KR20080009383A - Air conditioning device for vehicles - Google Patents

Abstract

An air conditioning device for vehicles is provided to form a mode door with two dome type doors for improving assembling efficiency of the mode door and guiding air by the dome type doors to reduce ventilation resistance and size of an air conditioning case. An air conditioning case(110) has a blower at an inlet(114), a plurality of vents(111,112,113) at an outlet, and an evaporator(101) and a heater core(102) inside. A temperature control door(120) is installed at a lower side of the evaporator. A mode door(130) opens and shuts the plurality of vents. The mode door includes a first dome type door(131) installed in the air conditioning case rotatably, and a second dome type door(132) installed at the inside of the first dome type door coaxially. The first dome type door and the second dome type door are operated to open and shut two or more vents.

Description

Air conditioning device for vehicles

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

2 is a cross-sectional view showing a vehicle air conditioner according to the present invention;

3 is a perspective view showing a mode door in a vehicle air conditioner according to the present invention;

Figure 4 is a partial perspective view showing the air conditioning case on the part installed mode door in the vehicle air conditioner according to the present invention,

5 is a cross-sectional view taken along the line A-A in FIG.

6a to 6e are cross-sectional views showing the air conditioning mode of the vehicle air conditioner according to the present invention.

<Description of Signs of Major Parts of Drawings>

100: air conditioner 101: evaporator

102: heater core 110: air conditioning case

111: defrost vent 112: face vent

113: floor vent 114: entrance

115: sealing surface

120: temperature control door 121: sliding plate

121a: driven gear 122: drive shaft

122a: drive gear 130: mode door

131: first domed door 131a, 132a: rotating shaft

131b and 132b: side plates 131c and 132c: dome plate

132: second domed door 140: control means

141: actuator 142: cam

142a: protrusion

143: first arm lever 144: second arm lever

144a: turning

The present invention relates to a vehicle air conditioner, and more particularly, by configuring two dome-shaped doors installed coaxially with a mode door for opening and closing a plurality of vents according to the air conditioning mode, to reduce the cost and to assemble the mode door In addition to improving the air guided by the dome-shaped door to reduce the ventilation resistance and to reduce the size of the air conditioning case relates to a vehicle air conditioner.

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

The cooling system is operated by a compressor, and the blower air is exchanged with a refrigerant circulating back to the compressor through a condenser, a receiver dryer, an expansion valve, and an evaporator, and a blower air passing through the evaporator surface by a blower. It is configured to cool the interior of the vehicle by changing to cold and discharging the vehicle interior.

In addition, the heating system is configured to heat the vehicle interior by introducing coolant into the heater core and exchanging heat with the blower.

Such a vehicle air conditioner can be roughly 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 configured as separate units, and the size of the air conditioner is increased. As a result, the utilization of the interior space of the vehicle is lowered, and there are various problems such as reduced productivity.

Therefore, in order to increase the efficiency of the interior space of the vehicle, it is required to miniaturize the vehicle air conditioner. In response to this demand, a semi-center mounting type air conditioner or an integrated unit of an evaporator unit and a heater unit has recently been developed. The application of the center mounting type air conditioner unit in which a blower unit, an evaporator unit, and a heater unit are integrated is increasing.

Figure 1 shows an example of a vehicle air conditioner of the conventional semi-center type, the illustration of the blower unit is omitted.

The vehicle air conditioner 1 shown in FIG. 1 has a defrost vent 11, a face vent 12, and a floor vent 13 whose openings are adjusted by mode doors 11a, 12a, 13a at an exit, respectively. The air conditioning case 10 is installed; A blower (not shown) connected to the inlet of the air conditioning case 10 to blow inside or outside air; An evaporator (2) and a heater core (3) embedded in the air conditioning case (10); And it comprises a temperature control door 20 for adjusting the amount of mixing the cold through the evaporator (2) and the warmth through the heater core (3).

