KR20180125687A - Air conditioner for vehicle - Google Patents

Abstract

Weight, and cost by reducing the number of doors, and reducing the package length in the front and rear direction of the vehicle. In addition, the air conditioner . An air conditioner for a vehicle, comprising: an air conditioning case having an air passage formed therein; a cooling heat exchanger provided in an air passage of the air conditioning case to exchange heat with air passing therethrough; and a heat exchanger for heating, A first temperature control door for controlling the passage opening degree of the flowing cold air; A second temperature control door for controlling the passage opening degree of the heated air flowing to the front or rear side of the vehicle; And a third temperature control door for controlling the passage opening degree of the cold air flowing to the back side of the vehicle.

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 a vehicle air conditioner, and more particularly, to a vehicle air conditioner capable of transmitting air conditioning air to a rear seat side in order to simultaneously perform front seat side air conditioning and vehicle rear air conditioning.

Generally, the air conditioner for a vehicle is installed in the interior of a vehicle installed for the purpose of cooling and heating the interior of the vehicle during the summer or winter season, or for securing the front and rear visibility of the driver by removing the windshield, to be. The air conditioner is usually equipped with a heating system and a cooling system at the same time so that the outside or inside air is selectively introduced to heat or cool the air and then air is blown into the inside of the vehicle to cool,

Korean Patent Laid-Open Publication No. 2015-0088577 (2015.08.03), which was filed in the same year, discloses a vehicle air conditioner that controls the position of a seated temperature control door, a seated assistant temperature control door, and a seated on- . 1 is a cross-sectional view showing a conventional automotive air conditioner. As shown in Fig. 1, the vehicle air conditioner includes an air conditioning case 10, an evaporator 20 and a heater core 30, an all-wheel temperature control door 51, and an all-omitting mode door.

The air conditioning case (10) has an air inlet (11) and an air outlet, and an air passage is formed therein. A blowing device is connected to the air inlet (11) side so that the inside air or the outside air selectively flows into the air passage inside the air conditioner case (10). The air outlet comprises a defrost vent 12, an all-over face vent 13, a floor vent 114, a top face vent 15, and a top floor vent 16. The air passage inside the air conditioner case 10 is constituted by an all-purpose cold air passage P1, a warm air passage P2 and a deep air passage P3.

The evaporator 20 is a cooling heat exchanger and cools the air passing through it. The heater core (30) is a heat exchanger for heating and heats the air passing therethrough. The heater core 30 is disposed in the hot air passage P2 which is the downstream side of the evaporator 20 in the air flow direction. An electric heater 40 such as a PTC heater may be further provided in the warm air passage P2. The front seat temperature regulating door 51 is disposed between the evaporator 20 and the heater core 30 and includes a warm air passage P2 for passing through the heater core 30 and a cold air passage P1 for bypassing the heater core 30. [ (P3). The all-purpose mode door is composed of a defrost door 53, a vent door 54 and a floor door 55.

The overturned air passage is composed of a chilled air passage P3 through which the air passed through the evaporator 20 bypasses the heater core 30 and a warm air passage passing through the heater core 30. [ The warm air passage of this back air passage is used together with the warm air passage (P2) of the oval air passage. That is, a part of the air flowing through the heater core 30 and flowing through the hot air passage P2 is moved upward and discharged to at least one of the defrost vent 12, the overturning face vent 13, and the floor vent 114 , And the other portion of the air moves downward and is discharged to at least one of the backing face vent 15 and the backing floor vent 16. And a seam mode door 58 for controlling the opening of the seam face vent 15 and the seam floor vent 16 is provided in the seam air duct.

In the air conditioning case 10, there are provided a seat temperature control door 52, a seat assist temperature control door 56, and an on-off door 57. The grate temperature control door 52 is provided between the evaporator 20 and the heater core 30 to regulate the opening of the passage to the warm air passage P2 and the passage to the gravel passage P3, The temperature control door 56 is disposed on the downstream side of the heater core 30 in the air flow direction to regulate the opening degree of the passage to the after-air outlet. The on-off-off door 57 adjusts the opening degree of the deep cold air passage P3.

