JP2009109095A - Humidity conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a humidity conditioner capable of surely stopping even an operation-in-stop in regard to a humidity conditioner in which an operation-in-stop except the humidity conditioning operation is performed in a stop of the normal humidity conditioning operation. <P>SOLUTION: This humidity conditioner (10) includes a first and a second adsorption heat exchangers (51, 52), dampers (41-48, 83, 84) for switching connection and disconnection between heat exchanger chambers (37, 38) inside a casing (11) and air paths (31-34, 37, 38, 81, 82), and a controller (60) for controlling the dampers (41-48, 83, 84) to be opened/closed. The controller (60) selectively performs an action-in-operation such as a normal humidity conditioning operation and an action-in-stop such as a simple ventilation operation, and meanwhile, when the controller receives a forcible stop command, the controller performs a forcible stop operation for forcibly stopping the action-in-operation and the action-in-stop and for fully closing the dampers (41-48, 83, 84). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a humidity control apparatus that supplies outdoor air or indoor air conditioned by an adsorbing member into a room.

  2. Description of the Related Art Conventionally, there is known a humidity control apparatus that supplies dehumidified or humidified outdoor air or indoor air to the room (see, for example, Patent Document 1). The humidity control apparatus of this patent document is configured to adjust the humidity of air by performing an adsorption operation for adsorbing moisture in the air to the adsorption member and a regeneration operation for desorbing moisture from the adsorption member.

  The humidity control apparatus according to Patent Document 1 includes two adsorption member accommodation spaces that respectively accommodate two adsorption members, a plurality of air passages through which outdoor air and indoor air respectively circulate and communicate with the adsorption member accommodation space, An opening / closing mechanism that switches between the communication between the adsorbing member accommodation space and each air passage and the blocking state is provided. Specifically, the plurality of air passages include an indoor air side passage for taking in indoor air, an air supply side passage for supplying air into the room, an outdoor air side passage for taking in outdoor air, and exhausting air to the outside. And an exhaust side passage. Each passage is connected to two adsorption member accommodation spaces, and an opening / closing mechanism is provided between each passage and the two adsorption member accommodation spaces. That is, two opening / closing mechanisms are provided for each passage, and the entire humidity control apparatus is provided with eight opening / closing mechanisms.

  The humidity control apparatus configured as described above controls opening and closing of each of the eight opening / closing mechanisms to switch the flow mode of the indoor air and the outdoor air, adjust the humidity of the outdoor air with the adsorption member, and supply the indoor air to the room. The indoor air is conditioned by the adsorption member and supplied to the room.

  A combination of such a humidity control device and a constant ventilation device is also known. For example, the ventilation system according to Patent Document 2 combines a humidity control device that adjusts outdoor air or indoor air and supplies the humidity to a room, and a continuous ventilation device that performs 24-hour ventilation. In such a ventilation system, the humidity control apparatus operates as necessary, while the constant ventilation apparatus operates constantly and operates even when the humidity control apparatus is stopped.

Thus, even when the operation during operation such as the humidity adjustment operation is stopped, the humidity control apparatus that performs the operation during stop for performing some operation other than the humidity adjustment operation (for example, the above-described ventilation operation) is provided. Are known.
JP 2006-349304 A JP 2005-291559 A

  However, as described above, when the operation during operation is stopped, the humidity control device that performs the operation of circulating outdoor air or room air in the casing (hereinafter also referred to as the operation during stop) other than the humidity control operation Has the following problems.

  In other words, the operation during operation is normally switched between the operation and the stop by the user's ON / OFF operation, while the operation during stop such as the continuous ventilation operation is always performed or while the humidity control device is stopped. Automatically executed. Therefore, even if the user wants to stop the flow of outdoor air or room air in an emergency, etc., even if the user turns off the humidity control device, the operation during operation such as humidity control only stops, and the continuous ventilation operation stops. Medium operation continues.

  The present invention has been made in view of the above points, and the object of the present invention is to provide a humidity control apparatus that performs an operation during stoppage while the operation during operation such as humidity control operation is stopped. An object of the present invention is to provide a humidity control device that can be stopped reliably.

  The first invention includes a casing (11) having an air passage formed therein, and air that is disposed in the casing (11) and flows through the air passage (31 to 34, 37, 38, 81, 82). Humidity control means (50) for adjusting the humidity of the outdoor air, and the humidity of the outdoor air taken into the casing (11) is adjusted by the humidity control means (50) and then supplied to the room. ) Humidity control device that discharges indoor air taken in to outside. An opening / closing mechanism (41-48,83) disposed in the casing (11) for opening / closing a portion of the air passage (31-34,37,38,81,82) that communicates the room with the outside. , 84), the operation during operation in accordance with the operation command input by the user, and after the stop command from the user is input and before the operation command is input from the user While the air passage (31 to 34, 37, 38, 81, 82) in the casing (11) is selectively operated in the stop state in which air is circulated, the operation is performed when a forced stop command is received. It is assumed that the operation and the operation during the stop are forcibly stopped and the open / close mechanism (41 to 48, 83, 84) is closed to perform a forcible stop operation for blocking between the room and the outdoors.

  In the case of the above configuration, the humidity control apparatus performs an operation during operation such as a humidity adjustment operation when receiving an operation command from the user, and performs an operation during stop such as a ventilation operation when receiving a stop command from the user. . When the humidity control apparatus receives a forced stop command from the outside in a state where the operation during operation and the operation during stop are selectively performed in this way, the operation during operation and the operation during stop are forcibly stopped. At the same time, a forcible stop operation is performed to close the opening / closing mechanism (41 to 48, 83, 84) and to shut off the room from the outside. In other words, by configuring the humidity controller to be able to execute the forced stop operation, not only the operation during operation but also the operation during stop can be completely stopped, and the exchange of air inside and outside the room can be stopped. it can. Further, by closing the open / close mechanism (41 to 48, 83, 84) during this forced stop operation, the exchange of air inside and outside the room can be reliably blocked.

  According to a second aspect of the present invention, in the first aspect, the operation during stop is a ventilation operation in which the outdoor air is supplied to the room without adjusting the humidity, and the indoor air is discharged to the outside without adjusting the humidity. To do.

  In the case of the above configuration, when the humidity control apparatus receives a stop command, the operation during operation is stopped, and only the ventilation operation for simply exchanging the outdoor air and the indoor air without adjusting the humidity is executed. When the humidity controller receives a forced stop command, the ventilation operation is stopped and the open / close mechanism (41 to 48, 83, 84) is fully closed. That is, the flow of outdoor air and indoor air in the casing (11) is stopped, and the air passages (31 to 34, 37, 38, 81, 82) are completely blocked, so that air flows from the outside into the room. In addition, the outflow of air from the room to the outside can be prevented.