Here, the temperature control door 20 includes a plate type, a dome type, a sliding type, and the like, and FIG. 1 illustrates a case in which a sliding type temperature controlling door is applied.

The temperature control door 20 is slidably installed on both inner walls of the air conditioning case 10 and has a sliding plate 21 having a driven gear 21a formed on one side thereof, and on both side walls of the air conditioning case 10. A drive gear 22a is formed to be rotatably coupled to the driven gear 21a of the sliding plate 21 and includes a drive shaft 22 for operating the sliding plate 21.

The temperature control door 20 is installed to adjust the amount of mixing of cold and warm air by adjusting the opening degree of the outlet of the cold air passage (P1) and the inlet of the warm air passage (P2).

According to the vehicle air conditioner 1 configured as described above, when the maximum cooling mode is operated, the temperature control door 20 opens the cold air passage (P1) and closes the warm 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 operated, the air blown by the blower not shown is exchanged with the refrigerant flowing through the inside of the evaporator 2 while passing through the surface of the evaporator 2 to be changed to cold, and then the refrigerant passage It flows toward the mixing chamber (MC) through the P1 and is discharged into the vehicle interior through the vent which is opened according to a predetermined air conditioning mode (vent mode, floor mode, defrost mode, bi-level mode, mix mode). As a result, cooling of the vehicle interior is performed.

In addition, when the maximum heating mode is activated, the blowing air is exchanged with the coolant flowing through the inside of the heater core 3 while passing through the heater core 3 through the warm passage (P2) to the warmer, and then mixing chamber ( Flows toward MC) and is discharged to the vehicle interior through a vent which is opened according to a predetermined air conditioning mode, thereby heating the vehicle interior.

When the cooling mode other than the maximum cooling mode, that is, the 1/2 cooling mode is operated, as shown in FIG. 1, the temperature control door 20 rotates to a neutral position, so that the cooling air passage P1 is used. Open both the outlet and the inlet of the warm passage (P2). Therefore, while the cold through the evaporator 2 and the warm through the heater core 3 flows to the mixing chamber MC and is mixed, it is discharged into the vehicle interior through a vent that is opened according to a predetermined air conditioning mode.

On the other hand, the mode doors (11a) (12a, 13a) is a plate-like rotatably installed on the inlet side of the defrost vent 11, the face vent 12 and the floor vent 13, respectively, the inlet of each vent To open and close the door. That is, the plurality of mode doors 11a, 12a, 13a are rotated by an actuator (not shown) and a cam (not shown) installed on the outer surface of the air conditioning case 10.

However, the vehicle air conditioner 1 to which the three plate-shaped mode doors 11a, 12a, 13a are applied as described above has to be provided with the three mode doors 11a, 12a, 13a, thereby increasing the manufacturing cost. Of course, there was a problem that the assembly is complicated and takes up a lot of installation space.

An object of the present invention for solving the above problems is to configure a mode door for opening and closing a plurality of vents in accordance with the air conditioning mode by configuring two dome-shaped doors installed on the coaxial, reducing the cost and improve the assembly of the mode door In addition, the air is guided by the dome-shaped door to reduce the ventilation resistance and to provide a vehicle air conditioner that can reduce the size of the air conditioning case.

In order to achieve the above object, the present invention provides an air conditioner having an air blower installed at an inlet side and a plurality of vents formed at an outlet side, and an evaporator and a heater core installed therein, and a temperature control door installed downstream of the evaporator. And a mode door configured to open and close the plurality of vents, wherein the mode door includes a first domed door rotatably installed inside the air conditioning case and an inner side of the first domed door. The second dome-type door is installed to be overlapped with and installed on the concentric shaft at the same time, the first and second dome-shaped door is characterized in that it operates to open and close two or more vents, respectively.

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

Repeated description of the same parts as in the prior art will be omitted.