Fig. 2 shows a front and rear cooling mode of a conventional automotive air conditioner. 2, in the forward / backward stall cooling mode, the all-round temperature control door 51 closes the hot air passage P2 and opens the all-round cold air passage P1, and the trailing air temperature control door 52 opens the hot air passage P2 And closes the fine cold air passage P3. The rear auxiliary temperature control door 56 closes the passage to the upright air discharge port, and the rear on-off door 57 opens the upright cold air passage P3. The cooled air passing through the evaporator 20 bypasses the heater core 30, a part of which is discharged to at least one of the air discharge openings through the entire air passage P1 and the other part is discharged through the open air passage P3 And is discharged to at least one of the back air discharge ports.

3 shows a front and rear heating mode of a conventional automotive air conditioner. 3, the front seat temperature control door 51 closes the all-round cold air passage P1 and opens the hot air passage P2, and the rear seat temperature control door 52 opens the back air passage P3 are closed and the warm air passage P2 is opened. The rear auxiliary temperature control door 56 opens a passage for flowing into the upright air discharge port and the rear on-off door 57 closes the upright cold air passage P3. The air that has passed through the evaporator 20 is heated while passing through the heater core 30, and then some of the air is discharged to at least one of the air discharge openings of the full course and the other part is discharged to at least one of the air discharge openings .

The conventional automotive air conditioner includes four doors composed of an all-steel temperature control door 51, a rear temperature control door 52, a rear auxiliary temperature control door 56 and a rear on-off door 57, Lt; / RTI > The temperature of the heater core 30 is controlled by adjusting the amount of air inflow to the heater core 30 according to the rotation angle of the all-wheel temperature control door 51.

The front seat temperature control door 51 is made larger than the doors having relatively different turning radii to control the opening of most of the passages flowing into the heater core 30. This causes a problem that the discharge air amount varies greatly according to the rotation angle of the all-round temperature control door 51, and it is difficult to control the inflow amount of the air flowing to the heater core 30. In addition, when the overhead temperature control door 52 closes the entire air cool passage P3, the back-on-off door 57 becomes unnecessary due to its loss of function. In addition, there is a problem that the package length of the air conditioner increases in the front-rear direction of the vehicle as the turning radius of the front seat temperature control door increases.

Patent Document 1: Korean Published Patent Application No. 2015-0088577 (2015.08.03)

In order to solve such conventional problems, the present invention provides a vehicle air conditioner capable of precisely controlling the amount of air flowing into the heater core, stably controlling the temperature and air volume, and reducing the package length in the vehicle longitudinal direction .

The vehicle air conditioner according to the present invention includes an air conditioner case having an air passage formed therein, and a cooling heat exchanger and a heating heat exchanger provided in the air passage of the air conditioner case for exchanging heat with air passing through the air passage, A first temperature control door for controlling a passage opening degree of the cold air flowing to the front seat side of the vehicle; A second temperature control door for controlling the passage opening degree of the heated air flowing to the front or rear side of the vehicle; And a third temperature control door for controlling the passage opening degree of the cold air flowing to the back side of the vehicle.

The vehicle air conditioning apparatus according to the present invention can precisely control the amount of air flowing into the heater core to stably control the temperature and the air volume and to reduce the package length in the front and rear direction of the vehicle and reduce the bending section of the warm air passage, It is advantageous to secure.

1 is a sectional view showing a conventional automotive air conditioner,
Fig. 2 shows the front and rear cooling mode of the conventional automotive air conditioner,
Fig. 3 shows the front and rear heating mode of the conventional automotive air conditioner,
4 is a cross-sectional view illustrating a vehicle air conditioning system according to an embodiment of the present invention,
FIG. 5 illustrates a front and rear cooling mode of a vehicle air conditioner according to an embodiment of the present invention,
FIG. 6 illustrates a front and rear heating mode of a vehicle air conditioner according to an embodiment of the present invention.

Hereinafter, the technical configuration of the air conditioner for a vehicle will be described in detail with reference to the accompanying drawings.

4 is a cross-sectional view illustrating a vehicle air conditioning system according to an embodiment of the present invention.

4, the vehicle air conditioner according to an embodiment of the present invention includes an air conditioner case 110 having an air passage formed therein, and an air passage provided in the air conditioner case 110, A cooling heat exchanger and a heating heat exchanger.

