KR102661418B1 - Heat exchanger for air conditioning system and air conditioning system having the same - Google Patents

Abstract

The present invention relates to a heat exchanger for an air conditioning device and an air conditioning device equipped with the same. By effectively managing and controlling the flow structure of refrigerant and cooling water, the number of temp doors and heat exchangers can be eliminated within the limit where the temperature control function is not limited. The purpose is to reduce or eliminate the space and driving device required for installing and operating the temp door and heat exchanger, thereby enabling miniaturization and slimming of the device.
In order to achieve this object, the present invention provides a heat exchanger for an air conditioning system that includes an indoor heat exchanger that introduces a heat medium and exchanges heat with air blown into the vehicle interior, wherein the indoor heat exchanger includes a plurality of heat exchangers each having a different flow path for each area. heat medium channels; It is equipped with a heat medium flow control valve that controls the flow of heat medium to each heat medium flow path and allows the temperature of each area of the indoor heat exchanger to be independently controlled.

Description

Heat exchanger for air conditioning equipment and air conditioning equipment equipped with the same {HEAT EXCHANGER FOR AIR CONDITIONING SYSTEM AND AIR CONDITIONING SYSTEM HAVING THE SAME}

The present invention relates to a heat exchanger for an air conditioning device and an air conditioning device equipped with the same. More specifically, the present invention relates to a heat exchanger for an air conditioning device and an air conditioning device equipped with the same. More specifically, the present invention relates to a heat exchanger with the Temp Door within the limit where the temperature control function is not limited by effectively managing and controlling the flow structure of the refrigerant and coolant. The number of units can be deleted, and through this, the space and driving device required for installation and operation of the temp door and heat exchanger are reduced or eliminated, enabling miniaturization and slimming of the device. Heat exchangers for air conditioning devices and air conditioning devices equipped with the same It's about.

Vehicles are equipped with air conditioning systems to cool and heat the interior of the vehicle. As shown in FIG. 1, this air conditioning device is equipped with a refrigerant circulation line (1) and a coolant circulation line (3).

The refrigerant circulation line (1) is equipped with a compressor (1a), an outdoor heat exchanger (1b), an expansion valve (1c), and an indoor heat exchanger (1d). When the vehicle interior is in cooling mode, the compressor (1a) By circulating the discharge refrigerant through the outdoor heat exchanger (1b), the expansion valve (1c), and the indoor heat exchanger (1d), cold air is generated in the indoor heat exchanger (1d), and the generated cold air is circulated through the internal flow path of the air conditioning case (5). It is supplied to the vehicle interior through (5a). Therefore, the car interior is cooled.

The coolant circulation line (3) circulates the heat medium, that is, coolant, between the engine (E) and the heater core (3a). In the vehicle interior heating mode, the coolant of the engine (E) is circulated between the engine (E) and the heater core (3a). By circulating the waste heat of the engine (E) to the heater core (3a) to generate heat, the generated heat is supplied to the vehicle interior through the internal passage (5a) of the air conditioning case (5). Therefore, the car interior is heated.

Meanwhile, this air conditioning device is equipped with a Temp. Door (7) installed on the internal flow path of the air conditioning case (5).

The temp door (7) is installed at the branch point of the cold air passage (5b) and the warm air passage (5c), and rotates between the cold air passage (5b) and the warm air passage (5c) to connect the cold air passage (5b) and the warm air passage (5c). Adjust the opening amount of 5c). Therefore, the amount of cold and hot air supplied into the vehicle interior is adjusted.

Meanwhile, it is an important task to miniaturize and slim the air conditioning systems of these vehicles to increase the efficiency of installation space within the vehicle.

In particular, in recent years, there has been an urgent need to miniaturize vehicles and secure interior space for the convenience of passengers, and in response to this trend, miniaturizing and slimming air conditioning devices has become an important task.

As a method of miniaturizing and slimming the air conditioning device, there is a method of reducing unnecessary space by improving the internal structure of the air conditioning case (5).

In particular, among the various parts installed inside the air conditioning case 5, the space required to install the specific part can be reduced or eliminated by deleting a specific part within the limit of the function that is not limited, and through this, the air conditioning device can be miniaturized and slimmed.

Therefore, it is important to improve the internal structure of the air conditioning case (5), remove specific parts within the limit where the function is not limited, and thereby reduce the internal space of the air conditioning case (5) to miniaturize and slim the air conditioning device. do.

