KR20060069989A - Air conditioning system for a car - Google Patents

Abstract

The present invention relates to a vehicle air conditioner, and to minimize the decrease in the air flow rate for the warm air flowing through the hot air passage to the air mixing section side, while maintaining a constant without changing the upper and lower temperature difference in the cabin in the bi-level mode The purpose of the present invention is to improve the bilevel temperature characteristics, thereby providing a comfortable air conditioning effect to the interior of the vehicle.

To this end, the present invention in the longitudinal direction of the temp door 17 on the upper surface of the temp door 17 is installed between the evaporator 15 and the heater core 16 to heat-exchange the air introduced from the air inlet 11 A baffle 30 is provided to protrude to a predetermined length and height. The baffle 30 is repaired on the upper surface of the temporal door 17 at the end portion 24a of the floor door 24 when the floor door 24 is in a full open state. It is located between L1 and the waterline L2 which fell in the upper surface of the said temp door 17 at the end part 12a of the said guide wall 12. As shown in FIG.

Air Conditioners, Guide Walls, Tempdoors, Baffles, Bi-Level Modes, Temperature Differences, Comfort, Deviation

Description

Air Conditioning System for Vehicles

1 is a cross-sectional view showing a general vehicle air conditioner.

2 is a cross-sectional view showing a vehicle air conditioner according to a conventional example.

3 is a configuration diagram of a temporal door mounted on the vehicle air conditioner according to FIG. 2.

4 is a graph comparing the driver's head temperature and the measured temperature change in the bi-level mode in FIG. 3.

5 is a cross-sectional view showing a vehicle air conditioner according to the present invention.

6 is a configuration diagram of a temp door mounted on the vehicle air conditioner according to the present invention.

FIG. 7 is a cross-sectional view showing air flow in the bilevel mode mode in FIG. 5; FIG.

8 is a graph comparing the driver's head temperature and the measured temperature change in the bi-level mode in FIG. 7.

** Explanation of symbols for main parts of drawings **

10: case body 12: guide wall

13: first air passage 14: second air passage

15: evaporator 16: heater core

17: Temp Door 18: Defrost Vent                 

19: Face Vent 20, 21: Floor Vent

22: defrost door 23: face door

24: floor door 30: baffle

31: first auxiliary baffle 32: second auxiliary baffle

C: Cold air passage H: Hot air passage

M: Air mixing section

The present invention relates to an air conditioner for a vehicle, and more particularly, a face vent and a floor in a bi-level mode, while minimizing a decrease in wind volume for warm air flowing through a hot air passage to an air mixing section. It is possible to improve the temperature characteristics of the bi-level mode by maintaining a constant temperature without changing the temperature difference of the air discharged to the upper half and the lower half of the vehicle interior through the vent, and also, regardless of the specific blowing mode The present invention relates to a vehicle air conditioner capable of maximizing air conditioning effects on an interior of a vehicle by making it possible to significantly reduce the temperature deviation of air discharged from side to side.

In general, a vehicle air conditioner selectively heats the outside air introduced into a vehicle interior by a blower unit through a heat evaporator through which a refrigerant flows or a heater core through which a coolant of a vehicle engine flows. The air conditioner is configured to cool or heat the vehicle interior by distributing in various directions of the vehicle interior in a cold or warm state through a vent communicating with each part of the vehicle interior.

This air conditioning unit is a three-piece type air conditioning unit consisting of a blower unit, an evaporator unit and a heater core unit independently, and a semi-center mounting type in which an evaporator unit and a heater core unit are integrally formed in one case. Mounting Type) An air conditioning apparatus and a center mounting type air conditioning apparatus in which all three units are integrally formed in one case may be classified.

1 is a sectional view of a general semi-center mounting type air conditioner as an example.

As shown in Figure 1, the general air conditioner, from the lower surface to flow out the air introduced by the blower unit (not shown) from the air inlet 101 formed on the inlet side of the case body 100 to the outlet side, It is partitioned into the 1st air flow path 113 and the 2nd air flow path 114 by the guide wall 102 extended to the upper surface side.

An evaporator 105 and a heater core 106 are provided on an upstream side and a downstream side of the first air passage 103, respectively, and are cooled by the evaporator 105 on the first air passage 103. Cold air passage (C) for passing the compressed air and hot air passage (H) for passing the air heated by the heater core (106) are formed, respectively, between the evaporator (105) and the heater core (106), Temporary doors (Temp Door, 107) for adjusting the amount of air selectively passing through the cold air passage (C) and the hot air passage (H) is provided rotatably.                         

