Patent Publication Number: US-10775059-B2

Title: Air conditioning capable of controlling ventilation and humidity, and control method therefor

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a national stage of International Application No. PCT/KR2016/013144, filed Nov. 15, 2016, which claims the benefit of Korean Application No. 10-2015-0162003, filed Nov. 18, 2015, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein in their entireties by reference. 
     TECHNICAL FIELD 
     The present invention relates to an air conditioner configured to perform ventilation and humidity control, and more specifically, to an air conditioner configured to ventilate an indoor area and control indoor humidity. 
     BACKGROUND ART 
     Generally, an air conditioner is an apparatus configured to perform a cooling or heating cycle by cooling or heating indoor air according to user need. 
     Recently, technologies in which various functions such as dehumidification, humidification, air purification, and the like are added to an air conditioner to maintain comfortable indoor air according to change in season and user selection have been developed. 
     Such an air conditioner uses a refrigerant for cooling and dehumidification functions, and is recognized as a primary cause of ozone layer destruction and global warming due to leakage of the refrigerant. In consideration of problems of using such a refrigerant, energy ventilation apparatuses configured to reduce a ventilation load by transmitting sensible and latent heat between indoor air to be discharged and outdoor air to be introduced have been developed. 
     However, the conventional air conditioner has a collection rate of latent heat significantly lower than that of sensible heat. Therefore, there is a problem in that it is possible for the conventional air conditioner to not correspond to an increase in a cooling load. In consideration of the problems of such an energy air conditioner, a regenerative evaporative cooling technology has been developed. 
     The regenerative evaporative cooling technology decreases a temperature of air using water evaporation and cooling effects, and since the regenerative evaporative cooling technology does not use a refrigerant except water, problems of the conventional air conditioner may be solved, and thus there is an advantage in that a cooling load may be significantly reduced. 
     Such an evaporative cooler includes a configuration in which a wet channel and a dry channel are repeatedly formed and which exchanges heat through evaporation in the wet channel and supplies cooled air to an indoor area through the dry channel. 
     A conventional technology including the evaporative cooler was disclosed in Korean Patent Registration No. 10-1055668 (Core module for regenerative evaporative cooler and method for fabricating the same). 
     In addition, technologies combined with a cooling cycle technology for cycling a refrigerant have been developed to improve a cooling effect of the conventional evaporative cooler. 
     One example of such a conventional technology was disclosed in Korean Patent Registration No. 10-0947616 (Air conditioner). Although an air conditioner disclosed in Korean Patent Registration No. 10-0947616 has an advantage in that dehumidification and cooling are performed simultaneously, there is a problem in that indoor air is excessively dry when a dehumidifying and cooling operation is performed for a long time. 
     In addition, there is a problem in that a structure thereof becomes too complex when cooling, heating, ventilating, and humidity adjusting functions are all included in one air conditioner. 
     Technical Problem 
     The present invention is directed to providing an air conditioner capable of indoor ventilation and humidity adjustment using a simple structure, and a method of controlling the same. 
     Technical Solution 
     To attain the above described object, an air conditioner of the present disclosure comprises a first air flow path ( 111 ,  113 ,  115 ) provided to communicate with an indoor area; a second air flow path ( 310 ) provided to communicate with an outdoor area; a dehumidifying rotor ( 200 ) including a first region ( 210 ) provided along the first air flow path ( 111 ,  113 ,  115 ), a second region ( 220 ) provided along the second air flow path ( 310 ), and an adsorbing material which alternately passes through the first region ( 210 ) and the second region ( 220 ) according to rotation of the dehumidifying rotor ( 200 ) and adsorbs moisture in the first region ( 210 ) or the second region ( 220 ); and a control unit ( 10 ) configured to control indoor air introduced through the first air flow path ( 111 ,  113 ,  115 ) so that the indoor air is discharged to the outdoor area through the second air flow path ( 310 ) and the second region ( 220 ) and control air introduced from the outdoor area so that the introduced air flows into the indoor area through the first air flow path ( 115 ) and the first region ( 210 ) during a ventilation mode. 
     When a humidification mode for humidifying the indoor area is set at the control unit ( 10 ) and the air conditioner is operated in the humidification mode, moisture is supplied to air flowing toward the second region ( 220 ) by a moisture supplier ( 153 ), and the moisture of the air passing through the second region ( 220 ) flows to the first region ( 210 ) by rotation of the dehumidifying rotor ( 200 ), is evaporated in the first region ( 210 ), and humidifies the indoor area. 
     The first air flow path ( 111 ,  113 ,  115 ) may include a first inlet flow path ( 111 ,  113 ) configured to connect an inlet through which air in the indoor area is introduced and an inlet end of the first region ( 210 ), and first outlet flow path ( 115 ) configured to connect an outlet end of the first region ( 210 ) and an outlet through which the air is discharged to the indoor area; an extraction flow path ( 112 ,  114 ) is provided to be branched from the first inlet flow path ( 111 ,  113 ) and connected to the second air flow path ( 310 ) such that air introduced from the indoor area flows to the second region ( 220 ); and a cooling unit ( 150 ,  160 ) configured to cool air from which moisture is removed while passing through the first region ( 210 ) is provided, and the cooling unit ( 150 ,  160 ) includes an evaporative cooler ( 150 ) in which heat is exchanged between indoor air flowing in the extraction flow path ( 112 ,  114 ) and outdoor air flowing in the first outlet flow path ( 115 ). 
     The evaporative cooler ( 150 ) may include a wet channel ( 151 ) connected to the extraction flow path ( 112 ,  114 ), a dry channel ( 151 ) connected to the first outlet flow path ( 115 ), and a moisture supplier ( 153 ) configured to supply moisture to air flowing in the wet channel ( 151 ); and the moisture supplied to the air flowing in the wet channel ( 151 ) by the moisture supplier ( 153 ) is adsorbed in the second region ( 220 ), is evaporated in the first region ( 210 ) by rotation of the dehumidifying rotor ( 200 ), and humidifies the indoor area. 
