JP2007010231A - Humidity conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detecting a clogging state of filter members 27, 28 without complicating a constitution of a humidity conditioner 10, in the humidity conditioner 10 comprising the filter members 27, 28 for cleaning the taken air. <P>SOLUTION: This humidity conditioner is provided with a filter state detecting means 63 for detecting the clogging state of the filter members 27, 28 on the basis of a detection value of a suction air humidity detecting means 65 and a detection value of a supply air humidity detecting means 66. The suction air humidity detecting means 65 and the supply air humidity detecting means 66 are used in controlling an operating state of the humidity conditioner 10, and also used in detecting the clogging state of the filter members 27, 28. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a humidity control apparatus for adjusting humidity in a room.

  2. Description of the Related Art Conventionally, humidity control apparatuses that adjust indoor humidity by adsorbing or desorbing moisture from an adsorbent are known.

For example, Patent Document 1 discloses a humidity control apparatus that supplies the outdoor air that has been taken into the room after the humidity is adjusted. This humidity control apparatus is provided with a refrigerant circuit to which a compressor, an expansion valve, and an adsorption heat exchanger carrying an adsorbent are connected. This humidity control apparatus is configured to be able to switch between a dehumidifying operation and a humidifying operation. In the dehumidifying operation, the adsorbent is cooled by the refrigerant evaporated in the adsorption heat exchanger, and moisture in the air passing through the adsorption heat exchanger is adsorbed by the adsorbent. In the humidification operation, the adsorbent is heated by the refrigerant condensed in the adsorption heat exchanger, and moisture desorbed from the adsorbent is given to the air passing through the adsorption heat exchanger.
JP 2004-294048 A

  By the way, the humidity control apparatus as described above may be provided with a filter member in order to clean the taken-in air. The filter member needs to be cleaned or replaced when clogging progresses. It would be convenient if the time for cleaning or replacement could be notified. Therefore, conventionally, a sensor (for example, a wind speed sensor) for detecting clogging of the filter is provided in the humidity control device, and the clogging state of the filter member is detected based on the detection value of the sensor. However, when a sensor is provided to detect clogging of the filter member, there is a problem that the manufacturing cost of the humidity control device increases accordingly.

  The present invention has been made in view of such points, and an object of the present invention is to provide a humidity control apparatus including a filter member for purifying the taken-in air without complicating the configuration. The object is to detect the clogging of the member.

  The first invention comprises a filter member (27, 28) for purifying the taken-in air and an adsorbent that contacts the air that has passed through the filter member (27, 28), and the humidity of the taken-in air is adjusted. Assuming a humidity control device (10) to supply indoors. Intake air humidity detection means (65) for measuring the humidity of the air to be taken in, supply air humidity detection means (66) for measuring the humidity of the air supplied to the room, detection values of the intake air humidity detection means (65) and Filter state detection means (63) for detecting the clogged state of the filter member (27, 28) based on the detection value of the supply air humidity detection means (66).

  In the first invention, after the intake humidity detecting means (65) measures the humidity of the air before contacting the adsorbent, that is, the air before the humidity is adjusted, and the supply air humidity detecting means (66) is adjusted for humidity. Measure the humidity of the air. From the detection value of the intake humidity detection means (65) and the detection value of the supply air humidity detection means (66), the amount of change in air humidity before and after contacting the adsorbent is derived.

  Here, the clogged state of the filter members (27, 28) affects the air volume of the air in contact with the adsorbent. In addition, the air volume in contact with the adsorbent affects the amount of water transferred between the adsorbent and the air in contact with the adsorbent, and the amount of change in air humidity before and after contact with the adsorbent. give. That is, when the air volume of the air contacting the adsorbent decreases, the wind speed when contacting the adsorbent decreases accordingly. When the wind speed decreases, the turbulence of the air flow also decreases, so the amount of moisture transferred between the air and the adsorbent decreases. Thus, there is a correlation between the amount of air coming into contact with the adsorbent and the amount of water transferred between the air and the adsorbent. Moreover, the air volume of the air that contacts the adsorbent is the same as the air volume of the air passing through the filter member (27, 28), and varies depending on the degree of clogging of the filter member (27, 28). Therefore, in the present invention, the clogged state of the filter member (27, 28) is detected based on the detection value of the intake humidity detection means (65) and the detection value of the supply air humidity detection means (66).

  In a second aspect based on the first aspect, the filter state detection means (63) is based on the detection value of the intake humidity detection means (65) and the detection value of the supply air humidity detection means (66). An air volume estimating section (64) for estimating the air volume of the air passing through the filter member (27, 28) is provided, and the air volume estimated by the air volume estimating section (64) and detection in the initial state of the filter member (27, 28) The clogged state of the filter member (27, 28) is detected based on the air volume estimated by the air volume estimating unit (64) at the time.

  In the second invention, the amount of change in air humidity before and after contacting the adsorbent is derived from the detection value of the intake humidity detection means (65) and the detection value of the supply air humidity detection means (66). As described above, the amount of air flowing in contact with the adsorbent, that is, the amount of air passing through the filter members (27, 28) is estimated from the amount of change in air humidity before and after contacting the adsorbent. Therefore, the clogged state of the filter member (27, 28) is detected from the air volume of the air passing through the filter member (27, 28).

  3rd invention is equipped with the filter member (27,28) which cleans the taken-in air, and the adsorbent which contacts the air which passed this filter member (27,28), and adjusts humidity of the taken-in air In addition, the humidity control device (10) that controls the temperature and supplies it indoors is assumed. Intake air temperature detecting means (65) for measuring the temperature of the air taken in, supply air temperature detecting means (66) for measuring the temperature of the air supplied to the room, detection values of the intake air temperature detecting means (65), and Filter state detection means (63) for detecting the clogged state of the filter member (27, 28) based on the detection value of the supply air temperature detection means (66).

