Air conditioner

Abstract

The present invention relates to an air conditioner. The air conditioner, according to an embodiment of the present invention, may comprise a plurality of cycle units in which a refrigerant circulates to dehumidify air. At least one of the plurality of cycle units may include: an outdoor unit having a compressor and an outdoor heat exchanger; and an air treatment device having heat exchangers fluidically connected to the outdoor unit to recover heat or perform cooling dehumidification.

Description

air conditioner

[0001] The present invention relates to an air conditioning device.

[0002] An air conditioner is a device that maintains the air in a given space at the most suitable condition for its intended use or purpose. Typically, the air conditioner includes a compressor, a condenser, an expansion device, and an evaporator, and operates a refrigeration cycle that compresses, condenses, expands, and evaporates a refrigerant, thereby cooling or heating the space.

[0003] The above-mentioned designated space may be proposed in various ways depending on the location where the air conditioner is used. For example, if the air conditioner is placed in a home or office, the above-mentioned designated space may be an indoor space of the home or building.

[0004] When an air conditioner performs cooling operation, the outdoor heat exchanger provided in the outdoor unit functions as a condenser, and the indoor heat exchanger provided in the indoor unit functions as an evaporator. On the other hand, when the air conditioner performs heating operation, the indoor heat exchanger functions as a condenser, and the outdoor heat exchanger functions as an evaporator.

[0005] Air conditioning units can be used as industrial air conditioning equipment. Typically, low-humidity air conditioning equipment used in industrial settings utilizes refrigerant or chilled water coils for primary cooling and dehumidification, followed by a dehumidifying rotor for secondary dehumidification to reduce the absolute humidity to the target level.

[0006] In addition, secondary cooling dehumidification is performed using a refrigerant or cold water coil to reduce the air temperature that has risen due to the high temperature during regeneration of the dehumidifying rotor back to the target level.

[0007] When operating the cooling cycle to perform the first and second cooling and dehumidification processes described above, high-temperature waste heat can be generated in the radiator, waste heat is also generated in the air discharged for ventilation, and a large amount of waste heat is also discharged through the exhaust after the dehumidifying rotor regenerates. This waste heat discharge increases energy consumption and reduces the operating efficiency of the device.

[0008] The purpose of the present invention is to provide an air conditioning device having a plurality of cycle sections capable of supplying dehumidified air to an indoor space.

[0009] The purpose of the present invention is to provide an air conditioning device including an air treatment device having a plurality of outdoor units for driving the plurality of cycle units, and a heat exchanger connected to the plurality of outdoor units, and capable of treating air flowing within a flow path.

[0010] The purpose of the present invention is to provide an air conditioning device having a heat recovery coil as a heat exchanger capable of recovering waste heat generated while operating a plurality of cycle units.

[0011] The purpose of the present invention is to provide an air conditioning device having a regeneration coil as a heat exchanger for performing regeneration of a dehumidifying rotor by using waste heat generated while operating a plurality of cycle units.

[0012] The purpose of the present invention is to provide an air conditioning device capable of improving dehumidification performance or heating efficiency by arranging a heat exchange coil for cooling, dehumidification, or heating in a supply side passage section.

[0013] The purpose of the present invention is to provide an air conditioning device that arranges a plurality of heat exchange coils and can selectively operate some or all of the heat exchange coils among the plurality of heat exchange coils depending on the operation mode.

[0014] The purpose of the present invention is to provide an air conditioning device having a first flow path (supply air flow path) in which a plurality of heat exchange coils and dehumidifying rotors can be arranged to introduce outside air and dehumidify or increase the temperature of the introduced outside air.

[0015] The present invention aims to provide an air conditioning device having a second flow path (regeneration flow path) that forms a flow path for introducing outside air and regenerating a dehumidifying rotor using the introduced outside air.

[0016] The purpose of the present invention is to provide an air conditioning device capable of recovering air heat by installing a bypass flow path between the first flow path and the second flow path and allowing air to bypass between the flow paths through the bypass flow path.

[0017] The purpose of the present invention is to provide an air conditioning device capable of reducing the load of a regeneration heater by providing a high-temperature extraction device capable of raising the regeneration temperature of a dehumidifying rotor by circulating a different type of refrigerant from the refrigerant circulating in the outdoor unit.

[0018] An air conditioning device according to an embodiment of the present invention may include a plurality of cycle sections through which a refrigerant circulates to dehumidify air.

[0019] At least one of the above-described plurality of cycle units may include an outdoor unit equipped with a compressor and an outdoor heat exchanger, and an air treatment device equipped with a heat exchanger fluidly connected to the outdoor unit to recover heat or perform cooling and dehumidification.

[0020] The above outdoor unit includes a plurality of outdoor units, and the plurality of outdoor units can be selectively operated in cooling mode or heating mode.

[0021] The air treatment device includes a flow path forming an air path, and the heat exchanger can be installed on the path of the flow path.

[0022] The above heat exchanger may include a heat exchange coil that is fluidly connected to the outdoor unit and acts as a cooling and dehumidifying coil capable of cooling and dehumidifying air flowing through the flow path through heat absorption.

[0023] The above cooling and dehumidifying coil can be installed in the first flow passage that introduces outside air and supplies it to the room.

[0024] The above cycle unit may further include a high-temperature extraction device for providing heat for regeneration of the dehumidifying rotor.

[0025] The second refrigerant circulating through the above high-temperature extraction device may be a different type of refrigerant from the first refrigerant circulating through the outdoor unit.

[0026] The above high temperature extraction device may include an intermediate compressor for compressing the second refrigerant.

[0027] A dehumidifying rotor for dehumidifying the air supplied to the room may be installed in the above-mentioned euro section.

[0028] The dehumidification area of ​​the dehumidification rotor is arranged in the first flow path, and the regeneration area of ​​the dehumidification rotor is installed in the second flow path, so that dehumidification and regeneration operation of the dehumidification rotor can be easily performed.

[0029] A first regeneration coil may be installed in the second section as a heat exchanger to which compressed refrigerant from the intermediate compressor is introduced to generate regeneration heat.

[0030] A regeneration heater for regeneration of the dehumidifying rotor may be installed in the second euro section.

[0031] In the second section, a heat recovery coil is arranged at the outlet of the regeneration side area of ​​the dehumidifying rotor to evaporate using the high-temperature waste heat exhausted after regeneration of the dehumidifying rotor, so that the operating efficiency of the high-temperature extraction device can be improved.

[0032] The above cycle section includes a second regeneration coil into which high-pressure refrigerant compressed by the compressor of the outdoor unit is introduced, thereby contributing to the temperature increase of the outside air introduced from the outside, which can be used as regeneration heat of the dehumidifying rotor.

[0033] The above second regeneration coil is installed in the second section and can be placed on the inlet side of the dehumidifying rotor.

[0034] The above air treatment device may include a first flow path in which a plurality of heat exchange coils and dehumidifying rotors as cooling dehumidifying coils for introducing outside air and dehumidifying the introduced outside air can be arranged in a set operation mode.

[0035] The above air treatment device may include a first flow path in which a heat exchange coil as a heating coil for introducing outside air and heating the introduced outside air may be arranged in a set operation mode.

[0036] The above air treatment device may include a second flow path that forms a flow path for introducing outside air and regenerating a dehumidifying rotor using the introduced outside air.

[0037] The air treatment device may include a bypass duct that connects the first flow path and the second flow path so that air flowing through one of the first and second flow paths can be bypassed to the other flow path to recover heat.

[0038] In one aspect of the present invention, an air conditioner may include a first outdoor unit including a first compressor and a first outdoor heat exchanger; a second outdoor unit including a second compressor and a second outdoor heat exchanger; an air treatment device having a passage section in which a heat exchanger fluidly connected to the first outdoor unit or the second outdoor unit and a dehumidifying rotor for dehumidifying air are installed; and a high-temperature extraction device having an intermediate compressor so that a cycle for providing regenerative heat to the dehumidifying rotor is driven.

[0039] The above-mentioned refrigerant passage may include a regeneration refrigerant passage forming an air passage for introducing and discharging outside air, and a first regeneration coil for condensing the compressed refrigerant in the intermediate compressor is arranged.

