JP2921290B2 - Automotive air conditioners - 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, which automatically adjusts an air condition in a passenger compartment to a target air condition.

[0002]

2. Description of the Related Art In a vehicle air conditioner, a room temperature set by an occupant's operation, a room temperature detected by a room temperature sensor provided in a vehicle interior (hereinafter simply referred to as a detected room temperature), and a vehicle body are provided. Based on the solar radiation amount detected by the solar radiation amount sensor and the thermal environment information inside and outside the vehicle interior such as the outside air temperature detected by the outside air temperature sensor provided on the vehicle body, the target outlet temperature as the optimal target air conditioning condition is calculated. A so-called automatic air conditioner (automatic air conditioner) that blows conditioned air into the vehicle interior according to a preset air volume control characteristic based on the target air outlet temperature so that the air conditioning state in the vehicle interior becomes the target air conditioning condition is known. Are known.

The automatic control of the air volume in this automatic air conditioner will be described. A room temperature sensor, an outside air temperature sensor, a room temperature setting device,
Room temperature Tic detected from solar radiation sensor etc., outside temperature Tam
b, set room temperature Tset, solar radiation amount Qsun, target blowing temperature equation, Tof = A × Tic + B × Tamb + C × Tset + D
× Qsun + E, where A, B, C, D, and E are constants, to calculate the target outlet temperature Tof. Then, the blower fan motor applied voltage Vfan is calculated from the air volume control characteristic shown in FIG. 16 based on the target blowout temperature Tof, and by driving this blower fan motor,
Air volume is automatically controlled.

[0004] The target outlet temperature Tof is generally used as a control index of an automatic air conditioner, and is defined as an outlet temperature necessary for setting a vehicle interior temperature to a set temperature Tset in a certain thermal environment. Have been. Therefore, the lower the target blowing temperature Tof,
This means that the vehicle interior temperature is high and the cooling load is high, and that the higher the target blowout temperature Tof, the lower the vehicle interior temperature and the higher the heating load.

Therefore, in the air volume control characteristics shown in FIG. 16, when the target blow-out temperature Tof is lower than the maximum air volume switching value F on the cooling side and higher than the maximum air volume switching value J on the heating side, Since it can be seen that the cooling or heating load is high, respectively, the blower fan motor applied voltage Vfan is set to the maximum level Vm at the vehicle power supply.
ax (for example, 12 V). When the minimum air volume switching value G on the cooling side is smaller than the target air temperature Tof <the minimum air volume switching value H on the heating side, the target air temperature Tof is increased or decreased so as to be a preset low level _VL. The blower fan motor applied voltage Vfan is set so as to take a value on a straight line connecting the preset high level _VH and low level _VL .

Therefore, according to the above-mentioned automatic air flow control,
For example, when the cooling load is very high, for example, in the early stage of cooling after parking under the hot sun in summer, the blower fan is driven at the maximum capacity, so-called cool-down (rapid cooling) is performed. Then, the vehicle interior temperature decreases, and the target outlet temperature T
When of rises the maximum air volume switching value F at the cooling side, the blower fan motor applied voltage Vfan descends from a maximum level Vmax to the high level V _H, then gradually with increasing target outlet temperature Tof Go down.

[0007] However, among human warmth and sensation, the preference for airflow is one of the items in which individual differences are significant. For example,
During cooling, the occupant who dislikes the blowing air at the maximum air volume operates the blower fan switch before the target blowing temperature Tof reaches the maximum air volume switching value F (when the target blowing temperature Tof is equal to or less than the maximum air volume switching value F). do it,
The blower fan motor applied voltage Vfan is reduced to reduce the amount of blown air. Such an occupant frequently operates the blower fan switch during the cool down, and cannot sufficiently receive the effect of the automatic air flow control.

Therefore, for example, as disclosed in Japanese Patent Application Laid-Open No. 3-54015, there has been proposed an automatic air conditioner which sequentially corrects the air volume control characteristics according to the occupant's feeling. In this automatic air conditioner, the target outlet temperature To
When the occupant operates the blower fan switch to reduce the blower fan motor applied voltage Vfan to a voltage lower than the maximum level Vmax before f reaches the maximum air volume switching value F set in the air volume control characteristic. The value obtained by subtracting the correction value α set to a constant value from the maximum air volume switching value F is updated as a new maximum air volume switching value F = F−α, and this new maximum air volume switching value F is used at the next cool-down control. = F-α. Conversely, the crew
When the blower fan motor applied voltage Vfan is corrected to the maximum level Vmax again at the target blowing temperature Tof higher than the initial maximum air volume switching value F, a value obtained by adding the correction value α to the maximum air volume switching value F is used as the new maximum value. The air volume switching set value F + α is updated.

[0009]

However, in the automotive air conditioner disclosed in Japanese Patent Application Laid-Open No. 3-54015, the correction value α is a constant value. There may be cases where it is not corrected. In other words, in this automotive air conditioner, the opportunity to correct the maximum air flow rate switching value F is limited to the case where the temperature in the vehicle interior at the beginning of riding after leaving in the hot sun is high, and is limited to once during one riding. I have. Moreover, once the maximum air volume switching value is updated, the updated maximum value switching value F = F−α or F = F + α is adopted at the next riding.

However, only once, a fixed correction value α
Is not necessarily changed to the optimal airflow control characteristic for the occupant, and the updated maximum value switching value F = F
If the user does not like -α or F = F + α, the blower fan switch is operated again at the next ride.

However, regardless of whether the difference between the target blowout temperature Tof and the maximum switching value F when the blower fan switch is operated is large or small, the constant correction value α
Even if the occupant wants the air volume to be greatly corrected, or the occupant who wants to make a small correction, only one operation of the blower fan switch automatically Will not be fixed.

Therefore, the occupants who want to make major corrections are:
Since the operation of the blower fan switch is repeated many times, the occupant who does not want to make the correction too much has too large a correction amount, and needs to return to the original maximum air volume switching value F again. It was not enough to fully satisfy the individual differences in flu.

In view of the above, the present invention corrects the air volume control characteristic in accordance with air volume change information in which the occupant switches the air volume from automatic control to manual control so that the air volume during automatic control is suitable for the occupant's sense of airflow. The task is to do.

[0014]

According to a first aspect of the present invention, as shown in FIG. 1, heat inside and outside the vehicle such as a detected room temperature, an outside air temperature, an amount of solar radiation, and a set room temperature inputted from a thermal environment information detecting means a. A target air-conditioning condition is calculated based on the environmental information, and an air volume automatic control unit c for air-conditioning the vehicle interior by driving the air blowing means b of the air conditioner main body so that the air-conditioning state in the vehicle interior becomes the target air-conditioning condition.
In the air conditioner for a vehicle provided with the above, an air flow control selecting means d capable of selecting whether the air flow of the conditioned air is automatically controlled or manually controlled by an occupant's operation, and this air flow control selecting means d
The target air conditioning condition when the air volume is changed from the maximum air volume to the lower air volume or the air volume below the maximum air volume is changed to the maximum air volume by switching from the automatic control to the manual control is stored as air volume change information , Always the latest few winds
A flow rate change information storage means e for storing the amount change information, the switching value to less air volume from a maximum air volume of the air volume automatically controlled manual c in accordance with the air volume change information from the air volume change information storage means e, or, Airflow characteristic correction means f for correcting a maximum airflow switching value such as a switching value from an airflow below the maximum airflow to the maximum airflow.

[0015]

According to a second aspect of the present invention, in the first aspect, the air volume control characteristic correcting means f calculates the individual air volume change information stored in the air volume change information storage means e from the thermal environment information. The weight of the individual air volume change information is calculated by a nearly normal distribution function using the target air conditioning condition as a variable and the current maximum air volume switching value as an average value at all times, and the weight, the individual air volume change information and the maximum air volume switching are calculated. Means are provided for correcting the maximum air volume switching value by a correction term calculated from the deviation from the value.

According to a third aspect of the present invention, in the second aspect , the air flow rate control characteristic correcting means f determines the elapsed time after the completion of the correction, the operation amount of the manual control switching of the air flow rate, the elapsed time from the start of use of the air conditioning control, and the like. Means are provided for calculating the degree of satisfaction of the occupant with respect to the air volume control characteristic, and for setting the variance of the weight for the normal distribution function in an inversely proportional relationship according to the degree of satisfaction.

According to a fourth aspect , in the first aspect, the air volume control characteristic correction means f includes an air volume control characteristic in an intermediate air volume range from the corrected maximum air volume switching value to the minimum air volume switching value in the intermediate air volume range. Depending on the switching state from automatic control of the air volume to manual control, the air volume control characteristic of the initial setting is substantially parallel or between the corrected maximum air volume switching value and the initial stable air volume switching value. Means are provided for determining whether to perform linear interpolation and correcting the linear interpolation.