  In the third invention, the temperature of the air before the intake air temperature detection means (65) contacts the adsorbent, that is, the air before the temperature adjustment is measured, and the temperature of the supply air temperature detection means (66) is adjusted. Measure the air temperature. From the detection value of the intake air temperature detection means (65) and the detection value of the supply air temperature detection means (66), the amount of air temperature change before and after contacting the adsorbent is derived.

  Here, the clogged state of the filter members (27, 28) affects the air volume of the air in contact with the adsorbent. In addition, the air volume in contact with the adsorbent affects the amount of heat exchange between the adsorbent and the air in contact with the adsorbent, and affects the amount of air temperature change before and after contacting the adsorbent. . That is, when the air volume of the air contacting the adsorbent decreases, the wind speed when contacting the adsorbent decreases accordingly. When the wind speed is lowered, the turbulence of the air flow is reduced, so that the amount of heat exchange between the air and the adsorbent is reduced. Thus, there is a correlation between the amount of air that contacts the adsorbent and the amount of heat exchange between the air and the adsorbent. Moreover, the air volume of the air that contacts the adsorbent is the same as the air volume of the air passing through the filter member (27, 28), and varies depending on the degree of clogging of the filter member (27, 28). Therefore, in the present invention, the clogged state of the filter member (27, 28) is detected based on the detected value of the intake air temperature detecting means (65) and the detected value of the supply air temperature detecting means (66).

  In a fourth aspect based on the third aspect, the filter state detection means (63) is based on the detection value of the intake air temperature detection means (65) and the detection value of the supply air temperature detection means (66). An air volume estimating section (64) for estimating the air volume of the air passing through the filter member (27, 28) is provided, and the air volume estimated by the air volume estimating section (64) and detection in the initial state of the filter member (27, 28) The clogged state of the filter member (27, 28) is detected based on the air volume estimated by the air volume estimating unit (64) at the time.

  In the fourth aspect of the invention, the air temperature change amount before and after contacting the adsorbent is derived from the detected value of the intake air temperature detecting means (65) and the detected value of the supply air temperature detecting means (66). As described above, the amount of air flowing in contact with the adsorbent, that is, the amount of air passing through the filter members (27, 28) is estimated from the amount of air temperature change before and after contacting the adsorbent. Therefore, the clogged state of the filter member (27, 28) is detected from the air volume of the air passing through the filter member (27, 28).

  According to a fifth invention, in the first to fourth inventions, a refrigerant circuit (50) for performing a refrigeration cycle by being connected to an adsorption heat exchanger (51, 52) carrying an adsorbent is provided, and the refrigerant circuit (50 ) Is used to heat or cool the adsorbent of the adsorption heat exchanger (51, 52) to adjust the humidity and temperature of the air in contact with the adsorbent.

  In the fifth invention, when the adsorption heat exchanger (51, 52) is heated by the refrigerant in the refrigerant circuit (50), moisture is desorbed from the adsorbent, and the adsorption heat exchanger (51, 52) is When cooled by the refrigerant 50), the adsorbent adsorbs moisture. Thereby, the air which contacts the heated adsorption heat exchanger (51, 52) is humidified, and the air which contacts the cooled adsorption heat exchanger (51, 52) is dehumidified.

  In the present invention, the clogged state of the filter members (27, 28) affects the air humidity change amount (temperature change amount) before and after contacting the adsorbent. Of the filter member (27, 28) based on the value and the detection value of the supply air humidity detection means (66) (the detection value of the intake air temperature detection means (65) and the detection value of the supply air temperature detection means (66)) A clogging condition is detected. Here, the intake humidity detection means (65) and the supply air humidity detection means (66) (the intake air temperature detection means (65) and the supply air temperature detection means (66)) are in the operating state of the humidity control device (10). Used for control. In the present invention, the intake humidity detection means (65) and the supply air humidity detection means (66) (intake air temperature detection means (65) and the supply air temperature detection means (66) used for controlling the operating state of the humidity control device (10). )) Is also used to detect the clogging of the filter members (27, 28). This eliminates the need for a separate sensor to detect clogging of the filter member (27, 28), so that the condition of the filter member (27, 28) can be reduced without complicating the configuration of the humidity control device (10). Can be detected.

  An embodiment of the present invention will be described. 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.

<Overall configuration of humidity control device>
The said humidity control apparatus (10) is demonstrated referring FIG.1 and FIG.2. Unless otherwise specified, “up”, “down”, “left”, “right”, “front”, “rear”, “front”, and “back” are used for the humidity control device (10) on the front side. It means the direction when seen from.

  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 this casing (11), a front panel (12) is erected on the left front side in FIG. 1, and a rear panel (13) is erected on the right rear side in FIG. The length in the direction is almost equal to the length in the direction from the right front to the left back.

  In the front panel (12) of the casing (11), an exhaust port (21) is opened at a position on the left side, and an air supply port (22) is opened at a position on the right side. In the center of the rear panel (13) of the casing (11), an outside air inlet (23) is opened at an upper position, and an inside air inlet (24) is opened at a lower position.

  The internal space of the casing (11) is partitioned into a space having a relatively small volume on the front panel (12) side and a space having a relatively large volume on the back panel (13) side.

  The space on the front panel (12) side in the casing (11) is partitioned into two left and right spaces. In the left and right spaces, the left space constitutes an exhaust fan chamber (35), and the right space constitutes an air supply fan chamber (36). The exhaust fan chamber (35) communicates with the outdoor space via the exhaust port (21). The exhaust fan chamber (35) accommodates an exhaust fan (25), and the outlet of the exhaust fan (25) is connected to the exhaust port (21). On the other hand, the air supply fan chamber (36) communicates with the indoor space through the air supply port (22). The supply fan chamber (36) accommodates the supply fan (26), and the outlet of the supply fan (26) is connected to the supply port (22). The air supply fan chamber (36) also houses a compressor (53).

