KR20100065886A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE: A vehicle air-conditioner is provided to ensure the comfort of the indoor space of a vehicle by forming a floor flow-path at both sides of the hot air passage of the lower of a heater core to discharge air to a floor vent. CONSTITUTION: A vehicle air-conditioner comprises an air conditioning case(110), an evaporator, a heater core(102), and a temperature control door. The air conditioning case comprises an air inlet, a defrost vent(112), a face vent(113), and a floor vent(126). The temperature control door is installed between the evaporator and the heater core to control the opening degree of a hot air passage passing through the heater core and a cold air passage bypassing the heater core. A floor flow-path(120) for discharging air to the floor vent is formed at both sides of the hot air passage and a pair of mode doors(130) for controlling the floor flow-path are installed at the inlet of the floor flow-path.

Description

Automotive air conditioning unit {AIR CONDITIONER FOR VEHICLE}

The present invention relates to a vehicle air conditioner, and more specifically, by providing floor flow paths for discharging air to the floor vents on both sides of the hot air passage downstream of the heater core, the size of the air-conditioning case can be reduced in the front and rear directions. This relates to a vehicle air conditioner which can secure a vehicle interior space.

In general, the vehicle air conditioner is a vehicle interior that is installed for the purpose of securing the driver's front and rear view by removing the frost that is caught in the windshield during the rainy season or the winter, or by cooling or heating the interior of the car during the summer or winter season. In addition, such an air conditioner is generally equipped with a heating device and a cooling device at the same time to selectively introduce the outside air or bet, the air is heated or cooled and blown into the vehicle interior to cool, heat or ventilate the interior of the vehicle.

According to the independent structure of the blower unit, the evaporator unit, and the heater core unit, the air conditioner includes a three piece type in which the three units are independently provided, and an evaporator unit and the heater core unit in the air conditioning case. The semi-center type, which is built-in and the blower unit is provided as a separate unit, and the center mounting type, in which all three units are built in the air conditioning case, can be roughly classified.

FIG. 1 shows the semi-center type vehicle air conditioner. The air conditioner 1 has an air inlet 11 formed at an inlet side and an opening degree by mode doors 16a, 16b, 16c at the outlet side, respectively. An air conditioning case 10 in which the defrost vent 12a, the face vent 12b, and the floor vents 12c and 12d are adjusted; A blower (not shown) connected to the air inlet 11 of the air conditioning case 10 to blow the inside or outside air; An evaporator (2) and a heater core (3) embedded in the air conditioning case (10); The opening degree of the cold air passage P1 installed between the evaporator 2 and the heater core 3 and bypassing the heater core 3 and the hot air passage P2 passing through the heater core 3 is determined. It comprises a temperature control door 15 to adjust.

In addition, a floor flow path 18 is formed at a rear side of the downstream hot air passage P2 of the heater core 3 to discharge air to the floor vents 12c and 12d, wherein the floor flow path 18 and The warm air passages P2 are partitioned by the partition walls 17. In addition, the floor vents 12c and 12d branch into the front floor vent 12c and the rear floor vent 12d in the floor flow path 18.

According to the vehicle air conditioner 1 configured as described above, when the maximum cooling mode is operated, the temperature control door 15 opens the cold air passage P1 and closes the hot air passage P2. do. Accordingly, the air blown by the blower not shown is exchanged with the refrigerant flowing through the evaporator 2 while passing through the evaporator 2 to be changed into cold, and then the mixing area (P1) through the cold air passage (P1). And flows toward the MC), and is then ventilated through the vents opened by the mode doors 16a, 16b, and 16c according to a predetermined air conditioning mode (vent mode, bi-level mode, floor mode, mix mode, defrost mode). By being discharged to, cooling of the vehicle interior is performed.

In addition, when the maximum heating mode is activated, the temperature control door 15 closes the cold air passage P1 and opens the hot air passage P2. Accordingly, the air blown by the blower not shown is heat exchanged with the coolant flowing through the inside of the heater core 3 while passing through the heater core 3 through the hot air passage (P2) after passing through the evaporator (2) After changing to warmth, it flows toward the mixing area MC, and is then discharged into the vehicle interior through a vent opened by the mode doors 16a, 16b, and 16c according to a predetermined air conditioning mode, thereby heating the vehicle interior. .

