WO2021149867A1

WO2021149867A1 - Dual air conditioning device using phase change material

Info

Publication number: WO2021149867A1
Application number: PCT/KR2020/003691
Authority: WO
Inventors: 김광욱
Original assignee: 주식회사 에어라클
Priority date: 2020-01-23
Filing date: 2020-03-18
Publication date: 2021-07-29
Also published as: KR102101326B1; KR20210095525A

Abstract

The present invention relates to a dual air conditioning system using a phase change material and, more specifically, to a dual air conditioning device using a phase change material, the device using a phase change material so as to maintain, at a low temperature, the temperature of a coolant for cooling indoor air, and performing air purification, dehumidification and cooling with high efficiency in one device.

Description

Dual air conditioner using phase change material

The present invention relates to a dual air conditioner system using a phase change material, and more particularly, to maintain the temperature of cooling water at a low temperature in order to cool indoor air using a phase change material, air purification, dehumidification, It relates to a dual air conditioner device using a phase change material capable of performing cooling with high efficiency in one device.

In general, in indoor spaces sealed from the outside, such as buildings or vehicles, it is intended to create a cool indoor environment by lowering the indoor temperature in hot weather. A cooling system is installed and used.

Recently, mechanical compression cooling systems using freon gas along with chlorofluorocarbon (CFC) refrigerants have been used for reasons of price and efficiency as well as weight reduction of air conditioners. These refrigerant devices include evaporators, condensers, compressors, The configuration of the expansion valve, etc. is configured to exchange heat with the air in the room as the refrigerant is compressed and expanded while internally circulating through the pipe to form a structure connected to each other by a pipe.

In the case of a conventional air conditioner system, a refrigerant circulates through a compressor, a condenser, an expansion valve, and an evaporator sequentially, thereby absorbing heat from the evaporator and releasing heat from the condenser. In this case, the evaporator is located indoors, and the condenser is located outdoors together with the compressor. As described above, by absorbing heat from an evaporator located indoors and releasing heat from a condenser located outdoors, indoor heat can be transferred to the outdoors, and the indoor space can be kept cool.

However, in such a conventional air conditioner system, since the refrigerant must move directly between the indoor device and the outdoor device, a hole in the wall must be drilled to connect a pipe through which the refrigerant can move. In addition, there is a problem of having to refill the hole drilled in the wall when the air conditioner is installed and then removed.

However, in the case of the conventional air conditioner, the structure is very complicated, so the production process is difficult, and the overall volume of the device is enlarged from the components such as a compressor or a condenser, and there is a problem that the production cost is high. In addition, the conventional air conditioner has a risk of leakage of chlorofluorocarbon, a refrigerant, as well as a problem that the refrigerant naturally leaks over time, so it is cumbersome to manage and requires maintenance costs because the refrigerant must be periodically replenished. there was.

In order to solve this problem, as in Patent Document 1, a window type air conditioner that can be installed on a window connecting the inside and outside of a room has been developed. In some cases, there is a problem that the role of a window cannot be performed.

In addition, as a prior art that has been disclosed to solve the above problems, Patent Document 2 discloses: a blower that sucks in and blows outside air; An intake having a hollow portion and having a plurality of air injection passages communicating with an inner peripheral surface and an outer peripheral surface thereof, the intake is fixed to the inside and an intake distribution space communicating with the outside of the plurality of air injection passages of the intake is formed; a cooling turbine rotatably provided in the hollow part, rotated by the air injected through the air injection passage, and comprising turbine blades for cooling the injected air and discharging it in the axial direction; a blower pipe communicating the blower and the intake air distribution space; a cooling air discharge pipe for discharging air cooled by the cooling turbine; a first heat exchanger provided in the blower pipe to exchange heat with external air sucked into the blower; a second heat exchanger provided in the blower pipe to exchange heat with the cooling air discharged through the cooling air discharge pipe; a second high-temperature air supply line having one end in communication with the blower pipe and the other end communicating with the outlet end of the cooling air discharge pipe; A refrigerant-free air conditioner is known, characterized in that the use of a refrigerant is unnecessary as it is configured to include a valve for temperature control provided in the second high-temperature air supply line.

However, in the case of Patent Document 2 above, there is a problem in that the cooling efficiency is remarkably reduced by simply cooling the air with only a blower and a cooling turbine, and there is a problem in that the amount of power consumption is large due to excessive use of a blower or a cooling turbine.

[Prior art literature]

(Patent Document 1) Korea Registered Utility Model No. 0156397

(Patent Document 2) Korean Patent No. 1173518

The present invention uses a phase change material (Phase Change Material) to maintain the temperature of cooling water at a low temperature to cool indoor air, and to provide a phase change material that can perform air cleaning, dehumidification, and cooling in one device with high efficiency. An object of the present invention is to provide a dual air-conditioning device used.

In order to solve the above problems, an embodiment of the present invention provides a dual air conditioner using a phase change material, comprising: an upper fan for discharging air cooled inside the dual air conditioner to the outside; a PCM module including a PCM case, a PCM material disposed inside the PCM case, and a PCM internal pipe capable of performing heat exchange with the PCM material, and a cooling water flowing therein; a circulation pump for circulating the cooling water flowing through the PCM internal pipe; a compressor, a first condenser, and an expansion valve implementing a refrigeration cycle using a refrigerant; an upper heat exchange unit to which the refrigerant is introduced to exchange heat with surrounding air; an intermediate heat exchange unit located below the upper heat exchange unit, the cooling water being introduced to perform heat exchange with surrounding air; a first heat exchange module including; a lower heat exchange part located below the intermediate heat exchange part, the refrigerant and the cooling water are introduced to perform heat exchange with surrounding air, and the refrigerant and the cooling water exchange heat with each other; and a switching valve for changing an operation mode by selectively controlling that the refrigerant passing through the first condenser is introduced into the upper heat exchange unit or into the lower heat exchange unit; and, when the dual air conditioner is operated in the cooling mode Provided is a dual air conditioner in which air introduced from the outside can be lowered in temperature by the first heat exchange module and discharged to the outside by the upper fan.

In one embodiment of the present invention, the dual air conditioner device, the evaporation module disposed below the first heat exchange module, the external air is introduced from the suction port, and has a hollow cylindrical structure formed of a porous material; further comprising, Provided is a dual air conditioner in which the condensed water condensed in the first heat exchange module is sprayed into the evaporation module and vaporized while the temperature of the external air introduced from the suction port is primarily lowered.

In one embodiment of the present invention, the dual air conditioner device, surrounds the evaporation module disposed below the first heat exchange module, the air cleaning filter having a hollow cylindrical structure; provides a dual air conditioner device further comprising .

In one embodiment of the present invention, when the selector valve is in the first operation mode, the refrigerant passing through the first condenser is introduced into the lower heat exchange unit, and after the refrigerant introduced into the lower heat exchange unit passes through the upper heat exchange unit, the compressor When the switching valve is in the second operation mode, the refrigerant passing through the first condenser is introduced into the upper heat exchange unit, and the refrigerant introduced into the upper heat exchange unit is introduced into the compressor after passing through the lower heat exchange unit, Dual air conditioning is provided.

In an embodiment of the present invention, when the selector valve is in the first operation mode, the upper heat exchanger serves as an evaporator by introducing the refrigerant that has passed through the expansion valve and performing heat exchange with the surrounding air, and the selector valve is In the second operation mode, the upper heat exchange unit serves as a second condenser by introducing the refrigerant that has passed through the switching valve and performing heat exchange with the surrounding air, and the intermediate heat exchange unit is cooled inside the PCM module, and the A dual air conditioner is provided, in which coolant that has passed through a circulation pump is introduced to perform heat exchange with surrounding air.

In an embodiment of the present invention, when the selector valve is in the first operation mode, the lower heat exchange unit may introduce at least one of the refrigerant passing through the selector valve and the cooling water passing through the circulation pump to perform heat exchange with ambient air and It serves as a second condenser by performing any one or more of mutual heat exchange between the refrigerant and the coolant, and when the switching valve is in the second operation mode, the lower heat exchange unit, the refrigerant passing through the expansion valve and the circulation pump Provided is a dual air conditioner, in which cooling water is introduced and serves as an evaporator by performing heat exchange with ambient air and mutual heat exchange between the refrigerant and the cooling water.

In an embodiment of the present invention, the lower heat exchanger includes a third pipe through which a refrigerant and cooling water can flow abnormally, and the third pipe includes an internal pipe and an external pipe. It provides a dual air conditioner having a structure, wherein any one of the refrigerant and the cooling water can flow through the inner pipe, and the other one of the refrigerant and the cooling water can flow through the external pipe.

In an embodiment of the present invention, the dual air conditioner device further includes a second heat exchange module disposed between the compressor and the first condenser, the second heat exchange module including a multi-pipe pipe therein, and in the first heat exchange module Provided is a dual air conditioner in which condensed water and the refrigerant discharged from the compressor are introduced into the multi-tube pipe inside the second heat exchange module, whereby the condensed water and the refrigerant can exchange heat with each other.

In an embodiment of the present invention, the dual air conditioner may operate in a cooling mode, and the cooling mode may include a first cooling mode in which the circulation pump and the refrigeration cycle operate simultaneously; and a second cooling mode in which only the circulation pump operates; in the cooling mode, air introduced from the outside of the case exchanges heat with the first heat exchange module and is discharged to the outside of the case by the upper fan, dual air conditioner provide the device.

In one embodiment of the present invention, the dual air conditioner device includes: a drip tray capable of storing the water condensed in the first heat exchange module; and a lower fan disposed adjacent to the first condenser, wherein the dual air conditioner may operate in any one of a dehumidification regeneration mode and a cooling mode, and the air introduced from the outside of the case in the dehumidification regeneration mode Exchanging heat with the first heat exchange module, the condensed water condensed in the first heat exchange module is introduced into the drip tray, and in the cooling mode, the heat of the first condenser is absorbed into the drip tray by the operation of the lower fan , dual air conditioners are provided.

In order to solve the above problems, an embodiment of the present invention provides a control method of a dual air conditioner using a phase change material, the dual air conditioner comprising: an upper fan for discharging air cooled from the inside to the outside; a PCM module including a PCM case, a PCM material disposed inside the PCM case, and a PCM internal pipe capable of performing heat exchange with the PCM material, and a cooling water flowing therein; a circulation pump for circulating the cooling water flowing through the PCM internal pipe; a compressor, a first condenser, and an expansion valve implementing a refrigeration cycle using a refrigerant; an upper heat exchange unit to which the refrigerant is introduced to exchange heat with surrounding air; an intermediate heat exchange unit located below the upper heat exchange unit, the cooling water being introduced to perform heat exchange with surrounding air; a first heat exchange module including; a lower heat exchange part located below the intermediate heat exchange part, the refrigerant and the cooling water are introduced to perform heat exchange with surrounding air, and the refrigerant and the cooling water exchange heat with each other; a switching valve for switching the flow of the refrigerant that has passed through the first condenser; and, according to the operation of the switching valve, the dual air conditioner operates in a cooling mode for cooling the surrounding air, or controls the humidity of the surrounding air Provided is a method for controlling a dual air conditioner, which operates in a dehumidifying regeneration mode for lowering.

In an embodiment of the present invention, when the dual air conditioner operates in the cooling mode, the switching valve allows the refrigerant that has passed through the first condenser to be introduced into the lower heat exchange unit, and the refrigerant introduced into the lower heat exchange unit is transferred to the upper part. The flow path is controlled to be introduced into the compressor after passing through the heat exchange unit, and when the dual air conditioner operates in the dehumidification regeneration mode, the switching valve allows the refrigerant passing through the first condenser to be introduced into the upper heat exchange unit, and the upper heat exchange Provided is a method for controlling a dual air conditioner, in which a flow path is controlled so that the refrigerant introduced into the unit is introduced into the compressor after passing through the lower heat exchange unit.

In one embodiment of the present invention, when the dual air conditioner device operates in the cooling mode, the upper heat exchange unit serves as an evaporator by introducing the refrigerant that has passed through the expansion valve and performing heat exchange with the surrounding air, and the dual air conditioner When the device operates in the dehumidification regeneration mode, the upper heat exchanger serves as a second condenser by introducing the refrigerant passing through the switching valve and performing heat exchange with the surrounding air.

In one embodiment of the present invention, when the dual air conditioner operates in the cooling mode, the lower heat exchange unit introduces at least one of the refrigerant passing through the switching valve and the cooling water passing through the circulation pump to exchange heat with ambient air. and a second condenser by performing at least one of mutual heat exchange between the refrigerant and the cooling water, and when the dual air conditioner operates in a dehumidification regeneration mode, the lower heat exchanger may include the refrigerant passing through the expansion valve and the circulation Provided is a method for controlling a dual air conditioner, in which coolant that has passed through a pump is introduced to perform heat exchange with ambient air and mutual heat exchange between the coolant and the coolant, thereby serving as an evaporator.

