KR20030086707A - Integrated heat exchanger having evaporator and heater core and car air conditioner using the same - Google Patents

Abstract

PURPOSE: A heat exchanger integrated with an evaporator and a heater core and an air-conditioning system for an automobile using the same are provided to reduce a space for installation by simplifying formation thereof. CONSTITUTION: An integral type heat exchanger(100a) includes a heater core(200) having a plurality of heater core tubes(210) arranged at regular intervals, a heater core first header tank(220) and a heater core second header tank(230) having both of openings of the heater core tubes inserted thereto in order, and a coolant inlet(260) and a coolant outlet(270) formed on one of the heater core first header tank and the heater core second header tank; an evaporator(300) having an evaporator first header tank(320) and an evaporator second header tank(330) inserted to the heater core first header tank and the heater core second header tank, respectively, a plurality of evaporator tubes(310) penetrating insides of the heater core tubes and having both opening parts inserted to the evaporator first header tank and the evaporator second header tank, respectively, and a refrigerant inlet(360) and a refrigerant outlet(370) installed on one of the evaporator first header tank and the evaporator second header tank; and a plurality of heat exchange fins(400) laminated between the heater tubes.

Description

Evaporator and Heater Core Integrated Heat Exchanger and Automotive Air Conditioning Equipment Using Them {INTEGRATED HEAT EXCHANGER HAVING EVAPORATOR AND HEATER CORE AND CAR AIR CONDITIONER USING THE SAME}

The present invention relates to an evaporator and a heater core integrated heat exchanger and an automobile air conditioner using the same, and in particular, an evaporator and a heater core integrated heat exchanger capable of performing a reduction in installation space and independent left and right control due to a simplified configuration, and an automobile using the same. It relates to an air conditioner.

In a general vehicle air conditioner, an evaporator and a heater core are separately installed in an air conditioning case. In this case, the mold development cost is high because the quantity of each component of the evaporator and the heater core increases. In addition, the production line for the evaporator and the heater core must be installed separately, which increases the manufacturing equipment cost, and requires a lot of assembly labor and assembly man-hours. In addition, since the evaporator and the heater core are separately installed in the air conditioning case, not only the interior of the air conditioning case is complicated, but also the size of the air conditioning case is increased, thereby deteriorating the mountability of the air conditioning apparatus to the vehicle. In addition, when the air conditioner is complicated, the resistance increases in the flow of air blown from the blower into the air conditioner case, resulting in a decrease in air volume, an increase in noise, and a decrease in air conditioning performance.

In consideration of this point, an integrated heat exchanger and an air conditioner using the same have been proposed. The representative example thereof is disclosed in Japanese Patent Laid-Open No. 9-39553. The integrated heat exchanger includes a first heat exchanger having an L shape and a second heat exchanger installed in a space formed by an L shape of the first heat exchanger to form a generally planar quadrangular shape. And the second heat exchanger share the heat exchange fins.

The air conditioner using the integrated heat exchanger includes the first heat exchanger as an evaporator of a cooling system and a second heat exchanger as a heater core of a heating system, and the integral heat exchanger is installed in an air passage through which air in the air conditioning case flows. It is done.

However, in the case of the integrated heat exchanger as described above, since the second heat exchanger is integrally provided in the space formed by the bulky L-shaped first heat exchanger, the effect of compacting is limited. In addition, in the air conditioner to which the integrated heat exchanger is applied, in order to set the cooling and heating mode, the doors should be installed at the front or rear (or front and rear) of the evaporator and the rear of the heater core according to its special structure, so that the doors are installed accordingly. Not only is space required, but the structure of the air conditioning case is complicated. In addition, since the degree of heat exchange of the heat exchange medium varies depending on the length of the integrated heat exchanger due to the refrigerant flow structure, it is difficult to apply the integrated heat exchanger to the air conditioner having the left and right independent control structure.

The present invention has been made in consideration of the above-described conventional problems, and an object thereof is to enable a greatly reduced installation space by simplifying the configuration.

Another object of the present invention is to provide an integrated heat exchanger that can be applied to an air conditioning apparatus having left and right independent control structures.

1 is a schematic cross-sectional view showing an example of an integrated heat exchanger according to Embodiment 1 of the present invention.

2 is a cross-sectional view showing the structure of a header tank constituting an integrated heat exchanger according to Embodiment 1 of the present invention.

3 is a cross-sectional view showing the structure of a tube constituting an integrated heat exchanger according to Embodiment 1 of the present invention.

4 is an explanatory view showing a flow structure of the heat exchange medium in the integrated heat exchanger according to the first embodiment of the present invention.

5A is a configuration diagram illustrating an example of a vehicle air conditioner to which an integrated heat exchanger according to Embodiment 1 of the present invention is applied.