  On the other hand, the space on the back panel (13) side in the casing (11) is divided into three front and rear spaces by the first partition plate (16) and the second partition plate (17) erected in the casing (11). It is partitioned. These partition plates (16, 17) extend in the left-right direction of the casing (11). The first partition plate (16) is disposed near the back surface of the casing (11), and the second partition plate (17) is disposed near the front surface of the casing (11).

  In the casing (11), the space behind the first partition plate (16) is partitioned into two upper and lower spaces, the upper space is the outside air flow path (32), and the lower space is the inside air side. Each flow path (34) is configured. The outside air channel (32) communicates with the outdoor space via the outside air inlet (23). The outside air channel (32) is provided with an outside air filter (27), which is a filter member that extends in the left and right direction and divides the channel (32) into the front and rear. The room air channel (34) communicates with the room through the room air inlet (24). The room air side flow path (34) is provided with a room air side filter (28) which is a filter member extending left and right and dividing the flow path (34) into the front and rear.

  On the other hand, the space in front of the second partition plate (17) is partitioned into two upper and lower spaces, the upper space being the exhaust side flow path (31) and the lower space being the air supply side flow path (33). Is configured. The exhaust side flow path (31) communicates with the exhaust fan chamber (35). The supply side flow path (33) communicates with the supply fan chamber (36).

  The space between the first partition plate (16) and the second partition plate (17) is further divided into two left and right spaces by the central partition plate (18). The space on the right side of the central partition plate (18) constitutes the first heat exchanger chamber (37), and the space on the left side constitutes the second heat exchanger chamber (38). The first heat exchanger chamber (37) accommodates the first adsorption heat exchanger (51), and the second heat exchanger chamber (38) accommodates the second adsorption heat exchanger (52). These two adsorption heat exchangers (51, 52) are arranged so as to cross the heat exchanger chambers (37, 38) in which they are accommodated in the left-right direction.

  The first partition plate (16) is provided with four open / close dampers (41 to 44). Specifically, in the first partition plate (16), the first damper (41) is on the upper right side, the second damper (42) is on the upper left side, and the third damper (43) is on the lower left side. The fourth dampers (44) are respectively attached to the lower part of each. When the first damper (41) is opened, the outside air flow path (32) and the first heat exchanger chamber (37) communicate with each other. When the second damper (42) is opened, the outside air flow path (32) and the second heat exchanger chamber (38) communicate with each other. When the third damper (43) is opened, the inside air flow path (34) and the first heat exchanger chamber (37) communicate with each other. When the fourth damper (44) is opened, the inside air flow path (34) and the second heat exchanger chamber (38) communicate with each other.

  The second partition plate (17) is provided with four open / close dampers (45 to 48). Specifically, in the second partition plate (17), the fifth damper (45) is located on the upper right side, the sixth damper (46) is located on the upper left side, and the seventh damper (47) is located on the lower left side. The eighth damper (48) is attached to the lower part of each. When the fifth damper (45) is opened, the exhaust side flow path (31) and the first heat exchanger chamber (37) communicate with each other. When the sixth damper (46) is opened, the exhaust side flow path (31) and the second heat exchanger chamber (38) communicate with each other. When the seventh damper (47) is opened, the air supply side flow path (33) and the first heat exchanger chamber (37) communicate with each other. When the eighth damper (48) is opened, the air supply side flow path (33) and the second heat exchanger chamber (38) communicate with each other.

  In addition, the humidity control device (10) includes an outdoor temperature sensor (65a) and an outdoor air humidity sensor (65b) that measure the temperature and humidity of outdoor air (OA) that the humidity control device (10) takes in from the outside. It is provided on the rear side of the outside air side filter (27) of the outside air channel (32). The outside air temperature sensor (65a) and the outside air humidity sensor (65b) constitute intake air humidity detection means according to the present invention. In addition, an air supply temperature sensor (66a) and an air supply humidity sensor (66b) for measuring the temperature and humidity of the supply air (SA) supplied to the room from the humidity control device (10) are provided on the air supply side channel ( 33). The supply air temperature sensor (66a) and the supply air humidity sensor (66b) constitute supply air humidity detection means according to the present invention. In addition, an indoor air temperature sensor (67a) and an indoor air humidity sensor (67b) for measuring the temperature and humidity of the indoor air (RA) taken in from the room by the humidity control device (10) are the inside air side filters (34). (28) Provided on the rear side. The detection values of these sensors (65, 66, 67) are transmitted to the control unit (60).

<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.

  As shown in FIG. 4, the first adsorption heat exchanger (51) and the second adsorption heat exchanger (52) are both constituted by cross fin type fin-and-tube heat exchangers. 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. Moreover, the heat exchanger tube (58) is provided so that it may penetrate each fin (57).

  In each of the adsorption heat exchangers (51, 52), an adsorbent is supported on the surface of each fin (57), and the air passing between the fins (57) is supported on the fin (57). Contact with. As this adsorbent, those capable of adsorbing water vapor in the air such as zeolite, silica gel, activated carbon, and organic polymer material having a hydrophilic functional group are used.

<Control unit configuration>
The control unit (60) of the humidity control device (10) includes a fan control unit (61) for controlling the air volume of the exhaust fan (25) and the air supply fan (26), and the humidity control of the humidity control device (10). A humidity control unit (62) that controls the state of the refrigeration cycle of the refrigerant circuit (50) to adjust the capacity, and a filter state that is a filter state detection means that detects a clogged state of the outside air filter (27) And a detector (63). The filter state detection unit (63) is provided with an air volume estimation unit (64) for estimating the air volume Q of the air passing through the outside air filter (27).

  The fan control unit (61) is provided with a setting fan tap capable of adjusting the air volume of the supply fan (26) and the exhaust fan (25) in three stages (for example, “large”, “medium”, and “small”). . The fan motor output of the air supply fan (26) and the exhaust fan (25) is determined according to the setting state of the setting fan tap. That is, when the setting fan tap of the fan (26, 27) is in a certain setting state (for example, “large”), the fan motor output is fixed to a predetermined value corresponding to the setting state. Note that the rotational speed of the fan motor may be determined according to the setting state of the setting fan tap.

