Vehicle air conditioning system

Abstract

A vehicle air conditioning system is provided, and the vehicle air conditioning system includes: a heating duct through which internal air and external air are introduced; and a cooling duct through which internal air and external air are introduced. A condenser is provided in the heating duct, and an evaporator is provided in the cooling duct and connected to the condenser. A phase change material stores thermal energy of the internal air passing through the heating duct and the cooling duct. An internal / external air door controls the mixing of the internal / external air introduced into the heating duct and the cooling duct, and a phase change material door controls whether the external air introduced through the heating duct and the cooling duct passes through the phase change material.

Description

Technical Field

[0001] The present disclosure relates to an air conditioning system for a vehicle, and more particularly, to an air conditioning system for a vehicle that performs cooling / heating operations by changing a flow path of air to eliminate refrigerant lines and valves required for implementing a heat pump system and reduce the cost and weight of the air conditioning system. Background Art

[0002] Recently, as environmental pollution has emerged as an important social issue, the technical development of eco-friendly vehicles including electric vehicles, hybrid vehicles and hydrogen electric vehicles has been actively carried out. On the other hand, in the development of electric vehicle technology, it is important to reduce air conditioning energy to increase the driving distance of electric vehicles. Therefore, in recent years, electric vehicles are cultivating battery performance to improve energy efficiency, and using heat pump systems to improve heating efficiency. However, due to the use of heat pump systems, additional cooling circuits and additional valves are required, and the entire system is complicated.

[0003] The foregoing content is only intended to help understanding the background of the present disclosure, but is not intended to imply that the present disclosure falls within the scope of the prior art known to those skilled in the art. Summary of the invention

[0004] Therefore, the present disclosure provides an air conditioning system for a vehicle, which performs cooling / heating operations by changing the flow path of air instead of using a heat pump system, thereby eliminating refrigerant pipes and valves required to implement a heat pump system and reducing the cost and weight of the air conditioning system.

[0005] To achieve the above-mentioned purpose, according to one aspect of the present disclosure, a vehicle air conditioning system may include: a heating duct through which internal air and external air can be introduced; a cooling duct through which internal air and external air can be introduced; a condenser disposed in the heating duct; an evaporator disposed in the cooling duct and connected to the condenser via a refrigerant line; a phase change material (PCM) that stores thermal energy of the internal air passing through the heating duct and the cooling duct; an internal / external air door that controls the mixing of the internal air and the external air introduced into the heating duct and the cooling duct; and a phase change material (PCM) door that controls whether the external air introduced through the heating duct and the cooling duct passes through the phase change material.

[0006] The heating duct may include: a first internal air duct through which internal air is introduced; and a first external air duct through which external air is introduced; and the cooling duct includes: a second internal air duct through which internal air is introduced; and a second external air duct through which external air is introduced. Phase change materials may be provided on the first internal air duct and the second internal air duct to store thermal energy of the internal air passing through the first internal air duct and the second internal air duct. The internal / external air door may include: a first internal / external air door that controls the mixing of internal air and external air introduced into the heating duct; and a second internal / external air door that controls the mixing of internal air and external air introduced into the cooling duct.

[0007] The phase change material door may include: a first phase change material door that controls whether external air introduced through the first external air duct passes through the phase change material; and a second phase change material door that controls whether external air introduced through the second external air duct passes through the phase change material. The evaporator may be disposed at a rear side of the phase change material relative to an inlet side of the heating duct or the cooling duct, and the condenser may be disposed at a rear side of the evaporator through which external air is introduced.

[0008] The vehicle air conditioning system may further include one or more of the following: a duct door configured to connect or separate the heating duct and the cooling duct to each other; a first outlet door provided at the rear side of the condenser in the heating duct to control whether the air that has passed through the condenser is discharged to the outside or supplied to the vehicle compartment. And a second outlet door provided at the rear side of the evaporator in the cooling duct to control whether the air that has passed through the evaporator is discharged to the outside or supplied to the vehicle compartment. The duct door may be provided between the condenser and the evaporator.

