JPH1148740A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the carsickness of an occupant and to prevent the lowering of defogging effect of side window glasses by lowering the air blowing temperature in the case where an air flow from a blowing port provided in an upper part of a side is directed toward occupant at the time of warming and where it is detected. SOLUTION: At the time of FOOT mode, F/D mode or DEF mode, in the case where the hot air from a FACE blowing port 22a provided in a side of a driver's seat is directed to an occupant so as to warm an upper-half body of the occupant, open degree of a cold air bypass door is increased so as to guide the cold air in the just downstream of an evaporator to the FACE blowing port 22a of the side of the driver's seat through a cold air bypass passage. In order to eliminate the fogging of a side window glass, in the case where the hot air from the FACE blowing port 22a of the side of the driver's seat is directed to the side window glass, the cold air bypass passage is closed so that the cold air in the just downstream of the evaporator is not guided to the blowing port 22a of the side of the driver's seat.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle which blows out an airflow at an optimum temperature from a side face outlet formed on a side of an instrument panel.

[0002]

2. Description of the Related Art As a conventional technique, an air passage for supplying air to a center face air outlet and a side face air outlet provided in an instrument panel of a vehicle is provided.
2. Description of the Related Art There is an air conditioner for a vehicle provided with a cool air bypass passage that gives a feeling of cool air to an occupant by directly guiding air cooled by an evaporator of a refrigeration cycle to bypass a heating heat exchanger such as a heater core.

[0003] Here, since the side face outlet can blow airflow in any outlet mode, for example, in the heating mode such as FOOT mode, the hot air blown out from the side face outlet is discharged. By directing to the side window glass, the side face outlet can be used as a side defroster. Further, by directing the warm air blown out from the side face outlet toward the occupant, the head and chest of the occupant can be warmed.

[0004]

However, in the conventional air conditioner for a vehicle, if the cool air bypass passage is opened in, for example, the FOOT mode, the temperature of the hot air blown out from the side face outlet becomes low. Therefore, at this time, there is a problem that the effect of preventing fogging is reduced even if the hot air is directed at the side window glass. On the other hand, for example, FO
In the OT mode, if you close the cool air bypass passage,
The above problem is solved because the temperature of the warm air blown out from the side face outlet increases, but on the other hand, directing the warm air toward the occupant causes another problem that the occupant's face becomes hot and sick. Occurs.

[0005]

An object of the present invention is to pay attention to the fact that the required blowing temperature is different depending on the wind direction of the airflow blown out from the upper side air outlet during heating, and the air flow blown out from the upper side air outlet is considered. The present invention provides a vehicle air conditioner that can prevent the occupant from feeling bad and prevent the fogging prevention effect of the side window glass from lowering by adjusting the blowing temperature to an optimum temperature according to the wind direction of the vehicle. It is in.

[0006]

According to the first aspect of the present invention, when the airflow from the upper side air outlet is detected by the wind direction detecting means to be directed to the occupant during heating, By controlling the bypass door so as to open the bypass passage, the temperature of the air blown out from the upper side air outlet is reduced, and the occupant's mood is suppressed by suppressing the hot flash of the occupant's face. Can be. According to the second aspect of the present invention, by increasing the opening degree of the bypass passage as the airflow from the side upper air outlet faces the occupant, the air blown out from the side upper air outlet is increased. Since the blowing temperature is lowered, it is possible to give the occupant a good feeling of heating due to head and foot heat.

According to the third aspect of the invention, when the airflow from the upper side outlet is detected by the wind direction detecting means to be directed to the side window glass during heating, the bypass passage is opened. By controlling the bypass door so as to close, the temperature of the air blown out from the upper side outlet increases, and the fogging removal effect of the side window glass can be improved. According to the fourth aspect of the present invention, the degree of opening of the bypass passage is reduced as the airflow from the upper side air outlet is directed toward the side window glass, whereby the air is blown out from the upper side air outlet. Because the air blowing temperature is high,
The fogging removal effect of the side window glass can be improved.

According to the invention described in claim 6, by providing a swing louver in the side grill, which swings at least in the horizontal direction to change the wind direction of the airflow from the upper side outlet. The conditioned air can be blown out over a wide range from the side upper outlet. As a result, the temperature in the entire cabin becomes substantially uniform.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 to FIG. 11 show an embodiment of the present invention. FIG. 1 is a diagram showing a cold air bypass opening / closing area with respect to a wind direction from a driver side grille.
FIG. 3 is a diagram showing an overall configuration of the vehicle air conditioner, and FIG. 3 is a diagram showing an instrument panel of the vehicle.