[0040] In the above regeneration duct section, a second regeneration coil may be arranged that is fluidly connected to the first outdoor unit and for heating the outside air introduced into the regeneration duct section.

[0041] The first regenerative coil may be positioned on the outlet side of the second regenerative coil based on the air path so as to secondarily heat up the air heated in the second regenerative coil.

[0042] In the above regeneration path section, a regeneration heater may be placed between the outlet side of the first regeneration coil and the inlet side of the dehumidifying rotor based on the air path to further heat up the air heated in the first regeneration coil.

[0043] In the above regeneration flow path, a heat recovery coil may be arranged on the outlet side of the first regeneration coil based on the air flow path to cool the air heated in the first regeneration coil.

[0044] The above heat recovery coil is characterized in that it is an evaporator into which refrigerant condensed in the first regeneration coil is introduced after being depressurized in the coil-side expansion valve.

[0045] The above-mentioned flow path further includes an air supply flow path for introducing outside air and supplying it indoors, and a dehumidification area of ​​the dehumidification rotor is arranged, and a regeneration area of ​​the dehumidification rotor can be arranged in the regeneration flow path.

[0046] In the above air supply passage section, a first heat exchange coil may be arranged to be fluidly connected to the first outdoor unit and to cool and dehumidify the outside air introduced into the above air supply passage section.

[0047] In the above air supply path section, a second heat exchange coil is disposed to be fluidly connected to the second outdoor unit and to cool and dehumidify the outside air introduced into the air supply path section, and the dehumidifying rotor may be disposed between the first heat exchange coil and the second heat exchange coil based on the air path of the air supply path section.

[0048] The liquid pipe may further include a liquid pipe connected to the first outdoor heat exchanger, and the liquid pipe may include a branch portion connected to the first regeneration coil.

[0049] The liquid pipe may further include a liquid pipe connected to the first outdoor heat exchanger and having a first coil expansion valve installed therein, and the liquid pipe may include a branch portion connected to the first regeneration coil.

[0050] The above-mentioned air passage section further includes a supply air passage section for introducing outside air and supplying it indoors, and a dehumidifying area of ​​the dehumidifying rotor is arranged. In the supply air passage section, a first heat exchange coil that is connected to the liquid pipe and evaporates refrigerant to cool and dehumidify the air can be arranged.

[0051] A liquid pipe connected to the second outdoor heat exchanger and having a second coil expansion valve installed therein; and a second heat exchange coil connected to the liquid pipe and evaporating refrigerant depressurized by the second coil expansion valve may be further included.

[0052] The above-mentioned air passage section further includes an air supply passage section for introducing outside air and supplying it indoors, and in which a dehumidifying area of ​​the dehumidifying rotor is arranged, and the second heat exchange coil can be arranged in the air supply passage section.

[0053] The first refrigerant circulates in the first outdoor unit and the second outdoor unit, and the second refrigerant, which forms a condensation temperature higher than the condensation temperature of the first refrigerant and an evaporation temperature higher than the evaporation temperature of the first refrigerant, circulates in the high-temperature extraction device.

[0054] In the first mode, the first outdoor unit may include a first flow control valve that branches and introduces the refrigerant compressed in the first compressor into the first outdoor heat exchanger and the first regeneration coil so that the first outdoor unit is operated in a cooling mode, and the second outdoor unit may include a second flow control valve that introduces the refrigerant compressed in the second compressor into the second outdoor heat exchanger so that the second outdoor unit is operated in a cooling mode.

[0055] In the second mode, the first outdoor unit may further include a first flow control valve that introduces the compressed refrigerant from the first compressor into the first regeneration coil so that the first outdoor unit is operated in a heating mode, and the second outdoor unit may further include a second flow control valve that introduces the compressed refrigerant from the second compressor into the second outdoor heat exchanger so that the second outdoor unit is operated in a cooling mode.

[0056] In the third mode, the first outdoor unit further includes a first flow control valve for introducing the refrigerant compressed in the first compressor into the first regeneration coil so that the first outdoor unit is operated in a heating mode, and the second outdoor unit can be stopped.

[0057] The above-mentioned flow path section may further include an air supply flow path section for introducing outside air and supplying it indoors, and in which a dehumidifying area of ​​the dehumidifying rotor is arranged, and in the fourth mode, the first outdoor unit may be stopped and the second outdoor unit may be operated in a heating mode, and may include a flow control valve for introducing refrigerant compressed in the second compressor into a second heat exchange coil arranged in the air supply flow path section.

[0058] According to an embodiment of the present invention, an air conditioning device having a plurality of cycle sections is provided, so that air can be dehumidified and easily supplied to an indoor space.

[0059] According to an embodiment of the present invention, a plurality of outdoor units are provided for driving the plurality of cycle units, and an air treatment device is included that is fluidly connected to the plurality of outdoor units and can treat air flowing within the duct section, so that the dehumidification performance can be improved.

[0060] According to an embodiment of the present invention, a heat recovery coil as a heat exchanger is provided to recover waste heat generated while operating a plurality of cycle units, thereby reducing the energy used for operating the device.

[0061] According to an embodiment of the present invention, a regeneration coil is provided as a heat exchanger for performing regeneration of a dehumidifying rotor by utilizing waste heat generated while operating a plurality of cycle units, so that energy used for operating the device can be reduced.

[0062] According to an embodiment of the present invention, a heat exchange coil as a cooling dehumidification coil for cooling and dehumidification is arranged in the air supply side passage section, thereby improving the dehumidification performance.

[0063] According to an embodiment of the present invention, since a plurality of cooling and dehumidifying coils are arranged, and some or all of the cooling and dehumidifying coils among the plurality of cooling and dehumidifying coils can be selectively operated depending on the operation mode, optimal operation control according to external conditions can be achieved.

[0064] According to an embodiment of the present invention, a first flow path (air supply flow path) is provided in which a plurality of cooling dehumidifying coils and dehumidifying rotors can be arranged to introduce outside air and dehumidify the introduced outside air, so that dehumidifying performance can be improved.

[0065] According to an embodiment of the present invention, a second flow path (regeneration flow path) is provided that forms a flow path for introducing external air and regenerating the dehumidifying rotor using the introduced external air, so that the operating performance of the dehumidifying rotor can be improved.

[0066] According to an embodiment of the present invention, air heat can be easily recovered by installing a bypass flow path between the first flow section and the second flow section and allowing air to bypass between the flow sections through the bypass flow path.

[0067] The present invention provides a high-temperature extraction device capable of raising the regeneration temperature of a dehumidifying rotor by circulating a refrigerant of a different type from the refrigerant circulating in the outdoor unit, thereby reducing the load of the regeneration heater.

[0068] Figure 1 is a cycle diagram showing the configuration of an air conditioning device according to an embodiment of the present invention.

[0069] Figure 2 is a cycle diagram showing the operation of the first mode of an air conditioning device according to an embodiment of the present invention.

[0070] Figure 3 is a cycle diagram showing the operation of the second mode of the air conditioning device according to an embodiment of the present invention.

[0071] Figure 4 is a cycle diagram showing the operation of the third mode of the air conditioning device according to an embodiment of the present invention.

[0072] Figure 5 is a cycle diagram showing the operation of the fourth mode of the air conditioning device according to an embodiment of the present invention.

[0073] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. When designating components in each drawing, it should be noted that, where possible, identical components will be given the same reference numerals, even if they appear in different drawings. Furthermore, when describing embodiments of the present invention, detailed descriptions of related known structures or functions will be omitted if they are deemed to hinder understanding of the embodiments of the present invention.

[0074] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of embodiments of the present invention. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms. When it is described that a component is "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but another component may also be "connected," "coupled," or "connected" between each component.

[0075] Figure 1 is a cycle diagram showing the configuration of an air conditioning device according to an embodiment of the present invention.

[0076] Referring to FIG. 1, an air conditioning device (1) according to an embodiment of the present invention may include a plurality of cycle sections (1a, 1b, 1c) forming a cycle in which a refrigerant circulates.

[0077] The above multiple cycle parts (1a, 1b, 1c) may include a first cycle part (1a), a second cycle part (1b), and a third cycle part (1c).

