process returns to step S30, and the above process is repeated.

FIG. 5 shows the input signal processing step S10 of FIG.
7 is a flowchart showing details of the occupant set temperature Tset set by the occupant operating the temperature setting switch 38.
The first learning method will be described.

In step S101, the standby RAM
The storage set temperature Tset (Tr,
Tam) and the environmental conditions, the first target outlet temperature TAO0 is calculated according to the following equation 2, and the second target outlet temperature TAO1 is calculated according to the following equation 3 from the occupant set temperature Tset1 changed by the occupant and the environmental conditions.

[0039]

## EQU2 ## TAO0 = KSET × Tset (Tr, Ta
m) -KR x TR-KAM x TAM-KS x TS + C

[0040]

## EQU3 ## TAO1 = KSET × Tset1-KR × TR
−KAM × TAM−KS × TS + C Next, in step S102, the first
The first blower voltage BLW0 is calculated based on the target blowout temperature TAO0 and the blower voltage calculation function f1 according to the following Expression 4, and the second blower voltage is calculated based on the second target blowout temperature TA01 and the blower voltage calculation function f1. B
LW1 is calculated according to Equation 5 below. Note that the blower voltage calculated in step S102 is calculated in the next step S10.
It is used for the determination of No. 3 and is not used for actual blower voltage control.

[0041]

## EQU4 ## BLW0 = f1 (TAO0)

[0042]

## EQU5 ## BLW1 = f1 (TAO1) Next, in step S103, the voltage difference between the two blower voltages (|
BLW0-BLW1 |, see FIG. 6). Then, | BLW0−BLW1 | <α (for example, α
= 1V), the process proceeds to step S104, and | BLW
If 0−BLW1 | ≧ α, the process proceeds to step S105.

When the operation proceeds to step S104, the blower voltage (transmission) is calculated when the blower voltage is calculated based on the storage set temperature Tset (Tr, Tam) and when the blower voltage is calculated based on the occupant set temperature Tset1. Air flow) has hardly changed, so that the same control was performed regardless of the set temperature. Therefore, in step S104, the standby RAM
The storage set temperature Tset (Tr, Ta
m) is left as it is. That is, the occupant set temperature Tset
Do not learn if 1 is changed. As described above, when the air-conditioning control amount (in this example, the air blowing amount) hardly changes even if the occupant set temperature Tset1 is changed, learning is not performed, so that memory can be saved.

On the other hand, in step S103, | BLW0-B
If it is determined that LW1 | ≧ α and the process proceeds to step S105, the blower voltage is stored in the storage set temperature Tset (Tr,
Tam) and when the blower voltage is calculated based on the occupant set temperature Tset1, the blower voltage (blowing volume) will differ to some extent. In such a case, the occupant changes. Occupant set temperature Tset1
To learn. That is, in step S105, the occupant set temperature Tset1 changed by the occupant is changed to the internal temperature T at that time.
R and the storage setting temperature T of the mass corresponding to the outside temperature TAM
set (Tr, Tam) as standby RAM 31b
To memorize.

Here, steps S101 to S1
The reference numeral 05 constitutes a learning possibility determining means for determining whether to learn the occupant set temperature Tset1 changed by the occupant.

Next, the routine proceeds to step S106, where the control set temperature TSET used for calculating the air-conditioning control amount is determined. Then, the control set temperature TS determined in step S106
Using ET, the target outlet temperature TAO is set in step S20.
The calculation is performed at 0 (FIG. 3), and the calculation and control of the blown air temperature, the blown air amount, and the like are performed after step S300 in FIG.

Here, as the control set temperature TSET,
Basically, the storage set temperature Tset (Tr, Tam) stored in the standby RAM 31b is used. For example, when the internal temperature TR and the external temperature TAM change and move to a different cell in FIG. If there is a large difference between the storage setting temperature of the mass corresponding to (the current storage setting temperature) and the storage setting temperature of the mass corresponding to the current inside and outside temperature (the immediately preceding storage setting temperature), the blow-out air temperature and the air flow rate Etc. change suddenly and the occupant will feel uncomfortable.