In the air conditioner for a vehicle according to the present embodiment, each air conditioning means (an actuator such as a servomotor) in an air conditioning unit 1 for air conditioning the interior of a vehicle such as an automobile equipped with an engine is connected to an air conditioning controller (hereinafter referred to as an air conditioner). The control is performed by an ECU 50. The air conditioning unit 1 controls the temperature of an air conditioning zone on the front right side of the vehicle (hereinafter referred to as a driver seat) and a temperature of an air conditioning zone on the front left side of the vehicle (hereinafter referred to as a passenger seat) independently of each other. It is an air conditioner unit that can be used.

The air-conditioning unit 1 has an air-conditioning duct 2 arranged in the front of the interior of the vehicle. On the upstream side of the air conditioning duct 2, an inside / outside air switching door 3 and a blower 4 are provided. The inside / outside air switching door 3 is a servo motor 5
This is a suction-port switching means for changing the opening degree of the inside-air suction port 6 that is driven by the inside and sucks the air (inside air) in the vehicle compartment, and the outside-air suction port 7 that suctions the air (outside air) outside the vehicle compartment. The blower 4 is a blower that is driven to rotate by a blower motor 9 controlled by a blower drive circuit 8 and generates an airflow toward the vehicle interior in the air conditioning duct 2.

At the center of the air conditioning duct 2, an air conditioning duct 2
An evaporator (air cooling means) 10 of a refrigeration cycle for cooling air passing through the inside is provided over the entire surface of the air conditioning duct 2. Further, a heater core (air heating means) 13 is provided downstream of the evaporator 10 using an engine cooling water for heating air passing through the first air passage 11 and the second air passage 12 as a heat source.

The first air passage 11 and the second air passage 12 are defined by a partition plate 14, and the heater core 13 is provided through the partition plate 14. Here, the heater core 13 corresponds to the heating heat exchanger of the present invention. On the downstream side of the heater core 13, the driver-side and passenger-side air mix doors 15 for independently controlling the temperature of the driver-side air-conditioning zone and the passenger-side air-conditioning zone in the vehicle cabin, 16 are provided.

The driver-side and passenger-side air mix doors 15 and 16 are driven by servo motors 17 and 18 to determine the amount of air passing through the heater core 13 and the heater core 1.
3 by adjusting the amount of air bypassing the driver's seat,
Adjust the temperature of the air blown out toward the passenger seat.
Here, the heater core 13, the driver side air mix door 1
5 and the passenger side air mix door 16 constitute a temperature variable means.

Downstream of the first air passage 11, a defroster (DEF) outlet 20 for blowing out an air flow (mainly hot air) toward the inner surface of the front window glass, an upper body (head) of an occupant on the driver's seat side. A center face (FACE) outlet (corresponding to a central upper outlet of the present invention) 21a for blowing airflow (mainly cool air) toward the chest), at least a driver's side passenger's side window glass side upper body and Driver-side side face (FACE) outlet for blowing air flow (cold air or hot air) toward one of the inner surfaces of the driver-side side window glass (corresponding to the lateral upper outlet of the present invention) An opening 22a and a driver-side foot (FOOT) outlet 23a for blowing out an airflow (mainly warm air) toward the foot of the driver on the driver side are open. The airflow (mainly hot air) is blown out from the DEF outlet 20 not only toward the inner surface of the front window glass in the driver's seat air conditioning zone but also toward the inner surface of the front window glass in the passenger seat air conditioning zone. .

Further, on the downstream side of the second air passage 12, a passenger side center face (FA) for blowing out an air flow (mainly cold air) toward the upper body (head and chest) of the passenger on the passenger side.
CE) outlet (corresponding to the central upper outlet of the present invention) 2
1b, Passenger side face (FACE) for blowing airflow (cold air or hot air) toward at least one of the side window glass upper body of the passenger on the passenger side and the inner surface of the side window glass on the passenger side An outlet (corresponding to a side upper outlet of the present invention) 22b, and a passenger side foot (FOOT) outlet for blowing out an airflow (mainly warm air) toward the foot of an occupant on the passenger side. 23
b is open.

In the first and second air passages 11 and 12, the driver side and the passenger side side air outlet modes for setting the air outlet mode on the driver side and the passenger side in the passenger compartment are independent of each other. Exit switching doors 24-28 are provided. The driver-side and passenger-side outlet switching doors 24 to 28 correspond to the mode switching door of the present invention, and serve as servomotors 30 to 3.
2 to switch the outlet mode between the driver's seat side and the passenger seat side. Here, as the outlet mode on the driver's seat side and the passenger's seat side, a face (FACE) mode,
Bi-level (B / L) mode, foot (FOOT) mode, foot differential (F / D) mode, defroster (DE
F) mode.

