Air conditioner and method for controlling same

Abstract

The present disclosure relates to an air conditioner. The air conditioner of the present disclosure comprises: a case comprising a supply flow path connecting a first intake port and a first discharge port, and a discharge flow path connecting a second intake port and a second discharge port; a first blower fan which is arranged in the supply flow path and forms an air flow flowing from the first intake port toward the first discharge port; a second blower fan which is arranged in the discharge flow path and forms an air flow flowing from the second intake port toward the second discharge port; a first heat exchanger which is arranged in the supply flow path and transfers heat between air and refrigerant; a second heat exchanger which is arranged further downstream of the supply flow path than the first heat exchanger; a third heat exchanger which is arranged in the discharge flow path and transfers heat between the air and refrigerant; and a dehumidifying wheel which is arranged across the supply flow path and the discharge flow path and exchanges moisture with the air. The case may comprise a communication flow path which allows the supply flow path and the discharge flow path to be in communication with each other and guides the air in the supply flow path toward the discharge flow path.

Description

Air conditioner and its control method

[0001] The present disclosure relates to an air conditioner and a control method thereof, and more particularly, to an air conditioner whose structure can be changed into a constant temperature and humidity device or a ventilation device, and a control method thereof.

[0002] A ventilation device is a device that supplies outdoor air to an indoor space and exhausts indoor air to the outdoors through a circulatory process, heating or cooling the outdoor air supplied to the indoor space and supplying conditioned air to the indoor space.

[0003] A temperature-and-humidity control device circulates air within an indoor space while controlling the temperature and humidity of the air supplied to the space. This allows the temperature and humidity to be maintained within a constant range. However, unlike a ventilation device, it does not circulate outdoor and indoor air.

[0004] The 'air conditioner' disclosed in Korean Patent Publication No. 10-2021-0098016 includes: a case including a supply path through which outdoor air flows toward the indoors and an exhaust path through which indoor air flows toward the outdoors; a first blower fan disposed in the supply path; a second blower fan disposed in the exhaust path; a main heat exchanger disposed on the supply path; and a recovery heat exchanger disposed on the exhaust path.

[0005] The above conventional air conditioner has a problem in that it only performs the function of a ventilation device that supplies outdoor air to an indoor space and discharges indoor air to the outdoor space, and does not perform the function of a constant temperature and humidity device that always maintains the air and humidity of an indoor space within a certain range.

[0006] Furthermore, conventional ventilation systems and conventional temperature and humidity control systems differ in their structures. Therefore, it is difficult for operators to selectively install a single air conditioning module as either a ventilation system or a temperature and humidity control system.

[0007] An object of the present disclosure may be to provide an air conditioner that can be installed as a ventilation device or a temperature and humidity control device.

[0008] Another object of the present disclosure may be to provide an air conditioner in which the ventilation device can be changed into a temperature and humidity control device by post-modifying the structure, or in which the temperature and humidity control device can be used as a ventilation device.

[0009] Another object of the present disclosure may be to provide an air conditioner structure with improved flexibility in structural change.

[0010] Another object of the present disclosure may be to provide an air conditioner with an expanded range of applications.

[0011] Another object of the present disclosure may be to provide an air conditioner with improved heat exchange performance and a control method thereof.

[0012] Another object of the present disclosure may be to provide an air conditioner with improved dehumidifying performance and a control method thereof.

[0013] Another object of the present disclosure may be to provide an air conditioner with improved temperature and humidity maintenance performance and a control method thereof.

[0014] Another object of the present disclosure may be to provide an air conditioner with reduced power consumption.

[0015] Another object of the present disclosure may be to provide an air conditioner structure capable of changing the euro.

[0016] Another object of the present disclosure may be to provide an air conditioner structure with improved structural stability.

[0017] Another object of the present disclosure may be to provide an air conditioner having a compact structure.

[0018] Another object of the present disclosure may be to provide an air conditioner with improved flow recovery efficiency.

[0019] The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0020] According to one aspect of the present disclosure for achieving the above-described object, an air conditioner comprises: a case including a supply passage connecting a first intake port and a first discharge port, and an exhaust passage connecting a second intake port and a second discharge port; a first blower fan disposed in the supply passage and forming an air flow flowing from the first intake port toward the first discharge port; a second blower fan disposed in the exhaust passage and forming an air flow flowing from the second intake port toward the second discharge port; a first heat exchanger disposed in the supply passage and exchanging heat between air and a refrigerant; a second heat exchanger disposed downstream of the supply passage from the first heat exchanger; a third heat exchanger disposed in the exhaust passage and exchanging heat between air and a refrigerant; And a dehumidifying wheel is disposed across the supply path and the discharge path and exchanges air and moisture, and the case includes: a communication path that connects the supply path and the discharge path and guides air in the supply path to the discharge path, so that air flowing in the supply path can be directed to the discharge path through the communication path.

[0021] The case includes: a communication port connecting the downstream of the supply passage and the upstream of the communication passage; and a first barrier pivotally coupled to the case to close the first discharge port or to close the communication port, wherein the first barrier can close the first discharge port or to close the communication port depending on the arrangement angle.

[0022] The first barrier that closes the first discharge port opens the communication port, so that air flowing in the supply path can flow into the communication path through the communication port.

[0023] The first barrier that closes the above-mentioned communication port opens the first discharge port, so that air flowing through the supply path can be supplied to the indoor space.

[0024] The case further includes a second barrier pivotally coupled to the case to open or close the second suction port, wherein the second barrier can open or close the second suction port depending on the arrangement angle.

[0025] The case comprises: a first barrier pivotally coupled to the case and opening or closing the first discharge port; a second barrier pivotally coupled to the case and closing the second intake port or closing the communication passage; a communication port connecting the supply passage and the communication passage; and a third barrier opening or closing the communication port, so that the first discharge port, the second intake port, and the communication port can be individually opened and closed.

[0026] A supporter supporting the first heat exchanger may be further included.

[0027] The above supporter is placed in the above-mentioned flue path and guides the airflow flowing in the above-mentioned flue path, so that the air can circulate more smoothly.

[0028] The above supporter includes: a plurality of guide vanes arranged in a vertical direction and inclined upward toward the exhaust path, so that the guide vanes can guide air passing through the supporter.

[0029] The angle at which the guide vane located on the upper side is tilted in the up-down direction is smaller than the angle at which the guide vane located on the lower side is tilted in the up-down direction, so that air can be uniformly spread over the exhaust path.

[0030] A first valve for controlling the flow rate of refrigerant flowing into the first heat exchanger; a second valve for controlling the flow rate of refrigerant flowing into the second heat exchanger; a third valve for controlling the flow rate of refrigerant flowing into the third heat exchanger; and at least one of the first valve and the second valve can have an opening degree increased when the outlet humidity is higher than the set humidity, thereby increasing the dehumidification amount of at least one of the first heat exchanger and the second heat exchanger.

[0031] The second valve is blocked, and the opening of the first valve is increased, so that the dehumidification amount in the first heat exchanger can be increased.

[0032] It may further include a compressor for compressing the refrigerant.

[0033] The above compressor can increase the dehumidification amount of the first heat exchanger by increasing the frequency when the first valve is opened to the maximum opening degree.

[0034] The opening of the second valve can be increased, thereby increasing the dehumidification amount in the second heat exchanger.

[0035] The above first valve can increase the opening degree when the above second valve is opened to the maximum opening degree, thereby increasing the dehumidification amount of the first heat exchanger.

[0036] The compressor can increase the dehumidification amount of the first heat exchanger and the second heat exchanger by increasing the frequency when the first valve and the second valve are opened to the maximum degree.

[0037] At least one of the first valve and the second valve may have its opening reduced when the outlet humidity is lower than the set humidity, thereby reducing the dehumidification amount of at least one of the first heat exchanger and the second heat exchanger.

[0038] The third valve can reduce the opening when the outlet temperature is higher than the set temperature, thereby reducing the amount of heat exchange in the third heat exchanger.

[0039] The third valve can increase the opening when the outlet temperature is lower than the set temperature, thereby increasing the amount of heat exchange in the third heat exchanger.

[0040] A duct detachably coupled to the case is included, wherein the duct has one end connected to the first discharge port and the other end connected to the second suction port, and can guide airflow discharged from the first discharge port to the second suction port, thereby connecting a supply path and an exhaust path.

[0041] The first discharge port and the second suction port are formed on one side of the case, and the duct can be arranged on one side of the case.

[0042] Specific details of other embodiments are included in the detailed description and drawings.

[0043] According to at least one embodiment of the present disclosure, indoor air drawn into the supply path can circulate through the exhaust path and be discharged back into the indoor space through a flue path that guides air from the supply path to the exhaust path. Since the indoor air is circulated within the case and its temperature and humidity are controlled, the air conditioner can function as a temperature and humidity control device.

[0044] According to at least one embodiment of the present disclosure, air in a supply path can flow to an exhaust path through a first barrier that opens or closes a communication port leading to a communication path, or the flow to the communication path can be blocked. Accordingly, the first barrier can open the communication port when the air conditioner functions as a temperature and humidity control device, and close the communication port when the air conditioner functions as a ventilation device. Furthermore, an air conditioner structure capable of changing the flow path can be provided.

[0045] According to at least one of the embodiments of the present disclosure, the first barrier that closes the first discharge port opens the communication port, so that indoor air drawn into the suction port can circulate through an air conditioner that functions as a temperature and humidity control device and be discharged through the discharge port.

[0046] According to at least one of the embodiments of the present disclosure, the first barrier that closes the ventilation opening opens the first discharge opening, so that air drawn into the supply path through the intake opening can pass through an air conditioner that functions as a ventilation device and be supplied to the indoor space through the first discharge opening.

[0047] According to at least one of the embodiments of the present disclosure, a second barrier that opens or closes the second intake port can be used to prevent air from passing through the second intake port when the air conditioner is functioning as a temperature and humidity control device, and to allow air to be sucked in through the second intake port when the air conditioner is functioning as a ventilation device. That is, by opening or closing the second barrier, the air conditioner can be used as a temperature and humidity control device or a ventilation device.

[0048] According to at least one of the embodiments of the present disclosure, an air conditioner that can be installed as a ventilation device or a temperature and humidity control device through a change in the flow path and a change in the structure can be provided through a first barrier that opens and closes a first discharge port, a second barrier that closes a second intake port or a communication path, and a third barrier that opens and closes the communication path.

[0049] According to at least one of the embodiments of the present disclosure, an air conditioner having improved structural stability can be provided through a supporter supporting a first heat exchanger.

[0050] According to at least one of the embodiments of the present disclosure, a supporter disposed in a flue gas path guides an airflow flowing in the flue gas path, thereby improving the flow rate recovery efficiency of a constant temperature and humidity device.

[0051] According to at least one of the embodiments of the present disclosure, the supporter includes a plurality of guide vanes arranged to be inclined upward toward the exhaust path, so as to uniformly supply air to a dehumidifying wheel arranged on the downstream side.

[0052] According to at least one of the embodiments of the present disclosure, the guide vane positioned higher is arranged to be more inclined upward, so as to uniformly guide air into the exhaust passage extending upward.

[0053] According to at least one of the embodiments of the present disclosure, when the outlet humidity is higher than the set humidity, the opening degree of the first valve and / or the second valve is increased, so that the air conditioner can function as a constant temperature and humidity device by lowering the humidity of the discharged air.

[0054] According to at least one of the embodiments of the present disclosure, when the outlet humidity is lower than the set humidity, the opening degree of the first valve and / or the second valve is reduced, so that the air conditioner can function as a constant temperature and humidity device by increasing the humidity of the discharged air.

