KR20160014830A - Air conditioner for vehicle - Google Patents

Abstract

The present invention relates to an air conditioning device for a vehicle. More specifically, the air conditioning device comprises: a compressor; a main condenser; an expansion unit; an evaporator; an air conditioning case; and a main air blower. A condenser module with a built-in auxiliary condenser is installed at the bottom of a cowl top cover to be connected with an external air inlet of the main condenser such that refrigerant discharged from the main condenser exchanges heat with external air flowing in through the external air inlet via the auxiliary condenser. Accordingly, the main condenser is used as a main heating source, and heated air flows into an inside of a vehicle through the auxiliary condenser, thereby improving heating performance. In addition, the auxiliary condenser is constructed with simplified modules at the bottom of the cowl top cover, thereby facilitating the mount of the air conditioning device and allowing the common use of the air conditioning device. The auxiliary condenser is positioned outside an engine room, thereby preventing an inflow of a pollution source into an engine. Furthermore, the air conditioning device eliminates a weakness in a heat pump system by preventing frost on the evaporator during a heating mode even when the outside temperature drops below zero.

Description

TECHNICAL FIELD [0001] The present invention relates to an air conditioner for an automobile,

More particularly, the present invention relates to an air conditioning apparatus including a compressor, a main condenser, an expansion means, an evaporator, an air conditioning case, and a main blower, And a condenser module including an auxiliary condenser to be connected to the auxiliary condenser so that the refrigerant discharged from the main condenser and the outside air flowing into the outside air inlet are heat-exchanged through the auxiliary condenser, And to a vehicle air conditioner capable of introducing heated air through an auxiliary condenser into the passenger compartment.

Background Art [0002] A vehicle air conditioner generally includes a cooling system for cooling an interior of a vehicle and a heating system for heating the interior of the vehicle. Wherein the cooling system is configured to cool the interior of the vehicle by exchanging the air passing through the outside of the evaporator at the evaporator side of the refrigerant cycle with the refrigerant flowing through the inside of the evaporator to convert into cool air, The air passing through the outside of the heater core is exchanged with the cooling water flowing in the inside of the heater core to warm the inside of the vehicle.

1, the refrigeration cycle generally includes a compressor 1 for compressing and sending refrigerant, a condenser 2 for condensing high-pressure refrigerant sent from the compressor 1, An expansion valve 3, for example, for expanding the refrigerant condensed and liquefied in the expansion valve 2, and a low-pressure liquid-phase refrigerant, which is installed inside the air conditioning case and is throttled by the expansion valve 3, And an evaporator 4 for cooling the air discharged to the inside of the vehicle by heat absorption due to the latent heat of evaporation of the refrigerant by evaporating the refrigerant by heat exchange with air flowing through the refrigerant pipe.

In recent years, the shift from existing fossil-fueled vehicles to environmentally friendly vehicles (hybrid cars, electric vehicles, etc.) is accelerating.

In the case of conventional fossil-fueled vehicles, it is not difficult to achieve sufficient heating performance by using the heat generated by the engine. However, the environment-friendly vehicle, which does not have a large heat source of heat like the engine, In other words, the additional power required for securing the heating heat source consumes the electric power of the eco-friendly vehicle and directly leads to the fuel efficiency of the vehicle. Therefore, it is desired to realize the maximum heating heat source by using less power It is also the biggest challenge now.

2 and 3 are views showing an example of an air conditioner used in an environmentally friendly vehicle. First, Fig. 2 shows an air conditioner to which a PTC heater 11 is applied. The cooling water is heated by a PTC heater 11, Is circulated to the heater core (12) in the air conditioner case (10) to secure a heating heat source. However, there is a problem in that the amount of electric power required for the PTC heater (11) is large.

3 is an air conditioning system to which a heat pump system is applied. Briefly described, the compressor 30, the indoor heat exchanger 31, the first expansion means 32, the outdoor heat exchanger 34, the second expansion means 35 A bypass line L is provided so that the refrigerant bypasses the second expansion means 35 and the evaporator 36 in the heating mode.

Way valve 33 for allowing the refrigerant to bypass the first expansion means 32 in the cooling mode and a three-way valve 38 provided at the branch point of the bypass line L, Flow switching valves are installed.

Therefore, in the heating mode, the heat of the indoor heat exchanger (condenser) 31 installed inside the air conditioner case 20 is used as a heat source of heat. Particularly, the air conditioner has high efficiency 2 or more), it is possible to reduce the power consumption when the heating heat source is secured.

