KR102559253B1 - Air conditioner for vehicle - Google Patents

Abstract

A rear air conditioner for a vehicle capable of improving mixing performance and reducing passage resistance of a flow path by securing a sufficient mixing space between cold air and warm air is disclosed. A rear air conditioner for a vehicle includes a case having an air inlet for introducing air and an air outlet for discharging air and having an air passage therein, a blower unit for blowing air through the air inlet, a cooling unit and a heating unit sequentially provided on the air passage of the case in an air flow direction, and a temperature control unit for adjusting the opening so that the air passing through the cooling unit selectively flows through the heating unit, and the air passing through the cooling unit passes through the heating unit. forming a warm air passage; a first cold air passage through which the air passing through the cooling means bypasses the heating means; and a second cold air passage spaced apart from the first cold air passage and allowing the air passing through the cooling means to bypass the heating means.

Description

Vehicle rear air conditioner {AIR CONDITIONER FOR VEHICLE}

The present invention relates to a rear air conditioner for a vehicle, and more particularly, to a rear air conditioner for a vehicle that is installed on the rear seat side of a vehicle and performs air conditioning for the rear seat of a vehicle separately from the air conditioner in the front of the vehicle.

A vehicle air conditioner is a device for cooling or heating the vehicle interior by introducing air from outside the vehicle into the vehicle interior or by heating or cooling the vehicle interior air in the process of circulating the vehicle interior air. An evaporator for cooling action and a heater core for heating action are provided inside the air conditioning case. The vehicle air conditioner is configured to selectively blow air cooled or heated by an evaporator or a heater core to each part of a vehicle interior by using a blowing mode switching door.

Since the vehicle air conditioner is configured such that air for cooling or heating is discharged from a vent duct installed on the instrument panel at the front of the vehicle interior, in the case of a large vehicle such as a luxury passenger car or a 4-wheel drive vehicle commonly referred to as a van or RV, the cooling or heating effect does not reach the rear seats sufficiently. In order to solve this problem, in the case of a vehicle with a large interior space, a separate rear air conditioner is installed between a side out panel (Side Out PNL) and a luggage trim to assist cooling and heating performance for rear seats.

1 is a cross-sectional view showing a conventional vehicle rear air conditioner. As shown in FIG. 1 , a conventional vehicle rear air conditioner includes a case 10 . The case 10 has a ventilation passage 11 having internal and external air inlets 11a and 11b at one end of the inside, and a vent duct (not shown) for blowing air from the ventilation passage 11 to the roof side of the vehicle. A vent outlet 12 communicating with and a floor outlet 13 communicating with a floor duct (not shown) for blowing air toward the floor of the vehicle. The case 10 forms one air passage 14 extending from the air passage 11 to the vent outlet 12 and the floor outlet 13 .

A blower unit 20 for forcibly introducing internal and external air through internal and external air inlets 11a and 11b is installed in the blowing passage 11, and an evaporator 30 is installed vertically in the air passage 14a closest to the blower unit 20. Heater cores 40 are installed substantially vertically at a predetermined interval on the downstream side of the evaporator 30, and a rear portion of the heater core 40 maintains a predetermined interval from the case 10 to form a warm air passage 14b.

Between the evaporator 30 and the heater core 40, a temperature control door 50 is rotatably installed around the shaft portion 51 to block air from flowing into the heater core 40 in the cooling mode and to block the air flow path so that air flows into the heater core 40 in the heating mode. A cooling mode, a heating mode, and a mixing mode are determined according to the position of the temperature control door 50 . That is, when the temperature control door 50 is rotated to a position shown in a dotted line to close the cooling air passage 14c, the heating mode is established, and when the temperature control door 50 is rotated to a position shown in a solid line to block air flow toward the heater core 40, the cooling mode is established.

In the mixing mode, a part of the cold air heat-exchanged through the evaporator 30 passes through the heater core 40, and the rest passes through the cold air passage 14c without passing through the heater core 40. and discharged indoors. In this case, numeral 60 denotes a ventilation mode switching door that is rotatably installed around the shaft 61 between the vent outlet 12 and the floor outlet 13, and closes the vent outlet 12 or the floor outlet 13. It serves to close or allow air to flow to both the vent outlet 12 and the floor outlet 13.

