KR20210047461A - Air conditioner for vehicle - Google Patents

Abstract

Disclosed is an air-conditioning apparatus for a vehicle having a scattering prevention drain structure to resolve a problem where condensate water produced from an evaporator is scattered to flow along a duct outlet-side wall of a lower case of an air-conditioning apparatus for a vehicle to gather water on the duct or is discharged by a wind pressure during a cooling operation in a structure in which a drain hole is formed on the lower case. According to the present invention, the air-conditioning apparatus for a vehicle comprises: an air-conditioning case having an air flow path formed therein to discharge air flowing into an air inlet to an air outlet; a blowing device (60) which uses a blowing fan (61) to blow air into the air-conditioning case (100); an evaporator installed on a flow path in the air-conditioning case to cool heat-exchanged air; and a drain hole formed on a lower case to discharge condensate water produced from the evaporator. The air outlet and the drain hole are formed on the same side of the air-conditioning case. A dividing wall for preventing the condensate water from flowing into the air outlet is formed. The drain hole for discharging the condensate water is formed on the air-conditioning case. A pocket unit is vertically installed on a sidewall of the air-conditioning case on which the air outlet is formed to guide the condensate water to the drain hole. The pocket unit has a drain path for guiding the condensate water scattered by the strong flow velocity of air to flow along a duct outlet-side wall of the lower case to the drain hole. A backflow prevention wall is additionally formed on the pocket unit to prevent the backflow of the condensate water by the wind pressure of air.

Description

Vehicle air conditioning system {AIR CONDITIONER FOR VEHICLE}

The present invention relates to an air conditioner for a vehicle, and more particularly, to an air conditioner for a vehicle having a condensed water scattering prevention drain structure for preventing scattering of condensate generated in an evaporator and smoothly discharging it to the outside of the vehicle.

In general, a vehicle air conditioner is a device for heating or cooling the vehicle interior by heating or cooling air in the process of introducing air outside the vehicle into the vehicle interior or circulating the air inside the vehicle. The evaporator for, a heater core for heating, and air cooled or heated by the evaporator or the heater core are selectively blown to each part of the vehicle interior using a door for switching a blowing mode.

1 is a cross-sectional view showing the interior of a conventional vehicle air conditioner.

As can be seen from FIG. 1, the illustrated vehicle air conditioning apparatus 1 includes an air conditioning case 10, a blower 30, an evaporator 2 and a heater core 3, a temp door 18, and a plurality of mode doors. It consists of (16, 17). The air inlet 11 is formed at the inlet side of the air conditioning case 10, and the defrost vent 12, face vent 13, and floor vent, which are air outlets whose openings are adjusted by mode doors 16 and 17, respectively, are formed at the outlet side. (14) is formed. In addition, the blowing device 30 is installed on the side of the air inlet 11 and includes a blowing fan 31.

In addition, the evaporator 2 and the heater core 3 are installed on the internal air passage of the air conditioning case 10, and the temp door 20 is a cold air passage F1 and a warm air passage F2 in the air conditioning case 10. The opening degree of is adjusted, and the mode door 16 adjusts the opening degree of the defrost vent 12, the face vent 13, and the floor vent 14 according to the air conditioning mode. In this case, the defrost vent 12 discharges air toward the windshield of the vehicle, the face vent 13 discharges air toward the face of the occupant, and the floor vent 14 discharges air toward the lower body of the occupant. The air conditioning case 10 is provided with a floor door 17 for adjusting the opening degree of the floor vent 14. A drain hole 19 for discharging the condensed water generated from the evaporator 2 is formed under the air conditioning case 10.

The vehicle air conditioner of FIG. 1 described above is a front air conditioner installed on the front seat side of the vehicle, and a drain hole 19 is formed on the downstream side of the evaporator 2 in the air flow direction. In this case, the condensed water generated in the evaporator 2 falls freely by its own load and is discharged through the drain hole 19, or falls by the flow of air and discharged to the drain hole 19 side. However, in the case of the rear air conditioner installed on the rear seat of the vehicle, the drain hole may be disposed on the upstream side of the evaporator in the air flow direction according to the design layout.