FIG. 5B is a cross-sectional view showing an operating state of the water valve constituting the air conditioning apparatus of FIG. 5A.

6 is a configuration diagram showing an example of an air conditioner provided with a water valve in another form.

7 is a schematic cross-sectional view showing an example of an integrated heat exchanger according to Embodiment 2 of the present invention.

8 is a partial cross-sectional view showing an example of a vehicle air conditioner to which an integrated heat exchanger according to Embodiment 2 of the present invention is applied.

9 is a flowchart illustrating a process of removing condensate attached to the surface of the evaporator after turning off the vehicle in the vehicle air conditioner according to the present invention.

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

100, 100a, 100b: integral heat exchanger, 200: heater core,

210: heater core tube, 212, 252: connecting rib,

220: heater core first header tank, 230: heater core second header tank,

240: heater core header, 242, 342: insertion hole,

250: heater core tank, 254, 354: baffle,

260: cooling water inlet, 270: cooling water outlet,

300: evaporator, 310: evaporator tube,

320: evaporator first header tank, 330: evaporator second header tank,

340: evaporator header, 350: evaporator tank,

360: refrigerant inlet, 370: refrigerant outlet,

400: heat exchange fin, 500: air conditioning case,

510: inlet, 520: defrost vent,

520d, 530d, 540d: door, 530: face vent,

540: foot vent, 550: partition wall,

560: left flow path, 570: right flow path,

580: condensate outlet, 590: blower,

600: control unit, 610: temperature sensor,

630: water valve

In order to achieve the above object, the evaporator and the heater core integrated heat exchanger according to the present invention, a plurality of heater core tube disposed at a predetermined interval, the heater core first header tank in which both openings of the heater core tube is inserted in turn and A heater core having a heater core second header tank, a coolant inlet and a coolant discharge port installed at a predetermined place among the heater core first header tank and the heater core second header tank; An evaporator first header tank and an evaporator second header tank, which are sequentially inserted into the heater core first header tank and the heater core second header tank, are disposed to penetrate the inside of the heater core tubes, so that both openings are formed in the evaporator first header. An evaporator having a plurality of evaporator tubes sequentially inserted into the tank and the evaporator second header tank, and a refrigerant inlet port and a refrigerant discharge port installed at a predetermined place among the evaporator first header tank and the evaporator second header tank; And, it characterized in that it comprises a plurality of heat exchange fins respectively stacked between the heater core tubes.

According to the present invention, when the integrated heat exchanger configured as described above is referred to as a first integrated heat exchanger, a second integrated heat exchanger having the same symmetrical structure as this may be further integrated on one side thereof.

In addition, the vehicle air conditioner using the integrated heat exchanger of the present invention has an inlet for introducing the air blown by the blower, is installed to discharge the conditioned air into the interior of the car, and the defrosting is controlled by the opening of each door Ventilation, face vents and foot vents of the air conditioning case is installed in the outlet side of the integrated heat exchanger configured as described above is formed in the inlet side, in this case, the door for adjusting the opening degree of the foot vents in the rear of the integral heat exchanger By adjusting the flow path, it also controls the flow path of the defrost vent and the face vent.

In addition, in order to form an air conditioning apparatus capable of independent left and right control, when the integrated heat exchanger is applied to which the first integrated heat exchanger and the second integrated heat exchanger are integrally formed, an internal flow path of the air conditioning case is applied to the first integrated heat exchanger. The left and right flow passages are partitioned around the boundary of the integrated heat exchanger and the second integrated heat exchanger by the dividing wall, and the vents and the doors are independently separated from the left and right sides corresponding to the left and right flow passages.

In addition, according to the present invention, in any air conditioning apparatus, a temperature sensing sensor is provided on the air discharge side of the integrated heat exchanger to send a signal sensing the temperature of the heater core to the control unit, and the control unit is heated according to the signal. By controlling the opening degree of the water valve interposed in the cooling water pipe connecting the core and the engine, the temperature of the conditioned air can be easily adjusted by adjusting the cooling water supply flow rate to the heater core.

In addition, the air conditioner according to the present invention can be made to completely discharge the condensate remaining on the surface of the integral heat exchanger when the vehicle is turned off in a state after a certain time has passed after its operation. That is, in the air conditioner according to the present invention, if the key switch is turned off after the operation of the air conditioner has elapsed as long as the condensed water condenses on the surface of the integrated heat exchanger, condensed water flows down from the time point at which the key switch is turned off. After a certain time has elapsed to be discharged to the outside, it is determined whether the output voltage of the battery is above a certain voltage. If the voltage is higher than that, the water valve is opened by the control unit and the blower is operated. If the water valve is over a certain time, the water valve is closed and the blower is stopped. Therefore, since the coolant is supplied from the engine to the heater core through the water valve, the high temperature of the coolant is transferred to the surface of the integrated heat exchanger, so that the condensate and moisture can be purged and discharged more quickly.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

<Example 1>

With reference to FIGS. 1-6, the integrated heat exchanger which concerns on Example 1 of this invention, and the automotive air conditioning apparatus using the same are demonstrated.

