JP3019596B2 - Vehicle air flow control device - 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 flow control device for a vehicle, and more particularly to a device for learning control of a manual control mode with respect to an automatic control mode.

[0002]

2. Description of the Related Art Conventionally, in Japanese Unexamined Patent Publication No. Hei 3-54015, when an occupant manually changes the air volume of a blower to a maximum air volume while air is blown into a vehicle interior with a preset air volume characteristic, Alternatively, an apparatus is disclosed in which, when the air volume is changed from the maximum air volume to a lower air volume, the changed air volume is learned and controlled, and the switching point of the maximum air volume in a preset air volume characteristic is changed.

[0003]

However, the above conventional example is,
In the characteristic diagram showing the air volume with respect to the vehicle interior target blowing temperature, the point at which the air volume is switched to the maximum air volume or the point at which the maximum air volume is canceled in the characteristic diagram is merely changed based on the manually set data of the air volume manual setting means. It is not something that can change the other points.

[0004] Therefore, the present invention provides a method for controlling the target air temperature in the vehicle compartment, which is indicated on the horizontal axis, when the occupant manually changes the air volume while air is being blown based on the previously set air blowing characteristics. It is an object of the present invention to provide a vehicle air volume control device capable of changing the air volume shown on the vertical axis of the air blowing characteristics over an arbitrary range.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a blower for blowing air into a passenger compartment, an environmental condition detecting means for detecting an environmental condition affecting an air conditioning state in the passenger compartment, and A target blowing temperature information calculating means for calculating target blowing temperature information of the air blown into the vehicle interior based on a detection signal of the condition detecting means; a target blowing temperature information calculated by the target blowing temperature information calculating means; and a blower voltage of the blower And a blower characteristic storing means for storing blower characteristics, which are relative relationships with each other, at a plurality of points of the target blowout temperature information, and a blower of the blower based on the blower characteristics stored in the blower characteristic storage means. Air flow rate determining means for determining the air volume, air volume manual setting means for manually setting the air volume of the blower, and output signals of the air volume determining means and the air volume manual setting means. A driving means for controlling the driving of the blower, wherein when the blowing amount is changed by the blowing amount manual setting means within a region between the predetermined points in the blowing characteristics. The gist of the present invention is a vehicle air flow control device including a blower characteristic changing unit that changes the blower voltage at the points located at both ends of the region.

[0006]

According to the present invention, when the air flow rate is manually changed by the occupant in the area between predetermined points of the target air temperature information in the air blowing characteristic stored in the air blowing characteristic storage means, the area is changed. By changing the blower voltage at the points located at both ends of the blower, the air blowing characteristics can be easily changed. Further, by setting the predetermined point over an arbitrary range of the target outlet temperature information, it is possible to change the air blowing characteristic to a characteristic suitable for the occupant over an arbitrary range of the target outlet temperature information.

According to the second aspect of the present invention, since learning is performed after a predetermined time has elapsed after manual setting, learning when the occupant is manually set, learning of a malfunction of the occupant, and the like are prevented. Can be.

[0008]

FIG. 2 shows a specific configuration of an embodiment of the vehicle air flow control device according to the present invention. At the most upstream side of the air conditioning unit 20, an inside / outside air switching damper 22a is installed. The inside / outside air switching damper 22a is arranged at a portion where the outside air introduction port and the inside air introduction port are separated, and selects a ratio of inside air to outside air to be introduced into the air conditioning unit 20 by an actuator (not shown).

A blower motor 24 and a fan 23 fixed to the blower draw air into the air conditioning unit 20 and blow the air downstream of the unit 20. An evaporator 25 and a heater core 26 are provided downstream of the fan 23. ing.

The evaporator 25 is combined with a compressor or the like (not shown) to form a cooling cycle, and cools the passing air. In the heater core 26, engine cooling water (not shown) circulates and heats air passing therethrough.

An air mix damper 22b is provided upstream of the heater core 26.
The opening of 2b is adjusted by an actuator (not shown), whereby the ratio of the air passing through the heater core 26 and the ratio of the air bypassing the heater core 26 is adjusted, and the temperature of the air blown into the most downstream passenger compartment is controlled.

