JPH0288320A - Compensation control device by distribution of air quantity of automatic air condition - Google Patents

Abstract

PURPOSE:To execute control instantaneously corresponding to the conditions of a thermal environment in a vehicle by providing a computing control device with a blowout temperature computing circuit for weighting a value detected by each blowout temperature sensor corresponding to the air quantity distribution for a subject blowout port and applying the weighted valve for computation of a blowout temperature. CONSTITUTION:A blowout temperature computing circuit 60 weight values detected by blowout temperature sensors 23, 24, 25 corresponding to the air quantity distribution for subject blowout port, and applies the weighted values for computation of a blowout temperature. The blowout air temperature is thus controlled using the values applied for the blowout air temperature at the subject blowout ports corresponding to the air quantity distribution and detected at a good precision at a larger ratio. An air mix door for an operating element relating to the blowout temperature can thus be driven continuously as necessary for a predetermined period without being fixed. Proper control of blowout air is thus possible continuously, and a comfortable space can be formed constantly instantaneously corresponding to the conditions of a thermal environment in a vehicle which changes every minute.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to correction based on the air volume distribution of an automatic air conditioner for a vehicle, which performs control using a value weighted according to the air volume distribution of the air outlet provided in the main body of the air conditioner. Regarding a control device.

Conventional technology Conventionally, as an automatic air conditioner installed in a vehicle, the fourth
The structure shown in the figure is in practical use (September 1982).
"NISSAN Service Bulletin" published by Nissan Motor Co., Ltd., No. 489, pages V-75-80, Iwateru). That is, the air conditioner main body 1 is configured by connecting a proa unit 2, a cooling unit 3, and a heater unit 4. The proa unit 2 includes an outside air intake port 5, an inside air intake port 6,
An intake door 7 for opening and closing both intake ports 5 and 6 and a proa fan 8 are provided, and an evaporator 9 is provided within the cooling unit 3. Also, inside the heater unit 4, there are air mix doors 11, 12, .
13, and the peripheral wall of the heater unit 4 is provided with a defrost outlet 14. A defrost duct 17, a ventilator duct 18, and a foot duct 19 are provided which communicate with the ventilator outlet 15 and the foot outlet 16.

A defrost door 20, a ventilator door 21, and a foot door 22 are pivotally supported at the base end of each duct 17, 18, 19, and a defrost air temperature sensor 23. Vent outlet temperature sensor 24. A foot blow-out smear sensor 25 is provided. The outlet temperature sensor 23
, 24, 25 are connected to the input section of the control unit 26 together with other temperature sensors (not shown) such as a solar radiation sensor, and the output section of the control unit 26 includes the intake door 7, air mix door 11, 12, etc.
．． 13, defrost door 20, ventilator door 21,
Actuator that drives the foot door 22 individually (not shown)
It is connected to the.

In this structure, the control unit 26 performs calculations to create an optimal environment in the vehicle interior based on the output signals of the respective outlet temperature sensors 23, 24, 25, etc., and sends command signals to the actuator based on the calculation results. Send out.

Then, the actuator opens the air mix door 11.
, 12.13 are set to control the outlet air temperature, and the defrost door 20, ventilator door 21,
The foot door 22 is driven to open and close as appropriate, for example, in a HEAT mode in which the defrost outlet 14 and the foot outlet 16 are opened and the ventilator outlet 15 is closed, and the ventilator outlet 15 and the foot outlet 16 are opened. And B/L to close defrost outlet 14 (pie level)
A mode etc. is selected. And defrost outlet 14
The hot air blown out from the bench lake outlet 15 is controlled by the air mix door 11, and the hot air blown out from the foot outlet is controlled by the air mix door 12.13.

Problems to be Solved by the Invention However, in such conventional devices, the HE
When the AT mode is selected, since no air flows through the ventilator outlet 15, the vent outlet temperature sensor 24 in the ventilator outlet 15 detects the temperature inside the vehicle, which is much lower than the outlet air temperature. It is in a state of adaptation to the temperature.

