WO2007004559A1

WO2007004559A1 - Humidity control device

Info

Publication number: WO2007004559A1
Application number: PCT/JP2006/313093
Authority: WO
Inventors: Nobuki Matsui; Yoshinori Narikawa; Tomohiro Yabu
Original assignee: Daikin Industries, Ltd.
Priority date: 2005-06-30
Filing date: 2006-06-30
Publication date: 2007-01-11
Also published as: JP2007010231A

Abstract

A humidity control device has a filter status detection means (63) for detecting the status of clogging of filter members (27, 28) based on a detection value of a suction air humidity detection means (65) and a detection value of a supply air humidity detection means (66). The suction air humidity detection means (65) and the supply air humidity detection means (66) are used to control operating conditions of the humidity control device (10), and are also used to detect the status of clogging of the filter members (27, 28).

Description

Humidity control device

Technical field

[0001] The present invention relates to a humidity control apparatus for adjusting indoor humidity.

Background art

Conventionally, there has been known a humidity control apparatus that adjusts indoor humidity by adsorbing or desorbing moisture from an adsorbent.

[0003] For example, Patent Document 1 discloses a humidity control apparatus that adjusts the humidity of the taken outdoor air and supplies it to the room. 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 the moisture desorbed by the adsorbent is given to the air passing through the adsorption heat exchange. Patent Document 1: Japanese Patent Laid-Open No. 2004-294048

Disclosure of the invention

Problems to be solved by the invention

[0004] Incidentally, in the humidity control apparatus as described above, a filter member may be provided in order to clean the taken-in air. Filter members need to be cleaned and replaced as clogging progresses. And it would be convenient if you could let them know when to wash or replace them. 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.

[0005] 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. It is to detect the clogging state of the filter member without complicating the configuration. Means for solving the problem

[0006] The first invention comprises a filter member (27, 28) for purifying the taken-in air, and an adsorbent in contact with the air that has passed through the filter member (27, 28). We assume a humidity control device (10) that adjusts the humidity of the air and supplies it indoors. Then, the intake humidity detection means (65) for measuring the humidity of the intake air, the supply humidity detection means (66) for measuring the humidity of the air supplied to the room, and the detection value of the intake humidity detection means (65). And a filter state detecting means (63) for detecting the clogged state of the filter member (27, 28) based on the detection value of the supply air humidity detecting means (66). .

[0007] In a second aspect based on the first aspect, the filter state detection means (63) uses 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 unit (64) for estimating the air volume of the air passing through the filter member (27, 28) is provided, and the air volume estimating unit (in the initial state of the filter member (27, 28) ( 64) The clogging state of the filter member (27, 28) is detected based on the air volume estimated by 64) and the air volume estimated by the air volume estimation unit (64) at the time of detection.

[0008] A third invention comprises a filter member (27, 28) for purifying the taken-in air, and an adsorbent in contact with the air that has passed through the filter member (27, 28). We assume a humidity control device (10) that adjusts the humidity and temperature of the air and supplies it indoors. Then, the intake air temperature detection means (65) for measuring the temperature of the air taken in, the supply air temperature detection means (66) for measuring the temperature of the air supplied to the room, and the detected value of the intake air temperature detection means (65) And a filter state detecting means (63) for detecting a clogged state of the filter member (27, 28) based on a detection value of the supply air temperature detecting means (66).

[0009] In a fourth aspect based on the third aspect, the filter state detection means (63) uses 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 unit (64) for estimating the air volume of the air passing through the filter member (27, 28) is provided, and the air volume estimating unit (in the initial state of the filter member (27, 28) ( 64) The clogging state of the filter member (27, 28) is detected based on the air volume estimated by 64) and the air volume estimated by the air volume estimation unit (64) at the time of detection.

[0010] According to a fifth invention, in the first to fourth inventions, an adsorption heat exchanger supporting an adsorbent (51 , 52) is connected to perform a refrigeration cycle, and the adsorbent of the adsorption heat exchanger (51, 52) is heated or cooled by the refrigerant of the refrigerant circuit (50) to absorb the adsorption. Adjust the humidity and temperature of the air in contact with the agent.

[0011] One action

In the first invention, the air humidity before the intake humidity detecting means (65) comes into contact with the adsorbent, that is, the air before the humidity is adjusted, is measured and the humidity of the supply air humidity detecting means (66) is adjusted. 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.

