JPH0446819A - Air conditioning device for electric vehicle - Google Patents

Abstract

PURPOSE:To enhance the comfortable feeling of all crew by so adjusting a total diffused air amount in a cabin as to keep a diffused air amount constant at a diffuser not demanding the change of an air distribution ratio on the basis of a ratio determined for front right and left seats after air conditioning. CONSTITUTION:A control device 60 performs air conditioning control, according to the predetermined process on the basis of information from various types of air conditioning-related sensors 56 including an atmospheric temperature sensor and a cabin air sensor. In this case, the control device 60 determines an air distribution ratio for front right and left seats, and causes the operation of a door actuator 53 for adjusting a front right and left air distribution ratio, thereby controlling an air distribution ratio for front right and left seats. When there is either seat not demanding the change of the air distribution ratio, the control device 60 controls the motor 15 of a fan 13 via a fan control amplifier 16 for adjusting a total air amount diffused in a cabin on the basis of an operated air distribution ratio, so as to keep a diffused air amount unchanged for the aforesaid seat.

Description

Detailed Description of the Invention [Objective of the Invention (Industrial Application Field) The present invention has a function of changing the air distribution ratio of temperature-controlled air to each seat, and at the same time has a function of changing the air distribution ratio. Regardless of the situation, the present invention relates to an air conditioner for an automobile that has the function of maintaining a constant volume of temperature-controlled air blown from the side that does not require a change in the air distribution ratio.

(Problems to be solved by conventional technology and inventions) In the future,
Automotive air conditioners that will be installed in luxury cars are
Not only does it have the function of air conditioning the rear seats, but it also has the function of independently air conditioning the left and right front seats and the left and right rear seats according to the occupant's preference.

Automotive air conditioners having such functions are currently being developed by various companies, and one example of such technology is the one disclosed in Japanese Patent Publication No. 1-47325.

This automotive air conditioner divides the interior of a vehicle into a plurality of air conditioning zones, and attempts to achieve the air conditioning conditions required for each zone by distributing heated air blown toward each zone.

However, in the above-mentioned automotive air conditioners that have been developed to date, optimal control is certainly performed for the heat load required for each zone, but on the other hand, The disadvantage is that the air conditioning feeling may be impaired. For example, if you request warmer temperature-controlled air in one of the four zones, the heat load in that zone has increased, so change the opening of the mix door to create even warmer temperature-controlled air. It is necessary to either increase the amount of air blown out, increase the amount of air blown out, or use both of the above in combination to respond to the increase in heat load. However, when such control is performed,
This will cause some kind of change in the air conditioning feeling to zones that are satisfied with the current state.

The present invention has been made to solve these conventional problems, and aims to provide an air conditioner for an automobile that can realize an air conditioning feel that satisfies all occupants.

[Structure 1 of the Invention (Means for Solving the Problems) 1] The present invention for achieving the objective described above is based on Therefore, in automatic heavy-duty air conditioners that automatically maintain the temperature inside the vehicle at a set temperature, front seat left/right air distribution ratio adjustment is used to adjust the air distribution ratio of air after temperature adjustment to the left side of the front seat and the right side of the front seat. Based on the air distribution ratio set by the front seat left and right air distribution ratio adjustment means, the air volume of the temperature-controlled air blown from the side that does not request a change in the air distribution ratio changes. The present invention is characterized by comprising an air volume adjusting means for adjusting the total air volume blown into the vehicle interior so that the total air volume is constant regardless of the air flow rate.

In addition, in an automobile air conditioning system that automatically maintains the temperature inside the vehicle at a set temperature based on information from various sensors installed inside and outside the vehicle, and front and rear seat air distribution ratio adjusting means for adjusting the air distribution ratio to the rear seat side, and the front left side of the front seat and the front seat where the temperature-controlled air is sent to the front seat side adjusted by the front and rear seat air distribution ratio adjusting means. A front seat left/right air distribution ratio adjusting means for adjusting the air distribution ratio to the right side, and a temperature-controlled air to the rear seat side adjusted by the front and rear seat air distribution ratio adjusting means to the left side of the rear seat and the right side of the rear seat. the rear seat left and right air distribution ratio adjustment means, the front seat left and right air distribution ratio adjustment means, the front seat left and right air distribution ratio adjustment means 112, and the rear seat left and right air distribution ratio adjustment means. Based on each air distribution ratio, the amount of air blown into the vehicle interior remains constant regardless of changes in the air distribution ratio, whether the volume of air after temperature control is blown out from the side that is not required, or whether the air distribution ratio is changed. The present invention is characterized in that the wind for adjusting the total air volume and the adjustment means are h'.

