KR20210093172A - Air conditioner for vehicle - Google Patents

Abstract

Disclosed is an air conditioner for a vehicle capable of simultaneously reducing a temperature difference between a center vent and a side vent in a bi-level mode as well as a vent mode. According to the present invention, the air conditioner for a vehicle comprises: an air conditioning case having a plurality of air outlets; and a heat exchanger for cooling and a heat exchanger for heating which are sequentially formed in an air flow path of the air conditioning case. The air outlet is provided with a face vent composed of a center vent and a side vent. The air conditioner for a vehicle comprises a left and right temperature difference reducing means which reduces the cross-sectional area of the flow path discharged to the center vent in a first air conditioning mode, and reduces the cross-sectional area of the flow path discharged to the side vent in a second air conditioning mode, so as to reduce a temperature difference between a center vent outlet and a side vent outlet.

Description

Air conditioner for vehicle {AIR CONDITIONER FOR VEHICLE}

The present invention relates to an air conditioner for a vehicle, and more particularly, to an air conditioner for a vehicle having a center vent for blowing air toward the center of an occupant and a side vent for blowing air toward the side.

In general, an air conditioner for a vehicle is a device that heats or cools a room by introducing external air into a room or circulating air in the room to heat or cool it. A heater core or the like is configured, and the air cooled or heated by the evaporator or the heater core is selectively blown to each part of the vehicle interior.

In particular, in order to maintain a high heating performance while securing defogging performance during heating, a two-layer air conditioner has been developed. Low-humidity cold outside air is effective to remove frost on windows during heating in winter, but it results in a lower indoor temperature.

The two-layer air conditioner effectively removes frost using fresh, low-humidity outdoor air supplied to the upper part by realizing a two-layer air flow that supplies outdoor air to the upper part of the vehicle and circulates bet air to the lower part for defogging during heating. At the same time, it provides fresh outside air to the occupants and supplies warm air to the lower part to maintain high heating performance.

1 is a cross-sectional view showing a conventional air conditioner for a two-layer flow vehicle. Referring to FIG. 1 , the conventional air conditioner for a two-layer flow vehicle includes an air conditioning case 10 , an evaporator 2 , and a heater core 3 .

An air flow path of a certain shape is formed inside the air conditioning case 10 , and a plurality of air outlets are formed at the outlet side. The air flow path is formed by separating an upper flow path 5 through which outside air flows and a lower flow path 6 through which bet air flows. The air outlet consists of a defrost vent 16 , a face vent 17 , a floor vent 18 and a console vent 19 .

Inside the air conditioning case 10, the defrost door 21 for controlling the opening degree of the defrost vent 16, the face door 22 for adjusting the opening degree of the face vent 17, and the floor vent 18 A floor door 23 for adjusting the opening degree and a console door 24 for adjusting the opening degree of the console vent 19 are provided. A blower unit is provided at the inlet side of the air conditioning case 10 .

The evaporator 2 and the heater core 3 are sequentially installed in the air flow direction at regular intervals. An electric heater 4 may be further provided downstream of the heater core 3 in the air flow direction. The air flow path of the air conditioning case 10 is divided into an upper flow path 5 and a lower flow path 6 by a partition wall 50 .

A first temp door 11 for controlling the amount of air passing through and bypassing the heater core 3 is provided in the upper flow path 5 , and the lower flow path 6 is provided with a first temp door 11 that passes through the heater core 3 . A second temp door 12 for controlling the amount of air and bypassing air is provided. The upper flow path 5 and the lower flow path 6 are configured to communicate with each other, and the floor door 23 opens and closes the communication path between the upper flow path 5 and the lower flow path 6 .

On the other hand, Figure 2 is a perspective view showing the top of the conventional air conditioning case. Referring to FIG. 2 , the face vent 17 of the conventional air conditioner for a two-story vehicle includes a center vent 17a that blows air toward the center of the occupant and a side vent 17b that blows air toward the side of the occupant. The center vent 17a is opened and closed by the center vent door 22a, and the side vent 17b is opened and closed by the side vent door 22b.