[0009] In the heating mode, the vehicle air conditioning system can be configured to: operate the first inside / outside air door and the second inside / outside air door to allow inside / outside air to flow into the heating duct and the cooling duct; operate the first phase change material door and the second phase change material door to block the outside air introduced through the first outside air duct and the second outside air duct from passing through the phase change material, and to allow the heat energy of the air passing through the first inside air duct and the second inside air duct to be stored in the phase change material; operate the duct door to separate the cooling duct and the heating duct from each other; and operate the second outlet door to allow the cold air that has passed through the evaporator to be discharged to the outside.

[0010] In addition, in the heating mode, the vehicle air conditioning system can be configured to: compare the dew point of the checked vehicle cabin with the vehicle glass temperature; and in response to determining that the temperature difference between the dew point and the vehicle glass temperature is within a predetermined error range, operate the first inside / outside air door to allow only outside air to be introduced into the heating duct, and operate the first phase change material door to allow outside air introduced through the first outside air duct to pass through the phase change material.

[0011] In the cooling mode, the vehicle air conditioning system may be configured to: operate the first inside / outside air door to allow only outside air to be introduced into the heating duct, operate the second inside / outside air door to allow only inside air to be introduced into the cooling duct; operate the first phase change material door and the second phase change material door to block the outside air introduced through the first outside air duct from passing through the phase change material, and to allow the heat energy of the air passing through the second inside air duct to be stored in the phase change material; operate the duct door to separate the cooling duct and the heating duct from each other; and operate the first outlet door to allow the warm air that has passed through the condenser to be discharged to the outside. In addition, in the cooling mode, the vehicle air conditioning system may be configured to: in response to determining that the required cooling load is less than or equal to the preset cooling load, operate the second inside / outside air door to allow only outside air to be introduced into the cooling duct through the second outside air duct; and operate the second phase change material door to allow the outside air introduced through the second outside air duct to pass through the phase change material.

[0012] In the dehumidification mode, the vehicle air conditioning system can be configured to: operate the first internal / external air door to allow internal / external air to be introduced into the heating duct, and operate the second internal / external air door to allow only external air to be introduced into the cooling duct; operate the first phase change material door and the second phase change material door to block the external air introduced through the first external air duct and the second external air duct from passing through the phase change material, and to allow the heat energy of the air passing through the first internal air duct to be stored in the phase change material; operate the duct door to allow the cooling duct and the heating duct to communicate with each other, so that a portion of the cold air that has passed through the evaporator is introduced into the heating duct to pass through the condenser; operate the first outlet door so that a portion of the warm air that has passed through the condenser is discharged to the outside, and the rest is supplied to the vehicle compartment; and operate the second outlet door so that a portion of the cold air that has passed through the evaporator is discharged to the outside, and the rest is supplied to the vehicle compartment.

[0013] In addition, in the heating mode, the vehicle air conditioning system can be configured to: compare the dew point of the checked vehicle cabin with the vehicle glass temperature; and in response to determining that the temperature difference between the dew point and the vehicle glass temperature is within a predetermined error range, operate the first inside / outside air door to allow only outside air to be introduced into the heating duct, and operate the first phase change material door to allow outside air introduced through the first outside air duct to pass through the phase change material.

[0014] According to the present invention, a phase change material may be provided on the first internal air duct and the second internal air duct to store the thermal energy of the internal air in the phase change material when the internal air in the first internal air duct and the second internal air duct passes through the phase change material, and when the air conditioning mode is changed so that it is only necessary to introduce external air into the heating duct and the cooling duct through the first external air duct and the second external air duct, the external air may be allowed to pass through the phase change material before passing through the condenser or the evaporator, and therefore, during passing through the phase change material, the external air may pass through the condenser or the evaporator in a state with an increased or decreased temperature as the thermal energy pre-stored in the phase change material is received, thereby preventing load concentration on the condenser or the evaporator, thereby improving the overall cooling and heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other objects, features and advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1 is a view schematically showing an overall configuration of a vehicle air conditioning system for a vehicle according to an exemplary embodiment of the present disclosure;

[0017] Figure 2 is a view showing the operation of the vehicle air conditioning system in a heating mode according to an exemplary embodiment of the present disclosure;

[0018] Figure 3 is a view showing the operation of the vehicle air conditioning system when the dew point confirmed in the heating mode is similar to the temperature of the vehicle glass according to the exemplary embodiment of the present disclosure;

[0019] Figure 4 is a view showing the operation of the vehicle air conditioning system in a cooling mode according to an exemplary embodiment of the present disclosure;