[0012] 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 moisture transferred between the adsorbent and the air in contact with the adsorbent, and changes in the humidity of the air before and after contact with the adsorbent. Affect the amount. That is, when the air volume of the air that contacts the adsorbent decreases, the wind speed when contacting the adsorbent decreases accordingly. When the wind speed is reduced, the turbulence of the airflow is also reduced, and the amount of water transferred between the air and the adsorbent is reduced. 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. The air volume in contact with the adsorbent is the same as the air volume 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).

[0013] 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 member (27, 28) is estimated from the amount of change in air humidity before and after contacting the adsorbent. Therefore, the clogging state force of the filter member (27, 28) is detected from the air volume of the air passing through the filter member (27, 28).

[0014] In the third invention, the air before the intake air temperature detecting means (65) contacts the adsorbent, that is, The temperature of the air before the temperature is adjusted is measured, and the temperature of the air after the supply air temperature detecting means (66) is adjusted is measured. From the detected value of the intake air temperature detecting means (65) and the detected value of the air supply temperature detecting means (66), the amount of change in air temperature before and after contacting the adsorbent is derived.

[0015] 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 the amount of air temperature change before and after contacting the adsorbent. give. That is, when the air volume in contact with the adsorbent decreases, the wind speed at the time of contact with the adsorbent decreases accordingly. When the wind speed decreases, the air flow turbulence decreases, and the amount of heat exchange 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 heat exchange between the air and the adsorbent. The air volume in contact with the adsorbent is the same as the air volume 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 air temperature detection means (65) and the detection value of the supply air temperature detection means (66).

[0016] In the fourth aspect of the invention, the detected value of the intake air temperature detecting means (65) and the detected value force of the supply air temperature detecting means (66) are derived from the air temperature change amount before and after contacting the adsorbent. 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) can be estimated from the amount of change in air temperature before and after contacting the adsorbent. Therefore, the clogging state force of the filter member (27, 28) is detected from the air volume of the air passing through the filter member (27, 28).

[0017] 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) becomes the refrigerant. When cooled by the refrigerant in the circuit (50), the adsorbent adsorbs moisture. Thereby, the air that contacts the heated adsorption heat exchanger (51, 52) is humidified, and the air that contacts the cooled adsorption heat exchanger (51, 52) is dehumidified.

The invention's effect

In the present invention, the filter member (27, 28) is clogged before and after contact with the adsorbent. This affects the air humidity change (temperature change) in the air, so the detection value of the intake humidity detection means (65) and the detection value of the supply air humidity detection means (66) (the intake air temperature detection means (65) The clogged state of the filter member (27, 28) is detected based on the detected value and the detected value of the supply air temperature detecting means (66). 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)) operate the humidity control apparatus (10). It is used for state control. In the present invention, 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 (65)) used for controlling the operating state of the humidity control device (10). 66)) is also used to detect clogging of filter members (27, 28). This eliminates the need to provide a separate sensor to detect clogging of the filter member (27, 28), so that the configuration of the humidity control device (10) can be reduced without complicating the configuration of the filter member (27, 28). The state can be detected.

Brief Description of Drawings

FIG. 1 is a perspective view showing a configuration of a humidity control apparatus according to an embodiment.

[Fig. 2] Fig. 2 is a configuration diagram of a schematic configuration of the humidity control apparatus according to the embodiment, viewed in plan, right side, and left side.

FIG. 3 is a piping system diagram showing the configuration of the refrigerant circuit of the embodiment, where (A) shows the operation during the first operation, and (B) shows the operation during the second operation. The operation is shown.

FIG. 4 is a schematic perspective view of an adsorption heat exchanger.

FIG. 5 is a schematic configuration diagram of a humidity control apparatus showing an air flow during the first operation in the dehumidifying operation.

[Fig. 6] Fig. 6 is a schematic configuration diagram of the humidity control apparatus showing the air flow during the second operation in the dehumidifying operation.

[Fig. 7] Fig. 7 is a schematic configuration diagram of the humidity control apparatus showing the air flow during the first operation in the humidifying operation.

FIG. 8 is a schematic configuration diagram of a humidity control apparatus showing an air flow during a second operation in a humidifying operation.

FIG. 9 is a flowchart showing a flow of operation of the filter state detection unit in the embodiment. FIG. 10 is a schematic configuration diagram of a humidity control apparatus according to a third modification of the other embodiment. FIG. 10 (A) shows the operation during the first operation, and FIG. 2 Indicates the operation during operation.

FIG. 11 is a schematic perspective view of a humidity control unit in a fourth modification of the other embodiment.

