JPH06156056A - Air conditioning apparatus for automobile - Google Patents

Abstract

(57) [Abstract] [Purpose] While air conditioning, it improves comfort in an unsteady state and suppresses the feeling of haze in the head. [Configuration] During air conditioning, the control device 32 determines whether the air conditioning state in the vehicle compartment is initial, transient, or steady, and the wind direction setting mechanism in the upper outlet 26 and the lower outlet 28 in accordance with the determination result. It is driven in synchronization with the wind direction setting mechanism of. For example, in the early stage of warm-up, the air-conditioning wind is concentrated and blown out to the occupant's feet, during the warm-up transition, the air-conditioning wind is diffused and blown from the occupant's feet to the lower legs, and when the warm-up is steady, the air-conditioning wind is diffused to the occupant's feet. And blow it out.

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.

[0002]

2. Description of the Related Art As a conventional automobile air conditioner, there is one disclosed in JP-A-2-322569. That is, after detecting whether the forearm and the lower leg are exposed, it is determined whether the air conditioning state in the vehicle compartment is unsteady or steady, and the target blowout temperature is calculated. For example, when the exposed parts of the occupant are both the forearm and the lower leg, the difference between the set room temperature and the detected room temperature is smaller than a predetermined value. In the steady state, the target blowing temperature is set to the detected room temperature, the set room temperature, In addition to the amount of solar radiation, it is calculated as a function of the air temperature near the exposed part of the occupant. Further, in the case where the exposed parts of the occupant are both the forearm and the lower leg, the difference between the set room temperature and the detected room temperature is larger than a certain determined value, and in the unsteady state, the target blowing temperature is
In addition to the detected room temperature, the set room temperature, and the amount of solar radiation, it is calculated as a function of the air temperature near the unexposed part of the occupant.

Further, the one disclosed in Japanese Patent Laid-Open No. 2-299921 discloses an air conditioner for automobiles that uses air-conditioning air, as well as an air conditioner for directly heating and cooling parts such as feet, hips, back and hands. After deciding whether the heater mode is the vent mode or not, the air-conditioning air conditioner that uses the air-conditioning air determines whether the heater mode is the vent mode. The amount of heat supplied is determined by the difference between the set room temperature and the detected room temperature. For example, when the vehicle air conditioner is in the heater mode and the outside air temperature is 0 ° C. or less, the heating priority of each air conditioner depends on the difference between the set room temperature and the detected room temperature. It is decided that the temperature increases in order. When the vehicle air conditioner is in the heater mode and the outside air temperature is 0 ° C. or higher, the heating priority of each air conditioner is set according to the difference between the set room temperature and the detected room temperature. The temperature is decided to increase in the order of the back. Furthermore, when the automobile air conditioner is in vent mode and the amount of solar radiation is less than 330 kcal / m ² h,
Depending on the difference between the set room temperature and the detected room temperature, the cooling priority of each cooling and heating device is determined so that the temperature becomes lower in the order of hand, hip, back, and foot. When the vehicle air conditioner is in the vent mode and the amount of solar radiation is 330 kcal / m ² h or more, the cooling priority of each cooling / heating device is as follows: feet, hips, hands,
It is decided that the temperature decreases in the order of the back.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the automobile air conditioner disclosed in Japanese Patent Publication No. 9, the control is mainly performed in a steady state in which the detected room temperature is close to the set room temperature, and is similar to the normal control in the unsteady state in which the detected room temperature is not close to the set room temperature. The comfort in the unsteady state is not improved compared to the conventional one. Also, the outside air is 0
In the unsteady state when the temperature is lower than 100 degrees, the air mix door is likely to be full hot, and it becomes impossible to control the target outlet temperature, so such control often becomes meaningless. . Moreover, the outside air is 0
In the unsteady state where the temperature is lower than 0 degrees C, the skin temperature of the lower leg is considerably low, and therefore it is necessary to quickly heat the body regardless of whether it is exposed or not, in order to improve comfort.

The device disclosed in Japanese Patent Laid-Open No. 2-299921 is capable of cooling and heating the back, hips, hands, soles and the like in addition to the conventional air conditioner for automobiles using air-conditioned air. However, it can only cool and heat the parts where the human body contacts the seat, floor, etc., and cannot heat and cool the upper thighs, lower legs, and upper feet. Further, when the control of the air conditioning system for directly cooling and heating each part of the occupant is applied to the air conditioning system for automobiles using the conditioned air, essentially the same control is performed from the unsteady state to the steady state. It is difficult to improve comfort in the steady state, and problems such as haze in the steady state occur.

Here, a general relationship between the environmental temperature and comfort will be described. That is, FIG. 23 shows the comfort category scale. FIG. 24 shows the category scale of comfort and temperature sensation. FIG. 25 shows
1 is a graph showing the relationship between the comfort sensation and comfort of a naked subject when the room is heated to a certain temperature. As is clear from FIG. 25, the room temperature, that is, the environmental temperature around 30 ° C., becomes the boundary, and the lower the temperature, the more the discomfort increases.

FIG. 26 is a graph showing the relationship between the average skin temperature and the feeling of warmth and comfort when a subject is exposed to cold. As is apparent from FIG. 26, it can be seen that the comfort level deteriorates as the average skin temperature decreases.

From these FIG. 25 and FIG. 26,
For example, a person who has been in a room with a room temperature of 25 ℃ for a long time has an outside temperature of 15 ℃.
If you go outside the room after a long enough time,
In the time period that is not so long, the skin temperature decreases with time, and the comfort factor deteriorates with time.

FIG. 27 is a graph showing the relationship between the skin temperature of each part and the average skin temperature with respect to the temperature.
From FIG. 27, it can be seen that as the environmental temperature decreases, the average skin temperature also decreases, so that the decrease in environmental temperature affects the feeling of comfort.

Further, FIG. 28 shows that the environmental temperature is 10 ° C. and 20 ° C.
It is a graph which showed the skin temperature of each site | part at the time of 30 degreeC. As is clear from FIG. 28, the skin temperature of the peripheral part of the human body such as the lower body is higher than that of other parts.

Further, FIG. 29 shows that at an environmental temperature of 10 ° C., the thermal sensation of some parts is changed from 0 to +4,
This is an examination of how the whole body thermal sensation changes. Here, the thermal sensation evaluation scale is 4: very hot, 3: hot,
2: slightly warm, 0: neither can be said, -1: somewhat cool, -2: cool, -3: cold, -4: very cold. As is clear from FIG. 29, in a low temperature environment, when the thermal sensation of each part of the human body is on the "cold" side, the whole body thermal sensation does not improve to the "warm" side even if a part of the body is warmed. I understand. It should be noted that FIGS.
It is an excerpt from "Thermal physiology" published by Riko Engineering Co., Ltd. in 983.

Therefore, an object of the present invention is to improve the comfort in an unsteady state and to suppress the feeling of haze in the head.

[0013]

SUMMARY OF THE INVENTION A first aspect of the present invention provides conditioned air, whose temperature is adjusted based on thermal environment information inside and outside the vehicle such as detected room temperature, outside air temperature, solar radiation amount, set room temperature, etc. In an automobile air conditioner configured to blow air into a vehicle compartment through a plurality of air outlets arranged in the air conditioner, there is a concentrated air blow state in which the air conditioning air is concentrated and blown to the target occupant from the plurality of air outlets. A wind direction setting unit that can be set, a wind direction setting unit that can set a diffused blowing state in which the conditioned air is blown from the plurality of air outlets to the target occupant with a feeling of airflow, and the air conditioning air is swayed vertically from the plurality of air outlets. An air conditioning state determining means for determining whether the air conditioning state in the vehicle compartment is an initial state, a transient state, or a steady state, during air conditioning; Depending on the determination result from the air conditioning state determining means, and a, a blowout state changing means for synchronously driving said at least two wind direction setting means.

