KR20070039739A - Rear seat air-conditioning system of vehicles - Google Patents

Abstract

The present invention relates to a rear seat air conditioner for a vehicle, and in air cooling mode, a part of the inflow air leaks from the temper door to the heater core side, and the warmth is discharged to the passenger's foot, thereby preventing the passenger from feeling uncomfortable due to unwanted warmth. It is done.

To this end, the present invention, the blower 12 for introducing the inside or outside air; A scroll case (13) mounted to the blower to guide a blowing direction of the introduced air; One side is in communication with the scroll case 13 and the other side is a warm air passage (H) having a cold air passage (C) having a roof vent outlet (14) and a floor vent outlet (15) An air-conditioning case (10) formed by branching with; An evaporator 16 mounted in the cold air passage C; A heater core 17 mounted in the warm passage H; Temp doors (Temp Door, 18) is installed in the region where the cold air passage (C) and the warm air passage (H) begins to branch to control the opening and closing of the cold air passage (C) and the warm passage (H); And a connection duct 20 for fluidly connecting the evaporator downstream side 19a and the heater core downstream side 19b.

In addition, the connection duct 20 is characterized in that formed integrally with the air conditioning case.

In addition, the cold air passage (C) of the lower end of the evaporator is characterized in that the front of the vicinity of the floor vent discharge port 15 is in communication.

Rear-Seat Air Conditioning, Cold-Roof Mode, Warm-Floor Mode, Cold / Hot Non-Mixed, Connecting Duct

Description

Rear Seat Air-conditioning System of Vehicles

1 is a cooling mode of the conventional rear-vehicle air conditioner.

Figure 2 is a heating mode of the conventional vehicle rear air conditioner.

Figure 3 is a rear seat air conditioner for a vehicle according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: air conditioning case 12: blower

13: Scroll Case 14: Roof Vent Outlet

15: Floor Vent outlet 16: Evaporator

17: Heater Core 18: Temp Door

19a: downstream side of evaporator 19b: downstream side of heater core

The present invention relates to a rear-vehicle air conditioner for a vehicle, and more particularly, in a rear-vehicle air-conditioner for a vehicle in a cold / hot / non-mixed form that independently branches a cold air passage and a warm air passage for the compact air conditioner, the downstream side of the evaporator. And a connecting duct 20 for communicating the 19a and the downstream side 19b of the heater core.

In general, an air conditioner mounted on a vehicle introduces a bet recycled from outside the vehicle or inside the vehicle into an air conditioning case through a blower, and passes an evaporator mounted therein, followed by a heater core. By selectively passing through) heat exchange is made to form cold or warm air, and thus serves to cool or heat the inside of the vehicle by distributing the cold or warm air thus formed into various zones within the vehicle according to the operation mode.

This air conditioning system is generally formed in front of the front seat, which is the instrument panel side of the front seat. However, in a vehicle with a large interior space, for example, a luxury car or a vehicle of Sport Utility Vehicles (SUV), cooling or heating effect is provided to the rear seat. Due to the lack of sufficient or independent air conditioning in the rear seats, a separate rear air conditioner is formed behind the vehicle.

These rear stone air conditioners can be classified into three types, which are equipped with only an evaporator without a heater core to supply only cold air to the rear seat, and can be equipped with both an evaporator and a heater core to supply cold or warm air or mixed air. It is possible to supply both cold and warm air by installing both evaporator and heater core, but not to mix cold and warm air with each other, but to form compact size and structure. Non-Air Mixing Type).

The cold and warm non-mixed after-air air conditioning unit has a disadvantage in that it cannot be supplied with a mixture of cold and warm air, but since the space for mixing the cold and hot air is not required, the installation space is saved and the structure is also simplified. One example is shown in FIGS. 1 and 2.

1 and 2 illustrate a cooling-roof mode and a heating-floor mode of a conventional rear-vehicle air conditioner.

As shown in FIG. 1, the rear stone air conditioner of the cold / warm non-mixed form has a scroll case 130 in which a blowing fan 120 is mounted, and one side thereof communicates with the scroll case, and the other side has a cold air passage C. And an air passage dividing into a warm passage (H), wherein the cold air passage is provided with an evaporator (160), and the heater passage (170) is installed in the warm passage, and the blowing fan. And a temporal door 180 disposed between a downstream side of the 120 and an upstream side of the heater core 170 and the evaporator 160.

