JP2005186705A - Air conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce ventilation resistance and noise while air conditioned air reaches a blowout port. <P>SOLUTION: This air conditioner is constituted by providing an air mix door 9, a hot air passage 7, a cold air passage 8 and an air mix space 10 on a downstream side of an evaporator 5 and arranging an inlet 11A of a first blowout passage leading to a vent blowout port by being located on an extension of the cold air passage 8 and an inlet 12A of a second blowout passage leading to a foot differential blowout port by being located on an extension of the hot air passage 7 side by side on a downstream side of the air mix space 10. When a blowout mode switching door 20 is controlled to a position for closing the one inlet 11A (or 12A) and opening the other inlet 12A (or 11A) on condition that the rotary type blowout mode switching door 20 having a circular arc surface 26 is provided at a branch point of the two inlets 11A and 12A and air simultaneously flows from the hot air passage 7 and the cold air passage 8, air flowing from an upstream side of the inlet 11A (or 12A) on the closing side is guided to the inlet 12A (or 11A) on an opening side on the circular arc surface 26. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle air conditioner that reduces airflow resistance until conditioned air reaches an air outlet.

  In general, an air conditioner for a vehicle has a blower fan arranged at the most upstream part of the air flow passage, an evaporator arranged downstream thereof, and the cool air after passing the evaporator is heated by a heater core downstream of the evaporator. A hot air passage that flows down as hot air, a cold air passage that directly flows the cold air after passing through the evaporator by bypassing the heater core, an air mix door that adjusts the ratio of the air volume introduced into the hot air passage and the cold air passage, and hot air An air mix space that mixes the warm air that has passed through the passage and the cold air that has passed through the cool air passage, and the hot air that has passed through the heater core and the cold air that has bypassed the heater core according to the target temperature Further, by mixing at an appropriate ratio, the air is blown out from the respective outlets toward the inside of the vehicle.

In this case, the cold air that bypasses the heater core flows relatively smoothly to the downstream passage, but the warm air that passes through the heater core flows downstream through the zigzag passage. This is the current situation (see, for example, Patent Document 1).
JP 2003-252032 A

  As described above, conventionally, wind flows relatively smoothly in the case of wind mainly composed of cold air, but in the case of wind mainly composed of warm air, the wind blows through a zigzag passage. Since it reached the exit, the ventilation resistance was large, leading to worsening of noise.

  In consideration of the above circumstances, an object of the present invention is to provide a vehicle air conditioner that can smoothly reach a blow-out passage with low airflow resistance and low airflow.

  According to the first aspect of the present invention, an evaporator is disposed in the upstream portion of the flow path of the air sent from the blower fan, and on the downstream side of the evaporator, the cold air that has passed through the evaporator is heated by the heater core and flows down as warm air. Passing through the air passage, the cool air passage through which the cool air that has passed through the evaporator flows directly down by bypassing the heater core, the air mix door that adjusts the ratio of the amount of air introduced into the hot air passage and the cool air passage, and the hot air passage. And an air mix space for mixing cold air that has passed through the cold air passage, and a vent air outlet located on the extension of the cold air passage on the downstream side of the air mix space The inlet of the first outlet passage leading to the air outlet and the inlet of the second outlet passage located on the extension of the hot air passage and leading to the foot outlet and / or the differential outlet are arranged in parallel. And a blowing mode switching door that distributes the wind from the upstream to the respective inlets at the branch point of the two inlets, and wind flows simultaneously from the hot air passage and the cold air passage to the blowing mode switching door. When the blowing mode switching door is located at the position where one inlet is closed and the other inlet is opened under certain conditions, the wind is obliquely faced to the wind flowing from the upstream side of the closed side inlet and the wind is guided to the open side inlet. A guiding surface is provided.

  A second aspect of the present invention is the vehicle air conditioner according to the first aspect, wherein the blowing mode switching door has a circular arc-shaped door member that protrudes toward the downstream side of the wind flow. The concave arcuate surface of the door member is the guiding surface.

  A third aspect of the present invention is the vehicle air conditioner according to the first aspect, wherein the blow-out mode switching door slides a film formed by arranging an inlet opening surface and an inlet closing surface, and the two of the two inlets are slid. A film-type door that opens the inlet by facing the inlet opening surface at one of the inlets and closes the inlet by facing the inlet closing surface at the other inlet. The inlet closing surface is configured to be slidable along a cross-sectionally U-shaped path in which a bending point is arranged on the boundary between the two inlets and both ends are arranged at opposite points crossing each inlet in an obliquely upstream direction. Is the guiding surface.