(Operation) The automobile air conditioner of the present invention configured as described above operates as follows.

When the front seat left/right air distribution ratio adjusting means adjusts the temperature (the air distribution ratio of g6 air to the left side of the front seat and the right side of the front seat), the air volume adjusting means adjusts the air volume by this front seat left/right air distribution ratio adjusting means. Based on the set air distribution ratio, the air distribution ratio is changed or blown into the vehicle interior so that the volume of air after temperature control blown out from the side that is not required remains constant regardless of changes in the air distribution ratio. The total air volume is adjusted. Therefore, even if the air distribution ratio for the left and right front seats is set to be unbalanced, the air conditioning feeling will only change for the passenger who requested an increase in the air distribution ratio, and the passenger does not request an increase. The air conditioning feeling for the side occupants will remain the same regardless of changes in the air distribution ratio.

Furthermore, when the respective air distribution ratios are set by any of the front and rear seat air distribution ratio adjustment means, the front seat left and right air distribution ratio adjustment means, and the rear seat left and right air distribution ratio adjustment means, the air volume adjustment means adjusts the settings. Based on the air distribution ratio determined by the air distribution ratio, the flow rate of the temperature-controlled air blown out from the side for which no change in the air distribution ratio is requested is constant regardless of the change in the air distribution ratio. Adjust the total air volume. Therefore, for example, even if only the passenger on the left side of the rear seat requests an increase in the air distribution ratio, the air conditioning fillings for the occupants on the right side of the front seat and the rear seat remain as they were before.

(Example) Hereinafter, an example of the automotive air conditioner according to the present invention will be described in detail based on the drawings.

FIG. 1 is a schematic configuration diagram of an air conditioner for an automobile according to the present invention, FIG. 2 is an arrangement diagram of each door that adjusts the air distribution ratio in the device, and FIG. 3 is a control system in the device. FIG.

The general configuration of the automotive air conditioner according to the present invention is as follows.
As shown in the figure, it is configured as follows.

The intake unit 10 is provided with an intake door 12 and a fan 13, and depending on the set position of the intake door 12, the fan 13 moves the vehicle.

The selection of the outside air to be introduced into the room or the mixing ratio of the inside and outside air is determined. The intake door 12 is driven by an intake door actuator 14, and the rotation speed of a fan motor 15 that drives the fan 13 is controlled by a fan control amplifier, thereby controlling the amount of air blown into the vehicle interior.

The cooler unit 20 is provided with an evaporator 22 that cools the air sent out from the intake unit 10, and the evaporator 22 is supplied with refrigerant compressed by a compressor (not shown).

The heater unit 30 is provided with a heater core 32,
Engine cooling water is supplied here. On the upstream side of this heater core 32, a front air mix door 33 is provided.
Two air mix doors are provided: a rear air mix door 34 and a rear air mix door 34.

The front air mix door 33 is for controlling the temperature of the air blown out to the front seat side, and the rear air mix door 34 is for controlling the temperature of the air blown out to the rear seat side. The front air mix door 33 is operated by a front air mix door actuator 35.
The rear air mix doors 34 are each driven by a rear air mix door actuator 36. Further, on the downstream side of the heater core 32, a first separate door 37 and a second separate door 38 are provided.

This first separate door 37 and second separate door 38
It is configured to rotate in conjunction with the door and is driven by a separate door actuator 39. Also,
Each door disposed in the air distribution passage 40 on the front seat side that forms a part of the heater unit 30 includes a differential door 41 that opens and closes the front seat differential air outlet, a front door 42 that opens and closes the front seat air outlet, and a front door 41 that opens and closes the front seat differential air outlet. Foot door 4 that opens and closes the seat foot air outlet
3 and these doors are driven by a front mode door actuator 44. Further, the air distribution passage 45 on the rear seat side, which forms a part of the heater unit 30, has an air distribution ratio adjusted between the air distribution passage 40 on the front seat side and the air distribution passage 45 on the rear seat side. A front/rear air distribution ratio adjustment door 46 that determines the ratio of air blown out from the rear seat vent outlet and the rear seat foot outlet 47 that determines the proportion of air blown out from the rear seat vent outlet and the rear seat foot outlet.
and is provided. Front/rear air distribution ratio adjustment door 4
6 is front/rear air distribution ratio adjustment door actuator 48
The rear mode door arrow 47 is driven by a rear mode door actuator 49.

