KR102597881B1 - Air conditioner for vehicle - Google Patents

Abstract

The present invention relates to an air conditioning system for a vehicle, and more specifically, as the blown air passes through the first area and the second area partitioned by the first partition, the air passing through the first area is cooled or heated and enters the vehicle interior. The air that is supplied and passes through the second area is discharged to the outdoors, making it possible to miniaturize the vehicle interior, making it easy to cool and heat the vehicle interior, and allowing outdoor air and air inside the engine room to be selectively introduced in the second area to provide heating. This relates to a vehicle air conditioning system that can improve performance.

Description

Vehicle air conditioning system {AIR CONDITIONER FOR VEHICLE}

The present invention relates to an air conditioning system for a vehicle, and more specifically, as the blown air passes through the first area and the second area partitioned by the first partition, the air passing through the first area is cooled or heated and enters the vehicle interior. The air that is supplied and passes through the second area is discharged to the outdoors, making it possible to miniaturize the vehicle interior, making it easy to cool and heat the vehicle interior, and allowing outdoor air and air inside the engine room to be selectively introduced in the second area to provide heating. This relates to a vehicle air conditioning system that can improve performance.

A typical vehicle air conditioning system includes a compressor that compresses and delivers refrigerant, a condenser that condenses the high-pressure refrigerant discharged from the compressor, an expansion means that condenses the liquefied refrigerant in the condenser and throttles it, and the expansion means. The condensed low-pressure liquid refrigerant is evaporated by heat exchange with the air blowing into the vehicle interior, and an evaporator that cools the air discharged into the interior by absorbing heat due to the latent heat of evaporation of the refrigerant is connected to the refrigerant pipe.

The evaporator is installed inside the air conditioning case installed inside the vehicle and plays a cooling role. That is, the air blown by the blower passes through the evaporator and is cooled by the latent heat of evaporation of the liquid refrigerant circulating within the evaporator. This is achieved by being discharged into the vehicle interior.

Additionally, the interior of the vehicle is heated using a heater core installed inside the air conditioning case through which engine coolant circulates, or an electric heater installed inside the air conditioning case.

Meanwhile, the condenser is installed on the front side of the vehicle and dissipates heat while exchanging heat with the air.

Recently, a heat pump system that performs cooling and heating using only a refrigeration cycle has been developed. As shown in FIG. 1, a cold air passage 11 and a warm air passage 12 are installed inside one air conditioning case 10. ) is formed to be partitioned, an evaporator 4 for cooling is installed in the cold air passage 11, and a condenser 2 for heating is installed in the warm air passage 12. At this time, an air discharge port 15 for supplying air into the vehicle interior and an air discharge port 16 for discharging air outside the vehicle interior are formed on the outlet side of the air conditioning case 10. In addition, individually operating blowers 20 are installed at each inlet side of the cold air passage 11 and the hot air passage 12.

Therefore, in the cooling mode, the cold air cooled while passing through the evaporator 4 of the cold air passage 11 is discharged into the vehicle interior through the air outlet 15 to cool the vehicle interior, and at this time, the condenser of the warm air passage 12 ( The warm air heated while passing through 2) is discharged to the outside of the vehicle through the air discharge port (16).

In the heating mode, warm air heated while passing through the condenser (2) of the hot air passage (12) is discharged into the vehicle interior through the air outlet (15) to heat it, and at this time, the evaporator (4) of the cold air passage (11) ), the cooled air is discharged outside the vehicle through the air outlet (16).

However, in the prior art, the blower 20 is provided in the cold air passage 11 and the hot air passage 12, respectively, and the air passing through the condenser 2 and the evaporator 4 according to the cooling and heating settings One problem is that, since the air must be discharged through the air discharge port, air discharge ports 16 equipped with control doors have to be formed at two locations, which inevitably increases the overall size.

In addition, the condenser 2 installed inside the air conditioning case is bound to be small in size, so condensation performance is low, causing a problem in cooling performance.

Patent 1) Republic of Korea Patent No. 10-1251206 (Title of invention: No-start air conditioner for vehicles)

The present invention was created to solve the problems described above, and the purpose of the present invention is to allow blown air to pass through the first area and the second area partitioned by the first partition while the air passing through the first area is The object is to provide an air conditioning device for a vehicle that is cooled or heated and supplied to the vehicle interior, and the air passing through the second area is discharged outdoors, which can be miniaturized and can easily perform cooling and heating of the vehicle interior.

At this time, the purpose of the present invention is to form an engine room air inlet whose opening and closing is controlled to allow air inside the engine room to flow in through the second control door, so that during maximum heating, the air inside the engine room, which has a higher temperature than the outside, is The purpose is to provide an air conditioning device for a vehicle that can improve the heating performance of an indoor heat exchanger by increasing the evaporation performance (heat absorption) of the heat exchanger.

