KR102536569B1 - Air conditioner for vehicle - Google Patents

Abstract

The present invention relates to an air conditioner for a vehicle that uses a two-layer flow and is capable of separately adjusting the temperature of front and rear seats. An air conditioner for a vehicle includes an air conditioning case 20 provided with an air inlet; A blower for sucking air into the air conditioning case, a two-layer flow partition provided to divide the inner space of the air conditioning case into a first passage and a second passage so that the air sucked by the blower flows respectively, the first passage and the second passage An air conditioner for a vehicle including a heat exchanger for cooling and a heat exchanger for heating to heat air introduced through an air inlet disposed in a passage, wherein the first passage includes a defrost outlet connected to a front seat of the vehicle and a front The second passage communicates with the front-vent outlet, and the second passage communicates with the front-floor outlet connected to the front seats of the vehicle and the rear seat outlet of the vehicle, and further comprises a rear door installed to open and close the rear seat outlet of the vehicle. include

Description

Vehicle air conditioner {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 using a two-layer flow and capable of separately adjusting the temperature of front and rear seats.

An air conditioner for a vehicle is an interior part of a vehicle installed for the purpose of securing front and rear views of a driver by cooling and heating the interior of a vehicle in summer or winter, or by removing frost from a windshield in rainy weather or winter. Such vehicle air conditioners are usually equipped with a heating device and a cooling device at the same time, so that after selectively introducing outside air or air, the air is heated or cooled and blown into the vehicle interior to cool, heat, or ventilate the interior of the vehicle.

In general, when heating the interior of a vehicle in winter, cold outside air is introduced to prevent window glass from frosting. However, this results in lowering the indoor air temperature. In order to solve these problems, an air conditioner for supplying two-layer flow has been developed, which supplies outside air to the window glass of the vehicle and supplies air to the inside of the vehicle.

An example of an air conditioner for a vehicle for supplying such a two-layer flow is shown in FIG. 1 . The vehicle air conditioner includes an air conditioning case (1) and a blower unit (2) for flowing air provided inside the air conditioning case (1), a cooling heat exchanger (3) for cooling the air, and a heating heat exchanger (4) for heating the air. includes

The cooling heat exchanger 3 and the heating heat exchanger 4 may be variously disposed apart from each other. At this time, the heating heat exchanger 4 is located downstream of the cooling heat exchanger 3 on the air flow path.

In addition, a temperature control door 5 is provided to cool and heat the interior of the vehicle to an appropriate temperature by appropriately mixing the air cooled by the cooling heat exchanger 3 and the air heated by the heating heat exchanger 4.

The air inlet is separated into an outside air inlet 7 and an inside air inlet 8 by a partition wall 6 . The air outlet is provided with a defrost vent 10 and a face vent 11 provided on the upper part of the air conditioning case 1 and a floor vent 9 provided on the rear lower part of the air conditioning case 1.

At this time, there is a problem in that air conditioning for the front seat and the rear seat cannot be separately provided because a discharge port for air conditioning of the rear seat is not separately provided. That is, the conventional air conditioner for a vehicle has a problem of causing inconvenience to the occupants of the vehicle by failing to provide the interior environment of the vehicle to the occupants of the front seat and the rear seat, respectively.

10-2003-0052633 (2003.06.27. Public)

An object of the present invention to solve the above problems is to provide an air conditioner for a vehicle that uses a two-layer flow and can separately adjust the temperature of front and rear seats.

An air conditioner for a vehicle according to the spirit of the present invention includes an air conditioning case 20 provided with air inlets 21 and 22; a blower for sucking air into the air conditioning case 20; Two-layer flow partition walls (40, 42, 44) provided to divide the inner space of the air conditioning case (20) into a first passage (A) and a second passage (B) so that the air sucked by the blower flows respectively. ; Heat exchangers for cooling (30) and heat exchangers (31 for heating) disposed in the first passage (A) and the second passage (B) to cool the air introduced through the air inlets (21, 22) ); In the air conditioner for a vehicle comprising a, the first passage (A) is in communication with the defrost (defrost) outlet 23 and the front-vent outlet (24) connected to the front seat of the vehicle, the second The passage B further includes a front-floor outlet 25 connected to the front seats of the vehicle and a rear door 100 communicating with the rear seat outlet of the vehicle and installed to open and close the rear seat outlet of the vehicle.

