JPH10324141A - Vehicular air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize the unit body of a vehicular air conditioner, and reduce the pressure loss in a unit ventilation system. SOLUTION: In the air conditioner, a film-like mode door 38 which can slide along the wall faces of plural blowoff opening parts 20 to 37 and which has opening parts capable of being opened into the plural blowoff opening parts 20 to 37, is used. At the inlet parts of the face blowoff opening parts 24 to 35, a heating-heat exchanger 19 is arranged in the direction crossing the face blowoff opening parts 24 to 35 at about right angles. When the room is air-cooled to a maximum in a face mode, the flows of cold air are formed on both upper and lower sides of the heating-heat exchanger 19 by temperature adjusting doors 17a to 17d, and the flows of cold air on both sides are allowed to about linearly flow in the face blowoff opening parts 20 to 37. Thus, the pressure loss in a cold air passage can be remarkably reduced and the quantity of cold air at the time when the room is air-cooled to a maximum, can also be remarkably increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle in which a unit size is reduced and a pressure loss in a unit ventilation system is reduced.

[0002]

2. Description of the Related Art Conventionally, in an air conditioning system for a vehicle, an air conditioning unit having a cooling evaporator, a heating heater core, a blowing mode switching mechanism, and the like is incorporated when an air conditioning unit is arranged near an instrument panel in front of a vehicle compartment. And a layout in which a blower unit that blows conditioned air to the air conditioning unit is offset to a passenger seat side of the air conditioning unit, while being arranged at a substantially central portion of the instrument panel in the vehicle left-right direction. I have.

[0003] A defroster blow-off opening for passing the temperature-conditioned air passing through the heater core for heating to the inner surface of the vehicle window glass is disposed above the air-conditioning unit.
A foot outlet for blowing out the conditioned air to the feet of the occupant is disposed below the air conditioning unit. Also,
A face blowing opening for blowing conditioned air toward the occupant's head is disposed above the air conditioning unit.

[0004] Further, the control of the temperature of the air blown into the cabin is performed by:
Normally, an air mix method is employed in which the ratio of the amount of hot air that passes through the heater core for heating and the amount of cool air that bypasses the heater core for heating is adjusted.

[0005]

However, in the above-mentioned conventional apparatus, in order to ensure mixing of cold and hot air, etc., the air downstream side passage of the heating heater core is moved from the lower part of the air conditioning unit.
It is bent so as to be guided to the upper side of the defroster blowing opening and the face blowing opening. As described above, since the air downstream side passage of the heating heater core is largely bent from the lower part to the upper part of the air conditioning unit, the pressure loss of the ventilation system is inevitably increased, and the blower is increased in size. There is a problem that the noise increases.

In particular, at the time of maximum cooling, an increase in the air flow is required to increase the cooling capacity. However, the increase in the pressure loss of the ventilation system hinders the increase in the air flow during the maximum cooling.
In addition, there is a problem that the air flow path space in the air conditioning unit is increased and the air conditioning unit is enlarged.
The present invention has been made in view of the above points, and has as its object to reduce the size of a unit of a vehicle air conditioner and reduce the pressure loss of a unit ventilation system.

[0007]

In order to achieve the above object, according to the present invention, the cool air that has passed through the cooling heat exchange (16) bypasses both sides of the heating heat exchanger (19) and is substantially linear. Then, the air flows into the face blowing openings (20 to 37). That is, according to the first to fifth aspects of the present invention, the blowout mode door (38) for controlling the air flow to the blowout openings (20 to 37) has a plurality of blowout openings (20 to 37). A film-like door that slides along a wall surface and has openings (38a to 38j) capable of opening a plurality of blowout openings (20 to 37) is used, and a plurality of blowout openings (20 to 37) are used. A heating heat exchanger (19) is provided at the entrance of the face blowout opening (24-35) for blowing air toward the head of the occupant in the vehicle cabin, and is substantially perpendicular to the face blowout opening (24-35). In the face mode in which air is blown out from the face blowing openings (24 to 35), the temperature adjusting doors (17a to 17d) are connected to the air upstream side flow passage of the heating heat exchanger (19) during maximum cooling in the face mode. Operate to the middle position of Te, the heating heat exchanger on both sides of the heating heat exchanger (19) (19)
Is formed, and the cool air on both sides is blown by the openings (38a to 38a) of the film-shaped blowout mode door (38).
38j) and linearly flow into the face outlet openings (24 to 35).

According to this, at the time of the maximum cooling, the cool air on both sides of the heating heat exchanger (19) arranged substantially orthogonally at the inlet of the face blowing opening (24 to 35) is directly blown off as a face. Since the cold air flows into the openings (24 to 35), the cold air bypasses both sides of the heating heat exchanger (19), and is immediately passed through a straight line and a very short flow path. ), The pressure loss in the cool air passage can be greatly reduced, the amount of cool air at the time of maximum cooling can be greatly increased, the blow noise can be reduced, and both sides of the heating heat exchanger (19) A cold air bypass can be formed in
An increase in the amount of cool air at the time of maximum cooling can be realized without separately providing a cool air bypass path and a cool air bypass door for maximum cooling.

Further, a film-shaped blowing mode door (3)
8), the heating heat exchanger (19) is arranged at the entrance of the face blowout openings (24 to 35), so that the heating heat exchanger (19) is connected to the face blowout openings (24 to 35). 3
5) The air conditioner unit can be disposed at a position immediately before 5), and the physical size of the air conditioning unit can be significantly reduced in size, in combination with the elimination of the cool air bypass passage and the cool air bypass door.

According to the second aspect of the present invention, in the face mode in which air is blown from the face blowing openings (24 to 35), the temperature of the face blowing openings (24 to 35) is controlled at the time of temperature control for controlling the temperature of blown air. Of these, by closing the face blowing openings (24 to 27, 32, 33) located on one side of the heating heat exchanger (19) with the film-shaped blowing mode door (38), the heating heat exchanger (19) is opened. )) Cooling air flowing to one side of the heat exchanger for heating (19)
Is passed.

[0011] According to this, the amount of warm air passing through the heating heat exchanger (19) from one side of the heating heat exchanger (19);
The ratio of the amount of the cool air that bypasses the other side of the heating heat exchanger (19) to the amount of the cool air can be adjusted by the temperature adjustment doors (17a to 17d), so that the blown air temperature in the face mode can be favorably controlled. . According to the third aspect of the present invention, since the sliding door that slides in the direction crossing the air passage is used as the temperature adjusting door (17a to 17d), the cooling heat exchanger (16) and the heating door are used. Heat exchanger (1
9) may be very small, and the size of the air conditioning unit can be further reduced.

Further, in the invention according to the fourth aspect, the heating heat exchanger (19) is arranged inside the air conditioning case (2) so that air passes in the vertical direction of the vehicle, and the plurality of blowout openings ( 20 to 37), the foot outlets (36, 37) for blowing air toward the feet of the occupants in the passenger compartment are arranged below the air conditioning case (2), and the plurality of outlets (20 to 37) are arranged. 37), the defroster blowing openings (20 to 23) for blowing air toward the vehicle window glass are arranged on the vehicle upper side of the air conditioning case (2), and the heating heat exchanger (19) is moved upward from below. It is characterized in that the air that has passed through the defroster outlet openings (20 to 23) and the air that has passed through the heating heat exchanger (19) from above to below flows into the foot outlet openings (36, 37). .