[0078] The first cycle section (1a) may include a first outdoor unit (10). The second cycle section (1b) may include a second outdoor unit (20). The third cycle section (1c) may include a high-temperature extraction device (100).

[0079] The above air conditioning device (1) may include an air treatment device (70) for dehumidifying air supplied indoors using the heat sources of the plurality of cycle units (1a, 1b, 1c). The air treatment device (70) may be called an air handling unit (AHU).

[0080] The air treatment device (70) may include a flow path (80, 95) that forms an air flow path. The flow path (80, 95) defines an air flow path formed inside the air treatment device (70), and a plurality of heat exchangers and dehumidifying rotors, etc. may be installed in the path of the flow path (80, 95).

[0081] The above-mentioned flow path may include a first flow path (80) that introduces outside air, dehumidifies the introduced outside air, and then supplies the air to the room. The first flow path (80) may be called a “supply air flow path.”

[0082] One end of the first flow path (80) may form a first outside air introduction portion (81) into which outside air is introduced. The other end of the first flow path (80) may form an indoor supply portion (82) that removes moisture contained in the outside air or processes the air to increase its temperature before supplying it indoors.

[0083] A first fan (83) may be installed in the first flow path (80) to generate air flow passing through the first flow path (80). For example, the first fan (83) may be installed adjacent to and inside the indoor supply section (82).

[0084] Inside the first section (80), a plurality of heat exchangers constituting at least one of the first to third cycle sections (1a, 1b, 1c) may be installed.

[0085] For example, the plurality of heat exchangers may include a first heat exchange coil (261) constituting the first cycle section (1a). The plurality of heat exchangers may include a second heat exchange coil (461) constituting the second cycle section (1b).

[0086] The above-mentioned flow path may include a second flow path (95) that introduces outside air, processes the introduced outside air, and then exhausts the outside air. The second flow path (95) may be called a “regeneration flow path.”

[0087] One end of the second flow path (95) may form a second outside air introduction portion (96) into which outside air is introduced. The other end of the third flow path (95) may form an exhaust portion (97) that performs regeneration of the dehumidifying rotor (160) using the introduced outside air and then exhausts the regenerated air to the outside.

[0088] A second fan (98) may be installed in the second flow path (95) to generate air flow passing through the second flow path (95). For example, the second fan (98) may be installed adjacent to and inside the exhaust part (97).

[0089] A heat exchanger constituting the third cycle section (1c) may be installed inside the second flow section (95). For example, the heat exchanger may include a first regeneration coil (140) and a heat recovery coil (170).

[0090] A heat exchanger constituting the first cycle section (1a) may be installed inside the second flow section (95). For example, the heat exchanger may include a second regeneration coil (141).

[0091] The third cycle section (1c) may include a high-temperature extraction device (100) for supplying regeneration heat to the air flowing through the second flow path (95). The high-temperature extraction device (100) may circulate a second refrigerant of a different type from the first refrigerant circulating through the second outdoor unit (20), and may supply high-pressure refrigerant to the first regeneration coil (140) to condense the refrigerant in the first regeneration coil (140). Accordingly, the temperature of the air passing through the first regeneration coil (140) may rise so as to regenerate the dehumidifying rotor.

[0092] Below, the detailed configuration of the first to third cycle sections (1a, 1b, 1c) is described with reference to the drawings.

[0093] A first cycle unit (1a) according to an embodiment of the present invention may include a first outdoor unit (10) through which refrigerant circulates. The first outdoor unit (10) may include a first compressor (210) for compressing the refrigerant to a high pressure. A first accumulator (205) may be installed on the suction side of the first compressor (210) to separate the gaseous refrigerant from the low-pressure refrigerant and guide it to the first compressor (210).

[0094] The above first outdoor unit (10) is installed on the outlet side of the first compressor (210) and may include a flow control valve (220, 222) that controls the flow direction of the high-temperature, high-pressure refrigerant discharged from the first compressor (210) and flows therein.

[0095] The above flow control valve (220, 222) may include a first valve (220) and a second valve (222). For example, the first and second valves (220, 222) may include a four-way valve.

[0096] The above first and second valves (220, 222) can be configured so that three of the four ports are open and connected to the refrigerant pipe, and the remaining one port is closed.

[0097] A discharge pipe (212) is connected to the outlet of the first compressor (210), and the discharge pipe (212) can be connected to a valve connection pipe (224) that connects the first valve (220) and the second valve (222).

[0098] In detail, the valve connection pipe (224) includes a joint portion (224a), and the discharge pipe (212) can be connected to the joint portion (224a). The refrigerant of the discharge pipe (212) flows into the valve connection pipe (224) through the joint portion (224a), and can be branched into the first and second valves (220, 222) and flowed into the second valve (222).

[0099] For example, when the first outdoor unit (10) is operated in cooling mode, some of the refrigerant flowing into the valve connection pipe (224) may flow into the first outdoor heat exchanger (230) through the first valve (220). The remaining refrigerant may flow into the second regeneration coil (141) through the second valve (222).

[0100] A first outdoor fan that blows air to the first outdoor heat exchanger (230) may be provided on one side of the first outdoor heat exchanger (230).

[0101] The above first outdoor unit (10) may include a heat exchanger connecting pipe (226) extending from the first valve (220) to the first outdoor heat exchanger (230).

[0102] The first outdoor unit (10) may include a high-pressure engine (227) connected to the second valve (222). High-pressure gaseous refrigerant flows through the high-pressure engine (227), and may extend to the outside of the first outdoor unit (10) and be connected to a second regeneration coil (141).

[0103] The first outdoor unit (10) may include a first outdoor heat exchanger (230). In the cooling mode of the first outdoor unit (10), the refrigerant compressed in the first compressor (210) may be condensed in the first outdoor heat exchanger (230). That is, the first outdoor heat exchanger (230) may function as a condenser.

[0104] On the other hand, in the heating mode of the first outdoor unit (10), the refrigerant introduced into the first outdoor unit (10) is depressurized in the outdoor expansion valve (234) and then introduced into the first outdoor heat exchanger (230), and can be evaporated while passing through the first outdoor heat exchanger (230). That is, the first outdoor heat exchanger (230) can function as an evaporator.

[0105] Based on the cooling mode of the first outdoor unit (10), a liquid pipe (235) may be connected to the outlet side of the first outdoor heat exchanger (230). Liquid refrigerant flows in the liquid pipe (235), and may extend to the outside of the first outdoor unit (10) and be connected to the first heat exchange coil (261).

[0106] An outdoor expansion valve (234) may be installed in the above liquid pipe (235). The outdoor expansion valve (234) may be configured as, for example, an electronic expansion valve (EEV) whose opening can be adjusted to reduce the pressure of the refrigerant.

[0107] The first outdoor unit (10) may include a low-pressure engine (264) connected to the inlet side of the first accumulator (205). A low-pressure gaseous refrigerant flows through the low-pressure engine (264), and may extend to the outside of the first outdoor unit (10) and be connected to the first heat exchange coil (261).

[0108] The first cycle section (1a) may include a first heat exchange coil (261) connected to the liquid pipe (235). The liquid pipe (235) may be connected to the first outdoor heat exchanger (230) to guide the refrigerant condensed in the first outdoor heat exchanger (230) to the first heat exchange coil (261).

[0109] The above first heat exchange coil (261) is installed in the first flow path (80) and operates in a specific mode (the first and second modes described later) to cool the outside air introduced from the first outside air introduction section (81) and remove moisture (functions as a cooling dehumidifying coil).

[0110] The above liquid pipe (235) forms a branch portion (235a), and a coil outlet pipe (146) provided on the outlet side of the second regeneration coil (141) can be connected to the branch portion (235a).

[0111] For example, in the first mode of operation, the refrigerant condensed in the second regeneration coil (141) may flow through the coil outlet pipe (146) and be combined with the refrigerant in the liquid pipe (235) through the branch portion (235a). The refrigerant combined in the branch portion (235a) may be introduced into the first heat exchange coil (261).

