JP4661464B2 - Air conditioner for vehicles - Google Patents

Description

  The present invention relates to a vehicle air conditioner that prevents condensed water generated in a heat exchanger for cooling from leaking into a passenger compartment.

  Conventionally, various structures for preventing the condensed water of the cooling heat exchanger from leaking into the passenger compartment have been proposed for vehicle air conditioners. For example, Patent Documents 1 and 2 propose a structure for preventing the leakage of condensed water in a vehicle air conditioner in which cooling heat exchangers are arranged in a substantially horizontal direction, and blown air passes through the cooling heat exchanger from below to above. Has been.

  However, all of these conventional techniques are peculiar to the type in which the cooling heat exchanger is arranged in a substantially horizontal direction, and cannot be applied to a normal type in which the cooling heat exchanger is arranged vertically in the vertical direction.

By the way, in a vehicle air conditioner, as a water leakage prevention measure, an air conditioning case that accommodates equipment such as a cooling heat exchanger is divided into two upper cases and one lower case, whereby 1 A configuration is known in which a condensate tray is formed by only one lower case. According to this configuration, since there is no case dividing surface that causes water leakage in the condensate tray, water leakage from the lower case can be prevented.
JP 2000-6644 A JP 2003-11655 A

  In recent years, in order to improve the comfort on the rear seat side of the vehicle interior, there is an increasing number of vehicle front and rear independent control type air conditioners that can independently control the temperature of the air blown to the rear seat side of the vehicle interior. In this type of air conditioner, in the air conditioning case, on the lee side of the cooling heat exchanger, on the lower side of the front seat ventilation path (main ventilation path), more specifically on the lower side of the heating heat exchanger. It is common to form a cool air passage for the rear seat.

  With such a configuration, when the condensed water jumps out to the leeward side of the cooling heat exchanger together with the blown air, the condensed water falls into the cool air passage for the rear seat located at the lower end portion in the air conditioning case due to the influence of gravity. Then, the condensed water passes through the rear-seat cold air passage and reaches the rear-seat blowout opening, and leaks from the duct fitting portion of the rear-seat blowout opening to the vehicle interior.

  In view of the above points, the present invention provides a vehicle air conditioner in which a cold air passage is formed at the lower end of the cooling heat exchanger on the leeward side and a blowout opening is formed on the leeward side of the cold air passage. It aims at preventing the water leak from a blowing opening part.

In order to achieve the above object, according to the first aspect of the present invention, at least the cooling heat exchanger (16) is disposed inside the air conditioning case (12) that forms a ventilation path through which air flows into the vehicle interior.
Forming a cold air passage (26) on the leeward side of the heat exchanger for cooling (16) and in a lower end portion inside the air conditioning case (12);
In the vehicle air conditioner for forming the blowout opening (38) on the leeward side of the cold air passage (26),
The air conditioning case (12) is divided into two upper cases (12a, 12b) and one lower case (12c),
The lower case (12c) forms a tray (19) for the condensed water generated in the cooling heat exchanger (16) and forms a lower surface of the cold air passage (26),
Further, in the lower case (12c), a concave water reservoir (40 ) protruding downward is formed on the lower surface of the cold air passage (26) ,
The bottom part of the water storage part (40) is characterized in that the central part in the vehicle left-right direction is high and the left and right side parts in the vehicle left-right direction are low .

According to this, since the condensate tray part (19) and the water storage part (40 ) are formed by the lower case (12c), the case dividing surface that causes water leakage in the lower case (12c) Does not exist. Therefore, it is possible to prevent water leakage from the lower case (12c) itself.

  Moreover, by dividing the upper case into two cases (12a, 12b), a device such as a door can be easily assembled inside the upper case.

