JP2001191782A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a miniaturizable air conditioner for a vehicle with improved space utilizing efficiency of an air conditioning case. SOLUTION: A foot opening part 27, a center face opening part 22, and side face opening parts 24, 25 are installed in the downstream part of as heater core 13, a face door 26 for opening and closing these opening parts 22, 24, 25 is installed on the upstream air sides of the center face opening part 22 and the side face opening parts 24, 25, a foot door 28 for opening and closing the foot opening part 27 is installed on the upstream air side of the foot opening part 27. Opening parts 24a, 25a communicating with the side face opening parts 24, 25 on both end sides are formed in the face door 26, and in a foot blow-out mode closing the center face opening part 22 and fully opening the foot opening part 27, the foot door 28 is fully opened so as to cover a part of each of the opening parts 24a, 25a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is arranged at both left and right end portions of an instrument panel in a vehicle cabin, and blows cool air toward the head of an occupant during cooling, and blows warm air toward a vehicle side window glass during heating. The present invention relates to a structure for distributing conditioned air to a side face outlet in a vehicle air conditioner having a side face outlet for preventing fogging.

[0002]

2. Description of the Related Art Conventionally, in a vehicle air conditioner of this type, a side face outlet blows cold air toward the head of an occupant during cooling, and blows warm air toward a vehicle side window glass during heating. In order to prevent fogging, conditioned air is blown out in the full blowout mode. For this reason, in the air conditioning unit of the vehicle air conditioner, it is necessary to provide a side face opening at a portion where the conditioned air after temperature control can be constantly taken out regardless of the change of the blowing mode, and connect the side face outlet. There is.

Incidentally, it is desirable that the amount of air blown from the side face air outlet can be adjusted by the air blow mode. Particularly, in the foot blowing mode during heating, if warm air is blown toward the occupant's head side, the comfort may be deteriorated, so that the warm air from the side face outlet may prevent fogging of the vehicle side window glass. It is desirable that the air volume be as small as possible. However, in order to actively clear the window glass when the window glass becomes cloudy when the window glass becomes cloudy when the window glass becomes cloudy during winter or when the window glass becomes cloudy when running in the foot blowing mode in cold weather etc. In the defroster mode selected in (1), the amount of blown air differs depending on the purpose.

Therefore, there is a prior art in which the amount of blown air is changed between a face blowing mode in which cool air is blown to the occupant's head and a foot blowing mode in which warm air is directed at a vehicle side window glass to prevent fogging. For example, there is one disclosed in Japanese Patent Application Laid-Open No. H10-166838. In this publication, an air conditioning unit is provided with left and right side face openings and left and right auxiliary side face openings communicating with left and right side face outlets. The former side face opening communicates with the left and right face outlets in the full blowing mode, and the latter auxiliary side face opening is used in the face blowing mode and the bi-level blowing mode in the blowing mode. In addition, it is configured to communicate with the left and right face air outlets so as to increase the amount of air blown out compared with other air blowout modes.

[0005]

However, in the above conventional configuration, a plurality of side face openings are provided at different positions in order to adjust the amount of air blown out from the side face openings according to the blow mode. Therefore, a space for arranging a duct connected to the side face outlet on the vehicle side and a space for arranging the side face opening in the air-conditioning case are required, resulting in poor space utilization efficiency.

[0006] In view of the above, an object of the present invention is to provide
It is an object of the present invention to provide a vehicle air conditioner capable of improving the space utilization efficiency of an air conditioning case and reducing the size.

[0007]

In order to achieve the above object, the technical means according to claims 1 to 4 are adopted.

That is, according to the first aspect of the present invention, the air conditioner is formed on the downstream side of the heating heat exchanger (13) for heating the air, and is connected to the foot outlet for blowing the conditioned air toward the feet of the occupant in the vehicle. A center face opening (22) connected to a foot opening (27) and a center face outlet that blows out conditioned air from the center of the passenger compartment toward the occupant head.
And side face openings (24, 25) connected to side face outlets for blowing conditioned air from both left and right end portions of the passenger compartment toward the occupant head side or the vehicle side window glass.
And a face arranged upstream of the center face opening (22) and the side face openings (24, 25) to open and close the center face opening (22) and the side face openings (24, 25). A door (26);
A vehicular air-conditioning system including a foot door (28) disposed upstream of the foot opening (27) in the air and opening and closing the foot opening (27), wherein the face door (26) includes a face door (26). ) Is the center face opening (2
2) When the side face openings (24, 25) are closed, openings (24a, 25a) for communicating the side face openings (24, 25) are provided, and a foot opening (24) is provided by the foot door (28). The opening degree of the openings (24a, 25a) can be adjusted according to the open / close state of 27).