Meanwhile, referring to FIG. 2, in a conventional rear air conditioning apparatus, an evaporator 2 is disposed on an internal air flow path of an air conditioning case. The air (A) introduced into the air inlet of the air conditioning case passes through the evaporator 2, exchanges heat, and then is discharged to the interior of the rear side of the vehicle through the air outlet 30. The condensed water (W) generated in the evaporator falls to the lower portion of the air conditioning case and passes through the drain hose 22 through the drain hole 19 and is discharged to the outside. However, in the conventional rear air conditioner, some condensed water is frequently scattered to the inner wall of the case 10 at the front end of the discharge passage due to the strong internal flow velocity. When the mist scattered on the wall is collected and falls into the discharge passage due to gravity, the water that has flowed into the duct accumulates in the duct matching unit 21 and causes an unpleasant odor, or is discharged by the blower wind pressure during air conditioning and air conditioning. There was a problem.

In order to solve such a conventional problem, the present invention provides an air conditioner for a vehicle for improving the abnormal drainage phenomenon of condensate scattered by a strong flow velocity inside the rear air conditioner only.

The air conditioning apparatus for a vehicle according to the present invention blows air into the air conditioning case 100 by using an air flow path formed therein so that the air introduced through the air inlet is discharged to the air outlet. Blower 60, an evaporator installed on the inner flow path of the air conditioning case to cool the heat exchanged air, and a drain hole for discharging condensed water generated from the evaporator is formed in the lower case, and the air discharge port and the drain hole It is formed on the same side of the air conditioning case, and a partition wall is formed to prevent the condensed water from flowing into the air outlet.

In the above, the air outlet is formed in the lower case, and the partition wall is integrally formed in the lower case.

In the above, the partition wall is formed higher than the lowermost end of the evaporator and lower than the central portion of the evaporator to prevent condensed water from flowing into the air outlet.

In the above, a pocket part is provided that is vertically installed on a side wall of the air-conditioning case in which the air discharge port is formed, and guides the condensed water to the drain hole.

In the above, the pocket portion is formed by being continuously connected to the first sidewall and the second sidewall in contact with the air discharge port in the air conditioning case, and the groove formed in the pocket portion forms a drain path.

In the above, the drain path includes a first drain path provided on the first sidewall to form a pocket portion and a second drain path provided on the second sidewall to be connected to the first drain path and forming the pocket portion.

In the above, a third drain path connected to the drain hole is added to the air conditioning case to guide the condensed water to the drain hole.

In the above, the first drain path and the second drain path are connected at right angles.

In the above, the first drain path forms a first downward slope in the direction of a corner formed by the first sidewall and the second sidewall, the second drain path forms a second downward slope in the direction of the blower, and the third drain path Forms a third downward slope in the direction of the drain hole.

In the above, for guiding the condensate, the second drain path forms a second downward slope that is steeper than the first downward slope, and the third drain path forms a third downward slope that is steeper than the second downward slope.

In the above, at the end point of the second drain path where the second drain path and the third drain path are connected, a backflow prevention wall capable of preventing backflow of condensate due to the wind pressure of the air moved by a blower located opposite the pocket part. Is formed.

In the above, the backflow prevention wall is positioned so as to face the air blower, and is formed by joining two shielding walls at a right angle.

In the above, the bottom surface of the lower case forms a downward slope toward the drain hole so that condensed water guided to the drain hole through the third drain path does not flow to the other side of the lower case.