The present invention was devised to solve the above-described conventional problems, and its purpose is to effectively manage and control the flow structure of refrigerant and coolant, thereby increasing the number of temp doors and heat exchangers within the limit where the temperature control function is not limited. The aim is to provide a heat exchanger for an air conditioning device that can eliminate and an air conditioning device equipped with the same.

Another object of the present invention is to configure the number of TEMP doors and heat exchangers to be deleted within the limit where the temperature control function is not limited, so that the space required to install the TEMP doors and heat exchangers and the driving device required to operate the TEMP doors are reduced. The aim is to provide a heat exchanger for an air conditioning device that can be reduced or eliminated and an air conditioning device equipped with the same.

Another object of the present invention is to reduce or eliminate the space required to install the TEMP door and heat exchanger and the driving device required to operate the TEMP door, thereby enabling miniaturization and slimming of the air conditioning device and reducing manufacturing costs. The goal is to provide a heat exchanger for an air conditioning device that can save money and an air conditioning device equipped with the same.

In order to achieve this purpose, the heat exchanger for an air conditioning device according to the present invention and an air conditioning device equipped with the same are a heat exchanger for an air conditioning device including an indoor heat exchanger that introduces a heat medium and exchanges heat with air blown into the vehicle interior, The indoor heat exchanger includes a plurality of heat medium passages each having a different flow path for each area; It is characterized by including a heat medium flow control valve that controls whether the heat medium flows to each of the heat medium passages, thereby independently controlling the temperature of each area of the indoor heat exchanger.

Preferably, the heat medium passages are formed to correspond to the left passage portion of the air conditioning case for supplying air to the driver's seat portion in the vehicle interior, so that the temperature of the driver's seat blowing air in the vehicle interior can be independently adjusted. a first heat medium flow path in the left area of the heat exchanger; A second heat medium passage in the right area of the interior heat exchanger, which is formed to correspond to the right passage part of the air conditioning case for supplying air to the passenger seat portion of the vehicle interior, and is capable of independently controlling the temperature of the blowing air on the passenger seat portion of the vehicle interior. It is characterized by including.

And the heat medium flow control valve controls the introduction of heat medium into either or both of the first and second heat medium passages in accordance with an applied control signal to independently adjust the temperature of each area of the indoor heat exchanger. It is characterized by controlling or controlling the same.

In addition, the heat medium passages of the indoor heat exchanger are characterized in that each inlet is branched differently, but the outlet has a common structure.

and a fluid pump that circulates heat medium in heat medium passages of the indoor heat exchanger; The fluid pump is characterized in that its rotation speed varies according to an applied control signal and controls the flow amount of heat medium circulating in the indoor heat exchanger to control the heating temperature of the indoor heat exchanger.

And a refrigerant circulation line that circulates the refrigerant between the compressor, the outdoor heat exchanger, the expansion valve, and the refrigerant-coolant chiller to generate cold air in the refrigerant-coolant chiller; In the cooling mode or dehumidifying mode in the vehicle interior, the coolant is circulated between the refrigerant-coolant chiller and the indoor heat exchanger, and the cold air from the refrigerant-coolant chiller side is transferred to the indoor heat exchanger to cool the blowing air in the vehicle interior. It is characterized by including a first coolant circulation line that allows.

And a second coolant circulation line that withdraws coolant from the engine, circulates it through a preset path, and then returns it; When the vehicle interior is in a heating mode, the second coolant circulation line and the first coolant circulation line are installed between the second coolant circulation line and the first coolant circulation line so that the second coolant circulation line can be connected to one coolant circulation circuit. Further comprising a directional flow control valve; The four-way flow control valve is capable of heating the blowing air in the vehicle interior when the second coolant circulation line coolant drawn from the engine is circulated to the interior heat exchanger through the first coolant circulation line during the vehicle interior heating mode. It is characterized by being able to exist.

According to the heat exchanger for air conditioning system according to the present invention and the air conditioning system equipped with the same, by improving the flow structure of refrigerant and coolant, only one indoor heat exchanger is used to enter the vehicle interior without a separate temp door and a large number of indoor heat exchangers. It has the effect of controlling the temperature of the blown air.

In addition, since the temperature of the blowing air inside the vehicle interior can be controlled with just one interior heat exchanger, the temperature inside the vehicle interior can be controlled even by reducing the number of heat exchangers inside the vehicle interior and removing the temp door.

