JP2012225529A - Humidity control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To regenerate an adsorbent of an adsorption heat exchanger immediately after the start of a regeneration operation in a short time, in a humidity control device equipped with a refrigerant circuit for performing a refrigerant cycle.SOLUTION: The humidity control device is provided with a hot water coil mechanism (66). The hot water coil mechanism (66) performs a heating operation to heat the upstream air of adsorption heat exchangers (51, 52) in the course of a reproducing operation over a predetermined period immediately after being switched from an adsorbing operation to the reproducing operation and a suspension operation to suspend the heating of the air until the reproducing operation is switched to the adsorbing operation after the heating operation.

Description

  The present invention relates to a humidity control apparatus that includes a refrigerant circuit provided with an adsorption heat exchanger, and conditioned air with an adsorbent of the adsorption heat exchanger.

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

  The humidity control device disclosed in Patent Document 1 is provided with a refrigerant circuit including two adsorption heat exchangers. The refrigerant circuit is provided with a refrigerant switching mechanism for switching the circulation direction of the refrigerant flowing through the refrigerant circuit. By switching the switching mechanism, the first adsorption heat exchanger serves as a condenser and the second adsorption heat. An operation in which the exchanger serves as an evaporator and an operation in which the second adsorption heat exchanger serves as a condenser and the first adsorption heat exchanger serves as an evaporator are alternately performed. In an adsorption heat exchanger that operates as an evaporator, an adsorption operation is performed in which moisture in the air is adsorbed by the adsorbent. In the adsorption heat exchanger that operates as a condenser, a regeneration operation in which moisture is desorbed from the adsorbent is performed.

  The humidity control device disclosed in Patent Document 1 supplies one of the air that has passed through each adsorption heat exchanger to the room and discharges the other to the outside. In the humidity control apparatus during the dehumidifying operation, the air that has passed through the first adsorption heat exchanger and the second adsorption heat exchanger that operates as an evaporator is supplied into the room, and the air that has passed through the one that operates as a condenser. Is discharged outside the room. Further, in the humidity control apparatus during the humidification operation, the air that has passed through the first adsorption heat exchanger and the second adsorption heat exchanger that operates as an evaporator is discharged to the outside and passes through the one that operates as a condenser. The air is supplied into the room.

JP 2006-078108 A

  By the way, when the switching mechanism is switched, the adsorption heat exchanger operating as an evaporator before switching operates as a condenser. Immediately after switching the switching mechanism, the adsorbent of the adsorption heat exchanger that has started to operate as a condenser has a relatively low temperature, so that the adsorbent cannot be sufficiently regenerated immediately after switching. As a result, since the adsorbent regeneration operation takes time, it takes time to humidify the room, and it takes time to recover the moisture adsorption capacity of the adsorbent.

  This invention is made | formed in view of this point, The objective is the humidity control apparatus provided with the refrigerant circuit which performs a refrigerating cycle, and the adsorption agent of the adsorption heat exchanger immediately after starting reproduction | regeneration operation | movement is carried out in a short time. It is to reproduce.

  The first invention has an adsorption heat exchanger (51, 52) carrying an adsorbent on its surface, a refrigerant circuit (50) in which a refrigeration cycle is performed by circulating refrigerant, and the refrigerant circuit (50) And a switching mechanism (54) for switching the circulation direction of the refrigerant. In the adsorption heat exchanger (51, 52), the adsorption operation of the adsorbent is performed by switching the switching mechanism (54). A humidity control apparatus that alternately performs the regeneration operation and supplies the air flowing through the adsorption heat exchanger (51, 52) during the regeneration operation to the room or exhausts it to the outside is targeted. And it has a hot water coil (67a, 67b) for heating the air, and the air upstream of the adsorption heat exchanger (51, 52) during the regeneration operation is immediately after switching from the adsorption operation to the regeneration operation. There is provided a hot water coil mechanism (66) for performing a heating operation for heating for a predetermined period and a pause operation for stopping the heating of air after the heating operation until switching from the regeneration operation to the adsorption operation. It is characterized by that.

  In the first invention, the adsorption heat exchanger (51, 52) alternately performs the adsorption operation and the regeneration operation by switching the switching mechanism (54). The air flowing through the adsorption heat exchanger (51, 52) during the regeneration operation is supplied into the room or discharged out of the room. When this air is supplied into the room, moisture released from the adsorbent flows into the room together with the air, so that the room is humidified. On the other hand, when this air is discharged to the outside, the moisture released from the adsorbent is discharged together with the air to the outside and the adsorbent is regenerated.

  In the first invention, the hot water coil mechanism (66) performs a heating operation for heating the air flowing into the adsorption heat exchanger (51, 52) and a pause operation for pausing the heating of the air.

  Specifically, in the heating operation, the air flowing upstream of the adsorption heat exchanger (51, 52) switched from the adsorption operation to the regeneration operation by the switching of the switching mechanism (54) flows in a predetermined period immediately after the switching. It is heated by the hot water flowing through the hot water coils (67a, 67b). Thereby, the adsorbent of the adsorption heat exchanger (51, 52) immediately after the start of the regeneration operation is heated by the refrigerant circulating in the refrigerant circuit (50) during a predetermined period immediately after the switching of the switching mechanism (54). In addition to being heated, it is also heated by the air heated by the hot water coils (67a, 67b).

  On the other hand, in the pause operation, the heating of the air by the hot water coils (67a, 67b) is paused after the heating operation is completed until the regeneration operation is switched to the adsorption operation. Thereby, after the predetermined time immediately after switching of the switching mechanism (54), the adsorption heat exchanger (51, 52) has a relatively low temperature that is not heated by the hot water coils (67a, 67b). Air flows in.

  According to a second invention, in the first invention, the outside air inlet (24) for taking in the air flowing into the adsorption heat exchanger (51, 52) from the outside, and the outside air temperature detection for detecting the temperature of the outside air And the hot water coil includes an outdoor air side hot water coil (67b) that heats the air taken from outside through the outside air inlet (24), and the air taken from the outside air inlet (24) Is flowing through the adsorption heat exchanger (51, 52) during the regeneration operation and supplied to the room, the hot water coil mechanism (66) has a detected temperature (to) of the outside air temperature detection unit (99). The heating operation is prohibited when the value is equal to or greater than a predetermined value (tos1).

