JP2007145078A - Air conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle, which prevents reduction of an air volume of blowing air while preventing condensed water from splashing in a blowing path at the time of rapid vehicle turning or the like. <P>SOLUTION: This air conditioner for a vehicle comprises: an air conditioning case forming a flow path of blowing air toward a cabin; a cooling heat exchanger 6 housed in an air conditioning case 3a and cooling the blowing air in the air conditioning case 3a; and a drainage hole 41 draining the condensed water generated in the cooling heat exchanger 6. The air conditioning case 3a is a two-divided case 3a having division faces 22 divided in a vertical direction, and the divided case 3a is integrated, so as to hold the cooling heat exchanger 6. A rib 36 extending toward the lower side than a horizontal direction from the air conditioning case 3a on an upstream side of the blowing air of the cooling heat exchanger 6 is installed to the air conditioning case 3a, so that a water retention room 42 is formed between the air conditioning case 3a and the rib 36. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle air conditioner, and is applied to, for example, an air conditioner case having a rib structure for preventing condensate generated in a cooling heat exchanger of a vehicle air conditioner from being scattered upstream of a blown air flow. Therefore, it is suitable.

  Conventionally, as a vehicular air conditioner, a cooling heat exchanger that cools blown air, and a drain that houses the cooling heat exchanger and discharges condensed water generated in the cooling heat exchanger to the outside There is known an air conditioning case having a hole at the bottom, and discharging condensed water accumulated at the bottom of the air conditioning case to the outside through a drain hole (see Patent Document 1, etc.).

Patent Document 1 discloses a technique for preventing the condensed water accumulated at the bottom from scattering into the air passage when the vehicle is turning sharply. In this technique, by providing a water stop rib in the vertical direction on the upstream side in the air passage, etc., it is possible to prevent the air from entering the electric motor side such as a motor of a blower arranged on the upstream side of the air flow.
JP-A-11-240327

  In the prior art, since the water stop ribs block the flow of the blown air in the blower passage, the airflow of the air conditioner decreases and the airflow distribution at the front of the cooling heat exchanger is uneven, resulting in poor cooling performance. May be incurred.

  The present invention has been made in consideration of such circumstances, and its purpose is to prevent the condensed water from scattering into the air passage when the vehicle is turning sharply, and to reduce the air volume of the air. The object is to provide a vehicle air conditioner that can be prevented.

  In order to achieve the above object, the present invention comprises the following technical means.

In invention of Claims 1 thru | or 7, it accommodates in the air-conditioning case (3a) which forms the flow path of the ventilation air which goes into a vehicle interior, and an air-conditioning case (3a), and blows air in an air-conditioning case (3a) A cooling heat exchanger (6) for cooling and a drain hole (41) provided at the bottom of the air conditioning case (3a) for draining condensed water generated in the cooling heat exchanger (6) are provided. 3a) is a two-divided case (3a) having a dividing surface (22) that divides in the vertical direction, and this divided case (3a) is integrated so as to hold the cooling heat exchanger (6). In the device
The air conditioning case (3a) is provided with a rib (36) extending from the air conditioning case (3a) to the lower side of the horizontal direction on the upstream side of the blast air of the cooling heat exchanger (6). ) And a rib (36), a water retention chamber (42) is formed.

  According to this, since the rib (36) extending from the air conditioning case (3a) toward the lower side than the horizontal direction is provided on the upstream side of the blast air of the cooling heat exchanger (6), the flow of the blast air is Ribs (36) can be arranged so that (36) does not block. In addition, since the water retention chamber (42) is formed between the air conditioning case (3a) and the rib (36), the condensed water accumulated at the bottom of the air conditioning case (3a) becomes a wall surface when the vehicle turns suddenly. Even if there is a case of moving along the blast air upstream along 33, the water retention chamber (42) can prevent movement of the condensed water to the blast air upstream side.