In addition, since the number of heat exchangers inside the cabin can be reduced and the temperature inside the car can be controlled even by removing the TEMP door, the space required to install the TEMP door and heat exchanger and the driving device required to operate the TEMP door can be reduced or eliminated. There is a possible effect.

In addition, the space required to install the TEMP door and heat exchanger and the driving device required to operate the TEMP door can be reduced or eliminated, so each part can be placed densely, which has the effect of miniaturizing and slimming the air conditioning system. There is.

In addition, by improving the flow structure of the refrigerant and coolant, and improving the structure of the indoor heat exchanger, the left and right blowing air temperatures in the vehicle interior can be independently controlled with only one indoor heat exchanger without separate left and right temp doors. There is an effect.

In addition, since the left and right blowing air temperatures in the vehicle interior can be adjusted independently with a single interior heat exchanger, the left and right temperature in the vehicle interior can be controlled independently even if separate left and right temp doors are removed. there is.

In addition, the temperature on the left and right sides of the vehicle interior can be controlled independently even by removing the separate left and right Temp doors, reducing the space required to install the left and right Temp doors and the driving device required to operate the left and right Temp doors. can be eliminated, and this has the effect of miniaturizing and slimming the device.

In addition, since the device can be miniaturized and slimmed, manufacturing costs can be reduced.

1 is a diagram showing a conventional heat exchanger for an air conditioning device and an air conditioning device equipped therewith;
2 is a diagram showing a first embodiment of a heat exchanger for an air conditioning device and an air conditioning device equipped therewith according to the present invention;
3 is an operational diagram showing an operation example of the first embodiment, and shows how the refrigerant circulation line and the first coolant circulation line cool the interior of the vehicle through a water-cooling heat transfer method in the cooling mode;
4 is an operational diagram showing an operation example of the first embodiment, in which the refrigerant circulation line and the first coolant circulation line dehumidify the interior of the vehicle through a water-cooled heat transfer method in the dehumidification mode;
Figure 5 is an operational diagram showing an operation example of the first embodiment, showing how the second coolant circulation line and the first coolant circulation line are connected into one coolant circulation circuit to heat the interior of the vehicle in the heating mode;
Figure 6 is an operational diagram showing an operation example of the first embodiment, which shows how coolant is circulated in the left area of the interior heat exchanger to independently cool and heat the corresponding driver's seat portion in the vehicle interior;
Figure 7 is an operational diagram showing an operation example of the first embodiment, which shows how coolant is circulated in the right area of the interior heat exchanger to independently cool and heat the corresponding passenger seat part of the vehicle interior;
Figure 8 is an operational diagram showing an operation example of the first embodiment, which shows cooling and heating of the driver's seat and passenger's seat at the same temperature in the vehicle interior by simultaneously circulating coolant in the left and right areas of the indoor heat exchanger;
9 is a view showing a second embodiment of a heat exchanger for an air conditioning device and an air conditioning device equipped with the same according to the present invention;
FIG. 10 is an operational diagram showing an operation example of the second embodiment, in which engine coolant is simultaneously introduced into the auxiliary indoor heat exchanger and the indoor heat exchanger in the heating mode to heat the interior of the vehicle;
Figure 11 is an operational diagram showing an operation example of the second embodiment. In the cooling mode, the introduction of engine coolant to the auxiliary indoor heat exchanger is restricted, and the flow of coolant in the first coolant circulation line to the indoor heat exchanger is permitted, thereby achieving indoor heat exchange. A diagram showing how the machine cools the interior of the vehicle by receiving cold air from the refrigerant circulation line,
Figure 12 is an operational diagram showing an operation example of the second embodiment. In the dehumidifying mode, introduction of engine coolant to the auxiliary indoor heat exchanger is allowed, and coolant from the first coolant circulation line is allowed to flow to the indoor heat exchanger, thereby maintaining the auxiliary indoor heat exchanger. This diagram shows the heat exchanger receiving waste heat from engine coolant to heat the vehicle interior, and the indoor heat exchanger receiving cold air from the refrigerant circulation line to dehumidify the vehicle interior.

Hereinafter, preferred embodiments of a heat exchanger for an air conditioning device and an air conditioning device equipped therewith according to the present invention will be described in detail based on the attached drawings.

