Vehicle air conditioning system

Abstract

The present invention provides a vehicle air-conditioning system, which includes: a pair of evaporation units, which generate heat exchange between refrigerant and air and are arranged to be spaced apart from each other to discharge cold air in different directions; an expansion valve, which expands low-temperature and high-pressure refrigerant to supply it to the evaporation unit; an inlet pipe, in which the refrigerant of the expansion valve moves to a first evaporation unit; a first moving pipe, in which the refrigerant that has circulated through an area of ​​the first evaporation unit moves to a second evaporation unit; a second moving pipe, in which the refrigerant that has circulated through the second evaporation unit moves to the first evaporation unit; and an outlet pipe, through which the refrigerant that has circulated through the first evaporation unit flows out.

Description

Technical Field

[0001] Embodiments relate to a vehicle air conditioning system. More particularly, embodiments relate to a vehicle air conditioning system that minimizes temperature deviation of air discharged from each evaporator when one expansion valve and two evaporators are connected. Background Art

[0002] like Figure 1 As shown, a general vehicle air conditioning system is configured in a refrigeration cycle formed by connecting a compressor 1 for compressing and sending out a refrigerant, a condenser 2 for condensing the high-pressure refrigerant sent out from the compressor 1, an expansion valve 3 for throttling the refrigerant condensed and liquefied by the condenser 2, and an evaporator 4 for cooling the air discharged to the interior through a heat absorption operation attributed to the latent heat of evaporation of the refrigerant caused by heat exchange and evaporation of the low-pressure liquid refrigerant throttled by the expansion valve 3, the air is blown into the interior of the vehicle through a refrigerant pipe, and the interior of the vehicle is cooled through the subsequent refrigerant cycle process.

[0003] When the cooling switch (not shown) of the air conditioning system is turned on, first, the compressor 1 is driven by the power of the engine or motor to suck and compress the low-temperature, low-pressure gaseous refrigerant, thereby sending the refrigerant to the condenser 2 in a high-temperature, high-pressure gaseous state, and the condenser 2 causes the gaseous refrigerant to exchange heat with the outside air to condense the refrigerant into a high-temperature, high-pressure liquid. Subsequently, the liquid refrigerant sent from the condenser 2 in a high-temperature, high-pressure state is rapidly expanded by the throttling operation of the expansion valve 3, and is sent to the evaporator 4 in a low-temperature, low-pressure, and wet saturated state, and the evaporator 4 causes the refrigerant to exchange heat with the air blown into the interior of the vehicle through a blower (not shown). Therefore, the refrigerant is evaporated by the evaporator 4 and discharged in a low-temperature, low-pressure gaseous state, and is sucked into the compressor 1 again to be recycled through the refrigeration cycle as described above.

[0004] In the refrigerant circulation process, as described above, the vehicle interior is cooled by discharging air blown by a blower (not shown) into the vehicle interior via the evaporator 4 in a state cooled by evaporation latent heat of liquid refrigerant circulating in the evaporator 4 .

[0005] In such a general vehicle air conditioning system, one expansion valve is used for one evaporator, and when a plurality of evaporators are used, the number of components increases.

[0006] Furthermore, there is a problem in that the structure of connecting a plurality of evaporators to the expansion valve is complicated. Summary of the invention

[0007] Technical issues

[0008] Embodiments are directed to supplying refrigerant from one expansion valve to two evaporators and minimizing temperature deviation of air discharged from each evaporator.

[0009] The objects of the present invention are not limited to the above objects, and other objects not mentioned herein will be clearly understood by those skilled in the art from the following description.

[0010] Technical Solution

[0011] One aspect of the present invention provides a vehicle air-conditioning system, which includes: a pair of evaporation units with a two-row structure, the pair of evaporation units generating heat exchange between refrigerant and air, and arranged to be spaced apart from each other to discharge cold air in different directions; and an expansion valve, the expansion valve being configured to expand low-temperature and high-pressure refrigerant to supply the refrigerant to the evaporation units, wherein the refrigerant discharged from the expansion valve passes through the second row of a first evaporation unit, circulates sequentially through the second evaporation unit, and passes through the first row of the first evaporation unit.