In particular, the purpose of the present invention is to improve heating performance by not using the discharged air that has been cooled by heat exchange with the heat exchanger through the air outlet, but by supplying the air inside the engine room, which has a higher temperature, to the second area through the engine room air inlet. The goal is to provide a vehicle air conditioning system that can sufficiently secure the air conditioning system.

More specifically, the purpose of the present invention is to simultaneously blow air to the first area and the second area by a single blower, where the first area is in communication with the vehicle interior and is provided with an evaporator and an indoor heat exchanger to cool the interior. and heating is performed, the second area communicates with the outdoors, and a heat exchanger is provided inside, so that the wasted air that has passed through the heat exchanger due to the cooling and heating settings is discharged to the outdoors without a separate door, providing an air conditioning device for a vehicle that can be miniaturized. It is done.

In addition, the object of the present invention is to install it in the mounting hole of the dash panel, but inside the air conditioning case, the evaporator, heat exchanger, and blower are placed on the engine room side, and the indoor heat exchanger is placed on the interior side of the vehicle to improve mountingability, and the engine The goal is to provide a vehicle air conditioning system that can effectively utilize the space inside the room.

In addition, an object of the present invention is to provide an air conditioning device for a vehicle that can selectively supply outside air and inside air to a first area through a first control door in an air conditioning case, and to supply outside air to a second area through a second control door. It is done.

In addition, the purpose of the present invention is to provide an air conditioning device for a vehicle that can secure heating performance more quickly and effectively by further providing an auxiliary heating heat exchanger behind the indoor heat exchanger.

The air conditioning device 100 for a vehicle of the present invention includes an air conditioning case 110 including a first area A1 that communicates with the interior of the vehicle and through which wind for indoor air conditioning flows, and a second area A2 that communicates with the exterior of the vehicle; A blower 160 that delivers the wind to the first area (A1) and the second area (A2); An evaporator 130 for cooling and an indoor heat exchanger 120 for heating provided in the first area A1 of the air conditioning case 110; and a heat exchanger 140 provided in the second area (A2) of the air conditioning case 110 to condense the refrigerant during cooling and evaporate the refrigerant during heating, wherein the second area (B2) contains outdoor air. And the air inside the engine room can be selectively introduced, but the air discharged from the second area (B2) does not flow back into the second area (B2).

In addition, when the wind passing through the first area (A1) is cold wind for cooling, the vehicle air conditioning device 1000 is configured to generate a wind that passes through the second area (A2) as a wind with a temperature higher than the cold wind. It is characterized by being.

In addition, the vehicle air conditioner 1000 is configured to operate such that when the wind passing through the first area (A1) is warm wind for heating, the wind passing through the second area (A2) is wind with a lower temperature than the warm wind. It is characterized by being.

At this time, the air conditioning case 110 is hollow in a certain area of the air conditioning case 110 and has a first outdoor air inlet 114a through which outdoor air flows into the first area A1 and an internal air inlet through which indoor air flows ( 116); A first control door (191) that controls the opening and closing of the first outside air inlet (114a) and the internal air inlet (116); A second outside air inlet 114b formed in the second area B2 of the air conditioning case 110 through which outside air flows and an engine room air inlet 115 through which air inside the engine room flows into; and a second control door 192 that controls the opening and closing of the second outside air inlet 114b and the engine room air inlet 115.

In addition, the vehicle air conditioning device 100 includes the evaporator 130, the heat exchanger 140, and the blower ( 160) is characterized in that it is placed on the engine room side.

In addition, the air conditioning case 110 extends so that the side through which air is introduced corresponds to the interior introduction hollow part 2200 of the dash panel 2000, which is hollow to allow indoor air to flow in, and the first part is located on the upper side of the extended part. A first outside air inlet (114a) and a second outside air inlet (114b) are formed, and the engine room air inlet (115) is formed at the lower side of the extended portion.

In addition, the air conditioning case 110 is formed with an air outlet 117 through which the air in the second area B2 is discharged to the outdoors, and the heat exchanger 140 is located at the rear of the blower 160 in the air flow direction. It is characterized in that it is provided adjacent to the air outlet 117 of.

In addition, the vehicle air conditioning device 100 is characterized in that a blocking plate 510 is formed between the air outlet 117 of the air conditioning case 110 and the dash panel 2000 to block the air flow in the height direction. Do it as

In addition, the vehicle air conditioning device 100 is characterized in that an extension portion 520 is further formed around the blocking plate 510 extending upward.

In addition, the vehicle air conditioning device 100 guides the air discharged through the air outlet 117 on the side of the air outlet 117 adjacent to the dash panel 2000 in a direction away from the dash panel 2000. It is characterized in that a guide portion 530 is formed.

In addition, the vehicle air conditioner 100 has the second outside air inlet 114b and the air outlet 117 located at the upper and lower sides in the height direction, so that the engine is connected between the air conditioning case 110 and the dash panel 2000. An engine room air inlet passage (P1), which is a space through which air inside the room moves to the engine room air inlet 115, and a passage (P2) inside the second area (B2), which is a space inside the second area (B2). It is characterized by being formed side by side with each other.