According to a second aspect of the present invention, the conditioned air blown from the lower air outlet is fixed to the blower state changing means of the first aspect of the invention toward the peripheral part of the lower body of the occupant in the early stage of warming up from the air conditioner determining means. At least the above 2
The two wind direction setting means are driven in synchronization with each other, and the air-conditioning winds blown out from the lower outlets are driven in synchronization with each other in order to transfer the conditioned air blown from the lower outlet from the peripheral part of the lower body of the occupant to the trunk of the body except when warming up. Means are provided.

According to a third aspect of the present invention, a door for opening and closing the blowing of the conditioned air from the upper outlet of the first aspect of the invention into the vehicle compartment is provided, and the blowing state changing means of the first aspect is provided with the air conditioning state determining means. In the warm-up early stage, in the transient period and in the steady state, the door is closed, and in the middle warm-up period and the warm-up late period, the door is opened, while in the middle warm-up period, the conditioned air blown out from the upper outlet of the occupant is discharged. The concentrated wind direction setting means is driven to concentrate and blow out toward the trunk of the body, and in the latter part of the warm-up, the conditioned wind blown from the upper outlet is diffused and blown toward the trunk of the occupant. Means for driving the setting means are provided.

[0016]

According to the first aspect of the present invention, during air conditioning, the air conditioning state determination means determines whether the air conditioning state in the vehicle compartment is initial, transient, or steady, and the blowing state change means determines the determination result from the air conditioning state determination means. Accordingly, at least two wind direction setting means are synchronously driven. For example, when the air-conditioning state in the vehicle compartment is the initial state, one wind direction setting means is operated in the concentrated blowing state, and another wind direction setting means is operated in the downward blowing direction. Further, when the air-conditioning state in the vehicle interior is in a transient state, one wind direction setting means is operated in a diffused blowing state, and the other wind direction setting means is operated in an upward blowing direction. Further, in the steady state, one wind direction setting means is operated in the diffusion blowing state, and the other wind direction setting means is operated in the downward blowing direction.

In the second aspect of the invention, in the initial stage of warming up, the conditioned air is blown from the lower outlet toward the peripheral portion of the lower body of the occupant in a fixed manner. Except at the early stage of warm-up, air-conditioning air is blown from the lower air outlet while swinging from the peripheral part of the lower body of the occupant to the trunk of the body.

In the third aspect of the invention, the blast of the conditioned air from the upper outlet is stopped in the warm-up initial stage, in the transient state, and in the steady state. During the middle warm-up period, air-conditioning air is concentrated and blown from the upper outlet toward the trunk of the occupant. In the latter part of the warm-up period, air-conditioning air is diffused and blown from the upper outlet toward the trunk of the occupant.

[0019]

First Embodiment FIG. 1 shows an automobile air conditioner as a first embodiment. In FIG. 1, the air conditioner main body 1 includes an intake unit 2, a blower unit 3, a cooling unit 4, a heater unit 5, and a duct unit 6.

The intake unit 2 has an outside air introduction port 7
The inside air inlet 8 and the intake door 9 are provided. The outside air introduction port 7 receives the traveling wind pressure and introduces outside air. The inside air introduction port 8 introduces the air in the vehicle compartment. The intake door 9 opens and closes the outside air introduction port 6 and the inside air introduction port 7 at an arbitrary ratio by an actuator 10 driven by a control device 32 described later.

The blower unit 3 includes a blower fan 11
Is provided. The blower fan 11 is a blower fan motor 1 as an actuator driven by the control device 32.
It is rotationally driven by 2.

The cooling unit 4 is provided with an evaporator 13. The evaporator 13 cools passing air with a refrigerant supplied from a refrigeration cycle including a compressor (not shown), a condenser (not shown), an expansion valve (not shown), and the like.

The heater unit 5 includes a heater core 14
, Air mix door 15 and air mix chamber 1
6 and are provided. The heater core 14 warms the passing air with hot water supplied from a heating cycle including an engine (not shown), a hot water cock (not shown), an expansion valve (not shown), and the like. The air mix door 15 is cooled by the actuator 17, which is driven by the control device 32, when the air that has passed through the evaporator 13 and is chilled bypasses the heater core 14 and is still chilled, and the air that has passed through the evaporator 13 is chilled. The air is opened and closed so as to adjust the ratio with the warm air warmed by passing through the heater core 14. The air mix chamber 16 is a room for producing temperature-controlled conditioned air by improving the mixing of the cold air and the warm air.

The duct unit 6 includes a defroster duct 18, a ventilator duct 19, and a foot duct 20.
, Defroster door 21, ventilator door 22,
A foot door 23 is provided. Defroster duct 18
Are connected to a plurality of defroster outlets 25 which are separately arranged on the upper surface of the instrument panel 24 in the left-right direction in the vehicle width direction, and blow out conditioned air toward a front window (not shown). The ventilator duct 19 is connected to a plurality of ventilator outlets 26 that are separately arranged on the front surface of the instrument panel 24 in the left-right direction in the vehicle width direction, and is seated on a seat 27 that is arranged to face the front surface of the instrument panel 24. Air-conditioning air is blown toward the upper body of the target occupant, not shown. The foot duct 20 is connected to a plurality of foot outlets 28 which are separately arranged on the lower surface of the instrument panel 24 in the left-right direction in the vehicle width direction and is connected to the foot outlet 28, and blows the conditioned air toward the feet of the target occupant seated on the seat 27. . Each of the defroster door 21, the ventilator door 22, and the foot door 23 individually opens and closes the defroster duct 18, the ventilator duct 19, and the foot duct 20 by actuators 29, 30, 31 driven by a control device 31. The ventilator outlet 26 and the foot outlet 28 are a plurality of outlets arranged vertically in the vehicle interior. These ventilator outlets 2
6 and the foot outlet 28 are each provided with an outlet device 40 described later.

The control device 32 is composed of a microcomputer. The control device 32 includes a room temperature sensor 33.
A room temperature setting device 34, an outside air temperature sensor 35, and a solar radiation sensor 3
6, the target room air temperature Tof, the blower fan motor applied voltage Vfan, the air mix door, and the like based on the thermal environment information such as the detected room temperature Tic, the set room temperature Tset, the outside air temperature Ta, and the solar radiation amount S from the thermal environment information input unit 37. The target air conditioning conditions such as the opening degree X are calculated, and the air conditioner main body 1 is driven so that the air conditioning conditions in the vehicle compartment maintain the calculated target air conditioning conditions.

2 to 8 show the ventilator outlet 2.
6 and the outlet device 4 provided at the foot outlet 28
0 is shown.

In FIG. 2, a blowout device 40 includes a duct 41 and a plurality of guide vanes 42, 43, 44, 4.
5,46 and a plurality of dampers 47,48,49,
A blowout state setting mechanism 51 as a wind direction setting means such as diffusion and avoidance, and a blowout direction setting mechanism 52 as a wind direction setting means such as a vertical direction are provided.

