JPH0986138A - Air conditioning control device of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constantly and stably carry out ventilation to a front seat by providing a means to correct quantity of air conditioning air generated by a blowerat the time when a rear ventilation control means is operated by a manual operation means while a blower works. SOLUTION: Main blower voltage is set at basic main blower voltage and it is output to a main blower 16 at the time when a rear ventilation switch 43 is off. Consequently, in the case when rear ventilation air is not supplied, air conditioning air of air capacity set by an operation member for air conditioning of an operation panel is supplied to a front seat, and this state is maintained while a signal value of the rear ventilation switch is zero. In the meantime, when the signal value of the rear ventilation switch 43 is changed, for example, from zero to either of 1, 2, 3, that is, when the switch 43 is changed from oo to on, correction quantity of the main blower voltage is decided in accordance with a previously set map. Accordingly, air blowing quantity to a front seat is not suddenly changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning control device for a vehicle, and more particularly to a supply control of air conditioning air when supplying air conditioning air to front seats and rear seats.

[0002]

2. Description of the Related Art As disclosed in, for example, Japanese Patent Application Laid-Open No. 6-92135, a recent vehicle is equipped with an air conditioner capable of supplying conditioned air to the front seats as well as the rear seats. Sometimes.

In this air conditioner, the temperature of the air taken into the main duct by the blower is adjusted by an evaporator and a heater core, and the front seat is passed through a vent duct, a heat duct or a defroster duct according to the temperature and the blowing mode. A blower configured to supply the air to the rear seats by means of a rear vent duct and a rear heat duct branched from the main duct and the like as well as supplying the air to the rear seats. A rear vent control means such as a damper and a manual operation means for an occupant in the rear seat to operate the rear vent control means are configured.

[0004]

By the way, according to the air conditioner having the above-mentioned configuration, the manual operation means is operated during the operation of the blower to start blowing air to the rear seats or the amount of air blowing to the rear seats. If the amount of airflow is increased, the amount of air blown to the front seats will be reduced by that amount, and the passengers in the front seats will feel uncomfortable and uncomfortable. Further, such a change in the amount of air blown to the front seats also occurs when the air blow to the rear seats is finished or when the amount of air blown is reduced.

Therefore, an object of the present invention is to solve the above-mentioned problems in an air conditioner capable of supplying conditioned air to the front seats and the rear seats.

[0006]

In order to solve the above problems, the air conditioning control device according to the present invention is characterized by using the following means.

First, the invention according to claim 1 of the present application (hereinafter,
The first invention) has a duct for supplying the conditioned air generated by the blower to the front seat and the rear seat, respectively, and a rear vent control means for controlling the ventilation of the conditioned air to the rear seat side in the duct for the rear seat. And a manual operation means for manually operating the control means is provided, the rear vent control means is operated by the manual operation means while the blower is operating, and is generated by the blower. It is characterized in that a blower air volume correcting means for correcting the air volume of the conditioned air is provided.

The invention according to claim 2 (hereinafter referred to as the second invention) is, in the above-mentioned first invention, the rear vent control means for variably controlling the amount of air blown to the rear seat side according to the operation of the manual operation means. The blower air flow rate correction means is configured to correct the blower air flow rate according to the air flow rate to the rear seat side controlled by the rear vent control means.

The invention according to claim 3 (hereinafter, referred to as the third
The invention is characterized in that the rear vent control means in the first invention or the second invention is one or both of the auxiliary blower and the damper provided in the rear seat duct.

The invention according to claim 4 (hereinafter referred to as the fourth invention) is the same as the first invention or the second invention,
It is characterized in that the blower air volume correction means is configured to make the correction amount smaller when the blower air volume is large than when it is small.

Further, the invention according to claim 5 (hereinafter referred to as the fifth
According to the invention), the blower air flow rate correction means in the first invention or the second invention is configured to delay the blower air flow rate by a predetermined time at the start of the control of blowing air to the rear seats by the rear vent control means and start the correction of the blower air flow rate. It is characterized by having done.

The invention according to claim 6 (hereinafter referred to as the sixth invention) is the same as the blower air volume correction means in the first invention or the second invention, when the rear vent control means starts the blower control to the rear seat side. The blower air volume is configured to be changed to a correction target value over a predetermined time.