As shown in FIG. 1, the integrated heat exchanger 100a of the present embodiment includes a heater core 200, an evaporator 300, and a plurality of heat exchange fins shared by the heater core 200 and the evaporator 300. 400 is made.

The heater core 200 includes a plurality of heater core tubes 210 disposed at predetermined intervals, and heater core first header tanks 220 and heater cores in which both openings of the heater core tubes 210 are sequentially inserted. A second header tank 230, a coolant inlet 260 and a coolant outlet 270 provided in the heater core first header tank 220 are provided.

The evaporator 300 may include an evaporator first header tank 320 inserted into the heater core first header tank 220 and an evaporator second header tank inserted into the heater core second header tank 230. 330 and a plurality of evaporator tubes 310 disposed through the heater core tubes 210 so that both openings are sequentially inserted into the evaporator first header tank 320 and the evaporator second header tank 330. ), And a refrigerant inlet 360 and a refrigerant outlet 370 installed in the second header tank 330 of the evaporator.

In addition, the heat exchange fins 400 are respectively stacked between the heater core tubes 210, such that the heater core 200 and the evaporator 300 share the heat exchange fins 400.

According to the present exemplary embodiment, the heater core first header tank 220 may include a heater core header 240 having insertion holes 242 into which the heater core tubes 210 are inserted, as shown in FIG. The heater core tank 250 is bonded to the heater core header 240 to form a flow path therein. The coolant inlet 260 and the coolant outlet 270 are sequentially installed at both ends of the heater core tank 250.

In addition, the evaporator first header tank 320 is the evaporator header 340, the evaporator header 340 is formed, the insertion hole 342 is inserted into the evaporator tube 310, the evaporator is joined to the evaporator header 340 to form a flow path therein It has a tank 350.

The heater core tank 250 and the evaporator tank 350 is preferably made integrally. That is, when the heater core tank 250 and the evaporator tank 350 are integrally formed by the connecting rib 252 connecting the inner circumferential surface of the heater core tank 250 and the outer circumferential surface of the evaporator tank 350 along the longitudinal direction, The integral tank can be easily produced by extrusion. In this case, both openings of the heater core first header tank 220 and the evaporator first header tank 320 may be blocked by joining a cap (not shown).

In addition, the structure of the heater core second header tank 230 and the evaporator second header tank 330 may also be the same as the heater core first header tank 220 and the evaporator first header tank 320. Since only the refrigerant inlet 360 and the refrigerant outlet 370 are provided at both ends of the evaporator tank constituting the evaporator second header tank 330, the detailed description thereof will be omitted.

In addition, although not shown in the present embodiment, in contrast to the above, the coolant inlet 260 and the coolant outlet 270 are installed in the heater core second header tank 230, and the coolant inlet 360 and the coolant outlet 370 are provided. ) May be installed in the evaporator first header tank 320. In addition, a structure in which the inlets and outlets are installed in a predetermined place of each header tank in order to form a specific flow path may also be applied. For example, when the coolant inlet 360 and the coolant outlet 370 are installed at the centers of the evaporator first header tank 320 and the evaporator second header tank 330, the coolant inlet 360 and the coolant outlet 370 are heaters. Must be installed to protrude to the outside of the core first header tank 220 and the heater core second header tank 230.

In addition, according to the present embodiment, in order to form a flow path through which an effective heat exchange may be performed, the inside of the heater core first header tank 220 (that is, the heater core first header tank 220 and the evaporator first header tank ( The space between 320) is preferably partitioned by a baffle 254 (see FIG. 4). In addition, one or more of these baffles 254 may be installed at different locations depending on the installation positions of the coolant inlet 260 and the coolant outlet 270.

Like the heater core 200 described above, in the evaporator 300, the inside of the evaporator second header tank 330 is preferably partitioned by at least one baffle 354 (see FIG. 4). In addition, one or more of these baffles 354 may be installed at different locations depending on the installation positions of the refrigerant inlet 360 and the refrigerant outlet 370.

In addition, when one baffle 254 is installed in the heater core 200 and one baffle 354 is installed in the evaporator 300, the baffles 254 and 354 are opposite to each other, as shown in FIG. 4. It is preferably installed in.

On the other hand, in the present embodiment, the heater core tube 210 and the evaporator tube 310 is preferably made integral. That is, as shown in Figure 3, the heater core tube 210 by one or a plurality of connecting ribs 210 connecting the inner circumferential surface of the heater core tube 210 and the outer circumferential surface of the evaporator tube 310 along the longitudinal direction. And if the evaporator tube 310 is integrally formed, the integral tube can be easily produced by extrusion.