  In the second invention, the air taken in from the outside air inlet (24) flows through the adsorption heat exchanger (51, 52) during the regeneration operation and is supplied into the room. That is, humidified air is supplied into the room. In this case, when the temperature of the outdoor air is equal to or higher than a predetermined value (tos1), the amount of water that can be contained in the air is relatively large, so that the air is sent to the room without heating. A lot of moisture can be included in the air.

  According to a third invention, in the first or second invention, an internal air inlet (23) for taking in air flowing into the adsorption heat exchanger (51, 52) from the room and detecting a relative humidity of the room air An internal air humidity detector (96), and the hot water coil includes an internal air side hot water coil (67a) for heating air taken in from the room through the indoor air inlet (23), and the indoor air inlet (23) When the air taken in from the refrigerant flows through the adsorption heat exchanger (51, 52) during the regeneration operation and is discharged outside the room, the hot water coil mechanism (66) detects the humidity detected by the room air humidity detector (96). The heating operation is prohibited when (hr) is less than or equal to a predetermined value (hrs).

  In the third invention, the air taken in from the inside air suction port (23) flows through the adsorption heat exchanger (51, 52) during the regeneration operation and is discharged outside the room. At this time, when the relative humidity in the room is equal to or lower than a predetermined value (hrs), the amount of moisture that can be contained in the air is relatively large. Therefore, the moisture released from the adsorbent without heating the air Is exhausted to the outside in a state where it is sufficiently contained in the air.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the hot water coil mechanism (66) removes the air upstream of the adsorption heat exchanger (51, 52) during the regeneration operation. A preheating operation for supplying hot water to the hot water coils (67a, 67b) to be heated is performed immediately before the start of the regeneration operation.

  In the fourth invention, since the hot water is supplied to the hot water coils (67a, 67b) immediately before the adsorption heat exchanger (51, 52) starts the regeneration operation, the adsorption heat exchanger (51, 52) When the regenerating operation is started, the hot water coils (67a, 67b) are already heated. Therefore, relatively high-temperature air is sent to the adsorption heat exchanger (51, 52) immediately after the start of the regeneration operation.

  5th invention is the hot water production | generation part (61a) which produces | generates warm water with sunlight in any one of 1st to 4th invention, and the warm water produced | generated by this warm water production | generation part (61a) A hot water supply mechanism (61) having a hot water supply path (61b) for supplying the hot water coils (67a, 67b) is provided.

  In 5th invention, the warm water produced | generated with sunlight in the warm water production | generation part (61a) is supplied to a warm water coil (67a, 67b) through a warm water supply path (61b).

  According to the first invention, the relatively low temperature adsorption heat exchanger (51, 52) immediately after the start of the regeneration operation is not only heated by the refrigerant circulating in the refrigerant circuit (50), but also the hot water coil. It is also heated by the air heated by (67a, 67b). In this way, since the temperature of the adsorbent in the adsorption heat exchanger (51, 52) immediately after the start of the regeneration operation increases in a relatively short time, the adsorbent in the adsorption heat exchanger (51, 52) can be reduced in a relatively short time. Can be played. As a result, the room can be quickly humidified and the adsorption capacity of the adsorbent can be quickly recovered.

  Further, the heating of the air flowing to the adsorption heat exchanger (51, 52) is stopped after a predetermined period immediately after the start of the regeneration operation, and thereafter, the adsorption heat exchanger (51, 52) is heated to the hot water. The relatively cool air that is not heated by the coils (67a, 67b) flows in. Thereby, since excessive heating of the adsorption heat exchanger (51, 52) is suppressed, an increase in pressure on the high pressure side in the refrigerant circuit (50) can be suppressed. Moreover, while the heating of the air flowing to the adsorption heat exchanger (51, 52) is stopped as described above, the electric power for driving the hot water coil mechanism (66) and the hot water coil mechanism (66) Since electric power for driving a mechanism for supplying hot water is not necessary, the humidity control apparatus can be energy-saving.

  Moreover, according to 2nd invention, the electric power for driving a hot water coil mechanism (66) etc. can be reduced, maintaining the humidification capability of a humidity control apparatus.

  Further, according to the third invention, it is possible to reduce the electric power for driving the hot water coil mechanism (66) and the like while sufficiently discharging the moisture adsorbed by the adsorbent to the outside of the room.

  Further, according to the fourth invention, the adsorption heat exchanger (51, 52) immediately after the start of the regeneration operation can be heated with relatively high temperature air. Thereby, the adsorbent can be regenerated in a shorter time.

  In addition, according to the fifth aspect, it is not necessary to use an energy source such as electric power or gas in order to generate hot water, so that the humidity control apparatus can be energy-saving.

FIG. 1 is a perspective view showing the humidity control device body as viewed from the front side with the top plate of the casing omitted. FIG. 2 is a perspective view showing the humidity control device main body as viewed from the front side, omitting a part of the casing and the electrical component box. FIG. 3 is a plan view showing the humidity control apparatus main body with the inner hot water coil and the outer hot water coil attached thereto, omitting the top plate of the casing. FIG. 4 is a schematic plan view, right side view, and left side view in which a part of the humidity control apparatus main body is omitted. FIG. 5 is a piping system diagram showing the configuration of the refrigerant circuit, in which FIG. 5 (A) shows the first normal operation, and FIG. 5 (B) shows the second normal operation. FIG. 6 is a piping diagram showing the configuration of the hot water circuit of the heating mechanism. FIG. 7 is a schematic plan view, right side view, and left side view of the humidity control apparatus main body showing the air flow in the first normal operation of the dehumidifying ventilation operation. FIG. 8 is a schematic plan view, right side view, and left side view of the humidity control apparatus main body showing the air flow in the second normal operation of the dehumidifying ventilation operation. FIG. 9 is a schematic plan view, right side view, and left side view of the humidity control apparatus main body showing the air flow in the first normal operation of the humidification ventilation operation. FIG. 10 is a schematic plan view, right side view, and left side view of the humidity control apparatus main body showing the air flow in the second normal operation of the humidification ventilation operation. FIG. 11 is a schematic plan view, right side view, and left side view of the humidity control apparatus main body showing the air flow in the simple ventilation operation. FIG. 12 is a schematic plan view, right side view, and left side view of the humidity control apparatus main body showing the air flow in the outside air purge operation. FIG. 13 is a table summarizing the water entry conditions for each hot water coil. FIG. 14 is a piping diagram illustrating a configuration of a hot water circuit of a heating mechanism of the humidity control apparatus according to the second embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use.