The rear door 100 may be installed to open and close at least a portion of an air passage connecting the first passage A and the second passage B.

The rear door 100 may be disposed at the center of the air conditioning case 20, and a pair of side doors 44 may be disposed on both sides of the rear door 100 in a horizontal direction, respectively.

The side door 44 may be installed to open and close the front floor outlet 25 .

The two-layer flow partition walls 40, 42, and 44 are positioned lower than the defrost outlet 23 and the front vent outlet 24, and are positioned above the front floor outlet 25 and the rear seat outlet of the vehicle. can

The rear door 100 may be disposed at the center of the second passage B located below the double-layer flow partition walls 40 , 42 , and 44 .

The two-layer flow partition wall includes a first partition wall 40 positioned between the air inlets 21 and 22 and the cooling heat exchanger 30, the cooling heat exchanger 30 and the heating heat exchanger ( 31) and a third partition wall positioned between the heat exchanger 31 and the inner wall of the air conditioning case 20.

The third partition wall 44 is rotatably provided to open and close the air passage P5 between the heating heat exchanger 31 and the inner wall of the air conditioning case 20, so that the rear door 100 and the rear door It may include side doors 44 provided on both sides of (100).

When the air passage P5 is opened by at least one of the rear door 100 and the side door 44, at least a portion of the second passage B located below the first passage A Air may flow through the first passage (A).

When the air passage P5 is opened, the rear door 100 may guide air flowing from the second passage B to the first passage A along the air passage P5.

The rear door 100 may be provided in the shape of a dome door.

The present invention can provide an air conditioner for a vehicle that can prevent frost and increase heating efficiency by using two-layer flow, and can separately control the temperature of front seats and rear seats.

In addition, a heat exchanger for cooling, a heat exchanger for heating, a two-layer flow partition, and a temperature control door can be efficiently disposed inside the air conditioning case to provide an air conditioning case with a minimized volume.

1 is a view showing a conventional vehicle air conditioner.
2 and 3 are diagrams illustrating an air conditioner for a vehicle according to an embodiment of the present invention.
4 is a view showing a vent mode of an air conditioner for a vehicle according to an embodiment of the present invention.
5 is a view showing a mixed mode of an air conditioner for a vehicle according to an embodiment of the present invention.
6 is a diagram showing a two-layer flow mode of an air conditioner for a vehicle according to an embodiment of the present invention.
7 is a diagram showing a defrost mode of an air conditioner for a vehicle according to an embodiment of the present invention.

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

2 and 3 are diagrams illustrating an air conditioner for a vehicle according to an embodiment of the present invention. FIG. 2 shows a side surface of the vehicle air conditioner, and FIG. 3 shows a simplified front view based on the side surface of FIG. 2 .

An air conditioner for a vehicle includes an air conditioning case 20 provided with an air inlet. In addition, at least one air outlet is provided in the air conditioning case 20 .

The air conditioning case 20 may be provided in a form formed by assembling a left case and a right case divided from each other. At least one air inlet and one or more air outlets may be provided. A blower (not shown) is installed on the air inlet side.

Although the blowing device is not shown in the drawings, a blowing fan (not shown) is installed to blow air toward the air conditioning case 20 so that internal or external air can be introduced.

The air inlet may be connected to the inside air inlet and the outside air inlet. Only indoor or outdoor air may be introduced into the air inlet by an indoor/outdoor air conversion door or the like, or indoor and outdoor air may be introduced simultaneously.

In general, a plurality of air outlets are provided and connected to a duct communicating with a specific part of the vehicle interior. Accordingly, the cooled and heated air may be discharged to a specific part of the vehicle interior. For example, it may be discharged to the windshield of the vehicle, the front seat occupant's face and feet, and the back seat occupant's face and feet.

As shown in FIG. 2, the air conditioner for a vehicle of the present invention includes a defrost discharge port 23 provided to discharge conditioned air in the direction of the window glass of the vehicle, and a conditioned air provided to discharge toward the upper front seats of the vehicle. A front-vent outlet (24), a front-floor outlet (25) prepared to discharge conditioned air toward the lower front seats of the vehicle, and a conditioned air prepared to discharge toward the upper rear seats of the vehicle It includes a rear-vent outlet 26 and a rear-floor outlet 27 provided to discharge the conditioned air toward the bottom of the rear seat of the vehicle.