[First Embodiment]

First, the heat exchanger for an air conditioning device of the present invention and an air conditioning device equipped with the same, as shown in FIG. 2, have a refrigerant circulation line 10, a first coolant circulation line 20, and a second coolant circulation line 30. Equipped with

The refrigerant circulation line (10) is equipped with a compressor (12), an outdoor heat exchanger (14), an expansion valve (15), and a refrigerant-coolant chiller (16). In the cooling mode inside the vehicle, the compressor ( By circulating the discharged refrigerant from 12) through the outdoor heat exchanger (14), the expansion valve (15), and the refrigerant-coolant chiller (16), cold air is generated in the refrigerant-coolant chiller (16).

The first coolant circulation line 20 is equipped with an indoor heat exchanger 22 and a fluid pump 24, and circulates coolant (heat medium) between the refrigerant-coolant chiller 16 and the indoor heat exchanger 22. .

In particular, as shown in FIG. 3, in the vehicle interior cooling mode, coolant is circulated between the refrigerant-coolant chiller 16 and the indoor heat exchanger 22. Therefore, the cold air generated in the refrigerant-coolant chiller 16 of the refrigerant circulation line 10 is delivered to the coolant of the first coolant circulation line 20, and the coolant receiving the cold air is circulated to the indoor heat exchanger 22. As a result, the air in the internal passage (5a) of the air conditioning case (5), which is blown into the vehicle interior, is cooled. In this way, the interior of the car is cooled.

Here, the refrigerant circulation line 10 and the first coolant circulation line 20 are operated even in the dehumidifying mode in the vehicle interior, as shown in FIG. 4. The refrigerant circulation line 10 and the first coolant operated in this way The circulation line 20 generates cold air from the refrigerant-coolant chiller 16, and the cold air generated from the refrigerant-coolant chiller 16 passes through the coolant of the first coolant circulation line 20 to the indoor heat exchanger 22. ), and the cold air delivered to the indoor heat exchanger (22) can dehumidify the air in the internal passage (5a) of the air conditioning case (5), which is blown into the vehicle interior.

Typically, in the dehumidifying mode in the vehicle interior, the PTC heater (H) installed in the internal passage (5a) of the air conditioning case (5) operates to heat the air blown into the vehicle interior.

Referring again to FIG. 2, the second coolant circulation line 30 draws coolant from the engine (E) side, circulates it through a preset path, and then returns it, and transfers the drawn coolant to the first coolant circulation line ( 20) It is equipped with a four-way flow control valve (32) that can circulate to the side.

In particular, as shown in FIG. 5, the four-way flow control valve 32 operates the second coolant circulation line 30 and the first coolant circulation line 20 into one coolant circulation system in the vehicle interior heating mode. Connect to a circuit.

Therefore, in the heating mode inside the vehicle interior, the engine coolant drawn out to the second coolant circulation line 30 is introduced into the first coolant circulation line 20 and can be circulated to the interior heat exchanger 22, and the interior heat exchanger is performed. The engine coolant circulating in the air conditioner (22) heats the air in the internal passage (5a) of the air conditioning case (5), which is blown into the vehicle interior. This makes it possible to heat the vehicle interior.

Referring again to FIG. 2, the heat exchanger for an air conditioning device of the present invention and the air conditioning device equipped therewith have the feature that the fluid pump 24 of the first coolant circulation line 20 is configured in a variable manner.

The variable fluid pump 24 has its rotation speed automatically adjusted according to the applied control signal, and adjusts the flow amount of coolant circulating in the indoor heat exchanger 22, and through this, the indoor heat exchanger 22. Adjust the temperature.

In particular, in the cooling mode, the flow amount of the cooling water that receives the cold air from the refrigerant circulation line (10) toward the indoor heat exchanger (22) is adjusted. Therefore, in the cooling mode, the temperature of the interior heat exchanger 22 can be adjusted, and through this, the temperature of the air blown into the vehicle interior is adjusted. As a result, in cooling mode, the temperature inside the vehicle can be adjusted without a separate temp door (see FIG. 1).

Additionally, in the heating mode, the flow amount of the coolant receiving heat from the engine coolant in the second coolant circulation line 30 to the indoor heat exchanger 22 is adjusted. Therefore, in the heating mode, the temperature of the interior heat exchanger 22 can be adjusted, and through this, the temperature of the air blown into the vehicle interior is adjusted. As a result, in the heating mode, the temperature inside the vehicle can be adjusted without a separate temp door (see FIG. 1).