The air distribution road 40 on the front seat side and the air distribution path 45 on the rear seat side are respectively connected to a front duct 50 and a rear duct 51 shown in FIG. 2. A front left/right air distribution ratio adjusting door 52 for adjusting the air distribution ratio between the left and right sides of the front seat is provided in the front duct 50 and is driven by a front left/right air distribution ratio adjusting door actuator 53 . For example, if the front left and right air distribution ratio adjustment door 52 is rotated by 61 points from the solid line position in the figure where the left and right air distribution ratios are equal as shown in the figure, the air distribution ratio on the left side as viewed in the drawing will increase, and vice versa. The air distribution ratio on the right side decreases. As a result, the left and right air conditioning capacities will change. Further, a rear left/right air distribution ratio adjustment door 54 is provided in the rear duct 51 to adjust the air distribution ratio between the left and right rear seats, and is driven by a rear left/right air distribution ratio adjustment door actuator 55 . Further, in the air distribution passage 45 on the rear seat side, there is provided a front/rear air distribution ratio adjustment door 46 which is driven by the front/rear air distribution ratio adjustment door actuator 48 as described above. The operation of the rear left/right air distribution ratio adjustment door 540 is similar to that of the front left/right air distribution ratio adjustment door 52, and its rotation changes the air conditioning condition of the left and right rear seats. The function of the front/rear air distribution ratio adjustment door 46 is the same as that of other air distribution ratio adjustment doors in that the air distribution ratio is changed by its rotation, but the process of adjusting the air distribution ratio is different. In other words, this rotation reduces the amount of temperature-controlled air introduced into the air distribution passage 45 on the rear seat side, and almost the same amount of air is supplied to the air distribution passage 40 on the front seat side as the reduced amount. This means that the amount of air flowing to the front seats increases. Therefore, the front/rear air distribution ratio adjustment door 46 changes the amount of air supplied to the front seats by reducing the amount of air supplied to the rear seats.

And the above-mentioned fan control amplifier 16 and various actuators 14, 35, 36, 39, 44, 48
, 49, 53, and 55 are connected to a control device 60 that comprehensively controls the operation of the air conditioner. This control device 60 includes various sensors 56 installed inside and outside the vehicle interior.
Connected are a front control panel 57 and a rear control panel 58 that set the air conditioning conditions for the front and rear seats, as well as five McNet clutches that control the operation of the compressor. The details of the configuration of the control system mainly composed of the control device 60 will be explained below with reference to FIG. 3.

As shown in FIG. 3, the control device 60 mainly includes a CPU 70.
, RAM 71 and ROM 72 are configured as +11-.

The RAM 71 temporarily stores three types of data related to air conditioning control.

Further, the ROM 72 stores a professional club for controlling the air conditioning, data indicating the relationship between the air distribution ratio and the air volume, and the like. The CPU 70 executes the program stored in this ROM 721 (that is, it manually inputs signals from the three types of data output sources described below, performs calculations,
Various drive sources are operated based on the results of this calculation.

The rear control panel 58 has an independent '1 mode that is set to a mote that independently air-conditions the rear seats as well as the front seats.
1'+A adjustment switch 80, a left temperature control switch 81 that sets the temperature on the left side of the rear seat, a rear temperature control switch 82 that blows out temperature-controlled air from the rear seat vent outlet, and a rear temperature control switch 82 that sets the temperature on the right side of the rear seat. There is also a right temperature control switch 83.

The various sensors 56 include an outside air sensor 90 that detects the outside temperature, and 7. ! 1. A solar radiation sensor 92 that detects the amount of solar radiation, a refrigerant temperature sensor 93 that detects the temperature of the refrigerant circulating in the compressor and evaporator 22, and an intake unit]0. It is composed of a suction temperature sensor 94 that detects the temperature of the air, and a water temperature sensor 95 that detects the temperature of the engine cooling water.

