KR20090029881A - Car air conditioner - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner, and more particularly, to a vehicle air conditioner using two mode control doors for selectively passing cold and warm air to a defrost vent, a face vent, and a floor vent.

The present invention is a blower unit 20 for blowing the inside or outside air to the inside of the case 10, the evaporator unit 30 and the heater core unit 40 in turn disposed downstream of the air inlet passage (I), A temperature adjusting means disposed between the evaporator unit 30 and the heater core unit 40 to selectively pass the air flow rate to the cooling passage C or the heating passage H, and the cold air passing through the cooling passage C or In the vehicle air conditioner comprising a mode adjusting means for selectively passing the warm air passing through the heating passage (H) to the defrost vent (DV), the face vent (FV), the floor vent (FLV), the mode adjusting means is The main shaft is rotatably supported on the case 10 via the rotation shaft 74 and selectively opens and closes a passage of the floor vent FLV and a passage communicating with the defrost vent DV as the door rotates. One of the door member 72 and the main control member 72 It is characterized in that it comprises a floor 70 having an auxiliary door member (78) disposed in the passage to the passage of the floor vent (FLV) or the passage interlocked with the defrost vent (DV). .

Description

Air conditioner for vehicles {Air conditioner for vehicles}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner, and more particularly, to a vehicle air conditioner using two mode control doors for selectively passing cold and warm air to a defrost vent, a face vent, and a floor vent.

In general, the vehicle air conditioner selectively passes the outside air introduced into the cabin by the blower unit to the evaporator unit through which the refrigerant flows or the heater core unit through which the coolant of the vehicle engine flows. After the heat exchange, the air is cooled by distributing it in various directions in the cabin in a cold or warm state through Defrost Vent, Face Vent, and Floor Vent in communication with each part of the vehicle. Or to heat.

This air conditioning unit is composed of a blower unit, an evaporator unit, and a heater piece unit unit consisting of a three-piece type (pare piece typa), a blower unit and an evaporator unit all in one case. Semi-Center Mounting Type, which consists of three parts, and Blower Unit, Evaporator Unit and Heater Core Unit are divided into Center Mounting Type (Center Mounting Type).

As shown in FIG. 1, a conventional vehicle air conditioner includes a case 100, an evaporator 110 mounted at an air inlet 102, a heater core 120 disposed behind the evaporator 110, and The temperature control door 130 disposed between the evaporator 110 and the heater core 120 to selectively pass the air flow to the cooling passage (C) and the heating passage (H), defrost vent (DV), face vent And first, second and third mode control doors 140, 142 and 144 for selectively passing cold or warm air with FV and floor vent FLV. And, it includes a blower (not shown) installed at the inlet of the case 100.

Here, according to the operation of the temperature control door 130 and the first, second, third mode control doors (140, 142, 144), it is switched to the vent mode, bi-level mode, floor mode, mix mode and defrost mode.

However, the conventional vehicle air conditioner requires three or more mode control doors 140, 142, and 144 to switch to the vent mode, the bi-level mode, the floor mode, the mix mode, and the defrost mode. These mode control doors (140, 142, 144) are limited to downsize the case 100 and lighten the entire apparatus because parts such as arms, levers, cams, etc. are required.

In addition, since the parts, such as the arm, lever, cam, etc. must be continuously researched and developed whenever the specification of the vehicle changes with respect to the mode control doors 140, 142, and 144, the cost of parts development is increased, There was a time-consuming problem.

On the other hand, when the structure of the mode control doors (140, 142, 144) is simplified in order to downsize the case 100 and lighten the air conditioning apparatus, technical difficulties arise in uniformly distributing the air volume supplied to each vent when a specific mode is implemented. It became.

Accordingly, an object of the present invention is to provide a vehicle air conditioner that can smoothly distribute the air volume in each mode while simplifying the mode control door.

Another object of the present invention is to provide a vehicle air conditioner that can reduce the number of parts, such as arms, levers, cams, etc. in accordance with the reduction of the number of the mode control door to save parts development costs, miniaturizing the case and lighten the whole device. .