Therefore, in step S106, when the current storage set temperature is significantly different from the immediately preceding storage set temperature, a value that gradually changes from the immediately preceding storage set temperature to the current storage set temperature (correction set temperature). By using this correction set temperature as the control set temperature TSET, it is possible to prevent sudden changes in the blown air temperature, the blown air amount, and the like. Here, step S106 forms a set temperature correction unit that calculates the correction set temperature.

FIG. 7 shows the TSET determination step S16 in FIG.
8 is a flowchart showing details of the control set temperature TSET, and a method of determining the control set temperature TSET will be described below with reference to FIG. Here, the control set temperature TSET used in the previous calculation of the air-conditioning control amount (the control set temperature used in the previous calculation of the air-conditioning control amount in the loop of FIG. 3) is set to the previous control set temperature Tset.
b, and the timer is T (however, the initial value of the timer is 0).

First, in step S106A, the absolute value of the control set temperature difference ΔTset expressed by the following equation (6) becomes β
(For example, 2 ° C.).

[0051]

ΔTset = Tsetb−Tset (Tr, Tam) When | ΔTset | ≦ β, the difference between the previous control set temperature Tsetb and the storage set temperature Tset (Tr, Tam) stored in the standby RAM 31b is obtained. Since the value is small, it is determined that even if the value stored in the standby RAM 31b is used for the calculation of the air conditioning control amount, the blown air temperature, the blown air amount, and the like do not change suddenly. Then, the storage set temperature Tset (Tr, Tam) is determined as the control set temperature TSET, and the process proceeds to step S200.

When | ΔTset |> β, step S
No is determined in 106A, and the timer T is checked in step S106D. When T = 0, the process proceeds to step S106E to start a timer, and then proceeds to step S106F. Then, in step S106F, the previous control set temperature Tse
By setting tb as the control set temperature TSET, sudden changes in the blown air temperature, the blown air amount, and the like are prevented.

If T ≠ 0 in step S106D,
It is determined in step S106G whether 0 <T <30 seconds. In the case of Yes, since it has not passed much time after passing through step S106E, the process proceeds to step S106F in order to set the control set temperature TSET to the same value as the value used for the previous control.

If No in step S106G, it means that some time has passed since the value of the control set temperature TSET was changed, so step S106H
Resets the timer in step S106I, determines the sign (positive or negative) of the control set temperature difference ΔTset in step S106I, and according to the determination result, determines in step 106J and step S106
Go to any of K.

In step 106J, a value 0.5 ° C. higher than the previous control set temperature Tsetb is set as the control set temperature TSET. In step S106K, a value 0.5 ° C. lower than the previous control set temperature Tsetb is controlled. Set as the set temperature TSET. As described above, by performing the gradual change control that gradually changes the value of the control set temperature TSET according to time, it is possible to prevent a sudden change in the blown air temperature, the blown air amount, and the like.

Here, as an example, the previous control set temperature T
When setb is 25 ° C. and the storage set temperature Tset (Tr, Ta
m) is 18 ° C. First, Step S1
06A → Step S106D → Step S106E → Step S106F, and in Step S106F, the control set temperature Tset is set to 25 ° C. Until the timer reaches 30 seconds, Step S106A → Step S106D
The process proceeds from step S106G to step S106F, during which the control set temperature TSET remains at 25 ° C.

Next, when the timer reaches 30 seconds, step S1 is executed.
06I, the control set temperature difference ΔTset = 7
° C, the process proceeds to step S106K, and the control set temperature TS
Change ET to 24.5 ° C. At this time, step S10
Since the timer is reset at 6H, the control set temperature TSET remains at 24.5 ° C. for the next 30 seconds.

As described above, the control set temperature T is set every 30 seconds.
SET is lowered by 0.5 ° C., and the control set temperature difference ΔT
Since control is repeated until set reaches 2 ° C., the control set temperature T
The SET does not suddenly change in a short time, and it is possible to prevent a sudden change in the blown air temperature, the blown air amount, and the like.