At this time, the defrost discharge port 23, the front-vent discharge port 24, and the front-floor discharge port 25 are referred to as front seat discharge ports of the vehicle because they communicate with the front seat portion of the vehicle. . In addition, the rear-vent discharge port 26 and the rear-floor discharge port 27 are referred to as rear-seat discharge ports of the vehicle because they communicate with the rear seat portion of the vehicle.

Each discharge port is provided with a door 28 for adjusting the opening of each discharge port. The door 28 may be closed in various forms, and may be provided in a form that selectively opens a plurality of discharge ports.

As shown, the defrost outlet 23 and the front vent outlet 24 are located on the upper part of the air conditioning case 20, and the rear vent outlet 26 and the rear floor outlet 27 are located at the rear of the air conditioning case 20. may be located at the bottom.

At this time, as shown in FIG. 3, the front floor outlet 25 is located on the side of the air conditioning case. More specifically, the front floor outlet 25 is located on the lower side of both sides of the air conditioning case.

In the air conditioning case 20, a heat exchanger 30 for cooling and a heat exchanger 31 for heating are disposed to condition air introduced through the air inlet. The cooling heat exchanger 30 may be provided by being installed on the refrigerant circulation line. As the refrigerant circulates, the air passing through the cooling heat exchanger 30 exchanges heat with the refrigerant to cool the air.

The heat exchanger 30 for cooling and the heat exchanger 31 for heating are disposed spaced apart in the air conditioning case 20 . As shown in FIG. 2 , the cooling heat exchanger 30 is disposed adjacent to the air inlet so that the air introduced through the air inlet passes through the cooling heat exchanger 30 . The heat exchanger 31 for heating is disposed at the rear of the heat exchanger 30 for cooling so as to heat the air that has passed through the heat exchanger 30 for cooling.

In addition, the vehicle air conditioner includes a double-layer flow bulkhead for supplying a double-layer flow. The two-layer flow partition wall is provided to divide the inner space of the air conditioning case 20 into a first passage (A) and a second passage (B). In particular, the two-layer flow partition wall may be provided to extend in the horizontal direction of the air conditioning case 20 so as to separate the inner space of the air conditioning case 20 vertically.

Hereinafter, the horizontally extended line of the two-layer flow partition is referred to as the reference line L, and is indicated by a dotted line in the drawings. This horizontal direction is substantially parallel to the direction in which air flows into the air conditioning case 20 . In addition, a passage located above the reference line (L) is referred to as a first passage (A), and a passage located below the reference line (L) is referred to as a second passage (B).

As shown in the drawing, the reference line (L) is provided in the horizontal direction of the air conditioning case 20, and the heat exchanger 30 for cooling and the heat exchanger 31 for heating are installed in the vertical direction of the air conditioning case 20. It can be. That is, the heat exchanger 30 for cooling and the heat exchanger 31 for heating are installed perpendicularly to the direction in which air is introduced, so that the contact area with air can be widened.

The defrost outlet (23) and the front vent outlet (24) are located at the upper part of the reference line (L), and the front floor outlet (25), rear vent outlet (26) and rear floor outlet (27) are located at the lower part do. That is, the two-layer flow partition wall is located lower than the defrost discharge port 23 and the front vent discharge port 24, and is located above the front floor discharge port 25, the rear vent discharge port 26 and the rear floor discharge port 27. .

In other words, the first passage A located above the two-layer flow partition walls 40, 42, and 44 communicates with the defrost outlet 23 and the front vent outlet 24 among the front seat outlets of the vehicle, and the two-layer flow partition wall The second passage (B) located under (40, 42, 44) communicates with the front floor discharge port (25) and the rear seat discharge port (26, 27) of the vehicle.

The two-layer flow barrier rib includes a first barrier rib 40, a second barrier rib 42, and a third barrier rib sequentially disposed along the reference line L. The first partition wall 40 is located between the air inlet and the heat exchanger 30 for cooling, and the second partition wall 42 is located between the heat exchanger 30 for cooling and the heat exchanger 31 for heating. The barrier rib is located between the heat exchanger 31 for heating and the inner wall of the air conditioning case 20 .