The duct 41 includes the inlet 411 and the air distribution passage 4
12 and a horizontally long blow-out port 413 having a large aspect ratio, and takes in the air-conditioning air from the ventilator duct 19 or the foot duct 20 of the air conditioner body 1 into the introduction port 411, and passes this air-conditioning wind to the air distribution passage 412 and blows it out. It blows out from 413 toward the vehicle interior side.

The plurality of guide vanes 42 to 46 are provided from the inlet 411 of the duct 41 to the ventilator outlet 413.
Is provided separately in the lateral width direction (vehicle width direction), and extends from the air distribution passage 412 of the duct 41 to the ventilator outlet 413, and these air passages 412 and the ventilator outlet 413 have a lateral width. The passage is divided into a plurality of passages such that the passages are equally divided into six passages indicated by symbols A, B, C, D, E, and F.

The plurality of dampers 47 to 49 are provided between the inlet 411 and the outlet 413 of the duct 41 so as to be divided in the lateral width direction so as not to interfere with the guide vanes 42 to 46, and in the lateral width direction. When viewed from above, they are combined with each other in an intersecting manner to selectively open and close the passage between the inlet 411 of the duct 41 and the ventilator outlet 413.

Specifically, the central damper 47 has a plurality of portions having different areas in the width direction, such as a wide area portion 47a and narrow area portions 47b and 47c. The large area portion 47a is provided with the guide vanes 43.
It corresponds to a region (corresponding to the passages C and D) from the guide vane 44 to the guide vane 45. One narrow area portion 47b extends from the wide area portion 47a toward one side in the width direction and corresponds to a region from the guide vanes 43 to the guide vanes 42 (corresponding to the passage B). The other narrow area portion 47c is the wide area portion 47a.
From the guide vane 45 to the other side in the width direction, and corresponds to a region (corresponding to the passage E) from the guide vane 45 to the guide vane 46.

The damper 48 on one side has a large area 48.
a and a small area portion 48b,
It has multiple parts with different areas in the width direction. The large area portion 48a corresponds to a region (corresponding to the passage A) from one side wall 411a of the introduction port 411 to the guide vane 42. The narrow area portion 48b is the wide area portion 48
The guide vane 42 extends from a toward one side in the width direction.
From the guide vane 43 to the guide vane 43 (corresponding to passage B)
It corresponds to.

The damper 49 on the other side has a large area portion 49.
a and a small area portion 49b,
It has multiple parts with different areas in the width direction. The large area portion 49a corresponds to a region (corresponding to the passage F) from the other side wall 411b of the introduction port 411 to the guide vane 46. The narrow area portion 49b is the wide area portion 49
The guide vane 4 extends from a toward one side in the width direction.
It corresponds to the area from 6 to the guide vanes 45 (corresponding to the passage E).

The narrow area portion 47b of the central damper 47 and the narrow area portion 48b of the damper 48 on one side are combined so as to intersect each other, while the narrow area portion 47c of the central damper 47 and the damper 49 on the other side. Of the plurality of dampers 47 divided in the width direction by combining the narrow area portions 49b of the
49 are combined in an intersecting manner so as to have an allocation of 90 ° when viewed in the width direction. As shown in FIG. 3, the support shaft 50 projecting from the dampers 48, 49 on both sides in the combined state to both sides in the width direction is bearing-fitted to both side walls 411a, 411b of the introduction port 411.

Further, as shown in FIG. 3, the dampers 4 on both sides are
In the state where a part of the inlet 411 is closed by 8, 49, the narrow area parts 48b, 49 of the dampers 48, 49 are closed.
b is partition parts 411e, 411f, 411g, 411h provided on the upper and lower walls 411c, 411d of the inlet 411.
And the dampers 48, 49 close the portions of the inlet 411 corresponding to the passages A, B, E, F.

Further, as shown in FIG. 5, the damper 4 in the center is
In the state where a part of the introduction port 411 is closed by 7, the narrow area parts 47b and 47c of the damper 47 are separated by the partition part 4.
11e, 411f, 411g, and 411h are vertically overlapped with each other, so that the damper 47 passes through the passage B of the inlet 411.
The parts corresponding to C, D and E are closed.

Returning to FIG. 2 again, the blowout state setting mechanism 51 for concentration, diffusion, avoidance, etc. is provided with the introduction port 41.
1 is provided on one side, and the blowing state of the conditioned air blown into the vehicle compartment from the introduction port 411 is one of a concentrated blowing state, a diffusion blowing state, and an avoiding blowing state.
The motor is a motor such as a stepping motor as an actuator driven by the control device 32. The output shaft of the motor 51 is connected to the support shaft 50 of the plurality of dampers 47 to 49. Therefore, by controlling the rotation amount and the rotation direction of the motor 51, the plurality of dampers 47 to 49 rotate about the support shaft 50,
The blowing state of the conditioned air blown into the vehicle compartment from the blowing device 40 is one of a concentrated blowing state, a diffusion blowing state, and an avoiding blowing state.

That is, in the concentrated blowing state, as shown in FIG. 3, the large area portions 48a, 4 of the dampers 48, 49 are arranged.
The area 9a corresponds to the passages A and F of the inlet 411 (see FIG. 6).
(The part with a mesh pattern) is closed, and the dampers 48, 49 are
Partition portions 411e, 411f, 411g, 41 in which the narrow area portions 48b, 49b of the protrusions protrude into the introduction port 411.
In cooperation with 1h, the area corresponding to the passages B and E of the introduction port 411 (the portion with the mesh pattern in FIG. 6) is closed, and the damper 4
7 opens the area | region (white part of FIG. 6) corresponding to the passages C and D of the inlet 411. And the air conditioner body 1
The air-conditioning air created by
Taken in 1. Then, as shown in FIG. 6, the conditioned air shown by the arrows in the inlet 411 changes to the inlet 41.
1 through the passages C and D divided by the guide vanes 43, 44 and 45 from the portion opened by the damper 47, and the passages C and D of the ventilator outlet 413.
Is blown out into the vehicle compartment while concentrating on the target occupant 80 in a range indicated by a virtual line from the portion corresponding to.

Further, in the diffusion blowing state, as shown in FIG. 4, all of the dampers 47 to 49 open all of the introduction port 411 (white portion in FIG. 7). Then, the conditioned air created by the air conditioner body 1 is taken into the inlet 411 of the air outlet device 40. Then, as shown in FIG.
The air-conditioning air shown by the arrow that is taken into the inlet 411 passes through the passages A, B, C, D, E, and F from all the openings 47 to 49 of the inlet 411, and the entire ventilator outlet 413. Is blown out in a wide area in the vehicle compartment including the target occupant 80 within a range indicated by a virtual line.

Furthermore, in the avoidance blowing state, as shown in FIG.
The area (corresponding to the mesh pattern in FIG. 8) corresponding to the passages C and D of 11 is closed, and the narrow area portion 47 of the damper 47 is formed.
Partition part 4 in which b and 47c project into the introduction port 411
In cooperation with 11e, 411f, 411g, and 411h, the regions (corresponding to the mesh pattern in FIG. 8) of the introduction port 411 corresponding to the passages B and E are closed, and the dampers 48 and 49 are introduced.
Areas corresponding to passages A and F of 11 (white portions in FIG. 8)
Open up. Then, the conditioned air created by the air conditioner body 1 is taken into the inlet 411 of the air outlet device 40.
Then, as shown in FIG. 8, the conditioned air taken in by the inlet 411 and shown by the arrow passes through the passages A and F divided by the guide vanes 42 and 46 from the portion opened by the dampers 48 and 49. , Ventilator outlet 41
From a portion corresponding to the passages A and F of 3 in a range shown by an imaginary line, the air is blown out into the vehicle compartment not including the target occupant 80.