However, the conventional air conditioner employing the conventional heat pump system has a disadvantage in that a complicated refrigerant flow switching valve configuration and an additional configuration for preventing the frosting phenomenon of the outdoor heat exchanger 34 serving as an evaporator in the heating mode are increased .

In order to solve the above problems, an object of the present invention is to provide an air conditioner comprising a compressor, a main condenser, an expansion device, an evaporator, an air conditioning case, and a main blower so as to be connected to the outside air inflow port of the main blower, A condenser module including an auxiliary condenser is installed so that the refrigerant discharged from the main condenser and the outside air flowing into the outside air inlet are heat-exchanged through the auxiliary condenser so that the auxiliary condenser, while using the main condenser as a main heat source, The heating capacity can be improved and the auxiliary condenser can be configured as a simplified module on the lower side of the cowl top cover to improve the vehicle mountability and to make it possible to use the auxiliary capacitor in the outside of the engine room It is possible to prevent the contamination source of the engine room from entering the room. In the heating mode, On condition even it can solve the problem occurring in the evaporator conceived to provide a vehicle air conditioner which can solve disadvantages of a heat pump system.

According to an aspect of the present invention, there is provided an air conditioner including a compressor installed in a refrigerant circulation line, a main condenser, an expansion unit, an evaporator, an air conditioning case having the evaporator installed therein, And a main blower provided with an inner and outer air inflow ports for introducing the inside and outside air on the upstream side of the blowing fan, wherein a refrigerant circulation line between the main condenser and the expansion means is connected to the main condenser And an auxiliary condenser for exchanging heat between the refrigerant and the outside air flowing into the outside air inlet. The outside air inlet side of the main blower guides external air introduced from the outside of the vehicle to the outside air inlet, and a condenser And the module is installed.

The present invention relates to a condenser module in which an auxiliary condenser is incorporated at the lower side of a cowl top cover to be connected to an outside air inlet of the main blower in a air conditioner including a compressor, a main condenser, an expansion device, an evaporator, And the refrigerant discharged from the main condenser and the outside air flowing into the outside air inlet are heat-exchanged through the auxiliary condenser, so that the air heated through the auxiliary condenser while being used as the main heating heat source So that the heating performance and efficiency can be improved.

In addition, since the auxiliary condenser is constituted by a simplified module on the lower side of the cowl top cover, it is possible to improve the vehicle mountability and common use, to use the running wind, and to be located outside the engine room. Can be prevented.

In addition, it is possible to prevent congestion from occurring in the evaporator even in an outside temperature condition of 0 ° C or less in the heating mode, and also to reduce the weight and manufacturing cost of the air conditioner, thereby solving the disadvantage of the heat pump system.

1 is a view showing a refrigeration cycle of a general automotive air conditioner,
2 is a configuration diagram showing an air conditioner used in a conventional environmentally friendly vehicle,
3 is a structural view showing another embodiment of an air conditioner used in a conventional environmentally friendly vehicle;
4 is a configuration diagram showing a vehicle air conditioner according to the present invention.
5 is a configuration diagram showing a cooling mode of a vehicle air conditioner according to the present invention.
6 is a configuration diagram showing a heating mode of the automotive air conditioner according to the present invention;
FIG. 7 is a cross-sectional perspective view showing in detail the intake duct and the condenser module of the main blower in FIG. 4,
8 is a sectional view showing a cooling mode state of a condenser module in a vehicle air conditioner according to the present invention,
9 is a sectional view showing a heating mode of a condenser module in a vehicle air conditioner according to the present invention,
10 is a sectional view showing a mild mode state of a condenser module in a vehicle air conditioner according to the present invention,
FIG. 11 is a sectional view showing a case where the automotive air conditioner according to the present invention is embodied as a center mounting type,
12 is a perspective view showing another embodiment of a condenser module in a vehicle air conditioner according to the present invention,
Fig. 13 is a plan view of Fig. 12,
14 is a side view of Fig.

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

The compressor 100, the main condenser 110, the auxiliary condenser 120, the expansion means 130, and the evaporator 140 are sequentially connected to the refrigerant circulation line R, The evaporator 140 and the heater core 210 are installed in the air conditioning case 300 and the outside air inlet 422 of the main blower 400 connected to the air conditioning case 300 is provided with a storage capacitor A condenser module 600 having a built-in condenser 120 is installed.