The first partition wall 40 is provided to divide the air inlet into upper and lower portions so as to separate air introduced through the air inlet. The air inlet is separated into a first inlet 21 and a second inlet 22 located below the first inlet 21 by the first partition wall 40 . That is, the first inlet 21 communicates with the first passage A and the second inlet 22 communicates with the second passage B.

Internal air and outdoor air may respectively flow into the first inlet 21 and the second inlet 22 . That is, bet or outside air may flow into both the first inlet 21 and the second inlet 22 as needed, outside air may flow into the first inlet 21 and bet may flow into the second inlet 22 It can be.

The air introduced through the first inlet 21 may pass through the upper part of the heat exchanger 30 for cooling, and the air introduced through the second inlet 22 may pass through the lower part of the heat exchanger 30 for cooling. there is.

The second partition wall 42 is disposed so as to close the air passage between the heat exchanger 30 for cooling and the heat exchanger 31 for heating.

In addition, a temperature control door is positioned between the heat exchanger 30 for cooling and the heat exchanger 31 for heating. The temperature control door adjusts the flow path so that air passing through the heat exchanger 30 for cooling passes through or bypasses the heat exchanger 31 for heating. Therefore, the temperature control door is provided in the vertical direction of the air conditioning case 20 to adjust the flow path of the air flowing inside the air conditioning case 20 .

The temperature control door may be located above and below the second partition wall 42 . The temperature control door includes a first door 46 located above the second partition wall 42 and a second door 48 located below the second partition wall 42 . That is, the first door 46 is located above the reference line (L) and is provided in the first passage (A), and the second door 48 is located below the reference line (L) and is provided in the second passage (B) are provided in

The first door 46 and the second door 48 may be provided in the form of a sliding door. For example, as shown in the drawings, the first door 46 may be provided in the form of a curved slide door, and the second door 48 may be provided in the form of a slide door movable up and down. As an example of this, the first door 46 and the second door 48 may be provided in various forms.

The first door 46 and the second door 48 may be installed to be movable between the second partition wall 42 and the inner wall of the air conditioning case 20 . More specifically, the first door 46 moves between the upper inner wall of the air conditioning case 20 and the second partition wall 42, and the second door 48 moves between the lower inner wall of the air conditioning case 20 and the second partition wall 42. It moves between the partition walls 42.

When one side of the first door 46 and the second door 48 is in contact with the second partition wall 42, the air passing through the cooling heat exchanger 30 bypasses the heating heat exchanger 31. . That is, the first door 46 and the second door 48 block the flow path toward the heat exchanger 31 for heating, so that all air passing through the heat exchanger 30 for cooling passes through the heat exchanger 31 for heating. Bypass.

In addition, when one side of the first door 46 and the second door 48 is in contact with the inner wall of the air conditioning case 20, the air passing through the heat exchanger 30 for cooling passes through the heat exchanger 31 for heating. can pass That is, the first door 46 and the second door 48 block the flow path that bypasses the heat exchanger 31 for heating, so that all air passing through the heat exchanger 30 for cooling passes through the heat exchanger 31 for heating. ) pass through

The air that has passed through the cooling heat exchanger 30 flows into one of the first flow path P1, the second flow path P2, the third flow path P3, and the fourth flow path P4. The first flow path P1 is provided above the heat exchanger 31 for heating to bypass the heat exchanger 31 for heating, and the second flow path P2 passes through the heat exchanger 31 for heating. It is provided on the upper part of the partition wall 42 . In addition, the third flow path P3 is provided under the second partition wall 42 to pass through the heat exchanger 31 for heating, and the fourth flow path P4 is heated to bypass the heat exchanger 31 for heating. It is provided at the lower part of the heat exchanger 31 for use.

At this time, the first door 46 is installed to open and close the first flow path P1 and the second flow path P2, and the second door 48 opens and closes the third flow path P3 and the fourth flow path P4. installed to do

The third partition wall is disposed to open and close the air passage P5 between the heat exchanger 31 for heating and the inner wall of the air conditioning case 20 . Unlike the fixed first partition wall 40 and the second partition wall 42, the third partition wall is movably installed. For example, one side of the third barrier rib may be rotatably fixed to the inner wall of the air conditioning case 20 .

