JPH09216511A - Automotive air conditioners - Google Patents

Abstract

(57) Abstract: In an air conditioner unit in which an evaporator 21 is installed at a substantially horizontal angle, the assembly structure is simplified and the drainage of condensed water in the evaporator 21 is improved. SOLUTION: Cases 23 and 24 of an air conditioner unit 2
The evaporator 21 is arranged substantially horizontally in the interior of the evaporator 21 so that the air blown by the blower is introduced from the lower side of the evaporator 21 to the upper side, and the case of the air conditioner unit 2 is vertically arranged with a dividing surface in the vertical direction. Crack type 2
It is composed of two cases 23 and 24. Evaporator 21
Is inclined downward by a small angle toward the front side of the blown air, and the condensed water guide member 30 is formed separately from the cases 23 and 24 at the inclined forward end of the evaporator 21.

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 an automobile, and more particularly to an air conditioner unit in which air blown from a blower is introduced from the lower side, and a heat exchanger for air conditioning is installed on the downstream side thereof at a substantially horizontal angle. Regarding the assembly structure.

[0002]

2. Description of the Related Art The present applicant has previously filed Japanese Patent Application No. 7-2355.
In patent applications such as No. 05, a cooling heat exchanger (evaporator of a refrigeration cycle) is omitted in the air conditioner unit in order to reduce the size of the air conditioner unit installed in the passenger compartment of the air conditioner for automobiles. Placed horizontally,
It has been proposed that a heating heat exchanger (heater core) is arranged substantially horizontally above the cooling heat exchanger and a blower is arranged beside the air conditioner unit.

In the device of this prior application, the blown air from the blower is blown in a substantially horizontal direction to blow below the cooling heat exchanger, and then the blown air is bent upward from below the cooling heat exchanger section. Then, after passing through the cooling heat exchanger and the heating heat exchanger to control the temperature to a predetermined temperature, air is blown into the vehicle interior. According to such an arrangement layout of the prior application, it is not necessary to provide a ventilation duct portion in the vehicle front-rear direction of the air conditioner unit, and the dimension of the air conditioner unit in the vehicle front-rear direction can be significantly shortened.
By arranging the both heat exchangers in the horizontal direction, the size in the vertical direction of the vehicle can be shortened and the size of the air conditioner unit can be reduced.

[0004]

However, when the inventors of the present invention made a trial study on the air conditioner unit according to the above-mentioned prior application, it was found that the following problems would occur.
That is, in the air conditioner unit of the prior application, for cooling,
The unit case that houses the heat exchanger for heating, the door for air flow control, etc. is divided into three laterally split type cases that have a horizontal dividing surface, and heat is exchanged within the three divided unit cases. Since the container, the door, etc. are stored, three molding dies are required when molding the unit case with resin, and the die cost is high. Moreover, the unit case is divided into three parts, and the air conditioner unit is divided into three parts. Assembly becomes complicated, the number of assembly steps increases, and the manufacturing cost rises.

In view of the above points, an object of the present invention is to simplify the assembling structure in an air conditioner unit in which an air conditioning heat exchanger is installed at an angle substantially horizontal.
Another object of the present invention is to provide an automobile air conditioner with improved drainage of condensed water in a cooling heat exchanger.

[0006]

In order to achieve the above object, the present invention employs the following technical means. In the invention according to claim 1, the case (23,
24), the air conditioning heat exchangers (21, 22) are arranged substantially horizontally, and blown air blown by the blower (14) is introduced from below the air conditioning heat exchangers (21, 22) It is characterized in that the case (23, 24) of the air conditioner unit (2) is composed of two vertically split type cases (23, 24) having vertical dividing surfaces. .

Thus, when molding the unit case with resin, only two molding dies are required, and the mold cost can be reduced, and the air conditioner unit can be assembled with the two unit cases, so the assembling work is simplified. The number of assembly steps can be reduced, and the manufacturing cost can be reduced. In the invention according to claim 2, at least a cooling heat exchanger (21) for cooling the blown air is provided as the air conditioning heat exchanger (21, 22), and the cooling heat exchanger (21) is Condensation generated in the cooling heat exchanger (21) is tilted downward by a small angle toward the front side in the blowing direction of the blown air, and at a position below the inclined forward end of the cooling heat exchanger (21). It is characterized by disposing a drainage guide member (30) for guiding water downward.