1 is a cross-sectional view showing the interior of a conventional vehicle air conditioner;
2 is a perspective view showing a lower portion of a conventional vehicle air conditioner in which air is discharged through a compressor;
3 is a perspective view showing a lower portion of an air conditioning case of an air conditioning apparatus for a vehicle according to an embodiment of the present invention;
FIG. 4 is a front view of the lower part of the air conditioning case of the vehicle air conditioning apparatus according to an embodiment of the present invention, viewed from above;
5 is a perspective view showing a lower portion of an air conditioning case of an air conditioning apparatus for a vehicle reflecting a pocket shape for improving a drainage phenomenon according to an embodiment of the present invention;
6 is a side perspective view showing a location where a partition wall is formed according to an embodiment of the present invention;
7 is an enlarged perspective view of a pocket portion according to an embodiment of the present invention;
8 is a front view of a pocket portion viewed from the front in a direction in which scattered water flows so that a concave water channel can be seen according to an embodiment of the present invention;
9 is a graph showing an inclination slope of a drain path according to an embodiment of the present invention.
10 is an enlarged perspective view of a backflow prevention wall according to an embodiment of the present invention;
11 is a perspective view showing a lower case according to an embodiment of the present invention.

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

3 is a perspective view showing a lower part of the air conditioning case of the vehicle air conditioning apparatus according to an embodiment of the present invention, and FIG. 4 is a front view of the lower part of the air conditioning case of the vehicle air conditioning apparatus according to an embodiment of the present invention viewed from above. 5 is a perspective view showing the lower part of the air conditioning case of the vehicle air conditioning apparatus reflecting the pocket shape for improving the drainage phenomenon according to an embodiment of the present invention, and FIG. 6 is a location where a partition wall is formed according to an embodiment of the present invention It is a side perspective view showing.

3 to 6, a vehicle air conditioning apparatus 200 according to an exemplary embodiment of the present invention is a rear air conditioning apparatus installed at the rear of the vehicle to perform air conditioning in the interior of the rear seat, and includes an air conditioning case 100 and a blower. 60) and an evaporator 150. An air flow path through which the air A introduced through the air inlet port is discharged to the discharge port 70 is formed in the air conditioning case 100, and an evaporator 150 is provided on the internal flow channel. The blowing device 60 functions to forcibly blow air (A) into the air conditioning case 100 by using the blowing fan 61. The evaporator 150 is installed on the inner flow path of the air conditioning case 100 to cool the heat-exchanged air (A).

A drain hole 80 is formed in the lower case 101 constituting the lower end of the air conditioning case 100. The discharge port 70 and the drain hole 80 are formed on the same side of the air conditioning case 100. The discharge port 70 may be formed in the lower case 101. The drain hole 80 functions to discharge condensed water W to the outside through the drain hose 81. The air (A) introduced through the blower 60 passes through the evaporator 150 and then is discharged to the discharge port 70. In this case, in general, the condensed water W formed through the evaporator 150 falls vertically and is discharged into the drain hole, but some of it is scattered by the internal strong flow rate and flows along the wall surface of the case 100 at the outlet side of the duct 71. The scattered condensed water (W) flowing along the wall is restricted from entering the discharge port 70 by the partition wall 86 installed on the side wall of the lower case 101 in contact with the discharge port 70. The partition wall 86 may be integrally formed in the lower case 101. In this case, if the height of the partition wall 86 is high, there is a problem that the amount of air discharged to the discharge port 70 is reduced by acting as a resistor with respect to the inflow air A facing each other. Therefore, the partition wall 86 must be formed lower than the center C of the evaporator 150.

In addition, if the height of the partition wall 86 is too low, the scattered condensate (W) crosses the partition wall 86 and is discharged to the discharge port 70, causing a problem that the condensate water (W) flows into the interior of the vehicle. The height of the wall 86 should be made higher than the minimum lowermost end. Accordingly, the scattered condensed water W flows into the drain hole 80 through the pocket portion 90 provided in the partition wall 86.

The air conditioning case 100 includes a first side wall 100a facing the blowing device 60 and a second side wall 100b connected thereto to form a corner. The pocket portion 90 is connected to the first side wall 100a and the second side wall 100b to form a flow path.