First, the compressor 100 receives the power from a power source (such as an engine or a motor) and sucks the low-temperature low-pressure gaseous refrigerant discharged from the evaporator 140, compresses it, and discharges the compressed gas in a gaseous state of high temperature and pressure .

The main condenser 110 is a water-cooled heat exchanger, and the gaseous refrigerant of high temperature and high pressure compressed and discharged from the compressor 100 is heat-exchanged with the cooling water to condense and discharge the liquid refrigerant.

The main condenser 110 supplies a heat source for heating air in the air conditioning case 300.

That is, the cooling water heat exchanged with the high temperature refrigerant in the main condenser 110 is circulated to the heater core 210 in the air conditioning case 300 to heat the air in the air conditioning case 300 to heat the interior of the vehicle.

Although the heater core 210 is omitted and the main condenser 110 is connected to the air conditioning case 300, the cooling water of the main condenser 110 is circulated to the heater core 210, It is also possible to install it directly in the interior of the vehicle.

The main condenser 110 may be a known water-cooled heat exchanger structure. For example, a plate-type heat exchanger structure in which refrigerant channels and cooling water channels are alternately arranged may be used. In addition, various types of water- Can be used.

The main condenser 110 is connected to the heater core 210 in the air conditioning case 300 through a cooling water circulation line W. The cooling water circulation line W is connected to a water pump 200 are installed.

In addition, a water-cooled radiator 220 is installed in the cooling water circulation line W.

The water-cooled radiator 220 is mainly used for cooling an electrical component (not shown) of a vehicle, and a connection structure with an electrical component is omitted in the drawing.

Therefore, the cooling water circulating in the cooling water circulation line W when the water pump 200 is operated passes through the heater core 210 to heat the air flowing in the air conditioning case 300, The cooling water that has passed through the water-cooled radiator 220 flows to the main condenser 110 and is heated by heat exchange with the refrigerant discharged to the compressor 100 and circulated to the heater core 210 again.

On the other hand, the cooling water circulation line W is provided with a direction switching valve 230 to control the flow of the refrigerant variously. For example, in the cooling mode, the cooling water discharged from the water pump 200 bypasses the heater core 210 to change the flow so as to circulate the water-cooled radiator 220 and the main condenser 110.

Of course, the cooling water discharged from the water pump 200 may bypass the heater core 210 and the water-cooled radiator 220 to circulate only the main condenser 110, After the discharged cooling water passes through the heater core 210, the water-cooled radiator 220 may be bypassed and circulated to the main condenser 110.

Thus, the cooling water heated by the heat exchange with the high-temperature refrigerant in the main condenser 110 is circulated along the cooling water circulation line W and is heat-exchanged with the air through the heater core 210 and the water-cooled radiator 220.

The expansion means 130 is installed in the refrigerant circulation line R to expand the refrigerant, and may be constituted by an expansion valve or an orifice.

The expansion means 130 is installed in a refrigerant circulation line R between the auxiliary condenser 120 and the evaporator 140 so that the liquid refrigerant discharged from the auxiliary condenser 120 is rapidly expanded by the throttling action, And is sent to the evaporator 140 in a low-pressure, wet state.

The evaporator 140 is installed in the air conditioning case 300 and cools the air by exchanging heat between the refrigerant discharged from the expansion means 130 and air in the air conditioning case 300.

The air conditioning case 300 is provided with a cold air passage P1 in which the evaporator 140 is installed and a hot air passage P2 in which the heater core 210 is installed, The air discharge port 320 is formed downstream of the mixing area MC where the hot air passages P2 are merged to discharge air into the passenger compartment.

As shown in the figure, when the main blower 400 and the auxiliary blower 500 are installed in the air conditioning case 300, the air blown from the main blower 400 passes through the cool air passage P1, The air blown out from the auxiliary blower 500 is discharged to the air outlet 320 after passing through the hot air passage P2.

As described above, the cold air passage P1 through which the air blown from the main blower 400 flows and the warm air passage P2 through which the air blown from the auxiliary blower 500 flows are formed in the air conditioning case 300 At this time, the cold air passage P1 and the warm air passage P2 are merged in the mixing region MC.

In addition, a temperature control door 350 for controlling the opening of the cold air passage P1 is installed in the cold air passage P1 on the downstream side of the evaporator 140. [

The temperature control door 350 is installed at the upper end of the heater core 210 to control the amount of cool air passing through the cool air passage P1, It is mixed with warm air and discharged to the inside of the vehicle, thereby controlling the temperature of the inside of the vehicle to an appropriate temperature.