In the conventional air conditioner for a two-layer flow vehicle, there is a problem in that the temperature of the outlet of the side vent 17b is higher than that of the center vent 17a when the cold air and the hot air are mixed in the vent mode, so that the left and right temperature difference occurs. To solve this, when a baffle for reducing the amount of hot air is formed in the side vent 17b, there is a problem that the temperature of the center vent 17a is relatively increased in the bi-level mode.

In order to solve the problems of the related art, the present invention provides an air conditioner for a vehicle capable of simultaneously reducing the temperature difference between the left and right sides of the center vent and the side vent in the bi-level mode as well as the vent mode.

An air conditioner for a vehicle according to the present invention includes an air conditioning case having a plurality of air outlets, a cooling heat exchanger and a heating heat exchanger sequentially formed in an air flow path of the air conditioning case, wherein the air outlet is a center vent and a side vent In the air conditioning apparatus for a vehicle having a face vent consisting of: reducing the cross-sectional area of the flow path discharged to the center vent in the first air conditioning mode and reducing the cross-sectional area of the flow path discharged to the side vent in the second air conditioning mode, the center vent outlet and left and right temperature difference reducing means for reducing the temperature difference between the side vent outlet and the side vent outlet.

The left and right temperature difference reducing means may include: a first baffle blocking a part of the flow path of the center vent; and a second baffle blocking a portion of the flow path of the side vent.

In addition, in the vent mode, the first baffle reduces the cross-sectional area of the flow path close to the warm air flow path among the center vent outlets, and in the bi-level mode, the second baffle reduces the cross-sectional area of the flow path close to the warm air flow path among the side vent outlets.

In addition, in the vent mode, the cross-sectional area of the warm air passage of the side vent is formed to be wider than the cross-sectional area of the warm air passage of the center vent, and in the bi-level mode, the cross-sectional area of the warm air passage of the side vent is narrower than that of the warm air passage of the center vent.

The first baffle is formed upstream in the air flow direction relative to the second baffle.

A vent door for adjusting the opening degree of the face vent is provided, and the first baffle is formed to protrude from the door seating portion, which is a sealing surface of the air conditioning case, when the vent door is closed.

The first baffle has a larger protrusion length than the second baffle.

The second baffle is formed to have the same protrusion length as the door seating portion, but has a length that does not come into contact with the vent door.

A vent door for adjusting the opening degree of the face vent is provided, and in the vent mode, the vent door is rotationally controlled to open the flow path of the face vent, and in the bi-level mode, one end of the vent door is rotated to face the second baffle. .

The first baffle and the second baffle are formed to extend in the lateral direction toward the front from the inner wall of the rear end of the air conditioning case on the opposite side of the defrost vent.

The vent door includes a flat plate extending in a radial direction about a rotation axis, and the first baffle is formed at a height corresponding to the rotation axis of the vent door.

The air flow path of the air conditioning case has a two-layer structure in which an upper flow path through which outside air flows and a lower flow path through which bet air flows are separated, and the upper flow path and the lower flow path can communicate with each other, so that the air in the lower flow path rises to the upper flow path. It can be discharged through the face vent.

A vent door for controlling the opening degree of the face vent is provided, and the rotation angle of the vent door in the bi-level mode further closes the face vent flow path than the vent mode.

The first baffle and the second baffle are disposed at positions extending upward from the communication path of the upper flow path and the lower flow path.

By optimizing the positions of the first and second baffles, the air conditioner for a vehicle according to the present invention can effectively solve the problem of the temperature difference between the left and right in the bi-level mode as well as the vent mode, so that uniform and stable discharge to the occupants in various air conditioning modes It provides air conditioning of temperature and can increase the reliability of temperature control.