In addition, the air conditioning case 110 is characterized in that a filter 180 is further provided behind the first control door 191 and the second control door 192 in the air flow direction.

In addition, the vehicle air conditioning device 100 is characterized in that an auxiliary heating heat exchanger 170 is further provided behind the indoor heat exchanger 120 in the air flow direction.

In addition, the vehicle air conditioning device 100 is characterized in that the blower 160 is of a single configuration and blows air to the first area (A1) and the second area (B2) at the same time.

Accordingly, in the vehicle air conditioning device of the present invention, the blown air passes through the first area and the second area partitioned by the first partition, and the air passing through the first area is cooled or heated and supplied to the vehicle interior. The air passing through area 2 is discharged to the outdoors, making it possible to miniaturize it, and has the advantage of easily cooling and heating the vehicle interior.

At this time, the vehicle air conditioning device of the present invention has an engine room air inlet whose opening and closing is controlled to allow air inside the engine room to flow in through the second control door, so that during maximum heating, the inside of the engine room, which has a higher temperature than the outside, is formed. There is an advantage in that the heating performance of the indoor heat exchanger can be further improved by using air to increase the evaporation performance (endothermic amount) of the heat exchanger.

In particular, the purpose of the present invention is to improve heating performance by not using the discharged air that has been cooled by heat exchange with the heat exchanger through the air outlet, but by supplying the air inside the engine room, which has a higher temperature, to the second area through the engine room air inlet. The goal is to provide a vehicle air conditioning system that can sufficiently secure the air conditioning system.

More specifically, the vehicle air conditioning device of the present invention blows air simultaneously to the first and second areas by a single blower, and the first area is in communication with the vehicle interior and is provided with an evaporator and an indoor heat exchanger therein. Indoor cooling and heating are performed, the second area communicates with the outdoors, and a heat exchanger is provided inside, so the waste air that passes through the heat exchanger due to the cooling and heating settings is discharged outdoors without a separate door, which has the advantage of being compact. .

In addition, the vehicle air conditioner of the present invention is mounted on the mounting hole of the dash panel, and the evaporator, heat exchanger, and blower are placed on the engine room side inside the air conditioning case, and the indoor heat exchanger is placed on the inside of the vehicle to improve mountingability. , it has the advantage of effectively utilizing the space inside the engine room.

In addition, the vehicle air conditioning device of the present invention has the advantage of being able to selectively supply outside air and inside air to the first area through the first control door in the air conditioning case, and supply outside air to the second area through the second control door. .

In addition, the vehicle air conditioning system of the present invention has the advantage of securing heating performance more quickly and effectively by further providing an auxiliary heating heat exchanger behind the indoor heat exchanger.

1 is a diagram showing a conventional vehicle heat pump system.
2 to 4 are perspective views, cross-sectional views in the AA' direction, and BB' directions, showing an air conditioning system for a vehicle according to the present invention.
Figure 5 is a diagram showing the air flow in the second area of the cross-sectional view shown in Figure 4.
Figures 6 and 7 are a perspective view and a cross-sectional view in the CC' direction showing another example of a vehicle air conditioning system according to the present invention.
8 and 9 are diagrams showing another example and air flow of a vehicle air conditioning system according to the present invention.
Figure 10 is a diagram showing another example of a vehicle air conditioning system according to the present invention.
11 and 12 are diagrams showing the cooling state of the vehicle air conditioning system according to the present invention.
13 and 14 are diagrams showing the heating state of the vehicle air conditioning system according to the present invention.
Figure 15 is a diagram showing the state of the heat pump system during dehumidifying heating of the air conditioning device according to the present invention.

Hereinafter, the vehicle air conditioning system 100 of the present invention having the above-described configuration will be described in detail with reference to the attached drawings.

The vehicle air conditioning system 100 of the present invention is provided in a vehicle, and a compressor 200, a heat exchanger 140, an expansion means 300, 150, an evaporator 130, and an indoor heat exchanger 120 are installed in a refrigerant circulation line. As an air conditioning device 100 used in the heat pump system 1000 connected to (L1), the entire heat pump system 1000 will be described again below.

FIGS. 2 to 4 are perspective views and cross-sectional views in the AA' direction and BB' direction showing the vehicle air conditioning system 1000 according to the present invention, and FIG. 5 is a diagram showing the air flow in the second area of the cross-sectional view shown in FIG. 4. am.

The vehicle air conditioning device 100 of the present invention includes an air conditioning case 110, a blower 160, an evaporator 130, an indoor heat exchanger 120, and a heat exchanger 140.

