JP3405071B2 - Vehicle air conditioner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner capable of independently controlling outlet temperatures from two or more outlets.

[0002]

2. Description of the Related Art There is known a vehicle air conditioner capable of independently controlling air conditioning of a front portion and a rear portion of a vehicle (for example, Japanese Patent Laid-Open No. 63-173713). However, there is no point in performing independent control when the occupant is not seated other than in the driver's seat, and in some cases the occupant in the driver's seat may not feel comfortable.

An object of the present invention is to provide an air conditioning system for a vehicle, which can switch between independent control and normal control, and which makes it easy to know whether or not the independent control is being performed.

[0004]

FIG. 1 showing an embodiment.
In the vehicle air conditioner according to the present invention, the input means 51DR and 51AS capable of independently inputting the first and second set temperatures and the air from the first and second outlets are described. First and second for adjusting the blowout temperature respectively
When the blowout temperature adjusting means 61DR and 61AS and the independent control command are present, the first blowout temperature adjusting means 61DR is controlled based on the first set temperature and the second blowout temperature is set based on the second set temperature. When the temperature control means 61AS is controlled and there is no independent control command, the first and second setting temperatures are determined based on the reference setting temperature determined by the first and second setting temperatures.
The blowout temperature control means of the
The second set temperature is changed from the input means 51AS even when
If it is, the second blowing is performed based on the second set temperature.
It is provided with a control means 35 for controlling the temperature control means 61AS, a display means 60 for displaying the air conditioning control content, and a display switching means 35 for switching the display content of the display means 60 according to the presence or absence of an independent control command. The invention of claim 2 is to display the first and second set temperature on the display means when there is an independent control command, when there is no independent control command the second set
The standard set temperature is displayed until the constant temperature is changed, and the second
When the set temperature of is changed, the first and second set temperatures are displayed. According to the third aspect of the invention, the first outlet is the driver side outlet and the second outlet is the passenger side outlet. In the invention of claim 4, the reference set temperature is the first set temperature.

[0005]

According to the present invention, in a vehicle air conditioner capable of independently controlling blowout temperatures from two or more outlets,
Independent control and normal control can be switched, and the display contents of the display section can be switched according to the presence or absence of independent control.
The occupant can easily understand which control is currently being performed. Therefore, when unnecessary independent control is performed, it is possible to switch to normal control, and it is possible to create an air conditioning environment that the occupant prefers. Especially, in the case of independent control, if each set temperature is displayed, and in the case of normal control, only the reference set temperature is displayed, it is possible to easily grasp whether or not the control is independent. If the first outlet is the driver's seat side outlet and the second outlet is the passenger's seat side outlet, left and right independent control is possible on the driver's side and the passenger's side.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram of a vehicle air conditioner according to the present invention.
1, a blower fan 12, an evaporator 13 and a heater core 14 are provided. The evaporator 13 constitutes a part of a well-known refrigeration cycle, and performs heat exchange between the refrigerant and the air pumped by the compressor to cool the air. Reference numeral 15 is an intake door for setting the introduction ratio of outside air and inside air.

The air conditioner of the present embodiment has left and right independent control,
That is, the driver's seat side and the passenger's seat side can be controlled independently of each other. Therefore, the inside of the air conditioning duct 10 is located immediately downstream of the evaporator 13 from the driver's seat side space 10
It is partitioned into the DR and the passenger side space 10AS. Air mix door 16DR in space 10DR, 10AS,
16AS, vent outlets 17DR, 17AS, foot outlets 18DR, 18AS, defroster outlet 19DR,
19AS and mode doors 20DR, 21DR, 22DR for adjusting the amount of air blown out from each air outlet: 20AS, 21A
S and 22AS are provided respectively.

When the blower fan 12 is driven, the outside air or the inside air is introduced into the air conditioning duct 10 through the air introduction port 11 and is cooled by the evaporator 13 and then each space 10 is cooled.
Guided by DR, 10AS. Each space 10DR, 10AS
The air guided to each is the air mix door 16D
The heater core 14 passes through the heater core 14 by an amount corresponding to the opening degree of R and 16AS, and the rest bypasses the heater core 14 and is mixed again. As a result, the temperature-controlled air is blown out into the vehicle compartment from each air outlet. Outlet 17DR, 18DR, 19D
The air from R is blown to the driver's seat side, and the air outlet 17AS,
Air from 18AS and 19AS is blown to the passenger side.

Reference numeral 31 is an intake door actuator for driving an intake door, 32 is a power transistor for driving a blower fan, 33DR, 33AS are air mix door actuators for driving the air mix doors 16DR, 16AS, and 34 is a mode door drive. Mode door actuators, which are connected to the control circuit 35.