Further, the air conditioning duct 2 includes an evaporator 1
0 or the cool air that has passed through the evaporator 10 is directly bypassed by the heater core 13 to the first and second cool air.
Cool air bypass passages 33 and 34 are provided for guiding the air passages 11 and 12 to downstream portions. This cool air bypass passage 33,
Reference numeral 34 denotes the FACE outlet 21a immediately after the air cooling section of the air conditioning duct 2, the driver side center FACE outlet 21a, and the driver side side FAC.
E outlet 22a, passenger seat side center FACE outlet 21b
It is formed in a cold air bypass duct that connects the passenger seat side FACE outlet 22b.

Cool air bypass doors 35, 36 for opening and closing the cool air bypass passages 33, 34 are provided upstream of the cool air bypass passages 33, 34. The cool air bypass doors 35, 36 are driven by servo motors 37, 38 to adjust the degree of opening of the cool air bypass passages 33, 34. And, the driver seat side center FACE outlet 21a,
An instrument panel (storage member) is provided at the driver side side FACE outlet 22a, the passenger side center FACE outlet 21b, and the passenger side side FACE outlet 22b.
A swing louver device is attached to each of 39.

Next, the swing louver device will be briefly described with reference to FIGS. Here, FIG. 4 is a diagram showing the overall configuration of the swing louver device, FIG. 5 is a diagram showing the configuration of the first louver swinging means on the driver's seat side, and FIG. 6 is a diagram showing the second louver swinging device on the driver's seat side. It is a figure showing composition of a moving means. The first and second louver swing means on the passenger seat side are not shown because they have the same configuration as the driver seat side.

The swing louver device is provided in the driver side center grill 41a, the driver side side grill 42a, the passenger side center grill 41b, and the passenger side side grill 42b, respectively. These grills 41
The air passages in a, 41b, 42a, and 42b are connected to the driver side center FACE outlet 21a and the driver side F side.
ACE outlet 22a, passenger side center FACE outlet 2
1b and the passenger seat side FACE outlet 22b. And those grills 41a, 41b,
The first louver swinging means and the second louver swinging means are provided at 42a and 42b.

The first louver swinging means includes a plurality of first louver fins (hereinafter, referred to as first swing louvers) 43 arranged in a plurality of rows in each grill in a horizontal direction, and the first louver 43 is provided horizontally around a fulcrum. A horizontal displacement made up of a first link lever 44 that swings in a direction (left-right direction) and a first drive motor 45 that reciprocates the first link lever 44 in a horizontal direction via a first arm plate 44a. Means.

The second louver swinging means includes a plurality of vertically arranged second louver fins (hereinafter referred to as second swing louvers) 46 in each grill, and these second swing louvers 46 centered on fulcrums. A second link lever 47 that swings up and down in the vertical direction, and a second arm plate 47
and a second drive motor 48 for reciprocating the second link lever 47 in the up and down direction via a.

The air conditioner ECU 50 corresponds to the air conditioning control means of the present invention, and has a CPU, a ROM, a RAM inside.
A well-known microcomputer is provided, and the sensor signals from each sensor are A / D-converted by an input circuit (not shown) and then input to the microcomputer. And the air conditioner ECU 5
In FIG. 2, a driver side temperature setting switch (driver side temperature setting means) 51 for setting the driver side air conditioning zone to a desired temperature as shown in FIG. A passenger seat side temperature setting switch (passenger seat side temperature setting means) 52 for setting a temperature, a swing switch 53 and the like are connected.

The swing switch 53 is connected to each grill 41a, 41b, 42a, 42b (each FACE outlet 2).
1a, 21b, 22a, 22b) is a louver operation command means for commanding swinging movement (swing) and stop of the first and second swing louvers 43, 46 of the swing louver device of 1a, 21b, 22a, 22b). Further, the air conditioner ECU 50 has an inside air temperature sensor 54 as an inside air temperature detecting means for detecting the air temperature in the vehicle compartment (hereinafter referred to as the inside air temperature), and an outside air temperature for detecting the air temperature outside the vehicle compartment (hereinafter the outside air temperature). An outside air temperature sensor 55 as detecting means and a solar radiation sensor 56 as solar radiation detecting means for detecting the amount of solar radiation entering the vehicle interior are connected.

Further, a post-evaporation temperature sensor 57 as a cooling degree detecting means for detecting an actual air cooling degree by the evaporator 10, and a cooling water temperature sensor as a cooling water temperature detecting means for detecting a temperature of a cooling water of a vehicle engine. 58,
And first and second wind direction sensors 59 and 60 for detecting the wind direction of the airflow from the FACE outlet. The post-evaporation temperature sensor 57 is, specifically, a post-evaporation temperature detecting means for detecting the air temperature immediately after passing through the evaporator 10 (hereinafter referred to as the post-evaporation temperature).