Therefore, when switching from the HEAT mode to the B/L mode, the vent outlet temperature sensor 24 does not instantaneously respond to the outlet temperature in the ventilator outlet 15, and until it is heated by the outlet temperature, The lower vehicle interior temperature in the adapted state continues to be output to the control unit 26.

As a result, the control unit 26 calculates the lower temperature inside the vehicle as the outlet temperature in the ventilator outlet 15, and sets the outlet temperature to a higher temperature necessary to create an optimal environment. 12. Execute control to increase the opening degree of 13. Therefore, hot air is blown out from the ventilator outlet 15 until the vent outlet temperature sensor 24 adapts to the outlet island and detects the actual outlet temperature, and the hot air causes discomfort to the occupant's head. There was a risk that this would occur.

For this reason, as disclosed in Japanese Patent Application Laid-Open No. 199518/1983, when transitioning from the blowout mode in which the ventilator outlet 15 is closed to the blowout mode in which the ventilator outlet 15 is opened, the air mix door 11, 12, 13 is closed. A device that is fixed for a predetermined period of time to prevent hot air from being blown out has also been proposed.

However, in such a device, since the air mix door 11, 12, 13 does not operate for a predetermined period of time after the blowout mode is shifted, it is impossible to control the temperature of the blowout air during this period, and therefore the temperature of the blowout air changes from moment to moment. It has not been possible to permanently create a comfortable space that responds immediately to the thermal environment conditions inside the vehicle interior.

The present invention has been made in view of such conventional problems, and an object of the present invention is to eliminate the blowout temperature control error caused by the response delay of the blowout temperature sensor, and to execute control that immediately responds to the thermal environment conditions in the vehicle interior. The purpose of the present invention is to provide a correction control device based on air volume distribution for an automatic air conditioner that makes it possible to do so.

Means for Solving the Problems In order to solve the above problems, the present invention provides a vent outlet temperature sensor and a defrost outlet temperature sensor respectively disposed at the ventilator outlet and the defrost outlet provided in the main body of the air conditioner. a drive device that drives an operating element related to the air volume distribution of the outlet and an operating element related to the air outlet temperature; In the auto air conditioner, the automatic air conditioner is equipped with a calculation control device that calculates a blowout temperature using the detected actual blowout temperature and a pre-calculated target blowout temperature, and sends a command signal to the drive device based on the calculation result. The arithmetic and control unit weights the values detected by each outlet temperature sensor between 0% and 100% according to the air volume distribution of the outlet, and the outlet temperature calculation circuit uses this weighted value to calculate the outlet temperature. is provided.

Further, the arithmetic and control device calculates and corrects the applied voltage of the blower motor provided in the air conditioner main body according to the amount of solar radiation, and sets the correction rate to 0% (0%) according to the air volume distribution.
An air volume calculation circuit is provided which calculates the applied voltage using the weighted correction factor.

Effect In the above configuration, when air volume distribution is performed in which air is blown only from the ventilator outlet, the weighting for the value detected by the vent outlet temperature sensor disposed at the ventilator outlet is 100%. , on the other hand, the weighting for the value detected by the differential air temperature sensor is 0.
%. Therefore, the value detected by the defrost outlet temperature sensor, which is not adapted to the outlet temperature, is not used, but the value detected by the vent outlet temperature sensor is used as it is to calculate the outlet temperature.

At this time, the vent outlet temperature sensor is adapted to the outlet temperature due to sufficient air flow distribution and is detecting the outlet temperature with high accuracy. Therefore, by using only the value of the vent outlet temperature sensor, it is possible to This makes it possible to control the outlet temperature.