  Therefore, it is possible to prevent the condensed water from being scattered in the air passage when the vehicle turns suddenly, and to prevent a reduction in the air volume of the air.

  Moreover, in invention of Claim 2 thru | or 3, a bending part (35b) is provided in the wall surface (33a, 35a) of the air-conditioning case (3a) from the base end of a rib (36) to the discharge hole (41). It is characterized by being.

  According to this, since the bent part (35b) is provided in the wall surface (33a, 35a) of the air conditioning case (3a) from the base end of the rib (36) to the discharge hole (41), the flow of the blown air is reduced. The volume of the water retention chamber (42) can be increased without blocking. Therefore, it is possible to prevent a decrease in the air volume of the blown air and to increase the water retention amount for preventing the condensate from splashing when the vehicle turns suddenly.

  The invention according to claim 3 is characterized in that the bent portion (35b) is located closer to the proximal end of the rib (36) than the distal end of the rib (36).

  According to this, it is preferable that a bending part (35b) exists in the base end side of a rib (36) rather than the front-end | tip of a rib (36). Thereby, the water retention amount of the water retention chamber (42) can be effectively increased using the length of the rib (36) extending downward from the air conditioning case (3a) in the horizontal direction.

  Further, the invention according to claim 4 is characterized in that the rib (36) is on the upstream side of the blown air with respect to the region below the cooling heat exchanger (6) in the direction of gravity.

  According to this, it is preferable that a rib (36) exists in the upstream of blowing air rather than the area | region in the gravity direction downward direction of the heat exchanger for cooling (6). As a result, even if the condensate falls underneath the gravity direction of the cooling heat exchanger (6) during a sudden turn of the vehicle or the like, the condensate is retained in the water retention chamber (42) by the rib (36). Therefore, it is possible to reliably prevent the condensed water from moving upstream of the blast air when the vehicle is turning sharply.

  Further, in the invention according to claims 5 to 7, the cooling heat exchanger (6) is disposed in an inclined manner in the air conditioning case (3a), and the blown air is introduced from below and led out upward. It is characterized by becoming.

  According to this, it is preferable that the cooling heat exchanger (6) is disposed in an inclined manner in the air conditioning case (3a, 3b), and the blown air is introduced from below and led out upward. As a result, the cooling heat exchanger (6) is inclined and arranged in the air conditioning case (3a), so the condensed water generated in the cooling heat exchanger (6) does not immediately fall downward in the direction of gravity due to its own weight. However, since it flows downward along the ventilation surface of the cooling heat exchanger (6), the bottom part where the condensed water accumulates is limited to the inclined lower end part side of the cooling heat exchanger (6). Therefore, the freedom of arrangement of the rib (36) provided in the air conditioning case (3a) can be improved.

  In particular, the invention according to claim 6 is characterized in that the rib (36) is in a region below the cooling heat exchanger (6) in the direction of gravity.

  According to this, a rib (36) can be arrange | positioned in the area | region below the gravity direction of the heat exchanger for cooling (6).

  In the invention according to claim 7, the air conditioning case (3a) is lower than the horizontal direction toward the drain hole (41) for guiding the blown air from below to the cooling heat exchanger (6). The rib (36) constitutes a part of the wall surface (33a).

  Thereby, a rib (36) can be arrange | positioned in an air-conditioning case (3a), without interrupting the flow of blowing air.

  In addition, the code | symbol in the parenthesis attached | subjected to each said means is an example which shows a corresponding relationship with the specific means as described in embodiment mentioned later.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a vehicle air conditioner according to the present invention will be described below with reference to the drawings.

(First embodiment)
FIG. 1 is a partial cross-sectional view showing a vehicle air conditioner of this embodiment.

  First, as shown in FIG. 1, the vehicle air conditioner includes a blower unit (not shown) and an air conditioning unit 3 that forms an adjustment unit that adjusts the temperature of the blown air blown from the blower unit. Has been. The blower unit is installed at the foot on the passenger seat side in an instrument panel (not shown) in the passenger compartment.