The first wind direction sensor 59 corresponds to a wind direction detecting means of the present invention, and is a louver angle detecting means for detecting a horizontal swing angle (horizontal louver angle) of the first swing louver 43. They are provided near the first louver swinging means, respectively. Specifically, the first wind direction sensor 59
As shown in FIG. 5, the potentiometer includes a movable contact 59a that reciprocates in the horizontal direction integrally with the first link lever 44, and a resistance element 59b that changes the voltage dividing ratio by moving the movable contact 59a. .

The second wind direction sensor 60 is a louver angle detecting means for detecting the vertical swing angle (vertical louver angle) of the plurality of second swing louvers 46, and is provided in the vicinity of the second louver swing means. Have been. Specifically, as shown in FIG. 6, the second wind direction sensor 60 is configured to move the movable contact 60a reciprocating in the up and down direction integrally with the second link lever 47, and to move the movable contact 60a to set the pressure division ratio. This is a potentiometer including a resistance element 60b to be changed.

Next, an air-conditioning control method by the air-conditioning ECU 50 of this embodiment will be described with reference to FIG.
This will be described with reference to FIG. Here, FIG. 7 is a flowchart showing an example of a control program of the air conditioner ECU 50.

First, when the ignition switch is turned on and DC power is supplied to the air conditioner ECU 50, execution of the control program (routine in FIG. 7) is started. At this time, first, the data processing memory and the like are initialized (step S1). Next, the data is read. That is, a switch signal from each switch and a sensor signal from each sensor are input (step S2).

More specifically, data processing is performed by inputting the driver and passenger side temperature set by the driver and passenger side temperature setting switches 51 and 52 and the operating state of the swing switch 53. In the memory. Further, the inside air temperature detected by the inside air temperature sensor 54, the outside air temperature detected by the outside air temperature sensor 55, the amount of solar radiation detected by the solar radiation sensor 56, the post-evaporation temperature detected by the post-evaporation temperature sensor 57, and the cooling water temperature The cooling water temperature detected by the sensor 58, the horizontal louver angle detected by the first wind direction sensor 59, and the vertical louver angle detected by the second wind direction sensor 60 are input and stored in the data processing memory. I do.

Next, based on the stored data and the following equations (1) and (2), the target outlet temperature TAO (Dr) on the driver's seat side and the target outlet temperature T on the passenger's seat side
AO (Pa) is calculated (step S3).

[0033]

## EQU1 ## TAO (Dr) = Kset.Tset (Dr)
−KR ・ TR−KAM ・ TAM−KS ・ TS + Kd (D
r) {CD (Dr) + Ka (Dr) (10-TAM)}
{Tset (Dr) -Tset (Pa)} + C

[0034]

## EQU2 ## TAO (Pa) = Kset · Tset (Pa)
−KR ・ TR−KAM ・ TAM−KS ・ TS + Kd (P
a) {CD (Pa) + Ka (Pa) (10-TAM)}
{Tset (Pa) -Tset (Dr)} + C

However, Tset (Dr) and Tset
(Pa) is the set temperature of the driver side air conditioning zone,
Indicates the set temperature of the passenger side air conditioning zone, TR, TAM,
TS represents the inside air temperature, the outside air temperature, and the amount of solar radiation into the vehicle interior, respectively. Kset, KR, KAM, KS, Kd (D
r) and Kd (Pa) are the temperature setting gain,
It represents the inside air temperature gain, the outside air temperature gain, the insolation gain, the temperature difference correction gain of the driver's seat side and the passenger side air conditioning zone.

Incidentally, Ka (Dr) and Ka (Pa) represent gains for correcting the degree of influence of the outside air temperature TAM on the respective air conditioning temperatures in the driver side air conditioning zone and the passenger seat side air conditioning zone, respectively, and CD (Dr ) And CD (Pa) are constants according to the degree of influence, and C is a correction constant. Where K
a (Dr), Ka (Pa), CD (Dr), CD (P
a) are the shape and size of the vehicle, the air conditioning unit 1
It changes with various parameters such as the blowing wind direction.

Next, a blower control voltage VA to be applied to the blower 4 is calculated based on the driver-side target outlet temperature TAO (Dr) and the passenger-side target outlet temperature TAO (Pa) obtained in step S3. (Step S4). Specifically, the blower control voltage VA is equal to the target blowing temperature T
Blower control voltages VA (Dr) and VA (Pa) suitable for AO (Dr) and TAO (Pa) are obtained based on the characteristic diagram of FIG.
(Dr) and VA (Pa) are obtained by averaging.