1 is a cross-sectional view showing a conventional air conditioning system for a two-story vehicle,
2 is a perspective view showing the top of the conventional air conditioning case,
3 is a cross-sectional view illustrating a vehicle air conditioner according to an embodiment of the present invention;
4 is a perspective view showing the upper part of the air conditioning case according to an embodiment of the present invention,
5 is a partial perspective view taken along line AA of FIG. 4;
6 is a partial perspective view taken along line BB of FIG. 4;
7 is a perspective view showing the inside of the air conditioning case according to an embodiment of the present invention from the bottom,
8 is a cross-sectional view illustrating a center vent in a vent mode of an air conditioner according to an embodiment of the present invention;
9 is a cross-sectional view illustrating a side vent in a vent mode of the air conditioner according to an embodiment of the present invention;
10 is a cross-sectional view illustrating a center vent in a bi-level mode of the air conditioner according to an embodiment of the present invention;
11 is a cross-sectional view illustrating a side vent in a bi-level mode of the air conditioner according to an embodiment of the present invention.

Hereinafter, the technical configuration of the air conditioner for a vehicle will be described in detail according to the accompanying drawings.

3 to 7 , in the air conditioner for a two-layer flow vehicle according to an embodiment of the present invention, an upper flow path 105 through which outside air is introduced and a lower flow path 106 through which bet air flows are separated to form a two-layer flow (2 Layer). ) structure. The air conditioner includes an air conditioning case 110 , a heat exchanger for cooling, and a heat exchanger for heating.

An air flow path of a certain shape is formed inside the air conditioning case 110 , an air inlet is formed at the inlet side of the air flow path, and a plurality of air outlets are formed at the outlet side. The air flow path includes an upper flow path 105 and a lower flow path 106 . The air outlet includes a defrost vent 116 , a face vent 117 , a floor vent 118 , and a console vent 119 .

Inside the air conditioning case 110, the defrost door 121 for controlling the opening degree of the defrost vent 116, the vent door 122 for adjusting the opening degree of the face vent 117, and the floor vent 118 are A floor door 123 for adjusting the opening degree and a console door 124 for adjusting the opening degree of the console vent 119 are provided. A blower unit is provided at the inlet side of the air conditioning case 110 .

A heat exchanger for cooling and a heat exchanger for heating are sequentially disposed in the air flow path of the air conditioning case 110, and exchanges heat with the air passing therethrough. The heat exchanger for cooling includes an evaporator 102 , and the heat exchanger for heating includes a heater core 103 . The heat exchanger for heating may further include an electric heater 104 downstream of the heater core 103 in the air flow direction. The evaporator 102 and the heater core 103 are sequentially installed in the air flow direction at regular intervals.

The air flow path of the air conditioning case 110 is divided into an upper flow path 105 and a lower flow path 106 by a partition wall 150 . The bet air introduced into the bet inlet flows into the lower flow path 106 , and the outside air introduced into the outdoor air inlet flows into the upper flow path 105 . The partition wall 150 is formed extending upstream of the evaporator 102 , between the evaporator 102 and the heater core 103 , and downstream of the heater core 103 and the electric heater 104 .

The evaporator 102 and the heater core 103 are provided over the upper flow path 105 and the lower flow path 106 . The upper flow path 105 is provided with a first temp door 111 for controlling the amount of air passing and bypassing the heater core 103 , and the lower flow path 106 is provided with the heater core 103 passing through the first temp door 111 . A second temp door 112 for controlling the amount of air and bypassing air is provided.

The upper flow path 105 includes an upper cold air flow path and an upper hot air flow path, and the lower flow path 106 includes a lower hot air flow path and a lower cold air flow path. The upper cold air passage, the upper warm air passage, the lower warm air passage, and the lower cold air passage are sequentially formed from the upper part to the lower part. A defrost vent 116 and a face vent 117 are provided in the upper flow path 105 , and a floor vent 118 is provided in the lower flow path 106 .