According to the first aspect, the side face openings (24, 25) communicate with the face door (26) that opens and closes the center face opening (22) and the side face openings (24, 25). Openings (24a, 25
By providing a) and adjusting the opening degree in the open / closed state of the foot door (28), it is possible to adjust the amount of air blown out from the side face outlet in each blowout mode. As a result, the side face openings (24, 25) conventionally provided at different positions can be eliminated, so that the space for arranging the duct leading to the side face outlet can be reduced, and the space utilization efficiency can be improved and the size can be reduced. It becomes possible.

According to the second aspect of the present invention, the face door (2
6), openings (24a, 25a) communicating with the side face openings (24, 25) are formed so that the face opening (22) is closed and the foot opening (27) is fully opened in a foot blowing mode. , Foot door (28) is opened (2
4a, 25a).

According to the second aspect of the present invention, in the foot blowing mode, the opening (24a, 25) communicating with the side face opening (24, 25) in the face door (26).
a) is formed, and a part of the opening (24a, 25a) is covered with a foot door (28).
4a, 25a), the opening area is reduced, and the amount of air blown from the side face outlet can be set to a predetermined amount. Thus, the fogging of the window glass on the side of the vehicle can be prevented, and the comfort does not deteriorate.

In a foot defroster blowing mode in which the foot door (28) is half-opened while the face door (26) is fully closed, the amount of air blown out from the side face outlet is slightly increased, and the face door (26) is fully opened. In the defroster blowing mode in which the foot door (28) is fully opened with the door closed, the appropriate blowing air volume can be easily adjusted according to the open / closed state of the foot door (28) for each blowing mode.

According to the third aspect of the present invention, the air conditioning case (11)
A center face opening (22) and a defroster opening (20) are disposed on the upper surface of the vehicle in the front-rear direction of the vehicle, and left and right side face openings (24) are provided in the vehicle left-right direction of the center face opening (22). , 25) are arranged.

According to the third aspect of the invention, by arranging the side face openings (24, 25) in the vehicle left-right direction of the center face opening (22), the depth dimension of the vehicle in the front-rear direction can be reduced. The size can be reduced.

According to the fourth aspect of the present invention, in the bi-level blowing mode in which both the center face opening (22) and the foot opening (27) are simultaneously opened, the face door (2) is opened.
6) is characterized in that the door opening is set to fully open and the air flow is distributed according to the door opening of the foot door (28).

According to the fourth aspect of the present invention, the air volume distribution in the bi-level blowing mode can be performed by setting the door opening of the face door (26) to the full opening and the door opening of the foot door (28) to the half opening. Since the link mechanism of the face door (26) is only fully opened and fully closed, the link mechanism can be simplified.

The reference numerals in parentheses of the above means indicate the correspondence with the specific means described in the embodiment described later.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
The description will be made based on Nos. The ventilation system of the vehicle air conditioner of the present embodiment is roughly divided into two parts, a blower unit (not shown) and an air conditioning unit 10. The blower unit is offset from the center of the instrument panel below the passenger compartment to the passenger seat side.
The air-conditioning unit 10 is disposed at a substantially central portion in the vehicle left-right direction in a lower portion of the instrument panel in the vehicle interior.

As is well known, the blower unit is composed of a blower that sucks air and blows air through an inside / outside air switching box for switching and introducing inside air (vehicle interior air) and outside air (vehicle outside air). This blower drives a well-known centrifugal multi-blade fan (sirocco fan) with an electric motor. The air-conditioning unit 10 is of a type in which an evaporator (cooling heat exchanger) 12 and a heater core (heating heat exchanger) 13 are both integrally incorporated in one common air-conditioning case 11. The air-conditioning case 11 is made of a molded article of a resin such as polypropylene having a certain degree of elasticity and excellent strength. The air-conditioning case 11 is composed of a plurality of divided cases.
3. After storing devices such as a control door to be described later, the air conditioning unit 10 is integrally connected by fastening means such as metal spring clips and screws.