The present invention for achieving the above object, the blower unit for blowing the inside or outside air to the inside of the case, the evaporator unit and the heater core unit sequentially disposed downstream of the air inlet passage, the evaporator unit and the heater core unit Disposed between the temperature control means for selectively passing the air flow rate to the cooling passage or the heating passage, and selectively passing the cold air passing through the cooling passage or the warm air passing through the heating passage to the defrost vent, the face vent, and the floor vent. In the vehicle air conditioner comprising a mode adjusting means, the mode adjusting means is rotatably supported on the case via a rotating shaft, the passage of the floor vent and the passage communicating with the defrost vent as the door rotates A main gear member for selectively opening and closing, and the floor disposed on one side of the main gear member It characterized in that it comprises a floor door having an auxiliary door member for guiding the air supplied to the passage of the vent or the passage interlocked with the defrost vent.

The mode adjusting means may further include an upper door for blocking the defrost vent or the face vent to selectively pass the cold or warm air.

The main door member is composed of an outer door surface covering an upper portion and a side door surface extending from the outer peripheral door surface to cover the side surface, and the auxiliary door member is formed to extend along the line of the rotation shaft.

Here, the auxiliary door member is preferably configured to be disposed in the gap between the case and the main control member to guide the amount of air supplied to the defrost vent side in the floor mode.

The vehicle air conditioner according to the present invention simplifies the mode control door, that is, by using the rotary floor door and the upper door can easily adjust the air volume in the vent mode, bi-level mode, floor mode, mix mode and defrost mode, It is possible to smoothly distribute the air volume.

In addition, the vehicle air conditioner according to the present invention, the rotary floor door is less affected by the wind pressure can reduce the door operating force, in particular in the floor mode can be improved air mixing by the domed structure of the floor.

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

Figure 2 is a cross-sectional configuration of the air conditioning apparatus according to the present invention, Figure 3 is a perspective view showing a floor door of the air conditioning apparatus according to the present invention, Figures 4a and 4b shows a floor door of the air conditioning apparatus according to the present invention. One drawing.

As shown in FIG. 2, the air conditioner according to the present invention receives air from the inside of the case 10 and converts it into cold or warm air to defrost vent (DV), face vent (FV), and floor vent (FLV). A blower unit (20), an evaporator unit (30), a heater core unit (40), a temperature control means and a mode control means are provided for selectively discharging.

The blower unit 20 serves to blow outside air into the case 10, and the evaporator unit 30 and the heater core unit 40 serve to cool the outside air blown from the blower unit 20. And it serves to heat the outside air.

The temperature control means is a temperature control door 50 disposed between the evaporator unit 30 and the heater core unit 40. Here, the temperature control door 50 is rotatably supported by the rotation shaft 52 on the case 10 at one end, the outside air blown from the blower unit 20, cooling passage (C) or heating passage (H) ) Pass selectively.

The mode control means is composed of the upper door 60 and the floor door 70, the cold air passing through the cooling passage (C) or the warm air passing through the heating passage (H) defrost vent (DV), face vent (FV) and floor vent (FLV) are selectively passed.

As shown in FIG. 2, the upper door 60 has a structure in which a rotation shaft 62 is rotatably supported by the case 10 at one end thereof. Here, the upper door 60 is to block the defrost vent (DV) or the face vent (FV) as the rotating shaft 62 rotates.

Therefore, the upper door 60 blocks the defrost vent (DV) or the face vent (FV) to selectively pass the cold air passing through the cooling passage (C) or the warm air passing through the heating passage (H). Done.

As shown in FIGS. 2 and 3, the floor door 70 selectively selects a passage of the floor vent FLV and a passage communicating with the defrost vent DV as the door rotates clockwise or counterclockwise. The guide gear member 72 that opens and closes with the auxiliary guide member is disposed on one side of the control gear member 72 to guide the air supplied to a passage of the floor vent FLV or a passage interlocked with the defrost vent DV. The door member 78 is provided.

In addition, the floor door 70 is rotatably supported on the rotation shaft 74 mounted on the case 10, and a space part is formed between the main control member 72 and the auxiliary door member 78 to form cold air. Or hot air is made to pass.

Therefore, the floor door 70 has a main door member 72 having the outer circumferential surface 72a and the side door surface 72b to block the floor vent FLV when the rotation shaft 74 is rotated to the maximum in the clockwise direction. As a result, the air volume is not transmitted toward the floor vent FLV. In other cases, the air volume is transmitted between the main control member 72 and the auxiliary door member 78.