The air conditioning case 110 is a basic body forming the vehicle air conditioning device 100 of the present invention, and the remaining components are built in, and the first area A1 and the second area A2 in the vehicle width direction are formed by the partition wall 110w. ) is divided by. At this time, the first area (A1) and the second area (A2) are partitioned by the partition wall (110w) into which air flows, and the air flowing into the first area (A1) is cooled. It is cooled or heated to cool or heat the interior of the vehicle, and the air flowing into the second area (A2) communicates with the outdoors and is discarded to the outside.

The air conditioning case 110 has a first outdoor air inlet 114a and an indoor air inlet 116 formed on the side where the air of the first area A1 flows, and sets the air passing through the indoor heat exchanger 120. A temp door (110d) for mixing according to temperature is built in, and vents (111, 112, 113) through which air is discharged into the vehicle interior are formed on the side where the air in the first area (A1) is discharged. The air conditioning case 110 is arranged on the engine room side with a certain area based on the dash panel 2000 that divides the vehicle interior and the engine room, and the remaining area is placed on the vehicle interior side. The dash panel 2000 The side where the vents 111, 112, and 113 are formed through the mounting hole 2100 is provided on the interior side of the vehicle. More specifically, in the vehicle air conditioning device 100 of the present invention, the evaporator 130, heat exchanger 140, and blower 160 are disposed on the engine room side inside the air conditioning case 110.

The first outside air inlet 114a is a hollow portion of a certain area of the air conditioning case 110 through which outside air flows in, and the inside air inlet 116 is hollow so as to communicate with the inside inlet hollow portion 2200 of the dash panel 2000. This is the part where air enters the vehicle interior. At this time, the flow of the first outside air inlet 114a and the internal air inlet 116 is controlled by the first control door 191.

In addition, the side from which the air in the first area (A1) is discharged has a face vent 111, a floor vent 113, and a defrost vent 112 whose opening degrees are adjusted by each door 111, 112d, and 113d. Includes.

Meanwhile, the air conditioning case 110 has a second outdoor air inlet 114b formed on the side where the air of the second area (A2) flows in, and the air outside of the second area (A2) is formed on the side where the air of the second area (A2) is discharged. An air outlet 117 is formed through which air is discharged. In other words, all of the air flowing into the second area A2 is discharged, and there is no need to provide a separate door to control the flow at the air outlet 117.

The second outside air inlet 114b is a hollow portion of the air conditioning case 110 through which outside air flows in, and is preferably formed parallel to the first outside air inlet 114a. At this time, the flow of the second outside air inlet (114b) is controlled by the second control door (192).

In addition, in the vehicle air conditioning device 100 of the present invention, the engine room air inlet 115 is hollow. The engine room air inlet 115 is a portion of the air conditioning case 110 that is hollow in a certain area and allows air inside the engine room to flow into the second area A2, and allows outside air to flow through the second control door 192. Alternatively, the flow of air inside the engine room into the second area (A2) is controlled selectively.

In winter, when the outdoor temperature is low, the inside of the engine room is heated by the operation of various electrical components and remains higher than the outdoor temperature. The heat pump system 1000 of the present invention supplies air inside the engine room to the second area A2 through the second control door 192 during maximum heating, thereby increasing the evaporation performance (heat absorption amount) of the heat exchanger 140. ) has the advantage of being able to further increase the heating performance of the indoor heat exchanger (120).

In addition, the air conditioning case 110 extends so that the air-inflow side corresponds to the interior introduction hollow part 2200 of the dash panel 2000, which is hollow to allow indoor air to flow in, and the first part is located on the upper side of the extended part. It is preferable that the first outside air inlet 114a and the second outside air inlet 114b are formed, and the engine room air inlet 115 is formed on the lower side of the extended portion.

That is, the air inlet side of the air conditioning case 110 is hollow in the direction toward the dash panel 2000, and the first outside air inlet 114a and the second outside air inlet 114b are located on the upper side. ) is hollow, and the engine room air inlet 115 is formed at the lower side, and the first outside air inlet 114a and internal air inlet 116 of the first area A1 are connected to the first control door 191. The opening degree of the second outside air inlet 114b and the engine room air inlet 115 of the second area A2 is adjusted by the second control door 192.

Meanwhile, an engine room air inlet passage (P1) is formed between the air conditioning case 110 and the dash panel 2000, which is a passage through which air inside the engine room is introduced through the engine room air inlet 115.

The blower 160 is provided inside the air conditioning case 110 and blows air to the first area (A1) and the second area (A2). In the present invention, the blower 160 is a single component and is a blower that operates with one motor. Through this, the first area A1 and the second area A2 are blown by the operation of the blower 160. blows air at the same time.

The evaporator 130 is provided in the first area A1 inside the air conditioning case 110 and cools the air discharged into the vehicle interior. All air flowing into the first area (A1) passes through the evaporator 130. When cooling is performed, a low-temperature, low-pressure, wet-saturated refrigerant is supplied to the evaporator 130, and the air flows into the evaporator 130. ), it cools down and is discharged into the vehicle interior. Additionally, when heating is performed, refrigerant is not supplied to the evaporator 130, so the temperature does not change even if air passes through the evaporator 130.