The control panel 57 includes a fan switch 100 for setting the rotation speed of the fan motor 15;
An air outlet switch 101 that selects the air outlet [ ] that blows out temperature-controlled air, a temperature control switch 102 that sets the temperature inside the vehicle, and an office air conditioning system 1 that performs air conditioning using only ram pressure.
03, an economy switch 104 that performs air conditioning using the minimum amount of compressor necessary, an air conditioner switch 105 that performs fully automatic air conditioning, an RFC switch 106 that controls the setting position of the intake door 12, and sets the air conditioning mode to differential mode. DEF switch 107 to switch to heating, and rear seat priority heating switch 1 to switch to heating that prioritizes rear seats.
08, 10 rear vent switches that blow out temperature-controlled air from the rear seat vent outlet, and an assist-side temperature control switch 110 that sets the temperature on the left side of the front seat.

All of the following data output sources are electrically connected to the CPU 70, and the output data is sequentially stored in the RAM 71, and is called by the CPU 70 and used for calculations as necessary.

It is also a driving source. Magnetic clutch 59 described above.
Fan control amplifier 16. Intake door actuator 14. Front air mix door actuator 35. Front mode door actuator 44. Front left/right air distribution ratio adjustment door actuator 53. Front/rear air distribution ratio adjustment door actuator 48. Rear left/right air distribution ratio adjustment door actuator 55. Rear air mix door actuator 36. Each of the rear mode door actuator 49 and the separate door actuator 39 is also connected to the CPU 70, and their operations are controlled based on instructions from the CPU 70.

The operations of each of the drive sources described above have already been explained in the explanation of FIGS. 1 and 2, and will therefore be omitted.

Next, based on the flowcharts of FIGS. 4 and 5,
The operation of the automotive air conditioner according to the present invention will be explained.

Note that the flowcharts shown in FIGS. 4 and 5 are used in normal air conditioning control, so that the features of the present invention can be easily understood. This is omitted.

First, the CPU 70 inputs signals from the various sensors composing the various sensors 56, and at the same time inputs the setting status of each switch arranged on the front control panel 57 and the rear control panel 58. (Steps 1 and 2). Next, the CPU 70 calculates the optimal blowing temperature TF of the temperature-controlled air to be blown into the vehicle interior based on the set temperature of the temperature control switch 102 provided on the front control panel 57, and The opening degree θ of the front air mix door 33 is calculated based on (steps 3 and 4). If the independent temperature control switch 80 provided on the rear control panel 58, which is used to air-condition the front seats and rear seats independently, is not turned on, that is, the independent temperature control mode is set. If not, the opening degree θ4 of the rear air mix door 34 is the Freon calculated in step 4) and the opening degree θ of the air mix door 33.
1, and calculate the opening degree of the intake door 12 and the air conditioning mode to select which outlet the temperature-controlled air is to be blown from based on the value of T obtained in step 3 (steps 5 to 1). 8). Next, T1 obtained in step 3,
The amount of air that should be blown into the vehicle interior is calculated based on the value of . This calculation will be explained in detail later, but is performed based on the relationship between the value of this Tr stored in the ROM 72 and the voltage value applied to the fan motor 15 (step 9).
.

If the calculated air volume Ga exceeds the specified air volume, the air distribution ratio for the left and right front seats will be set to 50%. Therefore, at this time, the opening degree of the front left/right air distribution ratio adjusting door 52 is located at the intermediate position as shown by the solid line position in FIG. 2 (step 10.30). On the other hand, if the calculated picture style ff1Ga is less than the specified air volume, RO
Temperature control switch 102 stored in M72. Assist side temperature control switch 110. The respective set temperatures of the left temperature control switch 81 and the right temperature control switch 83 and the fan motor 1
The data relating to the voltage value applied to the air conditioner 5 is looked up, and the required air volume for the driver's seat and the required air volume for the driver's seat are calculated. In this case, the independent temperature control mode is not set, so of the above data, the set temperatures of the temperature control switch 102 and the temperature control switch 110 on the unstuck side and the temperature applied to the fan motor 15 are used. This is the data on the relationship with the voltage value (
Step 11.12). Next, the required total air volume and air distribution ratio to each seat are calculated from the air volume for each seat calculated in the process of L, and from this total air volume and air distribution ratio, Look up the data table that shows the relationship between the total air volume and the opening degree of each air distribution ratio adjustment door, which is stored in advance in the ROM 72, and determine the voltage to be applied to the fan motor 15 and the opening of each air distribution ratio adjustment door. This calculation is performed every time, and the result is outputted to the fan control amplifier 16 and each air distribution ratio adjusting door actuator 48, 53, 55.