According to the fourth aspect of the present invention, the foot outlets (36, 37) are arranged at a distance in the vertical direction of the vehicle.
And the air flow to the defroster outlets (20 to 23) can be made smooth and the heating heat exchanger (1
9) can be arranged in the horizontal direction and the vertical dimension (height) of the air conditioning unit can be reduced, so that the air conditioning unit can be easily mounted on a vehicle.

According to the fifth aspect of the present invention, the air-conditioning case (2) is installed on the instrument panel (100) in front of the vehicle cabin so as to be located substantially at the center in the lateral direction of the vehicle. ), A blower fan (7a-
7d) is installed, and a cooling heat exchanger (16) is installed on the vehicle rear side of the blower fans (7a to 7d), and the air conditioning case (2) is operated by the operation of the blower fans (7a to 7d).
It is characterized in that air flows from the cooling heat exchanger (16) to the heating heat exchanger (17) from the front of the vehicle to the rear of the vehicle in the air passage inside the vehicle.

According to the invention of claim 5, claims 1 to 1 are provided.
The air conditioner having the operation and effect according to the invention described in Item 4 can be configured as a compact integrated unit, and can be easily mounted on a vehicle. In addition, the code | symbol in the parenthesis of each said means shows the correspondence with the concrete means of embodiment mentioned later.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 6 show an embodiment of the present invention. A vehicle air conditioner according to the present embodiment can set a two-layer inside / outside air mode in a foot blowing mode and a foot defroster blowing mode. The temperature in the driver's seat area and the passenger's seat area in the room can be controlled independently, that is, so-called right and left independent temperature control can be performed.

1 to 6, the air-conditioning system ventilation system of the present embodiment is configured as one integrated air-conditioning unit 1, and this air-conditioning unit 1 is equipped with an instrument panel 100 in the front of the passenger compartment.
(See FIG. 5) It is installed at the center of the lower part of the vehicle in the lower part. At this time, the air conditioning unit 1 is used to
1 and 2 with respect to the vertical direction, and mounted on a vehicle.

Here, the space in the instrument panel 100 has a reduced vertical dimension due to the penetration of the vehicle engine 101 into the cabin.
As shown in FIGS. 1 and 2, the vertical direction is smaller than the horizontal direction and the vertical direction of the vehicle, and has a flat shape as a whole. The air-conditioning unit 1 has a resin-made air-conditioning case 2 that forms an air passage. An inside / outside air switching mechanism 3 is disposed at the most front part of the air conditioning unit 1, and the inside / outside air switching mechanism 3 is provided with three outside air sucking outside air (vehicle outside air) from the front side of the vehicle. The intake ports 4a, 4b, 4c are provided in parallel in the vehicle left-right direction.

The three outside air inlets 4a, 4b,
Adjacent to the lower side of 4c, there are provided three indoor air inlets 5a, 5b, 5c for sucking the internal air (vehicle interior air) from below the air conditioning unit 1. Here, the outside air suction ports 4a, 4b, 4c and the inside air suction ports 5a, 5b, 5c are formed on an arc surface formed at the forefront of the air conditioning case 2, as shown in FIG.

Inside the inside / outside air switching mechanism 3, the above-mentioned 3
Three inside / outside air switching doors 6a, 6b, 6c that switch and open / close the individually provided outside air suction ports 4a, 4b, 4c and inside air suction ports 5a, 5b, 5c are slidably disposed. The three inside / outside air switching doors 6a, 6b, 6c are formed in an arc shape along the arc surfaces of the intake ports 4a to 5c.

The three inside / outside air switching doors 6a, 6
An internal gear is formed on the inner arc surface of each of the inner and outer air switching doors 6a, 6b, and 6c. Drive gears 60a, 60b, and 60c are meshed with the internal gears of the internal and external air switching doors 6a, 6b, and 6c. , 60c, the respective inside / outside air switching doors 6a, 6b, 6c slide in the vertical direction in FIG. 1 along the arc surfaces of both the suction ports 4a to 5c. The driving gear 60
a, 60b, and 60c are connected to a common actuator (servo motor) 201 (see FIG. 6 described later) via a rotation transmission mechanism (not shown), and are driven to rotate. The rotation amount of the actuator 201 is controlled by the air-conditioning control device 2 shown in FIG.
00.

The outside air suction ports 4a, 4b, 4c
In this example, a total of four blowing fans 7a, 7 are arranged on the right and left sides of the vehicle, respectively, as the blowers for blowing the intake air from the inside air inlets 5a, 5b, 5c.
b, 7c and 7d are used. These four blowing fans 7a, 7b, 7c, 7d are connected to a common one rotating shaft 7e, and are configured to be driven to rotate by a motor 7f via the rotating shaft 7e.

The blower fans 7a to 7d are composed of well-known centrifugal multi-blade fans (sirocco fans), are disposed in scroll cases 8a to 8d, and scroll air sucked from fan inlets 8e to 8h. Air is blown along the spiral shape of the cases 8a to 8d as shown by the arrow A. On the other hand, in this example, the air passage in the air conditioning case 2 includes a partition plate 9 on the right side of the vehicle, a partition plate 10 in the center of the vehicle,
Four air passages 12 are formed by the partition plate 11 on the left side of the vehicle,
13, 14, and 15. In FIG. 2,
In order to clarify the illustration of the air passages 12 to 15, the heat exchangers 16 and 17 installed in the respective air passages 12 to 15 are schematically illustrated, and the illustration of the blowout openings and the like is omitted.

Here, in a later-described inside / outside air two laminar flow mode, the two air passages 13 and 14 on the vehicle center side serve as first air passages through which the inside air flows, and the air passages 1 on both left and right sides of the vehicle.
Reference numerals 2 and 15 are second air passages through which outside air flows. Therefore,
The left and right partition plates 9 and 11 are partitions for the inside and outside air division. Further, a partition plate 10 at the center of the vehicle is a partition for right and left independent temperature control described later. Each of the partition plates 9 to 11 can be integrally formed with the resin air-conditioning case 2.

In the air conditioning case 2, a blower fan 7a
The evaporator (cooling heat exchanger) 16 is provided immediately after the outlets of the scroll cases 8a to 8d.
15 are arranged so as to cross the entire area. In particular, in this embodiment, the evaporator 16 with a long and horizontally long shape dimensions of the vehicle transverse direction, than to the evaporator 16 from the horizontal direction and arranged form is inclined by a minute angle theta _1, the evaporator 16 It can be arranged in a small space in the vertical direction of the vehicle.

Since the evaporator 16 is arranged as described above, the air blown from the blower fans 7a to 7d is blown to the bottom side in the air-conditioning case 2 as indicated by the arrow A, and then the evaporator 16 is moved upward from below. Pass to. As is well known, the evaporator 16 cools the conditioned air by absorbing the latent heat of evaporation of the refrigerant in the refrigeration cycle from the conditioned air. Also, the evaporator 16
Is a well-known laminated type, such as aluminum.
A large number of flat tubes formed by laminating a plurality of metal thin plates in the middle are stacked and arranged via corrugated fins and brazed integrally. Due to the fin surface of the corrugated fin or the flat surface of the flat tube, the inside of the evaporator 16 extends on the extension line of each of the partition plates 9 to 11 and the air passage 12.
~ 15 can be partitioned.