Embodiment 1 of the Invention
The humidity control apparatus (1) of the first embodiment includes a humidity control apparatus main body (10) and a heating mechanism (60). The humidity control device main body (10) is used to adjust the humidity in the room and ventilate the room. Adjust the humidity to supply the outdoor air (OA) to the room and supply the indoor air (RA) to the outdoor. To discharge. An air conditioner (not shown) is also provided in the room that is the target of the humidity control device main body (10). That is, in this room, the humidity in the room is adjusted by the humidity control device main body (10), and the temperature in the room is also adjusted by the air conditioner. The heating mechanism (60) is for heating outdoor air (OA) and indoor air (RA) flowing into the humidity controller main body (10) under predetermined conditions. The humidity control device (1) and the air conditioner constitute an air conditioning system that simultaneously processes latent heat and sensible heat in the room.

<Configuration of humidity control device body>
The humidity control device main body (10) will be described with reference to FIGS. Unless otherwise specified, “upper”, “lower”, “left”, “right”, “front”, “rear”, “front”, and “back” used in the description here refer to the humidity control device body (10) on the front side. It means the direction when seen from.

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

  The casing (11) is formed in a rectangular parallelepiped shape that is slightly flat and relatively low in height. In the casing (11) 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 inside air passage (32) communicates with the room through a duct (not shown) connected to the inside air inlet (23). The outside air side passage (34) communicates with the outdoor space via a duct (not shown) connected to the outside air inlet (24).

  An inside air side filter (27), an inside air humidity sensor (96), and an inside air temperature sensor (98) are installed in the inside air passage (32). The room air humidity sensor (96) constitutes a room air humidity detection unit that detects the relative humidity of indoor air. The room temperature sensor (98) constitutes a room temperature detector that detects the temperature of indoor air. Further, an outside air filter (28) and an outside air temperature sensor (99) are installed in the outside air passage (34). The outside temperature sensor (99) constitutes an outside temperature detector that detects the temperature of the outdoor air. The inside air temperature sensor (98) and the outside air temperature sensor (99) are not shown in FIG.

  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).

  Each adsorption heat exchanger (51, 52) constitutes an adsorption member for bringing the adsorbent into contact with air. 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. As the adsorbent supported on the adsorption heat exchanger (51, 52), zeolite, silica gel, or a mixture thereof is used.

  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).

  Specifically, these fans (25, 26) include a fan rotor (not shown), a fan casing (86), and a fan motor (89). Although not shown, the fan rotor is formed in a cylindrical shape whose axial length is shorter than the diameter, and a large number of blades are formed on the peripheral side surface. The fan rotor is accommodated in the fan casing (86). In the fan casing (86), an inlet (87) is opened on one of the side surfaces (the side surface orthogonal to the axial direction of the fan rotor). Further, the fan casing (86) is formed with a portion that protrudes outward from the peripheral side surface, and an outlet (88) is opened at the protruding end of the portion. The fan motor (89) is attached to the side surface of the fan casing (86) opposite to the suction port (87). The fan motor (89) is connected to the fan rotor and rotationally drives the fan rotor.

  In the supply fan (26) and the exhaust fan (25), when the fan rotor is rotationally driven by the fan motor (89), air is sucked into the fan casing (86) through the suction port (87), and the fan Air in the casing (86) is blown out from the air outlet (88).

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

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

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

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

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

  In the front panel portion (12) of the casing (11), an electrical component box (90) is attached to the right side portion thereof. 2 and 4, the electrical component box (90) is omitted. The electrical component box (90) is a rectangular parallelepiped box, and the control board (91) and the power supply board (92) are accommodated therein. The control board (91) and the power supply board (92) are attached to the inner side surface of the side plate of the electrical component box (90) adjacent to the front panel portion (12) (that is, the back plate). A radiating fin (93) is provided in the inverter portion of the power supply substrate (92). The heat dissipating fin (93) protrudes from the back of the power supply board (92) and feeds through the back plate of the electrical component box (90) and the front panel (12) of the casing (11). The air fan chamber (36) is exposed (see FIG. 3).

<Configuration of refrigerant circuit>
As shown in FIG. 5, 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.

  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 (the state shown in FIG. 5A) 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. These ports can be switched to the second state (the state shown in FIG. 5B) in which the second port and the fourth port communicate with each other and the second port and the third port communicate with each other.

  The compressor (53) is a hermetic compression in which a compression mechanism (not shown) for compressing a refrigerant and an electric motor (not shown) for driving the compression mechanism are accommodated 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 pipe connecting the discharge side of the compressor (53) and the first port of the four-way switching valve (54) includes a high pressure sensor (101) and a discharge pipe temperature sensor (103). It is attached. The high pressure sensor (101) measures the pressure of the refrigerant discharged from the compressor (53). The discharge pipe temperature sensor (103) measures the temperature of the refrigerant discharged from the compressor (53).

  In the refrigerant circuit (50), a low pressure sensor (102) and a suction pipe temperature sensor (104) 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 (102) measures the pressure of the refrigerant sucked into the compressor (53). The suction pipe temperature sensor (104) measures the temperature of the refrigerant sucked into the compressor (53).

  In the refrigerant circuit (50), a pipe temperature sensor (105) 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 (105) 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 heating mechanism>
As shown in FIG. 6, the heating mechanism (60) includes a hot water supply mechanism (61) and a hot water coil mechanism (66).

  The warm water supply mechanism (61) includes a warm water generation section (61a) and a first circulation channel as a warm water supply path for supplying the warm water generated by the warm water generation section (61a) to the warm water coil mechanism (66). (61b).

  The hot water generator (61a) includes a hot water storage tank (62), a second pump (63), a heat collector (64), and a second circulation channel (65) connecting them together. The hot water storage tank (62) is for storing hot water therein. The starting end of the second circulation channel (65) is connected to the lower part of the hot water storage tank (62), and the end of the second circulation channel (65) is connected to the upper part of the hot water storage tank (62). The hot water tank (62) stores hot water heated by a heat collector (64), which will be described in detail later. The second pump (63) is provided in the second circulation channel (65), and causes the water in the second circulation channel (65) to flow from the start side to the end side of the second circulation channel (65). It is for conveying (toward the direction of the white arrow in FIG. 6).