[0055] According to at least one of the embodiments of the present disclosure, when the outlet temperature is higher than the set temperature, the opening degree of the third valve is reduced, so that the air conditioner can function as a constant temperature and humidity device by lowering the temperature of the discharged air.

[0056] According to at least one of the embodiments of the present disclosure, when the outlet temperature is lower than the set temperature, the opening degree of the third valve increases, so that the air conditioner can function as a constant temperature and humidity device by increasing the temperature of the discharged air.

[0057] According to at least one of the embodiments of the present disclosure, the air conditioner can function as a constant temperature and humidity device by combining the duct and function as a ventilation device by separating the duct, through a duct that is detachably coupled to the case and connected to the first discharge port and the second suction port.

[0058] The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

[0059] FIG. 1 is a schematic perspective view of an air conditioner according to one embodiment of the present disclosure.

[0060] FIG. 2 is a cross-sectional view of an air conditioner according to one embodiment of the present disclosure.

[0061] FIG. 3 is a cross-sectional view of an air conditioner according to one embodiment of the present disclosure.

[0062] FIG. 4 is a cross-sectional view of an air conditioner according to another embodiment of the present disclosure.

[0063] FIG. 5 is a cross-sectional view of an air conditioner used as a ventilation device according to another embodiment of the present disclosure.

[0064] FIG. 6 is a cross-sectional view of an air conditioner used as a temperature and humidity control device according to another embodiment of the present disclosure.

[0065] Figure 7 is a cross-sectional view of an air conditioner according to another embodiment of the present disclosure.

[0066] Figure 8 is a cross-sectional view of an air conditioner according to another embodiment of the present disclosure.

[0067] Fig. 9 is a perspective view of the supporter of Fig. 7.

[0068] Fig. 10 is a side view of the supporter of Fig. 7.

[0069] FIG. 11 is a side view of a supporter according to another embodiment of the present disclosure.

[0070] Figure 12 is a control block diagram of an air conditioner according to one embodiment of the present disclosure.

[0071] FIG. 13 is a flowchart illustrating a control method of an air conditioner according to one embodiment of the present disclosure.

[0072] Figure 14 is a flow chart of a control method of an air conditioner according to one embodiment of the present disclosure.

[0073] FIG. 15 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present disclosure.

[0074] Figure 16 is a flow chart of a control method of an air conditioner according to another embodiment of the present disclosure.

[0075] FIG. 17 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present disclosure.

[0076] FIG. 18 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present disclosure.

[0077] FIG. 19 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present disclosure.

[0078] FIG. 20 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present disclosure.

[0079] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components are assigned the same reference numerals, and redundant descriptions thereof will be omitted.

[0080] The suffixes “module” and “part” used for components in the following description are given or used interchangeably only for the convenience of writing specifications, and do not have distinct meanings or roles in themselves.

[0081] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present disclosure.

[0082] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0083] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0084] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0085] The direction indications of up (U), down (D), left (Le), right (Ri), front (F), and back (R) shown in the drawings are only for convenience of explanation, and the technical ideas disclosed in this specification are not limited thereby.

[0086]

[0087] Referring to Figure 1, a schematic structure of an air conditioning system is described.

[0088] An air conditioning system may include an air conditioner (1) and an outdoor unit (20). The air conditioner (1) and the outdoor unit (20) may be connected by refrigerant pipes (21, 22, 23).

[0089] The outdoor unit (20) may include a compressor (not shown) that compresses refrigerant. The outdoor unit (20) may include an outdoor heat exchanger (not shown) that exchanges heat between the refrigerant and outdoor air.

[0090] An air conditioner (1) may function as a ventilation device that exchanges heat with indoor air and discharges it to the outside, and exchanges heat with outdoor air and supplies it indoors. Alternatively, the air conditioner (1) may function as a constant temperature and humidity device that exchanges heat with indoor air, controls its temperature and humidity, and then supplies it back indoors. The air conditioner (1) may be an indoor unit.

[0091] The air conditioner (1) and the outdoor unit (20) may be connected via a plurality of refrigerant pipes (21, 22, 23). For example, the air conditioner (1) may be connected to the outdoor unit (20) via three refrigerant pipes. The plurality of refrigerant pipes (21, 22, 23) may include a liquid pipe (22) through which liquid refrigerant flows. The plurality of refrigerant pipes (21, 22, 23) may include a high-pressure refrigerant pipe (23) through which high-pressure gaseous refrigerant flows. The plurality of refrigerant pipes (21, 22, 23) may include a low-pressure refrigerant pipe (21) through which low-pressure gaseous refrigerant flows.

[0092] The outdoor unit (20) compresses the refrigerant through a compressor and can send the compressed refrigerant to an outdoor heat exchanger or to an air conditioner (1).

[0093]

[0094] Referring to Fig. 2, the air conditioner (1) is described.

[0095] An air conditioner (1) may include a case (10). A refrigeration cycle device may be installed in the case (10). Indoor air may pass through the case (10). Outdoor air may pass through the case (10).

[0096] The case (10) may include an intake port (11) and an outlet port (12). Indoor air and / or outdoor air may be introduced into the case (10) through the intake port (11). Conditioned air and / or filtered air may be discharged to the outside of the case (10) through the outlet port (12).

[0097] The intake port (11) may include a first intake port (111). Indoor air may be introduced into the case (10) through the first intake port (111). Outdoor air may be introduced into the case (10) through the first intake port (111). For example, when the air conditioner (1) functions as a ventilation device, outdoor air may be introduced into the case (10) through the first intake port (111). For example, when the air conditioner (1) functions as a constant temperature and humidity device, indoor air may be introduced into the case (10) through the first intake port (111).

[0098] The inlet (11) may include a second inlet (112). The second inlet (112) may be open or closed. Indoor air may be introduced into the case (10) through the second inlet (112). For example, when the air conditioner (1) functions as a ventilation device, indoor air may be introduced into the case (10) through the second inlet (112). For example, when the air conditioner (1) functions as a constant temperature and humidity device, the second inlet (112) may be closed.

[0099] The outlet (12) may include a first outlet (121). The first outlet (121) may be open or closed. Conditioned air may be supplied to the room through the first outlet (121). For example, when the air conditioner (1) functions as a ventilation device, the conditioned air may be supplied to the room through the first outlet (121). For example, when the air conditioner (1) functions as a constant temperature and humidity device, the first outlet (121) may be closed.

[0100] The outlet (12) may include a second outlet (122). Air inside the case (10) may be discharged through the second outlet (122). The air discharged through the second outlet (122) may be conditioned air. The air discharged through the second outlet (122) may be discharged indoors or outdoors. For example, when the air conditioner (1) functions as a ventilation device, indoor air may be discharged outdoors through the second outlet (122). For example, when the air conditioner (1) functions as a constant temperature and humidity device, conditioned air may be supplied indoors through the second outlet (122).

[0101] The case (10) may include a supply path (not shown) connecting the first intake port (111) and the first outlet port (121). The supply path may be formed inside the case (10). The supply path may extend from the first intake port (111) to the first outlet port (121). Outdoor air or indoor air may flow through the supply path. For example, when the air conditioner (1) functions as a ventilation device, outdoor air may flow through the supply path. For example, when the air conditioner (1) functions as a temperature and humidity control device, indoor air may flow through the supply path.

[0102] The supply and exhaust passages may be separated from each other. The supply and exhaust passages may also be connected to each other. The case (10) may include a partition (130) that divides the supply and exhaust passages.

[0103] The partition wall (130) may include a first partition wall (131) that guides air introduced through the first intake port (111) to the dehumidifying wheel (13). The first partition wall (131) may separate a supply path and an exhaust path. For example, the upper surface of the first partition wall (131) may form a supply path, and the lower surface of the first partition wall (131) may form an exhaust path.

[0104] The supply path may include a first path (101) connected to a first suction port (111). Air drawn in from the first suction port (111) may flow through the first path (101). The first path (101) may form an upstream portion of the supply path. The first path (101) may be formed between the first suction port (111) and the dehumidifying wheel (13). The first path (101) may extend toward the dehumidifying wheel (13). The first path (101) may be formed between the first partition wall (131) and the inner surface of the case (10).

[0105] The partition wall (130) may include a second partition wall (132) that guides air passing through the dehumidifying wheel (13) to the first heat exchanger (14). The second partition wall (132) may be positioned between the dehumidifying wheel (13) and the first heat exchanger (14). The second partition wall (132) may form a supply passage. The second partition wall (132) may form an exhaust passage. For example, the upper surface of the second partition wall (132) may form a supply passage, and the lower surface of the second partition wall (132) may form an exhaust passage.

[0106] The supply path may include a second path (102) connected to the first path (101). The second path (102) may allow air passing through the dehumidifying wheel (13) to flow. The second path (102) may be located downstream of the first path (101). The second path (102) may be formed between the dehumidifying wheel (13) and the first heat exchanger (14). The second path (102) may guide air to the first heat exchanger (14). The second path (102) may extend toward the first heat exchanger (14). The second path (102) may be formed between the second bulkhead (132) and the inner surface of the case (10).

[0107] The partition wall (130) may include a third partition wall (133) that guides air passing through the first heat exchanger (14). The third partition wall (133) may guide air passing through the first heat exchanger (14) to the second heat exchanger (15). The third partition wall (133) may be positioned between the first heat exchanger (14) and the second heat exchanger (15). The third partition wall (133) may form a supply path.

[0108] The supply path may include a third path (103) connected to the second path (102). The third path (103) may allow air passing through the first heat exchanger (14) to flow. The third path (103) may be located downstream of the second path (102). The third path (103) may be formed between the first heat exchanger (14) and the second heat exchanger (15). The third path (103) may guide air to the second heat exchanger (15). The third path (103) may extend toward the second heat exchanger (15). The third path (103) may be formed between the third bulkhead (133) and the inner surface of the case (10).

[0109] The partition wall (130) may include a fourth partition wall (134) that guides air passing through the second heat exchanger (15). The fourth partition wall (134) may guide air to the first outlet (121). The fourth partition wall (134) may be located between the second heat exchanger (15) and the first outlet (121). The fourth partition wall (134) may form a downstream portion of a supply flow path. The fourth flow path (104) may be formed between the second heat exchanger (15) and the first outlet (121). The fourth flow path (104) may extend toward the first outlet (121). The fourth flow path (104) may be formed between the fourth partition wall (134) and the inner surface of the case (10).

[0110] The bulkhead (130) may include a fifth bulkhead (135) forming a fourth flow path (104). The fifth bulkhead (135) may form a supply flow path. The fourth flow path (104) may be formed between the fourth bulkhead (134) and the fifth bulkhead. The fifth bulkhead (135) may guide air of the fourth flow path (104) to the first outlet (121).

[0111] The air conditioner (1) may include a dehumidifying wheel (13) arranged across a supply path and an exhaust path. Some of the dehumidifying wheels (13) may be arranged in the supply path and the remaining parts may be arranged in the exhaust path based on the center of rotation. That is, the dehumidifying wheel (13) may rotate across the supply path and the rotation path. The dehumidifying wheel (13) may exchange air and moisture while rotating. The dehumidifying wheel (13) may dehumidify air supplied to a room. For example, when the air conditioner (1) functions as a constant temperature and humidity device, the rotating dehumidifying wheel (13) may absorb moisture from air flowing in the exhaust path and supply the absorbed moisture to air flowing in the supply path. Through this, the humidity of the exhausted air may be lowered. In addition, the humidity of the air supplied to the first heat exchanger (14) may be higher.