  The air conditioning unit 3 is installed so as to be aligned with the blower unit in the vehicle width direction, and is installed in the center in the vehicle width direction. The blower unit is provided with an inside air introduction port and an outside air introduction port (not shown), an inside / outside air switching door (not shown) for selectively opening and closing these introduction ports, and a blower (not shown). The inside / outside air switching door and the blower are housed in a blower case (not shown), and the blower case forms a blower passage for blowing air.

  The blower includes a blower fan and a fan drive motor that drives the blower fan, and blows the inside air or the outside air selected by the inside / outside air switching door from the left direction in FIG. To do.

  Cases such as a blower case and an air conditioning case 3a described later are made of a molded product of a resin material having a certain degree of elasticity and relatively excellent strength, such as polypropylene.

  Next, the air conditioning unit 3 will be described below. The air conditioning unit 3 forms a flow path toward the vehicle interior by combining two divided cases 3a formed of a resin material such as polypropylene. In FIG. 1, one of the two divided cases 3a is shown for convenience of drawing.

  The two split cases 3a are composed of a split case (hereinafter also referred to as a first split case) 3a and a split case (not shown) (hereinafter also referred to as a second split case), and the split surface 22 is formed on the paper surface of FIG. Have.

  In this air conditioning unit 3, the evaporator 6 as a cooling heat exchanger that cools the air (inside air or outside air) taken into the air conditioning unit 3 and the air (inside air or outside air) that has passed through the evaporator 6 are heated. A heater core (not shown) as a heat exchanger for heating is stored and held.

  The evaporator 6 is a component of a refrigeration cycle apparatus (not shown) mounted on the vehicle. The refrigeration cycle apparatus includes a compressor, a condenser, a decompression unit, and an evaporator that is the evaporator 6. Is a well-known one. The heater core is a well-known one that heats air that passes through the engine coolant of the vehicle as a heat source.

  The two divided cases 3a have a so-called vertically-divided case structure having a dividing surface 22 in the vertical direction (vertical direction in FIG. 1). It can be divided. Although not shown, the two divided cases 3a are coupled by screws, C-shaped clips, claw fittings, or the like as coupling means to form an integrated air conditioning unit. When the first divided case 3a and the second divided case are coupled, the evaporator 6 and the heater core are stored and held so as to be sandwiched between the divided cases 3a.

  In this state, the evaporator 6 and the heater core are arranged so as to be aligned in the vehicle vertical direction. Note that the positional relationship between the evaporator 6 and the heater core is not limited to be arranged in the vehicle vertical direction, and may be arranged in the vehicle longitudinal direction.

  Regarding the drain structure that discharges the condensed water generated in the evaporator 6 of the air conditioning unit 3 to the outside, and the condensed water leakage prevention structure that prevents the condensed water accumulated in the drain structure from scattering when the vehicle is turning, etc. This will be described later.

  When both the split cases 3a are assembled together and the evaporator 6 and the heater core are housed in the air conditioning unit 3, the cold air passage (not shown) in which the cool air passing through the evaporator 6 bypasses the heater core 7 in the air conditioning unit 3. And a hot air passage (not shown) through which the heated hot air passes through the heater core 7 is formed. Further, in the air conditioning unit 3, door means such as an air mix door that adjusts the temperature of the conditioned air blown from the air conditioning unit 3 into the vehicle interior by adjusting the air volume ratio between the cold air passage and the hot air passage. Is provided.

  In a state where both split cases 3a are assembled together, the conditioned air adjusted in temperature by the air mix door 10 is provided downstream of the cold air passage 8 and the hot air passage 9 in the air conditioning unit 3. Furthermore, each flow path for guiding into the vehicle interior is formed. Specifically, this flow path is formed so as to extend downward (from the ground direction in FIG. 1 to the upper side (the celestial direction in FIG. 1)). A first flow path for guiding and a second flow path that extends downward from above and guides conditioned air toward the lower half of the occupant are provided.