Explanation of symbols

[0020] 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)

BEST MODE FOR CARRYING OUT THE INVENTION

[0021] An embodiment of the present invention will be described. The humidity control apparatus (10) of the present embodiment performs indoor ventilation as well as indoor humidity adjustment. At the same time, the humidity of the taken outdoor air (OA) is adjusted and supplied to the room. RA) is discharged outside the room.

The humidity control apparatus (10) will be described with reference to FIGS. Unless otherwise specified, “up”, “down”, “left”, “right”, “front”, “rear”, “front”, and “back” used in the description here are the front surfaces of the humidity control device (10). This means the direction when viewed from the side.

[0023] 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) The second adsorption heat exchanger (52), the compressor (53), the four-way switching valve (54), and the electric expansion valve (55) are connected. Details of the refrigerant circuit (50) will be described later.

[0024] 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 toward the left and the right frontal force are almost equal to the length in the direction to the left.

[0025] In the front panel (12) of the casing (11), the exhaust port (21) is opened to the left and the air supply port (22) is opened to the right. At the center of the rear panel (13) of the casing (11), an outside air inlet (24) is opened at a position lower than the outside air inlet (23) force.

[0026] The internal space of the casing (11) is partitioned into a relatively small space on the front panel (12) side! /, A space, and a relatively large space on the back panel (13) side. Yes.

[0027] The space on the front panel (12) side in the casing (11) is cut 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 via 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).

[0028] On the other hand, the space on the back panel (13) side in the casing (11) is separated by the first partition plate (16) and the second partition plate (17) standing up and down in the casing (11). It is divided into two spaces. These partition plates (16, 17) extend in the left-right direction of the casing (11). The first cutting plate (16) is arranged near the back of the casing (11) and the second partition plate (17) is arranged near the front of the casing (11).

[0029] In the casing (11), the space behind the first partition plate (16) is partitioned into two upper and lower spaces, and the upper space defines the outside air flow path (32) and the lower space. Inside air flow path (34) Each is composed. The outside air flow path (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 extending left and right and dividing the channel (32) into the front and rear. The room air side channel (34) communicates with the room through the room air inlet (24). The inside air channel (34) is provided with an inside air filter (28) which is a filter member extending left and right and dividing the channel (34) into the front and rear.

[0030] 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 is the exhaust side flow path (31), and the lower space is 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).

[0031] 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 (18) constitutes the first heat exchange chamber (37), and the space on the left side constitutes the second heat exchange 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 exchanges (51, 52) are arranged so as to traverse the heat exchange chamber (37, 38) in which they are accommodated in the left-right direction!

[0032] The first partition plate (16) is provided with four openable dampers (41 to 44). Specifically, in the first partition plate (16), the first damper (41) is located on the upper right side, the second damper (42) is located on the upper left side, and the third damper (43) is located on the lower left side. A fourth damper (44) is attached to the bottom of each. When the first damper (41) is opened, the outside air flow path (32) and the first heat exchange 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.

[0033] The second partition plate (17) is provided with four openable 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) force is located on the upper left side, and the seventh damper (47) is located on the lower left side. The 8th danba (48) at the bottom of it Each is attached. When the fifth damper (45) is opened, the exhaust side flow path (31) and the first heat exchange chamber (37) communicate with each other. When the sixth damper (46) is opened, the exhaust side flow path (31) and the second heat exchange 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 8th damper (48) is opened, the air supply side flow path (33) and the second heat exchanger chamber (38) communicate with each other.

[0034] Further, the humidity control device (10) includes an outdoor temperature sensor (65a) and an outdoor air humidity sensor (65) for measuring the temperature and humidity of outdoor air (OA) taken in from the outdoor by the humidity control device (10). b) Force Provided on the rear side of the outside air side filter (27) of the outside air side flow path (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, the air supply temperature sensor (66a) and the air supply humidity sensor (66b), which measure the temperature and humidity of the supply air (SA) supplied to the humidity control device (10), are supplied to 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. Also, an indoor air temperature sensor (67a) and an indoor air humidity sensor (67b) that measure the temperature and humidity of the indoor air (RA) taken in from the room by the humidity control device (10) are connected to the inside air flow path (34). It is provided on the rear side of the inside air filter (28). The detection values of these sensors (65, 66, 67) are transmitted to the control unit (60).

The refrigerant circuit (50) will be described with reference to FIG.