  According to the first aspect of the present invention, since the inlet of the first outlet passage leading to the vent outlet is disposed on the extension of the cold air passage, the outlet mode switching door is set at a position where the inlet of the first outlet passage is fully opened. (For example, at the time of full cool) Cold air flowing from the cold air passage can be introduced into the first blow-out passage in a straight flow. Therefore, the cold air can be smoothly blown out from the vent outlet with low resistance. In addition, since the inlet of the second outlet passage leading to the foot / def outlet is arranged on the extension of the hot air passage, when the outlet mode switching door is set at a position where the second outlet passage is fully opened (for example, at the time of full hot ), It is possible to introduce the warm air flowing from the warm air passage into the second blow-out passage in a straight flow rather than a winding flow. Therefore, warm air can be smoothly blown out from the foot differential outlet with low resistance.

  In addition, even during temperature control (air mixing) in which the hot air from the hot air passage and the cold air from the cold air passage are air mixed and blown out, the main wind is either cold air or hot air, It can introduce into a 1st blowing path or a 2nd blowing path by a straight flow. And the following effect can be show | played by providing the guidance surface in the blowing mode switching door.

  That is, when the blow mode switching door is set at a position close to a vent mode (a position mainly composed of cold air) in which the entrance of the first blow passage is mainly opened and the entrance of the second blow passage is closed, the second blow passage is provided. The guide surface of the blowing mode switching door that mainly closes the inlet of the airflow is inclined toward the wind from the upstream, thereby guiding the wind flowing from the warm air passage to the inlet side of the first outlet passage As a result, the hot air can be merged with the mainstream cold air with low resistance.

  Similarly, when the blow mode switching door is set at a position close to a foot differential mode (a position mainly composed of cold air) in which the entrance of the second blow passage is mainly opened and the entrance of the first blow passage is closed. The guiding surface of the blowing mode switching door that mainly closes the inlet of the blowing passage is inclined toward the wind from the upstream, thereby guiding the wind flowing from the cold air passage to the inlet side of the first blowing passage. Therefore, the cold air can be merged with the mainstream hot air with low resistance.

  As described above, in the case of wind mainly composed of cold air or wind mainly composed of warm air, the air can flow relatively smoothly in the flow path, so that the ventilation resistance is reduced and the noise is reduced. In addition, the power consumption of the blower fan motor can be reduced.

  According to the invention of claim 2, the blowing mode switching door is constituted by a rotary door having a circular arc-shaped door member convex toward the downstream side of the wind flow, and the concave circular arc surface of the door member. However, since the wind that is not the mainstream is guided, for example, when the main component is cold air, warm air is used, and when the main component is hot air, the cold air is used more smoothly. The air flow resistance can be further reduced.

  According to the invention of claim 3, the blowing mode switching door is constituted by a film type door, and the film is slidably assembled along a cross-shaped path, and wind is guided at the entrance closing surface of the film. Therefore, it is possible to switch the blowing mode while realizing a smooth wind flow without using a large-scale mode switching door.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a configuration diagram of a vehicle air conditioner according to a first embodiment, in which (a) is a plan view and (b) is a side sectional view. FIG. 2 is a diagram showing the flow of wind when in full cool and vent (VENT) mode, and FIG. 3 is a diagram showing the flow of wind when in full hot and foot differential (FOOT / DEF) mode. FIG. 4 is a diagram showing the flow of air during air mixing (temperature control), where (a) is in the vent mode, (b) is in the foot / def mode, and (c) is in the bi-level mode. It is a figure which shows the flow of a wind.

  This air conditioner includes an air conditioning case 1 in which an air flow passage 2 is formed. A blower fan 3 is disposed at the most upstream portion of the flow passage 2. The blower fan 3 is arranged with the suction port facing upward and the blower port facing sideways, and an intake duct 4 is provided in communication with the suction port.

  An evaporator 5 is disposed inside the air conditioning case 1 on the downstream side of the blower fan 3. The evaporator 5 is arranged in a forward leaning posture in which the evaporator 5 is greatly tilted in the upstream direction so that the ventilation area can be increased for the occupied height. The wind that has passed through the evaporator 5 flows obliquely upward. Immediately after the evaporator 5, a vertically rotating blade type air mix door 9 is disposed with the rotation end directed toward the evaporator 5 and the rotation fulcrum directed toward the downstream side.