Next, a vehicle air conditioner using an integrated heat exchanger according to Embodiment 1 of the present invention configured as described above will be described.

The automotive air conditioner to which the integrated heat exchanger 100a according to the first embodiment is applied, has an inlet 510 for introducing air blown by the blower 590, as shown in FIG. The air-conditioning case is installed to discharge to the room, and the defrost vent 520, the face vent 530 and the foot vent 540 whose openings are controlled by the doors 520d, 530d, and 540d, respectively, are installed at the exit side. 500 and the integrated heat exchanger 100a of the present embodiment is configured and embedded in the inlet 510 side of the internal flow path of the air conditioning case 500.

According to the air conditioning apparatus of this example, the air blown by the blower 590 flows into the air conditioning case 500 through the inlet 510 of the air conditioning case 500 and passes through the integrated heat exchanger 100a, thereby providing an air conditioning mode. As a result, the heater core 200 or the evaporator 300 is discharged into the interior of the vehicle through the vents that are changed to hot or cold. That is, through the defrost vent 520, the harmonic air is discharged toward the windshield and used for defrosting, and through the face vent 530, the harmonic air is discharged to the upper half of the vehicle interior, and also through the foot vent 540. As the conditioned air is discharged to the floor of the vehicle interior, cooling or heating of the vehicle interior is performed.

In the air conditioner of this example, the door 540d for adjusting the opening degree of the foot vent 540 also serves to adjust the flow path at the rear of the integrated heat exchanger 100a. That is, the door 540d may selectively adjust the air volume toward the foot vent 540 of the conditioned air passing through the integrated heat exchanger 100a and the air volume control toward the defrost vent 520 and / or the face vent 530. By performing the function as a mode door for adjusting the flow path to the defrost vent 520 and / or the face vent 530 side. Such a structure of the door 540d may be selected due to the inherent structure of the integrated heat exchanger 100a of the present invention, thus simplifying the adjustment of temperature or mode by a plurality of conventional doors.

On the other hand, according to the present invention, the air discharge side of the integrated heat exchanger (100a) is provided with a temperature sensor 610 for transmitting a signal for sensing the temperature of the heater core 200 to the control unit 600, the control unit ( The control unit 600 controls the opening degree of the water valve 630 interposed in the cooling water pipe connecting the heater core 200 and the engine 620 according to the signal.

As shown in FIG. 5B, the water valve 630 has a cooling water supply line 640 connected to the cooling water inlet 260 and a cooling water discharge line 650 connected to the cooling water outlet 270. A valve plate 632 and a valve plate rotatably installed in the flow path of the valve case 632 to adjust the opening degree of the flow path of the coolant supply line 640 and the coolant discharge line 650 according to the rotation amount thereof. 634). Therefore, as shown in FIGS. 5A and 5B, when the valve plate 634 is rotated to a position at which the flow paths of the cooling water supply line 640 and the cooling water discharge line 650 are blocked (dashed line display position in FIG. 5B). The coolant discharged from the engine 620 is bypassed to the engine 620 via the coolant supply line 640, the flow path of the valve case 632, and the coolant discharge line 650, and the coolant is supplied to the heater core 200. Not supplied When the valve plate 634 is rotated to a position where the flow paths of the coolant supply line 640 and the coolant discharge line 650 are not blocked (solid line indicated position in FIG. 5B), the coolant discharged from the engine 620 is supplied with the coolant. Line 640, the flow path of the valve case 632, the cooling water supply line 640, the heater core 200, the cooling water discharge line 650, the flow path of the valve case 632 and the cooling water discharge line 650 in order Return to engine 620. In this case, the coolant flow rate is determined according to the opening degree of the coolant supply line 640 and the coolant discharge line 650 according to the rotation amount of the valve plate 634, and the rotation amount of the valve plate 634 is a temperature sensor 610. It is performed by the control of the control unit 600 according to the detection signal of the). Therefore, the cooling water supply flow rate to the heater core 200 is automatically controlled according to the surface temperature of the heater core 200, so that the temperature of the conditioner air can be adjusted. As complicated components such as a driving device for driving are excluded, the components can be simplified and the size of the air conditioner can be greatly reduced.

On the other hand, as shown in Figure 6, the water valve 630 may be installed in another form, the cooling water supply line 630 by connecting the engine 620 and the heater core 200, from the engine 620 The discharged cooling water is immediately supplied to the heater core 200. In addition, the coolant discharge line 640 connects the heater core 200 and the engine 620 via the water valve 630 and the radiator 660, so that the coolant discharged from the heater core 20 is a water valve 630. And the radiator 660 to return to the engine 620. As described above, the flow rate of the cooling water is installed on the air discharge side of the integrated heat exchanger 100a and the control unit 600 according to the signal of the temperature sensor 610 for detecting the temperature of the heater core 200. The opening degree of the water valve 630 may be controlled by the output signal of.