The main control member 72 includes an outer circumferential door surface 72a covering an upper portion and a side door surface 72b extending from the outer circumferential door surface 72a to cover a side surface thereof. In addition, a center rib 72c is formed along the center of the outer circumferential surface 72a and the side door surface 72b, and a plurality of reinforcement ribs 72d are disposed at regular intervals in a direction facing the central rib 72c. ) Is formed.

The flange portion 76 is formed along the lengths of both ends of the main gear member 72. As shown in FIG. 2, each of the flanges 76 is engaged with the stopper 12 extending from the case 10 as the rotation shaft 74 rotates clockwise or counterclockwise.

As shown in FIG. 5, the flange portion 76 has a sealing member 76a attached to the entire surface thereof. Here, the sealing member 76a serves to absorb noise when the sealing member 76a comes in contact with the stopper 12 of the case 10.

As shown in FIGS. 4A and 4B, the auxiliary door member 78 is extended and linearly formed on the rotation shaft 74, and reinforcing ribs 76a are formed on the surface at regular intervals. Here, the auxiliary door member 78 may be integrally formed with the rotation shaft 74 to be integrally formed with the main door member 72. In addition, the auxiliary door member 78 may be formed separately from the main control member 72 to be configured to rotate independently. When the auxiliary door member 78 is integrally formed with the main door member 72, it is preferable to install the auxiliary door member 78 in parallel with the outer circumferential door surface 72a.

The auxiliary door member 78 can be produced in a flat shape (FIG. 4A), and the tip portion can be manufactured in a round shape (FIG. 4B). As shown in FIG. 4B, the front end surface of the round auxiliary door member 78 is formed with a curved portion C having a predetermined radius R. As shown in FIG. Here, the round auxiliary door member 78 serves to smooth the flow of the wind direction without interference.

As a result, the auxiliary door member 78 is disposed in the gap between the case 10 and the main control member 72 to guide the amount of air supplied to the defrost vent DV in the floor mode toward the floor vent FV. It will play a role.

In this case, the auxiliary door member 78 may be configured to transmit approximately 85% of the air volume toward the floor vent FLV in the floor mode, and to transmit the remaining air volume toward the defrost vent DV.

On the other hand, the material of the floor door 70 is preferably a resin having a high mechanical strength and elasticity, such as polypropylene.

Hereinafter, the operation process for each mode of the vehicle air conditioner according to the present invention will be described with reference to FIGS. 2, 6A to 6E.

First, in the vent mode, as shown in FIG. 6A, the outside air introduced into the air inflow passage I from the blower unit 20 is blocked by the heating passage H through the temperature control door 50. It passes through the cooling passage (C) through 30). Cold air passing through the cooling passage (C) is taken out to the face vent (FV) by the floor door 70 blocking the floor vent (FLV) and the upper door 60 blocking the defrost vent (DV). .

Next, in the bi-level mode, as shown in FIG. 6B, the cooling passage C and the heating passage H are both opened through the temperature control door 50 to be introduced into the air inflow passage I. The outside air passes through the cooling passage C and the heating passage H, respectively. Cold air passing through the cooling passage (C) from the evaporator unit 30 is guided to the floor door 70 is taken out to the face vent (FV) by the upper door 60 blocking the defrost vent (DV). . On the other hand, the warm air passing through the heater core unit 40 from the heating passage (H) is guided to the floor door 70 is taken out to the floor vent (FLV). Here, the floor door 70 is rotated at a predetermined angle in the counterclockwise direction in the vent mode.

Next, in the floor mode, as shown in FIG. 6C, the outside air flowing into the air inflow passage I passes through the heating passage H by blocking the cooling passage C through the temperature control door 50. Done. The warm air passing through the heater core unit 40 from the heating passage H is branched by the floor door 70 so that most of the warm air is blown out to the floor vent (FLV), while the warm air of the remaining portion is the face vent (FV). By the upper door 60 is blocked by the defrost vent (DV) is taken out. Here, the floor door 70 is further rotated counterclockwise in the bi-level mode. The auxiliary door member 78 of the floor door 70 guides the direction of the warm air blown out by the defrost vent DV.

