KR20110090478A - Air conditioning device for vehicles - Google Patents

Abstract

PURPOSE: An air conditioning device for a vehicle is provided to save a manufacturing cost due to decrease in the number of parts since an auxiliary evaporator, an auxiliary expansion valve and a solenoid valve are not used. CONSTITUTION: An air conditioning device for a vehicle comprises a front air-conditioning unit, a rear air-conditioning case(210), a rear air-conditioning unit and a connecting duct(300). The front air-conditioning unit enables air incoming from the outside to be discharged through a plurality of air discharge vents, which selectively passes a heater core after passing an evaporator. First and second fluid paths and a rear air-discharge hole are formed on the rear air-conditioning case. The rear air-conditioning unit comprises an electric heater, a fluid path and a temperature control door.

Description

Air conditioning device for vehicles

The present invention relates to a vehicle air conditioner, and more particularly, it is possible to implement both cooling for the rear seats by using the cold air generated in the front seat air conditioning unit without using a rear seat evaporator, and using a heat transfer heater for rear seat heating. The heating mode for the rear seat can be realized, and unlike the prior art, since the auxiliary evaporator, the auxiliary expansion valve for the rear seat and the solenoid valve are not used at all, the manufacturing cost can be reduced due to the reduction of the number of parts. The present invention relates to a vehicle air conditioner capable of compactly implementing a vehicle air conditioner.

In general, a 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 a cooling air is cooled by the heat exchange between the refrigerant circulating back to the compressor through the condenser, the receiver dryer, the expansion valve and the evaporator by the operation of the compressor, and the blowing air passing through the evaporator surface by the blower. It is configured to cool the interior of the vehicle by being discharged into the vehicle interior.

In addition, the heating system is configured to heat the vehicle interior by allowing the blowing air blown by the blower to enter the room in a warm state by exchanging heat with the cooling water passing through the heater core in the process of returning the engine to the engine through the heater core. .

However, in general, the vehicle air conditioner has a defrost vent, an upper vent for upper body, and a lower vent for lower body located in front of the front seat, which is installed at the exit end of the air conditioner case in which the evaporator and the heater core are built. There is a falling problem.

Korean Patent No. 10-0601832 has been selected by the present applicant as a conventional technology for solving this problem. This prior art is an auxiliary air conditioner for a vehicle that can effectively cool and heat the rear seat of the vehicle, and can utilize the console box as a cooling and heating cabinet. This prior art configuration is installed in the bottom of the console box, the upper end to the upper half of the rear seat and the bottom vent facing the floor of the rear seat is installed at the outlet end, the auxiliary vent is installed in the upper vent and the lower vent in order to open and close the door An air conditioning case; An auxiliary evaporator embedded in the auxiliary air conditioning case and connected to a conduit connecting the compressor and the evaporator; An auxiliary expansion valve connected to the auxiliary evaporator; A solenoid valve connected to the auxiliary expansion valve and connected to a pipe connecting the receiver dryer to the expansion valve; An auxiliary heater core embedded in the auxiliary air conditioning case and connected to a water valve connecting the heater core and the engine; And, it comprises an auxiliary blower which is installed at the inlet end of the auxiliary air conditioning case.

However, in the prior art filed by the applicant, the following problems are newly discovered.

That is, a separate auxiliary air conditioner configured for air conditioning of the rear seats uses a compressor and a condenser in common for the front seat air conditioning unit, and branches from the pipe connecting the compressor and the evaporator for the front seat air conditioning unit. The layout of the layout is complicated by the configuration of the refrigerant pipe and the coolant pipes, which must be connected to the evaporator, and the branch of the coolant pipe connecting the engine and the heater core forming the seat air conditioning system must be connected to the auxiliary heater core. There is a problem, and there is a problem that the manufacturing cost is increased due to the increase in the number of parts according to the need to further provide an auxiliary expansion valve and a solenoid valve for rear seats.