[0012] Preferably, the evaporation unit may include the first evaporation unit and the second evaporation unit, and the vehicle air-conditioning system may further include: an inlet pipe, in which the refrigerant of the expansion valve moves to the first evaporation unit; a first moving pipe, in which the refrigerant circulating through an area of ​​the first evaporation unit moves to the second evaporation unit; a second moving pipe, in which the refrigerant circulating through the second evaporation unit moves to the first evaporation unit; and an outlet pipe, through which the refrigerant circulating through the first evaporation unit flows out.

[0013] Preferably, the inflow and outflow in each of the first evaporation unit and the second evaporation unit may occur in different rows.

[0014] Preferably, the first row and the second row of the first evaporation unit may be separated from each other, and the first row and the second row of the second evaporation unit may be communicated with each other.

[0015] Preferably, the inlet pipe can be connected to the second row of the first evaporation unit, the first moving pipe can be connected to the second row of the first evaporation unit and the second row of the second evaporation unit, the second moving pipe can be connected to the first row of the second evaporation unit and the first row of the first evaporation unit, and the outlet pipe can be connected to the first row of the first evaporation unit.

[0016] Preferably, the pair of evaporation units may have an inclination angle.

[0017] Preferably, a blower may be arranged above the evaporation unit.

[0018] Preferably, the inlet and the outlet of the evaporation unit may be arranged on an upper side of the evaporation unit with respect to the inclination angle.

[0019] Another aspect of the present invention provides a vehicle air-conditioning system, which includes: a pair of evaporation units with a two-row structure, which produce heat exchange between refrigerant and air and are arranged to be spaced apart from each other to discharge cold air in different directions; and an expansion valve, which is configured to expand low-temperature and high-pressure refrigerant to supply the refrigerant to the evaporation unit, wherein the refrigerant discharged from the expansion valve circulates through a first evaporation unit and then circulates sequentially through a second evaporation unit.

[0020] Preferably, the evaporation unit may include the first evaporation unit and the second evaporation unit, and the vehicle air-conditioning system may further include: an inlet pipe, which is configured to supply the refrigerant of the expansion valve to the first evaporation unit; a moving pipe, in which the refrigerant moved from the first evaporation unit moves to the second evaporation unit; and an outlet pipe, through which the refrigerant of the second evaporation unit flows out.

[0021] Preferably, the inflow and outflow in each of the first evaporation unit and the second evaporation unit may occur in different rows.

[0022] Preferably, in the first evaporation unit, the inlet pipe may be connected to the second row and one side of the moving pipe may be connected to the first row, and in the second evaporation unit, the other side of the moving pipe may be connected to the second row and the outlet pipe may be connected to the first row.

[0023] Preferably, the pair of evaporation units may have an inclination angle.

[0024] Preferably, a blower may be arranged above the evaporation unit.

[0025] Preferably, the inlet and the outlet of the evaporation unit may be arranged on an upper side of the evaporation unit with respect to the inclination angle.

[0026] Preferably, the inlet and the outlet may be arranged in the same direction of the evaporation unit.

[0027] Beneficial effects

[0028] According to an embodiment, it is possible to minimize a temperature deviation of air discharged using one expansion valve in an air conditioning system having two or more evaporators.

[0029] Furthermore, the cost can be reduced by reducing the number of expansion valves and parts for connecting the evaporator.

[0030] In addition, the structure of the inlet side of the evaporator can be simplified.

[0031] Various beneficial advantages and effects of the present invention are not limited to the above description and can be more easily understood in the process of describing the specific embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a view showing the structure of a general vehicle air conditioning system.

[0033] Figure 2 is a schematic diagram of a vehicle air conditioning system according to one embodiment of the present invention.

[0034] Figure 3 is shown as Figure 2 A view of the structure of the components of an evaporator.

[0035] Figure 4 yes Figure 3 Exploded three-dimensional diagram.

[0036] Figure 5 is a structural diagram of a vehicle air conditioning system according to one embodiment of the present invention.

[0037] Figure 6 is a structural diagram of a vehicle air conditioning system according to another embodiment of the present invention. DETAILED DESCRIPTION

[0038] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0039] However, the technical spirit of the present invention is not limited to some of the described embodiments, but can be implemented in various forms, and within the scope of the technical spirit of the present invention, one or more components can be used by selectively connecting or replacing between the embodiments.