On the other hand, at the outlet side of the case body 100, the defrost vent (108) for removing the frost of the vehicle glass by discharging the air supplied according to the opening degree of the temporal door 107 toward the front windshield of the vehicle (Defrost Vent, 108) Face vents (109) for discharging air to the upper half of the vehicle interior and floor vents (110, 111) for discharging air to the lower half of the vehicle interior are installed, respectively, and the temp door ( The defrost door which is a mode door for selectively discharging the amount of cold / warm flowed according to the opening degree of the door 107 to be discharged into the cabin through the vents 108, 109, 110, and 111. 108, face door 109, and floor door 110 are provided, respectively.

Here, the floor vent 110 is located upstream of the second air passage 104 and is a front floor vent for discharging air toward the front seat floor of the vehicle interior, and the floor vent 111 is the second air passage 104. It is located on the downstream side of the rear floor vent for air discharge to the rear seat floor of the vehicle interior.

According to the configuration of such an air conditioning apparatus, in the maximum cooling mode, as shown by the solid line in FIG. 1, the temporal door 107 is rotated downward to block the hot air passage H in front of the heater core 106. At the same time, by opening the cold air passage C bypassing the heater core 106, the air introduced by the blower unit from the air inlet 101 is cooled while passing through the evaporator 105, and then the defrost vent 108 The face vents 109 and the floor vents 110 and 111 are supplied into the vehicle interior to cool the interior of the vehicle interior. In the maximum heating mode, as shown by a dotted line in FIG. 1, the temporal door 107 is rotated upward to open the hot air passage H in front of the heater core 106, thereby allowing the blower unit to open. The introduced air passes through the lower portion of the heater core 106 and is supplied into the vehicle interior through the vents 108, 109, 110, and 111 to heat the interior of the vehicle interior.

Further, such a general air conditioner performs a blowing mode for selectively discharging cold / warm air through the vents 108, 109, 110, and 111 according to the opening degree of the temporal door 107 as follows.

First, in the face mode, the face vent 109 is opened by the rotation of the face door 113, and the defrost vent 108 is rotated by the defrost door 112 and the floor door 114. And floor vents 110 and 111 are closed, so that cool / warm air is discharged into the vehicle interior only through the face vent 109.

In the defrost mode, the defrost vent 108 is opened by the rotation of the defrost door 112, and the face vent 109 is rotated by the face door 113 and the floor door 114. ) And the floor vents 110 and 111 are closed, so that cold / warm air is discharged into the vehicle interior only through the defrost vent 108. Similarly, in the floor mode, the floor vents 110 and 111 are opened, and cold / warm air is discharged into the vehicle interior through the opened floor vents 110 and 111.

In the bi-level mode, the part of the face vent 109 and the part of the second air passage 104 communicating with the floor vents 110 and 111 are opened while the cold / warm air is opened. The liquid is discharged into the vehicle through the face vents 109 and the floor vents 110 and 111. In the mixed mode, a part of the defrost vent 108 and the floor vents 110 and 111 are provided. A portion of the second air flow passage 104 communicating with the air is opened and the cold / warm air is discharged in a state that is divided into the interior of the vehicle through the opened defrost vent 108 and the floor vents 110 and 111.

In such an air conditioning apparatus, the doors 107, 112, 113, 114 and the guide wall 102 are essential components for controlling or guiding the flow of air introduced from the air inlet 111. Depending on the location, airflow may be impeded to reduce air conditioning performance.

For example, in most air conditioners as illustrated in FIG. 1, the ends of the guide walls 102 protrude and extend toward the air mixing section M in order to maximize the mixing properties of the cold and warm air. Specifically, the end portion of the guide wall 102 is bent toward the air mixing section M located at approximately 2/3 of the cold air passage C when the extension line of the guide wall 102 is drawn toward the temporal door side. .

Accordingly, the warm air flowing out through the hot air passage (H) hits the end of the guide wall 102, which is bent toward the air mixing section (M), causing airflow resistance, resulting in a loss of air volume. As a result, in the bi-level mode in which an appropriate amount of cold air is discharged to the face vent 109 side and an appropriate amount of warm air is discharged to the floor vents 110 and 111 side to keep the temperature difference between the upper and lower sides in the car room open properly. Since the amount of warmth discharged to the (110, 111) is bound to be relatively small, there is a problem that the amount of warm air is reduced and the fluctuation of the upper and lower temperatures in the interior of the vehicle is not kept constant and greatly fluctuates.                         