Next, the target outlet temperature TAO (Dr) on the driver's seat side and the target outlet temperature TAO (Pa) on the passenger seat obtained in step S3 and the target outlet temperature shown in the characteristic diagram of FIG. Based on the air outlet mode characteristics, each air outlet mode of the driver side air conditioning zone and the passenger side air conditioning zone is determined (step S5). Specifically, in determining the outlet mode, the target outlet temperature TAO (D
r), TAO (Pa) is determined to be in a FACE mode, a B / L mode, a FOOT mode and an F / D mode from a low temperature to a high temperature.

The FACE mode is an outlet mode in which air-conditioned air is blown toward the upper body (head and chest) of the occupant. The B / L mode is an air outlet mode in which air-conditioning air is blown toward the upper body (head and chest) and feet of the occupant. The FOOT mode is an outlet mode in which conditioned air is blown toward the feet of the occupant. Further, the F / D mode is an outlet mode in which conditioned air is blown toward the feet of the occupant and the inner surface of the windshield of the vehicle. In this embodiment, when a defroster switch provided on an operation panel (not shown) is operated, a DEF mode in which conditioned air is blown toward the inner surface of the front window glass of the vehicle is set. In any of the outlet modes, the driver's seat side FACE
Air outlet 22a and passenger seat side FACE air outlet 22
b is open.

Next, the opening degree SW (Dr) (%) of the driver side air mixing door 15 and the opening degree SW (Pa) (%) of the passenger side air mixing door 16 are calculated (step S).
6). In addition, such opening SW (Dr) and opening S
The calculation of W (Pa) is based on the target outlet temperature TAO on the driver's seat side.
(Dr) and target outlet temperature TAO (Pa) on the passenger seat side
And the post-evaporation temperature detected by the post-evaporation temperature sensor 57 (T
E), the cooling water temperature (TW) detected by the cooling water temperature sensor 58, and the following equations (3) and (4).

[0041]

## EQU3 ## SW (Dr) = {TAO (Dr) -TE} × 1
00 / (TW-TE)

## EQU4 ## SW (Pa) = {TAO (Pa) -TE} × 1
00 / (TW-TE)

Next, each of the FACE outlets 21a, 22a,
The operating state of the swing louver devices 21b and 22b is determined. Specifically, the first and second swing louvers 43, 4
The determination of the louver angle of 6 and the start or stop of the swing operation of the first and second swing louvers 43 and 46 are determined (step S7). Next, the routine of FIG. 10 is started to perform the cool air bypass opening control which is the main control of the present invention. Specifically, the cool air bypass passages 33, 3
4 opening SW of the cool air bypass doors 35 and 36 that open and close
(Dr) (%) and the opening degree SW (Pa) (%) are calculated (step S8).

Next, an output signal is sent to the blower drive circuit 8 so that the blower control voltage VA is determined. Further, the servo motors 30 to 30 are set so as to be in the determined outlet mode.
32 is energized. Further, the determined opening degree SW (D
r) and the opening degree SW (Pa) are controlled to energize the servomotors 17 and 18. Then, control signals are sent to the first and second drive motors 45 and 48 so as to be in the determined operation state. Also, the determined opening degree SW (Dr) (%)
The energization of the servomotors 37 and 38 is controlled so as to achieve the opening degree SW (Pa) (%) (step S9). next,
After a predetermined control cycle time (τ) has elapsed in step S10, the process returns to step S2.

Next, the control of the cool air bypass opening by the air conditioner ECU 50 will be described with reference to FIGS. 10 and 11. FIG. Here, FIG. 10 is a flowchart showing the cold air bypass opening control by the air conditioner ECU 50, and FIG. 11 is a characteristic diagram showing the opening of the cold air bypass door 35 with respect to the direction of the blown air blown out from the driver's seat side side grill 41b. .

First, when the routine of FIG. 10 starts, it is determined whether or not the suction port mode is set to the inside air circulation mode by an operation switch or the like (not shown) (step S).
11). If the result of this determination is NO, the routine exits from the routine of FIG. Also, the determination result of step S11 is YE
In the case of S, it is determined whether or not the air conditioning mode is the heating mode. Specifically, the determined outlet mode is FO
It is determined whether the mode is the OT mode, the F / D mode or the DEF mode (YES), or the mode is the FACE mode or the B / L mode (NO) (step S12).
If the result of this determination is NO, the air conditioning mode is the cooling mode, and the routine exits from the routine of FIG.

If the result of the determination in step S12 is YES
In the case of, since the air conditioning mode is the heating mode, it is determined whether or not the first swing louver 43 is swinging (swinging). For example, the swing switch 53 is turned on (O
N) It is determined whether or not it has been performed (step S13).
If the result of this determination is YES, the process exits the routine of FIG.

If the decision result in the step S13 is NO, a horizontal swing angle (horizontal louver angle) θa of the first swing louver 43 detected by the first wind direction sensor 59 and FIG. The opening degree SW (Dr) (%) of the cooling air bypass door 35 and the opening degree SW (Pa) (%) of the cooling air bypass door 36 are calculated based on the characteristic diagrams (step S14). Thereafter, the process exits the routine of FIG.