The present invention has been created to solve the above problems, it is possible to implement both the cooling for the rear seats by using the cold air generated in the front seat air conditioning unit without using the rear seat evaporator, the implementation of the conventional auxiliary air conditioning apparatus It is not necessary to design complicated layout of the protruding refrigerant pipe as a problem, and it is possible to implement heating mode for the rear seat by using the electric heater for rear seat heating. There is no need for a complicated layout design of piping, and unlike the prior art, the auxiliary evaporator, the auxiliary expansion valve for the rear seats, and the solenoid valve are not used at all, thereby reducing the manufacturing cost due to the reduction of the number of parts. To provide a vehicle air conditioner that can realize a compact air conditioner Ever it shall be.

Vehicle air conditioner according to the present invention for achieving the above object, the front air conditioner unit is configured to be discharged through a plurality of air discharge vents selectively passing through the heater core after the air introduced from the outside passes through the evaporator; After the first and second branch flow path and the air passing through the first and second branch flow path to allow the air flowing through the rear-seat side air inlet and the rear-seat side air inlet flow in different paths to be discharged to the rear-seat side. A rear-seat air conditioner case having a side air outlet, a heat transfer heater installed on any one of the first and second branch flow paths, and generated by electricity supply, and the heat transfer heaters in the first and second branch flow paths. A rear-seat air conditioning unit having a temperature control door for adjusting the opening degree of the branch passage passing through and the branch passage bypassing the electric heater; It characterized in that it comprises a connection duct for connecting any one of the air discharge vent of the rear seat air inlet port and the plurality of air discharge vent of the air conditioning unit.

According to the vehicle air conditioner according to the present invention it can be expected the following effects.

First, the vehicle air conditioner according to the present invention can implement both cooling for the rear seats by using the cold air generated in the front seat air conditioning unit without using the rear seat evaporator, protruded into a problem in the implementation of the conventional auxiliary air conditioner There is an advantage of not having to design a complicated layout of the refrigerant pipe.

Second, the present invention can implement the heating mode for the rear seat by using the heat transfer heater for the rear seat heating, there is an advantage that does not have to design a complicated layout of the projected cooling water piping as a problem in the implementation of the conventional auxiliary air conditioner. .

Third, unlike the prior art, the present invention does not use the auxiliary evaporator, the rear seat auxiliary expansion valve, and the solenoid valve at all, thereby reducing the manufacturing cost due to the reduction of the number of parts.

Fourth, therefore, the present invention can implement a vehicle air conditioner compactly due to the advantages described above.

1 is a view showing a cool vent mode (Cool Vent Mode) state in a vehicle air conditioner according to the present invention.
Figure 2 is a view showing a warm vent mode (Warm Vent Mode) state in the vehicle air conditioner according to the present invention.
3 is a view showing a 1/2 cool bi-level mode (Cool Bi-Level Mode) state in the vehicle air conditioner according to the present invention.
Figure 4 is a view showing a cool floor mode (Cool Floor Mode) state in the vehicle air conditioner according to the present invention.
Figure 5 is a view showing a warm vent mode (Warm Floor Mode) state in the vehicle air conditioner according to the present invention.
Figure 6 is a perspective view showing the appearance of the PTC heater as an example of the electric heater applied to the present invention.
7 is a cross-sectional view showing a state in which a separator is installed in the rear air conditioner case constituting the rear air conditioner unit in another embodiment of the present invention.
8 is a view showing the relationship between the separation plate and the temperature control door in the rear seat air-conditioning case up to the section "BC" when viewed from the leader line "A" direction, that is, from the top of the rear seat air conditioning case of FIG.

Hereinafter, a preferred embodiment of a vehicle air conditioner according to the present invention will be described in detail with reference to the accompanying drawings.

The vehicle air conditioner according to the present invention is largely composed of a front seat air conditioning unit and a rear seat air conditioning unit 200.