As a result, the condensed water collected at the inclined forward end of the cooling heat exchanger (21) forms a bridge with the drainage guide member (30) and travels on the surface of the drainage guide member (30). It drops downward almost continuously. Therefore, even if the cooling heat exchanger (21) is arranged substantially horizontally and the layout is such that air is blown from below, the condensate does not grow into a large lump in the cooling heat exchanger (21) and smoothly flows. It can be dropped downward and the drainage of condensed water can be greatly improved.

Particularly, in the invention according to claim 3, the drainage guide member (30) is provided in the case (2) of the air conditioner unit (2).
It is characterized in that it is formed as a separate body from 4) and is fixed to the lower part of the inclined forward end of the cooling heat exchanger (21). Thus, by forming the drainage guide member (30) separately from the case (24) of the air conditioner unit (2),
Since the drainage guide member (30) does not hinder the die removal at the time of molding the case (24), the molding die of the case (24) becomes simple and the die cost can be further reduced.

In the invention according to claim 4, the drain guide member (30) is inserted into and fixed to the heat exchange core portion (21h) of the cooling heat exchanger (21).
b) and the heat exchange core part (2) of the cooling heat exchanger (21)
Condensed water receiving surface (30a) for receiving condensed water from 1h)
And a plurality of condensed water guide pieces (30a) hanging downward from the condensed water receiving surface (30a) are integrally formed, and the condensed water guide pieces (30a) are formed on the bottom surface of the case (24) of the air conditioner unit (2). It is characterized in that a condensed water drain port (29) is opened near the lower end of 30a).

Thus, the drainage guide member (30) can be easily fixed only by inserting the clamp portion (30b) into the heat exchange core portion (21h). Furthermore, once the condensed water from the heat exchange core portion (21h) of the cooling heat exchanger (21) is received by the condensed water receiving surface (30a),
From this receiving surface (30a), a plurality of condensed water guide pieces (30
Condensed water can be led to a). Therefore, even if there is dimensional variation in manufacturing on the side of the heat exchange core portion (21h),
Condensed water can be smoothly discharged from the receiving surface (30a) through the plurality of condensed water guide pieces (30a).

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

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention shown in the drawings will be described. 1 and 2, an engine room A and a vehicle room B of an automobile are partitioned by a partition plate C (generally called a fire wall and made of an iron plate).
The blower unit 1 of the air conditioner is arranged offset from the center of the instrument panel P in the vehicle compartment B in the vehicle width direction (for a right-hand drive vehicle, offset to the left in the vehicle width direction).

The blower unit 1 has an inside / outside air switching box 1 in which an air inside the vehicle and an air outside the vehicle are switched and introduced at an upper portion thereof.
The inside / outside air switching box 11 has an outside air introduction port 12 and an inside air introduction port 13, and an inside / outside air switching door (not shown) for opening and closing the two introduction ports 12, 13 is provided in the inside. ) Is installed. Below the inside / outside air switching box 11,
As shown in FIG. 3, a blower 14 is arranged, and the blower 14 is a centrifugal multi-blade fan (sirocco fan) 1
5, a fan drive motor 16 and a scroll casing 17.

The rotating shaft of the fan 15 is arranged so as to be oriented substantially in the vertical direction, and the rotation of the fan 15 sucks the air from the inside / outside air switching box 11 through a bellmouth-shaped suction port (not shown) above the scroll casing 17. The air is blown toward the outlet of the scroll casing 17 in a substantially horizontal direction (from the left side to the right side of the vehicle compartment B as understood from FIG. 1).

On the other hand, the air conditioner unit 2 incorporating a heat exchanger for air conditioning, which will be described later, is arranged in the vehicle compartment B at a substantially central portion of the instrument panel P. In this air conditioner unit 2, an evaporator (cooling heat exchanger) 21 of the refrigeration cycle is installed in a substantially horizontal state, and blown air from the blower unit 1 is introduced from the lower side thereof.

A heater core (heating heat exchanger) 22 is installed in a substantially horizontal state on the air downstream side (upper side of the passenger compartment) of the evaporator 21.
Is for heating blast air using engine cooling water (warm water) as a heat source. A plurality of blowout air passage portions are provided in the upper portion of the heater core 22 in the vehicle interior (on the air downstream side).

That is, as the blowout air passage portion,
A center face outlet air passage 25, a side face outlet air passage 26, a foot outlet air passage 27, and a defroster outlet air passage 28 are provided. The center face outlet air passage 25 is a center face (upper) outlet (not shown) that blows air toward the passenger's head in the passenger compartment.
Communicate with The side face blow-out air passage 26 similarly communicates with a side face blow-out port (not shown).