     A first heater ( 140 ) may be configured to heat air passing through the first inlet flow path ( 113 ) which is a front end of the first region ( 210 ). 
     A third heater ( 180 ) may be configured to heat air flowing in the first outlet flow path ( 115 ) after passing through the first region ( 210 ). 
     A first damper ( 120 ) may be configured to open or close an air flow path is provided in the first inlet flow path ( 113 ); and when the first damper ( 120 ) is closed during the ventilation mode, the indoor air is discharged to the outdoor area through the first inlet flow path ( 111 ), the extraction flow path ( 112 ,  114 ), and the second air flow path ( 310 ). 
     A second damper ( 320 ) may be configured to open or close one side end of the second air flow path ( 310 ), wherein, when the first damper ( 120 ) and the second damper ( 320 ) are closed during the ventilation mode, the indoor air is discharged to the outdoor area through the first inlet flow path ( 111 ), the extraction flow path ( 112 ,  114 ), the second region ( 220 ), and the second air flow path ( 310 ). 
     A third air flow path ( 410 ) through which the outdoor air is introduced may be connected to the first inlet flow path ( 113 ). 
     An extraction blower ( 170 ) may be configured to cause air to flow is provided on the extraction flow path ( 112 ,  114 ); a first flow path blower ( 130 ) configured to introduce air from one side of the indoor area and cause the air to flow to the other side of the indoor area is provided on the first air flow path ( 111 ,  113 ,  115 ); a second flow path blower ( 330 ) configured to introduce air from one side of the outdoor area and cause the air to flow to the other side of the outdoor area is provided on the second air flow path ( 310 ); and the first flow path blower ( 130 ) and the second flow path blower ( 330 ) blow in opposite directions. 
     A surface of the adsorbing material may be coated with a desiccant polymer. 
     A filter ( 190 ) configured to filter foreign material of air introduced into the indoor area may be provided in each of the first air flow path ( 111 ,  113 ,  115 ). 
     A method of controlling an air conditioner including a first air flow path ( 111 ,  113 ,  115 ) provided to communicate with an indoor area, a second air flow path ( 310 ) provided to communicate with an outdoor area, and a dehumidifying rotor ( 200 ) including a first region ( 210 ) provided along the first air flow path ( 111 ,  113 ,  115 ), a second region ( 220 ) provided along the second air flow path ( 310 ), and an adsorbing material which alternately passes through the first region ( 210 ) and the second region ( 220 ) according to rotation of the dehumidifying rotor ( 200 ) and adsorbs moisture in the first region ( 210 ) or the second region ( 220 ) comprises discharging indoor air introduced through the first air flow path ( 111 ,  113 ,  115 ) to an outdoor area through the second air flow path ( 310 ); and introducing air introduced from the outdoor area into the indoor area through the first air flow path ( 115 ) and ventilating the indoor area. 
     The indoor air is discharged to the outdoor area after passing through the second region ( 220 ), the outdoor air is introduced into the indoor area after passing through the first region ( 210 ), the dehumidifying rotor ( 200 ) is rotated, and heat is exchanged between the indoor air and the outdoor air. 
     During the ventilating of the indoor area, when the air conditioner is operated in a humidification mode for humidifying the indoor area, moisture is supplied to air flowing toward the second region ( 220 ) by a moisture supplier ( 153 ), and the moisture of the air flowing through the second region ( 220 ) flows to the first region ( 210 ) by rotation of the dehumidifying rotor ( 200 ), is evaporated in the first region ( 210 ), and humidifies the indoor area. 
     The number of rotations of the dehumidifying rotor ( 200 ) may be changed according to humidity of the indoor area. 
     An amount of moisture supplied by the moisture supplier ( 153 ) may be adjusted according to an indoor temperature or humidity. 
     A first heater ( 140 ) configured to heat air flowing toward the first region ( 210 ) is provided, and when, during the ventilating of the indoor area, the air conditioner is operated in a humidification mode for humidifying the indoor area and an outdoor temperature or indoor temperature is lower than a set temperature, the first heater ( 140 ) is turned on. 
     When the air conditioner is operated in a drying mode for drying the dehumidifying rotor ( 200 ) after the operation in the humidification mode is completed, a blower ( 170 ,  330 ) is operated such that air flows toward the second region ( 220 ), and the air passing through the second region ( 220 ) is discharged to the outdoor area. 
     A third heater ( 180 ) configured to heat air flowing in the first air flow path ( 115 ) after passing through the first region ( 210 ) is provided, and when, during the ventilating of the indoor area, an outdoor temperature or indoor temperature is lower than a set temperature, the third heater ( 180 ) is turned on. 
     An extraction flow path ( 112 ,  114 ) branched from the first air flow path ( 111 ,  113 ,  115 ) and connected to the second air flow path ( 310 ) such that air introduced from the indoor area flows to the second region ( 220 ) is further provided in the air conditioner; during the ventilating of the indoor area, an extraction blower ( 170 ) provided on the extraction flow path ( 114 ) is operated such that the indoor air is discharged to the outdoor area after passing through the extraction flow path ( 112 ,  114 ) and the second region ( 220 ); a second flow path blower ( 330 ) provided on the second air flow path ( 310 ) is in a stopped state; and the first flow path blower ( 130 ) provided on the first air flow path ( 113 ) is operated such that outdoor air introduced through the third air flow path ( 410 ) is introduced into the indoor area after passing through the first region ( 210 ). 
     Advantageous Effects 
     According to the present invention, since an indoor temperature and indoor humidity are easily adjusted by controlling a dehumidifying rotor and a cooling unit, a comfortable indoor environment can be maintained. 
     In addition, since heat exchange between indoor air and outdoor air is performed in the dehumidifying rotor and an evaporative cooler, a cooling or heating load can be reduced. 
     In addition, since a direction in which outdoor air flows in a second air flow path is changed using a damper, indoor dehumidification, cooling, and humidification can be performed using a simple structure, and thus an indoor temperature and humidity are easily adjusted. 