[0112] A first coil expansion valve (236) may be installed in the above liquid pipe (235). The first coil expansion valve (236) is provided on the inlet side of the first heat exchange coil (261) and can reduce the pressure of the refrigerant to be introduced into the first heat exchange coil (261).

[0113] The above first coil expansion valve (236) may be configured as an electronic expansion valve (EEV) whose opening can be adjusted, for example, to reduce the pressure of the refrigerant. The refrigerant reduced in pressure by the first coil expansion valve (236) may flow into the first heat exchange coil (261) and evaporate.

[0114] The first heat exchange coil (261) may be connected to a low pressure engine (264). Therefore, the refrigerant evaporated in the first heat exchange coil (261) may flow through the low pressure engine (264) and be introduced into the first outdoor unit (10).

[0115] In detail, the low pressure organ (264) may extend into the interior of the first outdoor unit (10) and be connected to the inlet side of the first accumulator (205). Among the low pressure refrigerants introduced into the first accumulator (205) from the low pressure organ (264), the gaseous refrigerant may be sucked into the first compressor (210).

[0116] In this way, in the first cycle section (1a), refrigerant circulation can be performed to drive the first heat exchange coil (261) to cool and dehumidify the air inside the first flow section (80).

[0117] A second cycle unit (1b) according to an embodiment of the present invention may include a second outdoor unit (20) through which refrigerant circulates. The second outdoor unit (20) may include a second compressor (410) for compressing the refrigerant to a high pressure. A second accumulator (405) may be installed on the suction side of the second compressor (410) to separate the gaseous refrigerant from the low-pressure refrigerant and guide it to the second compressor (410).

[0118] The second outdoor unit (20) is installed on the outlet side of the second compressor (210) and may include a flow control valve (420) that controls the flow direction of the high-temperature, high-pressure refrigerant discharged from the second compressor (410) and flows therein. For example, the flow control valve (420) may include a four-way valve.

[0119] For convenience of explanation, the flow control valve (220, 222) provided in the first outdoor unit (10) may be referred to as the “first flow control valve,” and the flow control valve (420) provided in the second outdoor unit (20) may be referred to as the “second flow control valve.”

[0120] A discharge pipe (412) is connected to the outlet of the second compressor (410), and the discharge pipe (412) can be connected to the flow control valve (420).

[0121] The above second outdoor unit (20) may include an organ (464) extending from the flow control valve (420) to the second heat exchange coil (461).

[0122] When the second outdoor unit (30) is operated in heating mode, high-pressure gaseous refrigerant compressed in the second compressor (410) can flow through the engine (464). The engine (464) can extend to the outside of the second outdoor unit (20) and be connected to the second heat exchange coil (461). That is, the engine (464) can function as a high-pressure engine.

[0123] On the other hand, when the second outdoor unit (20) is operated in cooling mode, low-pressure gaseous refrigerant evaporated in the second heat exchange coil (461) can flow through the engine (464). The engine (464) can extend to the second outdoor unit (30) and be connected to the inlet side of the third accumulator (405) via the flow control valve (420). That is, the engine (464) can function as a low-pressure engine.

[0124] The second outdoor unit (20) may include a heat exchanger connection pipe (426) extending from the flow control valve (420) to the second outdoor heat exchanger (430).

[0125] The second outdoor unit (20) may include a second outdoor heat exchanger (430). In the cooling mode of the second outdoor unit (20), the refrigerant compressed in the second compressor (410) may pass through the flow control valve (420) and be condensed in the second outdoor heat exchanger (430). That is, the second outdoor heat exchanger (430) may function as a condenser.

[0126] A third outdoor fan that blows air to the second outdoor heat exchanger (430) may be provided on one side of the second outdoor heat exchanger (430).

[0127] On the other hand, in the heating mode of the second outdoor unit (20), the refrigerant flowing into the second outdoor unit (30) from the second heat exchange coil (461) is depressurized in the outdoor expansion valve (434) and then flows into the second outdoor heat exchanger (430), and can be evaporated while passing through the second outdoor heat exchanger (430). That is, the second outdoor heat exchanger (430) can function as an evaporator.

[0128] Based on the cooling mode of the second outdoor unit (30), a liquid pipe (435) may be connected to the outlet side of the second outdoor heat exchanger (430). A liquid refrigerant flows in the liquid pipe (435), and may extend to the outside of the second outdoor unit (30) and be connected to the second heat exchange coil (461).

[0129] An outdoor expansion valve (434) may be installed in the above liquid pipe (435). The outdoor expansion valve (434) may be configured as an electronic expansion valve (EEV) whose opening can be adjusted for reducing the pressure of the refrigerant, for example.

[0130] The second cycle section (1b) may include a second heat exchange coil (461) connected to the liquid pipe (435). The second heat exchange coil (461) is installed in the first flow path section (80) and can cool the air dehumidified in the dehumidifying rotor (160) in the first mode of the air conditioning device (1) to remove moisture.

[0131] The above second heat exchange coil (461) can be placed on the outlet side of the dehumidifying rotor (160) within the first flow path (80).

[0132] On the inlet side of the second heat exchange coil (461), a second coil expansion valve (436) may be installed to reduce the pressure of the refrigerant to be introduced into the second heat exchange coil (461) based on the cooling mode. The second coil expansion valve (436) may be configured as an electronic expansion valve (EEV) whose opening can be adjusted, for example, to reduce the pressure of the refrigerant.

[0133] In the cooling mode of the second outdoor unit (20), the refrigerant depressurized in the second coil expansion valve (436) can be introduced into the second heat exchange coil (461) and evaporated.

[0134] The second heat exchange coil (461) may be connected to the engine (464). Therefore, the refrigerant evaporated in the second heat exchange coil (461) may flow through the engine (464) and be introduced into the second outdoor unit (20).

[0135] The above-mentioned organ (464) may extend into the interior of the second outdoor unit (20) and be connected to the inlet side of the second accumulator (405) via the flow control valve (420). Among the low-pressure refrigerant flowing into the second accumulator (405) from the organ (464), the gaseous refrigerant may be sucked into the second compressor (410).

[0136] On the other hand, in the heating mode of the second outdoor unit (20), a reverse cycle can be driven compared to the cooling mode of the second outdoor unit (20). That is, the refrigerant compressed in the second compressor (410) can be condensed in the second heat exchange coil (461). Accordingly, the air flowing in the first flow path (80) can be heated as it passes through the second heat exchange coil (461).

[0137] The refrigerant condensed in the second heat exchange coil (461) can be evaporated in the second outdoor heat exchanger (430) after being depressurized in the outdoor expansion valve (434). Then, the evaporated refrigerant can be introduced into the second accumulator (405) via the flow control valve (420). Among the low-pressure refrigerant introduced into the second accumulator (405) from the engine (464), the gaseous refrigerant can be sucked into the second compressor (410).

[0138] In this way, in the second cycle section (1b), refrigerant circulation can be performed to drive the second heat exchange coil (461) to cool, dehumidify, or heat (heat) the air inside the first flow section (80).

[0139] The above air treatment device (70) may include a bypass duct (86) connecting the first flow path (80) and the second flow path (95). A bypass fan (86a) may be installed in the bypass duct (86).

[0140] The above bypass duct (86) can bypass air from the inlet side of the second heat exchange coil (461) arranged in the first flow path (80) to the second flow path (95) based on the air flow.

[0141] When the bypass fan (86a) is driven in a specific mode of the air conditioning device, at least a portion of the air (relatively high temperature air) flowing through the first flow path (80) is bypassed to the second flow path (95), thereby helping to increase the temperature of the air in the second flow path (95).

[0142] The third cycle section (1c) may include a high-temperature extraction device (100) for providing heat to the regeneration area of ​​the dehumidifying rotor (160) located in the second flow section (95).

[0143] The above high temperature extraction device (100) may include an intermediate compressor (110) for compressing the second refrigerant. On the other hand, the first refrigerant may circulate in the first outdoor unit (10) of the first cycle section (1a) and the second outdoor unit (20) of the second cycle section (1b). That is, the first compressor (210) and the second compressor (410) may be configured as compressors for compressing the first refrigerant.