[0020] Figure 5 is a view showing the operation of the vehicle air conditioning system when the required cooling load is equal to or less than a predetermined cooling load in a cooling mode according to an exemplary embodiment of the present disclosure;

[0021] Figure 6 is a view showing the operation of the vehicle air conditioning system in a dehumidification mode according to an exemplary embodiment of the present disclosure; and

[0022] Figure 7 is a view illustrating an operation of a vehicle air conditioning system when a dew point confirmed in a dehumidification mode is similar to a temperature of a vehicle glass according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0023] It should be understood that the term "vehicle" or "vehicular" or other similar terms used herein generally include motor vehicles, such as passenger vehicles including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, watercraft including various ships and marine vessels, aircraft, etc., and include hybrid vehicles, electric vehicles, plug-in hybrid vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g., fuels from sources other than petroleum). As referred to herein, a hybrid vehicle is a vehicle having two or more power sources, such as a gasoline-powered and an electric-powered vehicle.

[0024] Although the exemplary embodiments are described as using multiple units to perform the exemplary processes, it is understood that the exemplary processes may also be performed by one or more modules. In addition, it is understood that the term controller / control unit refers to a hardware device including a memory and a processor, and is specifically programmed to perform the processes described herein. The memory is configured to store the modules, and the processor is specifically configured to execute the modules to perform one or more processes described further below.

[0025] The terms used herein are only used for the purpose of describing specific embodiments and are not intended to limit the present disclosure. As used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise. It will be further understood that when used in this specification, the terms "comprises" and / or "comprising" specify the presence of the features, wholes, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, parts and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0026] Unless otherwise specified or obvious from the context, as used herein, the term "about" is understood to be within the normal tolerance range in the art, such as within 2 standard deviations of the mean. "About" can be understood to be within 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05% or 0.01% of the specified value. Unless otherwise clearly indicated from the context, all numerical values ​​provided herein are modified by the term "about".

[0027] Hereinafter, a vehicle air conditioning system according to an exemplary embodiment of the present disclosure will be described with reference to the accompanying drawings.

[0028] refer to Figure 1, the vehicle air conditioning system according to the exemplary embodiment of the present disclosure may include a heating duct 100, a cooling duct 200, a condenser 300, an evaporator 400, a phase change material (PCM) 500, inside air / outside air doors 600 and 700 for controlling the mixing of inside air and outside air flowing into the heating duct 100 and the cooling duct 200, and phase change material doors 800 and 900 for controlling whether the outside air introduced into the heating duct 100 and the cooling duct 200 passes through the phase change material. The system may further include one or more of a passage door 910, a first outlet door 920, and a second outlet door 930. It is noteworthy that the door may be operated by a controller of the system installed in the vehicle.

[0029] The heating duct 100 may include: a first interior air duct 110 through which interior air may be introduced; and a first exterior air duct 120 through which exterior air may be introduced. Specifically, interior air in the vehicle cabin may be recirculated and flow through the first interior air duct 110, exterior air around the vehicle may be introduced through the first exterior air duct 120, and a mixture of interior air and exterior air introduced into the heating duct 100 through the first interior air duct 110 and the first exterior air duct 120 may be adjusted by the first interior / exterior air door 600.

[0030] According to an exemplary embodiment, the inside / outside air introduced through the first inside air duct 110 and the first outside air duct 120 under the control of the first inside / outside air door 600 may be mixed and supplied to the cabin through the heating duct 100. According to another exemplary embodiment, only one of the inside / outside air introduced through the first inside air duct 110 and the first outside air duct 120 under the control of the first inside / outside air door 600 may be supplied to the cabin through the heating duct 100.

[0031] The cooling duct 200 may include: a second inside air duct 210 through which inside air may be introduced; and a second outside air duct 220 through which outside air may be introduced. Specifically, inside air in the cabin may be recirculated and flow through the second inside air duct 210, outside air around the vehicle may be introduced through the second outside air duct 220, and a mixture of inside air and outside air introduced into the cooling duct 200 through the second inside air duct 210 and the second outside air duct 220 may be adjusted by the second inside / outside air door 700.

[0032] The inside / outside air introduced through the second inside air duct 210 and the second outside air duct 220 under the control of the second inside / outside air door 700 may be mixed and supplied to the cabin through the cooling duct 200. In addition, only one of the inside / outside air introduced through the second inside air duct 210 and the second outside air duct 220 under the control of the second inside / outside air door 700 may be supplied to the cabin through the cooling duct 200.