     In addition, since a dehumidification and cooling mode, a ventilation mode, and a heating mode are performed in one air conditioner, and a humidifying operation can be performed in each of the modes, an indoor temperature and humidity can be maintained in an optimum state. 
     In addition, since a heater is provided in a first air flow path in which indoor air flows, an indoor temperature can be quickly increased. 
     In addition, since a surface of an adsorbing material of the dehumidifying rotor is coated with a desiccant polymer, antibacterial and deodorizing effects can occur while moisture is adsorbed to the adsorbing material. 
     In addition, since a drying mode is performed to maintain the dehumidifying rotor in a dry state, contamination due to bacterial proliferation can be prevented. 
     In addition, since indoor air at room temperature flows in the second air flow path during a heating mode, and a room temperature state of a second heater for regenerating a second region of the dehumidifying rotor can be maintained due to the indoor air at room temperature, freezing damage due to water remaining in the second heater can be prevented in the winter season. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIG. 1  is a view showing a configuration of an air conditioner according to the present invention. 
         FIG. 2  is a view showing a connection structure of the air conditioner illustrated in  FIG. 1 . 
         FIG. 3  is a view showing an operation state during a dehumidifying and cooling operation of the air conditioner according to the present invention. 
         FIG. 4  is a view showing an operation state during a humidifying operation of the air conditioner according to the present invention. 
         FIG. 5  is a view showing an operation state during a ventilation mode of the air conditioner according to the present invention. 
         FIG. 6  is a view showing an operation state of a case in which a humidifying operation is performed in the ventilation mode of the air conditioner according to the present invention. 
         FIG. 7  is a view showing an operation state of a case in which a humidifying operation is performed in a heating mode of the air conditioner according to the present invention. 
         FIG. 8  is a view showing an operation state of a case in which a drying mode of a dehumidifying rotor according to one embodiment is performed in the air conditioner according to the present invention. 
         FIG. 9  is a view showing an operation state of a case in which a drying mode of a dehumidifying motor according to another embodiment is performed in the air conditioner according to the present invention 
     
    
    
     REFERENCE NUMERALS 
     
         
         
           
               111 ,  113 ,  115 : FIRST AIR FLOW PATH 
               112 ,  114 : EXTRACTION FLOW PATH 
               120 : FIRST DAMPER 
               130 : FIRST FLOW PATH BLOWER 
               140 : FIRST HEATER 
               150 : EVAPORATIVE COOLER 
               160 : EVAPORATOR 
               170 : EXTRACTION BLOWER 
               180 : THIRD HEATER 
               200 : DEHUMIDIFYING ROTOR 
               210 : FIRST REGION 
               220 : SECOND REGION 
               310 : SECOND AIR FLOW PATH 
               320 : SECOND DAMPER 
               330 : SECOND FLOW PATH BLOWER 
               340 : SECOND HEATER 
               350 : CONDENSER 
               360 : COMPRESSOR 
               410 : THIRD AIR FLOW PATH 
               450 : PARTITION 
           
         
       
    
     Modes of the Invention 
     Hereinafter, configurations and operations of exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. 
     An air conditioner of the present invention will be described with reference to  FIGS. 1 and 2 . 
     The air conditioner according to the present invention includes first air flow paths  111 ,  113 , and  115  each having at least one side communicating with an indoor area, a second air flow path  310  having at least one side communicating with the outdoor area, a dehumidifying rotor  200  including a first region  210  provided along the first air flow paths  111 ,  113 , and  115 , a second region  220  provided along the second air flow path  310 , and an adsorbing material which alternately passes through the first region  210  and the second region  220  according to rotation of the dehumidifying rotor  200  and adsorbs moisture in the first region  210  or the second region  220 , cooling units  150  and  160  for cooling air dehumidified while passing through the first region  210 , and a control unit  10  configured to control the dehumidifying rotor  200  and the cooling units  150  and  160 . 
     The first air flow paths  111 ,  113 , and  115  include the first inlet flow paths  111  and  113  which communicate with one side of the indoor area and through which indoor air RA is introduced, and the first outlet flow path  115  which communicates with the outer side of the indoor area and discharges the air introduced through the first inlet flow paths  111  and  113  back to the indoor area. 
     The first inlet flow paths  111  and  113  connect an inlet side of the first inlet flow path  111  through which indoor air is introduced and an inlet end of the first region  210 . Accordingly, the indoor air flows through the first inlet flow paths  111  and  113  and the first region  210 . 
     The first outlet flow path  115  connects an outlet end of the first region  210  and an outlet  115   a  through which air SA passing through the first region  210  is discharged to the indoor area. 
     An outdoor air inlet  311  and an outdoor air outlet  312  are respectively provided at one end and the other end of the second air flow path  310 , and both ends of the second air flow path  310  communicate with the outdoor area so that outdoor air OA is introduced or air EA is discharged to the outdoor area. 
     The first air flow paths  113  and  115  and the second air flow path  310  are partitioned by a partition  450 . The first air flow paths  113  and  115  partitioned by the partition  450  may be provided at an indoor side, and the second air flow path  310  may be provided at an outdoor side. 
     A third air flow path  410  is connected to the first inlet flow path  113  such that the outdoor air OA is introduced. In a case in which a first flow path blower  130  is operated, outdoor air introduced through the third air flow path  410  is mixed with air flowing through the first inlet flow path  113 , and the mixed air flows through the first region  210  and then flows to the first outlet flow path  115 . 
     The first inlet flow paths  111  and  113  are connected to extraction flow paths  112  and  114 . The extraction flow paths  112  and  114  include the first extraction flow path  112  through which air introduced into an evaporative cooler  150  flows and the second extraction flow path  114  through which air discharged from the evaporative cooler  150  flows to the second region  220 . 
     The first extraction flow path  112  is branched from the first inlet flow paths  111  and  113  such that extracted air which is some of the air introduced from an indoor area through the first inlet flow path  111  flows to the evaporative cooler  150 . 