The temperature control door 350 may be provided with various types of doors such as a flat type door or a dome type door.

A first outlet 330 for discharging the air having passed through the evaporator 140 to the outside and a second outlet 330 for opening and closing the first outlet 330 are provided on the downstream side of the evaporator 140 of the cold air passage P1, (331)

A second outlet 340 for discharging the air that has passed through the heater core 210 to the outside and a second opening 340 for opening and closing the second outlet 340 are provided on the downstream side of the heater core 210 of the warm air passage P2, (341).

The first opening and closing door 331 opens the first outlet 330 in the heating mode and discharges the cold air passing through the evaporator 140 through the first outlet 330. The second opening / closing door 341 closes the second outlet 340)

That is, in the heating mode, since the heat source of the main condenser 110 is used for heating, the refrigeration cycle continues to operate. Therefore, the cold air passing through the evaporator 140, which is unnecessary in the heating mode, And discharging it to the outside. Of course, a part of the cold air may be supplied to the mixing area MC through the adjustment of the temperature control door 350.

The second opening and closing door 341 opens the second outlet 340 in the cooling mode and discharges hot air passing through the heater core 210 to the outside through the second outlet 340 (At this time, the first opening and closing door 331 closes the first outlet 330)

That is, in the cooling mode, unnecessary hot air passing through the heater core 210 is discharged to the outside through the second outlet 340.

Of course, the second opening / closing door 341 can control not only the opening and closing of the second outlet 340, but also the amount of the hot air passing through the hot air passage P2, A part of the warm air can be supplied to the mixing area MC.

In this way, the air passing through the evaporator 140 and the heater core 210 flows into the car according to the external environment, and unnecessary air is discharged to the outside of the car.

On the other hand, the heat radiation through the heater core 210 is selectively performed as needed, and the heat radiation of the heater core 210 is controlled by the air volume of the auxiliary blower 500.

11, the main air blower 400 is connected to an upstream side of the cold air passage P1 of the air conditioner case 300, The auxiliary blower 500 is connected to the upstream side of the warm air passage P2 of the air conditioner 300.

The cool air passage P1 and the warm air passage P2 are partitioned by a partition wall 305. An evaporator 140 is installed in the cool air passage P1 and a heater core 210 is provided in the warm air passage P2. Respectively.

The air volume of the cold air passage P1 is controlled by the main blower 400 and the air volume of the hot air passage P2 is controlled by the auxiliary blower 500. [

A temperature control door 350 is provided at a point where the cool air passage P1 and the warm air passage P2 are joined to adjust the mixing amount of the cold air and the warm air to control the temperature.

In addition, a plurality of air outlets 320 are formed on the downstream side of the mixing region MC where the cool air and the warm air are mixed.

A first outlet (not shown) and a first opening / closing door (not shown) are installed on the side of the cold air passage P1 of the air conditioning case 300 to discharge the cold air having passed through the evaporator 140 in the heating mode to the outside And a second outlet port (not shown) and a second opening / closing door (not shown) are provided on the side of the hot air passage P2 of the air conditioning case 300 to discharge the hot air passing through the heater core 210 in the cooling mode to the outside Respectively.

The main blower 400 is provided with a blowing fan 430 for blowing air to the inlet side of the air conditioning case 300 and a blower fan 430 is disposed on the upstream side of the blowing fan 430, And outdoor air inflow ports 421 and 422 are provided.

The main blower 400 includes a scroll case 410 on which the blowing fan 430 is installed and an intake duct 421 on the side of the scroll case 410 and formed with an air inlet 421 and an outside air inlet 422. [ (420).

The intake duct 421 is opened inside the intake duct 420 to open and close the inside and outside air inlets 421 and 422 to open the inside air inlet 421 in the inside air mode and the outside air inlet 422 .

Meanwhile, the outlet of the scroll case 410 of the main blower 400 is connected to the inlet 310 of the air conditioner case 300.

Therefore, when the blowing fan 430 is operated, air is sucked through the inflow inlet 421 or the outside air inlet 422 opened by the inside / outside switching door 425, and the sucked air is introduced into the scroll case 410 To the air conditioner case 300. The air-

4, the main blower 400 is schematically shown.