Then, air is also blown from the defrost outlet, and when the air volume distribution of the defrost outlet increases and the air volume distribution of the ventilator outlet relatively decreases, the value detected by the defrost outlet temperature sensor and the vent outlet temperature sensor A value obtained by combining the values detected by the air outlet and the air flow rate at a rate corresponding to the air volume distribution of each outlet is used to calculate the outlet temperature. Therefore, even if the defrost air temperature sensor installed at the defrost air outlet where the air is blown later has not yet adapted to the air outlet temperature and has a detection error, by using the composite value, the detection error can be reduced. will be corrected. Furthermore, if air volume distribution is executed in which the ventilator outlet is closed and air is blown only from the defrost outlet, weighting is applied to the value detected by the defrost outlet temperature sensor installed at the defrost outlet. is 100%, and on the other hand, the weighting for the value detected by the vent outlet temperature sensor is 0%.

Therefore, the value detected by the vent outlet temperature sensor that is not adapted to the outlet temperature is not used, and the value detected by the differential outlet temperature sensor is used as it is to calculate the outlet temperature.

At this time, the differential air temperature sensor is adapted to the air outlet temperature due to sufficient air flow distribution and is detecting the air outlet temperature with high accuracy. Therefore, by using only the value of the differential air outlet temperature sensor, it is possible to This makes it possible to control the outlet temperature.

Furthermore, when correcting the voltage applied to the blower motor using solar radiation, if air volume distribution is being performed with air being blown out from the ventilator outlet, air conditioning is performed exclusively to lower the temperature inside the vehicle. ing. therefore,
For example, using 100% of the value detected by the solar radiation sensor,
Correct the applied voltage. As a result, the blower motor is controlled in consideration of the influence of solar radiation, and the interior of the vehicle can be cooled against solar radiation.

Then, air is also blown out from the defrost outlet, and the air volume distribution of the defrost outlet increases.As a result, when the air volume distribution of the ventilator outlet relatively decreases, air is blown out from the ventilator outlet into the passenger compartment. The need for cooling may also be reduced in accordance with the air volume distribution. Therefore, when correcting the applied voltage using the value detected by the solar radiation sensor, the correction rate is gradually decreased between 100 and 0%.

Furthermore, if the ventilator outlet is closed and the air volume distribution is performed by blowing out from the defrost outlet, there is no need to cool the passenger compartment, and the heat generated by solar radiation inside the passenger compartment. There is no need to consider the effects of radiation.Therefore, the applied voltage is controlled with a correction factor of 0%, that is, without correction for solar radiation.

EXAMPLE An example of the present invention will be described below with reference to the drawings. That is, as shown in FIG. 2, the arithmetic and control unit 44 receives the output signal TS of the room temperature setting section 45 and the detection values Ta and Z of the outside air sensor 46 and the solar radiation sensor 47, which are predetermined physical environmental factors. Function f (Ta, Z, Ts) as variable
Based on this, the air volume distribution of the ventilator, defrost, and foot outlets 15, 14, and 16 provided in the air conditioner body 1 as outlined in FIG. A distribution calculation circuit 48 is provided. On the output side of the drive circuit 47, there is a ventilator door actuator 49 as a drive device linked to the ventilator, defrost, and foot doors 21.2022, which are elements related to air volume distribution. Defrost door actuator 50. A foot door actuator 51 is provided. Further, the arithmetic and control device 44 is provided with a target room temperature calculation circuit 53 that calculates a target room temperature Tso based on the set room temperature Ts, the outside temperature Ta, and the amount of solar radiation Z, and the target room temperature ax Tso and the lower room temperature sensor 58 and the lower chamber mTQ detected by the upper room temperature sensor 54
, the upper room temperature Tu are input to an air volume calculation circuit 55.

As shown in FIG. 3, the air volume calculation circuit 55
=Tso-Tr (here, &T' is one of the values of T12 and Tu, or the average value of both, as described later), and a function of calculating the applied voltage Vi (V) of the blower motor 73; It has a function of correcting the applied voltages v and L according to the amount of solar radiation 2, and a drive circuit 57 that supplies the applied voltage VM to the blower motor 73 is provided on its output side.

