KR20140054917A - Air conditioner for vehicle - Google Patents

Abstract

The present invention relates to an air conditioner for a vehicle. More specifically, an auxiliary-mode door, other than a sliding type-mode door, is additionally installed so as to individually adjust the degree of opening for a defrosting vent. Therefore, the amount of wind discharged from the defrosting vent can be minutely adjusted, while enhancing the air conditioning performance by enabling an additional wind distribution for an air outlet, other than the mode-doors. A sealing improvement by a double-sealing of the defrosting vent can prevent the problem of generating frost when a leak occurs.

Description

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

BACKGROUND OF THE INVENTION 1. Field of the Invention 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 auxiliary mode door is provided separately from a sliding type mode door to separately control opening of a defrost vent.

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 shows an example of a conventional semi-center type air conditioner for a vehicle, wherein the illustration of the blower unit is omitted.

1 includes an air inlet 17 at one side and a defrost vent 11, a face vent 12, an air outlet at which the opening is controlled by the mode door 14, And an air conditioning case (10) having a floor vent (13) formed therein; An air blower (not shown) connected to the inlet side of the air conditioning case 10 to blow indoor air or outdoor air; An evaporator (2) and a heater core (3) embedded in the air conditioning case (10); 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 temperature control door 20 includes a sliding door 21 slidably installed in sliding grooves 16 formed on both inner sides of the air conditioning case 10 and having gear portions 21a formed on one side thereof, A gear portion 22a is formed to be rotatably coupled to a through hole (not shown) formed on both sides of the case 10 and to be engaged with the gear portion 21a of the sliding door 21, And a gear shaft 22 that operates.

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 meshes with the sliding door 14a.

The temperature control door 20 and the mode door 14 are connected to an actuator (not shown) provided on the outer surface of the air conditioner case 10 so as to be rotated, 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 (not shown) undergoes heat exchange with the refrigerant flowing in the interior of the evaporator 2 through the surface of the evaporator 2, And flows to the mixing chamber MC via the air outlet P1 to be opened by the mode door 14 according to the air discharge mode (vent mode, floor mode, defrost mode, bi-level mode, mix mode) The air is discharged to the vehicle interior through the vent, thereby cooling the interior of the vehicle.

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, .

The air conditioner 1 is connected to the one of the sliding type mode doors 14 for implementing various air discharging modes (vent mode, floor mode, defrost mode, bi-level mode and mixed mode) The sliding door 14a of the mode door 14 is rotated to a predetermined position for each of the air discharge modes so that the corresponding vent The air discharge mode is realized.

However, since the air conditioning apparatus 1 implements the air discharge mode predetermined by the one mode door 14, the discharge air volume of the specific vent among the vents can not be individually adjusted, and the predetermined air discharge port It is possible to improve the air conditioning performance by only controlling the air conditioning.

Also, there is a fear that air leakage may occur because the one mode door 14 is sealed.

In order to solve the above-described problems, an object of the present invention is to provide an auxiliary mode door separately from a sliding type mode door to individually adjust opening of a defrost vent, thereby finely adjusting the discharge air amount of the defrost vent The ventilation performance of the air discharge port can be adjusted separately from the mode door and the air conditioning performance can be improved and the problem of leakage can be solved due to the improved sealing performance due to the double sealing of the defrost vent. .

According to an aspect of the present invention, there is provided an air conditioner comprising: an air conditioning case having an air inlet formed on one side thereof and a plurality of air discharge openings formed on the other side thereof to discharge inflowed air; And a mode door configured to adjust the opening degree of the air outlet port according to the opening degree of the air outlet port in the air outlet port of the air outlet port, And an auxiliary mode door for controlling the auxiliary mode door.

In the present invention, an auxiliary mode door is provided separately from a sliding type mode door to independently adjust the opening degree of the defrost vent, so that the discharge air amount of the defrost vent can be finely adjusted, The air conditioning performance of the discharge port can be improved.

In addition, by sealing the defrost vent through the mode door and the auxiliary mode door, the sealing property of the defrost vent can be improved and the occurrence of leakage can be solved.

In the air discharge mode in which the defrost vent is opened, the defrost vent can be separately controlled by the auxiliary mode door.

