Humidifier

Abstract

To inhibit wasteful consumption of energy required for regeneration of an adsorption member.SOLUTION: A humidifier comprises: an adsorption member (22) that adsorbs moisture in outdoor air; a regeneration unit (25, 26) that desorbs moisture supplied to a target space (I) from the adsorption member (22); and a control unit (C) that sets the output of the regeneration unit (25, 26) to a first value when the absolute humidity of the outdoor air is a first humidity, and sets the output of the regeneration unit (25, 26) to a second value smaller than the first value when the absolute humidity of the outdoor air is a second humidity lower than the first humidity.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to a humidification device. [Background technology]

[0002] Patent Document 1 discloses a water-free humidifier (air conditioner). The air conditioner adsorbs moisture in the outdoor air using a humidification rotor. When air heated by a heater flows through the humidification rotor, moisture is desorbed from the adsorbent in the humidification rotor. The air containing the desorbed moisture is sent to an air conditioner indoor unit through a hose. The air conditioner indoor unit supplies the moist air to a target space. This humidifies the air in the target space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-044395 A Summary of the Invention [Problem to be solved by the invention]

[0004] When the humidity of the outdoor air is low, the amount of moisture adsorbed by the humidifying rotor is small. In spite of this, if the output of the regenerating unit, such as the heater for regenerating the humidifying rotor, is set to normal output, there is a problem that power is wasted.

[0005] An object of the present disclosure is to suppress the unnecessary consumption of energy required for regenerating an adsorption member. [Means for solving the problem]

[0006] The first aspect is directed to a humidifier. The humidifier includes an adsorption member (22) that adsorbs moisture in outdoor air, a regeneration unit (25, 26) that desorbs moisture supplied to a target space (I) from the adsorption member (22), and a control unit (C) that sets an output of the regeneration unit (25, 26) to a first value when the absolute humidity of the outdoor air is a first humidity, and sets an output of the regeneration unit (25, 26) to a second value smaller than the first value when the absolute humidity of the outdoor air is a second humidity lower than the first humidity.

[0007] In the first aspect, when the absolute humidity of the outdoor air is a second humidity lower than the first humidity, the control unit (C) sets the output of the regenerating unit (25, 26) to a second value lower than the first value. This makes it possible to reduce the output of the regenerating unit (25, 26) under conditions in which the amount of moisture adsorbed by the adsorption member (22) is relatively small. As a result, it is possible to prevent unnecessary consumption of energy required for regenerating the adsorption member (22).

[0008] In the second embodiment, in the first embodiment, the regenerating section includes a heater (25).

[0009] In the second aspect, the output of the heater (25) can be reduced under conditions in which the amount of moisture adsorbed by the adsorption member (22) is relatively small.

[0010] In a third aspect, in the first or second aspect, the regeneration unit includes a first fan (26) that transports air containing moisture desorbed from the adsorption member (22) to the target space (I).

[0011] In the third aspect, the output of the fan () can be reduced under conditions in which the amount of moisture adsorbed by the adsorption member (22) is relatively small.

[0012] A fourth aspect is any one of the first to third aspects, further comprising a second fan (23) that transports outdoor air containing moisture to be adsorbed by the adsorption member (22), and the control unit (C) increases the airflow rate of the second fan (23) when the absolute humidity of the outdoor air is the second humidity.

[0013] In the fourth aspect, when the absolute humidity of the outdoor air is a second humidity that is lower than the first humidity, the airflow rate of the second fan (23) is increased. This makes it possible to increase the amount of moisture adsorbed by the adsorption member (22) when the humidity of the outdoor air is relatively low.

[0014] In a fifth aspect, in the fourth aspect, when the absolute humidity of the outdoor air is the second humidity, the control unit (C) increases the airflow rate of the second fan (23), and thereafter sets the output of the regeneration unit (25, 26) to the second value.

[0015] In the fifth aspect, when the absolute humidity of the outdoor air is a second humidity lower than the first humidity, the airflow rate of the second fan (23) is first increased. This makes it possible to increase the amount of moisture adsorbed by the adsorption member (22) when the outdoor air has a relatively low humidity. However, when the outdoor air has a relatively low humidity, the amount of moisture adsorbed by the adsorption member (22) may be insufficient. In response to this, the control unit (C) reduces the output of the regeneration unit (25, 26), thereby preventing the output of the regeneration unit (25, 26) from becoming excessive.

[0016] A sixth aspect is any one of the first to fifth aspects, in which, when there is a request to increase the amount of humidification of the target space (I) under a condition where the absolute humidity of the outdoor air is the first humidity, the control unit (C) sets the output of the regenerating unit (25, 26) to a first value that is larger than the output when there is no request. In the sixth aspect, under a condition where the humidity of the outdoor air is relatively high, the control unit (C) sets the output of the regenerating unit (25, 26) to a first value that is larger than the second value. Here, the first value when there is a request for the amount of humidification is larger than the first value when there is no request for the amount of humidification. Furthermore, under a condition where the humidity of the outdoor air is relatively high, the amount of moisture adsorbed by the adsorption member (22) also increases. Therefore, by relatively increasing the output of the regenerating unit (25, 26) in this manner, the amount of moisture supplied to the target space (I) increases, and the request to increase the amount of humidification can be met.

[0017] In a seventh aspect, in the sixth aspect, the control unit (C) determines a required amount of humidification based on the humidity of the air in the target space (I), and controls an output of the regeneration unit (25, 26) based on the absolute humidity of the outdoor air and the required amount of humidification.

[0018] The control unit (C) of the seventh aspect controls the output of the regenerator (25, 26) based on the humidity of the outdoor air and the required amount of humidification, thereby achieving humidification control taking into consideration the amount of moisture adsorbed by the adsorption member (22) and the required amount of humidification in the target space (I).

[0019] In an eighth aspect, in any one of the first to seventh aspects, the present invention further includes a notification unit (41) that notifies information relating to a decrease in the humidification capacity when there is a request to increase the amount of humidification in the target space (I) and the absolute humidity of the outdoor air is the second humidity.

[0020] In the eighth aspect, when the absolute humidity of the outdoor air is a relatively low second humidity, the control unit (C) sets the output of the regenerator (25, 26) to a relatively small second value. This makes it possible to prevent unnecessary consumption of energy required for regenerating the adsorption member (22). On the other hand, if the output of the regenerator (25, 26) is reduced in this manner, there is a possibility that a request to increase the amount of humidification cannot be met. Therefore, in this aspect, the notification unit (41) provides information related to a decrease in the humidification capacity.