Returning to FIG. 2 again, the blow-out direction setting mechanism 52 such as the vertical direction is provided with the blow-out port device 40.
The outlet 53 is provided with a duct 53 rotatably attached in the vertical direction. The duct 53 is driven to rotate in the vertical direction by a motor 54 such as a stepping motor as an actuator driven by the control device 32. That is, the duct 53 is rotated in the vertical direction by the control of the rotation amount and the rotation direction of the motor 54, and the blowing directions of the conditioned air blown into the vehicle interior from the blowing device 40 are the upward blowing direction, the downward blowing direction, and the vertical blowing direction. It is one of the swinging blowing directions.

The operation of the first embodiment will be described in detail with reference to the flow charts shown in FIGS. 9 and 10.

When the air conditioner switch 46 is turned on and the air conditioning control is started in step 101, in step 102, the constants A to A used in the formula for calculating the target outlet temperature Tof are calculated.
E and the constants A to H used in this air conditioning control, such as the constants F, G, and H used in the formula for calculating the air mix door opening X, are initialized.

In step 103, the outside air temperature Ta detected by the outside air temperature sensor 37, the detected room temperature Tic detected by the room temperature sensor 36, and the insolation amount S detected by the insolation amount sensor 38.
And the set room temperature T from the room temperature setter 41 operated by the passenger.
Read various data such as set.

In step 104, the temperature difference ΔT = Tic-Tset between the detected room temperature Tic and the set room temperature Tset is calculated as
The blower fan motor applied voltage Vfan is obtained by collating with the blower fan map in the preset control characteristics.

In step 105, the outside air temperature Ta, the detected room temperature Tic, the set room temperature Tset, and the solar radiation amount S are substituted into the target blow-out temperature formula, Tof = A × Ta + B × Tic + C × Tset + D × S + E, to obtain the target blow-out temperature Tof. Ask for.

At step 106, the target blowing temperature T
The value of of is substituted into the air mix door opening expression, X = F × Tof ² + G × Tof + H, to obtain the air mix door opening X.

In step 107, the target outlet temperature T
Of is collated with the outlet state map in the preset control characteristics to obtain outlet states such as the foot mode, bilevel mode, and vent mode. That is, the heater mode is selected when the target outlet temperature Tof is high, the bi-level mode is selected when the target outlet temperature Tof is medium, and the vent mode is selected when the target outlet temperature Tof is low.

In step 108, it is determined whether the outlet state is the heater mode. Then, if the outlet state is the heater mode (YES in step 108).
Since S) indicates that the target outlet temperature Tof is high and the air conditioner body 1 is in the heating operation, the control process for the outlet device 40 in steps 109 to 125 described later is performed, and then the process proceeds to step 126. . vice versa,
When the outlet status is other than heater mode (step 1
If 08 is NO), it means that the target outlet temperature Tof is low and the air conditioner body 1 is in the cooling operation, so the routine proceeds to step 126.

In step 126, the blower fan motor applied voltage Vfan is output to the fan motor 12.

At step 127, various actuators 29 for driving the defroster door 20, the ventilator door 22, the foot door 23, etc., with the outlet state signals such as the foot mode, the bi-level mode, and the vent mode calculated by the outlet state map. , 30, 31 are output.

In step 128, steps 109 to 1
The balloon state setting mechanism 51 for concentration, diffusion, avoidance, etc., of the state of concentration, diffusion, avoidance, etc. calculated by the control process for the outlet device 40 in FIG.
And a blowing direction setting mechanism 52 such as a vertical direction.

Thus, one control operation is completed. Then, this control operation returns to step 103 and is repeated again until the air conditioner switch 46 is turned off.

Steps 109 to 125 correspond to the air-conditioning state judging means and the blow-off state changing means, and the control processing for the blow-out port device 40 in this step will be described in detail. First, in steps 109 and 110, the temperature difference ΔT = Tset between the set room temperature Tset and the detected room temperature Tic.
The -Tic compared to the first through fourth reference temperature T ₁ through T _4, the result of the comparison, air-conditioning of the vehicle interior state warm-up initial state, warm-up middle state, warm-up late state, the transient state, a steady state Determine which of the
In accordance with the result of this determination, control processing is performed on the plurality of outlet devices 40 provided at the ventilator outlet 26 and the foot outlet 28 of the instrument panel 24, respectively. The first to fourth reference temperatures are T ₁ > T ₂
> It is in a relationship of T _3> T _4.

Specifically, (1) when the temperature difference ΔT is higher than the first reference temperature T ₁ (ΔT in step 109)
> T ₁ ) means that the air-conditioning state in the vehicle compartment is in the warm-up initial state. Therefore, in step 111, concentration / diffusion / avoidance of the outlet device 40 in the foot outlet 28, which is the lower outlet, is performed. Select the output of the centralized balloon signal to the balloon state setting mechanism 51 of
In step 112, the output of the foot blowing direction signal to the blowing direction setting mechanism 52 such as the vertical direction of the blowing device 40 in the foot blowing port 28 is selected.

(2) When the temperature difference ΔT is located between the first reference temperature T ₁ and the second reference temperature T ₂ (step 109)
Since T ₁ ≧ ΔT ≧ T ₂ ) means that the air-conditioning state in the vehicle compartment is in the warm-up mid-state, the concentration of the air outlet device 40 in the foot air outlet 28, which is the lower air outlet, is concentrated in step 113. -Select the output of the concentrated balloon signal to the balloon state setting mechanism 51 such as diffusion and avoidance. Further, in step 114, the output of the vertical swinging blowing direction signal to the blowing direction setting mechanism 52 such as the vertical direction of the blowing device 40 in the foot blowing port 28 is selected, and in step 115, the ventilator door 21 of the air conditioner main body 1 is selected. The output of the open signal to the door actuator 29 is selected. Further, in step 116, the output of the concentrated blowout state signal to the blowout state setting mechanism 51 such as concentration, diffusion, and avoidance of the blowout port device 40 in the ventilator blowout port 26 which is the upper blowout port is selected, and in step 117, the ventilator blowout port is selected. The output of the downward thigh direction blowing signal to the blowing direction setting mechanism 52 such as the vertical direction of the blowing port device 40 in 26 is selected.

(3) When the temperature difference ΔT is located between the second reference temperature T ₂ and the third reference temperature T ₃ (step 109)
At ΔT <T ₂ and at step 110 T ₂
>ΔT> T ₃ ) means that the air-conditioning state in the vehicle compartment is in the late warm-up state, so step 118
In step 119, the output of the concentrated blowing signal to the blowing state setting mechanism 51 such as concentration, diffusion, and avoidance of the blowing device 40 in the foot blowing port 28 which is the lower blowing port is selected, and in step 119, the blowing in the foot blowing port 28 is performed. The output of the vertical swinging blowing direction signal to the blowing direction setting mechanism 52 such as the vertical direction of the mouth device 40 is selected. Then, in step 120, the door actuator 29 of the ventilator door 21 of the air conditioner body 1
Output of the open signal to the blowout state setting mechanism 51 for concentration / diffusion / avoidance of the blowout port device 40 in the ventilator blowout port 26, which is the upper blowout port, is selected in step 116. In step 117, the output of the downward thigh direction blowing signal to the blowing direction setting mechanism 52 such as the vertical direction of the blowing device 40 in the ventilator blowing port 26 is selected.