[0033] The condenser 300 may be disposed in the heating pipe 100, and the evaporator 400 may be disposed in the cooling pipe 200. Specifically, the condenser 300 and the evaporator 400 may be connected to each other by a refrigerant line. At this time, the refrigerant line may be a line through which the refrigerant circulates, and may include a compressor (not shown), a condenser 300, an expansion valve (not shown), and the evaporator 400. Specifically, the refrigerant may circulate in the order of the compressor, the condenser 300, the expansion valve, and the evaporator 400. When the refrigerant circulates according to the cooling cycle, the condenser 300 may be continuously kept in a hot state, and the evaporator 400 may be continuously kept in a cold state.

[0034] In addition, if Figure 1 As shown in FIG. 1 , a blower 940 may be disposed in the heating duct 100 and the cooling duct 200 to allow air in the corresponding ducts to be supplied into the vehicle cabin. A phase change material (PCM) 500 may be provided on the first and second interior air ducts 110 and 210 to store thermal energy passing through the first and second interior air ducts 110 and 210. According to an exemplary embodiment, under the control of the phase change material doors 800 and 900, the outside air introduced through the first and second exterior air ducts 120 and 220 may also pass through the phase change material 500, and in this case, the phase change material 500 may store thermal energy of the outside air passing through the phase change material.

[0035] The phase change material doors 800 and 900 may include a first phase change material door 800 and a second phase change material door 900. Specifically, the first phase change material door 800 may control whether external air introduced through the first external air duct 120 passes through the phase change material 500. When the first phase change material door 800 is closed, external air introduced through the first external air duct 120 may be blocked from passing through the phase change material 500, and when the first phase change material door 800 is opened, external air introduced through the first external air duct 120 may pass through the phase change material 500.

[0036] The second phase change material door 900 may control whether the external air introduced through the second external air duct 220 passes through the phase change material 500. When the second phase change material door 900 is closed, the external air introduced through the second external air duct 220 may be blocked from passing through the phase change material 500, and when the second phase change material door 900 is opened, the external air introduced through the second external air duct 220 may pass through the phase change material 500.

[0037] Meanwhile, the evaporator 400 may be disposed at the rear side of the phase change material 500, and the condenser 300 may be disposed at the rear side of the evaporator 400, relative to the inlet side of the heating duct 100 or the cooling duct 200 through which the external air is introduced. The duct door 910 may provide communication between the heating duct 100 and the cooling duct 200 or separate the heating duct 100 and the cooling duct 200 from each other. At this time, the duct door 910 may be disposed between the condenser 300 in the heating duct 100 and the evaporator 400 in the cooling duct 200. According to an exemplary embodiment, when the duct door 910 is closed, the heating duct 100 and the cooling duct 200 may be separated from each other, and according to another exemplary embodiment, when the duct door 910 is opened, the heating duct 100 and the cooling duct 200 may be communicated with each other, and therefore, the cold air having passed through the evaporator 400 may flow into the heating duct 100 through the duct door 910.

[0038] As described above, the duct door 910 may be provided between the condenser 300 in the heating duct 100 and the evaporator 400 in the cooling duct 200 to open the duct door 910 in the dehumidification mode to allow the air cooled during the passage through the evaporator 400 to flow into the heating duct 100 and then into the vehicle cabin through the duct door 910, thereby effectively promoting the dehumidification of the vehicle cabin. The first outlet door 920 may be provided at the rear side of the condenser 300 in the heating duct 100 to control whether the air having passed through the condenser 300 is discharged to the outside or supplied to the vehicle cabin.

[0039] According to an exemplary embodiment, when the first outlet door 920 is opened, the warm air may be completely discharged to the outside after passing through the condenser 300. According to another exemplary embodiment, when the first outlet door 920 is closed, the warm air may be completely supplied to the vehicle cabin after passing through the condenser 300. Furthermore, according to yet another exemplary embodiment, when the first outlet door 920 is partially closed, a portion of the warm air may be discharged to the outside after passing through the condenser 300, and the remaining portion may be supplied to the vehicle cabin.