The air-conditioning unit 10 is arranged in the form shown in FIG. 1 in the front and rear, left and right and up and down directions of the vehicle at substantially the center of the lower part of the instrument panel in the passenger compartment. An air inlet 14 is formed at a portion on the front side of the vehicle. The conditioned air blown from the blower unit flows into the air inlet 14. The air inlet 14 is open on the side of the air-conditioning case 11 on the side of the passenger seat for connection to the air outlet of a blower unit disposed at the front part of the passenger seat.

The evaporator 12 is disposed in the air conditioning case 11 immediately after the air inlet 14. This evaporator 1
Numeral 2 is arranged in a vertical direction so as to cross the passage in the air conditioning case 11 in a thin form in the front-rear direction of the vehicle. Therefore, the blast air from the air inlet 14 flows into the front surface of the evaporator 12 extending in the vehicle vertical direction. As is well known, the evaporator 12 cools the conditioned air by absorbing the latent heat of evaporation of the refrigerant in the refrigeration cycle from the conditioned air.

A heater core 13 is disposed at a predetermined interval on the downstream side of the air flow of the evaporator 12 (on the rear side of the vehicle). The heater core 13 is disposed at a lower side in the air conditioning case 11 so as to be inclined toward the vehicle rear side. The heater core 13 reheats the cold air that has passed through the evaporator 12, in which high-temperature hot water (engine cooling water) flows, and heats the air using the hot water as a heat source.

In the air passage in the air-conditioning case 11, a cool air bypass passage 15 through which the air (cool air) flows bypassing the heater core 13 is provided above the heater core 13.
Are formed. Further, the heater core 13 and the evaporator 12
A flat air mix door 16 that adjusts the mixing ratio of the warm air heated by the heater core 13 and the cool air that bypasses the heater core 13 through the cool air bypass passage 15 is disposed at a location between the air mix door 16. .

Here, the air mix door 16 is integrally connected to a rotating shaft 16a arranged in the horizontal direction, and is rotatable in the vertical direction of the vehicle together with the rotating shaft 16a. The air mix door 16 constitutes a temperature adjusting means for adjusting the temperature of the air blown into the vehicle compartment by adjusting the mixing ratio. The rotating shaft 16a is rotatably supported by the air-conditioning case 11, and one end of the rotating shaft 16a projects outside the air-conditioning case 11 and is connected to a link mechanism (not shown). , Etc.).

In the air-conditioning case 11, a wall surface 17 extending in the vertical direction at a predetermined interval from the heater core 13 is provided downstream of the heater core 13 (portion on the rear side of the vehicle). Is molded. The wall surface 17 forms a warm air passage 18 that extends upward immediately after the heater core 13. In the air-conditioning case 11, an air mixing section 19 that mixes cold air and hot air is formed on the downstream side (upper side) of the cool air bypass passage 15 and the hot air passage 18 in the air.

On the upper surface of the air-conditioning case 11, a defroster opening 20 is formed on the front side of the vehicle at a position above the cold air bypass passage 15 and the air mixing section 19 in the vehicle front direction and is formed substantially horizontally. Have been. The defroster opening 20 receives air-conditioned air whose temperature is controlled from the air mixing unit 19, and is connected to a defroster outlet through a defroster duct (not shown). Blow the wind toward the inside.

The entrance hole 20a provided in the passage leading to the defroster opening 20 is opened and closed by a flat defroster door 21. The defroster door 21 has an entrance hole 20a.
And is rotatably supported by a rotating shaft 21a horizontally disposed adjacent to the upper end of the evaporator 12 near the upper surface of the air conditioning case 11.