In an embodiment of the present invention, the cooling mode may include: a first cooling mode in which the circulation pump and the refrigerating cycle operate simultaneously; and a second cooling mode in which only the circulation pump operates.

In an embodiment of the present invention, the dual air conditioner may operate in a first cooling mode in which cooling is performed by a refrigerant and coolant, and in the first cooling mode, the upper fan, the circulation pump, the compressor, and The lower fan is turned on, the switching valve is controlled such that the refrigerant that has passed through the first condenser is introduced into the lower heat exchanger, and the cooling water and the refrigerant circulate inside the dual air conditioner. do.

In an embodiment of the present invention, the dual air conditioner may operate in a second cooling mode in which cooling is performed by cooling water, and in the second cooling mode, the upper fan and the circulation pump are turned on, and the Provided is a method for controlling a dual air conditioner in which coolant circulates inside the dual air conditioner.

In an embodiment of the present invention, the dual air conditioner may operate in a dehumidification regeneration mode by a refrigerant and cooling water, and in the dehumidification regeneration mode, the upper fan, the compressor, and the circulation pump are turned on, and the switching The valve is controlled so that the refrigerant passing through the first condenser is introduced into the upper heat exchange unit, the cooling water and the refrigerant circulate inside the dual air conditioner, and the cooling water is cooled by the refrigerant in the lower heat exchange unit. Provided is a method for controlling a dual air-conditioning device in which a PCM material is charged.

In one embodiment of the present invention, the dual air conditioner device includes: a drip tray capable of storing the water condensed in the first heat exchange module; and a lower fan disposed adjacent to the first condenser, wherein in the cooling mode, the lower fan is turned on, so that the heat of the first condenser is absorbed into the water stored in the drip tray, and the dehumidification regeneration mode provides a method for controlling a dual air conditioner in which the lower fan is turned off.

In an embodiment of the present invention, the lower heat exchange unit includes a third pipe through which a refrigerant and cooling water can flow therein, and the third pipe includes an internal pipe and an external pipe. The structure of a multi-pipe pipe including an internal pipe and an external pipe. and, when the dual air conditioner operates in the dehumidification regeneration mode, any one of the refrigerant and the cooling water flows through the internal pipe, and the other one of the refrigerant and the cooling water flows through the external pipe, so that the refrigerant and the cooling water flow. Provided is a method for controlling a dual air conditioner in which coolant can exchange heat.

In order to solve the above problems, an embodiment of the present invention is a heat exchange assembly used in a dual air conditioner using a phase change material, and an upper heat exchange unit in which a refrigerant in a refrigeration cycle is introduced to perform heat exchange with surrounding air. ; an intermediate heat exchange unit located below the upper heat exchange unit, the cooling water cooled by the PCM material is introduced to perform heat exchange with the surrounding air; a lower heat exchange unit located under the intermediate heat exchange unit, wherein the refrigerant and the cooling water are introduced to perform heat exchange with surrounding air, and the refrigerant and the cooling water may exchange heat with each other; and a switching valve for changing an operation mode by selectively controlling that the refrigerant passing through the first condenser in the refrigeration cycle is introduced into the upper heat exchange unit or is introduced into the lower heat exchange unit.

In one embodiment of the present invention, the upper heat exchange unit, a first pipe through which a refrigerant can flow therein; a first port disposed at one end of the first pipe and through which the refrigerant passing through the expansion valve in the refrigeration cycle is introduced or the refrigerant passing through the selector valve is discharged by the operation of the selector valve; and a second port disposed at the other end of the first pipe and through which the refrigerant passing through the selector valve is introduced, or through which the refrigerant passing through the expansion valve in the refrigeration cycle is discharged by the operation of the selector valve. , provides a heat exchange assembly.

In one embodiment of the present invention, the intermediate heat exchange unit, a second pipe through which cooling water can flow; a third port disposed at one end of the second pipe and into which the cooling water passing through the lower heat exchange unit is introduced; and a fourth port disposed at the other end of the second pipe and through which the coolant introduced through the third port is discharged.

In one embodiment of the present invention, the lower heat exchange unit, a third pipe through which a refrigerant and cooling water can flow therein; Circulation disposed at one end of the third pipe, the refrigerant passing through the expansion valve in the refrigeration cycle is introduced by the operation of the selector valve, or the refrigerant passing through the selector valve is discharged, and disposed adjacent to the PCM module a fifth port through which the coolant passing through the pump is discharged; and the refrigerant that has passed through the selector valve is introduced at the other end of the third pipe, or the refrigerant that has passed through the expansion valve in the refrigeration cycle is discharged by the operation of the selector valve, and the refrigerant that has passed through the circulation pump is introduced It provides a heat exchange assembly, including; a sixth port.

In one embodiment of the present invention, the lower heat exchanger includes a third pipe through which a refrigerant and cooling water can flow therein, and the third pipe has a multi-pipe structure including an internal pipe and an external pipe, Any one of the refrigerant and the cooling water may flow through the inner pipe, and the other one of the refrigerant and the cooling water may flow through the external pipe.

In an embodiment of the present invention, the upper heat exchange unit includes a first heat exchange plate through which the first pipe penetrates and contacts at a plurality of points, and the intermediate heat exchange unit includes a second pipe through which the second pipe penetrates and contacts at a plurality of points. It provides a heat exchange assembly, including; including; a third heat exchange plate through which a third pipe penetrates at a plurality of points and contacts the lower heat exchange unit.

In one embodiment of the present invention, the first heat exchange plate, the second heat exchange plate disposed at the lower end of the first heat exchange plate, and the third heat exchange plate disposed at the lower end of the second heat exchange plate are conductive to each other. To provide a heat exchange assembly, which is disposed in contact with a plurality of points to perform heat exchange by the

In an embodiment of the present invention, when the selector valve is in the first operation mode, the refrigerant passing through the first condenser in the refrigeration cycle is introduced into the lower heat exchange unit, and the refrigerant introduced into the lower heat exchange unit passes through the upper heat exchange unit After being introduced into the compressor in the refrigeration cycle, and when the switching valve is in the second operation mode, the refrigerant passing through the first condenser in the refrigeration cycle is introduced into the upper heat exchange unit, and the refrigerant introduced into the upper heat exchange unit is It provides a heat exchange assembly, which is introduced into the compressor in the refrigeration cycle after passing through the lower heat exchange unit.

In one embodiment of the present invention, the upper heat exchange unit, a first pipe through which a refrigerant can flow therein; a first port disposed at one end of the first pipe and through which the refrigerant passing through the expansion valve in the refrigeration cycle is introduced or the refrigerant passing through the selector valve is discharged by the operation of the selector valve; and a second port disposed at the other end of the first pipe and through which the refrigerant passing through the selector valve is introduced, or the refrigerant passing through the expansion valve in the refrigeration cycle is discharged by the operation of the selector valve; and , The lower heat exchange unit, a third pipe through which refrigerant and cooling water can flow therein; Circulation disposed at one end of the third pipe, the refrigerant passing through the expansion valve in the refrigeration cycle is introduced by the operation of the selector valve, or the refrigerant passing through the selector valve is discharged, and disposed adjacent to the PCM module a fifth port through which the coolant passing through the pump is discharged; and the refrigerant that has passed through the selector valve is introduced at the other end of the third pipe, or the refrigerant that has passed through the expansion valve in the refrigeration cycle is discharged by the operation of the selector valve, and the refrigerant that has passed through the circulation pump is introduced It provides a heat exchange assembly, including; a sixth port.

In one embodiment of the present invention, the first port is arranged in connection with the expansion valve in the refrigeration cycle, the second port is arranged in connection with the switching valve, and the fifth port is the said port in the refrigeration cycle. It is disposed in connection with the expansion valve, and the sixth port is disposed in connection with the switching valve, and provides a heat exchange assembly.

According to an embodiment of the present invention, the first condenser is disposed inside the case rather than being external as a separate outdoor unit, and has a structure capable of compensating for heat generated by the first condenser inside, and a separate outdoor unit is provided. It can exert the effect of realizing an air conditioner without installation.

According to an embodiment of the present invention, as the dual air conditioner device has an air cleaning filter disposed therein, and the air cleaning filter has an evaporation module disposed therein, it is possible to perform both an air cleaning function and a cooling function as a single device. possible effect can be exerted.

According to an embodiment of the present invention, a dual air conditioner device includes a heat exchange assembly in which a first heat exchange module and a selector valve operate as one device, and an upper heat exchange unit provided in the first heat exchange module according to an operation mode of the selector valve And by changing the role of the lower heat exchanger, it is possible to exhibit the effect of performing both the cooling function and the dehumidifying function as a single device.

According to an embodiment of the present invention, the refrigerant and the cooling water perform primary heat exchange with surrounding air and secondary heat exchange with each other by a third pipe forming a multi-tube pipe structure, thereby improving heat exchange efficiency and PCM material It can exhibit the effect of improving the charging efficiency of

According to one embodiment of the present invention, when the dual air conditioner operates in the dehumidification regeneration mode, the PCM material is phase-changed and charged at the same time as the external air is dehumidified, thereby minimizing the hassle of periodically replenishing the PCM material and maintaining the maintenance cost. can have the effect of saving

1 schematically shows an external appearance of a dual air conditioner according to an embodiment of the present invention.

2 schematically shows a rear side of a dual air conditioner according to an embodiment of the present invention.

3 schematically shows an exploded perspective view of an internal module according to an embodiment of the present invention.

4 schematically shows an exploded perspective view of an internal module according to an embodiment of the present invention.

5 schematically shows an internal configuration according to an embodiment of the present invention.

6 schematically shows an internal configuration of a PCM module according to an embodiment of the present invention.

7 schematically shows an exploded perspective view of an evaporation module according to an embodiment of the present invention.

8 schematically shows a cross-section of an assembling state of an evaporation module according to an embodiment of the present invention.

9 schematically shows a first heat exchange module according to an embodiment of the present invention.

10 schematically shows a plan view of an upper heat exchanger according to an embodiment of the present invention.

11 schematically shows a plan view of an intermediate heat exchanger according to an embodiment of the present invention.

12 schematically shows a plan view of a lower heat exchanger according to an embodiment of the present invention.

13 schematically shows a third pipe according to an embodiment of the present invention.

14 schematically shows a cross-section of a switching valve according to an embodiment of the present invention.

15 conceptually illustrates a movement path of a refrigerant and coolant in a first cooling mode according to an embodiment of the present invention.

16 conceptually illustrates a movement path of coolant in the second cooling mode according to an embodiment of the present invention.

17 is a conceptual diagram illustrating a movement path of a refrigerant and cooling water in a dehumidification regeneration mode according to an embodiment of the present invention.

18 conceptually illustrates a movement path of condensed water according to an embodiment of the present invention.

19 is a conceptual diagram illustrating an air flow inside a dual air conditioner according to an embodiment of the present invention.

20 conceptually illustrates a temperature gradient inside the first heat exchange module when the dual air conditioner according to an embodiment of the present invention is in the first cooling mode.

21 is a conceptual diagram illustrating an internal temperature gradient of the first heat exchange module when the dual air conditioner according to an embodiment of the present invention is in a dehumidifying regeneration mode.

22 schematically shows control elements of a control unit according to an embodiment of the present invention.

23 schematically shows operating elements of a dual air conditioner according to an embodiment of the present invention.

Hereinafter, various embodiments and/or aspects are disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth to provide a thorough understanding of one or more aspects. However, it will also be recognized by one of ordinary skill in the art that such aspect(s) may be practiced without these specific details. The following description and accompanying drawings set forth in detail certain illustrative aspects of one or more aspects. These aspects are illustrative, however, and some of the various methods in principles of various aspects may be employed, and the descriptions set forth are intended to include all such aspects and their equivalents.

As used herein, “embodiment”, “example”, “aspect”, “exemplary”, etc. may not be construed as an advantage or advantage in any aspect or design described above over other aspects or designs. .

In addition, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from context, "X employs A or B" is intended to mean one of the natural implicit substitutions. That is, X employs A; X employs B; or when X employs both A and B, "X employs A or B" may apply to either of these cases. It should also be understood that the term “and/or” as used herein refers to and includes all possible combinations of one or more of the listed related items.

Also, the terms "comprises" and/or "comprising" mean that the feature and/or element is present, but excludes the presence or addition of one or more other features, elements and/or groups thereof. should be understood as not

Also, terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are generally understood by those of ordinary skill in the art to which the present invention belongs. have the same meaning as Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in an embodiment of the present invention, an ideal or excessively formal meaning is not interpreted as

FIG. 1 schematically shows an external appearance of a dual air conditioner 1 according to an embodiment of the present invention, and FIG. 2 schematically shows a rear surface of the dual air conditioner 1 according to an embodiment of the present invention.