In this case, since the independent temperature control mode is not set, the front left/right air distribution ratio F [only the door 52 is set to the angle calculated by the front left/right air distribution ratio adjusting door actuator 53. Further, the processing from steps 11 to 14 described above will be explained in detail later (step 13.14). When the above processing is completed, compressor control is performed to determine whether the Macnet clutch 59 is turned on or off, and the process returns to the beginning of the main flowchart (step 15).

By the way, if the independent temperature control switch 80 is turned on in step 5, the above-mentioned independent temperature control mode F is set, so in this case, the temperature on the rear seat side must also be controlled independently. become.

In this mode, the CPU 70 optimally blows out the temperature-controlled air to be blown to the rear seat side based on the fixed temperature settings of the left temperature control switch 81 and the right temperature control switch 83 provided on the rear control panel 58. Calculate the temperature T8, and calculate this T8
The opening degree θ8 of the rear air mix door 34 is calculated based on the value of (step 16.17). And step 3
Calculate the opening degree of the intake door 12 based on the value of the optimal air outlet temperature T" determined in , and calculate the air conditioning mode for the front seat side to select which outlet the temperature-controlled air is to be blown out from.
Calculate the air conditioning mode for the rear seat side (step 18~
20). Next, based on the value of T1 obtained in step 3, the air volume Ga to be blown into the vehicle interior is calculated. As described above, this calculation is performed based on the relationship between the value of T stored in RO~172 and the voltage value applied to the fan motor 15 (step 21). If the calculated air volume Ga exceeds the specified air volume, the front seat left and right air distribution ratio and the rear seat left and right air distribution ratio are each 50%.

It will be set to 50%. Therefore, at this time, the opening degree of the front left/right air distribution ratio:A door 52 is the second.
The rear left/right air distribution ratio adjustment door 54 is also located in the middle as shown in the solid line position in FIG. 2 (step 22.30).
). On the other hand, if the calculated picture style mGa is less than the specified air volume, the temperature control switch 10 indicated by tσ in RO~172
2. Angst side temperature control switch 110. Left temperature control switch 8
1 and the right i'Aa adjustment switch 83 and the voltage value applied to the fan motor 15 are looked up, respectively, and the data is looked up and applied to each of the driver's seat assist seat, rear seat left, and rear seat right seats. The required air volume is calculated in each step (steps 23 to 26). Next, 1-
From the air volume for each seat calculated in the process, the required total air volume and air distribution ratio to each seat are calculated, respectively.
From this total air volume and air distribution ratio, look up a data table that shows the relationship between the total air volume and the opening degree of each air distribution ratio adjustment door stored in the ROM 72, and then
The voltage to be applied to the fan control amplifier 16 and the opening degree of each air distribution ratio adjustment door are calculated, and the results are output to the fan control amplifier 16 and each air distribution ratio adjustment actuator 48, 53, and 55 (step 27.28). When the above processing is completed, compressor control is performed to determine whether the five Macnet clutches are turned on or off, and the process returns to the first processing of main flowchart 1 (step 15).

The flowchart shown in FIG. 6 is a subroutine flowchart 1 for air volume calculation performed in step 21 with the steering knob shown in FIGS. 4 and 5.

First, the CPU 70 inputs the optimal outlet temperature T, which has been increased by i as a result of the calculation, and then manually inputs the amount of solar radiation detected by the eye radiation sensor 92 (step 4041). Next, when the air conditioning mode is the calculated air conditioning mode or the hent mode, an operation is performed to add correction according to the manually input amount of solar radiation to calculate the air volume Ga. On the other hand, if it is not Hentmort, the wind @Ga is calculated without adding correction for the amount of solar radiation. This calculation of the air volume Ga is performed by looking up the data regarding the optimum blowing temperature T and the air volume as shown in FIG. 7 stored in the ROM 72 (step 42.43.4).
4).