     A first damper  120  for opening or closing the flow path is provided on the first inlet flow path  113 . When the first damper  120  is closed, all of the air introduced from the indoor area flows to the extraction flow paths  112  and  114 , and when the first damper  120  is opened, air introduced from the indoor area is split and flows through the first inlet flow path  113  and the extraction flow paths  112  and  114 . 
     An extraction blower  170  for causing the extracted air to flow is provided on the second extraction flow path  114 . 
     A first flow path blower  130  is provided at a front end of the first region  210  of the dehumidifying rotor  200  on the first air flow paths  111 ,  113 , and  115 . The first flow path blower  130  discharges indoor air introduced through the first inlet flow paths  111  and  113  to the other side of the indoor area through the first region  210  and the first outlet flow path  115 . 
     A first heater  140  may be provided between the first flow path blower  130  and the first region  210  of the dehumidifying rotor  200 . The first heater  140  may be controlled to be turned on or off according to an indoor temperature measured by an indoor temperature sensor  11  or an indoor humidity measured by an indoor humidity sensor  12 . When an indoor temperature needs to be increased and indoor humidity needs to be increased by evaporating moisture of the first region  210 , the first heater  140  is turned on to heat air flowing toward the first region  210 . In the first region  210 , an amount of evaporated moisture is increased due to the heated air, and thus an adjustment ability of indoor humidity is improved. 
     The evaporative cooler  150  and the evaporator  160  forming the cooling units  150  and  160  are provided on the first outlet flow path  115 . 
     Heat exchange between extraction air flowing in the extraction flow paths  112  and  114  and air flowing in the first outlet flow path  115  is performed in the evaporative cooler  150 . A dry channel  152  and a wet channel  151  isolated from each other are provided in the evaporative cooler  150 . The extraction air flows through the wet channel  151 , and the wet channel  151  is connected to the extraction flow paths  112  and  114 . The air flowing in the first outlet flow path  115  flows through the dry channel  152  connected to the first outlet flow path  115 . The evaporative cooler  150  may have a structure in which a plurality of plates are spaced a predetermined distance from each other and stacked, and spaces isolated from each other between the plates alternately form the wet channels  151  and dry channels  152 . Accordingly, the dry channels  152  and the wet channels  151  are isolated from each other by the plates, and heat exchange is performed by the plates. 
     The wet channel  151  includes a moisture supplier  153  for supplying moisture to air flowing in the wet channel  151 . The moisture supplier  153  may include a water injection pump for injecting water and a spray nozzle for spraying water supplied by the water injection pump. An amount of water sprayed by an operation of the water injection pump may be adjusted according to an indoor temperature measured by an indoor temperature sensor  11  or an indoor humidity measured by an indoor humidity sensor  12 . 
     When water is sprayed to extraction air flowing in the wet channel  151 , the sprayed water is evaporated to cool the plates surrounding the wet channel  151  and cools air flowing in the dry channel  152 . 
     The evaporator  160  forms a cooling cycle with a condenser  350 , a compressor  360 , and an expansion valve (not shown). The evaporator  160  is provided on the first outlet flow path  115  and connected to an output end of the expansion valve to evaporate a refrigerant expanded due to a low pressure. Air flowing in the first outlet flow path  115  may be cooled by an endothermic phenomenon during the evaporation. 
     The compressor  210  is provided on the second air flow path  310  and compresses a refrigerant to have a high temperature and a high pressure. In a case in which the compressor  210  operates, exothermic action occurs, and air flowing in the second air flow path  310  may be heated by the exothermic action. 
     The condenser  350  is provided in the second air flow path  310  and connected to a refrigerant output end of the compressor  210  to condense a refrigerant compressed at a high temperature and a high pressure. Air flowing in the second air flow path  310  may be heated by an exothermic phenomenon during the condensing process. 
     The expansion valve is connected to the output end of the condenser  350  to expand a refrigerant. 
     The present invention includes the cooling cycle, but may also include a heat pump system. In a case in which the heat pump system is used, functions of the evaporator  160  and the condenser  350  are swapped for each other. Accordingly, since the evaporator  160  serves as a heater configured to heat air, air supplied to an indoor area may be heated using the evaporator  160  when heating the indoor area. 
     The dehumidifying rotor  200  includes an adsorbing material for adsorbing moisture of air in the dehumidifying rotor  200 . The dehumidifying rotor  200  is rotated about a shaft provided at a center thereof by a driving unit (not shown). 
     The dehumidifying rotor  200  adsorbs moisture of air flowing through the first region  210  during a dehumidifying and cooling operation, and when part of the adsorbing material to which the moisture is adsorbed is positioned at the second region  220  by the rotation, the part of the adsorbing material is dried and regenerated due to outdoor air flowing through the second region  220 . In addition, during a humidifying operation, moisture of air flowing through the second region  220  is adsorbed, and when part of the adsorbing material to which the moisture is adsorbed is positioned at the first region  210  by the rotation, the part of the adsorbing material is dried and regenerated due to air flowing through the first region  210 . As described above, the dehumidifying rotor  200  rotates to repeat the moisture adsorbing and regenerating process. 
     The adsorbing material may use a dehumidifying agent, such as silica gel or zeolite, and have a predetermined pattern such as a honeycomb pattern. 
     A surface of the adsorbing material may be coated with a desiccant polymer. The desiccant polymer is an electrolyte polymer material and is ionized when in contact with moisture, and when the adsorbing material is in contact with moisture, bacteria is removed from the adsorbing material due to an osmotic pressure phenomenon caused by a difference in ion concentration, and thus an antibacterial effect occurs. In addition, ammonia, hydrogen sulfide, or the like which causes foul odors is adsorbed to the desiccant polymer ionized into polarized molecules, and a deodorizing effect occurs. The coated desiccant polymer may use silica or zeolite. 