A conventional vehicle rear air conditioner has a problem in that the temperature mixing property is not good due to a difference in cross-sectional area between the warm air passage 14b and the cold air passage 14c and a difference in passage resistance. In addition, there is a problem in that a large temperature difference between the top and bottom of the discharged air occurs because the mixing zone (MZ) in the case is small due to space restrictions installed on the rear seat side of the vehicle.

In order to solve such conventional problems, the present invention provides a vehicle rear air conditioner capable of improving mixing performance and reducing passage resistance of a flow path by securing a sufficient mixing space between cold air and warm air.

A rear air conditioner for a vehicle according to the present invention includes a case having an air inlet for introducing air and an air outlet for discharging air, and an air passage formed therein, a blower unit for blowing air through the air inlet, a cooling unit and a heating unit sequentially provided on the air passage of the case in an air flow direction, and a temperature control unit for controlling an opening so that the air passing through the cooling unit selectively flows through the heating unit, and the air passing through the cooling unit operates on the heating unit. a warm air passage forming a passage to pass therethrough; a first cold air passage through which the air passing through the cooling means bypasses the heating means; and a second cold air passage spaced apart from the first cold air passage and allowing the air passing through the cooling means to bypass the heating means.

The rear air conditioner for a vehicle according to the present invention improves the mixing of cold air and warm air, and can reduce the width in the front and rear directions of the vehicle, thereby efficiently using the limited space inside the air conditioning case. In addition, heat exchange performance can be improved and air passage resistance can be reduced.

In addition, in the rear air conditioner for a vehicle according to the present invention, a door opens and closes a flow path and simultaneously serves as an air guide, and it is possible to improve mixing performance by minimizing thermal loss of cold air and increasing air volume of warm air.

1 is a cross-sectional view showing a conventional vehicle rear air conditioner,
2 is a cross-sectional view showing a rear air conditioner for a vehicle according to an embodiment of the present invention;
3 is a perspective view showing a first temperature control door of a rear air conditioner for a vehicle according to an embodiment of the present invention;
4 and 5 are cross-sectional views showing a vent mode of a rear air conditioner for a vehicle according to an embodiment of the present invention,
6 and 7 are cross-sectional views showing a floor mode of a rear air conditioner for a vehicle according to an embodiment of the present invention;
8 is a cross-sectional view showing a mix mode of a rear air conditioner for a vehicle according to an embodiment of the present invention.

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

2 is a cross-sectional view of a rear air conditioner for a vehicle according to an embodiment of the present invention. In the following description, the left-right direction in Fig. 2 is the "vehicle front-rear direction".

As shown in FIG. 2 , the rear air conditioner for a vehicle according to an embodiment of the present invention includes a case 100, a blower unit 150, a cooling unit 102, a heating unit 103, a temperature control unit, and a mode door 116.

An air inlet for introducing air is formed on the inlet side of the case 100, and an air discharge port for discharging air is formed on the outlet side. The air outlet includes a floor outlet 112a and a vent outlet 112b. An air passage is formed inside the case 100 . A blower unit 150 for forcibly blowing air to the air inlet of the case 100 is provided within the case 100 .

The cooling means 102 and the heating means 103 are sequentially installed in the air flow direction on the inner air passage of the case 100 . In this embodiment, the cooling means 102 is composed of an evaporator for heat exchange between the refrigerant and air, and the heating means 103 is composed of a heater core for heat exchange between cooling water and air.

The temperature control unit adjusts the opening so that the air passing through the cooling unit 102 selectively flows through the heating unit 103 . The detailed configuration of the temperature control means will be described later.

The mode door 116 controls the opening of the air outlet, and controls the amount of air discharged by adjusting the opening of the floor outlet 112a and the vent outlet 112b as it rotates between the floor outlet 112a and the vent outlet 112b.

The internal air passage of the case 100 includes a warm air passage 270 , a first cold air passage 210 and a second cold air passage 220 . The warm air passage 270 forms a flow path so that the air passing through the cooling unit 102 passes through the heating unit 103 . The first cold air passage 210 forms a flow path so that the air passing through the cooling unit 102 bypasses the heating unit 103 . The second cold air passage 220 is spaced apart from the first cold air passage 210 and forms a flow path so that the air passing through the cooling means 102 bypasses the heating means 103 .

