Cooling and heating supply apparatus for aircraft

Abstract

A cooling and heating apparatus for aircraft, according to the present invention, uses at least some of condensate generated in an evaporator and water supplied from outside as cooling water for pre-cooling air in a condenser, thereby lowering the condensation temperature of refrigerant in the condenser and improving the coefficient of performance of the cooling and heating apparatus. Also, the condensate discharged after pre-cooling the air from the condenser is circulated and reused, and thus, the flow rate of the cooling water can be easily secured while improving the effect of utilizing the cooling water. Also, a plurality of condensers respectively included in a plurality of refrigerant cycles are continuously arranged along the flow direction of air, and a condenser precooler is provided to spray the cooling water toward a condenser, from among the plurality of condensers, arranged at the upstream side with respect to the flow direction of the air. Thus, there is an advantage of securing cooling efficiency of the condenser while simplifying the configuration. Also, it is controlled so that the flow rate of the cooling water sprayed toward the condenser, from among the continuously arranged condensers, closer to the upstream side with respect to the flow direction of the air is greater than the flow rate of the cooling water sprayed to the other condensers, and thus, the utilization efficiency of the cooling water may be maximized.

Description

Aircraft heating and cooling supply system

[0001] The present invention relates to a preconditioned air unit for an aircraft, and more particularly, to a preconditioned air unit for an aircraft that can improve the coefficient of performance (COP) by spraying cooling water on the surface of a condenser to lower the temperature of air supplied to the condenser and also lower the condensation temperature of a refrigerant.

[0002] Typically, when an aircraft is on standby at an airport, it overheats due to radiant heat from the ground and solar heat.

[0003] Using an aircraft's air conditioning system for cooling requires the aircraft's engines (auxiliary power units, APUs) to operate, which consumes expensive fuel, resulting in high costs and noise. Furthermore, the combustion process generates fine dust and NOx, which directly impact daily life, and emits CO2, a global warming agent.

[0004] Recently, aircraft air conditioning and heating systems have been developed that are installed separately from the aircraft, draw in outside air, cool it using a heat exchanger and cooler, and then supply the cooled air to the aircraft through ducts. However, in high outside temperatures, such as in summer, the cooling load on the cooler increases, resulting in low energy efficiency.

[0005] The purpose of the present invention is to provide an aircraft heating and cooling supply device capable of further improving the coefficient of performance.

[0006] The present invention relates to an aircraft heating and cooling supply device, which is installed in an airport apron and supplies cooling or heating air to the cabin of an aircraft through a high-pressure hose, and which comprises a compressor, a condenser, an expansion valve, and an evaporator, wherein at least one refrigerant cycle including compression, condensation, expansion, and evaporation of a refrigerant is performed, and a condenser precooler which sprays at least a portion of the condensate generated in the evaporator and the feedwater supplied from the outside into the intake port side of the condenser to use the condenser as cooling water for cooling the air flowing into the condenser.

[0007] The above condenser precooler may further include an evaporator condensate supply channel for guiding condensate generated in the evaporator to the condenser, and a cooling water injector connected to the evaporator condensate supply channel for injecting condensate supplied from the evaporator condensate supply channel toward the condenser.

[0008] The above condenser precooler may further include an external cooling water supply path for guiding externally supplied water to the condenser, and a cooling water injector connected to the external cooling water supply path for injecting cooling water supplied from the external cooling water supply path toward the condenser.

[0009] The above condenser precooler may further include an evaporator condensate supply path for guiding condensate generated in the evaporator to the condenser, an external cooling water supply path for guiding externally supplied water to the condenser, and a cooling water injector for injecting cooling water supplied from at least one of the evaporator condensate supply path and the external cooling water supply path toward the condenser.

[0010] The above-mentioned aircraft heating and cooling supply device further includes a condenser blower fan for blowing air to the condenser, and a bell mouth provided on an intake side of the condenser to guide air sucked into the condenser blower fan, and the condenser precooler may further include a cooling water supply path for guiding at least a portion of condensate generated in the evaporator and externally supplied water to the intake side of the condenser, and a cooling water injector connected to the cooling water supply path and provided on the bell mouth to inject cooling water toward the condenser.

[0011] The above-mentioned aircraft heating and cooling supply device further includes a condenser blower fan for blowing air to the condenser, a blower fan motor for driving the condenser blower fan, and a motor stand formed to support the blower fan motor, and the condenser precooler may further include a cooling water supply path for guiding at least a portion of the condensate generated in the evaporator and the externally supplied feedwater to the intake port side of the condenser, and a cooling water injector connected to the cooling water supply path and provided on the motor stand for injecting cooling water toward the condenser.

[0012] The above refrigerant cycles are configured in parallel in multiple numbers, and the above condensers are provided in multiple numbers to be included in each of the multiple refrigerant cycles, and at least some of the multiple condensers can be arranged in series so that air passes through them sequentially while being spaced apart from each other by a predetermined distance along the direction of air flow.

[0013] The above condenser precooler may include a plurality of cooling water supply passages formed to guide at least a portion of the condensate generated in the evaporator and the externally supplied feed water to the condenser arranged upstream with respect to the air flow direction among the continuously arranged condensers, and a cooling water injector connected to the cooling water supply passages and arranged to inject cooling water.

[0014] The above condenser precooler may include a plurality of cooling water supply passages formed to guide at least a portion of the condensate generated in the evaporator and the externally supplied feed water to the plurality of condensers, a plurality of cooling water injectors respectively connected to the cooling water supply passages and spraying cooling water, and a plurality of cooling water flow rate control valves installed in each of the cooling water supply passages and controlling the flow rate of the cooling water sprayed through the plurality of cooling water injectors.

[0015] The above-described aircraft heating and cooling supply device may further include a control unit that controls the cooling water flow control valves so that the flow rate of cooling water injected into a condenser closer to the upstream side with respect to the air flow direction among the continuously arranged condensers is greater than the flow rate of cooling water injected into the remaining condensers.

[0016] The above refrigerant cycles are configured in parallel in multiple numbers, and the above condensers are provided in multiple numbers to be included in each of the multiple refrigerant cycles, and the multiple condensers can be arranged in parallel with respect to the direction of air flow so that air passes through them individually.

[0017] The above condenser precooler may further include a plurality of cooling water supply passages formed to guide at least a portion of the condensate generated in the evaporator and the externally supplied feed water to the plurality of condensers, a plurality of cooling water injectors respectively connected to the plurality of cooling water supply passages to inject cooling water toward the plurality of condensers, and a plurality of cooling water flow rate control valves installed in each of the cooling water supply passages to control the flow rate of the cooling water respectively injected through the plurality of cooling water injectors.

[0018] The above-described aircraft heating and cooling supply device may further include a condenser temperature sensor for measuring the temperature of the refrigerant coming from the condenser, a condenser pressure sensor for measuring the pressure of the refrigerant coming from the condenser, and a control unit for controlling the operation of the plurality of cooling water flow control valves according to an outside temperature and a value detected by at least one of the condenser temperature sensor and the condenser pressure sensor.

[0019] The above-mentioned aircraft heating and cooling supply device may further include an evaporator condensate tank installed at the lower portion of the evaporator to collect condensate generated in the evaporator, an evaporator condensate supply path for guiding condensate stored in the evaporator condensate tank to the condenser, and a condensate tube connected to the evaporator condensate supply path and provided on at least one side of the inside and the outside of the condenser to exchange heat between condensate supplied from the evaporator condensate supply path and air, thereby cooling air flowing into the condenser.