When the third barrier rib closes the air passage P5 between the heat exchanger 31 for heating and the inner wall of the air conditioning case 20, the third barrier rib is located approximately horizontally with the reference line L. At this time, the air introduced into the upper portion of the first partition wall 40 is discharged through the defrost discharge port 23 and the front vent discharge port 24, and the air introduced into the lower portion of the first partition wall 40 is discharged through the front floor discharge port 25. ), the rear vent outlet 26 and the rear floor outlet 27 may be discharged.

That is, the air that has passed through the first and second flow passages P1 and P2 is discharged through the defrost outlet 23 and the front vent outlet 24, and is discharged through the third and fourth flow passages P3 and P4. ) is discharged through the front floor outlet 25, the rear vent outlet 26, and the rear floor outlet 27.

In addition, when the third partition wall opens the air passage P5 between the cooling heat exchanger 30 and the inner wall of the air conditioning case 20, the air passing through the first to fourth passages P1 to P4 is displaced. It is discharged through one of the frost outlet 23, the front vent outlet 24, the front floor outlet 25, the rear vent outlet 26, and the rear floor outlet 27.

The third bulkhead includes a rear door 100 provided as a rotary door installed in the center of the air conditioning case 20 and a side door 44 provided as a flat door installed on both sides of the rear door 100. ). 2 to 7 show cross-sectional views, and the part where the rear door 100 is installed is shown as a solid line, and the part where the side door 44 is installed is shown as a dotted line.

At this time, the rear door 100 may be provided in the form of various rotatable doors, for example, may be provided in the form of a dome door. The rear door 100 may include a rotating shaft closer to the cooling heat exchanger 30 than the inner wall of the air conditioning case 20 and a dome plate that rotates according to the rotation of the rotating shaft.

When the air passage P5 is opened by at least one of the rear door 100 and the side door 44, at least some of the air in the second passage B may flow into the first passage A.

At this time, the second passage (B) includes a central passage (B1) communicating with the rear vent outlet (26) and the rear floor outlet (27), and a side passage (B2) communicating with the front floor outlet (25). . Accordingly, the rear door 100 is rotatably disposed between the central passage B1 and the first passage A, and the side door 44 is disposed between the side passage B2 and the first passage A. is rotatably placed on

In detail, the rear door 100 pivots between the air passage P5 and the outlet for the rear seat of the vehicle to selectively open and close them. That is, the rear door 100 may be disposed to close the air passage P5 and open the rear seat outlet of the vehicle so that the conditioned air is discharged through the rear vent outlet 26 and the rear floor outlet 27 . In addition, it may be arranged so that the conditioned air does not flow to the rear seat of the vehicle by closing the discharge port for the rear seat of the vehicle and opening the air passage P5.

In addition, when the air passage P5 is opened, the rear door 100 guides air flowing from the second passage B to the first passage A along the air passage P5. Hereafter, it will be described in detail with reference to FIG. 7 .

In addition, the side door 44 pivots between the air passage P5 and the front floor outlet 25 to selectively open and close them. That is, the rear door 100 may be arranged to close the air passage P5 and open the front floor outlet 25 so that conditioned air is discharged through the front floor outlet 25 .

In addition, the opening of the rear door 100 and the side door 44 may be adjusted to partially open each outlet and the air passage P5. The rear door 100 and the side door 44 may operate independently to open each outlet.

In addition, the air conditioner for a vehicle is provided to supply conditioned air to each driver's seat and front passenger seat provided in the front seat of the vehicle. As shown in FIG. 3, the first passage A may be divided into a left passage A1 and a right passage A2.

That is, the inside of the air conditioning case has five zones (the left passage A1 and the right passage A2 of the first passage A), the central passage B1 of the second passage B, and a pair of side passages B2. )) can be divided into

Hereinafter, various modes of the vehicle air conditioner according to the spirit of the present invention will be described based on the above description. These modes are exemplary and various modes other than those described below may be realized.

4 is a view showing a vent mode of an air conditioner for a vehicle according to an embodiment of the present invention.

The vent mode is a mode for quickly cooling the inside of the vehicle, such as immediately after a passenger gets into the vehicle in summer.

At this time, the inflowing air may use outside air or bet. For rapid cooling, use air with a low temperature between outdoor and indoor air. For example, when the temperature of air inside the vehicle is higher than outside air, outside air is introduced through both the first inlet 21 and the second inlet 22 . In addition, outside air flows through the first passage (A) and the second passage (B).