[0144] The first refrigerant and the second refrigerant may be composed of different refrigerants. For example, the first refrigerant may be R410A and the second refrigerant may be R134a.

[0145] The condensation temperature of the first refrigerant may be approximately 45°C, and the evaporation temperature may be approximately 6°C. On the other hand, the condensation temperature of the second refrigerant may be approximately 80°C, and the evaporation temperature may be approximately 40°C.

[0146] Due to the characteristics of the refrigerant, the first refrigerant may have high density and high efficiency. Therefore, by using the first refrigerant as the refrigerant flowing through the first to third outdoor units (10, 20, 30), a compact configuration of the outdoor units is possible, while improving cycle performance.

[0147] The second refrigerant, although relatively low in efficiency, has a high saturation temperature at the same pressure, thereby helping to provide regenerative heat to the dehumidifying rotor. Therefore, the second refrigerant can be used as the refrigerant circulating in the high-temperature extraction device (100).

[0148] A discharge pipe (112) extending to the first regeneration coil (140) is installed on the outlet side of the above intermediate compressor (110).

[0149] A check valve (113) may be installed in the discharge pipe (112) to prevent reverse flow of refrigerant. The check valve (113) may be configured to secure the reliability of the compressor by blocking the liquid refrigerant from flowing back from the first regeneration coil (140) into the intermediate compressor (110) when the intermediate compressor (110) is stopped.

[0150] The second refrigerant compressed in the intermediate compressor (110) may be introduced into the first regeneration coil (140) through the discharge pipe (112). The first regeneration coil (140) may be understood as a heat exchanger installed in the second flow path (95) and providing regeneration heat of the dehumidifying rotor (160).

[0151] During the process of the second refrigerant condensing in the first regeneration coil (140), heat is dissipated, and the air flowing through the second flow path (95) can be heated and raised in temperature.

[0152] A coil outlet pipe (142) may be connected to the outlet side of the first regeneration coil (140). The liquid refrigerant condensed in the first regeneration coil (140) may flow through the coil outlet pipe (142).

[0153] The outlet end of the above coil outlet pipe (142) can be connected to a heat recovery coil (170). Accordingly, the liquid refrigerant condensed in the first regeneration coil (140) can be introduced into the heat recovery coil (170) through the coil outlet pipe (142).

[0154] A coil-side expansion valve (144) may be installed in the coil outlet pipe (142). The refrigerant flowing in the coil outlet pipe (142) may be reduced to a low pressure in the coil-side expansion valve (144) and introduced into the heat recovery coil (170).

[0155] The above coil-side expansion valve (144) may be configured as an electronic expansion valve (EEV) whose opening can be adjusted to reduce the pressure of the refrigerant. The coil-side expansion valve (144) may be provided at the inlet side of the heat recovery coil (170).

[0156] The above heat recovery coil (170) may be installed in the second flow path (95). For example, the heat recovery coil (170) may be placed on the outlet side of the dehumidifying rotor (160) based on the air flow.

[0157] The above second refrigerant is evaporated in the heat recovery coil (170), and during the evaporation process, the temperature of the air flowing through the second flow path (95) can decrease.

[0158] In this way, by arranging a heat recovery coil (170) inside the second flow path (95) and using the waste heat of indoor air exhausted through the second flow path (95) to evaporate the refrigerant of the heat recovery coil (170), the operating performance of the cycle can be improved.

[0159] A coil-side low-pressure pipe (172) is connected to the outlet side of the heat recovery coil (170), and the refrigerant evaporated in the heat recovery coil (170) can be introduced into the intermediate accumulator (105) through the coil-side low-pressure pipe (172) and sucked into the intermediate compressor (110). The intermediate accumulator (105) can be placed on the suction side of the intermediate compressor (110).

[0160] Among the refrigerant introduced into the intermediate accumulator (105), the gaseous refrigerant is separated, and the separated gaseous refrigerant can be sucked into the intermediate compressor (110).

[0161] The above air conditioner (1) may further include a dehumidifying rotor (160) provided to dehumidify air flowing through the first flow path (80).

[0162] The above dehumidifying rotor (160) may include a dehumidifying area (dehumidifying part) arranged in the first flow path (80) and a regeneration area (regeneration part) arranged in the second flow path (95).

[0163] For example, the dehumidifying rotor (160) is provided to be rotatable around a central axis, and the positions of the dehumidifying region and the regeneration region can be switched. For example, a motor and a belt are included as a mechanism for driving the dehumidifying rotor (160), and the belt is connected to the central axis of the dehumidifying rotor to rotate the dehumidifying rotor (160).

[0164] When moisture is filtered in the dehumidification area located in the first flow path (80) for a predetermined period of time, the dehumidification rotor (160) rotates, and the dehumidification area is located in the second flow path (95) so that regeneration can take place. In addition, the regeneration area located in the second flow path (95) can be located in the first flow path (80) so that dehumidification can be performed.

[0165] A regeneration heater (150) for regeneration of the dehumidifying rotor (160) may be installed in the second flow path (95). The regeneration heater (150) may be configured to supply regeneration heat to the dehumidifying rotor (160). For example, the regeneration heater (150) may be placed on the inlet side of the dehumidifying rotor (160) based on the air flow.

[0166] A first regeneration coil (140) may be installed on the inlet side of the above-mentioned regeneration heater (150). Accordingly, the air flowing through the second flow path (95) is first heated while passing through the first regeneration coil (140) and is additionally heated in the regeneration heater (150) to regenerate the regeneration area of ​​the dehumidifying rotor (160).

[0167] And, the heat recovery coil (170) is placed on the outlet side of the dehumidifying rotor (160), and the refrigerant of the heat recovery coil (170) can be evaporated using the air that has passed through the dehumidifying rotor (160).

[0168] Figure 2 is a cycle diagram showing the operation of the first mode of an air conditioning device according to an embodiment of the present invention.

[0169] Referring to FIG. 2, the air conditioning device (1) according to an embodiment of the present invention can be operated in a first mode. The first mode can be understood as a mode in which the device operates under conditions in which the outside temperature is relatively high. For example, the first mode can be operated in the summer or inter-seasonal period when the outside temperature is approximately 10°C or higher, and the first mode can be referred to as a "summer mode."

[0170] In the above first mode, the first outdoor unit (10) of the first cycle unit (1a) and the second outdoor unit (20) of the second cycle unit (1b) can be operated in cooling mode.

[0171] First, in the first cycle section (1a), when the first compressor (210) of the first outdoor unit (10) is driven, at least a portion of the refrigerant compressed in the first compressor (210) flows into the first outdoor heat exchanger (230) through the first valve (220), and the refrigerant condensed in the first outdoor heat exchanger (230) can flow into the first heat exchange coil (261) through the liquid pipe (235).

[0172] The refrigerant in the above liquid pipe (235) is depressurized in the first coil expansion valve (236) provided on the inlet side of the first heat exchange coil (261), and the depressurized refrigerant can be evaporated in the first heat exchange coil (261).

[0173] The refrigerant evaporated in the first heat exchange coil (261) flows through the low pressure engine (264), flows into the first outdoor unit (10), passes through the first accumulator (205), and can then be sucked into the first compressor (210).

[0174] Meanwhile, another portion of the refrigerant compressed in the first compressor (210) may flow through the high-pressure engine (227) via the second valve (222) and may be introduced into the second regeneration coil (141) arranged in the second flow path (95). The refrigerant is condensed in the second regeneration coil (141), and the condensed refrigerant may flow through the coil outlet pipe (146) and be combined with the liquid pipe (235) via the branch portion (235a).

[0175] The refrigerant combined in the above liquid pipe (235) is depressurized in the first coil expansion valve (236) as described above, evaporates in the first heat exchange coil (261), flows to the first outdoor unit (10), passes through the first accumulator (205), and can be sucked into the first compressor (210).

[0176] According to this action, the amount of heat generated during cooling and dehumidification in the first heat exchange coil (261) is reused for condensation in the second regeneration coil (141), so that the regeneration temperature of the dehumidification rotor (160) can be initially increased, and the amount of use of the regeneration heater (150) can be reduced, thereby reducing energy consumption. This has the advantage of reducing the amount of heat generated in the first heat exchange coil (261) and dehumidifying the second regeneration coil (141).