11, the scroll casing 410 of the main blower 400 is disposed on the side of the inlet 310 of the air conditioner case 300 with the scroll casing 410 disposed on the upper side of the evaporator 140 .

An intake duct 420 assembled in one side of the scroll case 410 (axial direction of the blowing fan 430) is shown in FIG.

7 is a cross-sectional view of the intake duct. The inflow inlet 421 and the outside air inlet 422 are formed and an inside / outside switching door 425 for opening / closing the inside / outside air inflow ports 421, .

The air introduced through the inner and outer air inflow ports 421 and 422 is sucked to the blowing fan 430 side of the scroll case 410 through the outlet 423 of the intake duct 420.

The auxiliary blower 500 is provided with a blowing fan 510 and is installed on the upstream side of the heater core 210 of the hot air passage P2 so as to blow wind toward the hot air passage P2 .

On the other hand, the auxiliary blower 500 can be configured to suck in the outside air or the outside air.

The auxiliary condenser 120 is installed in the refrigerant circulation line R between the main condenser 110 and the expansion means 130 and is connected to the refrigerant discharged from the main condenser 110 and the evaporator 140, The outdoor air flowing into the outdoor air inlet 422 is heat-exchanged.

The auxiliary condenser 120 is composed of an air-cooled heat exchanger.

The auxiliary condenser 120 may be disposed at any position on the upstream side of the evaporator 140 in the air flow direction. In the present invention, the auxiliary condenser 120 is modularly disposed on the lower side of the cowl top cover 601.

Specifically, the auxiliary condenser 120 is installed on the outside air inlet 422 side of the main blower 400.

One side of the outside air inlet 422 is provided with an outside air outlet 650 for discharging the air that has passed through the auxiliary condenser 120 to the outside and an opening and closing door 660 for opening and closing the outside air outlet 650 do.

Therefore, in the heating mode, the opening / closing door 660 closes the outside air outlet 650 and operates in the outside air mode, and the air (outdoor air) whose temperature has risen while passing through the auxiliary condenser 120 is sent to the evaporator 140 It is possible to solve the problem of congestion occurring in the evaporator 140 under the ambient temperature condition of 0 ° C or lower and the heating performance and efficiency can be improved by increasing the PH diagram of the refrigeration cycle.

In addition, in the cooling mode, the opening / closing door 660 opens the outside air outlet 650 and operates in the indoor mode, so that the air whose temperature has risen while passing through the auxiliary condenser 120 is discharged to the outside of the vehicle, Can be prevented from being lowered.

In the figure, the inside / outside switching door 425 for opening / closing the inside / outside air inlet openings 421 and 422 and the opening / closing door 660 for opening / closing the outside air outlet opening 650 are shown integrally, Alternatively, the indoor / outdoor switching door 425 and the opening / closing door 660 may be provided on the same plane to be individually operated.

7, the inside / outside switching door 425 may be provided in the intake duct 420 and the outside air outlet 650 and the opening / closing door 660 may be provided in the separate condenser module 600. [

7 is a block diagram of the auxiliary condenser 120. The condenser module 600 having the auxiliary condenser 120 is installed at the outside air inlet 422 of the main blower 400. FIG.

The condenser module 600 is disposed below the cowl top cover 601 mounted between the windshield glass 602 of the vehicle and the engine hood (not shown) and is connected to the outside air inlet 422, The outside air sucked through the cowl top cover 601 is guided to the outside air inlet 422 and introduced therein.

At this time, the cowl top cover 601 is provided with a grill hole 603 for allowing outside air to flow therein.

The condenser module 600 is installed to connect the cowl top cover 601 and the outside air inlet 422 in a communicating manner and includes a heating passage P3 in which the auxiliary condenser 120 is installed, A bypass passage P4 for bypassing the bypass passage P4 and a bypass passage P4 for bypassing the bypass passage P4 are provided in the condenser case 610. The bypass passage P4 bypasses the bypass passage P4, And an adjusting door 620 for adjusting the opening degree.

At this time, the inlet side of the condenser case 610 is connected to the grill hole 603 of the cow top cover 601, and the outlet side is connected to the outside air inlet 422.

The outside air flowing into the grill hole 603 of the cowl top cover 601 flows into the condenser case 610 and then is heated while passing through the auxiliary condenser 120 through the heating passage P3, And then flows into the outside air inlet 422.