[0112] Accordingly, the air supplied to the first heat exchanger (14) has a higher dew point, and a larger amount of dew can be formed as it passes through the first heat exchanger (14). In other words, the first heat exchanger (14) can dehumidify a larger amount with the same output.

[0113] Alternatively, when the air conditioner (1) functions as a ventilation device, the rotating dehumidifying wheel (13) can absorb moisture from the air flowing through the supply path and supply the absorbed moisture to the air flowing through the exhaust path. This can improve the comfort of the indoor space by supplying dehumidified air to the indoor space.

[0114] The air conditioner (1) may include a first heat exchanger (14) arranged in a supply path. The first heat exchanger (14) may be referred to as a main heat exchanger. The first heat exchanger (14) may be arranged downstream of the supply path from the dehumidifying wheel (13). The first heat exchanger (14) may exchange heat with air passing through the dehumidifying wheel (13). The first heat exchanger (14) may exchange heat between air and a refrigerant. For example, the first heat exchanger (14) may function as an evaporator that absorbs thermal energy of the air passing through it. The temperature of the air passing through the first heat exchanger (14) may be lowered. At this time, condensate may be formed while passing through the first heat exchanger (14). However, the present invention is not limited thereto, and the first heat exchanger (14) may also function as a condenser.

[0115] The air conditioner (1) may include a second heat exchanger (15) disposed in the supply path. The second heat exchanger (15) may be referred to as a Licht heat exchanger. The second heat exchanger (15) may be disposed downstream of the supply path compared to the first heat exchanger (14). The second heat exchanger (15) may exchange heat between air and refrigerant. The second heat exchanger (15) may exchange heat with air that has passed through the first heat exchanger (14). The second heat exchanger (15) may function as an evaporator or a condenser. For example, when the air conditioner (1) functions as a ventilation device, the second heat exchanger (15) may function as a condenser. For example, when the air conditioner (1) functions as a temperature and humidity control device, the second heat exchanger (15) may function as an evaporator. The second heat exchanger (15) may be stopped depending on the operating mode. For example, when the air conditioner (1) is operating in constant temperature and humidity mode, the inflow of refrigerant into the second heat exchanger (15) may be blocked.

[0116] The air conditioner (1) may include a first blower fan (16) disposed in the supply passage. The first blower fan (16) may be disposed downstream of the supply passage. For example, the first blower fan (16) may be disposed in the fourth passage (104). The first blower fan (16) may form an airflow flowing from the first intake port (111) toward the first discharge port (121).

[0117] The air conditioner (1) may further include a fourth heat exchanger (17). The fourth heat exchanger (17) may be referred to as an oxheat heat exchanger. The fourth heat exchanger (17) may exchange heat between air in the supply path and refrigerant. The fourth heat exchanger (17) may function as an evaporator or a condenser to control the temperature of the air.

[0118] The case (10) may include an exhaust path connecting the second intake port (112) and the second outlet port (122). The exhaust path may be formed inside the case (10). The exhaust path may extend from the second intake port (112) to the second outlet port (122). Indoor air may flow through the exhaust path. For example, when the air conditioner (1) functions as a ventilation device, indoor air may flow through the exhaust path. For example, when the air conditioner (1) functions as a constant temperature and humidity device, dehumidified air may flow through the exhaust path.

[0119] The air conditioner (1) may include a third heat exchanger (18) disposed in the exhaust passage. The third heat exchanger (18) may be referred to as a recovery heat exchanger. The third heat exchanger (18) may exchange heat between air and a refrigerant. The third heat exchanger (18) may function as a condenser or an evaporator. The third heat exchanger (18) may control the temperature of air flowing in the exhaust passage. For example, when the air conditioner (1) functions as a ventilation device, the third heat exchanger (18) may recover heat energy from indoor air discharged to the outdoors. For example, when the air conditioner (1) functions as a temperature and humidity control device, the third heat exchanger (18) may control the temperature of air discharged to the indoors.

[0120] The air conditioner (1) may include a second blower fan (19) arranged in the exhaust path. The second blower fan (19) may form an air flow from the second intake port (112) toward the second discharge port (122).

[0121] The operating principle of an air conditioner (1) functioning as a ventilation device is described. Outdoor air can be supplied indoors through a supply path. Outdoor air introduced through a first intake port (111) can have its humidity reduced as it passes through a dehumidifying wheel (13). That is, the dehumidifying wheel (13) can dehumidify the outdoor air supplied indoors. Condensate can be formed as the outdoor air passes through a first heat exchanger (14). The first heat exchanger (14) can cool the air. That is, the outdoor air can be dehumidified again as it passes through the first heat exchanger (14). The air cooled as it passes through the first heat exchanger (14) can be heated as it passes through the second heat exchanger (15). Through this, the air can be dehumidified as it passes through the first heat exchanger (14) and its temperature can be controlled as it passes through the second heat exchanger (15). Air that has passed through the first heat exchanger (14) and the second heat exchanger (15) can be supplied to the room through the first outlet (121).

[0122] Indoor air can be discharged outdoors through an exhaust port. Indoor air drawn in through the second intake port (112) can have its humidity reduced as it passes through the dehumidifying wheel (13). Indoor air can undergo heat exchange as it passes through the third heat exchanger (18). The third heat exchanger (18) can recover heat energy from the discharged indoor air. Indoor air that has passed through the dehumidifying wheel and the third heat exchanger (18) can be discharged outdoors through the second discharge port (122).

[0123]

[0124] Referring to Fig. 3, an embodiment in which a duct (30) is combined will be described.

[0125] The air conditioner (1) may include a duct (30) detachably connected to the case (10). One end of the duct (30) may be connected to a first discharge port (121), and the other end may be connected to a second intake port (112). The duct (30) may include a duct passage (300) through which air flows therein. The duct passage (300) may connect a supply passage and an exhaust passage. The duct (30) may guide airflow discharged from the first discharge port (121) to the second intake port (112). Air passing through the supply passage may flow to the exhaust passage through the duct passage (300).

[0126] The first discharge port (121) and the second suction port (112) may be formed on one surface of the case (10). The duct (30) may be coupled to one surface of the case (10). For example, the duct (30) may be coupled to the lower surface of the case (10) where the first discharge port (121) and the second suction port (112) are formed.

[0127] An air conditioner (1) combined with a duct (30) can function as a constant temperature and humidity device. The dehumidifying wheel (13) can humidify air introduced through the first intake port (111). That is, the dehumidifying wheel (13) can increase the dew point of the air introduced through the first intake port (111). The first heat exchanger (14) and the second heat exchanger (15) can dehumidify air with an increased dew point. The dehumidified air passing through the supply passage can move to the exhaust passage through the duct passage (300). The dehumidifying wheel (13) can dehumidify the air in the exhaust passage. The dehumidifying wheel (13) can provide moisture absorbed from the air in the exhaust passage to the air in the supply passage. The temperature of the dehumidified air can be controlled as it passes through the exhaust passage. The third heat exchanger (18) can heat the air cooled while being dehumidified. Through this, air with humidity and temperature within a certain range can be supplied back into the room.

[0128]

[0129] Referring to Fig. 4, an embodiment in which the euro is changed is described.

[0130] The air conditioner (1) may include a communication passage (105) connecting a supply passage and an exhaust passage. The communication passage (105) may connect a downstream of the supply passage and an upstream of the exhaust passage. The communication passage (105) may guide air in the supply passage to the exhaust passage. The communication passage (105) may be formed between the third bulkhead (133) and the case (10). The communication passage (105) may be connected to a downstream of the second heat exchanger (15). The communication passage (105) may extend to a lower side of the first heat exchanger (14). The first heat exchanger (14) may be located above the communication passage (105). The third bulkhead (133) may partition the third passage (103) and the communication passage (105). The connecting passage (105) may be located on the lower side of the third passage (103).

[0131] The case (10) may include a communication port (1350) that connects the supply flow path and the communication flow path (105). The communication port (1350) may connect the downstream of the supply flow path and the upstream of the communication flow path (105). The communication port (1350) may be formed in the fourth bulkhead (134).

[0132] The air conditioner (1) may include a first barrier (41) that opens or closes the first outlet (121). The first barrier (41) may open or close the communication port (1350). The first barrier (41) may be pivotally coupled to the case (10). For example, the first barrier (41) that closes the first outlet (121) may open the communication port (1350). For example, the first barrier (41) that closes the communication port (1350) may open the first outlet (121).

[0133] The air conditioner (1) may include a second barrier (42) that opens or closes the second intake port (112). The second barrier (42) may block a passage between the communication passage (105) and the exhaust passage. The second barrier (42) may communicate between the communication passage (105) and the exhaust passage. The second barrier (42) may guide air introduced through the second intake port (112) to the exhaust passage. Alternatively, the second barrier (42) may guide air passing through the communication passage (105) to the exhaust passage. The second barrier (42) may be pivotally coupled to the case (10). For example, the second barrier (42) that closes the second intake port (112) may communicate the communication passage (105) and the exhaust passage. At this time, the second barrier (42) can guide the air passing through the flue gas passage (105) to the exhaust gas passage. Also, for example, the second barrier (42) that opens the second intake port (112) can block the space between the flue gas passage (105) and the exhaust gas passage.

[0134] The area of ​​the communication passage (105) may decrease as it goes downstream. The area of ​​the communication passage (105) may be smallest at the lower side of the first heat exchanger (14). The third bulkhead (133) may be inclined so that the area of ​​the communication passage (105) becomes smaller as it goes downstream. The third bulkhead (133) may be connected to the lower end of the first heat exchanger (14). The third bulkhead (133) may be inclined so that the area of ​​the communication passage (105) increases as it goes away from the first heat exchanger (14). The third bulkhead (133) may be inclined so that the area of ​​the third passage (103) decreases as it goes downstream. For example, the third bulkhead (133) may be inclined upward in a direction away from the lower end of the first heat exchanger (14).

[0135] The second bulkhead (132) may be inclined so that the area of ​​the exhaust passage increases as it goes downstream of the exhaust passage. The second bulkhead (132) may be connected to the lower end of the first heat exchanger (14). The second bulkhead (132) may be inclined so that the area of ​​the exhaust passage increases as it goes away from the first heat exchanger (14). The second bulkhead (132) may be located above the second suction port (112). The second bulkhead (132) may guide air sucked through the second suction port (112) to the dehumidifying wheel (13). For example, the second bulkhead (132) may be inclined upward in a direction away from the lower end of the first heat exchanger (14).

[0136] The second barrier (42) that opens the second intake port (112) can contact the second bulkhead (132). The second barrier (42) can contact the second bulkhead (132) to block the passage between the flue gas passage (105) and the exhaust gas passage.

[0137] The second barrier (42) may include a chamfered surface (422) that contacts the second bulkhead (132). The second barrier (42), which opens the second intake port (112), may contact the second bulkhead (132) through the chamfered surface (422). The chamfered surface (422) may be formed at one end of the second barrier (42). The chamfered surface (422) may be formed by cutting one end of the second barrier (42). The chamfered surface (422) may be an inclined surface formed at one end of the second barrier (42). The chamfered surface (422) may be formed to be inclined to correspond to the inclination of the second bulkhead (132). Through this, the contact area between the second barrier and the second bulkhead may be increased.

[0138] Accordingly, the sealing of the exhaust path can be improved.

[0139]

[0140] Referring to Fig. 5, an air conditioner (1) functioning as a ventilation device is described.