  The heat collector (64) is for generating hot water using radiant heat from the sun. The heat collector (64) is installed outdoors where it is easy to receive sunlight. The heat collector (64) includes a heat collecting section (64a) and a water passage (64b) formed inside the heat collecting section (64a). The heat collection part (64a) is for absorbing solar heat, and is formed in a flat plate shape by aluminum, for example. The inflow end and the outflow end of the water channel (64b) are connected to the second circulation channel (65).

  When the second pump (63) is driven in the hot water generator (61a) having the above-described configuration, the water in the hot water storage tank (62) circulates through the second circulation channel (65). The water flowing from the hot water storage tank (62) to the second circulation channel (65) flows into the water passage (64b) of the heat collector (64). This water is heated to heat water by exchanging heat with the heat collecting section (64a) heated by sunlight. This warm water is returned again to the second circulation channel (65) and then flows into the hot water storage tank (62).

  The first circulation channel (61b) has a start end connected to the upper part of the hot water storage tank (62) and a terminal end connected to the lower part of the hot water storage tank (62). The first circulation channel (61b) joins again after the middle portion branches into the first branch channel (61c) and the second branch channel (61d). A first pump (69) is provided in a portion upstream of the first branch path (61c) and the second branch path (61d) in the first circulation channel (61b). The first pump (69) moves the water in the first circulation channel (61b) from the start end side to the end side of the first circulation channel (61b) (in the direction of the black arrow in FIG. 6). It is for carrying.

  A hot water temperature sensor (106) is provided at a portion upstream of the first branch path (61c) and the second branch path (61d) in the first circulation channel (61b). The hot water temperature sensor (106) measures the temperature of the hot water flowing into the first branch path (61c) and the second branch path (61d).

  The hot water coil mechanism (66) includes two hot water coils (67a, 67b) and two on-off valves (68a, 68b) provided corresponding to the hot water coils (67a, 67b), respectively.

  The two hot water coils are composed of an inside air side hot water coil (67a) and an outside air side hot water coil (67b). As shown in FIG. 3, the inside air side hot water coil (67a) is attached to the inside air suction port (23), and the outside air side warm water coil (67b) is attached to the outside air suction port (24). Each of these hot water coils (67a, 67b) includes a hot water channel (not shown). The hot water flow path of the inside air side hot water coil (67a) is connected to the first branch path (61c), and the hot water flow path of the outside air side hot water coil (67b) is connected to the second branch path (61d). The hot water flowing through the hot water flow path of the inside air side hot water coil (67a) exchanges heat with the air flowing through the inside air suction port (23). The hot water flowing through the hot water flow path of the outside air side hot water coil (67b) exchanges heat with the air flowing through the outside air inlet (24).

  The two on-off valves are constituted by an inside air side on-off valve (68a) and an outside air side on-off valve (68b). The room air side on-off valve (68a) is disposed in a portion upstream of the room air side hot water coil (67a) in the first branch path (61c). The outside air side on-off valve (68b) is arranged in a portion upstream of the outside air side hot water coil (67b) in the second branch passage (61d).

  The hot water coil mechanism (66) includes a second control unit (56b). The second controller (56b) is provided in a controller (56), which will be described in detail later. The second controller (56b) opens and closes the inside air side opening / closing valve (68a) and the outside air side opening / closing valve (68b) under a predetermined condition.

<Configuration of controller>
The humidity control device main body (10) includes a controller (56). In the humidity control device main body (10) of the present embodiment, the microcomputer provided on the control board (91) constitutes the controller (56). The controller (56) is provided with a first control unit (56a) and a second control unit (56b).

  Measurement values of the inside air humidity sensor (96), the inside air temperature sensor (98), and the outside air temperature sensor (99) are input to the first control unit (56a). Moreover, the measured value of each sensor (91, 92, ...) provided in the refrigerant circuit (50) is input to the first control unit (56a). The first controller (56a) controls the operation of the humidity controller main body (10) based on these input measurement values.

  In the humidity controller main body (10), the dehumidification ventilation operation, the humidification ventilation operation, the simple ventilation operation, and the purge operation described later are switched by the control operation of the first control unit (56a). In addition, the controller (56), during these operations, each damper (41-48), each fan (25, 26), compressor (53), electric expansion valve (55), and four-way switching valve (54) To control the operation.

  The second control unit (56b) constitutes a part of the hot water coil mechanism (66). The second control unit (56b) includes detected values (hr, tr, to, tw) of the inside air humidity sensor (96), the inside air temperature sensor (98), the outside air temperature sensor (99), and the hot water temperature sensor (106). Entered. In addition, predetermined values (hrs, tos1, tos2, tws) are input in advance to the second control unit (56b). In the second control unit (56b), based on the detected values (hr, tr, to, tw) and the predetermined values (hrs, tos1, tos2, tws), the hot water coil mechanism (66) will be described in detail later. The opening and closing of the two on-off valves (68a, 68b) are controlled so as to perform the heating operation, the pause operation, and the preheating operation.

-Driving action-
The humidity control apparatus main body (10) of this embodiment selectively performs a dehumidification ventilation operation, a humidification ventilation operation, a simple ventilation operation, and a purge operation. The humidity control device main body (10) performs dehumidification ventilation operation and humidification ventilation operation as normal operation.

<Dehumidification ventilation operation>
In the humidity control apparatus main body (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 main body (10) during the dehumidifying and ventilating 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). ) Is taken in as second air.

  First, the first normal operation of the dehumidifying ventilation operation will be described. As shown in FIG. 7, during the first normal operation, the first inside air damper (41), the first outside air damper (43), the second supply air damper (46), and the first exhaust air damper (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. 5A), and the first adsorption heat exchanger (51) is set. 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. 8, 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. 5B), 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 device main body (10) during the humidification ventilation operation, a first normal operation and a second normal operation 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 device main body (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). ) Is taken in as first air.

  First, the first normal operation of the humidified ventilation operation will be described. As shown in FIG. 9, 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. 5A), and the first adsorption heat exchanger (51) is set. 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. 10, 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. 5B), 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 unit main body (10) supplies the outdoor air (OA) taken in as it is to the room as supply air (SA), and at the same time, the taken indoor air (RA) as it is as exhaust air (EA). Drain outside. Here, the operation of the humidity control apparatus main body (10) during the simple ventilation operation will be described with reference to FIG.

  In the humidity control apparatus main body (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 are opened. (42), 1st outside air side damper (43), 2nd outside air side damper (44), 1st air supply side damper (45), 2nd air supply side damper (46), 1st exhaust side 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 device main body (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 device main body (10) during the simple ventilation operation, room air is taken into the casing (11) from the indoor 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).