As shown in FIGS. 1 and 2 , the dual air conditioner 1 may include a case 100 on the outside, and the case 100 includes an air outlet cover 110 and an upper case 120 . , a lower case 130 , a drip tray 140 , a suction port 150 , and a condensation heat discharge unit 160 .

The tuyere cover 110 can move in the vertical direction by a tuyere cover moving module 111 to be described later as the dual air conditioner 1 is operated, and the air cooled inside the dual air conditioner 1 is moved. It can serve as a passage to allow the exhaust to the outside.

The upper case 120 is disposed below the air outlet cover 110 , and the lower case 130 is disposed below the upper case 120 , and is disposed inside the dual air conditioner 1 . The module 200 may be protected from the external environment.

The drip tray 140 may be disposed on the lower side of the lower case 130 to store water including condensed water generated therein as the dual air conditioner 1 operates.

The suction port 150 is disposed on the rear side of the lower case 130 , and may suck external air into the dual air conditioner 1 . The outside air may be discharged to the outside again through the air outlet cover 110 after the temperature is lowered due to heat exchange with a refrigerant and/or cooling water inside the dual air conditioner 1 .

The condensed heat discharging unit 160 is disposed at the lower end of the lower case 130 and on the rear side of the drip tray 140 , and the refrigerant and the refrigerant in the first condenser 240 disposed inside the dual air conditioner 1 . When heat generated due to heat exchange with ambient air is discharged to the outside by a lower fan 241 to be described later, the lower fan 241 may serve as a passage for discharging the heat. At the same time, the heat of the first condenser 240 may be absorbed by the drip tray 140 by the operation of the lower fan 241 , which will be described in detail later.

Hereinafter, the internal module 200 and its components of the dual air conditioner 1 according to an embodiment of the present invention will be described in detail.

3 schematically shows an exploded perspective view of the internal module 200 according to an embodiment of the present invention, and FIG. 4 schematically shows an exploded perspective view of the internal module 200 according to an embodiment of the present invention. do. 5 schematically shows an internal configuration according to an embodiment of the present invention.

The dual air conditioner 1 according to an embodiment of the present invention is a dual air conditioner 1 using a phase change material, and an upper fan 210 for discharging air cooled inside the dual air conditioner 1 to the outside. ); A PCM case 223, a PCM material 222 disposed inside the PCM case 223, and a PCM internal pipe 221 capable of performing heat exchange with the PCM material 222, and a cooling water flowing therein. PCM module 220; a circulation pump 227 for circulating the cooling water flowing through the PCM internal pipe 221; a compressor 230 , a first condenser 240 , and an expansion valve 250 for implementing a refrigeration cycle using a refrigerant; an upper heat exchange unit 261 through which the refrigerant is introduced to exchange heat with surrounding air; an intermediate heat exchange part 262 located below the upper heat exchange part 261, the cooling water being introduced to perform heat exchange with surrounding air; It is located below the intermediate heat exchange unit 262, the refrigerant and the cooling water are introduced to perform heat exchange with surrounding air, and a lower heat exchange unit 263 capable of performing mutual heat exchange between the refrigerant and the cooling water; includes; a first heat exchange module 260; and a switching valve 280 for changing an operation mode by selectively controlling that the refrigerant that has passed through the first condenser 240 is introduced into the upper heat exchange unit 261 or into the lower heat exchange unit 263; Including, when the dual air conditioner 1 is operated in the cooling mode, the temperature of the air introduced from the outside is lowered by the first heat exchange module 260 and discharged to the outside by the upper fan 210 there is.

According to an embodiment of the present invention, the dual air conditioner 1 is disposed below the first heat exchange module 260 , and external air is introduced from the suction port 150 , and has a hollow cylindrical structure formed of a porous material. The evaporation module 290 having a; may further include. According to an embodiment of the present invention, the dual air conditioner device 1 surrounds an evaporation module 290 disposed below the first heat exchange module 260, and has a hollow cylinder structure. ); may further include.

According to an embodiment of the present invention, the dual air conditioner 1 is disposed between the compressor 230 and the first condenser 240, and a second heat exchange module 270 including a multi-pipe pipe therein. ); further, by introducing the condensed water condensed in the first heat exchange module 260 and the refrigerant discharged from the compressor 230 into the multi-tube pipe inside the second heat exchange module 270, the condensed water and the refrigerant may perform mutual heat exchange.

According to an embodiment of the present invention, the dual air conditioner (1) includes: a drip tray (140) capable of storing the water condensed in the first heat exchange module (260); and a lower fan 241 disposed adjacent to the first condenser 240 .

According to an embodiment of the present invention, the dual air conditioner device 1 may further include a controller 400 that controls operations of components of the dual air conditioner device 1 in response to a user's manipulation. .

The above-described components of the inner module 200 may be disposed inside the case 100 . The internal module 200 includes the upper fan 210 , the PCM module 220 , the compressor 230 , the first condenser 240 , the expansion valve 250 , and the first heat exchange module 260 . ), the second heat exchange module 270 , the switching valve 280 , and the evaporation module 290 .

The upper fan 210 may be disposed inside the upper case 120 and induce a flow of air to discharge the air cooled inside the dual air conditioner 1 to the outside. Preferably, as the upper fan 210 operates, air cooled inside the dual air conditioner 1 may be introduced into the tuyere cover 110 , and the tuyere cover moving module 111 operates on the upper side. The cooled air may be discharged to the outside through the tuyere cover 110 moving to the upper side.

Meanwhile, the PCM module 220 may be disposed inside the lower case 130 , and may include the PCM internal pipe 221 , the PCM material 222 , and the PCM case 223 . The PCM material 222 may perform heat exchange between the water flowing inside the PCM module 220 and the PCM internal pipe 221 , and accordingly, the PCM module 220 may produce cooling water. Details related to the PCM module 220 will be described later with reference to FIG. 6 .

Meanwhile, the dual air conditioner 1 may include the circulation pump 227 disposed adjacent to the PCM module 220 and circulating the cooling water flowing through the PCM internal pipe 221 . The circulation pump 227 may circulate the cooling water cooled by the PCM module 220 in the dual air conditioner 1 . Details of the circulation pump 227 will be described later with reference to FIGS. 6 , 15 , 16 , and 17 .

Meanwhile, the compressor 230 and the first condenser 240 may be disposed inside the lower case 130 , and the expansion valve 250 may be disposed inside the upper case 120 . The compressor 230 , the first condenser 240 , and the expansion valve 250 may implement a refrigeration cycle using a refrigerant, and the refrigerant that has passed through the refrigeration cycle may have a temperature below room temperature. Preferably, the temperature of the refrigerant cooled by the refrigeration cycle may correspond to between about 8 degrees and 12 degrees, more preferably about 10 degrees. The details of the refrigeration cycle will be described later with reference to FIGS. 15 and 17 .

Meanwhile, the first condenser 240 may include the lower fan 241 at an adjacent position, and heat that may be generated in the first condenser 240 is transferred to the outside by the lower fan 241 . can be discharged Preferably, the heat may be generated by the first condenser 240 performing heat exchange with ambient air in the process of condensing the refrigerant, and the heat is disposed adjacent to the first condenser 240 . It may be moved to the condensed heat discharge unit 160 by the lower fan 241 and discharged to the outside. In addition, the heat of the first condenser 240 may be absorbed by the drip tray 140 by the operation of the lower fan 241 . Accordingly, in the present invention, the first condenser 240 is disposed inside the case 100 rather than being external as a separate outdoor unit, and the heat generated by the first condenser 240 is compensated inside. As a structure that can do this, it is possible to exhibit the effect of realizing an air conditioner without installing a separate outdoor unit.

On the other hand, the first heat exchange module 260 is disposed inside the upper case 120 , and the intermediate heat exchange part 262 is located below the upper heat exchange part 261 and the upper heat exchange part 261 . , and the lower heat exchange part 263 positioned below the intermediate heat exchange part 262 . The upper heat exchange unit 261 may serve as an evaporator or a second condenser according to the flow of the refrigerant and/or the cooling water flowing therein, and the lower heat exchange unit 263 may include the refrigerant and/or the refrigerant flowing therein. Alternatively, it may serve as a second condenser or evaporator according to the flow of the coolant, and the upper heat exchange unit 261 and the lower heat exchange unit 263 include the compressor 230, the first condenser 240, And it can implement the refrigeration cycle together with the expansion valve (250). Details related to the first heat exchange module 260 will be described later with reference to FIGS. 9, 10, 11, 12, and 13 .

Meanwhile, the second heat exchange module 270 may be disposed between the compressor 230 and the first condenser 240 in the lower case 130 . The second heat exchange module 270 may have a multi-tube pipe therein, and the condensed water that has not been evaporated in the evaporation module 290 and the refrigerant discharged from the compressor 230 in the multi-tube pipe are simultaneously discharged from the compressor 230 . flow, so that mutual heat exchange can be performed. Details of the multi-tube pipe will be described later with reference to FIG. 13 .

On the other hand, the switching valve 280 is disposed inside the upper case 120, and according to the operation mode of the dual air conditioner 1, a flow path through which the refrigerant passing through the inside of the switching valve 280 can flow. can be controlled Details of the switching valve 280 will be described later with reference to FIG. 14 .

Meanwhile, the evaporation module 290 is disposed on the inner upper end of the lower case 130 , and may introduce external air from the suction port 150 . Also, the dual air conditioner 1 may include the air purifying filter 300 surrounding the evaporation module 290 and having a hollow cylindrical structure. Accordingly, the external air introduced through the suction port 150 may filter out impurities by the air cleaning filter 300 , and the outside air from which the impurities are filtered passes through the first heat exchange module 260 . It can be discharged to the outside at the top. In this way, as the dual air conditioning device 1 arranges the air purifying filter 300 inside, and the air purifying filter 300 disposes the evaporation module 290 therein, air as a device It can exhibit the effect of performing both a cleaning function and a cooling function. Details on this will be described later with reference to FIGS. 7 and 8 .

Meanwhile, the control unit 400 is disposed inside the upper case 120 and may operate the components of the dual air conditioner 1 in response to a user's manipulation. Details of the operation of the control unit 400 will be described later with reference to FIGS. 22 and 23 .

Meanwhile, the air outlet cover moving module 111 may be disposed in contact with one surface of the air outlet cover 110 inside the upper case 120 . As described above, the air outlet cover 110 moves in the vertical direction as the dual air conditioner 1 operates, so that the air cooled inside the dual air conditioner 1 can be discharged to the outside. can play a role At this time, the tuyere cover 110 may be moved in the vertical direction by the tuyere cover moving module 111, and the movement range may be controlled according to a user's operation.

Meanwhile, the drip tray 140 is disposed below the lower case 130 to store water generated inside as the dual air conditioner 1 operates. Preferably, as the dual air conditioner 1 is operated, the condensed water condensed in the first heat exchange module 260 may be stored in a condensed water storage unit 264 provided under the first heat exchange module 260 . is stored in the evaporator and discharged to the evaporation module 290 so that a part of the condensed water is evaporated, and the remaining part of the condensed water is discharged to the second heat exchange module 270, and inside the second heat exchange module 270, the It may perform heat exchange with the refrigerant discharged from the compressor 230 , and may be discharged to the drip tray 140 .

6 schematically shows the internal configuration of the PCM module 220 according to an embodiment of the present invention.

As shown in FIG. 6 , the PCM module 220 according to an embodiment of the present invention includes the PCM case 223 , the PCM material 222 disposed inside the PCM case 223 , and the PCM Heat exchange with the material 222 may be performed, and a PCM internal pipe 221 through which cooling water flows may be included. In addition, the PCM module 220, the PCM replenishment pressure tank 225; and an air vent 224 capable of discharging gas to the outside; may further include.

The PCM material 222 may be an organic, inorganic, or mixed organic and inorganic PCM (Phase Change Material) material, and may undergo a phase change at a temperature below room temperature, and thus the PCM internal pipe 221 . ), a known PCM material 222 capable of performing heat exchange with the flowing coolant may be used. Preferably, the PCM material 222 having a phase change temperature of 16 to 20 degrees, more preferably, about 18 degrees, may be used. The PCM material 222 absorbs heat from the cooling water when the dual air conditioner 1 operates in a cooling mode to be described later, and a part of the PCM material 222 changes to a liquid state, and the dual air conditioner 1 When (1) operates in the dehumidifying regeneration mode to be described later, a liquid state material may undergo a phase change into a solid state material.

The PCM module 220 according to an embodiment of the present invention may further include a coolant tank 226 capable of storing the coolant cooled in the PCM module 220 in an internal space.

The cooling water tank 226 is disposed adjacent to the PCM module 220 to receive and store the cooling water discharged from the PCM module 220, and to supply the cooling water according to the operation of the dual air conditioner 1 . It can be discharged to the circulation pump (227). The cooling water tank 226 may temporarily store the cooling water, and if necessary, store the cooling water for a predetermined period of time.