The air-conditioning unit is an example of a semi-center mounting type in which an evaporator unit and a heater unit are integrated and a single blower unit is separately installed and installed. As shown in FIG. 100), the evaporator (E) and the heater core (H) comprises a plurality of air discharge vents selectively passing through the heater core (H) after the air introduced from the outside passes through the evaporator (E). Discharged through.

Air-conditioning case 100 has an air inlet 101 is formed on the inlet side, the air outlet vent 105 for the front seat and the air outlet vent 106 for the rear seat is formed up and down on the outlet side, the air inlet ( An air passage 107 communicating with 101 and the air discharge vents 105 and 106 for front and rear seats is formed.

The evaporator E and the heater core H are installed on the air passage 107 of the air conditioning case 100 so as to be spaced at a predetermined interval.

Here, the all-air air vent 105 is subdivided into a defrost vent 102, a face vent 103 and a floor vent 104, and these vents 102, 103 and 104 are respectively formed. The opening degree is controlled by the defrost door 102A, the face door 103A, and the floor door 104A constituting the air discharge vent opening degree control door.

On the other hand, inside the air conditioning case 100 to adjust the opening degree of the inlet of the cold air passage (P1) in order to allow the air passing through the evaporator (E) to the air discharge vent 105 for all seats and the heater core (H) The temperature control door 110 for all seats to adjust the opening degree of the outlet of the warm passage (P2) to allow air to pass through), and the air passing through the evaporator (H) in the lower part of the heater core (H) is discharged air for the rear seats The first air temperature control door 120 for adjusting the opening degree of the cold air bypass passage P3 formed to flow into the vent 106 and the inlet of the cold air bypass passage P3 and the inlet of the warm air passage P2. And a warmth bypass passage P4 which is formed such that a part of the air downstream of the heater core H in the warmth passage P2 is bypassed to the rear air discharge vent 106, and the warmth bypass passage P4. Second temperature control door 130 for adjusting the opening degree of the) is provided.

In addition, the air conditioning case 100 includes a first rear seat temperature control door 120 and a second rear seat temperature control door 130 for adjusting the opening degree of the cold air bypass passage P3 and the warmth bypass passage P4. It is further provided with a third temperature control door 140 for rear seats to adjust the opening degree of the air outlet vent 106 for the rear seats.

The rear seat air conditioning unit 200 according to the present invention includes a rear seat air conditioning case 210, a heat transfer heater 260, and a temperature control door 270.

The rear seat air conditioning case 210 has a first and second branch passages 230 and 240 for allowing the air flowing through the rear seat side air inlet 220 and the rear seat side air inlet 220 to flow in different paths. And a rear-seat side air discharge port 250 (250A) for discharging air passing through the first and second branch flow paths 230 and 240 to the rear-seat side.

The heat transfer heater 260 is installed on any one of the first and second branch flow paths 230 and 240 and is configured to generate heat by electricity supply. For example, as shown in FIG. It is preferable to use a positive thermister coefficient (PTC heater). The peculiar heater 260 shown in FIG. 6 includes the left and right frames 261 and 262, the top and bottom caps 263 and 264, and the left and right frames 261 and 262 and the top and bottom caps 263 and 264. The heat dissipation fins 265 disposed alternately with each other and a flat tube 266 in which PTC elements are built.

Wires 267 are connected to the upper cap 263 to supply power to the PTC device, and a cover 268 for protecting the wires 267 from the outside is coupled to the upper cap 263.

Next, the temperature control door 270 bypasses the second branch passage 240 and the heat transfer heater 260 passing through the heat transfer heater 260 among the first and second branch passages 230 and 240. It controls the temperature of the air discharged to the rear seat by adjusting the opening degree of the first branch passage 230.

On the other hand, the configuration of the present invention, the connection duct 300 serves to connect any one of the air outlet vent of the rear seat side air inlet 220 and the plurality of air discharge vent of the air conditioning unit. At this time, the air discharged from the air discharge vent connected to the connection duct 300 is in a cold state, and the reason is that the connection duct 300 is connected to the air discharge vent 106 for the rear seat, and the temperature adjustment for the first rear seat This is because the cold air passing through the evaporator E by the door 120 is discharged from the rear air discharge vent 106 immediately without passing through the heater core H and then flows along the connection duct 300. .