A defroster (DEF) blow damper 22c, a face (FACE) blow damper 22d, and a foot (FOOT) blow damper 22e are provided at the most downstream of the air conditioning unit 20. The air whose temperature is controlled is blown out in each blowing mode by operating each of these dampers by an actuator (not shown).

The amount of air blown is controlled by a drive circuit 30 that drives the blower motor 24 based on an output signal from a microcomputer 31. The microcomputer 31 includes a central processing unit (CPU), ROM, RA (not shown).
It has an M, a standby RAM, an I / O port, an A / D conversion function, etc., and is itself well known.

The standby RAM is an RA for storing (backing up) a value obtained by learning a passenger's preference even when an ignition switch (hereinafter referred to as IG.) Is off.
M and IG. Is off even if battery is off
G. FIG. The power is supplied directly without going through. Also, the microcomputer 31 is configured with a backup power supply (not shown) that supplies power to the microcomputer 31 for a short time even when the power is removed from the battery.

The microcomputer 31 has an operation unit 37.
Is input. The operation unit 37 includes an AUTO switch for setting an automatic control state (not shown), a manual inside / outside air changeover switch, and a manual air outlet mode changeover switch (D
EF, FACE, FOOT, bi-level (B / L), foot differential (F / D)), a manual air volume switch, and the like.

The microcomputer 31 has an internal temperature sensor 33, an environmental condition affecting air conditioning in the vehicle.
The signals are input from the outside air temperature sensor 34 and the solar radiation sensor 35 via the respective level conversion circuits 32. These are A / D-converted by the microcomputer 31 and environmental conditions are read. The occupant's favorite temperature is input from the temperature setting switch 36, level-converted by the level conversion circuit 32, and input to the microcomputer 31.

Next, details of the operation unit 37 will be described with reference to FIG. As shown in FIG. 6, the operation unit 37 includes four switches: a low switch 371, a down switch 372, an up switch 373, and a high switch 374. When the low switch 371 is pressed, the blower voltage is reduced to 4 volts (minimum voltage).
Is output. The high switch 374 is configured to output a signal for controlling the blower voltage to 12 volts (highest voltage) when pressed.

The down switch 372 outputs a signal that lowers the blower voltage by one level (= 0.25 volts) when pressed for less than 0.5 second, and
The blower voltage is reduced to 0.1
It is configured to output a signal lowering by one level every second.

The up switch 373 outputs a signal that raises the blower voltage by one level (= 0.25 volt) when pressed for less than 0.5 second, and
The blower voltage is reduced to 0.1
It is configured to output a signal that raises the level by one every second.

Next, basic control by the microcomputer 31 will be described with reference to FIG. The microcomputer 31 has an IG. Control is started in step 100 when the power is turned on, and the flow advances to step 110 to set initial values such as various conversions and flags.

In the next step 150, the internal temperature sensor 3
3, environmental conditions are input by sensor signals from the outside air temperature sensor 34 and the solar radiation sensor 35, and the temperature setting switch 3
6 and the operation unit 37, the state of the operation switch is input. In step 150, a process for an input from the operation unit 37 is also performed (described later with reference to FIG. 7).

In the next step 200, the target blowing temperature (TAO) of the air blown into the vehicle compartment is calculated according to the following equation 1 based on the environmental conditions input in step 150.

[0023]

TAO = K _SET × T _SET −K _R × T _R −K _AM × T _AM −K _S × T _S + C, where K _SET , K _R , K _AM , and K _S are coefficients and C is a constant. , T _sET is set temperature, T _R is the inside air temperature, the T _AM outside air temperature, T _S is the amount of solar radiation.

Next, the routine proceeds to step 300, where the opening of the air mix damper 22b is calculated with respect to TAO, and an actuator (not shown) is driven by the drive circuit 30 so that the opening becomes the opening.
And controls the temperature of the air blown out from the outlet into the vehicle interior.

Next, the routine proceeds to step 400, where the amount of air blown is calculated, and the fan 23 connected to the blower motor 24 via the drive circuit 30 is rotated to control the amount of air blown into the vehicle interior. However, there is an individual difference in the air volume desired by the crew, and it is difficult to determine uniformly. Therefore, in one embodiment, the air volume of the occupant's preference is learned at the time of the manual operation of the occupant, so that the air blast characteristic reflects the occupant's preference. This will be described later in detail.

