JP2010255952A - Humidity controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress fluctuation of a flow rate of air supplied to an indoor side to secure comfortability of persons in a room, in a humidity controller using an adsorbent having the volume changed in accordance with moisture absorption/release. <P>SOLUTION: The humidity controller (10) includes two adsorption heat exchangers (51, 52). Each of the adsorption heat exchangers (51, 52) supports the adsorbent having the volume changed in accordance with moisture absorption/release. Each of the adsorption heat exchangers (51, 52) is connected to a refrigerant circuit. The adsorption heat exchangers (51, 52) operated as an evaporator absorb moisture and the adsorption heat exchangers (51, 52) operated as condensers release moisture. Since in the adsorption heat exchangers (51, 52) absorbing moisture, the adsorbent is swollen, its ventilation resistance is gradually increased. Therefore, during dehumidification operation, a fan control part of a controller gradually increases the rotational frequency of an air supply fan (26) for sucking air from the adsorption heat exchangers (51, 52) absorbing moisture, to suppress change in the flow rate of air supplied to the indoor side. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a humidity control apparatus that adjusts the humidity of captured air and supplies the air to a room.

  Conventionally, a humidity control apparatus that adjusts the humidity of air using an adsorbent is known. For example, Patent Document 1 discloses a humidity control apparatus using an adsorption heat exchanger having an adsorbent supported on a surface as a humidity control element.

  In the humidity control apparatus disclosed in Patent Document 1, two adsorption heat exchangers are connected to the refrigerant circuit. In this refrigerant circuit, the first adsorption heat exchanger serves as a condenser and the second adsorption heat exchanger serves as an evaporator, and the second adsorption heat exchanger serves as a condenser and performs the first adsorption. The operation in which the heat exchanger becomes an evaporator is alternately performed. In the adsorption heat exchanger operating as an evaporator, moisture in the air is adsorbed by the adsorbent. In an adsorption heat exchanger that operates as a condenser, moisture is desorbed from the adsorbent and applied to the air.

  In the humidity control apparatus disclosed in Patent Document 1, during the dehumidifying operation, the air dehumidified when passing through the adsorption heat exchanger operating as an evaporator is supplied into the room by an air supply fan, and the condenser The air that has been humidified when passing through the adsorption heat exchanger that operates as follows is discharged to the outside by the exhaust fan. Further, during the humidification operation, air humidified when passing through the adsorption heat exchanger operating as a condenser is supplied into the room by an air supply fan and passes through the adsorption heat exchanger operating as an evaporator. The air dehumidified at that time is discharged to the outside by the exhaust fan.

  In the humidity control apparatus, as the adsorbent, an inorganic material such as silica gel or zeolite, an organic material having a hygroscopic property, or the like is used. For example, Patent Document 2 discloses an adsorbent made of an organic polymer material that adsorbs and absorbs water vapor.

  In the adsorbent disclosed in Patent Document 2, a plurality of polymer main chains having hydrophilic polar groups in the molecule are cross-linked to each other, and the plurality of polymer main chains cross-linked to each other form a three-dimensional structure. Forming. In this adsorbent, both a phenomenon in which water vapor is adsorbed by a hydrophilic polar group and a phenomenon in which water vapor is absorbed by a three-dimensional structure composed of a polymer main chain occur. As a result, a large amount of water vapor is trapped in this adsorbent as compared with zeolite that only adsorbs water vapor on the surface.

  The adsorbent disclosed in Patent Document 2 swells by absorbing moisture and contracts by releasing moisture. That is, in this adsorbent, when water vapor is absorbed by the three-dimensional structure composed of the polymer main chain, the three-dimensional structure expands, and as a result, the volume of the adsorbent increases. Further, when water vapor is released from the three-dimensional structure composed of the polymer main chain, the shape of the three-dimensional structure is restored, and as a result, the volume of the adsorbent decreases.

JP 2008-145092 A International Publication No. 2006/076672 Pamphlet

  As described above, since the adsorbent disclosed in Patent Document 2 performs both adsorption and absorption of water vapor, a large amount of water vapor can be captured as compared to zeolite or the like that only adsorbs water vapor. Therefore, if this adsorbent is used, it is possible to improve the capacity of the humidity control apparatus (that is, the amount of dehumidification from the air and the amount of humidification to the air).

  However, the adsorbent disclosed in Patent Document 2 has a characteristic that the volume changes when moisture is absorbed or released. In the humidity control element such as the adsorption heat exchanger described above, when the volume of the adsorbent carried on the surface thereof changes, the cross-sectional area of the passage through which air passes in the humidity control element changes. Therefore, when the adsorbent having such volume changing characteristics is applied to the humidity control element, the ventilation resistance of the humidity control element changes during the operation of the humidity control apparatus. For this reason, if no measures are taken, the flow rate of the air supplied to the room through the humidity control element during the operation of the humidity control apparatus may fluctuate, which may impair the comfort of the occupants. .

  The present invention has been made in view of such points, and an object of the present invention is to suppress fluctuations in the flow rate of air supplied to a room in a humidity control apparatus that uses an adsorbent that changes in volume as moisture is absorbed and released. It is to ensure the comfort of the occupants.

  The first invention is a humidity control element (51, 52) that transfers moisture to and from the passing air, an air supply fan (26) that blows the sucked air into the room, and the sucked air outside the room. Exhaust fan (25) that blows out toward the air, and the humidity control element (51,52) alternately absorbs and releases moisture and passes through the humidity control element (51,52) during moisture release The present invention is directed to a humidity control apparatus that supplies one of the air and the air that has passed through the humidity control element (52, 51) that is absorbing moisture to the room and discharges the other to the outside. The humidity control element (51, 52) is provided with an adsorbent that swells by absorbing moisture and contracts by releasing moisture, while being in contact with air. In order to suppress fluctuations in the flow rate, the rotation speed of the air supply fan (26) is set according to the amount of moisture held by the humidity control element (51, 52) through which air supplied to the room passes. A controller (94) for adjusting is provided.

  In the humidity control apparatus (10) of the first aspect of the invention, air flows indoors by operating the air supply fan (26), and air flows outdoor by operating the exhaust fan (25). And in this humidity control apparatus (10), one of the air which passed the said humidity-control element (51,52) in moisture release, and the air which passed the said humidity-control element (51,52) in moisture absorption is It is supplied into the room and the other is discharged out of the room.

  In the first invention, the humidity control element (51, 52) is provided with an adsorbent that swells by absorbing moisture and contracts by releasing moisture. During moisture absorption of the humidity control element (52, 51), water vapor in the air passing through the humidity control element (51, 52) is trapped by the adsorbent, and the volume of the adsorbent gradually increases. The ventilation resistance of the humidity control elements (52, 51) gradually increases. On the other hand, during the moisture release of the humidity control element (51, 52), water vapor is released from the adsorbent to the air passing through the humidity control element (51, 52), and the volume of the adsorbent gradually decreases. Therefore, the ventilation resistance of the humidity control elements (51, 52) gradually decreases.

  Thus, in the humidity control apparatus (10) of the first invention, the ventilation resistance of the humidity control elements (51, 52) varies depending on the amount of moisture held by the humidity control elements (51, 52). To do. For this reason, if the rotational speed of the air supply fan (26) remains constant, the flow rate of the air supplied to the room through the humidity control element (51, 52) will change. Therefore, the humidity control device (10) of the present invention is provided with a controller (94). This controller (94) rotates the air supply fan (26) according to the amount of moisture held by the humidity control element (51, 52) in order to suppress fluctuations in the flow rate of air supplied to the room. Adjust the speed.

  According to a second aspect of the present invention, in the first aspect of the present invention, the air that has passed through the humidity control element (52, 51) that is absorbing moisture is supplied to the room to release the humidity (51, 52). While the dehumidifying operation for discharging the air that has passed through the outside to at least the outside is performed, the controller (94) is configured to remove the air supply while the humidity control element (52, 51) is absorbing moisture during the dehumidifying operation. The rotational speed of the fan (26) is gradually increased.

  In the second invention, the humidity control device (10) performs the dehumidifying operation. In the humidity control apparatus (10) during the dehumidifying operation, the air flowing toward the room passes through the humidity control elements (52, 51) that are absorbing moisture. In the humidity control element (52, 51) during moisture absorption, the ventilation resistance of the humidity control element (52, 51) gradually increases as the amount of water vapor captured by the adsorbent increases. Therefore, during the dehumidifying operation, the controller (94) gradually increases the rotational speed of the air supply fan (26) while the humidity control element (52, 51) absorbs moisture, and the air supplied to the room. Suppresses the decrease in flow rate.

  In a third aspect based on the second aspect, the controller (94) is configured to control the humidity control element (51, 52) in order to suppress fluctuations in the flow rate of air discharged to the outside during the dehumidifying operation. ) Gradually reduces the rotational speed of the exhaust fan (25) while it is dehumidifying.

  In the humidity control apparatus (10) of the third aspect of the invention, during the dehumidifying operation, the air flowing toward the outside passes through the humidity control elements (51, 52) that are being dehumidified. In the humidity control element (51, 52) during moisture release, the ventilation resistance of the humidity control element (51, 52) gradually decreases as the amount of water vapor captured by the adsorbent decreases. Therefore, during the dehumidifying operation, the controller (94) gradually reduces the rotational speed of the exhaust fan (25) while the humidity control element (51, 52) is dehumidifying, and the air discharged to the outside. Suppress the increase in flow rate.

  A fourth invention is the above-mentioned second invention, comprising a plurality of the humidity control elements, wherein the first humidity control element (51) releases moisture and the second humidity control element (52) While the first operation of absorbing moisture and the second operation of releasing moisture by the second humidity control element (52) and absorbing moisture by the first humidity control element (51) are alternately repeated, the dehumidification During operation, the controller (94) gradually increases the rotational speed of the air supply fan (26) during the continuation of the first operation and the second operation, and the first operation and the second operation are switched to each other. In this case, the rotational speed of the air supply fan (26) is reduced.

  In the fourth invention, the humidity control apparatus (10) repeats the first operation and the second operation alternately. In the humidity control apparatus (10) during the dehumidifying operation, the air flowing toward the room passes through the second moisture conditioning element (52) that absorbs moisture during the first operation, and during the second operation. It passes through the first humidity control element (51) that absorbs moisture. During the continuation of the first operation and the second operation, the ventilation resistance of the moisture-adjusting elements (52, 51) that absorb moisture gradually increases. Therefore, the controller (94) gradually increases the rotational speed of the air supply fan (26) during the continuation of the first operation and the second operation, and passes through the humidity control element (52, 51) that is absorbing moisture. Reduces the decrease in the flow rate of air into the room.

