KR20140073752A - Air conditioner for vehicle - Google Patents

Abstract

The present invention relates to an air conditioning apparatus for a vehicle. More specifically, the air conditioning apparatus for a vehicle has an evaporator and a heater core installed in an inclining direction while facing each other in an air conditioning case on which a sliding type temperature adjustment core is installed, thereby increasing the size of the space between the evaporator and the heater core in the air conditioning case of a limited size, increasing the intensity of the wind passing through due to an increased size of cold/heated wind path, and reducing the noise due to decreased air resistance and smoother air flow.

Description

TECHNICAL FIELD [0001] The present invention relates to an air conditioner for an automobile,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an air conditioner for a vehicle, and more particularly, to an air conditioner for an automotive air conditioner in which an evaporator and a heater core are inclined in a direction facing each other in an air conditioner case in which a sliding type temperature control door is installed.

The air conditioning system for a vehicle includes a cooling system for cooling the interior of the vehicle and a heating system for heating the interior of the vehicle.

In the cooling system, by the heat exchange between the refrigerant circulated to the compressor again through the condenser, the receiver dryer, the expansion valve, and the evaporator by the compressor, and the blowing air passing through the evaporator surface by the blower, And is discharged to the inside of the vehicle, thereby cooling the inside of the vehicle.

Further, the heating system is configured to heat the vehicle interior by introducing the cooling water into the heater core and exchanging heat with the blower.

Such a vehicle air conditioner can be largely divided into three types.

One example is a three piece type air conditioner in which a blower unit, an evaporator unit, and a heater unit are each composed of separate units. In the case of this air conditioner, As a result, not only the utilization of the interior space of the vehicle is lowered but also the productivity is lowered.

Accordingly, in order to increase the efficiency of the vehicle interior space, there has been a demand for miniaturization of the vehicle air conditioner. In response to this demand, recently, an air conditioner of a semi-center mounting type in which an evaporator unit and a heater unit are integrated The application of a center mounting type air conditioner having an integrated blower unit, an evaporator unit, and a heater unit is increasing.

FIG. 1 is a view showing a conventional air conditioning apparatus for a center mounting type vehicle. The vehicle air conditioning apparatus 1 includes a defrost vent 11, a face vent 11, 12 and a floor vent 13 are formed; An evaporator (2) and a heater core (3) installed on the air passage in the air conditioning case (10) and spaced apart from each other by a predetermined distance; And a temperature control door 20 for regulating the opening of the cold air passage P1 for bypassing the heater core 3 and the warm air passage P2 for passing through the heater core 3. [

The evaporator 2 and the heater core 3 are normally installed vertically on the air passage in the air conditioning case 10.

The temperature control door 20 includes a sliding door 21 slidably installed on both sides of the inside of the air conditioner case 10 and rotatable through holes (not shown) formed on both sides of the air conditioner case 10 And a gear shaft 22 which is engaged with the sliding door 21 to operate the sliding door 21.

The mode door 14 has a structure similar to that of the temperature control door 20. Briefly, the mode door 14 includes a sliding door 14a slidably coupled to both inner sides of the air conditioner case 10, And a gear shaft 14b that is rotatably installed on both inner sides of the air conditioning case 10 to operate the sliding door 14a and is gear-engaged with the sliding door 14a.

The temperature control door 20 and the mode door 14 are connected to driving means such as an actuator (not shown) provided on the outer surface of the air conditioner case 10, Thereby opening or closing the vents 11 to 13, respectively.

According to the vehicle air conditioner 1 configured as described above, when the maximum cooling mode is activated, the temperature control door 20 opens the cold air passage P1 and closes the warm air passage P2. In addition, when the maximum heating mode is activated, the temperature control door 20 closes the cold air passage P1 and opens the warm air passage P2.

Therefore, when the maximum cooling mode is activated, the air blown by the blower 30 is heat-exchanged with the refrigerant flowing in the inside of the evaporator 2 through the surface of the evaporator 2, Flows into the mixing chamber (MC) through the passage P1 and is opened by the mode door 14 in accordance with the air discharge mode (vent mode, floor mode, defrost mode, bi-level mode, And the air is discharged to the vehicle interior through the vent.

When the maximum heating mode is activated, the blowing air is heat-exchanged with the cooling water flowing in the heater core 3 through the heater core 3 through the hot air passage P2, MC, and is discharged to the inside of the vehicle through a vent opened by the mode door 14 according to the air discharge mode, thereby heating the interior of the vehicle.

On the other hand, when the mixing mode is activated, the temperature control door 20 is rotated to the neutral position to open both the cold air passage P1 and the hot air passage P2. Therefore, the cold air passing through the evaporator 2 and the hot air passing through the heater core 3 flow into the mixing chamber MC and are mixed with each other through the vent opened by the mode door 14 in accordance with the air discharge mode, .