By configuring two cold air passages in the internal air passage of the case 100, a plurality (two) of mixing zones in which cold air and warm air are mixed can be formed. Therefore, the number of mixing zones in which cold air and warm air are mixed can be increased compared to a conventional air conditioner having one cold air passage. As a result, as the cold air passage is added, mixing of cold air and warm air in the case 100 is improved, and thus a temperature difference between the upper and lower sides of the air discharged into the vehicle interior can be reduced and heat exchange performance can be improved.

In addition, the cooling means 102 and the heating means 103 are disposed horizontally in the case 100. In this case, the cooling means 102 and the heating means 103 do not need to be exactly horizontal, and it is sufficient to arrange them in a structure substantially horizontal. In addition, the air introduced from the blower unit 150 is configured to flow from the bottom to the top and be discharged through the air outlet. A cooling means 102 and a heating means 103 are sequentially provided in the air flow direction, that is, from the bottom to the top.

As the cooling means 102 and the heating means 103 are arranged horizontally, the width of the case 100 in the front-rear direction of the vehicle can be reduced. As a result, the installation space of the rear air conditioner is less restricted. In addition, as the cooling means 102 composed of an evaporator is horizontally arranged, drainage is improved and odor generation can be prevented.

More specifically, the first cold air passage 210 is provided between the heating means 103 and the inner wall of the case on the front side in the front and rear direction of the vehicle, and the second cold air passage 220 is provided between the inner wall of the case and the heating means 103 on the rear side in the front and rear direction of the vehicle. The warm air passage 270 is divided into two passages in the front-rear direction of the vehicle to form a first warm air passage and a second warm air passage.

A partition wall 252 is formed inside the case 100 to divide the air flowing through the warm air passage 270 into a first warm air passage and a second warm air passage in the front-rear direction of the vehicle. The partition wall 252 is formed between the cooling means 102 and the heating means 103, and is formed below the heating means 103, that is, on the upstream side of the heating means 103 in the air flow direction. The partition wall 252 is disposed at an intermediate portion of the heating means 103 in the front-rear direction of the vehicle.

The partition wall 252 divides the air passing through the cooling means 102 into the warm air passage 270 and guides the air to flow therethrough. The partition wall 252 is disposed at the inlet side of the heating means 103, and divides the air passing through it into two to enter the warm air passage 270. That is, the air passing through the cooling means 102 and flowing toward the warm air passage 270 where the heating means 103 is formed flows through the first warm air passage formed on the left side (vehicle front side) in FIG. 2 in the front-rear direction of the vehicle with respect to the partition wall 252 or through the second warm air passage formed on the right side (vehicle rear side) in FIG. 2 in the front-back direction of the vehicle with respect to the partition wall 252.

As shown in FIG. 2 , the partition wall 252 is formed at a position spaced a predetermined distance from the heating means 103 toward the upstream side of the air flow direction. The air divided into the first warm air passage and the second warm air passage by the partition wall 252 meets again through the partition wall 252 and flows through one warm air passage 270 . In this case, the partition wall 252 is formed at a position separated by a predetermined distance from the heating means 103 upstream in the air flow direction and extends to the downstream side of the heating means 103 to partition the entire warm air passage 270. It is also possible to have a structure. If the length of the partition wall 252 is too long, the ventilation resistance of the warm air passage increases and the air volume decreases.

The temperature control unit includes a first temperature control door 230 and a second temperature control door 240 . The first temperature control door 230 is provided between the cooling means 102 and the heating means 103 and controls the opening degree of a part of the warm air passage 270 and the first cold air passage 210 . That is, the first temperature control door 230 controls the opening degrees of the first warm air passage and the first cold air passage 210 . The second temperature control door 240 is provided between the cooling means 102 and the heating means 103 and controls the opening of the second cold air passage 220 and another part of the warm air passage 270 . That is, the second temperature control door 240 controls the opening degrees of the second warm air passage and the second cold air passage 220 .

The temperature control means is composed of two, the first temperature control door 230 and the second temperature control door 240, and the first temperature control door 230 and the second temperature control door 240 are arranged side by side in the front-back direction of the vehicle to respectively control the opening degrees of the two cold air passages and the two warm air passages. In addition, the structure comprising two temperature control doors in front and back can reduce the operating radius of the door compared to the structure consisting of one temperature control door, thereby relieving the constraints on the actuator driving the door.