On the other hand, the dual air conditioner device 1 according to an embodiment of the present invention, as described above, the circulation pump 227 for circulating the coolant flowing through the PCM internal pipe 221; may include, The cooling water cooled by the PCM module 220 may be circulated inside the dual air conditioner 1 .

Preferably, the water flowing through the PCM internal pipe 221 may be cooled through heat exchange with the PCM material 222 accommodated in the PCM case 223, and the cooled water is used as cooling water in the cooling water tank. 226 , and as the dual air conditioner 1 operates, the circulation pump 227 introduces the coolant stored in the coolant tank 226 and discharges it to the first heat exchange module 260 . can do. More preferably, the cooling water cooled by the PCM module 220 is circulated to the first heat exchange module 260 by the circulation pump 227 , so that the dual air conditioner 1 is set in a cooling mode to be described later. Alternatively, it may operate in a dehumidifying regeneration mode.

7 schematically shows an exploded perspective view of the evaporation module 290 according to an embodiment of the present invention, and FIG. 8 is a schematic cross-section of an assembled state of the evaporation module 290 according to an embodiment of the present invention. shown as

According to an embodiment of the present invention, the dual air conditioner 1 is disposed below the first heat exchange module 260 , and external air is introduced from the suction port 150 , and has a hollow cylindrical structure formed of a porous material. The evaporation module 290 having a; further comprising, the condensed water condensed in the first heat exchange module 260 is sprayed into the evaporation module 290 and evaporated while the temperature of the outside air introduced from the suction port 150 can be lowered first.

As described above, the evaporation module 290 is disposed on the inner upper end of the lower case 130 , and may introduce external air from the suction port 150 .

The evaporation module 290 may be formed of a porous material and have a hollow cylindrical structure. When the condensed water condensed in the first heat exchange module 260 due to the above structure is sprayed into the evaporation module 290, the condensed water may be vaporized in the evaporation module 290, The temperature of the external air introduced from the suction port 150 may be lowered primarily by the vaporization of the condensed water. Preferably, as the condensed water vaporizes inside the evaporation module 290, the temperature of the air introduced from the outside of the case 100 is lowered primarily by the upper fan 210 to the outlet cover 110. It can be introduced into the upper side and discharged to the outside.

In addition, the evaporation module 290 may include a fan on the upper side, and as the fan rotates, the condensed water condensed in the first heat exchange module 260 may be supplied and sprayed to the evaporation module 290 . there is. In one embodiment of the present invention, the fan may be operated by air flowing in from the outside of the case 100, the condensed water supplied to the upper side of the fan is sprayed and the fan rotates, so that each of the fans Water can be sprayed radially to the tip of the blade. In addition, the condensed water may be stored in the condensed water storage unit 264 disposed below the first heat exchange module 260 and moved to the center of the fan through a hose connected to the condensed water storage unit 264 . The water droplets may move from the center of the fan to the tip of each blade of the fan by the rotation of the fan, the water droplets may be radially sprayed along the moving direction, and the sprayed water droplets may be a porous member. It may be formed on the evaporation module 290 . With such a configuration, as the water droplets are vaporized in the surrounding air passing through the evaporation module 290, cooling of the air may occur.

In addition, the evaporation module 290 may include a fan support and a fan plate on the upper side, the fan support may rotatably support the fan, and the fan plate may support the fan support. Since the fan plate is fixed inside the case 100 , the fan may be rotatably fixed inside the case 100 .

In one embodiment of the present invention, the fan may be rotated by receiving power from an external motor.

Meanwhile, as described above, the dual air conditioning device 1 according to an embodiment of the present invention surrounds the evaporation module 290 disposed below the first heat exchange module 260 and has a hollow cylindrical structure. It may further include; an air cleaning filter 300 having a.

Since the air cleaning filter 300 has a hollow cylindrical structure surrounding the evaporation module 290, the air introduced from the outside of the case 100 filters impurities and then moves to the inside of the evaporation module 290, As the condensed water is vaporized in the air from which impurities are filtered, the air cooled primarily may be introduced into the tuyere cover 110 by the upper fan 210 and discharged to the outside.

In this way, as the dual air conditioning device 1 arranges the air purifying filter 300 inside, and the air purifying filter 300 disposes the evaporation module 290 therein, air as a device It can exhibit the effect of performing both a cleaning function and a cooling function.

The heat exchange assembly 500 according to an embodiment of the present invention includes the first heat exchange module 260 and the switching valve 280 , the first heat exchange module 260 and the switching valve 280 . may be an assembly operating as a single device.

Hereinafter, the heat exchange assembly 500 used in the dual air conditioner 1 according to an embodiment of the present invention will be described in detail.

9 schematically shows the first heat exchange module 260 according to an embodiment of the present invention.

As a heat exchange assembly 500 used in the dual air conditioner 1 using a phase change material according to an embodiment of the present invention, an upper heat exchange unit (500) in which a refrigerant in a refrigeration cycle is introduced to perform heat exchange with surrounding air ( 261); an intermediate heat exchange part 262 located below the upper heat exchange part 261 and in which cooling water cooled by the PCM material 222 is introduced to perform heat exchange with the surrounding air; It is located below the intermediate heat exchange unit 262, the refrigerant and the cooling water are introduced to perform heat exchange with surrounding air, and a lower heat exchange unit 263 capable of performing mutual heat exchange between the refrigerant and the cooling water; includes; can do.

As described above, the first heat exchange module 260 includes the upper heat exchange part 261 , the intermediate heat exchange part 262 positioned below the upper heat exchange part 261 , and the intermediate heat exchange part 262 . ) may include the lower heat exchange unit 263 located at the lower side, which is schematically illustrated in FIG. 9 .

The upper heat exchange part 261, the refrigerant in the refrigeration cycle is introduced therein to perform heat exchange with surrounding air, and the intermediate heat exchange part 262 is provided with the PCM material 222 therein. The cooled water may be introduced to perform heat exchange with surrounding air, and the lower heat exchange unit 263 may have the refrigerant and the cooling water introduced therein to perform heat exchange with surrounding air.

10 is a diagram according to an embodiment of the present invention; A plan view of the upper heat exchanger 261 is schematically shown.

According to an embodiment of the present invention, the upper heat exchange unit 261 includes a first pipe 261.1 through which a refrigerant can flow; It is disposed at one end of the first pipe 261.1, and the refrigerant passing through the expansion valve 250 in the refrigeration cycle is introduced by the operation of the selector valve 280, or the refrigerant passing through the selector valve 280 is introduced. a first port 261.3 to be discharged; and the refrigerant disposed at the other end of the first pipe 261.1 and passing through the selector valve 280 is introduced, or the expansion valve 250 in the refrigeration cycle is operated by the operation of the selector valve 280. It may include; a second port 261.4 through which the last refrigerant is discharged.

According to an embodiment of the present invention, the upper heat exchange unit 261 may include a first heat exchange plate 261.2 through which the first pipe 261.1 penetrates and contacts at a plurality of points.

As shown in FIG. 10 , the upper heat exchange unit 261 may include the first pipe 261.1 , the first port 261.3 , and the second port 261.4 .

The first pipe 261.1, as described above, the refrigerant in the refrigeration cycle may be introduced therein. The refrigerant may perform heat exchange with air around the first pipe 261.1. In one embodiment of the present invention, the refrigerant flowing through the first pipe 261.1 may cool the surrounding air according to the role performed by the upper heat exchange unit 261, and the cooled air may It may be discharged to the outside through the air outlet cover 110 by the fan 210 . The role performed by the upper heat exchanger 261 may be changed according to the operation mode of the switching valve 280, which will be described later.

Meanwhile, the first port 261.3 may be disposed at one end of the first pipe 261.1 , and the second port 261.4 may be disposed at the other end of the first pipe 261.1 . That is, the first port 261.3 and the second port 261.4 are both ends of the first pipe 261.1, and the moving direction of the refrigerant flowing inside the first pipe 261.1 is the direction of the switching valve. It can be controlled by operating mode. Preferably, in an embodiment of the present invention, the refrigerant is introduced into the first port 261.3 disposed at one end of the first pipe 261.1, and the first pipe 261.1 disposed at the other end of the first pipe 261.1. The refrigerant may be discharged through the two ports 261.4, and in an embodiment of the present invention, the refrigerant is introduced into the second port 261.4 disposed at the other end of the first pipe 261.1 to the first pipe The refrigerant may be discharged to the first port 261.3 disposed at one end of 261.1. More preferably, the refrigerant may be introduced from the first port 261.3 and discharged to the second port 261.4 according to an operation mode of the switching valve 280 to be described later, and the switching to be described later. Depending on the operation mode of the valve 280 , it may be introduced from the second port 261.4 and discharged through the first port 261.3 .

On the other hand, the first heat exchange plate 261.2, in the form of a plate, the first pipe 261.1 may penetrate through at a plurality of points in contact. Due to the structure in which the first heat exchange plate 261.2 and the first pipe 261.1 are in contact with each other, the first heat exchange plate 261.2 and the first pipe 261.1 can perform heat exchange by conduction with each other. there is. Preferably, the first heat exchange plate 261.2 may contact the first pipe 261.1 to conduct heat exchange by conduction between the first pipes 261.1 disposed adjacent to each other. .

11 schematically shows a plan view of the intermediate heat exchanger 262 according to an embodiment of the present invention.

According to an embodiment of the present invention, the intermediate heat exchange unit 262 includes a second pipe 262.1 through which cooling water can flow; a third port (262.3) disposed at one end of the second pipe (262.1) and through which the cooling water passing through the lower heat exchange unit (263) is introduced; and a fourth port 262.4 disposed at the other end of the second pipe 262.1 and through which the coolant introduced through the third port 262.3 is discharged.

According to an embodiment of the present invention, the intermediate heat exchange unit 262 may include a second heat exchange plate 262.2 through which the second pipe 262.1 penetrates and contacts at a plurality of points.

11 , the intermediate heat exchange unit 262 may include the second pipe 262.1 , the third port 262.3 , and the fourth port 262.4 .

As described above, the second pipe 262.1 may introduce the cooling water cooled by the PCM module 220 therein. The cooling water may perform heat exchange with air around the second pipe 262.1. The cooling water flowing through the second pipe 262.1 may cool the surrounding air, and the cooled air may be discharged to the outside through the tuyere cover 110 by the upper fan 210 .

Meanwhile, the third port 262.3 may be disposed at one end of the second pipe 262.1 , and the fourth port 262.4 may be disposed at the other end of the second pipe 262.1 . That is, the third port 262.3 and the fourth port 262.4 may be both ends of the second pipe 262.1. Preferably, in an embodiment of the present invention, the cooling water may be introduced from the third port 262.3 and discharged through the fourth port 262.4.

On the other hand, the second heat exchange plate 262.2, in the form of a plate, the second pipe 262.1 may penetrate through at a plurality of points in contact. Due to the structure in which the second heat exchange plate 262.2 and the second pipe 262.1 are in contact with each other, the second heat exchange plate 262.2 and the second pipe 262.1 can perform heat exchange by conduction with each other. there is. Preferably, the second heat exchange plate 262.2 may be in contact with the second pipe 262.1 to conduct heat exchange by conduction between the second pipes 262.1 disposed adjacent to each other. .

12 schematically shows a plan view of the lower heat exchanger 263 according to an embodiment of the present invention.

According to an embodiment of the present invention, the lower heat exchange unit 263 includes a third pipe 263.1 through which refrigerant and cooling water can flow; The refrigerant disposed at one end of the third pipe 263.1 and passed through the expansion valve 250 in the refrigeration cycle is introduced by the operation of the selector valve 280, or the refrigerant that has passed through the selector valve 280 a fifth port 263.3 through which the cooling water is discharged and the cooling water passing through the circulation pump 227 disposed adjacent to the PCM module 220 is discharged; and the refrigerant disposed at the other end of the third pipe 263.1 and passing through the selector valve 280 is introduced, or the refrigerant that has passed through the expansion valve 250 in the refrigeration cycle by the operation of the selector valve 280 may be discharged, and a sixth port 263.4 through which the cooling water passing through the circulation pump 227 is introduced.

According to an embodiment of the present invention, the lower heat exchange unit 263 may include a third heat exchange plate 263.2 through which the third pipe 263.1 penetrates and contacts at a plurality of points.

12 , the lower heat exchanger 263 may include the third pipe 263.1 , the fifth port 263.3 , and the sixth port 263.4 .

In the third pipe 263.1, as described above, the refrigerant in the refrigerating cycle may be introduced therein.

The refrigerant may perform heat exchange with air around the third pipe 263.1. In an embodiment of the present invention, the refrigerant flowing through the third pipe 263.1 may cool the surrounding air according to the role performed by the lower heat exchanger 263, and the cooled air may It may be discharged to the outside through the air outlet cover 110 by the fan 210 . The role performed by the lower heat exchanger 263 may be changed according to the operation mode of the switching valve 280, which will be described later.