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 an exploded perspective view showing a vehicle air conditioner according to the present invention,
4 is a partial perspective view showing the upper part of the air conditioner case in the vehicle air conditioner according to the present invention,
FIG. 5 is a perspective view showing a mode door in the automotive air conditioner according to the present invention,
6 is a perspective view showing an auxiliary mode door in the air conditioner for a vehicle according to the present invention,
FIG. 7 is a sectional view showing a portion where a mode door and an auxiliary mode door are installed in an air conditioning case of a vehicle air conditioner according to the present invention;
8 to 12 are views showing operating states of a mode door and an auxiliary mode door for each air discharge mode in a vehicle 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. The air passage 110c is formed on the air passage 110c in the air conditioner case 110, And a door installed on the air passage 110c in the air conditioner case 110. The air conditioner 110 includes an air passage 110c,

The door is installed on the air passage 110c between the evaporator 101 and the heater core 102 in the air conditioning case 110 and is provided with a cool air passage P1 for bypassing the heater core 102 And a plurality of air outlets 116 on the air passage 110c in the air conditioner case 110. The plurality of air outlets 116 are arranged on the air passage 110c in the air conditioner case 110, And a mode door 130 installed at a position where the plurality of air discharge openings 116 are branched to regulate opening of the plurality of air discharge openings 116.

The air conditioning case 110 is formed by assembling left and right cases 110a and 110b which are divided into left and right sides. The left and right cases 110a and 110b are integrally formed with a lower case 110d May be assembled.

The indoor air or the outside air is selectively introduced into the air inlet 111 of the air conditioning case 110 through an indoor air inlet opening (not shown) and an outdoor air inlet opening (not shown) An air blower 106 for blowing air is installed.

The air blowing device 106 includes a scroll case 107 connected to the air inlet 111 of the air conditioning case 110 and a scroll case 107 rotatably installed in the scroll case 107, A blower 108 for blowing air to the air inlet 111 side of the scroll case 107 and an intake duct 109 installed at one side of the scroll case 107 and having the inside and outside air inflow ports.

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, And floor vents 114 and 115 for discharging air toward the feet are formed.

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.

The floor vents 114 and 115 are branched into a front seat floor vent 114 for discharging air toward the foot of the occupant of the front seat and a floor vent 115 for the rear seat for discharging air toward the foot of the rear seat occupant .

On the other hand, a partition wall 117 is formed between the rear-side hot air passage P2 of the heater core 102 and the floor vents 114, 115, and is partitioned from each other.

The temperature control door 120 and the mode door 130 are connected to a driving means 170 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 115, respectively.

The mode door 130 is slidably installed at a position where the plurality of air outlets 116 in the air conditioning case 110 are branched and adjusts the opening degree of the plurality of air outlets 116 according to the sliding position. And a gear shaft 140 that is gear-engaged with the sliding member 150 in the air conditioning case 110 to operate the sliding member 150.

The gear shaft 140 is rotatably installed on both sides of the air conditioning case 110, and a gear portion 141 is formed at both ends of the gear shaft 140. At this time, the gear shaft 140 is rotatably coupled to both opposite sides of the inside of the air conditioner case 110 at the outer end of the gear unit 141.

The gear portion 141 of the gear shaft 140 is engaged with the gear groove 155a formed in the rail portion 155 of the sliding member 150 described later.

Here, the gear shaft 140 is disposed on the lower side of the face vent 113.

The slide member 150 is formed in a curved shape and is provided at both ends with a rail portion 155 so as to be slidably engaged with both sides of the air conditioner case 110. The rail portion 155 is provided with the gear shaft A plurality of gear grooves 155a are formed in the sliding direction of the sliding member 150 so as to engage with the gear portion 141 of the driving gear 140. [

The rail groove portion 118 is formed on both sides of the air conditioning case 110 facing the rail portion 155 of the sliding member 150 so as to slidably support the end portion of the rail portion 155.

The sliding member 150 is formed by injection molding with a plastic material, and it is preferable that the sliding member 150 is formed as thin as possible as long as it does not cause problems in operation and durability.

The opening 151 formed through the sliding member 150 controls the opening of the specific vent among the face vent 113, the floor vent 114 and the defrost vent 112, but the opening 151 ) Spans two vents, the two vents are opened.