[0020] The above-mentioned aircraft heating and cooling supply device may further include a condensate circulation path for circulating condensate passing through the condensate tube to at least one of the evaporator condensate tank and the evaporator condensate supply path.

[0021] The above-mentioned aircraft heating and cooling supply device may further include a condensate drain channel branched from the condensate circulation channel and discharging at least a portion of the condensate before flowing into the evaporator condensate tank to the outside, a condensate temperature sensor installed in the condensate circulation channel and measuring the temperature of the condensate before flowing into the evaporator condensate tank, a condensate circulation valve installed in the condensate circulation channel, and a control unit that opens the condensate circulation valve and closes the condensate drain valve when the temperature of the condensate measured by the condensate drain valve and the condensate temperature sensor is lower than or equal to a first preset temperature, thereby controlling the condensate from the condenser to circulate to the evaporator condensate tank.

[0022] According to another aspect of the present invention, an aircraft heating and cooling supply device is provided in an airport apron, and supplies cooling or heating air to the cabin of an aircraft through a high-pressure hose, the aircraft heating and cooling supply device comprising a compressor, a condenser, an expansion valve, and an evaporator, wherein at least one refrigerant cycle including compression, condensation, expansion, and evaporation of a refrigerant is performed, and a condenser precooler is provided to use cooling water for cooling air flowing into the condenser by injecting at least a portion of the condensate generated in the evaporator and the externally supplied feedwater into the intake port side of the condenser, wherein the condenser precooler comprises: an evaporator condensate tank installed at a lower portion of the evaporator to collect the condensate generated in the evaporator; an evaporator condensate supply channel for guiding the condensate generated in the evaporator to the condenser; an external cooling water supply channel for guiding the externally supplied feedwater to the condenser; a cooling water injector for injecting cooling water supplied from at least one of the evaporator condensate supply channel and the external cooling water supply channel toward the condenser; It includes a condensate tube connected to an evaporator condensate supply path and provided on at least one side of the inside and the outside of the condenser, and heat-exchanging condensate supplied from the evaporator condensate supply path with air to cool the air flowing into the condenser.

[0023] The above refrigerant cycle can be performed by a heat pump including the compressor, the expansion valve, the evaporator, and the heating / cooling switching valve.

[0024] An air conditioning and heating device for an aircraft according to the present invention can improve the performance coefficient of the air conditioning and heating device by lowering the condensation temperature of the refrigerant in the condenser by utilizing at least a portion of the condensate generated in the evaporator and the externally supplied feed water as cooling water for precooling air in the condenser.

[0025] In addition, by pre-cooling the air in the condenser and circulating and reusing the resulting condensate, it is easy to secure the flow rate of the cooling water and improve the cooling water utilization effect.

[0026] In addition, since a plurality of condensers included in each of a plurality of refrigerant cycles are arranged in series along the direction of air flow, and a condenser precooler is provided to spray cooling water toward a condenser arranged upstream with respect to the direction of air flow among the plurality of condensers, there is an advantage in that the configuration can be simplified while securing the cooling efficiency of the condenser.

[0027] In addition, there is an advantage in that the efficiency of cooling water utilization can be maximized by controlling the flow rate of cooling water injected into a condenser closer to the upstream side with respect to the air flow direction among the continuously arranged condensers so that it is greater than the flow rate of cooling water injected into the remaining condensers.

[0028] In addition, the air conditioning and heating device for an aircraft according to the present invention can implement a compact yet energy-efficient device by efficiently arranging a plurality of compressors, a plurality of condensers, a turbo intake fan, and an evaporator, etc., inside a case.

[0029] FIG. 1 is a perspective view showing an aircraft heating and cooling supply device according to a first embodiment of the present invention, with the upper surface of the case open.

[0030] Fig. 2 is a perspective view showing the lower part of the case in the aircraft heating and cooling supply device illustrated in Fig. 1.

[0031] Figure 3 is a drawing showing the front of the aircraft heating and cooling supply device illustrated in Figure 1.

[0032] Figure 4 is a drawing showing the right side of the aircraft heating and cooling supply device illustrated in Figure 1.

[0033] Figure 5 is a plan view showing the interior of the aircraft heating and cooling supply device illustrated in Figure 1.

[0034] FIG. 6 is a drawing schematically showing the flow of refrigerant and condensate in an aircraft heating and cooling supply device according to the first embodiment of the present invention.

[0035] FIG. 7 is an enlarged view of a condenser and a condensate precooler according to a first embodiment of the present invention.

[0036] FIG. 8 is a schematic diagram showing the configuration of condensers and condenser precoolers in an aircraft heating and cooling supply device according to a second embodiment of the present invention.

[0037] FIG. 9 is a schematic diagram showing the configuration of condensers and condenser precoolers in an aircraft heating and cooling supply device according to a third embodiment of the present invention.

[0038] FIG. 10 is a schematic diagram showing the configuration of condensers and condenser precoolers in an aircraft heating and cooling supply device according to a fourth embodiment of the present invention.

[0039] FIG. 11 is a schematic diagram of a condenser precooler and a condenser tube in an aircraft heating and cooling supply device according to a fifth embodiment of the present invention.

[0040] Fig. 12 shows an example of installation of a cooling water injector in an aircraft heating and cooling supply device according to the sixth embodiment of the present invention.

[0041] Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.

[0042] FIG. 1 is a perspective view showing an upper surface of a case in an aircraft preconditioned air unit according to a first embodiment of the present invention with the case open. FIG. 2 is a perspective view showing a lower portion of a case in the aircraft preconditioned air unit shown in FIG. 1. FIG. 3 is a drawing showing a front side of the aircraft preconditioned air unit shown in FIG. 1. FIG. 4 is a drawing showing a right side of the aircraft preconditioned air unit shown in FIG. 1. FIG. 5 is a plan view showing the interior of the aircraft preconditioned air unit shown in FIG. 1.

[0043] An aircraft heating and cooling supply device according to a first embodiment of the present invention is a device installed in an airport apron to supply cooling or heating air generated internally to the cabin of an aircraft.

[0044] Referring to FIGS. 1 to 5, the air conditioning and heating supply device for an aircraft includes a case (10), a compressor (20), a condenser (30), an expansion valve (40), an evaporator (50), a turbo intake fan (90), a suction chamber (70), a discharge chamber (80), a condenser precooler, and a control unit (300).

[0045] The above case (10) is installed at a predetermined height from the ground by a support frame (15). The upper, lower, left, right, front, and rear sides of the case (10) are provided with panels or doors to cover them, and the lower surface of the case (10) is formed in a shape in which the remaining part except for the grid-patterned frame is open to allow intake of outside air. The support frame (15) includes a plurality of vertical supports and horizontal supports that horizontally connect the vertical supports.

[0046] A plurality of front louvers (11) are provided on the front side (10a) of the case (10) to face the condenser (30). The front louvers (11) are each detachably coupled, so that when inspecting one of the plurality of condensers (30), only the front louver corresponding to the condenser to be inspected can be individually removed. A plurality of left-side doors (13) are provided on the lower side of the left side (10b) of the case (10), so that the doors can be opened and closed when inspecting the compressor (10) or the condenser (30).