[0021] In a ninth aspect, the control unit (C) limits the output of the regeneration unit (25, 26) so that the absolute humidity of the air in the target space (I) becomes equal to or lower than a predetermined value.

[0022] In the ninth aspect, when the absolute humidity of the air in the target space (I) falls below a predetermined value, the control unit (C) limits the output of the regeneration unit (25, 26), thereby preventing moisture in the air supplied to the target space (I) from condensing. [Brief description of the drawings]

[0023] [Figure 1]FIG. 1 is a schematic overall configuration diagram of an air conditioner according to an embodiment. [Diagram 2] FIG. 2 is a configuration diagram showing refrigerant piping and air flow in the air conditioner. [Diagram 3] FIG. 3 is a vertical cross-sectional view of the air conditioning indoor unit. [Figure 4] FIG. 4 is a block diagram including the main elements of an air conditioning device. [Diagram 5] FIG. 5 is a flowchart of the humidification operation. [Figure 6] FIG. 6 is a flowchart of the humidification operation in the first modification. [Figure 7] FIG. 7 is a flowchart of the humidification operation in the second modification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the present disclosure is not limited to the embodiments shown below, and various modifications are possible within the scope of the technical idea of ​​the present disclosure. Since each drawing is intended to conceptually explain the present disclosure, dimensions, ratios, or numbers may be exaggerated or simplified as necessary for easy understanding.

[0025] Exemplary embodiments will now be described in detail with reference to the accompanying drawings.

[0026] (1) Overview of air conditioning system configuration The air conditioner (1) is an example of a humidifier. The air conditioner (1) adjusts the temperature and humidity of air in a target space. The target space in this example is an indoor space (I). As shown in FIG. 1, the air conditioner (1) has an air conditioner outdoor unit (10) and an air conditioner indoor unit (30). The air conditioner outdoor unit (10) is installed outdoors, and the air conditioner indoor unit (30) is installed indoors. The air conditioner (1) is a pair type having one air conditioner indoor unit (30) and one air conditioner outdoor unit (10). The air conditioner (1) has a humidifier unit (20). The air conditioner (1) has a function of humidifying air. The air conditioner (1) further has a function of ventilating the indoor space (I).

[0027] As shown in Figs. 1 and 2, the air conditioner (1) has a hose (2), a liquid connection pipe (3), and a gas connection pipe (4). The air conditioning indoor unit (30) and the humidification unit (20) are connected to each other via the hose (2). The air conditioning indoor unit (30) and the air conditioning outdoor unit (10) are connected to each other via the liquid connection pipe (3) and the gas connection pipe (4). This forms a refrigerant circuit (R). The refrigerant circuit (R) is filled with a refrigerant. The refrigerant is difluoromethane. However, the refrigerant is not limited to difluoromethane. The refrigerant circuit (R) performs a vapor compression refrigeration cycle.

[0028] The refrigerant circuit (R) mainly includes a compressor (12), an outdoor heat exchanger (14), an expansion valve (15), a four-way switching valve (16), and an indoor heat exchanger (34).

[0029] The refrigerant circuit (R) performs a first refrigeration cycle or a second refrigeration cycle in response to switching of the four-way switching valve (16). The first refrigeration cycle is a refrigeration cycle in which the indoor heat exchanger (34) functions as an evaporator and the outdoor heat exchanger (14) functions as a radiator. The second refrigeration cycle is a refrigeration cycle in which the outdoor heat exchanger (14) functions as a radiator and the indoor heat exchanger (34) functions as an evaporator.

[0030] (2) Detailed configuration (2-1) Air conditioner outdoor unit As shown in Figures 2 and 4, the air conditioner outdoor unit (10) has an outdoor casing (11), a compressor (12), an outdoor fan (13), an outdoor heat exchanger (14), an expansion valve (15), and a four-way switching valve (16).

[0031] The outdoor casing (11) accommodates a compressor (12), an outdoor fan (13), an outdoor heat exchanger (14), an expansion valve (15), and a four-way switching valve (16). An outdoor suction port (11a) and an outdoor outlet (11b) are formed in the outdoor casing (11). The outdoor suction port (11a) is formed on the rear side of the outdoor casing (11). The outdoor suction port (11a) is an opening for drawing in outdoor air. The outdoor outlet (11b) is formed on the front side of the outdoor casing (11). The outdoor outlet (11b) is an opening for blowing out air that has passed through the outdoor heat exchanger (14). An outdoor air passage (11c) is formed inside the outdoor casing (11) from the outdoor suction port (11a) to the outdoor outlet (11b).

[0032] The compressor (12) sucks in and compresses a low-pressure gas refrigerant. The compressor (12) is driven by a first motor (M1). The compressor (12) is a variable displacement compressor in which power is supplied to the first motor (M1) from an inverter circuit. The compressor (12) is configured so that its operating capacity can be changed by adjusting the operating frequency (rotation speed) of the first motor (M1).

[0033] The outdoor fan (13) is disposed in the outdoor air passage (11c). The outdoor fan (13) is rotated by being driven by the second motor (M2). Air delivered by the outdoor fan (13) is sucked into the outdoor casing (11) through the outdoor suction port (11a). This air flows through the outdoor air passage (11c) and is blown out of the outdoor casing (11) through the outdoor outlet port (11b). The outdoor fan (13) delivers the outdoor air so as to pass through the outdoor heat exchanger (14).

[0034] The outdoor heat exchanger (14) is disposed in the outdoor air passage (11c) upstream of the outdoor fan (13). In this example, the outdoor heat exchanger (14) is a fin-and-tube type heat exchanger. The outdoor heat exchanger (14) is an example of a heat source heat exchanger. The outdoor heat exchanger (14) exchanges heat between the refrigerant flowing therethrough and the outdoor air transported by the outdoor fan (13).

[0035] The expansion valve (15) is an example of a pressure reducing mechanism. The expansion valve (15) reduces the pressure of the refrigerant. The expansion valve (15) is an electrically operated expansion valve whose opening is adjustable. The pressure reducing mechanism may be a temperature sensitive expansion valve, an expander, a capillary tube, or the like. The expansion valve (15) may be provided in the air conditioner indoor unit (30) as long as it is connected to a liquid line of the refrigerant circuit (R).