Of course, when the sliding member 150 moves away from the defrosting vent 112, the defrosting vent 112 is opened.

An auxiliary mode door 160 is provided in one of the plurality of air discharging openings 116 to control the opening of the air discharging opening 116 separately from the mode door 130.

The auxiliary mode door 160 is rotatably installed inside the defrost vent 112 to separately control the opening of the defrost vent 112.

The auxiliary mode door 160 is installed downstream of the mode door 130 in the air flow direction in the air conditioning case 110. Referring to the drawings, the auxiliary mode door 160 is installed inside the defrost vent 112 and is installed on the upper side of the sliding member 150.

At this time, it is preferable that the auxiliary mode door 160 is installed so as not to interfere with the sliding member 150 when the opening of the defrost vent 112 is adjusted.

The auxiliary mode door 160 may be a flat type door.

That is, in the air conditioning case 110 to which the sliding type mode door 130 is applied, the defrost vent 112 is a separate flat type auxiliary mode door 160.

The auxiliary mode door 160 includes a rotation shaft 161 rotatably coupled to the inner surface of the defrost vent 112 and a plurality of protrusions 161 formed on both sides of the rotation axis 161, And a plate 162.

Of course, the auxiliary mode door 160 may adopt various doors in addition to the above structure.

As described above, in the present invention, the opening of the defrost vent 112, the face vent 113, and the floor vents 114 and 115 is controlled by the sliding type mode door 130 and the auxiliary mode door 160 The discharge air volume of the defrost vent 112 can be finely adjusted by individually adjusting the opening of the defrost vent 112.

That is, the air discharging mode includes five basic modes including a vent mode, a floor mode, a defrost mode, a bi-level mode, and a mix mode, and a vent mode for simultaneously opening the face vent 113 and the defrost vent 112 - De-frost mode and all modes to open all vents can be additionally configured,

Here, the auxiliary mode door 160 may be individually controlled in a mode in which the defrost vent 112 is fully or partially opened (a defrost mode, a floor mode, a mix mode, a vent-defrost mode, The amount of air discharged to the defrost vent 112 can be more finely adjusted. In other words, it is possible to control the passenger more finely according to his / her taste.

In addition, air conditioning performance of the air outlet 116 can be improved independently of the mode door 130 by controlling the airflow. That is, in the all-mode or vent-defrost mode, the defrost vent 112 can be individually controlled through the auxiliary mode door 160. In this case, The air volume on the side of the face vent 113 can be increased.

In other words, in the air discharge mode in which the defrost vent 112 is partially or entirely opened, a predetermined air volume is discharged through each air discharge port 116 as the mode door 130 rotates to a predetermined position, At this time, when the auxiliary mode door 160 is individually controlled, the air distribution between the defrost vent 112 and the relative vent can be controlled.

In addition, by venting the defrost vent 112 through the mode door 130 and the auxiliary mode door 160, the vent mode in which the defrost vent 112 is closed and the defrost vent 112 in the bi- Air leakage on the side of the vent 112 can be prevented and the sealing ability can be improved. As such, due to the improved sealing property of the defrost vent 112, the occurrence of leakage can be solved.

Meanwhile, when the windshield of the vehicle window is removed, the mode door 130 and the auxiliary mode door 160 simultaneously open the defrost vent 112.

The temperature control door 120 installed between the evaporator 101 and the heater core 102 is provided with a gear shaft 121 and a sliding member such as the sliding type mode door to reduce the size of the air conditioning apparatus 100. [ (122). That is, the temperature control door 120 includes a gear shaft 121 rotatably installed on both sides of the air conditioner case 110, and a gear shaft 121 that is engaged with the gear shaft 121, And a sliding member 122 for adjusting the opening degree of the cold air passage P1 and the warm air passage P2 while slidably moving the inside of the case 110 upward and downward.

Hereinafter, the respective air discharge modes of the vehicle air conditioning system according to the present invention will be described, and for convenience, the description will be made with reference to the cooling mode.

end. Bent mode

8, the sliding member 150 of the mode door 130 opens the face vent 113 through the opening 151 and closes the deprost vent 112 and the floor vents 114 and 115 do.