[Operation of Embodiment] Next, the operation of the vehicle air conditioner of this embodiment will be described with reference to FIGS.

The suction mode is the inside air circulation mode, the air conditioning mode is the heating mode, that is, the outlet mode is FOOT.
In the mode (the F / D mode or the DEF mode may be used), after the inside air sucked from the inside air suction port 6 by the action of the blower 4 is once cooled by the evaporator 10, the first and second air passages 11 and 12 and is reheated by the heater core 13 to become hot air. The warm air flows from the driver's seat side FOOT outlet 23a and the passenger seat side FOOT outlet 23b opened at the most downstream end of the first and second air passages 11 and 12 to the driver's seat side air conditioning zone and the passenger seat side. It is blown out to the air conditioning zone. In particular, the air is blown out from the driver's seat side FOOT outlet 23a to the foot of the driver in the driver's seat, and is blown out from the passenger seat side FOOT outlet 23b to the foot of the passenger in the passenger's seat.

At this time, the driver seat side and the passenger seat side center FA
FOOT without wind blowing from CE outlets 21a and 21b
In the mode (the F / D mode or the DEF mode may be used), the driver side and the passenger side side air outlet switching doors 25, 2
Regardless of the stop position of 7, the driver seat side FACE outlet 22a and the passenger seat side FACE outlet 22b are open. For this reason, warm air is also blown out from the driver seat side FACE outlet 22a and the passenger seat side FACE outlet 22b to the driver seat side air conditioning zone and the passenger seat side air conditioning zone.

If the occupant operates the swing switch 53 to move the first louver swing means so that the blown wind hits the side window glass, in order to remove the fogging of the inner surface of the side window glass or to prevent fogging. When,
The first swing louver 43 faces the side window glass. When the swing switch 53 is turned off, the operation of the first louver swing means is stopped, and the first louver 43 is stopped with the first louver 43 facing the side window glass.

At this time, the louver angle in the horizontal direction is detected by the first wind direction sensor 59. Specifically, when the louver angle near the side window glass (right side) near the center position is 10 ° or more, as shown in the characteristic diagram of FIG. 11, the opening of the cool air bypass door 35 is set to 0%. Set to. As a result, the cool air bypass passage 33 is not opened, so that the cool air cooled by the evaporator 10 is supplied to the driver seat side side FA.
It is not guided to the CE outlet 22a. Therefore,
The temperature of the warm air (air flow) blown out from the driver side side FACE outlet 22a increases.

When the occupant turns the first swing louver 43 toward himself / herself in order to warm his / her upper body, the horizontal louver angle detected by the first wind direction sensor 59 changes from the center position to the occupant ( Left side) The louver angle is closer. When the louver angle on the right side is equal to or less than 10 ° and the louver angle on the left side is equal to or less than 20 °, the opening of the cold air bypass door 35 increases as the direction of the first swing louver 43 faces the occupant. Increase the degree from 0% to 100%. Further, when the louver angle on the left side is 20 ° or more, the opening of the cool air bypass door 35 is fixed to 100%.

Therefore, when the occupant turns the first swing louver 43 toward himself / herself to warm his / her upper body, the cool air bypass passage 33 is opened, and the cool air cooled by the evaporator 10 is supplied to the driver's seat. Side FACE
It is led to the outlet 22a. Thereby, the warm air (air flow) blown out from the driver's seat side side FACE outlet 22a.
The temperature of becomes low.

[Effects of Embodiment] As described above, in the vehicle air conditioner, in the FOOT mode, the F / D mode or the DEF mode, the driver's side FACE blowing is performed to warm the upper body of the driver. When the warm air from the outlet 22a is directed to the occupant, the opening degree of the cool air bypass door 35 is increased to allow the cool air immediately downstream of the evaporator 10 to flow through the cool air bypass passage 33 to the driver's seat side FACE outlet 22a. Lead to. As a result, the driver's seat side FAC
Since the temperature of the warm air blown out from the E outlet 22a is lowered, it is possible to avoid problems such as the occupant's face squatting, so that a comfortable feeling of heating can be obtained. The same applies to a passenger on the passenger seat side.

In the FOOT mode, the F / D mode or the DEF mode, the hot air from the driver's seat side FACE outlet 22a is used to remove the fogging on the inner surface of the side window glass or to prevent the fogging. When facing the side window glass, the cool air bypass door 35
By closing the cool air bypass passage 33 by setting the opening of the evaporator 10 to 0%, the cool air immediately downstream of the evaporator 10 is prevented from being guided to the driver's seat side FACE outlet 22a. This increases the temperature of the hot air blown out from the driver seat side side FACE outlet 22a, thereby improving the effect of removing fogging of the side window glass. The same applies to a passenger on the passenger seat side.