(4) When the temperature difference ΔT is located between the third reference temperature T ₃ and the fourth reference temperature T ₄ (step 109)
At ΔT <T ₂ and at step 110 T ₃
≧ ΔT ≧ T ₄ ) means that the air-conditioning state in the vehicle interior is in a transient state. Therefore, in step 122, concentration / diffusion / avoidance of the outlet device 40 in the foot outlet 28, which is the lower outlet, is performed. Balloon state setting mechanism 5
The output of the diffusion blowing signal for 1 is selected, and in step 123, the output of the upward blowing direction signal to the blowing direction setting mechanism 52 such as the vertical direction of the blowing device 40 in the foot blowing port 28 is selected.

(5) When the temperature difference ΔT is lower than the fourth reference temperature T ₄ (ΔT <T ₂ in step 109 and T ₄ > ΔT in step 110), the air conditioning state in the vehicle interior is in a steady state. Therefore, in step 124, the output of the diffused balloon signal to the balloon state setting mechanism 51 such as concentration, diffusion, and avoidance of the outlet device 40 in the foot outlet 28 which is the lower outlet is selected, and the step is performed. At 125, the output of the foot blowing direction signal to the blowing direction setting mechanism 52 such as the vertical direction of the blowing device 40 in the foot blowing port 28 is selected.

In short, according to the first embodiment, after the air conditioner switch is turned on, as shown in the timing chart of FIG. 11 and the blowout states of the conditioned air in FIGS. 12 to 16, respectively, According to the air-conditioning state, the blowout port device 40 in the ventilator blowout port 26, which is the upper blowout port, and the blowout port device 40 in the foot blowout port 28, which is the lower blowout port, are driven.

That is, in the warm-up initial state in which the temperature difference ΔT is higher than the first reference temperature T ₁ , the range a in FIG.
As shown in, the blower fan motor applied voltage Vfan is at a Hi level such as 12V, the ventilator door 21 is closed (ventilator outlet 26 off), the foot door 23 opens (foot outlet 28 on), Air-conditioned air is intensively blown toward the foot of the target occupant 80 from the blow-out device 40 in the foot blow-out port 28 (see FIG. 12).

Further, in the warm-up medium-term state in which the temperature difference ΔT is located between the first reference temperature T ₁ and the second reference temperature T ₂ , the blower fan motor applied voltage Vfan is increased as shown in the range b of FIG. It is at the Hi level, and the ventilator door 21 opens (the ventilator outlet 26
ON), the foot outlet 28 is turned on, and the conditioned air is intensively blown from the outlet device 40 in the ventilator outlet 26 toward the thigh of the target occupant 80, and the outlet device 40 in the foot outlet 28 The target occupant 80 is repeatedly blown from the foot to the lower leg while repeatedly being blown out (see FIG. 13).

In the warm-up late state in which the temperature difference ΔT is located between the second reference temperature T ₂ and the third reference temperature T ₃ , the blower fan motor applied voltage Vfan is increased as shown in the range c of FIG. L such as 4V from Hi level
Ventilator outlet 2 on the way to the o level
6 on, foot outlet 28 on, air-conditioning air is blown out from the outlet device 40 in the ventilator outlet 26 toward the target occupant 80 thigh in a diffused state, and the air outlet device 40 in the foot outlet 28 air-conditions. The wind is intensively blown out while being repeated from the foot to the knee of the target occupant 80 (see FIG. 14).

Further, in the transient state in which the temperature difference ΔT is located between the third reference temperature T ₃ and the fourth reference temperature T ₄ , FIG.
As shown in the range d, the blower fan motor applied voltage V
While the fan further decreases toward the Lo level, the ventilator outlet 26 is turned off, the foot outlet 28 is turned on, and the conditioned air is repeatedly emitted from the foot device 40 in the foot outlet 28 from the foot to the lower leg of the target occupant 80. It is blown out in a diffused state (see FIG. 15).

Further, in the steady state in which the temperature difference ΔT is lower than the fourth reference temperature T ₄ , as shown in the range e of FIG.
The blower fan motor applied voltage Vfan becomes Lo level, the ventilator outlet 26 off, the foot outlet 28 on, and the outlet device 40 in the foot outlet 28.
The conditioned air is blown toward the feet of the target occupant 80 in a diffused state (see FIG. 16).

FIG. 17 shows an experimental result when air conditioning is performed at the same time when the engine is started in the vehicle left in the environment of the outside air temperature Ta = -10 ° C. In FIG. 17, the vertical axis is the sensory evaluation amount, and the horizontal axis is the time axis. here,
The sensory evaluation amount is 3: very comfortable, 2: comfortable, 1: somewhat comfortable, 0: neither can be said, -1: rather uncomfortable, -2:
Discomfort, -3: Very uncomfortable. As the air conditioning control, when the control of the first embodiment of the present invention is applied, and when the swing control from the foot to the knee is performed from the beginning, a foot blowout near the center console is made on the lower surface of the dashboard used in the conventional vehicle. 3 shows the results in three cases. In the case of the control of the present invention, the swing blowing is started 15 minutes after the start. From these results, the effect of the present invention is supported. In addition, when swinging from the beginning, it takes time for the foot to warm up, and comfort does not increase so much.

Second Embodiment In the second embodiment, after determining whether the temperature inside the vehicle is unsteady or steady, the outside air is very cold or cold.
It is characterized in that it is discriminated in three stages that are not so cold and the blowout port device 40 is drive-controlled according to the discrimination result. Therefore, this second embodiment is similar to FIG.
Will be described with reference to the flowchart shown in FIG. In the description of the second embodiment, the reference numerals assigned to the names of the constituent parts of the automobile air conditioner are based on FIG.

When the air conditioner switch 46 is turned on and the air conditioning control is started in step 201, in step 202, the constants A to
E and the constants A to H used in this air conditioning control, such as the constants F, G, and H used in the formula for calculating the air mix door opening X, are initialized.

At step 203, the outlet 40
Initialize the time counter used in the drive control. At this time, the initial value of the time counter is 0.

In step 204, the outside air temperature Ta detected by the outside air temperature sensor 37, the detected room temperature Tic detected by the room temperature sensor 36, and the insolation amount S detected by the insolation amount sensor 38.
And the set room temperature T from the room temperature setter 41 operated by the passenger.
Read various data such as set.

In step 205, the temperature difference ΔT = Tic-Tset between the detected room temperature Tic and the set room temperature Tset is calculated as
The blower fan motor applied voltage Vfan is obtained by collating with the blower fan map in the preset control characteristics.

In step 206, the outside air temperature Ta, the detected room temperature Tic, the set room temperature Tset, and the amount of solar radiation S are substituted into the target blow-out temperature formula, Tof = A × Ta + B × Tic + C × Tset + D × S + E, to obtain the target blow-out temperature Tof. Ask for.

At step 207, the target blowing temperature T
The value of of is substituted into the air mix door opening expression, X = F × Tof ² + G × Tof + H, to obtain the air mix door opening X.