Further, in the bi-level mode, the temperature characteristics of the bi-level because the warm air passing through the hot air passage by the opening degree of the temper door 107 can only be mixed with the cold air passing through the cold air passage in the air mixing section (M). There was also the problem of lowering

On the other hand, Figure 2 shows a vehicle air conditioner according to a conventional example, schematically showing the air flow state in the bi-level mode.

In the vehicle air conditioner according to the conventional example, similar to the air conditioner shown in FIG. 1, the temp door 203 is installed between the evaporator 201 and the heater core 202 sequentially installed inside the case body 200. And the mode doors 209, 210, and 211 for selectively discharging cold / warm air to the vents 205, 206, 207, and 208 according to the opening degree of the temp door 203. It is.

However, the temp door may be guided to the floor vents 207 and 208 so that the warm air flowing through the hot air passage H on the downstream side of the heater core and flows straight to the air mixing section M is properly guided to the floor vents 207 and 208. The upper surface of 203 is provided with a baffle 204. As illustrated in FIG. 3, the baffle 204 is formed to protrude to a predetermined height in parallel with the rotation shaft 203a at the upper end of the tempor 203.

In the conventional vehicle air conditioner, in the bi-level mode, the warm air flowing through the hot air passage (H) and flows straight toward the air mixing section (M) hits the baffle (204) and turns to the floor vents (207, 208). In order to avoid mixing with the cold air passing through the cold air passage C, the temperature difference of the air fluctuating between the upper half and the lower half in the vehicle compartment can be adjusted appropriately.                         

However, according to the conventional vehicle air conditioner, since the baffle 204 is provided at the end of the temporal door 203, when the temporal door 203 is positioned in a specific section in the bilevel mode, the warm air passage H ) Is discharged into the face vent 206 and the remaining part to the floor vents 207 and 208 in the state where the warmth passing through the air is mixed with the cold air passing through the cold air passage C, and thus, between the upper half and the lower half of the vehicle interior. It caused a change in temperature difference.

That is, the temp door 203 is divided into eight rotation sections by an operation of an air conditioning controller switch (not shown) installed on an instrument panel in a vehicle interior. As illustrated in FIG. In the mode, when the temporal door 203 is rotated to a position where the hot air passage H is completely blocked, that is, from the maximum cooling mode position to the 4/8 section position P1 or more, the baffle 204 flows straight. Since the warmth is in a position where the direction of the warmth cannot be changed, the warmth passing through the hot air passage H is directed to the baffle 204 side, and the face vent 206 is mixed with the cold air passing through the cold air passage C. ) And floor vents 207 and 208.

Figure 4 compares the temperature change of the air discharged to each vent according to the rotation section of the temp door. In FIG. 4, 'V-LH' and 'V-RH' are air temperature change lines discharged through the left and right sides of the face vent, respectively, and 'V-LC' and 'V-RC' are the face vents, respectively. The temperature change lines, 'FF-LH' and 'FF-RH', discharged through the left center part and the right center part, respectively, the left and right sides of the front floor vent, and the 'RF-LH' and 'RF-RH', respectively. The temperature change line discharged through the left and right sides of the rear floor vent is shown. Referring to FIG. 4, when the temp door is located at the 4/8 section position P1 from the maximum cooling mode position, the interior of the vehicle is located through the floor vents 207 and 208 as compared to the 3/8 section position P0. While the temperature of the air discharged to the lower half of the temperature drops significantly, the temperature of the air discharged to the upper half of the vehicle through the face vent 206 is sharply increased, it can be seen that the difference in the upper and lower temperatures in the vehicle is narrowed significantly. It can be seen that this phenomenon is more pronounced when the temp door 203 is in the 5/8 section position P2.

For example, when the temp door 203 is in the 3/8 section position, the average temperature difference between the upper half and the lower half in the vehicle compartment is approximately 24 ° C., but when the temp door is in the 4/8 section and the 5/8 section, respectively. At approximately 12 ° C. and 7 ° C., it can be seen that the up and down temperature difference in the vehicle room varies greatly. Due to such fluctuations in temperature difference, there is a problem that cannot provide a thermally comfortable air conditioning effect to the occupant.