Referring again to FIG. 2, the heat exchanger for an air conditioning device of the present invention and an air conditioning device equipped therewith include an indoor heat exchanger (22) of a first coolant circulation line (20), wherein the indoor heat exchanger (22) is equipped with a plurality of heat medium passages 22a and 22b each having a different circulation path for each area.

The heat medium passages 22a and 22b for each area are for interior heat exchange corresponding to the left passage portion 5a-1 for supplying air to the driver's seat side of the vehicle interior among the internal passages 5a of the air conditioning case 5. The first heat medium passage 22a in the left area of the engine 22 and the second heat medium passage 22a in the right area of the indoor heat exchanger 22 corresponding to the right passage part 5a-2 for supplying air to the passenger seat side of the vehicle interior. Includes a heat medium flow path (22b).

As shown in FIG. 6, in the cooling/heating mode, the first heat medium passage 22a independently supplies coolant that has received cold air from the refrigerant circulation line 10 or heat from the second coolant circulation line 30. Introduced, the air blown to the driver's seat side of the vehicle interior along the left flow path portion 5a-1 of the air conditioning case 5 is independently cooled or heated through the introduced coolant.

Therefore, in the cooling and heating modes, the temperature of the air supplied to the driver's seat inside the vehicle can be independently adjusted. As a result, the driver's seat inside the vehicle is independently cooled and heated.

As shown in FIG. 7, in the cooling/heating mode, the second heat medium passage 22b independently cools the coolant that has received the cold air of the refrigerant circulation line 10 or the heat of the second coolant circulation line 30. The air blown to the passenger seat side of the vehicle interior along the right flow path portion 5a-2 of the air conditioning case 5 is independently cooled or heated through the introduced coolant.

Therefore, in the cooling and heating modes, the temperature of the air blown to the passenger side of the vehicle interior can be adjusted independently. As a result, the passenger seat part of the vehicle interior is independently cooled and heated.

In addition, the first and second heat medium passages 22a and 22b, in the cooling and heating mode, use cold air in the refrigerant circulation line 10 or hot air in the second coolant circulation line 30, as shown in FIG. The received coolant is introduced at the same time, and the air blown through the introduced coolant to the driver's seat and passenger's seat inside the vehicle along the left passage part (5a-1) and the right passage part (5a-2) of the air conditioning case (5) is It can also be cooled or heated at the same time.

Therefore, in the cooling and heating modes, the temperature of the air blown to the driver's seat and passenger's seat inside the vehicle can be adjusted to be the same. As a result, the driver's seat and passenger's seat inside the vehicle are equally cooled and heated.

Meanwhile, in the first coolant circulation line 20 on the upstream side of the indoor heat exchanger 22, the introduction of coolant into either or both of the first and second heat medium passages 22a and 22b can be controlled. A heat medium flow control valve 22c is installed.

The heat medium flow control valve 22c operates in accordance with an applied control signal to determine whether there is communication between the first and second heat medium passages 22a and 22b of the indoor heat exchanger 22 and the first coolant circulation line 20. Control.

Therefore, by controlling the coolant flow to the first and second heat medium passages 22a and 22b of the indoor heat exchanger 22, independent temperature control for each area of the indoor heat exchanger 22 is possible, and through this , Enables independent cooling and heating of the driver's seat and passenger seat inside the vehicle.

Here, the first and second heat medium passages 22a and 22b of the indoor heat exchanger 22 have a structure in which the respective inlets 22a-1 and 22b-1 branch differently from each other, but the outlets 22a-2 and 22b -2) are configured in common with each other.

Accordingly, the cooling water introduced into the first and second heat medium passages 22a and 22b is configured to be discharged through the common outlets 22a-2 and 22b-2.

According to the heat exchanger for an air conditioning device of the present invention having such a configuration and the air conditioning device equipped with the same, the flow structure of the refrigerant and coolant is effectively managed and controlled, without a separate temp door and a large number of indoor heat exchangers 22. Only one interior heat exchanger (22) can control the temperature of the air blown into the vehicle interior.

In addition, since the temperature of the blowing air inside the vehicle interior can be controlled with only one interior heat exchanger (22), the temperature inside the vehicle interior can be controlled even by reducing the number of heat exchangers inside the vehicle interior and removing the temp door.

In addition, since the number of heat exchangers inside the cabin can be reduced and the temperature inside the car can be controlled even by removing the TEMP door, the space required to install the TEMP door and heat exchanger and the driving device required to operate the TEMP door can be reduced or eliminated. You can.