2 is a cross-sectional view showing a vehicle air conditioner according to the present invention, Figure 3 is a perspective view showing a mode door in the vehicle air conditioner according to the present invention, Figure 4 is a portion of the mode door is installed in the vehicle air conditioner according to the present invention FIG. 5 is a cross-sectional view taken along line AA of FIG. 4, and FIGS. 6A to 6E are cross-sectional views illustrating an air conditioning mode of a vehicle air conditioner according to the present invention.

As shown, the air conditioner 100 according to the present invention, the cold air passage (P1) and the warm passage (P2) is formed inside the evaporator 101 and the heater core in each of the passage (P1) (P2) An air conditioning case 110 in which the 102 is built, and a temperature control door 120 for adjusting the amount of cold through the evaporator 101 and warmth through the heater core 102 are configured.

An air blower (not shown) is installed at the inlet 114 of the air conditioning case 110 to blow the inside or outside air into the air conditioning case 110.

In addition, the outlet side of the air conditioning case 110, the defrost vent 111 for discharging the air toward the windshield of the vehicle, the face vent 112 for discharging the air toward the passenger's face and the air toward the passenger's foot The floor vent 113 for discharging is formed one by one. Each of the vents is opened and closed by the mode door 130 to adjust the opening degree.

The heater core 102 is installed on the warm passage (P2) of the air conditioning case 110, the evaporator 101 is a cold air passage (P1), that is, the warm passage (P2) of the air conditioning case (110). It is installed adjacent to the inlet 114 side of the air conditioning case 110 upstream side of the.

In addition, the temperature control door 120 is composed of a sliding door, the sliding plate 121 is installed to be slidable on both inner walls of the air conditioning case 110 and the driven gear 121a is formed on one side, The drive shaft 122 is rotatably coupled to both side walls of the air conditioning case 110, and the driving gear 122a is formed to be gear-coupled with the driven gear 121a of the sliding plate 121 to operate the sliding plate 121. )

Therefore, the temperature control door 120 adjusts the opening degree of the outlet of the cold air passage (P1) and the inlet of the warm air passage (P2) to adjust the amount of cold and warm air mixed.

In addition, the mode door 130 has a first dome-shaped door 131 rotatably installed inside the air conditioning case 110, and is installed to overlap the inside of the first dome-shaped door 131 and has a concentric shaft shape. The second dome-shaped door 132 is installed in the.

The first and second domed doors 131 and 132 operate to open and close two or more vents, that is, the first dome door 131 is a face vent 112 and a floor vent 113. The second domed door 132 opens and closes the defrost vent 111, the face vent 112, and the floor vent 113.

The first domed door 131 has a rotation shaft 131a rotatably coupled to both side walls of the air conditioning case 110, a side plate 131b extending radially to the rotation shaft 131a, Is formed at the end of the side plate (131b) is made of a dome plate (131c) for adjusting the opening degree of the vent.

In addition, the second dome-shaped door 132 is formed to extend in the radial direction to the rotating shaft 132a which is rotatably installed on the axis of rotation of the first dome-shaped door 131 concentric with the rotation shaft (131a). The dome is formed at the end of the side plate 132b and the end of the side plate 132b and overlaps with the dome plate 131c of the first dome-shaped door 131 at a predetermined interval to adjust the opening degree of the vent. Plate 132c.

As such, the two first and second domed doors 131 and 132 are installed on the concentric shaft so that the first and second dome doors 131 and 132 may be temporarily assembled to be coupled to the air conditioning case 110 at a time. Assembly is simple.

In addition, by applying a rubber coating on the surfaces of the first and second domed doors 131 and 132, the operation noise of the doors 131 and 132 may be reduced, thereby reducing operating noise. Can be.

In addition, both ends of the dome plates 131c and 132c of the first and second domed doors 131 and 132 are provided at each inlet side of the defrost vent 111, the face vent 112, and the floor vent 113. It is preferable that the sealing surface 115 is formed so that sealing property may be improved while surface contacting.

On the other hand, the control means 140 is installed on the outer surface of the air conditioning case 110 to operate the first and second domed doors (131, 132).