[0141] The first barrier (41) can close the ventilation opening (1350). The first barrier (41) can open the first outlet (121). Air introduced through the first intake opening (111) can be supplied to the room through the first outlet (121). The air introduced through the first intake opening (111) can be dehumidified while passing through the dehumidifying wheel (13). The dehumidifying wheel (13) can supply moisture absorbed from the air introduced through the first intake opening (111) to the air introduced through the second intake opening (112). The air that has passed through the dehumidifying wheel (13) can be dehumidified while passing through the first heat exchanger (14). The air introduced through the first intake opening (111) can be heated while passing through the second heat exchanger (15). The first barrier (41) can guide dehumidified and / or heated air to the first outlet (121). The first barrier (41) can close the flue passage.

[0142] The second barrier (42) can open the second intake port (112). The second barrier (42) can close the air passage (105). Indoor air can be introduced into the air conditioner (1) through the second intake port (112). The second barrier (42) can guide the air introduced through the second intake port (112) to the exhaust port. The second barrier (42) can contact the second bulkhead (132). The air introduced through the second intake port (112) can receive moisture while passing through the dehumidifying wheel (13). Through this, the dehumidifying wheel (13) can dehumidify the air supplied indoors and transfer the dehumidified moisture to the air discharged outdoors. The air introduced through the second intake port (112) can pass through the third heat exchanger (18). The third heat exchanger (18) can cool or heat the air. The third heat exchanger (18) can recover heat energy from air introduced through the second intake port (112). Air passing through the third heat exchanger (18) can be discharged through the second outlet port (122).

[0143]

[0144] Referring to Fig. 6, an air conditioner (1) functioning as a temperature and humidity control device is described.

[0145] The first barrier (41) can close the first discharge port (121). The first barrier (41) can guide air passing through the supply path to the exhaust path. The first barrier (41) can guide air passing through the supply path to the exhaust path.

[0146] The second barrier (42) can close the second intake port (112). The second barrier (42) can guide air passing through the flue passage (105) to the exhaust passage. The second barrier (42) can guide air passing through the flue passage (105) to the dehumidifying wheel (13).

[0147] The first intake port (111) and the second outlet port (122) may be arranged on the indoor side. Indoor air may be introduced into the air conditioner (1) through the first intake port (111). The air sucked through the first intake port (111) may be humidified while passing through the dehumidifying wheel (13). The air whose dew point increases while passing through the dehumidifying wheel (13) may be dehumidified while passing through the first heat exchanger (14). The air sucked through the first intake port (111) may be dehumidified while passing through the second heat exchanger (15). The air passing through the supply passage may flow through the communication passage (105). The air passing through the communication passage (105) may flow through the exhaust passage. The dehumidifying wheel (13) may dehumidify the air flowing through the exhaust passage. The dehumidifying wheel (13) can supply moisture absorbed from the air flowing through the exhaust passage to the air flowing through the supply passage. The temperature of the dehumidified air can be controlled through the third heat exchanger (18). For example, the third heat exchanger (18) can cool or heat the air flowing through the exhaust passage. Through this, the air conditioner (1) can control the temperature and humidity of the air discharged through the second discharge port (122).

[0148]

[0149] Referring to Fig. 7, an air conditioner (1) in which a first discharge port (121), a second suction port (112), and a flue port (1350) are independently opened and closed is described.

[0150] The first barrier (41) can open or close the first outlet (121). The first barrier (41) that opens the first outlet (121) can contact the fifth bulkhead (135). The first barrier (41) that closes the first outlet (121) can guide air from the supply path to the communication path (105). The first barrier (41) can be pivotally coupled to the case (10) to open or close the first outlet (121).

[0151] The second barrier (42) can open or close the second suction port (112). The second barrier (42) can open or close the communication path (105). The second barrier (42) that opens the second suction port (112) can contact the second bulkhead (132). The second barrier (42) that opens the second suction port (112) can block the communication path (105) and the exhaust path. The second barrier (42) that opens the second suction port (112) can close the communication path (105). The second barrier (42) that opens the second suction port (112) can guide air sucked through the second suction port (112) to the exhaust path. The second barrier (42) that closes the second suction port (112) can open the communication path. The second barrier (42) that closes the second intake port (112) can guide the air of the flue gas passage (105) to the exhaust gas passage.

[0152] The air conditioner (1) may include a third barrier (43) that opens or closes the communication port (1350). The third barrier (43) that closes the communication port (1350) may guide air from the supply path to the first discharge port (121). The third barrier (43) that opens the communication port (1350) may contact the third bulkhead (133).

[0153] The third barrier (43) that opens the communication port (1350) can contact the third bulkhead (133). The third barrier (43) can contact the third bulkhead (133) to block the communication path (105) and the supply path.

[0154] The third barrier (43) may include a chamfered surface (432) that contacts the third bulkhead (133). The third barrier (43) that opens the communication port (1350) may contact the third bulkhead (133) through the chamfered surface (432). The chamfered surface (432) may be formed at one end of the third barrier (43). The chamfered surface (432) may be formed by cutting one end of the third barrier (43). The chamfered surface (432) may be an inclined surface formed at one end of the third barrier (43). The chamfered surface (432) may be formed to be inclined to correspond to the inclination of the third bulkhead (133). Through this, the contact area between the third barrier (43) and the third bulkhead (133) may be increased.

[0155] Accordingly, the sealing of the exhaust path can be improved.

[0156] When the air conditioner (1) functions as a ventilation device, the first discharge port (121) and the second suction port (112) can be opened. The flue port (1350) can be closed. The first barrier (41) can open the first discharge port (121). The second barrier (42) can open the second suction port (112). The third barrier (43) can close the flue port (1350) or / and the flue path (105).

[0157] Outdoor air drawn in through the first intake port (111) can be dehumidified as it passes through the dehumidifying wheel (13). The air that passes through the dehumidifying wheel (13) can be dehumidified as it passes through the first heat exchanger (14). The outdoor air drawn in through the first intake port (111) can be heated as it passes through the second heat exchanger (15). Through this, the conditioned air can be supplied indoors through the first outlet port (121).

[0158] Indoor air can be sucked into the air conditioner (1) through the second intake port (112). The indoor air drawn in through the second intake port (112) can be humidified while passing through the dehumidifying wheel (13). That is, the dehumidifying wheel (13) can supply moisture absorbed from the air in the supply path to the air in the exhaust path. The third heat exchanger (18) can recover heat energy from the air passing through the dehumidifying wheel (13).

[0159] When the air conditioner (1) functions as a constant temperature and humidity device, the first discharge port (121) and the second suction port (112) can be closed. The communication port (1350) can be opened. The first barrier (41) can close the first discharge port (121). The second barrier (42) can close the second suction port (112). The third barrier (43) can open the communication port (1350) or / and the communication path (105).

[0160] Indoor air drawn in through the first intake port (111) can receive moisture while passing through the dehumidifying wheel (13). Air with a high dew point can be dehumidified while passing through the first heat exchanger (14). Air passing through the first heat exchanger (14) can be dehumidified while passing through the second heat exchanger (15). Air in the supply path can flow into the communication path (105). The first barrier (41) that closes the first discharge port (121) can guide air in the supply path to the communication path (105). The second barrier (42) that closes the second intake port (112) can guide air in the communication path (105) to the discharge path.

[0161]

[0162] Referring to Fig. 8, a supporter (50) supporting the first heat exchanger (14) will be described.

[0163] The air conditioner (1) may include a supporter (50) that supports the first heat exchanger (14). The supporter (50) may be disposed on the lower side of the first heat exchanger (14). The first heat exchanger (14) may be mounted on the upper surface of the supporter (50). The supporter (50) may be disposed in the communication passage (105). The supporter (50) may guide an air flow flowing in the communication passage (105). The supporter (50) may guide the air in the communication passage (105) to the dehumidifying wheel (13).

[0164] The second bulkhead (132) may be positioned between the supporter (50) and the first heat exchanger (14). The second bulkhead (132) may extend from between the supporter (50) and the first heat exchanger (14). The second bulkhead (132) may extend obliquely in a direction away from the supporter (50).

[0165] The third bulkhead (133) may be positioned between the supporter (50) and the first heat exchanger (14). The third bulkhead (133) may extend from between the supporter (50) and the first heat exchanger (14). The third bulkhead (133) may extend obliquely in a direction away from the supporter (50).

[0166]

[0167] Referring to Fig. 9, the structure of the supporter (50) is described.

[0168] The supporter (50) may include a support plate (52) that supports the load of the first heat exchanger (14). The support plate (52) may include a pair of support plates (52) spaced apart from each other. A passage through which air passes may be formed between the pair of support plates (52). The passage formed in the supporter (50) may be referred to as a support passage (500).

[0169] The supporter (50) may include a mount (54) on which the first heat exchanger (14) is mounted. The mount (54) may be connected to a support plate (52). For example, the mount (54) may be connected to the upper portions of a pair of support plates (52) that are spaced apart from each other. Air in the communication path (105) may flow between the mount (54) and the support plate (52). A support path (500) may be formed between the mount (54) and the support plate (52).

[0170] The supporter (50) may include a plurality of guide vanes (56) arranged in a vertical direction. The plurality of guide vanes (56) may be arranged in a support path (500). The plurality of guide vanes (56) may extend in a long direction in the extension direction of the mount (54). The plurality of guide vanes (56) may extend in a long direction crossing the direction of air flow. The plurality of guide vanes (56) may extend in a long direction in which a pair of support plates (52) are spaced apart from each other. The plurality of guide vanes (56) may be arranged between a pair of support plates (52). The plurality of guide vanes (56) may be coupled to the support plate (52).

[0171]

[0172] Referring to Fig. 10, the guide vane (56) will be described.

[0173] A plurality of guide vanes (56) may be arranged to be inclined upward. The plurality of guide vanes (56) may be arranged to be inclined upward toward the exhaust passage. The plurality of guide vanes (56) may extend from the support plate (52). The plurality of guide vanes (56) may extend in a direction away from the support plate (52). The plurality of guide vanes (56) may extend to be inclined upward. For example, the plurality of guide vanes (56) arranged in the vertical direction may be arranged to be tilted at a first angle (theta 1) with respect to the vertical direction. The first angle (theta 1) may fall in a range of about 28 degrees to 48 degrees. The first angle (theta 1) may be calculated using the following mathematical expression 1.

[0174]

[0175] In the above mathematical expression 1, a may be the horizontal distance from the supporter to the dehumidifying wheel (see Fig. 8). R may be the radius of the dehumidifying wheel (13).

[0176] A plurality of guide vanes (56) may be arranged parallel to the bulkhead (130). The plurality of guide vanes (56) may be arranged at an angle parallel to the bulkhead (132) located on the downstream side. For example, the plurality of guide vanes (56) may be arranged at an angle parallel to the second bulkhead (132).

[0177]

[0178] Referring to Fig. 11, the guide vane (56) will be described.

[0179] The plurality of guide vanes (56) may have different tilt angles in the vertical direction. The guide vane (56) located on the upper side may have a smaller tilt angle (theta 2) in the vertical direction than the guide vane (56) located on the lower side. For example, the plurality of guide vanes (56) may include a first guide vane (56) located on the lower side to a fourth guide vane (56) located on the upper side. For example, the tilt angle (theta 24) of the fourth guide vane (56) in the vertical direction may be smaller than the tilt angle (theta 23) of the third guide vane (56) in the vertical direction. For example, the angle (theta 23) at which the third guide vane (56) is tilted in the vertical direction may be smaller than the angle (theta 22) at which the second guide vane (56) is tilted in the vertical direction. For example, the angle (theta 22) at which the second guide vane (56) is tilted in the vertical direction may be smaller than the angle (theta 21) at which the first guide vane (56) is tilted in the vertical direction. That is, the guide vane (56) located higher may be arranged to be tilted more upward.