  And the air downstream part of the 1st channel is formed so that it may branch into two, and the opening for defrosters for blowing air-conditioning wind toward the window glass inner surface of vehicles at each branch destination, A well-known opening with a face opening for blowing air-conditioned air toward the upper body of the occupant is formed.

  A well-known rear seat foot opening for blowing air-conditioned air to the feet of the rear seat occupant is formed at the air downstream portion of the second flow path. A well-known front seat foot opening for blowing air-conditioned air to the feet of the front seat occupant is formed on the upstream side of the rear seat foot opening. In the air conditioning unit 3, switching door means for opening and closing the above-described opening is provided so that the well-known blowing mode is switched.

  Next, the drain structure and the condensed water leakage prevention structure of the air conditioning unit 3 will be described. Both the split cases 3a guide the blown air from the ventilation passage (hereinafter referred to as the first ventilation passage) 31a connected to the blowing passage of the blowing unit in a substantially horizontal direction and the lower side of the evaporator 6, and the blowing air from the upper side of the evaporator 6. And a second ventilation path 31b to be led out.

  Specifically, a wall (hereinafter referred to as a first wall) 32 that forms a first ventilation path 31a through which blown air flows in a substantially horizontal direction, and a horizontal direction from the first wall 32 are formed in a lower portion of both split cases 3a. A second wall 33 that forms an inclined surface that is inclined downward, and a third wall 34 that is a bottom portion that accumulates condensed water in the downward inclined direction of the second wall 33 are formed.

  The 3rd wall 34 is arrange | positioned at the inclination lower end part side of the evaporator 6, and the drain hole 41 which drains condensed water is provided.

  As a result, the condensed water generated in the evaporator 6 flows along the ventilation surface of the evaporator 6 toward the inclined lower end of the evaporator 6, so that the condensed water is accumulated in the third wall 34 at the bottom, and from the drain hole 41 to the outside of the passenger compartment. Is discharged.

  Even if the condensed water falls below the evaporator 6 in the direction of gravity, the condensed water falls on the second wall 33, and therefore flows along the wall surface 33 a extending obliquely downward toward the third wall 34. , Collected on the third wall 34 side.

  Furthermore, in the present embodiment, the second wall 33 is provided with an opening 31 c for guiding condensed water to the water retention chamber 42 in the middle of the wall surface 33 a inclined toward the drain hole 41.

  The second wall 33 is provided with a fourth wall 35 that extends from the upper end side of the opening 31c to the upper side in the horizontal direction and is connected to the lower end side of the opening 31c. 35 and the second wall 33 opposite to this.

  The second wall 33 facing the fourth wall 35 is inclined downward from the coupling portion 35 in the horizontal direction in the coupling portion 37 where the second wall 33 on the upper end side of the opening 31c and the fourth wall surface 35 are connected. Thus, a rib 36 extending in a rib shape is formed.

  Here, the first wall 32, the second wall 33, the third wall 34, and the fourth wall constitute the wall of the air conditioning case. Further, the rib 36 constitutes a part of the second wall 33 having a wall surface 33a inclined downward from the horizontal direction.

  In the present embodiment, as shown in FIG. 1, the fourth wall 35 is preferably provided with a bent portion 35 b that bends the wall surface 35 a of the fourth wall 35. Thereby, it is possible to expand the volume amount (hereinafter referred to as water retention amount) in the water retention chamber 42. For example, by forming the bent portion 35b so that the fourth wall 35 extends downward from the coupling portion 37 toward the bent portion 35b, the water retention amount of the water retention chamber 42 can be significantly increased (see FIG. 1). ).

  In the present embodiment, as shown in FIG. 1, the bent portion 35 b is preferably located on the proximal end side of the rib 36 with respect to the distal end of the rib 36. Thereby, the water retention amount of the water retention chamber 42 can be effectively increased by utilizing the length of the rib 36 extending downward from the coupling portion 37 of the second wall 33 in the horizontal direction.