[0047] On the right side (10c) of the case (10), an outlet (17) is formed so as to be connected to the outlet chamber (80) and to discharge air conditioned inside the case (10) to the outside of the case (10). A high-pressure hose (18) is connected to the outlet (17). The high-pressure hose (18) is a hose that connects the outlet (17) and the aircraft. On the right side (10c) of the case (10), a plurality of right-side doors (14) are provided in the remaining portion except for the portion where the outlet (17) is formed, so as to be openable and closeable when inspecting the evaporator (50) or the heater (400).

[0048] The lower surface of the case (10) is opened to form an intake port (16) for sucking external air into the interior of the case (10). The lower surface of the case (10) is formed to be open in all areas except for the frame for supporting the shape.

[0049] Referring to FIG. 5, the compressors (20) are arranged in the left space of the case (10), the control unit (300) is arranged at the rear of the compressors (20), the condensers (30) are arranged in a row at the front inside the case (10), the discharge chamber (80) is arranged in the right space of the case (10), and the suction chamber (70) and the turbo intake fan (90) are arranged in the central space between the compressors (20) and the discharge chamber (80) inside the case (10).

[0050] In this embodiment, the compressor (20), the condenser (30), the evaporator (50), the expansion valve (40) and the evaporator (50) form one refrigerant cycle, and the refrigerant cycles are individually provided in multiple numbers, and the refrigerants circulating in each of the multiple refrigerant cycles do not mix with each other. Hereinafter, in this embodiment, it is described as an example that a total of four refrigerant cycles are formed.

[0051] The compressor (20) is installed inside the case (10) and compresses the refrigerant. A plurality of compressors (20) are arranged at a predetermined interval from each other in the left space inside the case (10). In the present embodiment, the compressor (20) includes four compressors (21), (22), (23), and (24) of the first, second, third, and fourth types, and is described as an example in which the compressors (20) are arranged at a predetermined interval from each other in the front-back and left-right directions. However, the present invention is not limited thereto, and the number of compressors (20) can be applied in various ways.

[0052] The above condenser (30) condenses the refrigerant coming from the compressor (20). The condenser (30) includes four first, second, third, and fourth condensers (31)(32)(33)(34) corresponding to the first, second, third, and fourth compressors (21)(22)(23)(24), respectively. The number of the condensers (30) corresponds to the number of the compressors (20). The first, second, third, and fourth condensers (31)(32)(33)(34) are arranged in a row along the front side (10a) inside the case (10). Blowers (35)(36)(37)(38) for the first, second, third, and fourth condensers (31)(32)(33)(34) are installed in the first, second, third, and fourth condensers. The blowers (35), (36), (37), and (38) for the first, second, third, and fourth condensers respectively blow air inside the case (10) toward the first, second, third, and fourth condensers (31), (32), (33), and (34).

[0053] The above expansion valve (40) expands the refrigerant coming from the condenser (30). The above expansion valve (40) includes four first, second, third, and fourth expansion valves (41)(42)(43)(44) corresponding to the first, second, third, and fourth condensers (31)(32)(33)(34), respectively.

[0054] The above evaporator (50) is installed inside the discharge chamber (80) provided in the inner right space of the case (10). The evaporator (50) is a heat exchanger provided inside the discharge chamber (80) to exchange heat between air introduced into the discharge chamber (80) and refrigerant expanded in the expansion valve (40). The evaporator (50) is described as an example in which four first, second, third, and fourth evaporation channels (51), (52), (53), and (54) are stacked and provided as an integral unit.

[0055] The compressor (20), the condenser (30), the expansion valve (40), and the evaporator (50) are connected to a refrigerant passage (60) through which refrigerant circulates. The refrigerant passage is formed to correspond to the number of the compressors (20). The refrigerant passage (60) includes four 1st, 2nd, 3rd, and 4th refrigerant passages (61), (62), (63), and (64). The 1st, 2nd, 3rd, and 4th refrigerant passages (61), (62), (63), and (64) are each formed independently and are not connected to each other. The above first, second, third, and fourth compressors (21)(22)(23)(24), the first, second, third, and fourth condensers (31)(32)(33)(34), and the first, second, third, and fourth evaporation channels (51)(52)(53)(54) are connected to four independent first, second, third, and fourth refrigerant passages (61)(62)(63).

[0056] The turbo intake fan (90) is installed at the inner central side of the case (10) and sucks in air introduced into the case (10) at high pressure. The intake port of the turbo intake fan (90) is connected to the intake chamber (70), and the discharge port of the turbo intake fan (90) is connected to the discharge chamber (80).

[0057] The above suction chamber (70) is arranged at the rear inside of the case (10) and sucks in the internal air of the case (10) through the left side opening (70a) formed on the left side facing the first, second, third, and fourth compressors (21), (22), (23), and (24). The suction chamber (70) is arranged at the rear side of the case (10), and is formed such that its cross-sectional area gradually decreases from the left side opening (70a), and a front opening (70b) is formed at the front right side so that the front opening (70b) is formed to communicate with the turbo intake fan (90).

[0058] The above discharge chamber (80) is a chamber that connects the discharge port of the turbo intake fan (90) and the discharge port (17) of the case (10) and guides the air sucked through the turbo intake fan (90) toward the discharge port (17).

[0059] Meanwhile, the condenser precooler sprays the condensate generated in the evaporator (50) into the condenser (30) and uses it as cooling water to cool the air flowing into the condenser (300).

[0060] The above condenser precooler includes an evaporator condensate tank (100), a condensate supply path (110), a condensate supply valve, and a cooling water injector (130).

[0061] FIG. 6 is a drawing schematically showing the flow of refrigerant and condensate in an aircraft heating and cooling supply device according to an embodiment of the present invention. Referring to FIG. 6, the evaporator condensate tank (100) is a tank installed at the bottom of the evaporator (50) to collect condensate generated in the evaporator (50). The evaporator condensate tank (100) may be formed integrally with the evaporator (50), or may be detachably coupled to the bottom of the evaporator (50). The evaporator condensate tank (100) may be provided inside the discharge chamber (80), or may be installed so as to be in communication with the discharge chamber (80).

[0062] The above condensate supply path (110) is an evaporator condensate supply path that guides condensate stored in the evaporator condensate tank (100) to the condenser (30). A condensate pump (102) that pumps condensate stored in the evaporator condensate tank (100) is installed in the condensate supply path (110). A constant-flow pump is used as the condensate pump (102). The condensate supply path (110) is formed by branching into a plurality of paths such that one end is connected to the evaporator condensate tank (100) and the other end corresponds to the first, second, third, and fourth condensers (31), (32), (33), and (34), respectively. That is, the branch flow path of the above condensate supply path (110) includes four first, second, third, and fourth condensate supply paths (111)(112)(113)(114) corresponding to the first, second, third, and fourth condensers (31)(32)(33)(34).