[0180] The second angle (theta 2) at which the plurality of guide vanes (56) are tilted in the vertical direction may increase from the guide vane (56) arranged at the uppermost side to the guide vane (56) arranged at the lowermost side. The guide vane (56) arranged at the lowermost side among the plurality of guide vanes (56) may be arranged parallel to the horizontal direction. That is, the guide vane (56) arranged at the lowermost side among the plurality of guide vanes (56) may be tilted at about 90 degrees with respect to the vertical direction. The second angle (theta 2) at which the total m guide vanes (56) arranged at the uppermost side are tilted in the vertical direction may be calculated using the following mathematical expression 2.

[0181]

[0182] In the above mathematical expression 2, a may be a horizontal distance from the supporter (50) to the dehumidifying wheel (13) (see FIG. 8). r may be a radius of the dehumidifying wheel (13). n may be a sequence number from the top of any one of the plurality of guide vanes (56). For example, the n value of the guide vane (56) located at the top may be 1, and the n value of the guide vane (56) located below the guide vane (56) located at the top may be 2. The n value of the guide vane (56) located at the bottom may be (m-1).

[0183]

[0184] Referring to Fig. 12, a control method of an air conditioner (1) is described.

[0185] The air conditioner (1) may include a temperature sensor (70) that measures temperature. The temperature sensor (70) may measure the temperature of air flowing inside the air conditioner (1). The temperature sensor (70) may include an inlet temperature sensor (71) that measures the temperature of air drawn into the air conditioner (1). The temperature sensor (70) may include an outlet temperature sensor (72) that measures the temperature of air discharged from the air conditioner (1). For example, the inlet temperature sensor (71) may be located at a first inlet (111) of the air conditioner (1). For example, the outlet temperature sensor (72) may be located at a second outlet (122) of the air conditioner (1). The temperature sensor (70) may transmit measured temperature information to the control unit (60).

[0186] The air conditioner (1) may include a humidity sensor (80) that measures humidity. The humidity sensor (80) may measure the humidity of air flowing inside the air conditioner (1). The humidity sensor (80) may include an inlet humidity sensor (81) that measures the humidity of air drawn into the air conditioner (1). The humidity sensor (80) may include an outlet humidity sensor (82) that measures the humidity of air discharged from the air conditioner (1). For example, the inlet humidity sensor (81) may be located at a first inlet (111) of the air conditioner (1). For example, the outlet humidity sensor (82) may be located at a second outlet (122) of the air conditioner (1). The temperature sensor (70) may transmit measured humidity information to the control unit (60).

[0187] The air conditioner (1) may include a power meter (90) that measures the power consumption of the compressor (22). The power meter (90) may measure changes in power consumption according to the frequency of the compressor (22). The power meter (90) may transmit power consumption information of the compressor (22) to the control unit (60).

[0188] The air conditioner (1) may include a first valve (142) that controls the flow rate of refrigerant flowing into the first heat exchanger (14). The opening of the first valve (142) may be controlled. For example, the opening of the first valve (142) may be increased to increase the flow rate of refrigerant flowing into the first heat exchanger (14). For example, the opening of the first valve (142) may be decreased to reduce the flow rate of refrigerant flowing into the first heat exchanger (14).

[0189] The air conditioner (1) may include a second valve (152) that controls the flow rate of refrigerant flowing into the second heat exchanger (15). The opening of the second valve (152) may be controlled. For example, the opening of the second valve (152) may be increased to increase the flow rate of refrigerant flowing into the second heat exchanger (15). For example, the opening of the second valve (152) may be decreased to reduce the flow rate of refrigerant flowing into the second heat exchanger (15).

[0190] The air conditioner (1) may include a third valve (153) that controls the flow rate of refrigerant flowing into the third heat exchanger (18). The third valve (153) may have an adjustable opening. For example, the third valve (153) may increase the opening rate to increase the flow rate of refrigerant flowing into the third heat exchanger (18). For example, the third valve (153) may decrease the opening rate to reduce the flow rate of refrigerant flowing into the third heat exchanger (18).

[0191] The air conditioner (1) may include a dehumidifying wheel motor (132) that rotates the dehumidifying wheel (13). The dehumidifying wheel motor (132) may control the speed at which the dehumidifying wheel (13) rotates. For example, the dehumidifying wheel motor (132) may increase the speed of the dehumidifying wheel (13) to increase the dehumidifying amount. For example, the dehumidifying wheel motor (132) may reduce the speed of the dehumidifying wheel (13) to reduce power consumption. The control unit (60) may control the speed of the dehumidifying wheel (13) through the dehumidifying wheel motor (132). The control unit (60) may control the amount of power supplied to the dehumidifying wheel motor (132).

[0192] The control unit (60) can adjust the frequency of the compressor (22). For example, the control unit (60) can increase the frequency of the compressor (22) to improve heat exchange performance. For example, the control unit (60) can reduce power consumption by lowering the frequency of the compressor (22).

[0193] The air conditioner (1) may include a control unit (60). The control unit (60) may control the operation of the air conditioner (1). The control unit (60) may collect information of the air conditioner (1). For example, the control unit (60) may collect temperature and humidity information of the air conditioner (1) through a temperature sensor (70) and a humidity sensor. For example, the control unit (60) may collect the power consumption of the air conditioner (1) through a power meter (90). The control unit (60) may control the heat exchange performance of the air conditioner (1). For example, the control unit (60) may control the opening degree of the first valve (142) to control the flow rate of the refrigerant supplied to the first heat exchanger (14). For example, the control unit (60) can adjust the opening degree of the second valve (152) to control the flow rate of the refrigerant supplied to the second heat exchanger (15). For example, the control unit (60) can adjust the opening degree of the third valve (153) to control the flow rate of the refrigerant supplied to the third heat exchanger (18). For example, the control unit (60) can adjust the frequency of the compressor (22) to control the temperature of the refrigerant supplied to the heat exchanger.

[0194]

[0195] Referring to FIGS. 13 and 14, the operating method according to the function of the air conditioner (1) is described.

[0196] When the air conditioner (1) functions as a ventilation device, the second heat exchanger (15) can heat the air in the supply path. The second heat exchanger (15) can heat the air that has passed through the first heat exchanger (14).

[0197] When the air conditioner (1) functions as a temperature and humidity control device, the second heat exchanger (15) may be stopped from operating. For example, the inflow of refrigerant into the second heat exchanger (15) may be blocked.

[0198] Below, a control method of an air conditioner (1) for controlling the outlet temperature and outlet humidity when the air conditioner functions as a constant temperature and humidity device is described.

[0199] The control method of an air conditioner may include a step (S100) of detecting whether the operating status of the air conditioner (1) is in constant temperature and humidity mode. If the air conditioner (1) is not operating in constant temperature and humidity mode, the control method of the air conditioner described below may not be executed.

[0200] The method for controlling an air conditioner may include a step (S200) of detecting an outlet temperature and an outlet humidity. The step (S200) of detecting an outlet temperature and an outlet humidity may be performed when the air conditioner (1) is operating in a constant temperature and humidity mode. The control unit (60) may collect information on the outlet temperature of the air conditioner (1) through an outlet temperature sensor (72). The control unit (60) may collect information on the outlet humidity of the air conditioner (1) through an outlet humidity sensor (82).

[0201] The control method of the air conditioner may include a second valve shut-off step (S300). If the air conditioner (1) is operating in constant temperature and humidity mode, the second valve (152) may be shut off (S300). When the second valve (152) is shut off, the inflow of refrigerant into the second heat exchanger (15) may be blocked. In other words, the second heat exchanger (15) may not perform heat exchange.

[0202] The control method of an air conditioner may include a step (S400, S500) of comparing an outlet humidity with a set humidity and adjusting the opening degree of a first valve (142). The opening degree of the first valve (142) may increase when the outlet humidity is higher than the set humidity (S510). The opening degree of the first valve (142) may decrease when the outlet humidity is lower than the set humidity (S520).

[0203] The control method of the air conditioner may include a step (S540) of adjusting the frequency of the compressor (22) when the outlet humidity is higher than the set humidity. The frequency of the compressor (22) may increase when the first valve (142) is opened to the maximum opening degree (S540).

[0204] The control method of an air conditioner may include a step (S700) of adjusting the opening degree of a third valve (153) by comparing the outlet temperature with a set temperature. The opening degree of the third valve (153) may decrease when the outlet temperature is higher than the set temperature (S710). The opening degree of the third valve (153) may increase when the outlet temperature is lower than the set temperature (S720).

[0205]

[0206] Referring to FIGS. 15 and 16, a method for controlling an air conditioner in a constant temperature and humidity mode according to another embodiment of the present disclosure will be described.

[0207] When the air conditioner (1) functions as a ventilation device, the second heat exchanger (15) can heat the air in the supply path. The second heat exchanger (15) can heat the air that has passed through the first heat exchanger (14).

[0208] When the air conditioner (1) functions as a temperature and humidity control device, the second heat exchanger (15) may be stopped from operating. For example, the inflow of refrigerant into the second heat exchanger (15) may be blocked.

[0209] Below, a control method of an air conditioner (1) for controlling the outlet temperature and outlet humidity when the air conditioner functions as a constant temperature and humidity device is described.

[0210] The control method of an air conditioner may include a step (S100) of detecting whether the operating status of the air conditioner (1) is in constant temperature and humidity mode. If the air conditioner (1) is not operating in constant temperature and humidity mode, the control method of the air conditioner described below may not be executed.

[0211] The method for controlling an air conditioner may include a step (S200) of detecting an outlet temperature and an outlet humidity. The step (S200) of detecting an outlet temperature and an outlet humidity may be performed when the air conditioner (1) is operating in a constant temperature and humidity mode. The control unit (60) may collect information on the outlet temperature of the air conditioner (1) through an outlet temperature sensor (72). The control unit (60) may collect information on the outlet humidity of the air conditioner (1) through an outlet humidity sensor (82).

[0212] The control method of an air conditioner may include a step (S400, S800) of comparing the outlet humidity with the set humidity and adjusting the opening degree of a second valve (152). The opening degree of the second valve (152) may increase when the outlet humidity is higher than the set humidity (S810). The opening degree of the second valve (152) may decrease when the outlet humidity is lower than the set humidity (S820).

[0213] The control method of the air conditioner may include a step (S840) of adjusting the opening degree of the first valve (142) when the outlet humidity is higher than the set humidity. The opening degree of the first valve (142) may increase when the second valve (152) is opened to the maximum opening degree (S840).

[0214] The control method of the air conditioner may include a step (S860) of adjusting the frequency of the compressor (22) when the outlet humidity is higher than the set humidity. The frequency of the compressor (22) may increase when the first valve (142) and the second valve (152) are opened to the maximum degree (S860).

[0215] The control method of an air conditioner may include a step (S700) of adjusting the opening degree of a third valve (153) by comparing the outlet temperature with a set temperature. The opening degree of the third valve (153) may decrease when the outlet temperature is higher than the set temperature (S710). The opening degree of the third valve (153) may increase when the outlet temperature is lower than the set temperature (S720).

[0216]

[0217] Referring to Fig. 17, a control method for determining the speed of the dehumidifying wheel (13) is described.

[0218] The control method for determining the speed of the dehumidifying wheel (13) described below can be started when the air conditioner (1) functions as a constant temperature and humidity device.