     The control unit  10  may adjust indoor humidity by changing the number of rotations of the dehumidifying rotor  200  according to the indoor humidity. That is, in a case in which an indoor area is dehumidified, an amount of dehumidification of the dehumidifying rotor  200  is increased when the number of rotations of the dehumidifying rotor  200  is increased, and an amount of dehumidification thereof is decreased when the number of rotations of the dehumidifying rotor  200  is decreased, and thus an amount of dehumidification may be adjusted. In addition, in a case in which the indoor area is humidified, an amount of humidification of the dehumidifying rotor  200  is increased when the number of rotations of the dehumidifying rotor  200  is increased, and an amount of humidification is decreased when the number of rotations of the dehumidifying rotor  200  is decreased, and thus an amount of humidification of the indoor area may be adjusted. In this case, as amounts of air blown by the first flow path blower  130 , the extraction blower  170 , and a second flow path blower  330  may be adjusted together, indoor humidity may reach an optimum state. 
     The second flow path blower  330  for introducing air OA of one side of the outdoor area and causing the air OA to flow to the other side of the outdoor area is provided on the second air flow path  310 . The second flow path blower  330  causes outdoor air introduced through the outdoor air inlet  311  to flow to the other side of the outdoor area through the second air flow path  310 , the second region  220 , and the outdoor air outlet  312 . A blowing direction of the first flow path blower  130  is opposite to that of the second flow path blower  330 . 
     A second heater  340 , which is turned on when dehumidifying an indoor area, heats air flowing toward the second region  220 , evaporates moisture of the adsorbing material of the second region  220 , and regenerates the second region  220 , is provided on the second air flow path  310 . 
     The second heater  340  configured to heat outdoor air desired to be delivered by the second flow path blower  330  to increase a drying rate of the dehumidifying rotor  200  so as to suitably regenerate the second region  220  of the dehumidifying rotor  200  further heats the outdoor air preheated while flowing through the compressor  360  and the condenser  350  of a compression type cooling apparatus at a temperature suitable for vaporize moisture of the second region  220 . The second heater  340  may include a hot water pipe in which hot water flows, outdoor air is heated due to heat exchange with the hot water pipe, and a function of the first heater  140  is identical to that of the second heater  340 . 
     A second damper  320  for blocking or releasing an air flow is provided at a side of the outdoor air outlet  312  of the second air flow path  310 . Air to be delivered by an operation of the extraction blower  170  is introduced into the second air flow path  310  through the second extraction flow path  114 , and in a case in which the second damper  320  is opened due to an operation of a dehumidification mode, air is discharged to the outdoor area through the outdoor air outlet  312 , and in a case in which the second damper  320  is closed due to an operation of a humidification mode, air is discharged to the outdoor area through the second region  220  and the outdoor air inlet  311 . Accordingly, the second damper  320  serves to switch directions of air flows in the second air flow path  310  so that air flows in opposite directions in the dehumidification and humidification modes. 
     A indoor temperature sensor  11  configured to detect an indoor temperature and an indoor humidity sensor  12  configured to detect indoor humidity may be provided in the air conditioner. The control unit  10  controls an indoor temperature and indoor humidity according to a temperature and humidity detected by the indoor temperature sensor  11  and the indoor humidity sensor  12 . 
     The first heater  140  is provided between the first flow path blower  130  and the first region  210  in the above description, but instead of the first heater  140 , a third heater  180  may also be provided at a rear end of the evaporator  160 , or the first heater  140  and the third heater  180  may also be provided together. The third heater  180  heats air discharged to an indoor area through the outlet  115   a  to quickly realize a desired indoor temperature when heating an indoor area. 
     &lt;Dehumidifying and Cooling Operation and Humidity Adjusting Operation&gt; 
     Hereinafter, a dehumidifying and cooling operation and a humidity adjustment operation performed by the air conditioner of the present invention will be described with reference to  FIGS. 3 and 4 . 
     When the air conditioner is operated in a dehumidification and cooling mode, the air conditioner enters the state illustrated in  FIG. 3 . That is, the first damper  120  and the second damper  320  are opened, the extraction blower  170 , the first flow path blower  130 , the second flow path blower  330 , the second heater  340 , the evaporative cooler  150 , the evaporator  160 , the condenser  350 , and the compressor  360  are turned on and operated, and the dehumidifying rotor  200  is rotated. The first heater  140  and the third heater  180  are in off states. 
     Indoor air is introduced into the first inlet flow paths  111  and  113  by an operation of the first flow path blower  130 . In this case, some of the introduced air flows to the wet channel  151  in the evaporative cooler  150  through the first extraction flow path  112  by an operation of the extraction blower  170 . Water is sprayed to the wet channel  151  by the moisture supplier  153 , the water absorbs heat while the sprayed water is vaporized to cool the plate which is a border between the wet channel  151  and the dry channel  152 , and the air flowing in the dry channel  152  is cooled by the cooling of the plate. 
     The indoor air passing through the first inlet flow paths  111  and  113  flows to the first region  210  of the dehumidifying rotor  200 . In this case, outdoor air is introduced through the third air flow path  410  and compensates for the indoor air discharged to the outdoor area through the second extraction flow path  114 . Moisture of the air passing through the first region  210  is adsorbed to the adsorbing material so that the air enters a dry state. The adsorbing material which adsorbs moisture in the first region  210  is moved to the second region  220  by the rotation. 
     The air passing through the first region  210  is cooled by heat exchanging with the wet channel  151  while passing through the dry channel  152  in the evaporative cooler  150 , and the cooled air flows to the evaporator  160 . 
     The evaporator  160  cools the air passing through the evaporative cooler  150  again by vaporizing a refrigerant, and low temperature dry air passing through the evaporator  160  is discharged to an indoor area. Through the above-described process, indoor cooling and humidity is adjusted. 
     At this point, the second flow path blower  330  is operated such that the outdoor air is introduced through the outdoor air inlet  311  and flows in the second air flow path  310 . The air in the second air flow path  310  is preheated for a first time by absorbing heat generated by the compressor  360  while passing through the compressor  360  and preheated for a second time by absorbing heat generated by the condenser  350  while passing through the condenser  350 . The air flowing through the condenser  350  is heated by the second heater  340 , and flows through the second region  220  of the dehumidifying rotor  200 , and since the adsorbing material which adsorbs moisture in the first region  210  is positioned in the second region  220 , the air heated by the second heater  340  dries out the moisture of the adsorbing material of the second region  220  to regenerate the dehumidifying rotor  200 . As the regenerated adsorbing material is rotated again and positioned in the first region  210 , dehumidification and regeneration are repeated. 