Next, on the upper surface of the air conditioning case 11,
A center face opening 22 is provided adjacent to the defroster opening 20 and on the vehicle rear side (closer to the occupant) than the defroster opening 20. The controlled conditioned air flows in through the air passage 23. The center face opening 22 is connected via a face duct (not shown) to a center face air outlet located above the center in the left and right direction of the instrument panel. Blow the wind towards.

Further, as shown in FIG. 2, left and right side face openings 24 and 25 are opened on both sides of the center face opening 22 in the vehicle left-right direction.
Air-conditioned air whose temperature is controlled from the air mixing section 19 flows into the left and right side face openings 24 and 25 through the air passage 23. The left and right side face openings 24 and 25 are connected via left and right side face ducts (not shown) to left and right side face outlets disposed above the left and right end portions of the instrument panel. The wind is blown out toward the occupant's head or the side window glass at the left and right ends of the passenger compartment. As is well known, the side face outlet is provided with a wind direction changing device which is manually operated. By adjusting the direction of the wind direction plate of the wind direction changing device, the blown air is blown to the occupant head side at the left and right ends of the vehicle interior or the vehicle side window. It is possible to blow wind toward the glass.

The entrance hole 22a and the side face opening 2 provided in the passage leading to the center face opening 22
Entrance holes 24a, 25a provided in the passage leading to 4, 25
Is opened and closed by a flat face door 26. The face door 26 is disposed upstream of the entrance holes 22a, 24a, and 25a in the air, and the defroster door 21 is connected to the entrance hole 20a.
is rotatably supported by a rotating shaft 26a disposed substantially horizontally adjacent to the tip of the defroster door 21 at a position where the a is completely closed.

As shown in FIG. 3, openings 24a, 25a are provided at both ends of the face door 26 in the vehicle left-right direction at positions facing the side face openings 24, 25.
Is formed. The face door 26 closes the center face opening 22 when the entrance holes 22a, 24a, and 25a are fully closed, but the left and right side face openings 24 and 25 are closed by the opening 24 of the face door 26.
a and 25a and communicate with the air passage 23.

The size of the opening areas of the openings 24a and 25a is such that the opening of the defroster door 21 is fully opened, that is, the defroster door 21 is fully opened, and the face door 26 is fully closed of the entrance holes 22a, 24a and 25a. And
When a foot door 28, which will be described later, completely closes the foot opening 27, the left side face opening 24 has about 15%
The air volume distribution is set to be about 70% to the defroster opening 20 and to about 15% to the right side face opening 25.

Next, in the air-conditioning case 11, a foot opening 27 is opened at a position above the operating range of the face door 26 on the rear side of the vehicle. Air-conditioned air whose temperature is controlled from the air mixing section 19 flows into the foot opening 27 through the air passage 23. A foot passage 29 is formed downstream of the foot opening 27 in the air, and a front seat foot passage 30 is opened at an intermediate portion of the foot passage 29. The conditioned air from the foot passage 30 is blown out to the feet of the occupant in the front seat through a front seat foot duct (not shown) and a front seat foot outlet.

A not-shown rear seat foot duct and a rear seat foot outlet are connected to an open end 31 formed in a lower portion of the foot passage 29, and the rear seat foot outlet is connected through the rear seat foot outlet. Blows out the wind at the passenger's feet.

The foot opening 27 is opened and closed by a flat foot door 28. This foot door 28
Is located upstream of the foot opening 27 on the air side, and when the face door 26 fully closes the inlet holes 22a, 24a, 25a, the rotating shaft 28a is disposed horizontally near the tip 26b of the face door 26. And are rotatably supported.

Here, the defroster door 21 is connected to the entrance hole 20.
a is slightly opened, and the face door 26 is inserted into the entrance hole 22a,
In the foot blowing mode in which the foot doors 28 are fully closed and the foot doors 28 fully open the foot openings 27, a part of the foot doors 28 is partially closed with the openings 24a, 2a of the face door 26.
5a so as to reduce a part of the opening area.
This is to reduce the flow rate of the conditioned air passing through 4a and 25a.

The operating range of the foot door 28 is configured so as to share the operating range of the face door 26 so as not to interfere with each other.