The upper flow path 105 and the lower flow path 106 are configured to communicate with each other, and the floor door 123 opens and closes the communication path between the upper flow path 105 and the lower flow path 106 . When the communication path between the upper flow path 105 and the lower flow path 106 is opened, the air in the lower flow path 106 rises to the upper flow path 105 and can be discharged through the face vent 117 .

The floor door 123 is positioned to face the rear surface of the heater core 103 , more specifically, the rear surface of the electric heater 104 . The floor door 123 closes the communication path between the upper flow path 105 and the lower flow path 106 by contacting the partition wall 150 located at the rear end of the heater core 103 and the electric heater 104 when the floor door 123 rotates in the maximum clockwise direction. do. When the floor door 123 is rotated in the maximum clockwise direction, the floor door 123 comes into contact with the partition wall 150 located at the rear end of the heater core 103 and the electric heater 104 to form an upper flow path 105 and a lower flow path. It functions as a dividing wall dividing (106). When the floor door 123 is rotated to the maximum counterclockwise, the floor vent 118 is closed, and the upper flow path 105 and the lower flow path 106 communicate with each other.

The face vent 117 includes a center vent 117b that blows air toward the center of the occupant and a side vent 117a that blows air toward the side of the occupant. The center vent 117b and the side vent 117a that control the opening degree of the face vent 117 are opened and closed by the vent door 122 . The center vent 117b is disposed at both left and right edges of the air conditioning case in the vehicle width direction, and the side vent 117a is disposed in the center portion of the air conditioning case between the center vents 117b in the vehicle width direction.

An air conditioner for a two-layer flow vehicle according to an embodiment of the present invention includes a means for reducing a left-right temperature difference. The left and right temperature difference reducing means reduces the cross-sectional area of the flow path discharged to the center vent 117b in the first air conditioning mode, and reduces the cross-sectional area of the flow path discharged to the side vent 117a in the second air conditioning mode. As a result, the left and right temperature difference reducing means functions to reduce the temperature difference between the outlet of the center vent 117b and the outlet of the side vent 117a.

The left and right temperature difference reducing means includes a first baffle 210 and a second baffle 220 . The first baffle 210 is provided in the center vent 117b and is formed to block a portion of the flow path of the center vent. The second baffle 220 is provided in the side vent 117a and is formed to block a portion of the flow path of the side vent. The first baffle 210 and the second baffle 220 are formed to protrude from the inner wall of the air conditioning case 110 toward the air passage.

On the other hand, the vent door 122 is composed of a rotating shaft 1221 and flat parts 1222 and 1223. The flat plate parts 1222 and 1223 are formed to extend in a radial direction about the rotation shaft 1221 . That is, the vent door 122 has a shape in which the flat parts 1222 and 1223 extend to both sides about the rotation shaft 1221 . When the vent door 122 opens the face vent 117 to the maximum, the flat plate parts 1222 and 1223 are located in an approximately vertical direction, and when the vent door 122 closes the face vent 117, the flat plate part 1222 , 1223) is located approximately in the transverse direction.

The first baffle 210 is formed upstream compared to the second baffle 220 in the air flow direction. That is, the first baffle 210 is formed below the second baffle 220 , and the second baffle 220 is positioned at the rear end of the outlet and the first baffle 210 is positioned at the front end of the outlet. In addition, the first baffle 210 is formed at a height corresponding to the rotation shaft 1221 of the vent door 122 .

In more detail, the first baffle 210 and the second baffle 220 are formed to extend forward in the transverse direction from the inner wall of the rear end of the air conditioning case 110 opposite to the defrost vent 116 . In the vehicle front-rear direction, the defrost vent 116 is located in front of the air conditioning case 110 , and the face vent 117 is located in the rear of the air conditioning case 110 .