An air mix door (temperature control door) is located immediately above the evaporator 16 (downstream of the air flow).
17a to 17d are arranged adjacently. The air mix doors 17a to 17d are sliding doors that can slide in the vehicle front-rear direction (the left-right direction in FIG. 1). Although not shown in FIG. 2, the air mix doors 17 a to 17 d are independently installed in the four air passages 12, 13, 14, and 15, and can slide independently.

More specifically, as shown in FIG. 1, the air mix doors 17a to 17d are made of an arc-shaped plate member having a large radius of curvature similar to a flat plate, and have an internal gear on its inner arc surface. Are formed. Drive gears 18a to 18d mesh with the internal gears of the air mix doors 17a to 17d, respectively, and the rotation of the drive gears 18a to 18d causes the air mix doors 17a to 17d to rotate.
a to 17d slide in the front-rear direction of the vehicle (the left-right direction in FIG. 1) and move in the direction crossing the air passage.

The movement of each of the air mix doors 17a to 17d causes a heater core (heating heat exchanger) 1 to be described later in the four air passages 12, 13, 14, and 15, respectively.
The ratio of the amount of warm air passing through the heater core 9 to the amount of cool air bypassing the heater core 19 is adjusted to control the temperature of air blown into the vehicle interior. Further, each of the drive gears 18a to 18
d denotes independent (total of four) actuators (servo motors) 204 via a rotation transmission mechanism (not shown).
a, 204b, 204c, and 204d, and is rotationally driven. This temperature control actuator 204a
The rotation amount of to 204d is adjusted by the air-conditioning control device 200.

The heater core 19 reheats the cold air that has passed through the evaporator 16, in which high-temperature hot water (engine cooling water) flows, and heats the air using the hot water as a heat source. The heater core 19 includes the drive gears 18a to 18d and the air mix doors 17a to 17d.
Air passages 12-15 from the upper part of the vehicle to the rear side of the vehicle
(See FIG. 2) at the entrances of the later-described face blowout openings 24-35.

Here, the heater cores 19 are arranged at the entrances of the face outlets 24 to 35 in a direction substantially orthogonal to the outlets. That is, by the heater core 19 from the horizontal direction and arranged form is inclined by a minute angle theta _2, the face opening portion 24-3
5, the heater core 19 is arranged substantially orthogonally (at right angles). With such an arrangement, the heater core 19 can be arranged in a small space in the vertical direction of the vehicle.

Like the evaporator 16, the heater core 19 has a horizontally long shape in which the size in the vehicle left-right direction is elongated.
The directions of inclination of the evaporator 16 and the heater core 19 are opposite, and the evaporator 16 is inclined downward toward the rear of the vehicle,
The heater core 19 is inclined upward toward the rear of the vehicle. The heater core 19 has a well-known structure, and is formed by laminating a large number of flat tubes formed by joining thin metal plates of aluminum or the like to have a flat cross section by welding or the like with corrugated fins interposed therebetween and brazing integrally. . The inside of the heater core 19 can partition the air passages 12 to 15 on the extension of the partition plates 9 to 11 by the fin surface of the corrugated fin or the flat surface of the flat tube.

Next, a description will be given of the blow-out mode switching mechanism in the present embodiment. A plurality of blow-out openings 20 to 37 are formed at the downstream end of the air passage of the air-conditioning case 2, and these blow-out openings 20 to 37 are formed. An outlet duct (not shown) for blowing the conditioned air toward a predetermined location in the vehicle compartment is connected to the downstream side of the air conditioner. FIG. 3 shows an opening pattern of the blow-out openings 20 to 37 in the air-conditioning case 2, which is developed on one plane. FIG. 4 shows an opening pattern of a film-shaped blowing mode door 38 that opens and closes these blowing openings 20 to 37.

In FIG. 3, reference numerals 20 to 23 denote defroster blowout openings. The opening areas of the defroster blowout openings 20 and 23 located in the left and right air passages 12 and 15 serving as outside air side passages in the two-layer flow mode are shown. In the two-layer flow mode, the opening areas of the defroster blowout openings 21 and 22 located in the air passages 13 and 14 near the center which are the inside air side passages are made larger.

These defroster outlet openings 20 to 23
As shown in FIG. 1, an opening is provided at a substantially central portion in the vehicle front-rear direction on the upper surface of the air conditioning case 2. A common defroster duct (not shown) is connected to the two right defroster outlet openings 20 and 21, and the left two defroster ducts are connected to each other.
A common defroster duct (not shown) is also connected to the two defroster blowout openings 22 and 23, and the air blown out from two right and left defroster blowout openings 20, 21 and 22, 23 inside the defroster ducts respectively. I do.

A defroster outlet (not shown) for blowing out conditioned air toward the inner surface of the vehicle window glass is provided at the tip of the defroster duct. Next, the side face blowout openings 24 to 31 are opened at a position on the upper side of the air conditioning case 2 on the rear side of the vehicle with respect to the defroster blowout openings 20 to 23. In the present embodiment, the two-layer flow mode is used. Air passages 12 on both the left and right sides sometimes serving as outside air passages,
At 15, side face blowout openings 24 to 31 are located and open. The side face blowout openings 24, 25, 28, and 29 that open to the right air passage 12 are connected to a common right side face duct (not shown), and inside the side face duct, the openings 24, 25, 2, and
The conditioned air from the air conditioners 8 and 29 is joined, and the conditioned air is blown from a right side face outlet (not shown) provided at the end of the duct toward the right side window glass of the vehicle or the head side of the right occupant.

Similarly, side face blow-out openings 26, 27, 30, 31 which open into the left air passage 15 are connected to a common left side face duct (not shown).
Each of the openings 26, 2 inside the side face duct
The conditioned air from 7, 30, 31 is joined, and the conditioned air is directed from the left side face outlet (not shown) provided at the end of the duct toward the left side window glass of the vehicle or the head side of the left occupant. Blow out.

Also, the side face blowing openings 24 to 3
Among them, the side face blowout openings 24 to 27 are arranged on the vehicle upper side with respect to the side face blowout openings 28 to 31, and can communicate with the space above the heater core 19. Then, the remaining side face blowing openings 28 to
Reference numeral 31 is arranged so as to communicate with the space below the heater core 19.

Center face blowout openings 32, 3 arranged so as to open into air passages 13, 14 near the center.
As shown in FIG. 1, the side face outlets 24 to 27 are disposed at the same position in the vehicle front-rear direction and the vehicle up-down direction as shown in FIG. The upper space 19 can be communicated with.

The air passages 13 and 1 are also located near the center.
The center face blowout openings 34 and 35 arranged to open into the inside 4 are located below the side face blowout openings 24 to 27 and the center face blowout openings 32 and 33 as shown in FIG. It is arranged so that it can communicate with the space below the heater core 19.

The right side center face opening openings 32, 3
4 is connected to a common center face duct on the right side (not shown), and each opening 3
The air-conditioning air from the air conditioners 2 and 34 is joined, and the air-conditioning air is blown out from the right center face air outlet (not shown) provided at the end of the duct toward the head of the right occupant of the vehicle.