At step 208, the target outlet temperature T
Of is collated with the outlet state map in the preset control characteristics to obtain outlet states such as the foot mode, bilevel mode, and vent mode. That is, the heater mode is selected when the target outlet temperature Tof is high, the bi-level mode is selected when the target outlet temperature Tof is medium, and the vent mode is selected when the target outlet temperature Tof is low.

In step 209, it is determined whether the outlet state is the heater mode. When the outlet is in the heater mode (YES in step 209)
Since S) indicates that the target blowout temperature Tof is high and the air conditioner body 1 is in the heating operation, the control process for the blowout port device 40 in steps 210 to 218 described later is performed, and then the process proceeds to step 219. . vice versa,
When the outlet status is other than heater mode (Step 2
If the target blow-out temperature Tof is low, which means that the air conditioner body 1 is in the cooling operation, the routine proceeds to step 219.

In step 219, the blower fan motor applied voltage Vfan is output to the fan motor 12.

At step 220, various actuators 29 for driving the defroster door 20, the ventilator door 22, the foot door 23, etc., with the outlet state signals such as the foot mode, the bi-level mode, and the vent mode calculated by the outlet state map. , 30, 31 are output.

In step 221, steps 210-2 are executed.
A balloon state signal for concentration, diffusion, avoidance, etc., calculated by the control process for the outlet device 40 in 18, is used as a balloon state setting mechanism 51 for concentration, diffusion, avoidance, etc.
And a blowing direction setting mechanism 52 such as a vertical direction.

Thus, one control operation is completed. Then, this control operation returns to step 204 and is repeated again until the air conditioner switch 46 is turned off.

The control process for the outlet 40 by steps 210 to 218 corresponding to the air-conditioning state determining means and the outlet state changing means will be described.

In step 210, steps 216 and 2 are performed.
The time constants t ₁ , t ₂ and t ₃ used in 17 are calculated. These time constants are t _i = a _i Ta as a function of the outside air temperature Ta.
Calculated as + b _i (i = 1, 2, 3). here,
a _i and b _i are constants, and it is determined that a _i <0. The time constant is set so that t ₁ <t ₂ <t ₃ .

At step 211, it is judged whether the temperature difference ΔT = Tset-Tic between the room temperature Tic and the room temperature set value Tset is larger or smaller than the judgment value T ₀ , for example, 2 ° C. Since it means an unsteady state, the routine proceeds to step 212. If not, it means that the air-conditioning state in the vehicle interior is a steady state, so the routine proceeds to step 213.

At step 212, the outside air temperature Ta is compared with a predetermined temperature constant Ta _1, and if Ta <Ta ₁ , the routine proceeds to step 214, and if not, step 213.
Proceed to.

In step 213, the outside air temperature Ta is compared with a predetermined temperature constant Ta _2, and if Ta <Ta ₂ , the process proceeds to step 215, and if not, step 217.
Proceed to. Here, the constant Ta in steps 212 and 213
₁ and Ta ₂ are determined so that Ta ₁ <Ta ₂ .
By these two steps 212 and 213, the outside temperature Ta
The level of coldness is divided into three stages: very cold, cold, and not so cold.

In step 214, if the value t of the time counter is smaller than the time constant t ₂ calculated in 210, the process proceeds to 216, and if not, the process proceeds to 215.

In step 215, if the value t of the time counter is smaller than the time constant t ₃ calculated in 210, the process proceeds to 217, and if not, the process proceeds to 218.

In step 216, the conditioned air is blown toward the foot of the target occupant 80 from the air outlet device 40 in the foot air outlet 28, which is the lower air outlet, until the time t ₁ , and then the air is blown at the foot until the time t _2. Swinging blowing is performed from the blowing device 40 in the mouth 28 from the foot to the knee of the target occupant 80. In the swinging speech from time t ₁ to time t _2, the rate of blowing to the foot of the target occupant 80 and the rate of blowing to the knee are as shown in the right diagram of step 216, from the blowing only to the foot to the knee. We are trying to increase the proportion of speech balloons aimed at. The rocking rate 100% on the vertical axis in this figure means a balloon blown toward the foot, and 0%
Means a blowout toward only the knee, and a rocking rate between them, for example, 60% means that the ratio of air distribution to the legs and knees is 6: 4. This control is performed when the temperature inside the vehicle is unsteady and the outside air is extremely cold.

In step 217, time 0 to time t ₃
The swing blowing is performed from the blower outlet device 40 in the foot blower outlet 28, which is a lower blower outlet, to the target occupant 80 from the foot to the knee. In balloon swing time 0 time t _2, as the ratio blown into the proportion and knees to be blown into the feet shown in step 217, so that the ratio of the balloon is increased toward the knee from the blowing toward only the legs I have to. In balloon swing time t ₂ ~t _3, the ratio to be blown into the proportion and knees blown into foot, so that the proportion of the balloon increases towards the foot. This control performs swinging blow from the beginning when the outside air is cold, and when the air conditioning state in the vehicle interior is unsteady and the outside air is very cold, after the control in step 216 is finished, Control is performed from time t ₂ .

In step 218, the air is blown toward the foot of the target occupant 80 from the air outlet device 40 in the foot air outlet 28 which is the lower air outlet. This control is performed when the control of steps 216 and 217 is completed, or when the air-conditioning state inside the vehicle is in a steady state and the outside air is not so cold.

In short, in the second embodiment, after determining whether the temperature inside the vehicle is in the unsteady state or the steady state, the outside temperature is judged in three stages of very cold, cold and not so cold. When it is extremely cold, the conditioned air is blown toward the foot of the target occupant 80, and then the swing blowing from the foot to the knee is performed. If the outside air is cold, make a swing blow,
If the outside temperature is not so cold, blow air conditioning air toward your feet. The way of swinging from the feet to the knees is to warm the feet and knees and gradually warm the feet after a comfortable feeling is obtained. Therefore, warm air-conditioned air from the foot outlet 28 is used in the passenger compartment. It is controlled so that it does not cause a feeling of haze even if it soars to the upper part of.

Third Embodiment In the third embodiment, the blowout state at the blowout device 40 in the ventilator blowout port 26, which is the upper and lower blowout ports, is made variable, but the blowout in the foot blowout port 28, which is the lower blowout port. A feature of the mouth device 40 is that the blowing state is fixed to either diffusion or concentration. Therefore, this third embodiment will be described based on the flowcharts shown in FIGS. 20, 21, and 22. In the description of the third embodiment as well, the reference numerals assigned to the names of the components as the air conditioner for automobiles are based on FIG.

When the air conditioner switch 46 is turned on and the air conditioning control is started in step 301, the value of 0 is substituted in the variable FT which takes a value of 0 or 1 in step 302.

At step 303, the target blowing temperature T
The constants A to E used in the calculation formula of of and the constants F to G used in the calculation formula of the air mix door opening X, such as constants A to H used in the air conditioning control, are initialized.

At step 304, the outlet 40
Initialize the time counter used in the drive control. At this time, the initial value of the time counter is 0.

In step 305, the outside air temperature Ta detected by the outside air temperature sensor 37, the detected room temperature Tic detected by the room temperature sensor 36, and the insolation amount S detected by the insolation amount sensor 38.
And the set room temperature T from the room temperature setter 41 operated by the passenger.
Read various data such as set.