Further, the arithmetic and control unit 44 calculates the vent target blowout temperature 7'do from the target room 71iTso, the solar radiation IZ, and the room temperature Tr.
A target outlet temperature calculation circuit 56 is provided which calculates u and a differential target outlet temperature Tdod.
A discharge temperature calculation circuit 60 is provided on the output side.

On the other hand, the vent outlet temperature Tdu detected by the vent outlet temperature sensor 24 disposed at the ventilator outlet 15 and the differential outlet temperature sensor 23 disposed at the defrost outlet 14
The differential air outlet temperature Tdd detected by the above-mentioned target air outlet temperature T
Dou, Tdod, and the calculation results of the air volume distribution calculation circuit 48 are input to the blowout temperature calculation circuit 60Il.

The outlet temperature calculation circuit 60 calculates the Tdu and Tdo.
A function of calculating the temperature difference between Tdd and Tdod, weighting this temperature difference according to the air volume distribution, and outputting a command signal according to the weighted temperature difference to the drive circuit 59. function, and the drive circuit 59
An air mix door actuator 61 is connected to the output boat as a driving device linked to an air mix door, which is an operating element related to the blowout temperature.

Next, regarding the operation of this embodiment configured as above,
This will be explained by dividing into regions J, β, and γ shown in FIG. 1(A).

That is, when the air conditioning switch (not shown) is turned on, the arithmetic and control unit 44 is activated, and the outside air m Ta and the solar radiation ff1Z are
.

Upper and lower chambers! 'ru, 'rg, vent blowout m T d u
, the differential air temperature Tdd is read. Then, the air volume distribution calculation circuit 48 adjusts the defrost outlet 14. Foot outlet 16. Air volume distribution of the ventilator outlet I5 and actuators for the ventilator door, defrost door, and foot door according to the air volume distribution 49.50.5
1 angle (mode actuator angle). This calculation result is output to each of the actuators 49, 50, 51 via the drive circuit 47, and
．． The air volume distribution is achieved by setting each door 17.2122 linked to the door 50.51 to the opening degree described above.

At this time, the ventilator outlet 15 and the foot outlet I6
Therefore, in the region α where air is blown with the illustrated air volume distribution, the vent air temperature Tdu detected by the vent air temperature sensor 24 disposed at the ventilator outlet 15 is
, and the weighting for the vent target airflow 7iTdou calculated by the target airflow temperature calculation circuit 56 is set to 100%, while the differential airflow 1Td detected by the differential airflow temperature sensor 63 is weighted to 100%.
d.

And the weighting for the differential target blowout 1Tdod is set to 0% [FIG. 1(b)].

Therefore, the value detected by the differential outlet temperature sensor 23, which is not adapted to the outlet temperature, is not used, but the value detected by the vent outlet temperature sensor 24 is used to calculate the outlet temperature.

At this time, the vent outlet temperature sensor 24 is in a state adapted to the outlet temperature due to sufficient air volume distribution and is detecting the outlet temperature with high accuracy. Therefore, the value of the vent outlet 1 sensor 24 and the vent target outlet 1Tdou By using this, appropriate blowout temperature control becomes possible.

On the other hand, when correcting the voltage applied to the blower motor 73 using solar radiation, in the region α, the ventilator outlet 15 and the foot outlet 16 are opened simultaneously, and the purpose is to reduce the temperature inside the vehicle. , air conditioned. Therefore, the applied voltage is corrected using 100% of the amount of solar radiation detected by the solar radiation sensor 47 [Fig.
]. As a result, the blower motor 73 is controlled in consideration of the influence of solar radiation, and the interior of the vehicle can be cooled against solar radiation. Also, at this time, the lowest voltage VNsln of the blower motor 73 (
3) is gradually increased from 5.5 (V) to 6 (V) as the air volume distribution of the ventilator outlet increases. ,
In the formula ΔTr=Tso-Tr used when calculating
so-Tu is calculated and this ΔTu is used as ΔTr [FIG. 1 (e)]. In other words, immediately after startup when air starts to be emitted from the ventilator outlet 15, ΔTu is used at 100%, and as the air volume distribution of the foot outlet 16 increases, the average value of ΔTu and ΔT (ΔTu+ΔT12
) /2 is used as ΔTr.