In addition, when the cooling mode other than the maximum cooling mode, that is, 1/2 cooling mode is operated, the temperature control door 15 is rotated to a neutral position, the cooling air passage (P1) with respect to the mixing chamber (MC) And open all of the warm air passages (P2). Therefore, after the cool air passing through the evaporator 2 and the warm air passing through the heater core 3 are mixed by flowing toward the mixing region MC, the cold air is opened by the mode doors 16a, 16b, and 16c according to a predetermined air conditioning mode. The vent is discharged into the vehicle interior.

However, in the above-described conventional air conditioner 1, since the floor flow path 18 is formed at the rear side of the hot air passage P2 downstream of the heater core 3, the air conditioner 10 is moved forward and backward. There is a problem that the size is increased, thereby causing a problem that the interior space of the vehicle is narrow.

An object of the present invention for solving the above-mentioned problems is to reduce the size of the front and rear direction of the air conditioning case by providing a floor flow path for discharging air to the floor vent on both sides of the hot air passage downstream of the heater core. Therefore, to provide a vehicle air conditioning apparatus that can secure the interior space of the vehicle.

The present invention for achieving the above object, the air inlet is formed on the inlet side and the outlet side is formed with a defrost vent, face vent, floor vent, the evaporator and the heater core installed inside the air conditioning case, In the air conditioning apparatus for a vehicle provided between the evaporator and the heater core comprising a temperature control door for adjusting the opening degree of the cold air passage to bypass the heater core and the heater air passage, the warm air downstream of the heater core Floor passages for discharging air to the floor vents are provided at both sides of the passage, and a pair of mode doors are installed at the inlet side of the floor passage to open and close the floor passage.

According to the present invention, by providing floor flow paths for discharging air to the floor vents on both sides of the hot air passage downstream of the heater core, the size of the front and rear directions of the air conditioning case can be reduced, thereby securing a vehicle interior space.

In addition, the partition wall of the floor flow path facing the heater core is formed to surround the rear surface and the upper surface of the heater core to guide the warm air passing through the left and right end side area of the heater core toward the cold air passage side by Mixing with the cold air passing through is improved, thereby reducing the temperature difference between the upper and lower air discharged from the air conditioning case.

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

Repeated description of the same configuration and operation as in the prior art will be omitted.

Figure 2 is a perspective view showing a vehicle air conditioner according to the present invention, Figure 3 is a perspective view showing a state in which the door is assembled in the floor vent of the right case in the vehicle air conditioner according to the present invention, Figure 4 is 5 is a perspective view illustrating a right side case in a vehicle air conditioner, FIG. 5 is a cross-sectional view illustrating a floor mode of a vehicle air conditioner according to the present invention, and FIG. 6 is a cross-sectional view illustrating a face mode of the vehicle air conditioner according to the present invention.

As shown, the vehicle air conditioner 100 according to the present invention, the air inlet 111 is formed on the inlet side and the air-conditioning case 110 formed with a plurality of air outlets on the outlet side, the air conditioning case 110 inside The cold air passage (P1) installed between the evaporator 101 and the heater core 102 and the evaporator 101 and the heater core 102 and bypassing the heater core 102 installed on the air passage of the heater (P1). ) And a temperature control door 140 for adjusting the opening degree of the warm air passage (P2) passing through the heater core (102).

In addition, an air inlet 111 of the air conditioning case 110 is provided with a blower (not shown) for blowing inside or outside air.

The air conditioning case 110 is composed of three cases are assembled, that is, the left case (110a) and the right case (110b) is coupled, the lower case of the left and right cases (110a, 110b) integral lower case ( 110c) is combined.

The plurality of air discharge ports formed at the outlet side of the air conditioning case 110 may include a defrost vent 112 for discharging air toward the windshield of the vehicle and a face vent for discharging air toward the face of the front occupant. 113 and floor vents 126 and 127 for discharging air toward the foot of the occupant are formed.

In addition, the defrost vent 112, the face vent 113, and the floor vents 126 and 127 are opened and closed by mode doors 114, 115, and 130, respectively.

In addition, each of the vents is provided with a duct (not shown) to communicate with a specific part of the interior of the vehicle to discharge the air discharged through each of the vents to the center side of the vehicle interior and both left and right sides, respectively.

On the other hand, the temperature control door 140 and the mode doors (114, 115, 130) are driven directly through an actuator (not shown) installed on the outer surface of the air conditioning case 110 or a cam driven by an actuator ( The cooling and hot air passage (P1) (P2) and the opening degree of each of the vents are adjusted while being connected to the lever or the lever (not shown).

In addition, floor flow paths 120 for discharging air to the floor vents 126 and 127 are provided at both sides of the warm air passage P2 downstream of the heater core 102.