  Immediately after the air mix door 9, a hot air passage 7 provided with a heater core 6 and a cold air passage 8 are provided in parallel, distinguishing between an upper stage and a lower stage. The hot air passage 7 is a passage through which the cold air after passing through the evaporator 5 is heated by the heater core 6 to flow down, and the cold air passage 8 is a passage through which the cold air after passing through the evaporator 5 is directly flowed down by bypassing the heater core 6 ( The cold air passage 8 is also called a bypass passage). The air mix door 9 functions to adjust the ratio of the amount of air introduced into the lower hot air passage 7 and the upper cold air passage 8, and can increase the air amount toward the hot air passage 7 when rotated upward. If it is turned downward, the air volume toward the cold air passage 8 can be increased.

  For example, at the time of a full cool, the cool air after passing through the evaporator 5 is all introduced into the cool air passage 8 by rotating the air mix door 9 to the lower limit as shown in FIG. Further, at the time of full hot, all the cold air after passing through the evaporator 5 is introduced into the hot air passage 7 by rotating the air mix door 9 to the upper limit as shown in FIG. Moreover, at the time of air mix, as shown to Fig.3 (a)-(c), by positioning the air mix door 9 between an upper limit and a lower limit, the cold wind after passing the evaporator 5 is made into warm air. Distribution is introduced into the passage 7 and the cold air passage 8.

  Immediately after the hot air passage 7 and the cold air passage 8, an air mix space 10 is secured for mixing the hot air that has passed through the hot air passage 7 and the cold air that has passed through the cold air passage 8. Further, on the downstream side of the air mix space 10, an inlet 11 </ b> A of the first blowing passage 11 that is positioned on the extension of the cold air passage 8 and communicates with the vent outlet, and an extension of the hot air passage 7 is positioned on the foot. An inlet 12A of the second outlet passage 12 leading to the differential outlet is arranged in an upper stage and a lower stage with a horizontal boundary wall 13 therebetween, and the branch point of these two inlets 11A and 12A is from the upstream side. A blow mode switching door 20 that distributes wind to the respective inlets 11A and 12A is provided.

  The air-conditioning case 1 has a horizontally long shape extending in the horizontal direction, and in the air-conditioning case 1 in the horizontal direction (from left to right in FIG. 1) in order, the blower fan 3, the evaporator 5, and the air A mix door 9, a hot air passage 7 provided with a heater core and a cold air passage 8 thereabove, a blow mode switching door 20, a first blow passage 11 and a second blow passage 12 are arranged, whereby the height of the entire air conditioner Is kept low.

  In this embodiment, the blowing mode switching door 20 is constituted by a rotary door having an arcuate door member 21 convex toward the downstream side of the wind flow. The two inlets 11A and 12A are set to be substantially the same size, and the rotation shaft 22 of the door member 21 is horizontally disposed on the upstream extension of the boundary wall 13 of the two inlets 11A and 12A. . The radius of the arcuate door member 21 is set to half the total height of the portion where the two inlets 11A and 12A are formed (equivalent to the height of each inlet 11A and 12A). Thereby, the door member 21 is assembled | attached so that rotation from the position which closes one inlet 11A to the position which closes the other inlet 12A is possible.

  Since the door member 21 is formed in an arcuate shape in this way, the arcuate surface 26 on the concave side of the door member 21 serves as a guide surface for guiding the wind flowing from the upstream side. That is, as shown in FIGS. 4 (a) and 4 (b), the door member 21 mainly closes one of the inlets 11A (or 12A) under the condition that wind flows simultaneously from the hot air passage 7 and the cold air passage 8. When the other inlet 12A (or 11A) is in the open position, the cold air or hot air flowing from the upstream side of the closed inlet 11A (or 12A) is smoothly opened by the arc surface 26 to the open inlet 12A (or 11A). ). In this case, as shown in FIGS. 4 (a) and 4 (b), the circular arc surface (guidance surface) 26 has an effective induction action when facing the wind flowing from the upstream obliquely on average. Demonstrate.

  Next, the flow of wind in each case will be described.

