KR100819013B1 - Air conditioner for vehicle - Google Patents

Abstract

A vehicle air conditioner is disclosed. The present invention is installed in the evaporator for cooling the air, and a predetermined distance apart from the evaporator, the heater core for heating the air; and the evaporator, the heater core is installed so as to be rotated therebetween to adjust the air volume of the air A lower case having a heat exchanger having a main temporal door disposed therein, an upper case formed integrally with the upper case of the lower case, and having a mode extractor for extracting air heat-exchanged from the heat exchanger for each mode; It is installed between the partitions, and one side has a case having a separating wall formed with an air mixing passage is formed in communication with the upper and lower cases to guide the heat exchanged air to the mode extraction unit.

Description

Air conditioner for vehicle

1 is a side view of a vehicle air conditioner according to an embodiment of the present invention, showing a cooling state,

Figure 2 is a side view of a vehicle air conditioner according to an embodiment of the present invention, a view showing a heating state,

Figure 3 is a side view of a vehicle air conditioner according to an embodiment of the present invention, a view showing a mixed state,

4 is an enlarged perspective view of a part of the vehicle air conditioner of FIG. 1;

5 is a side view of a typical vehicle air conditioner.

<Description of reference numerals for main parts of the drawings>

1 ... case 2 ... evaporator

3 ... heater core 4 ... main tempdoor

5 ... Second Temper Door 6 ... Bent Door

7.Defrost door 10 ... Main passage

11 ... Dividing wall 20 ... Branch passage

30. Bypass passage 40 ... Heat exchanger

50 ... Air mixing passage 60 ... Mode outlet

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner, and more particularly, to a vehicle air conditioner having a smaller size and improved mixing performance of cold air and hot air.

In general, the vehicle is provided with an air conditioner for heating or cooling the inside and outside air to enter or circulate the inside of the vehicle, thereby maintaining the indoor temperature at an appropriate state and giving a passenger a comfortable ride. The air conditioner includes a case provided with a plurality of air passages therein, a blower installed at one side of the case to blow air into and out of the case, an evaporator 2 for cooling the introduced air, and air. It is basically provided with a heater core for heating.

In addition, there are several types of air conditioners, and among them, an air conditioner in which the evaporator 2 and the heater core are arranged almost horizontally, and an air conditioner in which the evaporator 2 and the heater core are arranged vertically are typical. to be.

5 illustrates a conventional air conditioner.

Referring to the drawings, air passing through the evaporator 2 and the heater core 3 installed in the case 1 is discharged through the vent outlet 16, the defrost outlet 17, and the floor outlet 18. In the heating state in which the temporal door 4 completely opens the passage in which the heater core 3 is located, hot air passing through the heater core 3 is discharged to each outlet. In the cooling state in which the temporal door 4 completely blocks a passage in which the heater core 3 is located, cold air passing through the evaporator 2 is discharged to each outlet. In the mixed state of cold air and hot air, the temporal door 4 blocks only a part of the passage where the heater core 3 is located, so that hot air and cold air are mixed.

However, such an air conditioner has a problem that it is difficult to control the amount of cold and hot air is mixed and to secure a space of a mixing portion of a suitable size, it is difficult to miniaturize the air conditioner. This is contrary to the trend of recent miniaturization of the air conditioner mounted in the vehicle in order to use the space of the vehicle efficiently.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described aspects, and an object thereof is to provide a vehicle air conditioner that realizes compactness of a case so that a space occupied by the air conditioner in a vehicle is small.

Another object of the present invention is to provide a vehicle air conditioner in which the mixing performance of cold air and hot air is maximized.

Vehicle air conditioner of the present invention for achieving the above object,

An evaporator to cool the air;

A heater core installed to be spaced apart from the evaporator by a predetermined interval and heating air;

A lower case having a heat exchanger provided with the evaporator, a heater core, and a main temporal door disposed between the evaporator and the heater core to adjust the air volume of the air;                     

An upper case which is integrally installed to communicate with an upper portion of the lower case, and has a mode extracting unit for extracting air heat-exchanged from the heat exchange unit for each mode;

It is installed between the upper and lower cases and partitions, and one side has a case having a separating wall formed with an air mixing passage is formed in communication with the upper and lower cases to guide the heat exchanged air to the mode extraction portion; It is done.

In addition, a branch passage is formed in the lower case between the evaporator and the heater core, and a bypass passage is formed on one side of the heater core in parallel with the branch passage, and the branch and the bypass passage are rotated by the main tempor. It can be selectively opened and closed.

Further, the rear of the heater core is characterized in that the secondary temporal door is further installed to block the heat generated therefrom, and to mix the air cooled by the evaporator with the air heated by the heater core.

Hereinafter, with reference to the accompanying drawings will be described in detail a vehicle air conditioner according to a preferred embodiment of the present invention.

1 to 4 are cross-sectional views of a vehicle air conditioner according to an embodiment of the present invention.