That is, although the floor flow path 18 is conventionally formed at the rear side of the warm air passage P2, in the present invention, the floor flow path 120 is formed at both sides of the warm air passage P2, that is, before the air conditioning case 110. The floor flow path 120 is formed at a position overlapping the warm air passage P2 in a rear direction (before and after the vehicle).

Therefore, the size of the front and rear directions of the air conditioning case 110 is reduced.

The floor flow path 120 is formed on both sides of the air conditioning case 110 to be recessed in a predetermined depth in the inward direction of the warm air passage P2, and is partitioned by the warm air passage P2 and the partition wall 121. Is formed.

In this case, the floor flow path 120 is recessed in the inward direction of the warm air passage P2, so that the floor flow passage 120 is in the left and right directions of the heater core 102 and the warm air passage P2 (left and right of the vehicle). Direction).

On the other hand, the floor flow path 120 is provided in the form of a duct on both sides of the warm air passage (P2) by the partition wall 121.

In addition, of the partition walls 121 that partition the floor flow path 120 from the warm air passage P2, the partition walls 121 facing the heater core 102 are formed to be spaced apart from the heater core 102 by a predetermined interval. In addition, the rear surface and the top surface of the heater core 102 is formed to be curved to guide a portion of the air passing through the heater core 102 to the cold air passage (P1) side.

That is, since the partition wall 121 facing the heater core 102 overlaps the left and right directions of the heater core 102, the heater core 102 during the warm air passing through the heater core 102. The hot air passing through the central region of the hot air is moved to the cold and hot air mixing zone MC through the hot air passage P2, and the warm air passing through the left and right end side regions of the heater core 102 is the partition wall ( It is guided by 121 and guided to the cold air passage (P1) side to improve the mixing properties of the cold air passing through the cold air passage (P1), thereby reducing the difference between the upper and lower temperatures of the air discharged from the air conditioning case (110). .

The closing plate 125 is coupled to both side surfaces of the air conditioning case 110 to close the side opening 122 of the floor flow path 120.

In addition, a floor vent 126 for supplying air toward the front occupant's foot is formed in the closing plate 125 to supply air moved into the floor passage 120 into the vehicle interior, and the floor passage 120 is provided. The rear floor vent 127 is provided on the rear surface of the air conditioning case 110 at a position corresponding to the air supply to the foot of the rear seat occupant.

In addition, a pair of mode doors 130 are installed at the inlet side of the floor flow path 120 provided on both sides of the warm air passage P2 to open and close the floor flow path 120. That is, the floor vent 126 and the rear floor vent 127 are opened and closed through the mode door 130 installed at the inlet side of the floor flow path 120.

The mode door 130 includes a rotation shaft 131 and plates 132 formed on both sides of the rotation shaft 131, and the pair of mode doors 130 configured as described above is the warm air passage. (P2) Open and close the inlets of the floor flow paths 120 provided on both sides, respectively.

At this time, the rotary shaft 131 of the pair of mode doors 130 are coupled to each other to be rotated at the same time. In addition, both ends of the rotation shaft 131 is rotatably coupled to the closing plate 125 coupled to both sides of the air conditioning case 110.

In addition, the temperature control door 140 is configured of a sliding type to reduce the size of the front and rear direction of the air conditioning case 110.

That is, the temperature door 140 is slidably installed on both side walls of the air conditioning case 110, and the sliding door 141 for adjusting the opening degree of the cold air passage (P1) and the warm air passage (P2), and the Is rotatably installed in the air conditioning case 110 is composed of a gear shaft 142 gear coupled to the sliding door 141.

The sliding door 141 is formed in an arc shape, and an arc-shaped sliding groove 116 is formed on both inner walls of the air conditioning case 110 to support the sliding door 141.

On the other hand, the gear shaft 142 and the sliding door 141 is geared in a rack and pinion manner. That is, a gear gear is formed on the side of the gear shaft 142 and a rack gear is formed on the side of the sliding door 141 to be coupled to each other.

Therefore, the opening of the cold air passage (P1) and the warm air passage (P2) while the sliding door 141, which is gear-coupled with the gear shaft 142 when the gear shaft 142 rotates, slides in the up and down directions. Will be adjusted.

Hereinafter, the operation of the vehicle air conditioner according to the present invention, but the temperature control door 140 opens both the cold air passage (P1) and the hot air passage (P2), the mode door (115, 130) is a floor Only the case where the vents 126 and 127 or the face vent 113 are opened will be described.

