JPH062446B2 - Car air conditioner controller - Google Patents

Description

Description: [Industrial field of use] The present invention relates to an outlet control device for a vehicle air conditioner that performs independent air conditioning for front and rear seats.

[Conventional technology]

When the front and rear seats are independently air-conditioned, the signals from the temperature setters provided at the front and rear seats, room temperature sensor, outside temperature sensor,
It has been proposed to calculate the required blowout temperature of each of the front and rear seats from the signal of the solar radiation sensor and determine the blowout mode of each of the front and rear seats according to the value.

[Problems to be Solved by the Invention]

For example, considering front and rear independent air conditioning, if the front seat air conditioner is set to the upper outlet and the rear seat temperature setting is changed, the rear seat air conditioner will be It may become the lower outlet.

In this case, since there is no upward wind from the rear seat air conditioner,
The wind of the air conditioner for the front seats may circulate to the rear seats and affect the air conditioning of the rear seats, so that the target air conditioning state of the rear seat temperature setter may be greatly deviated, and the air conditioner of the front seat temperature setter may approach.

[Means for Solving the Problems]

Therefore, in order to determine the above-mentioned problems, the present invention provides a car air conditioner control device having a configuration capable of independently adjusting the temperature, in which at least an upward blower for supplying temperature-controlled air toward a front seat in a vehicle compartment. A front seat air conditioner including an outlet and a lower outlet, a front seat temperature setting device that sets the temperature of the front seat air conditioner, a sensor that detects an environmental condition of the vehicle, the front seat setting device and the Front seat outlet determination means for determining an outlet mode from the outlet of the front seat air conditioner based on a signal from a sensor, and the front seat air conditioner operated by a signal from the front seat outlet determination means. For the rear seats including the front seat outlet switching door for opening and closing the upper and lower outlets, and at least the upper and lower outlets for supplying temperature-controlled air to the rear seats in the vehicle compartment Set the temperature of the air conditioner and the temperature of the rear seat air conditioner. A rear seat temperature setting device, a rear seat outlet determining means for determining an outlet mode from an outlet of the rear seat air conditioner based on signals from the rear seat setting device and the sensor, and the rear seat outlet A rear seat outlet switching door that operates according to a signal from the determination means to open and close the upper outlet and the lower outlet of the rear seat air conditioner, and an outlet mode from the outlet of the front seat air conditioner At the outlet, if the outlet mode of the rear air conditioner is the lower outlet, the rear seat outlet switching door is driven to change the outlet mode of the rear seat air conditioner to both upper and lower sides. The technical means of including the control means for changing to the exit mode is adopted.

[Action]

According to the configuration of the present invention, for example, when the temperature in summer is high, the cooling load in the passenger compartment is also high, and the blowing modes of the front and rear seat air conditioners are determined by the front seat outlet determination means and the rear seat outlet determination means. , And each is determined to be an upper outlet.

From this result, a signal from the front seat outlet determination means and the rear seat outlet determination means is received, and the front seat outlet switching door and the rear seat outlet switching door are actuated to operate the front and rear seat air conditioners. The outlet mode of is the upper outlet.

At this time, when the setting of the rear seat temperature setting device is changed to the high temperature side, the rear seat air outlet determination means determines that the blowing mode of the rear seat air conditioner should be changed to the lower outlet.

However, in the present invention, in such a case, the means for changing the blowing mode to the upper and lower outlets is used to drive the rear seat outlet switching door to change the blowing mode from the rear air conditioner outlet to the upper and lower outlets. Control to change to exit mode.

〔The invention's effect〕

As described above, according to the present invention, when the air outlet mode of the front seat air conditioner is the upper outlet and the air outlet mode of the rear seat air conditioner is the lower outlet, the air outlet mode of the rear seat air conditioner is selected. By blowing both the upper and lower sides, the front seats are frequently used in the summer (VENT) and the rear seats are frequently used in the winter (H
EAT).

As a result, the air conditioning of the rear seats can reduce the wind from the air conditioner for the front seats going around to the rear seats, and the air conditioning of the rear seat temperature setting device can be achieved. It will be possible.

〔Example〕

FIG. 1 shows an embodiment of the present invention. In a front seat air conditioner FAC, a blower 9a, a temperature control door 13a, an outlet switching door 14a and an undesignated cooling / cooling unit are provided downstream of an inside / outside air switching door. A heat exchanger is arranged. On the other hand, the rear seat air conditioner R
AC has a blower 9b, a temperature control door 13b, an outlet switching door 14b, and the like arranged downstream of the inside air intake. 10
a and 10b are blower drive circuits, 11a and 11b are door drive motors, and 12a and 12b are drive circuits thereof, 15a and 1b.
5b is a door drive motor, and 16a and 16b are drive circuits thereof. Each drive circuit energizes each element to be driven by a drive amount determined by the ECU according to a control output of an electric control circuit (ECU) including a microcomputer.

1a and 1b are room temperature sensors for front and rear seats, 2 is an outside air temperature sensor, 3a and 3b are solar sensors for front and rear seats, 4 is a sensor for engine cooling water temperature which is a heat medium of a heat exchanger, and 5
Is a sensor of the temperature directly downstream of the heat exchangers of the front and rear seat air conditioners, which detects the environmental conditions of the vehicle.

6a and 6b are temperature setting devices for the front and rear seats, 7a and 7b are air volume setting devices for the front and rear seats, and 8a and 8b are manual setting devices for the blowing modes for the front and rear seats. The signals generated by these sensors and setting devices are input to the ECU and used to determine the drive amount of each of the drive target elements.

FIG. 2 shows a control program of the ECU.