[0063] In the above condensate supply path (110), a plurality of condensate supply valves are installed to control the condensate flowing into the plurality of condensers (30). The condensate supply valves include four first, second, third, and fourth condensate supply valves (121)(122)(123)(124) corresponding to the first, second, third, and fourth condensers (31)(32)(33)(34). The first condensate supply valve (121) is a cooling water flow control valve installed in the first condensate supply path (111) to control the flow rate of the condensate supplied to the first condensate supply path (111). The second condensate supply valve (122) is a cooling water flow control valve installed in the second condensate supply path (112) to control the flow rate of condensate supplied to the second condensate supply path (112). The third condensate supply valve (123) is a cooling water flow control valve installed in the second condensate supply path (112) to control the flow rate of condensate supplied to the second condensate supply path (112). The fourth condensate supply valve (124) is a cooling water flow control valve installed in the fourth condensate supply path (114) to control the flow rate of condensate supplied to the fourth condensate supply path (114). The above control unit (not shown) can control the opening rates of the first, second, third, and fourth condensate supply valves (121)(122)(123)(124) to be the same or different from each other.

[0064] Fig. 7 is an enlarged drawing of a condenser and a condenser precooler according to an embodiment of the present invention. Referring to Figs. 6 and 7, the cooling water injector (130) is a device provided in the condensate supply channel (110) to inject condensate supplied through the condensate supply channel (110) into each of the plurality of condensers (30).

[0065] The above cooling water injector (130) includes a spray path (131a) connected to the condensate supply path (110), and an injector (131b) provided in the spray path (131a) to inject condensate toward the condensers (30). A plurality of the injectors (131b) may be provided. The cooling water injector (130) includes four first, second, third, and fourth condensate injectors (131)(132)(133)(134) corresponding to the first, second, third, and fourth condensers (31)(32)(33)(34). The first condensate injector (131) is arranged upstream of the first condenser blower (35) to cool the air sucked into the first condenser blower (35). The second condensate injector (132) is arranged upstream of the second condenser blower (36) and cools the air sucked into the second condenser blower (36). The third condensate injector (133) is arranged upstream of the third condenser blower (37) and cools the air sucked into the third condenser blower (37). The fourth condensate injector (134) is arranged upstream of the fourth condenser blower (38) and cools the air sucked into the fourth condenser blower (38). Meanwhile, a condensate drain path (302) may be connected to the condensate supply path (110).

[0066] The above condensate drain path (302) is a path for discharging condensate that is not supplied from the condensate supply path (110) toward the condensers (30). A condensate drain valve (312) is installed in the condensate drain path (302). The condensate drain valve (312) is a solenoid valve that controls the flow rate of condensate discharged to the outside. The condensate drain valve (312) can be controlled according to the water level detected by the water level sensor (202). Meanwhile, the system may further include a condenser temperature sensor (not shown) that measures the temperature of the refrigerant discharged from the condenser (30) and a condenser pressure sensor (not shown) that measures the pressure of the refrigerant discharged from the condenser (30).

[0067] The above control unit (not shown) can control the opening rates of the first, second, third, and fourth condensate supply valves (111)(112)(113)(114) and the condensate drain valve (312) according to the values ​​of at least one of the condenser temperature sensor (not shown) and the condenser pressure sensor (not shown). In addition, the control unit (not shown) can control the opening rates of the first, second, third, and fourth condensate supply valves (111)(112)(113)(114) and the condensate drain valve (312) by reflecting the outside temperature, i.e., the temperature of the air condensed into the inside of the case (10).

[0068] In addition, the air conditioning and heating supply device for the aircraft further includes an electric heater (400) installed on the downstream side of the evaporator (50) inside the discharge chamber (80) to heat the discharge air when supplying heating air to the aircraft.

[0069] The operation of the aircraft heating and cooling supply device according to the first embodiment of the present invention configured as described above is described as follows.

[0070] Referring to Fig. 6, the refrigerant passes through the compressor (20), the condenser (30), the expansion valve (40), and the evaporator (50) in sequence and then circulates back to the compressor (20). At this time, the refrigerants compressed in the first, second, third, and fourth compressors (21), (22), (23), and (24) do not mix with each other and circulate independently along the first, second, third, and fourth refrigerant passages (61), (62), (63), and (64), respectively.

[0071] The refrigerant compressed in the first, second, third, and fourth compressors (21)(22)(23)(24) respectively flows into the first, second, third, and fourth condensers (31)(32)(33)(34) respectively. The refrigerant condensed and discharged in the first, second, third, and fourth condensers (31)(32)(33)(34) respectively expands in the first, second, third, and fourth expansion valves (41)(42)(43)(44) respectively and then flows into the evaporator (50).

[0072] The refrigerant introduced into the first, second, third, and fourth evaporation channels (51), (52), (53), and (54) of the evaporator (50) is evaporated through heat exchange with the air passing through the discharge chamber (80). In the evaporator (50), the refrigerant absorbs heat from the air and is evaporated.

[0073] The air sucked by the turbo intake fan (90) through the suction chamber (70) passes through the discharge chamber (80). The air cooled in the evaporator (50) is supplied to the aircraft cabin through the discharge port (17) and the high-pressure hose (18). At this time, low-temperature condensate is generated in the evaporator (50). The condensate generated in the evaporator (50) is collected in the evaporator condensate tank (100).

[0074] The above control unit (300) operates the condensate pump (102) to pump the low-temperature condensate collected in the evaporator condensate tank (100). The condensate pumped by the condensate pump (102) is distributed and supplied to the plurality of condensers (30) through the condensate supply path (110). The flow rate of the condensate distributed to the plurality of condensers (30) can be preset. The flow rates of the condensate supplied to the first, second, third, and fourth condensers (31), (32), (33), and (34) can be set to be the same or different. The flow rates can be set differently depending on the operation or cooling / heating load of the first, second, third, and fourth compressors (21), (22), (23), and (24) or the condensation temperatures of the first, second, third, and fourth condensers (31), (32), (33), and (34).

[0075] When the control unit (not shown) opens the first condensate supply valve (211), the condensate supplied through the first condensate supply path (111) is sprayed toward the blower (35) for the first condenser through the first condensate sprayer (131). The condensate sprayed through the first condensate sprayer (131) pre-cools the air before being supplied to the first condenser (31). By directly spraying the condensate into the air, the heat exchange area between the air and the condensate increases, so that the heat transfer rate can be further improved. The air pre-cooled by the condensate is supplied to the first condenser (31) and heat-exchanges with the refrigerant inside the first condenser (31). Therefore, since the air cooled by the condensate is introduced into the first condenser (31), the condensation temperature of the refrigerant in the first condenser (31) can be further lowered.

[0076] In addition, when the control unit (not shown) opens the second condensate supply valve (212), the condensate supplied through the second condensate supply path (112) is sprayed toward the blower (36) for the second condenser through the second condensate sprayer (132). The condensate sprayed through the second condensate sprayer (132) pre-cools the air before being supplied to the second condenser (32). By directly spraying the condensate into the air, the heat exchange area between the air and the condensate increases, so that the heat transfer rate can be further improved. The air pre-cooled by the condensate is supplied to the second condenser (32) and exchanges heat with the refrigerant inside the second condenser (32). Therefore, since the air cooled by the condensate is introduced into the second condenser (32), the condensation temperature of the refrigerant in the second condenser (32) can be lowered further.