Next, the operation of the integrated heat exchanger according to the first embodiment of the present invention configured as described above and the vehicle air conditioner using the same will be described.

In the cooling mode, as shown in FIG. 5A, the refrigerant is discharged from the refrigerant outlet 370 of the evaporator 300 by the driving of the compressor 700, and is sucked into the compressor 700. Compressed in the 700 and discharged toward the condenser 710 condensed in the course of passing through the condenser 710, and then through the receiver dryer 720 and expansion valve 730 through the refrigerant inlet 360 to the evaporator 300 Supplied.

The refrigerant supplied to the evaporator 300 flows along a predetermined flow path applied to the evaporator 300. That is, as shown in FIG. 4, the refrigerant flowing into the evaporator second header tank 330 through the refrigerant inlet 360 flows to the baffle 354 and passes through the evaporator tubes 310 coupled to the region. 1 flows into the header tank 320. The refrigerant flows through the evaporator tubes 310 coupled to the region between the baffle 354 and the refrigerant outlet 370 to the region between the baffle 354 and the refrigerant outlet 370 of the second header tank 330 of the evaporator. Afterwards it is discharged toward the compressor 700 through the refrigerant outlet 370. That is, the flow path of the refrigerant in the integrated heat exchanger 100a forms a U shape.

As such, the refrigerant flowing in the integrated heat exchanger 100a is evaporated by heat exchange with air blown by the blower 590 connected to the inlet 510 of the air conditioning case 500, and the blower air is changed to cold. This cool air is guided according to the turning angle of the door 540d which functions as a mode door, and is discharged to the interior of the vehicle through an open vent, thereby cooling the interior of the vehicle.

In this cooling mode, the operation of the heating system is stopped, and the coolant discharged from the engine 620 does not flow in the heater core 200. That is, as shown in FIG. 5B, the valve plate 634 of the water valve 630 rotates to a position that blocks the flow path of the coolant supply line 640 and the coolant discharge line 650, thereby discharging it from the engine 620. Since the cooling water is bypassed to the engine 620 through the cooling water supply line 640, the flow path of the valve case 632, and the cooling water discharge line 650, the cooling water is not supplied to the heater core 200. In addition, in FIG. 6, the water valve 630 is operated to block the flow path of the cooling water discharge line 650 so that the cooling water does not flow.

On the other hand, in the heating mode, the driving of the compressor 700 is stopped, so that no refrigerant flows to the evaporator 300, and the valve plate 634 of the water valve 630 shown in FIG. 5B provides the cooling water supply line 640. And by rotating to the position to open the flow path of the coolant discharge line 650, the coolant discharged from the engine 620 is a heater through the coolant inlet 260 via the flow path of the coolant supply line 640 and the valve case 632 Flows into the core 200.

The coolant supplied to the heater core 200 flows along a predetermined flow path applied to the heater core 200. That is, the coolant flowing into the heater core first header tank 220 through the coolant inlet 260 flows up to the baffle 254 and passes through the heater core tube 210 coupled to the heater core second header tank ( 230). This coolant is the area between the baffle 254 and the coolant outlet 270 of the heater core first header tank 220 through the heater core tubes 210 coupled to the area between the baffle 254 and the coolant outlet 270. After flow to the return to the engine 620 through the cooling water discharge port 270. That is, the flow path of the cooling water in the integrated heat exchanger 100a forms a U shape in a direction opposite to that of the refrigerant.

As such, the coolant flowing in the integrated heat exchanger 100a is heat-exchanged with the air blown by the blower 590 connected to the inlet 510 of the air-conditioning case 500, and the blower air is changed to warmth. This warmth is guided by the flow angle of the door 540d, which functions as a mode door, and discharged to the interior of the vehicle through an open vent, thereby heating the interior of the vehicle. On the other hand, the cooled cooling water is returned to the engine 620 via the flow path of the cooling water discharge line 650 and the valve case 632.

In addition, in FIG. 6, the water valve 630 operates to open the flow path of the coolant discharge line 650 so that the coolant is connected to the engine 620, the heater core 200, the water valve 630, and the radiator 660. The engine 620 is returned to the engine 620 in order. In this case, since the coolant that is heat exchanged through the heater core 200 and the temperature is deprived is returned to the engine 620 while being further cooled while passing through the radiator 660, the cooling performance of the coolant is excellent. Therefore, there is an advantage that the coolant overheat phenomenon of the radiator 660 can be prevented even under severe operating conditions.

On the other hand, the temperature of the air conditioning in the cooling / heating mode as described above is the opening degree of the water valve 630 by the control unit 600 in accordance with the air discharge side temperature detection of the heater core 200 of the temperature sensor 610 It can be adjusted by controlling.