In addition, the cooling water cooled by the PCM module 220 may be introduced into the third pipe 263.1 as described above.

The cooling water may perform heat exchange with air around the third pipe 263.1. The cooling water flowing through the third pipe 263.1 may cool the surrounding air, and the cooled air may be discharged to the outside through the tuyere cover 110 by the upper fan 210 .

Meanwhile, the fifth port 263.3 may be disposed at one end of the third pipe 263.1 , and the sixth port 263.4 may be disposed at the other end of the third pipe 263.1 . That is, the fifth port 263.3 and the sixth port 263.4 are both ends of the third pipe 263.1, and the moving direction of the refrigerant flowing inside the third pipe 263.1 is, It can be controlled by the operating mode of 280.

Preferably, in an embodiment of the present invention, the refrigerant is introduced into the fifth port 263.3 disposed at one end of the third pipe 263.1, and the third pipe 263.1 disposed at the other end of the third pipe 263.1. The refrigerant may be discharged through the 6 port 263.4, and in an embodiment of the present invention, the refrigerant is introduced into the 6th port 263.4 disposed at the other end of the third pipe 263.1, and the third pipe The refrigerant may be discharged to the fifth port 263.3 disposed at one end of the 263.1. More preferably, the refrigerant may be introduced from the fifth port 263.3 and discharged to the sixth port 263.4 according to the operation mode of the selector valve 280 to be described later, and the selector valve ( 280), it may be introduced from the sixth port 263.4 and discharged to the fifth port 263.3.

On the other hand, the third heat exchange plate 263.2 is in the form of a plate, and the third pipe 263.1 may penetrate and contact at a plurality of points. Due to the structure in which the third heat exchange plate 263.2 and the third pipe 263.1 are in contact with each other, the third heat exchange plate 263.2 and the third pipe 263.1 can perform heat exchange by conduction with each other. there is. Preferably, the third heat exchange plate 263.2 may contact the third pipe 263.1 to conduct heat exchange by conduction between the third pipes 263.1 disposed adjacent to each other. .

In one embodiment of the present invention, the lower end of the first heat exchange plate 261.2, the second heat exchange plate 262.2 disposed at the lower end of the first heat exchange plate 261.2, and the second heat exchange plate 262.2. The third heat exchange plate 263.2 disposed on the may be disposed in contact with each other at a plurality of points to perform heat exchange by conduction.

10, 11, and 12, the first heat exchange plate 261.2 is the first pipe to perform heat exchange by conduction between the first pipes 261.1 disposed adjacent to each other. 261.1, and the second heat exchange plate 262.2 is connected to the second pipe 262.1 to conduct heat exchange by conduction between the second pipes 262.1 disposed adjacent to each other. and the third heat exchange plate 263.2 may be in contact with the third pipe 263.1 to conduct heat exchange by conduction between the third pipes 263.1 disposed adjacent to each other. . At the same time, as described above in FIG. 9 , as the upper heat exchange part 261 , the intermediate heat exchange part 262 , and the lower heat exchange part 263 are stacked on top of each other, the first heat exchange plate 261.2. The second heat exchange plate 262.2 may be disposed under the second heat exchange plate 262.2, and the third heat exchange plate 263.2 may be disposed under the second heat exchange plate 262.2.

By the structure in which the first heat exchange plate 261.2, the second heat exchange plate 262.2, and the third heat exchange plate 263.2 are arranged, the first heat exchange plate 261.2, the second heat exchange plate 262.2, and the third heat exchange plate 263.2 may perform heat exchange by mutual conduction.

13 schematically shows the third pipe 263.1 according to an embodiment of the present invention.

13(A) schematically shows the third pipe 263.1, and FIGS. 13(B) and 13(C) are the internal pipe 263.11 and the external pipe provided in the third pipe 263.1. The flow of the refrigerant and cooling water flowing through the pipe 263.12 is conceptually shown.

In one embodiment of the present invention, the lower heat exchange unit 263 includes a third pipe 263.1 through which a refrigerant and cooling water can flow therein, and the third pipe 263.1 is an internal pipe 263.11, and It has a structure of a multi-pipe pipe including an external pipe (263.12), any one of the refrigerant and cooling water can flow in the internal pipe (263.11), and the other one of the refrigerant and cooling water in the external pipe (263.12) can flow

As shown in FIG. 13 , the third pipe 263.1 may have a multi-pipe structure including the internal pipe 263.11 and the external pipe 263.12 . In one embodiment of the present invention, the refrigerant cooled by the refrigeration cycle may flow through the inner pipe 263.11, and the cooling water cooled by the PCM module 220 may flow through the external pipe 263.12. can In an embodiment of the present invention, the cooling water cooled by the PCM module 220 may flow through the inner pipe 263.11, and the refrigerant cooled by the refrigeration cycle may flow through the external pipe 263.12. can

As described above, the refrigerant that has passed through the refrigerating cycle may have a temperature below room temperature, preferably between about 8 degrees and 12 degrees, more preferably about 10 degrees. In addition, the cooling water cooled by the PCM material 222 in the PCM module 220 may be at a temperature below room temperature by the PCM material 222, which undergoes a phase change at a temperature below room temperature, preferably It may correspond to between about 16 degrees and 20 degrees, more preferably about 18 degrees.

Accordingly, in the third pipe 263.1, the refrigerant in the refrigeration cycle is introduced therein to perform heat exchange with the air around the third pipe 263.1, and the PCM material 222 therein. The cooling water cooled by . may be introduced to perform heat exchange with the air around the third pipe 263.1.

At the same time, in the third pipe 263.1, the refrigerant and the coolant flow from the inner pipe 263.11 and the external pipe 263.12 therein, so that the coolant and the coolant can exchange heat with each other. In addition, when the dual air conditioner 1 operates in the dehumidification regeneration mode to be described later, the PCM material 222 is charged (phase change from liquid to solid) through mutual heat exchange between the refrigerant and the coolant. can

As such, the lower heat exchange part 263 disposed below the first heat exchange module 260 includes the third pipe 263.1 forming a multi-tube pipe structure, so that of the first heat exchange module 260 It is possible to exhibit the effect of improving the heat exchange efficiency and the charging efficiency of the PCM material 222 . Preferably, the lower heat exchange unit 263 includes the third pipe 263.1 forming a multi-tube pipe structure, and the refrigerant and the coolant flow simultaneously in the third pipe 263.1, so that the The refrigerant and the cooling water may perform heat exchange with the surrounding air and, at the same time, perform heat exchange with each other. Through this, it is possible to exhibit the effect of increasing the heat exchange efficiency and the charging efficiency of the PCM material 222 . More preferably, the refrigerant and the cooling water perform primary heat exchange with surrounding air and secondary heat exchange with each other by the third pipe 263.1 constituting the multi-tube pipe structure, thereby improving heat exchange efficiency and the PCM The effect of improving the charging efficiency of the material 222 may be exhibited.

According to an embodiment of the present invention, the upper heat exchange unit 261 includes a first pipe 261.1 through which a refrigerant can flow; It is disposed at one end of the first pipe 261.1, and the refrigerant passing through the expansion valve 250 in the refrigeration cycle is introduced by the operation of the selector valve 280, or the refrigerant passing through the selector valve 280 is introduced. a first port 261.3 to be discharged; and the refrigerant disposed at the other end of the first pipe 261.1 and passing through the selector valve 280 is introduced, or the expansion valve 250 in the refrigeration cycle is operated by the operation of the selector valve 280. a second port 261.4 through which the last refrigerant is discharged; and the lower heat exchange unit 263 includes a third pipe 263.1 through which the refrigerant and cooling water can flow; The refrigerant disposed at one end of the third pipe 263.1 and passed through the expansion valve 250 in the refrigeration cycle is introduced by the operation of the selector valve 280, or the refrigerant that has passed through the selector valve 280 a fifth port 263.3 through which the cooling water is discharged and the cooling water passing through the circulation pump 227 disposed adjacent to the PCM module 220 is discharged; and the refrigerant disposed at the other end of the third pipe 263.1 and passing through the selector valve 280 is introduced, or the refrigerant that has passed through the expansion valve 250 in the refrigeration cycle by the operation of the selector valve 280 may be discharged, and a sixth port 263.4 through which the cooling water passing through the circulation pump 227 is introduced.

In one embodiment of the present invention, the first port 261.3 is arranged in connection with the expansion valve 250 in the refrigeration cycle, and the second port 261.4 is arranged in connection with the switching valve 280, and , the fifth port 263.3 may be disposed in connection with the expansion valve 250 in the refrigeration cycle, and the sixth port 263.4 may be disposed in connection with the switching valve 280 .

As described above, the refrigerant flowing inside the first pipe 261.1 is introduced from the first port 261.3 according to the operation mode of the selector valve 280 to be described later, and the second port 261.4. and may be discharged from the second port 261.4 and discharged through the first port 261.3 according to an operation mode of the selector valve 280 to be described later. Accordingly, depending on the operation mode of the switching valve 280 to be described later, the refrigerant introduced from the first port 261.3 may be the refrigerant discharged from the expansion valve 250 in the refrigerating cycle, and The refrigerant discharged from the second port 261.4 may be a refrigerant introduced into the switching valve 280 . In addition, depending on the operation mode of the switching valve 280 to be described later, the refrigerant discharged from the first port 261.3 may be the refrigerant introduced into the expansion valve 250 in the refrigerating cycle, and the second The refrigerant introduced from the port 261.4 may be a refrigerant discharged from the switching valve 280 .

On the other hand, as described above, the refrigerant flowing inside the third pipe 263.1 is introduced from the fifth port 263.3 according to the operation mode of the switching valve 280 to be described later to the sixth port ( 263.4), and may be drawn in from the sixth port 263.4 and discharged through the fifth port 263.3 according to an operation mode of the selector valve 280, which will be described later. Accordingly, depending on the operation mode of the switching valve 280 to be described later, the refrigerant introduced from the fifth port 263.3 may be the refrigerant discharged from the expansion valve 250 in the refrigeration cycle, and the The refrigerant discharged from the sixth port 263.4 may be a refrigerant introduced into the switching valve 280 . In addition, depending on the operation mode of the switching valve 280 to be described later, the refrigerant discharged from the fifth port 263.3 may be the refrigerant introduced into the expansion valve 250 in the refrigerating cycle, and the sixth The refrigerant introduced from the port 263.4 may be the refrigerant discharged from the switching valve 280 .

14 schematically shows a cross-section of a switching valve 280 according to an embodiment of the present invention.

As a heat exchange assembly 500 used in the dual air conditioner 1 using a phase change material according to an embodiment of the present invention, the refrigerant passing through the first condenser 240 in the refrigeration cycle is transferred to the upper heat exchange unit ( 261) or by selectively controlling the inflow into the lower heat exchanger 263, the switching valve 280 for changing the operation mode; may include.

As described above, the switching valve 280 is disposed inside the upper case 120 , and the refrigerant passing through the inside of the switching valve 280 can flow according to the operation mode of the dual air conditioner 1 . The flow path can be controlled.

According to an embodiment of the present invention, the selector valve 280 includes, as shown in FIG. 14, a selector valve body 281; a first flow path 282 provided on a lower side of the switching valve body 281; a second flow path 283 provided on the left side of the switching valve body 281; a third flow path 284 provided on the upper side of the switching valve body 281; and a fourth flow path 285 provided on the right side of the switching valve body 281 . The selector valve 280 may form a four-way valve in which the upper, lower, left, and right sides are opened, and the refrigerant introduced therein may be discharged in one of the upper, lower, left, and right directions. there is.

In one embodiment of the present invention, when the selector valve 280 is in the first operation mode, the refrigerant passing through the first condenser 240 is introduced into the lower heat exchange unit 263, and the lower heat exchange unit 263 ) controls the flow path so that the refrigerant introduced into the refrigerant can be introduced into the compressor 230 after passing through the upper heat exchange unit 261, and when the switching valve 280 is in the second operation mode, the first condenser ( 240) is introduced into the upper heat exchange unit 261, and the refrigerant introduced into the upper heat exchange unit 261 passes through the lower heat exchange unit 263 and then flows into the compressor 230. can control

14(A) conceptually illustrates a flow path formed when the selector valve 280 operates in the first operation mode.

In the first operation mode, the refrigerant that has passed through the first condenser 240 is introduced into the lower heat exchange unit 263 , and the refrigerant introduced into the lower heat exchange unit 263 passes the upper heat exchange unit 261 . Afterwards, it may be introduced into the compressor 230 .