The first baffle 210 and the second baffle 220 are formed to extend in the lateral direction from the rear end inner wall of the air conditioning case 110 toward the front, so that the warm air rising through the heater core 103 and the electric heater 104 . can effectively reduce the amount of

In the vent mode, the first baffle 210 limits the amount of warm air discharged through the center vent 117b. In addition, in the bi-level mode, the second baffle 220 limits the amount of warm air discharged through the side vent 117a.

More specifically, in the vent mode, the first baffle 210 reduces the cross-sectional area of the flow path 192 close to the warm air flow path among the outlets of the center vent 117b, and in the bi-level mode, the second baffle 220 has the side vent 117a ) of the outlet, the cross-sectional area of the flow path 192 close to the warm air flow path is reduced. That is, in the vent mode, the cross-sectional area of the warm air passage of the side vent 117a is formed to be wider than the cross-sectional area of the warm air passage of the center vent 117b, and in the bi-level mode, the cross-sectional area of the warm air passage of the side vent 117a is the center vent 117b. ) is formed to be narrower than the cross-sectional area of the hot air flow path.

8 and 9 , in the vent mode, the first baffle 210 reduces the width of the flow path 192 close to the warm air flow path among the outlets of the center vent 117b. That is, the width B of the warm air flow path of the central side vent 117a in the vehicle width direction is wider than the width A of the warm air flow path of the center vent 117a on both sides in the vehicle width direction. (B>A) . Through this configuration, it is possible to reduce the temperature difference between the center vent 117a and the side vent 117b in the vent mode.

10 and 11 , in the bi-level mode, the second baffle 220 reduces the width of the flow path 192 close to the warm air flow path among the outlets of the side vent 117a. That is, the width C of the warm air flow path of the central side vent 117a in the vehicle width direction is narrower than the width D of the warm air flow path of the center vent 117a on both sides in the vehicle width direction. (D>C) . Through this configuration, it is possible to reduce the temperature difference between the center vent 117a and the side vent 117b in the bi-level mode.

That is, in the bi-level mode, the rotation angle of the vent door 122 closes the flow path of the face vent 117 more than that in the vent mode. In the vent mode, the vent door 122 is rotationally controlled to open the flow path of the face vent 117 , and in the bi-level mode, one end of the vent door 122 faces the second baffle 220 .

In the vent mode, the air discharged through the center vent 117b has a higher temperature than the air discharged through the side vent 117a. The first baffle 210 reduces the amount of warm air to the center vent 117b by partially blocking the warm air moving from the lower part to the upper part, thereby lowering the discharge temperature of the center vent 117b relatively. In this case, when only the first baffle 210 is provided, hot air is further discharged to the side vent 117a by the first baffle 210 in the bi-level mode, thereby increasing the left and right temperature difference.

In order to solve this problem, as the second baffle 220 is provided in the side vent 117a, the amount of warm air discharged to the side vent 117a in the bi-level mode is reduced to lower the discharge temperature of the side vent 117a. can In this case, the second baffle 220 hardly affects the flow of air discharged to the side vent 117a in the vent mode, and thus does not affect the left and right temperature difference.

In this way, the first baffle 210 and the second baffle 220 are provided in the center vent 117b and the side vent 117a, respectively, and the positions of the first baffle 210 and the second baffle 220 are respectively provided. By placing it at the front and rear ends of the outlet, it is possible to simultaneously solve the problem of the temperature difference between the left and right in the bi-level mode as well as in the vent mode.

In addition, when the vent door 122 is closed, the first baffle 210 is formed to protrude from the door seat 191 that is the sealing surface of the air conditioning case 110 . In addition, the first baffle 210 has a larger protrusion length than the second baffle 220 . As described above, the rotation angle of the vent door 122 in the bi-level mode is rotationally controlled to further close the flow path of the face vent 117 than in the vent mode.