  Although not shown, the humidity control unit (62) is provided with a humidity input unit for the user to input a desired room humidity and a temperature input unit for the user to input a desired room temperature.

  The humidity input unit is configured so that the desired indoor humidity can be selected from three levels of “low”, “medium”, and “high”. A range of relative humidity corresponding to each of “low”, “medium”, and “high” is preset in the humidity control unit (62). When “low”, “medium”, or “high” is input to the humidity input unit, the humidity control unit (62) sets the range of relative humidity corresponding to the input to the target humidity (for example, 50% to 60%). %). In addition, when a desired room temperature is input to the temperature input unit, the humidity control unit (62) sets the desired room temperature to a target temperature (for example, 25 ° C.).

  Although not shown, the humidity control unit (62) includes a calculation unit. The calculation unit calculates the absolute humidity at the temperature and humidity from the target humidity and the target temperature. The humidity control unit (62) sets the absolute humidity calculated by the calculation unit as the target absolute humidity, and adjusts the humidity control capability of the humidity control device (10) so that the indoor absolute humidity approaches the target absolute humidity.

  The filter state detector (63) estimates the air volume Q of the air passing through the outside air filter (27) by the air volume estimating section (64), and the outside air filter (27) is clogged based on the estimated air volume Q. Detect the state of.

  The air volume estimation unit (64) stores a database function shown in Expression 1 in order to estimate the air volume Q of the air passing through the outside air filter (27).

Formula 1: Xsa = J (Xoa, Q, F) + K
In the above equation 1, Xsa is the absolute humidity of the supply air (SA), Xoa is the absolute humidity of the outdoor air (OA), Q is the air volume of the air passing through the outdoor air filter (27), and F is the compressor (53). The operating frequency, K, represents a correction value considering the pressure loss due to the duct and the characteristics of the indoor space in which the ventilation device (10) is installed. It should be noted that the air volume Q of the air passing through the outside air filter (27) may be considered to substantially match the air volume supplied to the room by the air supply fan (26).

  The database function of the above equation 1 includes the absolute humidity Xsa of the supply air (SA), the absolute humidity Xoa of the outdoor air (OA), the air volume Q of the air passing through the outdoor air filter (27), and the compressor (53). It is expressed as a function of the operating frequency F. The database function of Equation 1 is obtained by creating the database function of Equation 2 when designing the ventilator (10) and determining the value of K when installing the ventilator (10).

Formula 2: Xsa = J (Xoa, Q, F)
In the initial state of the outdoor air filter (27) (stained immediately after installing the ventilator (10) or immediately after cleaning or replacing the outdoor air filter (27)), the database function of Equation 2 is: While changing the air volume of the air supply fan (26), the operating frequency F of the compressor (53), and the state of the outdoor air (OA) taken in from the outside air inlet (23), it blows out from the inside air inlet (24) It is created by measuring the state of the supplied air (SA). At that time, the absolute humidity Xoa of the outdoor air (OA) is calculated from the detected values of the outside air temperature sensor (65a) and the outside air humidity sensor (65b) by the air volume estimation unit (64). The absolute humidity Xsa of the supply air (SA) is calculated by the air volume estimation unit (64) from the detection values of the supply air temperature sensor (66a) and the supply air humidity sensor (66b).

  By the way, when the air volume Q of the air passing through the outside air filter (27) (that is, the air volume contacting the adsorbent of the adsorption heat exchanger (51, 52)) changes, the adsorption heat exchanger (51, 52) is changed. The amount of humidity change in the passing air changes. Specifically, when the air volume Q decreases, the wind speed when contacting the adsorbent decreases accordingly. When the wind speed is reduced, the turbulence of the air flow is also reduced, so that the amount of moisture transferred between the air and the adsorbent, that is, the humidity change amount of the air passing through the adsorption heat exchanger (51, 52) is reduced. Thus, there is a correlation between the air volume Q of the air passing through the outside air filter (27) and the humidity change amount of the air passing through the adsorption heat exchanger (51, 52). Even if the operating frequency of the compressor (53) is changed, the refrigerant evaporation temperature or condensation temperature in the adsorption heat exchanger (51, 52) changes to change the temperature of the air in contact with the adsorbent. The humidity change amount of the air passing through the heat exchanger (51, 52) changes. Therefore, in the database function of Equation 2, the humidity of the air passing through the adsorption heat exchanger (51, 52) with respect to the air volume Q of the air passing through the outside air filter (27) and the operating frequency F of the compressor (53). A database of changes in relationships.

  Moreover, the length and shape of the duct when installing the ventilator (10) vary from installation location to installation location, and the duct pressure loss also varies from installation location to installation location. For this reason, even if the setting fan tap of the air supply fan (26) is in the same setting state, the air volume of the air supply fan (26) varies depending on the installation location. Moreover, in this ventilator (10), the temperature or humidity of the indoor supply air (SA) changes depending on the temperature and humidity of the indoor air (RA) taken from the room. Specifically, when the temperature or humidity of the indoor air (RA) taken in from the room by the ventilator (10) changes, the heat absorption amount of the refrigerant and the water adsorption amount of the adsorbent in the adsorption heat exchanger (51, 52) Since the operating state of the ventilator (10) changes accordingly, the temperature or humidity of the indoor supply air (SA) changes. For this reason, K is determined in consideration of the pressure loss due to the duct and the characteristics of the indoor space in which the ventilation device (10) is installed to eliminate these effects.