Further, in the lower case (12c), a concave water storage part (40 ) protruding downward is formed on the lower surface part of the cold air passage (26), so that condensed water generated in the cooling heat exchanger (16) is generated. Even if it flows into the cold air passage (26), the condensed water can be stored in the water storage section (40 ) . Thereby, it is possible to prevent the condensed water flowing into the cold air passage (26) from leaking into the vehicle compartment from the fitting connection portion of the outlet opening (38).
Moreover, according to the first aspect of the present invention, the bottom portion of the water storage section (40) has a shape in which the central portion in the vehicle left-right direction is high and the left and right side portions in the vehicle left-right direction are low. The amount of water stored in (40) is greater at the left and right sides than at the center in the vehicle left-right direction. For this reason, even if the condensate in the water reservoir (40) moves to one side in the left-right direction of the vehicle due to the centrifugal force associated with the vehicle leaning in the left-right direction or traveling sharply, the movement of the condensate is prevented. (40) can be absorbed by the left and right sides where the amount of stored water is large.

In the second aspect of the invention, in the vehicle air conditioner of the first aspect, specifically, the lower case (12c) protrudes upward to the leeward side of the cooling heat exchanger (16). A partition wall (20) that partitions the leeward side end of the tray portion (19) is formed, and the water storage section (40 ) is formed on the leeward side of the partition wall (20).

According to this, the condensate passing through the partition wall (20) and flowing into the cold air passage (26) is stored in the water storage section (40 ) , and water leakage into the vehicle compartment can be prevented.

As in the third aspect of the present invention, in the vehicle air conditioner according to the first or second aspect, the water storage section (40 ) is specifically formed in the cold air passage (26 on the lower surface portion of the cold air passage (26). ) In the direction orthogonal to the air flow.

  Thereby, the condensed water which flows in into a cold wind channel | path (26) can be reliably stored in a water storage part (40, 41).

Moreover, in the vehicle air conditioner according to any one of claims 1 to 3, as in the invention according to claim 4, the water storage section (40) and the water storage section (40) are arranged in the air flow direction of the cold air passage (26). A plurality of water storage units each including a water storage unit (41) different from the water storage unit (40) may be formed.

More specifically, in the invention according to claim 5, in the vehicle air conditioner according to claim 4, the water storage section (40) is an upwind water storage section (40), and the separate water storage section. (41) is the leeward water storage section (41),
The amount of water stored in the leeward water storage section (40) is made larger than the amount of water stored in the leeward water storage section (41).

  According to this, the main water storage function can be exhibited in the windward water storage section (40), and the complementary water storage function for the windward water storage section (40) can be exhibited in the leeward water storage section (41). Therefore, during normal operation, the condensed water in the cold air passage (26) is stored only by the wind-side water storage section (40), and even under special conditions where the condensed water flows out from the wind-side water storage section (40), By storing condensed water in the leeward water storage section (41), water leakage from the fitting connection section of the blowout opening section (38) can be prevented.

In the vehicle air conditioner according to any one of claims 1 to 5, as in the invention described in claim 6 , the water absorbing material (42) is arranged in the water storage section (40, 41). May be. According to this, since the condensed water outflow to the outside of the water storage section (40, 41) can be suppressed by the water retention action of the water absorbing material (42), the amount of water stored in the water storage section (40, 41) can be substantially increased.

According to a seventh aspect of the present invention, in the vehicle air conditioner according to any one of the first to sixth aspects, specifically, the cold air passage (26) is formed to extend in the vehicle front-rear direction. In the air conditioning case (12), a main ventilation passage (25) for air conditioning in the front seat side of the passenger compartment is formed above the cold air passage (26), and the cold air passage (26) and the blowout opening (38) It is formed for air conditioning in the rear seat side of the vehicle interior.

  In addition, the code | symbol in the bracket | parenthesis of each said means and each means of a claim shows the correspondence with the specific means as described in embodiment mentioned later.

(First embodiment)
FIG. 1 is a front view of an indoor air conditioning unit of a vehicle air conditioner according to the first embodiment as viewed from the front side of the vehicle, and FIG. 2 is a cross-sectional view taken along line AA in FIG.

  The indoor air-conditioning unit part of this embodiment is divided roughly into the air-conditioning main body unit 10 which incorporates the below-mentioned heat exchanger, and the air blower unit 11. The air conditioning main unit 10 is disposed at a substantially central portion inside the instrument panel at the front of the vehicle interior. On the other hand, the blower unit 11 is disposed on the front side of the passenger seat among the inside of the instrument panel at the front of the vehicle interior.