  On the other hand, in the humidity control apparatus (10) of the fourth invention, for example, when the operation is switched from the first operation to the second operation, the flow path of the air flowing into the room is the second humidity control device. The path passing through the element (52) is switched to the path passing through the first humidity control element (51). And when 2nd operation | movement is started, the 1st humidity control element (51) which moisture-released in the 1st operation | movement just before and will be in the state with the low amount of moisture will begin to absorb moisture. That is, when the first operation and the second operation are switched to each other, the humidity control element (52, 51) in which the humidity control element through which the air flowing toward the room passes absorbs moisture and has a high ventilation resistance state. ) To the humidity control element (51, 52) that has been dehumidified and has a low ventilation resistance. Therefore, when the first operation and the second operation are switched to each other during the dehumidifying operation, the controller (94) reduces the rotational speed of the air supply fan (26) and releases the moisture during the operation before switching. The rotational speed of the air supply fan (26) is restored to a value commensurate with the ventilation resistance of the humidity control elements (51, 52).

  According to a fifth aspect of the present invention, in the first aspect of the present invention, the air that has passed through the humidity control element (51, 52) that is being dehumidified is supplied to the room to absorb moisture. While performing at least a humidifying operation for exhausting the air that has passed through the room, the controller (94) during the humidifying operation, while the humidity control element (51, 52) is releasing moisture, The rotational speed of the air fan (26) is gradually reduced.

  In 5th invention, a humidity control apparatus (10) performs a humidification driving | operation. In the humidity control apparatus (10) during the humidifying operation, the air flowing toward the room passes through the humidity control elements (51, 52) during the moisture release. In the humidity control element (51, 52) during moisture release, the ventilation resistance of the humidity control element (51, 52) gradually decreases as the amount of water vapor captured by the adsorbent decreases. Therefore, during the humidifying operation, the controller (94) gradually decreases the rotational speed of the air supply fan (26) while the humidity control element (51, 52) is dehumidifying, and is supplied to the room. Reduce the increase in air flow.

  In a sixth aspect based on the fifth aspect, the controller (94) is configured to control the humidity control element (52, 51) in order to suppress fluctuations in the flow rate of the air discharged to the outside during the humidifying operation. ) Gradually increases the rotational speed of the exhaust fan (25) while absorbing moisture.

  In the sixth aspect of the invention, during the humidifying operation, the air flowing toward the outside passes through the humidity control elements (51, 52) that are absorbing moisture. In the humidity control element (52, 51) during moisture absorption, the ventilation resistance of the humidity control element (52, 51) gradually increases as the amount of water vapor captured by the adsorbent increases. Therefore, during the humidification operation, the controller (94) gradually increases the rotational speed of the exhaust fan (25) while the humidity control element (52, 51) absorbs moisture, Reduce the decrease in flow rate.

  A seventh invention is the above-mentioned fifth invention, comprising a plurality of the humidity control elements, wherein the first humidity control element (51) releases moisture and the second humidity control element (52) While the first operation of absorbing moisture and the second operation of releasing moisture by the second humidity control element (52) and absorbing moisture by the first humidity control element (51) are alternately repeated, During operation, the controller (94) gradually decreases the rotational speed of the air supply fan (26) during the continuation of the first operation and the second operation, and the first operation and the second operation are switched to each other. In this case, the rotational speed of the air supply fan (26) is increased.

  In the seventh invention, the humidity control apparatus (10) repeats the first operation and the second operation alternately. In the humidity control apparatus (10) during the humidification operation, the air flowing toward the room passes through the first humidity control element (51) that releases moisture during the first operation, and during the second operation. Passes through the second humidity control element (52) that is releasing moisture. During the continuation of the first operation and the second operation, the ventilation resistance of the moisture-adjusting elements (51, 52) that are releasing moisture gradually decreases. Therefore, the controller (94) gradually decreases the rotational speed of the air supply fan (26) during the continuation of the first operation and the second operation, and passes through the humidity control elements (51, 52) during the moisture release. To suppress the increase in the air flow rate toward the room.

  On the other hand, in the humidity control apparatus (10) of the seventh invention, for example, when the operation is switched from the first operation to the second operation, the flow path of the air flowing toward the room is the first humidity control device. The path passing through the element (51) is switched to the path passing through the second humidity control element (52). When the second operation is started, the second humidity control element (52) that has absorbed moisture during the immediately preceding first operation and has a high amount of moisture begins to release moisture. That is, when the first operation and the second operation are switched to each other, the humidity control element (51, Switching from 52) to the humidity control element (52, 51) that has absorbed moisture and is in a state of high ventilation resistance. Therefore, when the first operation and the second operation are switched to each other during the humidifying operation, the controller (94) increases the rotational speed of the air supply fan (26) and adjusts the amount of moisture absorbed during the operation before switching. The rotational speed of the air supply fan (26) is restored to a value commensurate with the ventilation resistance of the wetting elements (52, 51).

  According to an eighth invention, in any one of the first to seventh inventions, the humidity control element (51, 52) includes a plurality of fins (57) each having an adsorbent supported on a surface thereof, A heat transfer pipe (58) that is joined to the fin (57) and through which the heat medium flows is provided, while the humidity control element (51,52) is used to absorb moisture by the humidity control element (51,52). ) To the heat transfer tube (58) of the humidity control element (51,52) to supply a cooling heat medium to the heat transfer tube (58) and release the moisture to the humidity control element (51,52). A heat medium circuit (50) for supplying a heat medium for heating is provided.

  In the eighth invention, the heat medium circuit (50) is connected to the heat transfer tube (58) of the humidity control element (51, 52). When the heat medium circuit (50) supplies the cooling heat medium to the heat transfer tube (58), the adsorbent supported on the fins (57) of the humidity control element (51, 52) is cooled by the heat medium for cooling. Is done. Further, when the heat medium circuit (50) supplies a heat medium for heating to the heat transfer tube (58), the adsorbent carried on the fins (57) of the humidity control element (51, 52) becomes the heat medium for heating. Heated by.

  Here, since heat is generated when the humidity control element (51, 52) absorbs moisture, the temperature of the air passing through the humidity control element (51, 52) rises if no measures are taken. The relative humidity of the air passing through the humidity control elements (51, 52) is lowered not only by the moisture control elements (51, 52) being deprived of water vapor but also by the temperature rise. Therefore, in the eighth invention, the heat medium circuit (50) supplies the heat medium for cooling to the heat transfer tube (58) of the humidity control element (51, 52). Then, the heat generated when the humidity control element (51, 52) absorbs moisture is absorbed by the cooling heat medium, and the temperature rise of the air passing through the humidity control element (51, 52) is suppressed. Moisture absorption of the adsorbent is promoted. In the present invention, when a heating heat medium is supplied to the heat transfer tubes (58) of the humidity control elements (51, 52), the adsorbent supported on the surfaces of the fins (57) is heated. Heated by the medium, moisture release from the adsorbent is promoted.

  According to a ninth aspect of the present invention, in the first aspect of the invention, the air that has passed through the humidity control element (52, 51) that is absorbing moisture is supplied into the room to release the humidity. Dehumidifying operation for discharging the air that has passed through the room to the outside, and supplying the air that has passed through the humidity control element (51,52) during moisture release to the room, and the humidity control element (52,51) during moisture absorption A plurality of operation modes including at least a humidifying operation for exhausting the air that has passed through the room to the outside, and the controller (94) includes the air supply fan (26) during the execution of each operation mode. The rotational speed change patterns are individually stored, and the rotational speed of the air supply fan (26) is controlled based on the stored change patterns corresponding to the operation mode being executed.

  In the humidity control apparatus (10) of the ninth aspect, a plurality of operation modes including at least a dehumidifying operation and a humidifying operation can be executed. The controller (94) stores the change pattern of the rotational speed of the air supply fan (26) individually for each operation mode. And a controller (94) is supplied indoors by controlling the rotational speed of the said air supply fan (26) based on what corresponds to the operation mode in execution among the stored change patterns. Reduce changes in air flow.

  In a tenth aspect of the present invention based on the first aspect of the invention, the instrument comprises a measuring instrument (97) that measures the temperature and humidity of the air flowing toward the room upstream of the humidity control element (51, 52), while the control The device (94) sets a target value of power consumption of the electric motor (89) that drives the air supply fan (26) based on the measured value of the measuring device (97), and sets the air supply fan (26). The rotational speed of the air supply fan (26) is controlled so that the power consumption of the electric motor (89) to be driven becomes a set target value.

  In the tenth invention, the measuring instrument (97) measures the temperature and humidity of the air flowing toward the room upstream of the humidity control element (51, 52). The controller (94) sets a target value of power consumption of the electric motor (89) that drives the air supply fan (26) based on the temperature and humidity of the air measured by the measuring instrument (97). Then, the controller (94) adjusts the rotational speed of the air supply fan (26) so that the power consumption of the electric motor (89) that drives the air supply fan (26) becomes a set target value. Suppresses changes in the flow rate of air supplied to

  The eleventh aspect of the present invention includes the flowmeter (98) for measuring the flow velocity of the air flowing toward the room in the first aspect of the invention, while the controller (94) is a measured value of the flowmeter (98). The rotational speed of the air supply fan (26) is adjusted so that is maintained at a predetermined target value.

  In the eleventh aspect, the anemometer (98) measures the flow velocity of the air flowing toward the room. Then, the controller (94) adjusts the rotational speed of the air supply fan (26) so that the measured value of the anemometer (98) is maintained at a predetermined target value. By the operation of the controller (94), the change in the flow rate of the air supplied into the room is suppressed.

  In the present invention, an adsorbent that swells by absorbing moisture and contracts by releasing moisture is provided in the humidity control element (51, 52), and the ventilation resistance of the humidity control element (51, 52) is: It varies depending on the amount of moisture held by the humidity control element (51, 52). In the present invention, the controller (94) adjusts the rotational speed of the air supply fan (26) according to the amount of moisture held by the humidity control element (51, 52). Therefore, according to the present invention, it is possible to suppress fluctuations in the flow rate of the air that passes through the humidity control elements (51, 52) and is supplied to the room, and to ensure the comfort of the occupants. .

  In the second aspect of the invention, during the dehumidifying operation in which the air toward the room passes through the moisture-adjusting element (51, 52), while the humidity-adjusting element (52, 51) is absorbing moisture, the controller (94) gradually increases the rotational speed of the air supply fan (26). Therefore, according to this invention, the fall of the flow volume of the air supplied indoors during a dehumidification driving | operation can be suppressed.

  In the third aspect of the present invention, during the dehumidifying operation in which the air that goes to the outside passes through the dehumidifying humidity control element (51, 52), the humidity control element (51, 52) is dehumidifying. The controller (94) gradually decreases the rotational speed of the exhaust fan (25). Therefore, according to the present invention, it is possible to suppress an increase in the flow rate of the air discharged to the outside during the dehumidifying operation.

  In the humidity control apparatus (10) according to the fourth aspect of the present invention, when the first operation and the second operation are switched to each other, the humidity control element through which air flowing toward the room passes is the first humidity control device. The element (51) and the second humidity control element (52) are switched from one to the other. When the first operation and the second operation are switched to each other in the humidity control apparatus (10) during the dehumidifying operation, the humidity adjusting element through which the air flowing toward the room passes absorbs moisture and reduces the ventilation resistance. One humidity control element (52, 51) in a large state is switched to the other humidity control element (51, 52) in a state where the moisture resistance is released and the ventilation resistance is low.