As a result, when calculating the applied voltage vH, a value representative of the portion where the temperature changes depending on the air volume distribution is always used.

Next, in region β, the defrost outlet 14 also blows air, the air volume distribution of the defrost outlet 14 increases, and the air volume distribution of the ventilator outlet 15 relatively decreases. Then, the Tdu and Tdou, Tdd and Tdod are connected to each ventilator and each defrost outlet 15.
．． A value synthesized at a rate according to the air volume distribution of 14 will be used to calculate the blowout temperature [Figure 1 (b)]. Therefore, even if the defrost air temperature sensor 23 disposed at the defrost air outlet 14 where the air is blown later does not adapt to the air outlet temperature and has a detection error, the combined value can be used. , the detection error is corrected.

Also, as in the region β, air is blown not only from the ventilator outlet 15 and the foot outlet 16 but also from the defrost outlet 14, and the air volume distribution of the defrost outlet 14 increases, and the air volume distribution of the ventilator outlet 15 increases. When the amount of air is relatively reduced, the need for cooling the vehicle interior using the air blown from the ventilator outlet (5) can also be considered to be reduced in accordance with the air volume distribution. Therefore, the solar radiation sensor 47
When correcting the applied voltage using the detected value, the correction rate is gradually reduced between 100 and 0% [Figure 1 (c)
].

In addition, since all the air outlets 14, 15, and 16 are opened, the minimum voltage V□1 is set to 6 (■) [Fig. 1 (d)], and ΔTr is the average value (ΔTu+ΔTQ).
/2 is used [Figure 1 (e)].

Further, in the region γ, the ventilator outlet 15
are closed and the defrost outlet 14 and foot outlet 16 are closed.
When the air volume distribution is executed in which air is blown from the beginning, the weighting of the differential air outlet temperature Tdd and the differential target air outlet temperature Tdod detected by the differential air outlet temperature sensor 23 disposed at the defrost outlet 14 is as follows. 100%, and the weighting of the vent outlet temperature Tdu detected by the negative vent outlet temperature sensor 58 and the vent target outlet temperature Tdou is 0% [FIG. 1 (b). Therefore, the value detected by the vent outlet temperature sensor 24 which has not adapted to the outlet temperature is not used, and the value detected by the differential outlet temperature sensor 24 is not used.
Calculation of the blowout temperature is performed using the detected value as it is.

At this time, the differential air temperature sensor 23 is in a state adapted to the air outlet temperature due to sufficient air volume distribution and is accurately detecting the air outlet temperature Tdd, so only the value of the differential air outlet temperature sensor 23 is used. Therefore, appropriate blowout temperature control is possible even in the region γ.

Therefore, in this way, the air mix door is driven at any time over the regions α, β, and γ without being fixed, and appropriate blowout temperature control can be continuously performed.

Also, in this way, the defrost outlet 14 and the foot outlet 16
In the region γ where the vehicle interior is opened at the same time, the vehicle interior is heated, and there is no need to consider the thermal influence of solar radiation inside the vehicle interior. Therefore, the applied voltage is controlled with the correction factor being 0%, that is, without making any correction for solar radiation [Fig. 1 (c)], and in order to obtain a sufficient heating effect, the lowest voltage ■□1. is set to 6 (V) [Figure 1 (
E) Co.

In region γ, when the air volume distribution at the defrost outlet becomes overwhelmingly large and the air volume distribution towards the upper part of the vehicle interior increases, ΔTr becomes the average value (ΔTu+ΔTi /2, the temperature difference ΔTu in the upper part of the passenger compartment, where the temperature change is significant at this time, is gradually used, and as a result, applied voltage control is performed that accurately corresponds to temperature changes in the passenger compartment. Figure 1 (e)].