However, in the conventional air conditioner, at least one or both of the evaporator 2 and the heater core 3 are installed vertically on the air passage in the air conditioning case 10 in the air conditioning case 10 of a limited size, There is a problem that the space between the evaporator 2 and the heater core 3 is small and the size of the cold and warm air paths P1 and P2 is limited and air volume is small and air resistance is increased to increase noise.

Further, as the evaporator 2 is arranged vertically, there is a problem that the noise is further increased as the air flow rapidly changes when the air blown from the air blowing device 30 passes through the evaporator 2.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide an evaporator and a heater core in an air conditioner case having a sliding type temperature control door, wherein the evaporator and the heater core are inclined in directions facing each other, And the size of the cold and warm air passages is increased to increase the air volume, reduce the air resistance by reducing the noise, and smooth the air flow, thereby further reducing noise. .

According to an aspect of the present invention, there is provided an air conditioner comprising: an air conditioner case having an air inlet formed on one side thereof and a plurality of air discharge ports formed on the other side thereof to discharge inflowed air; And a temperature control door slidably installed in the air conditioning case between the evaporator and the heater core to control the opening degree of the hot air passage for passing through the heater core and the cold air passage for bypassing the heater core, Wherein the evaporator and the heater core are inclined in a direction facing each other on the air passage in the air conditioning case so as to increase the air passage between the evaporator and the heater core.

In the present invention, the evaporator and the heater core are inclined in the direction facing each other in the air conditioner case in which the sliding type temperature control door is installed, and the temperature control door is also inclined in the same direction as the heater core, The space between the evaporator and the heater core can be increased, and in particular, the space on the rear side of the evaporator (the air passage) and the space on the inlet side of the heater core (the warm air passage) are increased to increase the air volume, The resistance is also reduced and the noise can be reduced.

In addition, since the evaporator is inclined toward the heater core, the flow direction of the air passing through the inside of the evaporator is similar to the flow direction of the air flowing from the blower to the evaporator, so that the flow of air is smooth, Noise can be further reduced.

1 is a sectional view showing a conventional automotive air conditioner,
2 is a perspective view showing a vehicle air conditioner according to the present invention,
3 is a cross-sectional view showing an arrangement structure of an evaporator and a heater core in a vehicle air conditioner according to the present invention,
4 is a view showing an operating state of a temperature control door in a cooling mode in a vehicle air conditioner according to the present invention,
5 is a view showing an operating state of a temperature control door in a heating mode in a vehicle air conditioner according to the present invention,
6 is a view showing an operating state of the temperature control door in the mixing mode in the automotive air conditioner according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in the figure, the air conditioning system 100 according to the present invention includes an air inlet 111 formed at one side (inlet side) and a plurality of air discharge holes 116 (at the outlet side) for discharging inflow air. And an air passage 110c connecting the air inlet 111 and the air outlet 116 to each other is formed in the inside of the air conditioner case 110 and an air passage 110c formed in the air passage 110c inside the air conditioner case 110 A temperature control door 120 and a mode door 130 installed inside the air conditioner case 110. The temperature control door 120 and the mode door 130 are installed at a predetermined distance from each other.

The temperature control door 120 includes a cool air passage P1 slidably installed in the air conditioning case 110 between the evaporator 101 and the heater core 102 to bypass the heater core 102, The mode door 130 is provided on the side of the air outlet 116 in the air conditioner case 110 so as to control the opening degree of the air outlet P2, (116).

Here, the cold air passage P1 is formed on the air passage 110c connecting the air outlet 116 from the downstream of the evaporator 101, and the hot air passage P2 is communicated from the cold air passage P1 And then is branched into the heater core 102 and joined to the cool air passage P1 again.

At this time, the temperature control door 120 is installed between the evaporator 101 and the heater core 102 at a position where the cold air passage P1 and the hot air passage P2 are branched, and the cold air passage P1, P2).

In addition, the air conditioning case 110 is formed by assembling left and right cases 110a and 110b, which are divided left and right. Meanwhile, an integrated lower case 110d is assembled to the lower portions of the left and right cases 110a and 110b so as to smoothly discharge the condensed water of the evaporator 101. [

An air blowing device 106 is installed on the side of the air inlet 111 of the air conditioning case 110.

The air blowing device 106 includes a scroll case 107 connected to the air inlet 111 of the air conditioner case 110 and a scroll case 107 installed inside the scroll case 107, And an air blowing fan 108 for blowing air into the inside of the scroll case 107. The air blowing fan 108 is installed at one side of the scroll case 107 and opens and closes the inside and outside air inflow ports through an inside and outside air switching door And an intake duct 109 for introducing the air.