  The database function of Formula 2 is the adsorption heat exchanger (51, 52) for the air volume Q of the air passing through the outside air filter (27) and the operating frequency F of the compressor (53) in the installed state of the humidity controller (10). ) Represents the relationship of the amount of change in humidity of the air passing through. According to the database function of Equation 2, the outdoor air (OA) absolute humidity Xoa, the supply air (SA) absolute humidity Xsa and the compressor (53) operating frequency F are passed through the outdoor air filter (27). The air volume Q of the air to be performed can be estimated.

  The air volume estimation unit (64) sets the setting fan tap of the air supply fan (26) to “medium”, for example, and uses the expression 1 to calculate the air volume Q ( Guess 0). At this time, information on the operating frequency F of the compressor (53) is transmitted from the humidity control unit (62) to the air volume estimation unit (64). The estimated air volume Q (0) is stored in the filter state detection unit (63).

  The filter state detection unit (63) estimates the air volume Q of the air passing through the outside air filter (27) by the air volume estimation unit (64) at a predetermined time every day (for example, midnight). The filter state detection unit (63) compares the air volume Q of the air passing through the outside air filter (27) estimated by the air volume estimation unit (64) with the air volume Q (0), and compares the air volume Q (0). Detect clogging. When the outside air filter (27) needs to be replaced, a “filter replacement sign” is displayed. Details of the operation of the filter state detector (63) will be described later.

-Driving action-
The humidity control apparatus (10) of the present embodiment performs a dehumidifying operation or a humidifying operation. During the dehumidifying or humidifying operation, the humidity control device (10) adjusts the humidity of the outdoor air (OA) that has been taken in and supplies it to the room as supply air (SA), and at the same time discharges the taken indoor air (RA). Discharge outside as air (EA).

<Dehumidifying operation>
In the humidity control apparatus (10) during the dehumidifying operation, a first operation and a second operation described later are alternately repeated at a predetermined time interval (for example, every 3 minutes).

  First, the first operation of the dehumidifying operation will be described. As shown in FIG. 5, during the first operation, only the second damper (42), the third damper (43), the fifth damper (45), and the eighth damper (48) are in the open state, and the rest. The dampers (41, 44, 46, 47) are closed. In this state, the air supply fan (26) and the exhaust fan (25) of the humidity control apparatus (10) are operated. When the air supply fan (26) is operated, outdoor air is taken as first air from the outside air inlet (23) into the casing (11). When the exhaust fan (25) is operated, room air is taken as second air from the inside air suction port (24) into the casing (11).

  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 that has flowed into the outside air flow path (32) from the outside air inlet (23) flows into the second heat exchanger chamber (38) through the second damper (42), and then the second heat of adsorption. Pass through the exchanger (52). In the second adsorption heat exchanger (52), moisture in the first air is adsorbed by the adsorbent, and the heat of adsorption generated at that time is absorbed by the refrigerant. The first air dehumidified by the second adsorption heat exchanger (52) flows into the supply side flow path (33) through the eighth damper (48), and is supplied after passing through the supply fan chamber (36). It is supplied into the room through the mouth (22).

  On the other hand, the 2nd air which flowed into the inside air side channel (34) from the inside air suction port (24) flows into the 1st heat exchanger room (37) through the 3rd damper (43), and after that the 1st Passes through the adsorption heat exchanger (51). In the first adsorption heat exchanger (51), moisture is desorbed from the adsorbent heated by the refrigerant, and the desorbed moisture is given to the second air. The second air given moisture in the first adsorption heat exchanger (51) flows into the exhaust side flow path (31) through the fifth damper (45) and exhausts after passing through the exhaust fan chamber (35). It is discharged out of the room through the mouth (21).

  The second operation of the dehumidifying operation will be described. As shown in FIG. 6, during the second operation, only the first damper (41), the fourth damper (44), the sixth damper (46), and the seventh damper (47) are opened, and the rest The dampers (42, 43, 45, 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) 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 flow path (32) from the outside air inlet (23) flows into the first heat exchanger chamber (37) through the first damper (41), and then the first heat of adsorption. Pass through the exchanger (51). In the first adsorption heat exchanger (51), moisture in the first air is adsorbed by the adsorbent, and the adsorption heat generated at that time is absorbed by the refrigerant. The first air dehumidified by the first adsorption heat exchanger (51) flows into the supply side flow path (33) through the seventh damper (47), and is supplied after passing through the supply fan chamber (36). It is supplied into the room through the mouth (22).

  On the other hand, the 2nd air which flowed into the inside air side channel (34) from the inside air suction port (24) flows into the 2nd heat exchanger room (38) through the 4th damper (44), and is 2nd after that. Passes through the adsorption heat exchanger (52). In the second adsorption heat exchanger (52), moisture is desorbed from the adsorbent heated by the refrigerant, and the desorbed moisture is given to the second air. The second air given moisture by the second adsorption heat exchanger (52) flows into the exhaust side flow path (31) through the sixth damper (46), and exhausts after passing through the exhaust fan chamber (35). It is discharged out of the room through the mouth (21).

<Humidification operation>
In the humidity control apparatus (10) during the humidification operation, a first operation and a second operation described later are alternately repeated at a predetermined time interval (for example, every 3 minutes).

  First, the first operation of the humidifying operation will be described. As shown in FIG. 7, during the first operation, only the first damper (41), the fourth damper (44), the sixth damper (46), and the seventh damper (47) are in the open state, and the rest The dampers (42, 43, 45, 48) are closed. In this state, the air supply fan (26) and the exhaust fan (25) of the humidity control apparatus (10) are operated. When the air supply fan (26) is operated, outdoor air is taken as first air from the outside air inlet (23) into the casing (11). When the exhaust fan (25) is operated, room air is taken as second air from the inside air suction port (24) into the casing (11).

  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 dehumidifying operation, the first adsorption heat exchanger (51) serves as a condenser and the second adsorption heat exchanger (52) serves as an evaporator. .