  In a third aspect based on the first aspect, the humidity control means (50) includes an adsorption member (51, 52) capable of adsorbing moisture in the air and desorbing moisture to the air. In the stopping operation, in order to desorb odorous substances from the adsorbing member (51, 52), moisture in the air taken in is adsorbed to the adsorbing member (51, 52) and the adsorbing member (51 , 52) is a purge operation in which the moisture content of the adsorption member (51, 52) is set to be equal to or greater than the maximum value during the humidity control operation.

  In the case of the above configuration, when the humidity controller receives a normal stop command, the operation during operation is stopped and the purge operation is executed. This purging operation is not intended to supply conditioned air into the room, but for the purpose of removing odorous substances from the adsorbing member (51, 52). In this operation, air is passed through the adsorbing member (51, 52) to adsorb moisture. That is, in the operation during stoppage, while the operation during operation is stopped, the purge operation is performed to remove the odorous substances from the adsorption members (51, 52).

  When the humidity controller receives a forced stop command, the purge operation is stopped and the open / close mechanism (41 to 48, 83, 84) is fully closed. That is, the flow of outdoor air and indoor air in the casing (11) is stopped, and the air passages (31 to 34, 37, 38, 81, 82) are completely blocked, so that air flows from the outside into the room. In addition, the outflow of air from the room to the outside can be prevented.

  According to the present invention, when the humidity control apparatus receives a forced stop command, in addition to the operation during operation, the operation during stop is also stopped, thereby allowing outdoor air and room air to flow in the casing (11). Since the air passage (31-34, 37, 38, 81, 82) is shut off by stopping and opening and closing the open / close mechanism (41-48, 83, 84), in an emergency, etc. While stopping, the operation can be stopped reliably, and the exchange of air inside and outside the room can be surely prevented.

  According to the second invention, in the humidity control apparatus that performs the ventilation operation when the operation during operation is stopped, when the forced stop command is received, the ventilation operation is stopped in addition to the operation during operation. The flow of outdoor air and indoor air in the casing (11) is stopped, and the air passage (31 to 34, 37, 38, 81, 82) is shut off to prevent air exchange indoors and outdoors. can do.

  According to the third invention, in the humidity control apparatus that executes the purge operation when the operation during operation is stopped, when the forced stop command is received, the purge operation is stopped in addition to the operation during operation. 11) Stop the flow of outdoor air and indoor air in the room, and block the air passages (31-34, 37, 38, 81, 82) to prevent air exchange indoors and outdoors. Can do.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  The humidity control device (10) of the present embodiment performs indoor ventilation as well as indoor humidity adjustment. At the same time, the taken outdoor air (OA) is humidity-adjusted and supplied to the room. ) To the outside.

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

  The humidity control device (10) includes a casing (11). A refrigerant circuit (50) is accommodated in the casing (11). Connected to the refrigerant circuit (50) are 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). Has been. Details of the refrigerant circuit (50) will be described later.

  The casing (11) is formed in a rectangular parallelepiped shape that is slightly flat and relatively low in height. In the casing (11) shown in FIG. 1, the left front side (ie, front) is the front panel (12), and the right back side (ie, back) is the back panel (13). Is the first side panel (14), and the left back side is the second side panel (15).

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

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

  The upstream divider plate (71) and the downstream divider plate (72) are parallel to the front panel portion (12) and the rear panel portion (13), and are spaced at a predetermined interval in the longitudinal direction of the casing (11). Has been placed. The upstream divider plate (71) is disposed closer to the rear panel portion (13). The downstream partition plate (72) is disposed closer to the front panel portion (12).

  The first partition plate (74) and the second partition plate (75) are installed in a posture parallel to the first side panel portion (14) and the second side panel portion (15). The first partition plate (74) is spaced a predetermined distance from the first side panel (14) so as to close the space between the upstream partition plate (71) and the downstream partition plate (72) from the right side. Has been placed. The second partition plate (75) is spaced from the second side panel (15) by a predetermined distance so as to close the space between the upstream partition plate (71) and the downstream partition plate (72) from the left side. Has been placed.

  The central partition plate (73) is disposed between the upstream partition plate (71) and the downstream partition plate (72) in a posture orthogonal to the upstream partition plate (71) and the downstream partition plate (72). Yes. The central partition plate (73) is provided from the upstream partition plate (71) to the downstream partition plate (72), and the space between the upstream partition plate (71) and the downstream partition plate (72) is left and right. It is divided into.

  In the casing (11), the space between the upstream partition plate (71) and the back panel (13) is divided into two upper and lower spaces, and the upper space forms the inside air passage (32). The lower space constitutes the outside air passage (34). The room air side passage (32) communicates with the room through a duct connected to the room air inlet (23). An inside air filter (27) and an inside air humidity sensor (96) are installed in the inside air passage (32). The outside air passage (34) communicates with the outdoor space via a duct connected to the outside air inlet (24). An outside air filter (28) and an outside air humidity sensor (97) are installed in the outside air passage (34).

  The space between the upstream divider plate (71) and the downstream divider plate (72) in the casing (11) is divided into left and right by the central divider plate (73), and is located on the right side of the central divider plate (73). The space constitutes the first heat exchanger chamber (37), and the space on the left side of the central partition plate (73) constitutes the second heat exchanger chamber (38). A first adsorption heat exchanger (51) is accommodated in the first heat exchanger chamber (37). The second adsorption heat exchanger (52) is accommodated in the second heat exchanger chamber (38). Moreover, although not shown in figure, the electric expansion valve (55) of a refrigerant circuit (50) is accommodated in the 1st heat exchanger chamber (37). These first and second heat exchanger chambers (37, 38) constitute an air passage.

  Each adsorption heat exchanger (51, 52) has an adsorbent supported on the surface of a so-called cross fin type fin-and-tube heat exchanger, and is a rectangular thick plate or flat rectangular parallelepiped as a whole. It is formed in a shape. Each adsorption heat exchanger (51, 52) is placed in the heat exchanger chamber (37, 38) with its front and back surfaces parallel to the upstream partition plate (71) and downstream partition plate (72). It is erected.

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

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

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

  In the casing (11), the space between the air supply side passage (31) and the exhaust side passage (33) and the front panel portion (12) is divided into left and right by the partition plate (77). The space on the right side of (77) constitutes the air supply fan chamber (36), and the space on the left side of the partition plate (77) constitutes the exhaust fan chamber (35).

  The air supply fan (26) is accommodated in the air supply fan chamber (36). The exhaust fan chamber (35) accommodates an exhaust fan (25). The supply fan (26) and the exhaust fan (25) are both centrifugal multiblade fans (so-called sirocco fans). The air supply fan (26) blows out the air sucked from the downstream side partition plate (72) side to the air supply port (22). The exhaust fan (25) blows out the air sucked from the downstream partition plate (72) side to the exhaust port (21).