  Moreover, in this embodiment, as shown in FIG. 1, the rib 36 is arrange | positioned in the area | region below the gravity direction of the evaporator 6. As shown in FIG.

  Here, a comparative example for comparison with the effect of the present embodiment will be described with reference to FIG. In FIG. 4, the vehicle air conditioner of the comparative example guides the blown air from the first ventilation path 31 a that is connected to the blower flow path of the blower unit in a substantially horizontal direction and the lower side of the evaporator 6, as in this embodiment. A second ventilation path 31 b is provided for leading the blown air from above the evaporator 6.

  In the comparative example, when the vehicle suddenly turns, suddenly accelerates, or stops suddenly, the condensed water accumulated on the fourth wall 35 that is the bottom moves along the wall surface 33a of the second wall 33 to the upstream side of the blown air. Since there exists a possibility, the rib 39 is standingly arranged so that it may extend from the wall surface 32a of the 1st wall 32 in the direction (upward direction of FIG. 1) orthogonal to the flow direction of blowing air. In the configuration having such ribs 39, the flow of the blown air in the first ventilation path 31a is blocked, so the amount of air supplied to the evaporator 6 is reduced. In addition, since the blown air whose air flow is blocked by the ribs 39 is supplied to the ventilation surface of the evaporator 6, the air volume distribution on the ventilation surface becomes non-uniform, and the cooling performance in the adjusting unit that adjusts the temperature of the blown air There is a risk of worsening.

  On the other hand, in the present embodiment described above, the rib 36 extending downward from the horizontal direction from the second wall 33 constituting both the split cases 3 a is provided on the upstream side of the blowing air of the evaporator 6. Therefore, the ribs 36 can be arranged so that the flow of the blown air is not blocked by the ribs 36.

  Moreover, since the water retention chamber (42) is formed between the split case 3a and the rib 36, the condensed water accumulated at the bottom is blown along the wall surface 33a of the split case 3a when the vehicle turns suddenly. Even if there is a case of moving on the upstream side, the water retention chamber (42) can prevent movement of the condensed water to the upstream side of the blast air. This prevents the risk of intrusion into the motor side such as a motor of a blower arranged upstream of the air flow.

  Therefore, it is possible to prevent the condensed water from being scattered in the air passage when the vehicle turns suddenly, and to prevent a reduction in the air volume of the air.

  Moreover, in this embodiment, since the bent part 35b is provided in the wall surface 33a, 35a of the division | segmentation case 3a from the base end of the rib 36 to the discharge hole 41, it is a water retention chamber, without interrupting the flow of blowing air The volume of 42 can be expanded. Therefore, it is possible to prevent a decrease in the air volume of the blown air and to increase the water retention amount for preventing the condensate from splashing when the vehicle turns suddenly.

  In the present embodiment, the bent portion 35 b is preferably located closer to the proximal end of the rib 36 than the distal end of the rib 36. Thereby, the water retention amount of the water retention chamber 42 can be effectively increased by utilizing the length of the rib 36 extending downward from the coupling portion 37 of the second wall 33 in the horizontal direction.

  Further, in the present embodiment, the evaporator 6 is disposed in an inclined manner in the split case 3a, so the condensed water generated in the evaporator 6 does not immediately fall downward in the direction of gravity due to its own weight, but along the ventilation surface of the evaporator 6. Since it flows downward, the third wall 34 at the bottom where the condensed water accumulates is limited to the inclined lower end side of the evaporator 6. Therefore, it is possible to improve the degree of freedom of arrangement of the ribs 36 provided on the wall surface 33a in both split cases 3a.

  The rib 36 can be disposed in a region below the evaporator 6 in the gravitational direction as the position where the rib 36 is disposed.