The air conditioning case 110 has an air inlet 111 and an air outlet, and an air passage is formed therein. A blowing device is connected to the air inlet 111 side so that the inside air or the outside air selectively flows into the air passage inside the air conditioner case 110. The air discharge port is composed of an air discharge port for all-purpose air consisting of a defrost vent 112, an all-over face vent 113 and an all-over floor vent 114, and a top air outlet for the top face vent 115 and the bottom floor vent 116 do. The air passage inside the air conditioner case 110 is constituted by an all-round cold air passage P1, a warm air passage P2 and a deep cold air passage P3.

The cooling heat exchanger is composed of an evaporator (120). The refrigerant flowing inside the evaporator 120 and the air passing through the evaporator 120 are heat-exchanged to cool the air. The heating heat exchanger is composed of a heater core (130). The cooling water flowing in the heater core 130 and the air passing through the heater core 130 are heat-exchanged to heat the air. The heater core 130 is disposed in the warm air passage P2, which is the downstream side of the evaporator 120 in the air flow direction. An electric heater 140 such as a PTC heater may be further provided in the warm air passage P2.

The air conditioning case (110) is provided with an air discharge port for discharging air to the side of the car charger, and the opening of the air discharge port is controlled by the all-purpose mode door. The all-over mode door includes a defrost door 153 for controlling the opening of the defrost vent 112, a vent door 154 for controlling the opening of the oval face vent 113, And a floor door 155. The air conditioning case 110 is provided with a rear air outlet for discharging air to the rear side of the vehicle, and the rear air outlet is controlled by the rear door mode door 158.

The vehicle air conditioner includes a first temperature control door 171, a second temperature control door 172, and a third temperature control door 173. The first temperature control door 171 controls the passage opening degree of the cold air flowing toward the vehicle front seat side. The second temperature control door 172 controls the passage opening degree of the heated air flowing to the front or rear side of the vehicle. The third temperature control door 173 controls the opening degree of the cold air flowing toward the rear side of the vehicle.

The air passage in the air conditioning case 110 is composed of an all-around cool air passage P1, a deep air passage P3, and a warm air passage P2. The all-round cold air passage P1 is a passage through which the air that has passed through the evaporator 120 bypasses the heater core 130 and flows to the front seat side of the vehicle. The chilled cold air passage P3 is a passage through which the air that has passed through the evaporator 120 bypasses the heater core 130 and flows toward the back side of the vehicle. The hot air passage P2 is a passage through which the air having passed through the evaporator 120 passes through the heater core 130 and flows to the front or rear side of the vehicle.

The first temperature regulating door 171 regulates the opening degree of only the all-round cold air passage P1. That is, the first temperature control door 171 is provided at the entrance of the all-round cold air passage P1. In this case, the inlet of the all-round cool air passage P1 means a boundary portion where the entire air cool air passage P1 and the warm air passage P2 are separated as a downstream portion adjacent to the evaporator 120 in the air flow direction. The first temperature control door 171 covers the entire inlet of the all-round cool air passage P1 to regulate the opening of the passage. The first temperature control door 171 is of a tail door type having a plate member on both sides with respect to a rotation axis which is a drive shaft.

The first temperature control door 171 closes the entirety of the cold air passage P1 and the tail portion between the warm air passage P2 and the all-cold air passage P1. In this case, the air that has passed through the evaporator 120 bypasses the heater core 130 and flows to the pre-discharge air discharge port through the all-round cold air passage P1. In addition, the first temperature control door 171 opens between the warm air passage P2 and the all-purpose cold air passage P1 in a state where the all-round cold air passage P1 is closed. In this case, the air that has passed through the evaporator 120 passes through the heater core 130 through the warm air passage P2, and flows to the air discharge port for the entire course. The first temperature control door 171 performs only the on / off function of the all-round cold air passage P1.

The second temperature control door 172 adjusts the opening degree of a part of the warm air passage P2. That is, the second temperature control door 172 is provided at the entrance of the warm air passage P2. In this case, the inlet of the warm air passage P1 is between the downstream portion of the evaporator 120 and the upstream portion of the heater core 130 in the air flow direction, and means the adjacent front end of the heater core 130. The second temperature control door 172 covers an upper part of the inlet of the warm air passage P2 to regulate the opening of the passage. The second temperature regulating door 172 is formed as a tail door type having a plate member on both sides with respect to a rotation shaft as a drive shaft. The second temperature regulating door 172 regulates only the opening degree of a part of the warm air passage P2.