Next, in the foot defroster blowing mode, the doors of the defroster door 21 and the foot door 28 are almost half open while the face door 26 is fully closed (FIG. 1).
(The positions indicated by dashed lines 21c and 28c), and the opening 24 of the face door 26 by a part of the foot door 28.
a, 25a, the aperture amount is slightly reduced.
The passing air volume of 4a and 25a is slightly increased. Further, in the defroster blowing mode, the airflow distribution is set as described above by the foot door 28 fully closing the foot opening 27.

Here, the defroster door 21, the face door 26 and the foot door 28 are control door means for switching the blowing mode, and are connected to a link mechanism (not shown) to switch the blowing mode (actuator such as a servomotor). Are operated in conjunction with each other. One end of each of the rotation shafts 21a, 26a, 28a of each control door projects outside the air conditioning case 11.

Then, the control doors 16, 21,
26 and 28 each have the same structure as a single unit, and have a resin or metal door substrate integrally connected to each of the rotating shafts 16a, 21a, 26a and 28a, and urethane on both front and back surfaces of this substrate. It has a structure in which an elastic sealing material such as a foam is stuck.

Next, the operation of the present embodiment in the above configuration will be described. As is well known, an air conditioner for a vehicle is provided with operation signals from various operation members provided on an air conditioning operation panel and various types of air conditioning control. An electronic control unit (not shown) to which a sensor signal from a sensor is input is provided, and each control door 16, 21, 2,
The positions of 6, 28 are controlled. The temperature of the air blown into the cabin is adjusted by using the air mix door 16 to determine the air volume ratio between the cool air cooled by the evaporator 12 and directly flowing to the cool air bypass passage 15 side and the warm air heated by the heater core 13. Adjusted and done. Then, the cold air and the hot air are supplied to the air mixing unit 1.
After being mixed at 9, the air is blown out to a predetermined portion in the vehicle compartment according to the blow-out mode.

FIG. 1 shows a state in which the foot blowing mode is set.
6, the defroster opening 20 and the foot opening 27 are both opened, and the face door 2 is closed.
6 are also partially open, so that the side face openings 24 and 25 are also in communication. Accordingly, the conditioned air from the blower unit (not shown) blows out toward the feet of the occupant through the foot opening 27 and the front window glass and the vehicle side window through the defroster opening 20 and the side face openings 24 and 25. Blow out into the glass.

Here, this blowing mode is a mode selected mainly for heating in winter, in which warm air is directed toward the feet of the occupant and blows out, and a part of the warm air is applied to the front and side window glasses. This is to prevent the temperature of the glass from lowering and prevent the window glass from fogging. If the amount of air blown from the defroster outlet and the side face outlet is too large, the temperature on the face side of the occupant may increase and give an uncomfortable feeling. It is necessary to reduce the blowing air volume more than usual.

Therefore, the foot door 28, the defroster door 21, and the face door 26 (openings 24a, 25a)
The air volume distribution among the air volume blown out to the feet of the occupant, the air volume blown out to the front window glass, and the air flow volume blown out to the side window glass is 65: 15: 2.
It is operated so as to be about 0. In the present embodiment, the defroster door 21 is operated to a position where the defroster opening 20 is slightly opened as shown in FIG.
By operating such that a part of the opening area of the openings 24a and 25a of the face door 26 is narrowed at a position where the foot door 28 is fully opened, the air volume distribution of the blown air volume is achieved.

In the foot blowing mode shown in FIG. 1, the air mixing door 16 is operated to the maximum heating position, but the air mixing door 16 is rotated from the maximum heating position to the maximum cooling position. This makes it possible to arbitrarily adjust the blown air temperature.

Next, in the foot defroster blowing mode, which is the blowing mode selected when the window glass becomes cloudy while running in the cold blowing mode in the foot blowing mode, the amount of air blown to the feet of the occupant and the air blown to the front window glass. The operation is performed so that the air volume distribution between the air volume and the air volume blown out to the side window glass is about 35:35:30. By setting the defroster door 21 to the half-open position (position indicated by 21c) and the foot door 28 to the half-open position (position indicated by 28c), the openings 24a and 25a sides of the face door 26 are opened, and the window is opened more than in the foot blowing mode. Heating the cabin while increasing the air flow to the glass to prevent fogging.