In addition, the air conditioner of FIG. 5A is merely an example of a special air conditioner to which the integrated heat exchanger 100a of the present embodiment is applied, and the integrated heat exchanger 100a of the present embodiment may be easily applied to a general air conditioner. In addition, the integrated heat exchanger 100a of the present embodiment is applied to such a general air conditioner, all of which should be included in the scope of the present invention.

<Example 2>

7 and 8, an integrated heat exchanger and an automobile air conditioner using the same according to the second embodiment of the present invention will be described.

The heat exchanger 100 of the present embodiment is configured to configure an air conditioning apparatus capable of independent left and right control, and as shown in FIG. 7, the first integrated heat exchanger 100a according to the first embodiment is heat exchanged. When referred to, the second integral heat exchanger (100b) made of this and the same type of symmetrical structure on one side is further provided integrally. In this case, it is preferable that the first integral heat exchanger 100a and the second integral heat exchanger 100b are joined to each other in a state in which the heater core second header tanks 230 face each other.

In addition, in order to configure an air conditioning apparatus capable of independent left and right control by using the integrated heat exchanger 100 of the present embodiment, the interior of the air conditioning case 500 in the air conditioning apparatus of Embodiment 1 as shown in FIG. The flow path is divided into the left flow passage 560 and the right flow passage 570 by the separating wall 550 around the boundary of the first integrated heat exchanger 100a and the second integrated heat exchanger 100b. In addition, although not shown in detail, the vents 520, 530, and 540 and the doors 520d, 530d, and 540d are also independently separated from left and right sides corresponding to the left and right flow passages 560 and 570. Therefore, the air discharged to the interior of the vehicle may be discharged to the left and right side by independent operation of the vents 520, 530, and 540 and the doors 520d, 530d, and 540d. Can be controlled independently.

On the other hand, according to the present invention, in the above-described air conditioning apparatus of the first embodiment and the second embodiment, when the ignition key of the vehicle is pulled out and the key switch is turned off, condensed water remains on the surface of the integrated heat exchanger by the operation of the previous air conditioning system. Therefore, as the dust introduced from the outside is attached to the surface of the integrated heat exchanger by the condensate, as well as the environment where the microorganisms are parasitic by the condensate, bad smell is generated. Therefore, the blower 590 must be operated to purge the condensate through the condensate outlet 580 (see FIG. 5A), but when the voltage of the battery for operating the blower 590 is lower than a predetermined value (eg, YV). There is a risk that the engine 620 may not be restarted in the future due to over discharge, and there is a risk of fire due to overload.

In consideration of this point, the air conditioner of the embodiments according to the present invention remains on the surface of the integrated heat exchanger when the vehicle is turned off in a state after a predetermined time has elapsed after the air conditioner is operated through a process as shown in FIG. 9. Condensate is made to discharge effectively.

That is, according to the air conditioner of the present invention, when it is detected that the movable switch of the key switch is in contact with the accessory terminal (S100), it is determined whether the air conditioner switch connected in series with the key switch is turned on (S110).

Next, when the air conditioner switch is turned on and the operation of the air conditioner has elapsed for a predetermined time, the cumulative time of operating the air conditioner through the timer may be condensed on the surface of the integrated heat exchanger if the air conditioner is accumulated for a predetermined time. It is determined whether or not the time is about 3-7 minutes) t1 or more (S120). At this time, when the accumulated operation time of the air conditioner is within t1, it is determined whether the key switch is turned off (S130). As a result of the key switch off determination (S130), when the key switch is not turned off, the timer returns to the on determination step of the air conditioner switch (S110). Reset and return to the initial stage.

On the other hand, in the step S120 of determining whether the air conditioner operation accumulated time is t1 or more, if the air conditioner operation accumulated time is t1 or more, it is determined whether the key switch is turned off (S150). The reason for determining whether the cumulative air conditioner operation time is t1 or more is that the actual air conditioner was operated, but the operation time was very short, even though the condensed water did not form on the surface of the integrated heat exchanger. In order to prevent unnecessary battery power consumption.

Next, as a result of determining whether the key switch is turned off (S150), it is determined whether or not a predetermined time t2 or more has elapsed from the time when the key switch is turned off (S160). This constant time (t2) is the surface temperature of the integrated heat exchanger is almost the same as the atmospheric temperature as the air conditioner has already been operated for a predetermined time (t1) so that the condensate is almost exhausted and discharged through the condensate outlet 580 and only moisture remains. The time required is about 40-50 minutes. As such, the reason for determining whether the predetermined time (t2) or more has elapsed (S160) is that, when only the moisture remains, the blower 590 operates to purge the moisture through the condensate outlet 580, but the condensate in the form of water droplets. Is left on the surface of the integrated heat exchanger in a state where the condensate is not completely dissolved, so even if the blower 590 is operated for a certain time, the condensate and moisture may remain after the blower 590 is stopped. Because there is.