Similarly, the left center face outlet openings 33 and 35 are connected to a common center face duct (not shown) on the left side, and the conditioned air from the respective openings 33 and 35 is joined inside the center face duct. With
The conditioned air is blown from the left center face outlet (not shown) provided at the end of the duct toward the head side of the left occupant of the vehicle.

As shown in FIG. 1, the foot outlet openings 36 and 37 are arranged at the lowermost part of the air-conditioning case 2 on the rearmost side of the vehicle, and as shown in FIG. The air passage 13 is formed so that air can be introduced only from the center air passage 13 on the right side, and the foot outlet opening 37 on the left side is formed so that air can be introduced only from the air passage 14 on the left side. A foot duct (not shown) is connected to each of the left and right foot outlets 36 and 37, and a foot outlet for blowing conditioned air toward the feet of the occupant is installed at the tip of the foot duct. Have been.

The film-shaped blowing mode door 3 shown in FIG.
Reference numeral 8 denotes a well-known thin film-shaped flexible material, specifically, a resin film material having excellent flexibility and strength like a polyethylene resin. This film-shaped blowing mode door 38 has a width substantially equal to the width of the air-conditioning case 2 in the vehicle left-right direction. The air flow is switched and controlled.

As shown in FIG. 1, inside the air conditioning case 2
The drive shaft 39 and the driven shaft 40 are rotatably supported with respect to the air conditioning case 2. The drive shaft 39 and the driven shaft 4
At both ends, both ends of the film-shaped blowing mode door 38 are fixed and wound. A constant tension is applied to the film-shaped blow-out mode door 38 by the drive shaft 39, the driven shaft 40, and the intermediate guide portions 41 and 42 so as to cross the blow-out openings 20 to 37, respectively. It is slidably disposed along the inner wall surface of the air conditioning case 2 in this state.

The drive shaft 39 is driven by an actuator 205 such as a step motor, and the amount of rotation of the actuator 205 is controlled by an air conditioning controller 200. The rotation of the drive shaft 39 is transmitted to the driven shaft 40 via a rotation transmission mechanism (not shown). Accordingly, when the drive shaft 39 is rotated in both the forward and reverse directions by the actuator 205, the driven shaft 40 is also rotated in both the forward and reverse directions in conjunction with each other. The film 40 is rewound from one side and wound around the other side, and the film-shaped blowout mode door 38 slides along the inner wall surface of each of the blowout openings 20 to 37.

Then, a film-shaped blowing mode door 38
As shown in FIG. 4, a total of ten openings 38 a to 38 j for allowing air to pass through are formed, and the drive shaft 39 is rotated in both forward and reverse directions by the actuator to open the blow mode door 38. By stopping at a predetermined position, the communication between the openings 38a to 38j and the blowout openings 20 to 37 is switched, and the connection is cut off.
Switching of the blowing mode is performed.

Here, of the four air passages 12 to 15, three openings 38a and 38 are respectively provided in the left and right air passages 12 and 15 which are the outside air side passages in the two-layer flow mode.
e, 38g and openings 38d, 38f, 38j. In the two-layer flow mode, two openings 38b and 38h and two openings 38c and 38i are located in the air passages 13 and 14 near the center which are the inside air passages.

FIG. 6 is a block diagram showing an outline of the electric control in the present embodiment. The air conditioning control device 200 includes a well-known sensor group 202 and a well-known operation switch group 203 provided on an air-conditioning operation panel (not shown). Input signals are added to the input signals from the actuators 201, 204 a to 204 d, and 2, by performing predetermined arithmetic processing on these input signals based on a preset program.
05, the operation of the blower motor 7f and the like is controlled.

Next, the operation of this embodiment in the above configuration will be described for each blowing mode. "Foot blowing mode" In the foot blowing mode, the film-shaped blowing mode door 38 is operated to the position shown in FIG. 7 by the mode switching actuator 205, so that the foot blowing openings 36, 38i are formed by the openings 38h and 38i of the blowing mode door 38. 37 communicates with the air passages 13 and 14 in a fully open state. Further, of the defroster blowout openings 20 to 23, the left and right defroster blowout openings 20 and 23 are opened by the openings 38a and 38d of the blowout mode door 38, and the air passages 12 and
It communicates with 15 with a small opening.

Also, the side face blowout openings 24 to 3
1, the left and right side face opening openings 24,
The opening 27 communicates with the air passages 12 and 15 through the openings 38 e and 38 f of the blowing mode door 38 in a fully opened state. But,
Other side face outlets 25, 26, 28, 2
9, 30, 31 are closed at this time. The center face outlets 32 to 35 are in a fully closed state.

On the other hand, when the maximum heating state is to be set, such as when starting heating, the inside / outside air two-layer flow mode is set. Therefore, in the inside / outside air switching mechanism 3, the inside / outside air switching doors 6a, 6c are driven to the following positions by the actuator 201 and the driving gears 60a, 60b, 60c. That is, as shown in FIG. 8, the inside / outside air switching doors 6a, 6c on the left and right sides are driven to positions where the inside air intake ports 5a, 5c are closed and the outside air intake ports 4a, 4c are opened. The switching door 6b is driven to a position that closes the outside air suction port 4b and opens the inside air suction port 5b.

When the blower motor 7f is operated, the left and right blowers 7a, 7d
a, 4c, the outside air is sucked in from outside air passages 12 on the left and right sides,
Blow to 15. In addition, the ventilation fans 7b, 7 near the center
c sucks the inside air from the inside air suction port 5b and blows it to the air passages 13 and 14 near the center. Next, the operation positions of the air mix doors 17a to 17d in the maximum heating state will be described. The air mix doors 17a to 17d are provided corresponding to the air passages 12 to 15, respectively.
In addition, independent movement can be performed by the actuators 204a to 204d via the driving gears 18a to 18d, respectively.

FIG. 8A shows the air flow in the outside air passages 12 and 15 during the maximum heating in the foot blowing mode and the foot defroster blowing mode, and FIG. 8B shows the inside air during the maximum heating in the blowing mode. Side air passage 13, 1
4 shows the airflow of FIG. Outside air passages 12, 15
The air mix doors 17a and 17d in the drive gear 1
Due to the rotation of 8a and 18d, it has moved to the position on the most front side of the vehicle.

Therefore, in the outside air passages 12 and 15, after the outside air blown by the blowers 7 a and 7 d passes through the evaporator 16, the whole amount of the outside air is blown by the air mix door 17.
The heater core 19 flows into the heater core 19 from below the heater core 19 through a flow path formed in the rear part of the vehicle at a and 17d, and is heated by the heater core 16. The heated warm air flows above the heater core 19 and blows out toward the inner surface of the vehicle window glass through the left and right defroster outlet openings 20 and 23.

At the same time, the outside air passages 12 and 15
Part of the warm air heated by the heater core 19 blows out toward the inner surface of the window glass on the side of the vehicle through the left and right side face blowing openings 24 and 27. On the other hand, the blower fans 7b, 7
After the inside air blown by c passes through the evaporator 16, the whole amount reaches the space above the heater core 19 through a flow path formed in the front part of the vehicle of the air mix doors 17 b and 17 c. However, at this time, at least one blowout opening located above the heater core 19 has the inside air passage 13,
14 (see FIG. 7), the entire amount of inside air once reaching above the heater core 19 is
Passes from above to below and is heated to become hot air.