The scroll case 107 is provided between the air outlet 116 and the evaporator 101. More specifically, the scroll case 107 is provided between the defrost vent 112 and the face vent 113 of the air outlet 116 And is disposed between the evaporator (101).

Here, the scroll case 107 is formed in a scroll shape counterclockwise from the upper portion of the evaporator 101.

Therefore, the air blowing device 106 selectively introduces the inside air or the outside air through the intake duct 109, and blows air into the air conditioning case 110.

In the center mounting type air conditioner according to the present invention, the scroll case 107 of the air blowing device 106 is disposed on the center (center) side of the vehicle together with the air conditioning case 110.

The plurality of air discharge ports 116 may include a defrost vent 112 for discharging air toward the windshield of the vehicle, a face vent 113 for discharging air toward the face of the occupant of the front seat, A floor vent 114 for discharging air toward the foot is formed.

Here, the defrost vent 112, the face vent 113, and the floor vent 114 are sequentially formed along the sliding direction of the mode door 130, which will be described later.

The face vent 113 is divided into a center vent 113a and a side vent 113b. That is, the center vent 113a is provided with a center vent 113a for discharging air to the center of the vehicle interior. Side vent 113b is formed on both sides of the center vent 113a to discharge air to both sides of the vehicle interior. At this time, the center vent 113a and the side vent 113b are partitioned by a plurality of partition walls.

On the other hand, a partition wall 117 is formed between the floor vent 114 and the rear-side hot air passage P2 of the heater core 102 and is partitioned from each other.

The temperature control door 120 and the mode door 130 are connected to driving means (not shown) such as an actuator or a cable type controller installed on the outer surface of the air conditioner case 110, (P1) (P2) and the openings of the vents 112 to 114 are controlled.

The mode door 130 includes a gear shaft 140 rotatably installed on both sides of the air conditioner case 110 and a gear shaft 140 engaging with the gear shaft 140 and sliding upon rotation of the gear shaft 140, And a sliding member 150 for adjusting the opening degree of the air discharge port 116.

At this time, the sliding member 150 of the mode door 130 is formed as a curved surface and an opening 155 is formed for controlling the opening of the air discharge opening 116.

The temperature control door 120 also includes a gear shaft 121 and a sliding member 125.

The sliding member 125 is slidably installed in the air conditioning case 110 between the evaporator 101 and the heater core 102 to adjust the opening degree of the cold air passage P1 and the warm air passage P2 .

The sliding member 125 is formed in a flat plate shape and has an area capable of closing the cold air passage P1 or the hot air passage P2. At this time, both end portions of the sliding member 125 are slidably installed on both sides of the air conditioner case 110 in the vehicle width direction.

In addition, sliding grooves 118 are formed on both sides of the air conditioning case 110 so as to slidably support both ends of the sliding member 125.

A gear groove (not shown) is formed at both ends of the sliding member 125 so as to be engaged with the gear portion 122 of the gear shaft 121 so that the gear groove is engaged with the sliding direction of the sliding member 125 Respectively.

The gear shaft 121 is rotatably installed on both sides of the air conditioning case 110 and has gear portions 122 formed at both ends thereof for gear engagement with the gear groove of the sliding member 125. At this time, the gear shaft 121 is rotatably coupled to both opposite sides of the inside of the air conditioner case 110 from the outer end of the gear part 122.

In addition, one end of the gear shaft 121 penetrates through the side surface of the air conditioning case 110 and is exposed to the outside, and is connected to the driving means (not shown).

In addition, a partition wall 160 is formed in the air conditioning case 110 to partition the cold air passage P1 and the warm air passage P2.

One end of the partition wall 160 supports the upper portion of the heater core 102 and the other end faces the rear surface of the sliding member 125.

In the case of the air conditioner case 110, it is difficult to increase the internal space (air passage) of the air conditioner case 110 due to the limitation of the installation space when the air conditioner case 110 is installed on the vehicle side.

Therefore, in the present invention, the evaporator 101 and the heater core 102 are installed in the air conditioning case 110 of a limited size so that the space between the evaporator 101 and the heater core 102 can be increased. And are inclined in a direction facing each other on the air passage 110c in the case 110. [

At this time, the evaporator 101 and the heater core 102 are slanted so that the space between the evaporator 101 and the heater core 102 becomes a triangular shape A.

The horizontal distance (horizontal distance) between the lower end of the heater core 102 and the evaporator 101 is larger than the horizontal distance between the upper end of the heater core 102 and the evaporator 101 101 (horizontal distance) between the horizontal spacing.

The temperature control door 120 is inclined toward the evaporator 101 so as to increase the cold air passage P1 and the warm air passage P2.