     The air passing through the second region  220  is discharged to the outdoor area through the outdoor air outlet  312  in which the second damper  320  is opened. In this case, the wet extraction air passing through the wet channel  151  of the evaporative cooler  150  is also discharged to the outdoor area through the second extraction flow path  114  and the outdoor air outlet  312 . 
     In this case, an indoor temperature and humidity are measured by the indoor temperature sensor  11  and the indoor humidity sensor  12 , respectively, and measured indoor temperature, and humidity information are transmitted to the control unit  10 . 
     The control unit  10  controls the above-described units to be turned on or off such that the indoor temperature and humidity become a predetermined temperature and predetermined humidity, respectively. 
     In this case, the humidity may be controlled by adjusting the number of rotations of the dehumidifying rotor  200  and turning the second heater  340  on or off. 
     That is, in a case in which indoor humidity needs to be increased, the number of rotations of the dehumidifying rotor  200  may be increased to control the indoor humidity, and in a case in which the indoor humidity needs to be decreased, the number of rotations of the dehumidifying rotor  200  may be decreased to control the indoor humidity. In addition, when the second heater  340  is turned on, since an amount of moisture that is dried out of the adsorbing material of the second region  220  is increased, an amount of dehumidification is increased, and thus the indoor humidity may be decreased, and when the second heater  340  is turned off, since the amount of moisture dried out of the adsorbing material of the second region  220  is decreased, the amount of dehumidification is decreased, and thus the indoor humidity may be increased. 
     In addition, a temperature may be controlled by adjusting an amount of air blown by the extraction blower  170  and an amount of water injected by the moisture supplier  153  and turning the compressor  360  on or off. 
     That is, in a case in which an indoor temperature needs to be decreased, an amount of air blown by the extraction blower  170  and an amount of water injected by the moisture supplier  153  may be increased to decrease an air temperature of the dry channel  152  by increasing an amount of vapor in the wet channel  151 , and the compressor  360  may be turned on to cool air in the evaporator  160 . In a case in which an indoor temperature needs to be increased, the air conditioner is operated in a manner opposite the above manner. 
     Meanwhile, in a case in which an indoor area is divided into a plurality of rooms, control of a temperature and humidity of each of the rooms is performed by changing and adjusting an amount of air of an indoor unit (not shown) connected to a side of the outlet  115   a  of the first outlet flow path  115  and installed in each of the rooms. 
     Although humidification and cooling of an indoor area are performed through the above-described processes, in a case in which the humidification and cooling of the indoor area are performed for a long time, the indoor humidity may be excessively lowered. In this case, the indoor area needs to be humidified to quickly adjust the indoor humidity. 
     A control process when humidifying an indoor area will be described with reference to  FIG. 4 . 
     When the air conditioner is operated in a humidification mode, the air conditioner enters the state illustrated in  FIG. 4 . That is, the first damper  120  is opened, and the second damper  320  is closed. The extraction blower  170 , the first flow path blower  130 , the first heater  140 , and the evaporative cooler  150  are turned on and operated, and the dehumidifying rotor  200  is rotated. The second flow path blower  330 , the second heater  340 , the evaporator  160 , the condenser  350 , the compressor  360 , the third heater  180  are turned off and stopped. 
     Indoor air is introduced into the first inlet flow paths  111  and  113  by an operation of the first flow path blower  130 . In this case, some of the introduced air flows to the wet channel  151  in the evaporative cooler  150  through the first extraction flow path  112  by an operation of the extraction blower  170 . Water is sprayed to the wet channel  151  by the moisture supplier  153 , and the air moisturized by the spraying of the water flows to the second air flow path  310  through the second extraction flow path  114 . 
     In this case, since the second damper  320  is in a closed state, the wet air passing through the second extraction flow path  114  flows toward the second region  220  of the dehumidifying rotor  200 . Moisture of the wet air passing through the second region  220  is adsorbed to the adsorbing material of the second region  220 , and the air passing through the second region  220  enters a dry state. The adsorbing material adsorbing the moisture in the second region  220  is moved to the first region  210  by the rotation. 
     The air which enters the dry state while passing through the second region  220  is discharged to the outdoor area after passing through the second air flow path  310 . 
     The indoor air passing through the first inlet flow paths  111  and  113  by the first flow path blower  130  flows to the first region  210  of the dehumidifying rotor  200  after being heated by the first heater  140 . 
     Since the adsorbing material adsorbing moisture in the second region  220  is rotated and positioned in the first region  210 , the air heated by the first heater  140  dries out the moisture of the adsorbing material of the first region  210  to regenerate the dehumidifying rotor  200 . 
     A temperature of the air passing through the first region  210  and containing moisture is decreased while passing through the evaporative cooler  150 , and is discharged to an indoor area, and thus indoor humidity is increased. 
     &lt;Ventilating Operation and Humidity Adjusting Operation&gt; 
     A control process in which a ventilating and humidifying operation is performed in the air conditioner of the present invention will be described with reference to  FIG. 5 . 
     When the air conditioner is operated in a ventilation mode in which indoor air is discharged to the outdoor area and outdoor air is introduced into an indoor area to ventilate the indoor area, the air conditioner enters the state illustrated in  FIG. 5 . 
     That is, the first damper  120  and the second damper  320  enter closed states. The extraction blower  170  and the first flow path blower  130  are turned on and operated, and the dehumidifying rotor  200  is rotated. The first heater  140 , the evaporative cooler  150 , the evaporator  160 , the third heater  180 , the second flow path blower  330 , the second heater  340 , the condenser  350 , and the compressor  360  are turned off and stopped. Here, the term “off” of the evaporative cooler  150  refers to the stopped operation of the moisture supplier  153 . 