  First, at the time of a full cool, as shown in FIG. 2, the air mix door 9 fully closes the inlet of the hot air passage 7 and fully opens the inlet of the cold air passage 8. Thereby, all the cool air that has passed through the evaporator 5 flows downstream through the cool air passage 8. At this time, since the blow mode switching door 20 is controlled to the vent mode position (a position where the inlet 12A of the second blow passage 12 is fully closed), the cold air C from the cold air passage 8 is the first blow on the extension. It flows straight into the inlet 11 </ b> A of the passage 11, and blows out from the vent outlet through the first outlet passage 11 into the vehicle.

  Next, at the time of full hot, as shown in FIG. 3, the air mix door 9 fully closes the inlet of the cold air passage 8 and fully opens the inlet of the hot air passage 7. As a result, all the cool air that has passed through the evaporator 5 flows downstream through the warm air passage 7. That is, it is heated by the heater core 6 and flows into the downstream side as warm air H. At this time, since the blowing mode switching door 20 is controlled to a foot / def mode position (a position where the inlet 11A of the first blowing passage 11 is fully closed), the hot air H from the hot air passage 7 is on its extension. The air flows straight into the inlet 12 </ b> A of the second blowing passage 12, and is blown out through the second blowing passage 12 into the vehicle from the foot / difference outlet.

  Next, at the time of temperature adjustment (during air mixing) in which hot air and cold air are mixed and blown out, as shown in FIGS. 4 (a) to 4 (c), the air mix door 9 includes the inlet of the cold air passage 8 and the hot air passage 7. Open the entrance at an appropriate rate. Thereby, the cold air that has passed through the evaporator 5 is distributed and introduced into the hot air passage 7 and the cold air passage 8.

  Under this condition, as shown in FIG. 4A, when the blowing mode switching door 20 is controlled to the vent mode position, only the inlet 11A of the first blowing passage 11 is opened, so the hot air passage 7 The hot air H and the cold air C that have passed through the cold air passage 8 flow into the first blow-out passage 11 while being mixed in the air mix space 10, and are blown out from the vent air outlet into the vehicle. At this time, the main cold air C (in this mode, the air mix door 9 opens the cold air passage 8 so that the cold air becomes the mainstream), while being mixed with the hot air H, it has a substantially straight flow and low resistance. Into the first outlet passage 11. Further, the hot air H from the hot air passage 7 is guided by the arc surface 26 of the blowing mode switching door 20, and thereby smoothly merges with the mainstream cold air C.

  Further, as shown in FIG. 4B, when the blowing mode switching door 20 is controlled to the foot / diff mode position, only the inlet 12A of the second blowing passage 12 is opened. The hot air H and the cold air C that have passed through the cold air passage 8 flow into the second blow-out passage 12 while being mixed in the air mix space 10, and are blown out into the vehicle through the foot / def outlet. At this time, the main hot air H (in this mode, the air mix door 9 opens the hot air passage 7 widely, so the hot air becomes mainstream) is mixed with the cold air C, but with a substantially straight flow. It flows into the 2nd blowing path 12 with low resistance. Further, the cold air C from the cold air passage 8 is smoothly merged with the hot air H, which is the mainstream, by being guided by the arc surface 26 of the blowing mode switching door 20.

  Further, as shown in FIG. 4C, when the blow mode switching door 20 is controlled to the bi-level mode, the inlets 11A and 12A of the first and second blow passages 11 and 12 are both partially opened. Therefore, although the warm air H and the cool air C that have passed through the warm air passage 7 and the cool air passage 8 are partially mixed in the air mix space 10, they are respectively supplied to the first blow-out passage 11 and the second blow-out passage 12. Flow straight. Accordingly, the cool air C is mainly blown from the vent outlet, and the hot air H is mainly blown from the foot / def outlet.

  As described above, in the case of the wind mainly composed of the cold air C and the wind mainly composed of the warm air H, the air can be flowed relatively smoothly in the flow path, so that the ventilation resistance is reduced and low. Noise can be reduced and power consumption of the blower fan motor can be reduced. In particular, the blow mode switching door 20 is constituted by a rotary door, and the non-mainstream wind is guided to the mainstream side by the circular arc surface 26 of the door member 21. In the case where the main component is hot air, the cool air can be more smoothly merged with the main component such as cold air or hot air, and the ventilation resistance can be further reduced.

  Next, the vehicle air conditioner of 2nd Embodiment is demonstrated using FIG.