Next, in the defroster blowing mode, which is a blowing mode selected for positively clearing the window glass when the winter window glass becomes cloudy and cannot travel, the defroster door 21 is fully opened and the foot door 26 is opened. By fully closing, there is no obstruction of the foot door 28 in the air passage 23, so that the opening 24
The above-mentioned predetermined airflow flows through a and 25a, and the airflow distribution between the airflow to the front window glass and the airflow to the side window glass is controlled to be about 70:30.

Next, in the face blowing mode, which is the blowing mode selected mainly during cooling in summer, the defroster door 21 and the foot door 28 are fully closed, and the face door 26 is fully opened. On the other hand, the air mix door 16
Normally, the operation is performed in a region where the air flowing into the heater core 13 is reduced to zero or a small amount. As a result, the air blown from a blower unit (not shown) is cooled by the evaporator 12 to become cool air, and this cool air is passed from the cool air bypass passage 15 to the air mixing section 1.
9. The air is fed into the center face opening 22 and the side face openings 24 and 25 through the air passage 23, and blows out from the center face outlet and the left and right side face outlets toward the occupant's head. The air volume distribution at this time is operated so that the ratio between the center face air volume and the side face air volume is about 50:50.

Next, in the bi-level blowout mode, which is intended mainly for the middle period such as spring and autumn, aiming at head and foot heat, the defroster door 21 is fully closed, the face door 26 is fully opened, and the foot door 28 is half-opened. By doing
The operation is performed so that the ratio of the amount of air blown out toward the head of the occupant and the amount of air blown out toward the foot of the occupant is about 50:50. At this time, the air volume distribution described above can be adjusted only by the opening degree of the foot door 28.

In the face blowing mode and the bi-level blowing mode, since the face door 26 is fully opened, the opening 24a of the face door 26,
25a is not used, but is set by the ratio of the opening area of the center face opening 22 and the side face openings 24 and 25 so that the air volume distribution between the center face blowing air volume and the side face blowing air volume is about 50:50. ing.

According to the present embodiment, the face door 26 for opening and closing the center face opening 22 and the side face openings 24 and 25 is provided with the side face opening 2.
By providing openings 24a and 25a for communicating the nozzles 4 and 25 and adjusting the opening degree in the open / closed state of the foot door 28, it is possible to adjust the amount of air blown out from the side face outlet in each blowout mode. This eliminates the side face opening conventionally provided at a different position, so that the space for disposing the duct leading to the side face outlet can be reduced, the space utilization efficiency can be improved, and the size can be reduced.

In the foot blowing mode in which the amount of air blown from the side face air outlet is desired to be reduced, openings 24a and 25a communicating with the side face openings 24 and 25 are formed in the face door 26, and these openings are formed. 24a, 2
By covering a part of 5a with the foot door 28, the opening area of the openings 24a and 25a is reduced, and the amount of air blown out from the side face outlet can be set to a predetermined amount. Thus, the fogging of the window glass on the side of the vehicle can be prevented, and the comfort does not deteriorate.

In the foot defroster blowing mode in which the foot door 28 is half-opened 28c while the face door 26 is fully closed, the amount of air blown from the side face air outlet is slightly increased, and the foot door 26 is fully closed. In the defroster blowing mode in which the opening 28 is fully opened, the appropriate blowing air volume can be easily adjusted in accordance with the open / close state of the foot door 28 for each blowing mode, for example, by further increasing the amount.

Further, by arranging the side face openings 24 and 25 in the vehicle left-right direction of the center face opening 22, the depth dimension of the vehicle in the front-rear direction can be reduced and the size can be reduced.

Further, since the air volume distribution in the bi-level blowing mode can be achieved by setting the door opening of the face door 26 to full opening and the door opening of the foot door 28 to half opening,
Since the link mechanism of the face door 26 is only fully opened and fully closed, the link mechanism can be simplified.

(Other Embodiments) In the above embodiment, the formation of the openings 24a and 25a was described by opening both ends of the face door 26. However, the present invention is not limited to this, and as shown in FIG. Both ends of the face door 33 may be cut out to form openings 34a and 35a.