The indoor heat exchanger 120 is provided behind the evaporator 130 in the first area A1 inside the air conditioning case 110 and heats air discharged into the vehicle interior. That is, the indoor heat exchanger 120 is a configuration for performing heating, and the Tempdoor controls cooling and heating by controlling the flow of air in the second area (A2) passing through the indoor heat exchanger 120. do.

In addition, the vehicle air conditioning device 100 of the present invention may further be provided with an auxiliary heating heat exchanger 170 behind the indoor heat exchanger 120 in the air flow direction. The auxiliary heating heat exchanger 170 is a component that performs heating together with the indoor heat exchanger 120, and can be used in various forms, including a PTC (Positive Temperature Coefficient) heating means.

The heat exchanger 140 is provided in the second area A2 inside the air conditioning case 110 and condenses the condensed refrigerant according to the cooling setting or evaporates it according to the heating setting. That is, the heat exchanger 140 is not configured to cool or heat air for actual cooling and heating, but rather condenses the refrigerant supplied to the evaporator 130 according to the cooling setting or the indoor heat exchanger according to the heating setting. The refrigerant supplied to (120) is evaporated. The flow of refrigerant according to the cooling and heating settings of the actual heat pump system 1000 and changes in the refrigerant as it passes through each configuration will be described again below.

In addition, the heat exchanger 140 is located at the rear of the blower in the air flow direction, and the heat exchanger 140 is located at the rear of the blower 140 in the air flow direction, adjacent to the air outlet 117. It is installed. In addition, the air flowing into the second area A2 through the blower 160 passes through the heat exchanger 140 and is then completely discharged to the outdoors through the air outlet 117.

That is, the first area (A1) of the air conditioning case 110 is provided with an evaporator 130 for cooling and an indoor heat exchanger 120 for heating, and the second area (A2) condenses the refrigerant during cooling. And, a heat exchanger 140 is provided to evaporate the refrigerant during heating. At this time, if the wind passing through the first area (A1) is a cold wind for cooling, the wind passing through the second area (A2) is a wind with a higher temperature than the cold wind, and the first area (A1) is a cold wind for cooling. When the wind passing through A1) is a warm wind for heating, the wind passing through the second area A2 is a wind with a lower temperature than the warm wind.

In addition, the vehicle air conditioning system 100 of the present invention may further be provided with a filter 180 at the rear of the first control door 191 and the second control door 192 in the air flow direction, and the filter 180 may be in an interchangeable form.

In addition, the vehicle air conditioning device 100 of the present invention is formed in a structure in which air discharged from the second area B2 does not flow back into the second area B2. During heating, the air that passes through the heat exchanger 140 of the second area (B2) and is discharged to the air outlet 117 exchanges heat with the heat exchanger 140 and has a lower temperature than the air inside the engine room. Accordingly, when the air discharged from the second area (B2) is supplied back to the second area (B2) through the engine room air inlet 115, the heating performance due to the introduction of high temperature engine room air There is a problem that it is difficult to fully expect an increase effect. In order to solve this problem, the vehicle air conditioning device 100 of the present invention has a structure in which air discharged from the second area B2 does not flow back into the second area B2, and can have various forms. there is.

First, in the form shown in FIGS. 2 to 5, a blocking plate 510 is connected between the air outlet 117 of the air conditioning case 110 and the dash panel 2000 to block the air flow in the height direction. An example of formation is shown. That is, the blocking plate 510 blocks the air discharged through the air outlet 117 from moving into the engine room air inlet passage P1.

Figures 6 and 7 are a perspective view and a cross-sectional view in the CC' direction showing another example of a vehicle air conditioning device 100 according to the present invention, and Figures 8 and 9 are another example of a vehicle air conditioning device 100 according to the present invention. This is a diagram showing air flow, and Figure 10 is a diagram showing another example of the vehicle air conditioning system 100 according to the present invention.

First, the shape shown in FIGS. 6 and 7 shows a shape in which an extension portion 520 extending upwardly around the circumference of the blocking plate 510 is further formed to surround the air outlet 117.

In addition, in the form shown in FIGS. 8 and 9, the air discharged through the air outlet 117 on the side of the air outlet 117 adjacent to the dash panel 2000 moves away from the dash panel 2000. An example is shown in which the guide portion 530 is formed to guide.

In addition, the form shown in FIG. 10 is an example in which the internal passage (P2) of the second area (100B), which is the space inside the second area (100B), is formed parallel to the engine room air inlet passage (P1). indicated. More specifically, in the air conditioning case 110, the second outside air inlet 114b, which is the upper part of the second area A2, and the air outlet 117, which is the lower part, are located at the upper and lower sides in the height direction. . That is, the formation position of the second outside air inlet 114b is located in an area extending upward from the area where the air outlet 117 is formed.