The rotation of the first temperature control door 230 and the second temperature control door 240 is restricted by the partition wall 252 . Referring to FIG. 2, the rotational shaft of the first temperature control door 230 is located at the rear end of the cooling means 102, touches a portion of the inner wall of the front side of the case 100 when rotated to the maximum in a counterclockwise direction, and rotates in a clockwise direction to touch the partition wall 252. The rotational shaft of the second temperature control door 240 is located at the rear end of the cooling means 102, touches a part of the inner wall of the rear side of the case 100 when rotated to the maximum in a clockwise direction, and is rotated to touch the partition wall 252 when rotated to the maximum in a counterclockwise direction.

The partition wall 252 functions to divide the air passing through it into the first warm air passage and the second warm air passage, and also functions as a stopper to limit the operating angles of the first temperature control door 230 and the second temperature control door 240. When the first temperature control door 230 rotates counterclockwise to the maximum, the first cold air passage 210 is completely closed and the first warm air passage is opened, and when rotated clockwise to the maximum, the first cold air passage 210 is opened and the first warm air passage is completely closed. In addition, when the second temperature control door 240 is rotated clockwise to the maximum, the second cold air passage 220 is completely closed and the second warm air passage is opened, and when rotated counterclockwise to the maximum, the second cold air passage 220 is opened and the second warm air passage is completely closed.

The first temperature control door 230, the second temperature control door 240, and the mode door 116 are all made of a dome door type, that is, a rotary type. In this way, since two temperature control doors and one mode door are configured in a rotary type, and the first temperature control door 230, the second temperature control door 240, and the mode door 116 are all made of a dome door type, the air passage resistance inside the case 100 can be reduced.

3 is a perspective view illustrating a first temperature control door of a rear air conditioner for a vehicle according to an embodiment of the present invention.

3, the first temperature control door 230 is composed of a rotating shaft 2301 rotatably connected to the case 100, a dome member 2303 spaced apart from the rotating shaft 2301 and having a dome shape, and a connecting member 2302 connecting the rotating shaft 2301 and the dome member 2303. In addition, although not shown, the second temperature control door 240 and the mode door 116 may also have the same structure as the first temperature control door 230 .

At least one of the first temperature control door 230, the second temperature control door 240, and the mode door 116 is provided with a first guide member 2304. In this embodiment, it is shown that the first guide member 2304 is formed on all of the first temperature control door 230, the second temperature control door 240, and the mode door 116, and the structure of the first temperature control door 230 will be described as a representative.

The first guide member 2304 is formed on both sides of the dome member 2303 in the circumferential direction and extends outward from the dome member 2303 in the radial direction. When the door rotates, the first guide member 2304 serves to maintain airtightness by being in close contact with the inner wall or the partition wall 252 of the case 100, and at the same time guides the air to the cold air passage or the warm air passage. Performs a flow guide function. Therefore, a sufficient mixing space of cold air and warm air is secured, and temperature mixing property is improved.

Referring back to FIG. 2 , at least one of the first temperature control door 230 , the second temperature control door 240 and the mode door 116 is provided with a second guide member 2405 . In this embodiment, it is shown that the second guide member 2405 is formed only on the second temperature control door 240, but the second guide member 2405 may also be formed on the first temperature control door 230 and the mode door 116.

The second guide member 2405 extends radially inward of the dome member. The second guide member 2405 extends from the inner surface of the dome member toward the rotational axis, and has an inclined shape so that the cross-sectional area becomes smaller toward the end. Flowing air is guided to both sides of the dome member of the door, that is, to the cold air passage or the warm air passage, by the second guide member 2405, and the second guide member 2405 performs a flow path guide function. Therefore, a sufficient mixing space of cold air and warm air is secured, and temperature mixing property is improved.

A first support part 251 , a second support part 253 , and an extension part 254 are provided inside the case 100 . Both sides of the heating means 103 in the front-rear direction of the vehicle, that is, the header portion of the heater core are supported and fixed by the first support portion 251 and the second support portion 253, respectively. The first support part 251 supports and fixes one side of the heating unit 103 and forms a first cold air passage 210 between the inner wall and the front side of the case 100 . The second support part 253 supports and fixes the other side of the heating means 103 and forms the second cold air passage 220 between the inner wall and the rear side of the case 100 . The extension part 254 extends from the second support part 253 toward the floor outlet 112a. A detailed configuration of the extension part 254 will be described later.

4 and 5 are cross-sectional views illustrating a vent mode of a rear air conditioner for a vehicle according to an embodiment of the present invention.