Moreover, in the conventional vehicle air conditioner, as described above, since the end of the guide wall 212 is directed toward the air mixing section M side, the air amount loss for the warm air flowing to the air mixing section M side can not be tolerated. Inevitably, there has been a problem in that an increase in the amount of warm air discharged to the floor vents 207 and 208 cannot be expected.

Accordingly, the present invention has been made in order to solve the above-mentioned problems, while minimizing a decrease in the amount of air flow to the warm air flowing through the hot air passage toward the air mixing section, in the bi-level mode, Through the face vent and the floor vent, the temperature difference of the air discharged to the upper half and the lower half of the vehicle interior can be kept constant without changing the temperature characteristics of the bi-level mode, and also related to the specific blowing mode. It is an object of the present invention to provide a vehicle air conditioner that can maximize the air conditioning effect on the interior of the vehicle by significantly reducing the temperature deviation of the air discharged to the left and right of the vehicle interior.

In order to achieve the above object, the present invention provides an air inlet formed at the inlet end, a defrost vent, a face vent and a floor vent formed at the outlet end, respectively, and are connected to the defrost vent and the face vent from the air inlet. A case having a guide wall extending from the lower surface to the upper surface to define a first air passage and a second air passage extending from the air inlet and connected to the floor vent;

A defrost door, a face door, and a floor door for adjusting the opening degree of each vent;

An evaporator and a heater core installed in the case and exchanging heat with air;

In the air conditioning apparatus for a vehicle provided between the evaporator and the heater core, the cold air passage bypassing the heater core and a temporal door for adjusting the opening degree of the hot air passage in front of the heater core,

On the upper surface of the temporal door, a baffle for guiding the warmth that has passed through the warm air passage to the floor vent side is provided at a predetermined length and height in the longitudinal direction of the temporal door in the bilevel mode.

The baffle may include the water line L1 lowered from the end of the floor door to the upper surface of the temporal door when the floor door is in a full open state, and at the end of the guide wall. Characterized in that located between the water line L2 lowered on the upper surface of the temp door.

Moreover, in this invention, the height of the said baffle is 10 mm-20 mm, It is characterized by the above-mentioned.

Further, in the present invention, both side portions of the baffle are provided with first and second auxiliary baffles extending from the both side portions at predetermined heights inclined in the rotation axis direction of the temporal door.

Further, in the present invention, the end of the guide wall, characterized in that toward the one end of the defrost vent.

In addition, in the present invention, the tempored door is a flat structure, the defrost door, the face door, and the floor door is characterized in that the butterfly (Butterfly) structure.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

5 is a cross-sectional view showing the vehicle air conditioner according to the present invention, Figure 6 is a view showing the structure of the baffle installed in the temp door in Figure 5, Figure 7 is the air in the bi-level mode mode in Figure 5 It is sectional drawing which shows a flow.

As shown in FIG. 5, the vehicle air conditioner according to the present invention has an air inlet 11 at an inlet side, and is partitioned by a guide wall 12 to be described later connected to the air inlet 11 at an outlet side. And a defrost vent 18 and a face vent 19 connected to the first air passage 13 among the second air passages 13 and 14, and connected to the second air passage 14. A case body 10 having floor vents 20 and 21, a blower unit (not shown) provided at the air inlet 11, and air installed in the vicinity of the blower unit to cool air blown by the blower unit; Or an evaporator 15 and a heater core 16 for heating or heating, and a temporal door 17 rotatably provided between the evaporator 15 and the heater core 16.

The temporal door 17 has a flat plate-like structure, and is formed to be rotatable upward and downward about a rotation shaft 17a formed at an upper end thereof. That is, the tempor 17 has a cold air passage C through which the air passing through the evaporator 15 from the air inlet 11 bypasses the heater core 16 and the warm air passing through the heater core 16. The passage H is selectively opened and closed.

The defrost vent 18, the face vent 19, and the floor vents 20, 21 are selectively provided with the vents according to the respective blowing modes such as the defrost mode, the face mode, the floor mode, and the like in the air-conditioning mode. Defrost doors 22, face doors 23 and floor doors 24 for opening and closing the 18, 19, 20 and 21 are rotatably provided, respectively. The defrost door 22, the face door 23 and the floor door 24 have a conventional butterfly structure in order to minimize aeration resistance during air flow to the vents 18, 19, and 20. It is. Here, the floor vent 20 is a front floor vent, and the floor vent 21 is a rear floor vent.