The vehicle air conditioning device 100 of the present invention having such a configuration can ensure sufficient heating performance by supplying high-temperature air inside the engine room to the second area A2 through the engine room air inlet 115. There is an advantage.

The vehicle air conditioning device 100 of the present invention includes the form shown in FIGS. 2 to 10, and the air discharged from the second area (A2) flows back into the engine room air inlet (A2) of the second area (A2). 115), it can be formed in a more diverse way if it has a structure that can prevent it from entering the environment.

FIG. 11 is a diagram showing an example of application of the air conditioning device 100 according to the present invention to the vehicle heat pump system 1000. The air conditioning device 100 of the present invention can be used in the heat pump system 1000.

The heat pump system 1000 includes the indoor heat exchanger 120, evaporator 130, heat exchanger 140, and blower 160 as described above, a compressor 200, and a first expansion means ( 300), and a second expansion means (150).

First, the compressor 200 is installed on the refrigerant circulation line (L1) through which the refrigerant circulates, compresses the refrigerant, and discharges it.

The indoor heat exchanger 120 is installed inside the air conditioning case 110 to exchange heat between the air inside the air conditioning case 110, that is, the air conditioning wind, and the refrigerant discharged from the compressor 200, resulting in condensation. Heating is performed by supplying heated air-conditioned air to the room.

The evaporator 130 is installed inside the air conditioning case 110 to exchange heat between the air inside the air conditioning case 110 and the refrigerant supplied to the compressor 200, and evaporates low-pressure liquid refrigerant into the room. Cooling is performed by heating the supplied air.

The heat exchanger 140 is installed inside the air conditioning case 110 to exchange heat between the refrigerant circulating in the refrigerant circulation line (L1) and air. The heat exchanger 140 condenses the refrigerant supplied to the evaporator 130 according to the cooling setting or evaporates the refrigerant supplied to the indoor heat exchanger 120 according to the heating setting.

The heat exchanger 140 is installed inside the air conditioning case 110 to exchange heat between the refrigerant circulating in the refrigerant circulation line (L1) and air. The heat exchanger 140 condenses the refrigerant according to cooling or evaporates the refrigerant according to heating.

The first expansion means 300 is installed in the refrigerant circulation line (L1) on the outlet side of the indoor heat exchanger 120 and selectively expands the refrigerant discharged from the indoor heat exchanger 120. During heating, The refrigerant is condensed in the indoor heat exchanger 120, and the heat exchanger 140 is operated to evaporate the refrigerant, thereby compressing the refrigerant to a low temperature and low pressure state. Additionally, during cooling, the first expansion means 300 bypasses the refrigerant without throttling it.

The second expansion means 150 is installed in the refrigerant circulation line (L1) at the inlet side of the evaporator 130 to expand the refrigerant supplied to the evaporator 130. During cooling, the second expansion means 150 compresses the refrigerant condensed while passing through the heat exchanger 140 to a low temperature and low pressure state and supplies it to the evaporator 130. In addition, the second expansion means 150 bypasses the refrigerant without throttling it during heating.

In addition, the vehicle heat pump system 1000 is a water-cooled condenser installed in the refrigerant circulation line (L1) on the inlet side of the first expansion means 300 outside the air conditioning case 110 to exchange heat with coolant for cooling the engine. (400) may be further provided. The water-cooled condenser 400 is a part where heat exchange occurs through cooling water flowing along the cooling water circulation line (L2) during cooling. The evaporator 130 is operated along with the indoor heat exchanger 120 and the heat exchanger 140 according to the cooling settings. ) condenses the refrigerant supplied. The coolant circulation line (L2) is provided with a radiator 3000 for cooling the coolant, and a coolant pump 5000 for circulating the coolant, and is adjacent to the radiator 3000 to blow air to the radiator 3000. A cooling fan 4000 is provided. The water-cooled condenser 400 includes a gas-liquid separator 410. In this case, the refrigerant is condensed by the water-cooled condenser 400, and the liquid refrigerant separated by the gas-liquid separator 410 is transferred to the heat exchanger ( 140), the cooling performance of the evaporator 130 can be further improved by increasing condensation performance.

In addition, the vehicle heat pump system 1000 has a bypass line L3 formed on the refrigerant circulation line L1 to bypass the second expansion means 150 and the evaporator 130, and the bypass line L3 is formed on the refrigerant circulation line L1 to bypass the second expansion means 150 and the evaporator 130. A backflow prevention valve (V) may be further provided on the line (L3) to prevent refrigerant backflow. The bypass line (L3) is configured to supply the refrigerant that has passed through the heat exchanger (140) to the compressor (200) without passing through the second expansion means (150) and the evaporator (130) during heating.

Figures 12 and 13 are diagrams showing the cooling state of the vehicle air conditioner 100 according to the present invention.