The invention according to claim 7 (hereinafter referred to as the seventh aspect)
The invention also refers to the blower air flow rate correction means in the first invention or the second invention, after the blower air flow rate correction means is started by the rear vent control means for a predetermined period of time to start the correction of the blower air flow rate. It is characterized in that the correction target value is changed over a predetermined time.

On the other hand, an invention according to claim 8 (hereinafter, referred to as an eighth invention) is, when the blower air volume correcting means changes the blower air volume to a correction target value over a predetermined time in the sixth invention or the seventh invention. The feature is that the change is made linear in the course of time.

Similarly, the invention according to claim 9 (hereinafter referred to as the ninth aspect)
In the sixth invention or the seventh invention, when the blower air volume correction means changes the blower air volume to the correction target value over a predetermined time, the change is made stepwise with respect to the passage of time. It is characterized by being configured.

By using the above means, the following effects can be obtained according to each invention.

According to the first aspect of the invention, the blower air flow rate correction is performed when the rear vent control means is operated by the manual operation means during the operation of the blower to start blowing the conditioned air to the rear seat side, for example. Since the air volume of the conditioned air generated by the blower is corrected by the means, it becomes possible to offset the decrease in the air volume to the front seat side due to the start of air blowing to the rear seat side, for example, and to the front seat side. Fluctuations in the amount of blown air are suppressed.

According to the second aspect of the invention, when the rear vent control means variably controls the amount of air blown to the rear seat, for example, when the air blow to the rear seat is started or the amount of air blown is increased. In addition, since the blower air volume is corrected in accordance with the started or increased air volume, the fluctuation of the air volume to the front seat side can be suppressed more reliably.

According to the third aspect of the invention, the operation of the first aspect or the second aspect of the invention is as the rear vent control means.
This can be obtained for an air conditioner provided with either or both of the auxiliary blower and the damper provided in the rear seat duct.

Further, according to the fourth aspect of the invention, the correction amount of the blower air amount associated with the air blown to the rear seat side is made smaller when the blower air amount is large than when the blower air amount is small. When the reduction in the amount of air blown to the front seat side due to the air blown to the seat side does not cause much problem, it is possible to avoid a situation in which unnecessary correction is made and the passengers feel uncomfortable.

Further, according to the fifth aspect of the invention, when the rear vent control means starts the air blowing control to the rear seat side, the correction of the blower air amount is started with a delay of a predetermined time, so that the air blowing amount to the front seat side is reduced. It is possible to prevent the occupant from feeling uncomfortable due to a sudden change caused by an increase in the amount immediately after the decrease at the start of the blower control to the rear seat side.

Further, according to the sixth aspect of the invention, similarly, when the rear vent control means starts the control of blowing air to the rear seat side, the blower air volume is gradually corrected over a predetermined period of time.
Similar to the fifth aspect of the invention, it is possible to prevent the amount of air blown to the front seat side from largely fluctuating in a hunting manner at the start of the air blow control to the rear seat side.

According to the seventh aspect of the invention, the correction of the blower air volume is started with a delay of a predetermined time at the start of the air blowing control to the rear seat side by the rear vent control means, and the correction is gradually performed after the start. As a result, large fluctuations in the amount of air blown to the front seat side can be more effectively avoided.

According to the eighth invention, on the other hand, in the sixth or seventh invention, when the blower air volume is corrected over a predetermined time, the change due to the air volume correction changes linearly with time. According to the ninth invention,
The change due to the correction of the blower air flow is performed stepwise with the lapse of time, so that the operation of the sixth invention or the seventh invention is surely obtained.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

First, the overall configuration of the air conditioner 1 according to the present embodiment will be described with reference to FIG. 1. The main duct 10 which constitutes the main body of the air conditioner has an air intake port 12 having an intake damper 11 at one end side. With
A vent duct 13 and a defroster duct 14 are provided on the other end side.
And a heat duct 15 are provided. A main blower 16 that takes in air from the intake port 12 into the main duct 10 to generate conditioned air is disposed inside the air intake port 12, and the main blower 16 in the main duct 10 is also provided. On the downstream side,
An evaporator 17 for cooling the conditioned air generated by the blower 16 is provided, and a heater core 19 for heating the conditioned air is provided in the mixing chamber 18 on the downstream side thereof.