The foot outlet air passage 27 communicates with a foot outlet (not shown) that blows air toward the feet of the passenger in the passenger compartment. Defroster outlet air passage 28
Communicates with a defroster outlet (not shown) that blows air toward the window glass. Although not shown, in the air conditioner unit 2, a plurality of blowout air passages 25, 26, 27, 28 are provided in the upper portion of the heater core 22 as door means (a plate door, a rotary door having an arc-shaped outer peripheral surface,
It has a built-in blowout mode switching unit that opens and closes by a film door. The plurality of blowout air passages 25, 26, 27, 28 are provided by the door means of the blowout mode switching unit.
A plurality of blowing modes such as a well-known face blowing mode, a bi-level blowing mode, a foot blowing mode, a defroster blowing mode, and a foot / defroster combined blowing mode can be selected by opening and closing.

1 and 2 and FIG. 3, the specific form of the blowout air passage portion is shown in a slightly modified form, but it is not an essential part of the present invention, and the description of the differences is omitted. . .
Further, in this example, a hot water control valve (not shown) that controls the flow rate of hot water to the heater core 22 is used as a temperature control means for air conditioning.
The hot water control valve controls the flow rate of hot water to the heater core 22, adjusts the amount of air heated by the heater core 22, and controls the temperature of air blown into the vehicle interior.

FIG. 4 shows a schematic structure of the evaporator 21. A thin plate of metal such as aluminum having excellent thermal conductivity and corrosion resistance is laminated in the vertical direction in the figure to form a tube 21f.
And a corrugated fin 21g is interposed between the tubes 21f to form a core portion 21h. Then, on one end (left end) side of the core portion 21h, the distribution of the refrigerant to the many tubes 21f,
And the tank part 21e which collects the refrigerant from the multiple tubes 21f is arranged, and the flow of the refrigerant in the tube 21f is made to make a U-turn (see arrow a) on the other end (right end) side of the core part 21h. There is.

A refrigerant inlet 21i into which a gas-liquid two-phase refrigerant whose pressure is reduced by a temperature-operated expansion valve (pressure reducing means) 21b flows into the tank portion 21e, and a refrigerant outlet 21j from which a gas refrigerant evaporated in the core portion 21h flows out. Is provided. FIG.
Shows the assembly structure of the present embodiment. In the blower unit 1 part, the case is divided into three laterally split type parts having horizontal dividing surfaces, that is, the inside / outside air switching box 11
The scroll casing 17 and the upper lid 17a of the case 17 are divided into three parts. The bell mouth-shaped suction port 18 described above is opened in the upper lid portion 17a.

The fan 15 of the blower 14 is integrally connected to the rotary shaft 16a of the motor 16 and then disposed in the scroll casing 17, and the motor 16 is fixed to the scroll casing 17 by its flange portion 16b. To be done. Next, the scroll casing 17
The upper lid portion 17a is assembled to the upper end portion of the above, and the inside / outside air switching box 11 is arranged above the bell mouth-shaped suction port 18 of the upper lid portion 17a, and the upper lid portion 17a and the inside / outside air switching box 11 are integrally assembled.

On the other hand, in the air conditioner unit 2 part, the case is divided into left and right sides of a vertical crack type having a dividing surface in the vertical direction.
It is divided into two cases 23 and 24. After storing parts such as the evaporator 21, the heater core 22 and the air flow control door in either one of the two cases 23 and 24 of the vertical crack type, the other case is well known to this one case. The connection means (for example, a metal spring clip, screwing, etc.) is used for connection.

In the two cases 23 and 24, the space surrounded by the two-dot chain line B shows the storage space of the evaporator 21. The broken line C indicates the support surface of the heater core 22. 8B and 8C described later also show the same part. Further, the inside / outside air switching box 11 and the scroll casing 1
7, the upper lid 17a, and the cases 23 and 24 are made of ABS.
It is formed of a resin having a certain degree of elasticity such as resin.

By the way, in the above-mentioned air conditioning unit layout, the evaporator 21 is arranged in a substantially horizontal direction, and the blowing air is blown upward from below, so that the falling direction of the condensed water and the blowing direction are opposite to each other. Therefore, improvement of drainage of the condensed water generated in the evaporator 21 becomes a problem. Therefore, in the present embodiment, in order to improve the drainage of the condensed water, the following various measures are taken. That is, first, the evaporator 21 is
It is placed slightly inclined from the horizontal plane. More specifically, as shown in FIGS. 3 and 5, the evaporator 2 is blown to the lower side of the evaporator 21 toward the front side (the right direction in FIGS. 3 and 5) of the blown air blown by the blower 14.
1 is arranged to incline downward by a small angle. Here, the inclination angle θ of the evaporator 21 is 10 to
It is preferable to set the water retention amount of the evaporator 21 itself to be small within the range of 30 °.