[0040] In addition, the terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as the meanings commonly understood by technicians in the field to which the present invention belongs, unless explicitly defined and clearly described, and the meanings of common terms such as terms defined in dictionaries may be interpreted in consideration of the contextual meanings of the relevant technology.

[0041] Furthermore, the terms used in the embodiments of the present invention are for describing the embodiments rather than for limiting the present invention.

[0042] In this specification, the singular form may also include the plural form unless otherwise stated in the phrase, and when describing "at least one (or one or more) of A, B and C", this may include one or more of all possible combinations of A, B and C.

[0043] Furthermore, in describing components of embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used.

[0044] These terms are used only to distinguish a component from other components, and the nature, order, or sequence of the corresponding components is not limited by these terms.

[0045] Furthermore, when a component is described as being “connected,” “coupled” or “engaged” to another component, the component is not only directly connected, coupled or engaged to the other component but also is “connected,” “coupled” or “engaged” through other components existing between the component and the other component.

[0046] Furthermore, in the case of being described as being formed or arranged “on (above) or below (below)” each component, on (above) or below (below) includes not only a case where two components are in contact with each other but also a case where one or more other components are formed or arranged between the two components. Furthermore, in the case of being described as being “on (above) or below (below)”, this may include the meaning of downward as well as upward relative to one component.

[0047] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings, and regardless of the reference numerals indicated in the drawings, the same or corresponding components are given the same reference numerals and their overlapping descriptions will be omitted.

[0048] In order to clearly understand the present invention conceptually, Figures 2 to 6 Only main feature parts are shown, and therefore, various modifications of the drawings are contemplated, and the scope of the present invention need not be limited to the specific shapes shown in the drawings.

[0049] Figure 2 is a schematic diagram of a vehicle air conditioning system according to one embodiment of the present invention.

[0050] See also Figure 2 In the vehicle air conditioning system according to one embodiment of the present invention, the blower 800 may be disposed on a central portion thereof, and the first evaporation unit 100 and the second evaporation unit 200 may be disposed on both sides of the blower 800 .

[0051] The air discharged from the blower 800 may be connected to the first evaporation unit 100 through the first connection unit 810, and connected to the second evaporation unit 200 through the second connection unit 820. The air discharged from the blower 800 is supplied into the vehicle through the evaporation units 100 and 200.

[0052] Figure 3 is shown as Figure 2 A view of the structure of the evaporation unit of the components, Figure 4 yes Figure 3 Exploded three-dimensional diagram.

[0053] Figure 3 and Figure 4 The structure shown is an example of the structure of the first evaporation unit 100 and the second evaporation unit 200. The first evaporation unit 100 and the second evaporation unit 200 represent the configuration of the evaporation unit having a two-row structure, and each structure can be modified and implemented according to the embodiment. Hereinafter, only the structure of the first evaporation unit will be described.

[0054] The first evaporation unit 100 may be arranged such that a first header tank 10 and a second header tank 20 face each other, and a plurality of pipes 50 may be connected between the first header tank 10 and the second header tank 20 .

[0055] In addition, fins 60 are arranged between the plurality of tubes 50 to improve heat exchange efficiency.

[0056] The first header 10 and the second header 20 may have a two-row structure, and the inlet pipe 30 and the outlet pipe 40 may be connected to the first header 10 .

[0057] The first header 10 and the second header 20 having the two-row structure may have a partition wall 11 allowing the refrigerant to move in the longitudinal direction.

[0058] Each row may be provided with a baffle 12 for forming a flow path. The baffles 12 may be arranged along the width direction of the first header 10 or the second header 20, and the number and position of the baffles 12 may vary according to the number of paths.

[0059] In addition, the communication unit 13 is installed on the partition wall 11 so that the refrigerant can move from the first row to the second row. The communication unit 13 may be arranged as needed and may vary according to the connection structure of the first evaporation unit 100 and the second evaporation unit 200.

[0060] Figure 3 and Figure 4 The structure of the evaporation unit shown in is used to describe the basic structure of the two-row structure, and the embodiments of the present invention are not limited thereto, and the structure of the evaporation unit may be variously modified and implemented using the basic structure.