[0036] The four-way switching valve (16) is an example of a flow path switching mechanism. The four-way switching valve (16) has a first port (P1), a second port (P2), a third port (P3), and a fourth port (P4). The first port (P1) is connected to the discharge portion of the compressor (12). The second port (P2) is connected to the suction portion of the compressor (12). The third port (P3) is connected to the gas end of the outdoor heat exchanger (14). The fourth port (P4) is connected to the gas connection pipe (4).

[0037] The four-way switching valve (16) can be switched between a first state (a state indicated by a solid line in FIG. 2) and a second state (a state indicated by a dashed line in FIG. 2). In the first state, the four-way switching valve (16) communicates between the first port (P1) and the third port (P3) and also communicates between the second port (P2) and the fourth port (P4). In the second state, the four-way switching valve (16) communicates between the first port (P1) and the fourth port (P4) and also communicates between the second port (P2) and the third port (P3).

[0038] (2-2) Humidification unit The humidification unit (20) is installed outdoors. In this example, the humidification unit (20) is integrated with the air conditioning outdoor unit (10). The humidification unit (20) sends moisture in the outdoor air to the air conditioning indoor unit (30). The humidification unit (20) includes a humidification casing (21), a humidification rotor (22), a second fan (23), a switching damper (24), a heater (25), and a first fan (26).

[0039] The humidification casing (21) is attached integrally to the outdoor casing (11). The humidification casing (21) houses a humidification rotor (22), a second fan (23), a switching damper (24), a heater (25), and a first fan (26). The humidification casing (21) is formed with a humidification inlet (21a), a humidification exhaust port (21b), and an intake / exhaust port (21c). The humidification inlet (21a) and the intake / exhaust port (21c) are formed on the rear side of the humidification casing (21). The humidification exhaust port (21b) is formed on the front side of the humidification casing (21).

[0040] The humidification intake port (21a) is an opening for drawing in outdoor air. The humidification exhaust port (21b) is an opening for discharging air after moisture has been added to the humidification rotor (22). The intake and exhaust port (21c) is an opening for drawing in outdoor air or discharging air sent from inside the room. A first passage (27) extending from the humidification intake port (21a) to the humidification exhaust port (21b) is formed inside the humidification casing (21). A second passage (28) extending from the intake and exhaust port (21c) to a connection port (21d) is formed inside the humidification casing (21). A hose (2) is connected to the connection port (21d).

[0041] The humidification rotor (22) is disposed across the first passage (27) and the second passage (28). The humidification rotor (22) is an adsorbent that adsorbs moisture in the air. The humidification rotor (22) is, for example, a disk-shaped humidity control rotor having a honeycomb structure. The humidification rotor (22) holds an adsorbent such as silica gel, zeolite, or alumina. The adsorbent has the property of adsorbing moisture in the air. The moisture absorbent has the property of desorbing the adsorbed moisture when heated.

[0042] The humidification rotor (22) is rotated by being driven by the third motor (M3). The humidification rotor (22) has a moisture absorption area (22A) that adsorbs moisture in the air and a moisture release area (22B) that desorbs moisture into the air. The moisture absorption area (22A) is formed by a portion of the humidification rotor (22) located in the first passage (27). The moisture release area (22B) is formed by a portion of the humidification rotor (22) located in the second passage (28).

[0043] The second fan (23) is disposed in the first passage (27). The second fan (23) is rotated by being driven by the fourth motor (M4). The second fan (23) is configured such that the air volume can be switched between a plurality of levels by adjusting the rotation speed of the fourth motor (M4). Air delivered by the second fan (23) is sucked into the humidification casing (21) through the humidification inlet (21a). This air flows through the first passage (27) and is discharged to the outside of the humidification casing (21) through the humidification exhaust port (21b). The second fan (23) delivers outdoor air so that the air passes through the moisture absorption region (22A) of the humidification rotor (22). Moisture contained in the outdoor air flowing through the first passage (27) is adsorbed by the moisture absorption region (22A) of the humidification rotor (22).

[0044] The switching damper (24) is disposed in the second passage (28). The switching damper (24) has a first inlet (24a) and a second inlet (24b). The first inlet (24a) communicates with the intake / exhaust port (21c). The second inlet (24b) communicates with a connection port (21d) of the humidification casing (21) for connecting to the hose (2). The switching damper (24) can be switched between a first state and a second state. In the first state, the switching damper (24) has the first inlet (24a) as an inlet for sucking in air and the second inlet (24b) as an outlet for discharging air. In the second state, the switching damper (24) has the second inlet (24b) as an inlet for sucking in air and the first inlet (24a) as an outlet for discharging air. The state of the switching damper (24) is switched by driving the fifth motor (M5).

[0045] The heater (25) is an example of a regenerating section. The heater (25) is disposed in the second passage (28) between the intake / exhaust port (21c) and the switching damper (24). The heater (25) heats the air flowing through the second passage (28). The heater (25) is configured to have a variable output. The temperature of the air passing through the heater (25) changes depending on the output of the heater (25).

[0046] The first fan (26) is disposed between the first entrance (24a) and the second entrance (24b) of the switching damper (24). The first fan (26) is rotated by being driven by the sixth motor (M6). The first fan (26) is configured so that the air volume can be switched between a plurality of levels by adjusting the rotation speed of the sixth motor (M6). The flow of air conveyed by the first fan (26) changes depending on the state of the switching damper (24). Specifically, when the switching damper (24) is in the first state, as shown by the solid arrow in FIG. 2, the air sucked in through the first entrance (24a) flows out through the second entrance (24b). When the switching damper (24) is in the second state, as shown by the dashed arrow in FIG. 2, the air sucked in through the second entrance (24b) flows out through the first entrance (24a).

[0047] (2-3) Air conditioning indoor unit As shown in Figures 1 to 3, the air conditioner indoor unit (30) is installed indoors. The air conditioner indoor unit (30) is a wall-mounted type that is installed on a wall (WL) of a room that forms an indoor space (I). The air conditioner indoor unit (30) includes an indoor casing (31), an indoor fan (32), an air filter (33), an indoor heat exchanger (34), a drain pan (35), and an air direction adjustment unit (36).

[0048] The indoor casing (31) accommodates the indoor fan (32), the air filter (33), the indoor heat exchanger (34), and the drain pan (35). The indoor casing (31) is formed with an indoor suction port (31a) and an indoor air outlet (31b). The indoor suction port (31a) is disposed on the upper side of the indoor casing (31). The indoor suction port (31a) is an opening for drawing in indoor air. The indoor air outlet (31b) is disposed on the lower side of the indoor casing (31). The indoor air outlet (31b) is an opening for blowing out air after heat exchange or air for humidification. An indoor air passage (31c) continuing from the indoor suction port (31a) to the indoor air outlet (31b) is provided inside the indoor casing (31).