  Therefore, the controller (94) of the fourth invention gradually increases the rotational speed of the air supply fan (26) during the continuation of the first operation and the second operation, and the first operation and the second operation are mutually performed. When switching, the rotational speed of the air supply fan (26) is reduced. Therefore, according to the present invention, even in the humidity control apparatus (10) that alternately and repeatedly performs the first operation and the second operation, the flow rate of the air supplied to the room after passing through the humidity control elements (51, 52) is reduced. Variation can be suppressed.

  In the fifth aspect of the present invention, during the humidifying operation in which the air going indoors passes through the moisture-controlling element (51, 52), the humidity-control element (51, 52) is dehumidifying. The controller (94) gradually decreases the rotational speed of the air supply fan (26). Therefore, according to the present invention, it is possible to suppress an increase in the flow rate of the air supplied into the room during the humidifying operation.

  In the sixth aspect of the present invention, during the humidifying operation in which the air that is directed to the outside passes through the moisture-adjusting element (52, 51), while the humidity-regulating element (52, 51) is absorbing moisture, the controller (94) gradually increases the rotational speed of the exhaust fan (25). Therefore, according to the present invention, it is possible to suppress a decrease in the flow rate of the air discharged to the outside during the humidifying operation.

  In the seventh aspect of the invention, when the first operation and the second operation are switched to each other, the humidity adjusting element through which the air flowing toward the room passes is the first humidity adjusting element (51) and the second humidity adjusting element. The humidity control element (52) is switched from one to the other. When the first operation and the second operation are switched to each other in the humidity control apparatus (10) during the humidifying operation, the humidity adjusting element through which the air flowing toward the room passes is dehumidified to reduce the ventilation resistance. Is switched from one humidity control element (51, 52), which is in a small state, to the other humidity control element (52, 51), which has absorbed moisture and has a large ventilation resistance.

  Therefore, the controller (94) of the seventh invention gradually decreases the rotational speed of the air supply fan (26) during the continuation of the first operation and the second operation, and the first operation and the second operation are mutually performed. When switching, the rotational speed of the air supply fan (26) is increased. Therefore, according to the present invention, even in the humidity control apparatus (10) that alternately and repeatedly performs the first operation and the second operation, the flow rate of the air supplied to the room after passing through the humidity control elements (51, 52) is reduced. Variation can be suppressed.

  In the eighth aspect of the invention, the heat medium circuit (50) supplies the cooling heat medium to the heat transfer tube (58) of the humidity control element (51, 52), whereby the humidity control element (51, 52). Moisture absorption is promoted. Further, according to the present invention, the heat medium circuit (50) supplies the heating medium to the heat transfer tube (58) of the humidity control element (51, 52), whereby the humidity control element (51, 52). Moisture release is promoted. Therefore, according to the present invention, it is possible to secure a sufficient amount of water vapor that is absorbed or released by the humidity control element (51, 52) and to improve the ability of the humidity control device (10).

  In the ninth aspect, the controller (94) selects a change pattern of the rotational speed of the air supply fan (26) stored in advance, which corresponds to the operation mode being executed, and the selected change pattern. The rotational speed of the air supply fan (26) is adjusted along That is, the controller (94) of the present invention does not perform a complicated control operation and adjusts the rotational speed of the air supply fan (26) in accordance with a change pattern stored in advance. Therefore, according to the present invention, a change in the flow rate of the air supplied to the room can be suppressed by causing the controller (94) to perform a simple control operation.

  In the tenth aspect of the invention, the controller (94) controls the rotational speed of the air supply fan (26) based on the measured values of the air temperature and humidity measured by the measuring instrument (97). In the eleventh aspect of the invention, the controller (94) controls the rotational speed of the air supply fan (26) based on the actual measured value of the air flow velocity measured by the anemometer (98). Therefore, according to each of the tenth and eleventh aspects of the invention, the rotational speed of the air supply fan (26) can be appropriately adjusted according to the actual operating state of the humidity control device (10). The change in the flow rate of the generated air can be suppressed.

It is a perspective view which abbreviate | omits a part of casing and an electrical component box from the humidity control apparatus seen from the front side. It is a top view which abbreviate | omits the top plate of a casing and shows a humidity control apparatus. It is a piping system diagram showing the composition of a refrigerant circuit, (A) shows operation in the 1st operation, and (B) shows operation in the 2nd operation. It is a schematic perspective view of an adsorption heat exchanger. It is a block diagram which shows the structure of a controller. It is a schematic plan view, a right side view, and a left side view of the humidity control apparatus showing the air flow in the first operation of the dehumidifying ventilation operation. It is a schematic plan view, a right side view, and a left side view of the humidity control apparatus showing the air flow in the second operation of the dehumidifying ventilation operation. It is a schematic plan view, a right side view, and a left side view of a humidity control apparatus showing the air flow in the first operation of the humidification ventilation operation. It is a schematic plan view, a right side view, and a left side view of the humidity control apparatus showing the air flow in the second operation of the humidification ventilation operation. It is a schematic plan view, a right side view, and a left side view of a humidity control apparatus showing the flow of air in simple ventilation operation. Each of (A) to (C) is a graph showing the change over time in the ventilation resistance of the adsorption heat exchanger, and (D) is the rotation speed of the supply fan during the dehumidification ventilation operation and the exhaust fan during the humidification ventilation operation. It is a graph which shows a time-dependent change. Each of (A) to (C) is a graph showing the change over time in the ventilation resistance of the adsorption heat exchanger, and (D) is the rotation speed of the exhaust fan during dehumidification ventilation operation and the supply fan during humidification ventilation operation. It is a graph which shows a time-dependent change. It is a top view of a humidity control apparatus which shows schematic structure of the humidity control apparatus of the 3rd modification in the modification 1 of embodiment. It is a schematic block diagram of the humidity control apparatus in the modification 4 of embodiment, Comprising: (A) shows the operation | movement in 1st operation | movement, (B) shows the operation | movement in 2nd operation | movement. It is a schematic perspective view of the humidity control unit in the modification 5 of an embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The humidity control device (10) of the present embodiment performs indoor ventilation as well as indoor humidity adjustment. At the same time, the taken outdoor air (OA) is humidity-adjusted and supplied to the room. ) To the outside.

<Structure of humidity control device>
The structure of the humidity control device (10) will be described. Note that “upper”, “lower”, “left”, “right”, “front”, “rear”, “front”, and “rear” used in the description here are the humidity control device (10) from the front side unless otherwise stated. It means the direction when viewed.

  As shown in FIGS. 1 and 2, the humidity control apparatus (10) includes a casing (11). A refrigerant circuit (50) is accommodated in the casing (11). The refrigerant circuit (50) includes a first adsorption heat exchanger (51), a second adsorption heat exchanger (52), a compressor (53), a four-way switching valve (54), and an electric expansion valve (55). It is connected. Details of the refrigerant circuit (50) will be described later.

  The casing (11) is formed in a rectangular parallelepiped shape that is slightly flat and relatively low in height. In the casing (11), the part forming the left front side (ie, the front face) in FIG. 1 is the front panel portion (12), and the part forming the right back side face (ie, the back face) in FIG. Department (13). Moreover, in this casing (11), the part which forms the side surface of the right front side in the same figure becomes the 1st side surface panel part (14), and the part which forms the back left side surface in the figure is the 2nd side surface panel part (15 ).

  The casing (11) is formed with an outside air suction port (24), an inside air suction port (23), an air supply port (22), and an exhaust port (21). The outside air inlet (24) and the inside air inlet (23) are open to the back panel (13). In the back panel (13), an outside air inlet (24) is formed in the lower part, and an inside air inlet (23) is formed in the upper part. The air supply port (22) is disposed near the end of the first side panel (14) on the front panel (12) side. The exhaust port (21) is disposed near the end of the second side panel (15) on the front panel (12) side.

  The internal space of the casing (11) includes an upstream divider plate (71), a downstream divider plate (72), a central divider plate (73), a first divider plate (74), and a second divider plate ( 75). These partition plates (71 to 75) are all erected on the bottom plate of the casing (11), and divide the internal space of the casing (11) from the bottom plate of the casing (11) to the top plate. .

  The upstream partition plate (71) and the downstream partition plate (72) are disposed in parallel with the front panel portion (12) and the back panel portion (13). In the internal space of the casing (11), the upstream partition plate (71) is disposed closer to the rear panel portion (13), and the downstream partition plate (72) is disposed closer to the front panel portion (12).

  The first partition (74) is disposed so as to close the space between the upstream partition (71) and the downstream partition (72) from the right side. The second partition plate (75) is disposed so as to close the space between the upstream partition plate (71) and the downstream partition plate (72) from the left side. The central partition plate (73) is disposed between the upstream partition plate (71) and the downstream partition plate (72) in a posture orthogonal to the upstream partition plate (71) and the downstream partition plate (72). Yes. The central partition plate (73) partitions the space between the upstream partition plate (71) and the downstream partition plate (72) on the left and right.

  As shown also in FIG. 6, in the casing (11), the space between the upstream divider plate (71) and the back panel (13) is partitioned into two upper and lower spaces. In this space partitioned vertically, the upper space constitutes the inside air passage (32), and the lower space constitutes the outside air passage (34).

  The room air side passage (32) communicates with the room through a duct connected to the room air inlet (23). The room air passage (32) is provided with a room air filter (27) for removing dust and the like from the air. The room air side passage (32) is divided forward and backward by the room air side filter (27). An inside air temperature / humidity sensor (96) is accommodated in a portion on the front side (downstream side) of the inside air side filter (27) in the inside air side passage (32). The internal air temperature / humidity sensor (96) is a measuring instrument for measuring the temperature and relative humidity of the air, and is attached to the top plate of the casing (11).

  The outside air passage (34) communicates with the outdoor space via a duct connected to the outside air inlet (24). The outside air passage (34) is provided with an outside air filter (28) for removing dust and the like from the air. The outside air passage (34) is divided forward and backward by the outside air filter (28). An outside air temperature / humidity sensor (97) is housed in a portion of the outside air passage (34) on the front side (downstream side) of the outside air filter (28). The outside air temperature / humidity sensor (97) is a measuring instrument for measuring the temperature and relative humidity of the air, and is attached to the bottom plate of the casing (11).

  As described above, the space between the upstream partition plate (71) and the downstream partition plate (72) in the casing (11) is divided into left and right by the central partition plate (73). In this space partitioned right and left, the space on the right side of the central partition plate (73) constitutes the first heat exchanger chamber (37), and the space on the left side of the central partition plate (73) is the second heat exchanger chamber. (38).

  A first adsorption heat exchanger (51) is accommodated in the first heat exchanger chamber (37). Moreover, the electric expansion valve (55) of the refrigerant circuit (50) is accommodated in the first heat exchanger chamber (37). The second adsorption heat exchanger (52) is accommodated in the second heat exchanger chamber (38). Each adsorption heat exchanger (51, 52) is formed in the shape of a rectangular thick plate or a flat rectangular parallelepiped as a whole. The adsorption heat exchanger (51, 52) is erected in the heat exchanger chamber (37, 38), and divides the heat exchanger chamber (37, 38) into the front and rear. The details of the adsorption heat exchanger (51, 52) will be described later.