Next, the routine proceeds to step 500, where the inside / outside air introduction ratio by the inside / outside air switching damper 22a is calculated, and an actuator (not shown) is controlled via the drive circuit 30. Next, the routine proceeds to step 600, where the mode state is calculated, and
An actuator (not shown) for driving the F blowout damper 22c, the FACE blowout damper 22d, and the FOOT blowout damper 22e is controlled via a drive circuit 30.

Next, the routine proceeds to step 700, where a compressor (not shown) is controlled. After the processing of step 700,
Returning to step 150, various signals are read again, thereby calculating TAO in step 200.
Steps 300, 400, 500, 600, 7 according to O and the state of the switch read in step 150
The control of air conditioning is repeated by 00.

Next, the operation unit 3 in step 150
7 will be described with reference to FIG.
First, control when the up switch 373 of the operation unit 37 is pressed will be described.

In step 800, the up switch 373
It is determined whether or not is pressed. Up switch 37
If "3" is pressed, YES is determined, and step 801 is determined.
Proceed to. Immediately before the up switch 373 is pressed, the flag (UPF) indicating that the up switch 373 has been pressed is set to the initial value or 0 in the processing of step 806.
Therefore, NO is determined in step 801.

In the next step 802, the flag UPF is set to 1 and the counter CNT2 indicating the time elapsed since the up switch 373 was pressed is cleared.
The storing blower voltage V _F when the up switch 373 is pressed as V _F1. Note that the counter CNT2 is a counter that is always incremented every 0.1 seconds by a timer interrupt (not shown).

In the next step 803, CNT2 is compared with a preset value N1 (= 4). Immediately after the up switch 373 is pressed, CNT2 <N1, so that it is determined NO in step 803. In step 804, the voltage obtained by adding 0.25 volts blower voltage V _F1 when the up switch 373 is pressed and V _M. Here determined the V _M is replaced with V _F at step 410 of FIG. 4 to be described later, the V _F is output at the next step 411.

Since the counter CNT2 is incremented every 0.1 second, the up switch 373 is set to 0.4
If pressed for more than a second, CNT2 = 4 and step 8
03 is determined as YES. YES in step 803
Is determined, in the next step 805, the blower voltage V _F1 when the up switch 373 is pressed is set to 0.25.
× a value a value obtained by adding the (CNT2-N1 + 1) determined as V _M. However, the value of V _M is up to 12 volts.

[0033] That is in other words, if you press the time-up switch 373 of less than 0.5 seconds, V _M is asked to up only 0.25 volts (1 level) to the V _F1, 0.5 When the up switch 373 is pressed for more than one second, V _M becomes 0.2 V every 0.1 second with respect to V _F1 .
You are asked to increase by 5 volts (one level).

Next, when the up switch 373 is turned off,
In step 800, the determination is NO. Then, in the next step 806, the flag UPF is reset and step 8
Proceed to 10. Therefore, when the up switch 373 is turned on again next, the process proceeds to step 800, step 801, step 802, step 803, step 804, and step 810, and the probe voltage rises by 0.25 volt (one level). And up switch 3
By continuing to press 73 (less than 0.4 seconds), the process proceeds to step 800, step 801, step 803, step 804, and step 810. If the up switch 373 is further pressed (0.4 seconds or more), the process proceeds to step 800, step 801, step 803, step 805, and step 810. After 0.5 second has elapsed, 0 is set every 0.1 second. The blower voltage increases by .25 volts (one level).

The control in steps 810 to 816 is control when the down switch 372 of the operation unit 37 is pressed. When the down switch 372 is pressed, the same control as when the up switch 373 is pressed is performed, so that the description of the control when the down switch 372 is pressed will be omitted. Note that DOWNNF in FIG. 7 is a flag indicating that the down switch 372 has been pressed.

Next, the high switch 37 of the operation unit 37
Control when 4 is pressed will be described. Step 8
At 20, it is determined whether the high switch 374 has been pressed. If the high switch 374 has been pressed, YES is determined, and the routine proceeds to step 821.