[0049] The indoor fan (32) is disposed approximately in the center of the indoor air passage (31c). The indoor fan (32) is an example of a blower. The indoor fan (32) is, for example, a cross-flow fan. The indoor fan (32) is rotated by being driven by the seventh motor (M7). The indoor fan (32) takes in indoor air into the indoor air passage (31c) and transports the air. The air transported by the indoor fan (32) is sucked into the indoor casing (31) through the indoor inlet port (31a). The air flows through the indoor air passage (31c) and is blown out of the indoor casing (31) through the indoor outlet port (31b).

[0050] The indoor fan (32) transports indoor air so as to pass through the indoor heat exchanger (34). The air blown out through the indoor air outlet (31b) is supplied to the indoor space. The indoor fan (32) is configured so that the air volume can be switched between a plurality of levels by adjusting the rotation speed of the seventh motor (M7).

[0051] The air filter (33) is disposed in the indoor air passage (31c) upstream of the indoor heat exchanger (34). The air filter (33) is attached to the indoor casing (31) so that substantially all of the air supplied to the indoor heat exchanger (34) passes through the air filter (33). The air filter (33) collects dust in the air sucked through the indoor suction port (31a).

[0052] The indoor heat exchanger (34) is disposed in the indoor air passage (31c) upstream of the indoor fan (32). In this embodiment, the indoor heat exchanger (34) is a fin-and-tube type heat exchanger. The indoor heat exchanger (34) is an example of a utilization heat exchanger. The indoor heat exchanger (34) exchanges heat between the refrigerant therein and the indoor air transported by the indoor fan (32).

[0053] The drain pans (35) are disposed on the front and rear lower sides of the indoor heat exchanger (34). The drain pans (35) receive condensation water generated inside the indoor casing (31) of the air conditioning indoor unit (30). The condensation water generated on the surfaces of the fins of the indoor heat exchanger (34) flows down along the surfaces due to its own weight and is received in the drain pan (35).

[0054] The airflow direction adjustment section (36) adjusts the direction of air blown out from the indoor air outlet (31b). The airflow direction adjustment section (36) has a flap (37). The flap (37) is in the shape of a long plate extending along the longitudinal direction of the indoor air outlet (31b). The flap (37) rotates when driven by a motor. The flap (37) opens and closes the indoor air outlet (31b) as it rotates.

[0055] The flap (37) is configured so that the inclination angle can be changed stepwise. In this example, the positions to which the flap (37) can be adjusted include six positions. These six positions include a closed position and five open positions. The five open positions include the substantially horizontal blowing position shown in FIG. 3. In the closed position, the flap (37) substantially closes the indoor air outlet (31b). A gap may be formed between the flap (37) in the closed position and the indoor air outlet (31b).

[0056] (2-4) Remote Controller The remote controller (40) is disposed in a position in the room where the user can operate it. The remote controller (40) has a display unit (41) and an input unit (42). The display unit (41) displays predetermined information. The display unit (41) is configured, for example, by a liquid crystal monitor. The predetermined information is information indicating the operating state and set temperature of the air conditioner (1). The input unit (42) accepts input operations from the user to make various settings. The input unit (42) is configured, for example, by a plurality of physical switches. The user can set the operating mode, target temperature, target humidity, etc. of the air conditioner (1) by operating the input unit (42) of the remote controller (40).

[0057] The display unit (41) is an example of a notification unit, and notifies information that the humidification capacity is decreasing during the humidification operation, the details of which will be described later.

[0058] (2-5) Sensors 2, the air conditioner (1) has a plurality of sensors. The plurality of sensors includes a sensor for the refrigerant and a sensor for the air. The refrigerant sensors include a sensor for detecting the temperature and pressure of a high-pressure refrigerant and a sensor for detecting the temperature and pressure of a low-pressure refrigerant (not shown).

[0059] The air sensors include an outdoor air temperature sensor (51), an outdoor air humidity sensor (52), an indoor air temperature sensor (53), and an indoor air humidity sensor (54). The outdoor air temperature sensor (51) is provided in the air conditioner outdoor unit (10). The outdoor air temperature sensor (51) detects the temperature of outdoor air. The outdoor air humidity sensor (52) is provided in the humidification unit (20). The outdoor air humidity sensor (52) detects the humidity of outdoor air. In this example, the outdoor air humidity sensor (52) detects the relative humidity of the outdoor air, but may detect the absolute humidity. The indoor air temperature sensor (53) and the indoor air humidity sensor (54) are provided in the air conditioner indoor unit (30). The indoor air temperature sensor (53) detects the temperature of indoor air. The indoor air humidity sensor (54) detects the humidity of indoor air. The indoor air humidity sensor (54) detects the relative humidity of indoor air, but may detect the absolute humidity.

[0060] (2-6) Control section The air conditioner (1) has a control unit (C). The control unit (C) controls the operation of the refrigerant circuit (R). The control unit (C) controls the operation of the air conditioning outdoor unit (10), the humidification unit (20), and the air conditioning indoor unit (30). The control unit (C) includes an outdoor control unit (OC), an indoor control unit (IC), and a remote controller (40). The outdoor control unit (OC) is provided in the air conditioning outdoor unit (10). The indoor control unit (IC) is provided in the air conditioning indoor unit (30). The indoor control unit (IC) and the outdoor control unit (OC) each include an MCU (Micro Control Unit), an electric circuit, and an electronic circuit. The MCU includes a CPU (Central Processing Unit), a memory, and a communication interface. The memory stores various programs to be executed by the CPU.

[0061] The outdoor control unit (OC) receives a detection value of the outdoor air temperature sensor (51) and a detection value of the outdoor air humidity sensor (52).

[0062] The outdoor control unit (OC) is connected to the compressor (12), the outdoor fan (13), the expansion valve (15), and the four-way switching valve (16). The outdoor control unit (OC) outputs control signals for starting and stopping the operation of the air conditioning outdoor unit (10) to the compressor (12), the outdoor fan (13), the expansion valve (15), and the four-way switching valve (16). The outdoor control unit (OC) controls the operating frequency of the first motor (M1) of the compressor (12), the rotation speed of the second motor (M2) of the outdoor fan (13), the state of the four-way switching valve (16), and the opening degree of the expansion valve (15).