The flowchart shown in FIG. 7 is a subroutine flowchart for calculating the required air volume for each seat, which is performed in steps 11, 12, 23, 24, 25, and 26 shown in FIGS. 4 and 5.

To calculate the required air volume for a certain seat, first input the set temperature of the temperature control switch installed at each seat (Step 50), and then calculate the set temperature for each seat based on this input set temperature. Look up airflow data. This data corresponds to the diagram shown in FIG. 11, and the horizontal axis of the data used here is the set temperature. Such data is prepared exclusively for each of the four temperature control switches provided. This data is of course stored in the ROM 72 (step 51). The CPU 70 calculates the required air volume for each seat based on these data (step 52).

The flowchart shown in FIG. 9 is a subroutine flowchart for calculating the air volume and air distribution ratio performed in step 13 and step 27 shown in FIGS. 4 and 5.

The CPU 70 calculates the total required air volume by adding each required air volume calculated by the process of the flowchart of FIG. 8 (step 60). Next, the ratio of this total air volume to the air volume required only for the front seat side is calculated to calculate the air distribution ratio for the front seat side. This calculation inevitably determines the air distribution ratio on the rear seat side (step 61).
. Then, the air distribution ratio for the driver's seat is calculated by calculating the ratio between the air volume on the front seat side and the air volume on the driver's seat.

Through this calculation, the air distribution ratio of the assist seat is inevitably determined (step 62). Furthermore, the air distribution ratio for the right rear seat is calculated from the air volume on the rear seat side and the air volume on the right rear seat. The air distribution ratio for the left rear seat is inevitably determined by this calculation (step 63).

The flowchart shown in FIG. 10 is a subroutine flowchart for calculating the fan voltage and door angle, which are processed in steps 14 and 28 of FIGS. 4 and 5.

The CPU 70 manually looks up each air distribution ratio calculated in the process of the flowchart shown in FIG. 9 at step 70) and an air volume map corresponding to the line diagram shown in FIG.

Three types of air volume maps are prepared in advance: one for the driver's seat, one for the front and rear seats, and one for the rear seats. Of course, this air volume map is also stored in the ROM 72.

This air volume map shows the opening degree of each air distribution ratio adjustment door relative to the air distribution ratio (air distribution ratio of 50%, deviation angle at the same position at about 50%),
It is composed of data regarding the calculated total air volume and the voltage applied to the fan motor 15 necessary to add 77 A to the air distribution ratio (steps 71 to 73).

By looking up this air volume map, the voltage to be applied to the fan motor 15 and each air distribution ratio adjustment door 52, 46 are determined.
．． 54 respective setting angles θ1. θ2. θ, are calculated respectively (steps 74 and 75).

Then, this calculated fan voltage is applied to the fan motor 15 by the fan motor control amplifier 16, and each air distribution ratio adjustment door is set at each calculated setting angle θ1. θ2. θ3 is set by each air distribution ratio adjustment door actuator 53, 48.55 (step 7
6).

The detailed operation of the automotive air conditioner of the present invention is as described above, but in order to further clarify the gist of the present invention, the following will describe the actual operation.

1. When not in independent temperature control mode This mote operates with the independent temperature control switch 80 turned off. In this mode, the air conditioning for the rear seats can be considered to be performed in conjunction with the air conditioning for the front seats.

First, the set temperature of the left temperature control switch 81 provided in the rear seat is 27°C, the set temperature of the right temperature control switch 83 is 26°C, and the set temperature of the temperature control switch 102 provided in the front seat. is 26℃, assist side temperature control switch 1
It is assumed that each of the 10 set temperatures is set to 25°C.

First, when air conditioning is started in this state, the optimum blowout temperature T is calculated based on the set temperature of the temperature control switch 102, 26°C, and the front air mix door 33 is opened based on this TF. The opening degree is calculated, and the front air mix door 33 and rear air mix door 34 are set to that opening degree. Next, the opening degree and air conditioning mode of the intake door 12 are calculated based on this TF, and the opening degree of the intake door 12 and each of the differential, vent, and foot doors 41, 42, 43 are calculated.
is driven so that the air conditioning mode is realized.