The air introduced into the air conditioning case 20 through the first inlet 21 and the second inlet 22 exchanges heat with the heat exchanger 30 for cooling. At this time, the first door 46 and the second door 48 open the first flow path P1 and the fourth flow path P4 bypassing the heating heat exchanger 31 for maximum cooling, and for heating. The second flow path P2 and the third flow path P3 passing through the heat exchanger 31 are closed. As shown in FIG. 4 , one side of the first door 46 and the second door 48 moves to come into contact with the second partition wall 42 .

Accordingly, all air passing through the heat exchanger 30 for cooling bypasses the heat exchanger 31 for heating. At this time, the rear door 100 rotates to open the outlet for the rear seat of the vehicle, and the side door 44 rotates to open the air passage P5. Accordingly, at least some of the air in the second passage (B) flows into the first passage (A).

At this time, each door 28 pivots to open the front vent outlet 24 and the rear vent outlet 26.

Therefore, the air that has passed through the heat exchanger 30 for cooling is supplied to the upper front and rear seats of the vehicle through the front vent outlet 24 and the rear vent outlet 26. Air supplied to the top of the vehicle can quickly cool the interior of the vehicle. In addition, since the side door 44 of the third bulkhead opens the air passage P5, the maximum amount of air can be supplied to the front seats when there are few or no occupants in the rear seats.

5 is a view showing a mixed mode of an air conditioner for a vehicle according to an embodiment of the present invention.

The mixed mode represents a general cooling/heating mode, and the air introduced into the air conditioning case 20 may use outside air or indoor air as needed.

In addition, the first door 46 and the second door 48 open each passage according to the needs of the occupant to provide conditioned air according to the target temperature. As shown in FIG. 5, the first door ( 46) and the second door 48 are located between the inner wall of the air conditioning case 20 and the second partition wall 42.

At this time, the door 28 adjusts the opening of the front vent outlet 23, the front floor outlet 24, the rear vent outlet 25, and the rear floor outlet 26 as needed.

In addition, since the third partition wall closes the air passage P5, the front seat occupants and the rear seat occupants can receive different types of conditioning air.

6 is a diagram showing a two-layer flow mode of an air conditioner for a vehicle according to an embodiment of the present invention.

The two-laminar flow mode is a mode to prevent frost on the window panes of the vehicle during maximum heating in winter.

It is efficient to use a bet with a relatively high temperature for rapid heating of a vehicle in winter. However, since bet contains a lot of moisture, there is a problem of causing frost to the window glass. At this time, it is possible to rapidly heat the room by supplying outdoor air that does not contain much moisture to the window glass side and supplying hot air to the occupant side.

Therefore, outside air is introduced through the first inlet (21) and bet is introduced through the second inlet (22). That is, outside air flows through the first passage A, and inside air flows through the second passage B.

The air introduced into the air conditioning case 20 through the first inlet 21 and the second inlet 22 exchanges heat with the heat exchanger 30 for cooling. At this time, the first door 46 and the second door 48 open the second flow path P2 and the third flow path P3 passing through the heating heat exchanger 31 for maximum heating, and heat exchange for heating. The first flow path P1 and the fourth flow path P4 bypassing the group 31 are closed. As shown in FIG. 6 , one side of the first door 46 and the second door 48 moves to come into contact with the inner surface of the air conditioning case 20 .

Accordingly, all the air passing through the heat exchanger 30 for cooling passes through the heat exchanger 31 for heating. At this time, the door 28 opens the defrost outlet 23, the front floor outlet 25, and the rear floor outlet 27. In addition, the third partition wall closes the air passage P5 between the heating heat exchanger 31 and the inner wall of the air conditioning case 20 to prevent mixing of inside and outside air.

Therefore, the outside air passing through the cooling heat exchanger 30 and the heating heat exchanger 31 is supplied to the window glass side of the vehicle through the defrost outlet 23, and the cooling heat exchanger 30 and the heating heat exchanger ( 31) is supplied to the lower front and rear seats of the vehicle through the front floor outlet 25 and the rear floor outlet 27.

The air supplied to the lower part of the vehicle rapidly heats the interior of the vehicle, and the air supplied to the window glass prevents frosting of the window glass.

7 is a diagram showing a defrost mode of an air conditioner for a vehicle according to an embodiment of the present invention.