[0061] Figure 5 is a structural diagram of a vehicle air conditioning system according to one embodiment of the present invention.

[0062] See also Figure 5 According to one embodiment of the present invention, a vehicle air-conditioning system includes: a pair of evaporation units having a two-row structure, which generate heat exchange between refrigerant and air and are arranged to be spaced apart from each other to discharge cold air in different directions; and an expansion valve 1300, which is used to expand the low-temperature and high-pressure refrigerant to supply the refrigerant to the evaporation unit, wherein the refrigerant discharged from the expansion valve 1300 can pass through the second row 1120 of the first evaporation unit 1100, and then circulate sequentially through the second evaporation unit 1200, and pass through the first row 1110 of the first evaporation unit 1100.

[0063] The present invention provides a structure in which refrigerant discharged from one expansion valve 1300 circulates through the second row 1120 of the first evaporation unit 1100, then circulates through the entire second evaporation unit 1200, and circulates through the first row 1110 of the first evaporation unit 1100 again.

[0064] At this time, the first evaporation unit 1100 and the second evaporation unit 1200 may be arranged such that the refrigerant flowing into the first evaporation unit 1100 and the second evaporation unit 1200 flows into the second rows 1120 and 1220 and flows out of the first rows 1110 and 1210 .

[0065] When the refrigerant discharged from one expansion valve 1300 moves from the evaporation unit, heat loss occurs. Considering the temperature of the refrigerant and the position where the refrigerant circulates through the evaporation units 1100 and 1200, the present invention aims to minimize the temperature deviation of the discharged air.

[0066] The embodiment of the present invention may include an evaporation unit, an expansion valve 1300 , an inlet pipe 1400 , a first moving pipe 1500 , a second moving pipe 1600 , and an outlet pipe 1700 .

[0067] A pair of evaporation units 1100, 1200 are provided, which are arranged to be spaced apart from each other so that the refrigerant and the air can exchange heat. The pair of evaporation units are arranged to discharge cold air in different directions. The arrangement position of the evaporation unit can be variously modified and implemented according to the direction of cold air discharge or the structure of the pipeline.

[0068] As one embodiment, the evaporation unit may include a pair of headers, a plurality of pipes connecting the headers so that the refrigerant moves, and fins disposed between the pipes. The structure of the evaporation unit is not limited and may be variously modified and implemented.

[0069] According to the present invention, the evaporation unit includes a first evaporation unit 1100 and a second evaporation unit 1200 arranged to be spaced apart from each other, each of which may be arranged in a two-row structure.

[0070] The first evaporation unit 1100 may include a first row 1110 arranged on the top and a second row 1120 arranged below the first row 1110 and 1210. However, the first evaporation unit 1100 arranged in two rows may have a structure in which the first row 1110 and the second row 1120 are separated from each other. This means that the refrigerant does not move between the headers arranged in each row.

[0071] The second evaporation unit 1200 may include a first row 1210 arranged on the top and a second row 1220 arranged below the first row 1210. However, the second evaporation unit 1200 arranged in two rows may have a structure in which the first row 1210 and the second row 1220 are communicated with each other so that the refrigerant moves. This means that the refrigerant moves between the headers arranged in each row.

[0072] In other words, the refrigerant flowing into the second row 1120 of the first evaporation unit 1100 does not move to the first row 1110 but moves to the second evaporation unit 1200. Thereafter, the refrigerant flowing into the second row 1220 of the second evaporation unit 1200 is connected to the first row 1210 through the header, circulates through the first row 1210, and then moves to the first row 1110 of the first evaporation unit 1100. Therefore, the circulation efficiency of the refrigerant can be improved.

[0073] The first evaporation unit 1100 and the second evaporation unit 1200 may be arranged to have an inclination angle. This is to facilitate the circulation of the cold air discharged through the first evaporation unit 1100 and the second evaporation unit 1200. The inclination angles of the first evaporation unit 1100 and the second evaporation unit 1200 are not limited, and may be variously modified and implemented according to the position of the duct in which the cold air circulates.

[0074] The blower 1800 is arranged above the evaporation units 1100 and 1200 to move the cold air after heat exchange to the evaporation units. The shape of the blower 1800 is not limited, and the blower 1800 can be arranged above the pair of evaporation units, or one blower 1800 can have a structure with two discharge ports, and each discharge port can be arranged to face each evaporation unit.