Second, the tube 21 of the evaporator 21
f is arranged so as to extend in the same direction as the blowing direction of the blown air (the direction from the left side to the right side in FIGS. 3 and 5),
As a result, the condensed water is pressed by the blown air on the surface of the tube 21f and smoothly moves to the inclined forward end (right end portion in FIGS. 3 and 5). Here, the condensed water generated in the evaporator 21 is drawn out from the condensed water discharge pipe 29 provided at the inclined forward end portion of the evaporator 21 on the lower side (air upstream side) of the evaporator 21. It is integrally molded at the bottom of the resin case 24.

Further, the inventors of the present invention have made detailed and experimental observations on the behavior of the air conditioning unit layout when the condensed water is discharged, and have found that the following drainage behavior occurs. That is, the condensed water gathers at the inclined forward end of the evaporator 21 due to gravity and the pressure of the blown air,
It was found that when the condensed water mass grows to a certain size, it drops downward and repeats an intermittent drainage drop motion.

Therefore, in view of the above drainage behavior, the present inventor considers the drainage behavior of the condensed water to the condensed water discharge pipe 29 side of the case 24 before the lump of the condensed water grows in order to smoothly discharge the condensed water. We have come up with a structure that allows continuous drainage. For this reason, as shown in FIG. 6, the tube 21f of the evaporator 21 is almost in contact with the tube 21f of the evaporator 21 (a minute gap may be provided) at a lower portion of the inclined forward end of the evaporator 21 where condensed water W is likely to concentrate. , Drainage guide member 3
0 is arranged.

This drainage guide member 30 is shown in FIG.
As shown in FIG. 5, the case 24 is formed separately from the case 24 and is resin-molded independently. Like the case 24, the drainage guide plate 30 is preferably made of a resin having some elasticity such as ABS resin, and has a condensed water receiving surface 30a in the shape of a rectangular frame. This condensed water receiving surface 30
A plurality of (four in this example) clamp portions 30b project upward from a. As shown in FIG. 6A, the clamp portion 30b has a core portion 21 of the evaporator 21.
The hose tubes 21f are press-fitted into each other, and the drainage guide plate 30 can be held and fixed to the evaporator 21 by the frictional force generated by the press-fitting.

A large number of condensed water guide pieces 30c hanging downward from the condensed water receiving surface 30a are integrally formed in parallel. The condensed water guide piece 30c has a triangular shape with a narrowed lower end. The condensed water discharge pipe 29 is arranged near the lower end of the condensed water guide piece 30c. Further, as shown in FIG. 6 (b), the condensed water guide pieces 30 c of the drainage guide member 30 are located in the lower part of the inclined forward end of the evaporator 21 over the entire area in the depth direction at a predetermined interval, in the blowing direction. They are arranged in parallel.

Next, the operation of this embodiment with the above configuration will be described. In FIG. 3, the air that has flowed in from the inside / outside air switching box 11 flows in the scroll casing 17 in a substantially horizontal direction by the blower fan 15, and flows into the lower portion of the evaporator 21. Then, the blown air changes its direction upward and passes through the evaporator 21, where it is dehumidified and cooled, then flows further upward, is introduced into the heater core 22, and is heated here.

In the case of this example, a hot water control valve (not shown) for controlling the amount of hot water to the heater core 22 is used as the air conditioning temperature control means, and the hot water control valve is used to adjust the hot water flow rate. The so-called flow control reheat method is used to obtain the desired blown air temperature. Then, the conditioned air reheated to the desired temperature by the heater core 22 is distributed to a predetermined outlet by an outlet mode switching unit disposed above the heater core 22.

Further, in the present embodiment, with the above-mentioned configuration, the following operational effects can be obtained. The evaporator 21 and the heater core 22 are both arranged in a substantially horizontal direction, and are arranged in a vertically overlapping layout.
Since the air is guided to the upper side, the air duct unit is not required in the vehicle front-rear direction of the air conditioner unit 2,
The size of the air conditioner unit 2 in the vehicle longitudinal direction can be significantly reduced.