In addition, the space required to install the TEMP door and heat exchanger and the driving device required to operate the TEMP door can be reduced or eliminated, so each component can be placed densely, and through this, the air conditioning device can be miniaturized and slimmed.

In addition, by effectively managing and controlling the flow structure of refrigerant and coolant and improving the structure of the indoor heat exchanger (22), the left and right temp doors in the vehicle can be heated with only one indoor heat exchanger (22) without separate left and right temp doors. The right blowing air temperature can be adjusted independently.

In addition, since the left and right blowing air temperatures in the vehicle interior can be independently controlled with a single interior heat exchanger (22), the left and right temperature in the vehicle interior can be controlled independently even if the separate left and right temp doors are removed. there is.

In addition, the temperature on the left and right sides of the vehicle interior can be controlled independently even by removing the separate left and right Temp doors, reducing the space required to install the left and right Temp doors and the driving device required to operate the left and right Temp doors. can be eliminated, and through this, miniaturization and slimming of the device is possible.

Additionally, since the device can be miniaturized and slimmed, manufacturing costs can be reduced.

[Second Embodiment]

Next, FIGS. 9 to 12 show diagrams showing a second embodiment of a heat exchanger for an air conditioning device and an air conditioning device including the same according to the present invention.

First, referring to FIG. 9, the air conditioning device of the second embodiment further includes an auxiliary indoor heat exchanger 40 installed in a rear portion of the indoor heat exchanger 22 in parallel and overlapping with each other.

The auxiliary indoor heat exchanger 40 is installed on the second coolant circulation line 30, and during the heating mode in the vehicle interior, as shown in FIG. 10, the engine coolant of the second coolant circulation line 30 is is introduced, and the interior of the vehicle is heated by heating the air blown into the vehicle interior through the introduced engine coolant.

In particular, in the heating mode inside the vehicle interior, the engine coolant of the second coolant circulation line 30 is introduced simultaneously with the interior heat exchanger 22 of the first coolant circulation line 20. Through this introduction of engine coolant, Together with the interior heat exchanger (22) of the first coolant circulation line (20), the air blown into the vehicle interior is heated more efficiently. Therefore, the heating effect inside the car is maximized.

Meanwhile, the air conditioning device of the second embodiment, according to the mode state of the air conditioning device, supplies the second coolant to the indoor heat exchanger 22 of the first coolant circulation line 20 and the auxiliary indoor heat exchanger 40. It further includes a coolant flow control unit 50 that controls whether coolant flows in the circulation line 30.

The coolant flow control unit 50 includes a first coolant flow control valve 52 installed on the first and second coolant circulation lines 30 upstream of the indoor heat exchanger 22 and the auxiliary indoor heat exchanger 40. , and a second coolant flow control valve (54) installed on the first and second coolant circulation lines (30) downstream of the indoor heat exchanger (22) and the auxiliary indoor heat exchanger (40).

The first and second coolant flow control valves 52 and 54 are 3-position, 4-way valves that, depending on the mode state inside the vehicle, supply engine coolant from the second coolant circulation line 30 to the auxiliary indoor heat exchanger 40. ) and the indoor heat exchanger 22 of the first coolant circulation line 20 at the same time, or block the introduction of engine coolant to the auxiliary indoor heat exchanger 40, or introduce it only into the auxiliary indoor heat exchanger 40. .

More specifically, in the vehicle interior heating mode, as shown in FIG. 10, the engine coolant in the second coolant circulation line 30 is transferred to the auxiliary interior heat exchanger 40 and the first coolant circulation line 20. It is simultaneously introduced into the indoor heat exchanger (22).

Therefore, in the vehicle interior heating mode, the auxiliary indoor heat exchanger 40 and the indoor heat exchanger 22 simultaneously generate heat and heat the blowing air inside the vehicle interior. This makes it possible to heat the vehicle interior.

In addition, as shown in FIG. 11, the first and second coolant flow control valves 52 and 54 limit the introduction of engine coolant into the auxiliary interior heat exchanger 40 during the interior cooling mode. , the coolant flow of the first coolant circulation line 20 to the indoor heat exchanger 22 is restored to its original state.

Accordingly, the heating action of the auxiliary indoor heat exchanger 40 is blocked, and the cooling action of the indoor heat exchanger 22 can proceed. As a result, only the interior of the vehicle can be cooled through the indoor heat exchanger 22.