[0077] In addition, when the control unit (not shown) opens the third condensate supply valve (213), the condensate supplied through the third condensate supply path (113) is sprayed toward the third condenser blower (37) through the third condensate injector (133). The condensate sprayed through the third condensate injector (133) pre-cools the air before being supplied to the third condenser (33). By directly spraying the condensate into the air, the heat exchange area between the air and the condensate increases, so that the heat transfer rate can be further improved. The air pre-cooled by the condensate is supplied to the third condenser (33) and exchanges heat with the refrigerant inside the third condenser (33). Therefore, since the air cooled by the condensate is introduced into the third condenser (33), the condensation temperature of the refrigerant in the third condenser (33) can be lowered further.

[0078] In addition, when the control unit (not shown) opens the fourth condensate supply valve (214), the condensate supplied through the fourth condensate supply path (114) is sprayed toward the fourth condenser blower (38) through the fourth condensate injector (134). The condensate sprayed through the fourth condensate injector (134) pre-cools the air before being supplied to the fourth condenser (34). By directly spraying the condensate into the air, the heat exchange area between the air and the condensate increases, so that the heat transfer rate can be further improved. The air pre-cooled by the condensate is supplied to the fourth condenser (34) and exchanges heat with the refrigerant inside the fourth condenser (34). Therefore, since the air cooled by the condensate is introduced into the fourth condenser (34), the condensation temperature of the refrigerant in the fourth condenser (34) can be lowered further.

[0079] The flow rates of condensate supplied to the first, second, third, and fourth condensers (31), (32), (33), and (34) can be adjusted to be the same or at least partially different by controlling the opening rates of the first, second, third, and fourth condensate supply valves (211), (212), (213), and (214).

[0080] Meanwhile, among the condensate that has flowed into the condensate supply channel (110), the remaining condensate that has flowed into the first, second, third, and fourth condensate supply channels (111), (112), (113), and (114) can be discharged through the condensate drain channel (302). In addition, the control unit (300) can control the opening and closing of the condensate drain valve (312) according to the water level detected by the water level sensor (202). When the water level detected by the water level sensor (202) exceeds a preset water level, the condensate drain valve (312) can be opened to discharge the remaining condensate that is not supplied to the condensers (30) to the outside.

[0081] As described above, the air conditioning and heating device for an aircraft according to the present invention can be compact while improving energy efficiency by efficiently arranging components such as a plurality of compressors (20), a plurality of condensers (30), a turbo intake fan (90), and an evaporator (50) inside the case (10). In addition, by utilizing the condensate from the evaporator (50) to precool the air in the condensers (30), the condensation temperature of the condensers (30) can be lowered and the discharge temperature of the compressors (20) can be lowered, so that the performance coefficient of the air conditioning and heating device can be improved.

[0082] Meanwhile, Fig. 8 is a schematic diagram showing condensers and condenser precoolers in an aircraft heating and cooling supply device according to a second embodiment of the present invention. Referring to Fig. 8, an aircraft heating and cooling supply device according to a second embodiment of the present invention includes a plurality of condensers respectively provided in a plurality of refrigerant cycles, and at least some of the plurality of condensers are arranged in series at a predetermined interval from each other along the air flow direction (X) so that the injection flow rate of cooling water supplied to the series-arranged condensers can be differently controlled, which is different from the first embodiment, and the remaining configurations and operations are similar, so that a detailed description of the similar configurations will be omitted and a detailed description will be given focusing on the differences.

[0083] The above multiple refrigerant cycles are explained as including a total of four refrigerant cycles in which the refrigerants are not mixed with each other. The above multiple condensers include a total of four first, second, third, and fourth condensers (401), (402), (403), and (404).

[0084] The first condenser (401) and the second condenser (402) are arranged in series at a predetermined interval from each other along the air flow direction (X) so that air passes through them one by one. That is, for example, air passing through the first condenser (401) passes through the second condenser (402). In addition, the third condenser (403) and the fourth condenser (404) are arranged in series at a predetermined interval from each other along the air flow direction (X) so that air passes through them one by one. That is, for example, air passing through the third condenser (403) passes through the fourth condenser (404). The first, second, third, and fourth condensers (401), (402), (403), and (404) are each provided with blower fans (431), (432), (433), and (434) for the first, second, third, and fourth condensers, respectively. However, the present invention is not limited thereto, and it is also possible for blower fans to be provided only in some of the first, second, third, and fourth condensers (401), (402), (403), and (404). In this embodiment, an example in which the condenser and the blower fan are integrally coupled is described, but the present invention is not limited thereto, and it is also possible for the blower fan to be provided separately from the condenser and placed at a predetermined distance from the condenser.

[0085] The above condenser precooler can spray at least a portion of the condensate generated in the evaporator (50) and the feedwater supplied from the outside toward the first, second, third, and fourth condensers (401), (402), (403), and (404). In the present embodiment, the condenser precooler is described as using both the condensate generated in the evaporator (50) and the feedwater supplied from the outside. However, the present invention is not limited thereto, and it is of course possible to use only one of the condensate generated in the evaporator (50) and the feedwater supplied from the outside.

[0086] The above condenser precooler includes a cooling water supply path (410) for supplying condensate generated in the evaporator (50) and externally supplied feed water, a first cooling water supply path (411) branched from the cooling water supply path (410) to supply cooling water to the first condenser (401), a second cooling water supply path (412) branched from the cooling water supply path (410) to supply cooling water to the second condenser (402), a third cooling water supply path (413) branched from the cooling water supply path (410) to supply cooling water to the third condenser (403), and a fourth cooling water supply path (414) branched from the cooling water supply path (410) to supply cooling water to the fourth condenser (404).

[0087] The above cooling water supply path (410) includes an evaporator condensate supply path connected to an evaporator condensate tank (not shown) that collects condensate generated in the evaporator, and an external cooling water supply path that receives water from the outside. In addition, the condenser precooler includes a first cooling water flow control valve (421) installed in the first cooling water supply path (411) to control the flow rate of cooling water supplied to the first condenser (401), a second cooling water flow control valve (422) installed in the second cooling water supply path (412) to control the flow rate of cooling water supplied to the second condenser (402), a third cooling water flow control valve (423) installed in the third cooling water supply path (413) to control the flow rate of cooling water supplied to the third condenser (403), and a fourth cooling water flow control valve (424) installed in the fourth cooling water supply path (414) to control the flow rate of cooling water supplied to the fourth condenser (404).

[0088] In addition, the condenser precooler includes a first coolant injector (411a) provided in the first coolant supply path (411), a second coolant injector (412a) provided in the second coolant supply path (412), a third coolant injector (413a) provided in the third coolant supply path (413), and a fourth coolant injector (414a) provided in the fourth coolant supply path (414). The first, second, third, and fourth coolant injectors (411a)(412a)(413a)(414a) are described as injection nozzles by way of example.

[0089] The above control unit (not shown) can control the opening rates of the first, second, third, and fourth cooling water flow control valves (421)(422)(423)(424) to be the same or different from each other. The above control unit (not shown) can control the opening rates of the first, second, third, and fourth cooling water flow control valves (421)(422)(423)(424) to control the cooling water flow rates injected into the first, second, third, and fourth condensers (401)(402)(403)(404), respectively. The above control unit (not shown) can control the opening rate of the first, second, third, and fourth cooling water flow control valves (421)(422)(423)(424) according to the temperature and pressure of the refrigerant or the temperature of the outside air coming from the first, second, third, and fourth condensers (401)(402)(403)(404), respectively. In addition, the control unit (not shown) is explained as controlling the flow rate of cooling water injected to a condenser closer to the upstream side with respect to the air flow direction among the condensers arranged in series so that it is greater than the flow rate of cooling water injected to the remaining condensers.