Of course, when the control door 620 closes the heating passage P3, the outside air introduced into the grill hole 603 of the cowl top cover 601 passes through the bypass passage P4 of the condenser case 610 The auxiliary condenser 120 is bypassed and then flows into the outside air inlet 422.

The internal and external switching doors 425 of the intake duct 420 and the control door 620 of the condenser case 610 may be configured in various manners. For example, the internal and external switching doors 425, (620) may be interlocked with each other, or they may be integrally formed.

The condenser case 610 is connected to the heating passage P3 through an outer air discharge port 650 for discharging outside air passing through the auxiliary condenser 120 to the outside of the vehicle or the engine room, And an opening / closing door 660 for opening and closing.

The outside air outlet 650 is communicated with the outside of the vehicle or the engine room or the drain with the duct 651.

Thus, the air whose temperature is increased while passing through the auxiliary condenser 120 in the cooling mode is discharged to the outside of the vehicle, the engine room, or the drainage passage through the outside air outlet 650, thereby preventing the cooling performance from being lowered. In the cooling mode, the control door 620 closes the heating passage P3, and the opening / closing door 660 opens the outside air outlet 650.

Meanwhile, if the air passing through the auxiliary condenser 120 is discharged to the engine room or the drainage passage through the outside air discharge port 650, it is possible to prevent the discharged air from flowing back to the upstream side of the auxiliary condenser 120 .

A drain portion 611 is formed on the bottom of the condenser case 610 to discharge water (rainwater or the like) flowing into the condenser case 610.

The drain portion 611 is formed at the bottom of the heating passage P3 on the upstream side of the auxiliary condenser 120 in the condenser case 610 so that rainwater flows into the condenser case 610 through the cowl top cover 601 So that it is drained smoothly through the drain portion 611 when it flows.

An air blower 630 is installed on the downstream side of the auxiliary condenser 120 in the heating passage P3 of the condenser case 610. When the blower 630 is operated, (P3), and passes through the auxiliary capacitor 120. [0053]

Of course, since the condenser module 600 is disposed at the lower portion of the cowl top cover 601, running air flows into the condenser case 610 through the cowl top cover 601 when the vehicle is traveling.

That is, since the traveling wind can be used at the time of traveling the vehicle, the blower 630 can be selectively stopped.

In addition, the condenser module 600 is disposed at the lower portion of the cowl top cover 601 and is located outside the engine room, so that contaminants from the engine room can be prevented from entering the car interior. Is modularized and simplified as in the case of the capacitor module 600, thereby improving the vehicle mountability and making it possible to share the same.

A partition wall 615 for partitioning the bypass passage P4 and the heating passage P3 is formed in the condenser case 610. The bypass passage P4 and the heating passage P3 are arranged up and down with the partition wall 615 therebetween as shown in Fig.

That is, a bypass passage P4 is formed above the partition wall 615, and a heating passage P3 is formed below the partition wall 615. As shown in FIG.

12 to 14, the heating passage P3 and the bypass passage P4 may be formed in the left and right sides of the partition wall 615, Left and right in the vehicle width direction).

That is, a heating passage P3 is formed on the left side of the spherical wall 615, and a bypass passage P4 is formed on the right side of the partition wall 615.

13, two doors 625 and 626 are provided, and one door 625 is provided on the downstream side of the auxiliary condenser 120 of the heating passage P3, so that the air passing through the auxiliary condenser 120 Thereby adjusting the flow direction of the fluid.

That is, in the heating mode, the air passing through the auxiliary condenser 120 is controlled to flow to the outside air inlet 422, and in the cooling mode, the air passing through the auxiliary condenser 120 is discharged to the outside of the vehicle or the engine room .

The other one door 626 is provided on the side of the bypass passage P4 so that outside air is introduced into the bypass passage P4 when the door 626 is opened, And flows to the outside air inlet 422 after passing.

The water pump 200, the water-cooled radiator 220, the cooling water circulation line W, and the cooling water circulation line W are connected to each other. Configuration is an additional component that is mounted on an environmentally friendly vehicle)

Hereinafter, the operation of the air conditioner for a vehicle according to the present invention will be described.

First, the refrigerant circulation process will be described. The gaseous refrigerant of high temperature and high pressure, which is compressed and discharged by the compressor 100, flows into the main condenser 110.

The gaseous refrigerant flowing into the main condenser 110 is heat-exchanged with the cooling water circulating in the cooling water circulation line W. In this process, the refrigerant is cooled and changed into a liquid phase.