<Purge operation>
In the humidity control apparatus (1) 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). .

  As shown in FIG. 12, in the humidity control apparatus (1) 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 The side damper (48) is opened, and the first inside air damper (41), the second inside air damper (42), the first air supply damper (45), the second air supply damper (46), the first The bypass damper (83) and the second bypass damper (84) are closed. Further, in the humidity control apparatus (1) during the purge operation, only the exhaust fan (25) is operated, and the air supply fan (26) remains stopped. That is, during the outdoor air purge operation, outdoor air (OA) is taken into the casing (11), and this air is discharged outside the room as the first air.

  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. 5A), 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 (56) controls the capacity of the compressor (53) and the opening of the electric expansion valve (55). Detailed control operation of the controller (56) 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 device (1) 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. 5B), 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 (56) controls the capacity of the compressor (53) and the opening of the electric expansion valve (55).

  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.

<Preheating operation, heating operation and pause operation of hot water coil mechanism>
The hot water coil mechanism (66) performs a preheating operation, a heating operation, and a pause operation under predetermined conditions during the dehumidifying ventilation operation, the humidifying ventilation operation, or the simple ventilation operation of the humidity control apparatus. Hereinafter, the operation of the hot water coil mechanism during dehumidification ventilation operation, humidification ventilation operation, and simple ventilation operation will be described.

-Operation of hot water coil mechanism during dehumidification ventilation operation-
During the dehumidification / ventilation operation of the humidity controller, the second control unit (56b) compares the detected value (hr) of the room air humidity sensor (96) with a predetermined value (hrs) (50% in the first embodiment). At the same time, the detected value (tw) of the hot water temperature sensor (106) is compared with the detected value (tr) of the inside air temperature sensor (98). As a result, when the detected value (hr) at the indoor air humidity sensor (96) exceeds a predetermined value (hrs), the detected value (tw) at the hot water temperature sensor (106) is When the detected value (tr) exceeds 5 ° C. (see FIG. 13) (see FIG. 13), the hot water coil mechanism (66) performs a heating operation for heating the inside air side hot water coil (67a).

  Specifically, the hot water coil mechanism (66) is a hot water coil that heats the air on the upstream side of the adsorption heat exchanger that is being regenerated among the two adsorption heat exchangers during the dehumidification ventilation operation (that is, the internal air side hot water). The hot water is supplied to the coil (67a) for a predetermined period after the regeneration operation is started, and the air is heated by the inside air side hot water coil (67a). Hereinafter, a case where the regeneration operation is first performed in the first adsorption heat exchanger (51) and then the regeneration operation is performed in the second adsorption heat exchanger (52) will be described.

  In the heating operation, the first pump (69) is driven. The heating operation is performed after the humidity control device main body (10) is switched from the second normal operation to the first normal operation (after the four-way switching valve (54) is switched from the second state to the first state). The operation is started when the on-off valve (68a) is opened and the outside air on-off valve (68b) is closed. Thereby, the hot water from the hot water storage tank (62) flows into the inside air side hot water coil (67a), and the inside air side hot water coil (67a) is heated. The air from the room heated by the indoor air side hot water coil (67a) flows through the first adsorption heat exchanger (51) having a relatively low temperature immediately after the start of the regeneration operation to flow through the first adsorption heat exchanger (51 ) Is heated and is humidified by the moisture released from the adsorbent and flows out of the room. This heating operation is continued for about several tens of seconds. During the heating operation, the adsorbent of the first adsorption heat exchanger (51) is heated by the high-temperature refrigerant compressed by the compressor (53) and the air heated by the inside air side hot water coil (67a). The

  The pause operation is performed after the heating operation is completed. In the pause operation, the first pump (69) is stopped. This resting operation is started when both the inside air side opening / closing valve (68a) and the outside air side opening / closing valve (68b) are closed. Thereby, supply of warm water to the inside air side warm water coil (67a) is stopped. To the first adsorption heat exchanger (51), relatively low-temperature air that has not been heated by the inside-air side hot water coil (67a) flows and is discharged to the outside. This pause operation is continued until immediately before the humidity control device main body (10) is switched from the first normal operation to the second normal operation.

  The preheating operation is performed after the end of the pause operation. In the preheating operation, the first pump (69) is driven. This preheating operation is started when the inside air side opening / closing valve (68a) is opened and the outside air side opening / closing valve (68b) is closed. Thereby, inflow of warm water to the inside air side hot water coil (67a) is started, and the inside air side warm water coil (67a) is heated. This preheating operation is continued until the humidity control apparatus body (10) is switched from the first normal operation to the second normal operation.

  Next, after the humidity control device main body (10) is switched from the first state to the second state (after the four-way switching valve (54) is switched from the first state to the second state), the heating operation is resumed. The operation and the preheating operation are sequentially performed. During the heating operation, the air heated by the inside-air side hot water coil (67a) flows through the relatively low-temperature second adsorption heat exchanger (52) immediately after the start of the regeneration operation, and the second adsorption heat exchanger. While heating (52), it is humidified by the water released from the adsorbent and flows out of the room. After the heating operation, a pause operation is performed. During the pause operation, the supply of hot water to the inside air side hot water coil (67a) is stopped, and air that has not been heated by the inside air side hot water coil (67a) flows into the second adsorption heat exchanger (52), It is discharged outside the room. After the pause operation, a preheating operation is performed. During the preheating operation, the inside air side hot water coil (67a) is heated.

  After the preliminary heating operation is completed, the humidity control device main body (10) is switched again from the second normal operation to the first normal operation, and the heating operation is performed again.

  During the dehumidification / ventilation operation of the humidity controller, if the detected value (hr) in the indoor air humidity sensor (96) is less than or equal to the predetermined value (hrs), the detected value (tw) in the hot water temperature sensor (106) When the detected value (tr) of the temperature sensor (98) is equal to or lower than the value obtained by adding 5 ° C., or in both cases, the hot water coil mechanism (66) prohibits the heating operation and the preheating operation.