Meanwhile, the second baffle 220 is formed to have the same protrusion length as the door seating portion 191 , and has a length that does not come into contact with the vent door 122 . That is, the second baffle 220 does not contact the vent door 122 when the vent door 122 closes the face vent 117 in the bi-level mode, and is located between the vent door 122 and the second baffle 220 . microscopic gaps are formed in the

Through this configuration, the first baffle 210 located at the height of the rotation shaft 1221 of the vent door 122 can effectively reduce the amount of warm air that rises in the vent mode, and the flat plate portion 1222 on one side of the vent door 122 . ), the second baffle 220 facing the flat plate portion 1222 can significantly reduce the amount of warm air rising in the bi-level mode while hardly affecting the air flow in the vent mode.

In addition, the first baffle 210 and the second baffle 220 are disposed at positions extending upward from the communication path between the upper flow path 105 and the lower flow path 106 . Through this configuration, when the communication path between the upper flow path 105 and the lower flow path 106 is opened, not only the warm air through the upper flow path 105 but also the warm air through the lower flow path 106 is transmitted to the first baffle 210 or It is more effective in reducing the left and right temperature difference because it is blocked by the second baffle 220 .

Now, an operation example of the present invention will be described. In the vent mode, the first temp door 111 opens the upper hot air passage and the upper cold air passage. The second temp door 112 opens the lower hot air passage and the lower cold air passage. The floor door 123 closes the floor vent 118 . The cold air of the upper flow path 105 passing through the evaporator 102 and bypassing the heater core 103 and the electric heater 104 and the upper flow path 105 passing through the heater core 103 and the electric heater 104 The warm air is discharged through the face vent 117 .

In addition, some of the cold air of the lower flow path 106 passing through the evaporator 102 and bypassing the heater core 103 and the electric heater 104 is discharged through the console vent 119 , and the cold air and the heater core 103 are discharged through the console vent 119 . ) and the warm air of the lower flow path 106 passing through the electric heater 104 moves to the upper flow path 105 through the communication path between the upper flow path 105 and the lower flow path 106 and is discharged through the face vent 117 . do. The floor door 123 opens a communication path between the upper flow path 105 and the lower flow path 106 .

In this case, the first baffle 210 lowers the discharge temperature of the center vent 117b by reducing the amount of the rising hot air discharged to the center vent 117b. The second baffle 220 hardly affects the air discharged to the side vent 117a.

In the bi-level mode, the first temp door 111 opens the upper hot air passage and the upper cold air passage. The second temp door 112 opens the lower hot air passage and the lower cold air passage. The floor door 123 opens the floor vent 118 . The cold air of the upper flow passage 105 passing through the evaporator 102 and bypassing the heater core 103 and the electric heater 104 and the upper passage 105 passing through the heater core 103 and the electric heater 104 The warm air is discharged through the face vent 117 .

In addition, some of the cold air of the lower flow path 106 passing through the evaporator 102 and bypassing the heater core 103 and the electric heater 104 is discharged through the console vent 119 , and the cold air and the heater core 103 are discharged through the console vent 119 . ) and the warm air of the lower flow path 106 passing through the electric heater 104 moves to the upper flow path 105 through the communication path between the upper flow path 105 and the lower flow path 106 and is discharged through the face vent 117 . do.

The floor door 123 opens a communication path between the upper flow path 105 and the lower flow path 106 . Part of the air in the lower flow path 106 is discharged into the room through the floor vent 118 , and the other part flows into the upper flow path 105 through the communication path between the upper flow path 105 and the lower flow path 106 .

In this case, the second baffle 220 lowers the discharge temperature of the side vent 117a by reducing the amount of the rising hot air discharged to the side vent 117a. In the vent door 122 , the end of the flat plate portion 1222 is almost adjacent to the end of the second baffle 220 , thereby reducing the flow path width, thereby greatly reducing the amount of warm air rising.

As such, in the bi-level mode, the vent door 122 is rotationally controlled to further close the face vent 117 compared to the vent mode, and by optimizing the positions of the first baffle 210 and the second baffle 220, the vent mode In addition, it can effectively solve the problem of the left-right temperature difference in the bi-level mode.