     Indoor air is introduced into the first inlet flow path  111  by an operation of the extraction blower  170 . In this case, since the first damper  120  is in a closed state, all of the introduced indoor air sequentially flows through the first extraction flow path  112 , the wet channel  151  in the evaporative cooler  150 , and the second extraction flow path  114  to flow to the second air flow path  310 . 
     Since the second damper  320  is closed so that the outdoor air outlet  312  is in a blocked state in the second air flow path  310 , the air passing through the second extraction flow path  114  is discharged to the outdoor area through the second region  220  of the dehumidifying rotor  200 , the second air flow path  310 , and the outdoor air inlet  311 . 
     In addition, when the first flow path blower  130  is operated, since the first damper  120  is in a closed state, introduction of the indoor air is blocked, and outdoor air is introduced through the third air flow path  410 . The introduced outdoor air flows through the first region  210  of the dehumidifying rotor  200  and is introduced into an indoor area through the first outlet flow path  115 , and thus the indoor area is ventilated. 
     According to the above-described configuration, heat exchange between the indoor air and the outdoor air is performed at the evaporative cooler  150  for a first time, and heat exchange between the indoor air and the outdoor air is performed at the dehumidifying rotor  200  for a second time. 
     In a summer season or a period between seasons, an indoor temperature measured by an indoor temperature sensor  11  is low, and an outdoor temperature measured by an outdoor temperature sensor  13  is high. When the air conditioner is operated in the ventilation mode under such temperature conditions, heat exchange between outdoor air flowing in the dry channel  152  and indoor air flowing in the wet channel  151  is performed in the evaporative cooler  150 , and a temperature of the outdoor air flowing in the first outlet flow path  115  is decreased. 
     In addition, when the indoor air flows through the second region  220  of the dehumidifying rotor  200 , a temperature of the adsorbing material is decreased, and when the adsorbing material in which the temperature thereof has been decreased is positioned in the first region  210  by the rotation, heat of the outdoor air is exchanged while the outdoor air flows through the first region  210 , and the outdoor air in which the temperature thereof has been decreased flows to the first outlet flow path  115 . 
     As described above, since the outdoor air, of which heat is exchanged two times in the evaporative cooler  150  and the dehumidifying rotor  200 , is introduced into the indoor area, a cooling load may be reduced and a comfortable indoor environment may also be provided. 
     In a period between seasons or a winter season, an outdoor temperature measured by an outdoor temperature sensor  13  is low, and an indoor temperature measured by an indoor temperature sensor  11  is high. When the air conditioner is operated in the ventilation mode under such temperature conditions, heat exchange is performed two times in the evaporative cooler  150  and the dehumidifying rotor  200 , and a temperature of outdoor air introduced into an indoor area is increased through a process identical to the above-described process. Accordingly, a heating load in an indoor area may be reduced, and a comfortable indoor environment may also be provided. 
     Meanwhile, when humidification is needed due to low indoor humidity in the ventilation mode, a humidifying operation is performed, and operations of the units in this case will be described with reference to  FIG. 6 . 
     That is, in a case in which the humidifying operation is performed, all operations of the units are identical to those of the units illustrated in  FIG. 5  except for the evaporative cooler  150 . The moisture supplier  153  of the evaporative cooler  150  is turned on to supply moisture to air flowing in the wet channel  151  of the evaporative cooler  150  and generates wet air. The moist air is introduced into the second air flow path  310  through the second extraction flow path  114 , and moisture is adsorbed to the adsorbing material of the second region  220  while the moist air flows through the second region  220  of the dehumidifying rotor  200 . The air dried out due to the moisture thereof being adsorbed to the second region  220  is discharged to the outdoor area through the second air flow path  310 . 
     Since outdoor air is introduced through the third air flow path  410  by an operation of the first flow path blower  130 , and the adsorbing material which adsorbs moisture in the second region  220  is positioned in the first region  210 , the moist air generated by air being introduced through the third air flow path  410  evaporating the moisture of the adsorbing material while passing through the first region  210  flows to an indoor area through the first outlet flow path  115 . Through such a process, indoor ventilation and indoor humidification are simultaneously performed. 
     In this case, although the first heater  140  may be configured to be in an off state, the first heater  140  may also be configured to be in an on state to perform evaporation in the first region  210  so as to increase an amount of humidification. In addition, when the first heater  140  is turned on, since the outdoor air is heated by the first heater  140  and introduced into the indoor area, the indoor area may be heated in a case in which a temperature is low. In addition, the third heater  180  may also be configured to be turned on in a case in which the indoor area needs to be heated. 
     Meanwhile, at least one filter  190  for filtering foreign materials contained in air may be provided in the first air flow paths  111 ,  113 , and  115  in which the indoor air and the outdoor air flow. Accordingly, air filtered by the filter  190  may be introduced into the indoor area to keep the indoor air clean while operating in a ventilation mode. 
     &lt;Heating Operation and Humidity Adjusting Operation&gt; 
     A control process in which a heating and humidifying operation is performed in the air conditioner of the present invention will be described with reference to  FIG. 7 . 
     In a case in which a heating operation for heating indoor air and a humidifying operation for adjusting indoor humidity are simultaneously performed, operations of all the units are illustrated in  FIG. 7 . 
     That is, in a case in which the heating operation is performed, the first damper  120  is opened, and the second damper  320  is a closed. The evaporative cooler  150 , the extraction blower  170 , the first flow path blower  130 , and the first heater  140  are turned on and operated, and the dehumidifying rotor  200  is rotated. In a case in which the third heater  180  is provided in the air conditioner, the third heater  180  may be turned on. The evaporator  160 , the second flow path blower  330 , the second heater  340 , the condenser  350 , and the compressor  360  may be turned off and stopped. 
     Indoor air is introduced into the first inlet flow path  111  by operations of the first flow path blower  130  and the extraction blower  170 . Some of the introduced air flows toward the first region  210  of the dehumidifying rotor  200  through the first inlet flow path  113 , and the remaining air is introduced into evaporative cooler  150  through the first extraction flow path  112 , and flows toward the second region  220  of the dehumidifying rotor  200  through the second extraction flow path  114 . 