First, the cold air cooled in the process of passing through the evaporator 101 is branched by the temperature control door 140, and a part of the cold air passes through the cold wind passage P1 in a cold wind state and then moves to the mixing region MC. , Part is heated by the heater core 102 to pass through the hot air passage (P2) in a state changed to warm air.

At this time, the warm air passing through the central region of the heater core 102 of the warm air passing through the heater core 102 moves to the mixing region MC through the hot air passage P2, and the left side of the heater core 102 The warm air passing through the right end side region is guided by the partition wall 121 of the floor flow path 120 and guided to the cold air passage P1 to be mixed with the cold air passing through the cold air passage P1 first. The mixing area MC is moved.

Thereafter, the cold and warm air moved to the mixing area MC are mixed with each other, and when the floor flow path 120 and the floor vents 126 and 127 are opened in the floor mode as shown in FIG. When the face vent 113 is in the open face mode as illustrated in FIG. 6, the face vent 113 is supplied into the vehicle interior through the face vent 113.

At this time, some of the air moved to the floor passage 120 is supplied to the front occupant's foot through the floor vent 126, and a part of the air flows to the rear occupant's foot through the rear floor vent 127.

As described above, the present invention provides floor flow paths 120 on both sides of the warm air passage P2 downstream of the heater core 102, thereby reducing the size of the air conditioning case 110 in the front and rear directions. The vehicle interior space can be secured.

As described above, in the present invention, only the case where the configuration having the floor passage 120 on both sides of the hot air passage P2 downstream of the heater core 102 is applied to the semi-center type air conditioner has been described. Instead, it can be applied to all air-conditioning devices such as center mounting type air conditioner, three-piece type air conditioner, left and right independent air conditioner in the same way, and the same effect can be obtained.

1 is a cross-sectional view showing a conventional vehicle air conditioner,

Figure 2 is a perspective view showing a vehicle air conditioner according to the present invention,

3 is a perspective view illustrating a state in which a mode door is assembled to a floor vent of a right case in a vehicle air conditioner according to the present invention;

Figure 4 is a perspective view showing a right case in the vehicle air conditioner according to the present invention,

5 is a cross-sectional view showing a floor mode of the vehicle air conditioner according to the present invention;

6 is a cross-sectional view showing a face mode of the vehicle air conditioner according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: air conditioner 101: evaporator

102: heater core 110: air conditioning case

111: air inlet 112: defrost vent

113: face vent 114,115,130: mod door

116: sliding groove 120: floor flow path

121: partition wall 125: closing plate

126: floor vent 127: rear floor vent

131: axis of rotation 132: plate

140: temperature control door 141: sliding door

142: gear shaft

Claims (5)

An air inlet 111 is formed at the inlet side and the air conditioning case 110 having the defrost vent 112, the face vent 113, the floor vent 126, 127 formed at the outlet side, An evaporator 101 and a heater core 102 installed in the air conditioning case 110; A temperature installed between the evaporator 101 and the heater core 102 to adjust the opening degree of the cold air passage P1 bypassing the heater core 102 and the warm air passage P2 passing through the heater core 102. In the vehicle air conditioner comprising an adjustment door 140, Floor flow paths 120 for discharging air to the floor vents 126 and 127 are provided at both sides of the warm air passage P2 downstream of the heater core 102, Vehicle air conditioning apparatus, characterized in that a pair of the mode door 130 is installed on the inlet side of the floor flow path 120 to open and close the floor flow path (120). The method of claim 1, The floor flow path 120 is formed to be recessed in the inward direction of the warm air passage (P2) on both side surfaces of the air conditioning case 110, and is partitioned by the warm air passage (P2) and the partition wall 121. Vehicle air conditioning system. The method of claim 2, The closing plate 125 is coupled to both sides of the air conditioning case 110 to close the side opening 122 of the floor flow path 120, and the air in the floor flow path 120 is connected to the closing plate 125. The floor vent 126 is formed to discharge the vehicle air conditioner. The method of claim 2, The partition wall 121 facing the heater core 102 is formed to be spaced apart from the heater core 102 by a predetermined interval, and is formed in a shape to surround the rear and top surfaces of the heater core 102 and the heater core 102. Vehicle air conditioning apparatus, characterized in that for guiding a portion of the air passing through the cold air passage (P1) side. The method of claim 1, The temperature control door 140, Sliding door 141 is installed to be slidable on both side walls of the air conditioning case 110 to adjust the opening degree of the cold air passage (P1) and the warm air passage (P2), The air conditioning apparatus for a vehicle, characterized in that consisting of a gear shaft (142) rotatably installed in the air conditioning case (110) is coupled to the sliding door (141).

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