[0037] 1 of the maximum level V _M in step 821
Set to 2 volts. In addition the step 821, stores the voltage 1 volt (4 levels) up against the blower voltage V _F1 immediately before the high switch 374 is depressed as V _M1. That is, when learning a blower voltage characteristic in step 405 of FIG. 4 to be described later learns the value of the V _M1. In step 821, a flag HIF indicating that the high switch 374 has been pressed is set.

Next, when the high switch 374 is turned off, NO is determined in step 820, and the flag HIF is reset in step 822. The control in steps 830 to 832 is control when the low switch 371 of the operation unit 37 is pressed. Low switch 3
Since the same control as when the high switch 374 is pressed is performed when the 71 is pressed, the description of the control when the low switch 371 is pressed is omitted. Note that L in FIG.
OF is a flag indicating that the low switch 371 has been pressed.

If none of the four switches of the operation unit 37 has been pressed, step 8
00, step 806, step 810, step 81
6, Step 820, Step 822, Step 83
0, and go to step 832. At this time, since all the flags have been reset, step 4 in FIG.
01 is determined as NO. If any one of the above four switches is pressed, the flag of the pressed switch is set, so that YES is determined in step 401 in FIG.

Next, a method of learning the air blowing characteristics will be described in detail with reference to FIGS. 4, 5A and 5B.
FIG. 4 shows details of the blower voltage control step 400 (FIG. 3).

In step 401 following step 400, it is determined whether or not the air volume is manually set (changed) by the operation unit 37. If there is no manual setting here, N
It is determined as O and the routine proceeds to step 402. Since the initial value of F1 is set to 0 in step 110, NO is determined in step 402 and the process proceeds to step 406.

When the blowing amount is in the automatic control, F2 = 0,
NO is determined in step 406, the process proceeds to step 407, the blower voltage V _F is determined according to the blower voltage characteristic with respect to the target air temperature TAO shown in Figure 5 (a). The blower voltage characteristic is indicative of the blower voltage V _F for the most common human TAO, this property is stored in the ROM.

This characteristic is common in the automatic control of the air flow, and the TAO decreases along the left side of the horizontal axis.
When TAO ≦ T1, the maximum cooling state is reached and the blower voltage is V _H
Becomes This state means that the inside air temperature is considerably higher than the set temperature and the apparatus is in a rapid cooling state.

The TAO is gradually rise from T1, until the T3 to the inside air temperature is approaching the set temperature, blower voltage V _F is gradually reduced. Inside air temperature is in a state close to the set temperature T3 ≦ TAO <T5 in blower voltage V _F becomes V _L is L _O. TAO gradually becomes higher when the blower voltage V _F from the T5 gradually increases.

When TAO ≧ T7, V _F = V _H. This state means that the inside air temperature is considerably lower than the set temperature, and the state is the maximum heating state. The blower voltage characteristic of this TAO is obtained by dividing TAO into eight parts by T1 to T7 in the figure.
For example, seven points (T1, V1), (T2, V2) plotted in a manner such as a blower voltage V1 with respect to T1.
(T3, V3), (T4, V4), (T5, V5),
It is configured as a line connecting (T6, V6) and (T7, V7), and these seven points are stored in the ROM in advance.

In step 407 of FIG. 4, the battery is connected, and if there is no manual setting of the air volume after the power supply of + B is supplied to the microcomputer 31, the most common (individual preference shown in FIG. according learned not) a blower voltage characteristic, it calculates the blower voltage V _F which is based on TAO obtained in step 200 (FIG. 3).

[0047] At step 411, applying a blower voltage V _F which is calculated in step 407 to the blower motor 24 via the drive circuit 30. Thereafter, the process proceeds to step 412, exits the subroutine of step 400, and proceeds to step 5 in FIG.
Go to 00.

Next, when the air volume is manually set (changed) by the operation unit 37, it is determined as Yes in step 401, and the process proceeds to step 408. In step 408, a learning request flag F1 and a flag F2 indicating the manual setting of the air volume are set.
Is set, and the counter CNT1 for indicating the time after the manual setting is cleared. CNT1 is always incremented by a timer interrupt (not shown) at every predetermined time, for example, every 0.1 second.