In the present embodiment, the occupant set temperature Ts
When et1 is changed, the changed occupant set temperature Ts
The air-conditioning control amount calculated based on et1 (the blowing amount in this example) and the storage set temperature Tset stored before the change.
(Tr, Tam) and the air-conditioning control amount calculated based on (Tr, Tam).
It is determined whether or not to learn the occupant set temperature Tset1 according to the air-conditioning control amount difference (steps S101 to S105 constituting a learning feasibility determining means).
When the difference in the air conditioning control amount is small, the changed occupant set temperature Tset1 is not learned (not newly stored), so that the memory usage in the microcomputer 31 is reduced.

When the storage set temperature Tset (Tr, Tam) used for calculating the air-conditioning control amount is changed in response to a change in environmental conditions, and the difference between the storage set temperatures before and after the change is equal to or more than a predetermined value, The air conditioning control amount is calculated based on the correction set temperature set to a value different from the storage set temperature, and the correction set temperature is changed from a value close to the storage set temperature before the change to a value close to the storage set temperature after the change. To change gradually. Therefore, it is possible to prevent a sudden change in the air conditioning control amount and realize comfortable air conditioning control.

(Second Embodiment) Next, a second embodiment shown in FIG. 8 will be described. This embodiment is a partial modification of the input signal processing step S100 in the first embodiment, and the other points are the same as the first embodiment.

In FIG. 8, in step S111, as in step S101 (FIG. 5) of the first embodiment, the first
The target outlet temperature TAO0 and the second target outlet temperature TAO1 are calculated. Next, in step S112, the first blower voltage BLW0 and the second blower voltage BLW1 are calculated as in step S102 (FIG. 5) of the first embodiment.

Next, in step S113, as in step S103 (FIG. 5) of the first embodiment, the magnitude of the voltage difference (| BLW0-BLW1 |) between the two blower voltages is determined. When | BLW0−BLW1 | <α, the process proceeds to step S114, and when | BLW0−BLW1 | ≧ α, the process proceeds to step S120.

When proceeding to step S114, the blower voltage is calculated based on the storage temperature Tset (Tr, Tam) and when the blower voltage is calculated based on the occupant set temperature Tset1. Air flow) has hardly changed, so that the same control was performed regardless of the set temperature. Therefore, in step S114, the standby RAM
The storage set temperature Tset (Tr, Ta
m) is left as it is. That is, the occupant set temperature Tset
Do not learn if 1 is changed. As described above, when the air-conditioning control amount (in this example, the air blowing amount) hardly changes even if the occupant set temperature Tset1 is changed, learning is not performed, so that memory can be saved.

When the process proceeds from step S113 to step S120, in step S120, the storage set temperature Ts
The difference between et (Tr, Tam) and the occupant set temperature Tset1 is determined.

Then, Tset (Tr, Tam) -Ts
When et1> 0, the process proceeds to step S121, in which the storage set temperature Tset (Tr, Tam) is corrected to a value lower by 0.5 ° C. than the current storage set temperature Tset (Tr, Tam), and then the process returns to step S111. . On the other hand, Tset
When (Tr, Tam) −Tset1 ≦ 0, the process proceeds to step S122, and the storage set temperature Tset (Tr, Ta
m) is corrected to a value 0.5 ° C. higher than the current storage set temperature Tset (Tr, Tam), and the process returns to step S111.

Then, the determination in step S113 is Yes.
Until step S121 or step S122
Then, the correction of the storage set temperature Tset (Tr, Tam) is repeated. If the determination in step S113 becomes Yes, the storage set temperature Tset (Tr, Tam) after correction is stored in the standby RAM 31b in step S114. .

Next, in step S116, the storage set temperature Tset (Tset) stored in the standby RAM 31b is set.
After setting (r, Tam) as the control set temperature TSET, the process proceeds to step S200.

In the present embodiment, the occupant set temperature Ts
When et1 is changed, the changed occupant set temperature Tset
Air-conditioning control amount calculated based on 1 (air blowing amount in this example)
And the storage set temperature Tset (T
r, Tam), if the air-conditioning control amount difference from the air-conditioning control amount calculated based on (R, Tam) is equal to or greater than a predetermined value (No in step S113), the air-conditioning control amount difference is corrected (corrected) so as to be less than the predetermined value. The value is learned (stored in the standby RAM 31b).