The cooling water circulating in the cooling water circulation line W is heated by the heat exchange with the high temperature refrigerant of the main condenser 110 and is supplied to the heater core 210, The air flowing through the warm air passage P2 of the air conditioning case 300 is heated.

Subsequently, the liquid refrigerant discharged from the main condenser 110 flows into the auxiliary condenser 120 and is further cooled (supercooled) through heat exchange with the outside air. Subsequently, the liquid refrigerant flows into the expansion means 130, do.

The refrigerant introduced into the evaporator 140 flows into the cold air passage P1 of the air conditioner case 300. The refrigerant introduced into the evaporator 140 flows into the cold air passage P1 of the air conditioner case 300, Exchanges heat with the air flowing in the evaporator and cools the air by an endothermic action due to the latent heat of evaporation of the refrigerant.

The low-temperature low-pressure refrigerant discharged from the evaporator 140 flows into the compressor 100, and then recycles the cycle as described above.

Next, a description will be given of the air flow process in the cooling mode and the heating mode.

end. In the cooling mode (Figs. 5 and 8)

5 and 8, the inside / outside switching door 425 is switched to the inside air mode in which the inside air inlet port 421 is opened, and the opening / closing door 660 opens the outside air outlet 650 , The control door 620 closes the outlet of the heating passage P3.

The first opening and closing door 331 closes the first outlet 330. The second opening and closing door 341 opens the second outlet 340. The temperature control door 350 opens the cold air passage P1, .

In addition, the main blower 400 and the auxiliary blower 500 are operated.

Therefore, after the main blower 400 is operated, the indoor air flows through the indoor air inlet port 421 and is blown to the air conditioner case 300.

The air blown into the air conditioning case 300 is exchanged with the evaporator 140 through the cold air passage P1 to be changed into cool air and then discharged to the inside of the vehicle through the air outlet 320 to cool the inside of the vehicle .

The ambient air flowing through the condenser case 610 to the outside air inlet port 422 passes through the auxiliary condenser 120 and is heat-exchanged to be discharged to the outside of the vehicle or the engine room through the outside air outlet port 650 do.

The air blown from the auxiliary blower 500 to the hot air passage P2 is heated by the heater core 210 to be converted into hot air due to the operation of the auxiliary blower 500, And is discharged to the outside through the second outlet 340.

On the other hand, in the cooling mode, the refrigerant condensed while being cooled in the main condenser 110 is supercooled by heat exchange with the outside air in the auxiliary condenser 120, and then supplied to the expansion means 130 and the evaporator 140 , The cooling performance can be further improved.

I. In the heating mode (Figs. 6 and 9)

In the heating mode, the inside / outside switching door 425 is switched to the outside air mode in which the outside air inlet 422 is opened as shown in FIGS. 6 and 9, and the opening / closing door 660 closes the outside air outlet 650 , The control door 620 closes the bypass passage P4.

The first opening and closing door 331 opens the first outlet 330. The second opening and closing door 341 closes the second outlet 340. The temperature control door 350 opens the cold air passage P1, Lt; / RTI >

In addition, the main blower 400 and the auxiliary blower 500 are operated.

Therefore, the outside air flowing to the outside air inlet port 422 through the condenser case 610 due to the operation of the main blower 400 is heat-exchanged while passing through the auxiliary condenser 120, 300).

The outside air blown to the air conditioning case 300 is exchanged with the evaporator 140 through the cool air passage P1 to be converted into cool air and then discharged to the outside through the first outlet 330. [

In addition, due to the operation of the auxiliary blower 500, the air blown from the auxiliary blower 500 to the hot air passage P2 is heated while passing through the heater core 210 to be changed into a hot air, And is discharged to the inside of the car through the discharge port 320 to heat the inside of the car.

As described above, in the heating mode, since the air having passed through the auxiliary condenser 120 and having a raised temperature is supplied to the evaporator 140, the problem of congestion that occurs in the evaporator 140 at an ambient temperature of 0 ° C or less is solved, So that the heating performance and efficiency are improved.

10, a part of the outside air flowing into the condenser case 610 passes through the auxiliary condenser 120 and is heat-exchanged to increase the temperature. Then, through the outside air outlet 650 The air is exhausted to the outside of the vehicle or the engine room and a part thereof bypasses the auxiliary condenser 120 through the bypass passage P4 and then flows into the outside air inlet 422 and is blown into the air conditioning case 300.