[0219] The method for controlling an air conditioner may include a step (S1000) of collecting temperature and humidity information. In the step (S1000) of collecting temperature and humidity information, air temperature information may be collected through a temperature sensor (70). In the step (S1000) of collecting temperature and humidity information, air humidity information may be collected through a humidity sensor (80).

[0220] The method for controlling an air conditioner may include a step (S1100) of operating a dehumidifying wheel. In the step (S1100) of operating the dehumidifying wheel, the rotation of the dehumidifying wheel (13) may begin. In the step (S1100) of operating the dehumidifying wheel, the dehumidifying wheel (13) may rotate at a constant speed.

[0221] The above-mentioned initial speed may be the initial set speed. That is, when constant temperature and humidity operation begins, the dehumidifying wheel (13) may begin to rotate at the initial set speed. The initial set speed may be a value within a certain speed range. For example, the initial set speed may be a speed within the range of 0 to 1 rpm.

[0222] Alternatively, the above circle speed may be an increased speed from the previous implementation.

[0223] The method for controlling an air conditioner may include a step (S1200) of comparing an outlet temperature and humidity with a set temperature and humidity. In the step (S1200) of comparing the outlet temperature and humidity with the set temperature and humidity, the outlet temperature can be adjusted within a set temperature range. In the step (S1200) of comparing the outlet temperature and humidity with the set temperature and humidity, the outlet humidity can be adjusted within a set humidity range.

[0224] The method for controlling an air conditioner may include a step (S1300) of detecting power consumption of a compressor. In the step (S1300) of detecting power consumption of a compressor, the amount of power consumed by the compressor (22) to control the outlet temperature and humidity within the set temperature and humidity range while the dehumidifying wheel (13) rotates at a constant speed may be detected.

[0225] The control method of an air conditioner may include a step (S1400) of calculating dehumidification efficiency. The dehumidification efficiency may be calculated by dividing the dehumidification amount by the power consumption of the compressor (22). The dehumidification amount may be calculated using temperature and humidity information measured from a temperature sensor (70) and a humidity sensor (80).

[0226] The control method of an air conditioner may include a step (S1500) of increasing the speed of a dehumidifying wheel. In the step (S1500) of increasing the speed of the dehumidifying wheel, the speed may be increased by a certain amount from the original speed. For example, in the step (S1500) of increasing the speed of the dehumidifying wheel, the rotational speed of the dehumidifying wheel (13) may be increased by 0.5 rpm from the original speed.

[0227] The method for controlling an air conditioner may include a step (S1600) of comparing the outlet temperature and humidity with a set temperature and humidity after the step (S1500) of increasing the rotation speed of the dehumidifying wheel (13). In the step (S1600) of comparing the outlet temperature and humidity with the set temperature and humidity, the outlet temperature can be adjusted within the set temperature range. In the step (S1600) of comparing the outlet temperature and humidity with the set temperature and humidity, the outlet humidity can be adjusted within the set humidity range.

[0228] The method for controlling an air conditioner may include a step (S1700) of detecting a change in power consumption of a compressor. In the step (S1700) of detecting a change in power consumption of a compressor, the amount of power consumed by the compressor (22) to adjust the outlet temperature and humidity to within the set temperature and humidity range while the dehumidifying wheel (13) rotates at an increased speed may be detected.

[0229] The control method of an air conditioner may include a step (S1800) of calculating a changed dehumidification efficiency after a step (S1500) of increasing the speed of a dehumidification wheel. The changed dehumidification efficiency may be calculated by dividing the calculated dehumidification amount by the changed power consumption of the compressor (22). The dehumidification amount may be calculated using temperature information and humidity information measured from a temperature sensor (70) and a humidity sensor (80).

[0230] The method for controlling an air conditioner may include a step (S1900) of comparing dehumidification efficiencies. In the step (S1900) of comparing dehumidification efficiencies, the dehumidification efficiencies before and after increasing the speed of the dehumidification wheel (13) may be compared.

[0231] The control method of the air conditioner may include a step (S2000) of selecting the speed of the dehumidifying wheel. The speed of the dehumidifying wheel (13) may be changed based on the original power consumption and the changed power consumption of the compressor (22).

[0232]

[0233] Referring to FIG. 18, a control method for determining the rotation speed of a dehumidifying wheel (13) according to one embodiment of the present disclosure will be described.

[0234] In the temperature and humidity information collection step (S1000), inlet temperature information can be collected through a temperature sensor (70) (S1010). In the temperature and humidity information collection step (S1000), inlet humidity information can be collected through a humidity sensor (80). In the temperature and humidity information collection step (S1000), outlet temperature information can be collected through a temperature sensor (70). In the temperature and humidity information collection step (S1000), outlet humidity information can be collected through a humidity sensor (80). In the temperature and humidity information collection step (S1000), the collected temperature and / or humidity information can be transmitted to the control unit (60).

[0235] The method for controlling an air conditioner may include a step (S1100) of operating a dehumidifying wheel. In the step (S1100) of operating the dehumidifying wheel, the rotation of the dehumidifying wheel (13) may begin. In the step (S1100) of operating the dehumidifying wheel, the dehumidifying wheel (13) may rotate at a constant speed.

[0236] The above-mentioned initial speed may be the initial set speed. That is, when constant temperature and humidity operation begins, the dehumidifying wheel (13) may begin to rotate at the initial set speed. The initial set speed may be a value within a certain speed range. For example, the initial set speed may be a speed within the range of 0 to 1 rpm.

[0237] Alternatively, the above circle speed may be an increased speed from the previous implementation.

[0238] The temperature and humidity comparison step (S1200) may include a step of adjusting the outlet humidity to within a set humidity range.

[0239] In the outlet humidity control step (S1200), if the outlet humidity is outside the set humidity range, the compressor frequency can be changed (S1220). For example, in the outlet humidity control step (S1200), if the outlet humidity exceeds the set humidity range, the compressor frequency can be increased (S1220). In the outlet humidity control step (S1200), if the outlet humidity falls below the set humidity range, the compressor frequency can be decreased (S1220).

[0240] The temperature and humidity comparison step (S1200) may include a step of adjusting the outlet temperature within a set temperature range.

[0241] The control method of an air conditioner may include a step (S1260) of calculating a dehumidification amount. In the temperature and humidity information collection step (S1200), the collected temperature and / or humidity information may be transmitted to the control unit (60). The control unit (60) may calculate the dehumidification amount based on the received temperature and / or humidity information.

[0242] In the step (S1300) of detecting the power consumption of the compressor, the power consumption of the compressor (22) can be detected through the power meter (90). The power meter (90) can measure the amount of power consumed by the compressor (22) while the dehumidifying wheel (13) rotates at a constant speed. This can be referred to as the original power consumption. The power meter (90) can measure the amount of power consumed by the compressor (22) to control the outlet temperature and outlet humidity within the set temperature and humidity ranges. The power meter (90) can transmit the measured original power consumption information of the compressor (22) to the control unit (60).

[0243] The control unit (60) can calculate the dehumidification efficiency based on the calculated dehumidification amount and the received raw power consumption information (S1400). For example, the control unit (60) can calculate the dehumidification efficiency by dividing the dehumidification amount by the raw power consumption value.

[0244] The control method of an air conditioner may include a step (S1500) of increasing the speed of a dehumidifying wheel. In the step (S1500) of increasing the speed of the dehumidifying wheel, the rotational speed of the dehumidifying wheel may be increased by a certain speed from the original speed. For example, in the step (S1500) of increasing the speed of the dehumidifying wheel, the dehumidifying wheel (13) may be increased by 0.5 rpm from the original speed. The step (S1500) of increasing the speed of the dehumidifying wheel may be performed after the step (S1400) of calculating the original dehumidifying efficiency.

[0245] The temperature and humidity comparison step (S1600) may include a step of adjusting the outlet humidity to within a set humidity range.

[0246] In the outlet humidity control step (S1600), if the outlet humidity is outside the set humidity range, the compressor frequency can be changed (S1620). For example, in the outlet humidity control step (S1600), if the outlet humidity exceeds the set humidity range, the compressor frequency can be increased (S1620). In the outlet humidity control step (S1600), if the outlet humidity falls below the set humidity range, the compressor frequency can be decreased (S1620).

[0247] The temperature and humidity comparison step (S1600) may include a step of adjusting the outlet temperature to within a set temperature range.

[0248] In the step of detecting the power consumption of the compressor (S1710), the changed power consumption of the compressor (22) can be detected through the power meter (90). The power meter (90) can measure the amount of power consumed by the compressor (22) while the dehumidifying wheel (13) rotates at an increased speed. This can be referred to as changed power consumption. The power meter (90) can measure the amount of power consumed by the compressor (22) to control the outlet temperature and outlet humidity within the set temperature and set humidity ranges. The power meter (90) can transmit the measured changed power consumption information of the compressor (22) to the control unit (60).

[0249] The control method of an air conditioner may include a step (S1800) of calculating a changed dehumidification efficiency. The dehumidification efficiency may be calculated by dividing the dehumidification amount by the power consumption of the compressor. The dehumidification efficiency may include a raw dehumidification efficiency, which is a value obtained by dividing the dehumidification amount by the original power consumption of the compressor. The dehumidification efficiency may include a changed dehumidification efficiency, which is a value obtained by dividing the dehumidification amount by the changed power consumption of the compressor.

[0250] The control method of an air conditioner may include a step of comparing dehumidification efficiencies (S1910). In the step of comparing dehumidification efficiencies (S1900), the dehumidification efficiencies before and after increasing the speed of the dehumidification wheel (13) may be compared. For example, in the step of comparing dehumidification efficiencies, the original dehumidification efficiencies may be compared with the changed dehumidification efficiencies.

[0251] In the step of comparing the dehumidification efficiency (S1900), if the original dehumidification efficiency is less than the changed dehumidification efficiency, the speed of the dehumidification wheel can be increased. For example, if the original dehumidification efficiency is less than the changed dehumidification efficiency, the process can return to the step of increasing the speed of the dehumidification wheel (S1500). At this time, the speed of the dehumidification wheel (13) can be increased from the existing increased speed. That is, the existing increased speed of the dehumidification wheel (13) can be regarded as the original speed, and the speed of the dehumidification wheel can be increased again. In this way, if the dehumidification efficiency continues to increase as the speed of the dehumidification wheel is increased, the speed of the dehumidification wheel can be continuously increased.

[0252] The method for controlling an air conditioner may include a step (S2000) of selecting a speed of a dehumidifying wheel. In the step (S1910) of comparing dehumidifying efficiencies, if the original dehumidifying efficiency is greater than the changed dehumidifying efficiency, the speed of the dehumidifying wheel may be selected (S2000). For example, in the step (S2000) of selecting a speed of the dehumidifying wheel, if the changed dehumidifying efficiency is less than the original dehumidifying efficiency, the dehumidifying wheel may rotate at the original speed.

[0253]

[0254] Referring to FIG. 19, a control method for determining the rotation speed of a dehumidifying wheel according to another embodiment of the present disclosure is described.

[0255] In the temperature and humidity information collection step (S1000), inlet temperature information can be collected through a temperature sensor (70) (S1010). In the temperature and humidity information collection step (S1000), inlet humidity information can be collected through a humidity sensor (80) (S1010). In the temperature and humidity information collection step (S1000), outlet temperature information can be collected through a temperature sensor (70) (S1020). In the temperature and humidity information collection step (S1000), outlet humidity information can be collected through a humidity sensor (80) (S1020). In the temperature and humidity information collection step (S1000), the collected temperature and / or humidity information can be transmitted to the control unit (60).