-Operation of hot water coil mechanism during humidification ventilation operation-
During the humidification ventilation operation of the humidity controller, the second control unit (56b) compares the detection value (to) of the outside air temperature sensor (99) with a predetermined value (tos1) (5 ° C. in the first embodiment). At the same time, the detection value (tw) of the hot water temperature sensor (106) is compared with the detection value (to) of the outside air temperature sensor (99). As a result, when the detected value (to) at the outside air temperature sensor (99) is less than the predetermined value (tos1) and the detected value (tw) at the hot water temperature sensor (106) is When the detected value (to) exceeds 5 ° C. (see FIG. 13), the hot water coil mechanism (66) performs a preheating operation for heating the outdoor air side hot water coil (67b).

  Specifically, the hot water coil mechanism (66) is a hot water coil that heats the air upstream of the adsorption heat exchanger being regenerated among the two adsorption heat exchangers during the humidification ventilation operation (that is, the outdoor air side hot water). The hot water is supplied to the coil (67b) for a predetermined period after the regeneration operation is started, and the air is heated by the outside air hot water coil (67b). Hereinafter, a case where the regeneration operation is first performed in the first adsorption heat exchanger (51) and then the regeneration operation is performed in the second adsorption heat exchanger (52) will be described.

  In the heating operation, the first pump (69) is driven. The heating operation is performed after the humidity control device main body (10) is switched from the second normal operation to the first normal operation (after the four-way switching valve (54) is switched from the second state to the first state). The operation is started when the on-off valve (68a) is closed and the outside air-side on-off valve (68b) is opened. Thereby, the hot water from the hot water storage tank (62) flows into the outside air side hot water coil (67b), and the outside air side hot water coil (67b) is heated. The outdoor air heated by the outside air side hot water coil (67b) flows through the first adsorption heat exchanger (51) having a relatively low temperature immediately after the start of the regeneration operation to flow through the first adsorption heat exchanger (51 ) Is heated, and is humidified by moisture released from the adsorbent and flows into the room. This heating operation is continued for about several tens of seconds. During the heating operation, the adsorbent of the first adsorption heat exchanger (51) is heated by the high-temperature refrigerant compressed by the compressor (53) and the air heated by the outside air side hot water coil (67b). The

  The pause operation is performed after the heating operation is completed. In the pause operation, the first pump (69) is stopped. The pause operation is started when both the inside air side opening / closing valve (68a) and the outside air side opening / closing valve (68b) are closed. Thereby, supply of warm water to the outside air side warm water coil (67b) is stopped. To the first adsorption heat exchanger (51), relatively low-temperature air that has not been heated by the outdoor air-side hot water coil (67b) flows and is supplied to the room. This pause operation is continued until immediately before the humidity control device main body (10) is switched from the first normal operation to the second normal operation.

  The preheating operation is performed after the end of the pause operation. In the preheating operation, the first pump (69) is driven. This preheating operation is started when the inside air side opening / closing valve (68a) is closed and the outside air side opening / closing valve (68b) is opened. Thereby, inflow of warm water into the outside air side hot water coil (67b) is started, and the outside air side warm water coil (67b) is heated. This preheating operation is continued until the humidity control apparatus body (10) is switched from the first normal operation to the second normal operation.

  Next, after the humidity control device main body (10) is switched from the first state to the second state (after the four-way switching valve (54) is switched from the first state to the second state), the heating operation is resumed. The operation and the preheating operation are sequentially performed. During the heating operation, the air heated by the outdoor air side hot water coil (67b) flows through the second adsorption heat exchanger (52) having a relatively low temperature immediately after the start of the regeneration operation, and the second adsorption heat exchanger. While heating (52), it is humidified by the moisture released from the adsorbent and flows into the room. After the heating operation, a pause operation is performed. During the pause operation, the supply of hot water to the outside air side hot water coil (67b) is stopped, and air that has not been heated by the outside air side hot water coil (67b) flows into the second adsorption heat exchanger (52), Supplied indoors. After the pause operation, a preheating operation is performed. During the preheating operation, the outside air side hot water coil (67b) is heated.

  After the preliminary heating operation is completed, the humidity control device main body (10) is switched again from the second normal operation to the first normal operation, and the heating operation is performed again.

  During the humidification ventilation operation of the humidity controller, if the detected value (to) of the outside air temperature sensor (99) is equal to or greater than the predetermined value (tos1), the detected value (tw) of the hot water temperature sensor (106) is outside air. When the detected value (to) of the temperature sensor (99) is equal to or lower than the value obtained by adding 5 ° C., or in both cases, the hot water coil mechanism (66) prohibits the heating operation and the preheating operation.

-Operation of hot water coil mechanism during simple ventilation operation-
During the simple ventilation operation of the humidity controller, the second control unit (56b) compares the detected value (to) of the outside air temperature sensor (99) with a predetermined value (tos2) (15 ° C. in the first embodiment). At the same time, the detection value (tw) of the hot water temperature sensor (106) is compared with the detection value (to) of the outside air temperature sensor (99). As a result, when the detected value (to) at the outside air temperature sensor (99) is less than the predetermined value (tos2) and the detected value (tw) at the hot water temperature sensor (106) is When the detected value (to) exceeds 5 ° C. (see FIG. 13) (see FIG. 13), the hot water coil mechanism (66) performs a heating operation.

  The heating operation here is performed while the simple ventilation operation is performed. Specifically, the heating operation is performed by closing the inside air side opening / closing valve (68a) and opening the outside air side opening / closing valve (68b). Thereby, inflow of warm water into the outside air side hot water coil (67b) is started, and the outside air side warm water coil (67b) is heated. The air heated by the outdoor air side hot water coil (67b) is supplied into the room through the first bypass passage (81). Thereby, even if the outdoor temperature is 15 ° C. or less, the outside air is heated by the outside air hot water coil (67b) and then supplied to the room, so that it is possible to prevent cold air from flowing into the room. .

  During the simple ventilation operation of the humidity controller, if the detected value (to) of the outside air temperature sensor (99) is greater than or equal to the predetermined value (tos2), the detected value (tw) of the hot water temperature sensor (106) is outside air. When the detected value (to) of the temperature sensor (99) is equal to or lower than the value obtained by adding 5 ° C., or in both cases, the hot water coil mechanism (66) prohibits the heating operation.

-Effect of Embodiment 1-
As described above, in the humidity control apparatus according to the first embodiment, the air flowing into the relatively low temperature adsorption heat exchanger (51, 52) immediately after the start of the regeneration operation is heated. The vessel (51,52) can be heated. In this way, the temperature of the adsorption heat exchanger (51, 52) immediately after the start of the regeneration operation can be increased in a relatively short time, so that the adsorbent in the adsorption heat exchanger (51, 52) can be regenerated in a relatively short time. Can do. As a result, the inside of the room can be quickly humidified during the humidification ventilation operation, and the moisture adsorbed by the adsorbent can be quickly released to the outside during the dehumidification ventilation operation.