[0036] The refrigerant circuit (50) includes a first adsorption heat exchange (51), a second adsorption heat exchange (52), a compressor (53), a four-way switching valve (54), and an electric expansion valve ( 55) is a closed circuit. The refrigerant circuit (50) performs a vapor compression refrigeration cycle by circulating the filled refrigerant.

[0037] In the refrigerant circuit (50), the compressor (53) has a discharge side at the first port of the four-way selector valve (54) and an inlet side at the second port of the four-way selector valve (54). Each port is connected. One end of the first adsorption heat exchange (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).

[0038] The four-way switching valve (54) has a first port and a third port communicating with each other, and the second port and the fourth port. The first state (the state shown in Fig. 3 (A)) in which the first port communicates, and the second state in which the first and fourth ports communicate and the second port and third port communicate (Fig. 3 (B)).

[0039] 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 fins and tubes heat exchangers. Speak. These adsorption heat exchanges (51, 52) include a copper heat transfer tube (58) and an aluminum fin (57)! The plurality of fins (57) provided in the adsorption heat exchange (51, 52) are each formed in a rectangular plate shape and arranged at regular intervals. The heat transfer tube (58) is provided so as to penetrate each fin (57).

[0040] In each of the adsorption heat exchanges (51, 52), an adsorbent is supported on the surface of each fin (57), and air passing between the fins (57) is supported on the fin (57). In contact with the adsorbent formed. As this adsorbent, those capable of adsorbing water vapor in the air, such as zeolite, silica gel, activated carbon, and organic high molecular weight material having a hydrophilic functional group are used.

[0041] <Configuration of control unit>

The controller (60) of the humidity controller (10) includes a fan controller (61) for controlling the air volume of the exhaust fan (25) and the air supply fan (26), and a humidity controller of the humidity controller (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 that is a filter state detecting means for detecting the clogged state of the outside air filter (27) A state detection unit (63). The filter state detection section (63) is provided with an air volume estimation section (64) for estimating the air volume Q of the air passing through the outside air filter (27).

[0042] The fan control unit (61) has a setting fan tap that can adjust the air volume of the supply fan (26) and the exhaust fan (25) in three levels (eg, "large", "medium", and "small"). Is provided. The fan motor output of the supply fan (26) and the exhaust fan (25) is determined by the setting state of the setting fan tap. That is, when the setting fan tap of the fan (26, 27) is in a setting state (for example, “large”), the fan motor output is fixed to a predetermined value corresponding to the setting state. The rotational speed of the fan motor may be determined according to the setting state of the setting fan tap.

[0043] In the humidity control unit (62), although not shown, the humidity at which the user inputs the desired indoor humidity An input unit and a temperature input unit for a user to input a desired room temperature are provided.

[0044] The humidity input unit is configured so that the desired indoor humidity can be selected from three levels of "low", "medium" and "high". In the humidity control unit (62), ranges of relative humidity corresponding to “low”, “medium”, and “high” are preset. When “low”, “medium”, or “high” is input to the humidity input section, the humidity control section (62) sets the relative humidity range corresponding to the input to the target humidity (for example, 50% Set 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).

[0045] Although not shown, the humidity control unit (62) includes a calculation unit. The calculation unit calculates the target humidity and the target temperature force and the absolute humidity at that temperature and humidity. The humidity control section (62) sets the absolute humidity calculated by the calculation section as the target absolute humidity, and adjusts the humidity control capacity of the humidity controller (10) so that the indoor absolute humidity approaches the target absolute humidity. To do.

[0046] 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), and based on the estimated air volume Q, the outside air filter Detect the clogged state (27).

[0047] The air volume estimation unit (64) stores a database function shown in Equation 1 in order to estimate the air volume Q of the air passing through the outside air filter (27).

[0048] Formula l: Xsa = J (Xoa, Q, F) + K

In 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 outside air filter (27), and F is the compressor The operating frequency and K in (53) represent correction values that take into account the pressure loss due to outside and the characteristics of the indoor space where the ventilator (10) is installed. It should be noted that the air volume Q of the air passing through the outside air filter (27) can be considered to be substantially the same as the air volume supplied to the room by the air supply fan (26).