The warm air of the inside air is supplied to the foot outlet 36,
Through 37, it blows out to the occupant's feet in the passenger compartment. here,
The warm air blown out to the feet of the occupants in the passenger compartment through the foot outlet openings 36 and 37 recirculates and heats the inside air having a high temperature in the passenger compartment. Can be improved. Moreover, the defroster blowing opening 2
The warm air blown out toward the vehicle window glass from the 0 and 23 and the side face openings 24 and 27 is warm air that heats low-humidity outside air, so that the anti-fog property of the window glass can be sufficiently ensured.

As understood from the above description, the partition plates 9 and 11 have a role of partitioning the inside and outside air, and also have a role of partitioning two air flows that pass through the heater core 19 in the vertical direction. In addition, as described above, the defroster blowout openings 20 and 23 correspond to the opening 38 of the blowout mode door 38.
Since the air passages a and 38d communicate with the air passages 12 and 15 with a small opening, the amount of air blown from the defroster blow openings 20 and 23 in the foot blow mode is suppressed to a small amount.
Similarly, as for the side face openings, only a part of the side face openings 24 and 27 having a small opening area are open, so that the amount of blown air can be suppressed to a small amount. Thus, the head of the occupant can be prevented from burning in the foot blowing mode.

Here, the defroster blowing openings 20, 23
The ratio of the amount of air blown from the side face blowout openings 24 and 27 to the amount of blown air from the foot blowout openings 36 and 37 is, for example, about 3: 7. Next, when the vehicle interior temperature rises and the heating load decreases, the air mix doors 17a to 17d are operated from the maximum heating position to the intermediate opening position to control the blown air temperature, and the outside air side air passage 1 is opened.
A part of the blown air blown to the air passages 2 and 15 and the inside air passages 13 and 14 is caused to flow by bypassing the heater core 19.

That is, as shown in FIGS. 9A and 9B, the air mix door 17 is provided in each of the outside air passages 12 and 15 and the inside air passages 13 and 14.
By operating the air mixing doors 17a and 17d and the air mixing doors 17b and 17c at the intermediate opening position, a part of the blown air flows by bypassing the heater core 19, and the temperature of the air blown into the vehicle compartment is arbitrarily adjusted. it can.

Incidentally, in the intermediate temperature control range, since the maximum heating capacity is not required, the inside / outside air suction mode is usually
The three inside / outside air switching doors 6a, 6b, 6c close the inside air intakes 5a, 5b, 5c, and the outside air intakes 4a, 4b, 4c.
b, 4c are set to the full outside air mode in which they are all opened. However, according to the setting by manual operation of the occupant, the three inside / outside air switching doors 6a, 6b, 6c allow the outside air inlets 4a, 4b, 4c to be opened.
May be closed to open all the inside air suction ports 5a, 5b, 5c, and 2a, or a two-layer inside / outside air mode in which inside air and outside air are simultaneously introduced as described above.

During the heating in winter, since the outside air temperature is low, the refrigeration cycle having the evaporator 16 is stopped. "Foot defroster blowing mode" In the foot defroster blowing mode, the film-shaped blowing mode door 38 is operated to the position shown in FIG.
The degree of opening of the foot outlets 36 and 37 is halved compared to the case of the foot outlet mode of FIG. On the other hand, the defroster blowout openings 20 and 23 communicate with the air passages 12 and 15 through the openings 38a and 38d of the blowout mode door 38 at substantially half the opening degrees, respectively.
Is doubled as compared with the case of the foot blowing mode in FIG. At this time, the degree of opening of the side face openings 24 and 27 does not change.

As a result, the defroster blowing opening 20,
The ratio of the amount of air blown from the air outlets 23 and the side face outlets 24 and 27 to the amount of air blown from the foot outlets 36 and 37 can be set to, for example, about 5: 5. Can be increased. In the foot defroster blowing mode, as described above, only the air volume ratio of the blowing air volume changes, and the other points, that is, the setting of the inside / outside air two-layer flow mode in the maximum heating state and the air mixing doors 17a to 17d are used. The control of the blowing air temperature and the like are all the same as in the foot blowing mode.

"Defroster blowing mode" In the defroster blowing mode, since the film-shaped blowing mode door 38 is operated to the position shown in FIG. 11 by the actuator 205, the defroster blowing openings are opened by the openings 38a and 38d of the blowing mode door 38. 20 and 23 are the outside air side air passages 1
It communicates with 2 and 15 in a fully open state, respectively. In addition, the defroster outlet openings 21 and 22 communicate with the inside air side air passages 13 and 14 by the openings 38b and 38c of the outlet mode door 38 in a fully open state, respectively.

Further, the side face blowing openings 24 to 3
1, the left and right side face opening openings 24,
The opening 27 communicates with the air passages 12 and 15 through the openings 38 e and 38 f of the blowing mode door 38 in a fully opened state. But,
Other side face outlets 25, 26, 28, 2
9, 30, 31 are closed at this time. In addition, the center face blowing openings 32 to 35 and the foot blowing opening 3
6 and 37 are in the fully closed state.

In the defroster blowing mode, the inside / outside air suction mode is usually set to the whole outside air mode in order to secure the anti-fog property of the window glass. That is, in the inside / outside air switching mechanism 3, as shown in FIG. 12, the inside / outside air switching doors 6a, 6b, 6c are moved by the actuator 201 and the driving gears 60a, 60b, 60c to the inside air inlets 5a, 5a.
b, 5c are all closed and the outside air inlets 4a, 4b, 4c
Drive to the position where all are open.

When the blower motor 7f is operated, the blower fans 7a to 7d allow the outside air inlets 4a, 4a,
b, 4c, the outside air is sucked, and four air passages 12 to 1
All the outside air is blown to 5. And, in the maximum heating state, as shown in FIG.
All of the air mix doors 17a to 17d at 15 have been moved to the most vehicle forward position by the rotation of the drive gears 18a to 18d.

Therefore, in the four air passages 12 to 15, the outside air blown by the blowers 7 a to 7 d is
After passing through the evaporator 16, the entire amount thereof flows into the heater core 19 from below the heater core 19 through a flow path formed in the vehicle rear part of the air mix doors 17 a to 17 d,
Heated by the heater core 16. The heated hot air flows above the heater core 19 and blows out toward the inner surface of the window glass on the front of the vehicle through the above-described defroster blowing openings 20 to 23.