When it is determined that the predetermined time t2 or more has elapsed after the key switch-off (S160), it is determined whether the output voltage of the battery is a constant voltage (YV), for example, 11V or more (S170). As such, the reason for determining whether the output voltage of the battery is equal to or higher than the constant voltage (YV) (S170) is that if the charge voltage of the battery is lower than the constant voltage (YV), the blower 590 may be over discharged. In this way, if the battery is over-discharged as described above, it is to prevent the starting failure phenomenon that does not start when restarting later.

In the determining of whether the battery output voltage is equal to or greater than the predetermined voltage YV (S170), when the battery output voltage is within the predetermined voltage YV, the starting state is returned to the initial stage as it is. When the battery output voltage is equal to or higher than the predetermined voltage YV, the water valve 630 is opened and the blower 590 is operated (S180). Blower 590 is preferably operated in a high mode. As described above, when the water valve 630 is opened and the blower 590 is operated, the high temperature of the coolant is transferred to the surface of the integrated heat exchanger while the coolant passes through the heater core 200 so that the moisture is more quickly. Can be removed.

As described above, after the blower 590 is operated, it is determined through the timer whether the blower 590 is operated for a predetermined time t3 or more (S190). The predetermined time t3 is set such that the residual moisture is enough to purge all of the residual moisture through the condensate outlet 580 and not consume battery power unnecessarily, for example, about 2 to 5 minutes. It is preferable.

When the operation time of the blower 590 is determined to be equal to or greater than a predetermined time t3 (S190), the water valve 630 is closed and the operation of the blower 590 is stopped (S200), thereby removing condensate. do.

Since a series of control processes as described above can be controlled by the control unit 600, detailed description of the control relationship is omitted here.

When the condensate and moisture are completely discharged and removed through the condensate outlet 580 in the air conditioning case 500 through the steps as described above, even if the air conditioner is operated by restarting the vehicle, odor or polluted air is stored in the interior of the car. It does not flow in.

In the evaporator and the heater core integrated heat exchanger according to the present invention configured as described above and the vehicle air conditioner using the same, the integrated heat exchanger is made compact by forming an integrated heat exchanger in a form similar to that in which the evaporator is installed inside the heater core. Can be effectively achieved. In addition, since the air conditioning case can be simplified and compacted according to the compactness of the integrated heat exchanger, not only the mountability of the air conditioner to the vehicle can be increased but also the manufacturing cost of the air conditioner can be reduced. In particular, since the components such as a temperature control door that has been conventionally employed for adjusting the temperature of the conditioned air and a driving device for driving these components are excluded, the effect is further enhanced.

Furthermore, in the present invention, since the heater core tank and the evaporator tank can be easily manufactured integrally by extrusion, and also the heater core tube and the evaporator tube can be easily manufactured integrally by extrusion, the productivity of the integrated heat exchanger can also be increased. have.

In addition, since the integrated heat exchanger according to the second embodiment can be effectively applied to the air conditioner having the left and right independent control structure, it is possible to compact and simplify the air conditioner having the left and right independent control structure.

In the air conditioner according to the present invention, since the condensate remaining on the surface of the integrated heat exchanger can be completely discharged after the vehicle is turned off, even if the air conditioner is operated after the vehicle is restarted, odor or contaminated air remains. It does not enter the car interior. Therefore, not only can the health of the occupants be protected, but also the comfortable driving of the vehicle can be achieved.

Claims (12)