At step 409, the value of TAO at that time is stored as CTAO, and thereafter the routine proceeds to step 406. In step 406, since F2 = 1 is set in step 408, it is determined as Yes, and step 41 is executed.
Proceeds to 0, changing the blower voltage V _F to manually set the blower voltage V _M. Then the process proceeds to step 411 to control the voltage applied to the blower motor 24 as a blower voltage V _M which is manually set, exit the subroutine proceeds to step 500 of FIG.

Next, if the occupant is manually setting the air volume when subroutine 400 is called, steps 401, 408, 409, 406, 410, and 41 are performed as described above.
The control is performed in the order of 1 and 412 to exit the subroutine, and the applied voltage of the blower motor 24 is controlled so that the blower voltage becomes a manually set blower voltage. However, when the manual setting is completed, No is determined in Step 401, and the process proceeds to Step 402.

In step 402, since F1 = 1 has been set in step 408 as described above, it is determined to be Yes and the process proceeds to step 403. Since CNT1 is cleared to 0 in step 408 and is always incremented every 0.1 seconds as described above, immediately after the completion of the manual setting, CNT1 <C1 (C1 is a constant, where C1 =
50), the determination is No, and step 406 is determined.
Proceed to. In step 406, since the manual setting flag F2 is set to 1 in step 408, the determination is Yes. Thereafter, control is performed in the order of steps 410, 411, and 412 to exit the subroutine, and the blower voltage is set to the manually set blower voltage. , The voltage applied to the blower motor 24 is controlled. The above-mentioned step 40 is performed within 5 seconds after the manual setting is completed.
0, 401, 402, 403, 406, 410, 41
1 and 412 are repeatedly executed.

Thereafter, after the manual setting is completed, 5 (= 0.1 ×
After 50) seconds or more, CNT1 ≧ C1 (= 50), and the determination in Step 403 is “Yes”.
And resets the learning request flag F1.
In step 5, the blower voltage characteristic is changed (learned) according to the manually set state. This change method will be set in detail later. Next, after performing control in the order of steps 406, 410, 411, and 412, the process exits the subroutine.

As described above, when the occupant manually sets the air flow to his or her desired amount, the blower voltage characteristics at the time of the auto operation reflect the occupant's preference after a lapse of a predetermined time (here, 5 seconds) after the manual setting is completed. Change to characteristics.

Thereafter, when the occupant operates the AUTO switch of the operation unit 37, the manual setting flag F2 is reset in step 150 (FIG. 3), and the blower voltage is automatically controlled with the air volume. That No is determined in step 406, calculates the blower voltage V _F by the blower voltage characteristic after learning at step 407, the blower voltage controlling the voltage applied blower motor 24 as a its V _F.

[0055] Therefore, the preference learning at step 405 each time the occupant changes the air volume to suit their own preferences, calculates the blower voltage V _F is the blower voltage characteristic after incorporating learned preferences during automatic operation is, the blower voltage controlling the voltage applied blower motor 24 as a its V _F.

Here, the reason why the learning is performed in step 405 only when a predetermined time has elapsed after the completion of the manual setting of the air flow rate is that learning is performed when the occupant is manually setting, or when learning is manually performed by mistake. This is to avoid learning and learning when the occupant prefers a short-term change in the air flow.

Next, the learning method in step 405 will be described in detail with reference to FIGS. 5 (a) and 5 (b). As described above, the most common blower voltage characteristics are indicated by solid lines in FIG. 5A and broken lines in FIG. 5B, and the seven points (T1, V1), (T2,
V2), (T3, V3), (T4, V4), (T5, V
5), (T6, V6) and (T7, V7) are stored in the ROM. Here, the TAO is divided into eight by T1 to T7.
09 is stored as CTAO.
If the value of AO is CTAO ≦ T1, T1 <CTAO <T
7 and the case of CTAO ≧ T7 will be described.

When CTAO ≦ T1, for example, when CTAO is at point A in FIG. 5B, the blower voltage is automatically set to V1.
Occupant manually operates the blower voltage V
_When set to _A , the blower voltage V after manual setting
1 is learned and changed to V1N according to the following equation (2).