That is, the sliding member 125 of the temperature control door 120 is also inclined in a direction in which the heater core 102 is inclined. When the temperature control door 120 is in the cold air passage P1 and the warm air passage P2, The cross sectional area of the passage of the cold air passage P1 and the hot air passage P2 is increased to increase the air flow rate.

Since the evaporator 101 and the heater core 102 are inclined in the direction facing each other and the temperature control door 120 is inclined in the same direction as the heater core 102, It is possible to increase the space between the evaporator 101 and the heater core 102 in the evaporator 101 and to increase the space between the rear side space of the evaporator 101 and the inlet side space of the heater core 102 The passage P2 is increased to increase the air volume and increase the space, so that the air resistance is reduced and the noise can be reduced.

Since the evaporator 101 is inclined toward the heater core 102, the direction of the air passing through the inside of the evaporator 101 and the direction of air flowing from the air blower 106 to the evaporator 101 The flow direction of the air becomes similar so that the flow of air becomes smooth, thereby further reducing the noise.

Hereinafter, the cooling mode, the heating mode, and the mixing mode of the vehicle air conditioner according to the present invention will be described. For convenience, the air discharge mode will be described with reference to the face mode.

end. Cooling mode

In the cooling mode, as shown in FIG. 4, the sliding member 125 opens the cold air passage P1 and closes the hot air passage P2 by the rotation operation of the gear shaft 121. As shown in FIG.

Therefore, air blown by the air blowing device 106 is changed into cool air while passing through the evaporator 101,

The cold air passing through the evaporator 101 bypasses the heater core 102 while passing through the cold air passage P1 opened by the temperature control door 120 and is then opened by the mode door 130. [ And is discharged to the inside of the car through the face vent 113 to cool the inside of the car.

I. Heating mode

In the heating mode, as shown in FIG. 5, the sliding member 125 closes the cold air passage P1 and opens the hot air passage P2 by the rotation operation of the gear shaft 121. As shown in FIG.

Therefore, the air blown by the air blowing device 106 passes through the evaporator 101, passes through the hot air passage P2 opened by the temperature control door 120, and flows to the heater core 102 And then discharged into the passenger compartment through the face vent 113 opened by the mode door 130 to heat the passenger compartment.

All. Mixing mode

In the mixing mode, as shown in FIG. 6, the sliding member 125 opens both the cold air passage P1 and the warm air passage P2 by the rotation of the gear shaft 121. As shown in FIG.

Therefore, the air blown by the air blowing device 106 flows through the evaporator 101 and then flows into the cold air passage P1 by the temperature control door 120, and part of the air flows through the hot air passage P2.

The air that has passed through the cold air passage P1 and the air that has passed through the heater core 102 while passing through the warm air passage P2 are mixed with each other in the mixing region MC and then mixed by the mode door 130 And is discharged to the inside of the car through the opened face vent 113 to adjust the temperature of the inside of the car to an appropriate temperature.

100: air conditioner 101: evaporator
102: heater core 106: blower
107: Scroll case
110: air conditioning case 110a: left case
110b: right case 110c:
111: air inlet
112: Dipot Provent 113: Face Vent
114: floor vent 116: air outlet
117: partition wall 118: sliding groove
120: Temperature control door 121: Gear shaft
122: gear portion 125: sliding member
130: Mode door 140: Gear shaft
150: sliding member 160: partition wall

Claims (4)

An air conditioning case 110 in which an air inlet 111 is formed at one side and a plurality of air discharging holes 116 are formed at the other side to discharge inflow air,
An evaporator 101 and a heater core 102 installed on the air passage 110c in the air conditioning case 110 at a predetermined distance from each other,
A cooling air passage P1 and a heater core 102 which are slidably installed in the air conditioning case 110 between the evaporator 101 and the heater core 102 to pass the heater core 102 to bypass the heater core 102, And a temperature control door (120) for controlling the opening degree of the warm air passage (P2), the air conditioner comprising:
The evaporator 101 and the heater core 102 are disposed on the air passage 110c in the air conditioning case 110 so as to increase the space between the evaporator 101 and the heater core 102 Wherein the airbag is installed in an inclined manner. The method according to claim 1,
Wherein the evaporator (101) and the heater core (102) are inclined so that the space between the evaporator (101) and the heater core (102) becomes a triangular shape (A). The method according to claim 1,
The horizontal interval between the lower end of the heater core 102 and the evaporator 101 is longer than the horizontal interval between the upper end of the heater core 102 and the evaporator 101 The air conditioning apparatus comprising: The method according to claim 1,
Wherein the temperature control door (120) is inclined toward the evaporator (101) so as to increase the cold air passage (P1) and the hot air passage (P2).

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