The defrost mode is a mode for preventing frost on the window glass side without cooling or heating the inside of the vehicle. Therefore, outside air is introduced through both the first inlet 21 and the second inlet 22 and passes through the heat exchanger 30 for cooling and the heat exchanger 31 for heating.

The door 28 opens the defrost outlet 23 so that air passing through the heat exchanger 31 for heating is discharged through the defrost outlet 23 . At this time, the third partition wall opens the air passage P5 so that the air passing through the third passage P3 is also discharged through the defrost outlet 23.

At this time, the rear door 100 of the third bulkhead guides the air flowing from the second passage B to the first passage A along the air passage P5. The air in the second passage B moves to the air passage P5 along the dome plate of the rear door 100 bent at a predetermined angle.

In the above, the embodiments according to the present invention have been described. However, the present invention is not limited to the above-described embodiments, and those skilled in the art can make various changes without departing from the gist of the technical idea set forth in the claims below. You will be able to.

20: air conditioning case 21, 22: air inlet
23: defrost outlet 24: front vent outlet
25: front floor outlet 26: rear vent outlet
27: rear floor outlet 30: heat exchanger for cooling
31: heat exchanger for heating 40: first bulkhead
42: second bulkhead 44: side door
46,48: temperature control door 50: rear door
A: 1st passage B: 2nd passage
B1: Central aisle B2: Side aisle

Claims (11)

an air conditioning case 20 provided with air inlets 21 and 22;
a blower for sucking air into the air conditioning case 20;
Two-layer flow partition walls (40, 42, 44) provided to divide the inner space of the air conditioning case (20) into a first passage (A) and a second passage (B) so that the air sucked by the blower flows respectively. ;
Heat exchangers for cooling (30) and heat exchangers (31 for heating) disposed in the first passage (A) and the second passage (B) to cool the air introduced through the air inlets (21, 22) ); In the vehicle air conditioner comprising a,
The first passage (A) communicates with a defrost outlet 23 connected to the front seat of the vehicle and a front-vent outlet 24, and the second passage (B) communicates with the front seat of the vehicle. It communicates with the connected front-floor outlet 25 and the rear seat outlet of the vehicle,
Further comprising a rear door 100 installed to open and close the discharge port of the rear seat of the vehicle,
The two-layer flow partition wall includes a first partition wall 40 positioned between the air inlets 21 and 22 and the cooling heat exchanger 30, the cooling heat exchanger 30 and the heating heat exchanger ( 31) and a third partition wall positioned between the inner wall of the heat exchanger 31 and the air conditioning case 20,
The third partition wall 44 is rotatably provided to open and close the air passage P5 between the heating heat exchanger 31 and the inner wall of the air conditioning case 20, so that the rear door 100 and the rear door A vehicle air conditioner comprising side doors 44 provided on both sides of (100). According to claim 1,
The air conditioner for a vehicle, characterized in that the rear door (100) is installed to open and close at least a portion of an air passage connecting the first passage (A) and the second passage (B). According to claim 1,
The air conditioner for a vehicle, characterized in that the rear door (100) is disposed at the center of the air conditioning case (20), and a pair of side doors (44) are respectively disposed on both sides of the rear door (100) in a horizontal direction. According to claim 3,
The air conditioner for a vehicle, characterized in that the side door (44) is installed to open and close the front floor outlet (25). According to claim 1,
The two-layer flow partition walls 40, 42, and 44 are located lower than the defrost discharge port 23 and the front vent discharge port 24, and are located above the front floor discharge port 25 and the rear seat discharge port of the vehicle. Vehicle air conditioner, characterized in that. According to claim 5,
The rear door (100) is a vehicle air conditioner, characterized in that disposed in the center of the second passage (B) located below the double-layer flow partition walls (40, 42, 44). delete delete According to claim 1,
When the air passage P5 is opened by at least one of the rear door 100 and the side door 44, at least a portion of the second passage B located below the first passage A Vehicle air conditioner, characterized in that the air flows through the first passage (A). According to claim 9,
The rear door 100 guides the air flowing from the second passage (B) to the first passage (A) along the air passage (P5) when the air passage (P5) is opened. air conditioner for vehicles. According to claim 1,
The rear door 100 is a vehicle air conditioner, characterized in that provided in the form of a dome door.

Images