[0049] The database function of Equation 1 above 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 This is expressed as a function of the operating frequency F in (53). The database function of Equation 1 creates the database function of Equation 2 when designing the ventilation device (10) and installs the ventilation device (10). The value of K was determined when

[0050] Equation 2: Xsa = J (Xoa, Q, F)

The database function of Equation 2 shows that the initial state of the outside air filter (27) (stained immediately after the ventilation device (10) is installed or immediately after the outside air filter (27) is cleaned or replaced)状態 state) while changing the air volume of the air supply fan (26), the operating frequency F of the compressor (53), and the state of outdoor air (OA) taken from the outside air inlet (23), Created by measuring the state of the supply air (SA) blown from the mouth (24)! At that time, the absolute humidity Xoa of the outdoor air (OA) is calculated by the air volume estimation unit (64) by calculating the detected value force of the outdoor air temperature sensor (65a) and the outdoor air humidity sensor (65b). The absolute humidity Xsa of the supply air (SA) is calculated from the detection values of the supply air temperature sensor (66a) and supply air humidity sensor (66b) by the air flow estimation unit (64).

[0051] 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) The amount of change in the humidity of the air passing through it changes. Specifically, when the air volume Q 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, that is, the amount of humidity change in the air passing through the adsorption heat exchange (51, 52) decreases. . 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 exchange (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 exchange (51, 52) changes. Therefore, in the database function of equation (2), the amount of 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) is calculated. Create a database of the relationship between changes in humidity.

[0052] Further, the length and shape of the outside of the duct when the ventilation device (10) is installed differ depending on the installation place, and the pressure loss outside the duct varies depending on the installation place. For this reason, even if the setting fan tap of the air supply fan (26) is the same, the air volume of the air supply fan (26) varies depending on the installation location. In addition, in this ventilation device (10), the temperature and humidity of the indoor air (RA) taken in from the room are adjusted. The temperature or humidity of the supply air (SA) to the inside changes. 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 amount of moisture adsorbed by the adsorbent in the adsorption heat exchanger (51, 52). Changes, and the operating condition of the ventilator (10) changes accordingly. Therefore, the temperature or humidity of the indoor supply air (SA) changes. For this reason, K has been determined in consideration of the pressure loss due to the duct and the characteristics of the indoor space where the ventilator (10) is installed to eliminate these effects.

[0053] The database function of Equation 2 is an adsorption heat exchanger for the air volume Q of the air passing through the outside air filter (27) in the installed state of the humidity controller (10) and the operating frequency F of the compressor (53) ( 5 represents the relationship of the amount of change in humidity of the air passing through 1,52). According to the database function of Equation 2, the outdoor air filter (27) is calculated from the absolute humidity Xoa of outdoor air (OA), the absolute humidity Xsa of supply air (SA), and the operating frequency F of the compressor (53). The air volume Q of air passing through

[0054] The air flow estimation unit (64) sets the setting fan tap of the air supply fan (26) to, for example, "medium", and uses Equation 1 to determine the amount of air passing through the outdoor-side filter (27) in the initial state. Estimate air volume Q (0). At this time, information on the operating frequency F of the compressor (53) is transmitted from the humidity control section (62) to the air volume estimation section (64). The estimated air volume Q (0) is stored in the filter state detection unit (63).

[0055] At a predetermined time every day (for example, midnight), 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). 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 above air volume Q (0) and compares the air volume Q (0). Detect clogging. If the outside air filter (27) needs to be replaced, a “filter replacement sign” is displayed. Details of the operation of the filter state detection unit (63) will be described later.

[0056] 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 power supply air (SA), and at the same time exhausts the taken in indoor air (RA). Exhaust outside as air (EA).

[0057] <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).

[0058] First, the first operation of the dehumidifying operation will be described. As shown in Fig. 5, during this first operation, only the second damper (42), the third damper (43), the fifth damper (45), and the eighth damper (48) are open 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 in as the first air into the external air suction port (23) force casing (11). When the exhaust fan (25) is operated, room air is taken as the second air into the inside air inlet (24) force 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 by the compressor (53) is discharged in the order of the first adsorption heat exchange (51), the electric expansion valve (55), and the second adsorption heat exchange (52). The first adsorption heat exchanger (51) becomes a condenser and the second adsorption heat exchanger (52) becomes an evaporator.

[0060] 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 air exchanger (38). 2 Pass through the adsorption heat exchanger (52). In the second adsorption heat exchanger (52), the 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 through the eighth damper (48) into the supply-side flow path (33) and passes through the supply fan chamber (36) before being supplied. It is supplied into the room through the mouth (22).