The side face openings 24 and 25 are formed on both sides in the vehicle left-right direction with respect to the center face opening 22. However, the present invention is not limited to this. 34a and 35a may be formed in accordance with this.

Further, in the above embodiment, the side face openings 24, 25 are provided on the left and right, respectively. However, only one side face opening 24, 25 is provided, and the duct connected to this opening is branched to form the left and right sides. May be guided to the side face outlet.

In the above embodiment, the operation of each control door is driven by an actuator such as a servomotor via a link mechanism. However, a temperature control lever, a blowout mode switching lever, etc. provided on an air conditioning operation panel are described. Each of the control doors may be operated via an operation cable or the like by a manual operation force applied to the manual operation member of (1).

In the above embodiment, each control door 1
6, 21, 26, and 28 have the same structure in a single state, and each rotating shaft 16a, 21a, 26a, 28a
It has been described that it has a structure in which a resin or metal door substrate is integrally bonded to the substrate, and an elastic sealing material such as urethane foam is adhered to both front and back surfaces of the substrate. A door substrate having a structure in which no material is attached may be used.

Further, the blow mode switching means is driven manually by a user using a control lever to drive the blow mode switching means. However, an air conditioner equipped with an automatic air conditioner which automatically controls the blow mode switching means is provided. Is also applicable.

The present invention can of course be similarly applied to an air conditioner in which the evaporator (cooling heat exchanger) 12 is not provided in the air conditioning unit 10 and a vehicle air conditioner of the reheating type.

[Brief description of the drawings]

FIG. 1 is a sectional view of an air conditioning unit of a vehicle air conditioner according to an embodiment of the present invention, showing a state of a foot blowing mode.

FIG. 2 is a top view of the air conditioning unit of FIG.

FIG. 3 is a perspective view showing a face door according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a face door according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Air-conditioning case 13 ... Heater core (heating heat exchanger) 20 ... Defroster opening 22 ... Center face opening 24, 25 ... Side face opening 24a, 25a ... Opening 26 ... Face door 27 ... Foot opening 28 ... Foot door

Claims (4)

[Claims] 1. An air conditioning case (11) forming an air passage.
A heating heat exchanger (13) installed in the air-conditioning case (11) to heat the air; and a heating heat exchanger (13) formed downstream of the heating heat exchanger (13), facing the passenger's feet. A foot opening (27) connected to a foot outlet that blows out conditioned air, and is formed downstream of the heating heat exchanger (13). A center face opening (22) connected to a center face outlet that blows air, and a side connected to a side face outlet that blows conditioned air from the left and right ends of the passenger compartment toward the occupant head or the vehicle side window glass A face opening (24, 25), an air upstream of the center face opening (22) and the side face opening (24, 25), and the center face opening (22) and Face door for opening and closing Id face opening portion (24, 25) (2
6), a foot door (28) arranged on the air upstream side of the foot opening (27) to open and close the foot opening (27).
And when the face door (26) closes the center face opening (22) and the side face openings (24, 25), An opening (24a, 25a) for communicating the opening (24, 25) is provided, and the foot opening (2) by the foot door (28) is provided.
7) The opening (24a, 25a) according to the open / closed state of
An air conditioner for a vehicle, wherein the degree of opening of the vehicle is adjustable. 2. An opening (24a, 25a) communicating with the side face opening (24, 25) is formed in the face door (26), and the face opening (22) is closed and the foot is closed. The foot door (28) is configured to be fully opened so as to cover a part of the opening (24a, 25a) in a foot blowing mode in which the opening (27) is fully opened. Vehicle air conditioner. 3. The center face opening (22) and the defroster opening (20) are arranged on the upper surface of the air conditioning case (11) in the front-rear direction of the vehicle, and the center face opening (22) is provided. The vehicle air conditioner according to claim 1 or 2, wherein left and right side face openings (24, 25) are arranged in the vehicle left-right direction. 4. The face door (26) in a bi-level blowing mode in which both the center face opening (22) and the foot opening (27) are simultaneously opened.
4. The apparatus according to claim 1, wherein the door opening is set to fully open, and the air flow is distributed according to the door opening of the foot door (28). A vehicle air conditioner according to claim 1.