The control means 140 is an actuator 141 installed on the outer surface of the air conditioning case 110, a cam 142 of a predetermined form rotatably installed by the actuator 141, and the cam 142 And a first arm lever 143 coupled to the rotation shaft 131a of the first dome-shaped door 131 which is installed at one side and interlocked with the cam 142 and extends outside the air conditioning case 110. And positioned between the cam 142 and the first arm lever 143 to be interlocked with the cam 142 and rotatably installed on the concentric shaft with the first arm lever 143. The second arm lever 144 coupled to the rotation shaft 132a of the second domed door 132 penetrates through 143.

Here, since the rotation shafts 131a and 132a of the first and second domed doors 131 and 132 are installed on the concentric shaft, the first and second arm levers 143 and 144 are also installed on the concentric shaft. In this case, the first and second arm levers 143 and 144 are independently coupled to the respective rotation shafts 131a and 132a of the first and second domed doors 131 and 132. That is, when the first arm lever 143 rotates, the first dome-shaped door 131 rotates, and when the second arm lever 144 rotates, the second dome-shaped door 132 rotates.

In addition, the first and second arm levers 143 and 144 may be configured in various ways such that the cam 142 is interlocked, and as shown in FIG. 4, the first arm lever 143 is formed of the cam 142. Slidably coupled to the protrusion 142a formed on one side, the second arm lever 144 is configured so that the protrusion 144a formed on one side slides along the outer circumferential surface of the cam 142, the first and second arm levers ( 143, 144 is to rotate in conjunction with the rotation operation of the cam 142.

Therefore, when the cam 142 is rotated by the actuator 141, the first and second arm levers 143 and 144 connected to the cam 142 are rotated independently, respectively, so that the first and second domed doors ( 131 and 132 can be rotated to perform the air conditioning mode (vent mode, floor mode, defrost mode, bi-level mode, mixed mode).

Hereinafter, each air conditioning mode by the mode door 130 of the vehicle air conditioner 100 according to the present invention configured as described above will be described. In addition, since the cooling and heating mode by the temperature control door 120 has been described above, it will be omitted.

First, in the vent mode, as illustrated in FIG. 6A, the first domed door 131 closes the floor vent 113 and the second dome door 132 closes the defrost vent 111. By operation, only the face vent 112 is open. Therefore, the heat exchanged air is discharged to the vehicle interior through the face vent 112 while passing through only the evaporator 101 or simultaneously passing through the evaporator 101 and the heater core 102 by the temperature control door 120.

In the floor mode (Floor mode), as shown in FIG. 6B, the first domed door 131 closes the face vent 112 and the second domed door 132 operates to close the defrost vent 111. Only the floor vent 113 is open. Therefore, the heat exchanged air is discharged to the vehicle interior through the floor vent 113 while passing through only the evaporator 101 or simultaneously passing through the evaporator 101 and the heater core 102 by the temperature control door 120. At this time, the second dome-type door 132 rotates to the face vent 112 side rather than completely closing the defrost vent 111 acts as an air guide so that air can flow smoothly to the floor vent 113 side. Done.

In the defrost mode, as illustrated in FIG. 6C, the first domed door 131 closes the face vent 112, and the second domed door 132 includes the face vent 112 and the floor vent 113. By operating to close at the same time, only the defrost vent 111 is open. Therefore, the heat-exchanged air is discharged to the vehicle interior through the defrost vent 111 while passing through only the evaporator 101 or simultaneously passing through the evaporator 101 and the heater core 102 by the temperature control door 120. .

In the bi-level mode, as shown in FIG. 6D, the first domed door 131 rotates to an intermediate position between the face vent 112 and the floor vent 113 to partially open both. The two domed doors 132 operate to close the defrost vent 111, so that the face vent 112 and the floor vent 113 are partially open. Therefore, the cold air passing through the evaporator 101 by the temperature control door 120 is discharged into the vehicle interior through the face vent 112 and at the same time the warm air passing through the evaporator 101 and the heater core 102 at the same time is a floor vent ( Through 113).