[0061] On the other hand, the second air that has flowed from the room air inlet (24) into the room air flow path (34) flows into the first heat exchanger chamber (37) through the third damper (43), and then Pass through the first 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, which has been given moisture in the first adsorption heat exchange (51), flows into the exhaust-side flow path (31) through the fifth damper (45), passes through the exhaust fan chamber (35), and then enters the exhaust port. It will be discharged outside through (21).

[0062] The second operation of the dehumidifying operation will be described. As shown in Fig. 6, only the first damper (41), fourth damper (44), sixth damper (46), and seventh damper (47) are open during this second operation. The remaining 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 switching 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 by the compressor (53) is discharged in the order of the second adsorption heat exchange (52), the electric expansion valve (55), and the first adsorption heat exchange (51). The first adsorption heat exchanger (51) becomes an evaporator and the second adsorption heat exchanger (52) becomes a condenser.

[0064] The first air that has flowed from the outside air inlet (23) into the outside air flow path (32) flows into the first heat exchanger chamber (37) through the first damper (41), and then 1 Pass through the adsorption heat 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 through the seventh damper (47) into the supply side flow path (33) and passes through the supply fan chamber (36) before being supplied. It is supplied into the room through the mouth (22).

[0065] On the other hand, the second air that has flowed into the room air side flow path (34) from the room air inlet (24) flows into the second heat exchanger chamber (38) through the fourth damper (44), and then Pass through the second 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, which has been given moisture by the second adsorption heat exchanger (52), flows into the exhaust side flow path (31) through the sixth damper (46) and passes through the exhaust fan chamber (35) before being exhausted. It is discharged out of the room through the mouth (21).

[0066] <Humidification operation>

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

[0067] 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 opened, 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 in as the first air into the external air suction port (23) force casing (11). When the exhaust fan (25) is operated, room air is taken as the second air into the inside air inlet (24) force 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 this refrigerant circuit (50), as in the first operation of the dehumidifying operation, the first adsorption heat exchanger (51) becomes a condenser and the second adsorption heat exchanger (52) becomes an evaporator.

[0069] The first air that has flowed into the room air side flow path (34) from the room air inlet (24) flows into the second heat exchanger chamber (38) through the fourth damper (44), and then 2 Pass through the adsorption heat exchanger (52). In the second adsorption heat exchanger (52), the 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 in the second adsorption heat exchanger (52) flows into the exhaust side flow path (31) through the sixth damper (46) and is exhausted after passing through the exhaust fan chamber (35). It is discharged out of the room through the mouth (21).

[0070] On the other hand, the second air that has flowed from the outside air inlet (23) into the outside air flow path (32) flows into the first heat exchanger chamber (37) through the first damper (41), and then Pass through the first 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 exchange (51) flows through the seventh damper (47) into the supply side flow path (33) and passes through the supply fan chamber (36) before being supplied. It is supplied into the room through the mouth (22).

[0071] 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. The remaining 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 switching 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) becomes an evaporator and the second adsorption heat exchanger (52) becomes a condenser.

[0073] The first air that has flowed into the room air side channel (34) from the room air inlet (24) flows into the first heat exchanger chamber (37) through the third damper (43), and then 1 Pass through the adsorption heat 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 is exhausted after passing through the exhaust fan chamber (35). It is discharged out of the room through the mouth (21).

[0074] 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 Pass through the second 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 through the eighth damper (48) into the supply side flow path (33) and passes through the supply fan chamber (36). It is supplied into the room through the air supply port (22).

[0075] Control Unit Operation>

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

[0076] 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.

[0077] The operation of the humidity control unit (62) will be described. When the user inputs the 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. Then, the humidity control unit (62) calculates the absolute humidity at the temperature and humidity from the target temperature and the target humidity in the calculation unit, and sets the calculated absolute humidity as the target absolute humidity. The computing unit calculates the absolute humidity of the outdoor air (OA) from the detection values of the outdoor temperature sensor (65a) and the outdoor air humidity sensor (65b). Further, the calculation unit calculates the absolute humidity of the room air (RA) from the detected values of the indoor temperature sensor (67a) and the indoor air humidity sensor (67b). Further, 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).

[0078] The humidity control unit (62) determines the absolute humidity of the room based on the absolute humidity of the outdoor air (OA), the indoor air (RA) and the supply air (SA) and the target absolute humidity. The humidity control capacity of the humidity control device (10) is controlled to approach the humidity. The humidity control capacity of the humidity control apparatus (10) is controlled, for example, by changing the refrigerant circulation rate by changing the operating frequency of the compressor (63).