  As shown in FIG. 6, in the internal space of the casing (11), a portion along the front surface of the downstream partition plate (72) is partitioned vertically. In this space partitioned vertically, the upper space constitutes the air supply side passage (31), and the lower space constitutes the exhaust side passage (33).

  The upstream partition plate (71) is provided with four open / close dampers (41 to 44). Each damper (41-44) is formed in the shape of a substantially horizontally long rectangle. Specifically, in a part (upper part) facing the room air passage (32) in the upstream partition (71), the first room air damper (41) is attached to the right side of the central partition (73). The second inside air damper (42) is attached to the left side of the central partition plate (73). Moreover, in the part (lower part) which faces an external air side channel | path (34) among upstream side partition plates (71), the 1st external air side damper (43) is attached to the right side rather than a center partition plate (73), A second outside air damper (44) is attached to the left side of the central partition plate (73).

  The downstream partition plate (72) is provided with four open / close dampers (45 to 48). Each damper (45-48) is formed in the shape of a substantially horizontally long rectangle. Specifically, in the part (upper part) facing the supply side passageway (31) in the downstream partition plate (72), the first supply side damper (45) is located on the right side of the central partition plate (73). The second air supply side damper (46) is attached to the left side of the central partition plate (73). Moreover, in the part (lower part) which faces an exhaust side channel | path (33) among downstream partition plates (72), the 1st exhaust side damper (47) is attached to the right side rather than a center partition plate (73), A second exhaust side damper (48) is attached to the left side of the central partition plate (73).

  In the casing (11), the space between the air supply side passage (31) and the exhaust side passage (33) and the front panel portion (12) is partitioned right and left by the partition plate (77). In this left and right space, the space on the right side of the partition plate (77) constitutes the supply fan chamber (36), and the space on the left side of the partition plate (77) forms the exhaust fan chamber (35). Yes. The partition plate (77) is further erected closer to the second side panel (15) than the central partition plate (73). The supply fan chamber (36) and the exhaust fan chamber (35) are both spaces extending from the bottom plate of the casing (11) to the top plate.

  The air supply fan (26) is accommodated in the air supply fan chamber (36). The exhaust fan chamber (35) accommodates an exhaust fan (25). The supply fan (26) and the exhaust fan (25) are both centrifugal multiblade fans (so-called sirocco fans). These fans (25, 26) include a fan rotor, a fan casing (86), and a fan motor (89) that is an electric motor. Although not shown, the fan rotor is housed in the fan casing (86) and driven by the fan motor (89).

  In the air supply fan chamber (36), the air supply fan (26) is installed such that the suction port (87) of the fan casing (86) faces the downstream partition plate (72). The air outlet (88) of the fan casing (86) of the air supply fan (26) is attached to the first side panel (14) so as to communicate with the air supply port (22).

  In the exhaust fan chamber (35), the exhaust fan (25) is installed such that the suction port (87) of the fan casing (86) faces the downstream partition plate (72). Further, the air outlet (88) of the fan casing (86) of the exhaust fan (25) is attached to the second side panel (15) in a state of communicating with the exhaust port (21).

  The supply fan chamber (36) accommodates the compressor (53) and the four-way switching valve (54) of the refrigerant circuit (50). The compressor (53) and the four-way selector valve (54) are disposed between the air supply fan (26) and the partition plate (77) in the air supply fan chamber (36).

  In the casing (11), the space between the first partition (74) and the first side panel (14) forms a first bypass passage (81). In the casing (11), the space between the second partition plate (75) and the second side panel (15) forms a second bypass passage (82).

  The start end (end on the back panel portion (13) side) of the first bypass passage (81) communicates only with the outside air passage (34) and is blocked from the inside air passage (32). The terminal end of the first bypass passage (81) (the end on the front panel portion (12) side) is divided by a partition plate (78) into the air supply side passage (31), the exhaust side passage (33), and the air supply fan chamber. It is divided from (36). A first bypass damper (83) is provided in a portion of the partition plate (78) facing the supply fan chamber (36). The first bypass damper (83) is an open / close damper formed in a substantially vertically long rectangular shape.

  The starting end of the second bypass passage (82) (the end on the back panel (13) side) is connected only to the inside air passage (32) through the communication port (76) formed in the second partition plate (75). It communicates and is blocked from the outside air passage (34). The end of the second bypass passage (82) (the end on the front panel portion (12) side) is divided by a partition plate (79) into the supply side passage (31), the exhaust side passage (33), and the exhaust fan chamber ( 35). A second bypass damper (84) is provided in a portion of the partition plate (79) facing the exhaust fan chamber (35). The second bypass damper (84) is an open / close damper formed in a substantially vertically long rectangular shape.

  6, the first bypass passage (81), the second bypass passage (82), the first bypass damper (83), and the second bypass damper (84) are shown. Is omitted.

  In the front panel portion (12) of the casing (11), an electrical component box (90) is attached to a portion on the right side (see FIG. 2). The electrical component box (90) is a rectangular parallelepiped box, and a control board (91) and a power supply board (92) are accommodated therein. The control board (91) and the power supply board (92) are attached to the inner side surface of the side plate of the electrical component box (90) adjacent to the front panel portion (12) (that is, the back plate).

<Configuration of refrigerant circuit>
The refrigerant circuit (50) will be described with reference to FIG.

  The refrigerant circuit (50) includes a first adsorption heat exchanger (51), a second adsorption heat exchanger (52), a compressor (53), a four-way switching valve (54), and an electric expansion valve (55). Closed circuit. The refrigerant circuit (50) performs a vapor compression refrigeration cycle by circulating the filled refrigerant.

  In the refrigerant circuit (50), the compressor (53) has its discharge side connected to the first port of the four-way switching valve (54) and its suction side connected to the second port of the four-way switching valve (54). Yes. One end of the first adsorption heat exchanger (51) is connected to the third port of the four-way switching valve (54). The other end of the first adsorption heat exchanger (51) is connected to one end of the second adsorption heat exchanger (52) via the electric expansion valve (55). The other end of the second adsorption heat exchanger (52) is connected to the fourth port of the four-way switching valve (54).

  The four-way switching valve (54) has a first state (the state shown in FIG. 3A) in which the first port and the third port communicate with each other and the second port and the fourth port communicate with each other, It is possible to switch to the second state (the state shown in FIG. 3B) in which one port communicates with the fourth port and the second port communicates with the third port.

  In the humidity control apparatus (10) of the present embodiment, the refrigerant circuit (50) constitutes a heat medium circuit. In this refrigerant circuit (50), a high-pressure gas refrigerant is supplied as a heating heat medium to one of the two adsorption heat exchangers (51, 52) that operates as a condenser, and a low pressure to the one that operates as an evaporator. The gas-liquid two-phase refrigerant is supplied as a cooling heat medium.

<Adsorption heat exchanger configuration>
Each of the first adsorption heat exchanger (51) and the second adsorption heat exchanger (52) has an adsorbent supported on the surface of the fin-and-tube heat exchanger, and has a humidity control element. It is composed.

  As shown in FIG. 4, these adsorption heat exchangers (51, 52) include a copper heat transfer tube (58) and aluminum fins (57). The plurality of fins (57) provided in the adsorption heat exchanger (51, 52) are each formed in a rectangular plate shape and are arranged at regular intervals. Further, the heat transfer tube (58) has a shape meandering in the arrangement direction of the fins (57). That is, in this heat transfer tube (58), straight tube portions that pass through the fins (57) and U-shaped tube portions (59) that connect adjacent straight tube portions are alternately formed. In the adsorption heat exchanger (51, 52), an adsorbent is carried on the surface of each fin (57), and the air passing between the fins (57) is carried by the fin (57). Contact with.

  In the adsorption heat exchanger (51, 52) of the present embodiment, a hygroscopic organic polymer material is used as an adsorbent. In an organic polymer material used as an adsorbent, a plurality of polymer main chains having hydrophilic polar groups in the molecule are cross-linked with each other, and the plurality of polymer main chains cross-linked with each other form a three-dimensional structure. Forming.

  The adsorbent of the present embodiment swells by capturing (that is, absorbing moisture) water vapor. The mechanism by which the adsorbent swells by absorbing moisture is presumed as follows. In other words, when this adsorbent absorbs moisture, water vapor is adsorbed around the hydrophilic polar group, and the electric force generated by the reaction between the hydrophilic polar group and water vapor acts on the polymer main chain. As a result, the polymer main chain is deformed. Then, water vapor is taken into the gaps between the deformed polymer main chains by capillary force, and when the water vapor enters, a three-dimensional structure composed of a plurality of polymer main chains swells, resulting in an increase in the volume of the adsorbent. .

  Thus, in the adsorbent of this embodiment, both the phenomenon that water vapor is adsorbed by the adsorbent and the phenomenon that water vapor is absorbed by the adsorbent occur. That is, water vapor is sorbed on the adsorbent. Further, the water vapor captured by the adsorbent enters not only the surface of the three-dimensional structure composed of a plurality of polymer main chains cross-linked with each other but also into the interior thereof. As a result, a large amount of water vapor is trapped in this adsorbent as compared with zeolite that only adsorbs water vapor on the surface.

  Further, the adsorbent shrinks by releasing water vapor (that is, moisture release). That is, when this adsorbent dehumidifies, the amount of water trapped in the gap between the polymer main chains decreases, and the shape of the three-dimensional structure composed of a plurality of polymer main chains is reduced. The volume of the adsorbent decreases as it returns.

  Note that the material used as the adsorbent in the present embodiment is not limited to the above-described material as long as it swells by absorbing moisture and contracts by releasing moisture, and is, for example, an ion exchange resin having hygroscopicity. May be.

<Configuration of controller>
The humidity control apparatus (10) includes a controller (93). The controller (93) is provided on the control board (91), opens and closes the dampers (41 to 48, 83, 84), operates the compressor (53), and opens the electric expansion valve (55). Adjust the degree, change the four-way selector valve (54), etc.

  As shown in FIG. 5, the controller (93) includes a fan controller (94) that is a controller. The fan controller (94) performs a control operation for adjusting the rotational speeds of the air supply fan (26) and the exhaust fan (25). Details of the control operation performed by the fan control unit (94) will be described later.

-Driving action-
The humidity control apparatus (10) of the present embodiment can execute three operation modes (dehumidification ventilation operation, humidification ventilation operation, and simple ventilation operation). That is, this humidity control apparatus (10) selectively performs dehumidification ventilation operation, humidification ventilation operation, and simple ventilation operation.

  The humidity control device (10) during dehumidification ventilation operation or humidification ventilation operation adjusts the humidity of the taken outdoor air (OA) and supplies it to the room as supply air (SA). To the outside as exhaust air (EA). On the other hand, the humidity control device (10) during the simple ventilation operation supplies the taken outdoor air (OA) to the room as supplied air (SA) as it is, and at the same time discharges the taken indoor air (RA) as it is. To be discharged outside the room.

<Dehumidification ventilation operation>
In the humidity control apparatus (10) during the dehumidifying ventilation operation, a first operation and a second operation described later are alternately repeated at a predetermined time interval (for example, every 3 minutes). During the dehumidifying ventilation operation, the first bypass damper (83) and the second bypass damper (84) are always closed.