[0019]

According to the first aspect of the present invention, each time the occupant operates the air volume control selection means d and the air volume is switched from automatic control to manual control, the air blowing means b is driven by manual control while the air volume change information storage is performed. The means e takes in the target air-conditioning conditions at the time of switching from the automatic airflow control means c and outputs it to the airflow control characteristic correction means f as airflow change information. Then, the air volume control characteristic correction unit f outputs a correction command to the air volume automatic control unit c, and the maximum air volume switching value of the air volume control characteristic preset in the air volume automatic control unit c becomes the target air conditioning condition at the time of the switching. Correction is made according to the air volume change information. This allows
At the time of automatic control of the air volume, the air blowing means b is driven based on the corrected air volume control characteristic. Maximum air flow control characteristics
When changing the air volume switching value, change the air volume for the latest several times
By capturing information, switching operations that are different from normal
Reduce the influence of the work.

[0020]

According to a second aspect , in the first aspect, when correcting the maximum air volume switching value of the air volume control characteristic, a probability and a deviation with respect to the past correction are taken in.
Perform more stable correction.

According to a third aspect of the present invention, in the second aspect , the variance of the weight for the normal distribution function is set in an inversely proportional relationship in accordance with the degree of satisfaction of the occupant with the air volume control characteristic, thereby correcting the maximum air volume switching value. Increase accuracy.

According to a fourth aspect , in the first aspect, the air volume control characteristic in the intermediate air volume range is corrected according to the air volume change information in which the air volume is switched from automatic control to manual control in the maximum air volume range. In the intermediate air volume range during automatic control,
This enables both the occupant's preference for reducing the air volume and the shortening of the time required for the vehicle room temperature to reach the set room temperature.

[0024]

【Example】

First Embodiment FIG. 2 shows a vehicle air conditioner as a first embodiment. In FIG. 2, the air conditioner main body 1 includes a blower unit 2, a cooling unit 3, a heater unit 4, and a duct unit 5 as the above-described blowing means b.

The blower unit 2 has an outside air inlet 6,
Inside air inlet 7, intake door 8, blower fan 9
Are provided. The outside air inlet 6 receives outside wind pressure to introduce outside air. The inside air inlet 7 introduces air in the vehicle compartment. The intake door 8 opens and closes the outside air inlet 6 and the inside air inlet 7 at an arbitrary ratio by an actuator 10 driven by a control device 50 described later. Blower fan 9
It is rotationally driven by a blower fan motor 11 as an actuator driven by the control device 50.

The cooling unit 3 is provided with an evaporator 12. The evaporator 12 cools the passing air with a refrigerant supplied from a refrigeration cycle including a compressor (not shown), a condenser (not shown), an expansion valve (not shown), and the like.

The heater unit 4 includes a heater core 13
, Air mix door 14, and air mix chamber 1
5 is provided. The heater core 13 warms the passing air with hot water supplied from a heating cycle including an unillustrated engine, an unillustrated hot water cock, an unillustrated expansion valve, and the like. The air that has been cooled by passing through the evaporator 12 by the actuator 16 driven by the control device 50 is cooled by the actuator 16 driven by the control device 50, and cools by passing through the heater core 13 and passing through the evaporator 12. The air is opened and closed so as to adjust the ratio of the air passing through the heater core 13 and being warmed.

The duct unit 5 includes a defroster duct 17, a ventilator duct 18, and a foot duct 19
, A defroster door 20, a ventilator door 21,
A foot door 22 is provided. Defroster duct 17
Is connected to a defroster outlet 24 provided in the instrument panel 23, and blows out conditioned air toward a front window (not shown). Defroster outlet 2
4 is provided with a louver 25 as a wind direction setting device.
The ventilator duct 18 is connected to the instrument panel 2.
3 is connected to the ventilator outlet 26 provided in the air conditioner 3 and blows out conditioned air toward the upper body of the occupant. A louver 2 as a wind direction setting device is provided in the ventilator outlet 26.
7, 28 are provided. The outlet of the foot duct 19 blows out conditioned air toward the feet of the occupant. Each of the defroster door 20, the ventilator door 21, and the foot door 22 includes an actuator 29 driven by a control device 50,
The defroster duct 17, the ventilator duct 18, and the foot duct 19 are individually opened and closed by means of 30, 31.

An indicator 32 is provided on a portion of the instrument panel 23 which is easy for the occupant to see. The display 32
By the output from the control device 50, for example, thermal environment information,
Alternatively, the target air conditioning conditions, or, such as the actual blowing air temperature, control information of the air conditioner is displayed so that the occupant can see or hear, for example, it is configured with a light emitting device or a sound generating device ing.

The thermal environment information detecting means 35 detects a plurality of pieces of thermal environment information inside and outside the vehicle interior.
6, an outside air temperature sensor 37, an insolation sensor 38, and a room temperature setting device 39. The room temperature sensor 36 detects the current atmosphere temperature in the vehicle cabin as a detected room temperature Tic, and outputs a quantity of electricity corresponding to the detected room temperature Tic to the control device 50.
Output to The outside air temperature sensor 37 detects the current outside air temperature as the outside air temperature Tamb.
The amount of electricity corresponding to mb is output to the control device 50. The solar radiation sensor 38 outputs an electric quantity according to the received solar radiation Qsun to the control device 50. An air-conditioning switch 39 (A / C switch) is provided on an air-conditioning operation panel (not shown) which is generally disposed in a part of the passenger compartment that is easily operated by an occupant.
4 and auto switch 45 and blower fan switch 4
6, the intake mode setting unit 47, and the outlet mode setting unit 48 are assembled together, and the temperature desired by the occupant is set as the set room temperature Tset by the operation of the occupant, and the amount of electricity according to the set room temperature Tset is controlled by the control unit. Output to 50.

The blower fan switch 46 is operated by the occupant, for example, in "1st speed", "2nd speed", "3rd speed",
A blower fan motor applied voltage Vfanm corresponding to one of “fourth speed” is output to control device 50. "1st speed", "2nd speed", "3rd speed", "4th speed" of the blower fan switch 46
Are divided in order from the low voltage side to the high voltage side, and "fourth speed" is equal to the maximum level Vmax.

The auto switch 45 and the blower fan switch 46 constitute air flow control selecting means 49.

The control device 50 includes the above-mentioned automatic air volume control means c, the above-mentioned air volume information storage means e, and the above-mentioned air volume control characteristic correction means f, and is constituted by a microcomputer which is started by turning on the air conditioner switch 44. ing.
The control device 50 operates the blower fan switch 46, the intake mode setting device 47, and the outlet mode setting device 48 to change the detected room temperature Tic to the set room temperature Tset in accordance with a manual program preset as a system base in the memory of the microcomputer. The driving of the air conditioner main body 1 is controlled so that In the drive control according to this manual program, the airflow of the conditioned air is selected by the operation amount of the blower fan switch 46 by the occupant. In the intake mode, one of an inside air circulation mode, an outside air introduction mode, a semi-inside air circulation / semi-outside air introduction mode, or the like is selected by an operation of the occupant of the intake mode setting unit 47. The outlet mode is, for example, one of a vent mode, a foot mode, and a defrost mode selected by an occupant operating the outlet mode setting device 48.

The control device 50 includes an auto switch 4
In accordance with an automatic program preset as a system base in the memory of the microcomputer, the ON operation of the microcomputer 5 according to the thermal environment information such as the detected room temperature Tic, the outside temperature Tamb, the solar radiation amount Qsun, and the set room temperature Tset, etc. The drive of the air conditioner body 1 is controlled so that the thermal environment state becomes the target thermal environment state.

In FIG. 1, reference symbol S ₁ denotes a signal line from the control device 50 to the actuator 29, and S ₂ denotes a signal line from the control device 50 to the display 32.

The operation of the first embodiment will be described in detail with reference to the flowchart shown in FIG.

When the air conditioner switch 44 is turned on and the air volume control is started in step 101, the flow proceeds to step 102.
In the initial setting, the fan maximum flag is turned on, the initial control end flag and the correction end flag are turned off, the thermal sensation reflection timer is reset and set, and the measurement of the thermal sensation reflection elapsed time t is started. Then, in step 103, the detected room temperature Tic, the outside air temperature Tamb, the set room temperature Tset, and the insolation Qsun output from the room temperature sensor 36 and the outside air temperature sensor 37, the insolation amount sensor 38 and the room temperature setting device 39, respectively, are used as target blowing temperature equations. Tof = A × Tic + B × Tamb + C × Tset + D
× Qsun + E (A, B, C, D, and E are constants) to calculate the target outlet temperature Tof.

In step 104, it is determined whether or not the manual control of the air volume has been selected. That is, when the occupant operates the auto switch 45 and the automatic air volume control is selected (NO in step 104), step 105
To perform the air volume automatic control. Conversely, if the occupant operates the blower fan switch 46 and the air volume manual control is selected (YES in Step 104), Step 11
Proceed to 2 to perform air volume manual control.

That is, in the case of the air volume automatic control, in step 105, the correction end flag is turned off, and in step 106, the target outlet temperature Tof is compared with the air volume control characteristic preset in the control device 50, and the blower is operated. Calculate the fan motor applied voltage Vfan,
At 07, it is determined whether or not the blower fan motor applied voltage Vfan is at the maximum level Vmax. If the blower fan motor applied voltage Vfan is at the maximum level Vmax (YES in step 107), in step 108, the fan maximum flag is turned on. If the blower fan motor applied voltage Vfan is not the maximum level Vmax (NO in step 107), in step 109, the fan maximum flag is turned off.