According to the conventional vehicle rear air conditioner, the blower fan is rotated by a motor (not shown) connected to the blower fan, and air is introduced into the axial direction of the blower fan, and the introduced air is moved to the scroll case. It flows in the circumferential direction along the inner wall surface and passes through the scroll case. As such, the air introduced into the case 100 through the scroll case is directed toward only one side of the evaporator 160 and the heater core 170 by the temporal door 180.

That is, in the cooling-roof mode, the temp door 180 blocks the flow path in front of the heater core 170 to induce air from the blowing fan 120 to the evaporator 160 only. The cold air formed while passing through the evaporator is discharged toward the head of the rear passenger through the roof vent outlet 140, and in the case of a heating-floor mode, the temp door is By blocking the flow path in front of the evaporator, the air passing through the blower flows only toward the heater core 170 and is discharged toward the foot of the rear seat occupant through the floor vent outlet 150.

As described above, the conventional apparatus for rear-winding air conditioners of the non-cold / hot mixture type has the advantage that the space for the evaporator side cold air passage C and the heater core side hot air passage H is separated and mixed is unnecessary, thereby saving installation space. However, since the cold air is discharged only to the roof vent side and the warm air is discharged only to the floor vent side, there is a problem that the passengers ride comfort when the warm air leaks during cooling.

That is, in the case of the cooling mode (see FIG. 1), when a small amount of air leakage occurs on the temporal door 180 that blocks the flow path in front of the heater core 170, the leaked air may cause the heater core 170 to leak. At this time, the temperature of the air is raised to a high temperature of 60 ℃ or more and the hot air formed in this way is discharged through the floor vent outlet 140 toward the foot of the passengers, the passengers do not want hot There is a problem caused by the discomfort.

As a method for improving this, a method of modifying the shape of the air conditioning case 100 itself or separately installing a control valve for controlling the inflow of high temperature coolant in the high temperature coolant passage passing through the heater core 170 has been proposed. There is a problem that hinders the compaction of the air conditioning apparatus, increases the number of processes and increases the cost burden.

In addition, the method of improving the sealing property of the temporal door has a limitation due to wear of the sealing member over time, there is a problem that does not solve the discomfort of the passengers due to unwanted warm leakage.

The present invention has been proposed to solve the above problems, in the case of the cooling mode for the purpose of preventing air from being discharged to the passengers through the floor outlet by the leakage of air from the tempdoor side to block the hot air passage do.

In order to achieve the above object, the present invention includes a blower (12) for introducing the inside or outside air; A scroll case (13) mounted to the blower to guide a blowing direction of the introduced air; One side is in communication with the scroll case 13 and the other side is a warm air passage (H) having a cold air passage (C) having a roof vent outlet (14) and a floor vent outlet (15) An air-conditioning case (10) formed by branching with; An evaporator 16 mounted in the cold air passage C; A heater core 17 mounted in the warm passage H; Temp doors (Temp Door, 18) is installed in the region where the cold air passage (C) and the warm air passage (H) begins to branch to control the opening and closing of the cold air passage (C) and the warm passage (H); And a connecting duct 20 for fluidly connecting the evaporator downstream side 19a and the heater core downstream side 19b.

In addition, the connection duct 20 is characterized in that formed integrally with the air conditioning case.

In addition, the front of the cold air passage (C) of the lower end of the evaporator and the floor vent discharge port 15 is characterized in that the communication.

The features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are based on the principle that the inventor can appropriately define the concept of terms in order to explain the invention in the best way. It should be interpreted as meanings and concepts corresponding to

In addition, the structure of the automotive air conditioner not mentioned in the present specification is similar to the conventional air conditioner and its detailed description is omitted.

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

Figure 3 shows a rear seat air conditioner for a vehicle according to the present invention.

The air conditioning case 10 has one side communicating with the scroll case 13 so that the air introduced by the blower is introduced into the air conditioning case 10, and the other side thereof has the cold air passage C and the warm passage H. A plurality of outlets are formed at the end of each passageway bisected and bisected by the. The direction of the cold air passage and the warm air passage may be the same direction or the opposite direction depending on the environment of the vehicle.

The evaporator 16 is mounted in the branched cold air passage C, and the cold air formed while passing through the evaporator passes through the loop vent discharge port 14 formed at the outlet side of the cold air passage through the downstream side 19a of the evaporator. It is discharged toward the head of the rear seat occupant.