  The 1st air which flowed into the inside air side channel (34) from the inside air suction port (24) flows into the 2nd heat exchanger room (38) through the 4th damper (44), and then the 2nd adsorption heat Pass through the exchanger (52). In the second adsorption heat exchanger (52), moisture in the first air is adsorbed by the adsorbent, and the heat of adsorption generated at that time is absorbed by the refrigerant. The first air deprived of moisture by the second adsorption heat exchanger (52) flows into the exhaust side flow path (31) through the sixth damper (46) and exhausts after passing through the exhaust fan chamber (35). It is discharged out of the room through the mouth (21).

  On the other hand, the second air that has flowed into the outside air flow path (32) from the outside air inlet (23) flows into the first heat exchanger chamber (37) through the first damper (41), and then the first air Passes through the adsorption heat exchanger (51). In the first adsorption heat exchanger (51), moisture is desorbed from the adsorbent heated by the refrigerant, and the desorbed moisture is given to the second air. The second air humidified by the first adsorption heat exchanger (51) flows into the supply side flow path (33) through the seventh damper (47), and is supplied after passing through the supply fan chamber (36). It is supplied into the room through the mouth (22).

  The second operation of the humidifying operation will be described. As shown in FIG. 8, during the second operation, only the second damper (42), the third damper (43), the fifth damper (45), and the eighth damper (48) are in the open state, and the rest. The dampers (41, 44, 46, 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 this refrigerant circuit (50), as in the second operation of the dehumidifying operation, the first adsorption heat exchanger (51) serves as an evaporator and the second adsorption heat exchanger (52) serves as a condenser. .

  The 1st air which flowed into the inside air side channel (34) from the inside air inlet (24) flows into the 1st heat exchanger room (37) through the 3rd damper (43), and after that, the 1st heat of adsorption Pass through the exchanger (51). In the first adsorption heat exchanger (51), moisture in the first air is adsorbed by the adsorbent, and the adsorption heat generated at that time is absorbed by the refrigerant. The first air deprived of moisture by the first adsorption heat exchanger (51) flows into the exhaust side flow path (31) through the fifth damper (45), and exhausts after passing through the exhaust fan chamber (35). It is discharged out of the room through the mouth (21).

  On the other hand, the second air that has flowed into the outside air flow path (32) from the outside air inlet (23) flows into the second heat exchanger chamber (38) through the second damper (42), and then the second air. Passes through the adsorption heat exchanger (52). In the second adsorption heat exchanger (52), moisture is desorbed from the adsorbent heated by the refrigerant, and the desorbed moisture is given to the second air. The second air humidified by the second adsorption heat exchanger (52) flows into the supply side flow path (33) through the eighth damper (48) and passes through the supply fan chamber (36) before being supplied. It is supplied into the room through the mouth (22).

<Operation of control unit>
The operation of the control unit (60) will be described.

  The humidity control unit (62) of the control unit (60) controls the operating frequency of the compressor (53) so that the indoor humidity desired by the user is obtained. The filter state detection unit (63) detects the clogged state of the outside air filter (27) at a predetermined time every day.

  The operation of the humidity control unit (62) will be described. When the user inputs desired room humidity and room temperature, the humidity control unit (62) sets the humidity to the target humidity and sets the temperature to the target temperature. And the humidity control part (62) calculates the absolute humidity in the temperature and humidity from the target temperature and the target humidity in the calculation part, and sets the calculated absolute humidity as the target absolute humidity. In addition, the calculation unit calculates the absolute humidity of the outdoor air (OA) from the detection values of the outside temperature sensor (65a) and the outside air humidity sensor (65b). Further, the calculation unit calculates the absolute humidity of the room air (RA) from the detected values of the room temperature sensor (67a) and the room temperature humidity sensor (67b). Furthermore, the calculation unit calculates the absolute humidity of the supply air (SA) from the detection values of the supply air temperature sensor (66a) and the supply air humidity sensor (66b).

  Based on the absolute humidity of the outdoor air (OA), indoor air (RA) and supply air (SA) and the target absolute humidity, the humidity control unit (62) makes the indoor absolute humidity approach the target absolute humidity. To control the humidity control capacity of the humidity control device (10). The humidity control capacity of the humidity control apparatus (10) is controlled by changing the refrigerant circulation amount by changing the operating frequency of the compressor (63), for example.

  The operation of the filter state detection unit (63) will be described with reference to the flowchart of FIG. When the filter state detector (63) detects the clogged state of the outside air filter (27), the fan controller (61) estimates the air flow Q (0) for the set fan tap of the air supply fan (26). Set to the same state as when

  First, in step ST1, the air volume estimation unit (64) of the filter state detection unit (63) detects the detected values of the outside air temperature sensor (65a) and the outside air humidity sensor (65b), the supply air temperature sensor (66a), and the supply air humidity sensor. The detection value of (66b) is received, and the absolute humidity Xoa of the outdoor air (OA) and the absolute humidity Xsa of the supply air (SA) are calculated. When step ST1 ends, the process proceeds to step ST2.

  In step ST2, the air volume estimation unit (64) receives information on the operating frequency F of the compressor (53) from the humidity control unit (62). Then, the air volume estimation unit (64) uses the above equation 1 based on the absolute humidity Xoa of the outdoor air (OA), the absolute humidity Xsa of the supply air (SA), and the operating frequency F of the compressor (53). The air volume Q of the air passing through the filter (27) is estimated. When step ST2 ends, the process proceeds to step ST3.

  In step ST3, the filter state detection unit (63) compares the estimated air volume Q with the initial air volume Q (0) of the outside air filter (27). Then, when the condition of Expression 3 is satisfied, the filter state detection unit (63) proceeds to step ST4 and displays “filter replacement sign”. L represents a preset constant. When the condition of Equation 3 is not satisfied in step ST3 and when step ST4 is completed, the detection of the clogged state of the outside air filter (27) by the filter state detection unit (63) is completed.