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

  In the casing (11), the space between the first partition (74) and the first side panel (14) forms a first bypass passage (81). The starting end of the first bypass passage (81) communicates only with the outside air passage (34) and is blocked from the inside air passage (32). The terminal end of the first bypass passage (81) is partitioned by the partition plate (78) from the air supply side passage (31), the exhaust side passage (33), and the air supply fan chamber (36). A first bypass damper (83) is provided in a portion of the partition plate (78) facing the supply fan chamber (36).

  In the casing (11), the space between the second partition (75) and the second side panel (15) constitutes a second bypass passage (82). The starting end of the second bypass passage (82) communicates only with the inside air passage (32) and is blocked from the outside air passage (34). The terminal end of the second bypass passage (82) is partitioned by the partition plate (79) from the air supply side passage (31), the exhaust side passage (33), and the exhaust fan chamber (35). A second bypass damper (84) is provided in a portion of the partition plate (79) facing the exhaust fan chamber (35).

  These air supply side passage (31), inside air side passage (32), exhaust side passage (33), outside air side passage (34), first bypass passage (81) and second bypass passage (82) constitute an air passage. To do. Further, the first inside air side damper (41), the second inside air side damper (42), the first outside air side damper (43), the second outside air side damper (44), the first air supply side damper (45), the second The air supply side damper (46), the first exhaust side damper (47), the second exhaust side damper (48), the first bypass damper (83) and the second bypass damper (84) constitute an opening / closing mechanism.

  In the right side view and the left side view of FIG. 2, the first bypass passage (81), the second bypass passage (82), the first bypass damper (83), and the second bypass damper (84) are shown. Is omitted.

<Configuration of refrigerant circuit>
As shown in FIG. 3, 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. It is a closed circuit provided with a valve (55). The refrigerant circuit (50) performs a vapor compression refrigeration cycle by circulating the filled refrigerant. This refrigerant circuit (50) constitutes humidity control means.

  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). . In the refrigerant circuit (50), the first adsorption heat exchanger (51), the electric expansion valve (55), and the second adsorption heat exchanger (52) are connected from the third port of the four-way switching valve (54). They are connected in order toward the fourth port.

  The four-way switching valve (54) includes a first state (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. The second port and the fourth port can communicate with each other, and the second port and the third port can communicate with each other in the second state (the state shown in FIG. 3B).

  The compressor (53) is a hermetic compression in which a compression mechanism that compresses refrigerant and an electric motor that drives the compression mechanism are housed in one casing. When the frequency of the alternating current supplied to the electric motor of the compressor (53) (that is, the operating frequency of the compressor (53)) is changed, the rotational speed of the compression mechanism driven by the electric motor changes, and the compressor per unit time The amount of refrigerant discharged from (53) changes. That is, the compressor (53) is configured to have a variable capacity.

  In the refrigerant circuit (50), a high pressure sensor (91) and a discharge pipe temperature sensor (93) are connected to the pipe connecting the discharge side of the compressor (53) and the first port of the four-way switching valve (54). It is attached. The high pressure sensor (91) measures the pressure of the refrigerant discharged from the compressor (53). The discharge pipe temperature sensor (93) measures the temperature of the refrigerant discharged from the compressor (53).

  In the refrigerant circuit (50), a low-pressure pressure sensor (92) and a suction pipe temperature sensor (94) are connected to a pipe connecting the suction side of the compressor (53) and the second port of the four-way switching valve (54). And are attached. The low pressure sensor (92) measures the pressure of the refrigerant sucked into the compressor (53). The suction pipe temperature sensor (94) measures the temperature of the refrigerant sucked into the compressor (53).

  In the refrigerant circuit (50), a pipe temperature sensor (95) is attached to a pipe connecting the third port of the four-way switching valve (54) and the first adsorption heat exchanger (51). The pipe temperature sensor (95) is disposed in the vicinity of the four-way switching valve (54) in this pipe and measures the temperature of the refrigerant flowing in the pipe.

<Configuration of controller>
The humidity control device (10) is provided with a controller (60) as a control unit. Although omitted in FIGS. 1 and 2, an electrical component box is attached to the front panel (12) of the casing (11), and a control board accommodated in the electrical component box controls the controller (60). It is composed.

  The controller (60) receives the measured values of the inside air humidity sensor (96), the inside air temperature sensor, the outside air humidity sensor (97), and the outside air temperature sensor. Moreover, the measured value of each sensor (91, 92, ...) provided in the refrigerant circuit (50) is input to the controller (60). Further, an operation signal output from a remote controller (not shown) or the like operated by the user is input to the controller (60).

  The controller (60) controls the operation of the humidity controller (10) based on these input operation signals and measurement values. Specifically, the controller (60) includes dampers (41 to 48, 83, 84), fans (25, 26), a compressor (53), an electric expansion valve (55), and a four-way switching valve (54). ) Control the operation.

  More specifically, the controller (60) is a normal operation mode in which any one of a dehumidification ventilation operation, a humidification ventilation operation (hereinafter also referred to as a normal humidity adjustment operation), and a simple ventilation operation, which will be described later, is performed by a user's intentional operation. And after the user intentionally performs a stop operation, a stop operation mode in which either a simple ventilation operation or a purge operation (hereinafter also referred to as a stop operation) described later is automatically performed, a dehumidification ventilation operation, There is a forced stop mode in which any of the humidification ventilation operation, simple ventilation operation, and purge operation is not performed, and each mode is switched according to the operation signal.

  Specifically, the controller (60), when an operation signal for performing any one of the dehumidification ventilation operation, the humidification ventilation operation, and the simple ventilation operation, that is, an operation signal (operation command) is input from the remote controller or the like, The mode is changed to an operation corresponding to the operation signal. These dehumidification ventilation operation, humidification ventilation operation, and simple ventilation operation correspond to the operation during operation.

  When an operation signal for stopping the dehumidifying ventilation operation, the humidifying ventilation operation and the simple ventilation operation, that is, a normal stop signal (stop command) is input from the remote controller or the like, the controller (60) The operation mode is entered, and simple ventilation operation or purge operation is executed. The simple ventilation operation in the stop operation mode and the simple ventilation operation in the normal operation mode mean that the stop operation mode performs ventilation with a small air volume, while the normal operation mode has a larger air volume than the stop operation mode. It differs in that it performs ventilation. Which of the simple ventilation operation and the purge operation is executed in the stop operation mode will be described later. These simple ventilation operation and purge operation correspond to operations during stoppage.