  In addition, this embodiment has shown the case where it applies to a right-hand drive vehicle, Therefore, the air blower unit 11 is arrange | positioned on the left side of the air-conditioning main body unit 10 inside an instrument panel. The up / down, left / right, and front / rear arrows in FIGS. Here, the vehicle left-right direction indicates the left-right direction with respect to the vehicle traveling direction.

  The air conditioning main unit 10 has a case 12 made of a molded product of resin such as polypropylene having excellent mechanical strength. Inside the case 12 is formed a ventilation path through which air flows toward the vehicle interior.

  In addition, the case 12 is specifically comprised by upper case 12a, 12b divided | segmented into right and left, and one case 12c of the lower side. Here, a thick solid line 12d in FIG. 1 is a divided surface of the left and right upper cases 12a and 12b, and a thick solid line 12e in FIG. 1 is a divided surface of the upper cases 12a and 12b and the lower case 12c.

  Thus, the reason why the case 12 is divided into three is because the case dividing surface that causes water leakage is not provided in the lower case 12c. Secondly, the purpose is to allow a device such as a door, which will be described later, to be easily assembled into the upper case.

  The three divided cases 12a, 12b, and 12c are fitted with each divided surface after housing the devices such as heat exchangers and doors, which will be described later, in the internal space, and the fitting portions are screwed, metal spring clips The case 12 is configured by fastening integrally using fastening means such as. Note that a thick solid line 12f in FIG. 1 is a dividing surface between the case 12 of the air conditioning main unit 10 and the blower unit 11.

  The blower unit 11 has an inside / outside air switching box 13 for switching between the inside air (vehicle compartment air) and the outside air (vehicle compartment outside air) at the upper part thereof, and the blower 14 is arranged below the inside / outside air switching box 13. .

  The blower 14 has a centrifugal blower fan (not shown) disposed in the scroll casing 14a, and the centrifugal blower fan is rotationally driven by a motor 14b. The blower 14 blows air sucked from the inside / outside air switching box 13 toward the inlet duct portion 12g of the case 12 from the left side of the vehicle toward the right side of the vehicle as indicated by an arrow a.

  As shown in FIG. 2, an air inlet space 15 is formed in the forefront portion of the vehicle in the front-rear direction inside the case 12, and air blown from the blower 14 flows into the air inlet space 15 through the inlet duct portion 12g. The air that has flowed into the case 12 flows from the foremost air inlet space 15 through the ventilation path inside the case 12 toward the vehicle rear side.

  In FIG. 2, 12e-1 is a vehicle front side dividing surface between the upper cases 12a, 12b and the lower case 12c, and 12e-2 is a vehicle between the upper cases 12a, 12b and the lower case 12c. It is a rear side dividing surface.

  Inside the case 12, an evaporator 16 serving as a cooling heat exchanger for cooling the blown air is vertically arranged in the vehicle rear portion of the air inlet space 15. The evaporator 16 is connected to an outlet side of a decompression device (not shown) of the air-conditioning refrigeration cycle device, and cools the blown air by evaporating the low-temperature and low-pressure refrigerant by absorbing heat from the blown air.

  The evaporator 16 has tank portions 16a and 16b arranged at both upper and lower ends thereof, and a heat exchange core portion 16c is formed between the upper and lower tank portions 16a and 16b. The heat exchange core portion 16c is formed by alternately laminating and joining flat tubes (not shown) through which refrigerant flows and corrugated fins (not shown) that expand the air-side heat transfer area. The air passes through the gap between the tube and the corrugated fin.

  The upper and lower ends of the tube of the heat exchange core portion 16c communicate with the upper and lower tank portions 16a and 16b. In addition, the vertical arrangement | positioning of the evaporator 16 is arrange | positioning so that the air inflow and outflow surface of the heat exchange core part 16c may extend in an up-down direction.

  Both the upper and lower tank portions 16a and 16b of the evaporator 16 are assembled to the inner wall surfaces of the upper case 12a and 12b and the lower case 12c via packing materials 17 and 18 for heat insulation and cushioning. In the lower case 12c, a condensate tray 19 is formed on the leeward side of the lower tank 16b of the evaporator 16.