  Fig.5 (a) is a top view of the vehicle air conditioner of 2nd Embodiment, (b) is a sectional side view. In the vehicle air conditioner according to the second embodiment, the evaporator 5 is incorporated in the air conditioning case 1B with an inclination opposite to that of the first embodiment. That is, in the first embodiment, the evaporator 5 is incorporated in a forward tilted posture greatly tilted upstream, but in the second embodiment, the evaporator 5 is assembled in a rearward tilted posture greatly tilted in the downstream direction. In this case as well, the evaporator 5 is arranged in an inclined posture for the purpose of increasing the ventilation area for the occupied height. The other points are exactly the same as in the first embodiment.

  Next, the vehicle air conditioner of 3rd Embodiment is demonstrated using FIG.

  Fig.6 (a) is a sectional side view of the vehicle air conditioner of 3rd Embodiment, (b) is VIb-VIb arrow sectional drawing of Fig. (A). In the vehicle air conditioner of the third embodiment, a film type door is adopted as the blowing mode switching door 40. The blowing mode switching door 40 formed of this film type door slides a film 41 formed by arranging an inlet opening surface (a surface on which one or more ventilation openings are formed) 41A and an inlet closing surface (a surface on which no opening is formed) 41B. Then, the inlet 11A (or 12A) is opened by making the inlet opening surface 41A face one of the two inlets 11A and 12A, and the other inlet 12A (or 11A) is opened. The inlet 12A (or 11A) is closed by facing the inlet closing surface 41B.

  In the film 41 formed by arranging the inlet opening surface 41A and the inlet closing surface 41B side by side, an intermediate bending point 42 is arranged on the boundary wall 13 of the two inlets 11A and 12A, and both ends of the inlets 11A and 12A are obliquely upstream. It is assembled so as to be slidable along a cross-sectional path of the cross section disposed at the opposite points 43 and 44 across.

  That is, for example, a shaft 42M is disposed at the intermediate bending point 42, and winding means 43M, 44M are disposed at the points 43, 44 on the opposite side of the inlets 11A, 12A, for example. The intermediate portion is wound around the outer periphery of the shaft 42M while being held by the means 43M and 44M so as to be rewound. Then, by operating the winding means 43M and 44M, the film 41 can be slid along the letter-shaped path. Depending on the slide position of the film 41, either the inlet opening surface 41A or the inlet closing surface 41B can be moved. When facing one inlet 11A (or 12A), either one can face the other inlet 12A (or 11A). For this reason, the film 41 is provided with at least two inlet closing surfaces 41B on both sides in the sliding direction of the inlet opening surface 41A. Note that the film 41 may be formed by alternately arranging four surfaces, such as an inlet opening surface 41A, an inlet closing surface 41B, an inlet opening surface 41A, and an inlet closing surface 41B along the sliding direction.

  In this vehicle air conditioner, since the blowing mode switching door 40 is formed of a film type door, the opening and closing of the respective inlets 11A and 12A of the first and second blowing passages 11 and 12 are controlled according to the slide position of the film 41. be able to. In addition, since the film 41 faces obliquely with respect to the wind flow from the upstream side, the inlet closing surface 41B that closes the one inlet 11A, as shown in the illustrated example, has the cold air C from the upstream side. It serves as a guide surface 46 that guides the flow to the inlet 12A on the open side. Contrary to the illustrated example, when the lower inlet 12A is closed and the upper inlet 11A is opened, the inlet closing surface 41B closing the lower inlet 12A is provided with hot air from the upstream side. It functions as a guide surface 46 that guides the flow of H to the inlet 11A on the open side.

  In either case, since the air can flow relatively smoothly in the flow path, the ventilation resistance is reduced, noise can be reduced, and the power consumption of the blower fan motor can be reduced. In particular, in the vehicle air conditioner of this embodiment, the blowing mode switching door 40 is constituted by a film type door, and the film 41 is assembled so as to be slidable along a cross-sectionally-shaped path. Since the wind is guided, the blowing mode can be switched while realizing a smooth wind flow without using a large door.

  Next, an installation example of the air conditioner configured to suppress the height dimension as described above will be described.