     Outdoor air is introduced through the third air flow path  410  by an operation of the first flow path blower  130 , the indoor air and the outdoor air are mixed, and the mixed air is heated by the first heater  140  and flows to the first region  210  of the dehumidifying rotor  200 . 
     The indoor air introduced into the wet channel  151  of the evaporative cooler  150  through the first extraction flow path  112  supplies moisture to air flowing in the wet channel  151  when the moisture supplier  153  is turned on, and thus moist air is generated. The moist air is introduced into the second air flow path  310  through the second extraction flow path  114  and flows through the second region  220  of the dehumidifying rotor  200  while the moisture of the moist air is adsorbed to the adsorbing material of the second region  220 . The air dried by the moisture being adsorbed to the adsorbing material in the second region  220  is discharged to the outdoor area through the second air flow path  310 . 
     Since some of the indoor air is discharged to the outdoor area through the second air flow path  310  as described above, the outdoor air is introduced into an indoor area through the third air flow path  410  to compensate for an amount of discharged indoor air. Through such a process, compensation for indoor air and ventilation are simultaneously performed. 
     Since the adsorbing material adsorbing the moisture in the second region  220  is positioned in the first region  210  by the rotation, the air heated by the first heater  140  evaporates the moisture of the adsorbing material while passing through the first region  210  to enter a moist state and is discharged to the indoor area through the first outlet flow path  115 . Through such a process, indoor heating and indoor humidifying are simultaneously performed. 
     In this case, the moisture supplier  153  of the evaporative cooler  150  may also be turned off according to indoor humidity to block supply of moisture, or an amount of moisture supplied by the moisture supplier  153  may also be adjusted to adjust humidity. 
     In the case in which the third heater  180  is provided therein, air passing through the first region  210  is heated just before being introduced into an indoor area, and introduced into an indoor area. In a case in which the air is heated by the first heater  140 , the air may lose heat while passing through the evaporative cooler  150  and the evaporator  160 , but in a case in which the air is heated by the third heater  180 , heat loss may be prevented, and thus heating may be quickly performed. 
     Meanwhile, in a case in which a heat pump system is provided instead of the cooling system including the evaporator  160 , the condenser  350 , and the compressor  360 , the evaporator  160  acting as a condenser may be substituted by reversely circulating a refrigerant during the heating mode, and thus the evaporator  160  may be used as an auxiliary heat source. 
     In a case in which the second heater  340  includes the hot water pipe in which hot water flows, freezing damage of the hot water pipe may occur due to freezing of the water remaining in the hot water pipe. In the case of the present invention, since indoor air flows to the second air flow path  310  through the extraction flow path  114  and the second region  220  during the heating mode, and the second heater  340  may be maintained in a room temperature state due to the indoor air flowing in the second air flow path  310 , the freezing damage of the hot water pipe may be prevented. 
     &lt;Dehumidifying Rotor Drying Mode&gt; 
     A dehumidifying rotor drying mode for drying the dehumidifying rotor  200  in a case in which the dehumidifying rotor  200  is wet will be described with reference to  FIGS. 8 and 9 . 
     The dehumidifying rotor  200  may enter a wet state in which moisture supplied by the moisture supplier  153  is adsorbed to dehumidifying rotor  200  or moisture contained in indoor air is adsorbed thereto, and in a case in which the wet state thereof is left alone, contamination by bacterial proliferation may occur. Accordingly, a process for drying the dehumidifying rotor  200  is needed. 
     As illustrated in  FIG. 8 , when the air conditioner is operated in the dehumidifying rotor drying mode, the first damper  120  and the second damper  320  are closed, the extraction blower  170  is turned on, indoor air sequentially flows through the first inlet flow path  111 , the extraction flow paths  112  and  114 , and the second region  220  of the dehumidifying rotor  200 , and the second region  220  is dried while the indoor air flows through the second region  220 . 
     When the adsorbing material of the second region  220  is dried, the dehumidifying rotor  200  is rotated, the adsorbing material positioned in the first region  210  is moved to a position of the second region  220 , and the second region  220  is dried again while the indoor air flows through the second region  220 . 
     The air passing through the second region  220  is discharged to the outdoor area through the second air flow path  310 , when the indoor air is discharged to the outdoor area, since a pressure of an indoor space is decreased, and thus the decrease in the pressure needs to be compensated for. Accordingly, the indoor air is compensated for by turning the first flow path blower  130  on to introduce outdoor air through the third air flow path  410 . In this case, when the first heater  140  is turned on, since the outdoor air flows through the first region  210 , the dehumidifying rotor  200  may be quickly dried. 
     As the above-described process is repeated, the first region  210  and the second region  220  of the dehumidifying rotor  200  enter dry states. 
     While  FIG. 8  illustrates a process in which the dehumidifying rotor  200  is dried while the indoor air is discharged to the outdoor area,  FIG. 9  illustrates a process in which the dehumidifying rotor  200  is dried by only a flow of outdoor air without discharging indoor air to the outdoor area. 
     Referring to  FIG. 9 , the first damper  120  is closed, the second damper  320  is opened, and the extraction blower  170  is turned off, and thus indoor air is not discharged to the outdoor area. In this state, when the second flow path blower  330  is turned on, and the dehumidifying rotor  200  is rotated, outdoor air is supplied to the dehumidifying rotor  200  to dry the second region  220  of the dehumidifying rotor  200 . In this case, when the second heater  340  is turned on, the second region  220  may be quickly dried. In addition, since the drying is performed by only the outdoor air in a state in which the indoor air is not discharged to the outdoor area, the first flow path blower  130  does not need to be operated as illustrated in  FIG. 8 . 
     As described above, the present invention is not limited to the above-described embodiments, and modified embodiments may be clearly made without departing from the technical spirit in the appended claims of the present invention by those skilled in the art, and the modified embodiments fall within the scope of the present invention.