Subsequently, in step 110, the blower fan motor application voltage Vfan is set in the control device 50 in advance to determine whether the initial control of the cool down or the warm up (rapid heating) has been completed. to determine exceeds the initial control determination value V _0.
The initial control determination value V ₀ is usually set at step 105 in order to allow more occupants to feel comfortable.
It is set to a value slightly lower than the high level V _H shown in the air flow control characteristics. When the blower fan motor applied voltage Vfan is higher than the initial control determination value V ₀ (Step 110 is Y
ES) means that cooling down or warming up is being performed, so in step 122, the blower fan motor applied voltage Vfan is output to the blower fan motor 20, and the process returns to step 103.

Conversely, the blower fan motor applied voltage Vfa
If n is equal to or less than the initial control determination value V ₀ (NO in step 110), it means that the cool-down or the warm-up has been completed, and in step 111, the initial control end flag is turned on. , Step 1
At step 22, the blower fan motor application voltage Vfan is output to the blower fan motor 20.
Return to

In the case of manual air volume control, step 1
At 12, it is determined whether the correction end flag is on. This correction end flag indicates that the air conditioner switch 4
The correction process is limited to one time during the period from when the 4 is turned on or when the blower fan switch 46 is operated and the auto switch 45 is turned on again to cancel the manual control of the air volume. This is a flag for Therefore, when the correction end flag is ON (YES in step 112), it is determined that the maximum air flow switching value F or J has been corrected after the air flow has been switched from the automatic control to the manual control. So it means
In step 122, the blower fan motor 20
The blower fan motor applied voltage Vfanm is output, and the process returns to step 103.

Conversely, if the correction end flag is not turned on (NO in step 112), the maximum air flow switching value F or J is corrected after the air flow is switched from automatic control to manual control. Therefore, in step 113, the elapsed time t reflecting the thermal sensation is reflected.
Is longer than a set time t ₀ preset in the control device 50.

If the thermal sensation reflection elapsed time t is within the set time t ₀ (NO in step 113), step 122
, The blower fan motor applied voltage Vfanm is output to the blower fan motor 20, and the process returns to step 103. That is, immediately after the air conditioner body 1 is driven, the occupant operates the blower fan switch 46 to switch the air volume from the automatic control to the manual control, not because of dissatisfaction with the air volume set by the air volume automatic control.
Just like the crew wants to hear the music on the audio device,
Regardless of the occupant's sense of warmth or cold, the sound of the air blown out from the air conditioner main body 1 into the passenger compartment is bothersome, such as when the air flow is reduced or when the air flow is increased in order to effectively operate the defroster. Often done.
Therefore, it is hard to say that correcting the air volume control characteristic shown in step 106 from the operation information of the blower fan switch 46 during the set time t ₀ accurately reflects the occupant's feeling of warmth and cold. For this reason, the air flow control characteristics are not corrected by switching from automatic control of the air flow to manual control within a fixed time of a set time t ₀ from the start of driving of the air conditioner body 1.

Conversely, if the elapsed time t for reflecting the thermal sensation has passed the set time t ₀ and is not immediately after the start of driving of the air conditioner body 1 (YES in step 113), step 1
At 14, it is determined whether the initial control end flag is on. If the initial control end flag has been turned on and the initial control has ended (YES in step 114), it means that the cool-down or the warm-up has ended, so that the air flow control characteristics In step 121, the correction end flag is turned on without performing the correction, and in step 122, the blower fan motor applied voltage V is applied to the blower fan motor 20.
fanm is output, and the process returns to step 103.

Since the initial control end flag is off, if the fan is cooling down or warming up (NO in step 114), the fan maximum flag is turned on in step 115. To determine if If the fan maximum flag is ON (YES in step 115), step 104 is executed during cool down or warm up.
Means that the air volume switched from the automatic control to the manual control by the operation of the blower fan switch 46 in the step is changed from the maximum air volume to the air volume smaller than the maximum air volume. move on.

Conversely, when the fan maximum flag is off (step 115 is NO), step 116
It is determined whether or not the blower fan motor applied voltage Vfanm is at the maximum level Vmax. If the blower fan motor applied voltage Vfanm is at the maximum level Vmax (YES in step 116), during the cool down or the warm-up, the blower fan switch 46 in step 104 is operated to change from automatic control to manual control. Means that the air volume has been changed from the air volume lower than or equal to the maximum air volume to the maximum air volume, so that the flow proceeds to step 117 to correct the air volume control characteristics.

Further, the blower fan motor applied voltage Vf
When anm is not the maximum level Vmax (step 11)
6 is NO), the air volume switched from the automatic control to the manual control by the operation of the blower fan switch 46 in step 104 is the maximum air volume even during the cool down or the warm up. Since it means that the following one air volume has been changed to another air volume below the maximum air volume, the correction end flag is turned on in step 121 without correcting the air volume control characteristic, and in step 122, the blower The blower fan motor applied voltage Vfanm is output to the fan motor 20, and
Return to 03.

On the other hand, in step 117, the target blowing temperature Tof is compared with the minimum air flow switching value G in the air flow control characteristic shown in step 106, and it is determined whether the cooling operation or the heating operation is being performed. When the target blowing temperature Tof is equal to or less than the minimum air flow rate switching value G (step 117 is YE
Since S) means that the cooling operation is being performed, the database on the cooling side in the air volume control characteristics is updated in step 118, and the correction calculation of the maximum air volume switching value F is performed in step 120.

Conversely, if the target outlet temperature Tof is larger than the minimum air volume switching value G (step 117 is N
Since O) means that the heating operation is being performed, the database on the heating side in the air volume control characteristics is updated in step 119, and the correction calculation of the maximum air volume switching value J is performed in step 120.

Here, the databases in steps 118 and 119 are stored in a non-volatile RAM (RAM), and the capacity is determined according to the human sense of heat and cold. In other words, the databases on the cooling side and the heating side can correct the maximum air volume switching values F and J in the air volume control characteristics based on the knowledge always reflecting the occupant's thermal sensation during the season or season. As described above, the target blowout temperature To at the time of operating the latest N times of the blower fan switch 46 to be corrected is To
f is stored. Then, when storing the (N + 1) th target blowing temperature Tof, the oldest target blowing temperature Tof is forgotten. The value of N is, for example, 20
It is set in advance, such as times. As a result, the maximum air volume switching values F and J are obtained from the target outlet temperature Tof at the time of operating the blower fan switch 46 up to the last 20 times.
, And learning of air volume control optimal for the season at the time of use and the physical condition of the occupant can be performed.

The correction calculation in step 120 is performed as follows. For cooling, assuming that the i-th target outlet temperature Tof in the database of step 118 is Tof (i), the correction amount ΔF is calculated by a cooling-side correction calculation formula:

[0053]

(Equation 1)

Is calculated from Here, K is a gain constant. W (Tof (i)) is the target outlet temperature To
It is a function of f, and is a weight for the correction width for each switching count from the automatic control of the air volume to the manual control. This function W
(Tof (i)) has a substantially normal distribution shape in which Tof = F has an average value, as shown in FIG. Then, when the maximum air volume switching value F is updated, the updated maximum air volume switching value F becomes an average value of the past N times. That is, the weight increases as the target outlet temperature Tof approaches the maximum switching value F. This allows, for example,
Normally, near the maximum air volume switching value F, the occupant who has switched from automatic control of the air volume to manual control is separated from the maximum air volume switching value F for some reason.
Even if switching from automatic control of air volume to manual control,
The sudden effects are reduced. Further, even in the case of an occupant who easily switches from automatic control of the air volume to manual control at a distance from the initially set maximum air volume switch value F, the updated maximum air volume switch value F is always equal to the average value. Therefore, it is corrected several times to a value distant from the initially set maximum air volume switching value F, and once corrected, the weight near the corrected maximum air volume switching value F increases, and the occupant becomes It is possible to correct the maximum air volume switching value F in accordance with the characteristic of (1). When ΔF is calculated, F = F + ΔF becomes a new maximum air volume switching value during the cooling operation.

Also during the heating operation, the correction is made by the same method as described above. That is, the correction amount ΔJ is calculated by the following equation:

[0056]

(Equation 2)

J = J + ΔJ is a new maximum air volume switching value during the heating operation.

Then, after the correction calculation of the maximum air volume switching value is performed in step 120, the correction end flag is turned on in step 121, and in step 122, the blower fan motor applied voltage Vfanm is applied to the blower fan motor 20. And returns to step 103.