  Furthermore, the controller (60) forcibly stops from the normal operation mode or the operation mode at the time of stop when an operation signal for completely stopping all operations from the remote control or the like, that is, a forced stop signal (forced stop command) is input. Transition to mode and stop all operations.

  Each mode will be described below.

-Normal operation mode-
In the normal operation mode, the controller (60) selectively performs any one of the following dehumidification ventilation operation, humidification ventilation operation, and simple ventilation operation in accordance with an operation signal input from the outside.

<Dehumidification ventilation operation>
In the humidity control apparatus (10) during the dehumidification / ventilation operation, a first normal operation and a second normal operation, which will be described later, are alternately repeated at predetermined time intervals (for example, intervals of 3 to 4 minutes). During the dehumidifying ventilation operation, the first bypass damper (83) and the second bypass damper (84) are always closed.

  In the humidity control apparatus (10) during the dehumidification / ventilation operation, outdoor air is taken as first air from the outside air inlet (24) into the casing (11), and indoor air is taken from the inside air inlet (23) to the casing (11). It is taken in as second air.

  First, the first normal operation of the dehumidifying ventilation operation will be described. As shown in FIG. 4, during the first normal operation, the first inside air damper (41), the first outside air damper (43), the second air supply damper (46), and the first exhaust damper are provided. (47) is in the open state, and the second inside air damper (42), the first outside air damper (43), the first air supply side damper (45), and the second exhaust side damper (48) are in the closed state. . In the refrigerant circuit (50) during the first normal operation, the four-way switching valve (54) is set to the first state (the state shown in FIG. 3A), and the first adsorption heat exchanger (51) is The second adsorption heat exchanger (52) serves as a condenser and serves as an evaporator.

  The first air that has flowed into the outside air passage (34) and passed through the outside air filter (28) flows into the second heat exchanger chamber (38) through the second outside air damper (44), and thereafter It passes through the second adsorption heat 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 air passage (31) through the second supply air damper (46) and passes through the supply air fan chamber (36). Later, the air is supplied into the room through the air supply port (22).

  On the other hand, the second air that has flowed into the room air passage (32) and passed through the room air filter (27) flows into the first heat exchanger chamber (37) through the first room air damper (41), Thereafter, it passes 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 given moisture in the first adsorption heat exchanger (51) flows into the exhaust side passage (33) through the first exhaust side damper (47) and passes through the exhaust fan chamber (35). It is discharged outside through the exhaust port (21).

  Next, the second normal operation of the dehumidifying ventilation operation will be described. As shown in FIG. 5, during the second normal operation, the second inside air side damper (42), the first outside air side damper (43), the first air supply side damper (45), and the second exhaust side damper are provided. (48) is in the open state, and the first inside air damper (41), the second outside air damper (44), the second air supply side damper (46), and the first exhaust side damper (47) are in the closed state. . In the refrigerant circuit (50) during the second normal operation, the four-way switching valve (54) is set to the second state (the state shown in FIG. 3B), and the first adsorption heat exchanger (51) is The second adsorption heat exchanger (52) becomes an evaporator and becomes a condenser.

  The first air that has flowed into the outside air passage (34) and passed through the outside air filter (28) flows into the first heat exchanger chamber (37) through the first outside air damper (43), and thereafter Passes through the first 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 into the supply air passage (31) through the first supply air damper (45) and passes through the supply air fan chamber (36). Later, the air is supplied into the room through the air supply port (22).

  On the other hand, the second air that has flowed into the room air passage (32) and passed through the room air filter (27) flows into the second heat exchanger chamber (38) through the second room air damper (42), Thereafter, it passes 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 given moisture in the second adsorption heat exchanger (52) flows into the exhaust side passage (33) through the second exhaust side damper (48) and passes through the exhaust fan chamber (35). It is discharged outside through the exhaust port (21).

<Humidified ventilation operation>
In the humidity control apparatus (10) during the humidification ventilation operation, a first normal operation and a second normal operation, which will be described later, are alternately repeated at predetermined time intervals (for example, intervals of 3 to 4 minutes). During the humidification ventilation operation, the first bypass damper (83) and the second bypass damper (84) are always closed.

  In the humidity control apparatus (10) during the humidification ventilation operation, outdoor air is taken as second air from the outside air inlet (24) into the casing (11), and indoor air is taken from the inside air inlet (23) to the casing (11). It is taken in as 1st air in.

  First, the first normal operation of the humidified ventilation operation will be described. As shown in FIG. 6, during the first normal operation, the second inside air side damper (42), the first outside air side damper (43), the first air supply side damper (45), and the second exhaust side damper are provided. (48) is in the open state, and the first inside air damper (41), the second outside air damper (44), the second air supply side damper (46), and the first exhaust side damper (47) are in the closed state. . In the refrigerant circuit (50) during the first normal operation, the four-way switching valve (54) is set to the first state (the state shown in FIG. 3A), and the first adsorption heat exchanger (51) is The second adsorption heat exchanger (52) serves as a condenser and serves as an evaporator.

  The first air that has flowed into the room air passage (32) and passed through the room air filter (27) flows into the second heat exchanger chamber (38) through the second room air damper (42), and then It passes through the second adsorption heat 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 in the second adsorption heat exchanger (52) flows into the exhaust side passage (33) through the second exhaust side damper (48) and passes through the exhaust fan chamber (35). It is discharged outside through the exhaust port (21).

  On the other hand, the second air that flows into the outside air passage (34) and passes through the outside air filter (28) flows into the first heat exchanger chamber (37) through the first outside air damper (43), Thereafter, it passes 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 exchanger (51) flows through the first air supply damper (45) into the air supply passage (31) and passes through the air supply fan chamber (36). Later, the air is supplied into the room through the air supply port (22).

  Next, the second normal operation of the humidified ventilation operation will be described. As shown in FIG. 7, during the second normal operation, the first inside air side damper (41), the second outside air side damper (44), the second air supply side damper (46), and the first exhaust side damper are provided. (47) is in the open state, and the second inside air damper (42), the first outside air damper (43), the first air supply side damper (45), and the second exhaust side damper (48) are in the closed state. . In the refrigerant circuit (50) during the second normal operation, the four-way switching valve (54) is set to the second state (the state shown in FIG. 3B), and the first adsorption heat exchanger (51) is The second adsorption heat exchanger (52) becomes an evaporator and becomes a condenser.

  The first air that has flowed into the room air passage (32) and passed through the room air filter (27) flows into the first heat exchanger chamber (37) through the first room air damper (41), and then Passes through the first adsorption heat exchanger (51). In the first adsorption heat exchanger (51), 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 passage (33) through the first exhaust side damper (47) and passes through the exhaust fan chamber (35). It is discharged outside through the exhaust port (21).