Formula 3: Q ≦ Q (0) × L
The filter state detector (63) detects the clogged state of the outside air filter (27) at a predetermined time every day. When the condition of Expression 3 is satisfied, a “filter replacement sign” is displayed. For example, when L = 0.9, the air volume Q of the air passing through the outside air filter (27) detected by the filter state detector (63) is equal to the air volume Q (0) in the initial state of the outside air filter (27). When it drops to 90% or less, a “filter change sign” is displayed.

-Effect of the embodiment-
In the above embodiment, since the clogged state of the outdoor air filter (27) affects the amount of change in the humidity of the air before and after contacting the adsorbent, the absolute humidity of the outdoor air (OA) and the supply air (SA) Based on the absolute humidity, the clogged state of the outside air filter (27) is detected. The absolute humidity of the outdoor air (OA) is calculated based on the outside air temperature sensor (65a) and the outside air humidity sensor (65b), and the absolute humidity of the supply air (SA) is calculated based on the supply air temperature sensor (66a) and the supply air humidity. Calculated based on sensor (66b). By the way, these temperature or humidity sensors (65, 66) are used for controlling the operating state of the humidity control apparatus (10). In this embodiment, the temperature or humidity sensor (65, 66) used for controlling the operation state of the humidity control device (10) is also used to detect the clogging state of the outside air filter (27). This eliminates the need for a separate sensor to detect clogging of the outside air filter (27), so that the condition of the filter members (27, 28) can be reduced without complicating the configuration of the humidity control device (10). Can be detected.

-Modification 1 of embodiment-
A first modification of the embodiment will be described. In the first modification, the air volume estimation unit (64) estimates the air volume Q of the air passing through the outdoor air filter (27) from the temperature of the outdoor air (OA) and the temperature of the supply air (SA).

  Specifically, the database function shown in Expression 4 is stored in the air volume estimation unit (64). As in the above embodiment, the database function of Equation 4 creates a database function “Tsa = J (Toa, Q, F)” when designing the ventilator (10), and sets the ventilator (10). The value of K is determined when installing.

Formula 4: Tsa = J (Toa, Q, F) + K
In the above equation 4, Tsa is the temperature of the supply air (SA), Toa is the temperature of the outdoor air (OA), Q is the amount of air passing through the outside air filter (27), and F is the operating frequency of the compressor (53). , K respectively represent correction values in consideration of the pressure loss due to the duct and the characteristics of the indoor space in which the humidity control device (10) is installed.

  By the way, when the air volume Q of the air passing through the outside air filter (27) (that is, the air volume contacting the adsorbent of the adsorption heat exchanger (51, 52)) changes, the adsorption heat exchanger (51, 52) is changed. The temperature change amount of the passing air changes. Specifically, when the air volume Q decreases, the wind speed when contacting the adsorbent decreases accordingly. When the wind speed is reduced, the turbulence of the air flow is also reduced, so that the amount of heat exchange between the air and the adsorbent, that is, the temperature change amount of the air passing through the adsorption heat exchanger (51, 52) is reduced. Thus, there is a correlation between the air volume Q of the air passing through the outside air filter (27) and the temperature change amount of the air passing through the adsorption heat exchanger (51, 52). Even if the operating frequency of the compressor (53) is changed, the refrigerant evaporating temperature or condensing temperature in the adsorption heat exchanger (51, 52) changes, so that the air passing through the adsorption heat exchanger (51, 52) The amount of change in temperature changes. Therefore, in the database function of Equation 4, the temperature of the air passing through the adsorption heat exchanger (51, 52) with respect to the air volume Q of the air passing through the outside air filter (27) and the operating frequency F of the compressor (53). A database of changes in relationships.

  According to Equation 4, the air volume Q of the air passing through the outdoor air filter (27) is calculated from the outdoor air (OA) temperature Toa, the supply air (SA) temperature Tsa, and the operating frequency F of the compressor (53). Guessed.

-Modification 2 of embodiment-
A second modification of the embodiment will be described. In the second modification, the air volume estimation unit (64) is not provided, and the eyes of the outdoor air filter (27) are based on the absolute humidity Xoa of the outdoor air (OA) and the absolute humidity Xsa of the supply air (SA). Detect clogging.

  Specifically, in the filter state detection unit (63), the amount of change in the humidity of the air passing through the adsorption heat exchanger (51, 52) in the initial state of the outside air filter (27) is determined by the operation of the compressor (53). The frequency F is stored as a database. This database is created by measuring the supply air (SA) state while changing the operating frequency F of the compressor (53) and the air state of the outdoor air (OA). At that time, the air volume estimation unit (64) calculates the absolute humidity Xoa of the outdoor air (OA) and the absolute humidity Xsa of the supply air (SA) as in the above embodiment.

  If the outside air filter (27) becomes clogged, the air volume of the air supply fan (26) (that is, the air volume passing through the adsorption heat exchanger (51, 52)) will decrease, making it more adsorbed than when creating the database. The humidity change amount of the air passing through the heat exchanger (51, 52) is reduced.

  The filter state detection unit (63) is the difference between the humidity change amount of the air passing through the adsorption heat exchanger (51, 52) at the time of detection and the initial humidity change amount of the outside air filter (27). If it exceeds, “filter exchange sign” is displayed.

<< Other Embodiments >>
You may comprise the said embodiment like the following modifications.

-First modification-
About the said embodiment, the timer which measures the driving | running integration time of the ventilation apparatus (10) after filter replacement | exchange is provided, and when the measurement time of the timer reaches predetermined time, the outside air detected by the filter state detection part (63) Even if the clogged state of the side filter (27) does not reach the point where “filter replacement sign” is displayed, the “filter replacement sign” may be used. This timer is used to cut off the replacement determination of the outside air filter (27).

-Second modification-
About the said embodiment, in the humidity control apparatus (10) by a total heat exchanger, the detected value of an external temperature sensor (65a) and an external air humidity sensor (65b), an air supply temperature sensor (66a), and an air supply humidity sensor (66b) The clogged state of the filter member (27) may be detected based on the detected value.