  When the air supply fan (26) is operated in the humidity control apparatus (10) during the dehumidification / ventilation operation, outdoor air is taken into the casing (11) as the first air from the outside air inlet (24). Further, when the exhaust fan (25) is operated, room air is taken as second air from the inside air suction port (23) into the casing (11).

  First, the first operation of the dehumidifying ventilation operation will be described. As shown in FIG. 6, during the first operation, the first inside air damper (41), the second outside air damper (44), the second air supply damper (46), and the first exhaust damper ( 47) is opened, and the second inside air damper (42), the first outside air damper (43), the first air supply side damper (45), and the second exhaust side damper (48) are closed.

  In the refrigerant circuit (50) during the first operation, as shown in FIG. 3 (A), the four-way switching valve (54) is set to the first state. In the refrigerant circuit (50) in this state, the refrigerant circulates to perform a refrigeration cycle. At that time, in the refrigerant circuit (50), the refrigerant discharged from the compressor (53) passes through the first adsorption heat exchanger (51), the electric expansion valve (55), and the second adsorption heat exchanger (52) in this order. The first adsorption heat exchanger (51) serves as a condenser and the second adsorption heat exchanger (52) serves as an evaporator.

  The first air flowing into the outside air passage (34) flows into the second heat exchanger chamber (38) through the second outside air damper (44), and then passes through the second adsorption heat exchanger (52). pass. In the second adsorption heat exchanger (52), the adsorbent carried on the surface absorbs moisture from the first air, and the refrigerant absorbs heat generated at that time. The first air dehumidified while passing through the second adsorption heat exchanger (52) flows into the supply side passage (31) through the second supply side damper (46) and is supplied to the supply fan (26 ) Is passed through the air supply port (22) and passed into the room.

  On the other hand, the 2nd air which flowed into the inside air side passage (32) flows into the 1st heat exchanger room (37) through the 1st inside air side damper (41), and after that, the 1st adsorption heat exchanger (51 ) In the first adsorption heat exchanger (51), the adsorbent heated by the refrigerant releases moisture, and water vapor released from the adsorbent is given to the second air. The second air provided with water vapor while passing through the first adsorptive heat exchanger (51) flows into the exhaust side passage (33) through the first exhaust side damper (47), and the exhaust fan (25). After passing through, it is discharged to the outside through the exhaust port (21).

  Next, the second operation of the dehumidifying ventilation operation will be described. As shown in FIG. 7, during the second operation, the second inside air damper (42), the first outside air damper (43), the first air supply side damper (45), and the second exhaust side damper ( 48) is opened, and the first inside air damper (41), second outside air damper (44), second air supply damper (46), and first exhaust damper (47) are closed.

  In the refrigerant circuit (50) during the second operation, as shown in FIG. 3 (B), the four-way selector valve (54) is set to the second state. In the refrigerant circuit (50) in this state, the refrigerant circulates to perform a refrigeration cycle. At that time, in the refrigerant circuit (50), the refrigerant discharged from the compressor (53) passes through the second adsorption heat exchanger (52), the electric expansion valve (55), and the first adsorption heat exchanger (51) in this order. The first adsorption heat exchanger (51) serves as an evaporator and the second adsorption heat exchanger (52) serves as a condenser.

  The first air that has flowed into the outside air passage (34) flows into the first heat exchanger chamber (37) through the first outside air damper (43), and then passes through the first adsorption heat exchanger (51). pass. In the first adsorption heat exchanger (51), the adsorbent carried on the surface absorbs moisture from the first air, and the refrigerant absorbs heat generated at that time. The first air that has been dehumidified while passing through the first adsorption heat exchanger (51) flows into the supply side passage (31) through the first supply side damper (45) and is supplied to the supply fan (26 ) Is passed through the air supply port (22) and passed into the room.

  On the other hand, the 2nd air which flowed into the inside air side passage (32) flows into the 2nd heat exchanger room (38) through the 2nd inside air side damper (42), and after that, the 2nd adsorption heat exchanger (52 ) In the second adsorption heat exchanger (52), the adsorbent heated by the refrigerant releases moisture, and water vapor released from the adsorbent is given to the second air. The second air provided with water vapor while passing through the second adsorptive heat exchanger (52) flows into the exhaust side passage (33) through the second exhaust side damper (48), and the exhaust fan (25). After passing through, it is discharged outside through the exhaust port (21).

<Humidified ventilation operation>
In the humidity control apparatus (10) during the humidification ventilation operation, a first operation and a second operation described later are alternately repeated at a predetermined time interval (for example, every 3 minutes). During the humidification ventilation operation, the first bypass damper (83) and the second bypass damper (84) are always closed.

  When the air supply fan (26) is operated in the humidity control apparatus (10) during the humidification ventilation operation, outdoor air is taken as the second air into the casing (11) from the outside air inlet (24). Further, when the exhaust fan (25) is operated, room air is taken as first air from the inside air suction port (23) into the casing (11).

  First, the 1st operation | movement of humidification ventilation operation is demonstrated. As shown in FIG. 8, during this first operation, the second inside air side damper (42), the first outside air side damper (43), the first air supply side damper (45), and the second exhaust side damper ( 48) is opened, and the first inside air damper (41), second outside air damper (44), second air supply damper (46), and first exhaust damper (47) are closed.

  In the refrigerant circuit (50) during the first operation, as shown in FIG. 3 (A), the four-way switching valve (54) is set to the first state. In the refrigerant circuit (50), as in the first operation of the dehumidification / ventilation operation, the first adsorption heat exchanger (51) becomes a condenser and the second adsorption heat exchanger (52) becomes an evaporator. Become.

  The 1st air which flowed into the inside air side passage (32) flows into the 2nd heat exchanger room (38) through the 2nd inside air side damper (42), and the 2nd adsorption heat exchanger (52) is passed after that. pass. In the second adsorption heat exchanger (52), the adsorbent carried on the surface absorbs moisture from the first air, and the refrigerant absorbs heat generated at that time. The first air deprived of moisture while passing through the second adsorption heat exchanger (52) flows into the exhaust side passage (33) through the second exhaust side damper (48), and is exhausted from the exhaust fan (25). After passing through, it is discharged to the outside through the exhaust port (21).

  On the other hand, the second air that has flowed into the outside air passage (34) flows into the first heat exchanger chamber (37) through the first outside air damper (43), and then the first adsorption heat exchanger (51). ) In the first adsorption heat exchanger (51), the adsorbent heated by the refrigerant releases moisture, and water vapor released from the adsorbent is given to the second air. The second air humidified while passing through the first adsorption heat exchanger (51) flows into the supply side passage (31) through the first supply side damper (45) and is supplied to the supply fan (26 ) Is passed through the air supply port (22) and passed into the room.

  Next, the second operation of the humidification ventilation operation will be described. As shown in FIG. 9, during the second operation, the first inside air side damper (41), the second outside air side damper (44), the second air supply side damper (46), and the first exhaust side damper ( 47) is opened, and the second inside air damper (42), the first outside air damper (43), the first air supply side damper (45), and the second exhaust side damper (48) are closed.

  In the refrigerant circuit (50) during the second operation, as shown in FIG. 3 (B), the four-way selector valve (54) is set to the second state. In the refrigerant circuit (50), as in the second operation of the dehumidifying ventilation operation, the first adsorption heat exchanger (51) becomes an evaporator and the second adsorption heat exchanger (52) becomes a condenser. Become.

  The first air that has flowed into the room air passage (32) and passed through the room air filter (27) flows into the first heat exchanger chamber (37) through the first room air damper (41), and then Passes through the first adsorption heat exchanger (51). In the first adsorption heat exchanger (51), the adsorbent carried on the surface absorbs moisture from the first air, and the refrigerant absorbs heat generated at that time. The first air deprived of moisture while passing through the first adsorption heat exchanger (51) flows into the exhaust side passage (33) through the first exhaust side damper (47), and the exhaust fan (25). After passing through, it is discharged to the outside through the exhaust port (21).

  On the other hand, the second air flowing into the outside air passage (34) flows into the second heat exchanger chamber (38) through the second outside air damper (44), and then the second adsorption heat exchanger (52). ) In the second adsorption heat exchanger (52), the adsorbent heated by the refrigerant releases moisture, and water vapor released from the adsorbent is given to the second air. The second air humidified while passing through the second adsorption heat exchanger (52) flows into the supply side passage (31) through the second supply side damper (46), and is supplied to the supply fan (26 ) Is passed through the air supply port (22) and passed into the room.

<Simple ventilation operation>
The operation of the humidity control apparatus (10) during the simple ventilation operation will be described with reference to FIG. This simple ventilation operation is performed at a time (for example, an intermediate period such as spring or autumn) in which the indoor comfort is not impaired even if the outside air is supplied to the room as it is. That is, this simple ventilation operation is executed when it is not necessary to adjust the humidity of the air supplied to the room, but it is necessary to ventilate the room.

  In this simple ventilation operation, the first bypass damper (83) and the second bypass damper (84) are opened, and the first inside air damper (41), the second inside air damper (42), and the first outside air side. A damper (43), a second outside air damper (44), a first air supply side damper (45), a second air supply side damper (46), a first exhaust side damper (47), and a second exhaust side damper ( 48) is closed. Further, during the simple ventilation operation, the compressor (53) of the refrigerant circuit (50) is stopped. That is, during the simple ventilation operation, the refrigeration cycle in the refrigerant circuit (50) is not performed.

  When the air supply fan (26) is operated in the humidity control apparatus (10) during the simple ventilation operation, outdoor air is taken into the casing (11) from the outside air inlet (24). The outdoor air that has flowed into the outside air passage (34) through the outside air suction port (24) flows into the first bypass passage (81) after passing through the outside air filter (28), and the first bypass damper (83). Through the air supply fan chamber (36). The outdoor air that has flowed into the air supply fan chamber (36) is sucked into the air supply fan (26) and supplied into the room through the air supply port (22).

  Further, when the exhaust fan (25) is operated in the humidity control apparatus (10) during the simple ventilation operation, the indoor air is taken into the casing (11) from the inside air suction port (23). The room air that has flowed into the room air passage (32) through the room air inlet (23) passes through the room air filter (27) and then flows into the second bypass passage (82), where the second bypass damper (84) Through the exhaust fan chamber (35). The room air that has flowed into the exhaust fan chamber (35) is sucked into the exhaust fan (25) and is discharged to the outside through the exhaust port (21).

-Control action of fan control section-
A control operation performed by the fan control unit (94) of the controller (93) will be described. The fan control unit (94) performs the control operation described below in each of the dehumidifying ventilation operation and the humidifying ventilation operation.

<Change in ventilation resistance of adsorption heat exchanger>
As described above, the adsorbent carried on the adsorption heat exchanger (51, 52) of the present embodiment has a characteristic of swelling by absorbing moisture and contracting by releasing moisture. On the other hand, in the adsorption heat exchanger (51, 52), air passes between the fins (57) arranged at regular intervals. For this reason, when the volume of the adsorbent carried on the surface of the fin (57) changes, the area of the adsorption heat exchanger (51, 52) through which air can pass changes, and the adsorption heat exchanger (51 , 52) Ventilation resistance changes.