In short, according to the first embodiment, the occupant operates the blower fan switch 46 while the air conditioner main body 1 is driven and the conditioned air is being blown into the vehicle compartment by the automatic air flow control, and the air flow is controlled. There whenever a is switched to manual control from the automatic control, have elapsed from the start of driving the air conditioner main body 1 predetermined set time t ₀ or more (step 113
Is YES), during cooling down or warming up (NO in step 114), and when the air volume is switched from the maximum air volume to a lower air volume (step 115).
Is YES) or when the air volume is switched from the air volume below the maximum air volume to the maximum air volume (step 115 is NO and step 116 is YES), that is, the maximum air volume switching value F, in the air volume control characteristic in the maximum air volume region. J is the latest N number of blower fan switches 46 according to the cooling side and the heating side.
Weight W based on the target outlet temperature Tof at the time of operation
(Tof (i)). Therefore, the maximum air volume switching values F and J are corrected to the optimal values for the season at the time of use, the physical condition of the occupant, and the like. In addition, each time the air flow is switched from the automatic control to the manual control, the air flow control characteristic is corrected to the optimum value, so that the memory capacity can be reduced.

Second Embodiment In the second embodiment, when the air flow is switched from automatic control to manual control, the blower fan motor applied voltage Vfa
It is characterized in that it is determined whether or not nm has been changed during one scan of the microcomputer CPU. Therefore, the second embodiment will be described with reference to the flowchart shown in FIG. In the description of the second embodiment, the reference numerals given to the respective components of the vehicle air conditioner are based on FIG.

When the air conditioner switch 44 is turned on and the air volume control is started in step 201, the flow proceeds to step 202.
In the initial setting, the fan maximum flag is turned on, the initial control end flag and the correction end flag are turned off, and in step 203, the target temperature is determined from the detected room temperature Tic, the outside air temperature Tamb, the set room temperature Tset, and the amount of solar radiation Qsun. The blowout temperature Tof is calculated, and in step 204, it is determined whether or not the manual control of the air volume has been selected. That is, when the occupant operates the auto switch 45 and the automatic air volume control is selected (step 204 is N
In step O), the process proceeds to step 205 to perform automatic air volume control. Conversely, the occupant operates the blower fan switch 46,
If the manual air flow control is selected (YES in step 204), the process proceeds to step 212 to perform the manual air flow control.

That is, in the case of the air volume automatic control, in step 205, the correction end flag is turned off, and in step 206, the target outlet temperature Tof is compared with the air volume control characteristic preset in the control device 50, and the blower is operated. The fan motor applied voltage Vfan is calculated. And
Blower fan motor applied voltage Vfan is at maximum level Vm
If it is ax (YES in step 207), in step 208, the fan maximum flag is turned on,
Blower fan motor applied voltage Vfan is at maximum level Vm
If it is not ax (NO in step 207), in step 209, the fan maximum flag is turned off.
Subsequently, when the blower fan motor applied voltage Vfan is higher than the initial control determination value V ₀ (step 210 YE
S) means that cooling down or warming up is being performed, so in step 224, the blower fan motor applied voltage Vfan is output to the blower fan motor 20, and the process returns to step 203.

On the contrary, the blower fan motor applied voltage Vfa
If n is equal to or less than the initial control determination value V ₀ (NO in step 210), it means that the cool-down or the warm-up has ended, and in step 211, the initial control end flag is turned on. , Step 2
At 24, the blower fan motor application voltage Vfan is output to the blower fan motor
Return to

In the case of manual air volume control, step 2
At 12, the blower fan motor applied voltage Vfa selected by the occupant's operation amount of the blower fan switch 46
It is determined whether nm is equal to the blower fan motor applied voltage Vfanm one scan before the microcomputer. If the blower fan motor applied voltage Vfanm is changed during one scan of the microcomputer (YES in step 212), in step 213, the air volume switching timer is reset and set to measure the air volume switching stable elapsed time tf. If the process has not been changed (step 212 is NO), step 21
In 4, it is determined whether the air flow switching stable elapsed time tf has exceeded the set time t ₁ preset in the control device 50.

If the air flow switching stable elapsed time tf is within the set time t ₁ (NO in step 214), in step 224, the blower fan motor applied voltage Vfanm is output to the blower fan motor 20, and step 2 is performed.
Return to 03. That is, by operating the blower fan switch 46, the air volume is switched from automatic control to manual control,
Even when the blower fan motor applied voltage Vfanm is changed, by providing a predetermined grace period of the set time t ₁ , while the occupant continuously operates the blower fan switch 46 for a short time, the air flow control characteristics are immediately changed. Without correction, when the occupant operates the blower fan switch 46 to a certain value, the correction of the air volume control characteristic is executed.

Conversely, if the air flow switching stable elapsed time tf has exceeded the set time t ₁ and the operation of the blower fan switch 46 by the occupant has settled to a certain value (YES in step 214), step 215 is performed. , It is determined whether the correction end flag is on.

If the correction end flag is ON (YES in step 215), the maximum air volume switching value F is switched after the air volume is switched from automatic control to manual control.
In step 224, the blower fan motor application voltage Vfanm is output to the blower fan motor 20.
Return to 03.

Conversely, if the correction end flag is not turned on (NO in step 215), the maximum air flow switching value F or J is corrected after the air flow is switched from automatic control to manual control. In step 216, it is determined whether the initial control end flag is on. If the cool-down or the warm-up has ended since the initial control end flag has been turned on (step 216: YE
In S), the correction end flag is turned on in step 223, and the blower fan motor applied voltage Vfanm is output to the blower fan motor 20 in step 224, and the process returns to step 203.

Further, since the initial control end flag is off, if the cooling down or the warming up is in progress (NO in step 216), the fan maximum flag is turned on in step 217. To determine if If the fan maximum flag is ON (YES in step 217), step 204 is performed during cool down or warm up.
Means that the air flow switched from the automatic control to the manual control by the operation of the blower fan switch 46 in FIG. 4 has been changed from the maximum air flow to a lower air flow. move on.

Conversely, when the fan maximum flag is off (step 217 is NO), step 218 is executed.
It is determined whether or not the blower fan motor applied voltage Vfanm is at the maximum level Vmax. If the blower fan motor applied voltage Vfanm is at the maximum level Vmax (YES in step 218), during the cool-down or the warm-up, the automatic control is operated from the automatic control to the manual control by operating the blower fan switch 46 in step 204. Means that the air volume has been changed from the air volume below the maximum air volume to the maximum air volume, and the process proceeds to step 219 to correct the air volume control characteristics.

Further, the blower fan motor applied voltage Vf
When anm is not the maximum level Vmax (step 21)
8 is NO), the air volume switched from automatic control to manual control by operating the blower fan switch 46 in step 204 is equal to the maximum air volume even during the cool down or the warm up. Since it means that the air volume has been changed from the following air volume to the air volume less than the maximum air volume, the correction end flag is turned on in Step 223 without correcting the air volume control characteristics, and the blower fan motor 20 is turned on in Step 224. And outputs the blower fan motor applied voltage Vfanm, and returns to step 203.

On the other hand, in step 219, the target blowing temperature Tof is compared with the minimum air volume switching value G in the air volume control characteristic shown in step 206, to determine whether the cooling operation or the heating operation is being performed. When the target blowing temperature Tof is equal to or less than the minimum air flow rate switching value G (step 219 is YE
Since S) means that the cooling operation is being performed, the database on the cooling side in the air volume control characteristic is updated in step 220, and the first
The correction calculation of the maximum air volume switching value F is performed using the cooling-side correction calculation formula shown in the embodiment.

Conversely, when the target outlet temperature Tof is larger than the minimum air flow rate switching value G (step 219 is N
O) means that the heating operation is being performed, so in step 221, the database on the heating side in the air volume control characteristic is updated, and in step 222, the first
The correction calculation of the maximum air volume switching value J is performed using the heating-side correction calculation formula shown in the embodiment.

After the correction calculation of the maximum air volume switching value is performed in step 222, the correction end flag is turned on in step 223, and in step 224, the blower fan motor applied voltage Vfanm is applied to the blower fan motor 20. And returns to step 203.

In short, according to the second embodiment, the occupant operates the blower fan switch 46 when the air conditioner main body 1 is driven and the conditioned air is being blown into the vehicle compartment by the automatic air volume control, and the air volume is controlled. Is switched from automatic control to manual control, the operation of the blower fan switch 46 by the occupant changes the blower fan motor applied voltage Vf
anm (step 214 is YES), cooling down or warming up (step 216 is NO), and switching from the maximum air volume to a lower air volume (step 217 is YES), or When the air volume is switched from the air volume below the maximum air volume to the maximum air volume (NO in step 217 and YE in step 218)
S) In other words, the maximum air volume switching values F and J in the air volume control characteristic in the maximum air volume range are the target outlet temperatures at the time of operating the blower fan switch 46 for the latest N times according to the cooling side and the heating side. It is corrected by the weight W (Tof (i)) based on Tof. Therefore, the maximum air volume switching values F and J
Is corrected to an optimal value for the season at the time of use, the physical condition of the occupant, and the like, except during the operation of the blower fan switch 46.

Third Embodiment In the third embodiment, when the air flow is switched from automatic control to manual control, not only the correction of the air flow control characteristic in the maximum air flow area but also the correction of the air flow control characteristic in the intermediate air flow area. The feature is that correction is also performed. Therefore, the third embodiment will be described based on the flowchart shown in FIG. In the description of the third embodiment, the reference numerals given to the components of the vehicle air conditioner are based on FIG.