Further, since the vertical space of the heat exchanger portion can be made small at the same time, the air conditioner unit 2 can be easily mounted on the vehicle. As shown in FIG. 5, the case of the air conditioner unit 2 is
It is divided into two vertically cracked type left and right cases 23 and 24 having a split surface in the vertical direction, and the evaporator 21, the heater core 22 and the air flow control door are provided in the vertically cracked cases 23 and 24. Since parts such as the above are stored, when molding the case of the air conditioner unit 2 with resin compared with the device of the prior application, only two molding dies are needed, and the mold cost can be reduced and Assembly is also easy, and the number of assembly steps can be reduced.

Since the evaporator 21 is inclined downward by a small angle toward the front side of the blowing air of the blowing air blown downward, the tubes 21f of the evaporator 21 are also arranged in the blowing direction. , The condensed water is pressed against the surface of the tube 21f by the blown air, and the inclined forward end of the evaporator 21 smoothly (FIG. 3,
Gather on the right side of 5).

Moreover, since the vertical direction drainage guide member 30 is disposed so as to be substantially in contact with the evaporator 21, a portion below the inclined forward end of the evaporator 21 is arranged.
As shown in FIG. 6 (a), the lump of condensed water W collected at the inclined forward end forms a bridge with the drainage guide member 30, and the condensed water receiving surface 30 a of the drainage guide member 30 and the condensed water guide piece. Condensed water W drops downward almost continuously along the surface of 30c.

Therefore, even if the evaporator 21 is arranged substantially horizontally and the layout is such that the air is blown from below, the condensed water W does not grow into a large lump in the evaporator 21 and smoothly drops downward. Since the condensed water discharge pipe 29 is arranged near the narrowed lower end of the condensed water guide piece 30c, the condensed water dropped from the lower end of the condensed water guide piece 30c smoothly flows into the pipe 29, Is discharged.

In addition, due to variations in the dimensions of the evaporator 21 during manufacturing, even if the positions of the lower surfaces of the many tubes 21f of the evaporator 21 and the multiple condensed water guide pieces 30c are displaced, the drainage guide member. Since the condensed water receiving surface 30a of 30 crosses the inclined forward end of the evaporator 21 and is located on all the lower surfaces of a large number of tubes 21f, the condensed water from the tubes 21f must drop onto the receiving surface 30a. Since it can be distributed to a large number of condensed water guide pieces 30c, the condensed water can be smoothly discharged without being affected by the dimensional variations on the evaporator 21 side.

Since the drainage guide member 30 is molded separately from the case 24, when the case 24 is molded,
This is convenient because the drainage guide member 30 does not hinder the die cutting. As shown in FIG. 8, if the drainage guide member 30 is integrally molded with the case 24, the space (hatched portion a) at the back of the drainage guide member 30 becomes an undercut portion on the die cutting, and this undercut portion a Due to the existence, die cutting in the direction of arrow D is not possible. Therefore, in order to mold this undercut portion (i), a slide core is additionally required in addition to the upper and lower molds, and the mold cost becomes high.

On the other hand, in the present embodiment, the drainage guide member 30 is formed separately from the case 24, and the drainage guide member 30 is incorporated into the case 24 together with the evaporator 21 after the case 24 is formed. Therefore, the undercut portion (1) does not occur, and therefore the slide core is not required, and the die cost can be reduced. Since the condensed water of the evaporator 21 flows down to the lower air upstream side, the falling condensed water is warmed by the blast air having a high temperature before cooling. Therefore, since the outer surface temperature of the cases 23 and 24 does not drop so much, the dew condensation on the cases 23 and 24 is significantly reduced or disappears. The heat insulating material) can be eliminated, and the cost can be further reduced. (Other Embodiments) Although the clamp portion 30b of the drainage guide member 30 is press-fitted between the tubes 21f of the evaporator 21 to fix the drainage guide member 30 in the above embodiment, the drainage guide member 30 is fixed to the case 24. It may be fixed to the side by means such as adhesion, screwing, and riveting.

Further, in the above embodiment, the drainage guide member 3
The condensed water guide piece 30c of No. 0 has a triangular shape in which the lower end portion side is narrowed (pointed), but is not limited to this triangular shape. For example, another shape such as a strip shape may be used.
Further, in the above-described embodiment, the condensed water discharge pipe 29 has a shape that hangs downward from the bottom surface of the case 24, so that the hole shape of the pipe 29 cannot be formed by die-cutting in the direction of arrow d. Therefore, the hole shape of the condensed water discharge pipe 29 is formed by the slide core, but the condensed water discharge pipe 29 is directed in the direction parallel to the bottom surface of the case 24 as shown by the one-dot chain line E in FIG. Then, the hole shape of the condensed water discharge pipe 29 can be formed without the slide core.