[0059]

V1N = V1 + α (V _A −V1) Here, α is a constant. For example, if α = 0.3, as shown in FIG. It changes to the blower voltage characteristic reflecting the preference.

When T1 <CTAO <T7, for example, C
When TAO is point B shown in FIG. 5 (b) is a T4 ≦ CTAO <T5, a place where the blower voltage is controlled to V4 (= V5) auto, so that the occupant is manually blower voltage V _B When V is set, V4 and V5 are learned, and are changed to V4N and V5N according to Equations 3 and 4 below.

[0061]

(Equation 3)

[0062]

(Equation 4) That is, a search is made as to which section of CTAO is between T1 and T7, and CTAO at that time is T _n ≦ CTAO <T
When n + 1 (n = 1 to 6), two blower voltages Vn and Vn + 1 corresponding to the section are learned according to the following Expressions 5 and 6.

[0063]

(Equation 5)

[0064]

(Equation 6) When CTAO ≧ T7, for example, when the blower voltage is automatically controlled to V1 when the CTAO is at the point C in FIG. 5B, if the occupant manually sets the blower voltage to the blower voltage V _C , The blower voltage V7 after the manual setting is learned, and is changed to V7N according to the following equation (7).

[0065]

[Equation 7] _{V7N = V7 + α (V C} -V7) as explained above, each time the occupant to manually set the blower voltage to suit your preference, learning takes in the blower voltage after the set. That is, the contents V1N, V2N, V3N, V4N, V5N, and V6 learned in the standby RAM.
N and V7N are fetched, and the values are updated to values reflecting the occupant's preference and stored. By repeating this cycle, the updated blower voltage characteristics match those of the occupant.

The embodiment of the present invention has been described above. In the above-described embodiment, when the occupant manually changes the setting of the air volume blown out automatically (based on the blowing characteristics), this setting change value is set. Is learned and reflected in the air blowing characteristics, so that the occupant has an effect that the occupant feels comfortable by blowing out a wind having an air volume that suits his / her preference.

Further, in one embodiment, since the occupant learns the air volume that has been manually changed, the air blowing characteristics match the user's preference. As a result, the number of times that the occupant manually operates the air volume is reduced. This has the effect that it can be reduced.

In one embodiment, an up switch 373 and a down switch 372 are provided as the operation unit 37.
By operating these, the air volume can be set finely, so that the occupant can set the air volume very close to the air volume that he / she wants to set. This also gives
Since the airflow characteristics are learned and changed so as to be very close to the airflow that the occupant wants to set, it is possible to make the airflow characteristics truly suit the user's taste.

In one embodiment, the blower voltage is set to the minimum voltage (4 volts) or the maximum voltage (12 volts) by pressing the low switch 371 or the high switch 374 of the operation section 37. The value to be learned is to learn a voltage 1 volt higher than the lowest voltage or a voltage 1 volt lower than the highest voltage. In other words, as a case where the low switch 371 or the high switch 374 is pressed, a case where the occupant presses these switches to listen to the radio or the story of a person can be considered, and the operation of the switches for such a reason is not learned.
However, the problem can be solved by learning a voltage 1 volt higher than the minimum voltage or a voltage 1 volt lower than the maximum voltage as in one embodiment.

In the above-described embodiment, the contents of the learned IG. Although the standby RAM is used to store data even when the power is off, a non-volatile memory may be used without using the standby RAM. Also in this case, IG. When the power is turned off and the power supply from the battery is stopped, the learned contents are saved.

In the above embodiment, the target blow temperature is set to 7
Although it is divided into eight at one point, it may be divided more finely (for example, 200) or coarsely (for example, four).

In the above embodiment, the TAO is divided over the entire temperature range, and the blower voltage characteristics are changed by learning at all the corresponding blower voltages. May be.

In the above embodiment, CTAO is equal to Tn.
When ≤CTAO <Tn + 1, only VnN and Vn + 1N are learned and the values are updated, but Vn-1N and Vn + 2, or the values may be updated and learned more widely.

In the above embodiment, the low switch 37 is used.
When 1 or the high switch 374 is pressed, the voltage is 4 volts, 1 volt higher than 4 volts, or 1 volt above 12 volts.
I added or subtracted a voltage of 1 volt as if I had learned a volt lower voltage, but not limited to this,
A value of about 20% of the difference from the blower voltage actually changed by the occupant may be added or subtracted.