[0075] The expansion valve 1300 may expand the low-temperature and high-pressure refrigerant to supply the refrigerant to the first evaporation unit 1100 .

[0076] like Figure 1As shown, a general vehicle air conditioning system is configured as a system including a compressor for compressing and sending out a refrigerant, and a condenser, an expansion valve, and an evaporator through which the refrigerant circulates.

[0077] At this time, the expansion valve 1300 can rapidly expand the liquid refrigerant in a high temperature and high pressure state sent from the condenser to supply the low temperature, low pressure and wet saturated refrigerant to the evaporation unit through the throttling operation of the expansion valve 1300. According to the present invention, the structure of the expansion valve 1300 is not limited, and the expansion valve 1300 can be modified and implemented in various structures.

[0078] The inlet pipe 1400 , the first moving pipe 1500 , the second moving pipe 1600 , and the outlet pipe 1700 constitute a moving line of the refrigerant.

[0079] The inlet pipe 1400 provides a passage in which the refrigerant discharged from the expansion valve 1300 moves to the first evaporation unit 1100 .

[0080] The first moving pipe 1500 provides a passage in which the refrigerant circulating through one area of ​​the first evaporation unit 1100 moves to the second evaporation unit 1200 .

[0081] The second moving pipe 1600 provides a passage in which the refrigerant circulating through the second evaporation unit 1200 moves to the first evaporation unit 1100 .

[0082] The outlet pipe 1700 provides a passage through which the refrigerant circulating through another area of ​​the first evaporation unit 1100 flows out.

[0083] As one embodiment, in the first evaporation unit 1100, the inlet pipe 1400 may be connected to the second row 1120, the first movable pipe 1500 may be connected to the second row 1120 of the first evaporation unit 1100 and the second row 1220 of the second evaporation unit 1200, the second movable pipe 1600 may be connected to the first row 1210 of the second evaporation unit 1200 and the first row 1110 of the first evaporation unit 1100, and the outlet pipe 1700 may be connected to the first row 1110 of the first evaporation unit 1100 to provide a channel through which the refrigerant circulates.

[0084] According to the present invention, the inlet pipe 1400, the first moving pipe 1500, the second moving pipe 1600 and the outlet pipe 1700 are arranged in a tubular structure to provide a passage through which the refrigerant can move, and their shapes or arrangement structures can be variously modified and implemented. However, it is preferred that the above components are arranged at the shortest distance to prevent heat loss of the refrigerant.

[0085] According to the present invention, the inflow and outflow in the first evaporation unit 1100 and the second evaporation unit 1200 having the two-row structure may occur in different rows.

[0086] As one embodiment, in the first evaporation unit 1100, the inlet pipe 1400 is connected to the second row 1120, and one side of the first moving pipe 1500 is connected to the second row 1120. In the second evaporation unit 1200, the other side of the first moving pipe 1500 is connected to the second row 1220, one side of the second moving pipe 1600 is connected to the first row 1210 of the second evaporation unit 1200, and the other side of the second moving pipe 1600 is connected to the first row 1110 of the first evaporation unit 1100. Thereafter, the outlet pipe 1700 may be connected to the first row 1210 of the first evaporation unit 1100.

[0087] The second row 1120 of the first evaporation unit 1100 and the second row 1220 of the second evaporation unit 1200 refer to rows arranged at a lower side of each evaporation unit, and refrigerant having a lower temperature among the refrigerants flowing into each evaporation unit flows into the second row.

[0088] This is to improve cooling efficiency by allowing heat loss caused when the refrigerant moves to the evaporation unit and the refrigerant having a low temperature is heat-exchanged at a position close to the passenger.

[0089] Furthermore, the inlet and the outlet of the evaporation unit may be arranged on an upper side of the evaporation unit with respect to the inclination angle.

[0090] As one embodiment, a moving line of the refrigerant connected to the first evaporation unit 1100 and the second evaporation unit 1200 may be connected to an upper side of each evaporation unit with respect to an inclination angle.

[0091] Furthermore, the inlet and the outlet to which the refrigerant moving line is connected may vary according to the number of baffles arranged in the header of the evaporator to form a flow path of the evaporator.