Therefore, the storage set temperature T of the adjacent cells (see FIG. 2) stored in the standby RAM 31b is set.
The difference between set (Tr, Tam) does not become so large, and therefore, even when the internal temperature TR or the external temperature TAM changes and moves to a different cell in FIG. .

In the first embodiment, the internal temperature TR and the external temperature TAM change and move to a different cell in FIG. 2 to store the set temperature Tset (Tr, T
When the value of am) changes greatly, the value of the control set temperature TSET is gradually changed each time to prevent a sudden change in the blown air temperature, the amount of air blown, and the like. Mass storage set temperature Tset (Tr,
Tam), the control set temperature TSET does not need to be gradually changed as in the first embodiment.

(Third Embodiment) Next, a third embodiment shown in FIGS. 9 and 10 will be described. In the first embodiment, the difference in the blower voltage (blowing amount) is used as the difference in the air-conditioning control amount. However, in the present embodiment, the opening of the air mix damper 22b for controlling the blown air temperature (hereinafter, the A / M opening) Difference). Accordingly, steps S102 and S103 (see FIG. 5) of the first embodiment are replaced with steps S132 and S133 (see FIG. 9). The other points are the same as in the first embodiment.

In FIG. 9, in step S101, a first target outlet temperature TAO0 and a second target outlet temperature TAO1 are calculated. Next, in step S132, A shown in FIG.
From the / M opening degree characteristic, the first target outlet temperature TAO0 and A /
Based on the M opening calculation function f2, the first A / M opening SW0
Is calculated, and the second target outlet temperatures TAO0 and A
/ M opening degree SW based on / M opening calculation function f2
1 is calculated.

Next, in step S133, the magnitude of the difference (| SW0-SW1 |) between the two A / M openings is determined.
| SW0−SW1 | <γ (eg, γ = 10
%), That is, if the change in the air-conditioning control amount (in this example, the A / M opening degree and the outlet air temperature) is small, step S
Proceed to 104. On the other hand, in step S133, | SW0-S
If it is determined that W1 | ≧ γ, that is, if the change in the air-conditioning control amount is large, the process proceeds to step S105.

Steps S104 and S105
Subsequent steps are the same as in the first embodiment, and a description thereof will be omitted. Here, step S101, step S1
32, step S133, step S104, and step S105 correspond to the occupant set temperature Tset changed by the occupant.
1 constitutes a learning feasibility determining means for determining whether or not to learn 1.

According to the present embodiment, similarly to the first embodiment, the amount of memory used in the microcomputer 31 can be reduced, and a sudden change in the air conditioning control amount can be prevented to realize comfortable air conditioning control. .

(Fourth Embodiment) Next, the fourth embodiment shown in FIG.
An embodiment will be described. In the second embodiment, the difference in the blower voltage (blowing amount) is used as the difference in the air conditioning control amount. However, in the present embodiment, the opening of the air mix damper 22b that controls the temperature of the blown air (hereinafter, the A / M opening) Difference). Accordingly, step S11 of the second embodiment
2 and step S113 (see FIG. 8)
142 and step S143 (see FIG. 11). The other points are the same as in the second embodiment.

Referring to FIG. 11, first step S111
The target outlet temperature TAO0 and the second target outlet temperature TAO1 are calculated. Next, in step S142, the first target outlet temperatures TAO0 and TAO are determined from the A / M opening degree characteristics shown in FIG.
1 / A / M opening degree SW based on / M opening degree calculation function f2
0, and the second A / M opening S based on the second target outlet temperature TAO0 and the A / M opening calculation function f2.
Calculate W1.

Next, in step S143, the magnitude of the difference (| SW0-SW1 |) between the two A / M openings is determined.
| SW0−SW1 | <γ (eg, γ = 10
%), That is, if the change in the air-conditioning control amount (in this example, the A / M opening degree and the outlet air temperature) is small, step S
Proceed to 114. On the other hand, in step S143, | SW0-S
If it is determined that W1 | ≧ γ, that is, if the change in the air-conditioning control amount is large, the process proceeds to step S120.