When the air conditioner switch 44 is turned on and the air volume control is started in step 301, step 302
In the initial setting, the fan maximum flag is turned on, the initial control end flag and the correction end flag are turned off, and in step 303, the target temperature is determined from the detected room temperature Tic, the outside air temperature Tamb, the set room temperature Tset, and the amount of solar radiation Qsun. The blowing temperature Tof is calculated.

Next, at step 304, the target blow-off temperature Tof is compared with the air volume control characteristic preset in the control device 50, and the blower fan motor applied voltage Vfa
Calculate n. At step 305, it is determined whether or not the manual control of the air volume has been selected. In other words, when the occupant operates the auto switch 45 and the automatic air volume control is selected (NO in step 305), step 30 is executed.
Proceed to 5 to perform automatic air volume control. Conversely, if the occupant operates the blower fan switch 46 and the air volume manual control is selected (YES in step 305), step 3
Proceeding to 12, the air volume manual control is performed.

That is, in the case of the automatic air volume control, the correction end flag is turned off in step 306, and if the blower fan motor applied voltage Vfan is at the maximum level Vmax (step 307 is YES),
In step 308, the fan maximum flag is turned on. If the blower fan motor applied voltage Vfan is not at the maximum level Vmax (step 307: NO), in step 309, the fan maximum flag is turned off.

Subsequently, the blower fan motor applied voltage V
When fan is higher than the initial control determination value V ₀ (step 3
Step 10 is YES), which means that cool down or warm up is in progress.
In 5, the blower fan motor application voltage Vfan is output to the blower fan motor 20, and the process returns to step 303.

Conversely, the blower fan motor applied voltage Vfa
If n is equal to or less than the initial control determination value V ₀ (NO in step 310), it means that the cool-down or the warm-up has ended, and in step 311, the initial control end flag is turned on. , Step 3
In step 25, the blower fan motor application voltage Vfan is output to the blower fan motor
Return to

In the case of manual air volume control, step 3
At 12, the blower fan motor applied voltage Vfa selected by the occupant's operation amount of the blower fan switch 46
It is determined whether nm is equal to the blower fan motor applied voltage Vfanm one scan before the microcomputer. If the blower fan motor applied voltage Vfanm is changed during one scan of the microcomputer (YES in step 312), in step 313, the air volume switching timer is reset and set to measure the air volume switching stable elapsed time tf. If the processing has not been changed (step 312 is NO), step 31
In 4, it is determined whether the air flow switching stable elapsed time tf has exceeded the set time t ₁ preset in the control device 50.

If the air flow switching stable elapsed time tf is within the set time t ₁ (NO in step 314), in step 325, the blower fan motor application voltage Vfan is output to the blower fan motor 20, and step 30
Return to 3.

Conversely, if the air flow switching stable elapsed time tf has exceeded the set time t ₁ and the operation of the blower fan switch 46 by the occupant has settled to a certain value (YES in step 314), step 315 is executed. , It is determined whether the correction end flag is on. When the correction end flag is ON (Step 315: Y
ES) means that the air flow control characteristic was corrected after the air flow was switched from the automatic control to the manual control. Therefore, in step 325, the blower fan motor applied voltage Vfanm was applied to the blower fan motor 20. Output and return to step 303.

Conversely, if the correction end flag is not turned on (NO in step 315), it is determined that the air flow control characteristic is not corrected after the air flow is switched from automatic control to manual control. Meaning, step 31
At 6, it is determined whether the initial control end flag is on. If the cool-down or warm-up has ended (YES in step 316) since the initial control end flag is on, the process proceeds to step 321 to correct the air flow control characteristic in the intermediate air flow range. move on.

Conversely, since the initial control end flag is off, if the cooling down or the warming up is in progress (NO in step 316), the fan maximum flag is turned on in step 317. To determine if If the fan maximum flag is ON (YES in step 317), the automatic control is switched from the automatic control to the manual control by operating the blower fan switch 46 in step 304 during the cool-down or the warm-up. Since this means that the flow rate has been changed from the maximum flow rate to a lower flow rate, the process proceeds to step 319 in order to correct the flow rate control characteristics in the maximum flow rate range.

Conversely, if the fan maximum flag is off (step 317 is NO), step 318
It is determined whether or not the blower fan motor applied voltage Vfanm is at the maximum level Vmax. If the blower fan motor applied voltage Vfanm is at the maximum level Vmax (YES in step 318), during the cool down or the warm-up, the automatic control is changed from the automatic control to the manual control by operating the blower fan switch 46 in step 304. Means that the air volume has been changed from the air volume lower than or equal to the maximum air volume to the maximum air volume, and the process proceeds to step 319 in order to correct the air volume control characteristics in the maximum air volume region.

Further, the blower fan motor applied voltage Vf
If anm is not the maximum level Vmax (step 31)
8 is NO), during the cool down or the warm-up, the air volume switched from the automatic control to the manual control by the operation of the blower fan switch 46 in step 204 is changed from the air volume below the maximum air volume to the maximum air volume. Since this means that the air volume has been changed to the following, the process proceeds to step 321 in order to correct the air volume control characteristics in the intermediate air volume range.

In the case of the correction of the air volume control characteristic in the maximum air volume range, in step 319, the target outlet temperature Tof is shown in step 306 as in steps 219, 220, 221, 222 of the second embodiment. If the difference is equal to or less than the minimum air volume switching value G in the air volume control characteristics, the database on the cooling side in the air volume control characteristics is updated, and the first
The correction calculation of the maximum air volume switching value F is performed by using the cooling-side correction calculation formula shown in the embodiment, and the target outlet temperature To
If f is larger than the minimum air volume switching value G, the database on the heating side in the air volume control characteristics is updated, and the maximum air volume switching value is calculated using the heating side correction calculation formula shown in the first embodiment. J correction calculation is performed. And step 3
After the correction calculation of the maximum air flow rate switching values F and G is performed in step 19, in step 320, the blower fan motor applied voltage Vfa after the past several times of switching from the database.
The average value Vm of nm is obtained. Then, the average value Vm is compared with a prescribed value Vd preset in the control device 50 to determine the air volume control characteristics between FG and HJ in the intermediate air volume range.

That is, when the average value Vm is larger than the set value Vd, the corrected and calculated maximum air volume switching value F 'and the minimum air volume switching value G are connected as shown by the solid line in FIG. Interpolates linearly like a straight line. When the average value Vm is smaller than the set value Vd, the average value Vm is changed to a straight line indicated by a solid line in parallel with the initially set air volume control characteristic indicated by a virtual line in FIG. The maximum air volume switching value is F ', and the minimum air volume switching value is G'. This means that in the case of an occupant having a high average of the air volume after switching the air volume, he does not like to sharply reduce the air volume and prefers to secure a certain air volume. Change to the air volume control characteristic shown in FIG. Conversely, in the case of an occupant whose airflow average after switching is low, unless priority is given to reduction in airflow, it means that discomfort is caused by disgust due to a high wind speed.
Change to the air volume control characteristic shown in (B). FIG.
(A) and (B) show only the correction between the intermediate air volume ranges FG on the cooling side, but the correction between the intermediate air volume ranges H and J on the heating side is changed in the same manner.

Subsequently, in step 324, the correction end flag is turned on. In step 325, the blower fan motor application voltage Vfan is output to the blower fan motor 20, and the process returns to step 303.

On the other hand, when the process proceeds to step 321, that is, when switching from automatic control to manual control without correcting the maximum air volume switching values F and G, the blower fan motor applied voltage Vfanm and the Compare the blower fan motor applied voltage Vfan at the time, and
If nm> Vfan and the air volume control characteristic is as shown in FIG. 7B, in step 322, the air volume control characteristic is corrected as shown in FIG. 7C. That is, the target blowout temperature Tof at the time when the blower fan switch 46 is operated is a straight line obtained by linearly interpolating F and G up to a certain value K, and between K and G ′, the air flow rate control characteristic of the initially set intermediate air flow rate range is obtained. Correct so as to be a straight line parallel to the straight line. Vf
FIG. 7 (A) with an anm <Vfan and the air volume control characteristic
In the case of, the air flow control characteristic is corrected in step 323 as shown in FIG. That is, the target blowing temperature Tof at the time when the air volume is switched from the automatic control to the manual control is a straight line parallel to the straight line of the air volume control characteristic of the initially set intermediate air volume region up to a certain value K, and between K-G Correction is performed so that K and G are linearly interpolated. In FIGS. 7 (C) and 7 (D), the intermediate air volume range F-
Only the correction between G is shown, but the intermediate air volume range H-
The correction between J is similarly changed. By making such corrections, it is possible to make corrections to more suitable airflow control characteristics based on the passenger's airflow preference.

After these corrections are completed, in step 324, the correction end flag is turned on, and in step 325
, The blower fan motor applied voltage Vfanm is output to the blower fan motor 20, and the process returns to step 303.