The third temperature control door 173 regulates the opening of the other part of the warm air passage P2 and the opening of the fine cold air passage P3. That is, the third temperature control door 173 is provided at the entrance of the warm air passage P2 and the entrance of the cold air passage P3. In this case, the inlet of the warm air passage P1 is between the downstream portion of the evaporator 120 and the upstream portion of the heater core 130 in the air flow direction, and means the adjacent front end of the heater core 130. In addition, the inlet of the backward cold air passage P3 is a downstream portion adjacent to the evaporator 120 in the air flow direction, and indicates a boundary portion where the warm air passage P2 and the backward air passage P3 are separated from each other.

The third temperature control door 173 covers a part of the lower part of the inlet of the warm air passage P2 to adjust the opening degree of the passage and covers the entire inlet of the fine cold air passage P3, . The third temperature control door 173 opens the upright cold air passage P3 in a state in which a part of the hot air passage P2 is closed. In this case, the air that has passed through the evaporator 120 bypasses the heater core 130 and flows to the back air discharge port through the backward cold air passage P3. In addition, the third temperature control door 173 closes the fine cold air passage P3 with a part of the hot air passage P2 opened. In this case, the air that has passed through the evaporator 120 passes through the heater core 130 and flows to the overhead air discharge port through the warm air passage P2.

The drive shaft of the first temperature regulating door 171 is located above the heater core 130. In addition, the driving axes of the second temperature control door 172 and the third temperature control door 173 are positioned within the upper and lower widths of the heater core 130. Therefore, the turning radius of the door is reduced, and the package length of the air conditioner in the front-rear direction of the vehicle can be reduced.

The auxiliary seating temperature control door 174 is further provided inside the air conditioning case 110. The rear auxiliary temperature control door 174 adjusts the opening degree between the downstream side warm air passage P2 and the back side cold air passage P3 of the heater core 130 in the air flow direction. That is, the rear auxiliary temperature control door 174 is disposed at a boundary portion between the downstream side warm air passage P2 and the back side cold air passage P3 of the heater core 130 in the air flow direction.

When the rear auxiliary temperature control door 174 closes the space between the downstream side warm air passage P2 and the back side cold air passage P3 of the heater core 130 in the air flow direction, the warm air passage P2 and the back air passage P3 are partitioned, and the air that has passed through the evaporator 120 flows to the overflowing air discharge port through the backward cold air passage P3. When the rear auxiliary temperature control door 174 opens between the downstream side warm air passage P2 and the back side cold air passage P3 of the heater core 130 in the air flow direction after passing through the evaporator 120 The air that has passed through the heater core 130 flows into the back air passage P3 from the warm air passage P2 to the back air outlet.

The third temperature regulating door 173 regulates the opening degree between the upstream side warm air passage P2 and the back side cold air passage P3 of the heater core 130 in the air flow direction. When both the third temperature control door 173 and the auxiliary temperature control door 174 close the warm air passage P2, the air passing through the evaporator 120 is directly passed through the third temperature control door 173, To the front air outlet. That is, no other door is provided for the third temperature control door 173 and the back air passage P3 between the back air outlet.

The rear auxiliary temperature control door 174 assists the third temperature control door 173 to perform temperature control of the air conditioning air and performs the function of the rear door on / off door together with the third temperature control door 173 . With this configuration, the door open / close door described in the related art can be omitted, thereby reducing the number of doors.

The first temperature control door 171, the second temperature control door 172, and the third temperature control door 173 are arranged in the vertical direction. That is, the first temperature control door 171 is disposed on the upper portion of the second temperature control door 172 and the second temperature control door 172 is disposed on the upper portion of the third temperature control door 173.

FIG. 5 shows a front and rear cooling mode of a vehicle air conditioning system according to an embodiment of the present invention.

5, the first temperature control door 171 opens the all-round cold air passage P1 while the second temperature control door 172 and the third temperature control door 173 are opened in a warm air mode Closing the passage P2. In addition, the third temperature control door 173 opens the upright cold air passage P3. The cooled air passing through the evaporator 120 bypasses the heater core 130 and a part of the air passes through the entire air passage P1 and is discharged to at least one of the air discharge openings of the air chamber and the other part flows through the air passage P3 And is discharged to at least one of the back air discharge ports. In this case, the rear auxiliary temperature control door 174 closes the space between the downstream side warm air passage P2 and the back side cold air passage P3 of the heater core 130 in the air flow direction.

FIG. 6 illustrates a front and rear heating mode of a vehicle air conditioner according to an embodiment of the present invention.