The pocket portion 90 is formed as a channel having a hollow shape in the center. Preferably, the pocket portion 90 may be formed perpendicular to the sidewall of the lower case 101. The water channel of the pocket portion 90 is formed with drain paths 82 and 83 to guide the scattered condensate water W to the drain hole 80. The drain paths 82 and 83 are formed to face the blower 60 and are connected to the first drain path 82 and the first side wall 100a provided on the first side wall 100a in contact with the discharge port 70 The second drain path 83 provided in the second side wall 100b in contact with the discharge port 70 is connected to each other.

In addition, a third drain path 84 connected to the second drain path 83 to form a flow path moving to the drain hole 80 may be added to the lower case 101. Preferably, each of the drain paths 82, 83, 84 may be connected at right angles.

7 is an enlarged perspective view of a pocket portion according to an embodiment of the present invention, and FIG. 8 is a front view of a pocket portion viewed from the front in a direction in which scattering water flows so that a hollow waterway according to an embodiment of the present invention can be seen. 9 is a graph showing the inclination of a drain path according to an embodiment of the present invention, and FIG. 10 is an enlarged perspective view of a backflow prevention wall according to an embodiment of the present invention.

7 to 10, the drain paths 82, 83, and 84 according to an embodiment of the present invention form a ramp. The first drain path 82 forms a first downward slope connected to the second drain path 83, and the second drain path 83 forms a second downward slope connected to the third drain path 84 In addition, the third drain path 84 forms a third downward slope connected to the drain hole 80. In particular, the second downward slope can form a steeper slope than the first downward slope, and the third downward slope can form a steeper slope than the second downward slope, thereby enabling more smooth guide of the condensate (W). .

As such, it is possible to smoothly guide the scattered condensate (W) formed in the evaporator 150 through the drain paths (82, 83, 84) to the lower direction where the drain hole 80 is formed, and at the same time, the drainage structure of the general condensate (W). Can be improved, and the scattered condensed water (W) is dropped to the discharge port 70 by gravity, it is possible to prevent the water retention phenomenon of the duct matching unit 72.

A backflow prevention wall 85 is formed at an end point of the second drain path 83 to which the second drain path 83 and the third drain path 84 are connected. A blower 60 is located opposite the pocket 90, so the air that has passed through the blowing fan 61 is directed to the discharge port 70, and at this time, the condensed water is also scattered to the wall of the lower case 101 and goes down through the wall. Flows. The condensed water (W) that flows down the wall and falls into the pocket portion (90) passes through the first drain path (82) and goes to the second drain path (83).

As can be seen from FIG. 3 previously installed, since the second drain path 83 is located facing the blowing device 60, the condensed water W flowing along the second drain path 83 is the blowing fan 61 ) Is affected by the air passing through it. A problem in which the condensed water W flows backward in the reverse direction, that is, in the direction of the side wall of the lower case 101 due to the fusion of the moving air, can be solved by installing the backflow prevention wall 85. Preferably, the backflow prevention wall 85 may be formed in a "L" shape by joining two shielding walls at a right angle. The backflow prevention wall 85 is located facing the blower 60 at the end of the second drain path 83 to which the second drain path 83 and the third drain path 84 are connected to It completely blocks the flow of air to the path 83 and the condensate (W) passing through it. Through this, the condensed water W does not flow backward in the reverse direction, but safely passes through the second drain path 83 and enters the third drain path 84 connected to the drain hole 80. In addition, the backflow prevention wall 85 and the drain paths 82, 83, and 84 can all be integrally formed during injection molding of the lower case 101 of the air conditioning case 100, so as not to increase the manufacturing cost.

Referring to FIG. 11, the third drain path 84 forms a downwardly inclined surface from the pocket portion 90 toward the drain hole 80 so that the condensed water W is guided along the inclined surface to the drain hole 80. Likewise, the bottom surface of the lower case 101 also allows the condensed water W that has fallen through the third drain path to not flow to the other side of the lower case 101 and allows the bottom surface to form the drain hole 80. It is formed to be inclined toward.