At this time, the auxiliary mode door 160 closes the defrost vent 112.

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

The cold air cooled through the evaporator 101 bypasses the heater core 102 by the temperature control door 120 and is discharged toward the passenger's face through the face vent 113.

I. Floor mode

9, the sliding member 150 of the mode door 130 opens the floor vents 114 and 115 through the opening 151 and closes the defrost vent 112 and the face vent 113 do. Of course, in the floor mode, the defrost vent 112 may be partially opened.

At this time, the auxiliary mode door 160 closes the defrost vent 112. When the mode door 130 partially opens the defrost vent 112, the auxiliary mode door 160 is also opened. A part of the frost vent 112 can be opened.

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

The cold air cooled through the evaporator 101 bypasses the heater core 102 by the temperature control door 120 and is discharged to the occupant's feet through the floor vents 114 and 115.

All. DeFrost mode

The sliding member 150 of the mode door 130 closes the face vent 113 and the floor vents 114 and 115 and opens the defrost vent 112 as shown in FIG.

At this time, the auxiliary mode door 160 also opens the defrost vent 112.

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

The cold air cooled through the evaporator 101 bypasses the heater core 102 by the temperature control door 120 and is then supplied to the windshield of the vehicle through the defrost vent 112, .

la. A bi-level mode, and a mix mode

11, the opening 154 of the sliding member 150 of the mode door 130 is positioned over the face vent 113 and the floor vents 114 and 115 so that the face vent 113 and the floor vents 114, 115 at the same time as the auxiliary mode door 160 closes the defrost vent 112.

12, the sliding member 150 of the mode door 130 partially opens the defrost vent 112 and partially exposes the floor vents 114 and 115 through the opening 151 .

In the mixed mode, the auxiliary mode door 160 partially opens the defrost vent 112. At this time, the auxiliary mode door 160 is separately controlled separately from the mode door 130, The amount of air blown into the defrost vent 112 can be finely adjusted by adjusting the opening degree of the frost vent 112 and the airflow between the defrost vent 112 and the floor vents 114 and 115 can be controlled in detail.

As described above, in the present invention, the auxiliary mode door 160 is installed inside the defrost vent 112 in the air conditioning case having the sliding type mode door 130 installed therein to open the defrost vent 112 The present invention is not limited to this. However, the present invention can be applied to various air conditioners such as a semi-center type air conditioner, a left and a right independent air conditioner, and the like, Effect can be obtained.

100: air conditioner 101: evaporator
102: heater core 106: blower
110: air conditioning case 110a: left case
110b: right case 110c:
110d: lower case 111: air inlet
112: Dipot Provent 113: Face Vent
114, 115: floor vent 116: air outlet
117: partition wall 118: rail groove
120: Temperature control door
130: Mode door 140: Gear shaft
141: gear portion 150: sliding member
160: auxiliary mode door 170: driving means

Claims (5)

An air conditioning case 110 having an air inlet 111 on one side and a plurality of air discharge holes 116 on the other side for discharging inflow air and an air conditioning case 110 slidably installed inside the air conditioning case 110, And a mode door (130) for adjusting the opening of the air outlet (116) according to the position of the air outlet (116)
An auxiliary mode door 160 is provided in any one of the plurality of air discharging holes 116 so as to control the opening of the air discharging opening 116 independently of the mode door 130 Automotive air conditioning system. The method according to claim 1,
The plurality of air discharging holes 116 are composed of a defrost vent 112, a face vent 113, and floor vents 114 and 115,
Wherein the auxiliary mode door (160) is rotatably installed inside the defrost vent (112) to individually adjust the opening of the defrost vent (112). The method according to claim 1,
Wherein the auxiliary mode door (160) is installed on the downstream side of the mode door (130) in the air flow direction in the air conditioning case (110). The method according to claim 1,
Wherein the auxiliary mode door (160) is made of a flat type door. The method according to claim 1,
The mode door (130)
A sliding member 150 slidably installed at a position where the plurality of air discharging holes 116 are branched in the air conditioning case 110 and having an opening 151 for adjusting the opening of the plurality of air discharging holes 116;
And a gear shaft (140) gear-engaged with the sliding member (150) in the air conditioning case (110) to operate the sliding member (150).

Images