6, the first temperature control door 171 closes the all-round cold air passage P1, and the second temperature control door 172 and the third temperature control door 173 are closed by the warm air Thereby opening the passage P2. In addition, the third temperature control door 173 closes the back cold air passage P3. The air that has passed through the evaporator 120 is heated while passing through the heater core 130, and then some of the air is discharged to at least one of the all-round air discharge openings, and the other part is moved to the bottom and discharged to at least one of the back air discharge openings . In this case, the rear auxiliary temperature control door 174 opens between the downstream side warm air passage P2 and the back side cold air passage P3 of the heater core 130 in the air flow direction.

The vehicle air conditioner according to the embodiment of the present invention comprises three doors for controlling temperature, one door for controlling only cold air and two doors for controlling only hot air, Thereby adjusting the opening degree of the passage. As a result, the turning radius of each door is reduced, and the package length of the air conditioner in the front-rear direction of the vehicle can be reduced.

Further, according to the present invention, it is possible to stably control the all-over seat and rear seat discharge temperature through the operation of the three temperature control doors through the inflow temperature and air flow rate control on the heater core side. In addition, since the three temperature control doors are arranged in the vertical direction, there is an advantage of the package in the arrangement of the heater core, and the flow path can be easily secured. In other words, the conventional rolling door temperature control door can be configured to have a smaller turning radius by the second temperature control door newly added to the lower portion thereof, and can be arranged so as to be higher than the existing position, As the bending section is reduced, securing the air volume is advantageous.

Although the vehicle air-conditioning apparatus according to the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

110: air conditioning case 111: air inlet
112: De-Frost Vents 113: Whole Face Face Vents
114: All floor floor vents 115: Facing face vents
116: top floor vent 120: evaporator
130: heater core 140: electric heater
153: Defrost door 154: Bent door
158: Barge mode door 171: First temperature control door
172: second temperature control door 173: third temperature control door
174: Auxiliary auxiliary temperature control door P1: All-purpose cold air passage
P2: Hot air passage P3: Hot air passage

Claims (10)

A cooling heat exchanger provided in the air passage of the air conditioner case and having a heat exchanger for exchanging heat with air passing through the air passage; and a heating heat exchanger,
A first temperature control door (171) for controlling the opening degree of the cold air flowing to the front seat side of the vehicle;
A second temperature control door (172) for controlling the passage opening degree of the heated air flowing to the front or rear side of the vehicle; And
And a third temperature control door (173) for controlling the opening degree of the cold air flowing to the back side of the vehicle. The method according to claim 1,
The air passage in the air conditioning case (110) is provided with an all-around cool air passage (P1), which is a passage through which the air that has passed through the cooling heat exchanger bypasses the heating heat exchanger and flows to the vehicle front seat side, A cold air passage P3 which is a passage through which the heat exchanger for a vehicle flows and which flows to the rear side of the vehicle and a hot air passage P2 which is a passage through which air passing through the cooling heat exchanger passes through the heating heat exchanger The air conditioning system comprising: The method according to claim 1,
Wherein the first temperature control door (171), the second temperature control door (172), and the third temperature control door (173) are arranged in parallel in the vertical direction. 3. The method of claim 2,
The first temperature control door (171) adjusts the opening degree of only the all-round cold air passage (P1). 3. The method of claim 2,
The second temperature control door (172) adjusts the opening degree of a part of the warm air passage (P2). 6. The method of claim 5,
The third temperature control door (173) regulates the opening of another part of the warm air passage (P2) and the open air passage (P3). 3. The method of claim 2,
(174) for adjusting the opening degree between the downstream side warm air passage (P2) and the back side cold air passage (P3) of the heating heat exchanger in the air flow direction. 8. The method of claim 7,
The third temperature control door 173 adjusts the opening degree between the upstream side warm air passage P2 and the back side cold air passage P3 of the heating heat exchanger in the air flow direction,
When both the third temperature control door 173 and the rear auxiliary temperature control door 174 close the warm air passage P2, the air passing through the cooling heat exchanger is only controlled by the third temperature control door 173 To the air outlet. The method according to claim 1,
And the drive shaft of the first temperature control door (171) is located above the heat exchanger for heating. The method according to claim 1,
And the drive shaft of the second temperature control door (172) and the third temperature control door (173) are located in the upper and lower widths of the heat exchanger for heating.

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