Preferably, when the selector valve 280 operates in the first operation mode, the refrigerant passing through the first condenser 240 is introduced into the selector valve 280 and the lower heat exchange unit 263 . The refrigerant discharged to the sixth port 263.4 of the lower heat exchange unit 263 is discharged to the fifth port 263.3 of the lower heat exchange unit 263, and the expansion valve of the refrigeration cycle ( 250) and the refrigerant discharged from the expansion valve 250 is introduced into the first port 261.3 of the upper heat exchange unit 261 and the second port 261.4 of the upper heat exchange unit 261 and the refrigerant discharged from the second port 261.4 may be introduced into the switching valve 280 to be introduced into the compressor 230 .

14(B) conceptually illustrates a flow path formed when the selector valve 280 operates in the second operation mode.

In the second operation mode, the refrigerant passing through the first condenser 240 is introduced into the upper heat exchange unit 261 , and the refrigerant introduced into the upper heat exchange unit 261 passes through the lower heat exchange unit 263 . Afterwards, it may be introduced into the compressor 230 .

Preferably, when the selector valve 280 operates in the second operation mode, the refrigerant that has passed through the first condenser 240 is introduced into the selector valve 280 and the upper heat exchanger 261 . The refrigerant discharged to the second port 261.4 of the upper heat exchange unit 261 and introduced into the upper heat exchange unit 261 is discharged to the first port 261.3 of the upper heat exchange unit 261, and the expansion valve of the refrigeration cycle ( 250) and the refrigerant discharged from the expansion valve 250 is introduced into the fifth port 263.3 of the lower heat exchange unit 263 and the sixth port 263.4 of the lower heat exchange unit 263 and the refrigerant discharged from the sixth port 263.4 may be introduced into the switching valve 280 to be introduced into the compressor 230 .

In an embodiment of the present invention, when the switching valve 280 is in the first operation mode, the upper heat exchange unit 261 receives the refrigerant passing through the expansion valve 250 to perform heat exchange with the surrounding air. to serve as an evaporator, and when the selector valve 280 is in the second operation mode, the upper heat exchange unit 261 receives the refrigerant passing through the selector valve 280 and performs heat exchange with the surrounding air. 2 It serves as a condenser, and the intermediate heat exchange unit 262 is cooled inside the PCM module 220 , and the cooling water passing through the circulation pump 227 may be introduced to perform heat exchange with the surrounding air.

In one embodiment of the present invention, when the selector valve 280 is in the first operation mode, the lower heat exchange unit 263 includes the refrigerant passing through the selector valve 280 and the cooling water passing through the circulation pump 227 . Any one or more of them is introduced to serve as a second condenser by performing at least one of heat exchange with ambient air and mutual heat exchange between the refrigerant and the coolant, and when the switching valve 280 is in the second operation mode, the The lower heat exchange unit 263 serves as an evaporator by introducing the refrigerant passing through the expansion valve 250 and the cooling water passing through the circulation pump 227 and performing heat exchange with ambient air and mutual heat exchange between the refrigerant and the coolant. can do.

In this way, depending on the operation mode of the switching valve 280, the roles of the upper heat exchange unit 261 and the lower heat exchange unit 263 disposed above and below the first heat exchange module 260 may vary. It is possible to exert the effect of performing both the cooling function and the dehumidifying function through this.

Preferably, the dual air conditioner device (1) includes the heat exchange assembly (500) in which the first heat exchange module (260) and the switching valve (280) operate as one device, and the switching valve (280) The roles of the upper heat exchange unit 261 and the lower heat exchange unit 263 provided in the first heat exchange module 260 vary according to the operation mode of can be effective.

Hereinafter, an operation mode in which the dual air conditioner 1 is operated according to an embodiment of the present invention will be described in detail.

According to an embodiment of the present invention, the dual air conditioner 1 may operate in a cooling mode, and the cooling mode may include a first cooling mode in which the circulation pump 227 and the refrigerating cycle operate simultaneously; and a second cooling mode in which only the circulation pump 227 operates; in the cooling mode, the air introduced from the outside of the case 100 exchanges heat with the first heat exchange module 260 and the upper fan 210 ) may be discharged to the outside of the case 100 .

According to an embodiment of the present invention, the dual air conditioner 1 may operate in any one of a dehumidification regeneration mode and a cooling mode, and in the dehumidification regeneration mode, the air introduced from the outside of the case 100 is After exchanging heat with the heat exchange module 260 , the condensed water condensed in the first heat exchange module 260 is introduced into the drip tray 140 , and in the cooling mode, the second heat exchange module 260 is operated by the lower fan 241 . 1 Heat from the condenser 240 may be absorbed into the drip tray 140 .

As described above, the dual air conditioner 1 may operate in the cooling mode or the dehumidification regeneration mode, and the cooling mode may include the first cooling mode and the second cooling mode.

15 conceptually illustrates a movement path of a refrigerant and coolant in the first cooling mode according to an embodiment of the present invention.

As shown in FIG. 15 , when the dual air conditioner 1 operates in the first cooling mode, the circulation pump 227 and the refrigerating cycle may operate simultaneously, and cooling is performed by the refrigerant and the cooling water. can be performed.

The flow of the refrigerant may be a result of a refrigeration cycle used in a general air conditioner. The high-temperature and high-pressure refrigerant discharged from the compressor 230 flows into the first condenser 240, and the low-temperature and high-pressure refrigerant discharged from the first condenser 240 flows into the switching valve 280, and the The low-temperature and high-pressure refrigerant discharged by the first operation mode of the switching valve 280 flows into the lower heat exchange unit 263 of the first heat exchange module 260 and is discharged from the lower heat exchange unit 263 . The low-temperature and high-pressure refrigerant is introduced into the expansion valve 250 , and the low-temperature and low-pressure refrigerant discharged from the expansion valve 250 is introduced into the upper heat exchange unit 261 of the first heat exchange module 260 , After , the refrigerant discharged from the upper heat exchange unit 261 may be introduced into the compressor 230 again. In this case, the lower heat exchange unit 263 may perform the role of the second condenser, thereby condensing the low-temperature and high-pressure refrigerant discharged from the first condenser 240 secondarily, and the upper heat exchange unit 261 . By performing the role of an evaporator, the low-temperature and low-pressure refrigerant discharged from the expansion valve 250 and the air introduced from the outside of the case 100 perform heat exchange, and thereafter, the case 100 by the upper fan 210 can be discharged outside.

Also, as described above, the dual air conditioner 1 according to an embodiment of the present invention may include the lower fan 241 disposed adjacent to the first condenser 240 . By the operation of the lower fan 241 , the heat of the first condenser 240 that may be generated when the first condenser 240 condenses the refrigerant may be absorbed into the drip tray 140 . Preferably, in the first cooling mode, some of the air introduced from the outside of the case 100 performs heat exchange with the first heat exchange module 260 and the upper fan 210 makes the case 100 outside. The remainder of the air introduced from the outside of the case 100 performs heat exchange with the first condenser 240 so that the heat of the first condenser 240 is absorbed into the drip tray 140 . can At the same time, the heat may be discharged to the condensation heat discharge unit 160 disposed at the lower end of the lower case 130 and the rear surface of the drip tray 140 by the lower fan 241 . As described above, in the present invention, the first condenser 240 is not provided as a separate outdoor unit, but is disposed inside the case 100 and heat generated by the first condenser 240 is removed from the inside. As a structure that can compensate, it is possible to exhibit the effect of realizing an air conditioner without installing a separate outdoor unit.

In addition, as described above, the dual air conditioner 1 according to an embodiment of the present invention includes the second heat exchange module 270 disposed between the compressor 230 and the first condenser 240 . can do. Accordingly, when the dual air conditioner 1 operates in the first cooling mode, the condensed water condensed in the first heat exchange module 260 and the refrigerant discharged from the compressor 230 are transferred to the second heat exchange module 270 may be introduced into the interior to perform mutual heat exchange inside. Preferably, a pipe disposed inside the second heat exchange module 270 forms the structure of the multi-tube pipe, and the condensed water and the refrigerant flowing through the multi-tube pipe can perform mutual heat exchange, heat exchange efficiency can have the effect of improving

Meanwhile, the flow of the cooling water may be made by the circulation pump 227 . The cooling water discharged from the PCM module 220 flows into the cooling water tank 226 , and the cooling water discharged from the cooling water tank 226 flows into the circulation pump 227 , and in the circulation pump 227 . The cooling water discharged is introduced into the lower heat exchange unit 263 of the first heat exchange module 260, and the cooling water discharged from the lower heat exchange unit 263 is introduced into the intermediate heat exchange unit 262, and then The cooling water discharged from the intermediate heat exchanger 262 may be introduced into the PCM module 220 again. In this case, the air introduced from the outside of the case 100 may perform heat exchange with the cooling water and then be discharged back to the outside of the case 100 by the upper fan 210 .

In this way, when the dual air conditioner 1 operates in the first cooling mode, the circulation pump 227 and the refrigeration cycle may operate simultaneously, and the air introduced from the outside of the case 100 is The cooling environment can be provided to the user by being cooled through heat exchange with the refrigerant and the cooling water and discharged to the outside of the case 100 .

16 conceptually illustrates a movement path of cooling water in the second cooling mode according to an embodiment of the present invention.

As shown in FIG. 16 , when the dual air conditioner 1 operates in the second cooling mode, only the circulation pump 227 may operate, and cooling may be performed by cooling water.

The flow of the cooling water may be made by the circulation pump 227, as described above. The cooling water discharged from the PCM module 220 flows into the cooling water tank 226 , and the cooling water discharged from the cooling water tank 226 flows into the circulation pump 227 , and in the circulation pump 227 . The cooling water discharged is introduced into the lower heat exchange unit 263 of the first heat exchange module 260, and the cooling water discharged from the lower heat exchange unit 263 is introduced into the intermediate heat exchange unit 262, and then The cooling water discharged from the intermediate heat exchanger 262 may be introduced into the PCM module 220 again. In this case, the air introduced from the outside of the case 100 may perform heat exchange with the cooling water and then be discharged back to the outside of the case 100 by the upper fan 210 .

As such, when the dual air conditioner 1 operates in the second cooling mode, only the circulation pump 227 can operate, and the air introduced from the outside of the case 100 performs heat exchange with the cooling water. It is cooled through and discharged to the outside of the case 100, thereby providing a cooling environment to the user.

17 is a conceptual diagram illustrating a movement path of a refrigerant and coolant in the dehumidification regeneration mode according to an embodiment of the present invention.

As shown in FIG. 17 , when the dual air conditioner 1 operates in the dehumidification regeneration mode, the circulation pump 227 and the refrigerating cycle may operate simultaneously, and dehumidification is performed by refrigerant and cooling water. can be

The flow of the refrigerant may be a result of a refrigeration cycle used in a general air conditioner, as described above. The high-temperature and high-pressure refrigerant discharged from the compressor 230 flows into the first condenser 240, and the low-temperature and high-pressure refrigerant discharged from the first condenser 240 flows into the switching valve 280, and the The low-temperature and high-pressure refrigerant discharged by the second operation mode of the switching valve 280 flows into the upper heat exchange unit 261 of the first heat exchange module 260 and is discharged from the upper heat exchange unit 261 . The low-temperature, high-pressure refrigerant is introduced into the expansion valve 250 , and the low-temperature and low-pressure refrigerant discharged from the expansion valve 250 is introduced into the lower heat exchange unit 263 of the first heat exchange module 260 , , the refrigerant discharged from the lower heat exchange unit 263 may be introduced into the compressor 230 again. In this case, the upper heat exchange part 261 can perform the role of the second condenser, so that the low-temperature and high-pressure refrigerant discharged from the first condenser 240 can be condensed secondarily, and the lower heat exchange part 263 . By performing the role of an evaporator, the air introduced from the outside of the case 100 exchanges heat with the low-temperature and low-pressure refrigerant discharged from the expansion valve 250, and thereafter, by the upper fan 210, the case 100 can be discharged outside.

In addition, in an embodiment of the present invention, when the dual air conditioner 1 operates in the dehumidification regeneration mode, the lower fan 241 does not operate, thereby reducing the phase change of the PCM material 222 . can be further promoted. Preferably, in the dehumidification regeneration mode, the PCM material 222 may reach a phase change temperature to regenerate the PCM material 222 or a phase change to a solid may occur, and the lower fan 241 may By not operating, the phase change efficiency of the PCM material 222 may be improved.

In addition, as described above, the dual air conditioner 1 according to an embodiment of the present invention includes the second heat exchange module 270 disposed between the compressor 230 and the first condenser 240 . can do. Accordingly, when the dual air conditioner 1 operates in the first cooling mode, the condensed water condensed in the first heat exchange module 260 and the refrigerant discharged from the compressor 230 are transferred to the second heat exchange module 270 may be introduced into the interior, and the condensed water and the refrigerant may exchange heat with each other. Preferably, a pipe disposed inside the second heat exchange module 270 forms the structure of the multi-tube pipe, and the condensed water and the refrigerant flowing through the multi-tube pipe can perform mutual heat exchange, heat exchange efficiency can have the effect of improving

In addition, the air introduced from the outside of the case 100 exchanges heat with the first heat exchange module 260 , and the condensed water condensed in the first heat exchange module 260 may be introduced into the drip tray 140 . there is. Details on this will be described later with reference to FIG. 18 .