A mixing damper 20 is provided in front of the heater core 19, and when the damper 20 covers the front surface of the heater core 19 as shown by the solid line in the figure, it passes through the evaporator 17 and enters the mixing chamber 18. The introduced conditioned air is mainly guided to the vent duct 13 side, and is supplied to each part of the front seat from the vent outlets 22 ... 22 at the tip of the duct 13 according to the opening degree of the vent damper 21 provided in the duct 13. It is supposed to be done.

When the mixing damper 20 opens the front surface of the heater core 19 as shown by the chain line in the figure, the conditioned air introduced into the mixing chamber 18 passes through the heater core 19 and the defroster duct 14 and the heat duct. When the defroster damper 23 provided on the inlet side of the defroster duct 14 is open, the defroster blowout port 24 at the tip of the duct 14 is guided to the 15 side.
24 is supplied to each part of the front seat, and the heat duct 15
According to the opening degree of the heat damper 25 provided at the inlet of the vehicle, the heat is blown out from the heat outlets 26 ... 26 to each part of the front seat.

In addition to the above-described air conditioning air supply system for the front seats, the air conditioning system 1 is also provided with an air conditioning air supply system for the rear seats.

That is, the rear vent duct 31 is branched from the portion directly downstream of the evaporator 17 in the mixing chamber 18 to be guided to the rear seat side, and the rear vent damper 32 is provided at the inlet portion of the rear vent duct 31. Auxiliary blowers 33 are provided in the middle portions, respectively, and the conditioned air cooled by the evaporator 17 is rear vent at the tip of the rear vent duct 31 according to the opening degree of the rear vent damper 32 and the rotation amount of the auxiliary blower 33. Outlet 3
It will be supplied to the rear seats from 4.

A rear heat duct 35 is connected to the heat duct 15, and when the heated air is supplied to the front seats from the heat outlets 26 ... 26 by the heat duct 15, the rear heat duct 35 is provided. The heated air-conditioning air is also supplied to the rear seats from the rear heat outlets 36 ... 36 at the tip of 35.

On the other hand, as shown in FIG. 2, the air conditioner 1 has a control unit 41 for controlling the air conditioner 1, and the control unit 41 includes various switches provided on the operation panel in the front seat. Air conditioning operation member 4
2 and the rear vent switch 43 provided in the rear seat are connected. The operation of the air conditioner operation member 42 of the operation panel controls the operation of the main blower 16 and the like via the control unit 41, and the dampers 11 and 2 via the actuators 44 ... 44.
Opening / closing control of 0, 21, 23, 25 is performed, and the temperature, the air volume, the blowing mode, etc. of the conditioned air are set. Further, by operating the rear vent switch 43, the opening of the rear vent damper 32 and the rotation speed of the auxiliary blower 33 are controlled through the control unit 41, and the rear vent duct 31 shown in FIG. The air volume of the rear vent wind is set.

Here, the total air volume of the conditioned air is determined by the number of revolutions of the main blower 16, and since this number of revolutions is determined by the voltage of the power source of the blower 16, the total air volume of the conditioned air, that is, the blower air amount is Blower 1
It will be variably controlled by controlling the voltage of 6. Further, the rear vent switch 43 has a signal value N
Of 0 to 3 are output, where N = 0 indicates that the switch 43 is in the OFF state, and N =
1 to 3 are rear vent dampers 3 as the value increases.
2 shows that the opening degree of 2 and the rotation speed of the auxiliary blower 33 are increased, and the rear vent air volume is increased.

Next, among the air conditioning control by the control unit 41, the control when the supply of the rear vent air to the rear seats is started or the air flow rate thereof is changed by operating the rear vent switch 43 will be described. It will be described in accordance with the flowchart of.

First, in step S1, the voltage of the main blower 16 according to the temperature and the air volume of the conditioned air set by the air conditioning operation member 42 provided on the operation panel of the front seat,
That is, the basic main blower voltage V0 is calculated, and in step S2, the value of the signal value N of the rear vent switch 43 is input, and in step S3, this signal value N is changed from 0 to 1,
It is determined whether or not the value has changed to a value of 2 or 3. If the signal value N has changed, the counter for measuring the elapsed time from the change point is reset in step S4 (counter value C = 0).