Referring to the drawings, an automotive vehicle air conditioner is basically provided with a case (1), an evaporator (2), and a heater core (3). The case 1 is partitioned into upper and lower case cases 1a and 1b which are integrated by a separating wall 11 provided at the center side. An air inlet 9 is provided in the lower case 1b. The air introduced through the air inlet 9 is changed in direction and flows to the upper case 1a.

The upper case 1a is provided with a mode extractor 60 for extracting heat-exchanged air for each mode. That is, a vent outlet 16 for supplying air in the direction of the vehicle interior is formed at the right side of the upper case 1a, and air is supplied in the glass window direction at the left side of the vent outlet 16 to remove the frost. A defrost outlet 17 is provided for this purpose. On the left side of the upper case 1a, a floor outlet 18 for supplying air downward is provided. The floor outlet 18 is formed on the side of the case 1, thereby discharging air to the side, and the floor duct extends below the vehicle interior. In addition, a discharge port 19 for discharging the condensed water generated by the evaporator 2 to be described later is formed at the right side of the lower case 1b. That is, the condensed water generated by the evaporator 2 is collected on the inner lower surface of the case 1 and can be smoothly discharged through the outlet 19.

Meanwhile, a plurality of passages are provided in the case 1. That is, the main passage 10 communicates with the air inlet 9, and the main passage 10 is divided behind the main passage 10 based on the flow direction of the inflowed air so that the branch passage 20 is separated from the main passage 10. Bypass passage 30 is formed. In addition, the air flows through the branch passage 20 and the bypass passage 30 formed in parallel with the branch passage 20 to the rear of the heater core 3, the mode extracting portion of the upper case 1a ( An air mixing passage 50 is formed to guide 60. The air mixing passage 50 is formed at a portion where the upper and lower cases 1a and 1b communicate with one side of the separation wall 11 to guide the heat exchanged air to the U-turn. 1 to 4 disclose that the branch passage 20, the bypass passage 30, and the air mixing passage 50 are formed on the right side of the main passage 10.

A blower (not shown) is provided on the side of the air inlet 9 to forcibly supply air to the interior of the vehicle, and the main passage 10 is sequentially based on a flow direction of air introduced from the air inlet 9. An evaporator 2 is provided on the top, and a heater core 3 is provided on the branch passage 20. The heater core 3 is installed spaced apart from the evaporator 2 by a predetermined interval.

The evaporator 2 is used for heat exchange of air at a low temperature, and is provided over the main passage 10 in the case 1 so as to be perpendicular to the flow direction of the air. When the evaporator 2 is inclined at a predetermined angle as described above, the condensed water attached to the evaporator 2 can smoothly flow downward, and the condensed water can be prevented from splashing.

The heater core 3 is located at the rear (right side in FIG. 1) of the evaporator 2 with respect to the flow direction of air. The heater core 3 is used for heat-exchanging the air at a high temperature. Is provided on the branch passage (20). When the heater core 3 is installed to face the evaporator 2 as described above, the air flowing into the heater core 3 can pass smoothly, and the space in the left and right directions can be saved. . A bypass passage 30 is formed at a lower portion of the branch passage 20 in which the heater core 3 is installed. The bypass passage 30 is a passage through which air bypasses and passes through the heater core 3. to be.

A main temp door 4 is provided between the evaporator 2 and the heater core 3. The main temp door 4 is rotatably installed in the evaporator 2 to selectively open and close the branch passage 20 and the bypass passage 30. Therefore, the inlet of the branch passage 20 and the bypass passage 30 can be selectively or partially opened and closed, so that the flow direction of the air flowing into the branch passage 20 and the bypass passage 30 and the amount of air flow. You can control it.

As such, the lower case 1b is installed to be rotatable between the evaporator 2, the heater core 3, the evaporator 2, and the heater core 3 so that the branch and the bypass passage 20 are provided. The heat exchange part 40 which consists of the main temper door 4 which adjusts the air volume of the air which flows into the 30 is formed.

At the rear of the heater core 3, the auxiliary temper door 5 is installed to be rotatable. The auxiliary temper door 5 blocks the heat generated in the heater core 3, and the air cooled by the evaporator 2 is heated by the heater core 3 via the bypass passage 30. Mix with

The auxiliary temporal door 5 is operated in conjunction with the main temporal door 4. That is, the position of the auxiliary temporal door 5 may be determined as follows according to the position of the main temporal door 4. When the main temp door 4 is in a position to completely block the branch passage 20, the auxiliary temp door 5 completely blocks the outlet side of the branch passage 20 which is the rear of the heater core. Will be in. In addition, when the main temp door 4 is in a position to fully open the branch passage 20, the auxiliary temp door 5 completely exits the outlet side of the branch passage 20 which is the rear of the heater core. It is in the open position.

On the other hand, a vent door 6 is provided on the vent outlet 16 side, and a defrost door 7 is provided on the defrost outlet 17 side. The vent door 6 opens or closes the vent outlet 16 or supplies air flowing through the branch passage 20 or the bypass passage 30 to the defrost outlet 17 and the floor outlet 18. Or blocked. In addition, the defrost door 7 opens or closes the defrost outlet 17 or supplies or blocks the air flowing into the floor outlet 18.