[0063] The outdoor control unit (OC) is further connected to the humidification rotor (22), the second fan (23), the switching damper (24), the heater (25), and the first fan (26). The outdoor control unit (OC) outputs control signals for starting and stopping the operation of the humidification unit (20) to the humidification rotor (22), the second fan (23), the switching damper (24), the first fan (26), and the heater (25). The outdoor control unit (OC) controls the rotation speeds of the fourth motor (M4) of the second fan (23) and the sixth motor (M6) of the first fan (26), the operation of the humidification rotor (22) and the switching damper (24), and the output of the heater (25).

[0064] The indoor control unit (IC) receives a detection value of the indoor air temperature sensor (53) and a detection value of the indoor air humidity sensor (54).

[0065] The indoor control unit (IC) is connected to the remote controller (40) so as to be able to communicate with the indoor control unit (IC). The indoor control unit (IC) is connected to the indoor fan (32). The indoor control unit (IC) outputs a control signal for starting and stopping the operation of the air conditioning indoor unit (30) to the indoor fan (32). The indoor control unit (IC) controls the rotation speed of the seventh motor (M7) of the indoor fan (32). The indoor control unit (IC) is connected to the outdoor control unit (OC) so as to be able to communicate with the indoor control unit (OC).

[0066] The remote controller (40) is connected to the indoor control unit (IC) so as to be able to communicate with it. The remote controller (40) transmits an instruction signal to the indoor control unit (IC) instructing the operation of the air conditioner (1) in response to a user's operation on the input unit (42). Upon receiving the instruction signal from the remote controller (40), the indoor control unit (IC) transmits the instruction signal to the outdoor control unit (OC). The indoor control unit (IC) controls the operation of the above-mentioned devices of the air conditioning indoor unit (30) in accordance with the instruction signal. Upon receiving the instruction signal from the indoor control unit (IC), the outdoor control unit (OC) controls the operation of the above-mentioned devices of the air conditioning outdoor unit (10) and the humidification unit (20).

[0067] (3) Driving behavior The operation modes performed by the air conditioner (1) include cooling operation, heating operation, humidification operation, air supply operation, and exhaust operation. The control unit (C) executes these operations based on instruction signals from the remote controller (40).

[0068] (3-1) Cooling operation The cooling operation is an operation in which the indoor air is cooled by the indoor heat exchanger (34) serving as an evaporator. The set temperature for the cooling operation is instructed by the remote controller (40) at the start of or during the cooling operation. In the cooling operation, the control unit (C) operates the compressor (12), the outdoor fan (13), and the indoor fan (32). The control unit (C) sets the four-way switching valve (16) to the first state. The control unit (C) appropriately adjusts the opening of the expansion valve (15). In the cooling operation, a first refrigeration cycle is performed in which the compressed refrigerant releases heat in the outdoor heat exchanger (14) and evaporates in the indoor heat exchanger (34).

[0069] In the cooling operation, the control unit (C) adjusts the target evaporation temperature of the indoor heat exchanger (34) so ​​that the indoor temperature detected by the indoor air temperature sensor (53) converges to a set temperature. The control unit (C) controls the rotation speed of the compressor (12) so that the evaporation temperature of the refrigerant in the indoor heat exchanger (34) converges to the target evaporation temperature. In the cooling operation, air delivered by the indoor fan (32) is cooled as it passes through the indoor heat exchanger (34). The air cooled by the indoor heat exchanger (34) is supplied to the indoor space (I) from the indoor air outlet (31b) of the air conditioner indoor unit (30).

[0070] (3-2) Heating operation The heating operation is an operation in which the indoor air is heated by the indoor heat exchanger (34) serving as a radiator. The set temperature for the heating operation is instructed by the remote controller (40) at the start of or during the heating operation. In the heating operation, the control unit (C) operates the compressor (12), the outdoor fan (13), and the indoor fan (32). The control unit (C) sets the four-way switching valve (16) to the second state. The control unit (C) appropriately adjusts the opening of the expansion valve (15). In the heating operation, a second refrigeration cycle is performed in which the refrigerant compressed by the compressor (12) radiates heat in the indoor heat exchanger (34) and evaporates in the outdoor heat exchanger (14).

[0071] In the heating operation, the control unit (C) adjusts the target condensing temperature of the indoor heat exchanger (34) so ​​that the indoor temperature detected by the indoor air temperature sensor (53) converges to a set temperature. The control unit (C) controls the rotation speed of the compressor (12) so that the condensing temperature of the refrigerant in the indoor heat exchanger (34) converges to the target condensing temperature. In the heating operation, air delivered by the indoor fan (32) is heated as it passes through the indoor heat exchanger (34). The air heated in the indoor heat exchanger (34) is supplied to the indoor space (I) from the indoor air outlet (31b) of the air conditioner indoor unit (30).

[0072] (3-3) Humidification operation The humidification operation is an operation in which the humidification unit (20) humidifies the indoor air. In the humidification operation, as shown by the solid arrow in FIG. 2, outdoor air is sent to the air conditioner indoor unit (30) through the hose (2). In the humidification operation, the control unit (C) operates the heater (25), the humidification rotor (22), and the second fan (23). The control unit (C) operates the first fan (26). The control unit (C) sets the switching damper (24) to the first state.

[0073] In the humidification operation, outdoor air conveyed by the second fan (23) passes through the moisture absorption region (22A) of the humidification rotor (22), and moisture contained in the outdoor air is adsorbed in the moisture absorption region (22A) of the humidification rotor (22). The portion of the humidification rotor (22) that has adsorbed moisture as the moisture absorption region (22A) moves to the second passage (28) as the humidification rotor (22) rotates, and forms a moisture release region (22B). Outdoor air heated by the heater (25) passes through the moisture release region (22B) of the humidification rotor (22), and moisture is desorbed from the humidification rotor (22) into the heated air. In the humidification operation, the highly humidified air to which moisture has been added by the humidification rotor (22) is sent to the air conditioning indoor unit (30) through the hose (2), and is supplied to the indoor space (I) through the indoor air outlet (31b) of the air conditioning indoor unit (30). The humidification operation may be performed simultaneously with the heating operation.