[0256] The method for controlling an air conditioner may include a step (S1100) of operating a dehumidifying wheel. In the step (S1100) of operating the dehumidifying wheel, the rotation of the dehumidifying wheel (13) may begin. In the step (S1100) of operating the dehumidifying wheel, the dehumidifying wheel may rotate at a constant speed.

[0257] The above-mentioned initial speed may be the initial set speed. That is, when constant temperature and humidity operation begins, the dehumidifying wheel (13) may begin to rotate at the initial set speed. The initial set speed may be a value within a certain speed range. For example, the initial set speed may be a speed within the range of 0 to 1 rpm.

[0258] Alternatively, the above circle speed may be an increased speed from the previous implementation.

[0259] The temperature and humidity comparison step (S1200) may include a step (S1210) of adjusting the outlet humidity to within a set humidity range. In the outlet humidity control step (S1210), if the outlet humidity is outside the set humidity range, the frequency of the compressor (22) may be changed (S1220). For example, in the outlet humidity control step (S1210), if the outlet humidity exceeds the set humidity range, the frequency of the compressor may be increased (S1220). In the outlet humidity control step, if the outlet humidity falls below the set humidity range, the frequency of the compressor may be decreased (S1220).

[0260] The temperature and humidity comparison step (S1200) may include a step (S1240) of adjusting the outlet temperature to within a set temperature range. In the outlet temperature control step (S1240), if the outlet temperature falls outside the set temperature range, the opening degree of the sub-valve (153) may be changed (S1250). The third valve (153) may be referred to as a sub-valve (153). In the outlet temperature control step (S1240), if the outlet temperature falls below the set temperature range, the opening degree of the sub-valve (153) may be increased (S1250).

[0261] The method for controlling an air conditioner may include a step (S1260) of calculating a dehumidification amount. In the temperature and humidity information collection step (S1000), the collected temperature and / or humidity information may be transmitted to the control unit (60). The control unit (60) may calculate a dehumidification amount based on the received temperature and / or humidity information (S1260).

[0262] In the step (S1310) of detecting the power consumption of the compressor, the power consumption of the compressor (22) can be detected through the frequency of the compressor (22). The frequency of the compressor may refer to the frequency of the compressor (22) for controlling the outlet temperature and outlet humidity within the set temperature and set humidity range when the dehumidifying wheel (13) rotates at the original speed. The control unit (60) can detect the power consumption of the compressor (22) through the compressor map. The compressor map may mean a graph or diagram of the power consumption of the compressor (22) according to the frequency of the compressor (22). That is, the control unit (60) can predict the original power consumption according to the original frequency through the compressor (22) map.

[0263] The control unit (60) can calculate the dehumidification efficiency based on the calculated dehumidification amount and the received raw power consumption information (S1400). For example, the control unit (60) can calculate the dehumidification efficiency by dividing the dehumidification amount by the raw power consumption value (S1400).

[0264] The control method of an air conditioner may include a step (S1500) of increasing the speed of a dehumidifying wheel. In the step (S1500) of increasing the speed of the dehumidifying wheel, the rotation speed of the dehumidifying wheel (13) may be increased by a certain speed from the original speed. For example, in the step (S1500) of increasing the speed of the dehumidifying wheel, the dehumidifying wheel (13) may be increased by 0.5 rpm from the original speed. The step (S1500) of increasing the speed of the dehumidifying wheel may be performed after the step (S1400) of calculating the original dehumidifying efficiency.

[0265] The temperature and humidity comparison step (S1600) may include a step (S1610) of adjusting the outlet humidity to within a set humidity range. In the outlet humidity control step (S1610), if the outlet humidity is outside the set humidity range, the frequency of the compressor (22) may be changed (S1620). For example, in the outlet humidity control step (S1610), if the outlet humidity exceeds the set humidity range, the frequency of the compressor (22) may be increased (S1620). In the outlet humidity control step (S1610), if the outlet humidity falls below the set humidity range, the frequency of the compressor may be decreased (S1620).

[0266] The temperature and humidity comparison step (S1600) may include a step (S1640) of adjusting the outlet temperature to within a set temperature range. In the outlet temperature control step (S1640), if the outlet temperature falls outside the set temperature range, the opening degree of the sub-valve (153) may be changed (S1650). The third valve (153) may be referred to as a sub-valve (153). In the outlet temperature control step (S1640), if the outlet temperature falls below the set temperature range, the opening degree of the sub-valve (153) may be increased (S1650).

[0267] In the step (S1710) of detecting the changed power consumption of the compressor, the changed power consumption of the compressor (22) can be detected through the changed frequency of the compressor (22). The changed frequency of the compressor (22) can refer to the changed frequency of the compressor to control the outlet temperature and outlet humidity within the set temperature and set humidity range when the dehumidifying wheel (13) rotates at an increased speed. The control unit (60) can detect the changed power consumption of the compressor (22) through the compressor map. The control unit (60) can predict the changed power consumption according to the changed frequency through the compressor map.

[0268] The control method of an air conditioner may include a step (S1800) of calculating a changed dehumidification efficiency. The dehumidification efficiency may be calculated by dividing the dehumidification amount by the power consumption of the compressor. The dehumidification efficiency may include a raw dehumidification efficiency, which is a value obtained by dividing the dehumidification amount by the original power consumption of the compressor. The dehumidification efficiency may include a changed dehumidification efficiency, which is a value obtained by dividing the dehumidification amount by the changed power consumption of the compressor.

[0269] The control method of an air conditioner may include a step (S1910) of comparing dehumidification efficiencies. In the step (S1910) of comparing dehumidification efficiencies, the dehumidification efficiencies before and after increasing the speed of the dehumidification wheel (13) may be compared. For example, in the step (S1910) of comparing dehumidification efficiencies, the original dehumidification efficiencies may be compared with the changed dehumidification efficiencies.

[0270] In the step of comparing the dehumidification efficiency (S1910), if the original dehumidification efficiency is less than the changed dehumidification efficiency, the speed of the dehumidification wheel can be increased. For example, if the original dehumidification efficiency is less than the changed dehumidification efficiency, the process can return to the step of increasing the speed of the dehumidification wheel (S1500). At this time, the speed of the dehumidification wheel (13) can be increased from the existing increased speed. That is, the existing increased speed of the dehumidification wheel can be regarded as the original speed, and the speed of the dehumidification wheel can be increased again. In this way, if the dehumidification efficiency continues to increase as the speed of the dehumidification wheel is increased, the speed of the dehumidification wheel can be continuously increased.

[0271] The method for controlling an air conditioner may include a step (S2000) of selecting a speed of a dehumidifying wheel. In the step (S1910) of comparing dehumidifying efficiencies, if the original dehumidifying efficiency is greater than the changed dehumidifying efficiency, the speed of the dehumidifying wheel may be selected (S2000). For example, in the step (S2000) of selecting a speed of the dehumidifying wheel, if the changed dehumidifying efficiency is less than the original dehumidifying efficiency, the dehumidifying wheel may rotate at the original speed.

[0272]

[0273] Referring to FIG. 20, a method for controlling the speed of a dehumidifying wheel according to another embodiment of the present disclosure is described.

[0274] In the temperature and humidity information collection step (S1000), inlet temperature information can be collected through a temperature sensor (70). In the temperature and humidity information collection step (S1000), inlet humidity information can be collected through a humidity sensor (80). In the temperature and humidity information collection step (S1000), outlet temperature information can be collected through a temperature sensor (70). In the temperature and humidity information collection step (S1000), outlet humidity information can be collected through a humidity sensor (80). In the temperature and humidity information collection step (S1000), the collected temperature and / or humidity information can be transmitted to the control unit (60).

[0275] The method for controlling an air conditioner may include a step (S1100) of operating a dehumidifying wheel. In the step (S1100) of operating the dehumidifying wheel, the rotation of the dehumidifying wheel (13) may begin. In the step (S1100) of operating the dehumidifying wheel, the dehumidifying wheel (13) may rotate at a constant speed.

[0276] The above-mentioned initial speed may be the initial set speed. That is, when constant temperature and humidity operation begins, the dehumidifying wheel may begin to rotate at the initial set speed. The initial set speed may be a value within a certain speed range. For example, the initial set speed may be a speed within the range of 0 to 1 rpm.

[0277] Alternatively, the above circle speed may be an increased speed from the previous implementation.

[0278] In the temperature and humidity comparison step (S1200), a step (1210) of adjusting the outlet humidity to within a set humidity range may be included. In the outlet humidity control step (S1210), if the outlet humidity is outside the set humidity range, the frequency of the compressor (22) may be changed (S1220). For example, in the outlet humidity control step (S1210), if the outlet humidity exceeds the set humidity range, the frequency of the compressor (22) may be increased (S1220). In the outlet humidity control step (S1210), if the outlet humidity falls below the set humidity range, the frequency of the compressor may be decreased (S1220).

[0279] The temperature and humidity comparison step (S1200) may include a step (S1240) of adjusting the outlet temperature to within a set temperature range. In the outlet temperature adjustment step (S1240), if the outlet temperature falls outside the set temperature range, the opening degree of the third valve (153) may be adjusted. For example, if the outlet temperature falls below the set temperature range, the opening degree of the third valve (153) may be increased (S1250).

[0280] The control method of an air conditioner may include a step (S1500) of increasing the speed of a dehumidifying wheel. In the step (S1500) of increasing the speed of the dehumidifying wheel, the rotation speed of the dehumidifying wheel (13) may be increased by a certain speed from the original speed. For example, in the step (S1500) of increasing the speed of the dehumidifying wheel, the rotation speed of the dehumidifying wheel (13) may be increased by 0.5 rpm from the original speed.

[0281] The temperature and humidity comparison step (S1600) may include a step (S1610) of adjusting the outlet humidity to within a set humidity range. In the outlet humidity control step (S1610), if the outlet humidity is outside the set humidity range, the frequency of the compressor (22) may be changed (S1620). For example, in the outlet humidity control step (S1610), if the outlet humidity exceeds the set humidity range, the frequency of the compressor (22) may be increased (S1620). In the outlet humidity control step (S1610), if the outlet humidity falls below the set humidity range, the frequency of the compressor (22) may be decreased (S1620).

[0282] The temperature and humidity comparison step (S1600) may include a step (S1640) of adjusting the outlet temperature to within a set temperature range. In the outlet temperature adjustment step (S1640), if the outlet temperature falls outside the set temperature range, the opening degree of the third valve (153) may be adjusted. For example, if the outlet temperature falls below the set temperature range, the opening degree of the third valve (153) may be increased (S1650).

[0283] In the step of comparing dehumidification efficiency (S1900), the dehumidification efficiency can be compared by comparing the frequency of the compressor (22) (S1920). For example, it can be determined that the lower the frequency of the compressor, the higher the dehumidification efficiency.

[0284] In the step of comparing the frequency of the compressor (S1920), the frequency before and after increasing the speed of the dehumidifying wheel (13) can be compared. For example, in the step of comparing the frequency of the compressor (S1920), the changed frequency can be compared with the original frequency.

[0285] In the step (S1920) of comparing the frequency of the compressor, if the changed frequency is smaller than the original frequency, the speed of the dehumidifying wheel (13) can be increased (S1500). For example, if the changed frequency is smaller than the original frequency, the process can return to the step (S1500) of increasing the rotation speed of the dehumidifying wheel (13). At this time, the rotation speed of the dehumidifying wheel (13) can be increased from the existing increased speed. That is, the existing increased speed of the dehumidifying wheel (13) can be regarded as the original speed, and the speed of the dehumidifying wheel (13) can be increased again. Through this, if the frequency of the compressor continues to decrease as the speed of the dehumidifying wheel (13) is increased, the speed of the dehumidifying wheel (13) can be continuously increased.