Furthermore, based on this Tr, a picture style ff1Ga is calculated based on the air volume data shown in FIG. Next, based on the set temperature of temperature control switch 102, 26°C, and the set temperature of assist side temperature control switch 110, 25°C, air volume data corresponding to each temperature control switch as shown in FIG. Look up and calculate the required air volume for the driver seat and assist seat. Based on the total air volume obtained in this way and the air volume for each seat, the air distribution ratio of the Drino/seat is calculated. Finally, referring to the air volume map shown in Fig. 13 based on the total air volume Ga and the air distribution ratio, if the calculated air distribution ratio is 65%, the driver precision side As shown in the figure, the opening degree of the front left/right air distribution ratio adjustment door 52 is set to +θ1° so that the airflow volume is greater than the airflow volume on the assist seat side, and the voltage applied to the fan motor 15 is set to approximately 3°. It becomes 5■. By performing the above processing, the air conditioning on the front seat side will meet the requirements.

Next, in this state, it is assumed that the assist-side occupant moves the assist-side temperature control switch 110 to set the set temperature to 27°C. In this case, the same process as above will be performed, or
Among the elements calculated when calculating the air distribution ratio and the air volume, only the element of the required air volume in the assist seat increases. Will the total air volume increase as a result?
The amount of increase is the increase in airflow to the assist seat, so
As a result, the air conditioning condition of the driver's seat will not change to the same extent, but only the air conditioning condition of the assist seat will change.

2. In the case of independent temperature control mode This mode operates when the independent temperature control switch 80 is turned on. In this mote, air conditioning for the rear seats and air conditioning for the front seats are performed independently of each other.

First of all, as mentioned above, the setting temperature of the left temperature control switch 81 installed in the rear seat is 27°C1, the setting lrA degree of the right temperature control switch 83, 26°C1, and the temperature installed in the front seat. The setting temperature of the control switch 102 is 26°C,
It is assumed that the set temperature of the assist side temperature control switch 110 is set to 25°C.

When air conditioning is started in this state, the optimum blowout temperature T1 is first calculated based on the set temperature of the temperature control switch 102, 26°C, and the opening degree of the front air mix door 33 is calculated based on this T. is calculated and set to the front air mix door 33 or its opening degree. On the other hand, the optimum blowout temperature T8 is calculated based on the set temperature of the left temperature control switch 81, 27°C, and the set temperature of the right temperature control switch 83, 26°C, and based on this TR, the opening degree of the rear air mix door 34 is calculated. It is calculated and set to the rear air mix door 34 or its opening degree. Next, based on this T1, the intake door 12
The opening degree and air conditioning mode of the intake door 12 are calculated.
The differential, hent, and foot doors 41, 42, and 46 are driven so as to be realized. on the other hand,
Based on (2), the air conditioning mode for the rear seat is calculated, and the rear mode door 47 is driven to realize its air conditioning mode.

Furthermore, based on this T, the total air volume Ga is calculated based on the air volume data shown in FIG. Next, the setting temperature of the temperature control switch 102 is 26°C, the setting iAa degree of the unstuck side lAX adjustment switch 110, 25°C and the setting temperature of the left temperature adjustment switch 81, 27°C and the setting temperature of the right 7Mt adjustment switch 83.
Based on the set temperature of 26°C, each l:+11LrJ! as shown in FIG. ] Look up the air volume data corresponding to the switch and calculate the required variable air volume for the driver seat, assist seat, 1 [, rear seat left, and rear seat right. Based on the total air volume on the front seat side and rear seat side and the air volume on each seat determined in this way, the air distribution ratio for the front and rear seats, the air distribution ratio for the driver seat, and the air distribution ratio for the right rear seat are determined. Calculate each wind ratio. Finally, the total air volume Ga
Finally, the front/rear air distribution ratio adjusting door 46, front left/right air distribution ratio adjusting door 52, and rear left/right air distribution The wind ratio adjustment door 54 is set to the calculated opening degree, and the calculated applied voltage is supplied to the fan motor 15. Note that a dedicated air volume map is prepared for each air distribution ratio adjustment door, and the opening degree of each air distribution ratio adjustment door is determined by looking up the corresponding air volume map. In addition, in this state, for example, if the passenger on the right rear seat changes the temperature setting, the air volume and air distribution ratio will be determined so as not to affect other passengers, and only the passenger on the right rear seat will change the temperature setting. Air conditioning will now be performed as requested. The principle is as described above.