Up to now, the vehicle air conditioner according to the present invention has been described with reference to the embodiment shown in the drawings, but this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true technical protection scope should be determined by the technical spirit of the appended claims.

102: evaporator 103: heater core
104: electric heater
110: air conditioning case 111: first temp door
112: second temp door 116: defrost vent
117: face vent 118: floor vent
119: console vent
121: defrost door 122: bent door
123: floor door 124: console door
150: dividing wall
117a: side vent 117b: center vent
1221: axis of rotation
1222, 1223: flat plate
210: first baffle 220: second baffle

Claims (14)

A vehicle having an air conditioning case having a plurality of air outlets, a cooling heat exchanger and a heating heat exchanger sequentially formed in an air flow path of the air conditioning case, wherein the air outlet has a face vent composed of a center vent and a side vent In the air conditioner,
In the first air conditioning mode, the cross-sectional area of the flow path discharged to the center vent is reduced, and in the second air conditioning mode, the cross-sectional area of the flow path discharged to the side vent is reduced, thereby reducing the temperature difference between the center vent outlet and the side vent outlet. A vehicle air conditioning system. According to claim 1,
The left and right temperature difference reducing means is:
a first baffle blocking a portion of the flow path of the center vent; and
and a second baffle blocking a part of the flow path of the side vent. 3. The method of claim 2,
In the vent mode, the first baffle reduces the cross-sectional area of the flow path close to the warm air flow path among the center vent outlet,
In the bi-level mode, the second baffle reduces the cross-sectional area of a flow path close to the warm air flow path among the side vent outlets. 4. The method according to any one of claims 1 to 3,
In vent mode, the cross-sectional area of the hot air flow path of the side vent is wider than the cross-sectional area of the center vent's warm air flow path.
In the bi-level mode, the cross-sectional area of the hot air passage of the side vent is narrower than the cross-sectional area of the warm air passage of the center vent. 4. The method of claim 2 or 3,
The first baffle is formed at an upstream side in an air flow direction compared to the second baffle. 4. The method of claim 2 or 3,
and a vent door for adjusting the opening degree of the face vent,
The first baffle is formed to protrude from a door seating portion that is a sealing surface of the air conditioning case when the vent door is closed. 7. The method of claim 6,
The first baffle has a larger protrusion length than the second baffle. 7. The method of claim 6,
The second baffle is formed to have the same protrusion length as the door seat portion, but is formed to have a length that does not come into contact with the vent door. 4. The method of claim 2 or 3,
and a vent door for adjusting the opening degree of the face vent,
In vent mode, the vent door is rotationally controlled to open the flow path of the face vent,
An air conditioner for a vehicle in which one end of the vent door is rotated to face the second baffle in bi-level mode. 4. The method of claim 2 or 3,
The first baffle and the second baffle are formed to extend in a transverse direction toward the front from the rear end inner wall of the air conditioning case, which is opposite to the defrost vent. 7. The method of claim 6,
The vent door includes a flat plate extending in a radial direction about a rotation axis, and the first baffle is formed at a height corresponding to the rotation axis of the vent door. 4. The method according to any one of claims 1 to 3,
The air flow path of the air conditioning case has a two-layer flow structure in which an upper flow path through which outside air flows and a lower flow path through which bet air flows are separated, and the upper flow path and the lower flow path can communicate with each other, so that the air in the lower flow path rises to the upper flow path. A vehicle air conditioner that can be discharged through a face vent. 4. The method according to any one of claims 1 to 3,
and a vent door for adjusting the opening degree of the face vent,
In bi-level mode, the rotation angle of the vent door is a vehicle air conditioner that closes the face vent passage more than in the vent mode. 13. The method of claim 12,
The first baffle and the second baffle are disposed at positions extending upward from the communication path of the upper flow path and the lower flow path.

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