Meanwhile, the flow of the cooling water may be made by the circulation pump 227 . The cooling water discharged from the PCM module 220 flows into the cooling water tank 226 , and the cooling water discharged from the cooling water tank 226 flows into the circulation pump 227 , and in the circulation pump 227 . The cooling water discharged is introduced into the lower heat exchange unit 263 of the first heat exchange module 260, and the cooling water discharged from the lower heat exchange unit 263 is introduced into the intermediate heat exchange unit 262, and then The cooling water discharged from the intermediate heat exchanger 262 may be introduced into the PCM module 220 again. In this case, the cooling water and the air introduced from the outside of the case 100 may perform heat exchange and then be discharged to the outside of the case 100 by the upper fan 210 .

In this way, when the dual air conditioner 1 operates in the dehumidification regeneration mode, the circulation pump 227 and the refrigeration cycle can operate simultaneously, and the air introduced from the outside of the case 100 is discharged from the refrigerant. And by being discharged to the outside of the case 100 through heat exchange with the cooling water, a dehumidifying environment can be provided to the user.

18 conceptually illustrates a movement path of the condensed water according to an embodiment of the present invention.

As described above, according to an embodiment of the present invention, the dual air conditioner 1 is disposed below the first heat exchange module 260 , and external air is introduced from the suction port 150 , and is made of a porous material. The evaporation module 290 having a hollow cylindrical structure formed of a; further comprising, the condensed water condensed in the first heat exchange module 260 is sprayed into the evaporation module 290 and introduced from the suction port 150 while vaporizing The temperature of the outside air may be lowered primarily.

As shown in FIG. 18 , the condensed water condensed in the first heat exchange module 260 is stored in the condensed water storage unit 264 , and a part of the condensed water is sprayed into the evaporation module 290 and vaporized. and, after the remainder of the condensed water is discharged to the second heat exchange module 270 without being vaporized, heat exchange with the refrigerant discharged from the compressor 230 is performed inside the second heat exchange module 270, and the The remainder of the condensed water discharged from the second heat exchange module 270 may be introduced into the drip tray 140 . In this case, the condensed water stored in the condensed water storage unit 264 may be sprayed on the fan through a hose or the like, and then the fan is rotated by a flow of air or a motor to be inside the evaporation module 290 . Water droplets may form, and the temperature of the air supplied from the outside may be lowered by vaporization of the water droplets.

19 conceptually illustrates an air flow inside the dual air conditioner 1 according to an embodiment of the present invention.

As shown in FIG. 19 , when the dual air conditioner 1 operates, the air introduced into the case 100 through the suction port 150 passes through the air cleaning filter 300 to the evaporation module. 290 , and may be discharged to the outside of the case 100 through the air outlet cover 110 through the first heat exchange module 260 by the operation of the upper fan 210 . In such a flow, the air may be primarily cooled inside the evaporation module 290 , and may be secondarily cooled in the first heat exchange module 260 , and then the upper fan 210 is cooled. through the case 100 may be discharged to the outside.

The dual air conditioner 1 may operate in the cooling mode, and when the dual air conditioner 1 operates in the cooling mode, the circulation pump 227 and the refrigerating cycle operate simultaneously and the switching The valve 280 may operate in the first cooling mode in which the first operation mode operates, and in the second cooling mode in which only the circulation pump 227 operates. In the first cooling mode, a part of the air introduced from the outside of the case 100 performs heat exchange with the refrigerant and the condensed water inside the second heat exchange module 270 , and together with the heat of the first condenser 240 . It may be discharged to the drip tray 140 through the lower fan 241.

Meanwhile, the dual air conditioner 1 may operate in the dehumidification regeneration mode in which the circulation pump 227 and the refrigeration cycle operate simultaneously and the selector valve 280 operates in the second operation mode. The lower fan 241 may not operate in the dehumidification regeneration mode.

Preferably, the dual air conditioner 1 may operate in the cooling mode and the dehumidification regeneration mode, and when the dual air conditioner 1 operates in the cooling mode, the circulation pump 227 and the By operating in the first cooling mode in which the refrigeration cycle operates simultaneously and the selector valve 280 operates in the first operation mode, and the second cooling mode in which only the circulation pump 227 operates, the suction port 150 ), the air introduced into the case 100 is primarily cooled inside the evaporation module 290 , and is secondarily cooled in the first heat exchange module 260 through the upper fan 210 . It may be discharged to the outside of the case 100 . In addition, when the dual air conditioner 1 operates in the dehumidification regeneration mode, the circulation pump 227 and the refrigeration cycle operate simultaneously and the selector valve 280 operates in the second operation mode, so that the suction port The air introduced into the case 100 through 150 passes through the evaporation module 290 and the first heat exchange module 260 and is discharged to the outside of the case 100 through the upper fan 210 It can reduce the humidity of the surrounding air.

Through this, as the dual air conditioner device 1 arranges the air cleaning filter 300 inside, and the air cleaning filter 300 arranges the evaporation module 290 therein, the air as a device It can exhibit the effect of performing both a cleaning function and a cooling function. In addition, the dual air conditioner apparatus 1 includes the heat exchange assembly 500 in which the first heat exchange module 260 and the selector valve 280 operate as one device, and the operation of the selector valve 280 By varying the roles of the upper heat exchange unit 261 and the lower heat exchange unit 263 provided in the first heat exchange module 260 according to the mode, both the cooling function and the dehumidifying function can be performed as a single device. can have an effect.

20 is a conceptual diagram illustrating an internal temperature gradient of the first heat exchange module 260 when the dual air conditioner 1 is in the first cooling mode according to an embodiment of the present invention. 20(A) shows a state in which the first heat exchange module 260 is rotated by 90 degrees, and FIG. 20(B) shows a temperature graph inside each heat exchange unit of the first heat exchange module 260. As shown in FIG.

As described above, when the dual air conditioner 1 operates in the first cooling mode, the refrigerant from the refrigeration cycle is transferred to the first heat exchange module by the switching valve 280 operating in the first operation mode. By introducing into the lower heat exchange part 263 of 260 , the lower heat exchange part 263 can serve as the second condenser, and the upper heat exchange part 261 of the first heat exchange module 260 . ), the upper heat exchanger 261 may serve as the evaporator.

Accordingly, when the upper fan 210 operates in the first cooling mode, the air inside the dual air conditioner 1 exchanges heat with the lower heat exchanger 263 and the intermediate heat exchanger 262 ) and heat exchange, and then heat exchange with the upper heat exchange unit 261 may be performed. In one embodiment of the present invention, when the temperature of the lower end of the first heat exchange module 260 is 30 degrees, the temperature of the refrigerant flowing through the lower heat exchange part 263 corresponds to 30 degrees Celsius, and the PCM material 222 ), the temperature of the coolant flowing through the lower heat exchange part 263 and the intermediate heat exchange part 262 corresponds to 18 degrees Celsius, and the temperature of the refrigerant by the refrigeration cycle is In the case of 10 degrees Celsius, the temperature of the refrigerant flowing through the upper heat exchanger 261 may correspond to 10 degrees Celsius.

21 conceptually illustrates a temperature gradient inside the first heat exchange module 260 when the dual air conditioner 1 is in the dehumidification regeneration mode according to an embodiment of the present invention. 21 (A) shows a state in which the first heat exchange module 260 is rotated by 90 degrees, and FIG. 21 (B) shows a temperature graph inside each heat exchange unit of the first heat exchange module 260 .

As described above, when the dual air conditioner 1 operates in the dehumidification regeneration mode, the refrigerant from the refrigeration cycle is transferred to the first heat exchange module ( 260), the upper heat exchange part 261 can serve as the second condenser, and the lower heat exchange part 263 of the first heat exchange module 260. By introducing into the furnace, the lower heat exchanger 263 may serve as the evaporator.

In an embodiment of the present invention, when the temperature of the upper end of the first heat exchange module 260 is 30 degrees, the temperature of the refrigerant flowing through the upper heat exchange part 261 corresponds to 30 degrees Celsius, and the PCM material 222 ), the temperature of the coolant flowing through the lower heat exchange part 263 and the intermediate heat exchange part 262 corresponds to 18 degrees Celsius, and the temperature of the refrigerant by the refrigeration cycle is In the case of 10 degrees Celsius, the temperature of the refrigerant flowing through the lower heat exchanger 263 may correspond to 10 degrees Celsius. That is, the lower heat exchange part 263 has a temperature (for example, 10 degrees Celsius) lower than the phase change temperature (for example, 18 degrees Celsius) of the PCM material 222, and the intermediate heat exchange part 262 has a phase change temperature of the PCM material 222 .

In an embodiment of the present invention, when the dual air conditioner 1 operates in the dehumidification regeneration mode, air may be primarily cooled rapidly in the lower heat exchange unit 263, and the lower heat exchange unit ( 263), the intermediate heat exchange unit 262 may also be cooled by the air rapidly cooled. As a result, the PCM material 222 inside the PCM module 220 is cooled by the cooling water cooled in the intermediate heat exchange unit 262, that is, a phase change to a solid state occurs while the PCM material 222 is cooled. This can be played.

In addition, in an embodiment of the present invention, as air passes through the intermediate heat exchange unit 262 , water vapor contained in the air is condensed outside the intermediate heat exchange unit 262 , and the condensed water vapor is the condensed water It may be stored in the storage unit 264 . The water vapor stored in the condensed water storage unit 264 may be sprayed onto the fan during the cooling mode operation. At this time, the intermediate heat exchange part 262 and the lower heat exchange part 263 perform heat exchange by conduction by the second heat exchange plate 262.2 and the third heat exchange plate 263.2, so that the lower heat exchange part The intermediate heat exchange unit 262 may be cooled by the air rapidly cooled in step 263 , thereby inducing regeneration of the PCM material 222 or a phase change into a solid.

As a result, when the dual air conditioner 1 operates in the dehumidification regeneration mode, it not only dehumidifies the outside air but also phase-changes the PCM material 222 in a liquid state to a solid state, so that the PCM material in a solid state (222) can be charged. Through this, it is possible to minimize the inconvenience of periodically replenishing the PCM material 222 . Preferably, when the dual air conditioner 1 is operated in the dehumidification regeneration mode, the PCM material 222 is phase-changed and charged at the same time as the external air is dehumidified, so that the PCM material 222 needs to be periodically replenished. It can have the effect of minimizing the cost of maintenance and saving maintenance costs.

Hereinafter, a method of controlling the dual air conditioner 1 according to an embodiment of the present invention will be described in detail.

22 schematically shows control elements of the controller 400 according to an embodiment of the present invention, and FIG. 23 schematically shows operating elements of the dual air conditioner 1 according to an embodiment of the present invention.

As described above, according to an embodiment of the present invention, the dual air conditioner 1 includes a control unit 400 that controls operations of components of the dual air conditioner 1 in response to a user's manipulation; may include more.

According to an embodiment of the present invention, there is provided a control method of a dual air conditioner (1) using a phase change material, the dual air conditioner (1) comprising: an upper fan (210) for discharging air cooled from the inside to the outside; A PCM case 223, a PCM material 222 disposed inside the PCM case 223, and a PCM internal pipe 221 capable of performing heat exchange with the PCM material 222, and a cooling water flowing therein. PCM module 220; a circulation pump 227 for circulating the cooling water flowing through the PCM internal pipe 221; a compressor 230 , a first condenser 240 , and an expansion valve 250 for implementing a refrigeration cycle using a refrigerant; an upper heat exchange unit 261 through which the refrigerant is introduced to exchange heat with surrounding air; an intermediate heat exchange part 262 located below the upper heat exchange part 261, the cooling water being introduced to perform heat exchange with surrounding air; It is located below the intermediate heat exchange unit 262, the refrigerant and the cooling water are introduced to perform heat exchange with surrounding air, and a lower heat exchange unit 263 capable of performing mutual heat exchange between the refrigerant and the cooling water; includes; a first heat exchange module 260; and a switching valve 280 for switching the flow of the refrigerant that has passed through the first condenser 240. Cooling in which the dual air conditioner 1 cools the surrounding air according to the operation of the switching valve 280 mode, or it can operate in a dehumidifying regeneration mode that lowers the humidity of the surrounding air.

In one embodiment of the present invention, in the control method of the dual air conditioner (1), when the dual air conditioner (1) is operated in the cooling mode, the switching valve (280), the first condenser (240) ), the refrigerant is introduced into the lower heat exchange unit 263, and the refrigerant introduced into the lower heat exchange unit 263 passes through the upper heat exchange unit 261, and then the flow path is controlled so that the refrigerant is introduced into the compressor 230, and , when the dual air conditioner 1 operates in the dehumidification regeneration mode, the switching valve 280 allows the refrigerant that has passed through the first condenser 240 to be introduced into the upper heat exchange unit 261, and the upper heat exchange The flow path may be controlled so that the refrigerant introduced into the unit 261 is introduced into the compressor 230 after passing through the lower heat exchange unit 263 .