  On the other hand, the second air that has flowed into the outside air passage (34) and passed through the outside air filter (28) flows into the second heat exchanger chamber (38) through the second outside air damper (44), Thereafter, it passes 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 second supply air damper (46) into the supply air passage (31) and passes through the supply air fan chamber (36). Later, the air is supplied into the room through the air supply port (22).

<Simple ventilation operation>
During the simple ventilation operation, the humidity control device (10) supplies the outdoor air (OA) taken into the room as supplied air (SA) as it is, and at the same time, takes the indoor air (RA) taken as it is into the outdoor air (EA). To discharge. Here, the operation of the humidity control apparatus (10) during the simple ventilation operation will be described with reference to FIG.

  In the humidity control apparatus (10) during the simple ventilation operation, the first bypass damper (83) and the second bypass damper (84) are opened, and the first room air damper (41) and the second room air damper ( 42), a first external air damper (43), a second external air damper (44), a first air supply damper (45), a second air supply damper (46), a first exhaust air damper (47), And the 2nd exhaust side damper (48) will be in a closed state. Further, during the simple ventilation operation, the compressor (53) of the refrigerant circuit (50) is stopped.

  In the humidity control apparatus (10) during the simple ventilation operation, outdoor air is taken into the casing (11) from the outside air inlet (24). The outdoor air that has flowed into the outside air passage (34) through the outside air inlet (24) flows from the first bypass passage (81) through the first bypass damper (83) into the supply fan chamber (36). Then, the air is supplied into the room through the air supply port (22).

  Further, in the humidity control apparatus (10) during the simple ventilation operation, room air is taken into the casing (11) from the inside air suction port (23). The room air that has flowed into the inside air passage (32) through the inside air inlet (23) flows from the second bypass passage (82) through the second bypass damper (84) into the exhaust fan chamber (35). Then, it is discharged to the outside through the exhaust port (21).

  This simple ventilation operation is performed with a larger air volume during the normal operation mode than during the stop mode. In addition, you may comprise so that an air volume can be controlled by a user's operation.

-Stop mode-
In the stop operation mode, the controller (60) basically receives an external stop signal for stopping any one of the dehumidification ventilation operation, the humidification ventilation operation, and the simple ventilation operation in the normal operation mode. Performs the simple ventilation operation. However, when a predetermined condition described later is satisfied when the normal stop signal is input, the following purge operation is performed.

  Note that the simple ventilation operation during the stop-time operation mode is performed with a smaller amount of air than that in the normal operation mode.

<Purge operation>
The controller (60) integrates the operation time of the dehumidification ventilation operation and the humidification ventilation operation, and when the integrated value of the operation time reaches a predetermined reference value, causes the humidity control device (10) to execute the purge operation. Specifically, the controller (60) executes the purge operation when a normal stop signal is input from a remote controller or the like and the integrated value of the operation time of the normal humidity control operation exceeds 12 hours at that time. Moreover, the humidity control apparatus (10) is always operated, and a normal stop signal may not be input from a remote controller or the like. In such a case, when the integrated value of the operation time of the normal operation exceeds 120 hours, the controller (60) shifts from the normal operation mode to the stop operation mode and forcibly performs the purge operation to the humidity controller (10). To run. In this case, the normal operation mode is restored after the purge operation.

  In the humidity control apparatus (10) during the purge operation, a first purge operation and a second purge operation described later are performed once each. The purge operation time tp, which is the duration of the first purge operation and the second purge operation, is set to a value longer than the duration of the first normal operation and the second normal operation (3 to 4 minutes in this embodiment). .

  In the humidity control apparatus (10) during the purge operation, the first outside air damper (43), the second outside air damper (44), the first exhaust side damper (47), and the second exhaust side damper (48) are opened. A first air damper (41), a second air damper (42), a first air damper (45), a second air damper (46), a first bypass damper (83), And the 2nd bypass damper (84) will be in a closed state. In the humidity control apparatus (10) during the purge operation, only the exhaust fan (25) is operated, and the air supply fan (26) remains stopped.

  During the purge operation, a part of the outdoor air that has flowed into the outside air passage (34) flows into the first heat exchanger chamber (37) through the first outside air damper (43), and the rest is the second. It flows into the second heat exchanger chamber (38) through the outside air damper (44). The air that has flowed into the first heat exchanger chamber (37) passes through the first adsorption heat exchanger (51), and then flows into the exhaust side passage (33) through the first exhaust side damper (47). The air that has flowed into the second heat exchanger chamber (38) passes through the second adsorption heat exchanger (52) and then flows into the exhaust side passage (33) through the second exhaust side damper (48). The air flowing into the exhaust side passage (33) flows into the exhaust fan chamber (35), and is discharged to the outside through the exhaust port (21).

  First, the first purge operation will be described. In the refrigerant circuit (50) during the first purge operation, the four-way switching valve (54) is set to the first state (the state shown in FIG. 3A), and the first adsorption heat exchanger (51) is connected to the condenser. Thus, the second adsorption heat exchanger (52) becomes an evaporator. In the first adsorption heat exchanger (51), the refrigerant radiates heat to the outdoor air and condenses. In the second adsorption heat exchanger (52), moisture in the outdoor air is adsorbed by the adsorbent, and the adsorption heat generated at that time is absorbed to evaporate the refrigerant.

  During the first purge operation, the capacity of the compressor (53) is adjusted such that the evaporation temperature of the refrigerant in the second adsorption heat exchanger (52) becomes the dew point temperature of the outdoor air, and the second adsorption heat exchanger (52 The degree of opening of the electric expansion valve (55) is adjusted so that the degree of superheat of the refrigerant that has flowed out from () reaches a predetermined target value. The controller (60) controls the capacity of the compressor (53) and the opening of the electric expansion valve (55). Detailed control operation of the controller (60) will be described later.

  As described above, during the first purge operation, moisture in the air is adsorbed by the second adsorption heat exchanger (52). Then, immediately before the end of the first purge operation, the moisture content of the second adsorption heat exchanger (52) (that is, the amount of moisture adsorbed by the adsorption heat exchanger with respect to the amount of moisture that can be adsorbed by the adsorption heat exchanger) Ratio) is 90% or more. In the dehumidifying ventilation operation and the humidifying ventilation operation, the moisture content of the second adsorption heat exchanger (52) immediately before the end of the first normal operation is about 70%. Therefore, the water content of the second adsorption heat exchanger (52) immediately before the end of the first purge operation is greater than the water content of the second adsorption heat exchanger (52) immediately before the end of the first normal operation.