In short, according to the third embodiment, after the cooling down or the warm-up is completed, in the case of an occupant who can easily switch so as to reduce the air volume, the air volume control characteristic in the intermediate air volume range is changed to the air volume control characteristic. Is corrected to a characteristic that makes the falling of the air flow faster, and the air flow control characteristic gives priority to the falling of the air flow. In addition, when an operation of giving priority to lowering the room temperature is performed by the subsequent operation of the blower fan switch 46, according to the target blow-off temperature Tof at that time,
An area for lowering the room temperature is added to the air volume control characteristics in the intermediate air volume area. In addition, in the case of an occupant who can easily switch to increase the airflow after the end of the cool-down or the warm-up, the airflow control characteristics in the intermediate airflow range are set such that the airflow decreases gradually and the room temperature decreases. Is corrected to give priority to the characteristic. Moreover, the subsequent blower fan switch 46
When the operation of giving priority to the reduction of the air volume is performed by the operation of, the correction is made so as to add a region giving priority to the reduction of the air volume to the air volume control characteristic of the intermediate air volume region according to the target blowing temperature Tof at that time. . Therefore, it is possible to change the airflow control characteristic to one that can satisfy both the feeling of lowering the room temperature and the feeling of airflow reduction, and to correct the airflow control characteristic to match the feeling of the occupant more.

In the third embodiment, the average value Vm of the switched blower fan motor applied voltage Vfanm is used to determine the airflow control characteristics in the intermediate airflow range. However, as another example, the switched blower fan is used. Motor applied voltage Vfan
The determination may be made based on the most frequent voltage Vmod among m. That is, when the occupant most frequently reduces the air volume from the fourth speed to the third speed, it is determined that the air volume is preferred to gradually decrease, and the control characteristic is changed to the control characteristic of FIG. Also,
When the occupant most frequently reduces the air volume from the fourth speed to the first or second speed, it is determined that the air volume prefers to decrease rapidly, and the air volume control characteristic is changed to the air volume control characteristic of FIG.

The following example is also conceivable for correcting the air volume switching value in the third embodiment.

(1) In the database of the maximum air volume switching value, in addition to the target blowing temperature Tof at the time when the occupant switches the air volume from the automatic control to the manual control and the blower fan motor applied voltage Vfanm after the switching, FIG. The weight Wv determined by the characteristic shown in FIG. The weight Wv is used for averaging the load of Vfanm to determine the control characteristics of the intermediate airflow range described later. At this time, the target blowout temperature Tof is changed from the maximum airflow switching values F and G to the cooling air side. The smaller the value, the larger the value on the heating side, that is, the larger the heat load, the larger the value. By setting in this way, the degree of influence on the load average when the air flow is reduced despite the large thermal load increases. Here, the value of the weight Wv is shown in FIG.
, 1 <Wv <Wo (Tof <F, J <Tof) Wv = O (F <Tof <J)

Then, in step 320, calculation is performed by the following equation to obtain a load average value ΔVm of the drop width of the blower fan motor applied voltage Vfan, and the value of ΔVm is set to a specified value Δ
By comparing with Vd, between F-G in the middle air volume range,
The airflow control characteristics between H and J are determined.

[0099]

(Equation 3)

That is, when ΔVm is larger than ΔVd, it is determined that the blower fan motor applied voltage Vfan has a strong tendency to greatly decrease, and the air volume control characteristic shown in FIG. 7B is determined. When ΔVm is smaller than ΔVd, FIG. 7 shows that there is a tendency to give priority to lowering the room temperature without significantly reducing the blower fan motor applied voltage Vfan.
Change to the air volume control characteristic of (A). By setting in this way, the occupant who greatly reduces the air volume or starts dropping early is changed to the air volume reduction priority shown in FIG. 7B, and vice versa. Change to priority to lower the room temperature.

Although the value of K is the target outlet temperature Tof at that time, a correction may be made in consideration of the time delay of the occupant's feeling. In other words, the time when the occupant determines that he / she does not like the control sensuously is later than the time when the occupant's body is not physiologically correct, so that the air conditioning is performed by using the correction term ΔT set in consideration of this time. Tof on the side
−ΔT is K, and Tof + ΔT is K on the heating side.
By doing so, during the next automatic control,
The correction is more suitable for the thermophysiology of the occupant.

(2) The average value TMc and the standard deviation σc of the target outlet temperature Tof (i) at the time when the occupant switches the air volume from the automatic control to the manual control are obtained. That is,

[0103]

(Equation 4)

[0104]

(Equation 5)

Then, the maximum air volume switching value is corrected by the following equation.

Fnew = Fold−W (TMc, σc)
・ (Fold-TMc) (However, Fnew is the maximum air volume switching value after updating, Fo
ld indicates the maximum air volume switching value before updating) where W (TMc, σc) is a weight having the average value TMc and the standard deviation σc as functions, and has the characteristics shown in FIG.
It has the form of a nearly normal distribution function with Fold as the average,
The size changes according to the standard deviation σc, and is set so as to decrease as the standard deviation σc increases. This makes it possible to distinguish between a case where the switching operation from the automatic control of the air volume to the manual control is performed over a wide thermal environment region and a case where the switching operation is performed over a narrow thermal environment region.
That is, when the occupant performs the switching operation from the automatic control of the air flow to the manual control over a wide range, the error of the sensation of the occupant to the thermal environment is large, and it is determined that the occupant cannot perform the proper operation. , Σc), the maximum air flow rate switching value F is not significantly corrected.

Note that the TMc, σc, F
new and Fold are TMw, σw, Jnew,
The same correction is performed by substituting Jold. (3) Average value TMc of target outlet temperature Tof (i) at the time when the occupant switches the air volume from the automatic control to the manual control.
And the median Tmedc. And the average value TM
The average value TMc is corrected according to the difference TMc−Tmedc between c and the median value Tmedc, and the corrected average value TMc ′ obtained by TMc ′ = TMc−K1 · (TMc−Tmedc) (where Kl is a constant) is used. Fnew = Fold-W (TMc '). (Fold-T
Mc ') (where Fnew is the maximum air volume switching value after updating, Fo
ld indicates the maximum air volume switching value before updating), thereby correcting the maximum air volume switching value F. Where W
(TMc ') is a weight having TMc' as a function.
0, as shown in FIG.
It has a substantially normal distribution shape with d as the average value. That is,
Even in the case of an occupant having a bias in the distribution of the switching operation from the automatic control of the air volume to the manual control, the average value is corrected in consideration of the deviation of the median value Tmedc from the average value TMc. The environment in which there is a higher possibility of performing the switching operation from the control to the manual control is used as a parameter for correcting the maximum air volume switching value F. Note that instead of the constant Kl, T
A variable corresponding to the value of Mc-Tmedc may be used. Also on the heating side in this case, TMc ', TMc, Tmedc,
Fnew, Fold, W (TMc ') is replaced with TMw', TM
w, Tmedw, Jnew, Jold, W (TMw ')
, The same correction is performed.

Fourth Embodiment In the fourth embodiment, after the maximum air flow switching value is corrected, the elapsed time after the completion of the correction, the operation amount for manual control switching of the air flow, the elapsed time from the start of use of the air conditioning control, and the like. , The degree of satisfaction of the occupant with respect to the control characteristic is calculated, and the variance of the weight for the normal distribution function is set in an inversely proportional relationship according to the degree of satisfaction. Therefore, the fourth embodiment will be described with reference to the flowcharts shown in FIGS. Note that this fourth
Also in the description of the embodiment, the reference numerals given to the respective component parts as the automotive air conditioner are based on FIG.

When the air conditioner switch 44 is turned on and the air volume control is started in Step 401, Step 402
, As the initial setting, the fan maximum flag is turned on, the initial control end flag and the correction end flag are turned off, and the timer is reset / set. More specifically, the air conditioner use timer is reset and set to use time tu.
The timer of the air flow control characteristic is maintained, and the air flow control characteristic maintenance timer is reset and set to the current air flow control characteristic maintenance time tcont.
Start timing.

Subsequently, in step 403, the target blowing temperature Tof is calculated from the detected room temperature Tic, the outside temperature Tamb, the set room temperature Tset, and the solar radiation Qsun, and in step 404, it is determined whether or not the air volume manual control is selected. . In other words, the occupant switches the auto switch 45
Is operated and if the automatic air flow control is selected (NO in step 404), the process proceeds to step 405 to perform the automatic air flow control. Conversely, when the occupant operates the blower fan switch 46,
Is operated and if manual air volume control is selected (YES in step 404), the process proceeds to step 412 to perform manual air volume control.

That is, in the case of the air volume automatic control, the correction end flag is turned off in step 405, and in step 406, the target outlet temperature Tof is compared with the air volume control characteristic preset in the control device 50, and the blower The fan motor applied voltage Vfan is calculated. And
Blower fan motor applied voltage Vfan is at maximum level Vm
ax (YES in step 407), in step 408, the fan maximum flag is turned on,
Blower fan motor applied voltage Vfan is at maximum level Vm
If it is not ax (NO in step 407), in step 409, the fan maximum flag is turned off.
Subsequently, when the blower fan motor applied voltage Vfan is higher than the initial control determination value V ₀ (step 410 YE
Since S) means that the cooling down or warming up is being performed, in step 427, the blower fan motor applied voltage Vfan is output to the blower fan motor 20, and the process returns to step 403.