In addition, as shown in FIG. 12, the first and second coolant flow control valves 52 and 54 only supply the second coolant circulation line 30 to the auxiliary interior heat exchanger 40 during the dehumidifying mode in the vehicle interior. The coolant flow is allowed, and the coolant from the first coolant circulation line 20 is controlled to flow to the indoor heat exchanger 22 in its original state.

Accordingly, the auxiliary indoor heat exchanger 40 generates heat and heats the blown air inside the vehicle interior, and the indoor heat exchanger 22 acts as a coolant to dehumidify the blown air inside the vehicle interior.

According to the second embodiment air conditioning device having the above configuration, it further includes an auxiliary indoor heat exchanger (40), and controls the flow of engine coolant to the auxiliary indoor heat exchanger (40) according to the mode state of the air conditioning device. , When in the vehicle interior heating mode, the waste heat of the engine coolant can be utilized to the maximum extent, and through this, the heating performance of the vehicle interior can be significantly improved.

In the above, preferred embodiments of the present invention have been described by way of example, but the scope of the present invention is not limited to these specific embodiments, and may be appropriately modified within the scope stated in the claims.

5: Air conditioning case 5a: Internal flow path
5a-1: Left flow path part 5a-2: Right flow path part
10: Refrigerant circulation line (Line) 12: Compressor
14: Outdoor heat exchanger 15: Expansion valve (Valve)
16: Refrigerant-coolant chiller 20: First coolant circulation line
22: Indoor heat exchanger 22a: First heat medium flow path
22a-1: Entrance 22a-2: Exit
22b: Second heat medium flow path 22b-1: Inlet
22b-2: outlet 22c: heat medium flow control valve
24: Fluid pump (Pump) 30: Second coolant circulation line
32: Four-way flow control valve 40: Auxiliary indoor heat exchanger
50: Coolant flow control unit 52: First coolant flow control valve
54: Second coolant flow control valve E: Engine
H: PTC heater

Claims (14)