In the mixed mode (MIX mode), as shown in FIG. 6E, the first domed door 131 closes the face vent 112, and the second domed door 132 has a defrost vent 111 and a floor vent 113. The defrost vent 111 and the floor vent 113 are partially open, respectively, by rotating to an intermediate position of and partially opening both of them. Therefore, the cold air that has passed through the evaporator 101 by the temperature control door 120 is discharged into the vehicle interior through the defrost vent 111 and at the same time the warm air that passes through the evaporator 101 and the heater core 102 at the same time is a floor vent. It is discharged to the vehicle interior via the 113. At this time, the second dome-shaped door 132 is located in the intermediate position between the defrost vent 111 and the floor vent 113, so that the cold air passing through the evaporator 101 can smoothly flow to the defrost vent 111 side. At the same time, the warmth passing through the heater core 102 serves as an air guide to smoothly flow to the floor vent 113 side.

As such, the air flowing in the air conditioning case 110 is smoothly guided to the vent side by the second domed door 132, thereby reducing the resistance to ventilation.

According to the present invention described above, by constructing the two-door dome-shaped doors on the concentric shaft, the mode door for opening and closing a plurality of vents according to the air conditioning mode, the cost is reduced and the assemblability of the mode door is improved and the air The ventilation resistance can be reduced and the size of the air conditioning case can be reduced.

In addition, by applying a rubber coating on the domed door, the operation noise of the domed door is reduced.

Claims (4)

An air conditioner 110 having an air blower installed at an inlet 114 side and a plurality of vents 111, 112, 113 formed at an outlet side, and an evaporator 101 and a heater core 102 installed therein; In the vehicle air conditioner comprising a temperature control door 120 installed on the downstream side of the evaporator 101, and a mode door 130 for opening and closing the plurality of vents (111, 112, 113), The mode door 130, A first domed door 131 rotatably installed inside the air conditioning case 110, The second dome-type doors 131 and 132 are installed on the inner side of the first dome-shaped door 131 and are installed on the concentric shaft. Vehicle air conditioner, characterized in that it operates to open and close the vent. The method of claim 1, The first domed door 131 has a rotation shaft 131a rotatably coupled to both side walls of the air conditioning case 110, a side plate 131b extending radially from the rotation shaft 1321a, and the Is formed at the end of the side plate (131b) is made of a dome plate (131c) for adjusting the opening degree of the vent, The second dome-shaped door 132 has a rotation shaft 132a which is rotatably installed on the concentric shaft with the rotation shaft 131a of the first dome-shaped door 131, and a side surface extending radially to the rotation shaft 132a. The dome plate is formed at the end of the plate 132b and the side plate 132b and overlaps with the dome plate 131c of the first dome-shaped door 131 at a predetermined interval to adjust the opening degree of the vent ( 132c) a vehicle air conditioning apparatus. The method of claim 2, The inlet side of each of the vents 111, 112, and 113 is sealed to improve sealing properties while contacting both ends of the dome plates 131c and 132c of the first and second domed doors 131 and 132. Vehicle air conditioner, characterized in that the surface 115 is formed. The method of claim 2, Control means 140 is installed on the outer surface of the air conditioning case 110 to operate the first and second dome-type doors (131, 132), The control means 140, An actuator 141 installed on an outer surface of the air conditioning case 110, a cam 142 having a predetermined shape rotatably installed by the actuator 141, and a cam positioned on one side of the cam 142. The first arm lever 143 and the cam 142 coupled to the rotating shaft 131a of the first domed door 131 which is installed to interlock with the 142 and extends to the outside of the air conditioning case 110. Located between the first arm lever 143 and installed to interlock with the cam 142, rotatably installed on the concentric shaft with the first arm lever 143 and penetrates through the first arm lever 143 Vehicle air conditioning apparatus, characterized in that consisting of a second arm lever (144) coupled to the rotating shaft (132a) of the second domed door (132).

Images