[0090] That is, in the present embodiment, since the first condenser (401) and the second condenser (402) are arranged sequentially so that air passes through them in sequence, the flow rate of cooling water injected into the first condenser (401), into which air is introduced relatively first, can be controlled to be greater than the flow rate of cooling water injected into the second condenser (402). When air passes through the first condenser (401) and the second condenser (402) in sequence, since the temperature of the air introduced into the first condenser (401) is relatively higher than the temperature of the air introduced into the second condenser (402), the cooling efficiency can be further improved by making the flow rate of cooling water injected into the first condenser (401) greater than the flow rate of cooling water injected into the second condenser (402). The flow rate of the cooling water injected into the first condenser (401) and the flow rate of the cooling water injected into the second condenser (402) can be set at a predetermined ratio depending on the temperature of the outside air, the temperature of the refrigerant coming out of the first and second condensers (401) (402), etc.

[0091] In addition, since the third condenser (403) and the fourth condenser (404) are arranged sequentially so that air passes through them in sequence, the flow rate of cooling water injected into the third condenser (403), into which air flows in relatively first, can be controlled to be greater than the flow rate of cooling water injected into the fourth condenser (404). The flow rates of cooling water injected into the third condenser (403) and the flow rates of cooling water injected into the fourth condenser (404) can be set at a predetermined ratio depending on the temperature of the outside air, the temperature of the refrigerant coming out of the third and fourth condensers (403) (404), etc.

[0092] As described above, in the second embodiment of the present invention, when at least some of the condensers are arranged in series so that air passes through them in sequence, the cooling efficiency can be maximized by controlling the injection flow rate of the cooling water differently depending on the position of the condensers.

[0093] In the above embodiment, two condensers are arranged in series, but this is not a limitation, and three or more condensers can also be arranged in series. When three or more condensers are arranged in series, the cooling water injection flow rate can be set differently depending on the distance from the air inlet side.

[0094] Meanwhile, Fig. 9 is a schematic diagram showing condensers and condenser precoolers in an aircraft heating and cooling supply device according to a third embodiment of the present invention. Referring to Fig. 9, the aircraft heating and cooling supply device according to the third embodiment of the present invention has a configuration in which at least some of the plurality of condensers are arranged in series at a predetermined interval from each other along the air flow direction (X), and the condenser precoolers are provided only in a condenser arranged upstream with respect to the air flow direction among the continuously arranged condensers, which is different from the second embodiment, and the remaining configurations and functions are similar, so a detailed description of the similar configurations will be omitted and a detailed description will be given focusing on the differences.

[0095] The above-described plurality of condensers include a total of four first, second, third, and fourth condensers (501), (502), (503), and (504). The first condenser (501) and the second condenser (502) are arranged in series so that air passes through them one after another at a predetermined interval along the air flow direction (X), and air passing through the first condenser (501) passes through the second condenser (502), for example. In addition, the third condenser (503) and the fourth condenser (504) are arranged in series so that air passes through them one after another at a predetermined interval along the air flow direction (X), and air passing through the third condenser (503) passes through the fourth condenser (504), for example.

[0096] For example, among the first, second, third, and fourth condensers (501), (502), (503), and (504), only the first and third condensers (501) and (503) arranged upstream with respect to the air flow direction (X) are provided with blower fans (531) and (533) for the first and third condensers. However, this is not limited to this, and it is of course possible for all of the first, second, third, and fourth condensers (501), (502), (503), and (504) to be provided with blower fans.

[0097] In this embodiment, the condenser precooler is described as an example in which it is provided only in a condenser arranged upstream with respect to the air flow direction (X) among the condensers arranged in series. That is, the condenser precooler is described as an example in which it is provided only in the first condenser (501) among the first condenser (501) and the second condenser (502) arranged in series, and is described as an example in which it is provided only in the third condenser (503) among the third condenser (503) and the fourth condenser (504) arranged in series. In this embodiment, the condenser precooler is described as an example in which it uses both the condensate generated in the evaporator (50) and the feedwater supplied from the outside. However, the present invention is not limited thereto, and it is of course possible to use only one of the condensate generated in the evaporator (50) and the feedwater supplied from the outside.

[0098] The above condenser precooler includes a cooling water supply path (510) for supplying condensate generated in the evaporator (50) and externally supplied feed water, a first cooling water supply path (511) branching from the cooling water supply path (510) to supply cooling water to the first condenser (501), and a fifth cooling water supply path (513) branching from the cooling water supply path (510) to supply cooling water to the third condenser (503).

[0099] A first cooling water flow control valve (521) is installed in the first cooling water supply path (511) to control the flow rate of cooling water supplied to the first condenser (501). A third cooling water flow control valve (523) is installed in the third cooling water supply path (513) to control the flow rate of cooling water supplied to the third condenser (503).

[0100] The above condenser precooler includes a first coolant injector (511a) provided in the first coolant supply passage (511) and a third coolant injector (513a) provided in the third coolant supply passage (513). The first coolant injector (511a) and the third coolant injector (513a) are described as injection nozzles, for example.

[0101] The above control unit can control the cooling water flow rate injected into the first and third condensers (501)(503) by controlling the first and third cooling water flow rate control valves (521)(523), respectively. The control unit can control the opening rate of the first and third cooling water flow rate control valves (521)(523) according to the temperature and pressure of the refrigerant or the temperature of the outside air coming from the first, second, third, and fourth condensers (501)(502)(503)(504), respectively.

[0102] As described above, the air conditioning and heating supply device for an aircraft according to the third embodiment of the present invention has a condenser precooler that sprays cooling water only to a condenser positioned upstream with respect to the air flow direction among condensers positioned in series, thereby minimizing the amount of cooling water used and having a simpler structure while improving cooling efficiency.

[0103] Meanwhile, Fig. 10 is a schematic diagram showing condensers and condenser precoolers in an aircraft heating and cooling supply device according to a fourth embodiment of the present invention. Referring to Fig. 10, an aircraft heating and cooling supply device according to a fourth embodiment of the present invention includes a plurality of condensers respectively provided in a plurality of refrigerant cycles, and at least some of the plurality of condensers are combined into an integral module in a configuration different from the above embodiments, and the remaining configuration and operation are similar, so a detailed description of the similar configuration will be omitted and a detailed description will be given focusing on the differences.

[0104] The above-described plurality of condensers are explained as including first and second condensers (601) (602) included in different first and second refrigerant cycles. The first condenser (601) and the second condenser (602) are separate heat exchangers through which different refrigerants pass, but can be combined into an integral module. The first condenser (601) is equipped with a first condenser blower fan (631), and the second condenser (602) is equipped with a second condenser blower fan (632).

[0105] The condenser precooler can spray at least a portion of the condensate generated in the evaporator (50) and the externally supplied feed water toward the first and second condensers (601) (602), respectively. The condenser precooler is described as including, for example, a cooling water supply path (610) for supplying the condensate generated in the evaporator (50) and the externally supplied feed water, a first cooling water supply path (611) branched from the cooling water supply path (610) for supplying cooling water to the first condenser (601), and a second cooling water supply path (612) branched from the cooling water supply path (610) for supplying cooling water to the second condenser (602).