At the same time, a part of the warm air heated by the heater core 19 is supplied to the left and right side face blowing openings 2.
It blows out toward the inside of the window glass on the side of the vehicle through 4, 27. This makes it possible to prevent fogging of the vehicle front window glass and the vehicle side window glass. FIG.
(B) shows a 1/2 heating state in the defroster blowing mode, and the air mix doors 17a to 17d in the four air passages 12 to 15 are all driving gears 18a to 18d.
18d, the warm air heated by the heater core 19 moves to the intermediate position in the vehicle front-rear direction,
After the hot air is mixed with the cold air that has bypassed the air to obtain a predetermined blown air temperature, the hot air flows into the defroster blowout openings 20 to 2.
3 and the side face blow-out openings 24 and 27 are blown out to the inner surface of the vehicle window glass. "Face blowing mode" In face blowing mode,
When the air conditioner is in the maximum cooling state, the film-shaped blowing mode door 38 is operated to the position shown in FIG.
8i, the center face outlets 32 to 35 communicate with the air passages 13 and 14 near the center in a fully opened state. At the same time, the opening 38 of the blowing mode door 38
g, 38j, side face blow-out openings 24-31
Communicate with the air passages 12 and 15 on the left and right sides in a fully opened state, respectively.

At this time, the defroster blowing openings 20 to 2
3 and the foot outlet openings 36 and 37 are in a fully closed state. Here, when in the maximum cooling state, the inside / outside air suction mode is usually set to the all inside air mode in order to reduce the cooling heat load. That is, in the inside / outside air switching mechanism 3, FIG.
As shown in FIG.
0a, 60b, 60c, the inside / outside air switching doors 6a, 6
b and 6c are driven to positions where the outside air intake ports 4a, 4b and 4c are all closed and the inside air intake ports 5a, 5b and 5c are all open.

When the blower motor 7f is operated, the blower fans 7a to 7d allow the inside air inlets 5a, 5a,
b, 5c, the inside air is sucked, and four air passages 12 to 1
All the inside air is blown to 5. Further, the refrigeration cycle is operated, and the air passages 12, 13, 1 and
The blast air of 4 and 15 is cooled and becomes cold air.

Then, in the maximum cooling state, FIG.
As shown in FIG. 5, the air mixing doors 17a to 17d in the four air passages 12 to 15 are all driven gears 18a to 18d.
Due to the rotation of 18d, it has moved to an intermediate position in the vehicle longitudinal direction. Therefore, in the four air passages 12 to 15, after the inside air blown by the blower fans 7 a to 7 d is cooled by the evaporator 16 and becomes cool air, the whole amount is reduced to the vehicle front side of the air mix doors 17 a to 17 d and the vehicle. It flows into the space on the upper and lower sides of the heater core 19 through the flow path formed on the rear side.

Since the center face blowout openings 34 and 35 and the side face blowout openings 28 to 31 are opened in the space below the heater core 19, the cool air does not pass through the heater core 19, and The center face blowout openings 34 and 35 and the side face blowout openings 28 to 31 are straightened from the space as they are.
And blows out to the passenger compartment.

At this time, since the center face blowout openings 32 and 33 and the side face blowout openings 24 to 27 are opened in the space above the heater core 19, the cool air does not pass through the heater core 19. The air directly flows from the space above the heater core 19 into the center face blowout openings 32 and 33 and the side face blowout openings 24 to 27 and blows out into the vehicle interior.

As described above, the cool air cooled by the evaporator 16 is blown into the vehicle interior without being reheated by the heater core 19, and the maximum heating capacity is exhibited. At this time, the cool air linearly passes through the upper and lower flow paths of the heater core 19 and flows into each face blowout opening, and since each face blowout opening is located immediately after the heater core 19, the cool wind flow path Can be significantly reduced, and the amount of cold air can be increased.

The side face outlets 24 to 3
Since the side face outlet that blows out the conditioned air from 1 has a grille mechanism that can adjust the air blowing direction by manual operation, the air blowing direction is changed to the occupant side during cooling in summer. At the time of maximum cooling, normally, a hot water valve provided in a hot water circuit that circulates hot water to the heater core 19 is closed to stop the hot water circulation to the heater core 19.

Next, when the cooling load decreases due to a decrease in the vehicle interior temperature, a transition is made from the maximum cooling state to a temperature control state in which the cooling capacity is limited. In this temperature control state, the rotational position of the actuator 205 is controlled by arithmetic processing in the air conditioning control device 200, and the film-shaped blowing mode door 38 is controlled.
Is operated to the position shown in FIG. Therefore, the center face blowout openings 34, 35 communicate with the air passages 13, 14 near the center by the openings 38h, 38i of the blowout mode door 38, respectively, in a fully opened state. At the same time, the side face blowout openings 28 to 31 are opened by the openings 38g and 38j of the blowout mode door 38 so that the left and right air passages 12 and 1 are formed.
5 in full open state. That is, the lower face blowout openings 28 to 31, 34, and 35 installed so as to be able to communicate with the lower space of the heater core 19 maintain the open state.

However, the center face blowout openings 32 and 33 and the side face blowout openings 24 to 27 which were opened in the maximum cooling state, that is, the upper face blowout openings provided so as to communicate with the space above the heater core 19. The parts 24 to 27, 32, and 33 are closed with the transition to the temperature control state. Also, the defroster outlet opening 20 to
23 and the foot outlet openings 36, 37 are still in the fully closed state.

As described above, the upper center face blowout openings 32 and 33 and the side face blowout openings 24 are provided.
As a result, there is no blowout opening communicating with the space above the heater core 19, so that the heater core 19 is closed.
As shown in FIG. 14B, the cool air that has reached the upper space passes through the heater core 19 from above to below, is reheated by the heater core 19, and becomes hot air.

This warm air mixes with the cool air in the space below the heater core 19 to obtain a cool air at a predetermined temperature. The cool air having the predetermined temperature is blown into the vehicle cabin through the lower center face blowout openings 34 and 35 and the side face blowout openings 28 to 31. The temperature control of the blown air in the face blowout mode is performed by moving the air mix doors 17a to 17d in the four air passages 12 to 15 from the intermediate position in the vehicle front-rear direction shown in FIG.
The air flow rate of the warm air heated by the heater core 19 increases, and the blown air temperature rises.

In the face blowing mode, from the temperature control state other than the maximum cooling state to the maximum heating state,
At all times, the film-shaped blow mode door 38 is maintained at the position shown in FIG. Even in the face blowing mode, the inside / outside air suction mode is controlled by the inside / outside air switching doors 6a, 6b, and 6c.
Either total outside air or two-layer inside / outside air flow can be selected. "Bi-level blowing mode" In the bi-level blowing mode, since the film-shaped blowing mode door 38 is operated to the position shown in FIG. 16 by the actuator, the center face blowing opening 34 is formed by the openings 38h and 38i of the blowing mode door 38. , 35 and foot outlet openings 36, 37
Communicate with the air passages 13 and 14 near the center. Here, the foot blowout openings 36 and 37 are in a fully opened state, and the center face blowout openings 34 and 35 are in an intermediate opening degree slightly smaller than the fully opened state.

At the same time, the side face blow-out opening 28 is
31 communicate with the air passages 12 and 15 on the left and right sides, respectively. Here, the side face blowing openings 28 and 31 are fully opened, and the side face blowing openings 2
Reference numerals 9 and 30 denote intermediate opening degrees slightly smaller than the fully opened state.

At this time, the defroster blowing openings 20 to 2
3 and the side face blowing openings 24 to 27 are in a fully closed state. Here, since the bi-level blowing mode is mainly used in the middle season of spring and autumn, the refrigeration cycle is operated,
After the blown air in each of the air passages 12, 13, 14, 15 is cooled by the evaporator 16 to become cool air, a part of the cool air is reheated by the heater core 19 to be adjusted to a predetermined temperature.