Conversely, the blower fan motor applied voltage Vfa
If n is equal to or smaller than the initial control determination value V ₀ (NO in step 410), it means that the cool-down or the warm-up has ended, and in step 411, the initial control end flag is turned on. , Step 4
At 27, the blower fan motor application voltage Vfan is output to the blower fan motor 20, and the process returns to step 403.

In the case of manual air volume control, step 4
At 12, the blower fan motor applied voltage Vfa selected by the occupant's operation amount of the blower fan switch 46
It is determined whether nm is equal to the blower fan motor applied voltage Vfanm one scan before the microcomputer. If the blower fan motor applied voltage Vfanm is changed during one scan of the microcomputer (YES in step 412), in step 413, the air volume switching timer is reset and set to measure the air volume switching stable elapsed time tf. If the process has not been changed (step 412 is NO), step 41
In 4, it is determined whether the air flow switching stable elapsed time tf has exceeded the set time t ₁ preset in the control device 50.

If the air flow switching stable elapsed time tf is within the set time t ₁ (NO in step 414), it means that the occupant has operated the blower fan switch 46 continuously for a short time. Is corrected, the blower fan motor applied voltage Vfanm is output to the blower fan motor 20 in step 427, and the process returns to step 403.

Conversely, if the air flow switching stabilization elapsed time tf has exceeded the set time t ₁ and the operation of the blower fan switch 46 by the occupant has settled to a certain value (YES in step 414), step 415 is performed. , It is determined whether the correction end flag is on.

If the correction end flag is ON (YES in step 415), after the air flow is switched from automatic control to manual control, the maximum air flow switching value F
In step 427, the blower fan motor application voltage Vfanm is output to the blower fan motor 20.
Return to 03.

Conversely, if the correction end flag is not turned on (NO in step 415), the maximum air flow switching value F or J is corrected after the air flow is switched from automatic control to manual control. In step 416, it is determined whether the initial control end flag is on. When the cool-down or the warm-up has been completed because the initial control end flag has been turned on (step 416: YE
In step S423, the correction end flag is turned on in step 423. In step 427, the blower fan motor application voltage Vfanm is output to the blower fan motor 20, and the process returns to step 403.

Further, since the initial control end flag is off, if the fan is cooling down or warming up (NO in step 416), the fan maximum flag is turned on in step 417. To determine if If the fan maximum flag is ON (YES in step 417), the process proceeds to step 404 during cool down or warm up.
Means that the air volume switched from the automatic control to the manual control by the operation of the blower fan switch 46 in the step is changed from the maximum air volume to the air volume smaller than the maximum air volume. move on.

Conversely, if the fan maximum flag is off (step 417 is NO), step 418
It is determined whether or not the blower fan motor applied voltage Vfanm is at the maximum level Vmax. Blower fan motor applied voltage V selected by blower fan switch 46
If fanm is the maximum level Vmax (step 4
18 is YES), during the cool-down or the warm-up, the air volume switched from the automatic control to the manual control by the operation of the blower fan switch 46 in step 404 is changed from the air volume below the maximum air volume to the maximum air volume. Therefore, the process proceeds to step 419 in order to correct the air volume control characteristics.

Further, the blower fan motor applied voltage Vf
When anm is not the maximum level Vmax (step 41)
8 is NO), the air volume switched from the automatic control to the manual control by the operation of the blower fan switch 46 in step 404 becomes the maximum air volume even during the cool down or the warm up. Since it means that the air volume has been changed from the following air volume to the air volume less than the maximum air volume, the correction end flag is turned on in step 426 without correcting the air volume control characteristics, and the blower fan motor 20 is turned on in step 427. And outputs the blower fan motor applied voltage Vfanm, and returns to step 403.

On the other hand, in step 419, the target blowing temperature Tof is compared with the minimum air flow switching value G in the air flow control characteristic shown in step 406 to determine whether the cooling operation or the heating operation is being performed. When the target blowing temperature Tof is equal to or less than the minimum air flow rate switching value G (step 419 is YE
Since S) means that the cooling operation is being performed, in step 420, the database on the cooling side in the air volume control characteristic is updated. Conversely, when the target outlet temperature Tof is larger than the minimum air flow switching value G (step 41)
(No in 9) means that the heating operation is being performed, so in step 421, the database on the heating side in the air volume control characteristic is updated.

That is, in step 422, the occupant's satisfaction Vsat with respect to the current air volume control characteristic is calculated by the following satisfaction formula: Vsat = Ktcont + Ltuse + M.multidot.F-
Tof |... (However, when Tof <G) Vsat = Ktcont + Ltuse + M.
Tof |... (However, Tof> G) (K, L, M: constant). However, the degree of satisfaction Vsat is calculated based on the air volume control characteristic maintaining time tcont and the air conditioning control device usage time tus.
The larger the value of e, the larger | F-Tof | or | J-T
constants K, L, M so that the smaller
Is determined.

Then, in step 423, according to the obtained degree of satisfaction Vsat, the maximum air volume switching value F,
The standard deviations σc and σw of the weight W function for correction of J are shown in FIG.
Is determined by the relationship That is, the larger the satisfaction level Vsat, the smaller the values of the standard deviations σc and σw.

Here, the air volume control characteristic maintaining time tcont
Is large, it can be determined that the occupant has not performed an operation to correct the air volume control characteristics during that time and is satisfied with the current air volume control characteristics.

The usage time “tuse” indicates the total usage time from when the air conditioner is started to be used until the present time when the air conditioner switch 44 is turned on. The meaning of the operation of the occupant immediately after the start of use and the operation of the occupant after the use time has elapsed are different from the viewpoint of the occupant satisfaction Vsat. That is, in the operation immediately after the start of use, the difference between the air volume control characteristic and the occupant's preference can be considered to be the largest, and the occupant wants to approach his or her favorite air volume control characteristic as soon as possible. Then, the correction width is increased, and on the other hand, since the air volume control characteristic does not greatly deviate from the occupant's preference in the operation after the use time “tuse” has elapsed, the satisfaction degree Vsat is increased and the correction width is reduced. doing.

Furthermore, the occupant blower fan switch 46
Large | F-Tof | or | J-Tof | means that the occupant is not satisfied with the current airflow control characteristics, and | F-Tof | or |
It can be determined that the larger the J-Tof |, the smaller the satisfaction level Vsat.

The form of the function of the weight for the correction width in this correction operation is as shown in FIG. That is, W (Tof (i)) has a substantially normal distribution shape in which Tof = F and J are average values, and the standard deviations of the heating side and the cooling side are σc and σw, respectively. Then, according to the degree of satisfaction Vsat of the occupant with respect to the current air volume control characteristic,
When the standard deviations σc and σw are different and the degree of satisfaction Vsat is high, the standard deviations σc and σw are small, and the correction width of the maximum air volume switching values F and J is small.

After the correction calculation of the maximum air volume switching value is performed in step 423, in step 424, the cooling-side correction calculation formula (Equation 1) shown in the first embodiment is used.
Alternatively, the correction calculation of the maximum air volume switching values F and J is performed using the heating-side correction calculation formula (Equation 2). This correction calculation result is updated to a database on the cooling or heating side.

Subsequently, in step 425, the air flow control characteristic maintaining timer is reset and set to start measuring the air flow control characteristic maintaining time tcont.
In step 42, the correction end flag is turned on, and
At 7, the blower fan motor applied voltage Vfanm is output to the blower fan motor 20, and the process returns to step 403.

In short, according to the fourth embodiment, when the air conditioner body 1 is driven and the conditioned air is being blown into the vehicle interior by the automatic air volume control, the occupant operates the blower fan switch 46 to change the air volume. Is switched from automatic control to manual control, the operation of the blower fan switch 46 by the occupant changes the blower fan motor applied voltage Vf
anm (step 414: YES), during cooling down or warming up (step 416: NO), and switching from the maximum air volume to a lower air volume (step 417: YES), or When the air volume is switched from the air volume below the maximum air volume to the maximum air volume (step 417 is NO, and step 418 is YE
S) In other words, the maximum air volume switching values F and J in the air volume control characteristic in the maximum air volume range are the target outlet temperatures at the time of operating the blower fan switch 46 for the latest N times according to the cooling side and the heating side. It is corrected by the weight W (Tof (i)) based on Tof. In addition, the maximum air volume switching value F,
After the correction of J, the airflow control characteristic maintaining time tcon
t, operation change width of blower fan switch 46 | F-To
The occupant satisfaction Vsat with respect to the air volume control characteristics is calculated from f | or | J-Tof |, the elapsed time tuse from the start of use of the air conditioner, and the like, and the variance of the weight W for the normal distribution function is calculated in accordance with the satisfaction Vsat. Set in inverse proportion. Therefore, the maximum air volume switching values F and J are corrected to optimal values that always reflect the season at the time of use and the sensation of the occupant's temperature, except during the operation of the blower fan switch 46.

The satisfaction level Vs in the fourth embodiment is shown.
Another example of how to obtain at will be described.