Referring to FIG. 4 , in the vent mode, the first temperature control door 230 closes the first warm air passage and opens the first cold air passage 210, and the second temperature control door 240 closes the second warm air passage and opens the second cold air passage 220. Then, the mode door 116 closes the floor outlet 112a and opens the vent outlet 112b. The air introduced through the blower unit 150 passes through the cooling unit 102, is cooled, passes through the first cold air passage 210 and the second cold air passage 220, and is discharged into the vehicle interior through the vent outlet 112b.

Referring to FIG. 5 , the air discharge direction of the vent outlet 112b is perpendicular to the heat transfer area of the heating means 103 . The heating means 103 is disposed substantially horizontally in the front-rear direction of the vehicle, and the heat transfer area of the heating means 103 is substantially parallel to the front-rear direction of the vehicle. As the air discharge direction of the vent outlet 112b is perpendicular to the heat transfer area of the heating means 103, air passage resistance can be minimized.

In the vent mode, part of the air passing through the cooling unit 102 flows through the first cold air passage 210 and the other part flows through the second cold air passage 220 . In this case, the first cold air passage 210 relatively close to the air outlet forms a smaller discharge area than the second cold air passage 220 relatively far from the air outlet.

That is, it is preferable to maintain the air passing through the cooling means 102 at a rate of 60% toward the vent outlet 112b and 40% toward the floor outlet 112a. The error can be formed to about ±5%. Thermal loss of cold air can be reduced by maintaining the passage area ratio (A) of the second cold air passage 220 and the passage area ratio (B) of the first cold air passage 210, which are shown by the double-dot chain line in FIG. 5, at about 60% ± 5%: 40% ± 5%.

6 and 7 are cross-sectional views illustrating the floor mode of the rear air conditioner for a vehicle according to an embodiment of the present invention.

Referring to FIG. 6 , in the floor mode, the first temperature control door 230 opens the first warm air passage and closes the first cold air passage 210, and the second temperature control door 240 opens the second warm air passage and closes the second cold air passage 220. Then, the mode door 116 opens the floor outlet 112a and closes the vent outlet 112b. The air introduced through the blower unit 150 is heated through the heating means 103 and then discharged into the vehicle interior through the floor outlet 112a.

Referring to FIG. 7 , the air discharge direction of the floor outlet 112a is parallel to the heat transfer area of the heating means 103 . The heating means 103 is disposed substantially horizontally in the front-rear direction of the vehicle, and the heat transfer area of the heating means 103 is substantially parallel to the front-rear direction of the vehicle. That is, by extending the extension part 254 from the second support part 253 toward the floor discharge port 112a, the air discharge direction of the floor discharge port 112a can be formed parallel to the heat transfer area of the heating unit 103. Through this configuration, air passage resistance can be minimized.

8 is a cross-sectional view showing a mix mode of a rear air conditioner for a vehicle according to an embodiment of the present invention.

Referring to FIG. 8 , in the mixed mode, the first temperature control door 230 opens both the first warm air passage and the first cold air passage 210, and the second temperature control door 240 opens both the second warm air passage and the second cold air passage 220. And, the mode door 116 is positioned approximately midway between the floor outlet 112a and the vent outlet 112b, and both the floor outlet 112a and the vent outlet 112b are open. Some of the air introduced through the blower unit 150 is cooled through the cooling means 102 and the other part is heated through the heating means 103, mixed in the two mixing zones M, and then the floor outlet 112a and the vent outlet 112b. It is discharged into the vehicle interior.

In FIG. 8 , the mixing zone M looks like one, but the cold air passing through the first cold air passage 210 and the warm air passing through the first warm air passage form one mixing zone, and the cold air passing through the second cold air passage 220 and the warm air passing through the second warm air passage form another mixing zone.

Referring back to FIG. 7 , the sum of the inlet cross-sectional area C of the first warm air passage and the inlet cross-sectional area D of the second warm air passage is greater than or equal to the outlet cross-sectional area E of the warm air passage 270 . Through this configuration, passage resistance on the side of the warm air passage 270 is reduced, and mixing performance can be improved by increasing the air volume of warm air on the side of the warm air passage 270 .

So far, the vehicle rear air conditioner according to the present invention has been described with reference to the embodiment shown in the drawings, but this is only exemplary, and anyone skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true scope of technical protection should be determined by the technical spirit of the appended claims.