In this way, the condensed water (W) flowing into the drain hole 80 is finally discharged to the outside through the drain hose 81.

Comprehensively, while guiding the condensed water (W) scattered to the side wall of the lower case 101 through the pocket through the above process to the drain hole 80, the condensed water W falls to the discharge port 70 by gravity and matches the duct. It is possible to prevent in advance from accumulating in the unit 72, generating an unpleasant odor, or being discharged to the grill and the interior of the vehicle when the cooling and air conditioning mode is operated.

Until now, the vehicle air conditioning apparatus 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 technical scope of protection should be determined by the technical idea of the appended claims.

60: blower 61: blower fan
70: discharge port 71: duct
72: duct matching part
80: drain hole 81: drain hose
82: first drain pass 83: second drain pass
84: third drain pass 85: backflow prevention wall
86: partition wall 90: pocket portion
100: air conditioning case 100a: first side wall
100b: second side wall 101: lower case
102: floor vent 103: center vent
104: filter
150: evaporator 200: air conditioner
A: Air W: Condensate

Claims (13)

An air conditioning case with an air flow path formed therein so that the air introduced through the air inlet is discharged to the air outlet,
A blowing device 60 for blowing air into the air conditioning case 100 using a blowing fan 61,
An evaporator installed on the inner flow path of the air conditioning case to cool the heat exchanged air, and
In the vehicle air conditioner in which a drain hole for discharging the condensed water generated from the evaporator is formed in the lower case,
The air discharge port and the drain hole are formed on the same side of the air conditioning case,
A vehicle air conditioner, characterized in that a partition wall is formed to prevent the condensate from flowing into the air outlet. The method of claim 1,
The air outlet is formed in the lower case,
The partition wall is an air conditioner for a vehicle, characterized in that formed integrally with the lower case. The method of claim 1,
The partition wall is formed higher than the lowermost end of the evaporator and lower than the central portion of the evaporator to prevent condensed water from flowing into the air outlet. The method of claim 1,
And a pocket portion installed vertically on a side wall of the air conditioning case in which the air discharge port is formed and guides the condensed water to the drain hole. The method of claim 4,
The pocket portion is formed by being continuously connected to the first sidewall and the second sidewall in contact with the air outlet in the air conditioning case, and the groove formed in the pocket portion forms a drain path. The method of claim 5,
The drain path is provided on the first sidewall to form the pocket portion;
And a second drain path provided on the second sidewall, connected to the first drain path, and forming the pocket portion. The method of claim 4,
And a third drain path connected to the drain hole to guide the condensed water to the drain hole to the air conditioning case. The method of claim 6,
The first drain path and the second drain path are connected at a right angle. The method of claim 6,
The first drain path forms a first downward slope in a direction of a corner formed by the first side wall and a second side wall, and the second drain path forms a second downward slope in the direction of the blower, and the third drain The air conditioner for a vehicle, wherein the path forms a third downward slope in the direction of the drain hole. The method of claim 9,
To guide the condensate, the second drain path forms the second downward slope, which is steeper than the first downward slope, and the third drain path forms the third downward slope, which is steeper than the second downward slope. Vehicle air conditioning device, characterized in that. The method of claim 6,
At the end point of the second drain path where the second drain path and the third drain path are connected, it is possible to prevent backflow of the condensed water due to the wind pressure of the air moving by the blower located opposite the pocket part. An air conditioner for a vehicle, characterized in that the backflow prevention wall is formed. The method of claim 11,
The air conditioner for a vehicle, characterized in that the backflow prevention wall is positioned to face the air blower, and is formed by joining two shielding walls at a right angle. The method of claim 1,
The air conditioner for a vehicle, wherein the bottom surface of the lower case forms a downwardly inclined surface toward the drain hole so that the condensed water guided to the drain hole through the third drain path does not flow to the other side of the lower case.

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