And, in addition to the configuration described so far, the rear seat side air outlet (250) (250A) may be configured in at least one branched structure, each of the rear seat side air outlet (250, 250A) branched mode door It is opened and closed by 255.

That is, in the case where two rear-seat side air outlets 250 and 205A are formed, only one mode door 255 may be provided. One of the rear-seat side air discharge ports 250 is configured to face the upper body of the occupant of the rear seat, and the remaining 250A is configured to face the lower body of the rear seat occupant, and the direction of the mode door 255 as necessary. It is possible to change the air discharge direction by switching.

In addition, the present invention may further include a rear-side blower 290 for forcedly blowing air flowing through the connection duct 300 to the downstream-side air inlet 220. The rear seat blower 290 guides the air blown by the blower fan 291 to the air inlet 220 by receiving the air flowed through the blower fan 291 of the scroll fan type and the connection duct 300. It consists of a scroll case 292 surrounding the blower fan 291 so as to.

The operation of the present invention configured as described above will be described.

First, the first rear seat temperature control door 120 constituting the front seat air conditioning unit is completely opened by opening the inlet of the cold air bypass passage (P3), the second rear seat temperature control door 120 is operated for the rear seat The air discharge vent 106 is opened. In this case, the cold air heat-exchanged while passing through the evaporator (E) is discharged from the rear air discharge vent 106, and then moved along the inside of the connection duct 300, and then the rear air side air inlet of the rear air conditioner case 210. 220 is reached. At this time, as shown in FIGS. 1 and 4 according to the operating position of the temperature control door 220, bypass the heat transfer heater 260 to the rear seat side air discharge port 250 along the first branch flow path 230. Through the cooling air reaches the rear interior space, it is possible to implement a cooling mode for the interior space of the rear seat. That is, as shown in Figure 1 is discharged to the vent (VENT), the upper body of the occupant on the rear seats through the rear-seat side air discharge port 250, as shown in Figure 2 the rear air outlet 250A It is discharged to the floor (FLOOR) side of the lower body of the occupant on the rear seat side through.

Next, as shown in FIG. 3, when the temperature control door 220 opens the first branch passage 230 and the second branch passage 240 in a 1/2 position, respectively, the rear seat side air inlet hole ( Some of the air introduced through the 220 passes through the first branch channel 230, and the other part passes through the second branch channel 240, and then is mixed with each other on the downstream side of the heat transfer heater 260. Mixing air is reached through the rear-seat side air discharge port 250 to the rear-seat side interior space, thereby realizing a mixing mode for the rear-seat interior space. That is, as shown in Figure 3 is discharged to the vent (VENT), the upper body of the occupant of the occupant on the rear seat side and the floor (FLOOR) of the lower body of the occupant through the rear seat air discharge port 250. At this time, the heat transfer heater 260 can be heated in a warm state by heat-exchanging the air passing through the power is applied.

On the other hand, as shown in Figures 2 and 5, when the temperature control door 220 is in the operating position to completely close the first branch flow path 230 and fully open the second branch flow path 240. In addition, the air passing through the second separation passage 240 is heated by the heat transfer heater 260 to reach the rear-side interior space through the rear-side air discharge port 250 in a warm state. Heating mode can be implemented. That is, as shown in Figure 2 is discharged to the vent (VENT), the upper body of the occupant on the rear seat through the rear air outlet 250, as shown in Figure 5 the rear air outlet (250A) It is discharged to the floor (FLOOR) side of the lower body of the occupant on the rear seat side through.