[0040] The second outlet door 930 may be arranged at the rear side of the evaporator 400 in the cooling duct 200 to control whether the air having passed through the evaporator 400 is discharged to the outside or supplied to the vehicle compartment. According to an exemplary embodiment, when the second outlet door 930 is opened, the cold air may be completely discharged to the outside after passing through the evaporator 400. According to another exemplary embodiment, when the second outlet door 930 is closed, the cold air may be completely supplied to the vehicle compartment after passing through the evaporator 400. In addition, according to yet another exemplary embodiment, when the second outlet door 930 is partially closed, a portion of the cold air may be discharged to the outside after passing through the evaporator 400, and the remaining portion may be supplied to the vehicle compartment.

[0041] On the other hand, although not shown in detail in the accompanying drawings, the vehicle air conditioning system according to the present disclosure may include: an actuator configured to drive multiple doors (e.g., a first internal / external air door 600, a second internal / external air door 700, a first phase change material door 800, a second phase change material door 900, a duct door 910, a first outlet door 920, and a second outlet door 930); a power supply for the actuator; and a controller configured to operate the actuator according to a corresponding air conditioning mode.

[0042] In the following, reference Figures 2 to 7 , the operation of the vehicle air conditioning system according to the present disclosure will be described in detail according to the corresponding air conditioning mode. Figure 2 , in the heating mode, the vehicle air conditioning system may control the first inside / outside air door 600 and the second inside / outside air door 700 to allow the inside / outside air to be introduced into the heating duct 100 and the cooling duct 200. Further, the vehicle air conditioning system may control the first phase change material door 800 and the second phase change material door 900 to block the outside air introduced through the first outside air duct 120 and the second outside air duct 220 from passing through the phase change material 500, and to allow the heat energy of the air passing through the first inside air duct 110 and the second inside air duct 210 to be stored in the phase change material 500. In addition, the duct door 910 may be controlled to separate the cooling duct 200 and the heating duct 100, and the second outlet door 930 may be controlled to discharge the cold air obtained after having passed through the evaporator 400 to the outside.

[0043] At this time, the inside air introduced through the first inside air duct 110 and the second inside air duct 210 is warm air recirculated from the vehicle cabin in the heating mode, wherein the heat energy of the inside warm air can be stored in the phase change material 500 while passing through the phase change material 500. At the same time, Figure 2The state of maximum heating operation is shown, in which the second outlet door 930 is controlled to discharge the cold air obtained during passing through the evaporator 400 to the outside. When the maximum heating operation is not required, the second outlet door 930 may be controlled to supply a portion of the cold air that has passed through the evaporator 400 to the vehicle compartment.

[0044] On the other hand, in the vehicle air conditioning system according to the present disclosure, in the process of heating the vehicle cabin according to the heating mode, the dew point of the vehicle cabin may be checked and compared with the temperature of the vehicle glass to change the operation of the components of the vehicle air conditioning system according to the comparison result. The vehicle air conditioning system may also include a sensor configured to measure the humidity and temperature of the vehicle cabin and the temperature of the vehicle glass, and check the dew point of the vehicle cabin based on the sensed information, and compare the checked dew point of the vehicle cabin with the temperature of the vehicle glass.

[0045] Specifically, in the heating mode, the dew point of the checked cabin may be compared with the vehicle glass temperature, and in response to determining that the temperature difference between the dew point and the vehicle glass temperature is within a predetermined error range, such as Figure 4 As shown in , the first inside / outside air door 600 may be controlled so that only outside air is introduced into the heating duct 100, and the first phase change material door 800 may be controlled so that outside air introduced through the first outside air duct 120 passes through the phase change material 500. Specifically, when the dew point of the checked cabin is compared with the vehicle glass temperature and in response to determining that the temperature difference between the dew point and the vehicle glass temperature is within a predetermined error range, a state in which the humidity in the cabin is increased by recirculating the inside air in the cabin is indicated. In this state, the humidity in the cabin needs to be adjusted by introducing outside air.

[0046] At this time, if Figure 3 As shown in, under the control of the first internal / external air door, only external air should be introduced into the heating duct 100, and therefore, the first phase change material door can be controlled to allow the external air introduced through the first external air duct 120 to pass through the phase change material 500 and receive the thermal energy pre-stored in the phase change material 500, and pass through the condenser 300 in a state where the temperature of the external air is increased, thereby preventing the heating load from being concentrated on the condenser 300 and thus improving the overall heating efficiency.