  FIG. 3 is a plan view of the lower case 12c alone. 4 to 10 are sectional views taken along lines AA to GG in FIG. A partition wall 20 is formed so as to protrude upward from the bottom wall of the lower case 12c at a leeward side portion by a predetermined distance from the lower tank portion 16b of the evaporator 16. The partition wall 20 is formed integrally with the lower case 12c, and is formed over the entire area between the left and right side walls 12c-1 and 12c-2 extending in the vehicle front-rear direction of the lower case 12c as shown in FIG. Is done. As shown in FIG. 2, the partition wall 20 is formed so as to have a predetermined height similar to that of the upper end portion of the lower tank portion 16 b, and partitions the leeward side end portion of the condensed water tray portion 19.

  Further, in the lower case 12c, an upwind guide projection 21 and a leeward guide projection 22 that guide the tank assembly position are integrally formed on the front and rear sides of the lower tank portion 16b of the evaporator 16 (see FIG. 2, see FIG. In this example, the windward guide protrusion 21 is divided into four parts in the vehicle left-right direction as shown in FIG. 3, and the leeward guide protrusion 22 is formed of left and right side walls 12c-1, 12c. -2 is divided into two portions on the left and right sides.

  The condensate tray 19 has an inclined surface that gradually decreases from the right side to the left side of the vehicle, and the portion of the tray 19 that is close to the left side wall 12c-2 (A-A cross section) is the lowest. Parts. A drainage pipe 23 (FIGS. 3 and 1) is opened at the lowest part of the tray part 19. The drain pipe 23 is integrally formed with the lower case 12c so as to protrude downward from the lower case 12c. A drainage hose (not shown) is connected to the drainage pipe 23, and the condensed water is drained out of the passenger compartment by the drainage hose.

  As shown in FIG. 2, a heater core 24 serving as a heat exchanger for heating that heats the air in the case 12 is disposed on the leeward side (rear side of the vehicle) of the evaporator 16 in the case 12. The heater core 24 heats the air (cold air) after passing through the evaporator 16 by using warm water (engine cooling water) of the vehicle engine as a heat source.

  The heater core 24 has tank portions 24a and 24b disposed at both upper and lower ends thereof, and a heat exchange core portion 24c is formed between the upper and lower tank portions 24a and 24b. The heat exchange core portion 24c is formed by alternately laminating and joining flat tubes (not shown) through which hot water flows and corrugated fins (not shown) that expand the air-side heat transfer area. The air passes through the gap between the tube and the corrugated fin. The upper and lower end portions of the tube of the heat exchange core portion 24c communicate with the upper and lower tank portions 24a and 24b.

  A front-seat main ventilation path 25 is formed above the leeward ventilation path of the evaporator 16, and a rear-seat cold ventilation path 26 is formed below the front-seat main ventilation path 25. The cool air passage 26 for the rear seat passes through the lower side of the heater core 24 and extends the lower end portion inside the case 12 to the vehicle rear side.

  The main air passage 25 for the front seat is branched into a cold air passage 27 for the front seat and an inlet air passage 28 of the heater core 24. The front seat air mix door 29 is configured by a rotatable plate door disposed between the evaporator 16 and the heater core 24. The front-seat air mix door 29 passes through the front-seat cold air passage 27 and the inlet air passage 28 of the heater core 24, that is, the cold air passing through the front-seat cold air passage 27 and the inlet air passage 28. The air volume ratio with the warm air heated by the heater core 24 is adjusted to adjust the blowout temperature of the conditioned air blown to the front seat side region in the passenger compartment.

  A front-seat warm air passage 30 extending upward is formed on the air blowing side (vehicle rear side) of the heater core 24. The front-seat warm air passage 30 is formed so as to bend toward the front side of the vehicle through the upper portion of the heater core 24, and merges with the front-seat cold air passage 27. The cool air and warm air on the front seat side are mixed in the vicinity of the junction between the cold air passage 27 for the front seat and the warm air passage 30 for the front seat, and the conditioned air on the front seat side can be adjusted to a desired temperature.