[0177] Next, in the second cycle section (1b), the second outdoor unit (20) can be operated in cooling mode.

[0178] When the second compressor (410) of the second outdoor unit (20) is driven, the refrigerant compressed in the second compressor (410) flows into the second outdoor heat exchanger (430) through the flow control valve (420), and the refrigerant condensed in the second outdoor heat exchanger (430) flows into the second heat exchange coil (461) through the liquid pipe (435).

[0179] The above condensed refrigerant is depressurized in the second coil expansion valve (436) provided on the inlet side of the second heat exchange coil (461) and then flows into the second heat exchange coil (461) to evaporate.

[0180] The refrigerant evaporated in the second heat exchange coil (461) flows through the engine (464) and flows into the second outdoor unit (20), passes through the flow control valve (420) and the second accumulator (405), and can then be sucked into the second compressor (410).

[0181] According to this action, the air dehumidified in the dehumidifying rotor (160) can be further dehumidified while passing through the second heat exchange coil (461), so that the dehumidifying performance can be improved.

[0182] Meanwhile, when the bypass fan (86a) is driven, at least a portion of the low-humidity air flowing through the first flow path (80) can flow into the second flow path (90) through the bypass duct (86) and into the second regeneration coil (141).

[0183] Next, the high-temperature extraction device (100) constituting the third cycle section (1c) can be operated. In detail, the second refrigerant compressed in the intermediate compressor (110) of the high-temperature extraction device (100) flows through the discharge pipe (112) and flows through the check valve (113) into the first regeneration coil (140) to be condensed.

[0184] The air in the second passage (95) passing through the first regeneration coil (140) can be heated and used as regeneration heat for the dehumidifying rotor (160). That is, the air that has been heated for the first time while passing through the second regeneration coil (141) can be heated for the second time while passing through the first regeneration coil (140).

[0185] The second refrigerant condensed in the first regeneration coil (140) flows through the coil outlet pipe (142), and after being depressurized in the coil-side expansion valve (144), can be introduced into the heat recovery coil (170).

[0186] Based on the air flow in the second flow path (95), the heat recovery coil (170) is placed on the outlet side of the dehumidifying rotor (160), so that heat exchange can occur between the air used for regeneration in the dehumidifying rotor (160) and the second refrigerant in the heat recovery coil (170). Through the heat exchange, the second refrigerant can be evaporated.

[0187] The above-mentioned evaporated second refrigerant can pass through the intermediate accumulator (105) via the coil-side low-pressure pipe (172) and be sucked into the intermediate compressor (110).

[0188] According to this operation, heat recovery is performed in the heat recovery coil (170) using the air exhausted after regeneration of the dehumidifying rotor (160), and the amount of use of the regeneration heater (150) can be reduced by recycling the air to increase the temperature through the first regeneration coil (140).

[0189] The dehumidification area of ​​the dehumidification rotor (160) may be arranged in the first flow path (80) and on the outlet side of the first heat exchange coil (261). Accordingly, the air cooled and dehumidified in the first heat exchange coil (261) may be further dehumidified as it passes through the dehumidification area of ​​the dehumidification rotor (160).

[0190] The regeneration area of ​​the dehumidifying rotor (160) is arranged in the second flow path (90) and can be regenerated by air flowing through the second flow path (95). A regeneration heater (150) is installed at the inlet side of the dehumidifying rotor (160) to heat the air, and the heated air can be used for regeneration by acting on the regeneration area of ​​the dehumidifying rotor (160).

[0191] Based on the air flow, the regenerative heater (150) is placed between the first regenerative coil (140) and the dehumidifying rotor (160), and the air that has been first heated in the first regenerative coil (140) can be secondarily heated while passing through the regenerative heater (150). By this configuration, the regeneration efficiency can be improved.

[0192] Describes air flow.

[0193] The outside air introduced from the first outside air introduction section (81) of the first flow path (80) is cooled and dehumidified as it passes through the first heat exchange coil (261), and can be additionally dehumidified for the first time as it passes through the dehumidification area of ​​the dehumidification rotor (160). In addition, the air can be additionally cooled and dehumidified for the second time as it passes through the second heat exchange coil (461). The additionally cooled and dehumidified air can be supplied to the room through the indoor supply section (82) via the first fan (83).

[0194] The outside air introduced from the second outside air introduction section (96) of the second flow path (95) may be heated for the first time while passing through the second regeneration coil (141) and heated for the second time while passing through the first regeneration coil (140). The air heated for the second time may be heated for the third time while passing through the regeneration heater (150) and regenerated while passing through the regeneration area of ​​the dehumidifying rotor (160).

[0195] The air that has undergone the above regeneration is cooled as it passes through the heat recovery coil (170), passes through the third fan (98), and can then be discharged to the outside through the exhaust port (97).

[0196] Figure 3 is a cycle diagram showing the operation of the second mode of the air conditioning device according to an embodiment of the present invention.

[0197] Referring to FIG. 3, the air conditioning device (10) according to an embodiment of the present invention can be operated in a second mode. The second mode can be understood as a mode in which the device operates under conditions in which the outside temperature and humidity are relatively low. For example, the second mode can be operated in winter when the outside temperature is in the range of approximately 4 to 10°C, and the second mode can be referred to as a "general winter mode."

[0198] First, in the second mode, the first cycle section (1a) can be operated in heating mode.

[0199] In detail, when the first compressor (210) of the first outdoor unit (10) is driven, the refrigerant compressed in the first compressor (210) can flow through the high-pressure engine (227) via the second valve (222) and be introduced into the second regeneration coil (141). The refrigerant is condensed in the second regeneration coil (141), and the condensed refrigerant can flow through the coil outlet pipe (146).

[0200] Some of the refrigerant in the coil outlet pipe (146) may be branched off at the branch section (235a) and flow into the first heat exchange coil (261). At this time, the refrigerant may be depressurized at the first coil expansion valve (236) and then flow into the first heat exchange coil (261) to evaporate.

[0201] The refrigerant evaporated in the first heat exchange coil (261) can flow to the first outdoor unit (10), pass through the first accumulator (205), and be sucked into the first compressor (210).

[0202] The remaining refrigerant in the above coil outlet pipe (146) can be branched off at the branch section (235a) and flow into the first outdoor heat exchanger (230). At this time, the refrigerant can be depressurized at the outdoor expansion valve (234) and then flow into the first outdoor heat exchanger (230) to evaporate.

[0203] The refrigerant evaporated in the first outdoor heat exchanger (230) can pass through the first valve (220) and the first accumulator (205) and be sucked into the first compressor (210).

[0204] According to this configuration, the evaporation heat generated during cooling and dehumidification in the first heat exchange coil (261) and the evaporation heat in the first outdoor heat exchanger (230) can be reused to increase the regeneration temperature of the dehumidification rotor (160), thereby reducing the electricity usage of the regeneration heater (150).

[0205] Next, in the second cycle section (1b), the second outdoor unit (20) can be operated in cooling mode. The operation of the second cycle section (1b) in the second mode is similar to the operation of the second cycle section (1b) in the first mode.

[0206] In detail, when the second compressor (410) of the second outdoor unit (20) is driven, the refrigerant compressed in the second compressor (410) flows into the second outdoor heat exchanger (230) through the flow control valve (420), and the refrigerant condensed in the second outdoor heat exchanger (430) flows into the second heat exchange coil (461) through the liquid pipe (435).

[0207] The above condensed refrigerant is depressurized in the second coil expansion valve (436) provided on the inlet side of the second heat exchange coil (461) and then flows into the second heat exchange coil (461) to evaporate.

[0208] The refrigerant evaporated in the second heat exchange coil (461) flows through the engine (464) and flows into the second outdoor unit (20), passes through the flow control valve (420) and the second accumulator (405), and can then be sucked into the second compressor (410).

[0209] Meanwhile, when the bypass fan (86a) is driven, at least a portion of the low-humidity air flowing through the first flow path (80) can flow into the second flow path (90) through the bypass duct (86) and into the second regeneration coil (141).