  Furthermore, in this embodiment, since the evaporator 6 is inclined and arranged in the divided case 3a, it is lower than the horizontal direction toward the drain hole 41 for guiding the blown air to the evaporator 6 from below. It has the inclined 2nd wall 33, and the wall surface of the rib 36 comprises a part of wall surface 33a of the 2nd wall 33. As shown in FIG.

  Thereby, the rib 36 can be arrange | positioned in the ventilation path 31a, 31b in the division | segmentation case 3a, without interrupting the flow of blowing air.

(Second Embodiment)
Hereinafter, other embodiments to which the present invention is applied will be described. In the following embodiments, the same or equivalent components as those in the first embodiment are denoted by the same reference numerals, and description thereof will not be repeated.

  In the second embodiment, in the bent portion 35b of the fourth wall 35 described in the first embodiment, the bent portion 35b is replaced with the one arranged on the proximal end side of the rib 36 from the tip of the rib 36, as shown in FIG. As shown, the bent portion 135b is disposed on the distal end side of the rib 36 from the proximal end of the rib 36. FIG. 2 is a partial cross-sectional view showing the vehicle air conditioner of the present embodiment.

  As shown in FIG. 2, the opening 131 c is formed between the second wall 33 and the third wall 34. The fourth wall 135 extends from the third wall 34 at one end of the opening 31c and is configured to connect to the lower end side of the opening 31c.

  Even in this configuration, the fourth wall 135 is formed at an acute angle with respect to the rib 36 so as to extend obliquely downward from the coupling portion 37 toward the bent portion 135b. Thereby, the water retention chamber 42 can be reliably formed in the acute angle space sandwiched between the rib 36 and the fourth wall 135.

  Therefore, it is possible to secure a water retention amount of the water retention chamber 41 for preventing the movement of the condensed water to the upstream side of the blown air during a sudden turn of the vehicle.

(Third embodiment)
In the first embodiment, the bent portion 35b is provided on the wall surfaces 33a and 35a of the split case 3a from the base end of the rib 36 to the discharge hole 41.

  On the other hand, in the third embodiment, as shown in FIG. 3, the bent portion is prevented from being provided on the wall surface 233 a of the split case 3 a from the base end of the rib 136 to the discharge hole 41. FIG. 3 is a partial cross-sectional view showing the vehicle air conditioner of the present embodiment.

  As shown in FIG. 3, the second wall 233 has a wall surface 233 a inclined downward from the horizontal direction so as to connect the first wall 32 to the third wall 34.

  As shown in FIG. 3, the rib 236 extends from the wall surface 233a so as to be inclined downward from the horizontal direction. The rib 236 is disposed at an acute angle with respect to the wall surface 233a so as to extend obliquely upward from the coupling portion 237 toward the tip of the rib 236. Therefore, the wall surface 233a is arranged at an obtuse angle toward the downstream side of the air flow so as not to oppose the air flow.

  In addition, an opening 231c is formed between the tip of the rib 236 and the second wall surface 233 to guide the condensed water that moves to the upstream side of the blown air to the water retention chamber 242 when the vehicle suddenly turns.

  The water retention chamber 242 can be reliably formed in an acute angle space between the rib 236 and the second wall 233.

  Even if comprised in this way, it is possible to acquire the effect similar to 1st Embodiment.

(Other embodiments)
(1) In the present embodiment described above, the evaporator 6 has been described as being disposed in an inclined manner in the divided case 3a. However, as a vehicle air conditioner, the evaporator 6 is disposed in an inclined manner in the divided case 3a. Not only a thing but the evaporator 6 may be arranged upright in the vertical direction. In this case, it is preferable that the rib extending downward from the horizontal direction from the wall surface constituting the split case 3a is disposed on the upstream side of the blown air from the region below the evaporator 6 in the gravity direction.

  As a result, even if the condensed water may fall below the gravity direction of the evaporator 6 when the vehicle suddenly turns, the condensed water can be captured in the water retention chamber by the ribs, and therefore condensed when the vehicle suddenly turns. The movement of water to the upstream side of the blown air can be reliably prevented.