delete delete delete delete delete delete delete In a heat exchanger for an air conditioning system including an indoor heat exchanger that introduces a heat medium and exchanges heat with air blown into the vehicle interior,
The indoor heat exchanger,
A first heat medium passage in the left area of the interior heat exchanger, which is formed to correspond to the left passage part of the air conditioning case for supplying air to the driver's seat area in the vehicle interior, and can independently adjust the temperature of the blowing air on the driver's seat side in the vehicle interior. and;
A second heat medium passage in the right area of the interior heat exchanger, which is formed to correspond to the right passage part of the air conditioning case for supplying air to the passenger seat portion of the vehicle interior, and is capable of independently controlling the temperature of the blowing air on the passenger seat portion of the vehicle interior. and;
It includes a heat medium flow control valve that controls the flow of heat medium to each heat medium flow path to independently control the temperature of each area of the indoor heat exchanger,
The heat medium flow control valve is,
According to an applied control signal, the introduction of heat medium into one or both of the first and second heat medium passages is controlled,
Controlling the temperature of each area of the indoor heat exchanger independently or equally,
The heat medium passages of the indoor heat exchanger are,
Each entrance is branched differently, but the exit has a common structure,
It includes a fluid pump that circulates heat medium in heat medium passages of the indoor heat exchanger;
The fluid pump controls the amount of heat medium flowing through the indoor heat exchanger while changing its rotation speed according to an applied control signal, thereby controlling the heating temperature of the indoor heat exchanger,
a refrigerant circulation line that circulates refrigerant between the compressor, the outdoor heat exchanger, the expansion valve, and the refrigerant-coolant chiller to generate cold air in the refrigerant-coolant chiller;
In the cooling mode or dehumidifying mode in the vehicle interior, the coolant is circulated between the refrigerant-coolant chiller and the indoor heat exchanger, and the cold air from the refrigerant-coolant chiller side is transferred to the indoor heat exchanger to cool the blowing air in the vehicle interior. A first coolant circulation line that allows
a second coolant circulation line that withdraws coolant from the engine, circulates it through a preset path, and then returns it;
When the vehicle interior is in a heating mode, the second coolant circulation line and the first coolant circulation line are installed between the second coolant circulation line and the first coolant circulation line so that the second coolant circulation line can be connected to one coolant circulation circuit. It further includes a directional flow control valve;
The four-way flow control valve is,
In the vehicle interior heating mode, the second coolant circulation line coolant drawn from the engine is circulated to the interior heat exchanger through the first coolant circulation line to heat the blowing air in the vehicle interior. . delete In a heat exchanger for an air conditioning system including an indoor heat exchanger that introduces a heat medium and exchanges heat with air blown into the vehicle interior,
The indoor heat exchanger,
A first heat medium passage in the left area of the interior heat exchanger, which is formed to correspond to the left passage part of the air conditioning case for supplying air to the driver's seat area in the vehicle interior, and can independently adjust the temperature of the blowing air on the driver's seat side in the vehicle interior. and;
A second heat medium passage in the right area of the interior heat exchanger, which is formed to correspond to the right passage part of the air conditioning case for supplying air to the passenger seat portion of the vehicle interior, and is capable of independently controlling the temperature of the blowing air on the passenger seat portion of the vehicle interior. and;
It includes a heat medium flow control valve that controls the flow of heat medium to each heat medium flow path to independently control the temperature of each area of the indoor heat exchanger,
The heat medium flow control valve is,
In accordance with an applied control signal, the introduction of heat medium into one or both of the first and second heat medium passages is controlled,
Controlling the temperature of each area of the indoor heat exchanger independently or equally,
The heat medium passages of the indoor heat exchanger are,
Each entrance is branched differently, but the exit has a common structure,
It includes a fluid pump that circulates heat medium in heat medium passages of the indoor heat exchanger;
The fluid pump controls the amount of heat medium flowing through the indoor heat exchanger while changing its rotation speed according to an applied control signal, thereby controlling the heating temperature of the indoor heat exchanger,
a refrigerant circulation line that circulates refrigerant between the compressor, the outdoor heat exchanger, the expansion valve, and the refrigerant-coolant chiller to generate cold air in the refrigerant-coolant chiller;
In the cooling mode or dehumidifying mode in the vehicle interior, the coolant is circulated between the refrigerant-coolant chiller and the indoor heat exchanger, and the cold air from the refrigerant-coolant chiller side is transferred to the indoor heat exchanger to cool the blowing air in the vehicle interior. A first coolant circulation line that allows
a second coolant circulation line that withdraws coolant from the engine, circulates it through a preset path, and then returns it;
An auxiliary interior heat exchanger that introduces coolant and exchanges heat with air blown into the vehicle interior;
It further includes a coolant flow control unit that controls whether coolant flows in the second coolant circulation line to the indoor heat exchanger of the first coolant circulation line and the auxiliary indoor heat exchanger, according to the mode state in the vehicle interior,
The coolant flow control unit,
a first coolant flow control valve installed on the first and second coolant circulation lines upstream of the indoor heat exchanger and the auxiliary indoor heat exchanger;
An air conditioning device comprising a second coolant flow control valve installed in the first and second coolant circulation lines downstream of the indoor heat exchanger and the auxiliary indoor heat exchanger. According to clause 10,
The first coolant flow control valve and the second coolant flow control valve are:
In the vehicle interior heating mode, the engine coolant of the second coolant circulation line is simultaneously introduced into the auxiliary indoor heat exchanger and the indoor heat exchanger of the first coolant circulation line,
An air conditioning device characterized in that the auxiliary indoor heat exchanger and the indoor heat exchanger simultaneously generate heat and heat the blowing air in the vehicle interior. According to claim 11,
The first coolant flow control valve and the second coolant flow control valve,
In the vehicle interior cooling mode, the introduction of engine coolant from the second coolant circulation line to the auxiliary interior heat exchanger is blocked, and the flow of coolant from the first coolant circulation line to the interior heat exchanger is permitted,
Characterized in that the heating action of the auxiliary indoor heat exchanger is limited and the cooling action of the indoor heat exchanger that receives the cold air from the refrigerant circulation line is allowed, allowing the indoor heat exchanger to cool the blowing air in the vehicle interior. Air conditioning equipment. According to clause 12,
The first coolant flow control valve and the second coolant flow control valve,
In the dehumidifying mode in the vehicle interior, the auxiliary indoor heat exchanger allows coolant flow from the second coolant circulation line, and the indoor heat exchanger allows coolant flow from the first coolant circulation line,
An air conditioning device characterized in that the auxiliary indoor heat exchanger generates heat and heats the blown air inside the vehicle, and the indoor heat exchanger acts as a coolant and dehumidifies the blown air inside the vehicle. According to clause 13,
The auxiliary indoor heat exchanger is an air conditioning device characterized in that the auxiliary indoor heat exchanger is installed in parallel and overlapping each other at the rear portion of the indoor heat exchanger.

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