The operation of the filter state detection unit (63) will be described with reference to the flowchart of FIG. When the filter status detector (63) detects the clogged status of the outside air filter (27), The fan control unit (61) sets the setting fan tap of the air supply fan (26) to the same state as when the air volume Q (0) is estimated.

[0080] 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 Air supply humidity The sensor (66b) detection value is received, and the absolute humidity Xoa of outdoor air (OA) and the absolute humidity Xsa of supply air (SA) are calculated. When step ST1 ends, the process proceeds to step ST2.

[0081] In step ST2, information on the operating frequency F of the compressor (53) is received from the air volume estimation unit (64) force humidity control unit (62). Then, the air volume estimation unit (64) uses the above equation 1 from the absolute humidity X oa of outdoor air (OA), the absolute humidity Xsa of supply air (SA), and the operating frequency F of the compressor (53). Estimate the air volume Q of the air passing through the side filter (27). When step ST2 ends, the process proceeds to step ST3.

[0082] In step ST3, the air volume Q estimated by the filter state detection unit (63) is compared with the initial air volume Q (0) of the outside air filter (27). Then, when the condition of Equation 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 at 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.

[0083] ¾: 3: Q≤Q (0) X 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 Equation 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 (( When the value drops to 90% or less of 0), a “filter exchange sign” is displayed.

[0084] Effect of Embodiment

In the above embodiment, since the clogged state of the outdoor air filter (27) affects the amount of change in air humidity 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 condition of the outside air filter (27) has been detected. The absolute humidity of the outdoor air (OA) is the outside temperature sensor (65a) and the outside air humidity. Based on the sensor (65b), the absolute humidity of the supply air (SA) is calculated based on the supply air temperature sensor (66a) and the supply air humidity 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 operating 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 configuration of the humidity control device (10) can be reduced without complicating the configuration of the filter member (27, 28). The state can be detected.

[0085] Modification 1 of Embodiment 1

A first modification of the embodiment will be described. In this modified example 1, the air volume estimation unit (64) estimates the air volume Q of the air passing through the outdoor air filter (27) by the temperature of the outdoor air (OA) and the temperature force of the supply air (SA)! /, The

[0086] Specifically, the database function shown in Equation 4 is stored in the air volume estimation unit (64). As in the above embodiment, the database function of Equation 4 creates the database function “Tsa = J (Toa, Q, F)” when the ventilator (10) is designed, and installs the ventilator (10). The value of K was determined.

[0087] Equation 4: Tsa = J (Toa, Q, F) + K

In Equation 4, Tsa is the temperature of the supply air (SA), Toa is the temperature of the outdoor air (OA), Q is the air volume passing through the outside air filter (27), and F is the operating frequency of the compressor (53) , K represents the correction value considering the pressure loss due to outside and the characteristics of the indoor space where the humidity control device (10) is installed.

[0088] 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) The amount of change in the temperature of the air passing through it 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 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 exchange (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 of the air passing through the adsorption heat exchanger (51, 52). There is. 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 it passes through the adsorption heat exchanger (51,52). Air temperature changes. Therefore, in the database function of Equation 2, the air flow passing through the outdoor air filter (27) and the air passing through the adsorption heat exchange (51, 52) with respect to the air flow rate Q and the operating frequency F of the compressor (53) are calculated. A database of temperature change relationships.

[0089] According to Equation 4, the temperature Toa of the outdoor air (OA), the temperature Tsa of the supply air (SA), the operating frequency F of the compressor (53), and the air passing through the outdoor air filter (27) Air volume Q is estimated.

[0090] Modification 2 of Embodiment 2

A second modification of the embodiment will be described. In this modified example 2, the air volume estimation unit (64) is not provided and is based on the absolute humidity Xoa of the outdoor air (OA) and the absolute humidity Xsa of the supply air (SA). (27) The clogging state is detected.

[0091] Specifically, 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 indicated in the filter state detection unit (63) by the compressor. It is stored as a database for the operating frequency F in (53). 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 this time, the absolute humidity Xoa of the outdoor air (OA) and the absolute humidity Xsa of the supply air (SA) are calculated by the air volume estimation unit (64) as in the above embodiment.

[0092] If the clogging of the outside air filter (27) proceeds, the air volume of the air supply fan (26) (that is, the air volume passing through the adsorption heat exchanger (51, 52)) decreases, so a database is created. Compared to the time, the amount of humidity change in the air passing through the adsorption heat exchanger (51, 52) becomes smaller.