[0047] In addition, reference Figure 4In the cooling mode, the vehicle air conditioning system may control the first inside / outside air door 600 to allow only outside air to be introduced into the heating duct 100, and control the second inside / outside air door 700 to allow only inside air to be introduced into the cooling duct 200. Further, the vehicle air conditioning system may control the first phase change material door 800 and the second phase change material door 900 to block outside air introduced through the first outside air duct 120 from passing through the phase change material 500, and to allow heat energy of air passing through the second inside air duct 210 to be stored in the phase change material 500.

[0048] The duct door 910 may be controlled to separate the cooling duct 200 and the heating duct 100, and the first outlet door 920 may be controlled to discharge hot air obtained after having passed through the condenser 400 to the outside. At this time, the inside air introduced through the second inside air duct 210 is cold air recirculated from the cabin in the cooling mode, wherein the heat energy of the inside cold air may be stored in the phase change material 500 while passing through the phase change material 500.

[0049] at the same time, Figure 4 A state of maximum cooling operation is shown, wherein the first outlet door 920 can be controlled to discharge warm air obtained during passing through the condenser 300 to the outside. On the other hand, in the vehicle air conditioning system according to the present disclosure, during cooling of the vehicle cabin according to the cooling mode, the required cooling load of the vehicle cabin can be checked, and the operation of the components of the vehicle air conditioning system can be changed according to the cooling load.

[0050] Specifically, in the cooling mode, when the required cooling load is less than or equal to the preset cooling load, Figure 5 As shown in , the second inside / outside air door 700 may be controlled to allow only outside air to be introduced into the cooling duct 200 through the second outside air duct 220 , and the second phase change material door 900 may be controlled to allow outside air introduced through the second outside air duct 220 to pass through the phase change material 500 .

[0051] Specifically, in response to determining that the required cooling load is equal to or less than the preset cooling load, a slight cooling condition may be detected instead of a maximum cooling condition. For example, under the maximum cooling condition, the desired temperature of the cabin may be about 18 degrees, and when the required cooling load is equal to or less than the preset cooling load, the desired temperature of the cabin may be about 24 degrees.

[0052] As described above, when the required cooling load is equal to or less than the preset cooling load, it is necessary to check the required cooling load in the cabin and change the operation of the components of the vehicle air conditioning system according to the cooling load. As described above, when the required cooling load is equal to or less than the preset cooling load, it is necessary to control the second inside / outside air door 700 to allow only outside air to be introduced into the cooling duct 200, and therefore, in a state where the temperature of the outside air is reduced, the second phase change material door 900 can be controlled to allow the outside air introduced through the second outside air duct 220 to pass through the phase change material 500 and receive the heat energy pre-stored in the phase change material 500 and pass through the evaporator 400, thereby preventing the cooling load from being concentrated on the evaporator 400, and thus improving the overall cooling efficiency.

[0053] According to the present disclosure, the phase change material 500 may be provided on the first and second interior air ducts 110 and 210 to store the heat energy of the interior air in the phase change material 500 when the interior air in the first and second interior air ducts 110 and 210 passes through the phase change material 500. When the air conditioning mode is changed so that only the outside air needs to be introduced into the heating duct 100 and the cooling duct 200 through the first and second outside air ducts 120 and 220, the outside air is allowed to pass through the phase change material 500 before passing through the condenser 300 or the evaporator 400, and thus, during passing through the phase change material 500, the outside air can pass through the condenser 300 or the evaporator 400 in a state of temperature increase or decrease utilizing the heat energy pre-stored in the phase change material 500, thereby preventing the load from being concentrated on the condenser 300 or the evaporator 400, and thus improving the overall cooling and heating efficiency.

[0054] At the same time, reference Figure 5 In the dehumidification mode, the vehicle air conditioning system may be configured to control the first inside / outside air door 600 to allow inside / outside air to be introduced into the heating duct 100, and to control the second inside / outside air door 700 to allow only outside air to be introduced into the cooling duct 200. Further, the vehicle air conditioning system may be configured to control the first phase change material door 800 and the second phase change material door 900 to block outside air introduced through the first outside air duct 120 and the second outside air duct 220 from passing through the phase change material 500, and to allow heat energy of air passing through the first inside air duct 110 to be stored in the phase change material 500.