100: case
112a: floor outlet 112b: vent outlet
102: cooling means (evaporator) 103: heating means (heater core)
116: mode door 150: blower unit
210: first cold air passage 220: second cold air passage
230: first temperature control door 240: second temperature control door
251: first support 252: partition wall
253: second support 254: extension
270: warm air passage 2304: first guide member
2405: second guide member

Claims (10)

A case 100 having an air inlet for introducing air and an air outlet for discharging air and having an air passage therein, a blower unit 150 for blowing air through the air inlet, a cooling means 102 and a heating means 103 sequentially provided on the air passage of the case 100 in the air flow direction, and the air passing through the cooling means 102 selectively flows through the heating means 103 In the rear air conditioner for a vehicle including a temperature control means for adjusting the temperature,
a warm air passage 270 forming a flow path so that the air passing through the cooling means 102 passes through the heating means 103;
a first cold air passage 210 for allowing the air passing through the cooling means 102 to bypass the heating means 103; and
A second cold air passage 220 spaced apart from the first cold air passage 210 and allowing the air passing through the cooling means 102 to bypass the heating means 103,
The temperature control means is:
a first temperature control door (230) provided between the cooling means (102) and the heating means (103) and adjusting the opening degree of a part of the warm air passage (270) and the first cold air passage (210); and
A second temperature control door 240 provided between the cooling means 102 and the heating means 103 and adjusting the opening degree of the other part of the warm air passage 270 and the second cold air passage 220,
At least one of the first temperature control door 230 and the second temperature control door 240 is provided with a second guide member 2405 extending radially inward of the dome member,
The first temperature control door 230 or the second temperature control door 240 is composed of a rotating shaft rotatably connected to the case 100, a dome member formed in a dome shape, and a connecting member connecting the rotating shaft and the dome member,
The second guide member (2405) is formed to obliquely extend from the inner surface of the dome member so that the cross-sectional area becomes smaller toward the end toward the rotation axis, and the inclined surfaces of the second guide member (2405) guide the flowing air to the cold air passage and the warm air passage, which are both sides of the dome member. According to claim 1,
The cooling means 102 and the heating means 103 are disposed horizontally in the case 100, and the air introduced from the blower unit 150 flows from the bottom to the top and is discharged through the air outlet,
The air outlet includes a floor outlet 112a and a vent outlet 112b; The air discharge direction of the floor outlet 112a is formed parallel to the heat transfer area of the heating means 103, and the air discharge direction of the vent outlet 112b is perpendicular to the heat transfer area of the heating means 103,
a first support part 251 supporting and fixing one side of the heating unit 103 and forming a first cold air passage 210 between the first side and the inner wall of the case; a second support part 253 supporting and fixing the other side of the heating unit 103 and forming a second cold air passage 220 between the second side and the inner wall of the case; And an extension part 254 extending from the second support part 253 toward the floor outlet 112a,
By extending the extension part 254 from the second support part 253 toward the floor outlet 112a, the air discharge direction of the floor outlet 112a is parallel to the heat transfer area of the heating unit 103. Vehicle rear air conditioner, characterized in that formed. delete According to claim 1,
The air outlet is composed of a floor outlet (112a) and a vent outlet (112b), and has a mode door (116) for adjusting the opening degree of the floor outlet (112a) and the vent outlet (112b); The vehicle rear air conditioner, characterized in that all of the first temperature control door (230), the second temperature control door (240) and the mode door (116) are made of dome doors. delete According to claim 4,
At least one of the first temperature control door 230, the second temperature control door 240, and the mode door 116 has a first guide member 2304 extending radially outward on both sides in the circumferential direction of the dome member. Vehicle rear air conditioner, characterized in that provided. delete According to claim 1,
The rear air conditioner for a vehicle, characterized in that the first cold air passage (210) relatively close to the air outlet forms a smaller discharge area than the second cool air passage (220) relatively far from the air outlet. According to claim 1,
A partition wall 252 is formed inside the case 100 to divide the air flowing through the warm air passage 270 into a first warm air passage and a second warm air passage in the front and rear direction of the vehicle, and the partition wall 252 is disposed at an intermediate portion of the heating means 103 in the front and rear directions of the vehicle;
A rear air conditioner for a vehicle, wherein the sum of the inlet sectional area (C) of the first warm air passage and the inlet sectional area (D) of the second warm air passage is greater than or equal to the outlet sectional area (E) of the warm air passage (270). delete

Images