[0093] The filter state detection unit (63) is configured to detect 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). When the value exceeds the set value, the “filter exchange sign” is displayed.

[0094] << Other Embodiments >>

The above embodiment may be configured as in the following modification.

[0095] First Modification In the above embodiment, a timer for measuring the accumulated operation time of the ventilation device (10) after filter replacement is provided, and when the measured time of the timer reaches a predetermined time, it is detected by the filter state detection unit (63). The outside air filter (27) is clogged until it displays “filter change sign”. This timer is used to cut off the replacement determination of the outside air filter (27).

[0096] Second modification

In the humidity control device (10) using the total heat exchanger, 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 (66b) The clogged state of the filter member (27) may be detected based on the detected value of).

[0097] Further, in the above embodiment, the detected values and the supply air temperature of the inside air temperature sensor (67a) and the inside air humidity sensor (67b) in the humidity control device (10) without ventilation. The clogging state of the filter member (27) may be detected based on the detection values of the sensor (66a) and the supply air humidity sensor (66b). 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 supply air temperature sensor (66a) and the supply air humidity sensor (66b) are supplied according to the present invention. Air-humidity detection means is configured.

[0098] Third modification

In the said embodiment, the humidity control apparatus (10) may be comprised as follows. As shown in FIG. 10, the humidity control apparatus (10) of the first 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 a heat source means. The first adsorbing element (111) and the second adsorbing element (112) each include an adsorbent such as zeolite and constitute an adsorbing member. Each adsorbing element (111, 112) is formed with a large number of air passages, and the air contacts the adsorbent when passing through the air passages.

This humidity control apparatus (10) repeats the first operation and the second operation. As shown in FIG. 10 (A), 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. Meanwhile, the air deprived of moisture by the second adsorption element (112) evaporates. Cool with vessel (104). In addition, as shown in FIG. 10 (B), 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. On the other hand, 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 adsorbing elements (111, 112) into the room, and the air humidified when passing through the adsorbing elements (111, 112) in the room. Switching between humidification operation to be supplied to.

[0100] 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, 152). The adsorption fins (151, 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) joined to one surface and a second suction fin (152) joined to the other surface. When direct current is passed through the Peltier element (153), one of the two adsorption 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.

[0101] 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 ( Adsorb moisture to the adsorbent of 152) to dehumidify the air. In addition, the humidity control unit (150) during 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 ( Adsorb moisture to the adsorbent of 151) to dehumidify the air. And this humidity control apparatus (10) was dehumidified by supplying dehumidified air to the room when passing through the humidity control unit (150) and humidified when passing through the humidity control unit (150). Switching between humidification operation to supply air into the room.

[0102] Note that the above embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use.

Industrial applicability

[0103] As described above, the present invention relates to a humidity control apparatus for adjusting indoor humidity. Useful.

Claims

The scope of the claims

[1] 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), and adjusting the humidity of the taken-in air A humidity control device for supplying 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,

Filter state detection means (63) for detecting the clogged state of 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) A humidity control device characterized by the

[2] In claim 1,

The filter state detection means (63) passes through 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). An air volume estimating section (64) for estimating the air volume of the air to be detected, and in the initial state of the filter member (27, 28), the air volume estimated by the air volume estimating section (64) and the air volume estimation A humidity control apparatus that detects a clogged state of the filter member (27, 28) based on the air volume estimated by the section (64).

[3] 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), and adjusting the humidity of the taken-in air A humidity control device that regulates the temperature and supplies it indoors,

Intake air temperature detection means (65) for measuring the temperature of the air taken in;

Supply air temperature detection means (66) for measuring the temperature 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 temperature detection means (65) and the detection value of the supply air temperature detection means (66) A humidity control device characterized by the

[4] In claim 3,

The filter state detection means (63) passes 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 unit (64) for estimating the air volume of the air to be filtered is provided, and the initial filter member (27, 28) is provided. The clogging state of the filter member (27, 28) is detected based on the air volume estimated by the air volume estimating unit (64) and the air volume estimated by the air volume estimating unit (64) at the time of detection. A humidity control device.

[5] In any one of claims 1 to 4,

An adsorption heat exchanger (51, 52) carrying an adsorbent is connected to provide a refrigerant circuit (50) for performing a refrigeration cycle, and the adsorption heat exchanger (51, 52) by the refrigerant in the refrigerant circuit (50). A humidity control apparatus characterized by adjusting the humidity and temperature of the air in contact with the adsorbent by heating or cooling the adsorbent.