[Other Embodiments] In the present embodiment, the present invention is applied to an air conditioner for a vehicle capable of controlling the left and right temperatures in a vehicle compartment independently of each other. The present invention may be applied to a vehicle air conditioner capable of performing front and rear temperature adjustment independently of each other. Further, the present invention may be applied to a vehicle air conditioner in which the temperature inside the vehicle compartment is adjusted by a single temperature variable unit.

In the present embodiment, the opening degree of the cool air bypass (the opening degree of the cool air bypass doors 35, 36) is continuously determined based on the wind direction of the warm air from the driver seat side and the passenger seat side side FACE outlets 22a, 22b. Was changed to linear)
The driver's seat side and the passenger seat side FACE
You may make it change stepwise based on the wind direction of the warm air from the outlet 22a, 22b.

In the present embodiment, the driver side center grill 4
1a, the driver's seat side grille 42a, the passenger's seat side center grille 41b, and the passenger's seat side grille 42b are fixed to the instrument panel 39, but each grill is fixed to the storage member while being rotatably supported in the horizontal direction. May be attached. In this case, the direction of the grill may be detected as the wind direction by the wind direction detection means.

In the present embodiment, the driver side center grill 4
1a, the driver's seat side grille 42a, the passenger's seat side center grill 41b, and the passenger's seat side grille 42b are fixed to the instrument panel 39. May be attached.

In the present embodiment, the first and second louver swinging means are moved and stopped by turning on and off the swing switch 53, and the stop positions of the first and second louvers 43 and 46 are set. Although it is determined, the stop position of the first and second swing louvers 43 and 46 may be mechanically changed by operating an operation switch, such as a type that does not swing.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a cold air bypass opening / closing area with respect to a wind direction from a driver side grille (Embodiment);

FIG. 2 is a configuration diagram showing an overall configuration of a vehicle air conditioner (embodiment).

FIG. 3 is a front view showing an instrument panel of the vehicle (embodiment).

FIG. 4 is a schematic diagram showing an overall configuration of a swing louver device (embodiment).

FIG. 5 is a schematic diagram showing a configuration of a first louver swinging means on the driver's seat side (embodiment).

FIG. 6 is a schematic diagram showing a configuration of a second louver swinging means on the driver's seat side (embodiment).

FIG. 7 is a flowchart illustrating an example of a control program of the air conditioner ECU (embodiment).

FIG. 8 is a characteristic diagram showing an outlet mode with respect to a target outlet temperature (embodiment).

FIG. 9 is a characteristic diagram showing a blower control voltage with respect to a target blowout temperature (embodiment).

FIG. 10 is a flowchart showing a control of a cool air bypass opening degree by an air conditioner ECU (embodiment);

FIG. 11 is a characteristic diagram illustrating an opening degree of a cold air bypass door with respect to a wind direction of a blown wind blown from a driver side grille (embodiment).

[Explanation of symbols]

REFERENCE SIGNS LIST 1 air conditioning unit 2 air conditioning duct 4 blower (blower) 13 heater core (heating heat exchanger) 15 driver side air mix door 16 passenger side air mix door 20 DEF outlet 24 driver side outlet switching door (mode switching door) ) 25 Driver side air outlet switching door (mode switching door) 26 Driver side air outlet switching door (mode switching door) 27 Passenger side air outlet switching door (mode switching door) 28 Passenger side air outlet switching door (mode) Switching door) 33 cool air bypass passage 34 cool air bypass passage 35 cool air bypass door 36 cool air bypass door 39 instrument panel 43 first swing louver 46 second swing louver 50 air conditioner ECU (air conditioning control means) 59 first wind direction sensor (wind direction detecting means) 21a Driver side driver center FACE outlet (central upper outlet) 22a Driver side side FACE outlet (side upper outlet) 23a Driver side FOOT outlet 21b Passenger side center FACE outlet (central upper outlet) 22b Passenger side side FACE outlet (side upper outlet) ) 23b FOOT outlet on passenger side 41a Center grill on driver side 42a Side grill on driver side 41b Center grill on passenger side 42b Side grill on passenger side

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[Procedure amendment]

[Submission date] November 28, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