In step 101, signals from the sensors and switches 1 to 8 are read. Next, in step 102, step 1
Each air conditioner FAC, RA from the sensor value read in 01
The required outlet temperature T _AO is calculated for each C by the following formula.

T _AO = K _set × T _set −K _r × T _r −K _am T _am −K _s · T _s + C where K _set , K _r , K _am , K _s , and C are predetermined values, T _set value (set temperature) inputted from the temperature setter, _{T r} is at room _{temperature, T am} is the outside air temperature, _{T s} is the amount of solar radiation.

Next, the routine proceeds to step 103, where the air mix door opening is calculated from the required blowout temperature obtained at step 102, and the control output is sent to the air mix door drive circuits 12a and 12b. Here, the air mix door opening degree SW is calculated by the following equation.

_{SW = (T AO -T E)} / (T W -T E -D) × 100 (%) However, _{T E} is air temperature, _{T W} is the water temperature, a constant value D is set in advance.

Next, in step 104, the air volume is calculated.

Details of step 104 are shown in FIG. First, it is determined whether or not the states of the air volume setting devices 7a and 7b are in the automatic mode (AUTO), and in the case of the manual mode, the air volume setting devices 7a and 7b are
Step 10 to obtain the air volume required by the occupant by 7b
Proceed to step 5 to output the air volume signal. When the air flow rate setters 7a and 7b are in the AUTO mode, step 105 is performed in accordance with the air flow rate pattern that is predetermined corresponding to the required outlet temperature T _AO.
To output the air volume signal.

Next, in step 107, the blowout mode of the front seat air conditioner is determined. Details of this are shown in FIG. First, the state of the front seat mode setting device 8a is determined, and in the case of the manual mode, which mode is determined in steps 119 to 121, the process proceeds to any one of steps 108 to 110, 122, and the blowing set by the occupant is performed. A signal corresponding to the mode is output to the drive circuit 16a of the drive motor 15a of the front seat outlet switching door. In addition, the mode setter 8a is AUTO
If it is the mode, the process proceeds to step 118 and step 102.
In accordance with the blowout mode switching pattern that is predetermined according to the required blowout temperature T _AO obtained in
Either B / L or HEAT is determined, and the process proceeds to steps 108 to 110 to output the mode signal so that the mode corresponding to that is determined. As can be seen from the above description, in this embodiment, step 107, more specifically step 117
A front seat outlet determination unit is constituted by ~ 121.

Next, in step 111, the blowout mode of the rear seat air conditioner is determined. The details are shown in FIG. First, the state of the rear seat mode setting device 8b is determined, and in the case of the manual mode, which mode is determined in steps 125 to 127, and the process proceeds to any one of steps 113 to 115 and 128 and the blowing mode set by the occupant. To the drive circuit 16b of the drive motor 15b for the rear seat outlet switching door. Also, the mode setter 8b is AUTO
If it is the mode, the process proceeds to step 124 and step 102.
In the case of B / L and VENT, the process proceeds to steps 114 and 115, respectively, to output the mode signal in accordance with the blowout mode switching pattern determined in advance according to the required blowout temperature T _AO obtained in step. As can be seen from the above description, in this embodiment, step 111, more specifically step 123-
The rear seat outlet determination unit 127 is formed.

Then, when it is determined that the mode is the HEAT mode, the process proceeds to step 112, and it is determined whether the air outlet of the front seat air conditioner is VENT. And the outlet of the air conditioner for the front seat is VEN
If it is T, go to step 114 and select B / L for the rear seat air conditioner.
The signal of is output. In addition, the outlet of the air conditioner for the front seat is VE
If it is other than NT, the routine proceeds to step 113, where a HEAT mode signal is output to the rear seat air conditioner.

As can be seen from the above description, in the present embodiment, step 1
Control means for changing the outlet mode of the rear seat air outlet to the upper and lower outlet ports mode when the outlet mode of the front seat air conditioner is the upper outlet port and the outlet mode of the rear seat air conditioner is the lower outlet port according to 12 Is configured.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention, FIG. 2 is a flow chart showing an outline of a control program of an electric control circuit (ECU) shown in FIG. 1, FIG. 3, FIG. 4, and FIG. The figure is a flow chart showing the details of each part of the control program shown in FIG. FAC ... air conditioner for front seats, RAC ... air conditioner for rear seats, 14
a, 14b ... Outlet switching door.

Claims (1)

[Claims] 1. A car air conditioner control device having a structure in which the temperature can be adjusted independently in the front and rear, and at least an upper air outlet and a lower air outlet for supplying temperature-adjusted air toward a front seat in a vehicle compartment. A front seat air conditioner including, a front seat temperature setting device for setting the temperature of the front seat air conditioner, a sensor for detecting an environmental condition of the vehicle, the front seat setting device and the sensor based on the signal of the sensor Front seat outlet determination means for determining the outlet mode of the front air conditioner and a signal from the front seat outlet determination means for operating the upper and lower outlets of the front air conditioner. A front-seat air outlet switching door that opens and closes an outlet, a rear-seat air conditioner including at least an upper air outlet and a lower air outlet that supplies temperature-controlled air to the rear seats in the vehicle compartment, and the rear seat A rear seat temperature setting device that sets the temperature of the air conditioner for Rear seat outlet determination means for determining an outlet mode from the outlet of the rear seat air conditioner based on signals of the seat setting device and the sensor, and operated by a signal from the rear seat outlet determination means, A rear seat outlet switching door that opens and closes the upper and lower outlets of the rear seat air conditioner, and the outlet mode of the front seat air conditioner is an upper outlet, and the rear seat air conditioner is Control means for driving the rear seat outlet switching door to change the outlet mode of the rear seat air conditioner to the upper and lower outlet modes when the outlet mode of the rear outlet is the lower outlet. Car air conditioner control device.