A plurality of heater core tubes 210 disposed at predetermined intervals, heater core first header tanks 220 and heater core second header tanks 230 in which both openings of the heater core tubes are sequentially inserted; A heater core (200) having a coolant inlet (260) and a coolant outlet (270) installed at a predetermined place among the core first header tank and the heater core second header tank; The evaporator first header tank 320 and the evaporator second header tank 330 which are sequentially inserted into the heater core first header tank and the heater core second header tank are disposed to penetrate through the inside of the heater core tubes. A plurality of evaporator tubes 310 are sequentially inserted into the evaporator first header tank and the evaporator second header tank, and the refrigerant inlet 360 installed at a predetermined place among the evaporator first header tank and the evaporator second header tank. And evaporator 300 having a refrigerant outlet 370; And, Evaporator and heater core integrated heat exchanger comprising a plurality of heat exchange fins (400) respectively stacked between the heater core tubes. The method of claim 1, And the heater core tubes and the evaporator tubes are integrally formed by connecting ribs (212). The method of claim 1, The heater core first header tank and the heater core second header tank each include a heater core header 240 having insertion holes 242 into which heater core tubes are inserted, and a heater passage formed therein. Having a heater core tank 250; The evaporator first header tank and the evaporator second header tank each include an evaporator header 340 having insertion holes 354 into which evaporator tubes are inserted, and an evaporator tank 350 that is joined to the evaporator header to form a flow path therein. Evaporator and heater core integrated heat exchanger having a). The method of claim 3, wherein The heater core tank and the evaporator tank is evaporator and heater core integrated heat exchanger, characterized in that formed integrally by the connecting rib (252). The method of claim 1, A flow path forming baffle 254 is further provided in at least one of the heater core first header tank and the heater core second header tank, and at least one of the evaporator first header tank and the evaporator second header tank. Evaporator and heater core integrated heat exchanger, characterized in that the flow path forming baffle (354) is further provided. The method of claim 5, Evaporator and heater core integrated heat exchanger, characterized in that when the flow path forming baffles (254, 354) are provided one by one, the baffles are provided on opposite sides. The method according to any one of claims 1 to 6, When the evaporator and the heater core integrated heat exchanger are referred to as the first integrated heat exchanger 100a, the second integrated heat exchanger 100b having the same symmetrical structure as that of the first integrated heat exchanger is further integrally installed on one side of the first integrated heat exchanger. Evaporator and heater core integrated heat exchanger, characterized in that. A defrost vent having an inlet 510 for introducing air blown by the blower 590 and installed to discharge the conditioned air into the vehicle interior, and whose opening degree is controlled by the doors 520d, 530d, and 540d, respectively. In a vehicle air conditioner in which an integrated heat exchanger (100a) is built in the inlet side of the air conditioner case (520) in which the 520, the face vent 530, and the foot vent 540 are installed at the outlet side: The integrated heat exchanger includes a plurality of heater core tubes 210 disposed at predetermined intervals, and heater core first header tanks 220 and heater core second header tanks 230 in which both openings of the heater core tubes are sequentially inserted. A heater core (200) having a coolant inlet (260) and a coolant outlet (270) installed at a predetermined place among the heater core first header tank and the heater core second header tank; The evaporator first header tank 320 and the evaporator second header tank 330 which are sequentially inserted into the heater core first header tank and the heater core second header tank are disposed to penetrate through the inside of the heater core tubes. A plurality of evaporator tubes 310 are sequentially inserted into the evaporator first header tank and the evaporator second header tank, and the refrigerant inlet 360 installed at a predetermined place among the evaporator first header tank and the evaporator second header tank. And evaporator 300 having a refrigerant outlet 370; And a plurality of heat exchanging fins 400 respectively stacked between the heater core tubes. The method of claim 8, When the integrated heat exchanger 100a is referred to as a first integrated heat exchanger, a second integrated heat exchanger 100b having a same symmetrical structure as that of the first integrated heat exchanger is further integrally installed on one side of the first integrated heat exchanger, The internal flow path of the air conditioning case is divided into a left flow path 560 and a right flow path 570 by a separation wall 550 around the boundary of the first integrated heat exchanger and the second integrated heat exchanger. Corresponding to the left and right flow passages, the respective vents and the doors are also independently separated from left and right, Automotive air conditioning apparatus, characterized in that made to independently control the air conditioning control for the interior of the car to the left and right. The method according to claim 8 or 9, The door (540d) for adjusting the opening degree of the foot vent 540 is a vehicle air conditioning apparatus, characterized in that made to control the flow path of the defrost vent and the face vent side of the rear of the integral heat exchanger. The method according to claim 8 or 9, On the air discharge side of the integrated heat exchanger, a temperature sensor 610 is provided to send a signal sensing the temperature of the heater core to the control unit 600. The control unit is configured to connect the heater core and the engine 620 according to the signal. Vehicle air conditioner, characterized in that for controlling the opening degree of the water valve 630 interposed in the cooling water pipe to connect. The method of claim 11, If the key switch is turned off after the operation time of the air conditioner is greater than the time when the condensate is formed on the surface of the integrated heat exchanger, the condensate flows down from the time point at which the key switch is turned off, and the air conditioner case 500 is provided through the condensate outlet 580. After the elapse of a predetermined time or more to be discharged to the outside, it is determined whether the output voltage of the battery is greater than or equal to a predetermined voltage, and if the voltage is higher than that, the water valve 630 is opened by the control unit 600 and the blower 590 is operated. ) Is operated, and if the operating time of the blower is more than a predetermined time, the water valve is closed again and the operation of the blower is stopped. As the coolant is supplied from the engine 620 to the heater core through the water valve, the high temperature of the coolant is transferred to the surface of the integrated heat exchanger, and condensate and moisture remaining on the surface of the integrated heat exchanger are transferred to the outside of the air conditioning case through the condensate outlet. A vehicle air conditioner, characterized in that to quickly purge discharge.