[0106] A first cooling water flow control valve (621) is installed in the first cooling water supply path (611) to control the flow rate of cooling water supplied to the first condenser (601). A second cooling water flow control valve (622) is installed in the second cooling water supply path (612) to control the flow rate of cooling water supplied to the second condenser (602). In addition, the condenser precooler includes a first cooling water injector (611a) installed in the first cooling water supply path (611) and a second cooling water injector (612a) installed in the second cooling water supply path (612).

[0107] The above control unit can control the cooling water flow rate injected into the first and second condensers (601) (602) by controlling the first and second cooling water flow rate control valves (621) (622), respectively.

[0108] In this embodiment, the cooling water is individually supplied to and controlled by the first condenser (601) and the second condenser (602) as an example, but it is not limited to this and it is of course also possible to supply or control simultaneously.

[0109] Meanwhile, Fig. 11 is a schematic diagram of a condenser precooler and a condenser tube in an aircraft heating and cooling supply device according to a fifth embodiment of the present invention. Referring to Fig. 11, the aircraft heating and cooling supply device according to the fifth embodiment of the present invention is different from the above embodiments in that it further includes a condenser tube (750) that is provided inside or outside the condenser (700) and heat-exchanges air with condensate supplied from an evaporator condensate tank (not shown) that collects condensate generated in the evaporator (50), and the remaining configurations and operations are similar, so a detailed description of similar configurations will be omitted and a detailed description will be given focusing on the differences.

[0110] The above condensate tube (750) is a multi-bent tube, and is described as a fin tube, for example. The condensate tube (750) is provided on the intake side of the condenser (700). The condensate tube (750) is described as being arranged between the condenser (700) and the condenser blower (730), for example. However, the present invention is not limited thereto, and the condensate tube (750) may of course be provided between the cooling water supply path (710) of the condenser precooler and the condenser blower (730).

[0111] The air flowing into the condenser (700) may be first cooled by cooling water sprayed from the condenser precooler, and secondarily cooled in the condensate tube (750). Therefore, the condensation temperature of the refrigerant in the condenser (700) may be further lowered. In addition, the aircraft heating and cooling supply device further includes a condensate circulation path (760) for circulating condensate, which has exchanged heat with air while passing through the condensate tube (750), to at least one of the evaporator condensate tank (not shown) and the evaporator condensate supply path (710), a condensate drain path (770) for discharging to the outside at least a portion of the condensate before it branches off from the condensate circulation path (760) and flows into the evaporator condensate tank (not shown), a condensate temperature sensor, a condensate circulation valve (765), and a condensate drain valve (775).

[0112] The above control unit, when the temperature of the condensate detected by the condensate temperature sensor (not shown) is lower than a preset first set temperature, opens the condensate circulation valve (765) and blocks the condensate drain valve (775), thereby controlling the condensate from the condensate tube (750) to circulate to the evaporator condensate tank (not shown).

[0113] In addition, if the temperature of the condensate detected by the condensate temperature sensor (not shown) exceeds the first set temperature, the condensate circulation valve (765) is blocked and the condensate drain valve (775) is opened. Since the temperature of the condensate coming out of the condensate tube (750) is determined to be too high to be reused, the condensate is discharged to the outside.

[0114] The above condensate temperature sensor (not shown) is installed in the condensate circulation path (770) and measures the temperature of the condensate flowing into the condenser circulation path (770). That is, the control unit (not shown) determines whether to reuse the condensate based on the temperature of the condensate coming out of the condensate tube (750). Accordingly, by determining whether to circulate to the evaporator condensate tank (not shown) based on the temperature of the condensate coming out after heat exchange in the condensate tube (750), the temperature of the condensate inside the evaporator condensate tank (not shown) can be maintained within a predetermined range. That is, when the temperature of the condensate in the evaporator condensate tank (not shown) is maintained within a predetermined range, the effect of cooling the air can be secured when the condensate is supplied to the condensate tube (750).

[0115] In addition, the evaporator condensate tank (not shown) is equipped with a water level sensor, so that at least a portion of the condensate before flowing into the evaporator condensate tank (not shown) can be discharged to the outside through the condensate drain path (760) according to the water level detected by the water level sensor.

[0116] The configuration of the condensate tube (750) according to this embodiment can be applied to all of the first embodiment to the fourth embodiment.

[0117] Fig. 12 shows an example of installation of a cooling water injector in an aircraft heating and cooling supply device according to the sixth embodiment of the present invention.

[0118] Referring to FIG. 12, an aircraft heating and cooling supply device according to a sixth embodiment of the present invention includes a condenser blower fan (830) mounted on an intake side of a condenser (900), a fan motor (835) for driving the condenser blower fan (830), a bell mouth (850) for guiding air sucked into the condenser blower fan (830), and a motor stand (860) for supporting the fan motor (835), and a cooling water sprayer (810) of a condenser precooler is described as being installed in at least one of the bell mouth (850) and the motor stand (860).

[0119] In this embodiment, the cooling water injector (810) is described as an example of a spray nozzle provided to inject cooling water from the motor mount (860) toward the condenser (900). However, the present invention is not limited thereto, and a plurality of cooling water injectors (810) may be provided at predetermined intervals on the inner surface of the bell mouth (850) toward the condenser (900). In addition, it is also possible for the cooling water supply path of the condenser plycooler to be provided in the bell mouth (850) and the motor mount (860).

[0120] The structure of the coolant injector (810) according to the present embodiment can be applied to all of the first embodiment to the fifth embodiment. Meanwhile, the refrigerant cycle illustrated in Fig. 6 discloses a refrigeration cycle that performs cooling operation. However, the present invention is not limited thereto, and the heating and cooling supply device for an aircraft according to the present invention can further include a heating and cooling switching valve (not shown, for example, a four-way valve) on the discharge side of the compressor (10), thereby configuring a heat pump capable of both cooling and heating operation.

[0121] The above-mentioned heating / cooling switching valve (not shown) switches the flow path so that, during cooling operation, the refrigerant from the compressor (10) is guided to the outdoor heat exchanger that functions as the condenser (30), and, during heating operation, the refrigerant from the compressor (10) is guided to the indoor heat exchanger that functions as the condenser (30), thereby enabling the heater pump to perform both cooling and heating operations.

[0122] The configuration of the above heat pump can be applied to all of the first to sixth embodiments. When the heat pump performs a refrigerant cycle as described above, a condenser precooler according to at least one of the first to sixth embodiments may be provided in the outdoor heat exchanger that functions as the condenser (30) during the cooling operation.

[0123] While the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims.

[0124] The present invention can be used to manufacture an aircraft heating and cooling supply device with an improved coefficient of performance.

Claims

1. In an aircraft cooling and heating supply device installed in an airport apron and supplying cooling or heating air to the aircraft cabin through a high-pressure hose, At least one refrigerant cycle including compression, condensation, expansion and evaporation of the refrigerant is performed, including a compressor, a condenser, an expansion valve and an evaporator, A condenser precooler that uses at least a portion of the condensate generated in the evaporator and the externally supplied feed water as cooling water to cool the air flowing into the condenser by spraying the condensate to the intake side of the condenser. Air conditioning and heating supply system for aircraft.