Meanwhile, in the present invention, as shown in FIGS. 7 and 8, the rear seat air conditioning case 210 includes the first and second branch flow paths 230 and 240 in two regions, that is, the left and right regions LZ. Separating plate 280 is further divided into (RZ), the temperature control door 270 is divided into two regions, that is, divided by the separating plate 280 (shaded area indicated by dots in FIG. 7), It is installed in the left and right areas respectively to control the rear left and right temperatures separately.

In other words, at the center of the air-conditioning case 100 constituting the seat air conditioning unit, a separation plate (not shown) for separating the flow path into two right and left areas is installed, and doors are respectively installed in the left and right areas divided by the separation plate. In this case, so-called multi-zones, such as 4-zone control, which can independently control the air conditioning conditions of the left and right areas of the rear seat as well as the left and right areas of the front seat in the cabin, respectively. Multi-zone control has the advantage of being possible.

As described above, the vehicle air conditioner according to the present invention can implement both cooling for the rear seats by using the cold air generated in the front seat air conditioning unit without using the rear seat evaporator, a problem in the implementation of the conventional auxiliary air conditioner This has the advantage of not having to design a complicated layout of the protruding refrigerant conduit.

In addition, the present invention can implement the heating mode for the rear seat by using the heat transfer heater for the rear seat heating, there is an advantage that does not have to design a complicated layout of the projected cooling water piping as a problem in the implementation of the conventional auxiliary air conditioner. .

In addition, the present invention does not use the auxiliary evaporator, the auxiliary expansion valve for the rear seat, and the solenoid valve at all, and thus, there is an advantage of reducing manufacturing costs due to the reduction in the number of parts.

Therefore, the present invention can implement a vehicle air conditioner compactly due to the advantages described above.

E: Evaporator H: Heater Core
200: rear seat air conditioning unit
210: rear seat air conditioning case 220: rear seat side air inlet
230,240: first and second branch flow path 250: rear-seat side air outlet
255: mode door 260: electric heater
270 temperature control door 290 rear seat blower
300: connection duct

Claims (6)

An air-conditioning unit configured to be discharged through a plurality of air discharge vents selectively passing through the heater core H after the air introduced from the outside passes through the evaporator E;
First and second branch passages 230 and 240 and the first and second branches to allow air introduced through the rear-seat side air inlet 220 and the rear-seat side air inlet 220 to flow in different paths. The rear air conditioner case 210 having the rear air side air outlet 250 is formed so that air passing through the flow paths 230 and 240 is discharged to the rear seat side, and any one of the first and second branch flow paths 230 and 240. A heat transfer heater 260 installed on one branch passage and generated by electricity supply, and a branch passage 240 passing through the heat transfer heater 260 of the first and second branch passages 230 and 240; A rear-seat air conditioning unit 200 having a temperature control door 270 for adjusting the opening degree of the branch flow path 230 bypassing the heat transfer heater 260;
The rear seat side air inlet 220 and the vehicle air conditioning apparatus comprising a connection duct (300) for connecting any one of the air discharge vent of the plurality of air discharge vent of the air conditioning unit. The method of claim 1,
The electrothermal heater (260) is a vehicle air conditioning apparatus, characterized in that the Positive Thermister Coefficient Heater. The method of claim 1,
The air discharged from the air discharge vent connected to the connection duct 300 is a vehicle air conditioning apparatus, characterized in that the cold air state. The method of claim 1,
The rear-seat side air discharge port 250 is formed with at least one branch, each of the rear-side air discharge port 250 is branched vehicle opening, characterized in that opened and closed by the mode door (255). The method of claim 1,
The rear seat air conditioner case 210 is further provided with a separation plate 280 for dividing the first and second branch passages 230 and 240 into two regions.
The temperature control door 270 is installed in each of the two areas divided by the separation plate 280, the vehicle air conditioner, characterized in that to individually control the rear seat left and right temperature. The method according to any one of claims 1 to 5,
The rear seat side air inlet 220 is a vehicle air conditioner further comprises a rear side blower (290) for forcibly blowing air flowing through the connection duct 300 downstream.

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