Further, the evaporator 21 is not limited to the above-mentioned laminated type, but a so-called sur-pain type in which a multi-hole flat tube is bent in a meandering shape and corrugated fins are combined with the meandering tube, etc. It may be in the form of. Further, in the above-described embodiment, the flow control reheat system using the hot water control valve for controlling the amount of hot water to the heater core 22 has been described as the air conditioning temperature control means, but the warm air passing through the heater core 22 and the heater core are also described. The present invention can also be applied to an air mix system using an air mix damper that controls the air flow rate with the cold air that does not pass through 22.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing a state in which an automobile air conditioner according to an embodiment of the present invention is mounted on a vehicle.

FIG. 2 is a schematic perspective view of FIG.

3 is an enlarged perspective view of an automobile air conditioner portion in FIG. 2. FIG.

FIG. 4 is a perspective view showing a schematic configuration of an evaporator according to an embodiment of the present invention.

FIG. 5 is an exploded perspective view showing an assembling method according to the embodiment of the present invention.

FIG. 6A is a cross-sectional view of a main part showing an arrangement state of a drainage guide member according to an embodiment of the present invention, and FIG. 6B is a layout view of an evaporator, a drainage guide member, and a case viewed from the drainage guide member side. is there.

FIG. 7 is a perspective view showing a drainage guide member in the embodiment of the present invention.

FIG. 8A is a front view of a case as a comparative example with respect to the embodiment of the present invention, and FIG. 8B is a side view of the case.

[Explanation of symbols]

1 ... Blower unit, 2 ... Air conditioner unit, 14 ...
Blower, 21 ... Evaporator, 22 ... Heater core, 2
3, 24 ... Case, 29 ... Condensed water discharge pipe, 30 ... Drainage guide member, 30a ... Condensed water receiving surface, 30b ... Clamp part, 30c ... Condensed water guide piece.

Claims (5)

[Claims] 1. A blower unit (1) having a blower (14) for blowing conditioned air, and heat exchange with blower air that is placed adjacent to this blower unit (1) and is blown by the blower (14). And an air conditioner unit (2) having an air conditioning heat exchanger (21, 22) for performing the air conditioning heat exchanger (21, 22) in the case (23, 24) of the air conditioner unit (2). The blast air arranged substantially horizontally and blown by the blower (14) is introduced from below the air conditioning heat exchangers (21, 22),
The case (23, 24) of the air conditioner unit (2) is designed to be led out upward.
Is an air-conditioning system for an automobile, characterized in that it is composed of two vertically split type cases (23, 24) having split surfaces in the vertical direction. 2. The air-conditioning heat exchanger (21, 22) includes at least a cooling heat exchanger (21) for cooling the blown air, and the cooling heat exchanger (21) includes the blown air. Is inclined downward by a small angle toward the front side in the air blowing direction, and the condensed water generated in the cooling heat exchanger (21) is formed at a position below the inclined forward end of the cooling heat exchanger (21). The vehicle air conditioner according to claim 1, further comprising a drainage guide member (30) arranged to guide the pipe downward. 3. The drainage guide member (30) is formed separately from the case (24) of the air conditioner unit (2),
The vehicle air conditioner according to claim 2, wherein the cooling heat exchanger (21) is fixed to a lower portion of an inclined forward end of the cooling heat exchanger (21). 4. The drain guide member (30) includes a clamp portion (30b) inserted into and fixed to a heat exchange core portion (21h) of the cooling heat exchanger (21), and the cooling heat. A condensed water receiving surface (30a) that receives condensed water from the heat exchange core portion (21h) of the exchanger (21), and a plurality of condensed water guide pieces (30a) that hang downward from the condensed water receiving surface (30a). ) Is integrally molded with the case (24) of the air conditioner unit (2), and a condensed water discharge port (29) is opened in the vicinity of the lower end of the condensed water guide piece (30a). The vehicle air conditioner according to claim 3, wherein the air conditioner is a vehicle air conditioner. 5. The cooling heat exchanger (2) in the case (23, 24) of the air conditioner unit (2).
The air conditioner for a vehicle according to any one of claims 2 to 4, characterized in that a heating heat exchanger (22) for heating the blown air is arranged substantially horizontally above (1). .