  That is, in the process in which the adsorption heat exchanger (51,52) absorbs moisture, the ventilation resistance of the adsorption heat exchanger (51,52) increases as the amount of moisture held by the adsorption heat exchanger (51,52) increases. It will gradually increase. Also, in the process of moisture release by the adsorption heat exchanger (51,52), the ventilation resistance of the adsorption heat exchanger (51,52) decreases as the amount of water held by the adsorption heat exchanger (51,52) decreases. Will gradually decline. Thus, during the operation of the humidity control apparatus (10), the ventilation resistance varies with the moisture absorption / release of the adsorption heat exchanger (51, 52).

  In this description, “the ventilation resistance of the adsorption heat exchanger (51, 52)” means “when the front wind speed of the adsorption heat exchanger (51, 52) is the rated value, the air is absorbed by the adsorption heat exchanger (51 , 52) means pressure loss when passing through. “Front wind speed of adsorption heat exchanger (51, 52)” means “volume flow rate of air passing through adsorption heat exchanger (51, 52), front area of adsorption heat exchanger (51, 52)” The value obtained by dividing by “.

  As shown in FIGS. 11A and 11B, during the operation of the humidity control apparatus (10), the ventilation resistance of the adsorption heat exchanger (51, 52) is switched between the first operation and the second operation. Increase or decrease correspondingly. FIGS. 12A and 12B are the same as FIGS. 11A and 11B, respectively.

As described above, in the humidity control apparatus (10) during the dehumidification / ventilation operation and the humidification / ventilation operation, the first operation and the second operation are alternately repeated at predetermined time intervals. The first adsorption heat exchanger (51) releases moisture during the first operation and absorbs moisture during the second operation. Therefore, ventilation resistance of the first adsorption heat exchanger (51), as shown by the solid line in FIG. 11 (A), the first operation reaches the [Delta] P ₁ and gradually decreases from the [Delta] P _2, the second operation in Gradually increases from ΔP ₁ to reach ΔP ₂ . On the other hand, the second adsorption heat exchanger (52) absorbs moisture during the first operation and releases it during the second operation. Therefore, ventilation resistance of the second adsorption heat exchanger (52), as shown by a chain line in FIG. 11 (B), the first operation reaches the [Delta] P ₂ and gradually increases from [Delta] P _1, a second operation Some decrease gradually from ΔP ₂ to reach ΔP ₁ .

<Control action of fan control unit during dehumidification ventilation operation>
In the humidity control apparatus (10) during the dehumidification / ventilation operation, the air supply fan (26) sucks the air that has passed through the second adsorption heat exchanger (52) that is absorbing moisture during the first operation, and during the second operation. Inhales air that has passed through the first adsorption heat exchanger (51) that is absorbing moisture. Therefore, ventilation resistance of the adsorption heat exchangers air drawn into the supply fan (26) passes (51, 52), as shown in FIG. 11 (C), gradually increase from [Delta] P ₁ during the first operation Te reaches [Delta] P _2, first becomes [Delta] P ₁ at the time of switching to the second operation from the operation, gradually increased reached [Delta] P ₂ by a [Delta] P ₁ again during the second operation, switches from the second operation to the first operation At the time of change, ΔP ₁ is obtained again.

  Thus, in the humidity control apparatus (10) during the dehumidifying ventilation operation, the ventilation resistance of the adsorption heat exchanger (51, 52) through which the air sucked into the air supply fan (26) passes periodically increases and decreases. For this reason, if the rotational speed of the air supply fan (26) remains constant, the flow rate of the air blown from the air supply fan (26) gradually decreases during the first operation, and from the first operation to the first operation. It increases at the time of switching to the second operation, returns to the original state, gradually decreases again during the second operation, and increases again to return to the original state at the time of switching from the second operation to the first operation.

Therefore, the fan control unit (94) adjusts the rotational speed of the air supply fan (26) in order to suppress fluctuations in the flow rate of the air blown from the air supply fan (26). Then, the rotational speed of the air supply fan (26) during the dehumidifying ventilation operation, as a result, adjusted by the fan control unit (94), as shown in FIG. 11 (D), gradually increases from S ₁ to first operation from then reached S _2, the back pulled S ₁ when the first operation is switched to the second operation, the second operation and gradually increases from S ₁ again reaches S _2, a second operation It pulled again at the time of switching to the first operation returns to S _1.

In FIG. 11 (D), in order to simplify the explanation, the rotational speed of the air supply fan (26) when the first operation and the second operation is switched to each other in an instant from S ₂ to S ₁ Although shown so as to decrease, the actual rotational speed of the air supply fan (26) does not change significantly in an instant. Rotational speed of the actual air supply fan (26) is lowered from S ₂ to S ₁ over a relatively short period of time (for example, about 10 seconds).

On the other hand, in the humidity control apparatus (10) during the dehumidification / ventilation operation, the exhaust fan (25) sucks the air that has passed through the first adsorption heat exchanger (51) during moisture release during the first operation. During operation, the air that has passed through the second adsorption heat exchanger (52) that is being dehumidified is sucked in. Thus, exhaust flow resistance of the fan adsorption heat exchanger through which air passes to be drawn into (25) (51, 52), as shown in FIG. 12 (C), gradually decreases from the [Delta] P ₂ during the first operation reached [Delta] P _1, the first operation from the second [Delta] P ₂ becomes in turn unusual time in operation, gradually reaches reduced to the [Delta] P ₁ again from [Delta] P ₂ during the second operation, switched from the second operation to the first operation At this point, ΔP ₂ is reached again.

  Thus, in the humidity control apparatus (10) during the dehumidifying ventilation operation, the ventilation resistance of the adsorption heat exchanger (51, 52) through which the air sucked into the exhaust fan (25) passes periodically increases and decreases. For this reason, if the rotational speed of the exhaust fan (25) remains constant, the flow rate of the air blown from the exhaust fan (25) gradually increases during the first operation, and from the first operation to the second operation. At the time of switching to, it decreases and returns to the original state, gradually increases again during the second operation, and decreases again when it switches from the second operation to the first operation.

Therefore, the fan control unit (94) adjusts the rotational speed of the exhaust fan (25) in order to suppress fluctuations in the flow rate of the air blown from the exhaust fan (25). Then, the rotational speed of the exhaust fan (25) during the dehumidifying ventilation operation, the fan control unit (94) Results regulated by, as shown in FIG. 12 (D), gradually decreases from S ₂ during the first operation Te reaches S _1, back pulled in the S ₂ when the first operation is switched to the second operation, reaches the S ₁ decreases gradually again from S ₂ to the second operation, the second operation raised again at the time of cut behalf was in one operation returns to S _2.

In FIG. 12 (D), in order to simplify the explanation, the rotational speed of the exhaust fan (25) when the first operation and the second operation is switched to each other rises instantly from S ₁ to S ₂ However, the actual rotational speed of the exhaust fan (25) does not change significantly in an instant. Rotational speed of actual exhaust fan (25) rises from S ₁ to S ₂ over a relatively short period of time (for example, about 10 seconds).

As a change pattern of the rotational speed of the air supply fan (26) used during the dehumidification ventilation operation, the fan control unit (94) sets the rotational speed of the air supply fan (26) to the duration of the first operation or the second operation. increased proportionally from S ₁ to the S _2, stores in advance a pattern "in which the first operation and the second operation pulls the rotational speed of the air supply fan (26) to S ₁ from S ₂ when switched to each other is doing. Further, the fan control unit (94) sets the rotation speed of the exhaust fan (25) to the duration of the first operation or the second operation as a change pattern of the rotation speed of the exhaust fan (25) used during the dehumidifying ventilation operation. proportionally decreased from S ₂ to the S _1, the rotational speed of the exhaust fan at the time when the first operation and the second operation is switched to each other (25) previously stores pattern "to increase from S ₁ to S ₂ ing. During the dehumidifying ventilation operation, the fan control unit (94) includes a change pattern for the dehumidifying ventilation operation in which the actual change history of the rotational speed of the air supply fan (26) and the exhaust fan (25) is stored in advance. The rotational speeds of the air supply fan (26) and the exhaust fan (25) are adjusted so as to match.

<Control action of fan control unit during humidification ventilation operation>
In the humidity control apparatus (10) during the humidification ventilation operation, the air supply fan (26) sucks the air that has passed through the first adsorptive heat exchanger (51) being dehumidified during the first operation, and performs the second operation. The air that has passed through the second adsorptive heat exchanger (52) is inhaled. Therefore, ventilation resistance of the adsorption heat exchanger through which air passes to be drawn into the supply fan (26) (51, 52), as shown in FIG. 12 (C), gradually decreases from the [Delta] P ₂ during the first operation Te reaches [Delta] P _1, the first operation from the second [Delta] P ₂ becomes in turn unusual time in operation, gradually reaches [Delta] P ₁ and decreases again from the [Delta] P ₂ during the second operation, switches from the second operation to the first operation again the ΔP ₂ at the time the unusual.

Note that the indoor and outdoor air conditions (temperature and relative humidity) differ between the humidification ventilation operation and the dehumidification ventilation operation. Therefore, the values of ΔP ₁ and ΔP ₂ are different between the humidification ventilation operation and the dehumidification ventilation operation.

  Thus, in the humidity control apparatus (10) during the humidification ventilation operation, the ventilation resistance of the adsorption heat exchanger (51, 52) through which the air sucked into the air supply fan (26) passes periodically increases and decreases. For this reason, if the rotation speed of the air supply fan (26) remains constant, the flow rate of the air blown from the air supply fan (26) gradually increases during the first operation, and increases from the first operation to the first operation. At the time of switching to the second operation, it decreases and returns to the original state, gradually increases again during the second operation, and decreases again to return to the original state at the time of switching from the second operation to the first operation.

Therefore, the fan control unit (94) adjusts the rotational speed of the air supply fan (26) in order to suppress fluctuations in the flow rate of the air blown from the air supply fan (26). Then, the rotational speed of the air supply fan (26) during the humidifying ventilation operation, the fan control unit (94) Results regulated by, as shown in FIG. 12 (D), gradually decreases from S ₂ during the first operation was reached S _1, the back pulled in the S ₂ when the first operation is switched to the second operation, it reaches the S ₁ decreases gradually again from S ₂ to the second operation, the second operation It raised again at the time of switching to the first operation returns to S _2.

In FIG. 12 (D), in order to simplify the explanation, the rotational speed of the air supply fan (26) when the first operation and the second operation is switched to each other in an instant from S ₁ to S ₂ Although shown to rise, the actual rotational speed of the air supply fan (26) does not change significantly in an instant. Rotational speed of the actual air supply fan (26) rises from S ₁ to S ₂ over a relatively short period of time (for example, about 10 seconds).