  (2) In the present embodiment described above, among the wall surfaces 32, 33, 34 constituting the split case 3a, the ribs 36, 236 are formed on the second wall 33 having the wall surface 33a inclined downward from the horizontal direction. It was described as providing. The ribs are not limited to be raised from the inclined second wall 33, but may be raised from the first wall extending in the horizontal direction toward the lower side than the horizontal direction.

  (3) In the present embodiment described above, the ribs 36 and 236 are provided so as to extend from the second walls 33 and 233 toward the lower side in the horizontal direction. In this embodiment, since both the split cases 3a are two split cases having the split surfaces 22 in the vertical direction, the resin structure of the split case 3a is undercut even if such ribs 36 and 236 are added. The divided case 3a can be easily molded with resin.

  (4) In the above-described embodiment, the drain hole 41 is divided into two parts by the dividing surface 22. However, the drain hole 41 is divided into the first divided case 3a and the second divided case 3a. It may be provided on either side of the split case.

1 is a partial cross-sectional view illustrating a vehicle air conditioner according to a first embodiment of the present invention. It is a fragmentary sectional view which shows the vehicle air conditioner of 2nd Embodiment. It is a fragmentary sectional view which shows the vehicle air conditioner of 3rd Embodiment. It is a fragmentary sectional view which shows the vehicle air conditioner of a comparative example.

Explanation of symbols

3 Air conditioning unit 3a Split case (air conditioning case)
6 Evaporator (cooling heat exchanger)
22 Dividing surface 31a, 31b Ventilation path (flow path of blown air)
32 1st wall 33 2nd wall 33a Wall surface 34 3rd wall (bottom part)
35 Fourth wall 35b Bending part 36 Rib 37 Coupling part 41 Drain hole

Claims (7)

An air conditioning case (3a) that forms a flow path of the blown air toward the passenger compartment;
A cooling heat exchanger (6) that is housed in the air conditioning case (3a) and cools the air blown in the air conditioning case (3a);
Provided at the bottom of the air conditioning case (3a), provided with a drain hole (41) for draining the condensed water generated in the cooling heat exchanger (6),
The air conditioning case (3a) is divided into two split cases (3a) having split surfaces (22) that are split in the vertical direction, and the split heat exchanger (6) is integrated by integrating the split cases (3a). In the vehicle air conditioner to hold,
In the air conditioning case (3a),
A rib (36) extending from the air conditioning case (3a) toward the lower side than the horizontal direction is provided on the upstream side of the blast air of the cooling heat exchanger (6),
A vehicle air conditioner characterized in that a water retention chamber (42) is formed between the air conditioning case (3a) and the rib (36).   The wall surface (33a, 35a) of the air conditioning case (3a) from the base end of the rib (36) to the discharge hole (41) has a bent portion (35b). The vehicle air conditioner described.   The vehicle air conditioner according to claim 2, wherein the bent portion (35b) is located on a proximal end side of the rib (36) with respect to a distal end of the rib (36).   The said rib (36) exists in the upstream of blowing air rather than the area | region in the gravity direction lower side of the said heat exchanger (6) for cooling, The Claim 1 characterized by the above-mentioned. Vehicle air conditioner.   The cooling heat exchanger (6) is disposed in an inclined manner in the air conditioning case (3a), and introduces blown air from below to lead out upward. The vehicle air conditioner according to any one of claims 1 to 4.   The vehicle air conditioner according to claim 5, wherein the rib (36) is in a region below the cooling heat exchanger (6) in the direction of gravity. The air conditioning case (3a) has a wall surface (33a) inclined downward from the horizontal direction toward the drain hole (41) for guiding the blown air from below to the cooling heat exchanger (6). Have
The vehicle air conditioner according to claim 5 or 6, wherein the rib (36) constitutes a part of the wall surface (33a).

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