2. In claim 1, The above condenser precooler, An evaporator condensate supply path for guiding condensate generated in the above evaporator to the above condenser, Further comprising a cooling water injector connected to the evaporator condensate supply path and injecting condensate supplied from the evaporator condensate supply path toward the condenser. Air conditioning and heating supply system for aircraft.

3. In claim 1, The above condenser precooler, An external cooling water supply path for guiding externally supplied water to the condenser, Further comprising a cooling water injector connected to the external cooling water supply path and injecting cooling water supplied from the external cooling water supply path toward the condenser. Air conditioning and heating supply system for aircraft.

4. In claim 1, The above condenser precooler, An evaporator condensate supply path for guiding condensate generated in the above evaporator to the above condenser, An external cooling water supply path for guiding externally supplied water to the condenser, Further comprising a cooling water injector that injects cooling water supplied from at least one of the evaporator condensate supply path and the external cooling water supply path toward the condenser. Air conditioning and heating supply system for aircraft.

5. In claim 1, It further includes a condenser blower fan that blows air to the condenser, and a bell mouth that is provided on the intake side of the condenser and guides air sucked into the condenser blower fan. The above condenser precooler, A cooling water supply path that guides at least a portion of the condensate generated in the evaporator and the externally supplied water to the intake side of the condenser, Further comprising a cooling water injector connected to the cooling water supply line and provided in the bell mouth to inject cooling water toward the condenser. Air conditioning and heating supply system for aircraft.

6. In claim 1, It further includes a condenser blower fan for blowing air to the condenser, a blower fan motor for driving the condenser blower fan, and a motor stand formed to support the blower fan motor. The above condenser precooler, A cooling water supply path that guides at least a portion of the condensate generated in the evaporator and the externally supplied water to the intake side of the condenser, Further comprising a cooling water injector connected to the cooling water supply path and provided on the motor mount, for injecting cooling water toward the condenser. Air conditioning and heating supply system for aircraft.

7. In claim 1, The above refrigerant cycle is configured in multiple parallel configurations, The above condensers are provided in multiple numbers to be included in each of the plurality of refrigerant cycles, and at least some of the plurality of condensers are arranged in series so that air passes through them sequentially, spaced apart from each other at a predetermined interval along the direction of air flow. Air conditioning and heating supply system for aircraft.

8. In claim 7, The above condenser precooler, A plurality of cooling water supply paths formed to guide at least a portion of the condensate generated in the evaporator and the externally supplied feed water to the condenser arranged upstream with respect to the air flow direction among the continuously arranged condensers, A cooling water injector connected to the above cooling water supply lines and arranged to inject cooling water, Air conditioning and heating supply system for aircraft.

9. In claim 7, The above condenser precooler, A plurality of cooling water supply channels formed to guide at least a portion of the condensate generated in the evaporator and the externally supplied feed water to the plurality of condensers, respectively; A plurality of coolant injectors that are respectively connected to the above coolant supply channels and spray coolant, A plurality of coolant flow control valves are installed in each of the coolant supply channels and control the flow rate of coolant injected through each of the plurality of coolant injectors. Air conditioning and heating supply system for aircraft.

10. In claim 9, Further comprising a control unit that controls the cooling water flow control valves so that the flow rate of cooling water injected to a condenser closer to the upstream side with respect to the air flow direction among the continuously arranged condensers is greater than the flow rate of cooling water injected to the remaining condensers. Air conditioning and heating supply system for aircraft.

11. In claim 1, The above refrigerant cycle is configured in multiple parallel configurations, The above condensers are provided in multiple numbers to be included in each of the multiple refrigerant cycles, and the multiple condensers are arranged in parallel with respect to the direction of air flow so that air passes through them individually. Air conditioning and heating supply system for aircraft.

12. In claim 11, The above condenser precooler, A plurality of cooling water supply channels formed to guide at least a portion of the condensate generated in the evaporator and the externally supplied feed water to the plurality of condensers, A plurality of cooling water injectors each connected to the plurality of cooling water supply channels and each injecting cooling water toward the plurality of condensers, Further comprising a plurality of coolant flow control valves installed in each of the coolant supply channels to control the flow rate of coolant injected through each of the plurality of coolant injectors. Air conditioning and heating supply system for aircraft.

13. In claim 9 or claim 12, A condenser temperature sensor that measures the temperature of the refrigerant coming from the condenser, A condenser pressure sensor that measures the pressure of the refrigerant coming from the condenser, Further comprising a control unit that controls the operation of the plurality of cooling water flow control valves according to a value detected by at least one of the outside temperature, the condenser temperature sensor and the condenser pressure sensor. Air conditioning and heating supply system for aircraft.

14. In claim 1, An evaporator condensate tank installed at the bottom of the evaporator to collect condensate generated in the evaporator, An evaporator condensate supply path for guiding condensate stored in the evaporator condensate tank to the condenser, Further comprising a condensate tube connected to the evaporator condensate supply path and provided on at least one side of the inside and outside of the condenser to exchange heat with the condensate supplied from the evaporator condensate supply path and air to cool the air flowing into the condenser. Air conditioning and heating supply system for aircraft.

15. In claim 14, Further comprising a condensate circulation path for circulating the condensate passing through the condensate tube to at least one of the evaporator condensate tank and the evaporator condensate supply path. Air conditioning and heating supply system for aircraft.

16. In claim 15, A condensate drain path branched from the above condensate circulation path and discharging at least a portion of the condensate before it flows into the evaporator condensate tank to the outside; A condensate temperature sensor installed in the above condensate circulation path to measure the temperature of the condensate before it flows into the evaporator condensate tank, A condensate circulation valve installed in the above condensate circulation path, A condensate drain valve installed in the above condensate drain path, If the temperature of the condensate measured by the condensate temperature sensor is lower than or equal to a first preset temperature, the control unit further includes a control unit that opens the condensate circulation valve and blocks the condensate drain valve to circulate the condensate from the condenser to the evaporator condensate tank. Air conditioning and heating supply system for aircraft.

17. In an aircraft cooling and heating supply device installed in an airport apron and supplying cooling or heating air to the cabin of an aircraft through a high-pressure hose, At least one refrigerant cycle including compression, condensation, expansion and evaporation of the refrigerant is performed, including a compressor, a condenser, an expansion valve and an evaporator, A condenser precooler is included that uses at least a portion of the condensate generated in the evaporator and the externally supplied feed water as cooling water to cool the air flowing into the condenser by spraying the condensate to the intake side of the condenser. The above condenser precooler, An evaporator condensate tank installed at the bottom of the evaporator to collect condensate generated in the evaporator, An evaporator condensate supply path for guiding condensate generated in the above evaporator to the above condenser, An external cooling water supply path for guiding externally supplied water to the condenser, A cooling water injector that injects cooling water supplied from at least one of the evaporator condensate supply path and the external cooling water supply path toward the condenser, A condensate tube connected to the evaporator condensate supply path and provided on at least one side of the inside and outside of the condenser to exchange heat with condensate supplied from the evaporator condensate supply path and air to cool the air flowing into the condenser. Air conditioning and heating supply system for aircraft.

18. In claim 1 or claim 17, The above refrigerant cycle is performed by a heat pump including the compressor, the expansion valve, the evaporator, and the heating / cooling switching valve. Air conditioning and heating supply system for aircraft.

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