First, during maximum cooling, the refrigerant compressed while passing through the compressor 200 passes through the indoor heat exchanger 120 without heat exchange (the temp door opens the indoor heat exchanger 120 in the first area A1). blocks the flow) and condenses the high-pressure refrigerant discharged from the compressor 200 while passing through the water-cooled heat exchanger 140 and the heat exchanger 140. At this time, the first expansion means 300 bypasses the refrigerant. The condensed refrigerant is compressed in the second expansion means 150 and supplied to the evaporator 130, and the low-pressure liquid refrigerant compressed in the evaporator 130 and the air passing through the first area A1 exchange heat. Accordingly, the air discharged into the room is cooled by the endothermic action of the latent heat of evaporation of the refrigerant.

At this time, in order to increase cooling efficiency, the first control door 191 closes the first outside air inlet 114a and opens the inside air inlet 116, so that inside air flows into the first area A1 and moves to the evaporator. It is cooled by heat exchange with (130), and the second control door (192) opens the second outside air inlet (114b) to allow outside air to flow into the second area (A2) and exchange heat with the heat exchanger (140). is discharged.

Meanwhile, during cooling and dehumidification, it is the same as the cooling condition shown in FIGS. 8 and 9, but can be performed by adjusting the temperature of the air supplied to the vehicle interior by adjusting the temp door 110d.

Figures 14 and 15 are diagrams showing the heating state of the vehicle air conditioning system 100 according to the present invention.

First, during maximum heating, the refrigerant compressed by the compressor 200 is discharged into the room through heat dissipation by condensation as the air passing through the indoor heat exchanger 120 and the first area A1 is heat exchanged. heats the air. Meanwhile, the temp door is operated so that the air introduced into the first area (A1) passes through the evaporator 130 and then entirely passes through the indoor heat exchanger 120. At this time, the evaporator 130 In a state in which refrigerant is not supplied, air passes through the evaporator 130 without heat exchange. In the water-cooled condenser 400, the coolant does not flow along the coolant circulation line L2, so the refrigerant moves without change, is compressed in the first expansion means 300, and is supplied to the heat exchanger 140 to evaporate. The refrigerant evaporated while passing through the heat exchanger 140 is supplied to the compressor 200 through the bypass line L3 without passing through the second expansion means 150 and the evaporator 130.

At this time, the first control door 191 selectively opens the first outside air inlet 114a and the internal air inlet 116 to blow air into the first area A1, and the second control door 192 Closes the second outside air inlet 114b and opens the engine room air inlet 115 to allow air inside the engine room to flow into the second area A2.

Meanwhile, Figure 16 is a diagram showing the state of the vehicle heat pump system 1000 during dehumidification heating of the air conditioner 100 according to the present invention, in which air passing through the heat exchanger 140 flows through the bypass line L3. An example is shown in which heat is additionally absorbed while passing through the second expansion means 150 and the evaporator 130 instead of passing through the second expansion means 150 and the evaporator 130 to dehumidify and control the temperature.

In summary, the vehicle air conditioning device 100 of the present invention is an air conditioning device 100 used in a heat pump system, that is, an air conditioning system capable of cooling and heating with one refrigerant line. Heating uses high-temperature refrigerant compressed by the compressor 200, and cooling uses evaporation of the refrigerant. At this time, the decline in condensation performance during cooling, which is a chronic problem of the heat pump system, is solved by the heat exchanger 140 that condenses the refrigerant together with the indoor heat exchanger 120. The heat exchanger 140 is mounted in the air conditioning case 110, and receives wind from the blower 160 that generates air conditioning wind to condense the refrigerant. In other words, the overall size of the vehicle is reduced because it receives the wind from the blower 160 that generates air conditioning wind without having a separate fan or blower to blow air to the heat exchanger 140. You can do it.

The present invention is not limited to the above-described embodiments, and its scope of application is diverse, and anyone skilled in the art can understand it without departing from the gist of the invention as claimed in the claims. Of course, various modifications are possible.

1000: Heat pump system
L1: Refrigerant circulation line L2: Coolant circulation line
L3: Bypass line V: Backflow prevention valve
100: air conditioning device
A1: 1st area A2: 2nd area
110: air conditioning case 110w: bulkhead
111: face vent 111d: face vent door
112: defrost vent 112d: defrost vent door
113: floor vent 113d: floor vent door
114a: first external air inlet 114b: second external air inlet
115: Engine room air inlet
116: bet inlet
117: air outlet
120: indoor heat exchanger
130: Evaporator
140: heat exchanger
150: second expansion means
160: blowing unit
170: Auxiliary heating heat exchanger
180: filter
191: 1st control door 192: 2nd control door
200: Compressor
300: first expansion means
400: Water-cooled condenser 410: Gas-liquid separator
510: blocking plate
520 : : Extension part
530: Guide unit
P1: Air intake passage inside the engine room
P2: Second area internal passage
2000: Dash panel 2100: Installer
2200: Bet introduction hollowing out
3000: Radiator
4000: Cooling fan
5000: Coolant pump