[0092] As one embodiment, a pair of inlets and outlets provided in the first evaporation unit 1100 may be formed to face each other in each of the first row 1110 and the second row 1120, and an inlet and an outlet provided in the second evaporation unit 1200 through which the refrigerant circulates may be arranged on one side of each of the first row 1210 and the second row 1220.

[0093] Figure 6 is a structural diagram of a vehicle air conditioning system according to another embodiment of the present invention.

[0094] See also Figure 6, a vehicle air-conditioning system according to another embodiment of the present invention may include: a pair of evaporation units having a two-row structure, which generate heat exchange between the refrigerant and the air, and are arranged to be spaced apart from each other to discharge cold air in different directions; and an expansion valve 2300, which is used to expand the low-temperature and high-pressure refrigerant to supply the refrigerant to the evaporation unit, wherein the refrigerant discharged from the expansion valve 2300 can circulate through the first evaporation unit 2100 and then circulate through the second evaporation unit 2200 sequentially.

[0095] According to the present invention, the refrigerant discharged from one expansion valve 2300 sequentially circulates through the first evaporation unit 2100 and the second evaporation unit 2200 so that the refrigerant passes through the plurality of evaporation units.

[0096] At this time, the first evaporation unit 2100 and the second evaporation unit 2200 may be provided in a two-row structure and arranged so that the refrigerant flows into the second row 2120 and 2220 which is the side close to the cold air discharge direction, and the refrigerant flows out of the first row 2110 and 2210 so as to improve the efficiency of the evaporator due to the discharged refrigerant. Therefore, the efficiency of the evaporation unit in which the refrigerant moves can be improved.

[0097] The embodiment of the present invention may include evaporation units 2100 and 2200 , an expansion valve 2300 , an inlet pipe 2400 , a moving pipe 2500 , and an outlet pipe 2600 .

[0098] A pair of evaporation units 2100 and 2200 are provided, which are arranged to be spaced apart from each other so that the refrigerant and the air can exchange heat. The pair of evaporation units are arranged to discharge cold air in different directions. The arrangement position of the evaporation unit can be variously modified and implemented according to the direction of cold air discharge or the structure of the pipeline.

[0099] As one embodiment, the evaporation unit may include a pair of headers, a plurality of pipes connecting the headers so that the refrigerant moves, and fins disposed between the pipes. The structure of the evaporation unit is not limited and may be variously modified and implemented.

[0100] According to the present invention, the evaporation unit includes a first evaporation unit 2100 and a second evaporation unit 2200 arranged to be spaced apart from each other, each of which may be arranged in a two-row structure. The first evaporation unit 2100 and the second evaporation unit 2200 may have the same structure.

[0101] The first evaporation unit 2100 may have a two-row structure communicated through a header.

[0102] Each of the first and second evaporation units 2100 and 2200 may include first rows 2110 and 2210 disposed on the top and second rows 2120 and 2220 disposed below the first rows 2110 and 2210 , and the first rows 2110 and 2210 and the second rows 2120 and 2220 may be connected by a header.

[0103] In other words, the refrigerant flowing into the second row 2120 of the first evaporation unit 2100 circulates through the second row 2120, then moves to the first row 2110 through the header, circulates through the first row 2110, and then moves to the second evaporation unit 2200. Therefore, the circulation efficiency of the refrigerant can be improved.

[0104] The first evaporation unit 2100 and the second evaporation unit 2200 may be arranged to have an inclination angle. This is to facilitate the circulation of the cold air discharged through the first evaporation unit 2100 and the second evaporation unit 2200. The inclination angles of the first evaporation unit 2100 and the second evaporation unit 2200 are not limited, and various modifications and implementations may be performed according to the position of the duct in which the cold air circulates.

[0105] The blower 2700 may be arranged above the evaporation units 2100 and 2200 to move the cold air after heat exchange to the evaporation units. The shape of the blower 2700 is not limited, and the blowers 2700 may be arranged above the pair of evaporation units 2100 and 2200, respectively, or one blower 2700 may have a structure with two discharge ports, and each discharge port may be arranged to face each of the evaporation units 2100 and 2200.