In the above embodiment, the blower voltage is increased or decreased by 0.25 volts by continuously operating the up switch 373 or the down switch 372 of the operation section 37 for less than 0.5 second, thereby increasing the blower voltage by 0.55 second. By continuing the operation for the above time, the voltage is increased or decreased by 0.25 volts every 0.1 second.
Numerical values such as seconds and 0.25 volts may be arbitrarily selected. Further, as shown in FIG. 9, the speed at which the switches 372 and 373 are pressed may be changed depending on how long the switches are pressed.

[0076]

As described above, according to the present invention, the air blowing characteristics can be changed over an arbitrary range of the target outlet temperature information, so that the occupant can enjoy a comfortable feeling in any air condition of the vehicle cabin. it can.

[Brief description of the drawings]

FIG. 1 is a diagram corresponding to claims of the present invention.

FIG. 2 is an overall configuration diagram of one embodiment of the present invention.

FIG. 3 is a flowchart showing air conditioning control of the microcomputer of the embodiment.

FIG. 4 is a flowchart showing detailed control of step 400 in FIG. 3;

FIG. 5A is a characteristic diagram showing air blowing characteristics stored in the microcomputer, and FIG. 5B is a characteristic diagram showing air blowing characteristics after learning control.

FIG. 6 is a plan view of the operation unit of the embodiment.

FIG. 7 is a flowchart showing detailed control of step 150 in FIG. 3;

FIG. 8 is a flowchart showing detailed control of step 150 in FIG. 3;

FIG. 9 is a graph showing a blower voltage change speed with respect to an operation time of an up switch and a down switch of an operation unit in another embodiment.

[Explanation of symbols]

 Reference Signs List 23 fan as blower 24 blower motor as blower 30 drive circuit as drive means 33 inside air temperature sensor as environmental condition detection means 34 outside air temperature sensor as environmental condition detection means 35 solar radiation sensor as environmental condition detection means 36 environmental condition detection Temperature setting switch 37 as operation means Operation section as air blowing amount manual setting means Step 200 Target blowing temperature information calculating means Step 405 Air blowing characteristic changing means Step 407 Air blowing characteristic storage means and air blowing amount determining means T1 to T7 Point

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takamasa Kawai 1-1-1, Showa-cho, Kariya-shi, Aichi Japan Inside Denso Co., Ltd. (58) Field surveyed (Int. Cl. ⁷ , DB name) B60H 1/00 101

Claims (2)

(57) [Claims] 1. A blower for blowing air into a vehicle interior, an environmental condition detecting means for detecting an environmental condition affecting an air-conditioning state in the vehicle interior, and an air blown into the vehicle interior based on a detection signal of the environmental condition detecting means. A target blowing temperature information calculating means for calculating target blowing temperature information; and a blowing characteristic which is a relative relationship between the target blowing temperature information calculated by the target blowing temperature information calculating means and a blower voltage of the blower. Air blowing characteristic storage means stored at a plurality of points; air blowing amount determining means for determining an air blowing amount of the air blower based on the air blowing characteristics stored in the air blowing characteristic storing means; air blowing amount of the air blower Air volume manual setting means for manually setting, and a driving means for controlling the driving of the blower based on each output signal of the air volume determining means and the air volume manual setting means. In the vehicle air volume control device provided, when the air volume is changed by the air volume manual setting means in a region between the predetermined points in the air volume characteristic, the blowers at the points located at both ends of the region. An air flow control device for a vehicle, comprising: a blowing characteristic changing unit that changes a voltage. 2. The target outlet temperature information is divided into a plurality of sections by the plurality of points stored in the air blowing characteristic storage means, and the respective blower voltages are not erased even when an ignition switch is turned off. In a vehicle air volume control device adopting a learning method of storing on a memory and updating and storing the plurality of blower voltages based on the manual setting of the air volume, the manual operation is performed when the air volume is manually set. The air volume control device for a vehicle, wherein the manually set air volume is learned only when a predetermined time has elapsed after the setting.