The temperature adjustment by the heater core 19 will be described. In the bi-level blowing mode, normally, the air mixing door 17a in the four air passages 12 to 15 is provided.
17d is operated to an intermediate position in the vehicle longitudinal direction as shown in FIGS. 17 (a) and 17 (b). As a result, in the four air passages 12 to 15, after the outside air (or inside air) blown by the blowers 7 a to 7 d is cooled by the evaporator 16 and becomes cool air, the entire amount is cooled by the air mix door 17 a.
17d flows into the lower space and the upper space of the heater core 19 through flow paths formed on the vehicle front side and the vehicle rear side.

At this time, the upper center face blowing opening 3 provided corresponding to the space above the heater core 19 is provided.
Since all of the openings 2 and 33 and the side face blowout openings 24 to 27 are closed, there is no blowout opening communicating with the space above the heater core 19. Therefore, in the four air passages 12 to 15, the cool air reaching the space above the heater core 19 passes through the heater core 19 from above to below as shown in FIGS. It is reheated and becomes warm air.

This warm air is mixed with cool air in the space below the heater core 19 to obtain conditioned air at a predetermined temperature. The conditioned air at the predetermined temperature is supplied to the lower center face blowout openings 34 and 35.
And the air is blown upward through the side face blowing openings 28 to 31 to the upper side in the vehicle cabin. At the same time, the conditioned air in the space below the heater core 19 blows out to the feet of the occupant in the vehicle cabin through the foot blowing openings 36 and 37. As described above, the air-conditioning air can be blown out to both the upper and lower sides of the vehicle compartment at the same time to perform air conditioning in the vehicle compartment.

As shown in FIG. 17A, in the outside air passages 12 and 15, the space under the heater core 19 blows the conditioned air only to the upper side of the vehicle cabin through the side face blowing openings 28 to 31. Also, as shown in FIG. 17B, the conditioned air is blown out from both the center face blowing openings 34 and 35 and the foot blowing openings 36 and 37 in the inside air passages 13 and 14.

As will be understood from the above description of the operation, according to the present embodiment, the first blowout openings (that is, the defroster openings 20 to 23, the side defroster openings) communicating with the space above the heater core 19 are provided. 24-2
7 and the center face blowing openings 32 and 33), the air that passes through the heater core 19 from below to above is blown out.

On the other hand, with respect to the second blowing openings communicating with the space below the heater core 19 (that is, the side defroster openings 28 to 31, the center face blowing openings 34 and 35, and the foot blowing openings 36 and 37). Blows air passing through the heater core 19 from above to below. Therefore, the defroster openings 20 to 23 and the side defroster openings 24 provided on the upper surface of the air conditioning case 2 are provided.
27 and the center face blowing openings 32 and 33, air can flow smoothly from the lower side of the heater core 19 to the upper side without forming a large flow path bend. Similarly, the heater cores 1 are also provided to the foot outlets 36, 37 and the like provided at the bottom of the air conditioning case 2.
9 Air can flow smoothly from the upper side to the lower side. As a result, it is possible to reduce the pressure loss of the ventilation system and the ventilation noise.

According to the present embodiment, when the two-layer flow mode of the inside and outside air is not performed, the plurality of air passages 12 to 1
Since the air blown out from the outlet 5 is merged on the downstream side of the blow-out mode door 38, an increase in pressure loss due to the merged air flow is greater than when air merges on the upstream side of the blow-out mode door 38. Can be suppressed, and the pressure loss can be further reduced.

Further, according to the present embodiment, the four air passages 12 to 15 can be divided into two in the left-right direction by the partition plate 10 arranged at the center in the vehicle left-right direction. Doors 17a, 17b,
The two air mix doors 17c and 17d on the left side are independently controlled by the air conditioning control device 200 according to the right side set temperature and the left side set temperature, respectively.
The left and right (driver's seat side and passenger's seat side) regions in the vehicle cabin can be adjusted to independent temperatures.

Since the technique for controlling the left and right temperatures independently may be a well-known technique, a detailed description thereof will be omitted. (Other Embodiments) The above embodiment shows a preferred example of the present invention, but the present invention is not limited to this and can be implemented in various modes as described below.

In the above-described embodiment, the air conditioner in which the inside / outside air two-layer flow mode can be set in the foot blow mode and the foot defroster blow mode has been described. The invention is equally applicable to devices. In the above embodiment, the air conditioner of the so-called right and left independent temperature control system capable of independently adjusting the temperature of the left and right (driver's seat side and passenger's seat side) area in the vehicle compartment has been described. The invention is equally applicable to conventional types of air conditioners.

In the ordinary type of air conditioner which does not employ the two-layer flow mode of the inside and outside air and the independent left and right temperature control as described above, the partition plate for the inside and outside air section and the left and right passage partitions are not required. Flows through the heater core 19 from below to above and flows into the defroster openings 20 to 23 and the like, and passes through the heater core 19 from above to below and to the foot outlet openings 36 and 37 and the like. A partition that separates the flow of warm air flowing to the

In the air conditioner of the type using the air mix doors 17a to 17d as the means for adjusting the blown air temperature as in the above embodiment, the partition at the heater core 19 is at least downstream of the air mix doors 17a to 17d. From the outlet to the upstream of each outlet. In the above embodiment, four blower fans 7a to 7d composed of centrifugal multi-blade fans are used.
It is also possible to replace with one crossflow fan.

In the above embodiment, the inside / outside air two-layer flow mode is set only at the time of maximum heating in the foot blowing mode and the foot defroster blowing mode. The inside / outside air two-layer flow mode may be set at all times in conjunction with the setting. In the above embodiment, the four members of the inside / outside air switching mechanism 3, the blower fans 7a to 7d, the evaporator 16, and the heater core 19 are arranged in series in the front-rear direction of the vehicle, and these are integrally formed in the air conditioning unit 1. However, the air-conditioning case 2 accommodating the evaporator 16 and the heater core 19 is arranged at the center in the left-right direction in the vehicle interior, and the inside / outside air switching mechanism 3 and the blowing fans 7a to 7d are used to control A configuration in which the case 2 is arranged to be offset to the side may be used.

It is needless to say that the present invention can be similarly applied to an air conditioner in which the evaporator (cooling heat exchanger) 16 is not provided in the air conditioning unit 1. In the above embodiment, the air-conditioning unit 1 disposed below the instrument panel 100 in the front of the vehicle compartment has been described. However, the present invention relates to a rear air-conditioning unit disposed in the rear of the vehicle compartment and air-conditioning the rear side of the vehicle compartment. Can be similarly applied. In this rear air conditioning unit, the defroster blowout opening is not usually provided, and only two types of blowout openings, ie, the face blowout opening and the foot blowout opening, are provided, so that the flow direction of the air passing through the heater core 19 is changed. In other words, the direction is reversed between the direction toward the face blowing opening and the direction toward the foot blowing opening.

Further, since the air conditioning unit of the vehicle is mounted on the vehicle in various postures depending on the form of the vehicle (difference between a passenger car and a commercial vehicle, etc.), the reversal of the flow direction of the air passing through the heater core 19 is performed as described above. Not only the upside-down inversion as in the embodiment, but also inversion in the left-right direction, the front-back direction, etc. may be adopted.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of one embodiment of the present invention.