  The conditioned air on the front seat side adjusted in temperature in this way passes through one or more of the face opening portion 31 on the front seat side, the foot opening portion 32 on the front seat side, and the defroster opening portion 33. It blows out to the side area or the vehicle front window glass side. These blowout openings 31 to 33 are opened and closed by two rotatable blowout mode doors 34 and 35.

  On the other hand, a hot air outlet 36 for the rear seat opens at the lower part of the heater core 24 on the air blowing side. The warm air outlet 30 for the rear seat allows a part of the warm air passage 30 for the front seat to flow downward from the heater core 24.

  The rear seat air mix door 37 is configured by a rotatable plate door disposed on the rear side of the lower tank portion 24 b of the heater core 24. The rear-seat air mix door 37 has an opening ratio between the rear-seat cold air passage 26 and the rear-seat hot air outlet 36, that is, the cold air passing through the rear-seat cold-air passage 26 and the rear-seat hot air outlet. The air volume ratio with the warm air passing through 36 is adjusted to adjust the temperature of the conditioned air blown out to the rear seat area in the vehicle interior.

  The cool air passing through the rear-seat cool air passage 26 and the warm air passing through the rear-seat warm air outlet 36 are mixed on the leeward side of the rear-seat air mix door 37 to bring the rear-seat-side conditioned air to a desired temperature. Can be adjusted. Of the upper cases 12a and 12b, the rear seat outlet opening 38 is formed at the lowermost rearmost portion.

  The rear-seat blowout opening 38 is more specifically divided into a rear-seat-side face opening (not shown) and a rear-seat-side foot opening (not shown) in the vehicle left-right direction. The rear seat face duct and the rear seat foot duct are connected to the rear seat face opening and the rear foot opening, respectively.

  Air-conditioned air (mainly cold air) is blown out from the rear seat face outlet (not shown) provided at the front end of the rear seat face duct to the upper body side of the rear seat passenger. Similarly, conditioned air (mainly hot air) is blown out from the rear seat foot outlet (not shown) provided at the front end of the rear seat foot duct to the feet of the rear seat passengers.

  By the way, the lower case 12c forms a lower surface portion of the cool air passage 26 for the rear seat as shown in FIG. 2, and a concave shape protruding downward from the lower surface portion of the cool air passage 26 for the rear seat in the lower case 12c. Water reservoirs 40 and 41 are formed.

  Here, the water storage units 40 and 41 are formed at a plurality of locations in the air flow direction of the rear-seat cool air passage 26, and the wind-side water storage unit 40 is formed at a site immediately after the partition wall 20. . On the other hand, the leeward water reservoir 41 is formed near the outlet of the cool air passage 26 for the rear seat. The leeward water storage section 41 is formed at a position lower by a predetermined amount than the leeward water storage section 40.

  In addition, water storage portions 40 and 41 are formed in the entire area in the direction (vehicle left-right direction) orthogonal to the air flow in the cold air passage 26 on the lower surface portion of the lower case 12c (the lower surface portion of the cool air passage 26 for the rear seat). That is, the water reservoirs 40 and 41 are formed over the entire length between the left and right side walls 12-1 and 12-2 that define the left and right sides of the cool air passage 26 for the rear seat (see the hatched portion in FIG. 3).

  The water storage unit 40 on the windward side is designed to have a water storage amount (water storage volume) that is several times larger than that of the water storage unit 41 on the leeward side. Therefore, the water storage unit 40 on the windward side exhibits the main water storage function, and The water storage part 41 exhibits a complementary water storage function for the windward water storage part 40.

  In addition, the total water storage amount of both the water storage units 40 and 41 is obtained by testing the maximum amount of water flying from the evaporator 16 to the cool air passage 26 for the rear seat, and is a sufficiently large amount of water storage with respect to this maximum amount of water. To design.

  Furthermore, as shown in FIG. 10, the bottom part of the wind-side water storage part 40 is formed in a cross-sectional mountain shape in which the center part in the vehicle left-right direction is high and the left and right side parts in the vehicle left-right direction are low.