On the other hand, in the humidity control apparatus (10) during the humidification ventilation operation, the exhaust fan (25) sucks air that has passed through the second adsorption heat exchanger (52) that is absorbing moisture during the first operation, and performs the second operation. The air that has passed through the first adsorption heat exchanger (51) that is absorbing moisture is sucked into the inside. Thus, exhaust flow resistance of the fan adsorption heat exchanger through which air passes to be drawn into (25) (51, 52), as shown in FIG. 11 (C), gradually increase from [Delta] P ₁ during the first operation reached [Delta] P _2, the first operation from the second next [Delta] P ₁ when cut unusual in operation, gradually increased reached [Delta] P ₂ by a [Delta] P ₁ again during the second operation, switched from the second operation to the first operation At this time, ΔP ₁ is obtained again.

  Thus, in the humidity control apparatus (10) during the humidification ventilation operation, the ventilation resistance of the adsorption heat exchanger (51, 52) through which the air sucked into the exhaust fan (25) passes periodically increases and decreases. For this reason, if the rotational speed of the exhaust fan (25) remains constant, the flow rate of the air blown from the exhaust fan (25) gradually decreases during the first operation, and from the first operation to the second operation. It increases at the time of switching to, returns to the original, gradually decreases again during the second operation, and increases again to return to the original at the time of switching from the second operation to the first operation.

Therefore, the fan control unit (94) adjusts the rotational speed of the exhaust fan (25) in order to suppress fluctuations in the flow rate of the air blown from the exhaust fan (25). Then, the rotational speed of the exhaust fan (25) during the humidifying ventilation operation, the fan control unit (94) Results regulated by, as shown in FIG. 11 (D), gradually increases from S ₁ to first operation Te reaches S _2, pulled when the first operation is switched to the second operation returns to S _1, gradually rises and reaches the S ₂ again from S ₁ to the second operation, the second operation pulled down again at the time of cut behalf was in one operation returns to S _1.

In FIG. 11 (D), in order to simplify the explanation, the rotational speed of the exhaust fan (25) when the first operation and the second operation is switched to each other decreases instantly from S ₂ to S ₁ However, the actual rotational speed of the exhaust fan (25) does not change significantly in an instant. Rotational speed of actual exhaust fan (25) is lowered from S ₂ to S ₁ over a relatively short period of time (for example, about 10 seconds).

As a change pattern of the rotational speed of the air supply fan (26) used during the humidified ventilation operation, the fan control unit (94) sets the rotational speed of the air supply fan (26) to the duration of the first operation or the second operation. proportionally decreased from S ₂ to the S _1, pre-stored pattern "in which the first operation and the second operation raising the rotational speed of the air supply fan (26) when switched to each other from S ₁ to S ₂ is doing. Further, the fan control unit (94) sets the rotation speed of the exhaust fan (25) to the duration of the first operation or the second operation as a change pattern of the rotation speed of the exhaust fan (25) used during the humidification ventilation operation. proportionally increased from S ₁ to the S _2, the rotational speed previously stores pattern "to lower the S ₂ to S ₁ of the exhaust fan at the time when the first operation and the second operation is switched to the other (25) ing. During the humidification ventilation operation, the fan control unit (94) includes a change pattern for the humidification ventilation operation in which the actual change history of the rotational speed of the air supply fan (26) and the exhaust fan (25) is stored in advance. The rotational speeds of the air supply fan (26) and the exhaust fan (25) are adjusted so as to match.

Note that, as described above, the minimum value ΔP ₁ and the maximum value ΔP ₂ of the ventilation resistance of the adsorption heat exchanger (51, 52) during the operation of the humidity control apparatus (10) are during the humidification ventilation operation and the dehumidification ventilation operation. And different values. Therefore, minimum values S ₁ and the maximum value S ₂ the rotational speed of the air supply fan (26) and the exhaust fan (25) also, a different value between in the dehumidifying ventilation operation and in a humidified ventilation operation.

-Effect of the embodiment-
In this embodiment, the adsorption heat exchanger (51, 52) is provided with an adsorbent that swells by absorbing moisture and contracts by releasing moisture, and the ventilation resistance of the adsorption heat exchanger (51, 52) is It fluctuates according to the amount of water held by the adsorption heat exchanger (51, 52). In the present embodiment, the fan control unit (94) controls the rotation speeds of the air supply fan (26) and the exhaust fan (25) according to the amount of moisture held in the adsorption heat exchanger (51, 52). Adjust. Therefore, according to this embodiment, the flow rate of the air that passes through the adsorption heat exchanger (51, 52) and is supplied to the room, or passes through the adsorption heat exchanger (51, 52) and is discharged outside the room. The fluctuation of the air flow rate can be suppressed, and the comfort of the occupants can be ensured.

  Further, the fan control unit (94) of the present embodiment selects one corresponding to the operation mode being executed from among the change patterns of the rotational speed of the air supply fan (26) and the exhaust fan (25) stored in advance. The rotational speeds of the air supply fan (26) and the exhaust fan (25) are adjusted in accordance with the selected change pattern. That is, the fan control unit (94) of this embodiment adjusts the rotational speeds of the air supply fan (26) and the exhaust fan (25) according to a change pattern stored in advance without performing a complicated control operation. Therefore, according to the present embodiment, a change in the flow rate of the air supplied to the room can be suppressed by causing the fan control unit (94) to perform a simple control operation.

-Modification 1 of embodiment-
In the humidity control apparatus (10) of the present embodiment, the fan control unit (94) of the controller (93) is not based on the change pattern stored in advance, but various types indicating the actual operation state of the humidity control apparatus (10). You may be comprised so that the rotational speed of an air supply fan (26) and an exhaust fan (25) may be adjusted based on the measured value of a sensor.

<First Modification>
The fan control unit (94) of the first modification will be described.

  The fan control unit (94) of this modification is input with the measured value of the inside air temperature / humidity sensor (96) and the measured value of the outside air temperature / humidity sensor (97). Although not shown, the refrigerant circuit (50) of the present modification includes a suction pressure sensor that measures the pressure of the refrigerant sucked into the compressor (53), and the pressure of the refrigerant discharged from the compressor (53). Are connected to the discharge pressure sensor, and the measured values of these pressure sensors are input to the fan control section (94).

  The fan control unit (94) of this modification calculates the refrigerant evaporation temperature from the measured value of the suction pressure sensor, and calculates the refrigerant condensing temperature from the measured value of the discharge pressure sensor. If the evaporating temperature and condensing temperature of the refrigerant and the temperature and relative humidity of the air passing through the adsorption heat exchanger (51, 52) are known, the adsorption heat exchanger (51, 51) in a single first operation or second operation. 52) can estimate the amount of water vapor absorbed and released. If the amount of water vapor absorbed and released by the adsorption heat exchanger (51, 52) in one first operation or second operation is known, the heat exchange during the first operation or the second operation is determined from that value. The amount of change in draft resistance of the vessel (51, 52) can be estimated.

Therefore, the fan control unit (94) performs the first operation or the second operation based on the calculated refrigerant evaporation temperature and condensation temperature and the measured values of the internal air temperature / humidity sensor (96) and the external air temperature / humidity sensor (97). The amount of change in the ventilation resistance of the adsorption heat exchanger (51, 52) during operation (that is, the minimum value ΔP ₁ and the maximum value ΔP _{2 of} the ventilation resistance) is estimated, and the air supply fan (26) and the exhaust fan (25) of the rotation speed of the change width (i.e., the minimum values S ₁ of the rotational speed and the maximum value S ₂₎ to determine. And a fan control part (94) adjusts the rotational speed of an air supply fan (26) and an exhaust fan (25) based on the determined change width of rotational speed. The fan control unit (94) of the present modified example performs an operation for determining the change width of the rotational speed of the air supply fan (26) and the exhaust fan (25) from the measured values of each sensor at a predetermined time interval (eg, 1 hour) Repeat every).

<Second modification>
The fan control unit (94) of the second modification will be described.

  The fan control unit (94) of this modification is input with the measured value of the inside air temperature / humidity sensor (96) and the measured value of the outside air temperature / humidity sensor (97). Although not shown, the humidity control device (10) of the present modification includes power consumption of the fan motor (89) of the supply fan (26) and power consumption of the fan motor (89) of the exhaust fan (25). A wattmeter that individually measures the power meter is provided, and a measured value of the wattmeter is input to the fan control unit (94).

  The fan control unit (94) of the present modified example has the rated air flow rate (temperature and relative humidity) flowing toward the fan (25, 26) and the flow rate of air blown from the fan (25, 26). The relationship with the power consumption of the fan motor (89) is stored in advance. The fan control unit (94) is configured to store the fan motor (89) of each fan (25, 26) based on the relationship stored in advance and the measured values of the internal air temperature and humidity sensor (96) and the external air temperature and humidity sensor (97). Set the target value of power consumption. And this fan control part (94) makes each measured value (namely, measured value of a power meter) of the power consumption of the fan motor (89) of each fan (25, 26) each set target value. Adjust the rotation speed of the fan (25,26). When the fan control unit (94) adjusts the rotational speed of each fan (25, 26) in this way, the flow rate of air blown out from each fan (25, 26) is maintained at the rated value.

<Third Modification>
The fan control unit (94) of the third modification will be described.

  As shown in FIG. 13, the humidity control apparatus (10) of the present modification is provided with an air supply side wind speed sensor (98) and an exhaust side wind speed sensor (99). The air supply side wind speed sensor (98) is provided in the air supply fan chamber (36), and constitutes a measuring instrument that measures the flow velocity of the air sucked into the air supply fan (26). The exhaust side wind speed sensor (99) is provided in the exhaust fan chamber (35), and constitutes a measuring instrument that measures the flow rate of the air sucked into the exhaust fan (25).

  The measured value of the supply side wind speed sensor (98) and the measured value of the exhaust side wind speed sensor (99) are input to the fan control unit (94) of this modification. On the other hand, the fan control unit (94) stores the wind speed in the supply fan chamber (36) when the flow rate of the air blown from the supply fan (26) reaches the rated value as the target supply-side wind speed. The wind speed in the exhaust fan chamber (35) when the flow rate of the air blown from the exhaust fan (25) reaches the rated value is stored as the target exhaust side wind speed. The fan control unit (94) adjusts the rotational speed of the air supply fan (26) so that the measured value of the air supply side wind speed sensor (98) becomes the target air supply side wind speed, and the exhaust side wind speed sensor (99). ) Rotate the exhaust fan (25) so that the measured value becomes the target exhaust-side wind speed.

-Modification 2 of embodiment-
In each of the present embodiment and the first to third modifications, the fan control unit (94) adjusts only the rotation speed of the air supply fan (26) and keeps the rotation speed of the exhaust fan (25) constant. The operation to be performed may be configured as a control operation. Specifically, the fan control unit of the present modification (94), the rotational speed of the air supply fan (26), in response to a change in ventilation resistance of the adsorption heat exchangers (51, 52), the minimum values S ₁ increased or decreased between the maximum value S _2. On the other hand, the fan control unit (94), the rotational speed of the exhaust fan (25) is kept to a minimum value intermediate the values of S ₁ and the maximum value S ₂ of the rotational speeds of the air supply fan (26).