Steps S114 and S120
Subsequent steps are the same as in the second embodiment, and a description thereof will be omitted.

According to the present embodiment, as in the second embodiment, the amount of memory used in the microcomputer 31 can be reduced, and a sudden change in the air conditioning control amount can be prevented to realize comfortable air conditioning control. .

(Other Embodiment) For a predetermined time (for example, 5 minutes) after the air-conditioning operation is first started after the IG is turned on,
The learning of the occupant set temperature Tset1 may be prohibited. According to this, useless learning when the air-conditioning control amount does not change even when the occupant set temperature Tset1 is changed, such as during cool-down control immediately after the start of air-conditioning in midsummer, is prohibited, and memory can be saved. In this case, the learning prohibition time may be changed according to the environmental conditions.

When the difference between the storage set temperature Tset (Tr, Tam) and the internal temperature TR is a predetermined value (for example, 5 ° C.) or more, learning of the occupant set temperature Tset1 may be prohibited.

When the difference between the occupant set temperature Tset1 and the internal temperature TR is equal to or more than a predetermined value (for example, 5 ° C.), learning of the occupant set temperature Tset1 may be prohibited.

In each of the above embodiments, the storage set temperature Tset (Tr, Ta
Although m) is stored, it may be stored in association with any of the inside air temperature, the outside air temperature, the amount of solar radiation, the occupant temperature, the skin temperature, the air-conditioning operation time, and the like.

The set temperature map of FIG. 2 may be stored for each driver instead of one.

In the first embodiment, the learned contents are
Although the standby RAM 31b is used to store data even when the G is off, a non-volatile memory may be used without using the standby RAM 31b. In this case as well, when the IG is turned off and the power supply from the battery is stopped, the learned contents are saved.

In the second embodiment, step S12
1. In step S122, the storage set temperature Tset (T
r, Tam) was changed by 0.5 ° C., but may be changed by 0.2 ° C. or 0.1 ° C.

[Brief description of the drawings]

FIG. 1 is an overall system diagram of a first embodiment of the present invention.

FIG. 2 is a diagram of a set temperature map for explaining the operation of the first embodiment.

FIG. 3 is a flowchart illustrating the entirety of the automatic air conditioning control according to the first embodiment.

FIG. 4 is an air volume control characteristic diagram used for describing the operation of the first embodiment.

FIG. 5 is a flowchart illustrating control of a main part of the first embodiment.

FIG. 6 is an air volume control characteristic diagram used for describing the operation of the first embodiment.

FIG. 7 is a flowchart illustrating control of a main part of the first embodiment.

FIG. 8 is a flowchart showing control of a main part of the second embodiment.

FIG. 9 is a flowchart illustrating control of a main part of the third embodiment.

FIG. 10 is an A / M opening degree characteristic diagram used for describing the operation of the third embodiment.

FIG. 11 is a flowchart illustrating control of a main part of the fourth embodiment.

[Explanation of symbols]

31a: CPU as arithmetic means; 31b, standby RAM as storage means; 38, temperature setting switch as temperature setting means.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takamasa Kawai 1-1-1 Showa-cho, Kariya-shi, Aichi F-Term in Denso Co., Ltd. 3L011 AU02

Claims (11)