Here, since the humidity control apparatus (10) is for adjusting the humidity of the air, an adsorbent having a high ability to adsorb water (H ₂ O) is used there. Further, since the amount of water vapor present in the air is very large compared to the amount of odorous substances, the partial pressure of water vapor in the air is very high compared to the partial pressure of odorous substances. Therefore, the adsorption power of the adsorption heat exchanger (51, 52) with respect to the adsorbent is higher in water than in odor substances.

  For this reason, when the water content of the second adsorption heat exchanger (52) is increased by the first purge operation, water vapor having a strong adsorption power to the adsorbent is preferentially adsorbed by the adsorbent and has been adsorbed by the adsorbent until then. Odorous substances such as ammonia are desorbed from the adsorbent. The odor substance desorbed from the second adsorption heat exchanger (52) flows together with the outdoor air passing through the second adsorption heat exchanger (52) and is discharged to the outside.

  Next, the second purge operation will be described. In the refrigerant circuit (50) during the second purge operation, the four-way switching valve (54) is set to the second state (the state shown in FIG. 3B), and the second adsorption heat exchanger (52) is connected to the condenser. Thus, the first adsorption heat exchanger (51) becomes an evaporator. In the second adsorption heat exchanger (52), the refrigerant dissipates heat to the outdoor air and condenses. In the first adsorption heat exchanger (51), moisture in the outdoor air is adsorbed by the adsorbent, and the adsorption heat generated at that time is absorbed to evaporate the refrigerant.

  During the second purge operation, the capacity of the compressor (53) is adjusted such that the evaporation temperature of the refrigerant in the first adsorption heat exchanger (51) becomes the dew point temperature of the outdoor air, and the first adsorption heat exchanger (51 The degree of opening of the electric expansion valve (55) is adjusted so that the degree of superheat of the refrigerant that has flowed out from () reaches a predetermined target value. The controller (60) controls the capacity of the compressor (53) and the opening of the electric expansion valve (55). Detailed control operation of the controller (60) will be described later.

  Thus, during the second purge operation, moisture in the air is adsorbed by the first adsorption heat exchanger (51). And just before the end of the second purge operation, the moisture content of the first adsorption heat exchanger (51) becomes 90% or more. In the dehumidifying ventilation operation and the humidifying ventilation operation, the moisture content of the first adsorption heat exchanger (51) immediately before the end of the second normal operation is about 70%. Accordingly, the water content of the first adsorption heat exchanger (51) immediately before the end of the second purge operation is larger than the water content of the first adsorption heat exchanger (51) immediately before the end of the first normal operation.

  As described above, the adsorption power of the adsorption heat exchanger (51, 52) with respect to the adsorbent is higher in water than in odor substances. For this reason, when the moisture content of the first adsorption heat exchanger (51) is increased by the second purge operation, water vapor having a strong adsorption power to the adsorbent is preferentially adsorbed by the adsorbent, and has been adsorbed by the adsorbent until then. Odorous substances such as ammonia are desorbed from the adsorbent. The odor substance desorbed from the first adsorption heat exchanger (51) flows together with the outdoor air passing through the first adsorption heat exchanger (51) and is discharged to the outside.

  The control operation performed by the controller (60) during the purge operation will be described below with reference to the flowchart of FIG.

  When the conditions for performing the purge operation are satisfied, the controller (60), in step ST10, the first outside air damper (43), the second outside air damper (44), and the first exhaust side damper (47) And the second exhaust side damper (48) is opened and the remaining dampers are kept closed. In subsequent step ST11, the controller (60) activates the exhaust fan (25). At that time, the air supply fan (26) remains stopped.

  In Step ST12, the controller (60) sets a purge operation time tp that is a duration time of the first purge operation and the second purge operation. At that time, the controller (60) adjusts the purge operation time tp in accordance with the absolute humidity of the outdoor air. Specifically, the controller (60) calculates the absolute humidity of the outdoor air using the temperature of the outdoor air measured by the outdoor air temperature sensor and the relative humidity of the outdoor air measured by the outdoor air humidity sensor (97). The controller (60) sets the value of the purge operation time tp within a range of 10 minutes to 50 minutes so that the purge operation time tp becomes longer as the absolute humidity of the outdoor air becomes lower. The purge operation time tp is such that the moisture content of the adsorption heat exchanger (51, 52) after the purge operation is over the maximum value of the moisture content of the adsorption heat exchanger (51, 52) during normal humidity control operation. Is set to be

  Thereafter, the controller (60) starts the compressor (53) in step ST13. Here, the description will be made assuming that the four-way switching valve (54) is in the first state (the state shown in FIG. 3 (A)) when the compressor (53) is started. In that case, the first purge operation is disclosed from the time when the compressor (53) is started. In subsequent step ST14, the controller (60) performs capacity control of the compressor (53) and opening degree control of the electric expansion valve (55). The controller (60) continuously performs the capacity control of the compressor (53) and the opening degree control of the electric expansion valve (55) until step ST18 described later.

  Specifically, in step ST14, the controller (60) compresses the refrigerant so that the evaporation temperature Te of the refrigerant in the second adsorption heat exchanger (52) serving as the evaporator becomes equal to the dew point temperature Todew of the outdoor air. Adjust the operating frequency of the machine (53). At that time, the controller (60) calculates the evaporation temperature Te using the measured value of the low pressure sensor (92), and uses the measured value of the outdoor temperature sensor and the measured value of the outdoor air humidity sensor (97) for outdoor air. Calculate the dew point temperature. The controller (60) increases the operating frequency of the compressor (53) if the evaporation temperature Te is higher than the dew point temperature Todew, and increases the operating frequency of the compressor (53) if the evaporation temperature Te is lower than the dew point temperature Todew. Pull down.

  In step ST14, the controller (60) is electrically operated so that the degree of superheat of the refrigerant flowing out from the second adsorption heat exchanger (52) serving as an evaporator becomes a predetermined target value (eg, 3 ° C.). Adjust the opening of the expansion valve (55). At that time, the controller (60) calculates the suction refrigerant pressure of the compressor (53) measured by the low pressure sensor (92) and the suction refrigerant temperature of the compressor (53) measured by the suction pipe temperature sensor (94). Use to calculate the superheat degree SH of the refrigerant. The controller (60) increases the opening degree of the electric expansion valve (55) if the calculated refrigerant superheat degree SH is higher than the target value, and if the calculated refrigerant superheat degree SH is lower than the target value, the electric expansion is performed. Reduce the opening of the valve (55).

  In the subsequent step ST15, the controller (60) determines the duration of the first purge operation (that is, the elapsed time since the start of the compressor (53) in step ST13) and the purge operation time tp set in step ST12. Compare When the duration time of the first purge operation has not reached the purge operation time tp, the controller (60) waits as it is and continues the first purge operation. On the other hand, when the duration time of the first purge operation has reached the purge operation time tp, the controller (60) moves to step ST16 and changes the four-way switching valve (54) from the first state to the second state (FIG. 3 (B Switch to the state shown in). That is, the controller (60) ends the first purge operation and starts the second purge operation.