[0286] The control method of the air conditioner may include a step (S2000) of selecting the speed of the dehumidifying wheel (13). In the step (S1900) of comparing the dehumidifying efficiency, if the changed frequency is greater than the original frequency, the speed of the dehumidifying wheel (13) may be selected (S2000). For example, in the step (S2000) of selecting the speed of the dehumidifying wheel, if the changed frequency is greater than the original frequency, the rotation speed of the dehumidifying wheel may be selected as the original speed.

[0287]

[0288] Referring to FIGS. 1 to 20, an air conditioner according to one aspect of the present disclosure may include: a case including a supply path connecting a first intake port and a first discharge port, and an exhaust path connecting a second intake port and a second discharge port; a first blower fan disposed in the supply path and forming an air flow flowing from the first intake port toward the first discharge port; a second blower fan disposed in the exhaust path and forming an air flow flowing from the second intake port toward the second discharge port; a first heat exchanger disposed in the supply path and exchanging heat between air and a refrigerant; a second heat exchanger disposed downstream of the supply path from the first heat exchanger; and a dehumidifying wheel disposed across the supply path and the discharge path and exchanging moisture with air.

[0289] According to another aspect of the present disclosure, the third heat exchanger may be disposed in the exhaust path and may exchange heat between air and refrigerant.

[0290] According to another aspect of the present disclosure, the case may include a communication channel that connects the supply channel and the exhaust channel, and guides air in the supply channel to the exhaust channel.

[0291] According to another aspect of the present disclosure, the case may include: a communication port connecting the downstream of the supply flow path and the upstream of the communication flow path.

[0292] According to another aspect of the present disclosure, the case may include a first barrier pivotally coupled to the case to close the first discharge port or to close the communication port.

[0293] According to another aspect of the present disclosure, the first barrier that closes the first discharge port can open the communication port.

[0294] According to another aspect of the present disclosure, the first barrier that closes the communication port can open the first discharge port.

[0295] According to another aspect of the present disclosure, the case may further include a second barrier pivotally coupled to the case to open or close the second suction port.

[0296] According to another aspect of the present disclosure, the case may include: a first barrier pivotally coupled to the case and opening or closing the first discharge port; a second barrier pivotally coupled to the case and closing the second intake port or closing the communication passage; a communication port connecting the supply passage and the communication passage; and a third barrier opening or closing the communication port.

[0297] According to another aspect of the present disclosure, the first heat exchanger further includes a supporter, wherein the supporter is disposed in the communication path and can guide an airflow flowing in the communication path.

[0298] According to another aspect of the present disclosure, the supporter may include: a plurality of guide vanes arranged in a vertical direction and inclined upward toward the discharge path.

[0299] According to another aspect of the present disclosure, the angle at which the guide vane positioned on the upper side is tilted with respect to the up-down direction may be smaller than the angle at which the guide vane positioned on the lower side is tilted with respect to the up-down direction.

[0300] According to another aspect of the present disclosure, the present invention may include a first valve for controlling the flow rate of refrigerant flowing into the first heat exchanger; and a second valve for controlling the flow rate of refrigerant flowing into the second heat exchanger.

[0301] According to another aspect of the present disclosure, when the first discharge port and the second suction port are closed, the second heat exchanger can be stopped from operating.

[0302] According to another aspect of the present disclosure, when the first discharge port and the second suction port are closed, the second heat exchanger and the first heat exchanger can function as an evaporator.

[0303] According to another aspect of the present disclosure, when the first discharge port and the second suction port are closed, the third heat exchanger can function as a condenser.

[0304] According to another aspect of the present disclosure, when the first discharge port and the second suction port are open, the second heat exchanger can perform a function opposite to that of the first heat exchanger.

[0305] According to another aspect of the present disclosure, when the first discharge port and the second suction port are open, the first heat exchanger can function as an evaporator and the second heat exchanger can function as a condenser.

[0306] According to another aspect of the present disclosure, when the first discharge port and the second suction port are open, the third heat exchanger can function as an evaporator.

[0307] According to another aspect of the present disclosure, the third heat exchanger may include a third valve for controlling the flow rate of refrigerant flowing into the third heat exchanger.

[0308] According to another aspect of the present disclosure, at least one of the first valve and the second valve may have an opening degree increased when the outlet humidity is higher than the set humidity.

[0309] According to another aspect of the present disclosure, the second valve may be blocked and the first valve may be opened to an increased degree.

[0310] According to another aspect of the present disclosure, the compressor may have a frequency that increases when the first valve is opened to the maximum opening.

[0311] According to another aspect of the present disclosure, the second valve can have an increased opening.

[0312] According to another aspect of the present disclosure, the first valve can have its opening increased when the second valve is opened to its maximum opening.

[0313] According to another aspect of the present disclosure, the compressor may have a frequency that increases when the first valve and the second valve are opened to the maximum opening.

[0314] According to another aspect of the present disclosure, at least one of the first valve and the second valve may have its opening reduced when the outlet humidity is lower than the set humidity.

[0315] According to another aspect of the present disclosure, the third valve may have its opening reduced when the outlet temperature is higher than the set temperature.

[0316] According to another aspect of the present disclosure, the third valve may have an increased opening when the outlet temperature is lower than the set temperature.

[0317]

[0318] Referring to FIGS. 1 to 20, an air conditioner according to one aspect of the present disclosure may include: a case including a supply path connecting a first intake port and a first discharge port, and an exhaust path connecting a second intake port and a second discharge port; a first blower fan disposed in the supply path and forming an air flow flowing from the first intake port toward the first discharge port; a second blower fan disposed in the exhaust path and forming an air flow flowing from the second intake port toward the second discharge port; a first heat exchanger disposed in the supply path and exchanging heat between air and a refrigerant; a second heat exchanger disposed downstream of the supply path from the first heat exchanger; a third heat exchanger disposed in the exhaust path and exchanging heat between air and a refrigerant; a dehumidifying wheel disposed across the supply path and the discharge path and exchanging moisture with air; and a duct detachably coupled to the case.

[0319] According to another aspect of the present disclosure, the duct has one end connected to the first outlet and the other end connected to the second intake port, and can guide airflow discharged from the first outlet to the second intake port.

[0320] According to another aspect of the present disclosure, the first discharge port and the second suction port may be formed on one surface of the case.

[0321]

[0322] Any or all of the embodiments of the present disclosure described above are not mutually exclusive or distinct. Any or all of the embodiments of the present disclosure described above may have their respective components or functions combined or used together.

[0323] For example, it means that a configuration A described in a particular embodiment and / or drawing can be combined with a configuration B described in another embodiment and / or drawing. That is, even if a combination between configurations is not directly described, it means that a combination is possible, except in cases where a combination is described as impossible.

[0324] The above detailed description should not be construed as limiting in any respect and should be considered illustrative only. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. A case including a supply path connecting a first intake port and a first discharge port, and a discharge path connecting a second intake port and a second discharge port; A first blower fan disposed in the above supply path and forming an airflow from the first intake port toward the first discharge port; A second blower fan disposed in the above exhaust path and forming an airflow from the second intake port toward the second outlet port; A first heat exchanger disposed in the above supply path and exchanging heat between air and refrigerant; A second heat exchanger disposed downstream of the supply path from the first heat exchanger; A third heat exchanger disposed in the above exhaust path and exchanging heat between air and refrigerant; and A dehumidifying wheel is disposed across the supply path and the discharge path and exchanges air and moisture, The above case is: An air conditioner including a communication channel that connects the supply channel and the exhaust channel and guides air in the supply channel to the exhaust channel.

2. In paragraph 1, The above case is: A connecting port connecting the downstream of the above supply path and the upstream of the above communication path; and An air conditioner comprising a first barrier pivotally coupled to the case to close the first discharge port or to close the flue port.

3. In paragraph 2, The first barrier that closes the first outlet is An air conditioner that opens the above-mentioned ventilation hole.

4. In paragraph 2, The first barrier that closes the above-mentioned communication port is, An air conditioner that opens the first outlet.

5. In paragraph 2, An air conditioner further comprising a second barrier pivotally coupled to the case to open or close the second intake port.

6. In paragraph 1, The above case is: A first barrier pivotally coupled to the case and opening or closing the first discharge port; A second barrier pivotally coupled to the case and closing the second intake port or closing the flue passage; A connecting port connecting the above supply flow path and the above communication flow path; and An air conditioner comprising a third barrier for opening or closing the above-mentioned ventilation opening.

7. In paragraph 1, Further comprising a supporter supporting the first heat exchanger, The above supporter, An air conditioner arranged in the above-mentioned flue passage and guiding the air flow flowing in the above-mentioned flue passage.

8. In paragraph 7, The above supporters are: An air conditioner comprising a plurality of guide vanes arranged in a vertical direction and inclined upward toward the discharge path.

9. In paragraph 8, The angle at which the guide vane located on the upper side is tilted in the up-down direction is An air conditioner in which the guide vane located at the lower side has a smaller tilt angle than the vertical tilt angle.

10. In paragraph 1, A first valve for controlling the flow rate of refrigerant flowing into the first heat exchanger; A second valve for controlling the flow rate of refrigerant flowing into the second heat exchanger; A third valve for controlling the flow rate of refrigerant flowing into the third heat exchanger; and At least one of the first valve and the second valve, An air conditioner in which the opening degree increases when the outlet humidity is higher than the set humidity.

11. In paragraph 10, The above second valve is blocked, The above first valve is an air conditioner with an increasing opening degree.

12. In paragraph 11, further comprising a compressor for compressing refrigerant; The above compressor, An air conditioner in which the frequency increases when the first valve is opened to the maximum opening.

13. In paragraph 10, The above second valve is an air conditioner with an increasing opening degree.

14. In paragraph 13, The above first valve, An air conditioner in which the opening degree increases when the second valve is opened to the maximum degree.

15. In paragraph 14, The above compressor, An air conditioner in which the frequency increases when the first valve and the second valve are opened to the maximum opening degree.

16. In paragraph 10, At least one of the first valve and the second valve, An air conditioner in which the opening is reduced when the outlet humidity is lower than the set humidity.

17. In paragraph 10, The third valve above, An air conditioner in which the opening degree is reduced when the outlet temperature is higher than the set temperature.

18. In paragraph 10, The third valve above, An air conditioner in which the opening degree increases when the outlet temperature is lower than the set temperature.

19. A case including a supply path connecting a first intake port and a first discharge port, and an exhaust path connecting a second intake port and a second discharge port; A first blower fan disposed in the above supply path and forming an airflow from the first intake port toward the first discharge port; A second blower fan disposed in the above exhaust path and forming an airflow from the second intake port toward the second outlet port; A first heat exchanger disposed in the above supply path and exchanging heat between air and refrigerant; A second heat exchanger disposed downstream of the supply path from the first heat exchanger; A third heat exchanger arranged in the above exhaust path and exchanging heat between air and refrigerant; A dehumidifying wheel arranged across the supply path and the discharge path and exchanging air and moisture; and comprising a duct detachably coupled to the above case; The above duct, An air conditioner having one end connected to the first outlet and the other end connected to the second intake port, and guiding airflow discharged from the first outlet to the second intake port.

20. In paragraph 19, The above first discharge port and the above second suction port, An air conditioner formed on one side of the above case.

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