In addition, FIG. 1 (f) shows the weighting for the outlet temperature sensor of the air mix door 12.13, and in the initial stage of the region α, the vent outlet temperature Tdu detected by the vent outlet temperature sensor 24 is set to 100%. Then, the foot outlet temperature Td12 detected by the foot outlet temperature sensor 25 is set to 10
0%, and T gradually increases at the end of region γ.
From dQ to Tdu are used depending on the air volume distribution.

This is because the air mix door 12.13 is an operating element related to the air outlet temperature of the foot outlet 16 in an air conditioner that independently controls the temperature of the upper and lower parts of the vehicle interior. is opened, the foot outlet temperature T is used to control the air mix door 12.13.
cH! It is appropriate to use .

It is of course possible to apply the present invention to another embodiment in which only the air mix door 11 controls the hot air blown out of each outlet 14, 15, 16.

In this case, weighting is performed according to the air volume distribution between the defrost outlet 14 and the foot outlet 16 or the air volume distribution between the ventilator outlet 15 and the foot outlet 16.

As described in detail, in the present invention, the value detected by the outlet temperature sensor is weighted according to the air volume distribution of the outlet, and this weighted value is used to calculate the outlet temperature. Therefore, the outlet air temperature is controlled by adapting to the outlet air temperature of the outlet in accordance with the air volume distribution and using the accurately detected value at a larger ratio. The air mix door, which is an operating element,
It is not fixed for a predetermined period of time (it is driven continuously at any time. Therefore, it is possible to continuously control the appropriate blow-out air, and to constantly create a comfortable space that responds to the ever-changing thermal environment conditions inside the vehicle. can be formed.

Further, according to the present invention, when correcting the applied voltage of the blower motor provided in the air conditioner main body according to the amount of solar radiation, the correction factor is weighted according to the air volume distribution, so that the voltage applied to the blower motor provided in the main body of the air conditioner changes from moment to moment. This makes it possible to control the amount of air immediately in response to the thermal environment conditions within the vehicle interior, and also to continuously appropriately control the amount of air, which is an important element in creating the above-mentioned comfortable space.

[Brief explanation of the drawing]

Fig. 1 is a control characteristic diagram showing an embodiment of the present invention, Fig. 2 is a block diagram of the same embodiment, Fig. 3 is an applied voltage characteristic diagram of a blower motor, and Fig. 4 is a conceptual diagram showing a conventional automatic air conditioner. It is a diagram. 1... Air conditioner main body, 11, 12. 13... Air mix door (operating element related to blowout temperature) 14 Defrost outlet, 15... Ventilator outlet, 16...
・Foot outlet, 20... Defrost door (operating element related to air volume distribution), 21... Ventilator door (
(operating element related to air volume distribution), 22 - foot door (operating element related to air volume distribution), 23... differential outlet temperature sensor, 24 vent outlet temperature sensor, 25... foot outlet temperature sensor, 44... Arithmetic control device, 55...Air volume computing circuit, 60...Blowout temperature computing circuit, 73...Blower motor.

Claims (2)

[Claims] (1) An outlet temperature sensor disposed at a plurality of outlets provided in an air conditioner main body, and a drive device that drives an operating element related to air volume distribution of the outlet and an operating element related to outlet temperature; In addition to calculating the air volume distribution based on predetermined physical environmental factors, the air outlet temperature is calculated using the actual outlet temperature detected by the outlet temperature sensor and the target outlet temperature calculated in advance, and based on the calculation result. In the automatic air conditioner, the calculation control device weights the values detected by each outlet temperature sensor according to the air volume distribution of the outlet, and A correction control device based on air volume distribution for an automatic air conditioner, characterized in that an air outlet temperature calculation circuit is provided that uses the value to calculate the air outlet temperature. (2) The arithmetic and control device includes an air volume calculation circuit that corrects and calculates the voltage applied to the blower motor provided in the air conditioner main body according to the amount of solar radiation, and weights the correction factor according to the air volume distribution. 2. The correction control device according to claim 1, further comprising: a correction control device according to air volume distribution for an automatic air conditioner.