  As described above, the controller (60) continues to control the compressor (53) and the electric expansion valve (55) even after the start of the second purge operation. That is, the controller (60) operates the compressor (53) so that the evaporation temperature Te of the refrigerant in the first adsorption heat exchanger (51) serving as the evaporator becomes equal to the dew point temperature Todew of the outdoor air. Adjust the frequency. Further, the controller (60) adjusts the opening degree of the electric expansion valve (55) so that the superheat degree of the refrigerant flowing out from the first adsorption heat exchanger (51) serving as an evaporator becomes a predetermined target value. Adjust.

  In subsequent step ST17, the controller (60) determines the duration of the second purge operation (that is, the elapsed time from when the four-way selector valve (54) was switched in step ST16) and the purge operation time tp set in step ST12. And compare. When the duration time of the second purge operation has not reached the purge operation time tp, the controller (60) waits as it is and continues the second purge operation. On the other hand, when the duration time of the second purge operation has reached the purge operation time tp, the controller (60) moves to step ST18 and stops the compressor (53).

  In the next step ST19, the controller (60) stops the exhaust fan (25). Further, in the next step ST20, the controller (60) includes the first outside air damper (43), the second outside air damper (44), the first exhaust side damper (47), and the second exhaust side damper (48). ) (That is, the damper opened in step ST10) is closed.

  Then, the controller (60) ends the purge operation. At that time, in the controller (60), the operation time of the dehumidification ventilation operation and the humidification ventilation operation accumulated so far is reset to zero.

  Here, when the normal stop signal is input from the remote controller or the like and the controller (60) is performing the purge operation because the integrated value of the operation time of the normal humidity control operation exceeds 12 hours at that time After the purge operation, the simple ventilation operation in the stop operation mode is executed. On the other hand, the controller (60) shifts to the normal operation mode after completion of the purge operation when the accumulated value of the operation time of the normal operation exceeds 120 hours, and then the operation before the purge operation is performed. Execute.

  The controller (60) performs a purge operation as a test operation immediately after the humidity control device (10) is installed. The environment where the humidity control device (10) is stored before installation varies, and during storage, odorous substances enter the casing (11) of the humidity control device (10) and the adsorption heat exchanger (51, 52). Therefore, immediately after the installation of the humidity control device (10), the humidity control device (10) is purged so that the adsorption heat exchanger (51, 52) is in a state in which no odorous substances are adsorbed. This prevents odorous substances from entering the room during dehumidification ventilation operation and humidification ventilation operation.

-Forced stop mode-
When the controller (60) receives a forced stop command, it performs the following forced stop operation. Here, the forced stop signal may be input by a remote control operation from the user, or may be transmitted from an external device in an emergency.

  Specifically, in the forced stop mode, all of the dehumidification ventilation operation, the humidification ventilation operation, the simple ventilation operation, and the purge operation are stopped.

  That is, before entering the forced stop mode, the operation mode is the normal operation mode or the stop operation mode, and the humidity controller (10) is one of the dehumidification ventilation operation, the humidification ventilation operation, the simple ventilation operation, and the purge operation. I am driving. In this state, when the forced stop signal is input, the controller (60) stops the running operation. By doing so, air circulation in the casing (11) is stopped.

  In addition to stopping the operation, the controller (60) fully closes each damper (41 to 48, 83, 84). By doing so, the air supply side passage (31), the inside air side passage (32), the exhaust side passage (33), the outside air side passage (34), the first heat exchanger chamber (37), and the second heat exchanger chamber. (38) is cut off, and the first bypass passage (81) and the second bypass passage (82) are cut off from the exhaust fan chamber (35) and the air supply fan chamber (36).

  As described above, in the forced stop mode, the air flow in the casing (11) is stopped and the communication state of each passage (31 to 34, 81, 82) is shut off. ) And indoor air are prevented from being discharged to the outside through the humidity control device (10).

-Effect of the embodiment-
Therefore, according to the present embodiment, in the humidity control device (10) that performs the stop-time operation such as the simple ventilation operation or the purge operation when the operation during the operation such as the dehumidification ventilation operation or the humidification ventilation operation is stopped, When the stop signal is input, not only the operation during operation but also the operation at the time of stop is stopped, so that the exhaust port (21), the air supply port (22), the inside air suction port (23) and the outside air of the casing (11) Since it is possible to stop the inflow and outflow of air through the suction port (24), it is possible to prevent air from being exchanged indoors and outdoors through the humidity control device (10). In addition, when the forced stop signal is input, the humidity control device (10) makes each of the passages (31 to 34, 81, etc.) by fully closing each damper (41 to 48, 83, 84). 82) By shutting off the communication state of the casing (11) from the exhaust port (21), the air supply port (22), the internal air intake port (23), or the external air intake port (24) due to the air flow inside or outside the room. Even if air tries to flow into the casing (11) (or even if it flows), each passage (31 to 34, 81, 82) is blocked by each damper (41 to 48, 83, 84). The air can be prevented from flowing through the casing (11).

  In this way, by providing a forced stop mode in the humidity control device (10) that performs operation at the time of stoppage, the air flow indoors and outdoors can be stopped in an emergency where it is desired to completely stop the air exchange indoors and outdoors. The communication can be reliably blocked.

-Modification 1 of embodiment-
In the refrigerant circuit (50) of the present embodiment, a supercritical cycle in which the high pressure of the refrigeration cycle is set to a value higher than the critical pressure of the refrigerant may be performed. In that case, one of the first adsorption heat exchanger (51) and the second adsorption heat exchanger (52) operates as a gas cooler, and the other operates as an evaporator.

-Modification 2 of embodiment-
In the humidity control apparatus (10) of the present embodiment, the adsorbent carried on the first adsorption heat exchanger (51) and the second adsorption heat exchanger (52) is heated or cooled by the refrigerant. The adsorbent may be heated or cooled by supplying cold water or hot water to the first adsorption heat exchanger (51) and the second adsorption heat exchanger (52).

—Modification 3 of Embodiment—
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 present 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. The first adsorption element (111) and the second adsorption element (112) include an adsorbent such as zeolite. A large number of air passages are formed in each adsorption element (111, 112), and the air comes into contact with the adsorbent when passing through the air passages.

  The humidity control apparatus (10) of the present modification includes a normal operation mode for performing dehumidification ventilation operation and humidification ventilation operation, a stop operation mode for performing simple ventilation operation and purge operation, dehumidification ventilation operation, humidification ventilation operation, It has a forced stop mode that stops all simple ventilation and purge operations.