In step 306, the temperature difference ΔT = Tic-Tset between the detected room temperature Tic and the set room temperature Tset is calculated as
The blower fan motor applied voltage Vfan is obtained by collating with the blower fan map in the preset control characteristics.

In step 307, the outside air temperature Ta, the detected room temperature Tic, the set room temperature Tset, and the amount of solar radiation S are substituted into the target outlet temperature formula, Tof = A × Ta + B × Tic + C × Tset + D × S + E, to obtain the target outlet temperature Tof. Ask for.

At step 308, the target blowing temperature T
The value of of is substituted into the air mix door opening expression, X = F × Tof ² + G × Tof + H, to obtain the air mix door opening X.

At step 309, the target blowing temperature T
Of is collated with the outlet state map in the preset control characteristics to obtain outlet states such as the foot mode, bilevel mode, and vent mode. That is, the heater mode is selected when the target outlet temperature Tof is high, the bi-level mode is selected when the target outlet temperature Tof is medium, and the vent mode is selected when the target outlet temperature Tof is low.

At step 310, it is determined whether the outlet state is the heater mode. Then, when the outlet state is the heater mode (step 310 is YE
Since S) indicates that the target outlet temperature Tof is high and the air conditioner body 1 is in the heating operation, the control process for the outlet device 40 in steps 311 to 324 described below is performed, and then the process proceeds to step 325. . vice versa,
If the outlet status is other than heater mode (step 3
If 10 is NO), it means that the target outlet temperature Tof is low and the air conditioner body 1 is in the cooling operation, so the routine proceeds to step 325.

In step 325, the blower fan motor applied voltage Vfan is output to the fan motor 12.

At step 326, various actuators 29 for driving the defroster door 20, the ventilator door 22, the foot door 23 and the like with the outlet state signals such as the foot mode, the bi-level mode and the vent mode calculated by the outlet state map. , 30, 31 are output.

At step 327, steps 311 to 311 are executed.
The blowout state signal for concentration, diffusion, avoidance, etc. calculated by the control process for the blowout port device 40 at 24 is used for the blowout state setting mechanism 51 for concentration, diffusion, avoidance, etc.
And a blowing direction setting mechanism 52 such as a vertical direction.

Thus, one control operation is completed. Then, this control operation returns to step 305 and is repeated again until the air conditioner switch 46 is turned off.

The control process for the outlet 40 by steps 311 to 324 will be described.

At step 311, steps 319 and 3 are performed.
Time constants t ₁ , t ₂ and t _{3 used} in step 20, and step 32
The time constant t ₄ used in 1 is calculated. These time constants are t _i = a _i Ta + b _i (i
= 1, 2, 3, 4). Where a _i ,
b _i is a constant, and it is determined that a _i <0. The time constant is determined so that t ₁ <t ₂ <t ₃ <t ₄ .

At step 312, it is judged whether the temperature difference ΔT = Tset-Tic between the room temperature Tic and the room temperature set value Tset is larger or smaller than, for example, 2 ° C. as the judgment value T _0. Since it means an unsteady state, the process proceeds to step 313. If not, it means that the air conditioning state in the vehicle interior is a steady state, so the process proceeds to step 314.

In step 313, the outside air temperature Ta is compared with a predetermined temperature constant Ta _1, and if Ta <Ta ₁ , the process proceeds to step 315, and if not, step 314.
Proceed to.

In step 314, the outside air temperature Ta is compared with a predetermined temperature constant Ta _2, and if Ta <Ta ₂ , the process proceeds to step 316, and if not, step 321.
Proceed to. Here, the temperature constants Ta ₁ and Ta ₂ in steps 313 and 314 are determined so that Ta ₁ <Ta ₂ . By these two steps 313 and 314, the cold level of the outside temperature is divided into three stages, that is, very cold, cold, and not so cold.

In step 315, if the value t of the time counter is smaller than the time constant t ₂ calculated in 311, the process proceeds to step 317, and if not, step 316.
Proceed to.

In step 316, if the value t of the time counter is smaller than the time constant t ₃ calculated in 310, the process proceeds to step 318, and if not, step 321.
Proceed to.

In steps 317 and 318, step 3
The variable FT in which 0 is substituted in 02 is rewritten to the value 1. The meaning of the variable FT is step 319 or step 320.
This is a variable that detects whether or not one of the controls is performed. That is, if either of the steps 319 and 320 is controlled, the variable FT = 1, and if not, FT
= 0.

In step 319, the conditioned air is blown toward the foot of the target occupant 80 from the air outlet device 40 in the foot air outlet 28 which is the lower air outlet until the time t ₁ , and then the air is blown at the foot until the time t _2. Swinging blowing is performed from the blowing device 40 in the mouth 28 from the foot to the knee of the target occupant 80. In the swinging speech from time t ₁ to time t _2, the rate of blowing to the foot of the target occupant 80 and the rate of blowing to the knee are as shown in the right figure of step 319, from the blowing toward only the foot to the knee. We are trying to increase the proportion of speech balloons aimed at. The rocking rate 100% on the vertical axis in this figure means a balloon blown toward the foot, and 0%
Means a blowout toward only the knee, and a rocking rate between them, for example, 60% means that the ratio of air distribution to the legs and knees is 6: 4. This control is performed when the temperature inside the vehicle is unsteady and the outside air is extremely cold.

In step 320, time 0 to time t ₃
The swing blowing is performed from the blower outlet device 40 in the foot blower outlet 28, which is a lower blower outlet, to the target occupant 80 from the foot to the knee. In the swinging blowing from time 0 to time t _2, the ratio of blowing to the legs and the ratio of blowing to the knees are as shown in step 320 so that the ratio of blowing from only the legs to the blowing toward the knees increases. I have to. In balloon swing time t ₂ ~t _3, the ratio to be blown into the proportion and knees blown into foot, so that the proportion of the balloon increases towards the foot. This control performs swinging blow from the beginning when the outside air is cold, and when the air conditioning state in the vehicle interior is unsteady and the outside air is very cold, after finishing the control in step 319, Control is performed from time t ₂ .

In step 321, if the value t of the time counter is smaller than the time constant t ₄ calculated in 311, the process proceeds to step 323, and if not, step 322.
Proceed to.

In step 322, if the variable FT is 0, the process proceeds to step 323, and if not, step 32.
Go to 4.

In step 323, the air is blown toward the foot of the target occupant 80 from the air outlet device 40 in the foot air outlet 28 which is the lower air outlet. This control is performed when the value t of the time counter satisfies t ≦ t ₄ . However, even if the value t of the time counter is t <t ₄ , if the control of step 319 or step 320 is not performed, that is, if the vehicle interior is in a steady state and the outside air is not so cold, step 323 is performed. Control.

In step 324, from the outlet device 40 in the ventilator outlet 26, which is the upper outlet, the outlet direction is overhead, the avoiding state is the avoidance outlet, and further, the outlet device 40 in the outlet 28 at the foot. A balloon is blown toward the foot of the target occupant 80. This control is performed when the value t of the time counter satisfies t> t ₄ and the step 319 or the step 3 is performed.
This is performed only when the control of 20 is completed. That is, even when the value t of the time counter is t> t ₄ , the inside of the vehicle is in a steady state and the outside air is not so cold (step 319,
If the control of 320 is not performed), step 32
The control of step 4 is not performed, but the control of step 323 is performed.