  Next, the operation of the first embodiment in the above configuration will be described. First, an outline of the basic operation of this embodiment will be described. When the blower 14 of the blower unit 11 is operated, the inside air or the outside air is introduced from the inside / outside air switching box 13, and the blown air of the blower 14 flows into the front air inlet space 15 in the case 12. Thereafter, the blown air passes through the evaporator 16. Here, if the refrigeration cycle having the evaporator 16 is operated, the blown air is cooled and dehumidified by the evaporator 16.

  The air flow after passing through the evaporator 16 is determined by the operating positions (openings) of the front seat air mix door 21 and the rear seat air mix door 22. FIG. 2 shows a state where both the front seat air mix door 29 and the rear seat air mix door 37 are operated to an intermediate opening position between the maximum heating position and the maximum cooling position. Here, the maximum heating position of the air mixing door 29 for the front seat and the air mixing door 37 for the rear seat is a position where the cold air passages 27 and 26 are fully closed and the hot air side passages 28 and 36 are fully opened. On the contrary, the cooling position is a position in which the warm air passages 28 and 36 are fully closed and the cold air passages 27 and 26 are fully opened.

  By independently adjusting the opening degree of the air mixing door 29 for the front seat and the air mixing door 37 for the rear seat, the temperature of the air blown to the front seat side and the rear seat side of the vehicle interior can be adjusted independently.

  By the way, condensed water is generated on the surface of the heat exchange core portion 16c of the evaporator 16 by the cooling and dehumidifying action of the evaporator 16. The condensed water moves to the leeward side due to the wind pressure of the air flow and moves downward due to the influence of gravity. At this time, the partition wall 20 is formed to protrude upward from the condensate tray 19 of the lower case 12c at a predetermined distance on the leeward side of the lower tank portion 16b of the evaporator 16, so that the heat exchange of the evaporator 16 is performed. Condensed water jumping out from the core portion 16 c to the leeward side is received by the partition wall 20, and much of the condensed water can be dropped onto the tray portion 19.

  The condensed water falling on the tray 19 is discharged from the drain pipe 23 to the outside of the passenger compartment through a drain hose (not shown).

  During the cooling high load operation, the amount of condensed water generated is large and the air volume of the blower 14 is also large. Therefore, a part of the condensed water that jumps out from the heat exchange core portion 16c of the evaporator 16 passes above the partition wall 20. As a result, the air flows into the rear seat cool air passage 26.

  According to this embodiment, the concave water storage portions 40 and 41 protruding downward on the lower surface portion of the cool air passage 26 for the rear seat are provided at two places in the front and rear in the air flow direction, and the concave water storage portions 40 and 41 are provided for the rear seat. The cool air passage 26 is provided over the entire region in the width direction (direction perpendicular to the air flow). For this reason, even if a part of the condensed water flows into the cool air passage 26 for the rear seat at the time of cooling high load operation or the like, the inflow condensed water can be first stored in the water storage section 40 on the windward side.

  The condensate in the water storage section 40 on the windward side is increased by the influence of the vehicle body inclination due to the uphill traveling or the downhill traveling, the inertial force accompanying the sudden start of the vehicle, the centrifugal force due to the sudden turning, etc. Even if it flows out of the water storage section 40, this condensed water can be stored in the water storage section 41 on the leeward side.

  Thereby, the condensed water flowing into the cool air passage 26 for the rear seats is a fitting connection portion 12e-2 between the lower case 12c located on the leeward side of the water storage portion 41 and the left and right upper cases 12a and 12b, and the left and right upper cases. It can prevent reaching the fitting connection part of the blowing opening part 38 of 12a, 12b. Therefore, it is possible to prevent the condensed water from leaking into the vehicle compartment from these fitting connection portions and the like.

By the way, as shown in FIG. 10, the bottom portion of the wind-side water storage section 40 is formed in a mountain-shaped cross section that is high at the center in the left-right direction of the vehicle and lower at both the left and right sides in the left-right direction of the vehicle.
Therefore, even if the condensate in the water storage unit 40 on the windward side moves to one side in the vehicle left-right direction due to the centrifugal force associated with the vehicle leaning left and right or traveling sharply, the movement of the condensate is stored in the water storage unit. It can be absorbed by 40 left and right side portions (portions where the amount of stored water is large).