Further, the first air passage 13 and the second air passage 14 are guide walls extending from the lower end of the case body 10 toward the defrost vent 18 and the face vent 19. The floor door 24, which is partitioned off by 12) and which selectively opens and closes the second air passage 14 communicating with the floor vents 20 and 21, is provided at the end side thereof.

The end of the guide wall 12, the air introduced from the air inlet 11 through each of the vents 18, through the cold air passage (C) or the hot air passage (H) in accordance with the optional opening degree of the temper door (17) 19, 20, 21, one end 18a of the defrost vent 18 without bending to the air mixing section (M) side where the cold and warm air is mixed in order to minimize the resistance to the flowing air To the side).

The reason is that, as described above, when the end of the guide wall 12 is located toward the center of the air mixing section M for mixing cold and warm air, it is possible to maximize the mixing properties of the cold and warm air, This is because the warmth flowing through the passage H hits the end of the guide wall 12, and together with the vortex phenomenon, the airflow resistance is increased to cause a loss of air volume.

Thus, in the present invention, in the bi-level mode, in order to keep the temperature difference between the air in the upper half and the lower half in the vehicle compartment constant, the end of the guide wall 12 is formed at the central side of the air mixing section M as described above. By extending the section so as to be located on the side away, the warm air flowing through the hot air passage (H) does not collide with the end of the guide wall 12 significantly, and thus toward the air mixing section (M) side It is designed to flow out smoothly while minimizing airflow loss.                     

In particular, in the present invention, it is possible to separate the hot air flowing through the hot air passage (H) to the air mixing section (M) and the cold air flowing through the cold air passage (C), as compared to the amount of cold air In order to ensure a relatively large amount of warmth, and to efficiently guide the warmth to the floor vents 20 and 21, the temperature characteristics of the bilevel mode can be dramatically improved, as shown in FIG. As described above, a baffle 30 protruding at a predetermined height is formed on the upper surface of the temporal door 17.

The baffle 30 is formed at a substantially central portion of the upper surface of the temporal door 17 by a predetermined length in the longitudinal direction of the temporal door 17. If the height of the baffle 30 is too high, the airflow resistance can be increased to cause a loss of air volume. If the height of the baffle 30 is too low, the airflow cannot be sufficiently guided. It is good. Preferably, the height of the said baffle 30 is preferable in the range of about 10 mm-20 mm, Most preferably, it is about 15 mm.

Furthermore, as shown in FIG. 5, the baffle 30 has an end portion 24a and the guide wall of the floor door 24 in a state in which the floor door 24 is full open. It is preferably located between the ends 12a of (12). That is, the waterline which fell on the upper surface of the temporal door 17 at the end of the floor door 24 is L1, and the waterline which fell on the upper surface of the temporal door 17 at the end 12a of the guide wall 19. In the case of L2, the baffle 30 may be formed on the upper surface of the temp door 17 located within the range between the waterline L1 and the waterline L2.

As described above, in the present invention, the end 12a of the guide wall 12 is positioned to face one end 18a of the defrost vent 18 without being bent toward the center of the air mixing section M. In addition, by forming the baffle 30 vertically in the substantially middle portion of the tempored door 17, in the bi-level mode, as shown in Figure 7, the flow through the hot air passage (H) toward the air mixing section (M) side Since the warm air can be smoothly discharged to the second air flow passage 14 communicating with the floor vents 20 and 21 without losing the air volume, the temperature difference between the upper half and the lower half of the vehicle interior does not fluctuate as before. As a result, comfort in the vehicle interior can be improved.

On the other hand, in the present invention, as shown in Fig. 6 (b), the both sides of the baffle 30, respectively, at a predetermined height inclined at a predetermined angle in the direction of the rotation axis of the temper door 17 from both sides thereof. Extending first and second auxiliary baffles 31 and 32 may be provided. When the warm air passing through the hot air passage (H) flows to the baffle (30) side, the warmth that is concentrated on one side is distributed to the left and right sides, so that even on the left and right sides (for example, the driver's seat side and the passenger seat side) in the cabin, It is for adjusting to discharge the air volume.

Therefore, according to the present invention, the first and second auxiliary baffles 31 and 32 together with the baffle 30 can appropriately compensate for the temperature deviation between the left and right sides while maintaining the temperature difference between the upper and lower sides in the cabin. Therefore, the air conditioning effect can be maximized. These first and second auxiliary baffles also operate in any blowing mode other than the bilevel mode described above.