The control circuit 35 also includes an indoor temperature sensor 41 for detecting a vehicle interior temperature, an outside air temperature sensor 42 for detecting an outside air temperature, and a solar radiation sensor 43D for detecting a driver's side solar radiation amount.
R, a solar radiation sensor 43AS for detecting the solar radiation amount on the passenger seat side is connected. The indoor temperature sensor 41 is provided near the driver's seat in the vehicle interior.

Reference numeral 50 denotes various operating members 50 provided in the driver's cab, and a driver's seat side preset temperature dial 51DR for adjusting the driver's seat side preset temperature and an assistant for adjusting the passenger's seat side preset temperature. Seat side temperature setting dial 51AS,
A left / right independent switch 52 and the like for instructing whether or not to perform left / right independent control is included. The driver side set temperature dial 51DR is arranged on the driver side so that it can be easily operated from the driver side, and the passenger side set temperature dial 51AS is arranged on the passenger side so that it can be easily operated from the driver side.

Reference numeral 60 denotes a display device, which is, for example, a display device for displaying air conditioner-related, audio-related displays, television images, or map information of a navigation device. In the present embodiment, the display device 60 indicates whether left / right independent control is being performed, as will be described later in detail.
Is displayed in.

The operation of the air conditioner configured as above will be described. (1) Normal control When the left and right independent control is not commanded, the control circuit 35 controls the driver side set temperature set by the driver side set temperature dial 51DR, the indoor temperature sensor 41, and the outside air temperature sensor 4.
2. Based on the detection output (vehicle heat load) of the solar radiation sensors 43DR, 43AS, etc., the driver's seat side and the passenger's seat side air mix door opening are controlled to be the same. As a result, the air whose temperature is adjusted according to the opening of the air mix door on the driver's side is blown out from the outlet on the driver's side, and the air whose temperature is adjusted according to the opening of the air mix door on the passenger's side is transferred to the passenger's side. It is blown out from the outlet. However, since the driver seat side and the passenger seat side have the same air mix door opening degree, the blowout temperature is also the same.

(2) Left / Right Independent Control When the left / right independent control is commanded, the control circuit 35 causes the driver's seat side air to be set according to the driver's seat side preset temperature set by the driver's seat side preset temperature dial 51DR and the vehicle heat load. The opening degree of the mix door is controlled, and the opening degree of the passenger side air mix door is controlled according to the passenger side set temperature and the vehicle heat load set by the passenger side set temperature dial 51AS. As a result, the air whose temperature is adjusted according to the opening of the air mix door on the driver's side is blown out from the outlet on the driver's side, and the air whose temperature is adjusted according to the opening of the air mix door on the passenger's side is blown on the passenger's side. It is blown out from the exit. Since the opening degree of the air mix door is controlled independently, when the driver's seat side preset temperature and the passenger's seat side preset temperature are different, the blowout temperature is also different on the driver's seat side and the passenger's seat side.

The presence / absence of the above left / right independent control command is determined by turning on / off the left / right independent flag. FIG. 2 shows ON / OFF control of the left and right independent flags executed by the control circuit 35, which is periodically called from a main program (not shown). In FIG. 2, it is determined in step S1 whether or not the defroster mode is set, and if it is set, the left / right independent flag is turned off in step S7. That is, since the defroster mode is intended to remove window fogging, the left and right independent controls are not performed to ensure the same window clarity on the driver's side and the passenger's side.

If the defroster mode is not set, the process proceeds to step S2, and the current state of the left and right independent flags is determined. If the left / right independent flag is on, the process proceeds to step S3, and it is determined whether or not the left / right independent switch 52 is operated.
If the switch 52 is not operated, that is, if the off state continues, the process proceeds to step S4, the left / right independent switch flag is turned on, and the right / left independent flag is turned on in step S5 to return. If the left and right independent switches 52 are operated, that is, if they are turned on from off, then step S
6, the left / right independent switch flag is turned off, the right / left independent flag is turned off in step S7, and the process returns.

When it is determined in step S2 that the left / right independent flag is off, the process proceeds to step S8, and the left / right independent switch 52 is operated.
The presence or absence of the operation of is determined. If the switch 52 has been operated, the process proceeds to step S4, and if not, the process proceeds to step S9. In step S9, it is determined whether or not the passenger seat side set temperature is changed, that is, the passenger seat side temperature setting dial 51.
It is determined whether or not the AS has been operated. If the result is affirmative, the process proceeds to step S4, and if the result is negative, the process proceeds to step S6.