Next, in the mixed mode, as shown in FIG. 6D, by blocking the cooling passage C through the temperature control door 50, outside air flowing into the air inflow passage I is heated from the heating passage H. The core unit 40 passes through. The warm air passing through the heater core unit 40 from the heating passage H is branched by the floor door 70 so that a part of the warm air is blown out to the floor vent FLV, while the rest of the warm air passes the face vent FV. The upper door 60 is blocked to be taken out to the defrost vent (DV). Here, the floor door 70 is further rotated clockwise in the floor mode. Here, the auxiliary door member 78 guides the warm air direction taken out to the defrost vent DV.

Lastly, in the defrost mode, as shown in FIG. 6E, the outside air flowing into the air inflow passage I by blocking the cooling passage C through the temperature control door 50 is heated from the heating passage H. The core unit 40 passes through. The warm air passing through the heater core unit 40 from the heating passage C is taken out to the defrost vent DV by the upper door 60 blocking the face vent FV.

As described above, according to the present invention, when the user switches to the vent mode, the bi-level mode, the floor mode, the mix mode, and the defrost mode by using the upper door and the floor door as mode adjusting means, the defrost vent (DV) It is selectively discharged to the face vent (FV), floor vent (FLV) to facilitate the distribution of the air volume in each mode. In addition, when the floor door is switched to the floor mode, it is possible to prevent the auxiliary door member from supplying an excessive amount of air to the defrost vent DV.

1 is a cross-sectional configuration diagram of a conventional general air conditioner,

Figure 2 is a cross-sectional configuration of the air conditioning apparatus according to the present invention,

3 is a floor perspective view of the air conditioning apparatus according to the present invention;

4 is a view illustrating a guide baffle of a floor door;

(a) is a perspective view of a flat guide baffle,

(b) is a perspective view of a round guide baffle,

5 is a cross-sectional view taken along the line AA ′ of FIG. 3;

Figure 6 is a state diagram for each mode of the air conditioning apparatus according to the present invention,

(a) is a state diagram in the vent mode,

(b) is a state diagram in the bi-level mode,

(c) is a state diagram in the floor mode,

(d) shows the state in the mix mode,

(e) is a state diagram in defrost mode.

<Description of the code | symbol about the principal part of drawings>

10 case 20 blower unit

30: evaporator unit 40: heater core unit

50: temperature control door 60: upper door

70: floor door 72: main control member

74: rotation axis 76: flange

78: auxiliary door member I: air inflow passage

C: Cooling passage H: Heating passage

DV: Defrost vent FV: Face vent

FLV: Floor Vent

Claims (6)

A blower unit 20 for blowing inside or outside air into the case 10, an evaporator unit 30 and a heater core unit 40 sequentially disposed downstream of the air inflow passage I, and the evaporator unit Temperature control means disposed between the 30 and the heater core unit 40 to selectively pass the air flow to the cooling passage (C) or the heating passage (H), and the cold air or the heating passage through the cooling passage (C) In a vehicle air conditioner comprising a mode control means for selectively passing the warm air passing through (H) to a defrost vent (DV), a face vent (FV), a floor vent (FLV), The mode adjusting means is rotatably supported on the case 10 via a rotation shaft 74, and the passage of the floor vent (FLV) and the passage of the defrost vent (DV) as the door rotates. A guide gear member 72 that selectively opens and closes, and disposed on one side of the guide gear member 72 to guide air supplied to a passage of the floor vent FLV or a passage interlocked with the defrost vent DV. A vehicle air conditioning apparatus comprising a floor door (70) having an auxiliary door member (78). The method of claim 1, The mode control means further comprises an upper door (60) for selectively passing the cold or warm air by blocking the defrost vent (DV) or face vent (FV). The method of claim 1, The main control member 72 is composed of an outer door surface 72a covering an upper portion and a side door surface 72b extending from the outer door surface 72a and covering a side surface thereof. The auxiliary door member (78) is an air conditioning apparatus for a vehicle, characterized in that the extension formed on the line of the rotary shaft (74). The method of claim 1, The main door member (72) and the auxiliary door member (78) are formed separately to rotate independently, characterized in that the vehicle. The method according to claim 1 or 3, An outer circumferential door surface (72a) of the main control member (72) and the auxiliary door member (78) are installed in parallel. The method according to any one of claims 1 to 4, The auxiliary door member 78 is disposed in the gap between the case 10 and the main control member 72 to guide the amount of air supplied to the defrost vent DV in the floor mode toward the floor vent FV. Vehicle air conditioner characterized in that.

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