FIG. 2 is a schematic top sectional view of the embodiment.

FIG. 3 is a development view showing an opening pattern of a blowout opening of the air-conditioning case in the embodiment.

FIG. 4 is a development view showing an opening pattern of a film-shaped blow-out mode door in the embodiment.

FIG. 5 is an explanatory diagram showing a vehicle mounted state of the embodiment.

FIG. 6 is an electric control block diagram of the embodiment.

FIG. 7 is an explanatory diagram showing a positional relationship between a blowout opening of the air-conditioning case and a film-like blowout mode door in the foot blowout mode of the embodiment.

FIG. 8 is a schematic vertical cross-sectional view illustrating air flow in the unit in a maximum heating state in a foot blowing mode and a foot defroster blowing mode of the embodiment.

FIG. 9 is a schematic vertical cross-sectional view illustrating air flow in the unit in a 1/2 heating state in the foot blowing mode and the foot defroster blowing mode of the embodiment.

FIG. 10 is an explanatory diagram showing a positional relationship between a blowing opening of an air conditioning case and an opening of a film-shaped blowing mode door in a foot defroster blowing mode of the embodiment.

FIG. 11 is an explanatory diagram showing a positional relationship between a blow-off opening of the air-conditioning case and a film-like blow-off mode door in the defroster blow-out mode of the embodiment.

FIG. 12 is a schematic longitudinal sectional view for explaining an air flow in the unit in a defroster blowing mode of the embodiment.

FIG. 13 is an explanatory diagram showing a positional relationship between a blow-off opening of an air-conditioning case and a film-like blow-off mode door during maximum cooling in the face blow-off mode of the embodiment.

FIG. 14 is a schematic longitudinal sectional view for explaining the air flow in the unit in the face blowing mode of the embodiment.

FIG. 15 is an explanatory diagram showing a positional relationship between a blow-off opening of the air-conditioning case and a film-like blow-off mode door during 1/2 cooling in the face blow-off mode of the embodiment.

FIG. 16 is an explanatory diagram showing a positional relationship between a blow-off opening of the air-conditioning case and a film-like blow-off mode door in the bi-level blowing mode of the embodiment.

FIG. 17 is a schematic longitudinal sectional view for explaining the air flow in the unit in the bi-level blowing mode of the embodiment.

[Explanation of symbols]

2 ... air-conditioning case, 4a, 4b, 4c ... outside air inlet, 5
a, 5b, 5c: inside air suction ports, 6a, 6b, 6c: inside / outside air switching doors, 7a to 7d: blowing fans, 9, 10, 11
... partition plate, 12-15 ... air passage, 16 ... evaporator, 1
7a to 17d: air mix door, 19: heater core,
20 to 23: Defroster blowing opening, 24 to 31: Side face blowing opening, 32 to 35: Center face blowing opening, 36, 37: Foot blowing opening, 38: Film-shaped blowing mode door, 38a to 38j ... Aperture.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Koji Ito 1-1-1, Showa-cho, Kariya-shi, Aichi Prefecture Inside DENSO Corporation

Claims (5)

[Claims] An air conditioning case forming an air passage (2)
A suction port (4a, 4b, 4c, 5a, 5b, 5c) arranged at one end of the air passage for sucking air; and an air inlet arranged at the other end of the air passage to blow air into the vehicle interior. A plurality of blowout openings (20-37); a blower fan (7a-7d) for blowing air from the suction opening toward the plurality of blowout openings (20-37); and an inside of the air conditioning case (2). And a cooling heat exchanger (16) for cooling the air blown by the blowing fans (7a to 7d), and in the air conditioning case (2) downstream of the air of the cooling heat exchanger (16). The blower fan (7
a to 7d) Heating heat exchanger (1) for heating the blast air
9), a blowing mode door (38) for controlling the air flow to the plurality of blowing openings (20 to 37), the cooling heat exchanger (16), and the heating heat exchanger (1).
9), and a temperature adjusting door (17a-1) for adjusting the amount of hot air passing through the heating heat exchanger (19) and the amount of cold air bypassing the heating heat exchanger (19).
7d), wherein the blowing mode door (38) slides along the wall surfaces of the plurality of blowing openings (20-37) and can open the plurality of blowing openings (20-37). A plurality of air outlets (20-37), among the plurality of air outlets (20-37), a face air outlet (20-37) for blowing air toward a head of an occupant in a vehicle cabin. 24 to 35), the heating heat exchanger (1)
9) is disposed in a direction substantially orthogonal to the face blowout openings (24 to 35), and in the face mode in which air is blown out from the face blowout openings (24 to 35), when the maximum cooling is performed, the temperature adjustment door is provided. (17a to 17d) are operated at intermediate positions of the air upstream side flow path of the heating heat exchanger (19), and the heating heat exchanger (19) is provided on both sides of the heating heat exchanger (19). To form a flow of cool air that bypasses the air outlet, and to allow the cool air on both sides to flow straight into the face blow openings (24 to 35) through the openings (38a to 38j) of the film-like blow mode door (38). A vehicle air conditioner characterized by the above-mentioned. 2. The face blow-out opening (24-35).
In the face mode in which air is blown out from the heater, at the time of temperature control for controlling the blown air temperature, the heating heat exchanger (19) in the face blowout openings (24 to 35).
Face opening openings (24 to 27, 3
2, 33) is replaced with the film-shaped blowing mode door (38).
The heating heat exchanger (19)
The air conditioner for a vehicle according to claim 1, wherein the cool air flowing to one side of the vehicle is passed through the heating heat exchanger (19). 3. The temperature adjusting door (17a to 17d).
The air conditioner for a vehicle according to claim 1 or 2, wherein a sliding door slides in a direction crossing the air passage. 4. The heating heat exchanger (19) is arranged in the air conditioning case (2) so that air passes in a vehicle up-down direction, and the plurality of blowout openings (20 to 37). ), The foot outlets (36, 37) for blowing air toward the feet of the occupant in the vehicle cabin are arranged below the air conditioning case (2), and the plurality of outlets (20). Among them, the defroster blowout openings (20 to 23) for blowing air toward the vehicle window glass are arranged on the vehicle upper side of the air conditioning case (2), and the heating heat exchanger (19). The air that has passed from below to above flows through the defroster outlet openings (20 to 23), and the air that has passed through the heating heat exchanger (19) from above to below flows into the foot outlet openings (36, 3).
The vehicle air conditioner according to any one of claims 1 to 3, wherein the air conditioner flows through (7). 5. The air-conditioning case (2) is installed on an instrument panel (100) in front of a vehicle cabin so as to be located at a substantially central portion in a vehicle left-right direction. The cooling fan (7a-7d) is installed on the side, the cooling heat exchanger (16) is installed on the vehicle rear side from the blowing fan (7a-7d), and the blowing fan (7a-7d) The air passage in the air conditioning case (2) is moved by the operation of the cooling heat exchanger (1).
The vehicle air conditioner according to any one of claims 1 to 4, wherein air flows from the front of the vehicle to the rear of the vehicle in the order from 6) to the heating heat exchanger (17).