In the above embodiment, the case where one air volume map is prepared is illustrated, but it is desirable to provide one for each air conditioning mode, as well as for each independent temperature control mode and non-independent temperature control mode.

[Effects of the Invention] As is clear from the above explanation, according to the present invention, even if the air distribution ratio of the left and right sides of the front seats is set unbalanced,
Only the air conditioning feeling of the passenger who requested an increase in the air distribution ratio changes, and the air conditioning feeling of the passenger who did not request the air conditioning feeling remains the same as before regardless of the change in the air distribution ratio.

Furthermore, even if only the passenger on the left side of the rear seat requests an increase in the air distribution ratio, the air conditioning feeling for the passenger on the right side of the front and rear seats will remain the same as before, so all passengers will This means that satisfactory air conditioning can be achieved.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram of an air conditioner for an automobile according to the present invention; Fig. 2 is an arrangement diagram of each door that adjusts the air distribution ratio in the device; and Fig. 3 is a control system in the device. 4 and 5 are operational flowcharts of the control system shown in FIG. 3, FIG. 6 is a subroutine flowchart for air volume calculation, and FIG. 7 is a flowchart of the subroutine used to calculate air volume. Figures 8 to 10 are subroutine flowcharts for calculating the required air volume, air volume distribution ratio, fan voltage, and door angle. Figure 11 is a flowchart for calculating the required air volume. Schematic diagram of air volume data used. FIG. 12 is a schematic diagram of air volume data used when calculating fan voltage and door angle. 15...Fan motor (air volume adjustment means), 16...
Fan control amplifier (air volume adjustment means), 46...Front/rear air distribution ratio adjustment door (front and rear air distribution ratio adjustment means), 48...Front/rear air distribution ratio adjustment door actuator (front and rear air distribution ratio adjustment F/stage), 52...Front left/right air distribution ratio adjustment door (front seat left/right air distribution ratio adjustment means), 53...Front left/right air distribution ratio adjustment door actuator (
Front seat left/right air distribution ratio adjustment means), 5/1... Rear left/right air distribution ratio adjustment) A (Rear seat left/right air distribution ratio adjustment means), 55... Rear left/right air distribution ratio adjustment door actuator (front seat left/right air distribution ratio adjustment means) Air distribution ratio adjustment means), 56-8 persimmon sensor, 7[1...CPU (air volume adjustment means 1 front and rear seats air distribution ratio adjustment means, front seat left and right air distribution adjustment child stage, rear seat left and right air distribution ratio adjustment means) .

Claims (1)

[Claims] [1] Various sensors (56) provided inside and outside the vehicle interior
In an automobile air conditioner that automatically maintains the temperature inside the vehicle at a set temperature based on a signal from the Based on the air distribution ratio set by the left and right air distribution ratio adjustment means (52, 53, 70) and the front seat left and right air distribution ratio adjustment means (52, 53, 70), no change in the air distribution ratio is requested. Air volume adjustment means (15, 16,
70) An air conditioner for an automobile characterized by having the following. [2] Various sensors installed inside and outside the vehicle (56)
In an automotive air conditioning system that automatically maintains the temperature inside the vehicle at a set temperature based on signals from the The air distribution ratio adjusting means (46, 48, 70) and the air after temperature control adjusted by the front and rear seat air distribution ratio adjusting means (46, 48, 70) are sent to the left side of the front seat and the front seat. Front seat left and right air distribution ratio adjusting means (52,
53, 70), and adjust the air distribution ratio of the temperature-controlled air to the rear seat side adjusted by the front and rear seat air distribution ratio adjusting means (46, 48, 70) to the left side of the rear seat and the right side of the rear seat. Rear seat left/right air distribution ratio adjustment means (
54, 55, 70), the front and rear seat air distribution ratio adjustment means (46, 48, 70), the front seat left and right air distribution ratio adjustment means (52, 53, 70), and the rear seat left and right air distribution ratio adjustment means. Based on the respective air distribution ratios set by (54, 55, 70), the volume of air after temperature adjustment blown out from the side that does not request a change in air distribution ratio, regardless of the change in the air distribution ratio. Air volume adjustment means (1
5, 16, 70).