  In the humidity control apparatus (10) of the present modification, the flow rate of the air blown out from the exhaust fan (25) toward the outside varies as the ventilation resistance of the adsorption heat exchanger (51, 52) changes. However, if the flow rate of air supplied from the humidity control device (10) to the room is kept substantially constant, the comfort level in the room will be small even if the flow rate of air discharged from the room to the outside varies somewhat. Not damaged. Therefore, as in this modification, only the rotational speed of the air supply fan (26), which has a large effect on indoor comfort, is adjusted, and the rotational speed of the exhaust fan (25), which has a small effect on indoor comfort, is adjusted. It may be kept constant.

—Modification 3 of Embodiment—
In each of the first to third modifications, the fan control unit (94) periodically records the rotational speed of the air supply fan (26) and the exhaust fan (25), and based on the recorded rotational speed value. It may be configured to diagnose the presence or absence of trouble. For example, if the rotational speed of the air supply fan (26) or the exhaust fan (25) is higher than the assumed fluctuation range, for example, “dirt accumulates in the adsorption heat exchanger (51, 52) and the ventilation There may be a problem that the resistance is abnormally rising. Therefore, the fan control unit (94) of this modification diagnoses the presence / absence of a trouble based on the recorded rotational speed value, and if it is assumed that some trouble has occurred, a display unit such as a remote controller Display a warning to that effect.

-Modification 4 of the embodiment-
In the present embodiment and each modification, the humidity control apparatus (10) may be configured as follows.

  As shown in FIG. 14, the humidity control apparatus (10) of this modification includes a refrigerant circuit (100) and two adsorbing elements (111, 112). The refrigerant circuit (100) is a closed circuit in which a compressor (101), a condenser (102), an expansion valve (103), and an evaporator (104) are connected in order. When the refrigerant is circulated in the refrigerant circuit (100), a vapor compression refrigeration cycle is performed. This refrigerant circuit (100) constitutes heat source means. The first adsorbing element (111) and the second adsorbing element (112) are provided with the same adsorbent as in the above-described embodiment (that is, an adsorbent whose volume changes in accordance with moisture absorption / release), and each is for humidity control. The element is configured. In addition, a large number of air passages are formed in each adsorption element (111, 112), and air contacts the adsorbent when passing through the air passages.

  The humidity control apparatus (10) repeats the first operation and the second operation. As shown in FIG. 14A, the humidity controller (10) in the first operation supplies air heated by the condenser (102) to the first adsorption element (111) to regenerate the adsorbent. On the other hand, the air deprived of moisture by the second adsorption element (112) is cooled by the evaporator (104). In addition, as shown in FIG. 14B, the humidity control apparatus (10) in the second operation supplies air heated by the condenser (102) to the second adsorption element (112) to supply the adsorbent. While regenerating, the air deprived of moisture by the first adsorption element (111) is cooled by the evaporator (104). The humidity control apparatus (10) includes a dehumidifying operation for supplying air dehumidified when passing through the adsorption element (111, 112) into the room, and the air humidified when passing through the adsorption element (111, 112) in the room. Switching between humidification operation to be supplied to.

-Modification 5 of embodiment-
In the present embodiment and each modification, the humidity control apparatus (10) may be configured as follows.

  As shown in FIG. 15, the humidity control apparatus (10) of the present modification includes a humidity control unit (150). The humidity control unit (150) includes a Peltier element (153) and a pair of suction fins (151 and 152). The adsorption fins (151 and 152) are obtained by supporting the same adsorbent as in the above-described embodiment (that is, an adsorbent whose volume changes with moisture absorption / release) on the surface of a so-called heat sink. The suction fins (151 and 152) constitute a humidity control element. The Peltier element (153) has a first suction fin (151) bonded to one surface and a second suction fin (152) bonded to the other surface. When direct current is passed through the Peltier element (153), one of the two suction fins (151, 152) becomes the heat absorption side and the other becomes the heat dissipation side.

  The humidity control apparatus (10) repeats the first operation and the second operation. The humidity control unit (150) in the first operation regenerates the adsorbent of the first adsorption fin (151) on the heat dissipation side to humidify the air, while the second adsorption fin (152) on the heat absorption side. The air is dehumidified by absorbing the adsorbent. The humidity control unit (150) in the first operation regenerates the adsorbent of the second adsorption fin (152) on the heat dissipation side to humidify the air, while the first adsorption fin (on the heat absorption side) Absorb moisture by adsorbent of 151). The humidity control apparatus (10) includes a dehumidifying operation for supplying air dehumidified when passing through the humidity control unit (150) to the room, and air humidified when passing through the humidity control unit (150). The operation is switched to the humidifying operation for supplying the air to the room.

-Modification 6 of embodiment-
In the refrigerant circuit (50) of the present embodiment and each modification, a supercritical cycle in which the high pressure of the refrigeration cycle is set to a value higher than the critical pressure of the refrigerant may be performed. In that case, one of the first adsorption heat exchanger (51) and the second adsorption heat exchanger (52) operates as a gas cooler, and the other operates as an evaporator.

  Moreover, in the humidity control apparatus (10) of this embodiment and each modification, it adsorb | sucks by supplying cold water and warm water with respect to a 1st adsorption heat exchanger (51) and a 2nd adsorption heat exchanger (52). The agent may be heated or cooled. In this case, a pipe for supplying cold water or hot water to the adsorption heat exchanger (51, 52) is a heat medium circuit in which cold water that is a heat medium for cooling and hot water that is a heat medium for heating flow. Is configured.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or its use.

  As described above, the present invention is useful for a humidity control apparatus for adjusting indoor humidity.

10 Humidity control device
25 Exhaust fan
26 Air supply fan
50 Refrigerant circuit (heat medium circuit)
51 First adsorption heat exchanger (element for humidity control)
52 Second adsorption heat exchanger (element for humidity control)
57 fins
58 Heat transfer tube
89 Fan motor (electric motor)
94 Fan controller (controller)
97 Outside temperature humidity sensor (measuring instrument)
98 Supply side wind speed sensor (velocimeter)
111 First adsorption element (element for humidity control)
112 2nd adsorption element (element for humidity control)
151 First adsorption fin (element for humidity control)
152 2nd adsorption fin (element for humidity control)

Claims (11)

Humidity control elements (51, 52) that transfer moisture to and from the passing air, an air supply fan (26) that blows out the sucked air into the room, and an exhaust fan that blows out the sucked air into the room (25)
The humidity control element (51, 52) alternately and repeatedly absorbs and releases moisture, and the air that has passed through the moisture adjusting element (51, 52) and the humidity adjusting element (52 , 51) is a humidity control device that supplies one of the air that has passed through the room and discharges the other into the room,
On the humidity control element (51, 52), an adsorbent that swells by absorbing moisture and contracts by releasing moisture is provided so as to come into contact with air,
In order to suppress fluctuations in the flow rate of the air supplied to the room, the humidity control element (51, 52) through which the air supplied to the room passes has the rotational speed of the air supply fan (26). A humidity control apparatus comprising a controller (94) that adjusts according to the amount of moisture to be produced. In claim 1,
At least a dehumidifying operation for supplying air that has passed through the humidity control element (52, 51) during moisture absorption to the room and discharging the air that has passed through the humidity control element (51, 52) during moisture release to the outside. While doing
During the dehumidifying operation, the controller (94) gradually increases the rotational speed of the air supply fan (26) while the humidity control element (52, 51) absorbs moisture. Humidity control device. In claim 2,
The controller (94) controls the exhaust fan (51, 52) while the humidity control element (51, 52) is dehumidifying in order to suppress fluctuations in the flow rate of the air discharged to the outside during the dehumidifying operation. 25) A humidity control apparatus characterized by gradually decreasing the rotation speed. In claim 2,
A plurality of the humidity control elements, a first operation in which the first humidity control element (51) releases moisture and the second humidity control element (52) absorbs moisture; and the second humidity control element While the second operation in which the element (52) for moisture release and the first humidity control element (51) absorbs moisture is repeated alternately,
During the dehumidifying operation, the controller (94) gradually increases the rotational speed of the air supply fan (26) during the continuation of the first operation and the second operation, and the first operation and the second operation are mutually performed. A humidity control apparatus that reduces the rotational speed of the air supply fan (26) when switching. In claim 1,
At least a humidifying operation for supplying the air that has passed through the humidity control element (51, 52) during moisture release to the room and discharging the air that has passed through the humidity control element (52, 51) during moisture absorption to the outside. While doing
During the humidification operation, the controller (94) gradually reduces the rotational speed of the air supply fan (26) while the humidity control element (51, 52) is dehumidifying. Humidity control device. In claim 5,
The controller (94) controls the exhaust fan (25) while the humidity control element (52, 51) absorbs moisture in order to suppress fluctuations in the flow rate of the air discharged to the outside during the humidification operation. ) Is gradually increased. In claim 5,
A plurality of the humidity control elements, a first operation in which the first humidity control element (51) releases moisture and the second humidity control element (52) absorbs moisture; and the second humidity control element While the second operation in which the element (52) for moisture release and the first humidity control element (51) absorbs moisture is repeated alternately,
During the humidification operation, the controller (94) gradually decreases the rotational speed of the air supply fan (26) during the continuation of the first operation and the second operation, and the first operation and the second operation are mutually performed. A humidity control apparatus that increases the rotational speed of the air supply fan (26) when switching. In any one of Claims 1 thru | or 7,
The humidity control element (51, 52) includes a plurality of fins (57) each having an adsorbent supported on the surface, and a heat transfer tube (58) joined to each fin (57) and through which a heat medium flows. While
In order to absorb moisture in the humidity control element (51, 52), a cooling heat medium is supplied to the heat transfer tube (58) of the humidity control element (51, 52), and the humidity control element (51, 52) is supplied. And a heat medium circuit (50) for supplying a heat medium for heating to the heat transfer tube (58) of the humidity control element (51, 52) in order to release moisture to the humidity control device. . In claim 1,
A dehumidifying operation for supplying the air that has passed through the humidity control element (52, 51) under moisture absorption to the room and exhausting the air that has passed through the humidity control element (51, 52) during moisture release to the outside; Humidification operation for supplying the air that has passed through the humidity control element (51, 52) during moisture release to the room and discharging the air that has passed through the humidity control element (52, 51) during moisture absorption to the outside. A plurality of operation modes including at least can be executed,
The controller (94) individually stores a change pattern of the rotational speed of the air supply fan (26) during execution of each operation mode, and corresponds to the operation mode being executed among the stored change patterns. A humidity control device that controls the rotational speed of the air supply fan (26) based on the air supply. In claim 1,
While equipped with a measuring instrument (97) that measures the temperature and humidity of the air flowing into the room upstream of the humidity control element (51, 52),
The controller (94) sets a target value of power consumption of the electric motor (89) that drives the air supply fan (26) based on the measured value of the measuring device (97), and the air supply fan (26 The humidity control apparatus is characterized in that the rotational speed of the air supply fan (26) is controlled so that the power consumption of the electric motor (89) that drives the air supply becomes a set target value. In claim 1,
While equipped with an anemometer (98) that measures the flow velocity of air flowing into the room,
The controller (94) adjusts the rotation speed of the air supply fan (26) so that the measured value of the anemometer (98) is maintained at a predetermined target value.

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