In one embodiment of the present invention, in the method of controlling the dual air conditioner 1 , when the dual air conditioner 1 operates in the cooling mode, the upper heat exchange unit 261 includes the expansion valve 250 . ), the refrigerant is introduced and acts as an evaporator by performing heat exchange with the surrounding air, and when the dual air conditioner 1 operates in the dehumidification regeneration mode, the upper heat exchange unit 261, the switching valve 280 ), the refrigerant is introduced and heat exchanges with the surrounding air, thereby serving as a second condenser.

In one embodiment of the present invention, in the control method of the dual air conditioner 1 , when the dual air conditioner 1 operates in the cooling mode, the lower heat exchange unit 263 includes the switching valve 280 . ), at least one of the refrigerant passing through the circulation pump 227 and the cooling water passing through the circulation pump 227 is introduced and serves as a second condenser by performing at least one of heat exchange with ambient air and mutual heat exchange between the refrigerant and the cooling water, and When the dual air conditioner operates in the dehumidification regeneration mode, the lower heat exchanger 263 receives the refrigerant passing through the expansion valve 250 and the coolant passing through the circulation pump 227 to conduct heat exchange with ambient air and the It may serve as an evaporator by performing mutual heat exchange between the refrigerant and the cooling water.

In an embodiment of the present invention, in the control method of the dual air conditioner (1), the lower heat exchange unit (263) includes a third pipe (263.1) through which refrigerant and cooling water can flow; The third pipe 263.1 has a structure of a multi-pipe pipe including an internal pipe 263.11 and an external pipe 263.12, and when the dual air conditioner 1 operates in the dehumidification regeneration mode, the internal pipe At 263.11, any one of the refrigerant and the cooling water flows, and the other one of the refrigerant and the cooling water flows through the external pipe 263.12, so that the refrigerant and the cooling water can exchange heat.

In the control method of the dual air conditioner (1) according to an embodiment of the present invention, the cooling mode may include: a first cooling mode in which the circulation pump (227) and the refrigerating cycle are simultaneously operated; and a second cooling mode in which only the circulation pump 227 operates.

In the control method of the dual air conditioner 1 according to an embodiment of the present invention, the dual air conditioner 1 may operate in a first cooling mode in which cooling is performed by a refrigerant and cooling water, and the In the first cooling mode, the upper fan 210 , the circulation pump 227 , the compressor 230 , and the lower fan 241 are turned on, and the switching valve 280 operates the first condenser 240 . ), the refrigerant is controlled to be introduced into the lower heat exchange unit 263 , and the cooling water and the refrigerant may circulate inside the dual air conditioner 1 .

In the control method of the dual air conditioner 1 according to an embodiment of the present invention, the dual air conditioner 1 may operate in a second cooling mode in which cooling is performed by cooling water, and the second In the cooling mode, the upper fan 210 and the circulation pump 227 are turned on, and cooling water may circulate inside the dual air conditioner 1 .

In the control method of the dual air conditioner 1 according to an embodiment of the present invention, the dual air conditioner 1 may operate in a dehumidification regeneration mode by using a refrigerant and cooling water, and in the dehumidification regeneration mode, the The upper fan 210 , the compressor 230 , and the circulation pump 227 are turned on, and the switching valve 280 allows the refrigerant that has passed through the first condenser 240 to flow to the upper heat exchange unit 261 . controlled to be drawn in, the cooling water and the refrigerant circulate inside the dual air conditioner 1, and the cooling water is cooled by the refrigerant in the lower heat exchange unit 263 and the PCM material 222 is charged. can

In the control method of the dual air conditioner (1) according to an embodiment of the present invention, the dual air conditioner (1) includes a drip tray (140) capable of storing the water condensed in the first heat exchange module (260). ); and a lower fan 241 disposed adjacent to the first condenser 240; in the cooling mode, the lower fan 241 is turned on, and the heat of the first condenser 240 is The water stored in the drip tray 140 is absorbed, and in the dehumidification regeneration mode, the lower fan 241 may be turned off.

As shown in FIG. 22 , the controller 400 may control the operation of the components of the dual air conditioner 1 in response to a user's manipulation. Preferably, the control unit 400 includes the upper fan 210, the circulation pump 227, the compressor 230, the lower fan 241, the switching valve 280, and a display panel and the like.

In addition, as shown in FIG. 23 , in the control method of the dual air conditioner 1 , the dual air conditioner 1 may be operated separately in the cooling mode and the dehumidification regeneration mode, and the cooling The mode may be divided into the first cooling mode and the second cooling mode.

In the first cooling mode, the PCM module 220 and the refrigeration cycle may be driven, and the control unit 400 includes the upper fan 210 , the circulation pump 227 , the compressor 230 , and The lower fan 241 may be controlled to operate, and the selector valve 280 may be controlled to operate in the first operation mode. At this time, as the lower fan 241 operates, the heat of the first condenser 240 may be absorbed into the water stored in the drip tray 140 .

Preferably, when the dual air conditioner 1 operates in the first cooling mode in which the circulation pump 227 and the refrigeration cycle operate simultaneously, the control unit 400 controls the upper fan 210, The circulation pump 227 , the compressor 230 , and the lower fan 241 may be operated by being turned ON, and the selector valve 280 may be operated in the first operation mode. Accordingly, the dual air conditioner 1 may operate in the first cooling mode in which cooling is performed by circulation of refrigerant and cooling water, and the switching valve 280 is the refrigerant that has passed through the first condenser 240 . may operate in the first operation mode that can be controlled to be introduced into the lower heat exchanger 263 .

Meanwhile, in the second cooling mode, the PCM module 220 may be driven, and the control unit 400 may control the upper fan 210 and the circulation pump 227 to operate, and the The compressor 230 and the lower fan 241 may be controlled not to operate. In the second cooling mode, the cooling water cooled by the PCM module 220 does not pass through the selector valve 280 , so that the controller 400 does not control the selector valve 280 .

Preferably, when the dual air conditioner 1 operates in the second cooling mode in which only the circulation pump 227 operates, the control unit 400 controls the upper fan 210 and the circulation pump ( 227) can be turned ON to operate. Accordingly, the dual air conditioner 1 may operate in the second cooling mode in which cooling is performed by the cooling water.

Meanwhile, in the dehumidification regeneration mode, the PCM module 220 and the refrigeration cycle may be driven, and the control unit 400 controls the upper fan 210 , the circulation pump 227 , and the compressor 230 . may be controlled to operate, the lower fan 241 may be controlled not to operate, and the selector valve 280 may be controlled to operate in the second operation mode. At this time, by not operating the lower fan 241 , a phase change or charging of the PCM material 222 induced in the lower heat exchange unit 263 may be promoted.

Preferably, when the dual air conditioner 1 operates in the dehumidification regeneration mode in which the circulation pump 227 and the refrigeration cycle operate simultaneously, the control unit 400 controls the upper fan 210 and the The circulation pump 227 and the compressor 230 may be controlled to be turned ON, and the switching valve 280 may be operated in the second operation mode. Accordingly, the dual air conditioner 1 can operate in the dehumidification regeneration mode capable of lowering the surrounding humidity by circulation of the refrigerant and the cooling water, and the switching valve 280 operates the first condenser 240 . It can operate in the second operation mode in which the past refrigerant can be controlled to be introduced into the upper heat exchange unit 261, and the cooling water is cooled by the refrigerant in the lower heat exchange unit 263, so that the PCM material ( 222) can be charged.

As described above, although the embodiments have been described with reference to the limited embodiments and drawings, various modifications and variations are possible by those skilled in the art from the above description. For example, the described techniques are performed in a different order than the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents, suitable results may be achieved. Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims

A dual air conditioner using a phase change material, comprising:

an upper fan for discharging the air cooled inside the dual air conditioner to the outside;

a PCM module including a PCM case, a PCM material disposed inside the PCM case, and a PCM internal pipe capable of performing heat exchange with the PCM material, and a cooling water flowing therein;

a circulation pump for circulating the cooling water flowing through the PCM internal pipe;

a compressor, a first condenser, and an expansion valve implementing a refrigeration cycle using a refrigerant;

an upper heat exchange unit to which the refrigerant is introduced to exchange heat with surrounding air; an intermediate heat exchange unit located below the upper heat exchange unit, the cooling water being introduced to perform heat exchange with surrounding air; a first heat exchange module including; a lower heat exchange part located below the intermediate heat exchange part, the refrigerant and the cooling water are introduced to perform heat exchange with surrounding air, and the refrigerant and the cooling water exchange heat with each other; and

and a switching valve for changing the operation mode by selectively controlling that the refrigerant passing through the first condenser is introduced into the upper heat exchange unit or the lower heat exchange unit is introduced.

When the dual air conditioner operates in the cooling mode, the temperature of the air introduced from the outside is lowered by the first heat exchange module, and the dual air conditioner can be discharged to the outside by the upper fan.
The method according to claim 1,

The dual air conditioner is

It further includes; an evaporation module disposed below the first heat exchange module, the external air is introduced from the suction port, and has a hollow cylindrical structure formed of a porous material;

A dual air conditioner, wherein the temperature of the external air introduced from the suction port is primarily lowered while the condensed water condensed in the first heat exchange module is sprayed into the evaporation module and vaporized.
The method according to claim 1,

The dual air conditioner is

The air purifying filter surrounding the evaporation module disposed below the first heat exchange module and having a hollow cylindrical structure; further comprising, a dual air conditioner device.
The method according to claim 1,

When the selector valve is in the first operation mode, the refrigerant passing through the first condenser is introduced into the lower heat exchange unit, and the refrigerant introduced into the lower heat exchange unit is introduced into the compressor after passing through the upper heat exchange unit,

When the selector valve is in the second operation mode, the refrigerant passing through the first condenser is introduced into the upper heat exchange unit, and the refrigerant introduced into the upper heat exchange unit is introduced into the compressor after passing through the lower heat exchange unit.
The method according to claim 1,

When the switching valve is in the first operation mode, the upper heat exchange unit serves as an evaporator by introducing the refrigerant passing through the expansion valve and performing heat exchange with the surrounding air,

When the selector valve is in the second operation mode, the upper heat exchanger serves as a second condenser by introducing the refrigerant passing through the selector valve and performing heat exchange with the surrounding air,

The intermediate heat exchange unit,

A dual air conditioner that is cooled inside the PCM module and the coolant that has passed through the circulation pump is introduced to perform heat exchange with surrounding air.
The method according to claim 1,

When the selector valve is in the first operation mode, the lower heat exchange unit, at least one of the refrigerant passing through the selector valve and the cooling water passing through the circulation pump is introduced to exchange heat with ambient air and mutual heat exchange between the refrigerant and the cooling water Acts as a second condenser by performing any one or more of

When the switching valve is in the second operation mode, the lower heat exchange unit is configured to introduce the refrigerant that has passed through the expansion valve and the cooling water that has passed through the circulation pump to perform heat exchange with ambient air and mutual heat exchange between the refrigerant and the cooling water. Dual air conditioning units that do the job.
The method according to claim 1,

The lower heat exchange unit includes a third pipe through which refrigerant and cooling water can flow abnormally;

The third pipe has a structure of a multi-pipe pipe including an internal pipe and an external pipe,

Any one of the refrigerant and the cooling water may flow through the inner pipe, and the other one of the refrigerant and the cooling water may flow through the external pipe.
The method according to claim 1,

The dual air conditioner is

A second heat exchange module disposed between the compressor and the first condenser and including a multi-tube pipe therein; further comprising,

The condensed water condensed in the first heat exchange module and the refrigerant discharged from the compressor are introduced into the multi-tube pipe inside the second heat exchange module, so that the condensed water and the refrigerant can exchange heat with each other.
The method according to claim 1,

The dual air conditioner may operate in a cooling mode,

The cooling mode is

a first cooling mode in which the circulation pump and the refrigerating cycle operate simultaneously; and

Including; a second cooling mode in which only the circulation pump operates;

In the cooling mode, the air introduced from the outside of the case exchanges heat with the first heat exchange module and is discharged to the outside of the case by the upper fan.
The method according to claim 1,

The dual air conditioner may include: a drip tray capable of storing water condensed in the first heat exchange module; and

Further comprising; a lower fan disposed adjacent to the first condenser,

The dual air conditioner may operate in any one of a dehumidification regeneration mode and a cooling mode,

In the dehumidification regeneration mode, the air introduced from the outside of the case exchanges heat with the first heat exchange module, and the condensed water condensed in the first heat exchange module is introduced into the drip tray,

In the cooling mode, the heat of the first condenser is absorbed into the drip tray by the operation of the lower fan.