  When the vehicle air conditioners of the first to third embodiments are used, the height can be suppressed, so that the places where installation is possible are expanded. For example, in the example of FIG. 7, the air conditioning unit M1 is installed in a space beside the seat 100 such as a driver's seat, and the vent duct 101 and the foot duct 102 are extended therefrom. Reference numeral 104 denotes an intake duct. In the example of FIG. 8, the air conditioning unit M2 is disposed in the lower space of the seat 100 such as the driver's seat, and the vent duct 111, the foot duct 112, and the differential duct 113 are extended therefrom. Reference numeral 114 denotes an intake duct, and 115 denotes a partition plate of the vent duct 111 and the differential duct 113.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the vehicle air conditioner of 1st Embodiment of this invention, Comprising: (a) is a top view, (b) is a sectional side view. In the same air conditioner, it is a figure which shows the flow of a wind when it is made into a vent (VENT) mode in full cool. In the air conditioner, it is a figure which shows the flow of a wind when it is set to the foot differential (FOOT * DEF) mode in full hot. In the same air conditioner, it is a figure which shows the flow of the wind at the time of air mix (at the time of temperature control), Comprising: (a) was vent mode, (b) was foot-def mode, (c) was bi-level mode, respectively. It is a figure which shows the flow of the wind of time. It is a block diagram of the vehicle air conditioner of 2nd Embodiment of this invention, Comprising: (a) is a top view, (b) is a sectional side view. It is a block diagram of the vehicle air conditioner of 3rd Embodiment of this invention, Comprising: (a) is a sectional side view, (b) is VIb-VIb arrow sectional drawing of (a). It is a perspective view which shows the example of installation of the vehicle air conditioner of embodiment of this invention. It is a perspective view which shows the other example of installation of the vehicle air conditioner of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Flow path 3 Blower fan 5 Evaporator 6 Heater core 7 Warm air path 8 Cold air path 9 Air mix door 10 Air mix space 11 1st blowing path 11A Inlet 12 Second blowing path 12A Inlet 13 Boundary wall 20 Blowing mode switching door (rotary type door)
21 Door member 26 Arc surface (guidance surface)
40 Blowing mode switching door (film door)
41 Film 41A Inlet opening surface 41B Inlet closing surface 42 Bending point 43, 44 Opposite point 46 Guide surface C Cold air H Hot air

Claims (3)

The evaporator (5) is arranged upstream of the flow path (2) of the air sent from the blower fan (3), and the cold air (C) after passing through the evaporator (5) is placed downstream of the evaporator (5) with the heater core (6 ) And a cool air passage (8) for allowing the cool air (C) after passing through the evaporator (5) to flow directly through the heater core (6). An air mix door (9) that adjusts the ratio of the amount of air introduced into the hot air passage (7) and the cold air passage (8), and hot air (H) and the cold air passage that have passed through the hot air passage (7). In the vehicle air conditioner provided with the air mix space (10) for mixing the cold air (C) that has passed (8),
On the downstream side of the air mix space (10), the inlet (11A) of the first blowing passage (11) that is located on the extension of the cold air passage (8) and communicates with the vent outlet, and the hot air passage (7 ) And the inlet (12A) of the second outlet passage (12) leading to the foot outlet and / or the differential outlet,
An air outlet mode switching door (20, 40) for distributing the wind from the upstream to each inlet (11A, 12A) is provided upstream of the two inlets (11A, 12A),
The blowing mode switching door (20, 40) is mainly connected to one of the inlets (20, 40) under the condition that wind flows simultaneously from the hot air passage (7) and the cold air passage (8). 11A or 12A) is closed and the other inlet (12A or 11A) is in the open position, it faces the wind flowing from the upstream of the closed inlet (12A or 11A) diagonally, and the wind is opened. A vehicle air conditioner provided with guide surfaces (26, 46) for guiding to (11A or 12A). The vehicle air conditioner according to claim 1,
The blowing mode switching door (20) is constituted by a rotary door having a circular arc-shaped door member (21) convex toward the downstream side of the wind flow,
The vehicular air conditioner characterized in that the concave arc surface of the door member (21) is the guiding surface (26). The vehicle air conditioner according to claim 1,
The blow-out mode switching door (40) slides a film (41) formed by arranging an inlet opening surface (41A) and an inlet closing surface (41B) so that one of the two inlets (11A, 12A) is slid. The inlet (11A or 12A) faces the inlet (11A or 12A) to open the inlet (11A or 12A), and the other inlet (12A or 11A) faces the inlet closed surface (41B). It is composed of a film type door that closes (12A or 11A),
Opposite that the film (41) has an intermediate bending point (42) on the boundary (13) of the two inlets (11A, 12A) and both ends crossing each inlet (11A, 12A) diagonally upstream It is assembled so as to be slidable along a cross-sectionally-shaped path arranged on the side points (43, 44),
The vehicle air conditioner characterized in that the inlet closing surface (41B) is the guiding surface (46).

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