Referring to the operation of the vehicle air conditioner according to an embodiment of the present invention having the configuration as described above are as follows.

In the present air conditioner, there are various operating states depending on the difference in mode, temperature, etc., but only representative ones will be described. In addition, the arrow shows the flow direction of air in a figure.

1 is a configuration diagram of an air conditioner in a floor mode and a cooling operation state.

Referring to the drawings, the main tempdoor 4 is positioned to completely block the inlet side of the branch passage 20. The auxiliary temporal door 5 is interlocked with the main temporal door 4 so as to completely block the outlet side of the branch passage 20. The vent door 6 and the defrost door 7 are selected in the floor mode by blocking the vent outlet 16 and the defrost outlet 17, respectively. In addition, the evaporator 2 is operated for indoor cooling.

In the state where the doors are positioned and the evaporator 2 is operated as described above, the air introduced through the air inlet 9 is cooled while passing through the evaporator 2 located on the main passage 10, and the bypass passage ( 30 is discharged to the floor outlet 18 via the air mixing passage 50.

2 shows a vehicle air conditioner in the floor mode and in a heated state.

Referring to the drawings, the main temp door 4 is positioned to completely block the inlet side of the bypass passage 30, the interlocking auxiliary temper door 5 completely opens the outlet side of the branch passage 20, It is positioned to completely block the exit side of the bypass passage (30). The vent door 6 and the defrost door 7 are selected in the floor mode by blocking the vent outlet 16 and the defrost outlet 17, respectively. The evaporator 2 is in a non-operated state.

In the state where the doors are positioned and the evaporator 2 is not operated as described above, the air introduced from the air inlet 9 passes through the evaporator 2 and flows into the open branch passage 20. The air introduced as described above is heated while passing through the heater core 3 and is discharged through the open outlet outlet 18 through the outlet side of the open branch passage 20 and the air mixing passage 50. .

3 shows a vehicle air conditioner in the floor mode and in a mixed state.                     

Referring to the drawings, once fitted in a mixed state, the main tempdoor 4 is positioned over the branch passage 20 and the bypass passage 30. That is, the inlet side of the branch passage 20 and the bypass passage 30 are partially opened. In addition, the auxiliary temporal door 5 partially opens the outlet side of the branch passage 20 in association with the main temporal door 4. The evaporator 2 is in operation.

Therefore, the air introduced through the air inlet 9 is cooled while passing through the main passage 10. The cooled air is distributed and partly passes through the branch passage 20 and is heated while passing through the heater core 3. The remainder of the cooled air flows into the bypass passage 30. Since the auxiliary temporal door 5 is partially opened, it is mixed with the heated air while passing through the branch passage 20 and the cooling air passing through the bypass passage 30. The mixed air is discharged to the floor outlet 18 via the air mixing passage 50.

That is, the auxiliary temporal door 5 installed at the rear of the heater core 3 blocks the heat generated from the heater core 3, and the cooling air and the heater core 3 flow into the bypass passage 30. Adjust to mix heated air. Therefore, since both the evaporator 2 and the heater core 3 of the air conditioner are installed in a small space, the space occupied by the air conditioner in the vehicle is reduced. In addition, since the cold and hot air is mixed in the bypass passage, a space for separate mixing is not required, thereby miniaturizing the air conditioner. In addition, it is possible to directly control the temperature of the air by adjusting the amount of air mixture by adjusting the auxiliary temporal door (5).

 As described above, the vehicle air conditioner according to the present invention changes the path of the cold air and changes the position of the mixing section where the cold air and the hot air are mixed, thereby making it possible to compact the case according to the arrangement of the heat exchanger and the door. do. Accordingly, there is an advantage of reducing the volume of the air conditioner occupying in the vehicle.

In addition, it is possible to adjust the amount of mixing of cold and hot air by opening and closing the auxiliary temporal door in the rear of the heater core has the advantage that the mixing performance of the air is maximized.

Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Could be. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (3)

An evaporator to cool the air; A heater core installed to be spaced apart from the evaporator by a predetermined interval and heating air; A lower case having a heat exchanger provided with the evaporator, a heater core, and a main temporal door disposed between the evaporator and the heater core to adjust the air volume of the air; An upper case which is integrally installed to communicate with an upper portion of the lower case, and has a mode extracting unit for extracting air heat-exchanged from the heat exchange unit for each mode; It is installed between the upper and lower cases and partitions, and one side has a case having a separating wall formed with an air mixing passage is formed in communication with the upper and lower cases to guide the heat exchanged air to the mode extraction portion; A vehicle air conditioner. The method of claim 1, A branch passage is formed between the evaporator and the heater core in the lower case, and a bypass passage is formed at one side of the heater core in parallel with the branch passage, and the branch and the bypass passage are selectively rotated by the rotation of the main temp door. Vehicle air conditioner, characterized in that the opening and closing. The method of claim 1, The rear of the heater core is a vehicle air conditioner, characterized in that to further block the heat generated therefrom, and to further mix the air cooled by the evaporator with the air heated by the heater core.

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