[0055] In addition, the duct door 910 may be controlled to allow the cooling duct 200 and the heating duct 100 to communicate with each other so that a portion of the cold air having passed through the evaporator 400 may be introduced into the heating duct 100 to pass through the condenser 300. Further, the first outlet door 920 may be controlled to discharge a portion of the warm air having passed through the condenser 300 to the outside and supply the remaining portion to the vehicle cabin, and the second outlet door 930 may be controlled to discharge a portion of the cold air having passed through the evaporator 400 to the outside and supply the remaining portion to the vehicle cabin.

[0056] Meanwhile, the interior air introduced through the first interior air duct 110 may be warm air recirculated from the vehicle cabin in the heating mode. The heat energy of the interior warm air may be stored in the phase change material 500 while passing through the phase change material 500. On the other hand, in the vehicle air conditioning system according to the present disclosure, the dew point of the vehicle cabin may be checked and compared with the temperature of the vehicle glass to change the operation of the components of the vehicle air conditioning system according to the comparison result.

[0057] Specifically, in the dehumidification mode, the dew point of the checked cabin may be compared with the vehicle glass temperature, and in response to determining that the temperature difference between the dew point and the vehicle glass temperature is within a predetermined error range, the first interior / exterior air door 600 may be controlled so that only the outside air is introduced into the heating duct 100, and the first phase change material door 800 may be controlled so that the outside air introduced through the first outside air duct 120 passes through the phase change material 500. Specifically, when the dew point of the checked cabin is compared with the vehicle glass temperature and in response to determining that the temperature difference between the dew point and the vehicle glass temperature is within a predetermined error range, a state in which the humidity in the cabin is increased by recirculating the inside air in the cabin is indicated. In this state, the humidity in the cabin needs to be adjusted by introducing outside air.

[0058] At this time, if Figure 7 As shown in the figure, under the control of the first internal / external air door 600, only external air should be introduced into the heating duct 100, and therefore, the first phase change material door 800 is controlled to allow the external air introduced through the first external air duct 120 to pass through the phase change material 500 and receive the thermal energy pre-stored in the phase change material 500, and pass through the condenser 300 in a state where the temperature of the external air is increased, thereby preventing the heating load from being concentrated on the condenser 300.

[0059] Although the present disclosure has been described and illustrated with respect to specific exemplary embodiments, those skilled in the art will recognize that various improvements and modifications may be made without departing from the scope and spirit of the present disclosure as disclosed in the appended claims.

Claims

1. A vehicle air conditioning system, comprising: a heating duct through which internal air and external air are introduced; a cooling duct through which internal air and external air are introduced; A condenser, arranged in the heating pipe; an evaporator disposed in the cooling pipe and connected to the condenser via a refrigerant line; a phase change material storing thermal energy of the internal air passing through the heating pipe and the cooling pipe; an inside / outside air door to control the mixing of the inside air and the outside air introduced into the heating duct and the cooling duct; as well as a phase change material door, controlling whether the external air introduced through the heating duct and the cooling duct passes through the phase change material, wherein: The phase change material is arranged behind the phase change material door and before the condenser and the evaporator.

2. The vehicle air conditioning system according to claim 1, wherein: The heating duct includes: a first internal air duct through which the internal air is introduced; and a first external air duct through which the external air is introduced; and the cooling duct includes: a second internal air duct through which the internal air is introduced; and a second external air duct through which the external air is introduced.

3. The vehicle air conditioning system according to claim 2, wherein: The phase change material is disposed on the first and second interior air ducts to store thermal energy of the interior air passing through the first and second interior air ducts.

4. The vehicle air conditioning system according to claim 1, wherein: The inside / outside air door includes a first inside / outside air door that controls mixing of the inside air and the outside air introduced into the heating duct and a second inside / outside air door that controls mixing of the inside air and the outside air introduced into the cooling duct.

5. The vehicle air conditioning system according to claim 4, wherein: The phase change material door includes: a first phase change material door that controls whether the external air introduced through a first external air duct passes through the phase change material; and a second phase change material door that controls whether the external air introduced through a second external air duct passes through the phase change material.

6. The vehicle air conditioning system according to claim 1, wherein: The evaporator is disposed on a rear side of the phase change material with respect to an inlet side of the heating duct or the cooling duct through which the external air is introduced, and the condenser is disposed on a rear side of the evaporator.