  The humidity control apparatus (10) during the dehumidification / ventilation operation or the humidification / ventilation operation repeats the first operation and the second operation alternately at predetermined time intervals. The humidity control apparatus (10) during the dehumidification / ventilation operation takes outdoor air as first air and takes indoor air as second air. On the other hand, the humidity control apparatus (10) during the humidification ventilation operation takes in indoor air as the first air and takes in outdoor air as the second air.

  First, the first operation of the dehumidifying ventilation operation and the humidifying ventilation operation will be described with reference to FIG. The humidity controller (10) in the first operation supplies the second air heated by the condenser (102) to the first adsorption element (111). In the first adsorption element (111), the adsorbent is heated by the second air, and moisture is desorbed from the adsorbent. In addition, the humidity controller (10) during the first operation supplies the first air to the second adsorption element (112), and adsorbs the moisture in the first air to the second adsorption element (112). The first air deprived of moisture by the second adsorption element (112) is cooled when passing through the evaporator (104).

  Next, the second operation of the dehumidifying ventilation operation and the humidifying ventilation operation will be described with reference to FIG. The humidity control apparatus (10) in the second operation supplies the second air heated by the condenser (102) to the second adsorption element (112). In the second adsorption element (112), the adsorbent is heated by the second air, and moisture is desorbed from the adsorbent. Moreover, the humidity control apparatus (10) in the first operation supplies the first air to the first adsorption element (111), and adsorbs the moisture in the first air to the first adsorption element (111). The first air deprived of moisture by the first adsorption element (111) is cooled when passing through the evaporator (104).

  The humidity control apparatus (10) during the dehumidification / ventilation operation supplies the dehumidified first air (outdoor air) to the room, and the moisture desorbed from the adsorption elements (111, 112) together with the second air (indoor air). Drain outside. In addition, the humidity control apparatus (10) during the humidification ventilation operation supplies the humidified second air (outdoor air) to the room, and the adsorbing element (111, 112) removes the first air (room air) from the moisture. Drain outside.

  In the humidity control apparatus (10) during the simple ventilation operation, the compressor (101) of the refrigerant circuit (100) is stopped, and one of the first adsorption element (111) and the second adsorption element (112) is turned on. Outdoor air passes and room air passes through the other. The outdoor air is supplied to the room after passing through the adsorption elements (111, 112), and the room air is discharged to the outside after passing through the adsorption elements (111, 112). In the humidity control apparatus (10) during the simple ventilation operation, the outdoor air and the indoor air are not switched.

  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 abbreviate | omits a part of casing and an electrical component box from the humidity control apparatus seen from the front side. It is a schematic plan view, a right side view, and a left side view showing a humidity controller with a part thereof omitted. FIG. 2 is a piping system diagram showing a configuration of a refrigerant circuit, in which (A) shows operations during a first normal operation and a first purge operation, and (B) shows a second normal operation and a second purge operation. The operation | movement inside is shown. It is a schematic plan view, a right side view, and a left side view of the humidity control apparatus showing the air flow in the first normal operation of the dehumidifying ventilation operation. It is a schematic plan view, a right side view, and a left side view of the humidity control apparatus showing the air flow in the second normal operation of the dehumidifying ventilation operation. It is a schematic plan view, a right side view, and a left side view of a humidity control apparatus showing a flow of air in a first normal operation of a humidification ventilation operation. It is a schematic plan view, a right side view, and a left side view of the humidity control apparatus showing the air flow in the second normal operation of the humidification ventilation operation. It is a schematic plan view, a right side view, and a left side view of a humidity control apparatus showing the flow of air in simple ventilation operation. It is a schematic plan view, a right side view, and a left side view of a humidity control apparatus showing an air flow in a purge operation. It is a flowchart which shows the control operation of the controller during purge operation. It is a schematic block diagram which shows the humidity control apparatus of the modification 3 of embodiment, Comprising: (A) shows the operation | movement in 1st operation | movement, (B) shows the operation | movement in 2nd operation | movement. .

Explanation of symbols

10 Humidity control device
11 Casing
31 Supply side passage (air passage)
32 Inside air passage (air passage)
33 Exhaust side passage (air passage)
34 Outside air passage (air passage)
37 1st heat exchanger room (air passage)
38 Second heat exchanger room (air passage)
41 First inside air damper (opening / closing mechanism)
42 Second inside air damper (opening / closing mechanism)
43 First outside air damper (opening / closing mechanism)
44 Second outside air damper (opening / closing mechanism)
45 First air supply damper (opening / closing mechanism)
46 Second air supply damper (opening / closing mechanism)
47 First exhaust damper (open / close mechanism)
48 Second exhaust damper (opening / closing mechanism)
50 Refrigerant circuit (humidity control)
51 First adsorption heat exchanger (adsorption member)
52 Second adsorption heat exchanger (adsorption member)
81 First bypass passage (air passage)
82 Second bypass passage (air passage)
83 First bypass damper (opening / closing mechanism)
84 Second bypass damper (open / close mechanism)

Claims (3)

A casing (11) in which an air passage (31-34, 37, 38, 81, 82) is formed, and an air passage (31-34, 37, 38, 81, 82) and humidity control means (50) for adjusting the humidity of the air flowing through the casing (11), and the humidity of the outdoor air taken into the casing (11) is adjusted by the humidity control means (50) and then supplied to the room And a humidity control device for discharging indoor air taken into the casing (11) to the outside,
An opening / closing mechanism (41 to 48, 83, 84) disposed in the casing (11) for opening and closing a portion of the air passage (31 to 34, 37, 38, 81, 82) that communicates the room with the outside. )
The air passage in the casing (11) after the operation in operation for performing the operation according to the operation command input by the user, and after the stop command from the user is input and before the operation command is input from the user (31-34, 37, 38, 81, 82) while selectively performing the operation during stop for circulating air,
Forced to stop the operation during operation and the operation during stop and close the open / close mechanism (41 to 48, 83, 84) to shut off the room and the outside when a forced stop command is received A humidity control apparatus characterized by performing a stop operation. In claim 1,
The operation during the stop is a ventilation operation for supplying the outdoor air to the room without adjusting the humidity and exhausting the indoor air to the outside without adjusting the humidity. In claim 1,
The humidity control means (50) has an adsorption member (51, 52) capable of adsorbing moisture in the air and desorbing moisture into the air,
In the stop operation, in order to desorb odorous substances from the adsorbing member (51, 52), moisture in the taken-in air is adsorbed to the adsorbing member (51, 52), and the adsorbing member (51, 52). ) In which the moisture content is equal to or greater than the maximum value of the moisture content of the adsorption member (51, 52) during the humidity conditioning operation.

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