[0106] The expansion valve 2300 may expand the low-temperature and high-pressure refrigerant to supply the refrigerant to the evaporation units 2100 and 2200 .

[0107] like Figure 1 As shown, a general vehicle air conditioning system is configured as a system including a compressor for compressing and sending out a refrigerant, and a condenser, an expansion valve, and an evaporator through which the refrigerant circulates.

[0108] At this time, the expansion valve 2300 can rapidly expand the liquid refrigerant in a high temperature and high pressure state sent from the condenser to supply the low temperature, low pressure and wet saturated refrigerant to the evaporation unit through the throttling operation of the expansion valve 2300. According to the present invention, the structure of the expansion valve 2300 is not limited, and the expansion valve 2300 can be modified and implemented in various structures.

[0109] The inlet pipe 2400 provides a passage in which the refrigerant discharged from the expansion valve 2300 moves to the first evaporation unit 2100 .

[0110] The moving pipe 2500 provides a passage in which the refrigerant circulating through the first evaporation unit 2100 moves to the second evaporation unit 2200 .

[0111] The outlet pipe 2600 provides a passage in which the refrigerant circulating through the second evaporation unit 2200 moves.

[0112] According to the present invention, the inlet pipe 2400, the moving pipe 2500 and the outlet pipe 2600 are arranged in a tubular structure to provide a passage through which the refrigerant can move, and their shapes or arrangement structures can be variously modified and implemented. However, it is preferred that the above components are arranged at the shortest distance to prevent heat loss of the refrigerant.

[0113] According to the present invention, inflow and outflow in the first evaporation unit 2100 and the second evaporation unit 2200 having a two-row structure may occur in different rows.

[0114] As one embodiment, in the first evaporation unit 2100, the inlet pipe 2400 may be connected to the second row 2120 and one side of the moving pipe 2500 may be connected to the first row 2110, and in the second evaporation unit 2200, the other side of the moving pipe 2500 may be connected to the second row 2220 and the outlet pipe 2600 may be connected to the first row 2210.

[0115] The second row 2120 of the first evaporation unit 2100 and the second row 2220 of the second evaporation unit 2200 refer to rows arranged at a lower side of each evaporation unit, and refrigerant having a lower temperature among the refrigerants flowing into each evaporation unit flows into the second row.

[0116] This is to improve cooling efficiency by allowing heat loss caused when the refrigerant moves to the evaporation unit and the refrigerant having a low temperature is heat-exchanged at a position close to the passenger.

[0117] Furthermore, the inlet and the outlet of the evaporation unit may be arranged on an upper side of the evaporation unit with respect to the inclination angle.

[0118] As one embodiment, the inlet pipe 2400 connected to the first evaporation unit 2100 and through which the refrigerant flows may be arranged on the upper side of the second row 2120, and the one side of the mobile pipe 2500 connected to the first row 2110 and through which the refrigerant is discharged may be arranged on the upper side of the first row 2110. In addition, the other side of the mobile pipe 2500 connected to the second evaporation unit 2200 and through which the refrigerant flows may be arranged on the upper side of the second row 2220, and the outlet pipe 2600 connected to the first row 2210 and through which the refrigerant is discharged may be arranged on the upper side of the first row 2210.

[0119] Furthermore, the inlet and the outlet may vary depending on the number of baffles arranged in the header of the evaporator to form a flow path of the evaporator.

[0120] As an embodiment, the inlet and the outlet are arranged in the same direction in the first evaporation unit 2100 and the second evaporation unit 2200 to minimize the space required for the connecting pipe. However, the inlet and the outlet are not limited to Figure 2 Those shown in , and various modifications and implementations may be made.

[0121] As described above, the embodiments of the present invention have been described in detail with reference to the accompanying drawings.

[0122] The above description is merely an illustration of the technical spirit of the present invention, and a person skilled in the art to which the present invention belongs may make various modifications, changes and substitutions to the present invention without departing from the basic features of the present invention. Therefore, the embodiments and drawings disclosed in the present invention are intended to describe the technical spirit of the present invention rather than to limit it, and the scope of the technical spirit of the present invention is not limited by these embodiments and drawings. The scope of the present invention shall be interpreted by the attached claims, and all technical spirits within their equivalent range shall be interpreted as included within the scope of the present invention.