[0074] (3-4) Air supply operation The air supply operation is an operation for supplying outdoor air to the room. In the air supply operation, as shown by the solid arrow in FIG. 2, outdoor air is sent to the air conditioner indoor unit (30) through the hose (2). In the air supply operation, the control unit (C) stops the heater (25), the humidification rotor (22), and the second fan (23), and operates the first fan (26). The control unit (C) sets the switching damper (24) to the first state. In the air supply operation, the outdoor air transported by the first fan (26) is sent to the air conditioner indoor unit (30) through the hose (2) and supplied to the indoor space (I) from the indoor air outlet (31b) of the air conditioner indoor unit (30). The air supply operation may be performed simultaneously with the cooling operation or the heating operation. (3-5) Exhaust operation The exhaust operation is an operation in which indoor air is exhausted to the outside. In the exhaust operation, as shown by the dashed arrow in FIG. 2, indoor air is sent to the humidification unit (20) through the hose (2). In the exhaust operation, the control unit (C) stops the heater (25), the humidification rotor (22), and the second fan (23), and operates the first fan (26). In the exhaust operation, the indoor air transported by the first fan (26) is sent to the humidification unit (20) through the hose (2) and exhausted to the outside from the intake / exhaust port (21c) of the humidification unit (20). The exhaust operation may be performed simultaneously with the cooling operation or the heating operation.

[0075] (4) Example of control taking into account the absolute humidity of outdoor air The air conditioner (1) of this example performs control in consideration of the absolute humidity of the outdoor air during the above-mentioned humidification operation (including simultaneous operation of the humidification operation and the heating operation).

[0076] (4-1) Issues When the humidification operation is performed under conditions where the absolute humidity of the outdoor air (hereinafter also referred to as the outdoor air humidity (Ho)) is low, the moisture in the air flowing from the second passages (28) to the moisture absorption region (22A) of the humidification rotor (22) decreases. Under such conditions, the amount of moisture adsorbed by the adsorbent in the moisture absorption region (22A) decreases. In this case, the amount of moisture that can be desorbed in the moisture discharge region (22B) of the humidification rotor (22) also decreases. As a result, the output of the heater (25) becomes excessive with respect to the amount of moisture that can be desorbed in the moisture discharge region (22B), which may result in unnecessary consumption of power by the heater (25).

[0077] On the other hand, under conditions of high outdoor humidity, a large amount of moisture is adsorbed by the adsorbent of the humidification rotor (22). Under such conditions, if the output of the heater (25) is insufficient relative to the amount of moisture that can be desorbed in the moisture discharging region (22B), the moisture adsorbed in the humidification rotor (22) may not be fully utilized for humidifying the indoor space (I). In addition, the energy (e.g., the power of the second fan (23)) used for adsorbing the moisture in the moisture discharging region (22B) may be wasted.

[0078] (4-2) Control example Taking the above-mentioned problems into consideration, the air conditioner (1) of the present embodiment performs the following control based on the outside air humidity (Ho).

[0079] 5, when the humidification operation starts, the control unit (C) acquires the absolute humidity of the outdoor air in step S31. The control unit (C) in this example acquires the absolute humidity of the outdoor air (outdoor air humidity (Ho)) based on the relative humidity of the outdoor air detected by the outdoor air humidity sensor (52) and the outdoor air temperature detected by the outdoor air temperature sensor (51).

[0080] In step S32, the control unit (C) compares the outdoor air humidity (Ho) with a first threshold value. The first threshold value is a value for determining whether the outdoor air is high humidity or low humidity. Humidity higher than the first threshold value corresponds to a first humidity, and humidity equal to or lower than the first threshold value corresponds to a second humidity. The first threshold value is, for example, 0.0054 (kg / kg (DA). If the outdoor air humidity (Ho) is equal to or lower than the first threshold value (NO in step S32), in other words, if the outdoor air humidity (Ho) is a second humidity lower than the first humidity, the control unit (C) performs the process of step S33.

[0081] In step S33, the control unit (C) sets the output of the heater (25) to a second value (30%). The second value is an output smaller than a first value, the details of which will be described later. When the outside air humidity (Ho) is the second humidity, the amount of moisture adsorbed by the adsorbent of the humidification rotor (22) decreases, as described above. By reducing the output of the heater (25), it is possible to prevent the output of the heater (25) from becoming excessively large. Here, the "output of the heater (25)" corresponds to the amount of heat generated by the heater (25).

[0082] Next, in step S34, the control unit (C) determines whether or not there is a request to increase the amount of humidification. In other words, a request to increase the amount of humidification is a request to increase the humidification capacity of the air conditioner (1). The condition that there is a request to increase the amount of humidification is met, for example, when the humidity detected by the indoor air humidity sensor (54) is lower than the set humidity (target humidity) input to the remote controller (40).

[0083] When the control unit (C) determines in step S34 that there is a request to increase the amount of humidification, in step S35, the display unit (41) of the remote controller (40) notifies the user of information that the humidification capacity is decreasing. Specifically, the display unit (41) displays information indicating the decrease in the humidification capacity by characters, figures, icons, or the like. Information indicating the decrease in the humidification capacity includes, for example, information that it is taking a long time to humidify the target space or that the humidity of the outdoor air is low.

[0084] In step S33, if the output of the heater (25) is set to a relatively small value, the request for an increase in the amount of humidification cannot be fully met. The user can be notified of this by the notification unit (41), which can prevent the user from misunderstanding that some abnormality has occurred in the air conditioner (1) or from feeling dissatisfied with the current humidification capacity.

[0085] In step S32, if the outside air humidity (Ho) is higher than the first threshold value (YES in step S32), in other words, if the outside air humidity (Ho) is the first humidity higher than the second humidity, the control unit (C) performs the process of step S36.

[0086] If the control unit (C) determines in step S36 that there is no request to increase the amount of humidification, then in step S37, the control unit (C) sets the output of the heater (25) to a predetermined output (e.g., 70%), which is a first value greater than the second value. Under conditions in which the outdoor air humidity (Ho) is greater than the first threshold value, a large amount of moisture is adsorbed by the adsorbent of the humidification rotor (22). Therefore, even if the output of the heater (25) is set to be greater than the second value, it is possible to prevent the output of the heater (25) from becoming excessive. In other words, the output of the heater (25) can be efficiently used to humidify the target space (I).