First, in the fourth embodiment, the usage time tuse,
Although a timer was used as the air volume control characteristic maintaining time tcont, these were used, respectively, a usage frequency counter Cuse for counting the number of times of use since the start of use, and an air volume control characteristic maintenance for counting the number of times of use since the current air volume control characteristic was obtained. Using a counter Ccont, Vsat = K · Ccont + L · Case + M · | F−
Tof | (Tof <G) Vsat = K · Ccont + L · Case + M · | J−
Tof | (Tof> G) (K, L, M: constant). In this case, as in the fourth embodiment, the constants K and L become larger as the control characteristic maintenance counter Ccont and the use counter Cuse are larger, and are larger as | F-Tof | or | J-Tof | is smaller. , M are determined. The use of a counter eliminates the need for a timer for time measurement, and can be realized at low cost.

Next, in the fourth embodiment, the use time timer tu is set.
se, control characteristic maintaining time timer tcont, operation change width of blower fan switch 46 | F-Tof | or | J
Although the satisfaction degree Vsat is calculated as a linear combination using the parameters of −Tof | as independent variables, it may be used as a dependent variable as shown in the following equation.

Vsat = M (tuse, tcont) /
| F-Tof | (provided that Tof <G) Vsat = M (tuse, tcont) / | J-Tof
(Where Tof> G) Here, M (tuse, tcont) is used time tu
1 according to the air flow control characteristic maintaining time tcont.
The characteristics shown in FIG. That is, M (tuse,
tcont) is the airflow control characteristic maintaining time tcont
Is set to be larger as the value of “use” is larger and the value of the use time “tuse” is larger. Thus, M (tuse,
t-cont), the operation change width | F-To of the blower fan switch 46 depending on the magnitude of the airflow control characteristic maintaining time tcont and the use time Tuse
The degree of influence of f | or | J-Tof | on the airflow control characteristic correction width can be changed. That is, in the period shortly after the start of use of the air conditioner, the difference between the occupant's preference and the air volume control characteristic is large, so that the operation change width | F-Tof | or | J-Tof | of the blower fan switch 46 is small. It is desirable that the correction be large even if the
Even if F-Tof | or | J-Tof | is M (tuse,
By setting the value of (tcont) small, the degree of satisfaction Vsat decreases, and the correction range of the air volume control characteristic can be increased.

Furthermore, in addition to the parameters used in the fourth embodiment, the history of the operation change width | F-Tof | or | J-Tof | ΔTmf or ΔTmj may be used. That is, Vsat = M (tuse, tcont) · N (ΔTm
f) / | F-Tof | (where Tof <G) Vsat = M (tuse, tcont) · N (ΔTm
j) / | J-Tof | (where Tof> G), the satisfaction level Vsat is calculated. And N (t
Use, tcont) is set such that the smaller the value of ΔTmf or Tmj, the greater the satisfaction level Vsat. In other words, a small value of ΔTmf or ΔTmj means that the occupant is satisfied with the current air volume control characteristics,
Operation change width of blower fan switch 46 | F-Tof |
Alternatively, since | J-Tof | can be regarded as small, it can be determined that the degree of satisfaction Vsat is large. Therefore, ΔTmf
Alternatively, the smaller the ΔTmj, the smaller the correction width of the air volume control characteristic is set. Here, the average value is used as the representative value of the history of the operation change width | F-Tof | or | J-Tof | of the blower fan switch 46. However, a statistical representative value having the same meaning is not limited thereto. For example, a median value or a mode value may be used.

In the above-described embodiment, the normal distribution function is used as a function for correcting the maximum air volume switching value F. If it is a distribution, it can be used.

[0137]

As described above, according to the first aspect, in the state where the conditioned air is being blown out by the automatic air volume control,
Each time the air volume is switched from automatic control to manual control,
Since the maximum air volume switching value of the air volume control characteristic is corrected according to the air volume change information that is the target air conditioning condition at the time of the switching,
The air volume at the time of the automatic control can be made suitable for the occupant airflow. In addition, the maximum air volume switching value of the air volume control
In the correction, take in the latest several air volume change information
Switching operation that is different from the normal
The influence of the crop can be reduced.

[0138]

According to the second aspect of the present invention, the correction of the maximum air flow switching value of the air flow control characteristic incorporates the establishment and deviation from the past correction, so that more stable correction can be performed.

According to the third aspect of the present invention, the degree of occupant satisfaction with the control characteristics is calculated from the elapsed time after the end of the correction, the amount of manual control switching of the air volume, the elapsed time from the start of the air conditioning control, and the like. Since the variance of the weights with respect to the normal distribution function is set in inverse proportion according to the degree of satisfaction, the correction accuracy of the maximum airflow switching value can be improved.

According to the fourth aspect of the present invention, the air volume is changed from automatic control to manual control in the maximum air volume range according to the air volume change information.
Since the air volume control characteristic in the intermediate air volume range is corrected, in the intermediate air volume range at the time of the automatic control, it is possible to achieve both the occupant's preference for reducing the air volume and the reduction of the time required to reach the set room temperature of the vehicle room temperature.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of the present invention.

FIG. 2 is a configuration diagram showing the entire first embodiment.

FIG. 3 is a flowchart of the first embodiment.

FIG. 4 is a characteristic diagram showing correction weights according to the first embodiment.

FIG. 5 is a flowchart of a second embodiment.

FIG. 6 is a flowchart of the third embodiment.

FIG. 7 is a characteristic diagram showing air volume control characteristics of a third embodiment.

FIG. 8 is a characteristic diagram showing weights for correction according to the third embodiment.

FIG. 9 is a characteristic diagram showing correction weights of an example different from the third embodiment.

FIG. 10 is a characteristic diagram showing another correction weight according to the third embodiment.

FIG. 11 is a flowchart of the fourth embodiment.

FIG. 12 is a flowchart of the fourth embodiment.

FIG. 13 is a characteristic diagram showing correction weights according to the fourth embodiment.

FIG. 14 is a characteristic diagram showing a standard deviation with respect to satisfaction in the fourth embodiment.

FIG. 15 is a characteristic diagram showing M (tcont, use) with respect to the airflow control characteristic maintaining time in a different example of the fourth embodiment.

FIG. 16 is a characteristic diagram showing air volume control characteristics of a conventional example.

[Explanation of symbols]

 a ... Thermal environment information input means b ... Blower means c ... Air volume control means (control device) d, 49 ... Air volume control selection means e ... Air volume change information storage means f ... Air volume control characteristic correction means 1. Air conditioner main body 2. Blower Fan 44 ... Auto switch 45 ... Blower fan switch 50 ... Control device

────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hiroaki Sasaki 2 Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Prefecture Nissan Motor Co., Ltd. (56) References JP-A-3-54015 (JP, A) (58) Survey Field (Int. Cl. ⁶ , DB name) B60H 1/00 101

Claims (4)

(57) [Claims] 1. A target air conditioning condition is calculated based on thermal environment information inside and outside a vehicle such as a detected room temperature, an outside air temperature, an amount of solar radiation, and a set room temperature input from a thermal environment information detecting means. A vehicle air conditioner equipped with automatic air flow control means that drives the air blowing means of the air conditioner main body to air the passenger compartment so that the target air conditioning condition is achieved. Air flow control selecting means that can select whether to perform manual control or manual air flow control, and switching from automatic control to manual control of the air flow control selecting means to change the air flow from the maximum air flow to a lower air flow, or Air volume change information storage means for storing target air conditioning conditions when the air volume is changed from the following air volume to the maximum air volume as air volume change information , and always storing the latest several air volume change information; According to the air volume change information from the storage unit, the maximum air volume switching value such as the switching value of the air volume automatic control unit from the maximum air volume to the lower air volume or the switching value from the air volume below the maximum air volume to the maximum air volume. An air conditioner for a vehicle, comprising: an air flow control characteristic correction unit that corrects the air flow. 2. A method according to claim 1, wherein said air flow rate control characteristic correction means uses a target air conditioning condition calculated from said thermal environment information as a variable for each air flow rate change information stored in said air flow rate change information storage means, Calculates weights of individual air volume change information by a substantially normal distribution function using the maximum air volume change value as an average value, and a correction term calculated from this weight and a deviation between the individual air volume change information and the maximum air volume change value. The vehicle air conditioner according to claim 1, further comprising means for correcting the maximum air flow switching value. 3. The occupant satisfaction with the air volume control characteristic is calculated by the air volume control characteristic correction means from the elapsed time after the correction is completed, the operation amount of manual control switching of the air volume, the elapsed time from the start of use of the air conditioning control, and the like. 3. The vehicle air conditioner according to claim 2 , further comprising means for setting the variance of the weights with respect to the normal distribution function in an inversely proportional relationship according to the degree of satisfaction. 4. The air volume control characteristic correction means includes means for changing the air volume control characteristics in the intermediate air volume range from the corrected maximum air volume switching value to the minimum air volume switching value from automatic control of the air volume in the intermediate air volume range to manual control. Depending on the switching state, it is determined whether to make it substantially parallel to the initially set airflow control characteristic or to perform linear interpolation between the corrected maximum airflow switching value and the initially set stable airflow switching value to make correction. The vehicle air conditioner according to claim 1, further comprising means.