  In addition, after the temperature of the adsorption heat exchanger (51, 52) is raised by the heating operation of the hot water coil mechanism (66), the heating of the air flowing into the adsorption heat exchanger (51, 52) is stopped, Heating of the adsorption heat exchanger (51, 52) with hot air stops. Thereby, since it is suppressed that the adsorption heat exchanger (51, 52) after temperature rising is heated excessively, it can suppress that the pressure of the high voltage | pressure side in a refrigerant circuit (50) raises. Moreover, since the first pump (69) is stopped during the pause operation, the power consumption of the first pump (69) can be reduced. Therefore, the humidity control device (1) can be energy-saving.

  In addition, when outdoor air (OA) that has flowed through the adsorption heat exchanger (51, 52) during regeneration operation is supplied to the room, the outdoor air (OA) has a temperature lower than a predetermined value (tos1) Therefore, the amount of moisture that can be included in the air can be increased. As a result, moisture can be sufficiently contained in the air sent into the room. Conversely, outdoor air (OA) is not heated when the temperature is equal to or higher than a predetermined value (tos1). This is because the amount of water that can be contained in the outdoor air (OA) is relatively large when the temperature (to) of the outdoor air (OA) is equal to or higher than the predetermined value (tos1). This is because a large amount of moisture can be included in the air sent to the room without heating the air. Thereby, the electric power for driving a warm water coil mechanism (66) can be reduced, maintaining the humidification capability of a humidity control apparatus.

  Furthermore, when the outdoor air (OA) flowing through the adsorption heat exchanger (51, 52) during the regeneration operation is supplied into the room, the outdoor air (OA) is 5 ° C. higher than the outdoor air (OA). Since it is heated by the outside air side hot water coil (67b) through which hot water having a high temperature flows, the outdoor air (OA) can be reliably heated.

  Further, when the indoor air (RA) that has flowed through the adsorption heat exchanger (51, 52) during the regeneration operation is discharged to the outside, the relative humidity of the indoor air (RA) exceeds a predetermined value (hrs). Since it is heated in some cases, the amount of water that can be included in the air can be increased. As a result, the moisture can be sufficiently contained in the air and discharged to the outside. Conversely, the room air (RA) is not heated when the relative humidity is equal to or lower than a predetermined value (hrs). This is because when the relative humidity (hr) of the room air (RA) is less than or equal to the predetermined value (hrs), the amount of water that can be contained in the room air (RA) is relatively large. This is because a large amount of moisture can be included in the air exhausted outside the room without heating. Thereby, the electric power for driving a warm water coil mechanism (66) can be reduced, fully discharging | emitting the water | moisture content adsorbed by adsorption agent outside.

  Further, when the indoor air (RA) flowing through the adsorption heat exchanger (51, 52) during the regeneration operation is discharged to the outside, the indoor air (RA) is 5 ° C. higher than the indoor air (RA). Since it is heated by the inside air side hot water coil (67a) through which hot water having a high temperature flows, the indoor air (RA) can be reliably heated.

  Further, the hot water coils (67a, 67b) for heating the air flowing into the adsorption heat exchanger (51, 52) for starting the regeneration operation immediately before the adsorption heat exchanger (51, 52) starts the regeneration operation. Since it is preheated by the preheating operation, relatively high temperature air can be sent to the adsorption heat exchanger (51, 52) immediately after the start of the regeneration operation. Therefore, since the temperature of the adsorption heat exchanger (51, 52) can be increased in a shorter time, the adsorbent of the adsorption heat exchanger (51, 52) can be regenerated in a shorter time.

  In addition, when outdoor air (OA) is supplied indoors without passing through the adsorption heat exchanger (51, 52), the outdoor air (OA) is heated when the temperature is lower than a predetermined value (tos2). Therefore, it is possible to avoid the relatively low temperature air from flowing into the room.

  Moreover, in Embodiment 1, since sunlight is used to generate hot water, it is not necessary to use gas, electric power, or the like to generate hot water, and the entire humidity control apparatus can be energy-saving.

<< Embodiment 2 of the Invention >>
The humidity control apparatus according to the second embodiment is different from the humidity control apparatus according to the first embodiment in the configuration of the heating mechanism. Specifically, in the humidity control apparatus according to the second embodiment, warm water supplied to each warm water coil (67a, 67b) is generated by the heat source unit (110).

<Configuration of heat source unit>
As shown in FIG. 14, the heat source unit (110) includes a compressor (112), a heating heat exchanger (113), an expansion valve (114), and an outdoor heat exchanger (115). In the heat source unit (110), a compressor (112), a heating heat exchanger (113), an expansion valve (114), and an outdoor heat exchanger (115) are sequentially connected via a refrigerant pipe to form a closed circuit refrigerant. A circuit (111) is configured. The refrigerant circuit (111) is filled with carbon dioxide as a refrigerant.

  The heating heat exchanger (113) includes a primary heat transfer section (113a) and a secondary heat transfer section (113b). The primary heat transfer section (113a) is connected to a high-pressure line between the compressor (112) and the expansion valve (114). The secondary side heat transfer section (113b) is connected to the second circulation channel (65). In the heating heat exchanger (113), heat is exchanged between the refrigerant flowing through the primary heat transfer section (113a) and the water flowing through the secondary heat transfer section (113b). In the heat source unit (110), the temperature of the refrigerant flowing through the primary heat transfer section (113a) is higher than that of the water flowing through the secondary heat transfer section (113b). For this reason, in the heating heat exchanger (113), the heat of the refrigerant flowing through the primary heat transfer section (113a) is imparted to the water flowing through the secondary heat transfer section (113b). That is, the secondary side heat transfer section (113b) constitutes a heating section that heats the water flowing through the second circulation channel (65). A fan (116) is provided in the vicinity of the outdoor heat exchanger (115). In the outdoor heat exchanger (115), the refrigerant flowing inside the outdoor heat exchanger (115) exchanges heat with the outdoor air blown by the fan (116).