[0087] When the control unit (C) determines in step S36 that there is a request to increase the amount of humidification, in step S38, the control unit (C) sets the output of the heater (25) to a predetermined output (e.g., 100%) which is a first value greater than the second value. When the outside air humidity is the first humidity and there is a request to increase the amount of humidification, the control unit (C) sets the output of the heater (25) to a first value (e.g., 100%) greater than the output of the heater (25) in step S37 when there is no request to increase the amount of humidification (e.g., 70%).

[0088] Under conditions where the outdoor air humidity (Ho) is greater than the first threshold value, the outdoor air has high humidity, and a large amount of moisture is adsorbed by the adsorbent of the humidification rotor (22). Therefore, by increasing the output of the heater (25) to a value greater than the output when there is no request for an increase in the amount of humidification, the moisture adsorbed by the adsorbent can be sufficiently desorbed. As a result, air containing a large amount of moisture can be supplied to the indoor space (I), and the request for an increase in the amount of humidification can be quickly met. This effect is particularly noticeable in this example, since the output of the heater (25) is set to the maximum output.

[0089] (5) Features (5-1) The air conditioner (1) includes a humidification rotor (22) that adsorbs moisture in the outdoor air, a heater (25) that desorbs moisture from the humidification rotor (22) to be supplied to an indoor space (I), and a control unit (C) that sets an output of the heater (25) to a first value when the absolute humidity of the outdoor air is a first humidity, and sets an output of the heater (25) to a second value smaller than the first value when the absolute humidity of the outdoor air is a second humidity lower than the first humidity.

[0090] Specifically, when the outside air humidity (Ho) is the second humidity and the amount of moisture adsorbed by the humidification rotor (22) is small, in step S33, the control unit (C) sets the output of the heater (25) to a first value (e.g., 30%) that is smaller than the second value. This makes it possible to prevent the output of the heater (25) from becoming excessive with respect to the amount of moisture that can be desorbed from the humidification rotor (22). This makes it possible to prevent unnecessary consumption of energy required for regenerating the humidification rotor (22).

[0091] When the outdoor air humidity (Ho) is the first humidity and the amount of moisture adsorbed by the humidification rotor (22) is small, in step S34, the control unit (C) sets the output of the heater (25) to a second value (e.g., 70% in step S37 or 100% in step S38) that is greater than the first value. This makes it possible to prevent the output of the heater (25) from being insufficient for the moisture adsorbed by the humidification rotor (22). As a result, the moisture adsorbed by the humidification rotor (22) can be fully utilized for humidifying the indoor space (I). This makes it possible to prevent unnecessary consumption of power (e.g., power for the second fan (23)) that is consumed to adsorb moisture in the humidification rotor (22).

[0092] (5-2) When there is a request to increase the amount of humidification of the indoor space (I) under a condition where the absolute humidity of the outdoor air is a first humidity, the control unit (C) sets the output of the heater (25) to a first value that is greater than the output when there is no request.

[0093] Specifically, when the absolute humidity of the outdoor air is at the first humidity level, and there is a request to increase the amount of humidification (YES in step S36), the control unit (C) increases the output of the heater (25) (step S38) compared to when there is no request to increase the amount of humidification (NO in step S36). This allows a sufficient amount of moisture adsorbed on the humidification rotor (22) to be fully utilized for humidifying the indoor space (I) when there is a request to increase the amount of humidification. As a result, the request to increase the amount of humidification can be quickly responded to.

[0094] (5-3) The air conditioning apparatus (1) includes a notification section (41) that notifies information relating to a decrease in humidification capacity when there is a request to increase the amount of humidification in the target space (I) and the absolute humidity of the outdoor air is a second humidity.

[0095] In step S33, if the output of the heater (25) is reduced, it may not be possible to fully respond to a request for an increase in the amount of humidification. In this case, the display unit (41), which is a notification unit, notifies a user or the like that the humidification capacity has decreased. As a result, it is possible to prevent the user or the like from misunderstanding that some abnormality has occurred in the air conditioner (1) or from feeling dissatisfied with the current humidification capacity.

[0096] (6) Variations The above-described embodiment may have the following modified configurations. In the following description, differences from the above-described embodiment will be described.

[0097] (6-1) Variation 1 In the first modification, when the outside air humidity (Ho) is a second humidity, the control unit (C) first increases the airflow rate of the second fan (23), and then sets the output of the regenerator (25, 26) to a second value. An example of control according to the first modification is shown in FIG.

[0098] If the outside air humidity (Ho) is equal to or lower than the first threshold value (NO in step S32), in step S41, the control unit (C) increases the airflow rate of the second fan (23) by a predetermined amount. In other words, in step S41, the control unit (C) increases the rotation speed of the fourth motor (M4) of the second fan (23). When the airflow rate of the second fan (23) increases, the amount of moisture adsorbed by the adsorbent of the humidification rotor (22) increases.

[0099] Next, in step S42, the control unit (C) determines whether or not the output of the heater (25) is excessive. The determination in step S42 is based on, for example, the current air volume of the second fan (23), the outside air humidity (Ho), the air volume of the first fan (26), the output of the heater (25), the amount of humidification required for the indoor space (I), etc. The amount of humidification required for the indoor space (I) is calculated based on the set humidity (target humidity) input to the remote controller (40) and the indoor air humidity detected by the indoor air humidity sensor (54).

[0100] If it is determined in step S42 that the output of the heater (25) is not excessive, the control unit (C) sets the output of the heater (25) to a first value that is greater than the second value. In this example, the process proceeds to, for example, step S37, where the control unit (C) sets the output of the regenerator (25, 26) to 70%, which is the first value. Instead of step S37, the control unit (C) may adjust the output of the heater (25) so as to process the required amount of humidification.

[0101] If it is determined in step S42 that the output of the heater (25) is excessive, the control unit (C) performs the process of step S43. In step S43, the control unit (C) determines whether the air volume of the second fan (23) is maximum. If the air volume of the second fan (23) is not maximum, the control unit (C) increases the air volume of the second fan (23) in step 41. If the air volume of the second fan (23) is maximum in step S43, it can be determined that the output of the heater (25) is excessive even if the air volume of the second fan (23) is maximized. Therefore, in step S44, the control unit (C) sets the output of the heater (25) to a second value (e.g., 40%) that is smaller than the first value. In step S44, it is preferable that the control unit (C) increases the second value as the air volume of the second fan (23) increases. This is because, as the air volume of the second fan (23) increases, the amount of moisture adsorbed by the adsorbent of the humidification rotor (22) increases.