7. The vehicle air conditioning system according to claim 5, further comprising one or more of the following: a duct door configured to provide communication between the heating duct and the cooling duct or to separate the heating duct and the cooling duct from each other; a first outlet door provided at a rear side of the condenser in the heating duct to control whether the air having passed through the condenser is discharged to the outside or supplied to the vehicle compartment; as well as A second outlet door is provided at a rear side of the evaporator in the cooling duct to control whether the air having passed through the evaporator is discharged to the outside or supplied to the vehicle compartment.

8. The vehicle air conditioning system according to claim 7, wherein: The duct door is disposed between the condenser and the evaporator.

9. The vehicle air conditioning system according to claim 7, wherein: In heating mode, the vehicle air conditioning system is configured to: controlling the first inside / outside air door and the second inside / outside air door to allow the inside air and the outside air to flow into the heating duct and the cooling duct; controlling the first phase change material door and the second phase change material door to block the outside air introduced through the first outside air duct and the second outside air duct from passing through the phase change material and to allow heat energy of the air passing through the first inside air duct and the second inside air duct to be stored in the phase change material; controlling the duct door to separate the cooling duct and the heating duct from each other; and The second outlet door is controlled to allow cool air having passed through the evaporator to be discharged to the outside.

10. The vehicle air conditioning system according to claim 9, wherein: In the heating mode, the vehicle air conditioning system is configured to: comparing the examined dew point of the cabin to the vehicle glass temperature; and In response to determining that the temperature difference between the dew point and the vehicle glass temperature is within a predetermined error range, the first inside / outside air door is controlled to allow only the outside air to be introduced into the heating duct, and the first phase change material door is controlled to allow the outside air introduced through the first outside air duct to pass through the phase change material.

11. The vehicle air conditioning system according to claim 7, wherein: In cooling mode, the vehicle air conditioning system is configured to: controlling the first inside / outside air door to allow only outside air to be introduced into the heating duct, and controlling the second inside / outside air door to allow only inside air to be introduced into the cooling duct; controlling the first phase change material door and the second phase change material door to block the outside air introduced through the first outside air duct from passing through the phase change material and to allow heat energy of air passing through the second inside air duct to be stored in the phase change material; controlling the duct door to separate the cooling duct and the heating duct from each other; and The first outlet door is controlled to allow warm air having passed through the condenser to be discharged to the outside.

12. The vehicle air conditioning system according to claim 11, wherein: In the cooling mode, the vehicle air conditioning system is configured to: In response to determining that the required cooling load is less than or equal to a preset cooling load, controlling the second inside / outside air door to allow only the outside air to be introduced into the cooling duct through the second outside air duct; and controlling the second phase change material door to allow the outside air introduced through the second outside air duct to pass through the phase change material.

13. The vehicle air conditioning system according to claim 7, wherein: In the dehumidification mode, the vehicle air conditioning system is configured to: controlling the first inside / outside air door to allow both inside and outside air to be introduced into the heating duct, and controlling the second inside / outside air door to allow only the outside air to be introduced into the cooling duct; controlling the first phase change material door and the second phase change material door to block the outside air introduced through the first outside air duct and the second outside air duct from passing through the phase change material and to allow heat energy of the air passing through the first inside air duct to be stored in the phase change material; controlling the duct door to allow the cooling duct and the heating duct to communicate with each other so as to introduce a portion of the cold air that has passed through the evaporator into the heating duct to pass through the condenser; controlling the first outlet door to discharge a portion of the warm air having passed through the condenser to the outside and to supply the remaining portion to the vehicle compartment; and The second outlet door is controlled to discharge a portion of the cool air having passed through the evaporator to the outside and to supply the remaining portion to the vehicle compartment.

14. The vehicle air conditioning system according to claim 13, wherein: In the dehumidification mode, the vehicle air conditioning system is configured to: comparing the dew point of the checked cabin to the vehicle glass temperature; and In response to determining that the temperature difference between the dew point and the vehicle glass temperature is within a predetermined error range, the first inside / outside air door is controlled to allow only the outside air to be introduced into the heating duct, and the first phase change material door is controlled to allow the outside air introduced through the first outside air duct to pass through the phase change material.

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