FIG. 8 shows the temperature change in the cabin according to the position change of the baffle of the temporal door and the temporal door as described above. 8, 'V-LH', 'V-RH', 'V-LC', 'V-RC', 'FF-LH', 'FF-RH', 'RF-LH', 'RF-RH' The definition of 'is as described above.

Referring to FIGS. 7 and 8, in the bi-level mode, the average temperature difference between the upper half and the lower half of the interior of the vehicle is measured while the temporal door 17 is rotated from the maximum cooling mode position to the 3/8 section position P0. As a result, the average temperature difference is approximately 15 ° C., and the case where the temporal door 17 is rotated to the 4/8 section position P1 is almost 15 ° C. as described above, and the temp door is positioned at the 5/8 section position ( In the case of turning to P2), it is about 14 ° C, and it can be seen that there is almost no change in the temperature difference between the upper and lower parts in the cabin. As described above, the present invention can significantly improve the air-conditioning performance as the bilevel temperature characteristic is remarkably improved as compared with the conventional art.

As described above, according to the present invention, the end portion of the guide wall partitioning the first air flow path connected to the defrost vent and the face vent and the second air flow path connected to the floor vent is not deflected to the air mixing section side. By directing it to one end of the vent, it is possible to minimize the decrease in the air flow rate for the warm air flowing through the hot air passage to the air mixing section side. Furthermore, by forming a baffle at a specific position of the temp door, the face vent and the The floor vent can be maintained constant without changing the temperature difference of the air discharged to the upper half and the lower half of the vehicle interior, thereby improving the temperature characteristics of the bi-level mode, thereby maximizing the comfortable air conditioning effect in the vehicle interior.

Further, according to the present invention, by extending the first and second auxiliary baffles that are inclined at both end portions of the baffle, the temperature of the air discharged to the left and right sides of the vehicle cabin in the bi-level mode as well as other blowing modes. Compensation for deviations can provide efficient air conditioning performance.

Although the present invention has been described with respect to the preferred embodiment, the present invention is not limited thereto, and various modifications and applications will be possible to those skilled in the art without departing from the gist of the present invention.

Claims (5)

An air inlet 11 formed at the inlet end, a defrost vent 18, a face vent 19, and a floor vent 20 and 21 formed at the outlet end, respectively; A second air passage 13 connected to the defrost vent 18 and the face vent 19 from the air inlet 11 and the air inlet 11 to the floor vents 20 and 21. A case body (10) having a guide wall (12) extending from the lower surface to the upper surface to partition the air flow passage (14); A defrost door 22, a face door 23, and a floor door 24 for adjusting the opening degree of each of the vents 18, 19, 20, and 21; An evaporator 15 and a heater core 16 installed in the case body 10 and exchanging heat with air; It is installed between the evaporator 15 and the heater core 16, and adjusts the opening degree of the cold air passage (C) bypassing the heater core 19 and the hot air passage (H) passing through the heater core 16. In the vehicle air conditioner comprising a Temp Door (17), On the upper surface of the temporal door 17, a baffle 30 for guiding the warm air that has passed through the hot air passage H to the floor vents 20 and 21 in the bi-level mode is provided. It protrudes in predetermined length and height in the longitudinal direction of the temper door 17, When the floor door 24 is in the full open state, the baffle 30 is repaired on the upper surface of the temporal door 17 at the end portion 24a of the floor door 24. A vehicle air conditioner, characterized in that it is located between L1 and the waterline L2 lowered on the upper surface of the temporal door (17) at the end (12a) of the guide wall (12). The method of claim 1, The height of the baffle 30 is 10mm to 20mm, the vehicle air conditioner. The method according to claim 1 or 2, Both side portions of the baffle 30 are provided with first and second auxiliary baffles 31 and 32 extending from the both side portions to a predetermined height inclined in the rotation axis direction of the temporal door 17, respectively. Vehicle air conditioner, characterized in that. The method of claim 1, An end portion (12a) of the guide wall (12) is directed toward one end portion (18a) of the defrost vent (18). The method of claim 1, The temporal door (17) has a flat structure, the defrost door (22), the face door (23), and the floor door 24 is a vehicle (Hutterfly type) characterized in that the butterfly (Butterfly) structure.

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