[0210] Next, the high-temperature extraction device (100) constituting the third cycle section (1c) can be operated. The operation of the third cycle section (1c) in the second mode is similar to the operation of the third cycle section (1c) in the first mode.

[0211] In detail, the second refrigerant compressed in the intermediate compressor (110) of the high-temperature extraction device (100) flows through the discharge pipe (112) and passes through the check valve (113) to the first regeneration coil (140) where it can be condensed.

[0212] The air in the second passage (95) passing through the first regeneration coil (140) can be heated and used as regeneration heat for the dehumidifying rotor (160).

[0213] The second refrigerant condensed in the first regeneration coil (140) flows through the coil outlet pipe (142), is depressurized in the coil-side expansion valve (144), and then flows into the heat recovery coil (170) to evaporate.

[0214] The above-mentioned evaporated second refrigerant can pass through the intermediate accumulator (105) via the coil-side low-pressure pipe (172) and be sucked into the intermediate compressor (110).

[0215] According to this operation, heat recovery is performed in the heat recovery coil (170) using the air exhausted after regeneration of the dehumidifying rotor (160), and the amount of use of the regeneration heater (150) can be reduced by recycling the air to increase the temperature through the first regeneration coil (140).

[0216] Describes air flow.

[0217] The outside air introduced from the first outside air introduction section (81) of the first flow path (80) is cooled and dehumidified as it passes through the first heat exchange coil (261), and can be additionally dehumidified for the first time as it passes through the dehumidification area of ​​the dehumidification rotor (160). In addition, the air can be additionally cooled and dehumidified for the second time as it passes through the second heat exchange coil (461). The additionally cooled and dehumidified air can be supplied to the room through the indoor supply section (82) via the first fan (83).

[0218] The outside air introduced from the second outside air introduction section (96) of the second flow path (95) may be heated for the first time while passing through the second regeneration coil (141) and heated for the second time while passing through the first regeneration coil (140). The air heated for the second time may be heated for the third time while passing through the regeneration heater (150) and regenerated while passing through the regeneration area of ​​the dehumidifying rotor (160).

[0219] The air that has undergone the above regeneration is cooled as it passes through the heat recovery coil (170), passes through the third fan (98), and can then be discharged to the outside through the exhaust port (97).

[0220] Figure 4 is a cycle diagram showing the operation of the third mode of the air conditioning device according to an embodiment of the present invention.

[0221] Referring to FIG. 4, the air conditioning device (10) according to an embodiment of the present invention can be operated in a third mode. The third mode can be understood as a mode that operates under conditions of low outdoor temperature and humidity. For example, the third mode can be operated during low-temperature winter when the outdoor temperature is approximately -8°C or higher and below 4°C, and the third mode can be referred to as a "low-temperature winter mode."

[0222] In the low-temperature winter season mentioned above, the outside temperature is low, but the humidity is relatively not high, so the dehumidification load may not be large.

[0223] In the third mode, the first outdoor unit (10) of the first cycle unit (1a) performs a heating mode, and the second outdoor unit (20) of the second cycle unit (1b) can be stopped.

[0224] First, in the third mode, the first outdoor unit (10) of the first cycle section (1a) can perform heating operation.

[0225] In detail, when the first compressor (210) of the first outdoor unit (10) is driven, the refrigerant compressed in the first compressor (210) can flow through the high-pressure engine (227) via the second valve (222) and be introduced into the second regeneration coil (141). The refrigerant is condensed in the second regeneration coil (141), and the condensed refrigerant can flow through the coil outlet pipe (146).

[0226] The refrigerant in the above coil outlet pipe (146) flows into the liquid pipe from the branch section (235a) and can flow into the first outdoor heat exchanger (230). At this time, the refrigerant is depressurized in the outdoor expansion valve (234) and then flows into the first outdoor heat exchanger (230) and can evaporate.

[0227] The refrigerant evaporated in the first outdoor heat exchanger (230) can pass through the first valve (220) and the first accumulator (205) and be sucked into the first compressor (210).

[0228] Meanwhile, since the first coil expansion valve (236) is closed, the refrigerant may be restricted from flowing into the first heat exchange coil (261) from the branch section (235a). Accordingly, refrigerant evaporation in the first heat exchange coil (261) and cooling and dehumidification of the air flowing through the first flow path (80) do not occur.

[0229] However, since the dehumidification load of the outside air is not large in the low-temperature winter season, even if the first heat exchange coil (261) is stopped, the dehumidification efficiency of the air conditioner (1) is not significantly affected and the cycle performance can be improved.

[0230] Next, in the second cycle section (1b), the second outdoor unit (20) can be stopped. Accordingly, the operation of the second compressor (410) is stopped, and no refrigerant flow occurs in the second cycle section (1b).

[0231] The above second coil expansion valve (436) is closed, and refrigerant evaporation in the second heat exchange coil (461) may not occur. Accordingly, the cooling and dehumidifying action of the air passing through the second heat exchange coil (461) may not occur.

[0232] Next, the high-temperature extraction device (100) constituting the third cycle section (1c) can be operated. The operation of the third cycle section (1c) in the third mode is similar to the operation of the third cycle section (1c) in the first mode.

[0233] In detail, the second refrigerant compressed in the intermediate compressor (110) of the high-temperature extraction device (100) flows through the discharge pipe (112) and passes through the check valve (113) to the first regeneration coil (140) where it can be condensed.

[0234] The air in the second passage (95) passing through the first regeneration coil (140) can be heated and used as regeneration heat for the dehumidifying rotor (160).

[0235] The second refrigerant condensed in the first regeneration coil (140) flows through the coil outlet pipe (142), is depressurized in the coil-side expansion valve (144), and then flows into the heat recovery coil (170) to evaporate.

[0236] The above-mentioned evaporated second refrigerant can pass through the intermediate accumulator (105) via the coil-side low-pressure pipe (172) and be sucked into the intermediate compressor (110).

[0237] According to this operation, heat recovery is performed in the heat recovery coil (170) using the air exhausted after regeneration of the dehumidifying rotor (160), and the amount of use of the regeneration heater (150) can be reduced by recycling the air to increase the temperature through the first regeneration coil (140).

[0238] Describes air flow.

[0239] The outside air introduced from the first outside air introduction section (81) of the first flow section (80) is dehumidified while passing through the dehumidification area of ​​the dehumidification rotor (160), and can be supplied indoors through the first fan (83) and the indoor supply section (82).

[0240] Since the first heat exchange coil (261) and the second heat exchange coil (461) are stopped, the air may not be cooled or dehumidified while passing through the first and second heat exchange coils (261, 461).

[0241] The outside air introduced from the second outside air introduction section (96) of the second flow path (95) may be heated for the first time while passing through the second regeneration coil (141) and heated for the second time while passing through the first regeneration coil (140). The air heated for the second time may be heated for the third time while passing through the regeneration heater (150) and regenerated while passing through the regeneration area of ​​the dehumidifying rotor (160).

[0242] The air that has undergone the above regeneration is cooled as it passes through the heat recovery coil (170), passes through the third fan (98), and can then be discharged to the outside through the exhaust port (97).

[0243] Figure 5 is a cycle diagram showing the operation of the fourth mode of the air conditioning device according to an embodiment of the present invention.

[0244] Referring to FIG. 5, the air conditioning device (10) according to an embodiment of the present invention can be operated in a fourth mode. The fourth mode can be understood as a mode in which the device is operated under conditions where the outside temperature is very low and the humidity is also low. For example, the fourth mode can be operated in a temperature range where the outside temperature is below approximately -8°C, and the fourth mode can be referred to as an "ultra-low temperature winter mode."

[0245] In the above fourth mode, since it is a low humidity condition, the dehumidification load is not large and operation for heating can be performed.

[0246] In the fourth mode, the first outdoor unit (10) of the first cycle unit (1a) stops, and the second outdoor unit (20) of the second cycle unit (1b) can perform a heating mode.

[0247] First, since the first outdoor unit (10) of the first cycle section (1a) is stopped, the first compressor (210) does not operate, and no refrigerant flows to the second regeneration coil (141) and the first heat exchange coil (261).