Downstream of the first air passage 11, a defroster (DEF) outlet 20 for blowing out an air flow (mainly hot air) toward the inner surface of the front window glass, an upper body (head) of an occupant on the driver's seat side. A center face (FACE) outlet (corresponding to a central upper outlet of the present invention) 21a for blowing airflow (mainly cool air) toward the chest), at least a driver's side passenger's side window glass side upper body and Driver-side side face (FACE) outlet for blowing air flow (cold air or hot air) toward one of the inner surfaces of the driver-side side window glass (corresponding to the lateral upper outlet of the present invention) An opening 22a and a driver-side foot (FOOT) outlet 23a for blowing out an airflow (mainly warm air) toward the foot of the driver on the driver side are open. The airflow (mainly hot air) is blown out from the DEF outlet 20 not only toward the inner surface of the windshield in the driver side air conditioning zone but also toward the inner surface of the front window glass in the passenger side air conditioning zone. You.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0037

[Correction method] Change

[Correction contents]

Next, a blower control voltage VA to be applied to the blower 4 is calculated based on the driver-side target outlet temperature TAO (Dr) and the passenger-side target outlet temperature TAO (Pa) obtained in step S3. (Step S4). Specifically, the blower control voltage VA is equal to the target blowing temperature T
Blower control voltages VA (Dr) and VA (Pa) suitable for AO (Dr) and TAO (Pa) are obtained based on the characteristic diagram of FIG.
(Dr) and VA (Pa) are obtained by averaging.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0038

[Correction method] Change

[Correction contents]

Next, the target outlet temperature TAO (Dr) on the driver's seat side and the target outlet temperature TAO (Pa) on the passenger seat obtained in step S3 and the target outlet temperature shown in the characteristic diagram of FIG. Based on the air outlet mode characteristics, each air outlet mode of the driver side air conditioning zone and the passenger side air conditioning zone is determined (step S5). Specifically, in determining the outlet mode, the target outlet temperature TAO (D
r), TAO (Pa) is determined to be in a FACE mode, a B / L mode, a FOOT mode and an F / D mode from a low temperature to a high temperature.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0044

[Correction method] Change

[Correction contents]

Next, the control of the cool air bypass opening by the air conditioner ECU 50 will be described with reference to FIGS. 10 and 11. FIG. Here, FIG. 10 is a flowchart showing the cold air bypass opening control by the air conditioner ECU 50, and FIG. 11 is a characteristic diagram showing the opening of the cold air bypass door 35 with respect to the wind direction of the blown air blown out from the driver's seat side side grill 42a. .

[Procedure amendment 5]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yuichi Kajino 1-1-1, Showa-cho, Kariya-shi, Aichi Pref.

Claims (6)

[Claims] 1. An air passage having an upper side air outlet for blowing air toward at least one of a side window glass upper body and a side window glass of an occupant; and (b) an air passage provided in the air passage. A heating heat exchanger for heating air passing through the air passage; and (c) sending unheated air from the air passage to the side upper outlet, bypassing the heating heat exchanger. (D) a bypass door for opening and closing the bypass passage, and (e) a wind direction detecting means for detecting a wind direction of an air flow from the side upper outlet, and detecting the wind direction during heating. Means for controlling the bypass door so as to open the bypass passage when the airflow from the side upper air outlet is directed to the occupant by the means. . 2. The air conditioner for a vehicle according to claim 1, wherein the air-conditioning control means increases the opening degree of the bypass passage as the airflow from the upper side air outlet is directed toward an occupant. An air conditioner for a vehicle, characterized in that the bypass door is controlled in such a way as to perform the control. 3. An air passage having an upper side outlet for blowing air toward at least one of the side window glass upper body and the side window glass of the occupant; and (b) an air passage provided in the air passage. A heating heat exchanger for heating air passing through the air passage; and (c) sending unheated air from the air passage to the side upper outlet, bypassing the heating heat exchanger. (D) a bypass door for opening and closing the bypass passage, and (e) a wind direction detecting means for detecting a wind direction of an air flow from the side upper outlet, and detecting the wind direction during heating. A vehicle having air-conditioning control means for controlling the bypass door so as to close the bypass passage when the means detects that the airflow from the side upper air outlet is directed to the nearby side window glass. For air conditioning Location. 4. The air conditioner for a vehicle according to claim 3, wherein the air-conditioning control means opens the bypass passage as the airflow from the upper side air outlet is directed toward the side window glass. An air conditioner for a vehicle, wherein the bypass door is controlled so as to reduce the degree. 5. The vehicle air conditioner according to claim 1, wherein the air passage directs an air flow from a central portion of an instrument panel of the vehicle toward an upper body of an occupant. A mode switching door that opens and closes the central upper outlet, and has a mode switching door that opens and closes the central upper outlet, when the mode switching door is in an outlet mode in which the central upper outlet is closed. An air conditioner for a vehicle, comprising: 6. The air conditioner for a vehicle according to claim 1, wherein the upper side air outlet is formed in a side grill supported by an instrument panel of the vehicle. An air conditioner for a vehicle, wherein a swing louver is provided in the side grill to perform a swinging motion at least in a horizontal direction to change a wind direction of an airflow from the upper side outlet. .