  In addition, since the water storage parts 40 and 41 do not have a drainage means, the condensed water in the water storage parts 40 and 41 is processed by natural evaporation.

(Second Embodiment)
FIG. 11 shows a second embodiment in which a water absorbing material 42 having a water absorbing property such as a porous resin material (sponge) and silica gel is additionally installed in the water storage portions 40 and 41.

  According to this, the condensed water can be held inside the water absorbing material 42, and the condensed water in the water absorbing material 42 can be prevented from moving out of the water storage units 40, 41 by the water holding action of the water absorbing material 42. As a result, the substantial water storage amount of the water storage units 40 and 41 can be increased.

It is a front view from the vehicle front side of the indoor unit part of the air conditioner for vehicles by a 1st embodiment of the present invention. It is XX sectional drawing of FIG. It is a top view of the lower case single-piece | unit of FIG. 1, FIG. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG. It is EE sectional drawing of FIG. It is FF sectional drawing of FIG. It is GG sectional drawing of FIG. It is a longitudinal cross-sectional view of the indoor unit part of the vehicle air conditioner by 2nd Embodiment of this invention, and is a figure corresponding to FIG.

Explanation of symbols

12 ... Air conditioning case, 12a, 12b ... Upper case, 12c ... Lower case,
16 ... Evaporator (cooling heat exchanger), 26 ... Cool air passage for the rear seat, 38 ... Outlet opening for the rear seat,
40, 41 ... Water reservoir.

Claims (7)

Arranging at least the cooling heat exchanger (16) inside the air conditioning case (12) that forms a ventilation path through which air flows toward the passenger compartment,
Forming a cold air passage (26) on the leeward side of the heat exchanger for cooling (16) and in a lower end portion inside the air conditioning case (12);
In the vehicle air conditioner for forming the blowout opening (38) on the leeward side of the cold air passage (26),
The air conditioning case (12) is divided into two upper cases (12a, 12b) and one lower case (12c),
The lower case (12c) forms a tray (19) for the condensed water generated in the cooling heat exchanger (16) and forms a lower surface of the cold air passage (26),
Further, in the lower case (12c), a concave water reservoir (40 ) protruding downward is formed on the lower surface of the cold air passage (26) ,
The vehicle air conditioner is characterized in that a bottom portion of the water storage section (40) has a shape in which a central portion in the left-right direction of the vehicle is high and both left and right side portions in the left-right direction of the vehicle are low . Of the lower case (12c), a partition wall (20) is formed which protrudes upward on the leeward side of the cooling heat exchanger (16) and divides the leeward side end of the tray part (19),
The vehicle air conditioner according to claim 1, wherein the water storage section (40 ) is formed on the leeward side of the partition wall (20). The said water storage part (40 ) is formed in the whole region of the direction orthogonal to the air flow of the said cold wind channel | path (26) in the lower surface part of the said cool wind channel | path (26). The vehicle air conditioner described. Features Before SL air flow direction of the cool air passage (26), said water reservoir (40), that a plurality of water storage portion consisting of another water storage portion (41) is formed from said water reservoir (40) The vehicle air conditioner according to any one of claims 1 to 3 . The water reservoir (40) is a windward water reservoir (40) , and the another water reservoir (41) is a leeward water reservoir (41) ,
5. The vehicle air conditioner according to claim 4 , wherein a water storage amount of the leeward side water storage unit (40) is larger than a water storage amount of the leeward side water storage unit (41). The vehicle air conditioner according to any one of claims 1 to 5 , wherein a water absorbing material (42) is disposed in the water storage section (40, 41). The cold air passage (26) is formed to extend in the vehicle longitudinal direction,
Inside the air conditioning case (12), a main ventilation path (25) for air conditioning in the passenger compartment front seat side is formed above the cold air passage (26),
The vehicle air conditioner according to any one of claims 1 to 6 , wherein the cold air passage (26) and the outlet opening (38) are formed for air conditioning in a rear seat side of the vehicle interior.

Images