[0248] Next, the second outdoor unit (20) of the second cycle section (1b) can perform a heating mode. In detail, when the second compressor (410) is driven, the refrigerant compressed in the second compressor (410) passes through the flow control valve (420) and is condensed in the second heat exchange coil (461), and can be introduced into the second outdoor heat exchanger (430) through the liquid pipe (435).

[0249] The refrigerant is depressurized in the outdoor expansion valve (434) before flowing into the second outdoor heat exchanger (430), and the depressurized refrigerant can be evaporated in the second outdoor heat exchanger (430). The evaporated refrigerant can be introduced into the second accumulator (405) through the flow control valve (420) and sucked into the second compressor (410).

[0250] Next, the high-temperature extraction device (100) of the third cycle section (1c) may also be stopped. The intermediate compressor (110) does not operate, and the flow of the second refrigerant circulating through the first regeneration coil (140) and the heat recovery coil (170) does not occur.

[0251] The operation of the above-mentioned regenerative heater (150) also stops, and the operation of the second fan (98) also stops, so that air flow in the second flow path (95) may not occur. Accordingly, the dehumidifying action in the dehumidifying area of ​​the dehumidifying rotor (160) and the regenerative action in the regeneration area may not occur.

[0252] Describes air flow.

[0253] The outside air introduced from the first outside air introduction section (81) of the first flow section (80) may not be cooled or dehumidified as it passes through the stopped dehumidifying rotor (160) and the first heat exchange coil (261).

[0254] The air is heated as it passes through the second heat exchange coil (461), and the heated air can be supplied to the indoor space from the indoor supply unit (82) via the first fan (83). Therefore, heating of the indoor space can be performed.

[0255] Since the second fan (98) is stopped, air flow in the second flow path (95) may not occur.

[0256] The present invention relates to an air conditioning device, and provides an air conditioning device having a plurality of cycle sections, thereby enabling the device to dehumidify air and easily supply it to an indoor space. Therefore, the present invention has significant industrial applicability.

Claims

1. A first outdoor unit including a first compressor and a first outdoor heat exchanger; A second outdoor unit including a second compressor and a second outdoor heat exchanger; An air treatment device having a passage section in which a dehumidifying rotor for dehumidifying air using a heat source of the first outdoor unit or the second outdoor unit is installed; and A high temperature extraction device having an intermediate compressor is included so that a cycle for providing regenerative heat to the above dehumidifying rotor is driven, The above Euro part, An air conditioning device comprising a regeneration duct section in which an air duct is formed for introducing and discharging outside air, and a first regeneration coil for condensing refrigerant compressed in the intermediate compressor is arranged.

2. In paragraph 1, In the above playback euro section, An air conditioning device having a second regeneration coil fluidly connected to the first outdoor unit and configured to heat the outside air introduced into the regeneration duct.

3. In paragraph 2, An air conditioning device in which the first regenerative coil is positioned on the outlet side of the second regenerative coil based on the air path so as to secondarily heat up the air heated by the second regenerative coil.

4. In paragraph 1, In the above playback euro section, An air conditioning device in which a regenerative heater is arranged between the outlet side of the first regenerative coil and the inlet side of the dehumidifying rotor based on the air path to further heat up the air heated in the first regenerative coil.

5. In paragraph 1, In the above playback euro section, An air conditioning device in which a heat recovery coil is arranged on the outlet side of the first regeneration coil based on the air path to cool the air heated in the first regeneration coil.

6. In paragraph 5, The above heat recovery coil, An air conditioning device characterized in that the evaporator is an evaporator into which refrigerant condensed in the first regeneration coil is introduced after being depressurized in the coil-side expansion valve.

7. In paragraph 1, The above-mentioned euro section further includes an air supply passage section for introducing outside air and supplying it indoors, and in which the dehumidification area of ​​the dehumidification rotor is arranged. An air conditioning device in which the regeneration area of ​​the dehumidifying rotor is arranged in the above-mentioned regeneration vortex section.

8. In paragraph 7, In the above-mentioned air supply section, An air conditioning device having a first heat exchange coil fluidly connected to the first outdoor unit and configured to cool and dehumidify the outdoor air introduced into the supply air passage.

9. In paragraph 8, In the above-mentioned air supply section, A second heat exchange coil is disposed to be fluidly connected to the second outdoor unit and to cool and dehumidify the outside air introduced into the supply air passage section. An air conditioning device in which the dehumidifying rotor is positioned between the first heat exchange coil and the second heat exchange coil based on the air flow path of the above-mentioned supply air flow path.

10. In paragraph 1, An air conditioning device further comprising a liquid pipe connected to the first outdoor heat exchanger, wherein the liquid pipe includes a branch portion connected to the first regeneration coil.

11. In paragraph 1, An air conditioning device further comprising a liquid pipe connected to the first outdoor heat exchanger and having a first coil expansion valve installed therein, wherein the liquid pipe includes a branch portion connected to the first regeneration coil.

12. In paragraph 11, The above-mentioned euro section further includes an air supply passage section for introducing outside air and supplying it indoors, and in which the dehumidification area of ​​the dehumidification rotor is arranged. An air conditioning device in which a first heat exchange coil is disposed in the above-mentioned air supply section and is connected to the liquid pipe and evaporates refrigerant to cool and dehumidify the air.

13. In paragraph 1, A liquid pipe connected to the second outdoor heat exchanger and having a second coil expansion valve installed therein; and An air conditioner further comprising a second heat exchange coil connected to the liquid pipe and evaporating the refrigerant depressurized by the second coil expansion valve.

14. In paragraph 13, The above-mentioned euro section further includes an air supply passage section for introducing outside air and supplying it indoors, and in which the dehumidification area of ​​the dehumidification rotor is arranged. An air conditioning device in which the second heat exchange coil is disposed in the supply air passage section.

15. In paragraph 1, The first refrigerant circulates in the first outdoor unit and the second outdoor unit, An air conditioning device characterized in that a second refrigerant circulates in the high-temperature extraction device, the second refrigerant forming a condensation temperature higher than the condensation temperature of the first refrigerant and forming an evaporation temperature higher than the evaporation temperature of the first refrigerant.

16. In paragraph 1, In mode 1, The first outdoor unit includes a first flow control valve that branches and introduces the compressed refrigerant from the first compressor into the first outdoor heat exchanger and the first regeneration coil so that the first outdoor unit is operated in cooling mode. An air conditioning device including a second flow control valve that introduces refrigerant compressed in the second compressor into the second outdoor heat exchanger so that the second outdoor unit is operated in cooling mode.

17. In paragraph 1, In the second mode, The first outdoor unit further includes a first flow control valve that introduces the compressed refrigerant from the first compressor into the first regeneration coil so that the first outdoor unit is operated in heating mode. An air conditioning device including a second flow control valve that introduces refrigerant compressed in the second compressor into the second outdoor heat exchanger so that the second outdoor unit is operated in cooling mode.

18. In paragraph 1, In the third mode, The first outdoor unit further includes a first flow control valve that introduces the compressed refrigerant from the first compressor into the first regeneration coil so that the first outdoor unit is operated in heating mode. The above second outdoor unit is an air conditioning unit that is stopped.

19. In paragraph 1, The above-mentioned euro section further includes an air supply passage section for introducing outside air and supplying it indoors, and in which the dehumidification area of ​​the dehumidification rotor is arranged. In the 4th mode, The above first outdoor unit is stopped, An air conditioning device including a flow control valve that introduces refrigerant compressed in the second compressor into the second heat exchange coil disposed in the supply air passage section so that the second outdoor unit is operated in heating mode.

20. A first outdoor unit including a first compressor; A second outdoor unit including a second compressor; An air treatment device having a passage section in which a dehumidifying rotor for dehumidifying air using a heat source of the first outdoor unit or the second outdoor unit is installed; and A high temperature extraction device having an intermediate compressor is included so that a cycle for providing regenerative heat to the above dehumidifying rotor is driven, The above Euro part, An air conditioning device comprising a regeneration path section in which a first regeneration coil fluidly connected to the high-temperature exhaust device and a second regeneration coil fluidly connected to the first outdoor unit are arranged, forming an air path for introducing and discharging outside air.

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