  In the refrigerant circuit (111) of the heat source unit (110), the compressor (112) is operated and the refrigerant circulates to perform a vapor compression refrigeration cycle. That is, in the refrigerant circuit (111), the refrigerant compressed by the compressor (112) radiates heat at the primary side heat transfer section (113a) and is depressurized by the expansion valve (114). The decompressed refrigerant evaporates in the outdoor heat exchanger (115) and is sucked into the compressor (112). This refrigeration cycle is a so-called supercritical cycle in which carbon dioxide as a refrigerant is compressed to a critical pressure or higher.

  In the humidity control apparatus according to the second embodiment, since warm water is generated using a refrigeration cycle, the hot water is relatively stable as compared to the case where hot water is generated using sunlight as in the first embodiment. Can be generated automatically.

  The humidity control apparatus according to the second embodiment has a configuration in which the hot water temperature sensor (106) in the humidity control apparatus according to the first embodiment is omitted.

<Preheating operation, heating operation and pause operation of hot water coil mechanism>
The hot water coil mechanism (66) performs a preheating operation, a heating operation, and a pause operation as in the case of the first embodiment. However, the conditions for performing these operations are different from those in the first embodiment. Specifically, the hot water coil mechanism (66) performs a preheating operation, a heating operation, and a pause operation regardless of the temperature of the hot water flowing into each hot water coil (56a, 56b).

-Effect of Embodiment 2-
As described above, in the humidity control apparatus according to the second embodiment, the hot water supplied to each hot water coil (67a, 67b) is generated by the heat source unit (110) using the refrigeration cycle. If it carries out like this, unlike the case of Embodiment 1, the hot water of the stable temperature can be produced | generated.

  Further, since the temperature of the warm water is stabilized by the heat source unit (110), the warm water temperature sensor (106) for detecting the temperature of the warm water flowing into the warm water coils (67a, 67b) can be omitted. As a result, the configuration of the humidity control apparatus (1) can be simplified.

-Other embodiments-
The embodiment may be configured as follows.

  In each of the above embodiments, the heating operation and the pause operation of the hot water coil mechanism (66) are switched by switching the supply and stop of the hot water to each hot water coil (67a, 67b), but this is not restrictive. For example, by providing two room air intake ports and attaching an indoor air side hot water coil only to one room air intake port, the room air (RA) is allowed to flow by flowing alternately into one room air intake port and the other room air intake port. It is also possible to switch between operation and sleep operation. Similarly, by providing two outside air intake ports, attaching an outside air side hot water coil only to one outside air intake port, and letting outdoor air (OA) flow alternately into one outside air intake port and the other outside air intake port, The heating operation and the pause operation can be switched.

  Moreover, in each said embodiment, although the humidity control apparatus provided with two adsorption heat exchangers (51,52) was objected, the humidity control apparatus provided with only one adsorption heat exchanger can also be objected.

  As described above, the present invention is particularly useful for a humidity control apparatus that switches between the regeneration operation and the adsorption operation of the two adsorption heat exchangers.

DESCRIPTION OF SYMBOLS 1 Humidity control device 23 Inside air suction port 24 Outside air suction port 50 Refrigerant circuit 51 1st adsorption heat exchanger (adsorption heat exchanger)
52 Second adsorption heat exchanger (Adsorption heat exchanger)
54 Four-way switching valve (switching mechanism)
61 Hot Water Supply Mechanism 61a Hot Water Generation Unit 61b First Circulation Channel (Hot Water Supply Channel)
66 Hot water coil mechanism 67a Inside air side hot water coil (hot water coil)
67b Outside air side hot water coil (hot water coil)
96 Ambient air humidity sensor (Ambient air humidity detector)
99 Outside temperature sensor (outside temperature detector)
hr Detection value (detection humidity)
to detection value (detection temperature)

Claims (5)

An adsorption heat exchanger (51, 52) carrying an adsorbent on its surface, a refrigerant circuit (50) in which a refrigerant is circulated and a refrigeration cycle is performed, and the refrigerant circuit (50) A switching mechanism (54) for switching the circulation direction,
In the adsorption heat exchanger (51, 52), the adsorption operation and the regeneration operation of the adsorbent are alternately performed by switching the switching mechanism (54), and the adsorption heat exchanger (51, 52) during the regeneration operation is performed. 52) a humidity control device for supplying air flowing into the room or discharging it outside the room,
A hot water coil (67a, 67b) for heating air is provided, and the upstream air of the adsorption heat exchanger (51, 52) during the regeneration operation is supplied for a predetermined period immediately after switching from the adsorption operation to the regeneration operation. A hot water coil mechanism (66) for performing a heating operation for heating over a period of time and a pause operation for stopping air heating after the heating operation until switching from the regeneration operation to the adsorption operation. Humidity control device. In claim 1,
An outside air inlet (24) for taking in air flowing into the adsorption heat exchanger (51, 52) from the outside, and an outside air temperature detecting unit (99) for detecting the temperature of the outdoor air,
The hot water coil includes an outdoor air side hot water coil (67b) for heating air taken in from the outdoor through the outdoor air inlet (24),
When the air taken in from the outside air inlet (24) flows through the adsorption heat exchanger (51, 52) during the regeneration operation and is supplied to the room, the hot water coil mechanism (66) detects the outside air temperature. The humidity control apparatus, wherein the heating operation is prohibited when the detected temperature (to) of the section (99) is equal to or higher than a predetermined value (tos1). In claim 1 or 2,
An inside air inlet (23) for taking in air flowing into the adsorption heat exchanger (51, 52) from the room, and an inside air humidity detecting unit (96) for detecting the relative humidity of the room air,
The hot water coil includes an indoor air side hot water coil (67a) for heating air taken in from the room through the room air inlet (23),
When the air taken in from the inside air suction port (23) flows through the adsorption heat exchanger (51, 52) during the regeneration operation and is discharged outside the room, the hot water coil mechanism (66) detects the inside air humidity. When the detected humidity (hr) of the part (96) is a predetermined value (hrs) or less, the heating operation is prohibited. In any one of claims 1 to 3,
The hot water coil mechanism (66) supplies hot water to the hot water coils (67a, 67b) for heating the air upstream of the adsorption heat exchanger (51, 52) during the regeneration operation immediately before the start of the regeneration operation. A humidity control apparatus that performs a preheating operation. In any one of claims 1 to 4,
A hot water generator (61a) for generating hot water by sunlight, and a hot water supply channel (61b) for supplying the hot water generated by the hot water generator (61a) to the hot water coils (67a, 67b), A humidity control apparatus comprising a hot water supply mechanism (61).

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