Claims

1. A vehicle air conditioning system, the vehicle air conditioning system comprising: a pair of evaporation units having a two-row structure, the pair of evaporation units generating heat exchange between refrigerant and air, and arranged to be spaced apart from each other to discharge cool air in different directions; an expansion valve configured to expand low-temperature and high-pressure refrigerant to supply the refrigerant to the evaporation unit; as well as a blower configured to be arranged above the evaporation unit, Each of the evaporation units includes a first evaporation unit and a second evaporation unit. wherein each of the first evaporation unit and the second evaporation unit includes a first row arranged at the top and a second row arranged below the first row based on the blower, wherein the first row and the second row of the first evaporation unit are separated from each other, and the first row and the second row of the second evaporation unit are connected to each other, The refrigerant discharged from the expansion valve passes through the second row of the first evaporation unit, flows into the second row of the second evaporation unit, circulates through the second row and the first row of the second evaporation unit sequentially, and passes through the first row of the first evaporation unit.

2. The vehicle air conditioning system according to claim 1, in, The evaporation unit further includes: an inlet pipe in which the refrigerant of the expansion valve moves to the first evaporation unit; a first moving pipe in which the refrigerant circulating through one area of ​​the first evaporation unit moves to the second evaporation unit; a second moving pipe in which the refrigerant circulating through the second evaporation unit moves to the first evaporation unit; and An outlet pipe through which the refrigerant circulating through the first evaporation unit flows out.

3. The vehicle air conditioning system according to claim 2, in, Inflow and outflow in each of the first evaporation unit and the second evaporation unit occur in different rows.

4. The vehicle air conditioning system according to claim 2, in, The inlet pipe is connected to the second row of the first evaporation unit, The first moving pipe is connected to the second row of the first evaporation unit and the second row of the second evaporation unit, The second moving pipe is connected to the first row of the second evaporation unit and the first row of the first evaporation unit, and The outlet pipe is connected to the first row of the first evaporation unit.

5. The vehicle air conditioning system according to claim 2, in, The pair of evaporation units has an inclination angle.

6. The vehicle air conditioning system according to claim 5, in, An inlet and an outlet of the evaporation unit are arranged at an upper side of the evaporation unit with respect to the inclination angle.

7. A vehicle air conditioning system, comprising: a pair of evaporation units having a two-row structure, the pair of evaporation units generating heat exchange between refrigerant and air, and arranged to be spaced apart from each other to discharge cool air in different directions; an expansion valve configured to expand low-temperature and high-pressure refrigerant to supply the refrigerant to the evaporation unit; as well as a blower configured to be arranged above the evaporation unit, Each of the evaporation units includes a first evaporation unit and a second evaporation unit. wherein each of the first evaporation unit and the second evaporation unit includes a first row arranged at the top and a second row arranged below the first row based on the blower, wherein the refrigerant discharged from the expansion valve flows into the second row of the first evaporation unit, circulates sequentially through the second row and the first row of the first evaporation unit, flows into the second row of the second evaporation unit, and circulates sequentially through the second row and the first row of the second evaporation unit.

8. The vehicle air conditioning system according to claim 7, in, The evaporation unit further includes: an inlet pipe configured to supply the refrigerant of the expansion valve to the first evaporation unit; a moving pipe in which the refrigerant moved from the first evaporation unit moves to the second evaporation unit; and An outlet pipe through which the refrigerant of the second evaporation unit flows out.

9. The vehicle air conditioning system according to claim 8, in, Inflow and outflow in each of the first evaporation unit and the second evaporation unit occur in different rows.

10. The vehicle air conditioning system according to claim 9, in, In the first evaporation unit, the inlet pipe is connected to the second row and one side of the moving pipe is connected to the first row, and In the second evaporation unit, the other side of the moving tube is connected to the second row and the outlet tube is connected to the first row.

11. The vehicle air conditioning system according to claim 9, in, The pair of evaporation units has an inclination angle.

12. The vehicle air conditioning system according to claim 11, in, An inlet and an outlet of the evaporation unit are arranged at an upper side of the evaporation unit with respect to the inclination angle.

13. The vehicle air conditioning system according to claim 12, in, The inlet and the outlet are arranged in the same direction of the evaporation unit.

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