  In the humidity control device (10) that does not perform ventilation in the above embodiment, the detected values of the room temperature sensor (67a) and room temperature humidity sensor (67b), the supply temperature sensor (66a), and the supply humidity sensor (66b) ), The clogged state of the filter member (27) may be detected. The inside air temperature sensor (67a) and the inside air humidity sensor (67b) constitute intake air humidity detecting means according to the present invention, and the air supply temperature sensor (66a) and the air supply humidity sensor (66b) are air supply according to the present invention. Humidity detection means is configured.

-Third modification-
In the said embodiment, the humidity control apparatus (10) may be comprised as follows. As shown in FIG. 10, the humidity controller (10) of the first modified example 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 adsorption element (111) and the second adsorption element (112) each include an adsorbent such as zeolite and constitute an adsorbing member. 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. 10A, 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. 10B, the humidity control apparatus (10) in the second operation supplies the air heated by the condenser (102) to the second adsorption element (112) and supplies 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.

-Fourth modification-
In the said embodiment, the humidity control apparatus (10) may be comprised as follows. As shown in FIG. 11, the humidity control apparatus (10) of the second modified example 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 carrying an adsorbent such as zeolite on the surface of a so-called heat sink. The suction fins (151 and 152) constitute a suction member. 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. This Peltier element (153) constitutes a heat source means.

  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. Moisture is adsorbed on the adsorbent and dehumidified. 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) Adsorb moisture to the adsorbent of 151) to dehumidify the air. 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.

  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.

It is a perspective view which shows the structure of the humidity control apparatus of embodiment. It is a block diagram of the planar view which shows schematic structure of the humidity control apparatus of embodiment, a right view, and a left view. It is a piping system diagram showing the composition of the refrigerant circuit of an embodiment, (A) shows the operation in the 1st operation, and (B) shows the operation in the 2nd operation. It is a schematic perspective view of an adsorption heat exchanger. It is a schematic block diagram of the humidity control apparatus which shows the flow of the air in 1st operation | movement in a dehumidification driving | operation. It is a schematic block diagram of the humidity control apparatus which shows the flow of the air in 2nd operation | movement in a dehumidification driving | operation. It is a schematic block diagram of the humidity control apparatus which shows the flow of the air in 1st operation | movement in a humidification driving | operation. It is a schematic block diagram of the humidity control apparatus which shows the flow of the air in 2nd operation | movement in a humidification driving | operation. It is a flowchart which shows the flow of operation | movement of the filter state detection part in embodiment. It is a schematic block diagram of the humidity control apparatus in the 3rd modification of other embodiment, Comprising: (A) shows the operation | movement in 1st operation | movement, (B) shows the operation | movement in 2nd operation | movement. It is. It is a schematic perspective view of the humidity control unit in the 4th modification of other embodiments.

Explanation of symbols

10 Humidity control device
27 Outside air filter (filter member)
28 Inside air filter (filter member)
50 Refrigerant circuit
51 First adsorption heat exchanger (Adsorption heat exchanger)
52 Second adsorption heat exchanger (Adsorption heat exchanger)
63 Filter status detector (filter status detector)
64 Airflow estimation unit
65a Outside air humidity sensor (intake air humidity detection means)
65b Outside air temperature sensor (intake humidity detection means)
66a Supply air humidity sensor (Supply air humidity detection means)
66b Supply air temperature sensor (Supply air humidity detection means)

Claims (5)

A filter member (27, 28) for cleaning the taken-in air, and an adsorbent that comes into contact with the air that has passed through the filter member (27, 28). A dampening device,
Intake humidity detection means (65) for measuring the humidity of the air taken in,
Supply air humidity detection means (66) for measuring the humidity of the air supplied to the room,
Filter state detection means (63) for detecting the clogged state of the filter member (27, 28) based on the detection value of the intake air humidity detection means (65) and the detection value of the supply air humidity detection means (66) And a humidity control device. In claim 1,
The filter state detection means (63) is configured to detect the amount of air passing through the filter member (27, 28) based on the detection value of the intake humidity detection means (65) and the detection value of the supply air humidity detection means (66). An air volume estimating section (64) for estimating the air volume is provided, and the air volume estimating section (64) estimates the air volume estimated by the air volume estimating section (64) in the initial state of the filter member (27, 28) and the detection time. A humidity control apparatus that detects a clogged state of the filter member (27, 28) based on an air volume. A filter member (27, 28) for purifying the taken-in air, and an adsorbent that comes into contact with the air that has passed through the filter member (27, 28). A humidity control device for supplying to
Intake air temperature detection means (65) for measuring the temperature of the air taken in;
Supply air temperature detecting means (66) for measuring the temperature of air supplied to the room,
Filter state detection means (63) for detecting the clogging state of the filter member (27, 28) based on the detection value of the intake air temperature detection means (65) and the detection value of the supply air temperature detection means (66) And a humidity control device. In claim 3,
The filter state detection means (63) is configured to detect the amount of air passing through the filter member (27, 28) based on the detection value of the intake air temperature detection means (65) and the detection value of the supply air temperature detection means (66). An air volume estimating section (64) for estimating the air volume is provided, and the air volume estimating section (64) estimates the air volume estimated by the air volume estimating section (64) in the initial state of the filter member (27, 28) and the detection time. A humidity control apparatus that detects a clogged state of the filter member (27, 28) based on an air volume. In any one of Claims 1 thru | or 4,
An adsorption heat exchanger (51, 52) carrying an adsorbent is connected to provide a refrigerant circuit (50) for performing a refrigeration cycle. The refrigerant in the refrigerant circuit (50) uses the refrigerant in the adsorption heat exchanger (51, 52). A humidity control apparatus that adjusts humidity and temperature of air that contacts or adsorbs the adsorbent by heating or cooling the adsorbent.

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