Next, at step S5, the current signal value N
Is 0, that is, whether or not the rear vent switch is OFF, and when it is OFF or OFF, the main blower voltage V is set to the above-mentioned basic main blower voltage in step S6. Set to V0 and output to the main blower 16. As a result, when the rear vent air is not being supplied, the conditioned air having the air volume set by the air conditioning operation member 42 of the operation panel is supplied to the front seats, and the signal value N of the rear vent switch 43 is supplied. This state is held while is zero.

On the other hand, if the signal value N of the rear vent switch 43 changes from 0 to 1, 2, or 3, that is, if the switch 43 is switched from OFF to ON, then After the counter is reset in step S4 (C = 0), steps S5 to S7 are executed to correct the correction amount ΔV of the main blower voltage V.
Is determined on the basis of a preset map as shown in FIG.

In this case, this map is set so that the correction amount ΔV decreases as the basic main blower voltage V0 increases. In other words, this correction is to suppress the change in the amount of air blown to the front seat side due to the change in the amount of air blown when the supply of rear vent air is started or when the amount of air blow changes. When the amount of air blown to the front seats is large, the amount of air sent to the front seats is not greatly affected even if the supply of rear vent air is started or the amount of air changes When the supply of the rear vent air is started or the amount of air blown changes with a small amount of airflow, the amount of air blown to the front seat side fluctuates greatly. Therefore, as described above, the higher the basic main blower voltage V0, the smaller the correction amount ΔV, so that the fluctuation of the air blowing amount to the front seat side is always effectively suppressed. Further, in the above map, the larger the signal value N of the rear vent switch 43 is, the larger the correction amount ΔV is set. However, the larger the rear vent air flow is, the more the air flow amount to the front seat side is significantly reduced. This is to deal with becoming.

When the correction amount ΔV is determined as described above, next, in step S8, it is determined whether or not the counter value C has become equal to the target value C0, in other words, the time when the signal value N changes. It is determined whether or not the predetermined time T has elapsed from the above, and until the time elapses, the main blower voltage V is calculated in accordance with the following equation (1) in step S9, and step S1
At 0, 1 is added to the counter value C, and when the predetermined time T has elapsed, the main blower voltage V is determined to be the value obtained by adding the correction amount ΔV to the basic main blower voltage V0.

V = V0 + ΔV × (C / C0) (1) As a result, as shown in FIG. 5, the rear vent switch 4
When 3 is switched from OFF to ON and the supply of the rear vent air is started, the main blower voltage V is corrected to a value obtained by adding the correction amount ΔV to the basic main blower voltage V0 over a predetermined time T. , The decrease in the amount of air blown to the front seat side due to the start of the supply of rear vent air is offset,
In particular, it is possible to prevent the occupant from feeling uncomfortable due to a sudden change in the amount of air blown to the front seat, as in the case where the correction amounts ΔV indicated by symbols a and b are added all at once.

The signal value N of the rear vent switch 43
Is changed between 1, 2 and 3, that is, the switch 4
If the air flow rate is switched while 3 is ON,
Since the counter is not reset in step S4 of the flowchart of FIG. 3 and the state is C = C0, the steps S5 to S7 and S8 are followed by step S1.
1 is immediately executed, and the correction amount ΔV in that case is determined by the signal value N switched in step S7.
It becomes the size read from the map of FIG. 4 according to the value of.

That is, as indicated by symbols C and D in FIG.
For example, assuming that the signal value N is switched from 1 to 2, the correction value ΔV is switched from the correction amount ΔV1 when the signal value N is 1 to the correction amount ΔV2 when the signal value N is 2 shown in FIG. Will be done. In this case, this change is performed immediately after the signal value N of the rear vent switch 43 is changed because the change width of the rear vent air flow is small and the problem of hunting of the air flow to the front seat is small. Similar to the case where 43 is switched from OFF to ON, the correction amount ΔV may be changed over a predetermined time T ′ as indicated by the symbol E in the figure.