[Claims] A temperature setting means (38) for setting a temperature in a passenger compartment desired by an occupant; and a temperature setting means (3).
A storage means (31b) for learning and storing the occupant set temperature set by the occupant in 8) in association with an environmental condition affecting the air-conditioning state in the vehicle cabin; and the storage means (31).
b) calculating means for calculating an air-conditioning control amount based on the stored temperature corresponding to the environmental condition among a large number of stored temperatures stored in b), wherein the calculation result of the calculating means (31a) is provided. In the vehicle air conditioner that automatically controls the air conditioning state in the vehicle interior based on the, the storage set temperature used for the calculation of the air conditioning control amount is changed according to the change of the environmental condition, and before and after the change When the difference between the stored set temperatures is equal to or more than a predetermined value, a correction set temperature different from the stored set temperature is set, and the air conditioning control amount is calculated based on the corrected set temperature. apparatus. 2. The vehicle according to claim 1, wherein the correction set temperature is gradually changed from a value close to the storage set temperature before the change to a value close to the storage set temperature after the change. Air conditioner. 3. The air conditioning control amount is calculated based on the storage set temperature when a difference between the storage set temperatures before and after the change is less than a predetermined value.
A vehicle air conditioner according to claim 1. 4. A temperature setting means (38) for setting a temperature in a passenger compartment desired by an occupant, and said temperature setting means (3).
A storage means (31b) for learning and storing the occupant set temperature set by the occupant in 8) in association with an environmental condition affecting the air-conditioning state in the vehicle cabin; and the storage means (31).
b) calculating means for calculating an air-conditioning control amount based on the stored temperature corresponding to the environmental condition among a large number of stored temperatures stored in b), wherein the calculation result of the calculating means (31a) is provided. A vehicle air conditioner that automatically controls an air conditioning state of the vehicle interior based on the air conditioning control amount calculated based on the changed occupant set temperature and the stored set temperature when the occupant set temperature is changed. A vehicle air conditioner that determines whether or not to learn the changed occupant set temperature in accordance with a difference between the air conditioning control amount and an air conditioning control amount calculated based on the air conditioning control amount. 5. The vehicle air conditioner according to claim 4, wherein learning of the changed occupant set temperature is prohibited when the air conditioning control amount difference is less than a predetermined value. 6. The vehicle air conditioner according to claim 4, wherein when the air conditioning control amount difference is equal to or larger than a predetermined value, the changed occupant set temperature is learned. 7. The occupant set temperature after the change is corrected and learned so that the air conditioning control amount difference is less than a predetermined value when the air conditioning control amount difference is equal to or more than a predetermined value. 7. The vehicle air conditioner according to 6. 8. A temperature setting means (38) for setting a temperature in a passenger compartment desired by an occupant; and said temperature setting means (3).
A storage means (31b) for learning and storing the occupant set temperature set by the occupant in 8) in association with an environmental condition affecting the air-conditioning state in the vehicle cabin; and the storage means (31).
b) calculating means for calculating an air-conditioning control amount based on the stored temperature corresponding to the environmental condition among a large number of stored temperatures stored in b), wherein the calculation result of the calculating means (31a) is provided. In the vehicle air conditioner that automatically controls the air conditioning state in the vehicle interior based on the, when the occupant set temperature is changed, one of the occupant set temperature and the stored set temperature and the environmental condition A vehicle air conditioner, which determines whether or not to learn the changed occupant set temperature in accordance with the change. 9. The method according to claim 6, wherein the environmental condition is a temperature in the cabin, and when a difference between one of the occupant set temperature and the stored set temperature and the temperature in the cabin is equal to or more than a predetermined value, the after-change is performed. The vehicle air conditioner according to claim 8, wherein learning of the occupant set temperature is prohibited. 10. A temperature setting means (38) for setting a temperature in the vehicle interior desired by an occupant, and an occupant set temperature set by the occupant by the temperature setting means (38) is used to determine an air conditioning state in the vehicle interior. Storage means (31b) for learning and storing in association with environmental conditions affecting the storage means;
1b) calculating means for calculating an air-conditioning control amount based on the stored set temperature corresponding to the environmental condition among a large number of stored set temperatures stored in 1b), and a calculation result of the calculated means (31a) In the vehicle air conditioner that automatically controls the air conditioning state in the vehicle cabin based on, when the occupant set temperature is changed, learning of the changed occupant set temperature is prohibited for a predetermined time after the start of air conditioning. An air conditioner for a vehicle. 11. The air conditioner according to claim 1, wherein the air conditioning control amount is at least one of an amount of air blown into the vehicle interior and a temperature of air blown into the vehicle interior. Vehicle air conditioner.