In addition, the heater core 17 is mounted in the warm passage H which is branched independently from the cold air passage, and the warm air formed while passing through the heater core passes through the heater core downstream 19b to the outlet side of the warm passage. It is discharged toward the foot part of a rear passenger through the floor vent discharge port 15 formed.

The tempor 18 is disposed between the cold air passage and the warm passage, that is, between the downstream side of the blower fan 12 and the upstream side of the heater core 17 and the evaporator 16. Air is formed so as to only flow into one side of the cold air passage on the evaporator 16 side and the warm passage on the heater core 17 side.

The connection duct 20, such as a pipe or a duct, which communicates the evaporator downstream side 19a and the heater core downstream side 19b, is a temporal door that blocks the warm passage side in the cooling mode. A small amount of air leaks from the side of 18, and the leaked air passes through the heater core 17 and rises to a high temperature of about 60 ° C. or higher during normal driving of the vehicle, and the high temperature warmth thus formed is the foot of the passenger. Before flowing out through the floor discharge port 15 facing the part, it is formed in communication with the cold air on the downstream side 19a of the evaporator to be supplied to the downstream side of the heater core 19b.

In this way, by mixing the cold air on the downstream side 19a of the evaporator with the hot air leaking in the cooling mode, the temperature of the above-mentioned leaking warmer is reduced to discharge the warm air which is not desired by the occupant to the floor vent discharge port 15. You can prevent it.

In addition, a small amount of connection duct 20 such as a pipe or a duct which communicates the evaporator downstream side 19a and the heater core downstream side 19b even when air is not leaked from the temporal door 18 side. By discharging cold air toward the foot of the rear passenger through the floor vent discharge port 15, air is discharged only through the roof vent discharge port 14 and no air is discharged to the floor vent discharge port 15. Passenger's feeling by flowing a small amount of cool air through the floor vent outlet 15 as compared with the case of the cool-vent mode of the non-air mixing type You can relax.

The connection duct 20 preferably communicates the cold air passage C of the lower end of the evaporator with the floor discharge port 15 side of the heater core downstream 19b. Since the shape and length of the heater core downstream side 19b are different depending on the shape of the vehicle on which the rear seat air conditioner is installed and the size and shape of the internal space that can be installed, the communication position of the connection member is changed. In order to prevent the warmth leaking from the temper door and passing through the heater core to be discharged as it is without being mixed with the cold air supplied through the connection duct 20, it is preferably formed in front of the floor discharge port as close as possible. something to do.

In addition, the diameter of the connection duct 20 is an element that determines the amount of cold air supplied to the heater core downstream 19b. If the inner diameter is too small, the diameter of the temporal door side may be reduced. It is difficult to sufficiently reduce the temperature of the warmth, and if the inner diameter is too large, excessive cold air is supplied to the rear passengers in the absence of air leakage at the temporal side, and thus the emotion of the rear passengers must be selected. It was shown that the inner diameter of the connection duct 20 is preferably 5mm to 15mm.

As described in detail above, according to the vehicle rear-mounted air conditioner according to the present invention, by forming only one connection member in the case of the existing rear-mounted air conditioner, there is an effect of preventing the discomfort of the occupant due to warmth leakage during cooling.

In addition, even in a cool-vent mode in which air is discharged only through the vent discharge port, a small amount of cool air flows through the floor discharge port, thereby making the passenger feel comfortable.

Claims (3)

A blower 12 for introducing an internal air or an external air; A scroll case (13) mounted to the blower to guide a blowing direction of the introduced air; One side is in communication with the scroll case 13 and the other side is a warm air passage (H) having a cold air passage (C) and a floor vent outlet (15) having a roof vent outlet (14) An air-conditioning case (10) formed by branching with; An evaporator 16 mounted in the cold air passage C; A heater core 17 mounted in the warm passage H; Temp doors (Temp Door, 18) is installed in the region where the cold air passage (C) and the warm air passage (H) begins to branch to control the opening and closing of the cold air passage (C) and the warm passage (H); And And a connecting duct (20) for communicating the evaporator downstream side (19a) and the heater core downstream side (19b). The method of claim 1, The connection duct 20, the rear seat air conditioner for a vehicle, characterized in that formed integrally with the air conditioning case. The method according to claim 1 or 2, Cold air passage (C) of the lower end of the evaporator, the rear seat air conditioner for the vehicle, characterized in that the front near the outlet vent 15 is in communication.

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