[0102] As described above, in the first modification, when the outside air humidity (Ho) is the second humidity, first, the airflow rate of the second fan (23) is increased. This increases the amount of moisture that can be adsorbed by the humidification rotor (22), thereby preventing the heater (25) from becoming overpowered. This effect is particularly noticeable in this example, when the airflow rate of the second fan (23) is maximized.

[0103] Thereafter, when the output of the heater (25) becomes excessive even though the air volume of the second fan (23) is at a maximum, the control unit (C) sets the output of the heater (25) to the second value. This makes it possible to prevent the amount of humidification in the room space (I) from becoming insufficient due to a decrease in the output of the heater (25).

[0104] (6-2) Variation 2 In the second modification, the control unit (C) forcibly limits the output of the heater (25) so that the humidity of the indoor air in the room space (I), which is the target space (hereinafter also referred to as the indoor air humidity (Hi)), becomes equal to or lower than a predetermined value. An example of control according to the second modification is shown in FIG.

[0105] 7, in step S51, the control unit (C) determines whether the inside air humidity (Hi) is greater than a second threshold value. Here, the second threshold value is a predetermined value set to suppress condensation of moisture in the air flowing through the hose (2) and the inside of the air conditioning indoor unit (30). The inside air humidity (Hi) is detected by the inside air humidity sensor (54).

[0106] If the indoor air humidity (Hi) is greater than the second threshold value in step S51, the control unit (C) limits the output of the heater (25) to a predetermined value or less in step S52. This reduces the humidity of the air supplied from the humidification rotor (22) to the target space (I). This makes it possible to suppress condensation of moisture in the air flowing through the hose (2) and the air conditioning indoor unit (30).

[0107] (6-3) Variation 3 In the third modification, the control unit (C) controls the output of the heater (25) based on the outdoor air humidity (Ho) and the required amount of humidification. For example, when the outdoor air humidity (Ho) is as low as the second humidity and the required amount of humidification cannot be satisfied by the amount of moisture adsorbed by the humidification rotor (22) alone, the control unit (C) sets the output of the heater (25) to a second value (e.g., 30%). On the other hand, when the outdoor air humidity (Ho) is as low as the second humidity but the required amount of humidification can still be satisfied, the control unit (C) sets the output of the heater (25) to a second value (e.g., 40%) that is higher than the output of the heater (25) when the required amount of humidification cannot be satisfied.

[0108] The control unit (C) of the third modification may adjust the first value, which is larger than the second value, in accordance with the required amount of humidification when the outside air humidity (Ho) is as high as a first humidity.

[0109] (7) Other embodiments The regenerating unit in this embodiment is a heater 25. The regenerating unit may include a first fan 26, and the control unit 3 may control the output of the regenerating unit by adjusting the air volume of the first fan 26.

[0110] The adsorption member in the embodiment is a humidification rotor (22) having an adsorbent. The adsorption member may be an adsorption element carrying an adsorbent or a heat exchanger carrying an adsorbent (adsorption heat exchanger). The adsorption heat exchanger heats the adsorbent with a refrigerant or a heat medium flowing therethrough, thereby desorbing moisture from the adsorbent.

[0111] The notification unit in this embodiment is a display unit 41. The notification unit may be a sound generating unit that notifies the user of a decrease in humidification capacity by sound, or a light emitting unit that notifies the user of a decrease in humidification capacity by light.

[0112] Although the embodiments and modifications have been described above, it will be understood that various modifications of form and details are possible without departing from the spirit and scope of the claims. Furthermore, the above embodiments, modifications, and other embodiments may be appropriately combined or substituted as long as the functions of the subject of the present disclosure are not impaired.

[0113] The descriptions "first," "second," "third," etc. mentioned above are used to distinguish the words to which these descriptions are attached, and do not limit the number or order of the words. [Industrial Applicability]

[0114] INDUSTRIAL APPLICABILITY As described above, the present disclosure is useful for a humidification device. [Explanation of symbols]

[0115] C control section 1. Air conditioning equipment (humidifier) 22 Humidification rotor (adsorption member) 23 Second Fan 25 Heater (regeneration section) 26 First fan (playback section)

Claims

1. an adsorption member (22) that adsorbs moisture in the outdoor air; a regeneration section (25, 26) for desorbing moisture from the adsorption member (22) that is supplied to the target space (I); a casing (21) that houses the adsorption member (22) and the regeneration section (25, 26) and is installed outdoors, The humidifier supplies outdoor air humidified by moisture desorbed from the adsorption member (22) to an indoor space which is the target space (I), an outdoor air humidity sensor (52) for detecting the humidity of outdoor air; a control unit (C) that controls an output of the regenerator unit (25, 26) based on the absolute humidity of the outdoor air and a required humidification amount, The control unit (C) sets the output of the regenerating unit (25, 26) to a first value when the absolute humidity of the outdoor air is a first humidity, and sets the output of the regenerating unit (25, 26) to a second value smaller than the first value when the absolute humidity of the outdoor air is a second humidity that is lower than the first humidity and at which the required amount of humidification cannot be satisfied by the amount of moisture adsorbed by the adsorption member (22) alone. humidifier.

2. The regeneration unit includes a heater (25). The humidification device according to claim 1.

3. The regeneration section includes a first fan (26) that transports air containing moisture desorbed from the adsorption member (22) to the target space (I). A humidifier according to claim 1 or 2.

4. a second fan (23) that transports outdoor air containing moisture to be adsorbed by the adsorption member (22); The control unit (C) increases the air volume of the second fan (23) when the absolute humidity of the outdoor air is the second humidity. The humidifier according to any one of claims 1 to 3.

5. When the absolute humidity of the outdoor air is the second humidity, the control section (C) increases the air volume of the second fan (23), and thereafter sets the output of the regeneration section (25, 26) to the second value. The humidifier according to claim 4.

6. When there is a request to increase the amount of humidification of the target space (I) under a condition where the absolute humidity of the outdoor air is the first humidity, the control section (C) sets the output of the regenerator (25, 26) to a first value that is greater than the output when there is no request. The humidifier according to any one of claims 1 to 5.

7. a notification unit (41) that notifies information regarding a decrease in the humidifying capacity when there is a request to increase the amount of humidification in the target space (I) and the absolute humidity of the outdoor air is the second humidity. The humidifier according to any one of claims 1 to 6.

8. The control section (C) limits the output of the regeneration section (25, 26) so that the absolute humidity of the air in the target space (I) becomes equal to or lower than a predetermined value. A humidifier according to any one of claims 1 to 7.

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