As described above, in this embodiment, the left / right independent control is switched to the normal control each time the left / right independent switch 52 is operated. In addition, the passenger side temperature setting dial 51A
When the passenger's seat side set temperature is changed by the operation of S, it is determined that there is a left-right independent intention, and the left-right independent control is performed regardless of the operation of the left-right independent switch 52.

FIG. 3 is a flow chart showing the display control, which is also called periodically from the main program. In step S11, it is determined whether the left / right independent flag is on or off. If it is on, the process proceeds to step S12 to display the left / right independent control on the screen of the display device 60.
For example, as shown in FIG. 4, the driver side set temperature (4
5.5 ° C.) and the passenger side set temperature (23 ° C.) may be displayed. On the other hand, if the left and right independent flags are off, the process proceeds to step S13, and normal control display is performed. For this, for example, as shown in FIG. 5, only the driver's seat side preset temperature may be displayed.

As described above, in the present embodiment, the display contents are switched by the left / right independent control or the normal control, so that the occupant can easily grasp which control is currently being performed. For example, if the screen shown in Fig. 4 is displayed when there is no passenger other than the driver,
The driver can immediately recognize that unnecessary left / right independent control is being performed, and can operate the left / right independent switch 52 to switch to normal control. This makes it possible to create an air conditioning environment that the driver likes.

In the configuration of the above embodiment, the driver side and passenger side temperature setting dials 51DR, 51AS.
Is the input means, the driver's seat side and passenger side air mix doors 16DR, 16AS are the first and second outlet temperature adjusting means, the display device 60 is the display means, and the control circuit 35 is the control means and the display switching means 35. Respectively.

The independent control display and the normal control display are not limited to those shown in FIGS. 4 and 5, and a mark indicating the independent control may be turned on / off on the screen of the display device 60, for example. Alternatively, a simple lamp may be used as the display means, and the lamp may be turned on / off to display the presence or absence of the independent control. Further, although the left and right independent control has been described, the present invention can be similarly applied to the case where the front seat side and the rear seat side in the vehicle compartment are independently controlled.

[Brief description of drawings]

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

FIG. 2 is a flowchart showing on / off control of left and right independent flags.

FIG. 3 is a flowchart showing display control.

FIG. 4 is a diagram showing an example of display contents during left-right independent control.

FIG. 5 is a diagram showing an example of display contents during normal control.

[Explanation of symbols]

10 Air Conditioning Duct 11 Air Inlet 12 Blower Fan 13 Evaporator 14 Heater Core 16DR, 16AS Air Mix Door 17DR, 17AS, 18DR, 18AS, 19DR,
19AS Air outlet 33DR, 33AS Air mix door actuator 35 Control circuit 41 Indoor temperature sensor 42 Outdoor air temperature sensor 43DR, 43AS Solar radiation sensor 51DR, 51AS Temperature setting dial 52 Left and right independent switch 60 Display device

Claims (4)

(57) [Claims] 1. The first and second preset temperatures are independently input
Possible input means, The temperature of the air blown out from the first and second air outlets is adjusted respectively.
First and second outlet temperature adjusting means for adjusting the temperature, When there is an independent control command, the first set temperature
Based on the control of the first outlet temperature adjusting means based on
And the second outlet temperature based on the second set temperature.
Control the adjusting means, When there is no independent control command, the first and the first
The first set based on the reference set temperature determined by the second set temperature.
And the second outlet temperature adjusting means are controlled in the same manner,Said German
Even when there is no stand-up control command, the second means is operated from the input means.
When the set temperature is changed, the second set temperature is used as the basis.
Based on this, the second outlet temperature adjusting means is controlled.Control means
When, Display means for displaying the contents of the air conditioning control, In the display of the display means according to the presence or absence of the independent control command
Display switching means for switching the volume.
A vehicle air conditioner. Wherein said display switching means, the independent control when the command is displays the first and second set temperature on the display unit, wherein when there is no the independent control command
The reference set temperature is displayed until the second set temperature is changed, and when the second set temperature is changed, the first set temperature is displayed .
The vehicle air conditioner according to claim 1, wherein the second set temperature is displayed. 3. The first outlet is a driver-side outlet that blows air toward the driver's seat in the passenger compartment, and the second outlet is an assistant that blows air toward the passenger's seat in the passenger compartment. The vehicle air conditioner according to claim 1 or 2, which is a seat side outlet. 4. The vehicle air conditioner according to claim 3, wherein the reference set temperature is the first set temperature.