Claims (14)

In the vehicle air conditioning device (1000),
An air conditioning case 110 including a first area A1 that communicates with the interior of the vehicle and through which wind flows for indoor air conditioning, and a second area A2 that communicates with the exterior of the vehicle;
A blower 160 that delivers the wind to the first area (A1) and the second area (A2);
An evaporator 130 for cooling and an indoor heat exchanger 120 for heating provided in the first area A1 of the air conditioning case 110; and
It includes a heat exchanger 140 provided in the second area A2 of the air conditioning case 110 to condense the refrigerant during cooling and evaporate the refrigerant during heating,
The first area (A1) and the second area (A2) are separated by a partition wall (110w),
The air flowing into the first area (A1) is cooled or heated and supplied to the interior of the vehicle,
The second area (A2) can selectively introduce outdoor air and air inside the engine room, but all air discharged from the second area (A2) is discharged outdoors,
A certain area of the air conditioning case 110 is hollow, and a first outside air inlet 114a through which outside air flows into the first area A1 and a first inside air inlet 116 through which inside air flows into the first area A1;
A first control door (191) that controls the opening and closing of the first outside air inlet (114a) and the internal air inlet (116);
A second outside air inlet 114b formed in the second area B2 of the air conditioning case 110 through which outside air flows and an engine room air inlet 115 through which air inside the engine room flows into; and
It includes a second control door (192) that controls opening and closing of the second outside air inlet (114b) and the engine room air inlet (115),
The air conditioning case 110 is hollow to allow indoor air to flow in and extends to correspond to the interior introduction hollow portion 2200 of the dash panel 2000 that divides the vehicle interior and the engine room,
The first outside air inlet 114a and the second outside air inlet 114b are formed on the upper side of the extended portion, and the engine room air inlet 115 is formed on the lower side of the extended portion. Device.
According to paragraph 1,
The vehicle air conditioning system 1000 determines that when the wind passing through the first area (A1) is cold wind for cooling, the wind passing through the second area (A2) is wind with a temperature higher than the cold wind. Characterized by a vehicle air conditioning system.
According to paragraph 2,
The vehicle air conditioning device 1000 determines that when the wind passing through the first area (A1) is a warm wind for heating, the wind passing through the second area (A2) is wind with a temperature lower than the warm wind. Characterized by a vehicle air conditioning system.
delete According to paragraph 1,
An air conditioning system for a vehicle, wherein the evaporator 130, the heat exchanger 140, and the blower 160 are disposed on the engine room side within the air conditioning case 110, based on the dash panel 2000.
delete According to paragraph 1,
The air conditioning case 110 is formed with an air outlet 117 through which the air in the second area B2 is discharged to the outdoors, and the heat exchanger 140 distributes the air behind the blower 160 in the air flow direction. An air conditioning device for a vehicle, characterized in that it is provided adjacent to the outlet (117).
In clause 7,
The vehicle air conditioning device 1000 is characterized in that a blocking plate 510 is formed between the air outlet 117 of the air conditioning case 110 and the dash panel 2000 to block the air flow in the height direction. Vehicle air conditioning system.
According to clause 8,
The air conditioning device for a vehicle (1000) is an air conditioning device for a vehicle, characterized in that an extension portion (520) extending upward around the circumference of the blocking plate (510) is further formed.
In clause 7,
The vehicle air conditioning device 1000 has a guide unit on the side of the air outlet 117 adjacent to the dash panel 2000 to guide the air discharged through the air outlet 117 in a direction away from the dash panel 2000. An air conditioning device for a vehicle, characterized in that (530) is formed.
In clause 7,
The vehicle air conditioning device 1000 has the second outside air inlet 114b and the air outlet 117 located at the upper and lower sides in the height direction, so that the air conditioning case 110 and the dash panel 2000 are installed inside the engine room. The engine room air inlet passage (P1), which is a space through which air moves to the engine room air inlet 115, and the second area (B2) internal passage (P2), which is a space inside the second area (B2), are parallel to each other. An air conditioning device for a vehicle, characterized in that it is formed.
According to paragraph 1,
The air conditioning case (110) is an air conditioning system for a vehicle, characterized in that a filter (180) is further provided at the rear of the first control door (191) and the second control door (192) in the direction of air flow.
According to paragraph 1,
The air conditioning system for a vehicle (1000) is characterized in that an auxiliary heating heat exchanger (170) is further provided behind the indoor heat exchanger (120) in the direction of air flow.
According to paragraph 1,
The vehicle air conditioning device 1000 is a blower in which the blowing unit 160 operates with one motor, and transmits the wind to the first area (A1) and the second area (A2) by the blower. A vehicle air conditioning system that uses

Images