100: compressor 110: main condenser
120: auxiliary capacitor 130: expansion means
140: Evaporator 200: Water pump
210: heater core 220: water-cooled radiator
230: Direction switching valve 300: Air conditioning case
310: inlet 320: air outlet
330: first outlet 331: first opening / closing door
340: second outlet 341: second opening / closing door
350: Temperature control door 400: Main blower
410: scroll case 420: intake duct
421: Air inflow port 422: Outer air inflow port
425: Interior / Exterior switching door 430: Ventilating fan
500: auxiliary blower 510: blowing fan
600: Capacitor module 610: Capacitor case
611: drain part 615: separating wall
620: Adjustable door 630: blower
650: outside air outlet 660: opening / closing door

Claims (11)

A compressor 100 installed in a refrigerant circulation line R, a main condenser 110, an expansion means 130, an evaporator 140,
An air conditioning case 300 in which the evaporator 140 is installed,
A main blower 400 connected to the air conditioning case 300 and equipped with a blowing fan 430 and an air inlet / outlet 421 and 422 for introducing the inside / outside air to the upstream side of the blowing fan 430, The air conditioner according to claim 1,
The refrigerant circulation line R between the main condenser 110 and the expansion means 130 includes an auxiliary condenser 120 for exchanging heat between the refrigerant discharged from the main condenser 110 and the outside air flowing into the outside air inlet 422, ) Is installed,
The outside air inlet 422 of the main blower 400 guides outdoor air introduced from the outside of the vehicle to the outside air inlet 422 and a condenser module 600 having the auxiliary condenser 120 built therein is installed therein Wherein the air conditioner is a vehicle air conditioner. The method according to claim 1,
Wherein the condenser module (600) is disposed below the cowl top cover (601) of the vehicle and allows the outside air sucked through the cowl top cover (601) to flow into the outside air inlet (422) . 3. The method of claim 2,
The condenser module (600)
A heating passage P3 in which the auxiliary condenser 120 is installed and a bypass P3 for bypassing the auxiliary condenser 120 are provided inside the cowl top cover 601 and the outside air inlet 422, A condenser case 610 in which passages P4 are respectively formed,
And a control door (620) installed inside the condenser case (610) for controlling the opening degree of the heating passage (P3) and the bypass passage (P4). The method of claim 3,
An outside air discharge port 650 for discharging external air that has passed through the auxiliary condenser 120 to the outside of the vehicle or to the engine room is provided at one side of the heating passage P3 downstream of the auxiliary condenser 120, And an opening / closing door (660) for opening / closing the door. The method of claim 3,
Wherein a drain portion (611) is formed at the bottom of the condenser case (610) so as to discharge water introduced into the condenser case (610). The method of claim 3,
Wherein an air blower (630) for sucking outside air through the heating passage (P3) is provided on the downstream side of the auxiliary condenser (120) in the heating passage (P3) of the condenser case (610). The method of claim 3,
A partition wall 615 for partitioning the bypass passage P4 and the heating passage P3 is formed in the condenser case 610,
Wherein the bypass passage (P4) and the heating passage (P3) are arranged up and down with the partition wall (615) interposed therebetween. The method of claim 3,
A partition wall 615 for partitioning the bypass passage P4 and the heating passage P3 is formed in the condenser case 610,
Wherein the heating passage (P3) and the bypass passage (P4) are disposed to the left and right with the partition wall (615) therebetween. The method according to claim 1,
A heater connected to the main condenser 110 through a cooling water circulation line W so as to heat air in the air conditioning case 300 using a heat source of the main condenser 110, A core 210 is installed,
Wherein the main condenser (110) exchanges heat between the refrigerant discharged from the compressor (100) and the cooling water circulating through the cooling water circulation line (W). 10. The method of claim 9,
Wherein the cooling water circulation line (W) is provided with a water-cooled radiator (220) for cooling the vehicle electrical component and a water pump (200) for circulating the cooling water. 10. The method of claim 9,
The air conditioning case 300 is provided with a cold air passage P1 in which the evaporator 140 is installed and a warm air passage P2 in which the heater core 210 is installed, An air discharge port 320 is formed downstream of the mixing area MC where the air P2 is mixed,
Wherein an auxiliary blower (500) having a blowing fan (510) is installed on the upstream side of the heater core (210) of the warm air passage (P2) so as to blow air toward the hot air passage (P2) side. .

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