In short, according to the third embodiment, the second
This is a new control added to the embodiment. That is,
In steps 319 and 320, from the outlet device 40 in the foot outlet 28, which is the lower outlet, to the second outlet
The same control as in steps 218 and 219 of the embodiment is performed,
For a certain period of time, after the warm air-conditioning air is blown from the blow-out device 40 in the foot blow-out port 28 toward the foot of the target occupant 80, the target occupant 80 is blown from the blow-out device 40 in the ventilator blow-out port 26 serving as an upper blow-out port. The muffled feeling of the occupant is eliminated by blowing the conditioned air having a lower temperature than the blowing air blown from the blowing device 40 in the foot blowing port 28 above the head. However, as described above, when the control of steps 319 and 320 is not performed, there is no blowing toward the knee from the blowing device 40 in the foot blowing port 28,
Since there is little stagnation of the conditioned air in the upper part of the passenger compartment, the blowout device 40 in the ventilator blowout port 26 in the foot mode determined in step 309 is controlled so as not to blow. By controlling in this way, it is possible to positively eliminate the haze after a steady state.

[0120]

According to the first invention, during air conditioning,
Optimum control of the blowing condition and blowing direction of the conditioned air blown out from a plurality of blowing outlets according to the air-conditioning condition of the vehicle cabin, which changes from moment to moment, can improve the comfort of the target occupant throughout the body. , The haze of the head can be suppressed.

According to the second aspect of the present invention, in the early stage of warm-up, the conditioned air is blown out from the lower outlet toward the peripheral part of the lower body of the occupant in a fixed manner. As it is blown from the lower part of the lower part of the occupant while swinging to the trunk of the body, the lower legs, knees, thighs, etc. of the target occupant's feet and knees are still heated, although the local parts such as the feet and knees are still heated. The inconvenience of being cold can be eliminated.

According to the third aspect of the invention, in the warm-up initial stage, in the transient state, and in the steady state, the blowing of the conditioned air from the upper outlet is stopped, and in the middle of the warm-up, the conditioned air is fed from the upper outlet to the trunk of the passenger. In the latter half of the warm-up period, the conditioned air is diffused and blown from the upper air outlet toward the trunk of the occupant of the occupant in the latter half of the warm-up period. The feeling of haze can be surely suppressed.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an entire first embodiment.

FIG. 2 is a perspective view showing the air outlet device of the first embodiment.

FIG. 3 is a front view showing a concentrated blowing state of the blowing port device according to the first embodiment.

FIG. 4 is a front view showing a diffusion blowout state of the blowout port device of the first embodiment.

FIG. 5 is a front view showing an avoidance blowing state of the blowing port device according to the first embodiment.

FIG. 6 is a plan view showing a concentrated blowing state of the first embodiment.

FIG. 7 is a plan view showing a diffusion blowing state of the first embodiment.

FIG. 8 is a plan view showing the avoidance blowing state of the first embodiment.

FIG. 9 is a flowchart of the first embodiment.

FIG. 10 is a flowchart of the first embodiment.

FIG. 11 is a timing chart of the first embodiment.

FIG. 12 is an operation explanatory view in the warm-up initial state when the air-conditioning state in the vehicle compartment of the first embodiment.

FIG. 13 is an operation explanatory view when the air-conditioning state in the vehicle compartment of the first embodiment is in a warm-up mid-term state.

FIG. 14 is an operation explanatory view when the air-conditioning state in the vehicle interior of the first embodiment is in a warm-up late state.

FIG. 15 is an operation explanatory view when the air conditioning state in the vehicle interior of the first embodiment is in a transient state.

FIG. 16 is an explanatory diagram of an operation when the air conditioning state in the vehicle interior of the first embodiment is a steady state.

FIG. 17 is a diagram showing experimental results of the first example.

FIG. 18 is a flowchart of the second embodiment.

FIG. 19 is a flowchart of the second embodiment.

FIG. 20 is a flowchart of the third embodiment.

FIG. 21 is a flowchart of the third embodiment.

FIG. 22 is a flowchart of the third embodiment.

FIG. 23 is a chart showing a general comfort category scale.

FIG. 24 illustrates a general comfort and temperature sensation category scale.

FIG. 25 is a diagram showing a relationship between a comfortable sensation and a comfort level with respect to a temperature of a naked subject when a room is heated to a certain temperature.

FIG. 26 is a diagram showing a relationship between a feeling of warmth and a feeling of comfort with respect to an average skin temperature when a subject is exposed to cold.

FIG. 27 is a diagram showing the relationship between the skin temperature of each part and the average skin temperature with respect to the temperature.

FIG. 28 is a diagram showing the skin temperature of each site when the environmental temperature is 10 ° C., 20 ° C., and 30 ° C.

FIG. 29 is a diagram showing how the whole body thermal sensation changes by changing the thermal sensation from 0 to +4 in a part of the body at an environmental temperature of 10 ° C.

[Explanation of symbols]

1 ... Air conditioner main body 26 ... Ventilator outlet (upper outlet) 28 ... Foot outlet (lower outlet) 40 ... Outlet device 51 ... Outlet state setting mechanism (wind direction setting means such as concentration / diffusion / avoidance) 52 ... Blowout direction setting mechanism (upward / downward wind direction setting means)

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Mitsuaki Hagino 2 Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd.

Claims (3)

[Claims] 1. Air-conditioned air, the temperature of which is adjusted based on thermal environment information inside and outside the vehicle such as detected room temperature, outside air temperature, solar radiation, set room temperature, etc., from a plurality of outlets arranged above and below the vehicle interior. In an air conditioner for an automobile, which blows out into a room to air-condition the inside of a vehicle, a wind direction setting means capable of setting a concentrated blowing state in which the conditioned air is concentratedly blown out to a target occupant from the plurality of outlets; A wind direction setting means capable of setting a diffused blowing state in which the conditioned air is blown to the target occupant with a feeling of airflow from the air outlets, and a wind direction setting means configured to blow the conditioned air in a vertically swingable manner from the plurality of air outlets. An air-conditioning state determination means that has at least two and determines whether the air-conditioning state in the vehicle compartment is initial, transient, or steady during air-conditioning, and a judgment from this air-conditioning state determination means. An air conditioner for an automobile, comprising: a blowout state changing unit that synchronously drives the at least two wind direction setting units according to a disconnection result. 2. The at least two wind direction settings for fixing the conditioned air blown from the lower blow-off port toward the peripheral part of the lower half of the occupant of the occupant in the warm-up initial stage from the air-conditioning state determination means to the blow-out state changing means. Means for driving the means in synchronism, and means for driving the at least two wind direction setting means in synchronism so as to transfer the conditioned air blown from the lower outlet from the peripheral part of the lower body of the occupant to the trunk of the body except at the warm-up initial stage The vehicle air conditioner according to claim 1, wherein 3. A door that opens and closes a blowout of conditioned air from the upper outlet into the passenger compartment is provided, and the blowout state changing means has the door in the initial warm-up state from the air-conditioning state judging means, and in the transient and steady states. The door is closed during the warm-up middle period and the warm-up late period, while the air-conditioning wind blown from the upper outlet is concentratedly blown toward the occupant's body trunk during the warm-up mid period. A means for driving the concentrated wind direction setting means is provided, and in the latter half of warming up, means for driving the diffused wind direction setting means is provided so as to diffuse and blow out the conditioned air blown from the upper outlet toward the trunk of the occupant's body. The air conditioner for an automobile according to claim 1, wherein the air conditioner is an automobile.