Further, in the above embodiment, when the rear vent switch 43 is switched from OFF to ON, the main blower voltage V is corrected by taking a predetermined time T. However, as shown in FIG. When the switch 43 is switched from OFF to ON, the correction may be performed by delaying for a predetermined time T1, or as shown in FIG. 7, after delaying for a predetermined time T2, further taking a predetermined time T3. This may be corrected, and by doing so, it is possible to effectively suppress fluctuations in the amount of air blown to the front seats at the start of supply of rear vent air.

Further, when the main blower voltage V is corrected over a predetermined time T, T3, the voltage V may be linearly changed by the correction amount ΔV as shown in FIGS. 5 and 7. As shown in FIG. 8, it may be changed in steps.

[0045]

As described above, according to the present invention, in the air conditioner capable of supplying the conditioned air generated by the blower to the front seats and the rear seats, the air blown to the rear seats is performed while the blower is operating. When the operation to start is performed or the operation to increase the amount of air blown to the rear seats is performed, the air volume of the conditioned air generated by the blower is corrected. It is possible to offset the decrease in the amount of air blown to the front seats due to the start of air blow to the front seats. As a result, fluctuations in the amount of air blown to the front seats when the air blown state to the rear seats is switched are suppressed, and it becomes possible to always stably blow air to the front seats. Will improve the quality of.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a control system diagram of the air conditioner.

FIG. 3 is a flowchart showing a control operation of the air conditioner.

FIG. 4 is a map used in the control operation.

FIG. 5 is a time chart showing the control operation.

FIG. 6 is a time chart showing another control operation of the air conditioner.

FIG. 7 is a time chart diagram showing still another control operation of the air conditioner.

FIG. 8 is a time chart showing a control operation obtained by partially modifying the control operation shown in FIGS. 5 and 7.

[Explanation of symbols]

16 Main blower 13, 14, 15 Front seat duct 31, 35 Rear seat duct 32, 33 Rear vent control means (rear vent duct, auxiliary blower) 41 Blower air volume correction means 43 Manual operation means (rear vent switch)

Claims (9)

[Claims] 1. A rear vent control means is provided which has ducts for supplying conditioned air generated by a blower to a front seat and a rear seat, respectively, and a rear seat duct which controls blowing of conditioned air to the rear seat side. And an air conditioning control device for a vehicle equipped with a manual operation means for manually operating the control means, wherein when the rear vent control means is operated by the manual operation means while the blower is operating, An air conditioning control device for a vehicle, comprising: a blower air volume correction means for correcting the air volume of the air conditioning air produced by the blower. 2. The rear vent control means is configured to variably control the amount of air blown to the rear seat side in accordance with the operation of the manual operation means, and the blower air flow correction means is the rear vent control means. The air conditioning control device for a vehicle according to claim 1, wherein the blower air flow rate is corrected in accordance with the air flow rate to the rear seat side controlled by. 3. The rear vent control means is one or both of an auxiliary blower and a damper provided in the rear seat duct, wherein the rear vent control means is either one or both.
The vehicle air-conditioning control device described in 1. 4. The air conditioning control for a vehicle according to claim 1, wherein the blower air volume correction means is configured to make the correction amount smaller when the blower air volume is large than when it is small. apparatus. 5. The blower air volume correction means is configured to delay the predetermined amount of time and start the correction of the blower air volume when the rear vent control means starts blowing control to the rear seat side. The vehicle air conditioning control device according to claim 1 or 2. 6. The blower air flow rate correction means is configured to change the blower air flow rate to a correction target value over a predetermined time when the rear vent control means starts blowing control to the rear seat side. The air conditioning control device for a vehicle according to claim 1 or 2. 7. The blower air flow rate correction means delays the blower air flow rate by a predetermined time when the rear vent control means starts the air flow control to the rear seat side, and thereafter,
The vehicle air conditioning control device according to claim 1 or 2, wherein the air conditioning control device is configured to change to a correction target value over a predetermined time. 8. The blower air flow rate correction means is configured to linearly change the blower air flow rate when changing the blower air flow rate to a correction target value over a predetermined time. The vehicle air conditioning control device according to claim 6 or 7. 9. The blower air flow rate correction means is configured to change the blower air flow rate in steps over time when the blower air flow rate is changed to a correction target value over a predetermined time. The vehicle air conditioning control device according to claim 6 or 7.